Lock and release mechanism for fire extinguisher

FIELD: mechanics.

SUBSTANCE: lock and release mechanism for extinguisher includes head attached to a container. The head is provided with inlet and outlet channels for fire extinguishing agent supply. Bushing with flange from one side and circular bead from the other side is threaded into the housing. Rod is spring-loaded with regard to head and installed into bushing hole to enable interaction of locking element with circular bead acting as valve seat. Pivoted steering lever and handle for transportation with fastening base are located inside head at an angle to head axis. To fix handle under bushing flange, handle base is provided with tie-down slot covering bushing under flange and pressing handle base to head. Pivoted lever with threaded hole is attached to rod via pusher being in the shape of screw with retainer nut. Head material is profiled iron of aluminium alloy. It is processed by pressing and drawing method. Bushing material is brass.

EFFECT: improvement of operational reliability and reduction of mechanism repair cost and price.

4 cl, 4 dwg

 

The invention relates to fire equipment and can find application in the design and manufacture of the trigger-locking devices used in fire extinguishers.

Known trigger - locking device for fire extinguishers (see U.S. Pat. RU # 2176924, CL AS 13/76, publ. 2001) [1]. The unit includes a cylinder connected with the cylinder of fire extinguisher conical or cylindrical thread (respectively for gas or powder fire extinguishers). The head is made respectively with the inlet and outlet channels located therein coaxial input channel shut-off valve and with hole for relief valve or a pressure gauge. The check valve in the device is made with the rod, fastened with a locking element and a spring-loaded spring, which is located at the end of the rod opposite the locking element of the valve, the outer side of the head and is made with elements for securing it. The device includes a handle for transportation and the control lever, provided with means for attaching them, which is formed by a cylindrical protrusion made integral whole with the head and the circular groove in the ledge, and with the restrictive sections that allows you to limit the rotation of the arm and lever. The device used a spring shut-off valve of different types (conical, cylindrical, lamellar is).

However, this arrangement of the springs shut-off valve on the outside of the device reduces the reliability and leads to additional time and cost for cleaning and preparation of fire extinguisher to use. In addition, this leads to change the default size and shape of the device and requires the manufacture of fire extinguishers special equipment for transportation and storage. Additionally, the means for fastening the arm is formed with a cylindrical protrusion with a groove, which is made on the head and at the same time a whole with it is that it is difficult to manufacture, is not practically feasible and leads to a decrease in reliability of the device. This leads to increased cost of the device and increased maintenance costs.

Known trigger-locking device for fire extinguishers containing a cylinder of brass, which is fastened to the housing of the cylinder is tapered threads and executed with input and output channels of the extinguishing means, with shut-off and safety valves, with lever control shut-off valve, which is made with the control emphasis, and with a handle for transportation, provided with means for attachment to the head. In the device shut-off valve is installed in the cylinder, coaxially to the input channel of the extinguishing means and contains a rod made integral whole with padprints the m locking element, and the saddle, which interacts with the locking element in opening and closing the valve while the unit is equipped with safety valve, which is located in the bore of the head at an angle to its axis (see catalogue of company "NINGBO KAIXUAN FIRE CONTROL EQUIPMENT CO., LTD, 2005, ed. p.1-5) [2].

However, the installation of a shutoff valve in the slot directly in the head, difficult access to valve repair or valve replacement, because it leads to the necessity of unscrewing tapered threads connecting the cylinder with the cylinder, which, eventually, could damage the threads and damage the expensive heads, which are made of brass. This leads to the need to find ways of saving. In addition, the annular collar seat gate valve is located inside the head, which is technically very difficult to perform and is associated with higher labor costs. These circumstances lead to increased cost of the device and its operation.

Moreover, in the device the plunger rod has the form of a ledge made by stamping from the body of the lever, and when the wear of the follower you want to replace the entire arm. This is expensive. When this device is limited because it does not stipulate the stroke adjustment rod.

Known trigger-locking device for fire extinguishers containing the head, skre the certain cylinder threaded performed with input and output channels of the extinguishing means, shutoff valve that is located coaxially to the input channel of the extinguishing means in the form of rod, fastened with a spring-loaded locking element. and saddle, which interacts with the locking element of the rod, the hole safety valve and manometer located at an angle to the axis of the head, the handle for transporting and turning the control lever shaft that are made in the form of reasons with curved sides and connected to the axle and the handle is provided with a mounting groove in the base, symmetrically installed between the flanges of the lever with mutually opposite position of the bases and sides and sealed with the cylinder, means for fastening (see U.S. Pat. US No. 4019584, CL AS 13/00, publ. 26.04.1977,) [3].

In this device, as previous counterparts, the check valve is located directly in the head, which reduces access to the valve when it is repair or replacement, increases operating costs for the device, reduces reliability and increases the cost of the device and its manufacture.

As the closest analogue accepted trigger-locking device for fire extinguishers containing the cylinder and connected with the cylinder by a threaded connection and is made with input and output channels of the extinguishing means, a threaded sleeve mounted in the cylinder and coaxial input Cana is at and flange from one end and with an annular collar - with the other rod, a spring-loaded relative to the head and coaxially mounted in the bore of the sleeve with the possibility of interaction between the locking element of the rod with the annular collar of the sleeve, acting as a valve seat, a swing control lever, handle for transport, made with a base for mounting, and located in the head at an angle to the axis of the relief valve and manometer (GB 727193, CL AS 13/00, publ. 30.03.1955).

The invention provides more reliable operation.

To ensure this technical result in the trigger-locking device for fire extinguishers containing the cylinder and connected with the cylinder by a threaded connection and is made with input and output channels of the extinguishing means, a threaded sleeve mounted in the cylinder and coaxial input channel and flange from one end and with an annular collar with the other, a rod, a spring-loaded relative to the head and coaxially mounted in the bore of the sleeve with the possibility of interaction between the locking element of the rod with the annular collar of the sleeve, acting as a valve seat, a swing control lever, handle for transport, made with a base for mounting, and located at an angle to the axis of the head relief valve and pressure gauge according to the invention, the means for mounting the tion of the handle formed by the flange of the sleeve, and the handle base is made with the mounting groove of the covering sleeve under the flange, clamping the base of the handle to the head, thus turning the lever is made with a threaded hole and is connected with the rod through the plunger, which is made in the form of a screw, screwed into the threaded hole of the lever and is secured therein by a lock nut, and the material for the head is shaped Bicycle aluminum alloy, which is processed first by pressing and then by the method of drawing.

In addition:

the sleeve is made of brass;

- fixing the stop arm interacting with the wall of the head housing, formed by a ledge made by stamping from the base of the handle;

the flange is made round and has a mounting hole key, which is located perpendicular to its axis.

These features, along with improved operational reliability, provide easier access to shut-off valve repair and replacement, reduced maintenance labor costs during Assembly and disassembly of the device, as well as the use for the manufacture of head cheap and durable materials to reduce the cost of the device.

Figure 1 shows a section of the General form trigger-locking device.

Figure 2 presents a section of the sleeve along a-A.

Figure 3 presents the cross-section of the sleeve along B-B.

Figure 4 shows in the d In the crown.

Trigger-locking device comprises a cylinder 1, which is fastened to the cylinder (not shown) by thread 2. The device is equipped with a threaded sleeve 3, which is made with restrictive flange 4 and the annular groove 5. In the sleeve 3 is made perpendicular to the axis through the window 6, which communicates with the groove 5. The sleeve 3 has on the outer surface of the thread 7 and the cylinder 1 has opposite threaded hole 8 under the sleeve 3. The structure of the device includes a handle 9 for transporting and rotating the lever 10 control shut-off valve 11. The lever 10 and arm 9 contain, respectively, the bases 12, 13, which are made with the corresponding bent flanges 14, 15 and fixed on the axis 16 with the location of the arm 9 between the flanges 14 of the lever 10 and with mutually opposite position of the bases and sides of the lever and arm. At the base 13 of the arm 9 is made mounting groove 17. The role of the means for fastening the arm 9 performs a bounding flange 4 of the sleeve 3. Fixing the stop 18 mounted on the base of the handle for engagement with the casing head and the exclusion of turns of the handle 9 relative to the wall of the head housing. The stop 18 may be formed by a protrusion made by stamping from the base 13 of the handle 9.

The bushing is screwed into the threaded hole 8 of the head 1 and is located in the cylinder so that the Central re is rtie 19 of the sleeve 3 is located coaxially with the input channel 20 of the extinguishing means, and 6 sleeve communicated through the annular groove 5 with the output channel 21 for supplying fire extinguishing means, which is made stepwise. Between the flange and the head is missing the handle base, covering sleeve mounting groove 17.

The stem 22 of the valve 11 coaxially located in the Central bore 19 of the sleeve 3. The end of the sleeve 3 from the side opposite to the flange 4, is made with an annular collar 23, which serves as a saddle locking element 24 of the stem 22 of the valve 11.

The rod 22 with the locking element 24 valve 11 is spring-loaded by a spring 25 located on the side of the locking element 24 and interacting with him.

In the lever 10 control built plunger 26 that is designed to interact with the rod 22. The plunger has the form of a screw, screwed into the threaded hole of the base 12 and secured therein by a lock nut 27.

The flange 4 of the sleeve may be made round. He performed with the alignment holes 41turnkey. The flange may have a hexagonal shape.

The drawing shows a device for use with a gas under high pressure. This device contains a pressure relief valve 28, which is installed in the hole 281located at an angle to the axis of the head 1, and is made with a bursting disc 29. In the case of use as extinguishing media powder in the hole 281can be set the priority of the gauge. When transporting the lever 10 is fastened with the handle 9 of the stopper 30, passed through aligned along the axis of the holes drilled in the lever 10 and the handle 9.

The device operates as follows.

To bring the head into effect the turning lever 10 control release the fixation of the stopper 30, the crimping lever 10 with a handle 9 for shipping. After that, the pivoting arm 10 of the control plunger 26 impinges on the rod 22 shut-off valve 11 in the direction of opening of the valve 11. The rod 22 to its locking element 24 overcomes the spring 25 (presses the locking element 24 of the valve stem to the annular shoulder 23 of the valve seat and opens the access extinguishing media which from the input channel 20 passes through the gap formed (open valve) between the seat 23 and the locking element 24 of the rod 22, and extinguisher comes through the window 6 of the sleeve in the groove 5 of the sleeve, and further to the output channel 21 for supplying fire extinguishing means and to the fire.

The total area of cross sections through the Windows 6 of the sleeve is chosen equal to the sectional area of the stage output channel 21 provided with an annular groove 5 of the nut. This allows you to create the same flow resistance at the outlet valve 11 and the outlet 21 of the head and eliminate the output device pressure losses and flow of the fire extinguishing media is TBA.

When releasing the lever 10 controls the locking element 24 of the stem 22 of the valve 11 under the action of the spring 25 is returned in the direction of closing the valve sits on the annular shoulder 23 of the valve seat and closes the access extinguishing media from the input 20 to the output channel 21.

Filling device extinguishing means is identical with the condition that the extinguisher is supplied under pressure in the reverse direction from the output 21 of the channel through the bushing section of the sleeve 3 and the valve 11 to an input channel 20 and into the container.

In the device shut-off valve 11 is installed in the threaded sleeve 3, which is screwed into the return hole 8 of the head 1. This facilitates access to the shut-off valve 11 at its repair or replacement. This significantly reduced labor costs for Assembly and disassembly of the device, reduces the cost of repair and maintenance. Repair and operation costs cost proposed device is 2.5-3 times cheaper than in the known analogues.

Threaded sleeve 3 is designed to perform multiple functions and is made with an annular collar 23 at one end and its other end to restrictive flange 4. The annular collar 23 on the end of sleeve 3 serves as a valve seat. The collar 23 is available for processing the end face of the sleeve, which allows to simplify its manufacture. These are what listwa help to improve the manufacturability of the device and its reliability. Along with this simplifies the manufacture of the device is simplified Assembly and disassembly and reduces the cost of manufacture, operation and cost of the device. (Known analogues, the clamp valve seat is located inside the head, and its production is associated with higher labor costs).

By screwing the sleeve 3 in the cylinder 1, the base of the handle with the mounting groove pass between the head and the bounding flange, and the retaining groove 17, is made in the base of the handle, sleeve covers. While the means for attaching the base of the arm is formed by a bounding flange, sleeve and head. In this case, this tool is made detachable, which simplifies the manufacture and reduces the cost of the device.

For exceptions turns the handle is provided with a locking stop 18 that communicates with a rectangular casing head 1. The stop 18 may be in the form of a protrusion, which is formed from the base 13 of the handle 9 by stamping. This increases reliability and allows to reduce the cost and fabrication of the device.

In the device provided by the stroke adjustment rod that runs the plunger 26 that communicates with the stem 22 of the shut-off valve 11. When the setting of the stroke, you must loosen the lock nut 27 and rotate the plunger 26, which is made in the form of a screw, the specified value is their turn. This allows you to use different types of extinguishing media than expanding the operational capabilities of the device without substantially increasing its value.

As the material for the head prompted to select shapes from aluminum alloy, which is processed first by pressing and then by the method of drawing. This provides a substantial reduction in the cost of the fire extinguisher (1.5 times), while maintaining good mechanical properties and strength required. Execution sleeve brass increases the reliability of the device and increases the period of his service.

The flange 4 of the sleeve 3 may be made of a round shape with the installation hole 41under the key, which is located perpendicular to the axis of the sleeve, or may be made hexagonal. This allows the use of a mounting key than simplifies the Assembly and disassembly of the device.

Technical and economic effect of the proposed solutions is to improve the operational reliability while facilitating access to shut-off valve in the repair and dismantling of the head, and also in reducing the operational cost of repairs in 2,5-3 times, as well as in reducing the cost of manufacture of the device while reducing the cost of the device in 1.5.

1. Trigger-locking device for fire extinguishers containing Golo is ku, sealed cylinder threaded performed with input and output channels of the extinguishing means, a threaded sleeve mounted in the cylinder and coaxially with the input channel and flange from one end and with an annular collar with the other, a rod, a spring-loaded relative to the head and coaxially mounted in the bore of the sleeve with the possibility of interaction between the locking element of the rod with the annular collar of the sleeve, acting as a valve seat, a swing control lever, handle for transport, made with a base for mounting and angled to the axis of the head relief valve and pressure gauge, characterized in that the means for fastening of the handle formed by the bushing flange and the base of the handle is made with the mounting groove of the covering sleeve under the flange, clamping the base of the handle to the head, thus turning the lever is made with a threaded hole and is connected with the rod through the plunger, which is made in the form of a screw, screwed into the threaded hole of the lever and is secured therein by a lock nut, and the material for the head is shaped Bicycle aluminum alloy, which is processed first by pressing and then by the method of drawing.

2. Trigger-locking device according to claim 1, characterized in that the sleeve is made of brass.

3. Trigger-locking the device according to claim 1, characterized in that the locking stop arm interacting with the wall of the head housing, formed by a ledge made by stamping from the base of the handle.

4. Trigger-locking device according to claim 1, characterized in that the flange is made round and has a mounting hole key, which is located perpendicular to its axis.



 

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Gas generator // 2286844

FIELD: mixing.

SUBSTANCE: gas generator comprises housing provided with means for gas discharging made of openings on the side of the housing and gas generating and igniting charges mounted inside the housing and made of pyrotechnical compositions. The initiating member is mounted on one of the faces, and filter is mounted on the side and faces of the gas-generating charge. The surface of the gas-generating charge is armored from the side of the gas outlet. The auxiliary charge is mounted axially symmetrical in the gas-generating charge and is provided with layers that pass from the axially symmetrical layer to the periphery and connected with them.

EFFECT: enhanced reliability and expanded functional capability.

4 cl, 1 dwg

FIELD: chemical industry; the portable devices for the fire extinguishing.

SUBSTANCE: the invention is pertaining to the field of the fire-fighting equipment, in particular, to the portable fire extinguishers (manual, pistol, pack) and may be used for fire extinction by feeding of the fire-extinguishing agent (fluid, powder) to the center of inflammation. The stated technical solution allows to improve the operational capabilities and its usage convenience due to expansion of the range of the used fire-extinguishing matters, minimization of time used for replacement of the pressure forming means, provision of the possibility to correct the volume of the gas-generating composition according to the existing need at the simultaneous increase of effectiveness of operation due to the maximum utilization of the internal volume of the container and elimination of the unproductive feeding of the gas. The represented portable fire extinguisher has the container for the fire-extinguishing matter and the gas-generating tool for creation of the operational pressure. The portable fire-extinguisher singularity consists, that it is supplied with the a control unit, the pressure sensor located in the container, at that the gas-generating tool is made in the form of at least two gas generators arranged in the airproof cassette mounted outside the container and linked with it by means of the high-speed coupling, and the control unit interacts with each gas generator with provision of their consecutive actuation.

EFFECT: the invention ensures the increased effectiveness of operation, the improved operational capabilities, convenience of usage, expansion of the used fire-extinguishing matters, minimization of the time for replacement of the pressure forming means, the possibility to correct the volume of the gas-generating composition.

3 cl, 1 dwg

FIELD: spraying devices adapted for degassing, deactivation and disinfection of military and civil machinery, for animal and plant treatment and fire-extinguishant spraying during fire suppression.

SUBSTANCE: spraying device comprises body, neck, high-pressure cylinder, locking-and-triggering head and filling-and-draining pipe. Air-tight casing is installed in through stepped orifice made in inner side of locking-and-triggering head. The casing is made as sleeve to receive high pressure cylinder arranged in chamber thereof. The high pressure cylinder has tearable diaphragm. Gas channel is defined between the sealed casing and high pressure cylinder. Gas channel throat is 0.1-0.12 of sleeve cross-sectional area. Sleeve mouth is provided with collar having outer thread. Check valve is installed in sleeve bottom. Sleeve bottom may adjust high pressure cylinder in axial direction. Punching mechanism is installed in through stepped orifice and is located from outer side of locking-and-triggering head. Maximal distance between outer surfaces of filling-and-draining pipe and casing is not more than 0.9 of inner neck diameter.

EFFECT: increased operational reliability, enlarged storage period, possibility of device filling with aggressive, erosive compositions and solutions.

2 cl, 2 dwg

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