CN219911084U - Air valve for compressor - Google Patents

Abstract

The utility model provides an air valve for a compressor, and belongs to the technical field of one-way valves. The spring-mounted limiting device comprises an upper limiter, a lower limiter and a valve plate, wherein the lower limiter is provided with mounting grooves for mounting springs, the spring-mounted limiting device further comprises limiting plates and adjusting bolts, communication holes are formed in the inner bottom wall of each mounting groove in a penetrating mode, the limiting plates are arranged between the springs and the valve plate, the adjusting bolts are in threaded connection in the communication holes, and the adjusting bolts are connected with the limiting plates in a rotating mode after penetrating through the springs. Before the air valve is installed, a worker passes through the adjusting bolt from the communicating hole and connects the limiting piece, so that the limiting piece is sleeved on the polished rod section of the adjusting bolt, meanwhile, the adjusting bolt is in threaded connection with the communicating hole, then the adjusting bolt is gradually screwed out of the communicating hole, the limiting piece is moved by the adjusting bolt and compressed into the installation groove, then the valve plate and the upper limiter are installed, the spring is effectively prevented from elastically propping up against the valve plate and the upper limiter, and the air valve structure is well protected.

Description

Air valve for compressor

Technical Field

The utility model relates to the technical field of one-way valves, in particular to an air valve for a compressor.

Background

The compressor is driven fluid machinery for lifting low-pressure gas into high-pressure gas, the low-temperature low-pressure gas sucked by the air suction pipe drives the piston to compress the piston through the operation of the motor, the high-temperature high-pressure gas is discharged from the exhaust pipe after the compression, the air valve of the compressor is an important part for controlling the gas to be timely sucked into and discharged out of the air cylinder in the compressor, the component of the reciprocating compressor comprises a piston type compressor and a diaphragm compressor, the piston motion is utilized to change the inner volume of the air cylinder, the air inlet valve is opened when the volume is increased, the air outlet valve is closed when the volume is reduced, the air outlet valve is opened, the air inlet valve is closed, the compression is completed, and the inner volume of the compression cavity is changed through one or a plurality of pistons which reciprocate, so that the air valve plays a key role in the compression process.

The patent of the bulletin number CN215981125U of authorizing discloses a compressor air valve, including valve gap subassembly and disk seat subassembly, the bottom of valve gap subassembly and the top swing joint of disk seat subassembly, valve gap subassembly includes valve gap and bolt, the disk seat subassembly includes lift restriction piece and valve block, a plurality of recess has evenly been seted up at the top of lift restriction piece, the holding tank has been seted up at the top of recess, the valve block sets up the inside at the holding tank, the bottom fixedly connected with of valve block a plurality of push springs, push spring sets up the inside at the recess, push spring's bottom and the bottom fixed connection of recess. The valve plate is used for closing the air hole on the upper valve cover under normal conditions by pushing the spring.

In the use process of the air valve, the conditions of valve plate fracture, spring fatigue and the like can occur, and the air valve needs to be disassembled and the internal parts are replaced and installed again. In the air valve installation process, because the elasticity of the spring is great, in order to make the upper and lower valve gap of air valve closely laminate to the air valve bolt in installation middle part, can pass through the bench clamp with the air valve closely centre gripping, in order to overcome the spring elasticity and make upper and lower valve gap keep laminating state, install the air valve bolt again, but the bench clamp clamping force is great, and the application of force is uneven when the centre gripping air valve, causes the pressure loss to the corner of air valve easily.

Disclosure of Invention

In view of the above, the present utility model provides a gas valve for a compressor.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an air valve that compressor used, including last limiter, lower limiter and valve block, the coaxial annular of seting up on the lower limiter, the coaxial movable mounting of valve block is in the annular, upward corresponding annular position on the limiter is evenly run through along last limiter circumference and is setted up a plurality of upper vent, the mounting groove has been seted up on the interior diapire of annular, be provided with the spring in the mounting groove, still include restriction piece and adjusting bolt, the communication hole has been seted up in running through on being located the interior diapire of every mounting groove on the lower limiter, the restriction piece sets up between spring and valve block, the one end and the interior bottom wall butt of mounting groove of spring, the other end and restriction piece fixed connection, adjusting bolt threaded connection is in the communication hole, adjusting bolt rotates with the restriction piece after passing the spring and is connected.

Further, one end of the adjusting bolt, which is close to the limiting piece, is provided with a second external thread section, the outer wall of the adjusting bolt is also provided with a first external thread section, the threads of the second external thread section and the threads of the first external thread section are opposite in direction, the limiting piece is coaxially provided with a threaded hole, the adjusting bolt is in threaded connection with the limiting piece through the second external thread section, and the adjusting bolt is in threaded connection with the communication hole through the first external thread section.

Further, adjusting bolt includes the bolt head, first screw rod and the second screw rod of order connection, and first external screw thread section sets up on first screw rod, and the second external screw thread section sets up on the second screw rod, and the diameter of first screw rod is greater than the diameter of second screw rod, still is equipped with the polished rod section between second external screw thread section and the first screw rod on the second screw rod, and the length of polished rod section is greater than the thickness of restriction piece.

Further, the limiting sheet is coaxially provided with a step part recessed toward one side of the inner bottom wall of the mounting groove, the depth of the step part is larger than the length from the polish rod section on the second screw rod to the end part, away from the first screw rod, of the second screw rod, and the threaded hole on the limiting sheet is arranged at the bottom of the step part.

Further, a limiting block is arranged on the inner bottom wall of the mounting groove, and when the adjusting bolt is screwed out from the limiting piece to the direction of the communication hole, the limiting block is abutted with the end part of the spring and limits the spring to rotate along the rotation direction of the adjusting bolt.

Further, at least two positioning rods are arranged between the upper limiter and the lower limiter, an upper jack matched with the positioning rods is formed in the bottom wall of the upper limiter, a lower jack matched with the positioning rods is formed in the top wall of the lower limiter, and when the upper limiter is combined with the lower limiter, the positioning rods are simultaneously inserted into the upper jack and the lower jack.

The beneficial effects of the utility model are as follows: before the air valve is installed, an adjusting bolt is firstly extended into the lower limiter through hole and is in threaded connection with the limiting piece, the limiting piece is sleeved on a polished rod section on the adjusting bolt, meanwhile, the adjusting bolt is in threaded connection with the through hole, then, the adjusting bolt is gradually screwed out of the through hole until the first screw is loosened from the through hole, the limiting piece is moved into the installation groove by the adjusting bolt, the spring is compressed into the installation groove, at the moment, the valve plate and the upper limiter are installed, the spring is effectively prevented from being propped against the valve plate and the upper limiter through elasticity, the air valve is not forced to be extruded by bench clamps, and a better protection effect is achieved on the structure of the air valve.

Drawings

Fig. 1 is an overall exploded view of the gas valve of embodiment 1 of the present utility model.

Fig. 2 is an enlarged partial schematic view of the portion a in fig. 1.

Fig. 3 is an enlarged schematic sectional view of the adjusting bolt connecting structure portion of embodiment 1 of the present utility model.

Fig. 4 is a schematic view showing a partially planar cross-sectional structure of a gas valve according to embodiment 2 of the present utility model.

Fig. 5 is a partially enlarged schematic view of the portion B in fig. 4.

Wherein, 1, upper limiter; 11. an upper vent hole; 12. an upper jack; 2. a lower limiter; 21. a ring groove; 22. a lower vent hole; 23. a mounting groove; 24. a spring; 25. a communication hole; 26. a limiting block; 27. a lower jack; 3. a valve plate; 4. limiting slices; 41. a threaded hole; 42. a step portion; 5. an adjusting bolt; 51. a bolt head; 52. a first screw; 53. a second screw; 54. a first external thread segment; 55. a second external thread segment; 56. a polish rod section; 50. perforating; 6. a positioning rod; 7. and (5) connecting bolts.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Example 1

The embodiment of the utility model discloses an air valve for a compressor, which comprises an upper limiter 1, a lower limiter 2 and a valve plate 3, wherein the middle parts of the upper limiter 1 and the lower limiter 2 are coaxially provided with threaded mounting holes, and the threaded mounting holes on the upper limiter 1 and the lower limiter 2 are penetrated through and connected with each other in a threaded manner through a connecting bolt 7 so as to connect and fix the upper limiter 1 and the lower limiter 2. At least one annular groove 21 is coaxially arranged on one surface of the lower limiter 2, which is close to the upper limiter 1, an upper vent hole 11 is formed in the upper limiter 1, corresponding to the annular groove 21, a plurality of upper vent holes 11 are uniformly arranged at intervals along the circumferential direction of the upper limiter 1, a plurality of lower vent holes 22 penetrating through the lower limiter 2 are uniformly distributed on the lower limiter 2 along the circumferential direction of the lower limiter 2 at the position dislocated with the annular groove 21, when the upper limiter 1 and the lower limiter 2 are assembled, a gap is formed between the bottom of the upper vent hole 11 and the top of the lower vent hole 22, and the gap width is smaller than the thickness of the valve plate 3. The valve plate 3 is coaxially embedded in the ring groove 21 and can axially move in the ring groove 21, so that the valve plate 3 can close the upper vent hole 11 or enable the upper vent hole 11 to be communicated with the lower vent hole 22 after being unseated.

The bottom of the ring groove 21 is provided with a plurality of mounting grooves 23, a plurality of mounting grooves 23 are uniformly arranged at intervals along the axial direction of the ring groove 21, a spring 24 is arranged in each mounting groove 23, and the spring 24 is used for pushing the valve plate 3 to move upwards to the limiter 1 so as to seal the upper vent hole 11. In the embodiment of the utility model, the valve plate further comprises a limiting piece 4 and an adjusting bolt 5, wherein the limiting piece 4 is arranged between the spring 24 and the valve plate 3, the limiting piece 4 is integrally and fixedly connected with the spring 24, the bottom of the mounting groove 23 is coaxially provided with a communication hole 25 penetrating through the lower limiter 2, and the air pressure in the mounting groove 23 is communicated with the outer side of the lower valve body in the moving process of the valve plate 3. The communication hole 25 is internally provided with internal threads, the adjusting bolt 5 is in threaded connection with the communication hole 25, and the adjusting bolt 5 penetrates through the spring 24 in the mounting groove 23 and is in rotary connection with the limiting piece 4.

In the embodiment of the utility model, the through hole 50 is coaxially and penetratingly formed in the adjusting bolt 5, so that the air pressure balancing effect can be still achieved in the mounting groove 23 when the adjusting bolt 5 is connected to the lower limiter 2. When the air valve is installed, the adjusting bolts 5 corresponding to the springs 24 on the lower limiter 2 are rotated, the limiting pieces 4 in the installation grooves 23 are pressed against the springs 24, and the springs 24 are compressed to the installation grooves 23, so that the elasticity of the springs 24 can not prevent the upper limiter 1 and the lower limiter 2 from completing assembly when the upper limiter 1 and the lower limiter 2 are assembled, and workers can directly complete assembly of the air valve on a plane workbench.

Example 2

Referring to fig. 4 and 5, embodiment 2 differs from embodiment 1 in that the structure of the adjusting bolt 5 is different.

In the embodiment of the utility model, the adjusting bolt 5 comprises a bolt head 51, a first screw rod 52 and a second screw rod 53 which are sequentially connected, the diameter of the first screw rod 52 is larger than that of the second screw rod 53, a first external thread section 54 is arranged on the outer side of the first screw rod 52, and a second external thread section 55 is arranged on the outer side of the second screw rod 53. The first external thread section 54 on the first screw 52 is matched with the internal thread in the communication hole 25 of the lower limiter 2, the limiting piece 4 is coaxially provided with a threaded hole 41, and the second external thread section 55 on the second screw 53 is matched with the threaded hole 41 on the limiting piece 4.

The first external thread section 54 on the adjusting bolt 5 is threaded in the opposite direction to the second external thread section 55, and the length of the threaded connection of the first external thread section 54 with the communication hole 25 should be smaller than the maximum compression amount of the spring 24 sliding in the gas valve. When the air valve is installed, the adjusting bolt 5 firstly stretches into the installation groove 23 from the communication hole 25, the limiting piece 4 is in threaded connection with the adjusting bolt 5, and then the adjusting bolt 5 is gradually screwed out of the communication hole 25, so that the limiting piece 4 moves in the installation groove 23 and compresses the spring 24, and a worker can assemble the air valve. After the air valve is assembled, a worker completely screws out the first external thread section 54 on the adjusting bolt 5 from the communication hole 25, then pulls the adjusting bolt 5 to keep the first external thread section 54 away from the communication hole 25, and reversely rotates the adjusting bolt 5 to gradually screw out the adjusting bolt 5 from the threaded hole 41 on the limiting plate 4, and after the adjusting bolt 5 is completely separated from the limiting plate 4, the adjusting bolt 5 can be pulled out from the communication hole 25 to keep the communication hole 25 to balance the internal and external air pressure effects of the mounting groove 23.

Further, a polish rod section 56 is further provided on the second screw 53 between the second external thread section 55 and the first screw 52, and the length of the polish rod section 56 should be greater than the thickness of the restriction piece 4. When the adjusting bolt 5 is completely screwed on the limiting piece 4, the polish rod section 56 on the adjusting bolt 5 is completely sleeved in the threaded hole 41 of the limiting piece 4, at this time, during the screwing-out process of the adjusting bolt 5 from the communication hole 25, the second external thread section 55 of the adjusting bolt 5 reversely slides on the limiting piece 4, the second external thread section 55 cannot be matched with the threaded hole 41 on the limiting piece 4, the second screw 53 cannot drive the limiting piece 4 and the spring 24 to rotate together in the mounting groove 23, and the adjusting bolt 5 is more conveniently screwed out of the communication hole 25.

Further, the restriction piece 4 is coaxially provided with a stepped portion 42 recessed toward the inner bottom wall side of the mounting groove 23, the depth of the stepped portion 42 is larger than the length between the polish rod section 56 on the second screw 53 and the end of the second screw 53 far from the first screw 52, and the screw hole 41 on the restriction piece 4 is provided at the bottom of the stepped portion 42. When the second screw rod 53 is connected to the limiting piece 4, the end part of the second screw rod 53 is located in the step part 42 of the limiting piece 4, so that the valve plate 3 can be effectively prevented from being deformed or damaged due to the fact that the second screw rod 53 is abutted against the valve plate 3 in the installation process.

A limiting block 26 is integrally fixed on the inner bottom wall of the mounting groove 23, the cross section of the limiting block 26 is wedge-shaped, and the limiting block 26 can be abutted against the end part of the spring 24 in the mounting groove 23. When the adjusting bolt 5 is screwed out from the limiting piece 4 to the direction of the communication hole 25, the limiting block 26 is abutted with the end part of the spring 24 and limits the spring 24 to rotate along the rotation direction of the adjusting bolt 5, friction between the spring 24 and the inner wall of the mounting groove 23 is reduced, rotation of the spring 24 and the limiting piece 4 is limited, and therefore the screwing-out efficiency of the adjusting bolt 5 from the limiting piece 4 is improved.

In the embodiment of the utility model, at least two positioning rods 6 are further arranged between the upper limiter 1 and the lower limiter 2, and an upper jack 12 and a lower jack 27 which are matched with the positioning rods 6 in size and are opposite in position are respectively arranged on the upper limiter 1 and the lower limiter 2, so that when the air valve is assembled, the positioning rods 6 are assembled, and the installation position and the angle of the upper limiter 1 and the lower limiter 2 in the assembling process can be ensured to be accurate.

The implementation principle of the air valve used by the compressor in the embodiment of the utility model is as follows: before installing the air valve, a worker firstly stretches the adjusting bolt 5 into the communicating hole 25 of the lower limiter 2 and is in threaded connection with the limiting piece 4, the limiting piece 4 is sleeved on the polished rod section 56 of the adjusting bolt 5, meanwhile, the adjusting bolt 5 is in threaded connection with the communicating hole 25, then the adjusting bolt 5 is gradually screwed out of the communicating hole 25 until the first screw 52 is loosened from the communicating hole 25, the limiting piece 4 moves into the installing groove 23 by using the adjusting bolt 5, the spring 24 is compressed into the installing groove 23, at the moment, the valve plate 3 and the upper limiter 1 are installed, the spring 24 is effectively prevented from elastically propping the valve plate 3 and the upper limiter 1, after the upper limiter 1 is installed, the adjusting bolt 5 is detached from the limiting piece 4, the adjusting bolt 5 is pulled out of the communicating hole 25, and the whole installation process of the air valve is completed.

It will be apparent to those skilled in the art that while preferred embodiments of the present utility model have been described, additional variations and modifications may be made to these embodiments once the basic inventive concepts are known to those skilled in the art. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (6)

1. The utility model provides an air valve that compressor used, includes limiter (1), lower limiter (2) and valve block (3), annular (21) have been seted up on lower limiter (2) coaxial, coaxial movable mounting of valve block (3) is in annular (21), on limiter (1) correspond annular (21) position and evenly run through and have seted up a plurality of air vent (11) along last limiter (1) circumference, mounting groove (23) have been seted up on the interior diapire of annular (21), be provided with spring (24) in mounting groove (23), its characterized in that: still including restriction piece (4) and adjusting bolt (5), on being located on lower limiter (2) on the interior diapire of every mounting groove (23), set up communication hole (25) in between spring (24) and valve block (3) limit piece (4), the one end and the interior bottom wall butt of mounting groove (23) of spring (24), the other end and limit piece (4) fixed connection, adjusting bolt (5) threaded connection is in communication hole (25), adjusting bolt (5) pass behind spring (24) with limit piece (4) rotate and be connected.

2. The air valve for the compressor according to claim 1, wherein a second external thread section (55) is arranged at one end, close to the limiting sheet (4), of the adjusting bolt (5), a first external thread section (54) is further arranged on the outer wall of the adjusting bolt (5), the second external thread section (55) is opposite to the first external thread section (54) in thread direction, a threaded hole (41) is coaxially formed in the limiting sheet (4), the adjusting bolt (5) is in threaded connection with the limiting sheet (4) through the second external thread section (55), and the adjusting bolt (5) is in threaded connection with the communication hole (25) through the first external thread section (54).

3. The air valve for the compressor according to claim 2, wherein the adjusting bolt (5) comprises a bolt head (51), a first screw rod (52) and a second screw rod (53) which are sequentially connected, the first external thread section (54) is arranged on the first screw rod (52), the second external thread section (55) is arranged on the second screw rod (53), the diameter of the first screw rod (52) is larger than that of the second screw rod (53), a polished rod section (56) is further arranged between the second external thread section (55) and the first screw rod (52) on the second screw rod (53), and the length of the polished rod section (56) is larger than the thickness of the limiting piece (4).

4. A gas valve for a compressor according to claim 3, wherein the limiting piece (4) is coaxially provided with a step portion (42) recessed toward one side of the inner bottom wall of the mounting groove (23), the depth of the step portion (42) is greater than the length between the polish rod section (56) on the second screw rod (53) and the end portion of the second screw rod (53) far away from the first screw rod (52), and the threaded hole (41) on the limiting piece (4) is arranged at the bottom of the step portion (42).

5. A gas valve for a compressor according to claim 3, wherein a stopper (26) is provided on the inner bottom wall of the mounting groove (23), and when the adjusting bolt (5) is screwed out from the restricting piece (4) toward the communicating hole (25), the stopper (26) abuts against the end of the spring (24) and restricts the spring (24) from rotating in the rotation direction of the adjusting bolt (5).

6. The air valve for the compressor according to any one of claims 1 to 5, wherein at least two positioning rods (6) are arranged between the upper limiter (1) and the lower limiter (2), an upper jack (12) matched with the positioning rods (6) is formed in the bottom wall of the upper limiter (1), a lower jack (27) matched with the positioning rods (6) is formed in the top wall of the lower limiter (2), and when the upper limiter (1) and the lower limiter (2) are combined, the positioning rods (6) are simultaneously inserted into the upper jack (12) and the lower jack (27).