Check valve convenient to overhaul

Abstract

The utility model discloses a check valve convenient to overhaul, and relates to the field of check valves. The check valve convenient to overhaul comprises a valve body and a valve deck, the valve deck is installed on the top of the valve body, the valve body comprises a valve seat, a limiting ring and an elastic piece, and a valve clack is movably arranged in the valve seat and used for switching on and off of a medium in the valve seat; the limiting ring is arranged on the inner wall of the valve seat in a sliding mode, the valve cover abuts against the top of the limiting ring, the top part of the valve clack is arranged on the inner wall of the limiting ring in a sliding mode, a baffle ring is fixedly connected to the inner ring of the bottom of the limiting ring, and the top part of the valve clack abuts against the baffle ring; and the bottom of the elastic piece is clamped at the top of the valve clack. According to the check valve convenient to overhaul, when the check valve goes wrong and needs to be overhauled, only the valve deck needs to be opened, the valve deck does not extrude the limiting ring and the elastic piece any more, at the moment, the valve clack, the limiting ring and the elastic piece can be directly taken down, and then damaged parts can be replaced.

Description

Technical Field

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

[0002] A check valve, also known as a one-way valve, non-return valve, or non-return valve, consists of a disc and a spring inside the valve body. The spring assists in closing the disc. When the medium is flowing normally, the disc remains open, allowing the medium to pass through. However, when the medium is flowing backward, the disc quickly closes to prevent reverse flow.

[0003] The existing valve disc and spring are generally configured as an integral part, and one end of the spring is fixed inside the valve body by bolts. When the check valve is damaged, it may be due to problems with the sealing of the valve disc, or it may be due to aging of the spring and loss of elasticity. During the maintenance process, the valve disc and spring need to be disassembled as a whole, inspected one by one, and then reinstalled, which is relatively cumbersome. Therefore, the present application proposes a check valve that is easy to maintain. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present invention provides a check valve that is easy to repair, which solves the cumbersome problem of having to disassemble the valve disc and spring as a whole, inspect them one by one, and then reinstall them during the repair process.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a check valve that is easy to repair, comprising a valve body and a valve cover, wherein the valve cover is mounted on the top of the valve body, and the valve body comprises:

[0006] A valve seat, wherein a valve disc is movably provided inside the valve seat, and the valve disc is used to open and close the medium inside the valve seat;

[0007] A limiting ring, wherein the limiting ring is slidably disposed on the inner wall of the valve seat, and the valve cover abuts against the top of the limiting ring, the top portion of the valve disc is slidably disposed on the inner wall of the limiting ring, the bottom inner ring of the limiting ring is fixedly connected to a retaining ring, and the top portion of the valve disc abuts against the retaining ring;

[0008] The bottom of the elastic member is clamped on the top of the valve disc, and the top of the elastic member is tightly against the valve cover.

[0009] Preferably, an inlet channel and a discharge channel are provided inside the valve seat, and a communication port is provided between the inlet channel and the discharge channel.

[0010] Preferably, a sealing block is fixedly mounted on the bottom of the valve disc, and the sealing block fits against the inner wall of the communication port.

[0011] Preferably, a slot is provided on the top portion of the valve flap, a clamping block is fixedly mounted on the bottom of the elastic member, and the clamping block is clamped on the inner wall of the slot.

[0012] Preferably, the elastic member includes:

[0013] A protective sleeve, wherein an extension rod is slidably provided inside the protective sleeve, and an end of the extension rod passes through the outer wall of the protective sleeve and extends outward;

[0014] A return spring, wherein both ends of the return spring are fixedly connected to the inner wall of the protective sleeve and the end of the extension rod respectively.

[0015] The utility model discloses a check valve which is easy to maintain, and has the following beneficial effects: during use of the check valve which is easy to maintain, the valve disc, the limit ring and the elastic member are modularly installed inside the valve seat. When a problem occurs in the check valve and maintenance is required, it is only necessary to open the valve cover so that the valve cover no longer squeezes the limit ring and the elastic member. At this time, the valve disc, the limit ring and the elastic member can be directly removed, and the damaged parts can be replaced. During the installation process, the limit ring is directly slid into the inner wall of the valve seat and the valve disc is installed through the limit ring, and the bottom end of the elastic member is clamped to the bottom of the valve disc. Finally, the valve cover is installed, so that the valve cover squeezes and fixes the limit ring and the elastic member, thereby achieving a quick installation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a partial structural diagram of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the valve disc and elastic member of the utility model.

[0020] In the figure: 1. Valve body; 11. Valve seat; 12. Valve disc; 121. Sealing block; 13. Limiting ring; 14. Slot; 15. Block; 16. Elastic member; 161. Protective sleeve; 162. Extension rod; 163. Return spring; 17. Inlet channel; 18. Discharge channel; 19. Connecting port; 2. Valve cover. DETAILED DESCRIPTION

[0021] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0022] The embodiment of the utility model discloses a check valve which is easy to repair.

[0023] According to the attached Figure 1-3 As shown, it includes a valve body 1 and a valve cover 2. The valve cover 2 is installed on the top of the valve body 1. The valve body 1 includes:

[0024] The valve seat 11 has a valve flap 12 provided inside the valve seat 11 for opening and closing the medium inside the valve seat 11;

[0025] The limiting ring 13 is slidably arranged on the inner wall of the valve seat 11, and the valve cover 2 abuts against the top of the limiting ring 13. The top part of the valve disc 12 is slidably arranged on the inner wall of the limiting ring 13. The bottom inner ring of the limiting ring 13 is fixedly connected to a retaining ring, and the top part of the valve disc 12 abuts against the retaining ring;

[0026] The elastic member 16 has its bottom clamped on the top of the valve disc 12 , and its top is tightly against the valve cover 2 .

[0027] During use, the valve disc 12, the limiting ring 13 and the elastic member 16 are modularly installed inside the valve seat 11. When the check valve has a problem and needs to be repaired, it is only necessary to open the valve cover 2 so that the valve cover 2 no longer squeezes the limiting ring 13 and the elastic member 16. At this time, the valve disc 12, the limiting ring 13 and the elastic member 16 can be directly removed, and then the damaged parts can be replaced. During the installation process, the limiting ring 13 is directly slid into the inner wall of the valve seat 11 and then the valve disc 12 is installed through the limiting ring 13, and the bottom end of the elastic member 16 is clamped to the bottom of the valve disc 12. Finally, the valve cover 2 is installed, so that the valve cover 2 squeezes and fixes the limiting ring 13 and the elastic member 16, thereby achieving the effect of quick installation.

[0028] Furthermore, an inlet channel 17 and a discharge channel 18 are defined inside the valve seat 11 , and a communication port 19 is defined between the inlet channel 17 and the discharge channel 18 .

[0029] Furthermore, a sealing block 121 is fixedly mounted on the bottom of the valve disc 12 , and the sealing block 121 fits against the inner wall of the communication opening 19 .

[0030] When the valve disc 12 moves downward, the sealing block 121 fits against the inner wall of the communication opening 19 , thereby achieving a sealing effect.

[0031] Furthermore, a clamping groove 14 is formed on the top portion of the valve disc 12 , and a clamping block 15 is fixedly mounted on the bottom of the elastic member 16 , and the clamping block 15 is clamped on the inner wall of the clamping groove 14 .

[0032] By providing the card slot 14 and the card block 15, when the card block 15 is engaged with the inner wall of the card slot 14, it can play a preliminary limiting role on the elastic member 16. When the top of the elastic member 16 is tightly against the valve cover 2, it can further fix the elastic member 16.

[0033] Specifically disclosed, the elastic member 16 includes:

[0034] A protective sleeve 161, wherein an extension rod 162 is slidably disposed inside the protective sleeve 161, and an end of the extension rod 162 passes through the outer wall of the protective sleeve 161 and extends outward;

[0035] The return spring 163 has two ends fixedly connected to the inner wall of the protection sleeve 161 and the end of the extension rod 162 respectively.

[0036] By providing the protective sleeve 161 , the extension rod 162 and the return spring 163 , the elastic member 16 can be modularized as a whole, so that the installation and disassembly of the elastic member 16 as a whole can be facilitated.

[0037] During use, the valve disc 12, the limiting ring 13 and the elastic member 16 are modularly installed inside the valve seat 11. When the check valve has a problem and needs to be repaired, it is only necessary to open the valve cover 2 so that the valve cover 2 no longer squeezes the limiting ring 13 and the elastic member 16. At this time, the valve disc 12, the limiting ring 13 and the elastic member 16 can be directly removed, and then the damaged parts can be replaced. During the installation process, the limiting ring 13 is directly slid into the inner wall of the valve seat 11 and then the valve disc 12 is installed through the limiting ring 13, and the bottom end of the elastic member 16 is clamped to the bottom of the valve disc 12. Finally, the valve cover 2 is installed, so that the valve cover 2 squeezes and fixes the limiting ring 13 and the elastic member 16, thereby achieving the effect of quick installation.

[0038] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A check valve that is easy to repair, comprising a valve body (1) and a valve cover (2), wherein the valve cover (2) is mounted on the top of the valve body (1), and is characterized in that: The valve body (1) comprises: A valve seat (11), wherein a valve flap (12) is movably provided inside the valve seat (11), and the valve flap (12) is used to open and close the medium inside the valve seat (11); A limiting ring (13), wherein the limiting ring (13) is slidably arranged on the inner wall of the valve seat (11), and the valve cover (2) abuts against the top of the limiting ring (13), and the top part of the valve disc (12) is slidably arranged on the inner wall of the limiting ring (13), and the bottom inner ring of the limiting ring (13) is fixedly connected to a retaining ring, and the top part of the valve disc (12) abuts against the retaining ring; An elastic member (16), wherein the bottom of the elastic member (16) is clamped on the top of the valve flap (12), and the top of the elastic member (16) is tightly against the valve cover (2).

2. A check valve that is easy to repair according to claim 1, characterized in that: An inlet channel (17) and a discharge channel (18) are provided inside the valve seat (11), and a communication port (19) is provided between the inlet channel (17) and the discharge channel (18).

3. A check valve that is easy to repair according to claim 2, characterized in that: A sealing block (121) is fixedly mounted on the bottom of the valve flap (12), and the sealing block (121) is in contact with the inner wall of the communication port (19).

4. A check valve that is easy to repair according to claim 1, characterized in that: A clamping groove (14) is provided on the top portion of the valve flap (12), a clamping block (15) is fixedly mounted on the bottom of the elastic member (16), and the clamping block (15) is clamped on the inner wall of the clamping groove (14).

5. A check valve that is easy to repair according to claim 1, characterized in that: The elastic member (16) comprises: A protective sleeve (161), wherein an extension rod (162) is slidably provided inside the protective sleeve (161), and an end of the extension rod (162) passes through the outer wall of the protective sleeve (161) and extends outward; A return spring (163), wherein both ends of the return spring (163) are fixedly connected to the inner wall of the protective sleeve (161) and the end of the extension rod (162) respectively.

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