CN220930269U

CN220930269U - Spring check valve

Info

Publication number: CN220930269U
Application number: CN202322816066.5U
Authority: CN
Inventors: 曾德显
Original assignee: Zhejiang Hiron Machinery Co ltd
Current assignee: Zhejiang Hiron Machinery Co ltd
Priority date: 2023-10-20
Filing date: 2023-10-20
Publication date: 2024-05-10
Anticipated expiration: 2033-10-20

Abstract

The utility model provides a spring check valve, and belongs to the technical field of valves. It has solved the unable problem of adjusting spring force of current check valve. The spring check valve comprises a tubular valve body, wherein the front end and the rear end of the valve body are respectively provided with a water inlet end and a water outlet end, a water inlet pipe is coaxially arranged in the water inlet end, a sealing plate and a spring which enables the sealing plate to have the trend of sealing the rear port of the water inlet pipe are arranged in the valve body, a connecting seat which is annular and coaxial with the water inlet pipe is formed on the outer wall of the front end of the water inlet pipe, and the axial section of the connecting seat is L-shaped; the connecting seat comprises an outer ring and an inner ring arranged between the outer ring and the water inlet pipe, wherein the outer ring is sleeved outside the water inlet end and is connected with the water inlet end through threads. The spring check valve is convenient for adjusting the spring force.

Description

Spring check valve

Technical Field

The utility model belongs to the technical field of valves, and relates to a one-way valve, in particular to a spring one-way valve.

Background

The check valve is used for preventing the reverse flow of oil flow in a hydraulic system or compressed air in a pneumatic system, wherein the fluid can only flow along the water inlet, but the water outlet medium cannot flow back.

The spring type one-way valve is a one-way valve, the structure of the spring type one-way valve is as disclosed in China patent library (application number: 202021346600.0), the spring type one-way valve comprises a valve body, connecting cavities are arranged at the left end and the right end of the valve body, an arc-shaped hole, a radial hole and an axial hole which are communicated are sequentially formed between the two connecting cavities from left to right, and a baffle is arranged at the right end of the axial hole; a through hole is formed in the center of the side wall of the partition board, a spring is connected to the left side wall of the partition board along the outer side of the through hole, and a valve core ball is connected to the free end of the spring; the connecting device is characterized in that connecting rings are arranged on the outer side walls of the two ends of the valve body, two ends of the valve body are detachably connected with guide pipes, the end parts of the guide pipes are communicated with connecting pipes through connecting cylinders, spiral cylinders which are spirally connected with the outer side walls of the connecting cylinders are sleeved on the end parts of the valve body, and pressing rings are fixed on the end parts of the spiral cylinders.

In the one-way valve, the supporting force of the spring on the valve core ball is fixed and cannot be adjusted. When in actual use, if the supporting force of the spring to the valve core ball is too large, the water flow pressure can be weakened, so that the water outlet amount is reduced, and the normal use is influenced.

Disclosure of utility model

The utility model aims to solve the problems in the prior art and provides a spring check valve which is convenient for adjusting the spring force.

The aim of the utility model can be achieved by the following technical scheme: the spring check valve comprises a tubular valve body, wherein a water inlet end and a water outlet end are respectively arranged at the front end and the rear end of the valve body, a water inlet pipe is coaxially arranged in the water inlet end, a sealing plate and a spring which enables the sealing plate to have the trend of sealing the rear port of the water inlet pipe are arranged in the valve body, and the spring check valve is characterized in that a connecting seat which is annular and coaxial with the water inlet pipe is formed on the outer wall of the front end of the water inlet pipe, and the axial section of the connecting seat is L-shaped; the connecting seat comprises an outer ring and an inner ring arranged between the outer ring and the water inlet pipe, wherein the outer ring is sleeved outside the water inlet end and is connected with the water inlet end through threads.

The inlet tube utilizes the connecting seat spiro union outside the end of intaking, just so can make the inlet tube follow valve body axial slip through rotating the outer ring, adjusts the flexible volume of spring to satisfy different operating modes, have advantages such as convenient to use, practicality are good.

In the spring check valve, the outer wall of the water inlet end is provided with an annular groove, an o-shaped ring is arranged in the annular groove, and the outer peripheral surface of the o-shaped ring is in contact seal with the inner wall of the outer ring.

In the spring check valve, an annular positioning groove is formed in the outer wall of the rear end of the water inlet pipe, a sealing ring is arranged in the positioning groove, and the outer side wall of the sealing ring is in contact sealing with the inner wall of the valve body.

The o-shaped ring is matched with the sealing ring, so that a sealing path formed between the water inlet pipe and the valve body can be effectively prolonged, the leakage risk is reduced, and the operation reliability of the check valve is improved.

In the spring check valve, a circle of threaded holes axially penetrate through the inner ring. In actual assembly, the water inlet pipeline is provided with an annular flange matched with the threaded hole, so that the installation of the one-way valve is facilitated.

In the spring check valve, an annular mounting groove is formed in the front end face of the inner ring, and the mounting groove is coaxial with the water inlet pipe; the threaded holes are formed in the bottom wall of the mounting groove, annular sealing gaskets are arranged in the mounting groove, through holes are axially formed in the annular sealing gaskets, and the number of the through holes and the number of the threaded holes are the same and the positions of the through holes and the threaded holes correspond to each other one by one. During installation, the annular flange of the water inlet pipeline is pressed on the annular sealing gasket, and the annular flange is fixedly connected with the water inlet pipe through a screw penetrating through the through hole and screwed into the threaded hole, so that the check valve is further convenient to assemble.

In the spring check valve, the inner wall of the water inlet pipe at the front port is a conical guide-in surface, and the diameter of the guide-in surface gradually becomes smaller from front to back, so that fluid of the water inlet pipeline is smoothly discharged into the water inlet pipe.

In the spring check valve, an annular shoulder is formed on the inner wall of the valve body, two ends of the spring respectively act on the sealing plate and the annular shoulder, and under the action of the spring, the front side surface of the sealing plate can be pressed on the rear end surface of the water inlet pipe to seal the rear port of the water inlet pipe. By adopting the design, the device has the advantages of simple structure, convenient installation and the like.

In the spring check valve, the front end face of the annular shoulder is provided with the guide ring matched with the spring, and the rear end of the spring is sleeved outside the guide ring. The guide ring is arranged, so that the check valve can stably operate by being used for positioning the spring and guiding the spring in a telescopic manner.

In the spring check valve, the annular shoulder is axially penetrated with a circle of water passing holes, and the water passing holes are positioned at the outer side of the guide ring, so that the flow speed is accelerated, the fluid is prevented from being jammed in the valve body, and the stable operation of the check valve is further ensured.

In the spring check valve, the water inlet pipe and the connecting seat are of an integrated structure and are formed in an injection molding mode, so that the stability and the strength of the overall structure of the water inlet pipe are effectively enhanced.

Compared with the prior art, the spring check valve has the following advantages:

1. The inlet tube utilizes the connecting seat spiro union outside the end of intaking, just so can make the inlet tube follow valve body axial slip through rotating the outer ring, adjusts the flexible volume of spring to satisfy different operating modes, have advantages such as convenient to use, practicality are good.

2. The o-shaped ring is matched with the sealing ring, so that a sealing path formed between the water inlet pipe and the valve body can be effectively prolonged, the leakage risk is reduced, and the operation reliability of the check valve is improved.

Drawings

Fig. 1 is a schematic structural view of the present spring check valve.

Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.

Fig. 3 is a schematic structural view of the water inlet pipe.

In the figure, 1, a valve body; 1a, a water inlet end; 1b, a water outlet end; 1c, an annular shoulder; 1d, a guide ring; 1e, water passing holes; 2. a water inlet pipe; 2a, a connecting seat; 2a1, an outer ring; 2a2, an inner ring; 2a3, a threaded hole; 2b, an introduction surface; 3. a sealing plate; 3a, a plate body; 3b, rubber pads; 4. a spring; 5. an o-ring; 6. a seal ring; 7. an annular gasket; 7a, through holes.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the spring check valve comprises a valve body 1 in a straight pipe shape, and the front end and the rear end of the valve body 1 are respectively a water inlet end 1a and a water outlet end 1b.

Wherein,

The water inlet end 1a is coaxially provided with a water inlet pipe 2, and the valve body 1 is internally provided with a sealing plate 3 and a spring 4 which enables the sealing plate 3 to have the trend of closing the rear port of the water inlet pipe 2. As shown in fig. 1 and 3, a connection seat 2a which is annular and coaxial with the water inlet pipe 2 is formed on the outer wall of the front end of the water inlet pipe 2, and the axial section of the connection seat 2a is L-shaped. The connection seat 2a consists of an outer ring 2a1 and an inner ring 2a2 between the outer ring 2a1 and the water inlet pipe 2, i.e. the inner ring 2a2 and the outer ring 2a1 are arranged vertically and the inner ring 2a2 connects the outer ring 2a1 and the water inlet pipe 2. Wherein, outer loop 2a1 cover is established outside water inlet end 1a and both pass through threaded connection. The water inlet pipe 2 utilizes the connecting seat 2a spiro union outside the water inlet end 1a, just so through rotating outer ring 2a1 alright make water inlet pipe 2 follow valve body 1 axial slip, adjust the flexible volume of spring 4 to satisfy different operating modes, have advantages such as convenient to use, practicality are good.

Further describing, the outer wall of the water inlet end 1a is provided with an annular groove, an o-shaped ring 5 is arranged in the annular groove, and the outer peripheral surface of the o-shaped ring 5 is in contact sealing with the inner wall of the outer ring 2a 1. An annular positioning groove is formed in the outer wall of the rear end of the water inlet pipe 2, a sealing ring 6 is arranged in the positioning groove, and the outer side wall of the sealing ring 6 is in contact sealing with the inner wall of the valve body 1. The o-shaped ring 5 is matched with the sealing ring 6, so that a sealing path formed between the water inlet pipe 2 and the valve body 1 can be effectively prolonged, the leakage risk is reduced, and the running reliability of the check valve is improved.

In the present embodiment of the present invention, in the present embodiment,

The spring 4 is mounted as follows: an annular shoulder 1c is integrally formed on the inner wall of the rear end of the valve body 1, and the annular shoulder 1c is coaxial with the valve body 1. The two ends of the spring 4 act on the sealing plate 3 and the annular shoulder 1c respectively, and under the action of the spring 4, the front side surface of the sealing plate 3 can press on the rear end surface of the water inlet pipe 2 to seal the rear end port of the water inlet pipe 2. By adopting the design, the device has the advantages of simple structure, convenient installation and the like. Further, a guide ring 1d matched with the spring 4 is formed on the front end surface of the annular shoulder 1c, and the rear end of the spring 4 is sleeved outside the guide ring 1 d. The guide ring 1d is arranged, and is used for positioning the spring 4 and guiding the spring 4 in a telescopic way, so that the one-way valve stably operates.

In an actual product, a circle of water passing holes 1e axially penetrate through the annular shoulder 1c, and the water passing holes 1e are positioned on the outer side of the guide ring 1d, so that the flow speed is increased, the fluid is prevented from being jammed in the valve body 1, and the stable operation of the one-way valve is further ensured.

The seal plate 3 has the following structure: comprising a plate body 3a and a rubber pad 3b which is abutted against and fixed on the front side of the plate body 3a, wherein the front end of a spring 4 acts on the plate body 3 a; the sealing plate 3 is pressed against the rear end surface of the water inlet pipe 2 by a rubber pad 3b to close the rear port of the water inlet pipe 2.

In order to facilitate the connection of the check valve with the water inlet pipe 2, as shown in fig. 2 and 3, the application also has a circle of threaded holes 2a3 axially penetrating the inner ring 2a 2. In actual assembly, the water inlet pipe 2 is provided with an annular flange matched with the threaded hole 2a3, so that the installation of the one-way valve is facilitated. Further, an annular mounting groove is formed in the front end face of the inner ring 2a2, and the mounting groove is coaxial with the water inlet pipe 2; the threaded holes 2a3 are formed in the bottom wall of the mounting groove, an annular sealing gasket 7 is arranged in the mounting groove, through holes 7a are axially formed in the annular sealing gasket 7, and the through holes 7a and the threaded holes 2a3 are identical in number and correspond to each other in position one by one. During installation, the annular flange of the water inlet pipe 2 pipeline is pressed on the annular sealing gasket 7, and the annular flange is fixedly connected with the water inlet pipe 2 through a screw penetrating through the through hole 7a and screwed into the threaded hole 2a3, so that the one-way valve is further convenient to assemble.

Of these, it is preferable that the hole diameter of the through hole 7a is larger than the hole diameter of the screw hole 2a3, and the front end of the annular packing 7 protrudes out of the mounting groove.

Further, the inner wall of the water inlet pipe 2 at the front port is a conical guide surface 2b, and the diameter of the guide surface 2b gradually decreases from front to back, so that the fluid in the water inlet pipe 2 is smoothly discharged into the water inlet pipe 2.

In actual products, the water inlet pipe 2 and the connecting seat 2a are of an integrated structure and are formed in an injection molding mode, so that the stability and the strength of the whole structure of the water inlet pipe 2 are effectively enhanced.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a spring check valve, includes and is tubular valve body (1), and both ends are inlet end (1 a) and play water end (1 b) respectively around valve body (1), are equipped with inlet tube (2) in the inlet end (1 a) coaxial, are equipped with closing plate (3) and make closing plate (3) have spring (4) of sealing inlet tube (2) back port trend in valve body (1), characterized in that, the front end outer wall of inlet tube (2) is formed with on the outer wall of the front end and is annular and with inlet tube (2) coaxial connecting seat (2 a), and the axial cross-section of connecting seat (2 a) is L shape; the connecting seat (2 a) consists of an outer ring (2 a 1) and an inner ring (2 a 2) arranged between the outer ring (2 a 1) and the water inlet pipe (2), wherein the outer ring (2 a 1) is sleeved outside the water inlet end (1 a) and is connected with the water inlet end through threads.

2. The spring check valve according to claim 1, wherein an annular groove is formed in the outer wall of the water inlet end (1 a), an o-shaped ring (5) is arranged in the annular groove, and the outer peripheral surface of the o-shaped ring (5) is in contact sealing with the inner wall of the outer ring (2 a 1).

3. The spring check valve according to claim 2, wherein a ring-shaped positioning groove is formed in the outer wall of the rear end of the water inlet pipe (2), a sealing ring (6) is arranged in the positioning groove, and the outer side wall of the sealing ring (6) is in contact sealing with the inner wall of the valve body (1).

4. A spring check valve according to claim 2 or 3, characterized in that the inner ring (2 a 2) is axially perforated with a ring of threaded holes (2 a 3).

5. The spring check valve according to claim 4, characterized in that the front end surface of the inner ring (2 a 2) is provided with a ring-shaped mounting groove, and the mounting groove is coaxial with the water inlet pipe (2); the threaded holes (2 a 3) are formed in the bottom wall of the mounting groove, annular sealing gaskets (7) are arranged in the mounting groove, through holes (7 a) are axially formed in the annular sealing gaskets (7), and the through holes (7 a) and the threaded holes (2 a 3) are identical in number and correspond to each other in position one by one.

6. A spring check valve according to claim 5, characterized in that the inner wall of the inlet pipe (2) at the front port is a conical lead-in surface (2 b), and that the diameter of the lead-in surface (2 b) tapers from front to back.

7. The spring check valve according to claim 1, wherein an annular shoulder (1 c) is formed on the inner wall of the valve body (1), two ends of the spring (4) respectively act on the sealing plate (3) and the annular shoulder (1 c), and under the action of the spring (4), the front side surface of the sealing plate (3) can be pressed on the rear end surface of the water inlet pipe (2) to seal the rear port of the water inlet pipe (2).

8. The spring check valve according to claim 7, wherein a guide ring (1 d) matched with the spring (4) is formed on the front end face of the annular shoulder (1 c), and the rear end of the spring (4) is sleeved outside the guide ring (1 d).

9. Spring check valve according to claim 8, characterized in that the annular shoulder (1 c) is axially perforated with a ring of water passing holes (1 e), and that the water passing holes (1 e) are located outside the guide ring (1 d).

10. A spring check valve according to claim 1, characterized in that the inlet pipe (2) and the connection seat (2 a) are of one-piece construction and are formed by injection moulding.