CN218118729U

CN218118729U - One-way valve for pneumatic supercharger

Info

Publication number: CN218118729U
Application number: CN202220937475.3U
Authority: CN
Inventors: 程子健
Original assignee: Jinan Deke Pump Co ltd
Current assignee: Jinan Deke Pump Co ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-12-23
Anticipated expiration: 2032-04-21

Abstract

The utility model relates to a technical field of control valve discloses a check valve for pneumatic booster, and it includes the casing, sets up disk seat and the case of sliding connection in the casing, has seted up on the disk seat and has held case one end and insert the breach, and the terminal surface of disk seat is contradicted with the diapire of breach, and the week side of disk seat is contradicted with the perisporium of breach, is provided with on the case and drives the valve core orientation and be close to the deciding power drive assembly of disk seat direction motion. This application is through setting up the deciding power drive assembly of casing, disk seat, case and drive valve element motion, offers the breach that holds the case on the disk seat, and after the case was closed the centre bore of disk seat, the terminal surface of case was contradicted with the diapire of breach, and global of breach of case are contradicted, has increased the area of connection of case and disk seat promptly, and then reduces the sealed condition emergence of the easy pressure release between disk seat and the case.

Description

One-way valve for pneumatic supercharger

Technical Field

The application relates to the technical field of control valves, in particular to a one-way valve for a pneumatic booster.

Background

The pneumatic booster is a pneumatic reciprocating hydraulic pump, is a novel power machine gradually developed in recent years, and the check valve is a key component on the pneumatic booster.

In the related art, for example, chinese patent publication No. CN107606250A discloses a check valve for a pneumatic supercharger, which includes a valve housing, and a valve seat, a valve core, a support seat, a spring and a seal ring installed in the valve housing, wherein one end of the valve core is fixedly connected to the support seat through an expanding opening at the tail of the valve core after sequentially passing through a guide hole in the middle of the valve seat and a rear spring, a metal sealing pair is formed between the valve seat and the valve core, and the valve seat and the valve housing are sealed by the seal ring. When the pressure of the valve core towards one side of the valve seat is smaller than the pressure of the valve core away from one side of the valve seat, the valve core moves towards the direction close to the valve seat under the action of pressure difference, then the valve seat is abutted against the valve core, and at the moment, the sealing pair is closed.

In view of the above-mentioned related art, the inventors have considered that since the metal seal is provided between the valve seat and the valve body, there is a drawback that the seal between the valve seat and the valve body is easily released.

SUMMERY OF THE UTILITY MODEL

In order to alleviate the problem that the seal between the valve seat and the valve core is easy to release pressure, the application provides a one-way valve for a pneumatic booster.

The application provides a check valve for pneumatic booster adopts following technical scheme:

the one-way valve for the pneumatic supercharger comprises a shell, a valve seat and a valve core, wherein the valve seat is arranged in the shell, the valve core is connected in the shell in a sliding mode, one end of the valve core is accommodated in an insertion notch, the end face of the valve seat is abutted to the bottom wall of the notch, the peripheral side face of the valve seat is abutted to the peripheral wall of the notch, and a constant force driving assembly for driving the valve core to move towards the direction close to the valve seat is arranged on the valve core.

By adopting the technical scheme, when the pressure of one side of the valve core, which is far away from the valve seat, is smaller than the pressure of one side of the valve core, which is far towards the valve seat, the valve core overcomes the constant force driving assembly to move towards the direction of the direction far away from the valve seat, so that the end surface and the peripheral surface of the valve core are respectively separated from the bottom wall and the peripheral wall of the notch, then the two sides of the valve core are communicated, and the pressure difference of the two sides of the valve core is gradually reduced; when the pressure of case both sides is close when equal, the case moves towards the direction that is close to the disk seat under the effect of deciding power drive assembly to make the terminal surface of case contradict with the diapire of breach, the global conflict of case and breach has increased the area of contact of case with the disk seat promptly, and then has reduced the sealed condition emergence of pressure release easily between disk seat and the case.

Optionally, a guide pipe is fixedly connected in a central hole of the valve seat, a guide rod is fixedly connected to the valve core, and the guide rod is slidably inserted into the guide pipe.

Through adopting above-mentioned technical scheme, when the case moved under the effect of pressure differential or constant force drive assembly, the case drove the guide bar motion, and the relative slip takes place for guide bar and stand pipe, makes the sliding fit of guide bar and stand pipe then lead to the motion of case, and then stability when increasing the case motion.

Optionally, the constant force driving assembly includes a driving spring sleeved on the guide rod and a blocking block fixedly connected to one end of the guide rod far away from the valve core, and two ends of the driving spring respectively abut against the guide tube and the blocking block.

Through adopting above-mentioned technical scheme, the pressure that deviates from disk seat one side when the case is less than the pressure that the case deviates from disk seat one side, and when the elasticity of driving spring can be overcome to the pressure differential of case both sides, the case moves towards the direction of keeping away from the disk seat under the effect of pressure differential, the case drives the guide bar motion, the guide bar drives and blocks the piece motion, it compresses the spring under the effect of stand pipe to block the piece, along with the pressure differential of case both sides reduces gradually, the case moves towards the direction that is close to the disk seat under the elastic force effect of spring, and then realize opening and closing the disk seat centre bore according to the pressure differential of case both sides.

Optionally, a sealing ring is arranged on the bottom wall of the notch, and the sealing ring is abutted against the end face of the valve core.

Through adopting above-mentioned technical scheme, when the one end that the case is close to the disk seat inserted the breach in, the global wall of case and breach is contradicted, and the terminal surface and the sealing washer of case are contradicted, and then increase the connection leakproofness between case and the disk seat.

Optionally, an annular groove is formed in the bottom wall of the notch, and the sealing ring is arranged in the annular groove.

Through adopting above-mentioned technical scheme, set up the annular on the diapire of breach and with the sealing washer setting in the annular, can increase the stability of sealing washer.

Optionally, a plurality of stoppers of equal fixedly connected with on the both sides wall of annular notch department, the stopper is used for right the sealing washer is spacing.

Through adopting above-mentioned technical scheme, set up the stopper in the notch department of annular, can reduce the sealing washer and break away from the condition emergence that goes out from the annular, further increase the stability of sealing washer.

Optionally, a plurality of abutting springs are arranged at intervals on the groove bottom of the annular groove, and two ends of each abutting spring are respectively abutted against the sealing ring and the groove bottom of the annular groove.

Through adopting above-mentioned technical scheme, when the one end of case was inserted in the breach, the case was contradicted with the sealing washer gradually to moving the sealing washer towards the tank bottom department of annular, the sealing washer drives to propping tight spring, finally makes the terminal surface of case contradict with the tank bottom of breach, and the sealing washer takes place to warp under the effect of propping tight spring and case this moment, and the cell wall of the global and annular of sealing washer and the terminal surface of case promptly support tightly, and then increase the sealed effect of sealing washer to case and disk seat.

Optionally, the abutting spring abuts against the sealing ring through a ring piece, and the ring piece is connected in the ring groove in a sliding mode.

Through adopting above-mentioned technical scheme, when the terminal surface of case was driven the sealing washer, the sealing washer was driven the ring piece, made the ring piece compress the spring then, through setting up the ring piece, can increase the atress homogeneity of sealing washer, reduced the condition emergence of sealing washer local deformation.

In summary, the present application includes at least one of the following beneficial technical effects:

1. by arranging the shell, the valve seat, the valve core and the constant force driving assembly for driving the valve core to move, the valve seat is provided with a notch for accommodating the valve core, after the valve core closes a central hole of the valve seat, the end surface of the valve core is abutted against the bottom wall of the notch, and the peripheral surface of the valve core is abutted against the peripheral surface of the notch, so that the connecting area of the valve core and the valve seat is increased, and the situation that the sealing between the valve seat and the valve core is easy to release pressure is further reduced;

2. by arranging the guide pipe and the guide rod, the guide rod is slidably arranged in the guide pipe in a penetrating manner, when the valve core moves, the guide rod and the guide pipe slide relatively, so that the guide pipe and the guide rod are in sliding fit to guide the movement of the valve core, and the movement stability of the valve core is further improved;

3. through setting up drive spring and block the piece, the spring cup joints in the outside of guide bar, blocks a piece fixed connection and keeps away from the one end of case at the guide bar, and the both ends of spring are contradicted with block piece and stand pipe respectively, realize opening and closing the disk seat centre bore according to the pressure differential of case both sides promptly.

Drawings

FIG. 1 is a schematic structural view of a check valve according to an embodiment of the present application;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is a partial structural schematic diagram of a valve seat in the check valve of the embodiment of the present application, and mainly shows a limiting block.

Description of reference numerals: 100. a housing; 110. a seal ring; 200. a valve seat; 210. a notch; 211. a ring groove; 212. a seal ring; 213. a limiting block; 214. a ring sheet; 215. the spring is tightly propped; 220. a guide tube; 300. a valve core; 310. a guide rod; 400. a constant force driving assembly; 410. a drive spring; 420. a stop block.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a check valve for a pneumatic booster.

Referring to fig. 1, a check valve for a pneumatic booster includes a housing 100, a valve seat 200, and a valve element 300, wherein the valve seat 200 is coaxially disposed with the housing 100, and the valve seat 200 is sealingly connected with the housing 100 by a sealing ring 110. The valve member 300 is disposed coaxially with the housing 100, and the valve member 300 is slidably coupled with the housing 100 in a direction approaching or departing from the valve seat 200. The end face, facing the valve core 300, of the valve seat 200 is provided with an annular notch 210 for accommodating the valve core 300, after the valve core 300 closes the central hole in the valve seat 200, one end, close to the valve seat 200, of the valve core 300 is inserted into the notch 210, so that the end face of the valve core 300 is abutted against the bottom wall of the notch 210, the circumferential surface of the valve core 300 is abutted against the circumferential surface of the notch 210, namely, the contact area between the valve core 300 and the valve seat 200 is increased, and therefore the situation that pressure is easily relieved between the valve core 300 and the valve seat 200 is reduced.

In order to facilitate the insertion of the valve element 300 into the notch 210, a guide surface is provided on the end surface of the valve element 300 facing the valve seat 200, and when the valve element 300 is inserted into the valve seat 200, the guide surface on the valve element 300 guides the valve element 300, so that the situation that the valve element 300 is difficult to be inserted into the notch 210 of the valve seat 200 is reduced, and the effect of facilitating the insertion of the valve element 300 into the notch 210 is achieved.

With reference to fig. 1, in order to realize that the valve element 300 automatically opens and closes the central hole of the valve seat 200 according to the pressure difference between the two sides of the valve element 300, a guide tube 220 is coaxially and fixedly connected to the central hole of the valve seat 200, a guide rod 310 is coaxially and fixedly connected to one end of the valve element 300 facing the valve seat 200, and the guide rod 310 is coaxially inserted into the guide tube 220. The valve core 300 is provided with a constant force driving assembly 400, the constant force driving assembly 400 comprises a driving spring 410 and a blocking block 420, the driving spring 410 is coaxially sleeved on the guide rod 310, the blocking block 420 is fixedly connected to one end, far away from the valve core 300, of the guide rod 310, and two ends of the driving spring 410 are respectively abutted against the guide pipe 220 and the blocking block 420.

When the pressure of the valve element 300 towards one side of the valve seat 200 is greater than the pressure of the valve element 300 away from one side of the valve seat 200, and the pressure difference between the two sides of the valve element 300 can overcome the elastic force of the driving spring 410, the valve element 300 moves towards the direction away from the valve seat 200, the valve element 300 drives the guide rod 310 to move, the guide rod 310 drives the blocking block 420 to move, the driving spring 410 is compressed under the action of the blocking block 420 and the guide pipe 220, so that the valve element 300 is separated from the notch 210 and is discharged, and the central hole of the valve seat 200 is opened; the pressure on both sides of the valve element 300 is gradually the same, and at this time, the valve element 300 moves towards the direction close to the valve seat 200 under the action of the elastic force of the driving spring 410, and the valve element 300 is gradually inserted into the notch 210, i.e. the automatic opening and closing of the central hole of the valve element 300 according to the pressure difference on both sides of the valve element 300 is realized.

Referring to fig. 2 and 3, in order to further increase the sealing performance between the valve element 300 and the valve seat 200, a ring groove 211 is formed in the bottom wall of the notch 210, a sealing ring 212 is slidably connected to the ring groove 211, and the sliding direction of the sealing ring 212 is a direction approaching to or departing from the bottom of the ring groove 211. Both side walls at the notch of the ring groove 211 are fixedly connected with a plurality of limiting blocks 213, and the limiting blocks 213 on both side walls are arranged oppositely. The end surface of each limiting block 213 facing the groove bottom of the ring groove 211 is provided with an arc surface corresponding to the sealing ring 212. The ring piece 214 is arranged on one side, facing the groove bottom of the ring groove 211, of the sealing ring 212, the ring piece 214 is connected in the ring groove 211 in a sliding mode, the side, facing away from the sealing ring 212, of the ring piece 214 is provided with a plurality of abutting springs 215, the abutting springs 215 are sequentially arranged at intervals along the circumferential direction of the ring groove 211, and two ends of each abutting spring 215 are abutted against the ring piece 214 and the groove bottom of the ring groove 211 respectively.

When the valve plug 300 opens the central hole of the valve seat 200, the sealing ring 212 slides towards the direction away from the bottom of the annular groove 211 under the action of the abutting spring 215, so that the limiting block 213 limits the sealing ring 212, and the occurrence of the situation that the sealing ring 212 slides out of the annular groove 211 is reduced. When the valve element 300 is gradually inserted into the notch 210, the end surface of the valve element 300 gradually abuts against the sealing ring 212, and finally the end surface of the valve element 300 abuts against the bottom wall of the notch 210, and at this time, the sealing ring 212 deforms under the action of the abutting spring 215 and the end surface of the valve element 300, that is, the sealing ring 212 abuts against the groove wall of the annular groove 211 and abuts against the end surface of the valve element 300, so that the sealing performance between the valve element 300 and the valve seat 200 is further improved.

The implementation principle of the one-way valve for the pneumatic booster in the embodiment of the application is as follows: when the pressure of the side of the valve element 300 facing the valve seat 200 is greater than the pressure of the side of the valve element 300 facing away from the valve seat 200, and the pressure difference between the two sides of the valve element 300 can overcome the elastic force of the driving spring 410, the valve element 300 moves in the direction away from the valve seat 200, at this time, the driving spring 410 is compressed, the central hole of the valve seat 200 is opened, and the pressure difference between the two sides of the valve element 300 is gradually reduced. When the pressure difference between the two sides of the valve element 300 is not enough to overcome the elastic force of the driving spring 410, the valve element 300 moves towards the direction close to the valve seat 200 under the action of the driving spring 410, one end of the valve element 300 close to the valve seat 200 is inserted into the notch 210 of the valve element 300, finally, the end surface of the valve element 300 is abutted against the bottom wall of the notch 210, the peripheral surface of the valve element 300 is abutted against the peripheral surface of the notch 210, and at this time, the central hole of the valve seat 200 is closed.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A one-way valve for a pneumatic booster comprising a housing (100), a valve seat (200) disposed in the housing (100), and a valve cartridge (300) slidably connected in the housing (100), characterized in that: the valve seat (200) is provided with a notch (210) for inserting one end of the valve core (300), the end face of the valve seat (200) is abutted against the bottom wall of the notch (210), the peripheral side face of the valve seat (200) is abutted against the peripheral wall of the notch (210), and the valve core (300) is provided with a constant force driving assembly (400) for driving the valve core (300) to move towards the direction close to the valve seat (200).

2. A one-way valve for a pneumatic booster of claim 1, wherein: a guide pipe (220) is fixedly connected in a central hole of the valve seat (200), a guide rod (310) is fixedly connected on the valve core (300), and the guide rod (310) is slidably arranged in the guide pipe (220).

3. A one-way valve for a pneumatic booster of claim 2, wherein: the constant force driving assembly (400) comprises a driving spring (410) sleeved on the guide rod (310) and a blocking block (420) fixedly connected to one end, far away from the valve core (300), of the guide rod (310), and two ends of the driving spring (410) are respectively abutted against the guide pipe (220) and the blocking block (420).

4. A check valve for a pneumatic booster as set forth in claim 1 wherein: and a sealing ring (212) is arranged on the bottom wall of the notch (210), and the sealing ring (212) is abutted against the end face of the valve core (300).

5. A check valve for a pneumatic booster as set forth in claim 4 wherein: and a ring groove (211) is formed in the bottom wall of the notch (210), and the sealing ring (212) is arranged in the ring groove (211).

6. A check valve for a pneumatic booster of claim 5 wherein: equal a plurality of stopper (213) of fixedly connected with on the both sides wall of annular (211) notch department, stopper (213) are used for right sealing washer (212) carry on spacingly.

7. A check valve for a pneumatic booster as set forth in claim 5 wherein: a plurality of abutting springs (215) are arranged on the groove bottom of the ring groove (211) at intervals, and two ends of each abutting spring (215) are respectively abutted against the sealing ring (212) and the groove bottom of the ring groove (211).

8. A one-way valve for a pneumatic booster of claim 7, wherein: the abutting spring (215) abuts against the sealing ring (212) through a ring piece (214), and the ring piece (214) is connected in the annular groove (211) in a sliding mode.