Device for assisting closing of release valve of centrifugal air compressor

Abstract

The utility model provides a device for assisting in closing a release valve of a centrifugal air compressor, which solves the problems that when the existing centrifugal air compressor is just started, a cold air system is in a non-pressure state, and after equipment is started, the cold air system is free of pressure, a pneumatic valve is not driven by an air source, and an unloading valve is in an open state and cannot be closed. The technical problems that in the prior art, compressed air can be directly discharged through an unloading valve, electric energy is wasted, and production time is delayed are solved, and the centrifugal air compressor auxiliary device can be widely applied to the field of centrifugal air compressor auxiliary devices. The device specifically comprises a centrifugal air compressor, a stop valve is arranged between a centrifugal air compression unloading valve pipeline and a silencer pipeline, mounting flanges are fixedly connected to the two ends of the stop valve, mounting holes are formed in the mounting flanges, a valve element is rotationally connected in the stop valve, and a rotating rod is fixedly connected to the valve element. The rotating rod is fixedly connected with the output end of a pneumatic actuator, and the pneumatic actuator is connected with an external air source.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for centrifugal air compressors, in particular to a device for assisting the closing of a discharge valve of a centrifugal air compressor. Background Art

[0002] The unloading valve of the centrifugal air compressor used is controlled by a pneumatic valve and connected to the cold air system as the air source. It is initially in a fully open state. When production is just started, the cold air system is in a pressure-free state. After the equipment is started, air is sucked in by the inlet filter, passes through the primary and secondary filters and enters the compressor. After the first, second and third stages of compression, cooling, and air-water separation, it enters the air outlet pipe. However, since the cold air system has no pressure and the pneumatic valve has no air source to drive it, the unloading valve is in an open state and cannot be closed. The compressed air will be directly discharged from the unloading valve, which not only wastes electricity, but also delays the production time. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the above-mentioned technology and provides a device for assisting the closing of a discharge valve of a centrifugal air compressor.

[0004] To this end, the utility model provides a device for assisting the closing of a discharge valve of a centrifugal air compressor, comprising a centrifugal air compressor, a stop valve being arranged between the unloading valve pipeline of the centrifugal air compressor and the muffler pipeline, mounting flanges being fixedly connected at both ends of the stop valve, mounting holes being provided on the mounting flanges, a valve core being rotatably connected in the stop valve, a rotating rod being fixedly connected to the valve core, the rotating rod being fixedly connected to the output end of a pneumatic actuator, and the pneumatic actuator being connected to an external air source.

[0005] Furthermore, cavities are provided on both sides of the inner wall of the stop valve, and a plurality of springs are fixedly arranged on the sides of the inner cavities of the two cavities away from each other, a sliding block is fixedly arranged between the ends of the springs on the same side close to the valve core, and an electromagnetic adsorption block is fixedly arranged on the end of the sliding block close to the valve core, and slots are provided on both sides of the valve core, the electromagnetic adsorption blocks are adapted to the slots, and rust-proof iron blocks are fixedly arranged inside the two slots, and the sliding blocks are slidably connected to the inside of the cavity.

[0006] Furthermore, a sealing ring is provided on the outer wall of the valve core, an anti-corrosion layer is coated on the surface of the valve core, the shape of the valve core is cylindrical, and the rotating rod is connected to the center line of the valve core.

[0007] Furthermore, a filter is fixedly connected inside the stop valve to filter impurities in the cold air.

[0008] The utility model provides a device for assisting the closing of a discharge valve of a centrifugal air compressor, which has the following beneficial effects:

[0009] Easy to operate. When the cold air system pressure rises and reaches the pneumatic valve driving pressure, the unloading valve will automatically close. At this time, the stop valve can be opened manually and is in the normally open state.

[0010] Through the mutual cooperation among the spring, the electromagnetic adsorption block, the card slot and the anti-rust iron block, power is applied to the electromagnetic adsorption block to make the electromagnetic adsorption block and the anti-rust iron block magnetically adsorbed. At this time, the electromagnetic adsorption block is located in the card slot, which further limits the position of the valve core and improves the ability of the valve core to cut off high-pressure air. It is more practical and prevents the valve core from being flushed open by high-pressure air. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a structural diagram of the interior of the utility model;

[0013] Figure 3 This is the internal structure diagram of the valve core of the utility model;

[0014] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0015] Markings in the figure: 1. Unloading valve pipeline; 2. Muffler pipeline; 3. Stop valve; 4. Pneumatic actuator; 5. Sealing ring; 6. Filter; 7. Mounting hole; 8. Valve core; 9. Rotating rod; 10. Anti-rust iron block; 11. Mounting flange; 12. Anti-corrosion layer; 13. Cavity; 14. Spring; 15. Sliding block; 16. Electromagnetic adsorption block; 17. Slot. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0017] like Figure 1 As shown, the utility model provides a device for assisting the closing of the discharge valve of a centrifugal air compressor, comprising a centrifugal air compressor, wherein a stop valve 3 is arranged between the unloading valve pipeline 1 and the muffler pipeline 2 of the centrifugal air compressor. The passage for the cold air to be discharged from the unloading valve pipeline 1 is closed, so that the cold air system is quickly pressurized. When the pneumatic valve driving pressure is reached, the unloading valve will automatically close, and at this time, the stop valve 3 can be opened manually and is in a normally open state.

[0018] The two ends of the stop valve 3 are fixedly connected with mounting flanges 11, and mounting holes 7 are provided on the mounting flanges 11. The valve core 8 is rotatably connected in the stop valve 3, and a rotating rod 9 is fixedly connected to the valve core 8. The rotating rod 9 is fixedly connected to the output end of the pneumatic actuator 4, and the pneumatic actuator 4 is connected to an external air source. When in use, the unloading valve pipeline 1 and the muffler pipeline 2 are connected through the mounting holes 7 on the mounting flange 11, and then the pneumatic actuator 4 drives the rotating rod 9 to rotate, thereby driving the valve core 8 to rotate through the rotating rod 9 to open the stop valve 3 to allow cold air to pass through.

[0019] like Figure 3 As shown in FIG. 4 , cavities 13 are provided on both sides of the inner wall of the stop valve 3, and a plurality of springs 14 are fixedly provided on the sides of the inner cavities of the two cavities 13 that are away from each other, and a sliding block 15 is fixedly provided between the ends of the springs 14 on the same side close to the valve core 8, and an electromagnetic adsorption block 16 is fixedly provided on the end of the sliding block 15 close to the valve core 8, and a card groove 17 is provided on both sides of the valve core 8, and the electromagnetic adsorption block 16 is adapted to the card groove 17, and rust-proof iron blocks 10 are fixedly provided inside the two card grooves 17, and the sliding block 15 is slidably connected inside the cavity 13.

[0020] When in use, power is supplied to the electromagnetic adsorption block 16, and a magnetic field is generated around the electromagnetic adsorption block 16, so that the electromagnetic adsorption block 16 and the anti-rust iron block 10 are magnetically adsorbed. At this time, the electromagnetic adsorption block 16 enters the slot 17, and at the same time, the two electromagnetic adsorption blocks 16 on the left and right play a role in limiting the valve core 8 to prevent the valve core 8 from being opened by cold air. When it is necessary to open the valve core 8 to allow cold air to pass through, it is only necessary to first cut off the power in the electromagnetic adsorption block 16. Under the elastic action of the spring 14, the sliding block 15 and the electromagnetic adsorption block 16 move into the cavity 13, disengage from the slot 17, release the limit on the valve core 8, and the pneumatic actuator 4 drives the rotation of the rotating rod 9, thereby driving the rotation of the valve core 8 through the rotating rod 9 to open the stop valve 3 to allow cold air to pass through.

[0021] The outer wall of the valve core 8 is provided with a sealing ring 5, and the surface of the valve core 8 is coated with an anti-corrosion layer 12. The valve core 8 is cylindrical in shape, and the rotating rod 9 is connected to the center line of the valve core 8. The anti-corrosion layer 12 protects the valve core 8 from oxidation and corrosion. Figure 2 As shown, a filter screen 6 is fixedly connected inside the stop valve 3, and impurities in the cold air can be filtered through the filter screen 6, so that the cold air passing through the stop valve 3 is purer.

[0022] When in use, the pneumatic actuator 4 is first used to drive the rotating rod 9 to rotate and open the valve core 8, and the cold air will flow from the unloading valve pipeline 1 to the muffler pipeline 2. When the cold air is at the output end of the stop valve 3, it will be filtered by the filter 6, so that impurities in the cold air are blocked by the filter 6.

[0023] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A device for assisting the closing of a discharge valve of a centrifugal air compressor, comprising a centrifugal air compressor, characterized in that: A stop valve is arranged between the unloading valve pipeline of the centrifugal air compression and the muffler pipeline. The two ends of the stop valve are fixedly connected with mounting flanges. The mounting flanges are provided with mounting holes. The valve core is rotatably connected in the stop valve. A rotating rod is fixedly connected to the valve core. The rotating rod is fixedly connected to the output end of the pneumatic actuator. The pneumatic actuator is connected to an external air source.

2. A device for assisting the closing of a centrifugal air compressor discharge valve according to claim 1, characterized in that: Cavities are provided on both sides of the inner wall of the stop valve, and a number of springs are fixedly arranged on the sides of the inner cavities of the two cavities that are away from each other. A sliding block is fixedly arranged between the ends of the springs on the same side close to the valve core, and an electromagnetic adsorption block is fixedly arranged on the end of the sliding block close to the valve core. Card grooves are provided on both sides of the valve core, and the electromagnetic adsorption blocks are adapted to the card grooves. Rust-proof iron blocks are fixedly arranged inside the two card grooves, and the sliding blocks are slidably connected to the inside of the cavity.

3. A device for assisting the closing of a centrifugal air compressor discharge valve according to claim 2, characterized in that: A sealing ring is arranged on the outer wall of the valve core, an anti-corrosion layer is coated on the surface of the valve core, the valve core is cylindrical in shape, and a rotating rod is connected to the center line of the valve core.

4. A device for assisting the closing of a centrifugal air compressor discharge valve according to any one of claims 1 to 3, characterized in that: A filter is fixedly connected inside the stop valve to filter impurities in the cold air.

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