A pneumatic spray head for greasing the baking forms

 

(57) Abstract:

Usage: the invention solves the problem of improving the operational reliability of a pneumatic spraying device for automatic greasing baking forms for baking bread and a decrease in oil consumption in the coating of vegetable oil inside of the forms. The inventive pneumatic spray head provided with a reinforced membrane 6 from the oil cavity 10 finger 14 with axial and radial channels to supply oil to the holes 16 made in the stem 8. The end of the rod 8 is placed in the axial channel of the upper part of the finger 14. The lower part of the finger 14 is located in the cavity of the inner nozzle 9. Valve in the form of a spring-loaded to the hole of the rod 8 ball 17 is installed in the axial channel of the finger 14. 4 Il.

The invention relates to devices for spraying and applying liquids to the surface of the product and can be used in the baking industry for coating of vegetable oil on the inner surface of the baking forms for baking bread.

Known spray head for airless spraying, mainly oil for metered lubrication hlebopechka supply and discharge of compressed air, a spray nozzle and shut-node end-to-end channels, informing the nozzle with high-pressure pump [1]

A disadvantage of the known spray head is complexity in operation in the conditions of the current baking ovens due to the bulkiness of the design that contains a large number of high-precision parts and components, and the need to apply high pressure pump for pumping and spraying oil.

Closest to the technical essence and the achieved result is a pneumatic nozzle, comprising a housing with channels the flow of oil and air, are accommodated in the housing and separating the oil and air cavity, a flexible diaphragm mounted on it the spring-loaded axle with the valve internal oil nozzle and covering his air nozzle [2]

However, this known pneumatic nozzle is characterized by the absence of a precisely dosed supply of spray liquid and the necessity of using high-pressure pump for pumping and spraying the liquid, which excludes the possibility of applying this known nozzle for grease baking forms due to high oil consumption and complexity of the operation.

The purpose of izobreteny the same time, in a pneumatic spray head for greasing the baking forms, comprising a housing with channels the flow of oil and air, are accommodated in the housing and separating the oil and air cavity, a flexible diaphragm connected with the latter by a spring-loaded rod, valve, located on the axis of the inner housing of the oil nozzle and covering his air nozzle according to the invention, it has strengthened the membrane from the side of the oil cavity finger with axial and radial channels to supply oil to the holes formed in the rod, the end of which is placed in the axial channel of the upper part of the finger, thus the bottom part of the finger is located in the cavity of the inner nozzle, and a valve in the form of a spring-loaded to the hole of the stem of the bulb is installed in the axial channel of a finger.

Authors unknown solutions having characteristics similar to the characteristics that distinguished the claimed technical solution to the prototype.

In Fig.1 shows a General view of a pneumatic spray head for greasing the baking forms, Fig.2 shows a view of "A" in Fig.1, in Fig.3 shows a section B-B ' in Fig.1, in Fig.4 depicts a cut-In" in Fig.2.

A pneumatic spray is, the top part 4 of the housing with channels 5 air supply, a flexible membrane 6 spring 7 and the rod 8, an internal oil nozzle 9 with the cavity 10 and the holes 11 and covering his air nozzle 12 with holes 13.

The membrane 6 divides the housing 1 oil and air cavity, and the oil cavity below the membrane 6, and the air cavity is located between the upper part 4 of the housing and the membrane 6.

In the membrane 6 reinforced finger 14 with an axial channel 15, in the upper part of which is placed the end of the rod 8 with holes 16 for the supply of oil, the ball 17 and the spring 18 which presses the ball 17 to the bore of the stem 8. Spring to the hole 16 of the rod 8 ball 17 acts as a valve to allow oil in only one direction; from channel 2 and podobrannoj oil cavity in the axial channel 15 and then into the cavity 10 of the nozzle 9.

The lower part 19 of the finger 14 is located in cavity 10 of the nozzle 9 with the possibility of longitudinal movement of the deflection of the membrane 6. The upper part of the finger 14 is made with a radial holes 20 for supplying oil to the holes 16 of the rod 8. The air nozzle 12 is made with an annular groove 21 and connected with it by the channels 22 for the passage of air in megaplume space 23.

The membrane 6, W is in the rod 8 is screwed into the screw 25. The body 1 is provided with a socket 26 for the flow of oil into the channels 2 and the pipe 27 for supplying air into the channels 3. To remove air bubbles in the oil from under the membrane 6 in the housing 1 is screwed into the tube 28.

A pneumatic spray head for greasing the baking form is as follows.

First make the filling oil cavity 10 in the pipe 26 serves oil, pre-slightly unscrewing the tube 28 and giving a pneumatic spray head position at which the stopper 28 occupies the highest position. After filling the oil cavity 10 and removed from the oil system of air bubbles through the tube 28, the last screw up, sealing oil system. Holes 11 oil nozzles 9 have a size of 0.3.0.4 mm, which ensures the impossibility of spontaneous outflow of oil from the cavity 10.

For greasing the baking forms a pneumatic spray head mounted in a vertical position above the middle of the form and include the submission of a compressor of the air in the pipe 27. The air on channel 3 enters an annular groove 21, where through the channels 22 enters megaplume space 23 and through the openings 13 expires in the atmosphere. Odnovremenno air, the value of which is maintained within the range of from 0.25 to 0.35 MPa, the membrane 6 is bending in the direction of the housing 1 in its oil cavity. When the finger 14, Digas in the nozzle 9, squeezes the oil from the cavity 10 through the openings 11. Because the diameter of the mating surfaces of the nozzle 9 and the finger 14 3.5.4.5 times smaller than the diameter of the upper part of the stem 8, the oil cavity 10 develops pressure, providing the exhaust oil from the holes 11 with a speed 100.130 m/s and the oil spray jet. Vykladyvayuschiesya out of the holes 11 a trickle of oil pass through the apertures 13 and, mingling with the air jets coming out of the holes 13, sprayed in the atmosphere inside lubricated form. When this drops sprayed oil getting on the walls of the form, grease form. During the deflection of the membrane 6 and the movement of the rod 8 and the finger 14 of the oil contained in the oil cavity of the housing 1, is pushed by reducing the volume podobrannogo space through pipe 26 back to the tank.

For lubrication of the following form feed pipe 27 of the compressor air is shut off pneumatic-hydraulic head is moved and set on the middle of the form. When disconnecting the air compressor membrane 6 under the action of the spring 7 returns to ichogo the oil pressure in the cavity 10 is smaller than the oil pressure in the oil cavity of the housing 1. As a result of pressure difference, the ball 17 is pressed against the rod 8 and the oil from the oil cavity of the housing 1 is sucked into the cavity 10, and the oil from the oil tank through the pipe 26 flows respectively in the oil cavity of the housing 1. The location of the tank in relation to the level of the membrane 6 is supported at a level that provides a tight pressing of the ball 17 to the rod 8 and the sealing of the cavity 10 from the spontaneous outflow of oil through the holes 11. The increase or decrease of the amount of oil to "grease" shapes produce a decrease or increase the stroke of the finger 14 by unscrewing or screwing of the screw 25 in the piston rod 8.

Including the flow of compressor air pipe 27, to produce a grease of the following form as described above.

A pneumatic spray head for greasing the baking forms, comprising a housing with channels the flow of oil and air, are accommodated in the housing and separating the oil and air cavity, a flexible diaphragm connected with the latter by a spring-loaded rod, valve, located on the axis of the inner housing of the oil nozzle and covering his air nozzle, characterized in that it has strengthened in the membrane from the side of the oil cavity with your finger the axial channel of the upper part of the finger, thus the bottom part of the finger is located in the cavity of the inner nozzle, and a valve in the form of a spring-loaded to the hole of the bead is installed in the axial channel of the finger.

 

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