Turnover type one-way valve convenient to install

Abstract

The utility model discloses a turning type one-way valve convenient to install, which comprises a valve body and a valve clack, a channel for air circulation is arranged in the valve body, the valve clack is rotatably arranged in the channel through a shaft pin, one end of the valve clack is provided with a cover plate part with the diameter matched with the inner diameter of the valve body, the other end of the valve clack is provided with a heavy hammer part, and the heavy hammer part is arranged on the valve body. And the weight of the cover plate part is greater than that of the heavy hammer part. The heavy hammer type structure is adopted, the market assembly requirement problem is optimized, and the heavy hammer type pipeline connector can be suitable for horizontal pipeline installation and vertical pipeline installation and is higher in universality. According to the one-way valve, quick-wear parts such as a spring are omitted, the stability and the reliability of the one-way valve are improved, and the after-sale cost caused by maintenance is reduced. The flange butt joint type structure is adopted, the one-way valve is convenient to position and install, the bolt sequentially penetrates through the pipeline, the one-way valve and the pipeline and then is screwed tightly, installation can be completed, and the installation speed is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a rollover check valve which is easy to install. Background Art

[0002] One-way valves, also known as non-return valves, are used in pipeline systems. They are automatically opened and closed by the force generated by the flow of the medium in the pipeline. They are an automatic valve used to prevent the medium from flowing back in the pipeline. According to different structural designs, they can be divided into lift check valves, swing check valves and butterfly check valves. The valve flap of the swing check valve rotates around the rotating shaft, and it is suitable for occasions with larger diameters. Swing check valves can be divided into three types according to the number of valve flaps: single-flap swing type, double-flap swing type and multi-flap swing type. Single-flap swing check valves are generally suitable for occasions with medium or large diameter pipelines. The swing check valve in the prior art has a disc-shaped valve flap in the valve seat, and the valve flap can rotate around the rotating shaft set in the valve seat. When the fluid medium in the pipeline flows back, the valve flap, under the action of the backflow medium, its sealing surface and the valve seat sealing surface are closely matched, so that the valve is quickly closed, which plays a role in preventing the medium from flowing back.

[0003] For example, a gravity check valve disclosed in the Chinese utility model patent (publication number: CN207437847U) includes a valve body, a valve inlet, a check valve seat, a valve outlet, a pin shaft, and a valve disc. The check valve seat on the valve body is a circular ring, and the flange-shaped plane of the circular ring, i.e., the check valve seat plane, is perpendicular to the horizontal plane or at an obtuse angle to the horizontal plane, and is installed in the center of the inlet and outlet flow channels of the valve. The valve disc is a cover plate that rotates freely around the pin shaft. When the cover plate rotates, the upper and lower positions are respectively limited by the valve body wall and the check valve seat plane, i.e., the flange-shaped plane; when limited by the flange-shaped plane, the cover plate plane completely covers the flange-shaped plane. Its operation is extremely reliable, and the operation of the check valve can be guaranteed without a spring. The elimination of the spring part can make its structure extremely simple, especially the reliability of operation is higher. However, a gravity check valve disclosed in the above-mentioned prior art can only be installed horizontally in a pipeline.

[0004] Another example is a flip check valve, compressor and air conditioning equipment disclosed in a Chinese utility model patent (publication number: CN207500552U), wherein the check valve includes a valve body and a valve plate. A rotating shaft passes eccentrically through the outer edge side of the valve plate and hinges the valve plate in the valve body. The weight of the valve plate with a small area on one side of the rotating shaft is greater than the weight of the valve plate with a large area on the other side of the rotating shaft; when the plane of the valve plate rotates around the rotating shaft to the side of the valve plate with a small area under the action of gravity, and rotates to a position perpendicular to the axis of the valve body and is restricted to remain motionless, the valve plate closes the valve body; when the valve plate rotates in the opposite direction to open the valve body under the action of external force, the angle of the valve plate opening is not greater than 90°. The check valve can be reset and closed by its own gravity. This reduces the limitation that the unit cannot use a gravity reset check valve due to the gas flow direction, and facilitates the overall structural layout and unit development. It also eliminates wearing parts such as springs, improves the stability and reliability of the one-way valve, and reduces maintenance costs. However, the flip check valve, compressor and air-conditioning equipment disclosed in the above-mentioned prior art can only be installed vertically in the pipeline.

[0005] Therefore, developing a one-way valve that can be installed both horizontally and vertically is an issue that needs to be urgently addressed in the industry. Utility Model Content

[0006] The utility model aims to provide a flip check valve which is easy to install and can be installed in a pipeline horizontally or vertically in order to solve the defects and shortcomings of the prior art.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A flip-type one-way valve that is easy to install, comprises a valve body and a valve disc, wherein the valve body is provided with a channel for gas circulation inside, the valve disc is rotatably arranged in the channel through a pin shaft, one end of the valve disc is provided with a cover plate portion whose diameter matches the inner diameter of the valve body, the other end of the valve disc is provided with a weight portion, the weight of the cover plate portion is greater than the weight of the weight portion, and the side wall of the valve body is provided with an arched portion that cooperates with the weight portion, when the valve body is installed vertically or horizontally, under the action of gravity, the valve disc rotates around the pin shaft to one side of the cover plate portion, and when it rotates to a position perpendicular to the axis of the valve body and is restricted and immobilized, the valve disc closes the channel of the valve body, and when under the action of external force, the valve disc rotates in the opposite direction to open the channel of the valve body.

[0009] Furthermore, a groove is provided at the lower end of the weight part, and a buffer block is embedded in the groove.

[0010] Furthermore, an annular groove is provided on the lower end surface of the cover plate portion, and a sealing ring is embedded in the annular groove.

[0011] Furthermore, a conical surface with a gradually decreasing diameter from bottom to top is provided at the lower end of the interior of the valve body, and an annular opening portion is formed at the upper end of the conical surface to cooperate with the cover plate portion to form a sealing surface.

[0012] Furthermore, the conical surface limits the opening angle of the valve flap to less than 90°.

[0013] Furthermore, the upper end surface and the lower end surface of the valve body are respectively provided with annular grooves, and sealing rings are embedded in the annular grooves.

[0014] Furthermore, the buffer block, sealing ring and sealing ring are all made of rubber material.

[0015] Furthermore, a plurality of mounting holes for mounting bolts are evenly arranged on the upper end surface and the lower end surface of the valve body along the circumferential direction.

[0016] Furthermore, the arched portion is provided with a circular hole for the pin to pass through.

[0017] Furthermore, an installation direction mark is provided on the outer wall of the valve body.

[0018] After adopting the above structure, the utility model has the following beneficial effects:

[0019] 1. The utility model discloses a flip-type one-way valve which is easy to install and adopts a heavy hammer structure to optimize the market assembly demand problem. It can be applied to both horizontal and vertical pipeline installations and is more versatile.

[0020] 2. The utility model discloses a flip-type one-way valve which is easy to install, eliminates the use of wearing parts such as springs, improves stability and reliability, and reduces after-sales costs caused by maintenance.

[0021] 3. The utility model describes a flip-type one-way valve which is easy to install, and a buffer block is arranged at the lower end of the weight part. When the gas medium passes through the channel with a fast flow rate and a large instantaneous impact force, the gas medium instantaneously impacts the valve disc, causing the valve disc to collide with the conical surface, and the buffer block can effectively buffer the impact force generated during the collision, thereby preventing the valve disc from being damaged by directly colliding with the conical surface when the impact force of the gas medium is large, thereby increasing the service life of the one-way valve.

[0022] 4. The utility model describes an easy-to-install flip-type one-way valve, and a sealing ring is provided on the end face of the contact end between the valve disc and the annular mouth. When the gas medium refluxes, the valve disc is pressed tightly against the annular mouth through the sealing ring, and has good sealing performance, which can further improve the sealing performance of the one-way valve and improve product quality.

[0023] 5. The utility model discloses a flip-type one-way valve that is easy to install. When assembling the one-way valve with the pipeline, most of the installation methods currently used in the market are to clamp the one-way valve with two pipelines. The one-way valve is difficult to locate during installation and is very inconvenient to install. The utility model adopts a flange docking structure, which is convenient for the positioning and installation of the one-way valve. The bolts are passed through the pipeline, the one-way valve, and the pipeline in sequence and then tightened to complete the installation, which greatly improves the convenience of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the present utility model, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0026] Figure 2 It is a cross-sectional view of the one-way valve of the utility model in a closed state when installed vertically;

[0027] Figure 3 It is a cross-sectional view of the one-way valve of the utility model in an open state when it is installed vertically;

[0028] Figure 4 It is a cross-sectional view of the one-way valve of the utility model in a closed state when installed horizontally;

[0029] Figure 5 It is a cross-sectional view of the one-way valve of the utility model in an open state when installed horizontally;

[0030] Figure 6 It is a three-dimensional schematic diagram of the valve disc of the utility model;

[0031] Figures 1 to 6 The bid number is:

[0032] 1. Valve body; 11. Arched part; 111. Round hole; 12. Channel; 13. Conical surface; 131. Annular mouth; 14. Annular groove; 141. Sealing ring; 15. Mounting hole; 16. Direction mark; 2. Valve disc; 21. Cover plate part; 211. Annular groove; 212. Sealing ring; 22. Weight part; 221. Groove; 222. Buffer block; 3. Pin shaft. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0034] It should be noted that, in the present invention, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0035] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] like Figures 1 to 6 As shown, a flip check valve that is easy to install includes a valve body 1 and a valve flap 2. The valve body 1 is provided with a passage 12 for gas circulation. The valve flap 2 is rotatably arranged in the passage 12 through a pin shaft 3. One end of the valve flap 2 is provided with a cover plate portion 21 whose diameter matches the inner diameter of the valve body 1. The other end of the valve flap 2 is provided with a weight portion 22. The weight of the cover plate portion 21 is greater than the weight of the weight portion 22. The side wall of the valve body 1 is provided with an arched portion 11 that cooperates with the weight portion 22. When the valve body 1 is installed vertically or horizontally, under the action of gravity, the valve flap 2 rotates around the pin shaft 3 to one side of the cover plate portion 21. When it rotates to a position perpendicular to the axis of the valve body 1 and is restricted to be immobile, the valve flap 2 closes the passage 12 of the valve body 1. When under the action of external force, the valve flap 2 rotates in the opposite direction to open the passage 12 of the valve body 1. The arched portion 11 is provided with a circular hole 111 for the pin shaft 3 to pass through.

[0037] Based on the above embodiments, the present invention aims to provide a flip-type one-way valve that is easy to install, including a valve body 1 and a valve flap 2, wherein the valve flap 2 is rotatably arranged inside the valve body 1 through a pin shaft 3, and one end of the valve flap 2 is provided with a cover plate portion 21 for sealing with the valve body 1, and the other end of the valve flap 2 is provided with a weight portion 22, and the weight of the cover plate portion 21 is greater than the weight of the weight portion 22. The present invention adopts a weight-type structure to optimize the market assembly demand problem, and can be applied to both horizontal and vertical pipeline installations, and is more versatile. The present invention eliminates the use of wearing parts such as springs, improves the stability and reliability of the one-way valve, and reduces the after-sales cost caused by maintenance.

[0038] When the valve body 1 is installed vertically and there is no pressure difference between the upper and lower parts of the valve disc 2, the valve disc 2 rotates around the pin 3 toward the cover plate part 21 under the action of its own weight, that is, the closing torque generated by the weight of the cover plate part 21 of the valve disc 2 is greater than the opening torque generated by the weight of the weight part 22. When the valve disc 2 plane is perpendicular to the axis of the valve body 1 and is immobilized by the annular mouth part 131, the valve disc 2 closes the channel 12 of the valve body 1, thereby preventing the gas medium from flowing back. When the gas medium enters the channel 12 of the valve body 1, the opening torque generated by the combined force of the own weight of the weight part 22 and the gas force on the lower side of the cover plate part 21 is greater than the closing torque generated by the own weight of the cover plate part 21, and the valve disc 2 rotates in the opposite direction to open the channel 12 of the valve body 1, and the opening angle of the valve disc 2 is less than 90°.

[0039] When the valve body 1 is installed horizontally and there is no pressure difference on the left and right sides of the valve disc 2, the valve disc 2 rotates around the pin 3 toward the cover plate 21 under the action of its own gravity, that is, the closing torque generated by the weight of the cover plate 21 of the valve disc 2 is greater than the opening torque generated by the weight of the weight part 22. When the valve disc 2 plane is perpendicular to the axis of the valve body 1 and is immobilized by the annular mouth 131, the valve disc 2 closes the channel 12 of the valve body 1, which can prevent the gas medium from flowing back. When the gas medium enters the channel 12 of the valve body 1, the opening torque generated by the combined force of the own gravity of the weight part 22 and the gas on the left side of the cover plate 21 is greater than the closing torque generated by the own gravity of the cover plate 21, the valve disc 2 rotates in the opposite direction to open the channel 12 of the valve body 1, and the opening angle of the valve disc 2 is less than 90°.

[0040] As another preferred embodiment of the present invention, a groove 221 is provided at the lower end of the weight part 22, and a buffer block 222 is embedded in the groove 221. Figure 3 , Figure 5As shown, a buffer block 222 is provided at the lower end of the weight part 22. When the gas medium passes through the channel 12 with a fast flow rate and a large instantaneous impact force, the gas medium instantaneously impacts the valve flap 2, causing the valve flap 2 to impact against the conical surface 13. The buffer block 222 can effectively buffer the impact force generated during the impact, thereby preventing the valve flap 2 from being damaged by impacting the conical surface 13 head-on when the impact force of the gas medium is large, thereby increasing the service life of the one-way valve.

[0041] As another preferred embodiment of the present invention, the lower end surface of the cover plate portion 21 is provided with an annular groove 211, and a sealing ring 212 is embedded in the annular groove 211. The valve body 1 is provided with a conical surface 13 with a gradually decreasing diameter from bottom to top, and the upper end of the conical surface 13 is formed with an annular opening 131 that cooperates with the cover plate portion 21 to form a sealing surface. The conical surface 13 limits the opening angle of the valve flap 2 to less than 90°. In this embodiment, Figure 3 , Figure 5 The valve body 1 is provided with a conical surface 13 whose diameter gradually decreases from bottom to top, and the upper end of the conical surface 13 is formed with an annular mouth 131 that cooperates with the cover plate part 21 to form a sealing surface. When the valve disc 2 rotates around the pin shaft 3 toward the cover plate part 21 under the action of its own gravity, when the plane of the valve disc 2 is perpendicular to the axis of the valve body 1, the cover plate part 21 and the annular mouth 131 abut against each other to form a sealing surface. The conical surface 13 also plays a guiding role when the gas medium flows through, so that the gas medium applies thrust to the valve disc 2 more concentratedly. The lower end surface of the cover plate part 21 is provided with an annular groove 211, and a sealing ring 212 is embedded in the annular groove 211. When the gas medium refluxes, the valve disc 2 is pressed tightly against the annular mouth 131 through the sealing ring 212, and the sealing performance is good. The conical surface 13 also serves to limit the opening angle of the valve flap 2 to prevent the valve flap 2 from rotating too much when opening. If the rotation angle exceeds 90°, the valve flap 2 cannot return to the horizontal closed position by its own gravity.

[0042] As another preferred embodiment of the present invention, the upper and lower end surfaces of the valve body 1 are uniformly provided with a plurality of mounting holes 15 for mounting bolts along the circumferential direction. The upper and lower end surfaces of the valve body 1 are respectively provided with an annular groove 14, and a sealing ring 141 is embedded in the annular groove 14. In this embodiment, Figure 1As shown, currently, the way of assembling one-way valves and pipelines on the market mostly adopts the clamping type, that is, the two butted pipelines clamp the one-way valve in the middle. The one-way valve is difficult to position during installation, which is very inconvenient to install. The utility model adopts a flange butt-jointed structure, which is convenient for the positioning and installation of the one-way valve. During installation, the bolts are passed through the pipeline, the one-way valve, and the pipeline in sequence and then tightened to complete the installation, which greatly improves the convenience of installation. The upper end face and the lower end face of the valve body 1 are respectively provided with an annular groove 14, and the annular groove 14 is embedded with a sealing ring 141. The sealing performance of the connection between the one-way valve and the pipeline is improved by providing the sealing ring 141.

[0043] As another preferred embodiment of the present invention, the buffer block 222, the sealing ring 212, and the sealing ring 141 are all made of rubber. In this embodiment, the sealing ring 212 and the sealing ring 141 are made of rubber flexible material. The flexible material allows the protective sealing ring 212 to better fit the annular mouth 131, and the sealing ring 141 to better fit the docking pipe, thereby effectively sealing. The buffer block 222 is made of rubber elastic material. The elastic material allows the buffer block 222 to effectively buffer when the weight part 22 hits the conical surface 13, thereby increasing the service life of the one-way valve.

[0044] As another preferred embodiment of the present invention, the outer wall of the valve body 1 is provided with an installation direction mark 16. Figure 1 As shown, the direction mark 16 can prevent the operator from installing the one-way valve in the wrong direction during installation. If the one-way valve is installed in the wrong direction, it cannot prevent the backflow of the gas medium.

[0045] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.

Claims

1. A flip-type one-way valve that is easy to install, comprising a valve body (1) and a valve flap (2), characterized in that: The valve body (1) is provided with a passage (12) for gas circulation inside, the valve flap (2) is rotatably arranged in the passage (12) via a pin shaft (3), one end of the valve flap (2) is provided with a cover plate portion (21) whose diameter matches the inner diameter of the valve body (1), and the other end of the valve flap (2) is provided with a weight portion (22), the weight of the cover plate portion (21) is greater than the weight of the weight portion (22), and the side wall of the valve body (1) is provided with an arch portion (11) that cooperates with the weight portion (22). When the valve body (1) is installed vertically or horizontally, under the action of gravity, the valve flap (2) rotates around the pin shaft (3) toward one side of the cover plate portion (21), and when it rotates to a position perpendicular to the axis of the valve body (1) and is fixed, the valve flap (2) closes the passage (12) of the valve body (1). When under the action of an external force, the valve flap (2) rotates in the opposite direction to open the passage (12) of the valve body (1).

2. The easy-to-install flip-type one-way valve according to claim 1, characterized in that: A groove (221) is provided at the lower end of the weight part (22), and a buffer block (222) is embedded in the groove (221).

3. The easy-to-install flip-type one-way valve according to claim 2, characterized in that: An annular groove (211) is provided on the lower end surface of the cover plate portion (21), and a sealing ring (212) is embedded in the annular groove (211).

4. The easy-to-install flip-type one-way valve according to claim 1, characterized in that: A conical surface (13) with a gradually decreasing diameter from bottom to top is provided inside the lower end of the valve body (1), and an annular opening (131) is formed at the upper end of the conical surface (13) to cooperate with the cover plate portion (21) to form a sealing surface.

5. The easy-to-install flip-type one-way valve according to claim 4, characterized in that: The conical surface (13) limits the opening angle of the valve flap (2) to less than 90°.

6. The easy-to-install flip-type one-way valve according to claim 3, characterized in that: The upper end surface and the lower end surface of the valve body (1) are respectively provided with an annular groove (14), and a sealing ring (141) is embedded in the annular groove (14).

7. The easy-to-install flip-type one-way valve according to claim 6, characterized in that: The buffer block (222), the sealing ring (212), and the sealing ring (141) are all made of rubber material.

8. The easy-to-install flip-type one-way valve according to claim 1, characterized in that: The upper end surface and the lower end surface of the valve body (1) are evenly provided with a plurality of mounting holes (15) for mounting bolts along the circumferential direction.

9. The easy-to-install flip-type one-way valve according to claim 1, characterized in that: The arched portion (11) is provided with a circular hole (111) for the pin shaft (3) to pass through.

10. The easy-to-install flip-type one-way valve according to claim 1, characterized in that: The outer wall of the valve body (1) is provided with an installation direction mark (16).

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