Overflow valve

Abstract

The utility model relates to an overflow valve, and belongs to the technical field of overflow valves, in particular to an overflow valve which comprises a bottom plate, an overflow valve body, a dovetail groove, a dovetail block, a protective shell, a sliding groove and a through groove, two rectangular frames are fixedly connected to the upper surface of the bottom plate, and limiting clamping grids are arranged on the inner walls of the two rectangular frames. Fixing plates are fixedly connected to the inner walls of the two sliding grooves, limiting assemblies are arranged on the upper surfaces of the two fixing plates, and the lower surface of the protective shell is slidably and detachably connected with the upper surface of the bottom plate through the limiting assemblies; the overflow valve can be protected through the arranged protective shell capable of being rapidly disassembled, meanwhile, the use convenience is improved through the design of rapid disassembly, and the problem that in the prior art, most overflow valves installed outdoors for use do not have a shell structure for protection, and the use cost is low is solved. And the overflow valve without a protective shell structure is easily affected by an external object, so that the internal failure and damage of equipment are caused.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow valves, in particular to an overflow valve. Background Art

[0002] A relief valve is a valve that can control the pressure in a fluid system (such as hydraulic oil, water, etc.). When the fluid pressure reaches a preset value, it can automatically open and direct excess fluid to a low-pressure area, thereby maintaining a stable pressure inside the system. The relief valve is used in a hydraulic system to ensure that the system does not exceed the safe pressure range, avoiding damage to equipment or affecting work efficiency due to excessive system pressure; at the same time, in some cases, such as when the system pressure rises due to a sudden increase in workload, the relief valve can also be quickly activated to direct excess fluid out, thereby protecting the safety of the system and equipment.

[0003] In the prior art, most of the overflow valves installed outdoors do not have a shell structure for protection. Overflow valves without a protective shell structure are easily invaded by external objects (such as dust, moisture, etc.), which may cause internal failure and damage to the equipment. The erosion of moisture may cause the bolts of the overflow valve to rust, affecting the sealing. At the same time, affected by the external environment, in harsh environments such as high temperature, low temperature, humidity, and corrosion, the overflow valve without a protective shell structure will reduce its performance and shorten its service life. Therefore, a overflow valve is proposed to solve the above problems. Utility Model Content

[0004] In order to solve the above technical problems, the utility model proposes a relief valve, which can protect the relief valve by providing a quickly detachable protective shell, and the quick detachable design improves the convenience of use.

[0005] The technical solution to achieve the purpose of the utility model is: a relief valve, including a base plate, the upper surface of the base plate is fixedly connected to the relief valve body by bolts, the upper surface of the base plate is provided with two water guide slopes, the upper surface of the base plate is provided with two dovetail grooves, the inner walls of the two dovetail grooves are slidably connected with dovetail blocks, the upper surfaces of the two dovetail blocks are fixedly connected to the same protective shell, the lower surface of the protective shell is provided with two slide grooves, one side of the two slide grooves is provided with a through groove, the upper surface of the base plate is fixedly connected to two rectangular frames, the inner walls of the two rectangular frames are provided with limiting grids, the inner walls of the two slide grooves are fixedly connected with fixed plates, the upper surfaces of the two fixed plates are provided with limiting components, and the lower surface of the protective shell is slidably and detachably connected to the upper surface of the base plate through the limiting component.

[0006] In some embodiments, the limiting assembly includes a fixing box fixedly connected to the upper surface of the fixing plate, a rectangular hole is opened on one side of the fixing box, and a push rod is slidably connected to the inner wall of the rectangular hole.

[0007] In some embodiments, limiting grooves are provided on both inner walls of the fixing box, the inner walls of the two limiting grooves are slidably connected to limiting blocks, and the opposite surfaces of the two limiting blocks are fixedly connected to the same movable plate.

[0008] In some embodiments, a circular groove is formed through the upper surface of the movable plate, a fixing rod is slidably connected to the inner wall of the circular groove, and the bottom end of the fixing rod is connected to the upper surface of the push rod.

[0009] In some embodiments, a sliding hole is opened at one end of the fixed box, and a sliding rod is slidably connected to the inner wall of the sliding hole, one end of the sliding rod is connected to one side of the movable plate, and the end of the sliding rod away from the movable plate is fixedly connected to a clamping rod, and a spring is sleeved on the surface of the sliding rod, and the two ends of the spring are respectively connected to one end of the clamping rod and one end of the fixed box, and the surface of the clamping rod is adapted to the inner wall of the limiting card grid.

[0010] Compared with the prior art, the present invention has the following significant advantages:

[0011] The utility model pulls the push rod backwards, and the push rod slides in the circular groove through the fixed rod, driving the movable plate to slide to one side through the cooperation of the limit groove and the limit block, so that the slide rod drives the clamping rod to be clamped into the limit clamping grid, and the positioning of the slide rod is achieved through the elastic force of the spring, thereby achieving the limitation of the protective shell. When disassembling, the push rod is pushed forward to make the clamping rod move in the opposite direction. The relief valve body can be protected by the limitation of the protective shell.

[0012] The problem that most existing overflow valves do not have a shell structure for protection is solved. Overflow valves without a protective shell structure are easily invaded by external objects (such as dust, moisture, etc.), which may cause internal failure and damage of the equipment, and the erosion of moisture may cause the bolts of the overflow valve to rust, affecting the sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 It is a schematic diagram of a three-dimensional structure provided in one embodiment of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the limiting mechanism provided in one embodiment of the utility model;

[0016] Figure 3 It is a schematic diagram of the protective shell structure provided in one embodiment of the utility model;

[0017] Figure 4 It is a partial structural schematic diagram of a limiting mechanism provided in one embodiment of the utility model;

[0018] Figure 5 The utility model provides in one embodiment Figure 4 Enlarged structural diagram at A in the middle.

[0019] Description of reference numerals:

[0020] 1. Bottom plate; 2. Water guide slope; 3. Protective shell; 4. Overflow valve body; 5. Dovetail groove; 6. Dovetail block; 7. Rectangular frame; 8. Limiting grid; 9. Slide groove; 10. Through groove; 11. Fixed plate; 12. Push rod; 13. Limiting groove; 14. Limiting block; 15. Movable plate; 16. Circular groove; 17. Slide rod; 18. Spring; 19. Clamp rod; 20. Fixed box; 21. Fixed rod. DETAILED DESCRIPTION

[0021] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0022] The utility model provides a relief valve through improvement. The technical solution of the utility model is:

[0023] like Figure 1-3 As shown, a relief valve comprises a bottom plate 1, the upper surface of the bottom plate 1 is fixedly connected with a relief valve body 4 by bolts, the upper surface of the bottom plate 1 is provided with two water guide slopes 2, the upper surface of the bottom plate 1 is provided with two dovetail grooves 5, the inner walls of the two dovetail grooves 5 are slidably connected with dovetail blocks 6, through the design of the dovetail grooves 5 and the dovetail blocks 6, the preliminary positioning of the protective shell 3 can be achieved, and it can be stably limited in the vertical direction, the upper surfaces of the two dovetail blocks 6 are fixedly connected with the same protective shell 3, the lower surface of the protective shell 3 is provided with two slide grooves 9, one side of the two slide grooves 9 is A through slot 10 is provided, and two slide slots 9 can be matched with the rectangular frame 7. The design of the through slot 10 can ensure that there is no motion interference in the limiting of the limit card grid 8 on the card rod 19. The upper surface of the base plate 1 is fixedly connected to the two rectangular frames 7, and the inner walls of the two rectangular frames 7 are provided with limit card grids 8. The inner walls of the two slide slots 9 are fixedly connected with fixed plates 11, and the fixed plates 11 are connected to the inner walls of the slide slots 9. The protective shell 3 is designed as an integral whole. The upper surfaces of the two fixed plates 11 are provided with limit components, and the lower surface of the protective shell 3 is slidably and detachably connected to the upper surface of the base plate 1 through the limit components.

[0024] like Figure 3 and 4As shown, in one embodiment, the limit assembly includes a fixing box 20 fixedly connected to the upper surface of the fixing plate 11, a rectangular hole is opened on one side of the fixing box 20, and a push rod 12 is slidably connected to the inner wall of the rectangular hole, and the push rod 12 extends to the outside of the slide groove 9 for easy operation;

[0025] The inner walls of both sides of the fixed box 20 are provided with limiting grooves 13, and the inner walls of the two limiting grooves 13 are slidably connected to the limiting blocks 14. The movement direction of the movable plate 15 can be limited by the provided limiting grooves 13 and the limiting blocks 14, and the opposite surfaces of the two limiting blocks 14 are fixedly connected with the same movable plate 15;

[0026] A circular groove 16 is formed through the upper surface of the movable plate 15 . A fixing rod 21 is slidably connected to the inner wall of the circular groove 16 . The bottom end of the fixing rod 21 is connected to the upper surface of the push rod 12 .

[0027] like Figure 4 and 5 As shown, in one embodiment, a sliding hole is opened at one end of the fixed box 20, and a sliding rod 17 is slidably connected to the inner wall of the sliding hole. One end of the sliding rod 17 is connected to one side of the movable plate 15, and the end of the sliding rod 17 away from the movable plate 15 is fixedly connected to a clamping rod 19. A spring 18 is sleeved on the surface of the sliding rod 17, and the positioning of the sliding rod 17 is achieved by the elastic force of the spring 18, thereby achieving the limiting of the protective shell 3. The two ends of the spring 18 are respectively connected to one end of the clamping rod 19 and one end of the fixed box 20, and the surface of the clamping rod 19 is adapted to the inner wall of the limiting card grid 8.

[0028] The specific working method is as follows: when the relief valve is used, the relief valve body 4 is first fixed to the bottom plate 1 by bolts, and then the protective shell 3 is inserted into the dovetail groove 5 through the two dovetail blocks 6 set at the bottom to achieve preliminary fixation. After being inserted into the dovetail groove 5, the push rod 12 is pulled backward, and the push rod 12 slides inside the circular groove 16 through the fixing rod 21, driving the movable plate 15 to slide to one side through the cooperation of the limit groove 13 and the limit block 14, so that the slide rod 17 drives the clamping rod 19 to be clamped into the limit clamping grid 8, and the spring 18 is used to release the spring 18. The elastic force realizes the positioning of the slide rod 17, thereby realizing the limitation of the protective shell 3. When disassembling, the push rod 12 is pushed forward to make the clamping rod 19 move in the opposite direction. Through the limitation of the protective shell 3, the overflow valve body 4 can be protected, which solves the problem that most of the existing overflow valves do not have a shell structure for protection. The overflow valve without the protective shell 3 structure is easily invaded by external objects (such as dust, moisture, etc.), thereby causing internal failure and damage of the equipment, and the erosion of moisture may cause the bolts of the overflow valve to rust, affecting the sealing.

[0029] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.

Claims

1. A relief valve, comprising a bottom plate (1), the upper surface of the bottom plate (1) being fixedly connected with a relief valve body (4) by bolts, the upper surface of the bottom plate (1) being provided with two water guide slopes (2), characterized in that: The upper surface of the base plate (1) is provided with two dovetail grooves (5), the inner walls of the two dovetail grooves (5) are slidably connected with dovetail blocks (6), the upper surfaces of the two dovetail blocks (6) are fixedly connected with the same protective shell (3), the lower surface of the protective shell (3) is provided with two slide grooves (9), one side of the two slide grooves (9) is provided with a through groove (10), the upper surface of the base plate (1) is fixedly connected with two rectangular frames (7), the inner walls of the two rectangular frames (7) are provided with limiting grids (8), the inner walls of the two slide grooves (9) are fixedly connected with fixed plates (11), the upper surfaces of the two fixed plates (11) are provided with limiting components, and the lower surface of the protective shell (3) is slidably and detachably connected to the upper surface of the base plate (1) through the limiting component.

2. A relief valve according to claim 1, characterized in that: The limiting assembly comprises a fixing box (20) fixedly connected to the upper surface of the fixing plate (11), a rectangular hole is opened on one side of the fixing box (20), and a push rod (12) is slidably connected to the inner wall of the rectangular hole.

3. A relief valve according to claim 2, characterized in that: The inner walls on both sides of the fixed box (20) are provided with limiting grooves (13), the inner walls of the two limiting grooves (13) are slidably connected to limiting blocks (14), and the opposite surfaces of the two limiting blocks (14) are fixedly connected to the same movable plate (15).

4. A relief valve according to claim 3, characterized in that: A circular groove (16) is formed through the upper surface of the movable plate (15), and a fixing rod (21) is slidably connected to the inner wall of the circular groove (16), and the bottom end of the fixing rod (21) is connected to the upper surface of the push rod (12).

5. A relief valve according to claim 4, characterized in that: A sliding hole is provided at one end of the fixed box (20), and a sliding rod (17) is slidably connected to the inner wall of the sliding hole. One end of the sliding rod (17) is connected to one side of the movable plate (15), and one end of the sliding rod (17) away from the movable plate (15) is fixedly connected to a clamping rod (19). A spring (18) is sleeved on the surface of the sliding rod (17), and two ends of the spring (18) are respectively connected to one end of the clamping rod (19) and one end of the fixed box (20), and the surface of the clamping rod (19) is adapted to the inner wall of the limit clamp (8).

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