Check valve

Abstract

The utility model relates to the technical field of check valves, and discloses a check valve which comprises a mounting base, and a fixing mechanism is arranged on the mounting base. According to the pipeline connecting device, pipelines needing to be connected are placed in the containing holes in the fixing frame, the bottom end of the screw rod is made to move downwards by rotating the screw rod, and therefore the second fixing clamping block is driven to move downwards, the limiting sliding block is driven to move on the inner wall of the limiting groove, and the limiting purpose is achieved; the moving stability of a second fixing clamping block is guaranteed, a pipeline can be clamped and fixed under the clamping effect of the first fixing clamping block and the second fixing clamping block so that subsequent connection with a valve body can be facilitated, a hydraulic rod fixedly installed on the inner wall of a groove is started so that an inner rod of the hydraulic rod can push a lifting block to move, and therefore the pipeline can be stably fixed. And the lifting block drives the valve body to lift on the inner wall of the groove, so that the height of the valve body can be adjusted, and the valve body can be better connected with a pipeline.

Description

Technical Field

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

[0002] A check valve is a valve whose opening and closing parts are circular discs and which rely on their own weight and medium pressure to produce movement to block the backflow of the medium. It belongs to the category of automatic valves, also known as non-return valves, one-way valves, reflux valves or isolation valves. The disc movement modes are divided into lifting type and swing type. The lifting check valve is similar to the stop valve in structure, only lacking the valve stem that drives the disc. The medium enters from the inlet end (the swing check valve has a disc that is tilted and can rotate around the axis, and its working principle is similar to that of the lifting check valve. The check valve is often used as a bottom valve of a pumping device to prevent the backflow of water. The check valve is used in combination with the stop valve to play a role of safety isolation. The disadvantage is that the resistance is large and the sealing is poor when closed.

[0003] According to the Chinese patent publication number CN220060651U, the utility model discloses a check valve, specifically related to the field of gas transmission, including: a valve cover, a check valve device is installed at the lower end of the valve cover, the check valve device includes: a circulation component and a check component, the check component is detachably installed inside the circulation component, the upper end of the circulation component is detachably installed at the lower end of the valve cover, the circulation component includes: a valve body, a first valve flap and a bolt, and a lower valve body is installed at the rear end of the first valve flap. In the check valve of the utility model, after the baffle completes the fitting work, if the gas flows back from the second valve flap, the resistance on the other side of the baffle can be increased. After the resistance on the other side of the baffle is enhanced, the baffle and the internal flow port of the first valve flap are more closely fitted. After the baffle and the internal flow port of the first valve flap are more closely fitted, the problem of gas backflow in the lower valve body is effectively prevented. The installation and disassembly of the check component are simple and convenient, which reduces the difficulty of its replacement and use, thereby further enhancing the practicality and convenience of use of the entire device.

[0004] However, in the existing technology, when workers install the check valve between two suspended pipes, since most of them do not have a fixed support structure, they usually support it by manpower, which makes the installation time long, time-consuming and labor-intensive, and is not convenient for better installation and connection with the pipe. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a check valve.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a check valve includes a mounting base, a fixing mechanism is arranged on the mounting base, the fixing mechanism includes a fixing frame, the fixing frame is fixedly mounted on the top of the mounting base, a first fixing clamp is fixedly mounted on the bottom of the inner wall of the fixing frame, a screw is threadedly connected to the top of the fixing frame, limiting grooves are provided on both sides of the inner wall of the fixing frame, a limiting slider is slidably connected to the inner wall of the limiting groove, a second fixing clamp is fixedly mounted on one side of the limiting slider, a placement hole is formed between the first fixing clamp and the second fixing clamp, and the bottom end of the screw is rotatably connected to the top of the second fixing clamp.

[0007] Preferably, the mounting base is further provided with an adjustment mechanism, the adjustment mechanism comprising a groove, the groove being provided at the top of the mounting base. According to this preference, by starting a hydraulic rod fixedly installed on the inner wall of the groove, the inner rod of the hydraulic rod pushes the lifting block to move.

[0008] Preferably, the adjustment mechanism further comprises a hydraulic rod, the hydraulic rod is fixedly mounted on the inner wall of the groove, a lifting block is fixedly mounted on the inner rod of the hydraulic rod, and the lifting block is slidably connected to the inner wall of the groove. According to this preference, by starting the hydraulic rod fixedly mounted on the inner wall of the groove, the inner rod of the hydraulic rod pushes the lifting block to move.

[0009] Preferably, a valve body is also provided on the mounting base, and the valve body is fixedly mounted on the lifting block. According to this preference, the lifting block drives the valve body to be lifted and lowered on the inner wall of the groove, so that the height of the valve body can be adjusted.

[0010] Preferably, a valve cover is provided on the top of the valve body, and the valve cover is mounted on the top of the valve body by bolts. According to this preference, the valve cover and the valve body are fixed by bolts, so that the valve cover is easy to open, thereby facilitating the maintenance of the valve body.

[0011] Preferably, the two ends of the valve body are equipped with connecting plates by bolts, and the connecting plates are equipped with a filter screen. According to this preference, the connecting plate and the valve body are also connected by a bolt assembly, so as to achieve the purpose of easy installation and disassembly, so as to facilitate subsequent cleaning or replacement of the filter screen.

[0012] Compared with the prior art, the utility model provides a check valve with the following beneficial effects:

[0013] 1. This kind of check valve, by placing the pipe to be connected inside the placement hole on the fixed frame, by rotating the screw, the bottom end of the screw moves downward, thereby driving the second fixed clamp block to move downward, so that the limiting slider is driven to move on the inner wall of the limiting groove, thereby achieving the purpose of limiting and ensuring the stability of the movement of the second fixed clamp block. The pipe can be clamped and fixed by the clamping action of the first fixed clamp block and the second fixed clamp block, so as to facilitate the subsequent connection with the valve body. By starting the hydraulic rod fixedly installed on the inner wall of the groove, the inner rod of the hydraulic rod pushes the lifting block to move, and the lifting block drives the valve body to rise and fall on the inner wall of the groove, so that the height of the valve body can be adjusted, and then it can be better connected with the pipe.

[0014] 2. In this check valve, the valve cover and the valve body are fixed with bolts, so that the valve cover is easy to open, thereby facilitating the maintenance of the valve body. By setting a connecting plate and a filter, the filter can filter impurities in the water to prevent impurities from adhering to the inside of the valve body. The connecting plate and the valve body are also connected with a bolt assembly, thereby achieving the purpose of easy installation and disassembly, so as to facilitate subsequent cleaning or replacement of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the fixing mechanism structure of the utility model;

[0018] Figure 3 It is a schematic diagram of the structure of the regulating mechanism of the utility model.

[0019] In the figure: 1. mounting base; 21. fixing mechanism; 211. fixing frame; 212. first fixing clamp; 213. screw; 214. second fixing clamp; 215. limiting groove; 216. limiting slider; 31. adjusting mechanism; 311. groove; 312. hydraulic rod; 313. lifting block; 4. valve body; 5. valve cover; 6. connecting plate; 7. filter. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Example 1

[0022] like Figure 1-3 As shown, the utility model provides a check valve including a mounting base 1, a fixing mechanism 21 is arranged on the mounting base 1, the fixing mechanism 21 includes a fixing frame 211, the fixing frame 211 is fixedly mounted on the top of the mounting base 1, a first fixing clamp 212 is fixedly mounted on the bottom of the inner wall of the fixing frame 211, a screw 213 is threadedly connected to the top of the fixing frame 211, limiting grooves 215 are arranged on both sides of the inner wall of the fixing frame 211, and the inner wall of the limiting groove 215 is slidably connected to the limiting slider 216, and a second fixing clamp 212 is fixedly mounted on one side of the limiting slider 216. Block 214, a placement hole is formed between the first fixed clamp block 212 and the second fixed clamp block 214, the bottom end of the screw rod 213 is rotatably connected to the top of the second fixed clamp block 214, and an adjusting mechanism 31 is also provided on the mounting base 1, the adjusting mechanism 31 includes a groove 311, the groove 311 is opened on the top of the mounting base 1, the adjusting mechanism 31 also includes a hydraulic rod 312, the hydraulic rod 312 is fixedly installed on the inner wall of the groove 311, and a lifting block 313 is fixedly installed on the inner rod of the hydraulic rod 312, and the lifting block 313 is slidably connected to the inner wall of the groove 311.

[0023] In this embodiment, the pipe to be connected is placed inside the placement hole on the fixed frame 211, and the screw rod 213 is rotated to move the bottom end of the screw rod 213 downward, thereby driving the second fixed clamp block 214 to move downward, so that the limiting slider 216 is driven to move on the inner wall of the limiting groove 215, thereby achieving the purpose of limiting and ensuring the stability of the movement of the second fixed clamp block 214. The pipe can be clamped and fixed by the clamping action of the first fixed clamp block 212 and the second fixed clamp block 214 to facilitate subsequent connection with the valve body 4. By starting the hydraulic rod 312 fixedly installed on the inner wall of the groove 311, the inner rod of the hydraulic rod 312 pushes the lifting block 313 to move, and the lifting block 313 drives the valve body 4 to rise and fall on the inner wall of the groove 311, so that the height of the valve body 4 can be adjusted, and then better connected to the pipe.

[0024] Example 2

[0025] like Figure 1-3 As shown, on the basis of Example 1, the utility model provides a technical solution: preferably, a valve body 4 is also provided on the mounting base 1, the valve body 4 is fixedly mounted on the lifting block 313, a valve cover 5 is provided on the top of the valve body 4, the valve cover 5 is mounted on the top of the valve body 4 by bolts, connecting plates 6 are mounted on both ends of the valve body 4 by bolts, and a filter screen 7 is installed on the connecting plate 6.

[0026] In this embodiment, the valve cover 5 and the valve body 4 are fixed with bolts, so that the valve cover 5 is easy to open, thereby facilitating the maintenance of the valve body 4. By providing a connecting plate 6 and a filter screen 7, the filter screen 7 can filter impurities in the water to prevent the impurities from adhering to the inside of the valve body 4. The connecting plate 6 and the valve body 4 are also connected with a bolt assembly, thereby achieving the purpose of easy installation and disassembly, so as to facilitate subsequent cleaning or replacement of the filter screen 7.

[0027] The following is a detailed description of the working principle of this check valve.

[0028] like Figure 1-3 As shown, when in use, the pipe to be connected is placed inside the placement hole on the fixing frame 211, and the screw rod 213 is rotated to move the bottom end of the screw rod 213 downward, thereby driving the second fixing clamp 214 to move downward, so that the limiting slider 216 is driven to move on the inner wall of the limiting groove 215, thereby achieving the purpose of limiting and ensuring the stability of the movement of the second fixing clamp 214. The pipe can be clamped and fixed by the clamping action of the first fixing clamp 212 and the second fixing clamp 214, so as to facilitate the subsequent connection with the valve body 4, and the hydraulic rod 31 fixedly installed on the inner wall of the starting groove 311 is started. 2, so that the inner rod of the hydraulic rod 312 pushes the lifting block 313 to move, and the lifting block 313 drives the valve body 4 to move up and down on the inner wall of the groove 311, so that the height of the valve body 4 can be adjusted, and then it can be better connected with the pipeline. The valve cover 5 and the valve body 4 are fixed with bolts, which makes it easy to open the valve cover 5, so as to facilitate the maintenance of the valve body 4. By setting the connecting plate 6 and the filter screen 7, the filter screen 7 can filter impurities in the water to prevent impurities from adhering to the inside of the valve body 4. The connecting plate 6 and the valve body 4 are also connected with the bolt assembly, so as to achieve the purpose of easy installation and disassembly, so as to facilitate subsequent cleaning or replacement of the filter screen 7.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A check valve, comprising a mounting base (1), characterized in that: The mounting base (1) is provided with a fixing mechanism (21), the fixing mechanism (21) comprising a fixing frame (211), the fixing frame (211) being fixedly mounted on the top of the mounting base (1), a first fixing clamp (212) being fixedly mounted on the bottom of the inner wall of the fixing frame (211), a screw rod (213) being threadedly connected to the top of the fixing frame (211), limiting grooves (215) being provided on both sides of the inner wall of the fixing frame (211), a limiting slider (216) being slidably connected to the inner wall of the limiting groove (215), a second fixing clamp (214) being fixedly mounted on one side of the limiting slider (216), a placement hole being formed between the first fixing clamp (212) and the second fixing clamp (214), and the bottom end of the screw rod (213) being rotatably connected to the top of the second fixing clamp (214).

2. A check valve according to claim 1, characterized in that: The mounting base (1) is also provided with an adjustment mechanism (31), the adjustment mechanism (31) comprising a groove (311), and the groove (311) is opened on the top of the mounting base (1).

3. A check valve according to claim 2, characterized in that: The adjustment mechanism (31) further comprises a hydraulic rod (312), wherein the hydraulic rod (312) is fixedly mounted on the inner wall of the groove (311), and a lifting block (313) is fixedly mounted on the inner rod of the hydraulic rod (312), and the lifting block (313) is slidably connected to the inner wall of the groove (311).

4. A check valve according to claim 1, characterized in that: A valve body (4) is also provided on the mounting base (1), and the valve body (4) is fixedly mounted on the lifting block (313).

5. A check valve according to claim 4, characterized in that: A valve cover (5) is arranged on the top of the valve body (4), and the valve cover (5) is mounted on the top of the valve body (4) by means of bolts.

6. A check valve according to claim 4, characterized in that: Connecting plates (6) are installed at both ends of the valve body (4) via bolts, and a filter screen (7) is installed on the connecting plate (6).

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