Quick-response one-way valve

Abstract

The utility model provides a quick response one-way valve which comprises a main body assembly, and the main body assembly comprises a valve shell, a first annular groove, a connecting ring, a second annular groove, a flow stop ring, a spring, a connecting disc, a connecting rod, a sealing core, a third annular groove and a limiting ring. When a forward medium flows in, the spring can quickly deform, so that the sealing core quickly overcomes elastic force to be opened; when the medium flows reversely, the spring resets rapidly to generate elastic force, the sealing core is driven to act rapidly, sealing is started before reverse pressure does not completely form large influence, and the response speed is greatly increased. The sealing ring on the inner side wall of the flow stopping ring is tightly attached to the sealing core, the contact area is increased when abutting faces are attached, larger pressure can be borne, medium leakage is effectively prevented, and the good sealing effect is kept for a long time. The valve and a pipeline can be conveniently connected and disassembled through the slipknot cap rotationally connected to the valve shell, complex tools and large-amplitude operation are not needed, and the installation time and the labor cost are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to one -way valve technical field especially relates to a one -way valve of quick response. BACKGROUND

[0002] In the wide industrial production field, whether it is the delivery of various chemical raw materials in the petrochemical industry, or the processing of food fluid in the food processing industry, or in the scene of building construction water supply and drainage system, etc. ; And in daily life, like the tap water supply system of family, gas delivery pipeline, etc., all cannot do without the delivery of fluid. And in these fluid delivery systems, the one-way valve plays a vital role, it is the key component that guarantees the medium to flow in a specific direction, that is, one-way flow.

[0003] The traditional one-way valve is slow in response speed in actual use, when the medium flow direction changes suddenly, the valve disc or valve core cannot react quickly, and the sealing performance is poor, after long-term use, the valve seat and the valve core are prone to wear, which leads to poor sealing and frequent leakage of medium; In addition, the traditional one-way valve is inconvenient to install and maintain, the complex structure makes the installation process time-consuming and laborious, and when repairing later, it is difficult to disassemble and replace parts, which increases the maintenance cost and downtime, therefore, a one-way valve with quick response is proposed. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model hopes to provide a one-way valve with quick response to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial choice.

[0005] The technical scheme of the utility model embodiment is realized as follows: a one-way valve with quick response, comprising a main body assembly, the main body assembly comprises a valve shell, a first annular groove, a connecting ring, a second annular groove, a flow stopping ring, a spring, a connecting disc, a connecting rod, a sealing core, a third annular groove and a limiting ring.

[0006] The inner side wall of the valve shell is provided with the first annular groove on one side, the first annular groove is fixedly connected with the connecting ring, the inner side wall of the valve shell is provided with the second annular groove on the other side, the inner side wall of the second annular groove is fixedly connected with the flow stopping ring, the side close to the flow stopping ring of the connecting ring is fixedly connected with the spring, one end of the spring away from the connecting ring is fixedly connected with the connecting disc, the side away from the spring of the connecting disc is fixedly connected with the connecting rod, one end of the connecting rod away from the connecting disc is fixedly connected with the sealing core, the inner side wall of the valve shell close to the second annular groove is provided with the third annular groove, the inner side wall of the third annular groove is fixedly connected with the limiting ring, and the outer side wall of the connecting rod is slidably connected to the inner side wall of the limiting ring.

[0007] Further preferably, the inner side wall of the flow-stopping ring is fixedly connected with a sealing ring, and the outer side wall of the sealing core is connected to the inner side wall of the sealing ring on the side close to the connecting rod.

[0008] Further preferably, a plurality of flow guide holes are arranged on the side of the limiting ring close to the outer side of the connecting rod in a circumferential direction.

[0009] Further preferably, the outer side wall of the sealing ring is fixedly connected with a reinforcing ring on both sides, and the sides close to each other of the two reinforcing rings are fixedly connected to the two sides of the flow-stopping ring close to the outer side of the sealing ring.

[0010] Further preferably, the inner side wall of the sealing ring is provided with an arc-shaped abutting surface, the side of the sealing core away from the connecting rod is provided with a hemispherical abutting surface, and the sides close to the connecting rod of the arc-shaped abutting surface and the hemispherical abutting surface are connected.

[0011] Further preferably, the outer side wall of the valve shell is provided with an annular limiting groove on both sides, and the inner side wall of the annular limiting groove is rotatably connected with a running knot cap.

[0012] Further preferably, the two ends of the valve shell are fixedly connected with an annular sealing gasket.

[0013] Further preferably, the inner side wall of the running knot cap is provided with an internal thread.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical scheme.

[0015] 1. The utility model discloses a spring with special design and selection, moderate elasticity, when the medium flows in, the spring can deform rapidly, so that the sealing core opens rapidly; when the medium flows reversely, the spring resets rapidly to generate elastic force, drives the sealing core to act rapidly, and starts to seal before the reverse pressure has a great influence, compared with the traditional check valve, the response speed is greatly improved.

[0016] 2. The sealing ring on the inner side wall of the flow-stopping ring is closely attached to the sealing core, and the arc-shaped abutting surface on the inner side wall of the sealing ring and the hemispherical abutting surface of the sealing core have a large contact area when attached, can bear greater pressure, effectively prevent medium leakage, and can maintain good sealing effect even after long-term use.

[0017] 3. The utility model discloses a running knot cap rotatably connected on the valve shell, which is convenient for the connection and disconnection of the valve and the pipeline, does not need complex tools and large-scale operation, saves installation time and labor cost. DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced. Obviously, the accompanying drawings in the following description only only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a whole structure diagram of the utility model;

[0020] Figure 2 It is a whole sectional structure diagram of the utility model;

[0021] Figure 3 It is a spring and sealing core structure diagram of the utility model;

[0022] Figure 4 It is a whole structure diagram of the utility model; Figure 2 It is the A area enlarged view of the utility model.

[0023] Reference signs: 1, main body assembly; 11, valve shell; 12, first annular groove; 13, connecting ring; 14, second annular groove; 15, flow stop ring; 16, spring; 17, connecting disc; 18, connecting rod; 19, sealing core; 20, third annular groove; 21, limiting ring; 22, sealing ring; 23, flow guide hole; 24, reinforcing ring; 25, arc abutting surface; 26, semispherical abutting surface; 27, annular limiting groove; 28, slip knot cap; 29, annular sealing gasket; 30, internal thread. DETAILED DESCRIPTION

[0024] In the following, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0025] The embodiments of the utility model will be described in detail below with reference to the drawings.

[0026] As Figures 1-4 shown, the utility model embodiment provides a kind of one-way valve of fast response, including main body assembly 1, main body assembly 1 includes valve shell 11, first annular groove 12, connecting ring 13, second annular groove 14, flow stop ring 15, spring 16, connecting disc 17, connecting rod 18, sealing core 19, third annular groove 20 and limiting ring 21;

[0027] The inner side wall of the valve shell 11 is provided with a first annular groove 12, the inner side wall of the first annular groove 12 is fixedly connected with a connecting ring 13, the inner side wall of the valve shell 11 is provided with a second annular groove 14 on the other side, the inner side wall of the second annular groove 14 is fixedly connected with a flow stopping ring 15, the side of the connecting ring 13 close to the flow stopping ring 15 is fixedly connected with a spring 16, the end of the spring 16 away from the connecting ring 13 is fixedly connected with a connecting disc 17, the side of the connecting disc 17 away from the spring 16 is fixedly connected with a connecting rod 18 at the center, the end of the connecting rod 18 away from the connecting disc 17 is fixedly connected with a sealing core 19, the inner side wall of the valve shell 11 close to the second annular groove 14 is provided with a third annular groove 20, the inner side wall of the third annular groove 20 is fixedly connected with a limiting ring 21, the outer side wall of the connecting rod 18 is slidingly connected to the inner side wall of the limiting ring 21; when the medium flows into the valve shell 11 in the forward direction, the medium pressure acts on the sealing core 19, the spring 16 used in the one-way valve has a suitable elastic coefficient, the spring 16 is specially designed and selected, and the elasticity is moderate, which will not hinder the opening too hard, nor will it be too soft to cause sealing not to be tight, under the action of the forward medium pressure, the spring 16 can quickly deform and quickly release the binding force on the sealing core 19, so that the sealing core 19 can overcome the elastic force of the spring 16 in a short time and start to move away from the flow stopping ring 15; once the medium appears a reverse flow trend, the spring 16 quickly recovers to the initial state and generates an elastic force due to its good reset characteristics, which can quickly act on the connecting disc 17 and drive the sealing core 19 to move quickly to the flow stopping ring 15, and the sealing core 19 starts to seal when the reverse medium pressure has not yet formed a large influence.

[0028] In one embodiment, specifically: the inner side wall of the flow stopping ring 15 is fixedly connected with a sealing ring 22, and the outer side wall of the sealing core 19 close to the connecting rod 18 is attached to the inner side wall of the sealing ring 22; through the attached structure design of the sealing ring 22 and the sealing core 19, when the sealing core 19 approaches the flow stopping ring 15, it can quickly and tightly attach to the sealing ring 22, and this quick attachment action can stop the reverse flow of the medium in a short time, realizing the quick cut-off response of the valve; compared with some ordinary sealing structures, this direct attachment method reduces the time delay of the sealing action and improves the response speed of the valve to the reverse medium.

[0029] In one embodiment, specifically: a plurality of flow guide holes 23 are circumferentially arranged on one side of the limiting ring 21 close to the outer side of the connecting rod 18; through the circumferential distribution of the plurality of flow guide holes 23 on one side of the limiting ring 21 close to the outer side of the connecting rod 18, this distribution mode can make the medium more uniform when passing through the limiting ring 21, and uniform medium flow helps to avoid the situation that the local flow rate is too fast or too slow, and reduces the uneven erosion and impact of the medium on the internal components of the valve; for example, in some precision fluid control systems with high requirements for medium flow stability, the flow guide holes 23 can ensure that the medium passes through the valve in a relatively stable state, which is conducive to the stable operation of the system.

[0030] In one embodiment, specifically: the outer side wall of the sealing ring 22 is fixedly connected with a reinforcing ring 24 on both sides, and the sides close to each other of the two reinforcing rings 24 are fixedly connected to the two sides of the flow stopping ring 15 close to the outer side of the sealing ring 22; the reinforcing ring 24 provides accurate installation and positioning for the sealing ring 22; since the two reinforcing rings 24 are fixedly connected to the two sides of the flow stopping ring 15 close to the outer side of the sealing ring 22, the sealing ring 22 can be accurately placed on the inner side wall of the flow stopping ring 15, ensuring the accuracy and consistency of its position, which is crucial for achieving good fit between the sealing ring 22 and the sealing core 19, because only when the sealing ring 22 is in the correct position can it form an effective sealing interface with the sealing core 19 during valve operation; during the operation of the valve, whether it is forward conduction or reverse cutoff, the flow of the medium will exert a certain force on the sealing ring 22, and the reinforcing ring 24 can effectively limit the displacement of the sealing ring 22; for example, when the medium flows forward, although the sealing core 19 will move away from the sealing ring 22, the flow of the medium may exert a certain impact on the sealing ring 22, and the reinforcing ring 24 can prevent the sealing ring 22 from being displaced due to this impact; during reverse cutoff, the reverse medium pressure will cause the sealing core 19 to press tightly against the sealing ring 22, and the reinforcing ring 24 can ensure that the sealing ring 22 will not be deformed or displaced due to excessive pressure, thereby ensuring the stability of the sealing performance.

[0031] In one embodiment, specifically: the inner side wall of the sealing ring 22 is provided with an arc-shaped abutting surface 25, and the side of the sealing core 19 away from the connecting rod 18 is provided with a hemispherical abutting surface 26, and the side of the arc-shaped abutting surface 25 and the hemispherical abutting surface 26 close to the connecting rod 18 is attached; through the special shape design of the arc-shaped abutting surface 25 and the hemispherical abutting surface 26, when they are attached, they can form a larger contact area, compared with planar contact, this larger contact area can more effectively prevent the leakage of the medium, when the valve is in the reverse blocking state, the reverse medium pressure will make the sealing core 19 tightly pressed against the sealing ring 22, the larger contact area means more sealing points, which can withstand greater pressure without leakage, thereby significantly improving the sealing performance of the valve; the smooth surface of the hemispherical abutting surface 26 and the arc-shaped abutting surface 25 has smaller friction resistance during attachment and separation, in the working process of the valve frequently opened and closed, the smaller friction resistance can reduce energy loss, at the same time, it also reduces the load of the driving component (such as the spring 16), further improves the overall performance and reliability of the valve.

[0032] In one embodiment, specifically: the outer side wall of the valve shell 11 is provided with an annular limiting groove 27 on both sides, and the inner side wall of the two annular limiting grooves 27 is rotationally connected with a running knot cap 28; when installing or disassembling the check valve in the pipeline system, the running knot cap 28 provides convenient operation, which is rotationally connected with the annular limiting groove 27, by rotating the running knot cap 28, the check valve can be quickly connected or separated from the pipeline; in some limited space pipeline layout, this design can complete the installation and disassembly work without complex tools and large-scale operation, improving the work efficiency; in addition, after the running knot cap 28 is tightened, it can reinforce the connection between the pipeline and the valve shell 11, when the pressure fluctuation and vibration caused by the flow of the medium in the pipeline, the running knot cap 28 restricts the relative displacement between the valve shell 11 and the pipeline by cooperating with the annular limiting groove 27, avoiding the loosening of the connection part, ensuring the stable connection of the check valve during work, and ensuring the safety and stability of the medium conveying.

[0033] In one embodiment, specifically: the valve shell 11 is fixedly connected with an annular sealing gasket 29 at both ends; wherein the direct function of the annular sealing gasket 29 is to prevent the leakage of the medium from both ends of the valve shell 11; when the check valve is working, the medium pressure in the pipeline is large, if the sealing of both ends of the valve shell 11 is not strict, the medium is easy to seep out; in the pipeline system conveying toxic, flammable or valuable medium, leakage can cause safety accidents, environmental pollution or economic losses; the annular sealing gasket 29 can tightly attach to the inner wall of the pipeline to form a reliable sealing barrier, ensuring the normal flow of the medium in the valve, improving the safety and stability of the system.

[0034] In one embodiment, specifically: the inner side wall of the gooseneck cap 28 is provided with an internal thread 30; through the design of the internal thread 30, it can be quickly and conveniently connected with pipes or pipe fittings with external threads; in the actual pipeline installation engineering, the construction personnel only need to align the gooseneck cap 28 with the corresponding external threaded part, and then through a simple rotating operation, the connection can be completed, and compared with other connection methods, such as welding, flange connection, etc., the connection method does not need complex tools and professional skills, greatly saves the installation time and labor cost, and improves the installation efficiency.

[0035] The utility model discloses when working: when the medium is according to the positive direction and flows into the valve housing 11, the medium pressure acts on the sealing core 19, and because of the pressure push, the sealing core 19 overcomes the elasticity of spring 16, drives the connecting disc 17 together to the direction of moving away from the flow stop ring 15 through the connecting rod 18, at this time, the sealing core 19 is separated from the sealing ring 22, and the medium can pass through the gap between the sealing core 19 and the sealing ring 22 smoothly, and simultaneously, the multiple flow guide holes 23 that are set up on the limiting ring 21 play the auxiliary flow guide effect, make the medium flow more smoothly, improve the conduction efficiency of valve, and in the medium flow process, the annular sealing pad 29 at both ends of the valve housing 11 can effectively prevent the medium from leaking from both ends of the valve housing 11, and ensure that the medium all flows through the valve passage, once the medium appears reverse flow trend, the elasticity of spring 16 and the reverse medium pressure jointly act, push the connecting disc 17 to the direction of moving towards the flow stop ring 15, thereby drive the sealing core 19 to move towards the flow stop ring 15, the side of the outer side wall of the sealing core 19 close to the connecting rod 18 is tightly attached on the inner side wall of the sealing ring 22, and the arc contact surface 25 of the inner side wall of the sealing ring 22 cooperates with the hemispherical contact surface 26 of the side of the sealing core 19 away from the connecting rod 18, further enhances the sealing effect, prevents the reverse medium from passing through, realizes the cut-off function, in addition, the reinforcing ring 24 on both sides of the outer side wall of the sealing ring 22 can play the stable effect to the sealing ring 22, prevent its displacement or deformation when being subjected to the reverse pressure, ensure the reliability of sealing performance, the gooseneck cap 28 rotationally connected on both sides of the outer side wall of the valve housing 11, the internal thread 30 set up on the inner side wall of the gooseneck cap 28 can be used to connect external pipes and other components, facilitate the installation and dismounting of valve, and after installation, the cooperation of the gooseneck cap 28 and the annular limiting groove 27 can prevent the loosening of the connecting part, ensure the stability of valve work.

[0036] The above only describes the preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A quick-responding check valve characterized by: The utility model provides a valve, including main part assembly (1), main part assembly (1) includes valve shell (11), first annular groove (12), connecting ring (13), second annular groove (14), flow stop ring (15), spring (16), connecting disc (17), connecting rod (18), sealing core (19), third annular groove (20) and limit ring (21); The inner side wall of the valve shell (11) is provided with a first annular groove (12) on one side, the inner side wall of the first annular groove (12) is fixedly connected with a connecting ring (13), the inner side wall of the valve shell (11) is provided with a second annular groove (14) on the other side, the inner side wall of the second annular groove (14) is fixedly connected with a flow stop ring (15), one side of the connecting ring (13) close to the flow stop ring (15) is fixedly connected with a spring (16), one end of the spring (16) away from the connecting ring (13) is fixedly connected with a connecting disc (17), the connecting disc (17) is fixedly connected with a connecting rod (18) at the center of the side away from the spring (16), one end of the connecting rod (18) away from the connecting disc (17) is fixedly connected with a sealing core (19), the inner side wall of the valve shell (11) is provided with a third annular groove (20) on the side close to the second annular groove (14), the inner side wall of the third annular groove (20) is fixedly connected with a limit ring (21), and the outer side wall of the connecting rod (18) is slidably connected to the inner side wall of the limit ring (21).

2. A quick responding check valve according to claim 1, characterized in that: The inner side wall of the flow stop ring (15) is fixedly connected with a sealing ring (22), and the outer side wall of the sealing core (19) is attached to the inner side wall of the sealing ring (22) on the side close to the connecting rod (18).

3. A quick responding check valve according to claim 1, characterized in that: A plurality of flow guide holes (23) are circumferentially formed on one side of the limit ring (21) close to the outer side of the connecting rod (18).

4. A quick responding check valve according to claim 2, characterized in that: The outer side walls of the sealing ring (22) are fixedly connected with reinforcing rings (24) on both sides, and the sides close to each other of the two reinforcing rings (24) are fixedly connected to the two sides of the flow stop ring (15) close to the outer side of the sealing ring (22).

5. A quick responding check valve according to claim 2, characterized in that: The inner side wall of the sealing ring (22) is provided with an arc-shaped abutting surface (25), the side away from the connecting rod (18) of the sealing core (19) is provided with a hemispherical abutting surface (26), and the sides close to the connecting rod (18) of the arc-shaped abutting surface (25) and the hemispherical abutting surface (26) are attached.

6. A quick responding check valve according to claim 1, characterized in that: The outer side walls of the valve shell (11) are provided with annular limiting grooves (27) on both sides, and the inner side walls of the two annular limiting grooves (27) are rotatably connected with a running knot cap (28).

7. A quick responding check valve according to claim 6, characterized in that: The two ends of the valve shell (11) are fixedly connected with annular sealing gaskets (29).

8. A quick responding check valve according to claim 6, characterized in that: The inner side wall of the running knot cap (28) is provided with an internal thread (30).

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