CN215487826U

CN215487826U - Flow-limiting one-way valve

Info

Publication number: CN215487826U
Application number: CN202120530262.4U
Authority: CN
Inventors: 吴田洪; 常泽光
Original assignee: Tianjin Hanbai Automation Equipment Co ltd
Current assignee: Tianjin Hanbai Automation Equipment Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-01-11
Anticipated expiration: 2031-03-15

Abstract

The utility model belongs to the technical field of one-way valves, and particularly relates to a flow-limiting one-way valve which comprises a valve body, wherein a water inlet is formed in one side of the valve body, a water delivery channel is formed in the valve body, the water inlet is communicated with the water delivery channel, a first sliding block is arranged in the water delivery channel in a sliding mode, two first springs are fixedly arranged on one side of the first sliding block, one ends of the two first springs are fixedly connected with limiting rods, one ends of the two limiting rods are fixedly connected with the inner wall of one side of the water delivery channel, one side of the first sliding block is fixedly connected with a push rod, an L-shaped groove is formed in the bottom of the water delivery channel, a flow-limiting cavity is formed in the bottom of the water delivery channel, a second sliding block is arranged in the flow-limiting cavity in a sliding mode, a sliding hole is formed in the top of the flow-limiting cavity, and a sliding rod is arranged on the inner wall of the sliding hole in a sliding mode. The check valve has the advantages of simple structure and reasonable design, can reasonably limit the flow of fluid and protect the spring, and ensures that the check valve can be stably used for a long time.

Description

Flow-limiting one-way valve

Technical Field

The utility model relates to the technical field of one-way valves, in particular to a flow-limiting one-way valve.

Background

As is well known, a check valve is a directional control valve in which fluid can flow in only one direction but not in the opposite direction. The working principle is that fluid enters from an inlet, overcomes spring force and friction force to open a valve port of the one-way valve, and flows from the inlet to an outlet; when the inlet is free of fluid, under the action of spring force and outlet fluid pressure; the valve port is in a closed state, so that the pipeline from the outlet to the inlet is not communicated, and the one-way valve is used for not allowing the fluid to reversely flow.

However, in the prior art, a common check valve only can conduct fluid in one direction, and cannot limit the flow of the fluid, and when the impact of the fluid is large, the elasticity of the spring structure under a high pressure for a long time may be affected, so that the service life of the spring is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a flow-limiting one-way valve.

In order to achieve the purpose, the utility model adopts the following technical scheme: a flow-limiting one-way valve comprises a valve body, wherein a water inlet is formed in one side of the valve body, a water delivery channel is formed in the valve body, the water inlet is communicated with the water delivery channel, a first sliding block is arranged in the water delivery channel in a sliding mode, two first springs are fixedly arranged on one side of the first sliding block, limiting rods are fixedly connected to one ends of the two first springs, one ends of the two limiting rods are fixedly connected with the inner wall of one side of the water delivery channel, a push rod is fixedly connected to one side of the first sliding block, an L-shaped groove is formed in the bottom of the water delivery channel, a flow-limiting cavity is formed in the bottom of the water delivery channel, a second sliding block is arranged in the flow-limiting cavity in a sliding mode, a sliding hole is formed in the top of the flow-limiting cavity, a sliding rod is slidably arranged on the inner wall of the sliding hole, and the bottom of the sliding rod is fixedly connected with the top of the second sliding block, the surface cover of slide bar is equipped with the second spring, the top of second spring with the fixed surface connection of slide bar, the bottom of second spring with the edge fixed connection of slide opening, set up water channel in the bottom of valve body, water channel with L type recess intercommunication, the current-limiting chamber is located directly over water channel, just the current-limiting chamber with water channel intercommunication.

Preferably, the water conveying pipeline is a rectangular pipeline, the first sliding block is a rectangular sliding block, and the first sliding block is matched with the rectangular pipeline.

Preferably, the first spring is sleeved on the limiting rod, a part of the limiting rod is inserted into the first spring, and the distance from one end of the first spring close to the first sliding block to the end of the first spring fixed to the limiting rod is greater than the length of the sliding block.

Preferably, the ends of the push rods close to each other are both conical, and the ends of the push rods are matched with each other.

Preferably, the L-shaped hole is communicated with the water outlet channel through a round hole, the flow limiting cavity is the same as the water outlet channel in shape, and the side surface of the second sliding block is larger than the surface of the round hole.

Preferably, the two first springs are respectively located at two ends of one side of the first sliding block, the push rod is located between the two first springs, the width of the first sliding block is larger than that of the L-shaped groove, and the length of the first sliding block is smaller than that of the L-shaped groove.

Compared with the prior art, the utility model has the beneficial effects that: when fluid enters the valve body from the water inlet, the fluid enters the water delivery channel, then the first sliding block is impacted by the fluid to slide rightwards, the first sliding block slides to enable the two first springs to be extruded and contracted, the push rod moves to be close to the top of the sliding rod, when the first sliding block moves to be completely positioned right above the L-shaped groove, the first sliding block is continuously impacted by the fluid to move rightwards continuously to enable the water delivery channel to be communicated with the L-shaped groove, when the fluid is impacted greatly, the first sliding block continues to move rightwards, the contraction length of the first spring is equal to the distance from the initial first sliding block to the top end of the limiting rod at the moment, the first sliding block is abutted against the two corresponding limiting rods, so that the first spring is not deformed any more when the first sliding block is not moved any more, the first spring is deformed to a certain degree, and the first spring is protected from being damaged by overlarge extrusion, the first sliding block can drive the push rod to move leftwards while moving leftwards, the push rod moves leftwards to be close to the sliding rod gradually, then the sliding rod moves downwards to enable the second sliding block to move downwards to slowly reduce the depth of the round hole so as to control the flow of fluid entering the water outlet channel to achieve the effect of flow limiting, and when the work is finished, restoring forces of the two first springs and the second spring enable the first sliding block and the second sliding block to return to the initial positions.

The check valve has the advantages of simple structure and reasonable design, can reasonably limit the flow of fluid and protect the spring, and ensures that the check valve can be stably used for a long time.

Drawings

FIG. 1 is a schematic sectional front view of the structure of the present invention;

FIG. 2 is a schematic top cross-sectional view of the present invention;

FIG. 3 is an enlarged view of part A of FIG. 1;

in the figure: 1. a valve body; 2. a water inlet; 3. a water delivery channel; 4. a first slider; 5. a first spring; 6. a limiting rod; 7. a push rod; 8. an L-shaped groove; 9. a flow-restricting cavity; 10. a second slider; 11. a slide bar; 12. a second spring; 13. a water outlet channel; 14. a circular hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a flow-limiting one-way valve comprises a valve body 1, a water inlet 2 is formed in one side of the valve body 1, a water delivery channel 3 is formed in the valve body 1, the water inlet 2 is communicated with the water delivery channel 3, a first sliding block 4 is slidably mounted in the water delivery channel 3, two first springs 5 are welded on one side of the first sliding block 4, limiting rods 6 are welded at one ends of the two first springs 5, one ends of the two limiting rods 6 are welded with the inner wall of one side of the water delivery channel 3, a push rod 7 is welded on one side of the first sliding block 4, an L-shaped groove 8 is formed in the bottom of the water delivery channel 3, a flow-limiting cavity 9 is formed in the bottom of the water delivery channel 3, a second sliding block 10 is slidably mounted in the flow-limiting cavity 9, a sliding hole is formed in the top of the flow-limiting cavity 9, a sliding rod 11 is slidably mounted on the inner wall of the sliding hole, the bottom of the sliding rod 11 is welded with the top of the second sliding block 10, a second spring 12 is sleeved on the surface of the sliding rod 11, the top end of the second spring 12 is welded with the surface of the sliding rod 11, the bottom end of the second spring 12 is welded with the edge of the sliding hole, a water outlet channel 13 is formed in the bottom end of the valve body 1, the water outlet channel 13 is communicated with the L-shaped groove 8, the flow limiting cavity 9 is located right above the water outlet channel 13, and the flow limiting cavity 9 is communicated with the water outlet channel 13.

The water pipeline is a rectangular pipeline, the first sliding block 4 is a rectangular sliding block, the first sliding block 4 is matched with the rectangular pipeline, the first spring 5 is sleeved on the limiting rod 6, a part of the limiting rod 6 is inserted into the first spring 5, the distance from one end of the first spring 5 close to the first sliding block 4 to one end of the first spring 5 fixed with the limiting rod 6 is larger than the length of the sliding block, one end of the push rod 7 close to each other is conical, the end parts of the push rod 7 are mutually matched, the L-shaped hole is communicated with the water outlet channel 13 through a round hole 14, the shape of the flow limiting cavity 9 is the same as that of the water outlet channel 13, the side surface of the second sliding block 10 is larger than the surface of the round hole 14, the two first springs 5 are respectively positioned at the two ends of one side of the first sliding block 4, the push rod 7 is positioned between the two first springs 5, the width of the first sliding block 4 is larger than that of the L-shaped groove 8, the length of the first sliding block 4 is smaller than that of the L-shaped groove 8, the check valve has the advantages of simple structure and reasonable design, can reasonably limit the flow of fluid and protect the spring, and ensures that the check valve can be stably used for a long time.

The working principle is as follows: when fluid enters the valve body 1 from the water inlet 2, the fluid enters the water delivery channel 3, then the first slider 4 slides rightwards under the impact of the fluid, the first slider 4 slides to enable the two first springs 5 to be extruded and contracted, the push rod 7 moves to be close to the top of the slide rod 11, when the first slider 4 moves to be completely positioned right above the L-shaped groove 8, the first slider 4 continues to move rightwards under the impact of the fluid, the water delivery channel 3 is communicated with the L-shaped groove 8, when the fluid impact is large, the first slider 4 continues to move rightwards, the contraction length of the first spring 5 is equal to the distance from the initial first slider 4 to the top end of the limiting rod 6, the first slider 4 is abutted to the two corresponding limiting rods 6, so that the first spring 5 is not deformed when the first slider 4 does not move any more, and the first spring 5 is deformed to a certain extent, the protection first spring 5 can not receive too big extrusion and lead to the elasticity impaired, first slider 4 can drive push rod 7 to move left when moving left, push rod 7 moves left and is close to slide bar 11 gradually, then make slide bar 11 move down so that make second slider 10 move down and slowly reduce the degree of depth of round hole 14 and thus control the flow that the fluid got into outlet channel 13 and reach the effect of current-limiting, restoring force of two first springs 5 and a second spring 12 makes first slider 4 and second slider 10 return to the initial position when work finishes, the utility model is simple in construction, it is rational in design, can be rational to carry on the current-limiting and to the protection of spring to the fluid, guarantee the stable use for a long time of check valve.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A flow-limiting one-way valve comprises a valve body (1), and is characterized in that: a water inlet (2) is formed in one side of the valve body (1), a water delivery channel (3) is formed in the valve body (1), the water inlet (2) is communicated with the water delivery channel (3), a first slider (4) is slidably mounted in the water delivery channel (3), two first springs (5) are fixedly mounted on one side of the first slider (4), one ends of the two first springs (5) are fixedly connected with limiting rods (6), one ends of the two limiting rods (6) are fixedly connected with the inner wall of one side of the water delivery channel (3), a push rod (7) is fixedly connected on one side of the first slider (4), an L-shaped groove (8) is formed in the bottom of the water delivery channel (3), a flow limiting cavity (9) is formed in the bottom of the water delivery channel (3), and a second slider (10) is slidably mounted in the flow limiting cavity (9), the slide opening has been seted up at the top in restriction chamber (9), the inner wall slidable mounting of slide opening has slide bar (11), the bottom of slide bar (11) with the top fixed connection of second slider (10), the surface cover of slide bar (11) is equipped with second spring (12), the top of second spring (12) with the fixed surface connection of slide bar (11), the bottom of second spring (12) with the edge fixed connection of slide opening, water outlet channel (13) have been seted up in the bottom of valve body (1), water outlet channel (13) with L type recess (8) intercommunication, restriction chamber (9) are located directly over water outlet channel (13), just restriction chamber (9) with water outlet channel (13) intercommunication.

2. A flow-restricting, one-way valve as claimed in claim 1, wherein: the water conveying pipeline is a rectangular pipeline, the first sliding block (4) is a rectangular sliding block, and the first sliding block (4) is matched with the rectangular pipeline.

3. A flow-restricting, one-way valve as claimed in claim 1, wherein: the first spring (5) is sleeved on the limiting rod (6), one part of the limiting rod (6) is inserted into the first spring (5), and the distance from one end, close to the first sliding block (4), of the first spring (5) to one end, fixed by the first spring (5) and the limiting rod (6), is greater than the length of the sliding block.

4. A flow-restricting, one-way valve as claimed in claim 1, wherein: the ends of the push rods (7) close to each other are both conical, and the ends of the push rods and the conical are matched with each other.

5. A flow-restricting, one-way valve as claimed in claim 1, wherein: the L-shaped hole is communicated with the water outlet channel (13) through a round hole (14), the flow limiting cavity (9) is the same as the water outlet channel (13) in shape, and the side face of the second sliding block (10) is larger than the surface of the round hole (14).

6. A flow-restricting, one-way valve as claimed in claim 1, wherein: the two first springs (5) are respectively located at two ends of one side of the first sliding block (4), the push rod (7) is located between the two first springs (5), the width of the first sliding block (4) is larger than that of the L-shaped groove (8), and the length of the first sliding block (4) is smaller than that of the L-shaped groove (8).