Device for pneumatic transportation of loose material

FIELD: metallurgy, chemical construction and other industries.

SUBSTANCE: invention relates to pneumatic transport and it can be used in handling of hot and cold loose materials. Proposed device for pneumatic transportation of loose materials contains air line with holes consisting of separate links laid inside transport pipeline. Pressure and thrust members for air line are hermetically mounted in holes in bottom of transport pipeline and are arranged in its inner space. End of air line provided with shutter. Initial section of each link is made in form of outer conical surface, and end is furnished with bell-type branch pipe with inner conical surface. Conical surfaces widen in direction of air flow. Longitudinal slots forming holes for air line are made on conical surface of each link.

EFFECT: reduced abrasive wear and power consumption at transportation of loose material, improved reliability of device, enlarged sphere of application.

4 cl, 7 dwg

 

The invention relates to the field of pneumatic and can be used in metallurgical, chemical, construction and other industries associated with the processing of hot and cold bulk materials.

A device for pneumatic transport of bulk materials containing transport pipeline, equipped with a padded inside the duct having openings through which the transport pipeline serves compressed air (SU 288651, 03.12.1970).

However, the practical use of the device showed that small deviations from the horizon, the temperature effects on the transport pipeline and the air duct from the moving hot material, the latter occupies any position, but not oriented relative to the bottom of the transport pipeline. Factor disorientatingly particularly affects turning parts, resulting in a cross-section of the transport pipe is blocked twisting duct. The supplied compressed air through the holes of the duct directed toward the bottom of the transport pipeline, rapidly wear out the bottom up through holes, which limits the scope of use of the device. In this case decreases the reliability of the pneumatic system. Abrasive wear of transport is Truboprovod and duct and increase the resistance to movement Materialovedenie mixture strongly affect the material and energy consumption of the pneumatic device.

It is also known device for pneumatic transport of bulk materials containing duct with holes, consisting of individual units laid inside a transport pipeline, equipped with clamping elements for air ducts, hermetically mounted in the holes in the bottom of the transport pipe and placed in the internal cavity, the axial elements, is arranged to move vertically, and a latch on the end of the duct (SU 1458302, 15.02.1989).

In this known device, the problem of active abrasive wear on the bottom of the transport pipeline is also not solved. The pipeline in the form of a flexible spiral hoses with screw slot is equipped with a drive for compression and extension of the pipeline in the axial direction is considerably complicates the design of the device and reduces its reliability.

The objective of the invention is to reduce abrasive wear and energy consumption for transportation of bulk material, increasing the reliability of the device and the expansion of its use.

This object is achieved in that the device for pneumatic transport of bulk materials containing duct with holes, consisting of individual units laid inside a transport pipeline, equipped with clamping elements for air, g is rmation mounted in the holes in the bottom of the transport pipe and placed in the internal cavity, resistant elements, is arranged to move vertically, and a latch on the end of the duct, the initial segment of each link is made in the form of an outer conical surface, and the opposite end provided with a socket and spigot type with an internal conical surface. Tapered surface extending in the direction of air movement. On the conical surface of each link is made of longitudinal grooves. The links between them are collected with the formation of these grooves holes duct. To prevent spontaneous connector separate parts of the duct, the angle of the outer cone surface and the inner surface of the socket tube is less than the angle of friction. The end of the last section of duct with holes after the valve in the direction of movement of the material is again introduced into the transport pipeline. Resistant elements are located in the inner cavity of transportation pipeline and hermetically mounted in the same holes that pressure.

In Fig. 1 shows a cross-section of the device using the hook clamping device; Fig. 2 - the same with the use of the stop of Fig. 3 - same with clamping devices in the form of a collar of flexible material; Fig. 4 - the same with the use of the stop of Fig. 5 is a section of the transport pipe in IU is the output of the air duct; in Fig. 6 - node 1 in Fig. 5; Fig. 7 - cross section a-a in Fig. 6.

Device for pneumatic transport of bulk materials contains the transport pipe 1, equipped with a padded inside the duct 2 with holes 3 through which the transport pipe 1 is compressed air. To provide orientation or fit of the duct 2 to the bottom of the transport pipe 1, the latter is equipped with pressure and thrust elements 4 and 5, which are placed in the inner cavity 6. The clamping elements 4 can be made in the form of hooks rotatably around the axis of the hole transport pipeline (Fig. 1 and 2) or in the form of a clamp (Fig. 3 and 4) of flexible material and a length greater than the length of the circumference of the transport pipeline. The length of the bottom of the transport pipe with holes in which are mounted pressure and thrust elements 4 and 5 can move vertically and around the axis of its hole. Resistant elements 5 are placed in the inner cavity of transportation pipeline and hermetically mounted in the same holes that pressure. Seal 7 with fasteners 8 are designed to compress air duct 2 clamping elements 4 to the bottom of the transport pipe 1 or the thrust elements 5. The initial position of the clamping elements 4 when laying the duct 2 in the transport pipeline is the wires 1 shows the position 9 in Fig. 1 and 2. For ease of Assembly, the duct 2 is made of separate parts (Fig. 6). The end of the last section of the duct 2 is derived from the transport pipeline and after regulating valve 10 in the direction of movement of the material is again introduced into it (Fig. 5). The links of the duct 2 are assembled together. To prevent spontaneous connector separate parts of the duct 2, the angles of inclination of the conical surface 11 and the inner surface of the bell is made smaller than the angle of friction. On the conical surface (outer 11 and inner tube 12) at each end of the link is made of longitudinal grooves 13, which in the assembled condition of the individual links and form holes 3 of the duct directed along the longitudinal axis of the transport pipeline.

Before laying the pipe clamping elements 4 are passed through the holes of the transport pipe 1 to the upper position 9. After installation of the duct in the transport pipeline pressure elements 4 is lowered until it touches the pipe 2 or resistant to elements 5 and tighten through the seal 7 by fasteners 8. The clamping elements 4 (Fig. 3) made of flexible material with a length greater than the length of the circumference of the transport pipeline. The excess free ends of the clamping elements are removed. Hook retaining elements 4 can be and is used in the operation of the pneumatic device. Installation into the transport pipe 1 pipe 2 is made by building up its separate parts, the ends of which are performed with the angle of inclination of the conical surface 11 and the conical surface of the socket fitting 12 is less than the angle of friction.

Tight duct or directing it at a certain height to the transport pipeline, as well as the implementation of the holes at a slight angle to the longitudinal axis and along the bottom of the transport pipeline reduces abrasive wear and reduces the consumption of compressed air. Rinsing in emergency situations, such as during a power outage, the end of the duct is derived from the transport pipeline, and after regulating flap again put into it. The presence of pressure and thrust elements especially on curved sections of the transport pipeline extends the application of the device.

1. Device for pneumatic transport of bulk materials containing duct with holes, consisting of individual units laid inside a transport pipeline, equipped with clamping elements for air, hermetically mounted in the holes in the bottom of the transport pipe and placed in the internal cavity, the axial elements, is arranged to move vertically, and a latch on the end of Vozduha the water, characterized in that the initial segment of each link of the duct is made in the form of an outer conical surface, and the opposite end provided with a socket and spigot type with an internal conical surface, with a conical surface extending in the direction of movement of air, on the conical surface of each link is made of longitudinal grooves, and the links between them are collected with the formation of these grooves holes duct.

2. The device according to claim 1, characterized in that for the prevention of spontaneous connector separate parts of the duct, the angle of the outer cone surface and the inner surface of the socket tube is less than the friction angle.

3. The device according to claim 1, characterized in that the end of the last section of duct with holes after the valve in the direction of movement of the material is again introduced into the transport pipeline.

4. The device according to claim 1, characterized in that the thrust elements are located in the inner cavity of transportation pipeline and hermetically mounted in the same holes that pressure.



 

Same patents:

FIELD: non-ferrous metallurgy.

SUBSTANCE: invention relates to equipment for pneumatic transportation of loose materials in non-ferrous metallurgy, particularly, alumina and it can be used in other industries. According to proposed method pneumatic transportation of loose materials is provided in dense layer built by means of pneumochamber pumps. Method includes delivery of additional air into transported material through aerating pipe placed inside transportation pipeline. Additional aeration air is supplied on curvilinear sections of aerating pipe at turning of transportation pipeline in horizontal plane in seven cross sections of said pipe and in 2-5 points of said sections, at turning of transportation pipeline in vertical plane with output to its vertical in ten cross sections and in 2-4 points of said sections, and at turning of transportation pipeline in vertical plane with output to horizontal, in seven cross sections and 2-6 points of said sections. Holes to deliver additional air are made in left-hand or right-hand lower quarter of said pipe to the left or right, accordingly. At arrangement of curvilinear section of transportation pipeline in vertical plane with output to vertical and to horizontal, holes are made in aerating pipe with arrangement symmetrically relative to vertical axis of corresponding cross sections of said pipe.

EFFECT: reduced velocity of transportation of loose materials with reduction of grinding of transported material, reduced consumption of compressed air for transportation, improved efficiency of transportation process.

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FIELD: hydraulic transportation.

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EFFECT: decreased abrasive wear of pipeline.

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2 cl, 1 dwg

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3 cl, 1 tbl, 4 dwg

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3 cl, 4 dwg

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10 cl, 5 dwg

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3 dwg

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1 dwg

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FIELD: power engineering.

SUBSTANCE: proposed device contains service tank with two valves. Upper valve of service tank is normally open, and lower one is normally closed. Tubular shanks are connected coaxially and hermetically to lower surfaces of each valve. Each shank is installed for vertical shifting onto corresponding outlet end of pipe for impulse delivery of gas. Hydraulic restrictor is installed at outlet end of pipe for impulse delivery of gas.

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1 dwg

FIELD: pneumatic conveyance system used, in particular, for removal of ash from heat-electric generating stations.

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EFFECT: increased distance of conveying materials.

1 dwg

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