Flow-adjustable gate valve

Abstract

The utility model relates to a flow-adjustable gate valve, and relates to the technical field of pipeline fittings. The gate valve comprises a valve body, a valve rod and a gate plate, the valve rod is rotationally connected with the valve body, the gate plate is located in the valve body, the gate plate is connected with the end, inserted into the valve body, of the valve rod, a positioning seat is arranged on the surface of the valve body, the valve rod penetrates through the positioning seat, and the peripheral wall, located outside the valve body, of the valve rod is slidably connected with a positioning sleeve. A limiting piece is arranged on the inner wall of the positioning sleeve, a limiting groove allowing the limiting piece to be embedded and slide is formed in the circumferential wall of the valve rod in the length direction, an inserting piece is arranged on the bottom wall of the positioning sleeve, and a plurality of positioning grooves allowing the inserting piece to be inserted are formed in the surface of the positioning base. The gate valve has the effect of improving the adjusting performance of the gate valve on the fluid medium flow.

Description

Technical Field

[0001] This application relates to the technical field of pipeline fittings, and particularly to a flow adjustable gate valve. Background Art

[0002] A gate valve is a commonly used pipeline valve. Its working principle is to control the flow of the medium in the valve body through a gate plate. The gate valve mainly consists of components such as a valve body, a gate plate, and a valve stem. The valve stem is rotatably connected to the valve body. The gate plate is located inside the valve body. One end of the valve stem passes through the valve body and is connected to the gate plate. By rotating the valve stem, the gate plate is driven to rotate inside the valve body, and thus the flow of the medium in the valve body can be controlled. However, the gate valves in the prior art can only adopt two working modes of fully open and fully closed, and cannot effectively adjust the rotation angle of the gate plate. Therefore, it is difficult to effectively control and adjust the flow rate of the medium, so it needs to be improved. Utility Model Content

[0003] In order to improve the adjustment performance of the gate valve for the flow rate of the fluid medium, this application provides a flow adjustable gate valve.

[0004] The flow adjustable gate valve provided by this application adopts the following technical solutions:

[0005] A flow adjustable gate valve includes a valve body, a valve stem, and a gate plate. The valve stem is rotatably connected to the valve body. The gate plate is located inside the valve body. The gate plate is connected to the end of the valve stem inserted into the valve body. A positioning seat is arranged on the surface of the valve body. The valve stem passes through the positioning seat. A positioning sleeve is slidably connected to the outer peripheral wall of the valve stem outside the valve body. A limiting piece is arranged on the inner wall of the positioning sleeve. A limiting groove for the limiting piece to be embedded and slide is arranged along the length direction of the outer peripheral wall of the valve stem. An inserting piece is arranged on the bottom wall of the positioning sleeve. A plurality of positioning grooves for the inserting piece to be inserted into are arranged on the surface of the positioning seat.

[0006] By adopting the above technical solutions, under the action of the limiting piece and the limiting groove, the positioning sleeve can only slide along the length direction of the valve stem. When the inserting piece is inserted into the positioning groove, the positioning sleeve cannot rotate, and thus the valve stem cannot rotate, and further the gate plate inside the valve body cannot rotate. Slide the positioning sleeve along the valve stem direction so that the inserting piece on the bottom wall of the positioning sleeve is withdrawn from the positioning groove on the positioning seat. At this time, the positioning sleeve and the valve stem will lose the fixation of the positioning seat. At this time, the staff can drive the gate plate to adjust the position by rotating the valve stem. When the adjustment is in place, reset the positioning sleeve so that the inserting piece is inserted into other positioning grooves, so that the positioning sleeve, the valve stem, and the gate plate are locked again. The provision of a plurality of positioning grooves enables the gate plate to be adjusted and positioned at multiple different angles, improving the control and adjustment performance of the gate valve for the fluid medium.

[0007] Optionally, the plurality of positioning grooves are evenly distributed along the circumferential direction of the positioning seat.

[0008] By adopting the above technical solution, the positioning grooves are evenly arranged along the circumferential direction of the surface of the positioning seat, so that the rotation angle of the gate plate can be controlled more accurately.

[0009] Optionally, a locking groove is formed in the top wall of the positioning sleeve, and a locking plug is slidably connected in the locking groove. When the positioning sleeve abuts against the positioning seat, the locking plug is located in the limiting groove and abuts against the top wall of the limiting groove. An elastic member is arranged in the locking groove, and the elastic member abuts between the locking plug and the inner wall of the locking groove, and the elastic member makes the locking plug keep a movement trend towards the valve stem direction.

[0010] By adopting the above technical solution, when the positioning sleeve abuts against the positioning seat, the locking plug abuts against the top wall of the locking groove. In this state, the positioning sleeve cannot slide along the length direction of the valve stem, thereby being able to maintain the stability of the positioning sleeve and the positioning seat, so as to prevent the insertion piece from falling off from the positioning groove, resulting in the problem that the valve stem drives the gate plate to rotate, thereby improving the stability after the gate plate is adjusted.

[0011] Optionally, a magnetic member is arranged on the peripheral wall of the valve stem, and the magnetic member is located above the positioning sleeve. When the positioning sleeve abuts against the magnetic member, the positioning sleeve and the magnetic member are magnetically attracted to each other.

[0012] By adopting the above technical solution, the magnetic member and the positioning sleeve are magnetically attracted to each other, so that when the valve stem is rotated, the problem that the positioning sleeve falls off and affects the rotation of the valve stem can be prevented, and the convenience and stability of adjusting the gate plate are improved.

[0013] Optionally, a sealing rubber strip is arranged on the peripheral wall of the gate plate.

[0014] By adopting the above technical solution, by arranging the sealing rubber strip, when the gate plate is in the fully closed state, the sealing performance of the gate valve can be effectively improved, and the probability of fluid medium leakage is reduced.

[0015] Optionally, a rotating bearing is arranged at the rotating connection between the valve stem and the valve body.

[0016] By adopting the above technical solution, arranging the rotating bearing can effectively reduce the wear when the valve stem and the valve body rotate, thereby effectively prolonging the service life of the gate valve of the present application.

[0017] Optionally, a filter screen is arranged inside the inlet end of the valve body.

[0018] By adopting the above technical solution, the filter screen can block the impurities in the fluid medium from flowing towards the gate plate, reduce the probability that the gate plate is stuck by impurities and then cannot rotate, so as to ensure the normal use of the gate valve.

[0019] Optionally, mounting flanges are provided at both the inlet end and the outlet end of the valve body.

[0020] By adopting the above technical solution, the provision of the mounting flanges facilitates the connection of the gate valve to the pipeline by the staff, improving the assembly convenience of the gate valve of the present application.

[0021] In summary, the present application includes at least one of the following beneficial technical effects:

[0022] 1. The staff can drive the gate plate to adjust its position by rotating the valve stem. After the adjustment is in place, the positioning sleeve is reset, so that the insertion piece is inserted into other positioning grooves, locking the positioning sleeve, the valve stem and the gate plate again. The provision of a plurality of positioning grooves enables the gate plate to be adjusted and positioned at multiple different angles, improving the control and adjustment performance of the gate valve for the fluid medium;

[0023] 2. When the positioning sleeve abuts against the positioning seat, the locking plug abuts against the top wall of the locking groove. In this state, the positioning sleeve cannot slide along the length direction of the valve stem, thus maintaining the stability of the positioning sleeve and the positioning seat to prevent the insertion piece from falling out of the positioning groove, which may cause the problem of the valve stem driving the gate plate to rotate, thereby improving the stability after the adjustment of the gate plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of a flow adjustable gate valve in an embodiment of the present application.

[0025] Figure 2 is a schematic structural diagram of the gate plate in an embodiment of the present application.

[0026] Figure 3 is Figure 1 a partial enlarged view of A in

[0027] Figure 4 is a schematic structural diagram of the positioning seat in an embodiment of the present application.

[0028] Description of the reference numerals: 1, valve body; 2, valve stem; 21, limiting groove; 22, magnetic member; 3, gate plate; 31, sealing strip; 4, positioning seat; 41, positioning groove; 5, positioning sleeve; 51, limiting piece; 52, insertion piece; 53, locking groove; 54, locking plug; 55, elastic member; 6, rotating bearing; 7, filter screen; 8, mounting flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following Figures 1-4 is a further detailed description of the present application in conjunction with the attached

[0030] An embodiment of the present application discloses a flow adjustable gate valve. Refer to Figure 1, including a valve body 1, a valve stem 2 and a gate 3. The valve body 1 includes an inlet end and an outlet end. Installation flanges 8 are provided at both the outlet end and the outlet end of the valve body 1 to facilitate the convenient installation of the gate valve of the present application. A filter screen 7 is provided on the inner wall of the inlet end of the valve body 1 to prevent impurities in the fluid medium from entering the valve body 1.

[0031] Referring to Figure 1 and Figure 2 , one end of the valve stem 2 passes through the valve seat and forms a rotational connection with the valve seat. A rotating bearing 6 is provided at the rotational connection between the valve stem 2 and the valve seat to reduce the wear when the valve stem 2 rotates; the gate 3 is arranged in the valve body 1, and the gate 3 is connected to one end of the valve stem 2 extending into the gate 3. The staff can drive the gate 3 to rotate synchronously by rotating the valve stem 2. In this embodiment, a sealing strip 31 is adhesively connected to the peripheral wall of the gate 3 to improve the sealing performance when the gate valve is fully closed.

[0032] Referring to Figure 1 , Figure 3 and Figure 4 , a positioning seat 4 is integrally formed on the top wall of the valve body 1. The valve stem 2 passes through the positioning seat 4. A positioning sleeve 5 is slidably connected to the peripheral wall of the valve stem 2 outside the positioning seat 4. A limiting piece 51 is integrally formed on the inner wall of the positioning sleeve 5. A limiting groove 21 for the limiting piece 51 to insert and slide is provided on the peripheral wall of the valve stem 2 along the length direction. The bottom end of the limiting groove 21 extends to the bottom end of the valve stem 2. An insertion piece 52 is integrally formed on the bottom wall of the positioning sleeve 5. A plurality of positioning grooves 41 for the insertion piece 52 to insert are provided on the surface of the positioning seat 4. The plurality of positioning grooves 41 are distributed along the circumferential direction of the positioning seat 4. Under the action of the limiting piece 51, the positioning sleeve 5 cannot rotate relative to the valve stem 2 and can only slide along the length direction of the valve stem 2. When the insertion piece 52 is inserted into one of the positioning grooves 41, the positioning of the valve stem 2 and the gate 3 can be realized. The setting of the plurality of positioning grooves 41 enables the gate 3 to remain stable after being adjusted at different angles.

[0033] Referring to Figure 1 and Figure 3, a locking groove 53 is formed on the surface of the positioning sleeve 5, and a locking plug 54 is slidably connected in the locking groove 53. When the positioning sleeve 5 abuts against the positioning seat 4, one end of the locking plug 54 is located in the limiting groove 21 and abuts against the top wall of the limiting groove 21, thereby being able to limit the up-and-down sliding of the positioning sleeve 5 to maintain the stability of the valve stem 2; an elastic member 55 is also arranged in the limiting groove 21, and the elastic member 55 abuts between the inner wall of the locking groove 53 and the locking plug 54. In this embodiment, the elastic member 55 is composed of a spring and a guide rod. The guide rod is connected to the inner wall of the locking groove 53, and one end of the guide rod is inserted into the locking plug 54, so that the locking plug 54 can slide along the length direction of the guide rod. The spring is sleeved on the periphery of the guide rod, and the spring abuts between the inner wall of the locking groove 53 and the side wall of the locking plug 54, so that the locking plug 54 maintains a movement trend towards the limiting groove 21. When it is necessary to slide the positioning sleeve 5, the locking block is pulled out, and then the elastic member 55 is compressed, so that the locking block can be adjusted.

[0034] Referring to Figure 1 and Figure 3 , a magnetic member 22 is arranged on the peripheral wall of the valve stem 2, and the magnetic member 22 is arranged above the positioning sleeve 5. When the magnetic member 22 abuts against the positioning sleeve 5, the magnetic member 22 and the positioning sleeve 5 are magnetically attracted to each other, thereby being able to maintain the stability of the positioning sleeve 5 and prevent the positioning sleeve 5 from falling off. In this embodiment, the magnetic member 22 is a magnet, and the positioning sleeve 5 is made of iron material.

[0035] The implementation principle of the flow adjustable gate valve in the embodiment of the present application is as follows: under the action of the limiting piece 51 and the limiting groove 21, the positioning sleeve 5 can only slide along the length direction of the valve stem 2. When the inserting piece 52 is inserted into the positioning groove 41, the positioning sleeve 5 cannot rotate, and further the valve stem 2 cannot rotate, and further the gate plate 3 in the valve body 1 cannot rotate. Slide the positioning sleeve 5 along the direction of the valve stem 2, so that the inserting piece 52 at the bottom wall of the positioning sleeve 5 is withdrawn from the positioning groove 41 on the positioning seat 4. At this time, the positioning sleeve 5 and the valve stem 2 will lose the fixation of the positioning seat 4. At this time, the staff can adjust the position of the gate plate 3 by rotating the valve stem 2. When the adjustment is in place, the positioning sleeve 5 is reset, so that the inserting piece 52 is inserted into other positioning grooves 41, so that the positioning sleeve 5, the valve stem 2 and the gate plate 3 are locked again. By providing a plurality of positioning grooves 41, the gate plate 3 can be adjusted and positioned at multiple different angles, improving the control and adjustment performance of the gate valve for fluid media.

[0036] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A flow rate adjustable gate valve, comprising a valve body (1), a valve stem (2) and a gate plate (3), wherein the valve stem (2) is rotatably connected to the valve body (1), the gate plate (3) is located inside the valve body (1), and the gate plate (3) is connected to one end of the valve stem (2) inserted into the valve body (1), and is characterized in that: A positioning seat (4) is provided on the surface of the valve body (1). The valve stem (2) passes through the positioning seat (4). A positioning sleeve (5) is slidably connected to the peripheral wall of the valve stem (2) outside the valve body (1). A limiting piece (51) is provided on the inner wall of the positioning sleeve (5). A limiting groove (21) for the limiting piece (51) to be inserted and slide is formed in the peripheral wall of the valve stem (2) along the length direction. An inserting piece (52) is provided on the bottom wall of the positioning sleeve (5). A plurality of positioning grooves (41) for the inserting piece (52) to be inserted are formed on the surface of the positioning seat (4).

2. The flow-adjustable gate valve according to claim 1, characterized in that: A plurality of the positioning grooves (41) are evenly distributed along the circumferential direction of the positioning seat (4).

3. The flow rate adjustable gate valve according to claim 1, characterized in that: A locking groove (53) is formed in the top wall of the positioning sleeve (5). A locking plug (54) is slidably connected in the locking groove (53). When the positioning sleeve (5) abuts against the positioning seat (4), the locking plug (54) is located in the limiting groove (21) and abuts against the top wall of the limiting groove (21). An elastic member (55) is provided in the locking groove (53). The elastic member (55) abuts between the locking plug (54) and the inner wall of the locking groove (53). The elastic member (55) makes the locking plug (54) keep a movement tendency towards the direction of the valve stem (2).

4. The flow rate adjustable gate valve according to claim 3, characterized in that: A magnetic member (22) is provided on the peripheral wall of the valve stem (2). The magnetic member (22) is located above the positioning sleeve (5). When the positioning sleeve (5) abuts against the magnetic member (22), the positioning sleeve (5) and the magnetic member (22) are magnetically attracted to each other.

5. The flow rate adjustable gate valve according to claim 1, characterized in that: A sealing strip (31) is provided on the peripheral wall of the gate plate (3).

6. The flow adjustable gate valve according to claim 1, characterized in that: A rotating bearing (6) is provided at the rotating connection between the valve stem (2) and the valve body (1).

7. The flow-adjustable gate valve according to claim 1, wherein: A filter screen (7) is provided inside the inlet end of the valve body (1).

8. The flow rate adjustable gate valve according to claim 1, wherein: Mounting flanges (8) are provided at both the inlet end and the outlet end of the valve body (1).

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