Gate valve easy to maintain

Abstract

The utility model discloses a gate valve easy to maintain, which comprises an upper valve body, a lower valve body is arranged at the bottom of the upper valve body, a connecting device is arranged on the outer wall of the upper valve body and the outer wall of the lower valve body, and the connecting device comprises two clamping plates respectively arranged on the outer wall of the upper valve body and the outer wall of the lower valve body; the multiple limiting rods are installed on the outer walls of the two clamping plates correspondingly; the multiple inclined plates are installed on the inner sides of the multiple limiting rods correspondingly and abut against the outer walls of the two clamping plates; and the two lead screws are in threaded connection with the inner walls of the multiple inclined plates correspondingly. According to the gate valve easy to maintain, the upper valve body and the lower valve body are connected together through the connecting device, more bolts are not used in the connecting mode, the valve can be rapidly opened for maintenance, the connecting mode is simple and convenient, and the maintenance efficiency is improved. Therefore, the flashboard and the connecting part in the gate valve are easy to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of gate valves, in particular to a gate valve that is easy to maintain. Background Art

[0002] A gate valve is a gate that opens and closes. The movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened or fully closed, and cannot be adjusted or throttled. The gate valve is sealed by the contact between the valve seat and the gate. Usually, the sealing surface is welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate disc has rigid gate discs and elastic gate discs. Depending on the gate disc, the gate valve is divided into rigid gate valves and elastic gate valves.

[0003] When the current gate valve is in use, a connecting flange is used to connect the gate valve and the water pipe. The staff twists the handwheel to rotate, and the handwheel drives the valve plate to move downward through the valve stem bolt. The valve plates on both sides rotate slightly outward and press against the inside of the valve, sealing the valve plate to the inside of the valve, and controlling whether the medium inside the water pipe can flow through the gate valve;

[0004] During the use of the current gate valve, the gate valve and the water pipe are connected together by bolts and bolt flanges, and the valve plate is used to seal the inside of the valve. The valve plate will wear out during long-term use, causing leakage of the medium. The valve needs to be opened regularly for maintenance and repair. Since the upper valve body and the lower valve body of the valve are connected together by multiple bolts, this connection method is relatively cumbersome, making it difficult to maintain the gate plate part inside the gate valve. Utility Model Content

[0005] In view of the deficiencies in the prior art, the present invention provides a gate valve that is easy to maintain, which solves the problem that during use of the current gate valve, the gate valve and the water pipe are connected together by bolts and bolt flanges, and the internal sealing of the valve is achieved by the valve plate. The valve plate will wear out during long-term use, resulting in leakage of the medium, and the valve needs to be opened regularly for maintenance and repair. Since the upper valve body and the lower valve body of the valve are connected together by multiple bolts, this connection method is relatively cumbersome, making it difficult to maintain the gate plate part inside the gate valve.

[0006] To achieve the above-mentioned objectives, the utility model is implemented through the following technical solutions: a gate valve that is easy to maintain, comprising an upper valve body, a lower valve body is installed at the bottom of the upper valve body, and the outer walls of the upper valve body and the lower valve body are provided with a connecting device, wherein the connecting device comprises: two clamping plates, which are respectively installed on the outer walls of the upper valve body and the lower valve body; a plurality of limiting rods are provided, which are respectively installed on the outer walls of the two clamping plates; a plurality of inclined plates are provided, which are respectively installed on the inner sides of the plurality of limiting rods and are tightly abutted against the outer walls of the two clamping plates; two screw rods are provided, which are respectively threadedly connected to the inner walls of the plurality of inclined plates; a plurality of limiting blocks are provided, which are all movably connected to the outer walls of the plurality of inclined plates and are movably connected to the outer walls of the plurality of limiting rods; wherein the screw rod is used to pull the inclined plates on both sides to move inward, and the inclined plates squeeze the clamping plates to move inward to connect the upper valve body and the lower valve body together.

[0007] Preferably, the inner wall of the upper valve body is threadedly connected to a valve stem bolt, the outer wall of the valve stem bolt is threadedly connected to a rotating block, and the outer wall of the rotating block is rotatably connected to the inner wall of the upper valve body through a pin shaft.

[0008] Preferably, the inner wall of the lower valve body is movably connected to a cylinder, the top of the cylinder is fixedly connected to the bottom of the valve stem bolt, the bottom of the cylinder is installed with a horizontal plate, and the inner wall of the horizontal plate is rotatably connected to the gate plate through a pin shaft.

[0009] Preferably, the outer side of the gate plate is tightly pressed against the inner wall of the lower valve body.

[0010] Preferably, the outer wall of the rotating block is provided with an adjustment device, and the adjustment device includes: a rotating rod, which is rotatably connected to the outer wall of the rotating block through a bearing; a slide, which is movably connected to the outer wall of the rotating rod; a spring, which is detachably connected to the outer wall of the rotating rod and detachably connected to the inner wall of the slide; two bending rods are provided, both of which are installed on the outer wall of the slide and are engaged with the inner wall of the rotating block; wherein, the movement of the slide compresses the spring, and at the same time, the slide drives the bending rod to no longer be engaged with the outer wall of the rotating block, so that the use position of the rotating rod can be adjusted.

[0011] Beneficial effects

[0012] The utility model provides a gate valve that is easy to maintain. It has the following beneficial effects: in this gate valve, after the rotating block rotates, the cylinder is driven to move by the valve stem bolt, and the cylinder adjusts the use position of the gate plate through the cross plate. The upper valve body and the lower valve body are connected together by a connecting device. This connection method does not use a large number of bolts, and the valve can be quickly opened for maintenance and repair. This connection method is relatively simple, making it easy to maintain the gate plate and connecting parts inside the gate valve.

[0013] When the rotation of the rotating rod is restricted, the rotating rod is restored to its original position through the adjustment device and reconnected with the rotating block. The rotating rod can twist the rotating block in a relatively narrow position to open or close the valve, thereby improving the applicability of the valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 Schematic diagram of the flat cross-section structure;

[0016] Figure 3 for Figure 2 Schematic diagram of the connection structure of the middle splint, the limit rod and the inclined plate;

[0017] Figure 4 for Figure 2 Schematic diagram of the connection structure of the transfer rod, slide cylinder and spring.

[0018] In the figure: 1. Upper valve body; 2. Lower valve body; 3. Connecting device; 31. Clamp; 32. Limit rod; 33. Inclined plate; 34. Screw rod; 35. Limit block; 4. Valve stem bolt; 5. Turn block; 6. Adjusting device; 61. Turn rod; 62. Slide; 63. Spring; 64. Bending rod; 7. Cylinder; 8. Horizontal plate; 9. Gate. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] By those skilled in the art, the components in this case are connected in sequence. The specific connection and operation sequence should refer to the following working principle. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process.

[0021] During the use of the current gate valve, the gate valve and the water pipe are connected together by bolts and bolt flanges, and the valve plate is used to seal the inside of the valve. The valve plate will wear out during long-term use, resulting in leakage of the medium. The valve needs to be opened regularly for maintenance and repair. Since the upper valve body and the lower valve body of the valve are connected together by multiple bolts, this connection method is relatively cumbersome, making it difficult to maintain the gate part inside the gate valve.

[0022] In view of this, the utility model provides a gate valve that is easy to maintain. After the rotating block rotates, the cylinder is driven to move by the valve stem bolt. The cylinder adjusts the use position of the gate through the cross plate. The upper valve body and the lower valve body are connected together through a connecting device. This connection method does not use a large number of bolts, and the valve can be quickly opened for maintenance and repair. This connection method is relatively simple, making it easy to maintain the gate and connecting parts inside the gate valve.

[0023] Example 1: By Figure 1 、 2 The cam 32 is a kind of cam 32, and the cam 32 of the cam 32 is the cam 32 of the cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32. The cam 32 is a kind of cam 32, and the cam 32 is a kind of cam 32.

[0024] In the specific implementation process, it is worth noting that the twisting screw 34 pulls the inclined plates 33 on both sides to move inward, and the inclined plates 33 squeeze the clamping plates 31 to move inward, and the clamping plates 31 connect the upper valve body 1 and the lower valve body 2 together;

[0025] Furthermore, the inner wall of the upper valve body 1 is threadedly connected to a valve stem bolt 4, the outer wall of the valve stem bolt 4 is threadedly connected to a rotating block 5, and the outer wall of the rotating block 5 is rotatably connected to the inner wall of the upper valve body 1 through a pin shaft;

[0026] In the specific implementation process, it is worth noting that the upper valve body 1 limits the valve stem bolt 4, and when the rotating block 5 rotates, the valve stem bolt 4 moves upward;

[0027] Furthermore, a cylinder 7 is movably connected to the inner wall of the lower valve body 2, the top of the cylinder 7 is fixedly connected to the bottom of the valve stem bolt 4, a horizontal plate 8 is installed at the bottom of the cylinder 7, and the inner wall of the horizontal plate 8 is rotatably connected to a gate plate 9 through a pin shaft;

[0028] In the specific implementation process, it is worth noting that the lower valve body 2 limits the cylinder 7. When the valve stem bolt 4 moves, it drives the horizontal plate 8 at the bottom of the cylinder 7 to move upward, and the horizontal plate 8 drives the gate plate 9 to move. The raised part at the bottom of the horizontal plate 8 can limit the inward movement of the gate plate 9, preventing the water flow from pushing the gate plate 9 inward and affecting its normal use.

[0029] Furthermore, the outer side of the gate plate 9 is tightly pressed against the inner wall of the lower valve body 2;

[0030] In the specific implementation process, it is worth noting that the gate plate 9 seals the lower valve body 2;

[0031] Specifically, when using this easy-to-maintain gate valve, the upper and lower clamping plates 31 are installed on the outer walls of the upper valve body 1 and the lower valve body 2, and the bottom limit block 35 is pushed to be sleeved on the outer wall of the limit rod 32. At the same time, the inclined plate 33 is fitted on the outer wall of the clamping plate 31. The staff twists the screw rod 34 to rotate, and the screw rod 34 pulls the inclined plate 33 to move inward. The inclined plate 33 squeezes the two clamping plates 31 inward to move, thereby fixing the upper valve body 1 and the lower valve body 2 together. When the rotating block 5 rotates, the cylinder 7 is driven to move downward through the valve stem bolt 4, and the cylinder 7 drives the gate plate 9 on the cross plate 8 to move outward, and the gate plate 9 is pressed tightly against the inside of the lower valve body 2.

[0032] Example 2: By Figure 1 、 2 As shown in Figures 4 and 5, an adjustment device 6 is provided on the outer wall of the rotating block 5. The adjustment device 6 includes: a rotating rod 61, which is rotatably connected to the outer wall of the rotating block 5 through a bearing; a slide 62, which is movably connected to the outer wall of the rotating rod 61; a spring 63, which is detachably connected to the outer wall of the rotating rod 61 and detachably connected to the inner wall of the slide 62; two bent rods 64 are provided, both of which are mounted on the outer wall of the slide 62 and are engaged with the inner wall of the rotating block 5; wherein, the slide 62 moves to compress the spring 63, and at the same time, the slide 62 drives the bent rod 64 to no longer be engaged with the outer wall of the rotating block 5, so that the use position of the rotating rod 61 can be adjusted;

[0033] In the specific implementation process, it is worth noting that when the slide 62 moves, the spring 63 is compressed, and at the same time, the slide 62 drives the bent rod 64 to no longer be engaged with the rotating block 5, so that the use position of the rotating rod 61 can be adjusted;

[0034] Specifically, on the basis of the above-mentioned embodiment 1, the staff pushes the slide 62 to move, the slide 62 compresses the spring 63, and at the same time the slide 62 drives the bent rod 64 to no longer be engaged with the rotating block 5, so that the use position of the rotating rod 61 can be adjusted. After loosening the slide 62, the spring 63 in the compressed state helps the bent rod 64 on one side of the slide 62 to be engaged into the interior of the rotating block 5, and the rotating rod 61 twists the rotating block 5 to rotate. When the rotating rod 61 is used in a narrow position, it can be reset after rotating a small angle, and continue to drive the rotating block 5 to rotate in one direction.

[0035] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0036] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gate valve that is easy to maintain, comprising an upper valve body (1), characterized in that: The bottom of the upper valve body (1) is provided with a lower valve body (2), and the outer walls of the upper valve body (1) and the lower valve body (2) are provided with a connecting device (3), and the connecting device (3) comprises: Two clamping plates (31) are provided and respectively mounted on the outer walls of the upper valve body (1) and the lower valve body (2); A plurality of limiting rods (32) are provided and are respectively mounted on the outer walls of the two clamping plates (31); A plurality of inclined plates (33) are provided, which are respectively installed on the inner sides of the plurality of limiting rods (32) and are tightly pressed against the outer walls of the two clamping plates (31); Two screw rods (34) are provided and are respectively threadedly connected to the inner walls of the plurality of inclined plates (33); A plurality of limit blocks (35) are provided, each of which is movably connected to the outer walls of the plurality of inclined plates (33) and is also movably connected to the outer walls of the plurality of limit rods (32); The screw rod (34) is used to pull the inclined plates (33) on both sides to move inward, and the inclined plates (33) squeeze the clamping plates (31) to move inward to connect the upper valve body (1) and the lower valve body (2) together.

2. The gate valve according to claim 1, characterized in that: The inner wall of the upper valve body (1) is threadedly connected to a valve stem bolt (4), the outer wall of the valve stem bolt (4) is threadedly connected to a rotating block (5), and the outer wall of the rotating block (5) is rotatably connected to the inner wall of the upper valve body (1) via a pin shaft.

3. The gate valve according to claim 1, characterized in that: The inner wall of the lower valve body (2) is movably connected to a cylinder (7), the top of the cylinder (7) is fixedly connected to the bottom of the valve stem bolt (4), and a horizontal plate (8) is installed at the bottom of the cylinder (7), and the inner wall of the horizontal plate (8) is rotatably connected to a gate plate (9) through a pin shaft.

4. The gate valve according to claim 3, characterized in that: The outer side of the gate plate (9) is in tight contact with the inner wall of the lower valve body (2).

5. The gate valve according to claim 2, characterized in that: The outer wall of the rotating block (5) is provided with an adjusting device (6), and the adjusting device (6) comprises: A rotating rod (61) is rotatably connected to the outer wall of the rotating block (5) via a bearing; A slide cylinder (62) movably connected to the outer wall of the rotating rod (61); a spring (63) detachably connected to the outer wall of the rotating rod (61) and detachably connected to the inner wall of the slide cylinder (62); Two bent rods (64) are provided, both mounted on the outer wall of the slide cylinder (62) and engaged with the inner wall of the rotating block (5); The movement of the slide (62) compresses the spring (63), and at the same time the slide (62) drives the bent rod (64) to no longer engage with the outer wall of the rotating block (5), thereby adjusting the use position of the rotating rod (61).

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