Silencing check valve

Abstract

The utility model relates to the technical field of noise reduction check valves, and discloses a noise reduction check valve which comprises a valve body and a front flange fixed at the front end of the valve body, the rear end of the valve body is fixedly connected with a rear flange, the inner wall of the front flange is in threaded connection with a fixing piece, the inner wall of the fixing piece is fixedly connected with four supporting ribs A, and the supporting ribs A are fixedly connected with the valve body. And mounting holes are formed in the surfaces of the two supporting ribs A. According to the noise reduction check valve, through the arrangement of the protection assembly, when the noise reduction check valve is used, the ceramic lining has very high hardness, abrasion resistance and high-temperature resistance, long-time stability can be maintained, corrosion-resistant rubber has elasticity, when the valve rod continuously moves back and forth, the elasticity of the rubber can absorb a part of energy, abrasion to the valve rod is reduced, and the noise reduction effect is good. In a high-temperature working environment, the ceramic can maintain the stability for a long time, so that friction and collision between the valve rod and the limiting sleeve are effectively reduced, the surface of the valve rod is prevented from being abraded, and the service life of the valve rod is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sound attenuation check valve especially relates to a sound attenuation check valve. BACKGROUND

[0002] The sound attenuation check valve is the valve that is opened and closed automatically by the medium flow, is used to prevent the medium backflow, is also called the check valve, the one-way valve, the sound attenuation check valve backflow valve and the back pressure valve. The check valve belongs to an automatic valve, and its main function is to prevent the medium backflow, prevent the pump and the driving motor reverse rotation, and the container medium discharge. The check valve can also be used to supply the pipeline of the auxiliary system in which the pressure can be increased to exceed the system pressure.

[0003] The sound attenuation check valve disclosed in the announcement No. CN215980992U, although the disc inside the utility model is impacted by water and adopts the convex structure design, so that the disc is more easily impacted and opened by water when the water flows, the water flow is facilitated, and the service life of the utility model is prolonged.

[0004] However, the sound attenuation check valve has the following shortcomings: the valve rod rubs and collides in the limiting sleeve under the impact of flowing water, which easily causes wear of the valve rod and is not convenient for prolonging the service life of the valve rod. UTILITY MODEL CONTENTS

[0005] (I) technical problems solved

[0006] The utility model aims at providing a sound attenuation check valve to solve the problem of inconveniently prolonging the service life of the valve rod in the background technology.

[0007] (II) technical scheme

[0008] In order to achieve the above purpose, the utility model is implemented by the following technical scheme: a sound attenuation check valve, comprising a valve body and a front flange fixed at the front end of the valve body, the rear end of the valve body is fixedly connected with a rear flange, the inner wall of the front flange is threadedly connected with a fixing piece, the inner wall of the fixing piece is fixedly connected with four support ribs A, the surfaces of two of the support ribs A are both provided with mounting holes, the inside of the mounting hole is inserted with an optimization assembly, the inner wall of the rear flange is fixedly connected with two support ribs B, one end of the support rib A and the support rib B is fixedly connected with a limiting sleeve, the inside of the limiting sleeve is provided with a protection assembly, the inside of the protection assembly is penetrated with a valve rod;

[0009] The optimization assembly comprises a mounting column inserted in the inside of the mounting hole, one end of the mounting column is fixedly connected with a mounting bracket, one end of the mounting bracket is threadedly connected with a limiting column, the surface of the limiting column is rotatably connected with a curved blade wheel;

[0010] The protection assembly comprises a ceramic lining arranged inside the limiting sleeve, and an anticorrosion rubber is fixedly connected to the inner wall of the ceramic lining.

[0011] As a further scheme of the present application, the front flange is provided with a groove and a sealing groove, the groove is matched with the front end of the fixing member, and the groove facilitates close connection with the fixing member to increase the sealing performance.

[0012] As a further scheme of the present application, the surface of the valve rod is sleeved with a sealing plate and an anti-loosing screw cap, the sealing plate is composed of a three-element ethylene propylene rubber full rubber coating and carbon steel, the anti-loosing screw cap facilitates preventing the sealing plate from sliding downward to increase the sealing performance.

[0013] As a further scheme of the present application, the lower surface of the valve rod is sleeved with a spring, the spring is made of stainless steel, the spring has elastic potential energy, and when the water body stops flowing, the spring releases the elastic potential energy to reset the sealing plate to prevent the water body from flowing backward.

[0014] As a further scheme of the present application, one end of the spring is fixedly sleeved at the rear end of the sealing plate, and the other end of the spring is overlapped on the surface of the rear flange limiting sleeve, so that the sealing plate can prevent the water body from flowing backward.

[0015] As a further scheme of the present application, the surface of one end of the mounting column is provided with a threaded groove, and a threaded cap is engaged in the threaded groove, so that the threaded cap facilitates installation, disassembly and optimization of the assembly and can be replaced.

[0016] As a further scheme of the present application, the front flange and the rear flange are both provided with connecting holes, and the number of the connecting holes is eight, so that the front flange and the rear flange can be connected with the pipeline.

[0017] (Three) beneficial effects

[0018] The utility model provides a kind of sound attenuation check valve, with the following beneficial effects:

[0019] 1, the sound attenuation check valve, by the setting of protection assembly, when using, ceramic lining has very high hardness, wear resistance and high temperature resistance, can maintain stability for a long time, anticorrosion rubber has elasticity, when valve rod is continuously operated back and forth, the elasticity of rubber can absorb part of energy, reduce the wear and tear of valve rod, in high temperature working environment, ceramic can maintain stability for a long time, to effectively reduce the friction and collision between valve rod and limiting sleeve, avoid the wear and tear of valve rod surface, help to prolong the service life of valve rod.

[0020] 2、The sound attenuation check valve, through the setting of optimization assembly, when in use, the sound attenuation check valve is installed on the pipeline, after the curved blade wheel is impacted by water body, the curved blade wheel rotates, which can help smooth fluid flow, control the speed and flow direction of fluid, reduce the impact force generated when the valve is closed, thereby slowing down the occurrence of water hammer effect, and help to improve the stability of fluid flow. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is overall structure schematic view of the utility model;

[0022] Fig. 2 It is rear flange structure schematic view of the utility model;

[0023] Fig. 3 It is overall split structure schematic view of the utility model;

[0024] Fig. 4 It is protection assembly and optimization assembly structure schematic view of the utility model.

[0025] In the drawing: 1, valve body;2, front flange;3, rear flange;4, fixed part;5, support rib A;6, optimization assembly;601, mounting column;602, mounting frame;603, limit post;604, curved blade wheel;7, support rib B;8, limit sleeve;9, protection assembly;901, ceramic lining;902, corrosion-resistant rubber;10, valve rod;11, sealing plate;12, anti-loose cap nut;13, spring. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the utility model.

[0027] Please refer to Figs. 1 to 4 The utility model provides a kind of technical scheme: a sound attenuation check valve, including valve body 1 and the front flange 2 of fixed in valve body 1 front end, the rear end of valve body 1 is fixedly connected with rear flange 3, the inner wall of front flange 2 is threadedly connected with fixed part 4, the inner wall of fixed part 4 is fixedly connected with four support rib A 5, the surface of two support rib A 5 is all provided with mounting hole, optimization assembly 6 is inserted in the inside of mounting hole, the inner wall of rear flange 3 is fixedly connected with two support rib B 7, one end of support rib A 5 and support rib B 7 is all fixedly connected with limit sleeve 8, protection assembly 9 is arranged in the inside of limit sleeve 8, valve rod 10 is penetrated in the inside of protection assembly 9;

[0028] The optimization assembly 6 comprises a mounting column 601 inserted in the mounting hole, one end of the mounting column 601 is fixedly connected with a mounting frame 602, one end of the mounting frame 602 is threadedly connected with a limiting column 603, the surface of the limiting column 603 is rotatably connected with a curved vane wheel 604. Through the arrangement of the optimization assembly 6, when in use, the sound attenuation check valve is installed on the pipeline, after the water body impacts the curved vane wheel 604, the curved vane wheel 604 rotates, which can help to smooth the fluid flow, control the speed and flow direction of the fluid, reduce the impact force generated when the valve is closed, thereby slowing down the occurrence of water hammer effect, and helping to improve the stability of fluid flow.

[0029] The protection assembly 9 comprises a ceramic lining 901 arranged in the limiting sleeve 8, and the inner wall of the ceramic lining 901 is fixedly connected with corrosion-resistant rubber 902. Through the arrangement of the protection assembly 9, in use, the ceramic lining 901 has very high hardness, wear resistance and high temperature resistance, and can maintain stability for a long time. The corrosion-resistant rubber 902 has elasticity, which can absorb part of the energy when the valve stem 10 is continuously operated back and forth, reducing the wear of the valve stem 10. In a high-temperature working environment, the ceramic can maintain stability for a long time, thereby effectively reducing the friction and collision between the valve stem 10 and the limiting sleeve 8, avoiding the wear of the surface of the valve stem 10, and helping to prolong the service life of the valve stem 10.

[0030] The surface of the front flange 2 is provided with a groove and a sealing groove, the groove is matched with the front end of the fixing part 4, and the groove and the sealing groove are arranged. The groove can be tightly connected with the fixing part 4 to increase the sealing performance, and the sealing groove is connected with the sealing ring inside the sealing groove, so that the sealing performance between the pipeline and the pipeline can be increased when the pipeline is connected, and the water leakage is prevented.

[0031] The surface of the valve stem 10 is threadedly sleeved with a sealing plate 11 and an anti-loose nut 12. The sealing plate 11 is composed of three-element ethylene-propylene rubber full rubber and carbon steel. Through the arrangement of the sealing plate 11 and the anti-loose nut 12, the noise is reduced, and the anti-loose nut 12 can prevent the sealing plate 11 from sliding downward under the impact of water flow, thereby increasing the sealing performance.

[0032] The lower surface of the valve stem 10 is sleeved with a spring 13, and the material of the spring 13 is stainless steel. Through the arrangement of the spring 13, the spring 13 has elasticity, and when the water flow stops, the spring 13 releases the elastic potential energy, so that the sealing plate 11 is reset, and the water backflow is prevented.

[0033] One end of the spring 13 is fixedly sleeved at the rear end of the sealing plate 11, and the other end of the spring 13 is overlapped on the surface of the limiting sleeve 8 of the rear flange 3. Through the arrangement of the sealing plate 11, the water backflow is prevented.

[0034] The surface of one end of the mounting column 601 is provided with a threaded groove, and a threaded cap is engaged in the threaded groove.

[0035] The front flange 2 and the rear flange 3 are provided with connecting holes, and the number of the connecting holes is eight.

[0036] The working steps of the device are as follows:

[0037] The first step is to install the sound attenuation check valve on the pipeline when in use.

[0038] The second step is that the ceramic lining 901 has very high hardness, wear resistance and high temperature resistance, and can maintain stability for a long time.

[0039] It should be noted that the device structure and the drawings mainly describe the principle of the utility model, and the setting of the power mechanism, the power supply system and the control system of the device is not completely described in the technical principle of the design.

[0040] The standard parts used can be purchased from the market, and can be ordered according to the description and drawings.

[0041] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A silencing check valve comprising a valve body (1) and a front flange (2) fixed to the front end of the valve body (1), characterized in that: The rear end of the valve body (1) is fixedly connected with a rear flange (3), the inner wall of the front flange (2) is threadedly connected with a fixing piece (4), the inner wall of the fixing piece (4) is fixedly connected with four support ribs A (5), the surfaces of two support ribs A (5) are both provided with mounting holes, the mounting holes are inserted with optimization assemblies (6), the inner wall of the rear flange (3) is fixedly connected with two support ribs B (7), one end of the support rib A (5) and the support rib B (7) are both fixedly connected with a limiting sleeve (8), the limiting sleeve (8) is provided with a protection assembly (9) in the inside, the valve rod (10) penetrates through the protection assembly (9); The optimization assembly (6) comprises a mounting column (601) inserted in the mounting hole, one end of the mounting column (601) is fixedly connected with a mounting frame (602), one end of the mounting frame (602) is threadedly connected with a limiting column (603), the surface of the limiting column (603) is rotatably connected with a curved blade wheel (604). The protection assembly (9) comprises a ceramic lining (901) arranged in the limiting sleeve (8), the inner wall of the ceramic lining (901) is fixedly connected with a corrosion-resistant rubber (902).

2. A sound attenuating check valve according to claim 1 wherein: The surface of the front flange (2) is provided with a groove and a sealing groove, the groove is matched with the front end of the fixing piece (4).

3. A sound attenuating check valve according to claim 1 wherein: The surface of the valve rod (10) is threadedly sleeved with a sealing plate (11) and an anti-loosening cap (12), the sealing plate (11) is composed of a carbon steel and a three-ethylene propylene rubber full rubber coating.

4. A sound attenuating check valve according to claim 1 wherein: The lower surface of the valve rod (10) is sleeved with a spring (13), the material of the spring (13) is stainless steel.

5. A sound attenuating check valve according to claim 4 wherein: One end of the spring (13) is fixedly sleeved at the rear end of the sealing plate (11), the other end of the spring (13) is lapped on the surface of the limiting sleeve (8) of the rear flange (3).

6. A sound attenuating check valve according to claim 1 wherein: The surface of one end of the mounting column (601) is provided with a threaded groove, the threaded groove is engaged with a threaded cap.

7. A sound attenuating check valve according to claim 1 wherein: The front flange (2) and the rear flange (3) are both provided with connecting holes, the number of the connecting holes is eight.

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