Rotary compressor valve

Abstract

The application discloses a rotary compressor air valve, which comprises a valve cover, a valve seat, a valve core and a locking device; the valve seat comprises a base and a core part, the base and the core part are respectively provided with a first air flow channel and a second air flow channel which are communicated with each other, and the second air flow channel extends to one side of the core part; the valve cover is arranged on the base, the core part and the valve core are located in the valve cover, and an exhaust hole is arranged at the top of the valve cover; the valve core is connected and installed on a screw rod of the locking device through a bearing, so that the valve core can rotate around the screw rod, the lower end of the screw rod is coaxially connected with a coil spring, the valve core is also connected with the screw rod through the coil spring, one side of the lower end surface of the valve core is abutted against one side of the core part under the action of the spring force of the coil spring, so as to seal the second air flow channel, and the valve core is arranged to rotate around the shaft when the air flow thrust is greater than the spring force of the coil spring.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of compressor air valves. More particularly, the present application relates to a rotary compressor air valve. BACKGROUND

[0002] Conventional compressor air valves are all axially opened, such as the mesh valve and ring valve commonly used in reciprocating compressors. The valve plate moves up and down along the guide ring during movement, and is only pressed by the spring. Only part of the valve plate is pressed by the spring, and when the airflow through the valve gap is uneven or the spring is deformed, the valve plate is prone to tilt and collide with the valve seat or the lift limiter. The valve plate of the mesh valve and the ring valve is designed as a thin sheet to reduce the impact load caused by the mass of the valve plate. When a collision occurs, the valve plate is prone to shaking, changing the trajectory of the valve core, and other phenomena such as side shaking, affecting the working performance of the air valve, and in severe cases, even causing the valve plate to break, thereby causing the air valve to fail. SUMMARY

[0003] The purpose of the present application is to provide a rotary compressor air valve that provides pre-compression force and counterforce through a coil spring and establishes different sizes of flow area by rotating different angles to adapt to different displacement requirements.

[0004] The technical scheme adopted by the present application to solve the technical problem is: a rotary compressor air valve, comprising: a valve cover, a valve seat, a valve core, and a locking device;

[0005] The valve seat comprises a base and a core part, and the base and the core part are respectively provided with a first airflow channel and a second airflow channel that are in communication with each other, and the second airflow channel extends to one side of the core part; the valve cover is fixedly arranged on the base, the core part and the valve core are located in the valve cover, and the top of the valve cover is provided with an exhaust hole; the valve core is connected and installed on the screw rod of the locking device through a bearing, so that the valve core can rotate around the screw rod, the lower end of the screw rod is coaxially connected with a coil spring, the valve core is also connected with the screw rod through the coil spring, one side of the lower end surface of the valve core is in contact with one side of the core part under the action of the spring force of the coil spring to seal the second airflow channel, and the valve core is arranged to rotate around its shaft when the airflow thrust is greater than the spring force of the coil spring.

[0006] Preferably, the surfaces of the one side of the core part and the one side of the valve core in contact are both conical surfaces, and the gas outlet of the second airflow channel extends to the conical surface of the core part.

[0007] Preferably, the included angle between the conical surface and the horizontal direction is 45°-60°.

[0008] Preferably, the middle part of the screw rod and the lower end of the screw rod form a step, the middle part of the screw rod is coaxially provided with a retainer, and the inner ring of the bearing is press-fitted with the retainer.

[0009] Preferably, the other side of the valve core and the other side of the core are provided with steps that can cooperate with each other, when the lower end surface of the valve core on one side is abutted to one side of the core under the action of the coil spring force, the valve core step and the core step have a certain distance.

[0010] Preferably, the locking device further comprises a locking nut, an inner nut, an anti-rotation pad and a retreat stop nut.

[0011] The upper end of the screw is sequentially assembled with the inner nut, the anti-rotation pad and the locking nut from inside to outside, the locking nut locks the screw on the valve cover, and the upper end of the screw is further provided with the retreat stop nut.

[0012] Preferably, the locking nut and the anti-rotation pad are matched through the conical protrusion and the conical groove, and the anti-rotation pad and the inner nut are matched through the tooth shape.

[0013] Preferably, the valve cover and the valve seat are connected through threads.

[0014] The present application at least has the following beneficial effects: the rotary opening gas valve provides a counter force through the coil spring, and establishes a flow area of different sizes by rotating different angles, so as to adapt to the demand of different displacement. Since the valve plate moves around the rotation shaft, there is no vibration in the axial direction; at the same time, the valve plate does not need to be made into a thin sheet to reduce the impact load, so the shaking problem of the valve plate is also avoided. According to the different intake pressure and temperature, the pre-compression force of the coil spring can be adjusted by adjusting the initial angle of the screw, so as to adapt to the opening pressure requirement of different working conditions.

[0015] Other advantages, objects and features of the present application will be apparent from the following description, and will be understood by those skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 is a schematic view of the rotary compressor gas valve of the present application after assembly;

[0017] Fig. 2 is a schematic view of the rotary compressor gas valve of the present application without the valve cover;

[0018] Fig. 3 is a schematic view of the rotary compressor gas valve of the present application without the valve cover and the valve core;

[0019] Fig. 4 is a sectional view of the rotary compressor gas valve of the present application;

[0020] Fig. 5 is a sectional view of the locking device of the present application.

[0021] Explanation of reference numerals: 1 valve cover, 2 valve seat, 3 valve core, 4 base, 5 core part, 6 first gas flow channel, 7 second gas flow channel, 8 exhaust hole, 9 bearing, 10 screw rod, 11 coil spring, 12 conical surface, 13 retainer ring, 14 locking nut, 15 inner nut, 16 anti-rotation pad, 17 retreat-stopping nut, 18 conical protrusion, 19 tooth shape, 20 locking device. DETAILED DESCRIPTION

[0022] The present application will be described in detail below with reference to the drawings. Those skilled in the art will be able to implement the present application based on these descriptions. Before the present application is described in detail with reference to the drawings, it is particularly important to note that the technical solutions and technical features provided in each part of the present application, including the following descriptions, can be combined with each other without conflict.

[0023] In addition, the embodiments of the present application involved in the following description are generally only a part of the embodiments of the present application, not all the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments in the present application without creative labor should belong to the scope of protection of the present application.

[0024] The present application will be described in detail below with reference to the drawings. Those skilled in the art will be able to implement the present application based on these descriptions. Before the present application is described in detail with reference to the drawings, it is particularly important to note that the technical solutions and technical features provided in each part of the present application, including the following descriptions, can be combined with each other without conflict.

[0025] As shown in Figs. 1-5 The present application provides a rotary compressor air valve, comprising: a valve cover 1, a valve seat 2, a valve core 3 and a locking device 20;

[0026] The valve seat 2 comprises a base 4 and a core part 5, and the base 4 and the core part 5 are assembled in a stepped structure, and the base 4 and the core part 5 are respectively provided with a first gas flow channel 6 and a second gas flow channel 7 which are in communication with each other, and the second gas flow channel 7 extends to one side of the core part 5;

[0027] The valve cover 1 is covered and fixed on the base 4, the core part 5 and the valve core 3 are located in the valve cover 1, and the valve cover 1 is provided with an exhaust hole 8 at the top;

[0028] The valve core 3 is connected and installed on the screw rod 10 of the locking device 20 through the bearing 9, so that the valve core 3 can rotate around the screw rod 10, the lower end of the screw rod 10 is coaxially connected with the coil spring 11, the valve core 3 is also connected with the screw rod 10 through the coil spring 11, the coil spring 11 is wound during the rotation opening process, the spring force of the coil spring 11 is increased to resist the air flow thrust, the initial winding angle of the coil spring 11 can also be adjusted to adjust the pre-compression force, so that the air valve has different opening pressures, the lower end surface of the valve core 3 is abutted with one side of the core part 5 under the action of the spring force of the coil spring 11, so as to seal the second air flow channel 7, the valve core 3 can rotate around the shaft when the air flow thrust is greater than the spring force of the coil spring 11.

[0029] The working principle of the rotary compressor air valve is that the screw rod 10 rotates to wind the coil spring 11, the winding degree of the coil spring 11 is adjusted according to the opening pressure of the air valve, the screw rod 10 is locked through the locking device 20 after reaching the preset opening pressure, the valve core 3 seals the gas outlet of the second air flow channel 7 under the action of the spring force of the coil spring 11, in the use process, the gas enters the second air flow channel 7 through the first air flow channel 6 of the base 4, when the opening pressure is greater than the spring force of the coil spring 11, the valve core 3 is opened by the air pressure, the gas enters the space surrounded by the valve cover 1, and then is discharged through the exhaust hole 8 at the top of the valve cover 1.

[0030] The technical scheme can also include the following technical details to better achieve the technical effects: the surfaces of the core part 5 and the valve core 3 in contact with each other are both conical surfaces 12, the conical degrees of the two are consistent, so that they are fitted together, the gas outlet of the second air flow channel 7 extends to the conical surface 12 of the core part 5, and the conical surface 12 of the valve core 3 is used for closing the second air flow channel 7 corresponding to the conical surface 12 of the core part 5.

[0031] The technical scheme can also include the following technical details to better achieve the technical effects: due to the different angles of the different conical surfaces 12 of the core part 5 and the valve core 3, the acting forces on the conical surfaces 12 are different, when the included angle between the conical surface 12 and the horizontal direction exceeds the range of 45°-60°, the load in the axial direction is greater than the load in the rotation direction, which can cause the bearing 9 to bear a large friction force in the axial direction.

[0032] The technical scheme can also include the following technical details to better achieve the technical effects: the middle part of the screw rod 10 and the lower end of the screw rod 10 form a step, the middle part of the screw rod 10 is coaxially provided with a check ring 13, the check ring 13 is limited to move downward through the step, and the bearing 9 is pressed on the check ring 13, the check ring is arranged to press the inner ring of the bearing, so as to prevent the inner ring and the outer ring from rotating at the same time.

[0033] The technical scheme can further include the following technical details to better achieve the technical effects: the valve core 3 and the core 5 are provided with steps that can cooperate with each other, when the lower end surface of the valve core 3 on one side is abutted with one side of the core 5 under the spring force of the coil spring 11, the steps of the valve core 3 and the steps of the core 5 have a certain distance. The steps of the core 5 and the steps of the valve core 3 cooperate to limit the rotation of the valve core 3, and it should be noted that the steps of the valve core 3 should have sufficient distance from the steps of the core 5 to ensure the opening angle of the air valve.

[0034] The technical scheme can further include the following technical details to better achieve the technical effects: the locking device 20 further includes a locking nut 14, an inner nut 15, an anti-rotation pad 16 and a retreat stop nut 17.

[0035] The upper end of the screw rod 10 is sequentially assembled from inside to outside with the inner nut 15, the anti-rotation pad 16 and the locking nut 14, the locking nut locks the screw rod 10 on the valve cover 1, and the upper end of the screw rod 10 is further provided with the retreat stop nut 17. In the locking device 20, the initial spring force of the coil spring 11 is adjusted by adjusting the initial angle of the screw rod 10 and then tightening the locking nut 14, and the anti-rotation pad 16 is prevented from being popped out by the retreat stop nut 17.

[0036] The technical scheme can further include the following technical details to better achieve the technical effects: the locking nut 14 and the anti-rotation pad 16 are matched by the conical protrusion 18 and the conical groove, and the anti-rotation pad 16 and the inner nut 15 are matched by the tooth-shaped structure 19. The matching of the conical protrusion 18 and the conical groove between the locking nut 14 and the anti-rotation pad 16 prevents the locking nut 14 from rotating, and the tooth-shaped structure 19 between the inner nut 15 and the anti-rotation pad 16 also prevents the inner nut 15 from rotating, thereby effectively locking the screw rod 10.

[0037] The technical scheme can further include the following technical details to better achieve the technical effects: the valve cover 1 and the valve seat 2 are connected by threads, which facilitates the disassembly and assembly of the compression air valve during rotation.

[0038] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the embodiments shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A rotary compressor valve characterized by, The utility model relates to a valve, comprising: The valve seat comprises a base and a core part, and the base and the core part are respectively provided with a first gas flow channel and a second gas flow channel which are communicated with each other, and the second gas flow channel extends to one side of the core part; the valve cover is fixed on the base, the core part and the valve core are located in the valve cover, and the top of the valve cover is provided with an exhaust hole; the valve core is connected and installed on the screw rod of the locking device through a bearing, so that the valve core can rotate around the screw rod, the lower end of the screw rod is coaxially connected with a coil spring, the valve core is also connected with the screw rod through the coil spring, one side of the lower end surface of the valve core is abutted against one side of the core part under the action of the spring force of the coil spring to seal the second gas flow channel, and the valve core is arranged to rotate around the shaft when the gas flow thrust is greater than the spring force of the coil spring; The surfaces of one side of the core part and one side of the valve core in contact are both conical surfaces, and the gas outlet of the second gas flow channel extends to the conical surface of the core part; The locking device further comprises a locking nut, an inner nut, an anti-rotation pad and a retreat-stopping nut; The upper end of the screw rod is sequentially assembled from inside to outside with the inner nut, the anti-rotation pad and the locking nut, the locking nut locks the screw rod on the valve cover, and the upper end of the screw rod is further provided with the retreat-stopping nut. The locking nut and the anti-rotation pad are matched through a conical protrusion and a conical groove, and the anti-rotation pad and the inner nut are matched through a toothed structure. The included angle between the conical surface and the horizontal direction is 45 DEG ~ 60 DEG.

2. The rotary compressor valve of claim 1, wherein, The middle part of the screw rod and the lower end of the screw rod form a step, the middle part of the screw rod is coaxially provided with a retaining ring, and the inner ring of the bearing is tightly arranged with the retaining ring.

3. The rotary compressor valve of claim 1, wherein, The other side of the valve core and the other side of the core part are both provided with steps which can be matched with each other, when one side of the lower end surface of the valve core is abutted against one side of the core part under the action of the spring force of the coil spring, the step of the valve core and the step of the core part have a certain distance.

4. The rotary compressor valve of claim 1, wherein The valve cover and the valve seat are connected through threads.

5. The rotary compressor valve of claim 1, wherein ​

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