Anti-backflow swing check valve

Abstract

The utility model relates to the field of check valve devices, and discloses an anti-backflow swing check valve which comprises a valve device and a one-way device, the one-way device is arranged at the front end of the valve device, the valve device comprises a first shell, the bottom end of the first shell is fixedly connected with a drainage pipe, the top end of the first shell is fixedly connected with a limiting block, and the limiting block is fixedly connected with the drainage pipe. The one-way device comprises a second shell, the rear end of the second shell is in threaded connection with a rotating block, the middle of the rotating block is fixedly connected with a spring, the inner side wall of the spring is slidably connected with a sliding block, the front end of the second shell is fixedly connected with a water inlet, and the second shell is fixedly connected with the front end of the first shell. According to the anti-backflow swing check valve, the valve device is arranged, so that the overall application range of the device is effectively widened, the one-way device is arranged, it is effectively guaranteed that a sealing state is formed between the sliding block and the water inlet, and liquid leakage is further avoided.

Description

Technical Field

[0001] The utility model relates to the field of check valve devices, in particular to an anti-backflow swing check valve. Background Art

[0002] A swing check valve, also known as a one-way valve or non-return valve, prevents backflow of media in a pipeline. A check valve is a valve whose opening and closing mechanism is activated by the force of the media flow or manually to prevent backflow. Check valves are automatic valves primarily used in pipelines with unidirectional flow, restricting flow in one direction to prevent accidents.

[0003] Although the existing technology uses a check valve to prevent the backflow of the medium in the pipeline, the device as a whole can only be automatically controlled during use, resulting in a lack of manual control of the valve, making the overall use of the device low in precision. Therefore, those skilled in the art provide an anti-backflow swing check valve to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an anti-backflow swing check valve, which provides an anti-backflow swing check valve that effectively improves the overall applicability of the device by setting a valve device, and effectively ensures that a sealing state is formed between the slider and the water inlet by setting a one-way device, thereby further avoiding liquid leakage.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an anti-backflow swing check valve, comprising a valve device and a one-way device, wherein the one-way device is arranged at the front end of the valve device, the valve device comprising a first housing, the bottom end of the first housing being fixedly connected to a drain pipe, the top end of the first housing being fixedly connected to a limit block, the inner side wall of the limit block being threadedly connected to a screw, the top end of the screw being fixedly connected to a rotary disk, and the bottom end of the screw being fixedly connected to a sealing plug;

[0006] Through the above technical solution, by setting up a valve device, a limit block is set at the top of the first shell, and a screw is threadedly connected to the inner wall of the limit block. By rotating the turntable, the sealing plug can be moved to the top of the drain pipe to achieve sealing of the entire device, effectively improve the overall use range of the device, and effectively avoid leakage.

[0007] Furthermore, the one-way device includes a second shell, the rear end of the second shell is threadedly connected to a rotating block, the middle of the rotating block is fixedly connected to a spring, the front end of the spring is fixedly connected to a slider, the front end of the second shell is fixedly connected to a water inlet, and the second shell is fixedly connected to the front end of the first shell;

[0008] Through the above technical solution, by setting a one-way device, a rotating block is threadedly connected to one side of the second shell, a spring is provided on one side of the rotating block, and a slider is provided at the other end of the spring. The slider is used to form a seal on the water inlet, which can effectively prevent liquid backflow. At the same time, the spring is used to apply elastic force to the slider, which can effectively ensure that a sealing state is formed between the slider and the water inlet, further preventing liquid leakage.

[0009] Furthermore, the second shell is communicated with the inner side of the first shell, and the second shell and the first shell are arranged perpendicular to each other;

[0010] Through the above technical solution, the devices are effectively connected.

[0011] Furthermore, the drain pipe is in communication with the interior of the first shell;

[0012] Through the above technical solution, the liquid is effectively discharged.

[0013] Furthermore, the bottom end of the sealing plug is adapted to fit the top end of the inner wall of the drain pipe;

[0014] Through the above technical solution, the device is effectively shut down.

[0015] Furthermore, the water inlet is communicated with the interior of the second shell;

[0016] Through the above technical solution, the device is effectively connected and installed.

[0017] Furthermore, the slider and the inner side wall of the water inlet are adapted to each other;

[0018] Through the above technical solution, liquid backflow can be effectively avoided.

[0019] Furthermore, the other end of the spring is fixedly connected to one side of the slider;

[0020] The above technical solution can effectively avoid liquid leakage.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, a valve device is provided, a limit block is provided at the top of the first shell, and a screw is threadedly connected to the inner wall of the limit block. By rotating the turntable, the sealing plug can be moved to the top of the drain pipe to achieve sealing of the entire device, effectively improve the overall use range of the device, and effectively avoid leakage.

[0023] 2. In the present invention, a one-way device is provided, a rotating block is threadedly connected to one side of the second shell, a spring is provided on one side of the rotating block, and a slider is provided at the other end of the spring. The slider is used to form a seal on the water inlet, which can effectively prevent liquid backflow. At the same time, the spring is used to apply elastic force to the slider, which can effectively ensure that a sealing state is formed between the slider and the water inlet, further preventing liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of an anti-backflow swing check valve proposed by the present invention;

[0025] Figure 2 This is a front view of an anti-backflow swing check valve proposed by the utility model;

[0026] Figure 3 This is a sectional perspective view of an anti-backflow swing check valve proposed by the utility model;

[0027] Figure 4 The utility model is a cross-sectional view of an anti-backflow swing check valve.

[0028] Legend:

[0029] 1. Valve device; 101. First housing; 102. Turntable; 103. Drain pipe; 104. Screw; 105. Limit block; 106. Sealing plug; 2. One-way device; 201. Second housing; 202. Water inlet; 203. Rotating block; 204. Spring; 205. Slider. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Reference Figure 1-4, the utility model provides an embodiment: an anti-backflow swing check valve, including a valve device 1 and a one-way device 2, the one-way device 2 is arranged at the front end of the valve device 1, the valve device 1 includes a first shell 101, the bottom end of the first shell 101 is fixedly connected to a drain pipe 103, the top end of the first shell 101 is fixedly connected to a limiting block 105, the inner side wall of the limiting block 105 is threadedly connected to a screw 104, the top end of the screw 104 is fixedly connected to a turntable 102, and the bottom end of the screw 104 is fixedly connected to a sealing plug 106. By setting the valve device 1, a limiting block 105 is set at the top of the first shell 101, and the screw 104 is threadedly connected to the inner side wall of the limiting block 105. By rotating the turntable 102, the sealing plug 106 can be moved to the top end of the drain pipe 103, thereby realizing the sealing of the entire device, effectively improving the overall use range of the device, and effectively avoiding leakage.

[0032] The one-way device 2 includes a second shell 201, a rotating block 203 is threadedly connected to the rear end of the second shell 201, a spring 204 is fixedly connected to the middle of the rotating block 203, a slider 205 is fixedly connected to the front end of the spring 204, and the front end of the second shell 201 is fixedly connected to the water inlet 202. The second shell 201 is fixedly connected to the front end of the first shell 101. By setting the one-way device 2, the rotating block 203 is threadedly connected to one side of the second shell 201, a spring 204 is provided on one side of the rotating block 203, and a slider 205 is provided at the other end of the spring 204. The slider 205 is used to form a seal with the water inlet 202, which can effectively prevent liquid reflux. At the same time, the spring 204 is used to apply elastic force to the slider 205, which can effectively ensure that a sealed state is formed between the slider 205 and the water inlet 202, further preventing liquid leakage.

[0033] The second shell 201 is connected to the inner side of the first shell 101, and the second shell 201 and the first shell 101 are arranged perpendicular to each other, the drain pipe 103 is connected to the inside of the first shell 101, the bottom end of the sealing plug 106 is adapted to the top of the inner wall of the drain pipe 103, the water inlet 202 is connected to the inside of the second shell 201, the slider 205 is adapted to the inner wall of the water inlet 202, and the other end of the spring 204 is fixedly connected to one side of the slider 205.

[0034] Working principle: By setting up a valve device 1, a limit block 105 is set at the top of the first shell 101, and a screw 104 is threadedly connected to the inner wall of the limit block 105. By rotating the turntable 102, the sealing plug 106 can be moved to the top of the drain pipe 103 to achieve sealing of the entire device, effectively improve the overall use range of the device, and effectively avoid leakage. By setting up a one-way device 2, a rotating block 203 is threadedly connected to one side of the second shell 201, a spring 204 is set on one side of the rotating block 203, and a slider 205 is set at the other end of the spring 204. The slider 205 is used to form a seal on the water inlet 202, which can effectively prevent liquid reflux. At the same time, the spring 204 is used to apply elastic force to the slider 205, which can effectively ensure that a sealing state is formed between the slider 205 and the water inlet 202, further avoiding liquid leakage.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A backflow prevention swing check valve, comprising a valve device (1) and a one-way device (2), wherein the one-way device (2) is arranged at the front end of the valve device (1), and is characterized in that: The valve device (1) comprises a first shell (101), the bottom end of the first shell (101) is fixedly connected to a drain pipe (103), the top end of the first shell (101) is fixedly connected to a limit block (105), the inner side wall of the limit block (105) is threadedly connected to a screw rod (104), the top end of the screw rod (104) is fixedly connected to a rotary disk (102), and the bottom end of the screw rod (104) is fixedly connected to a sealing plug (106).

2. The anti-backflow swing check valve according to claim 1, characterized in that: The one-way device (2) comprises a second housing (201), the rear end of the second housing (201) being threadedly connected to a rotating block (203), the middle of the rotating block (203) being fixedly connected to a spring (204), the front end of the spring (204) being fixedly connected to a slider (205), the front end of the second housing (201) being fixedly connected to a water inlet (202), and the second housing (201) being fixedly connected to the front end of the first housing (101).

3. The anti-backflow swing check valve according to claim 2, characterized in that: The second shell (201) is communicated with the inner side of the first shell (101), and the second shell (201) and the first shell (101) are arranged perpendicular to each other.

4. The anti-backflow swing check valve according to claim 1, characterized in that: The drain pipe (103) is in communication with the interior of the first shell (101).

5. The anti-backflow swing check valve according to claim 1, characterized in that: The bottom end of the sealing plug (106) is adapted to the top end of the inner wall of the drain pipe (103).

6. The anti-backflow swing check valve according to claim 2, characterized in that: The water inlet (202) is in communication with the interior of the second shell (201).

7. The anti-backflow swing check valve according to claim 2, characterized in that: The slider (205) is adapted to the inner side wall of the water inlet (202).

8. The anti-backflow swing check valve according to claim 2, characterized in that: The other end of the spring (204) is fixedly connected to one side of the slider (205).

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