A gate valve with a support structure and quantifiable adjustable opening degree

Abstract

This invention provides a gate valve with a support structure and quantifiable adjustable opening, including a valve body, a valve cover, a gate, an adjusting mechanism, and a supporting mechanism. After the gate is placed into a pre-set slot in the valve body, the top of the valve body is sealed by the valve cover. The adjusting mechanism includes a lead screw, a threaded sleeve, and a limiting mechanism. The threaded sleeve is detachably and rotatably mounted on the top surface of the valve cover. One end of the lead screw is connected to the gate, and the other end passes through the valve body and the valve cover and is threadedly connected to the threaded sleeve. Rotating the threaded sleeve drives the lead screw to move the gate up and down, realizing quantifiable adjustment of the opening. A limiting mechanism is provided inside the valve cover to limit the threaded sleeve. The supporting mechanism is connected to the gate and provides stability and guidance when the valve plate rises and falls. The advantages of this invention compared with the prior art are: the limiting mechanism automatically locks the threaded sleeve at any position, realizing precise control of the medium flow; the supporting mechanism provides support and guidance for the gate, improving the stability of the valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a gate valve with a support structure and quantifiable adjustable opening degree. Background Technology

[0002] In industrial pipeline systems, gate valves are widely used to cut off or connect the medium in the pipeline. Their basic working principle involves rotating a handwheel or using an electric / pneumatic actuator to drive the valve stem, which in turn moves the gate between two parallel sealing surfaces within the valve body in a vertical, linear motion perpendicular to the flow path, thereby opening and closing the medium flow channel.

[0003] Traditional gate valve designs primarily focus on reliable sealing under extreme conditions of full opening or full closing. When a gate valve is used for partial opening to regulate flow, the high-speed fluid flowing through the narrow flow gap generates complex eddies and unstable flow fields, exerting significant lateral impact forces and pulsating pressures on the gate. This can easily cause the gate to vibrate, deflect, or even jam during operation, and the position of the valve plate will also be affected, making it difficult to achieve stable control of the opening.

[0004] Therefore, a gate valve with a support structure and quantifiable adjustable opening degree is needed. Utility Model Content

[0005] This utility model provides a gate valve with a support structure and adjustable opening degree, which aims to solve the problem that existing gate valves cannot accurately adjust the opening degree.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a gate valve with a support structure and adjustable opening degree, comprising a valve body, a valve cover, a gate, an adjusting mechanism, and a supporting mechanism;

[0007] The valve body has a medium flow channel inside. After the gate is inserted into the pre-set slot in the valve body, the top of the valve body is sealed by the valve cover.

[0008] The regulating mechanism includes a lead screw, a threaded sleeve, and a limiting mechanism. The threaded sleeve is detachably and rotatably mounted on the top surface of the valve cover. One end of the lead screw is fixedly connected to the gate, and the other end passes through the valve body and the valve cover and is threadedly connected to the threaded sleeve. After the valve cover is connected to the valve body, rotating the threaded sleeve drives the lead screw to move the gate up and down, thereby realizing the quantitative adjustment of the opening of the medium flow channel. The valve cover is equipped with a limiting mechanism that automatically limits the threaded sleeve.

[0009] The support mechanism is connected to the gate and is used to provide stability and guidance when the valve plate is raised and lowered.

[0010] As an improvement, a rotating handwheel is also provided at the top of the threaded sleeve, and scale lines are evenly distributed on the outer wall of the screw from top to bottom, making it easy for operators to read the opening value intuitively.

[0011] As an improvement, the limiting mechanism includes a rotating sleeve, a ratchet, a check pawl, and a torsion spring;

[0012] A groove is provided in the center of the top surface of the valve cover. After the rotating sleeve is rotated and set in the groove, the center is open for the lead screw to pass through. The ratchet is detachably installed on the rotating sleeve, and the top of the rotating sleeve is detachably connected to the threaded sleeve. An operating groove is also provided on one side of the groove on the valve cover. The check pawl is an L-shaped rod. After one end is rotatably connected to the operating groove, the other end is locked into any tooth groove of the ratchet. A torsion spring is also connected between the check pawl and the operating groove. After the rotating sleeve rotates, the release check pawl is locked into the corresponding tooth groove under the action of the torsion spring, thereby limiting the threaded sleeve.

[0013] As an improvement, the check pawl's rotating shaft extends to the outside of the valve cover and is connected to a lever, making it easy for operators to manually release the limit switch.

[0014] As an improvement, an annular limiting plate is fixedly installed on the outer wall of the rotating sleeve. Multiple positioning rods are evenly arranged on the top surface of the annular limiting plate. Multiple positioning holes are pre-set on the ratchet for the positioning rods to pass through. After the ratchet passes through the positioning holes and the positioning rods into the top surface of the annular limiting plate, the threaded sleeve and the rotating sleeve are detachably connected. The ratchet is limited and clamped between the annular limiting plate and the threaded sleeve.

[0015] As an improvement, after the ratchet is inserted into the top surface of the annular limiting plate, the top surface is flush with the top surface of the rotating sleeve. Each positioning rod has an external threaded groove at its top end, and an annular mounting plate is fixedly installed at the bottom end of the threaded sleeve. Multiple mounting holes for the positioning rods to pass through are evenly opened on the annular mounting plate. After the threaded sleeve passes through the mounting holes and is inserted into the top surface of the rotating sleeve and ratchet, each nut is threaded into each external threaded groove until it is flush with the top surface of the mounting plate.

[0016] As an improvement, after the lead screw passes through the threaded sleeve and connects to the valve plate, the valve cover is placed on the top surface of the valve body and fastened with bolts.

[0017] As an improvement, the support mechanism includes a human-shaped linkage structure and a fixed support plate;

[0018] The humanoid linkage structure includes a first linkage and a second linkage. The first linkage and the second linkage are hinged together to form a humanoid linkage structure. After the fixed support plate is detachably connected to the top surface of the valve body, multiple humanoid linkage structures are evenly hinged to the bottom surface. The other end of the humanoid linkage structure is hinged to the top surface of the valve plate. A through hole for the screw rod to move up and down is opened in the center of the fixed support plate.

[0019] As an improvement, a fixing groove is provided on the top surface of the valve body. The fixing support plate is inserted into the fixing groove. After the valve cover is threadedly fastened to the valve body, the fixing support plate is limited and fixed in the fixing groove. When the threaded sleeve is rotated, the lead screw pulls the valve plate up and down with the cooperation of multiple human-shaped connecting rod structures.

[0020] The advantages of this utility model compared with the prior art are as follows:

[0021] 1. The ratchet and check pawl design in the limit mechanism can automatically lock the threaded sleeve at any position to prevent changes in opening due to external vibration or misoperation. Together with the scale lines on the screw and the rotating handwheel, the operator can intuitively and accurately read and adjust the opening of the gate to achieve precise control of the medium flow.

[0022] 2. The support mechanism, consisting of a human-shaped linkage structure and a fixed support plate, provides strong support and guidance for the gate, effectively reducing vibration caused by fluid impact and improving the stability and sealing performance of the valve;

[0023] 3. The detachable design, especially the modular structure of the support and limit mechanisms, makes disassembly and maintenance simple and quick, reducing maintenance costs and downtime. Attached Figure Description

[0024] Figure 1 This is a three-dimensional view of a gate valve with a support structure and adjustable opening degree according to this utility model.

[0025] Figure 2 This is an exploded schematic diagram of a gate valve with a support structure and adjustable opening degree according to this utility model.

[0026] Figure 3 This is a cross-sectional view of a gate valve with a support structure and adjustable opening degree according to this utility model.

[0027] Figure 4 This is a perspective view of the valve cover of a gate valve with a support structure and adjustable opening degree according to this utility model.

[0028] Figure 5 This is a three-dimensional cross-sectional view of the valve cover of a gate valve with a support structure and adjustable opening degree according to this utility model.

[0029] Figure 6 This is a three-dimensional view of the valve body of a gate valve with a support structure and adjustable opening degree according to this utility model.

[0030] As shown in the figure: 1. Valve body; 2. Valve cover; 3. Gate; 4. Medium flow channel; 5. Slot; 6. Lead screw; 7. Threaded sleeve; 8. Rotary handwheel; 9. Scale line; 10. Rotating sleeve; 11. Ratchet; 12. Check pawl; 13. Torsion spring; 14. Groove; 15. Operating groove; 16. Lever; 17. Annular limit plate; 18. Positioning rod; 19. Positioning hole; 20. External thread groove; 21. Annular mounting plate; 22. Mounting hole; 23. Human-shaped connecting rod structure; 24. Fixed support plate; 25. Fixed groove. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] Example 1

[0034] A gate valve with a support structure and quantifiable adjustable opening, combined with an attached... Figure 1-2 As shown in Figures 4-6, the valve body includes a valve body 1, a valve cover 2, and a gate 3. A medium flow channel 4 is provided inside the valve body 1. After the gate 3 is placed into the pre-set slot 5 inside the valve body 1, the top of the valve body 1 is sealed by the valve cover 2.

[0035] It also includes an adjustment mechanism; the adjustment mechanism includes a lead screw 6, a threaded sleeve 7, and a limiting mechanism; the threaded sleeve 7 is detachably and rotatably mounted on the top surface of the valve cover 2, one end of the lead screw 6 is fixedly connected to the gate 3, and the other end passes through the valve body 1 and the valve cover 2 and is threadedly connected to the threaded sleeve 7. After the valve cover 2 is connected to the valve body 1, rotating the threaded sleeve 7 drives the lead screw 6 to move the gate 3 up and down to realize the quantitative adjustment of the opening of the medium flow channel 4. The valve cover 2 is equipped with a limiting mechanism that automatically limits the threaded sleeve 7; a rotating handwheel 8 is also provided at the top of the threaded sleeve 7, and scale lines 9 are evenly opened from top to bottom on the outer wall of the lead screw 6 to facilitate the operator to read the opening value intuitively;

[0036] With the above structure, the device is first assembled before use. One end of the lead screw 6 is threadedly connected to the threaded sleeve 7 and extends out. Then, the valve cover 2 can be connected to the valve body 1. After the valve cover 2 is placed, it is tightened with bolts. At this time, the valve plate is placed inside the valve body 1. When in use, by rotating the handwheel 8, the lead screw 6 can be driven up and down, pulling the valve plate up and down. With the cooperation of the scale line 9, the opening degree can be adjusted. After the opening degree is adjusted, the limiting mechanism limits the threaded sleeve 7 to prevent rotation, thereby fixing the position of the lead screw 6 and realizing stable adjustment of the opening degree.

[0037] The limiting mechanism includes a rotating sleeve 10, a ratchet 11, a check pawl 12, and a torsion spring 13. A groove 14 is provided in the center of the top surface of the valve cover 2. After the rotating sleeve 10 is rotatably positioned in the groove 14, the center is open for the lead screw 6 to pass through. The ratchet 11 is detachably mounted on the rotating sleeve 10, and the top of the rotating sleeve 10 is detachably connected to the threaded sleeve 7. An operating groove 15 is also provided on the valve cover 2 on one side of the groove 14. The check pawl 12 is an L-shaped rod. After one end is rotatably connected to the operating groove 15, the other end is engaged in any tooth groove of the ratchet 11. A torsion spring 13 is also connected between the check pawl 12 and the operating groove 15. After the rotating sleeve 10 rotates, the check pawl 12 is released and engaged in the corresponding tooth groove under the action of the torsion spring 13, thereby limiting the threaded sleeve 7. The rotating shaft of the check pawl 12 extends to the outside of the valve cover 2 and is connected to a lever 16, which is convenient for the operator to manually release the limit.

[0038] When the operator rotates the handwheel 8 to drive the threaded sleeve 7 and ratchet 11 to rotate, the end of the check pawl 12 will be lifted from one tooth groove and slide over the tooth tip. Once the rotation stops, the spring force of the torsion spring 13 will immediately drive the end of the check pawl 12 to automatically fall into the next nearest tooth groove, thereby locking the ratchet 11 and the threaded sleeve 7 fixed thereto in the current position. The positions of the screw 6 and the gate 3 are reliably fixed, preventing unexpected changes in the opening degree caused by pipeline vibration or accidental handwheel contact.

[0039] When the opening needs to be adjusted, the operator only needs to move the lever 16 by hand to overcome the elastic force of the torsion spring 13 and lift the end of the check pawl 12 out of the tooth groove. The handwheel 8 can then be rotated freely for adjustment. After the lever 16 is released, the check pawl 12 will automatically reset and relock under the action of the torsion spring 13.

[0040] It also includes a support mechanism; the support mechanism is connected to the gate plate 3 and is used to provide stability and guidance when the valve plate is raised and lowered; after the lead screw 6 passes through the threaded sleeve 7 and is connected to the valve plate, the valve cover 2 is placed on the top surface of the valve body 1 and is fastened by bolts; the support mechanism includes a human-shaped connecting rod structure 23 and a fixed support plate 24; the human-shaped connecting rod structure 23 includes a first connecting rod and a second connecting rod, and the first connecting rod and the second connecting rod are hinged to form the human-shaped connecting rod structure 23; after the fixed support plate 24 is detachably connected to the top surface of the valve body 1, multiple human-shaped connecting rod structures 23 are evenly hinged on the bottom surface, and the other end of the human-shaped connecting rod structure 23 is hinged to the top surface of the valve plate; a through hole for the lead screw 6 to move up and down is opened in the center of the fixed support plate 24;

[0041] When the lead screw 6 drives the gate plate 3 to move up and down, multiple humanoid linkage structures 23 move synchronously. The humanoid linkage structures 23 provide multi-point, symmetrical support for the gate plate 3. No matter where the gate plate 3 is, these linkages can effectively constrain the lateral displacement of the gate plate 3, preventing it from tilting or swaying under fluid impact. The hinged design of the linkages allows the gate plate 3 to move freely up and down in the vertical direction, while greatly enhancing its resistance to lateral forces and overall rigidity, significantly improving the operational stability of the valve in the partially open state.

[0042] Example 2

[0043] Based on Example 1, combined with Appendix Figure 3 As shown, an annular limiting plate 17 is fixedly installed on the outer wall of the rotating sleeve 10. Multiple positioning rods 18 are evenly arranged on the top surface of the annular limiting plate 17. Multiple positioning holes 19 are pre-set on the ratchet 11 for the positioning rods 18 to pass through. After the ratchet 11 passes through the positioning holes 19 and the positioning rods 18 into the top surface of the annular limiting plate 17, the threaded sleeve 7 and the rotating sleeve 10 are detachably connected. The ratchet 11 is clamped and limited between the annular limiting plate 17 and the threaded sleeve 7. The ratchet 11 is inserted until it is tightly against the annular limiting plate 17. After the top surface of the limiting plate 17 is flush with the top surface of the rotating sleeve 10, the top of each positioning rod 18 is provided with an external thread groove 20, and the bottom of the threaded sleeve 7 is fixedly provided with an annular mounting plate 21. Multiple mounting holes 22 for the positioning rods 18 to pass through are evenly provided on the annular mounting plate 21. The threaded sleeve 7 passes through the mounting holes 22 and passes through each positioning rod 18 until it is close to the top surface of the rotating sleeve 10 and the ratchet 11. Each nut is threadedly connected to each external thread groove 20 until it is close to the top surface of the mounting plate.

[0044] Place the ratchet 11 on the annular limiting plate 17, so that the positioning holes 19 on it pass through the positioning rod 18 one by one, ensuring that the ratchet 11 is tightly against the top surface of the annular limiting plate 17. Align the mounting holes 22 on the annular mounting plate 21 with the positioning rod 18 and insert it from above. Screw the nut into the external thread groove 20 at the top of the positioning rod 18 and tighten it until the nut is tightly against the top surface of the annular mounting plate 21. At this time, the ratchet 11 is firmly clamped between the annular limiting plate 17 and the threaded sleeve 7, and the installation operation of the threaded sleeve 7 is completed, which is convenient for assembly and maintenance.

[0045] A fixing groove 25 is provided on the top surface of the valve body 1. The fixing support plate 24 is inserted into the fixing groove 25. After the valve cover 2 is threadedly fastened to the valve body 1, the fixing support plate 24 is fixed in the fixing groove 25. Rotating the threaded sleeve 7 causes the lead screw 6 to move the valve plate up and down in cooperation with multiple human-shaped connecting rod structures 23. After the valve cover 2 is fastened to the valve body 1 with bolts, the fixing support plate 24 will be pressed into the fixing groove 25, realizing a quick installation operation.

[0046] In practical use, the operator rotates the handwheel 8 to rotate the threaded sleeve 7, causing the lead screw 6 to move up and down, which in turn drives the gate 3 to slide within the valve body 1. The human-shaped connecting rod structure 23 provides strong support and guidance for the gate 3, thereby adjusting the opening of the medium flow channel 4. When the required opening is reached, the check pawl 12 in the limiting mechanism automatically engages with the corresponding tooth groove of the ratchet 11 under the action of the torsion spring 13, thereby locking the threaded sleeve 7. If the opening needs to be adjusted, simply move the lever 16 to retract the check pawl 12 and then continue rotating the handwheel 8. During maintenance, the valve cover 2, support mechanism, and limiting mechanism can be easily disassembled to inspect and replace the internal components.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gate valve having a support structure with quantifiable adjustment of opening, characterized by: It includes a valve body (1), a valve cover (2), a gate (3), an adjustment mechanism, and a support mechanism; The valve body (1) has a medium flow channel (4) inside. After the gate (3) is placed into the preset slot (5) inside the valve body (1), the top of the valve body (1) is sealed by the valve cover (2). The regulating mechanism includes a lead screw (6), a threaded sleeve (7), and a limiting mechanism. The threaded sleeve (7) is detachably and rotatably mounted on the top surface of the valve cover (2). One end of the lead screw (6) is fixedly connected to the gate (3), and the other end passes through the valve body (1) and the valve cover (2) and is threadedly connected to the threaded sleeve (7). After the valve cover (2) is connected to the valve body (1), rotating the threaded sleeve (7) drives the lead screw (6) to move the gate (3) up and down, thereby realizing the quantitative adjustment of the opening of the medium flow channel (4). The valve cover (2) is equipped with a limiting mechanism that automatically limits the threaded sleeve (7). The support mechanism is connected to the gate (3) to provide stability and guidance when the valve plate is raised or lowered.

2. The gate valve with support structure quantitatively adjustable opening degree according to claim 1, characterized in that: The top of the threaded sleeve (7) is also equipped with a rotating handwheel (8), and the outer wall of the screw (6) is evenly marked with scale lines (9) from top to bottom.

3. The gate valve with support structure quantitatively adjustable opening degree according to claim 1, characterized in that: The limiting mechanism includes a rotating sleeve (10), a ratchet (11), a check pawl (12), and a torsion spring (13); A groove (14) is provided in the center of the top surface of the valve cover (2). After the rotating sleeve (10) is rotated and set in the groove (14), the center is open for the lead screw (6) to pass through. The ratchet (11) is detachably installed on the rotating sleeve (10), and the top of the rotating sleeve (10) is detachably connected to the threaded sleeve (7). The valve cover (2) is also provided with an operating groove (15) located on one side of the groove (14). The check pawl (12) is an L-shaped rod. After one end is rotatably connected to the operating groove (15), the other end is inserted into any tooth groove of the ratchet (11). A torsion spring (13) is also connected between the check pawl (12) and the operating groove (15). After the rotating sleeve (10) rotates, the release check pawl (12) is inserted into the corresponding tooth groove under the action of the torsion spring (13).

4. The gate valve with support structure quantitatively adjustable opening degree according to claim 3, characterized in that: The rotating shaft of the check pawl (12) extends to the outside of the valve cover (2) and is connected to a lever (16).

5. A gate valve with a support structure and quantifiable adjustable opening degree according to claim 3, characterized in that: An annular limiting plate (17) is fixedly installed on the outer wall of the rotating sleeve (10). Multiple positioning rods (18) are evenly arranged on the top surface of the annular limiting plate (17). Multiple positioning holes (19) are pre-set on the ratchet (11) for the positioning rods (18) to pass through. After the ratchet (11) passes through the positioning holes (19) and the positioning rods (18) and is placed on the top surface of the annular limiting plate (17), the threaded sleeve (7) and the rotating sleeve (10) are detachably connected. The ratchet (11) is limited and clamped between the annular limiting plate (17) and the threaded sleeve (7).

6. A gate valve with a support structure and quantifiable adjustable opening degree according to claim 5, characterized in that: After the ratchet (11) is placed close to the top surface of the annular limiting plate (17), its top surface is flush with the top surface of the rotating sleeve (10). Each positioning rod (18) has an external thread groove (20) at its top end. The bottom end of the threaded sleeve (7) is fixedly provided with an annular mounting plate (21). The annular mounting plate (21) has multiple mounting holes (22) evenly provided for the positioning rods (18) to pass through. After the threaded sleeve (7) passes through the mounting holes (22) and is placed close to the top surface of the rotating sleeve (10) and the ratchet (11), each nut is threadedly connected to each external thread groove (20) until it is close to the top surface of the mounting plate.

7. A gate valve with a support structure and quantifiable adjustable opening degree according to claim 1, characterized in that: After the lead screw (6) passes through the threaded sleeve (7) and connects to the valve plate, the valve cover (2) is placed on the top surface of the valve body (1) and fastened by bolts.

8. A gate valve with a support structure and quantifiable adjustable opening degree according to claim 7, characterized in that: The support mechanism includes a human-shaped linkage structure (23) and a fixed support plate (24); The humanoid linkage structure (23) includes a first link and a second link. The first link and the second link are hinged together to form the humanoid linkage structure (23). After the fixed support plate (24) is detachably connected to the top surface of the valve body (1), multiple humanoid linkage structures (23) are evenly hinged on the bottom surface. The other end of the humanoid linkage structure (23) is hinged to the top surface of the valve plate. A through hole for the screw rod (6) to move up and down is opened in the center of the fixed support plate (24).

9. A gate valve with a support structure and quantifiable adjustable opening degree according to claim 8, characterized in that: A fixing groove (25) is provided on the top surface of the valve body (1). The fixing support plate (24) is inserted into the fixing groove (25). After the valve cover (2) is threadedly fastened to the valve body (1), the fixing support plate (24) is fixed in the fixing groove (25). When the threaded sleeve (7) is rotated, the screw (6) pulls the valve plate up and down with the cooperation of multiple human-shaped connecting rod structures (23).

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