Plug-in valve with small flow regulation function
By designing the valve plate, stamping support plate, push rod, and other components in the slide gate valve, and combining them with motor drive and encoder control, small flow rate regulation is achieved. This solves the problem that existing slide gate valves are difficult to regulate in small flow rates, expands the application range, and improves the efficiency of use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHENGDU ZHONGKE WISH INSTR CO LTD
- Filing Date
- 2026-05-08
- Publication Date
- 2026-06-05
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing slide gate valves are difficult to adjust for small flow rates, which limits their application range.
By designing the coordination of components such as valve plate, stamping support plate, push plate, push rod, drive rod, and differential pressure flow adjustment lever, and using motor drive and encoder control, the small distance between the valve plate and the stamping support plate can be adjusted. Combined with the adjustment ball and sealing structure, small flow control can be achieved.
It enables minute flow regulation of the slide gate valve in the closed state, expanding its application range, and improves the valve's efficiency and reliability by reducing friction and improving sealing design.
Smart Images
Figure CN122148770A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of valve technology, and in particular to a slide gate valve with a small flow rate regulation function. Background Technology
[0002] The core component of a slide gate valve is the valve plate. By moving the valve plate, the opening on the plate that matches the pipe diameter is aligned or misaligned, thus controlling the flow of media. The valve body has a groove-free design, preventing media jamming and making it suitable for complex media such as powders and granules. It is available in both soft and hard sealing structures, and can be driven manually, pneumatically, and electrically, making it widely used in many industries such as mining, power, municipal wastewater treatment, food, and pharmaceuticals. In existing slide gate valve technology, the valve can open, close, and control flow based on the opening degree. This opening degree refers to the position of the valve plate between open and closed. This type of flow control is difficult to achieve for small flow regulation. Summary of the Invention
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a slide gate valve with a small flow rate regulation function.
[0004] The objective of this invention is achieved through the following technical solution: A slide gate valve with small flow rate regulation function includes a valve plate, a stamping support plate, a push plate, a spring plate, a push rod, a drive rod, a valve body, and a differential pressure flow rate regulating paddle. The valve plate is sealed to one inner wall of the valve body, the stamping support plate is fitted to the other inner wall of the valve body and fixedly connected to one end of the spring plate, the valve plate and the stamping support plate are respectively fixedly connected to both ends of the spring plate, the push plate is disposed between the valve plate and the stamping support plate, the push rod is fixedly disposed on the push plate, one end of the push rod abuts against the stamping support plate, and the other end of the push rod abuts against a depth groove on the valve plate, the differential pressure flow rate regulating paddle is fixedly connected to the push plate, one end of the valve plate is provided with a drive groove that cooperates with the drive rod, one end of the drive groove is provided with an arc-shaped groove that cooperates with the drive rod, and the drive rod cooperates with the differential pressure flow rate regulating paddle when it is in the arc-shaped groove.
[0005] Furthermore, the push rod is provided with a through ball hole, and at least two adjusting balls are provided in the ball hole. One adjusting ball cooperates with the depth groove, and the other adjusting ball cooperates with the stamping support plate. The stamping support plate is provided with an annular groove that cooperates with the adjusting ball.
[0006] Furthermore, a first connecting flange that mates with the valve plate is sealed and fixedly disposed on one side of the valve housing, and a second connecting flange that mates with the stamping support plate is sealed and fixedly disposed on one side of the valve housing. The first connecting flange and the second connecting flange are coaxially disposed. A first sealing groove that mates with the first connecting flange is disposed on the valve plate, and a first sealing ring that mates with the first connecting flange is disposed in the first sealing groove.
[0007] Furthermore, the drive rod is fixedly mounted on one end of the swing arm, the other end of the swing arm is fixedly connected to the output shaft of the motor, the motor is fixedly mounted on the motor base, the motor base is sealed and fixedly mounted on the valve body, the output shaft of the motor and the motor base are sealed together, the motor base is provided with a motor housing, and the motor is disposed inside the motor housing.
[0008] Furthermore, the output shaft of the motor is connected to one end of the main shaft via a coupling, and the other end of the main shaft is fixedly connected to the swing arm. The main shaft is sealed in a sleeve, and the sleeve is sealed on the motor base. A first bearing is provided between the sleeve and the main shaft, and a second sealing ring is provided between the end of the sleeve and the main shaft.
[0009] Furthermore, a connecting seat that is sealed and fitted with the main rotating shaft is fixedly provided on the motor base, a second bearing is provided between the connecting seat and the main rotating shaft, and a third sealing ring is provided between the connecting seat and the main rotating shaft.
[0010] Furthermore, a fourth sealing ring is provided between the motor base, the sleeve, and the connecting seat.
[0011] Furthermore, the connecting seat is provided with an encoder that cooperates with the main rotating shaft. The encoder is electrically connected to the control box. The control box is fixedly mounted on the adapter plate, and the adapter plate is fixedly mounted on the motor base.
[0012] Furthermore, a shallow groove is provided on the valve plate, and the shallow groove is connected to the deep groove through a differential pressure groove.
[0013] Furthermore, a stabilizing shaft is fixedly installed at each of the four corners of the valve plate, and a guide bearing that mates with the inner wall of the valve housing is sleeved on the stabilizing shaft.
[0014] The beneficial effects of this invention are: 1) In this technology, by using the valve plate, stamping support plate and push plate and other components together, the valve plate can be closed to achieve small flow rate regulation, which makes the application range of the slide valve wider.
[0015] 2) In this technology, setting an adjusting ball inside the push rod not only reduces friction but also allows for better adjustment of the distance between the valve plate and the stamping support plate. Attached Figure Description
[0016] Figure 1 This is a three-dimensional connection structure diagram of the slide gate valve; Figure 2 This is a diagram showing the connection structure between the valve plate and the stamping support plate. Figure 3 This is a diagram showing the internal connection structure of this slide gate valve; Figure 4 A diagram showing the depth groove on the valve plate; Figure 5 Diagram showing the working relationship between the ball and the putter; Figure 6 Diagram showing the fit between the ball and the depth groove; In the diagram, 1-valve plate, 2-stamping support plate, 3-push plate, 4-spring plate, 5-push rod, 6-drive rod, 7-valve body, 8-differential pressure flow regulating lever, 9-depth groove, 10-drive groove, 11-arc groove, 12-ball hole, 13-adjusting ball, 14-annular groove, 15-first connecting flange, 16-second connecting flange, 17-first sealing groove, 18-first sealing ring, 19-swing arm, 20-motor, 21-motor base, 22-motor housing, 23-coupling, 24-main shaft, 25-sleeve, 26-first bearing, 27-second sealing ring, 28-connecting seat, 29-second bearing, 30-third sealing ring. 31-Fourth sealing ring, 32-Encoder, 33-Control box, 34-Adapter plate, 35-Rotating sleeve, 36-Stabilizing shaft, 37-Guide bearing, 38-Snap ring, 39-End plate, 40-Shallow groove, 41-Differential pressure groove. Detailed Implementation
[0017] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] See Figures 1-6 The present invention provides a technical solution: A slide gate valve with small flow rate regulation function includes a valve plate 1, a stamping support plate 2, a push plate 3, a spring plate 4, a push rod 5, a drive rod 6, a valve body 7, and a differential pressure flow rate regulating paddle 8. The valve plate 1 is sealed to one side of the inner wall of the valve body 7. The stamping support plate 2 is fitted to the other side of the inner wall of the valve body 7 and is fixedly connected to one end of the spring plate 4. The valve plate 1 and the stamping support plate 2 are respectively fixedly connected to both ends of the spring plate 4. The push plate 3 is disposed between the valve plate 1 and the stamping support plate 2. A push rod 5 is fixedly disposed on the push plate 3. One end of the push rod 5 abuts against the stamping support plate 2, and the other end of the push rod 5 abuts against the depth groove 9 on the valve plate 1. The differential pressure flow rate regulating paddle 8 is fixedly connected to the push plate 3. One end of the valve plate 1 is provided with a drive groove 10 that cooperates with the drive rod 6. One end of the drive groove 10 is provided with an arc-shaped groove 11 that cooperates with the drive rod 6. When the drive rod 6 is in the arc-shaped groove 11, it cooperates with the differential pressure flow rate regulating paddle 8. A rotating sleeve 35, which mates with the drive groove 10, is fitted onto the drive rod 6. The rotating sleeve 35 is a bearing, as is common in the prior art. Under the action of the rotating sleeve 35, the drive rod 6 moves within the drive groove 10 and the arc-shaped groove 11, reducing friction. The motor 20 drives the drive rod 6. As the drive rod 6 slides within the drive groove 10, the valve plate 1 slides within the valve housing 7, thus opening and closing the valve. As the drive rod 6 moves further and further away from the depth groove 9 within the arc-shaped groove 11, the rotating sleeve 35 on the drive rod 6 pushes the differential pressure flow regulating paddle 8 to move. The differential pressure flow regulating paddle 8 pushes the push plate 3 to rotate around the center line of the push plate 3. The end of the push rod 5 on the push plate 3 slides from the bottom of the depth groove 9 to the opening of the depth groove 9. During this process, the distance between the valve plate 1 and the stamping support plate 2 slowly increases. The valve plate 1 and the stamping support plate 2 are respectively pressed against two surfaces of the valve body 7, thereby increasing the distance between the two opposing surfaces of the valve body 7. When the valve plate 1 and the valve body 7 are sealed, some medium passes through due to slight deformation of the valve body 7, thus achieving the purpose of small flow regulation. The valve plate 1 and the stamping support plate 2 are arranged parallel to each other. At least two sets of spring plates 4 are evenly arranged between the valve plate 1 and the stamping support plate 2. The spring plates 4 are elastic steel plates. One end of the spring plate 4 is fixed to the valve plate 1 by screws, and the other end of the spring plate 4 is arranged in a Z-shape and fixed in the insertion hole on the stamping support plate 2. In this technology, the valve plate 1 and the stamping support plate 2 are fixedly connected by six sets of spring plates 4. The six sets of spring plates 4 are arranged in a rotational symmetry, and their rotation center coincides with the axis of the push plate 3. The cross-section of the push plate 3 is circular. Under the action of the six sets of spring plates 4, the valve plate 1 and the stamping support plate 2 move together to realize the opening and closing of the valve.At least three sets of push rods 5 are evenly arranged between the valve plate 1 and the stamping support plate 2. The push plate 3 is used to fix the push rods 5 and the differential pressure flow regulating lever 8. The push rods 5 are stepped rods, with the steps on the push rods 5 resting on the lower surface of the push plate 3. The upper part of the push rods 5 is fixed to the push plate 3 by a retaining ring 38. In this technology, nine sets of push rods 5 are fixedly arranged on the push plate 3, and nine sets of depth grooves 9 that cooperate with the push rods 5 are provided on the valve plate 1. The push rods 5 are set perpendicular to the push plate 3, and the nine sets of push rods 5 are arranged on the same circle. The axis of this circle coincides with the axis of the push plate 3 and also with the axis of the annular groove 14. The differential pressure flow regulating lever 8 cooperates with the drive rod 6 to push the push plate 3 to rotate. The end of the valve body 7 is sealed by the end plate 39.
[0019] In some embodiments, the push rod 5 has a through ball hole 12, and at least two adjusting balls 13 are provided in the ball hole 12. One adjusting ball 13 cooperates with the depth groove 9, and the other adjusting ball 13 cooperates with the stamping support plate 2. The stamping support plate 2 has an annular groove 14 that cooperates with the adjusting balls 13. The two ends of the ball hole 12 are large and used to install the adjusting balls 13, while the middle of the ball hole 12 is small to prevent the two adjusting balls 13 from directly contacting each other, reducing friction between them. The adjusting balls 13 are steel balls. The adjusting ball 13 at one end of the push rod 5 rolls in the annular groove 14, and the adjusting ball 13 at the other end of the push rod 5 rolls in the depth groove 9, effectively preventing wear on the annular groove 14. The lifting surface in the annular groove 14 is S-shaped.
[0020] In some embodiments, a first connecting flange 15 that mates with the valve plate 1 is sealed and fixedly disposed on one side of the valve body 7, and a second connecting flange 16 that mates with the stamping support plate 2 is also sealed and fixedly disposed on one side of the valve body 7. The first connecting flange 15 and the second connecting flange 16 are coaxially arranged. A first sealing groove 17 that mates with the first connecting flange 15 is provided on the valve plate 1, and a first sealing ring 18 that seals with the first connecting flange 15 is provided in the first sealing groove 17. The first connecting flange 15 and the second connecting flange 16 are both welded to the valve body 7. The first connecting flange 15 and the second connecting flange 16 are used to connect to the external medium conveying pipeline. The first sealing groove 17 on the valve plate 1 is used to install the first sealing ring 18 (as in the prior art). The first sealing ring 18 seals the valve plate 1 and the first connecting flange 15 to prevent medium flow. When the valve plate 1 and the stamping support plate 2 are opened by the push rod 5, the pressure between the valve plate 1 and the first connecting flange 15 is greater, fully compressing the first sealing ring 18 and allowing some medium to flow between the valve plate 1 and the first connecting flange 15, thus achieving small flow rate regulation.
[0021] In some embodiments, the drive rod 6 is fixedly mounted on one end of the swing arm 19, and the other end of the swing arm 19 is fixedly connected to the output shaft of the motor 20. The motor 20 is fixedly mounted on the motor base 21, and the motor base 21 is sealed and fixedly mounted on the valve housing 7. The output shaft of the motor 20 and the motor base 21 are sealed together. A motor housing 22 is provided on the motor base 21, and the motor 20 is disposed inside the housing. The motor 20 is a servo motor as described in the prior art. Under the action of the motor 20, the swing arm 19 is driven to rotate. The swing arm 19 drives the drive rod 6 to slide within the drive groove 10 and the arc-shaped groove 11, thereby pushing the valve plate 1 to move. The motor base 21 is sealed and fixedly mounted on the valve housing 7 to mount the motor 20, and the motor housing 22 is detachably fixed to the motor base 21 to protect the motor 20.
[0022] In some embodiments, the output shaft of the motor 20 is connected to one end of the main shaft 24 via a coupling 23, and the other end of the main shaft 24 is fixedly connected to the swing arm 19. The main shaft 24 is sealed in a sleeve 25, which is also sealed in a motor mount 21. A first bearing 26 is provided between the sleeve 25 and the main shaft 24, and a second sealing ring 27 is provided between the end of the sleeve 25 and the main shaft 24. The coupling 23 connects the output shaft of the motor 20 and the main shaft 24, reducing installation accuracy requirements. The main shaft 24 is mounted inside the sleeve 25 via the first bearing 26 (as in the prior art), and the sleeve 25 is then mounted on the motor mount 21, thus reducing friction during the rotation of the main shaft 24. A sealing groove is provided on the inner wall of the sleeve 25 near its end, and a second sealing ring 27 is provided in the sealing groove to prevent media leakage.
[0023] In some embodiments, a connecting seat 28 that seals with the main shaft 24 is fixedly disposed on the motor base 21. A second bearing 29 is disposed between the connecting seat 28 and the main shaft 24, and a third sealing ring 30 is disposed between the connecting seat 28 and the main shaft 24. A fourth sealing ring 31 is disposed between the motor base 21, the sleeve 25, and the connecting seat 28. The connecting seat 28 is used to install the existing second bearing 29. The second bearing 29 and the first bearing 26 can better constrain the main shaft 24. The third sealing ring 30 and the fourth sealing ring 31 better prevent media leakage during use.
[0024] In some embodiments, an encoder 32 that mates with the main shaft 24 is provided on the connector 28. The encoder 32 is electrically connected to the control box 33, which is fixedly mounted on the adapter plate 34, which is also fixedly mounted on the motor mount 21. The encoder 32 is a prior art device; it is used to read the angle rotated by the main shaft 24. The encoder 32 transmits the read information to the control box 33, which further controls the rotation angle of the motor 20.
[0025] In some embodiments, a shallow groove 40 is provided on the valve plate 1, and the shallow groove 40 is connected to the deep groove 9 through a differential pressure groove 41. The shallow groove 40, the differential pressure groove 41, and the deep groove 9 form a hook-shaped structure. When the push plate 3 rotates, it drives the push rod 5 to move. The adjusting ball 13 at the end of the push rod 5 rolls from the deep groove 9 through the differential pressure groove 41 into the shallow groove 40. The differential pressure groove 41 has a large slope in the middle and a small slope at both ends. The push plate 3 rotates at a small angle. The adjusting ball 13 rapidly rises and pushes open the valve plate 1 and the stamping support plate 2. During the entire process of the valve plate 1 opening, the encoder 32 sends the rotation angle of the main shaft 24 to the control box 33 in real time. The flow rate at the valve core is calculated by the algorithm pre-input in the control box 33 and then fed back to the motor 20 to achieve the effect of controlling the pressure and flow rate. Meanwhile, in this technology, the regulating ball 13 is rapidly rising in the middle of the differential pressure groove 41. By adjusting the angle of the differential pressure flow regulating lever 8, the final position of the regulating ball 13 in the differential pressure groove 41 is changed, so that the final opening position of the regulating ball 13 is located in the rapidly rising section. At this stage, due to the steep slope of the differential pressure groove 41, and with a certain pressure difference on both sides of the valve plate 1, the regulating ball 13 can easily fall into the depth groove 9, thus completing the high pressure differential opening valve.
[0026] In some embodiments, a stabilizing shaft 36 is fixedly provided at each of the four corners of the valve plate 1, and a guide bearing 37 that mates with the inner wall of the valve housing 7 is sleeved on the stabilizing shaft 36. Since the valve plate 1 moves linearly, four guide bearings 37 are provided to reduce friction during movement and prevent friction between the sides of the valve plate 1 and the valve housing 7.
[0027] In the description of this invention, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.
[0028] In this invention, unless otherwise explicitly specified and limited, the terms "set", "install", "connect", "fix", "hinged", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0029] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.
Claims
1. A slide gate valve with low flow rate regulation function, characterized in that: The valve includes a valve plate (1), a stamping support plate (2), a push plate (3), a spring plate (4), a push rod (5), a drive rod (6), a valve body (7), and a differential pressure flow regulating lever (8). The valve plate (1) is sealed to one side of the inner wall of the valve body (7). The stamping support plate (2) is fitted to the other side of the inner wall of the valve body (7) and is fixedly connected to one end of the spring plate (4). The valve plate (1) and the stamping support plate (2) are respectively fixedly connected to both ends of the spring plate (4). The push plate (3) is disposed between the valve plate (1) and the stamping support plate (2). (3) The push rod (5) is fixedly installed on the upper part. One end of the push rod (5) is pressed against the stamping support plate (2), and the other end of the push rod (5) is pressed into the depth groove (9) on the valve plate (1). The differential pressure flow regulating paddle (8) is fixedly connected to the push plate (3). One end of the valve plate (1) is provided with a drive groove (10) that cooperates with the drive rod (6). One end of the drive groove (10) is provided with an arc groove (11) that cooperates with the drive rod (6). When the drive rod (6) is in the arc groove (11), it cooperates with the differential pressure flow regulating paddle (8).
2. The slide gate valve with low flow rate regulation function according to claim 1, characterized in that: The push rod (5) is provided with a through ball hole (12), and at least two adjusting balls (13) are provided in the ball hole (12). One adjusting ball (13) cooperates with the depth groove (9), and the other adjusting ball (13) cooperates with the stamping support plate (2). The stamping support plate (2) is provided with an annular groove (14) that cooperates with the adjusting ball (13).
3. The slide gate valve with low flow rate regulation function according to claim 1 or 2, characterized in that: A first connecting flange (15) that cooperates with the valve plate (1) is sealed and fixed on one side of the valve housing (7), and a second connecting flange (16) that cooperates with the stamping support plate (2) is sealed and fixed on one side of the valve housing (7). The first connecting flange (15) and the second connecting flange (16) are coaxially arranged. A first sealing groove (17) that cooperates with the first connecting flange (15) is provided on the valve plate (1), and a first sealing ring (18) that seals with the first connecting flange (15) is provided in the first sealing groove (17).
4. The slide gate valve with low flow rate regulation function according to claim 1 or 2, characterized in that: The drive rod (6) is fixedly mounted on one end of the swing arm (19), and the other end of the swing arm (19) is fixedly connected to the output shaft of the motor (20). The motor (20) is fixedly mounted on the motor base (21), and the motor base (21) is sealed and fixedly mounted on the valve housing (7). The output shaft of the motor (20) and the motor base (21) are sealed together. The motor base (21) is provided with a motor housing (22), and the motor (20) is located inside the motor housing (22).
5. The slide gate valve with low flow rate regulation function according to claim 4, characterized in that: The output shaft of the motor (20) is connected to one end of the main shaft (24) via a coupling (23). The other end of the main shaft (24) is fixedly connected to the swing arm (19). The main shaft (24) is sealed in a sleeve (25). The sleeve (25) is sealed in the motor base (21). A first bearing (26) is provided between the sleeve (25) and the main shaft (24). A second sealing ring (27) is provided between the end of the sleeve (25) and the main shaft (24).
6. The slide gate valve with low flow rate regulation function according to claim 5, characterized in that: A connecting seat (28) is fixedly provided on the motor base (21) and sealed to the main rotating shaft (24). A second bearing (29) is provided between the connecting seat (28) and the main rotating shaft (24). A third sealing ring (30) is provided between the connecting seat (28) and the main rotating shaft (24).
7. The slide gate valve with low flow rate regulation function according to claim 6, characterized in that: A fourth sealing ring (31) is provided between the motor base (21), the sleeve (25) and the connecting seat (28).
8. The slide gate valve with low flow rate regulation function according to claim 6, characterized in that: The connector (28) is provided with an encoder (32) that cooperates with the main shaft (24). The encoder (32) is electrically connected to the control box (33). The control box (33) is fixedly mounted on the adapter plate (34). The adapter plate (34) is fixedly mounted on the motor mount (21).
9. The slide gate valve with small flow rate regulation function according to claim 1 or 2, characterized in that: A shallow groove (40) is provided on the valve plate (1), and the shallow groove (40) is connected to the deep groove (9) through a differential pressure groove (41).
10. The slide gate valve with small flow rate regulation function according to claim 1 or 2, characterized in that: Stabilizing shafts (36) are fixedly installed at the four corners of the valve plate (1), and guide bearings (37) that cooperate with the inner wall of the valve housing (7) are sleeved on the stabilizing shafts (36).