Gate valve convenient to maintain

Abstract

The utility model discloses a gate valve convenient to maintain, which relates to the technical field of gate valves and comprises a valve body, a cover plate is detachably mounted at the top end of the valve body, limit components are mounted at four corners of the upper surface of the cover plate, a quick release component is mounted on the lower surface of the top end of the valve body, and the quick release component comprises four nuts which are uniformly distributed. The outer rings of the four nuts are fixedly sleeved with worm wheels, two double-end worms distributed in a mirror image mode are rotationally installed on the valve body, a driving shaft is rotationally installed on the valve body, first bevel gears are fixedly installed at the two ends of the driving shaft and one ends of the two double-end worms, and a rotating block is rotationally installed on one side of the top end of the valve body. And second bevel gears are fixedly mounted on one side of the rotating block and the middle of the driving shaft correspondingly, and the two second bevel gears are meshed, by arranging the quick disassembly assembly, when the valve body needs to be disassembled and maintained, a fastening bolt on the valve body can be quickly disassembled through the quick disassembly assembly, and therefore the purpose that the valve body is conveniently and quickly disassembled and maintained is achieved.

Description

Technical Field

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

[0002] A gate valve is a gate plate that opens and closes. The movement direction of the gate plate 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 plate. Usually, the sealing surface will be welded with metal materials to increase wear resistance, such as cladding 1Cr13, STL6, stainless steel, etc. The gate plates include rigid gate plates and elastic gate plates. Depending on the gate plates, gate valves are divided into rigid gate valves and elastic gate valves.

[0003] In the prior art, the valve body and the valve cover of the gate valve are generally fixed by multiple nuts. When the gate valve needs to be repaired, multiple nuts need to be removed and installed, which makes the disassembly of the gate valve inconvenient and reduces the convenience and practicality of the gate valve. In view of the above problems, the inventor proposes a gate valve that is easy to repair to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the existing gate valve is not easy to disassemble and repair; the purpose of the utility model is to provide a gate valve that is easy to repair.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions: a gate valve that is easy to maintain, comprising a valve body, a cover plate detachably mounted on the top of the valve body, limit assemblies are mounted at the four corners of the upper surface of the cover plate, a quick-release assembly is mounted on the lower surface of the top of the valve body, the quick-release assembly comprises four evenly distributed nuts, the four nuts are rotatably mounted on the valve body respectively, the outer rings of the four nuts are fixedly sleeved with worm gears, two double-headed worm gears distributed in a mirror image are rotatably mounted on the valve body, and the double-headed worm gears are meshed with the corresponding worm gears, a drive shaft is rotatably mounted on the valve body, first bevel gears are fixedly mounted on both ends of the drive shaft and one end of the two double-headed worm gears, and two adjacent first bevel gears are meshed, a rotating block is rotatably mounted on one side of the top of the valve body, a second bevel gear is fixedly mounted on one side of the rotating block and the middle of the drive shaft, and the two second bevel gears are meshed.

[0006] Preferably, the four limiting assemblies each include a fixing ring and a limiting ring, and the fixing ring is fixedly mounted on the upper surface of the cover plate, two symmetrically distributed telescopic rods are fixedly mounted in the four fixing rings, and the top end of the telescopic rod is fixedly connected to the lower surface of the limiting ring, and a spring is sleeved on the eight telescopic rods, and the top end of the spring is in contact with the lower surface of the limiting ring.

[0007] Preferably, fastening bolts are slidably inserted at the four corners of the cover plate, and the top ends of the fastening bolts can be clamped in the limiting ring.

[0008] Preferably, a turntable is rotatably mounted on the upper surface of the cover plate, a threaded rod is rotatably mounted on the lower surface of the cover plate, and the top end of the threaded rod is fixedly connected to the turntable, a gate plate is slidably mounted in the valve body, and the threaded rod is threadedly inserted in the gate plate.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. In the present invention, by providing a quick-release assembly, when the valve body needs to be disassembled for maintenance, the fastening bolts on the valve body can be quickly removed by using the quick-release assembly, thereby achieving the purpose of facilitating quick disassembly and maintenance of the valve body;

[0011] 2. In the present invention, by providing a limit assembly, when installing the valve body, the limit assembly can be used to limit the fastening bolts, making it easier for the quick-release assembly to tighten the fastening bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the overall split structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0016] Figure 4 This is a schematic diagram of the structure of the quick-release assembly of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the limit assembly of the utility model.

[0018] In the figure: 1. valve body; 2. cover plate; 3. turntable; 4. limit assembly; 41. fixing ring; 42. limit ring; 43. telescopic rod; 44. spring; 5. fastening bolt; 6. threaded rod; 7. gate; 8. quick release assembly; 81. rotating block; 82. nut; 83. worm gear; 84. double-headed worm; 85. first bevel gear; 86. second bevel gear; 87. drive shaft. DETAILED DESCRIPTION

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

[0020] Example: Figure 1-5 As shown, the utility model provides a gate valve that is easy to maintain, including a valve body 1, a cover plate 2 is detachably installed on the top of the valve body 1, and limit assemblies 4 are installed at the four corners of the upper surface of the cover plate 2. A quick-release assembly 8 is installed on the lower surface of the top of the valve body 1. The quick-release assembly 8 includes four evenly distributed nuts 82, and the four nuts 82 are rotatably installed on the valve body 1. The outer rings of the four nuts 82 are fixedly sleeved with worm gears 83. Two double-headed worms 84 distributed in a mirror image are rotatably installed on the valve body 1, and the double-headed worms 84 and the double-headed worms 84 are rotatably installed. The corresponding worm gear 83 is meshed, and a drive shaft 87 is rotatably installed on the valve body 1. Both ends of the drive shaft 87 and one end of the two double-headed worm gears 84 are fixedly installed with first bevel gears 85, and the two adjacent first bevel gears 85 are meshed. When the valve body 1 needs to be disassembled and repaired, the drive shaft 87 drives the double-headed worm gear 84 to rotate through the first bevel gear 85, and the double-headed worm gear 84 drives the worm wheel 83 to rotate, and the worm wheel 83 drives the nut 82 to rotate, so that the fastening bolt 5 is disengaged from the nut 82, thereby completing quick disassembly.

[0021] A rotating block 81 is rotatably mounted on one side of the top end of the valve body 1 , and a second bevel gear 86 is fixedly mounted on one side of the rotating block 81 and the middle of the driving shaft 87 , and the two second bevel gears 86 are meshed.

[0022] By adopting the above technical solution, the rotating block 81 is driven to rotate by a tool, and the rotating block 81 drives the driving shaft 87 to rotate through the second bevel gear 86 .

[0023] The four limiting assemblies 4 each include a fixing ring 41 and a limiting ring 42 , and the fixing ring 41 is fixedly mounted on the upper surface of the cover plate 2 .

[0024] By adopting the above technical solution, the limiting ring 42 is used to limit the fastening bolt 5 .

[0025] Two symmetrically distributed telescopic rods 43 are fixedly installed in each of the four fixing rings 41 , and the top ends of the telescopic rods 43 are fixedly connected to the bottom surface of the limiting ring 42 .

[0026] By adopting the above technical solution, pressing the limit ring 42 drives the telescopic rod 43 to retract.

[0027] The eight telescopic rods 43 are all sleeved with springs 44 , and the top ends of the springs 44 are in contact with the lower surface of the limiting ring 42 .

[0028] By adopting the above technical solution, pressing the limit ring 42 drives the telescopic rod 43 to contract and squeeze the spring 44 .

[0029] Fastening bolts 5 are slidably inserted at the four corners of the cover plate 2 , and the top ends of the fastening bolts 5 can be clamped in the limiting ring 42 .

[0030] By adopting the above technical solution, when installing the cover plate 2, first insert the fastening bolt 5 into the corresponding installation hole, then press the limiting ring 42 to drive the telescopic rod 43 to contract and squeeze the spring 44, and then rotate the fastening bolt 5 so that the fastening bolt 5 is spirally inserted into the corresponding nut 82 (so that the top end of the fastening bolt 5 is consistent with the position of the limiting groove of the limiting ring 42), loosen the limiting ring 42, and use the rebound force of the spring 44 to make the top end of the fastening bolt 5 stuck in the limiting ring 42 to limit the fastening bolt 5, and then use the quick release assembly 8 to tighten the fastening bolt 5.

[0031] A turntable 3 is rotatably mounted on the upper surface of the cover plate 2 , and a threaded rod 6 is rotatably mounted on the lower surface of the cover plate 2 , and the top end of the threaded rod 6 is fixedly connected to the turntable 3 .

[0032] By adopting the above technical solution, rotating the turntable 3 drives the threaded rod 6 to rotate.

[0033] A gate plate 7 is slidably mounted in the valve body 1 , and a threaded rod 6 is threadedly inserted in the gate plate 7 .

[0034] By adopting the above technical solution, the threaded rod 6 drives the gate plate 7 to slide up and down in the valve body 1.

[0035] Working principle: When installing the cover plate 2, first align the cover plate 2 with the mounting holes on the valve body 1, then insert the fastening bolt 5 into the corresponding mounting hole, then press the limiting ring 42 to drive the telescopic rod 43 to contract, and squeeze the spring 44, then rotate the fastening bolt 5, so that the fastening bolt 5 is spirally inserted into the corresponding nut 82 (at the same time, the top of the fastening bolt 5 is consistent with the position of the limiting groove of the limiting ring 42), loosen the limiting ring 42, use the rebound force of the spring 44 to make the top of the fastening bolt 5 stuck in the limiting ring 42, limit the fastening bolt 5, and then use the quick release assembly 8 to tighten the fastening bolt 5;

[0036] When the valve body 1 needs to be disassembled and repaired, a tool is used to drive the rotating block 81 to rotate, and the rotating block 81 drives the driving shaft 87 to rotate through the second bevel gear 86. The driving shaft 87 drives the double-headed worm 84 to rotate through the first bevel gear 85. The double-headed worm 84 drives the worm wheel 83 to rotate, and the worm wheel 83 drives the nut 82 to rotate, so that the fastening bolt 5 is disengaged from the nut 82, thereby completing quick disassembly.

[0037] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A gate valve that is easy to maintain, comprising a valve body (1), characterized in that: A cover plate (2) is detachably mounted on the top of the valve body (1), and limit assemblies (4) are mounted at four corners of the upper surface of the cover plate (2). A quick-release assembly (8) is mounted on the lower surface of the top of the valve body (1), and the quick-release assembly (8) comprises four evenly distributed nuts (82), the four nuts (82) being rotatably mounted on the valve body (1), and the outer rings of the four nuts (82) are fixedly sleeved with a worm gear (83). Two double-headed worm gears (84) distributed in a mirror image are rotatably mounted on the valve body (1), and the double-headed worm gears (84) are meshed with the corresponding worm gears (83). A drive shaft (87) is rotatably mounted on the valve body (1), and first bevel gears (85) are fixedly mounted on both ends of the drive shaft (87) and one end of the two double-headed worm gears (84), and two adjacent first bevel gears (85) are meshed.

2. A gate valve that is easy to maintain as claimed in claim 1, characterized in that: A rotating block (81) is rotatably mounted on one side of the top end of the valve body (1), and a second bevel gear (86) is fixedly mounted on one side of the rotating block (81) and the middle of the drive shaft (87), and the two second bevel gears (86) are meshed.

3. A gate valve that is easy to maintain as claimed in claim 1, characterized in that: The four limiting assemblies (4) each comprise a fixing ring (41) and a limiting ring (42), and the fixing ring (41) is fixedly mounted on the upper surface of the cover plate (2).

4. A gate valve that is easy to maintain as claimed in claim 3, characterized in that: Two symmetrically distributed telescopic rods (43) are fixedly installed in each of the four fixing rings (41), and the top ends of the telescopic rods (43) are fixedly connected to the bottom surface of the limiting ring (42).

5. A gate valve that is easy to maintain as claimed in claim 4, characterized in that: The eight telescopic rods (43) are all sleeved with springs (44), and the top ends of the springs (44) are in contact with the lower surface of the limiting ring (42).

6. A gate valve that is easy to maintain as claimed in claim 1, characterized in that: Fastening bolts (5) are slidably inserted at the four corners of the cover plate (2), and the top ends of the fastening bolts (5) can be clamped in the limiting ring (42).

7. A gate valve that is easy to maintain as claimed in claim 1, characterized in that: A turntable (3) is rotatably mounted on the upper surface of the cover plate (2), a threaded rod (6) is rotatably mounted on the lower surface of the cover plate (2), and the top end of the threaded rod (6) is fixedly connected to the turntable (3).

8. A gate valve that is easy to maintain as claimed in claim 1, characterized in that: A gate plate (7) is slidably mounted in the valve body (1), and the threaded rod (6) is threadably inserted in the gate plate (7).

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