Stop valve capable of conveniently adjusting flow

Abstract

The utility model discloses a stop valve convenient to adjust flow, which belongs to the technical field of stop valves, and comprises a valve body, the valve body is fixedly connected with a valve cover through four fixing nuts, a valve rod is arranged in the valve body, the outer wall of the valve rod is fixedly connected with a plurality of connecting frames, and the connecting frames are fixedly connected with the valve cover. One ends of the connecting frames are connected with the inner wall of the same handle, and first limiting holes are formed in the connecting frames. According to the stop valve convenient to adjust the flow, the connecting frame, a handle, a first limiting hole, second limiting holes, a limiting rod, a tray and a spring are arranged, when the stop valve is used, the rotating angle of the handle can be adjusted through the second limiting holes in different positions, and therefore the lifting amount of a gate plate is adjusted; and after adjustment is completed, the handle can be fixed, and the situation that due to the fact that friction between the handle and an external object is relieved, the handle rotates, and then the stop valve is automatically opened and closed is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of stop valves, in particular to a stop valve which is convenient for adjusting flow. Background Art

[0002] The stop valve is a tool that relies on the pressure of the valve stem to make the valve disc sealing surface fit closely with the valve seat sealing surface to prevent the flow of medium. It is a forced sealing valve. In the power plant pipeline system, it is mainly installed on high-temperature and high-pressure steam and water pipelines with a diameter of ≤100mm. The stop valve consists of a valve body, a valve cover, a valve cover sealing gasket, a valve stem, etc. The stop valve is divided into four types according to the channel direction: straight-through stop valve, direct-current stop valve, angle stop valve, and plunger stop valve.

[0003] A Chinese patent discloses a stop valve that is easy to adjust the flow rate. The announcement number is CN216242419U. The article proposes "including a valve body, a first connecting block and a second connecting block are fixedly provided at both ends of the valve body, a connecting rod is movably provided inside the valve body, a sealing block is fixedly provided at the bottom end of the connecting rod, and an adjustment block is movably provided inside the valve body." When using the existing stop valve, it is not convenient to adjust its flow rate, and after the stop valve is opened or closed, the handle exposed to the outside is prone to friction contact with external objects, causing the handle to rotate, which in turn causes the stop valve to automatically open and close, posing certain safety hazards. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a stop valve that is easy to adjust the flow rate, which solves the problem that the existing stop valve is inconvenient to adjust its flow rate when in use, and after the stop valve is opened or closed, the handle exposed to the outside is prone to friction contact with external objects, causing the handle to rotate, and then causing the stop valve to automatically open and close, which poses certain safety hazards.

[0005] The technical solution of the utility model is as follows: a stop valve which is convenient for adjusting flow rate, comprises a valve body, the valve body is fixedly connected to the valve cover by four fixing nuts, a valve stem is arranged in the valve body, a plurality of connecting frames are fixedly connected to the outer wall of the valve stem, one end of the plurality of connecting frames is connected to the inner wall of the same handle, a first limiting hole is opened in the connecting frame, a plurality of second limiting holes are opened on the top of the valve cover, the position of the first limiting hole corresponds to the position of the second limiting hole, the same limiting rod is inserted in the corresponding first limiting hole and the second limiting hole, a tray is fixedly connected to the outer wall of the limiting rod, the top of the tray is connected to the bottom end of the spring, and the top end of the spring is connected to the bottom of the connecting frame.

[0006] As a further solution of the utility model: sealing grooves are provided on the opposite surfaces of the valve body and the valve cover, and the same sealing ring is clamped in the two sealing grooves.

[0007] As a further solution of the utility model: the sealing ring is a chloroprene rubber sealing ring, and a sealing filler is filled between the valve cover and the valve stem.

[0008] As a further solution of the utility model: a gate is arranged in the valve body, a gate nut is fixedly connected to the top of the gate, the inner wall of the gate nut is connected to the outer wall of the valve stem, and the shape of the gate nut is adapted to the shape of the valve stem.

[0009] As a further solution of the utility model: a mounting groove is provided in the valve body, and the valve body is fixedly connected to the filter screen through the mounting groove.

[0010] As a further solution of the utility model: the top of the valve cover is connected to the bottom of the bearing seat, a sealed bearing is arranged in the bearing seat, and the bearing seat is mutually clamped with the valve stem through the sealed bearing.

[0011] As a further solution of the utility model: the outer wall of the valve body is provided with an anti-corrosion coating, and the valve body is made of stainless steel material.

[0012] As a further solution of the utility model: the shape of the gate plate is matched with the shape of the pipe inside the valve body, and the shape of the first limiting hole and the shape of the second limiting hole are matched with the shape of the limiting rod.

[0013] The working principle and beneficial effects of the utility model are:

[0014] 1. The stop valve which is convenient for adjusting the flow rate is provided with a connecting frame, a handle, a first limiting hole, a second limiting hole, a limiting rod, a tray and a spring. When in use, the limiting rod is pulled upward to make the limiting rod disengage from the second limiting hole on the top of the valve cover, thereby releasing the restriction of the limiting rod and the second limiting hole. At the same time, when the limiting rod moves upward, the tray is driven to move upward, thereby squeezing the spring to shrink it. Then, the handle is turned, and the handle drives the connecting frame and the valve stem to rotate. The gate can be driven to move upward through the valve stem and the gate nut, thereby opening the stop valve. The height of the gate is controlled by turning the angle of the handle. , so that the diameter of the cover stop valve can adjust the flow rate. At the same time, after the handle is rotated, the limit rod is loosened, so that the limit rod is inserted into the corresponding second limit hole for fixation under the action of the spring, so that when the stop valve is in use, the second limit hole at different positions can be used to adjust the rotation angle of the handle, thereby adjusting the lifting amount of the gate plate, thereby facilitating the adjustment of the flow rate of the stop valve. After the adjustment is completed, the handle can be fixed to avoid friction between the handle and external objects, which causes the handle to rotate, thereby causing the stop valve to open and close automatically.

[0015] 2. The stop valve, which is easy to adjust the flow rate, can filter impurities in the water flow by setting a filter net, so as to prevent the impurities from adhering to the inner wall of the valve body and causing the stop valve to be blocked. The sealed bearing can reduce the friction generated when the valve stem rotates, and avoid serious wear of the valve stem after multiple rotations. On the other hand, it can ensure the sealing during rotation and prevent the external airflow from entering through the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a schematic diagram of the three-dimensional cross-sectional structure of the valve body of the utility model;

[0019] Figure 3 It is a three-dimensional structural diagram of the handle of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the spring of the utility model from the front;

[0021] Figure 5 This is a schematic diagram of the structure of the explosion of the sealing ring of the utility model;

[0022] In the figure: 1 valve body, 2 fixing nut, 3 valve cover, 4 valve stem, 5 connecting frame, 6 handle, 7 first limiting hole, 8 second limiting hole, 9 limiting rod, 10 tray, 11 spring, 12 sealing groove, 13 sealing ring, 14 gate, 15 gate nut, 16 filter screen, 17 bearing seat, 18 sealed bearing. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-5As shown, the utility model provides a technical solution: a stop valve for adjusting flow, comprising a valve body 1, the valve body 1 is fixedly connected to a valve cover 3 through four fixing nuts 2, a valve stem 4 is arranged in the valve body 1, a plurality of connecting frames 5 are fixedly connected to the outer wall of the valve stem 4, one end of the plurality of connecting frames 5 is connected to the inner wall of the same handle 6, a first limiting hole 7 is opened in the connecting frame 5, a plurality of second limiting holes 8 are opened on the top of the valve cover 3, the position of the first limiting hole 7 corresponds to the position of the second limiting hole 8, and the corresponding first limiting hole 7 and the second limiting hole 8 are inserted The same limiting rod 9, the outer wall of the limiting rod 9 is fixedly connected with a tray 10, the top of the tray 10 is connected to the bottom end of the spring 11, the top of the spring 11 is connected to the bottom of the connecting frame 5, the valve body 1 and the valve cover 3 are provided with sealing grooves 12 on the opposite sides, and the same sealing ring 13 is clamped in the two sealing grooves 12. By setting the sealing ring 13, the sealing ring 13 can ensure the sealing of the connection between the valve body 1 and the valve cover 3, and ensure the sealing of the stop valve. The sealing ring 13 is a chloroprene rubber sealing ring 13, and the valve cover 3 and the valve stem 4 are filled with sealing fillers. The valve body 1 is provided with The gate 14 is fixedly connected with a gate nut 15 at the top, the inner wall of the gate nut 15 is connected with the outer wall of the valve stem 4, the shape of the gate nut 15 is adapted to the shape of the valve stem 4, a mounting groove is provided in the valve body 1, the valve body 1 is fixedly connected with the filter screen 16 through the mounting groove, and by setting the mounting groove and the filter screen 16, impurities in the water flow can be filtered, thereby preventing impurities from adhering to the inner wall of the valve body 1 and causing the stop valve to be blocked, the top of the valve cover 3 is connected with the bottom of the bearing seat 17, a sealing bearing 18 is provided in the bearing seat 17, and the bearing seat 17 is through The sealed bearing 18 is mutually clamped with the valve stem 4. By setting the sealed bearing 18 and the bearing seat 17, the sealed bearing 18 can, on the one hand, reduce the friction generated when the valve stem 4 rotates, and avoid serious wear of the valve stem 4 after multiple rotations. On the other hand, it can ensure the sealing during rotation, and avoid the external airflow entering through the gap. The outer wall of the valve body 1 is provided with an anti-corrosion coating, and the valve body 1 is made of stainless steel. The shape of the gate plate 14 is adapted to the shape of the internal pipe of the valve body 1, and the shape of the first limiting hole 7 and the shape of the second limiting hole 8 are adapted to the shape of the limiting rod 9.

[0025] The working principle of the utility model is:

[0026] When in use, pull the limit rod 9 upwards so that the limit rod 9 disengages from the second limit hole 8 on the top of the valve cover 3, thereby releasing the restriction between the limit rod 9 and the second limit hole 8. At the same time, when the limit rod 9 moves upwards, it will drive the tray 10 to move upwards, thereby squeezing the spring 11 to shrink it. Then turn the handle 6, and the handle 6 will drive the connecting frame 5 and the valve stem 4 to rotate. The gate plate 14 can be driven to move upward through the valve stem 4 and the gate nut 15, thereby opening the stop valve. The height of the gate plate 14 can be controlled by rotating the angle of the handle 6, thereby adjusting the diameter of the cover stop valve, and the flow rate can be adjusted. At the same time, after the handle 6 is rotated, release the limit rod 9, so that the limit rod 9 is inserted into the corresponding second limit hole 8 under the action of the spring 11 for fixation.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A stop valve for adjusting flow rate, comprising a valve body (1), characterized in that: The valve body (1) is fixedly connected to the valve cover (3) via four fixing nuts (2); a valve stem (4) is arranged inside the valve body (1); a plurality of connecting frames (5) are fixedly connected to the outer wall of the valve stem (4); one end of the plurality of connecting frames (5) is connected to the inner wall of the same handle (6); a first limiting hole (7) is provided inside the connecting frame (5); a plurality of second limiting holes (8) are provided on the top of the valve cover (3); the position of the first limiting hole (7) corresponds to the position of the second limiting hole (8); the same limiting rod (9) is inserted into the corresponding first limiting hole (7) and the second limiting hole (8); a tray (10) is fixedly connected to the outer wall of the limiting rod (9); the top of the tray (10) is connected to the bottom end of the spring (11); the top of the spring (11) is connected to the bottom of the connecting frame (5).

2. A stop valve for adjusting flow rate according to claim 1, characterized in that: The opposing surfaces of the valve body (1) and the valve cover (3) are both provided with sealing grooves (12), and the same sealing ring (13) is clamped in the two sealing grooves (12).

3. A stop valve for adjusting flow rate according to claim 2, characterized in that: The sealing ring (13) is a chloroprene rubber sealing ring (13), and sealing filler is filled between the valve cover (3) and the valve stem (4).

4. A stop valve for adjusting flow rate according to claim 1, characterized in that: A gate plate (14) is arranged in the valve body (1), a gate plate nut (15) is fixedly connected to the top of the gate plate (14), an inner wall of the gate plate nut (15) is connected to the outer wall of the valve stem (4), and the shape of the gate plate nut (15) is adapted to the shape of the valve stem (4).

5. A stop valve for adjusting flow rate according to claim 1, characterized in that: A mounting groove is provided in the valve body (1), and the valve body (1) is fixedly connected to the filter screen (16) via the mounting groove.

6. A stop valve for adjusting flow rate according to claim 1, characterized in that: The top of the valve cover (3) is connected to the bottom of the bearing seat (17); a sealing bearing (18) is arranged in the bearing seat (17); and the bearing seat (17) and the valve stem (4) are mutually clamped via the sealing bearing (18).

7. A stop valve for adjusting flow rate according to claim 1, characterized in that: The outer wall of the valve body (1) is provided with an anti-corrosion coating, and the valve body (1) is made of stainless steel.

8. A stop valve for adjusting flow rate according to claim 4, characterized in that: The shape of the gate plate (14) matches the shape of the internal pipe of the valve body (1), and the shape of the first limiting hole (7) and the shape of the second limiting hole (8) match the shape of the limiting rod (9).

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