CN216479091U

CN216479091U - Reverse flow-resisting one-way valve with overvoltage protection function

Info

Publication number: CN216479091U
Application number: CN202122309025.8U
Authority: CN
Inventors: 王建平
Original assignee: Ningbo Hongte Industry & Trade Co ltd
Current assignee: Ningbo Hongte Industry & Trade Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-05-10
Anticipated expiration: 2031-09-22

Abstract

The utility model relates to the technical field of fluid control, in particular to a reverse flow-resisting one-way valve with an overpressure protection function. This application is connected through water inlet and water pipe or other devices and lets in rivers, when the water pressure is normal, the elasticity of first spring can be overcome to water pressure, make the case pushed away and let in rivers, when the circumstances such as play water end jam, water pressure can the grow, at this moment fixed connecting rod will break away from the stationary state for water pressure is too high, make the clamping ring not compressing tightly the second spring, because the elasticity of second spring is greater than first spring, so the second spring can promote clamping ring and case, make the case reset and prevent rivers and continue to let in, prevent phenomenons such as backward flow, how to make the technical problem who closes at the high pressure in-process solved.

Description

Reverse flow-resisting one-way valve with overvoltage protection function

Technical Field

The utility model relates to the technical field of fluid control, in particular to a reverse flow-resisting one-way valve with an overpressure protection function.

Background

The check valve is commonly called as a check valve, fluid can only flow along the water inlet, and the medium at the water outlet cannot flow back. The check valve is used for preventing reverse flow of oil flow in a hydraulic system or for preventing reverse flow of compressed air in a pneumatic system. The one-way valve has a straight-through type and a right-angle type. The straight-through one-way valve is installed on the pipeline by threaded connection.

The existing check valve, for example, the check valve disclosed in patent No. CN201620748362.3, is easy to detach and can make the fluid flow in one direction, but if the water outlet of the check valve is unable to circulate, the water flow will start to flow back, which may result in the burst of the valve in the water pipe, thus greatly increasing the potential safety hazard.

Therefore, a reverse flow-resisting check valve with an overpressure protection function is needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, a reverse flow-resisting one-way valve with an overvoltage protection function is provided.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:

a reverse flow-resisting one-way valve with an overvoltage protection function comprises a shell, an inner core and a first spring, wherein a water inlet end and a water outlet end are arranged on the shell; the inner core is arranged inside the shell; the first spring is arranged in the shell, two ends of the first spring are respectively connected with the inner core and the shell, and the inner core has a tendency of moving towards the water inlet end; the water outlet end is also provided with an overvoltage protection mechanism, the overvoltage protection mechanism comprises a second spring, a pressure ring and a fixed connecting rod, and the second spring is arranged at the water outlet end of the shell; the pressing ring is arranged on the shell in a penetrating mode, is arranged on one side of the water inlet end and is connected with the second spring; the fixed connecting rod is movably arranged on the pressure ring.

Preferably, the inner core is inside hollow structure, and the shell is close to the end of intaking and is provided with the bell mouth, and the inner core front end is provided with the mortgage piece that corresponds with the bell mouth, is provided with the through-hole on the mortgage piece.

Preferably, the overvoltage protection mechanism further comprises a first cavity, a first piston, a support frame and a third spring, the first cavity is arranged inside the shell, the first piston is arranged on the shell in a penetrating mode, the bottom end of the first piston is located inside the first cavity, the first piston is further located on one side of the compression ring and connected with the fixed connecting rod, the support frame wraps the first piston and is arranged on the shell, and the third spring is arranged on the top end of the first piston and connected with the support frame.

Preferably, the bottom end of the first piston is of a circular truncated cone structure with a small bottom end and a large top end.

Preferably, the two ends of the fixed connecting rod are respectively provided with a first bolt and a second bolt, the first piston is provided with a first slot corresponding to the movably connected first slot, and the pressing ring is provided with a second slot corresponding to the second bolt.

Preferably, a sliding groove is further formed in one end, close to the water outlet, of the supporting frame, a sliding block corresponding to the sliding groove is arranged on the pressing ring, a guide sleeve is further arranged on the supporting frame, and a guide sleeve corresponding to the first piston is arranged on the first piston.

Compared with the prior art, the application has the beneficial effects that:

1. this application is connected through water inlet and water pipe or other devices and lets in rivers, when the water pressure is normal, the elasticity of first spring can be overcome to water pressure, make the case pushed away and let in rivers, when the circumstances such as play water end jam, water pressure can the grow, at this moment fixed connecting rod will break away from the stationary state for water pressure is too high, make the clamping ring not compressing tightly the second spring, because the elasticity of second spring is greater than first spring, so the second spring can promote clamping ring and case, make the case reset and prevent rivers and continue to let in, prevent phenomenons such as backward flow, how to make the technical problem who closes at the high pressure in-process solved.

2. This application overcomes the elasticity of first spring through water pressure, makes the case pushed open and lets in rivers, makes rivers flow from the delivery port, when letting in rivers from the delivery port, because first spring can promote the mortgage piece and the bell clings prevents that rivers from getting into, and the rivers direction will be extremely with first spring elasticity direction, can only make the mortgage fast like this and hug closely more with the bell and be difficult to transmit rivers, has solved how to make uniflow's technical problem.

3. This application lets in inside first cavity through rivers, if the delivery port blocks, water pressure can crescent, make the inside water pressure increase of first cavity, increase when saying when being greater than the elasticity of third spring when water pressure, first piston will be pushed away, thereby can drive the clamping ring through fixed connecting rod and remove, because the elasticity of third spring is less than the second spring, so after fixed connecting rod drives the clamping ring and removes, the second spring breaks away from the compression state, make it promote the valve core and reset, prevent rivers reentrant, need artifical pulling clamping ring to make it reset if need reuse, how to make overvoltage protection mechanism can detect the pressure condition and close the technical problem of valve has been solved.

4. This application makes rivers can make first piston receive the bottom and receive an ascending power through first piston bottom for the big round platform structure in the little top in bottom to make first piston promoted, solved how to make first piston be convenient for the technical problem that the atress removed.

5. This application makes fixed pull rod and clamping ring and first piston swing joint through first spout, second spout and first slot, second slot, prevents because unable rotation, has solved how to make fixed connecting rod respectively with clamping ring and first piston swing joint's technical problem.

6. This application prevents through guide pillar and rather than the guide pin bushing that corresponds that first piston from rotating and making it drive fixed pull rod and rotate and lead to its fracture, thereby rethread spout prevents to rotate when the clamping ring is promoted by the second spring and leads to fixed pull rod to rotate and lead to the fracture, has solved how to prevent that clamping ring or first piston from rotating and lead to the cracked technical problem of connecting rod.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a top view of the present invention;

fig. 3 is a partial enlarged view at a of fig. 2;

FIG. 4 is a front view of the present invention;

FIG. 5 is a cross-sectional view at section B-B of FIG. 4;

fig. 6 is a partial enlarged view at C of fig. 5;

the reference numbers in the figures are:

1-a housing; 1 a-water inlet end; 1 b-water outlet end; 1 c-a chute;

2-inner core; 2 a-a mortgage block; 2a 1-vias;

3-a first spring;

4-an overvoltage protection mechanism; 4 a-a second spring; 4 b-a pressure ring; 4b 1-second slot; 4 c-a fixed link; 4 d-a first cavity; 4 e-a first piston; 4e1 — first slot; 4e 2-guide posts; 4 f-a support frame; 4f 1-guide sleeve; 4 g-third spring.

Detailed Description

The following description is presented to disclose the utility model so as to enable any person skilled in the art to practice the utility model. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

In order to solve the technical problem of how to close the valve during the strong pressure process, as shown in fig. 1 to 6, the following preferred technical solutions are provided:

a reverse flow-resisting one-way valve with an overvoltage protection function comprises a shell 1, an inner core 2 and a first spring 3, wherein a water inlet end 1a and a water outlet end 1b are arranged on the shell 1; the inner core 2 is arranged inside the shell 1; the first spring 3 is arranged in the shell 1, two ends of the first spring 3 are respectively connected with the inner core 2 and the shell 1, and the inner core 2 tends to move towards the water inlet end 1a by the first spring 3; the water outlet end 1b is also provided with an overvoltage protection mechanism 4, the overvoltage protection mechanism 4 comprises a second spring 4a, a pressing ring 4b and a fixed connecting rod 4c, and the second spring 4a is arranged at the water outlet end 1b of the shell 1; the pressing ring 4b penetrates through the shell 1, and the pressing ring 4b is arranged on one side of the water inlet end 1a and is connected with the second spring 4 a; the fixed connecting rod 4c is movably arranged on the press ring 4 b.

Specifically, it should be noted that the elastic force of the first spring 3 is much smaller than the elastic force of the second spring 4a, and the pressing ring 4b presses the second spring 4a all the time in a normal state, when the water pressure is normal, the water pressure overcomes the elastic force of the first spring 3, so that the valve core is pushed open to let in water flow, when the water outlet end 1b is blocked, the water pressure becomes large, at this time, the fixed connecting rod 4c should be in a state that the water pressure is too high to separate from the fixed state, so that the pressing ring 4b is not pressing the second spring 4a, because the elastic force of the second spring 4a is greater than the first spring 3, the second spring 4a can push the pressing ring 4b and the valve core, so that the valve core resets to prevent the water flow from continuing to let in, and the phenomenon of backflow is prevented.

In order to solve the technical problem of how to make the unidirectional flow, as shown in fig. 5, the following preferred technical solutions are provided:

inner core 2 is inside hollow structure, and shell 1 is close to into water end 1a and is provided with the bell mouth, and inner core 2 front end is provided with the mortgage piece 2a that corresponds with the bell mouth, is provided with through-hole 2a1 on the mortgage piece 2 a.

Specifically, when letting in rivers from the water inlet, water pressure can overcome first spring 3's elasticity, makes the case pushed open and lets in rivers, and rivers pass through-hole 2a1 and flow from inner core 2 inside immediately, makes rivers flow from the delivery port, when letting in rivers from the delivery port, because first spring 3 can promote the piece 2a of mortgage and the bell mouth of tapering shape is close to prevent that rivers from getting into, and the rivers direction will arrive with first spring 3 elasticity direction one, can only make the mortgage more hug closely with the bell mouth like this and be difficult to transmit rivers.

In order to solve the technical problem of how to enable the overpressure protection mechanism to detect a pressure condition and close the valve, as shown in fig. 2, 3 and 5, the following preferred solutions are provided:

the overvoltage protection mechanism 4 further comprises a first cavity 4d, a first piston 4e, a supporting frame 4f and a third spring 4g, the first cavity 4d is arranged inside the shell 1, the first piston 4e is arranged on the shell 1 in a penetrating mode, the bottom end of the first piston 4e is arranged inside the first cavity 4d, the first piston 4e is further arranged on one side of the pressing ring 4b and connected with the fixed connecting rod 4c, the supporting frame 4f wraps the first piston 4e and is arranged on the shell 1, and the third spring 4g is arranged on the top end of the first piston 4e and connected with the supporting frame 4 f.

Specifically, it should be noted that the elastic force of the third spring 4g is smaller than that of the second spring 4a, the support frame 4f can be connected with the outside air, when the inner core 2 is squeezed open by water flow, the water flow can enter the first cavity 4d, if the water outlet is blocked, the water pressure can be gradually increased, so that the water pressure inside the first cavity 4d is increased, when the water pressure increase path is larger than that of the third spring 4g, the first piston 4e is pushed away, so that the pressing ring 4b can be driven to move by the fixed connecting rod 4c, because the elastic force of the third spring 4g is smaller than that of the second spring 4a, after the pressing ring 4b is driven to move by the fixed connecting rod 4c, the second spring 4a is separated from the pressing state, so that the pressing ring can push the valve core to reset, the water flow is prevented from entering again, and if the pressing ring 4b needs to be manually pulled again to reset.

In order to solve the technical problem of how to facilitate the forced movement of the first piston, as shown in fig. 5, the following preferred technical solutions are provided:

the bottom end of the first piston 4e is a round table structure with a small bottom end and a large top end.

Specifically, when rivers enter into first cavity, make rivers receive an ascending power in the bottom through first piston 4e bottom for the big round platform structure in the little top in bottom makes first piston 4e receive the bottom when water pressure increases to make first piston 4e promoted.

In order to solve the technical problem of how to movably connect the fixed connecting rod with the pressing ring and the first piston respectively, as shown in fig. 5, the following preferred technical solutions are provided:

the two ends of the fixed connecting rod 4c are respectively provided with a first bolt and a second bolt, the first piston 4e is provided with a first slot 4e1 corresponding to the movably connected first slot 4e1, and the press ring 4b is provided with a second slot 4b1 corresponding to the second bolt.

Specifically, when the first piston 4e ascends, the connecting rod is driven to ascend, but because the first piston 4e moves upwards, the press ring 4b moves transversely, so that two ends of the connecting rod inevitably move when the first piston 4e moves, the press ring 4b and the first piston 4e are connected through the first slide groove 1c, the second slide groove 1c, the first slot 4e1 and the second slot 4b1, and the situation that the connecting end is damaged due to incapability of rotating or can be prevented.

In order to solve the technical problem of how to prevent the compression ring or the first piston from rotating to cause the fracture of the connecting rod, as shown in fig. 2, 4, 5 and 6, the following preferred technical solutions are provided:

one end of the shell 1 close to the water outlet is also provided with a sliding groove 1c, the press ring 4b is provided with a sliding block corresponding to the sliding groove 1c, the supporting frame 4f is also provided with a guide sleeve 4f1, and the first piston 4e is provided with a guide sleeve 4f1 corresponding to the first piston.

Specifically, the guide pillar 4e2 and the guide sleeve 4f1 corresponding to the guide pillar prevent the first piston 4e from rotating to drive the fixed pull rod to rotate so as to cause the fixed pull rod to break, and the sliding groove 1c prevents the pressing ring 4b from rotating when pushed by the second spring 4a so as to cause the fixed pull rod to rotate so as to cause the fixed pull rod to break.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the utility model, but various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A reverse flow-resisting one-way valve with an overvoltage protection function comprises a shell (1), an inner core (2) and a first spring (3), wherein a water inlet end (1a) and a water outlet end (1b) are arranged on the shell (1); the inner core (2) is arranged inside the shell (1); the first spring (3) is arranged inside the shell (1), two ends of the first spring (3) are respectively connected with the inner core (2) and the shell (1), and the inner core (2) tends to move towards the water inlet end (1a) due to the first spring (3); the water outlet end (1b) is further provided with an overvoltage protection mechanism (4), the overvoltage protection mechanism (4) comprises a second spring (4a), a pressing ring (4b) and a fixed connecting rod (4c), and the second spring (4a) is arranged at the water outlet end (1b) of the shell (1); the pressing ring (4b) is arranged on the shell (1) in a penetrating mode, and the pressing ring (4b) is arranged on one side close to the water inlet end (1a) and connected with the second spring (4 a); the fixed connecting rod (4c) is movably arranged on the press ring (4 b).

2. The reverse flow-resisting one-way valve with the overpressure protection function according to claim 1 is characterized in that the inner core (2) is of an internal hollow structure, a conical opening is formed in the position, close to the water inlet end (1a), of the shell (1), a mortgage block (2a) corresponding to the conical opening is arranged at the front end of the inner core (2), and a through hole (2a1) is formed in the mortgage block (2 a).

3. The reverse flow-resisting one-way valve with the overvoltage protection function is characterized in that the overvoltage protection mechanism (4) further comprises a first cavity (4d), a first piston (4e), a support frame (4f) and a third spring (4g), the first cavity (4d) is arranged inside the shell (1), the first piston (4e) penetrates through the shell (1), the bottom end of the first piston (4e) is located inside the first cavity (4d), the first piston (4e) is further located on one side of the compression ring (4b) and connected with the fixed connecting rod (4c), the support frame (4f) wraps the first piston (4e) and is arranged on the shell (1), and the third spring (4g) is arranged at the top end of the first piston (4e) and connected with the support frame (4 f).

4. The reverse flow-resisting one-way valve with the overpressure protection function as claimed in claim 3, wherein the bottom end of the first piston (4e) is in a truncated cone structure with a small bottom end and a large top end.

5. The reverse flow-resisting one-way valve with the overpressure protection function as claimed in claim 3, wherein the two ends of the fixed connecting rod (4c) are respectively provided with a first plug pin and a second plug pin, the first piston (4e) is provided with a first slot (4e1) corresponding to the movably connected first slot (4e1), and the press ring (4b) is provided with a second slot (4b1) corresponding to the second plug pin.

6. The reverse flow-resisting one-way valve with the overpressure protection function as claimed in claim 3 is characterized in that one end of the housing (1) close to the water outlet is further provided with a sliding groove (1c), the pressing ring (4b) is provided with a sliding block corresponding to the sliding groove (1c), the supporting frame (4f) is further provided with a guide sleeve (4f1), and the piston is provided with a guide sleeve (4f1) corresponding to the guide sleeve.