CN213839699U

CN213839699U - Universal one-way valve

Info

Publication number: CN213839699U
Application number: CN202022780861.XU
Authority: CN
Inventors: 邓玉林; 李余; 吴爱青; 吴开怀
Original assignee: Mercer Intelligent Technology Jiangsu Co ltd
Current assignee: Mercer Intelligent Technology Jiangsu Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-07-30
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a general type check valve, it includes the valve body, be equipped with the closing plate in the valve body, the intercommunication mouth has been seted up on the closing plate, it is provided with the circulation dish to be located intercommunication mouth one side in the valve body, the opening has been seted up on the circulation dish, set up the guiding hole coaxial with the circulation dish on the circulation dish, it has the guide bar to slide in the guiding hole, the guide bar is equipped with the shutoff head towards the one end of intercommunication mouth, be equipped with the spring between shutoff head and the circulation dish, the shutoff head supports the mouth wall and the closed intercommunication mouth of tight intercommunication mouth under the extrusion of spring. This application has the complex mode through the circulation dish of seting up the opening and the guide bar, has reduced the stopper head and has produced frictional possibility with the valve body inner wall in the motion process, has reduced the resistance of stopper head motion, has promoted the effect of the sensitivity of check valve.

Description

Universal one-way valve

Technical Field

The application relates to the field of water pipe valves, in particular to a universal check valve.

Background

At present, a check valve is a valve which can only flow along a water inlet and can not return media at a water outlet. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems.

In the related art, a common one-way valve structure comprises a valve pipe, a communication hole, a valve core and a fixed end, wherein a connecting spring is arranged between the valve core and the fixed end, a through-flow cavity is formed in the valve core, and a through-flow hole communicated with the through-flow cavity is formed in the side wall of the valve core. When the valve core is abutted to the wall of the communicating opening by the spring, the valve core seals the one-way valve, when the valve core is extruded by the fluid pressure from one side of the communicating opening, the spring is compressed, the valve core moves to give way, and the fluid flows into the through-flow cavity from the through-flow opening on the side wall of the valve core and flows to the rear side of the valve core.

In view of the above-described related art, the inventors have considered that there are disadvantages that the contact area with the inner wall of the valve body is large when the valve body moves as a whole, the frictional resistance is large, and the sensitivity of the check valve to the fluid pressure from the direction of the communication port is weak.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that the one-way valve has low sensitivity to the pressure of fluid from the direction of a communication port, the application provides a universal one-way valve.

The application provides a general type check valve adopts following technical scheme:

the utility model provides a general type check valve, includes the valve body, be equipped with the closing plate in the valve body, the intercommunication mouth has been seted up on the closing plate, it is provided with the circulation dish to lie in intercommunication mouth one side in the valve body, the circulation has been seted up on the dish with the coaxial guiding hole of circulation dish, it has the guide bar to slide in the guiding hole, the guide bar is equipped with the shutoff head towards the one end of intercommunication mouth, be equipped with the spring between shutoff head and the circulation dish, the shutoff head supports the mouth wall and the closed intercommunication mouth of tight intercommunication mouth under the extrusion of spring.

By adopting the technical scheme, the flow disc is arranged, the guide rod which is guided to slide through the hole wall of the guide hole on the flow disc drives the blocking head to control the opening and closing of the communication hole, the inner wall of the valve body is not contacted when the blocking head moves, the resistance is small, fluid flows in from the communication hole on the flow disc after flowing in from the communication hole, the degree of deflection of the movement direction of the fluid is small, the liquid flow resistance is reduced, and the sensitivity degree of the one-way valve to the fluid pressure is improved.

Optionally, be equipped with spacing boss on the valve body inner wall, the lateral wall that the circulation dish is close to intercommunication mouth one side is contradicted with spacing boss, lie in the circulation dish on the valve body inner wall and keep away from the one side of intercommunication mouth and seted up annular screens groove, annular screens inslot is equipped with the jump ring, the circulation dish is kept away from one side lateral wall of spacing boss and is contradicted with the jump ring.

Through adopting above-mentioned technical scheme, through setting up spacing boss and annular screens groove, when the case of installation check valve, the staff at first with the circulation dish, guide bar and spring are assembled, then in the middle of will circulating the dish and pushing into the valve body, make the lateral wall of circulation dish support tight spacing boss, then put into annular screens groove after compressing tightly the jump ring through tweezers, loosen the centre gripping back of tweezers, the jump ring is unfolded and is supported the cell wall in tight annular screens groove, block the one end of keeping away from the intercommunication mouth at the circulation dish through the jump ring, the position of circulation dish is restricted jointly to the spacing boss of cooperation, the installation is simple, the location is reliable, simple structure is convenient for produce.

Optionally, the circulation holes on the circulation disc are distributed in an annular array along the circumferential direction of the guide hole.

Through adopting above-mentioned technical scheme, increase fluidic flow area through setting up a plurality of opening, reduce the resistance, simultaneously because the even distribution of opening with annular array's mode is in the circumference of guiding hole to make the even circulation hole that passes through after the fluid gets into from the intercommunication mouth, reduce fluidic turbulent flow, thereby further reduced fluid circulation resistance.

Optionally, the blocking head is in a shape of a circular truncated cone, the end with the smaller area is arranged towards the communication port, an annular groove is formed in the circumferential side wall of the blocking head, and an O-shaped rubber ring is arranged in the annular groove.

Through adopting above-mentioned technical scheme, owing to adopted O type rubber circle, make the lateral wall of shutoff head and intercommunication mouth closed with the mode of soft contact, be favorable to reducing the friction and maintain the stability of direction, also reduced impurity and detained in fluid medium department at the intercommunication mouth simultaneously, make the motion of shutoff head produce the possibility of card paper, O type rubber circle is inseparabler with intercommunication mouth department lateral wall contact simultaneously, and the leakproofness is good.

Optionally, the communicating port is set to be horn-shaped and the opening with the larger caliber faces the plugging head, an expansion groove is formed in the port wall of the communicating port towards one end of the plugging head, and the expansion groove is horn-shaped and the inclination angle of the groove wall is larger than that of the communicating port groove wall.

By adopting the technical scheme, the communication port is arranged to be horn-shaped, so that friction between the sealing head and the side wall of the connecting barrel port during movement is reduced, the sensitivity of the one-way valve to forward fluid pressure is further improved, namely, the sensitivity of the one-way valve is improved, the sealing head is separated from the side wall of the communication port due to the arrangement of the expansion groove, when fluid flows in the one-way valve, the flow area of the fluid is larger, and the possibility that the sealing head is blocked by impurities to cause the failure of the one-way valve is further reduced.

Optionally, a plurality of lubricating grooves are formed in the hole wall of the guide hole, and the lubricating grooves are annularly arranged around the guide rod.

Through adopting above-mentioned technical scheme, through setting up the lubrication groove, inject lubricating grease in the lubrication groove, lubricating grease is used in between the pore wall of guide bar and guiding hole, makes the frictional force between guide bar and the guiding hole littleer, reduces the possibility that the stopper head motion is retardant, has promoted check valve sensitivity.

Optionally, the hole walls of the two ends of the guide hole are provided with annular oil baffle plates, the oil baffle plates are abutted against the circumferential side wall of the guide rod, and two oil baffle plates are respectively provided with an oil blocking rubber ring at one side away from each other.

Through adopting above-mentioned technical scheme, through setting up the oil baffle and hindering oily rubber ring, when the guide bar moves to the state with the separation of guiding hole lateral wall with the part that lubricating grease is infected with, the oil baffle scrapes the lubricating grease who is infected with to block lubricating grease in the guiding hole, reduced the lubricating grease loss, also reduced the possibility that the fluid is polluted by lubricating grease.

Optionally, telescopic corrugated pipes are fixedly arranged between the side walls at the two ends of the guide rod and the side walls of the adjacent circulation discs, and the telescopic corrugated pipes are fixedly connected with the side walls, located at the hole openings of the guide holes, of the circulation discs.

Through adopting above-mentioned technical scheme, through setting up the concertina wave pipe, with guide bar and fluid separation, further reduced in the middle of the lubricated grease sneaks into the fluid, cause the possibility of fluid pollution.

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

1. the possibility that the blocking head rubs with the inner wall of the valve body in the movement process is reduced, the movement resistance of the blocking head is reduced, and the sensitivity of the one-way valve is improved in a matching mode of the flow disc provided with the flow hole and the guide rod;

2. by arranging the horn-shaped communication port and the O-shaped rubber ring, the sealing performance of the sealing plug for sealing the communication port is improved, and the possibility of clamping stagnation during movement of the sealing plug is reduced;

3. through setting up the lubrication groove, set up lubricating grease in the lubrication groove, further reduced the frictional force between guide bar and the guiding hole pore wall, reduced the lubricating grease simultaneously through the cooperation of hindering oil rubber ring, fender oilboard and flexible bellows and flowed out the possibility that causes fluid pollution.

Drawings

Fig. 1 is a schematic cross-sectional structure diagram for showing the overall structure of a check valve in embodiment 1 of the present application.

Fig. 2 is a schematic diagram of a structure of a one-way valve internal flow disc in embodiment 1 of the present application.

Fig. 3 is a schematic cross-sectional structure diagram for showing the overall structure of the check valve in embodiment 2 of the present application.

Fig. 4 is an enlarged schematic view of a structure at a in fig. 3.

Fig. 5 is a schematic cross-sectional view showing the internal structure of a check valve according to example 3 of the present application.

Fig. 6 is an enlarged structural view of a portion B in fig. 5.

Fig. 7 is a schematic cross-sectional view of a check valve according to the present application for embodying the related art.

Description of reference numerals: 1. a valve body; 11. a limiting boss; 12. an annular clamping groove; 121. a clamp spring; 2. a closing plate; 21. a communication port; 22. an expansion slot; 3. a flow-through tray; 31. a flow-through hole; 32. a guide hole; 321. a lubrication groove; 33. a guide bar; 34. an oil baffle plate; 341. an oil-resistant rubber ring; 35. a bellows; 4. plugging a plug; 41. a ring groove; 42. an O-shaped rubber ring; 5. a spring; 6. a valve tube; 7. a connecting spring; 8. a valve core; 81. a flow port; 82. a flow-through chamber; 9. and a fixed end.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Referring to fig. 7, the check valve in the related art generally includes several important components, such as a valve tube 6, a valve core 8, and a fixing end 9, wherein a communication hole is formed in the valve tube 6, a connecting spring 7 is arranged on the fixing end 9, and the end of the valve core 8 is pressed against the hole wall of the communication hole by the spring. The side wall of the valve core 8 is provided with a through hole and the inside of the valve core 8 is provided with a through cavity 82, when the valve core 8 is opened by water pressure extrusion, fluid flows in from the through hole 81 on the side wall of the valve core 8 and passes through the one-way valve through the through cavity 82, but because the valve core 8 is contacted with the inner wall of the valve pipe 6, stable guiding is carried out on the valve core 8 through the inner wall of the valve pipe 6, friction is generated with the inner wall of the valve pipe 6 in the movement process of the valve core 8, and the sensitivity of the one-way valve to the water pressure from the direction of the through hole is relatively weak. Meanwhile, when the fluid passes through the flow port 81 and the flow chamber 82, the flow path of the fluid changes at a large angle, and turbulence is easily generated to cause resistance, which results in pressure loss.

The embodiment of the application discloses general type check valve.

Example 1

Referring to fig. 1 and 2, the universal check valve comprises a valve body 1, wherein a closing plate 2 is arranged in the valve body 1, and a communication port 21 is formed in the closing plate 2. The valve body 1 is internally provided with a circulation disc 3 at one side of the communication port 21, the circulation disc 3 is provided with a guide hole 32 and a plurality of circulation holes 31, the guide hole 32 and the circulation disc 3 are coaxially arranged, the axis of each circulation hole 31 is parallel to the axis of the circulation disc 3, and the circulation holes 31 are uniformly distributed in the circumferential direction of the guide hole 32 in an annular array mode. A guide rod 33 slides in the guide hole 32, a blocking head 4 is fixedly arranged at one end of the guide rod facing the communication opening 21, a spring 5 is sleeved on the guide rod 33, one end of the spring 5 is fixedly connected with the blocking head 4, and the other end of the spring is fixedly connected with the side wall of the circulation disc 3. The plugging head 4 is in a truncated cone shape, and one end with a smaller area is arranged towards the communication opening 21. Under the urging of the spring 5, the side wall of the plugging head 4 abuts against the mouth wall of the communication port 21, thereby closing the communication port 21.

Referring to fig. 1, a limiting boss 11 is arranged on one side, close to the communication port 21, of the circulation disc 3 on the inner wall of the valve body 1, and the side wall, close to the communication port 21, of the circulation disc 3 abuts against the limiting boss 11. An annular clamping groove 12 is formed in one side, far away from the communication opening 21, of the flow disc 3 on the inner wall of the valve body 1, and a clamping spring 121 is arranged in the annular clamping groove 12. During the installation, the staff at first assembles sealing head 4, guide bar 33, spring 5 and circulation dish 3 respectively, then puts into valve body 1 with circulation dish 3 to push away circulation dish 3 along 1 inner walls of valve body to the position of contradicting with spacing boss 11. Then the staff puts into annular screens groove 12 with jump ring 121 through long handle tweezers, contradicts in circulation dish 3 lateral wall respectively from both sides through jump ring 121 and spacing boss 11 to restrict circulation dish 3's position.

The implementation principle of the embodiment 1 is as follows: the movement of the blocking head 4 is guided by the matching of the flow-through disc 3 and the guide rod 33, the blocking head 4 does not contact with the inner wall of the valve body 1 to generate friction, the resistance of the movement of the blocking head 4 is reduced, and therefore the sensitivity of the one-way valve to the pressure induction of fluid from the direction of the communication port 21 is improved. Meanwhile, due to the uniform distribution of the circulation holes 31 on the circulation disc 3, the possibility of generating turbulence when the fluid passes through is reduced, and the pressure loss is reduced.

Example 2

Referring to fig. 3 and 4, the present embodiment is different from embodiment 1 in that the communication port 21 is formed in a trumpet shape, and the side of the communication port 21 having a larger diameter faces the flow-through plate 3. The communicating opening 21 is provided with an expansion groove 22 at the opening wall on one side facing the communicating disc, the expansion groove 22 is trumpet-shaped, and the inclination angle of the groove wall is larger than that of the opening wall of the communicating opening 21.

Referring to fig. 3 and 4, a ring groove 41 is formed on a circumferential side wall of the plugging head 4, and an O-shaped rubber ring 42 is disposed in the ring groove 41.

The implementation principle of the embodiment 2 is as follows: when the sealing head 4 seals the communication opening 21 under the pushing of the spring 5, the O-shaped rubber ring 42 is abutted against the horn-shaped side wall of the communication opening 21, the sealing performance of the closed check valve is improved, meanwhile, the friction generated between the opening wall of the communication opening 21 and the side wall of the sealing head 4 is reduced in the mode of flexible connection of the O-shaped rubber ring 42, and the possibility that impurities in fluid are retained at the side wall of the communication opening 21 to cause the movement clamping stagnation of the sealing head 4 is also reduced. The expansion groove 22 increases the flow area of the fluid when the plugging head 4 is separated from the communication port 21, and reduces the pressure loss.

Example 3

Referring to fig. 5 and 6, the present embodiment is different from embodiment 2 in that a plurality of annular lubrication grooves 321 are formed in the side wall of the guide hole 32. The lubricating grooves 321 are distributed along the axial direction of the guide hole 32, and lubricating grease is arranged in the lubricating grooves 321.

Referring to fig. 5 and 6, an annular oil baffle plate 34 is provided at both ends of the guide hole 32 on the flow-through disc 3, and the oil baffle plate 34 is abutted against the circumferential side wall of the guide rod 33. The equal fixedly connected with of one end that two oil baffle 34 kept away from each other hinders oil rubber ring 341, hinders oil rubber ring 341 and contradicts with the circumference lateral wall of guide bar 33. By the arrangement of the oil baffle plate 34 and the oil blocking rubber ring 341, the possibility that the lubricating grease leaks from the guide hole 32 to cause the reduction of the lubricating effect is reduced.

Referring to fig. 5 and 6, one end of the guide rod 33, which is far away from the plugging head 4, extends out of the guide hole 32, and a telescopic bellows 35 is fixedly arranged between two end positions of the guide rod 33 and the side wall of the adjacent flow tray 3, and the telescopic bellows 35 of the guide rod 33, which is located at the plugging head 4, is fixedly connected with the plugging head 4. The end of the guide rod 33 far away from the plugging head 4 is provided with a mounting plate, and the end of the guide rod 33 far away from the plugging head 4 is fixedly connected with a concentrated corrugated pipe 35 and the mounting plate. The guide rod 33 is isolated from the fluid by the bellows 35, reducing the possibility of contamination of the fluid due to mixing of grease on the guide rod 33 with the fluid.

Example 3 the example principle is: when the guide rod 33 moves, the lubricating grease is coated on the circumferential side wall of the guide rod 33 and acts between the guide rod 33 and the hole wall of the guide hole 32 to play a lubricating role, and the movement resistance of the blocking head 4 is further reduced.

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 general type check valve, includes valve body (1), its characterized in that: be equipped with closing plate (2) in valve body (1), intercommunication mouth (21) have been seted up on closing plate (2), it is provided with circulation dish (3) to lie in intercommunication mouth (21) one side in valve body (1), circulation hole (31) have been seted up on circulation dish (3), seted up on circulation dish (3) with the coaxial guiding hole (32) of circulation dish (3), it has guide bar (33) to slide in guiding hole (32), guide bar (33) are equipped with shutoff head (4) towards the one end of intercommunication mouth (21), be equipped with spring (5) between shutoff head (4) and circulation dish (3), shutoff head (4) support under the extrusion of spring (5) the mouth wall and the closed intercommunication mouth (21) of intercommunication mouth (21).

2. A one-way valve of the universal type as claimed in claim 1, wherein: be equipped with spacing boss (11) on valve body (1) inner wall, circulation dish (3) are close to the lateral wall and spacing boss (11) conflict of intercommunication mouth (21) one side, lie in circulation dish (3) on valve body (1) inner wall and keep away from one side of intercommunication mouth (21) and seted up annular screens groove (12), be equipped with jump ring (121) in annular screens groove (12), one side lateral wall and jump ring (121) conflict that spacing boss (11) were kept away from in circulation dish (3).

3. A one-way valve of the universal type as claimed in claim 2, wherein: the circulation holes (31) on the circulation disc (3) are distributed in an annular array along the circumferential direction of the guide holes (32).

4. A one-way valve of the universal type as claimed in claim 1, wherein: the sealing plug (4) is in a shape of a circular truncated cone and is arranged towards the communication port (21) at one end with a smaller area, an annular groove (41) is formed in the circumferential side wall of the sealing plug (4), and an O-shaped rubber ring (42) is arranged in the annular groove (41).

5. A one-way valve of the universal type as claimed in claim 4, wherein: the connecting opening (21) is arranged to be horn-shaped and the opening with the larger caliber faces the plugging head (4), the opening wall of the connecting opening (21) faces one end of the plugging head (4) and is provided with an expansion groove (22), and the expansion groove (22) is horn-shaped and the inclination angle of the groove wall is larger than that of the groove wall of the connecting opening (21).

6. A one-way valve of the universal type as claimed in claim 1, wherein: a plurality of lubricating grooves (321) are formed in the hole wall of the guide hole (32), and the lubricating grooves (321) are annularly arranged around the guide rod (33).

7. A one-way valve of the universal type as claimed in claim 6, wherein: all be equipped with annular oil baffle (34) on guiding hole (32) both ends pore wall, oil baffle (34) contradict with the circumference lateral wall of guide bar (33), two one side that oil baffle (34) kept away from each other is equipped with respectively and hinders oil rubber ring (341).

8. A one-way valve of the universal type as claimed in claim 7, wherein: all set firmly bellows (35) between the lateral wall at guide bar (33) both ends and the circulation dish (3) lateral wall that closes on, the lateral wall fixed connection who lies in guiding hole (32) orifice department on bellows (35) and circulation dish (3).