A type of anti-loosening shut-off valve

Abstract

This utility model relates to the field of gate valve technology, specifically an anti-loosening gate valve, comprising: a valve body, including a gate valve; and a buffer mechanism, including a rubber expansion joint, wherein the rubber expansion joint acts on the surface of the gate valve, and a circular groove is formed on the surface of the rubber expansion joint. This utility model, through the connection of the gate valve and the rubber expansion joint, absorbs the vibration energy generated by the impact of water flow by installing the rubber expansion joint, thus ensuring the tightness of the flange connection. Furthermore, the connection between the rubber expansion joint and the circular groove does not affect the bolt fixing of the two flange connections together. The groove is installed on the surface of the mounting plate following the installation of the rubber expansion joint, allowing the connecting base to drive the limit buckle to engage inside the groove, thereby fixing the installation position of the rubber expansion joint and improving the tightness of the rubber expansion joint connection, achieving the effect of preventing loosening at the connection between the gate valve and the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically a gate valve designed to prevent loosening. Background Technology

[0002] A gate valve is a forced-seal valve that opens and closes by the vertical movement of the valve disc along the center line of the valve seat. It is mainly used to cut off, regulate or throttle fluid media.

[0003] Gate valves use a valve stem to drive the valve disc to forcefully press against the valve seat, forming a complete seal that blocks the transmission path of liquids, gases, and other fluids. This characteristic makes them widely used in scenarios such as water supply system maintenance and safety isolation in chemical production. By adjusting the valve disc opening, the flow rate of the medium can be controlled. However, when using existing gate valves, the connection between them and the pipeline is prone to loosening due to water flow impact during long-term use, resulting in loose connections between the two flanges and restricting water flow. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-loosening gate valve to solve the problem mentioned in the background art that when the gate valve is used, its connection with the pipeline is easily loosened by water flow impact during long-term use, resulting in the two flange connections not being secure and water flow being restricted.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anti-loosening shut-off valve, comprising:

[0006] Valve body, including shut-off valve;

[0007] The buffer mechanism includes a rubber flexible joint that acts on the surface of the valve. The surface of the rubber flexible joint has a circular groove and a retaining groove. A mounting plate is fixedly connected to the surface of the valve. A connecting base is fixedly connected to the surface of the mounting plate. A limit buckle is fixedly connected to the surface of the connecting base. A fastening ball is fixedly connected to the surface of the valve.

[0008] Preferably, the rubber expansion joints are symmetrically distributed in two groups on the surface of the valve, and the circular grooves are evenly formed on the surface of the rubber expansion joints.

[0009] Preferably, the slots are evenly distributed in four groups on the surface of the rubber expansion joint, and the mounting plates are evenly distributed in four groups on the surface of the valve. The slots are connected by the rubber expansion joint and the mounting plates through an insertion fit.

[0010] Preferably, the limiting buckles are evenly distributed in four groups on the surface of the connecting base, the connecting base is connected by surface insertion of the mounting plate and the slot, and the limiting buckles are connected by internal engagement of the connecting base and the slot.

[0011] Preferably, the fastening balls are evenly distributed on the surface of the valve, and the rubber flexible joint is connected to the inside of the valve through the fastening balls.

[0012] Preferably, the limiting mechanism includes an adjusting box, which is fixedly connected to the surface of the gate valve. An adjusting knob is rotatably connected to the surface of the adjusting box. A worm gear is fixedly connected to the surface of the adjusting knob. A fixed shaft is fixedly connected inside the adjusting box. A worm wheel is meshed with the surface of the worm gear. An adjusting threaded rod is fixedly connected to the surface of the worm wheel. A limiting block is threadedly sleeved onto the surface of the adjusting threaded rod.

[0013] Preferably, the adjustment box is in two sets, the worm gear is rotatably connected to the inside of the adjustment box via an adjustment knob, and the worm wheel is rotatably connected to the surface of the worm gear and the fixed shaft.

[0014] Preferably, the adjusting threaded rod is rotatably connected to the internal parts of the adjusting box via a worm gear, and the limiting block is movably connected to the surface of the adjusting threaded rod and the adjusting box.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. By connecting the valve and the rubber expansion joint, the rubber expansion joint can absorb the vibration energy generated by the water flow impact, ensuring the tightness of the flange connection. Then, by connecting the rubber expansion joint and the circular groove, it does not affect the two flange connections being fixed together with bolts. By connecting the rubber expansion joint and the slot, and connecting the valve and the mounting plate, the slot can be installed on the surface of the mounting plate along with the rubber expansion joint. By connecting the connecting base and the limit buckle, and connecting the limit buckle and the slot, the connecting base can drive the limit buckle to engage inside the slot, thereby fixing the installation position of the rubber expansion joint. Finally, by connecting the valve and the fastening ball, and connecting the rubber expansion joint and the fastening ball, the tightness of the rubber expansion joint connection can be improved, achieving the effect of preventing the valve and pipeline connection from loosening.

[0017] 2. By connecting the gate valve and the regulating box, and the regulating knob and the worm gear, the worm gear can rotate with the rotation of the regulating knob. Then, by connecting the worm gear and the worm wheel, and the fixed shaft and the worm wheel, the worm wheel can rotate with the rotation of the worm gear. Finally, by connecting the worm wheel and the adjusting threaded rod, and the adjusting threaded rod and the limit block, the adjusting threaded rod can rotate with the rotation of the worm wheel, causing the limit block to move. This allows the limit block to act on the surface of the gate valve handwheel, thereby restricting the position of the gate valve handwheel and preventing the valve disc from moving due to water flow impact, thus improving the flow control efficiency of the gate valve. Attached Figure Description

[0018] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0019] Figure 2 This is a frontal three-dimensional exploded view of the structure of this utility model;

[0020] Figure 3 This is a partial three-dimensional sectional view of the connection structure of the valve and the rubber flexible joint of this utility model;

[0021] Figure 4 This is a partial three-dimensional exploded view of the connection structure of the valve and rubber flexible joint of this utility model;

[0022] Figure 5 This is a three-dimensional partial sectional view of the structure of the adjustment box of this utility model.

[0023] In the diagram: 1. Shut-off valve; 2. Rubber expansion joint; 21. Circular groove; 22. Slot; 23. Mounting plate; 24. Connecting base; 25. Limit buckle; 26. Fastening ball; 3. Adjusting box; 31. Adjusting knob; 32. Worm gear; 33. Fixed shaft; 34. Worm wheel; 35. Adjusting threaded rod; 36. Limit block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 One embodiment provided by this utility model:

[0026] An anti-loosening shut-off valve, comprising:

[0027] The valve body includes the shut-off valve 1, which is an existing product and is not considered a technical protection point of this application. Therefore, it will not be described in detail here.

[0028] The buffer mechanism includes a rubber expansion joint 2, which acts on the surface of the valve 1. The rubber expansion joint 2 is made of natural rubber, nitrile rubber, and other materials to improve weather resistance and media resistance. It absorbs vibration energy through high elasticity to prevent loosening at the connection between the pipeline and the valve 1. The surface of the rubber expansion joint 2 has a circular groove 21 for connecting bolts without affecting the connection between the valve 1 and the pipeline. The surface of the rubber expansion joint 2 has a retaining groove 22 for engaging the limiting buckle 25. The surface of the valve 1 is fixedly connected to a mounting plate 23 for connecting a connecting base 24. The surface of the mounting plate 23 is fixedly connected to the connecting base 24 for connecting the limiting buckle 25. The surface of the connecting base 24 is fixedly connected to the limiting buckle 25, which engages with the retaining groove 22 through its own deformation. The surface of the valve 1 is fixedly connected to a fastening ball 26 to improve the tightness of the rubber expansion joint 2 installation.

[0029] Furthermore, the rubber expansion joint 2 is symmetrically distributed in two sets on the surface of the valve 1, and the circular grooves 21 are evenly opened on the surface of the rubber expansion joint 2. The rubber expansion joint 2 is installed on the surface of the valve 1. The rubber expansion joint 2 itself is made of natural rubber, nitrile rubber and other materials, which can improve weather resistance and media resistance. It absorbs vibration energy through high elasticity. The distribution of multiple sets of circular grooves 21 does not affect the normal connection between the flange and the bolt.

[0030] Furthermore, four sets of slots 22 are evenly distributed on the surface of the rubber flexible joint 2, and four sets of mounting plates 23 are evenly distributed on the surface of the valve 1. The four sets of mounting plates 23 are used to connect the four sets of slots 22. The slots 22 are connected by the rubber flexible joint 2 and the surface of the mounting plate 23. The rubber flexible joint 2 is installed on the surface of the valve 1, so that the slots 22 are installed on the surface of the mounting plate 23.

[0031] Furthermore, the limiting buckles 25 are evenly distributed in four groups on the surface of the connecting base 24. The connecting base 24 is connected by the surface of the mounting plate 23 and the slot 22. The limiting buckles 25 are connected by the internal engagement of the connecting base 24 and the slot 22, so that the connecting base 24 is inserted into the surface of the slot 22 and the limiting buckles 25 are deformed and engaged inside the slot 22, thereby fixing the installation position of the rubber flexible joint 2.

[0032] Furthermore, the fastening balls 26 are evenly distributed on the surface of the valve 1, and the rubber expansion joint 2 is connected to the valve 1 through the internal contact of the fastening balls 26. The even distribution of the fastening balls 26 improves the tightness of the rubber expansion joint 2 installation.

[0033] Furthermore, the limiting mechanism includes an adjusting box 3, which is fixedly connected to the surface of the gate valve 1 and is used to adjust the working height of the limiting block 36. An adjusting knob 31 is rotatably connected to the surface of the adjusting box 3 to drive the worm gear 32 to rotate. The worm gear 32 is fixedly connected to the surface of the adjusting knob 31 to drive the worm wheel 34 to rotate. A fixed shaft 33 is fixedly connected inside the adjusting box 3 to connect the worm wheel 34. The worm gear 32 is meshed with the worm wheel 34 to drive the adjusting threaded rod 35 to rotate. The adjusting threaded rod 35 is fixedly connected to the surface of the worm wheel 34 to drive the limiting block 36 to move by rotating itself. The limiting block 36 is threadedly sleeved on the surface of the handwheel of the gate valve 1 to abut against the surface of the handwheel and limit the position of the valve disc.

[0034] Furthermore, the adjustment box 3 is in two sets. The worm gear 32 is rotatably connected to the inside of the adjustment box 3 through the adjustment knob 31. The worm wheel 34 is rotatably connected to the surface of the fixed shaft 33 through the worm gear 32. Rotating the adjustment knob 31 can drive the worm gear 32 to rotate, thereby driving the worm wheel 34 to rotate synchronously. The worm gear 32 and the worm wheel 34 have a self-locking structure and will not rotate without the action of external force.

[0035] Furthermore, the adjusting threaded rod 35 is internally rotatably connected to the adjusting box 3 via the worm gear 34, and the limiting block 36 is movably connected to the adjusting box 3 via the adjusting threaded rod 35. The adjusting threaded rod 35 rotates with the rotation of the worm gear 34, thereby driving the limiting block 36 to move to the inner ring surface of the handwheel of the valve 1, thereby limiting the position of the handwheel and the valve disc. Both sets of limiting blocks 36 abut against the same side of the inner ring of the handwheel.

[0036] Working principle: When using the gate valve 1, the rubber expansion joint 2 is installed on the surface of the gate valve 1, so that the groove 22 is installed on the surface of the mounting plate 23, thereby allowing the connecting base 24 to be inserted into the surface of the groove 22. The limiting buckle 25 deforms and engages inside the groove 22, thereby fixing the installation position of the rubber expansion joint 2. The even distribution of the fastening balls 26 improves the tightness of the installation of the rubber expansion joint 2. Rotating the adjusting knob 31 can drive the worm gear 32 to rotate, thereby driving the worm wheel 34 to rotate synchronously. The adjusting threaded rod 35 rotates with the rotation of the worm wheel 34, thereby driving the limiting block 36 to move to the inner ring surface of the handwheel of the gate valve 1, thereby limiting the position of the handwheel and the valve disc.

[0037] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lock-up shut-off valve characterized by comprising: include: Valve body, including shut-off valve (1); The buffer mechanism includes a rubber flexible joint (2), which acts on the surface of the gate valve (1). The surface of the rubber flexible joint (2) is provided with a circular groove (21) and a slot (22). The surface of the gate valve (1) is fixedly connected to a mounting plate (23). The surface of the mounting plate (23) is fixedly connected to a connecting base (24). The surface of the connecting base (24) is fixedly connected to a limit buckle (25). The surface of the gate valve (1) is fixedly connected to a fastening ball (26).

2. A locking shut-off valve according to claim 1, wherein: The rubber flexible joint (2) is symmetrically distributed in two groups on the surface of the valve (1), and the circular groove (21) is evenly opened on the surface of the rubber flexible joint (2).

3. The anti-loosening shut-off valve according to claim 1, characterized in that: The slots (22) are evenly distributed in four groups on the surface of the rubber flexible joint (2), and the mounting plates (23) are evenly distributed in four groups on the surface of the valve (1). The slots (22) are connected by inserting the rubber flexible joint (2) and the mounting plates (23) into each other.

4. The anti-loosening shut-off valve according to claim 1, characterized in that: The limiting buckles (25) are evenly distributed in four groups on the surface of the connecting base (24). The connecting base (24) is connected by surface insertion of the mounting plate (23) and the slot (22). The limiting buckles (25) are connected by internal snap-fit ​​of the connecting base (24) and the slot (22).

5. The anti-loosening shut-off valve according to claim 1, characterized in that: The fastening balls (26) are evenly distributed on the surface of the valve (1), and the rubber flexible joint (2) is connected to the valve (1) through the internal abutment of the fastening balls (26).

6. The anti-loosening shut-off valve according to claim 1, characterized in that: The limiting mechanism includes an adjusting box (3), which is fixedly connected to the surface of the gate valve (1). An adjusting knob (31) is rotatably connected to the surface of the adjusting box (3). A worm gear (32) is fixedly connected to the surface of the adjusting knob (31). A fixed shaft (33) is fixedly connected inside the adjusting box (3). A worm wheel (34) is meshed with the surface of the worm gear (32). An adjusting threaded rod (35) is fixedly connected to the surface of the worm wheel (34). A limiting block (36) is threadedly sleeved onto the surface of the adjusting threaded rod (35).

7. The anti-loosening shut-off valve according to claim 6, characterized in that: The adjustment box (3) is in two sets. The worm (32) is rotatably connected to the inside of the adjustment box (3) through the adjustment knob (31). The worm wheel (34) is rotatably connected to the surface of the worm (32) and the fixed shaft (33).

8. The anti-loosening shut-off valve according to claim 6, characterized in that: The adjusting threaded rod (35) is internally rotatably connected to the adjusting box (3) via the worm gear (34), and the limiting block (36) is movably connected to the surface of the adjusting threaded rod (35) and the adjusting box (3).

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