Pressure valve

Abstract

The utility model discloses a pressure valve which comprises a valve seat and a valve cover, the valve cover is installed on the valve seat, a fluid channel is arranged in the middle of the valve seat, the upper portion of the fluid channel is in a cone shape, a plurality of trapezoid plug cores are arranged at the cone-shaped position above the fluid channel, and the trapezoid plug cores are sequentially connected from top to bottom. The lower end of the trapezoidal plug core is sleeved with a protective shell, an opening is formed in the top of the valve deck, a drainage hole is formed in the side face of the valve deck, the area of the opening is larger than the cross sectional area of the trapezoidal plug core, and a pair of connecting frames are arranged on the two sides, above the opening, of the valve deck. The device further comprises a connecting cover matched with the opening, the connecting cover is detachably connected with the pair of connecting frames, a telescopic sliding rod is arranged at the bottom of the connecting cover, a pressure spring is arranged on the telescopic sliding rod in a sleeving mode, and the two ends of the pressure spring are connected with the connecting cover and the trapezoidal plug core respectively.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a pressure valve. Background Technology

[0002] Pressure valves are designed to open by reaching a specific pressure. Existing pressure valves mainly consist of a valve body, valve cover, valve disc, and spring. As existing technology, Chinese patent CN203442254U proposes a pressure valve with a structure of multiple trapezoidal plugs. This structure allows the remaining plugs to continue functioning even if one plug leaks. However, in this technical solution, the multiple trapezoidal plugs still collide and wear against the inner wall of the valve body during sealing, resulting in a limited service life. Furthermore, replacement after wear is inconvenient. The plugs are only connected by pressure springs, leading to unstable guidance and easy displacement, resulting in poor sealing performance. Utility Model Content

[0003] The purpose of this invention is to provide a pressure valve to solve the problems mentioned in the background section.

[0004] To solve the above technical problems, this utility model adopts the following technical solution: a pressure valve, including a valve seat and a valve cover, the valve cover being installed on the valve seat, a fluid channel being provided in the middle of the valve seat, the upper part of the fluid channel being conical, a plurality of trapezoidal plugs being provided at the upper conical part of the fluid channel, the plurality of trapezoidal plugs being connected vertically, a protective shell being fitted at the lower end of the trapezoidal plugs, an opening being provided at the top of the valve cover, a drain hole being provided on the side of the valve cover, the area of ​​the opening being larger than the cross-sectional area of ​​the trapezoidal plugs, a pair of connecting brackets being provided on both sides above the opening of the valve cover; it also includes a connecting cover adapted to the opening, the connecting cover being detachably connected to the pair of connecting brackets, a telescopic slide rod at the bottom of the connecting cover, a pressure spring being fitted on the telescopic slide rod, the two ends of the pressure spring being connected to the connecting cover and the trapezoidal plugs respectively.

[0005] By adopting the above technical solution, the trapezoidal plug core is covered with a protective sleeve to protect it, which can slow down the wear rate of the trapezoidal plug core and extend its service life. The telescopic slide rod and pressure spring are designed to keep the trapezoidal plug core stable during vertical displacement and prevent it from deviating. This allows for better sealing and cooperation with the fluid channel. When the protective sleeve needs to be replaced, the connecting cover and connecting bracket are disassembled, and the connecting cover is removed. At the same time, the trapezoidal plug core can be taken out and the protective sleeve replaced, reducing maintenance costs.

[0006] As a further optimization of this utility model, the top of the connecting cover is provided with a mounting bracket, and both sides of the mounting bracket are provided with grooves. A connecting spring and a locking block are provided in the grooves. The end face of the locking block is arc-shaped, and the connecting bracket is provided with a locking hole. The locking block elastically passes through the locking hole.

[0007] Using the above technical solution, when the mounting bracket and the connecting bracket are connected, the connecting cover is aligned with the opening, and the connecting cover is pressed down to fit tightly with the opening. At the same time, the locking block is aligned with the locking hole after being squeezed by the connecting bracket. Under the elastic action of the connecting spring, the locking block passes through the locking hole, thereby connecting the mounting bracket and the connecting bracket and fixing the connecting cover and the opening.

[0008] As a further optimization of this utility model, the side wall of the connecting cover is provided with a sealing ring.

[0009] By adopting the above technical solutions, the sealing ring improves the sealing performance between the connecting cover and the opening.

[0010] As a further optimization of this utility model, the top of the mounting bracket is provided with a T-shaped handle.

[0011] As a further optimization of this utility model, the inner wall of the valve cover on the side away from the drain hole is arc-shaped.

[0012] By adopting the above technical solutions, the impact force of water flow on the inner wall of the valve cover can be reduced, and the water flow can be guided towards the drain hole.

[0013] The beneficial effects of this utility model are as follows: by covering the trapezoidal plug core with a protective sleeve, the wear rate of the trapezoidal plug core can be slowed down, extending its service life. The combination of the telescopic slide rod and the pressure spring ensures that the trapezoidal plug core remains stable during vertical displacement, preventing deviation and allowing for better sealing with the fluid channel. When the protective sleeve needs to be replaced, the connecting cover and connecting bracket can be disassembled, and the connecting cover can be removed to take out the trapezoidal plug core and replace the protective sleeve, thus reducing maintenance costs. Attached Figure Description

[0014] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 2 for Figure 1 Enlarged view of the area circled in the middle. The labels in the diagram mean: 11, valve seat; 111, fluid passage; 12, valve cover; 121, drain hole; 13, trapezoidal plug; 2, opening; 3, protective sleeve; 41, telescopic slide rod; 42, pressure spring; 5, connecting cover; 51, mounting bracket; 511, groove; 61, connecting spring; 62, locking block; 7, connecting bracket; 71, locking hole; 8, handle; 9, sealing ring. Detailed Implementation

[0016] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0017] See appendix Figure 1-2 The present embodiment of the present utility model further includes: a pressure valve, including a valve seat 11 and a valve cover 12, the valve cover 12 is installed on the valve seat 11, the valve seat 11 has a fluid channel 111 in the middle, the upper part of the fluid channel 111 is conical, and a plurality of trapezoidal plugs 13 are provided at the conical part above the fluid channel 111, and the plurality of trapezoidal plugs 13 are connected in sequence from top to bottom by connecting columns.

[0018] The lower end of the trapezoidal plug 13 is fitted with a protective shell, which can be made of rubber.

[0019] The valve cover 12 has an opening 2 on its top and a drain hole 121 on its side. The area of ​​the opening 2 is larger than the cross-sectional area of ​​the trapezoidal plug core 13. The valve cover 12 has a pair of connecting brackets 7 on both sides above the opening 2. It also includes a connecting cover 5 that is adapted to the opening 2. The connecting cover 5 and the pair of connecting brackets 7 are detachably connected. Specifically, the connecting cover 5 has a mounting bracket 51 on its top. The mounting bracket 51 has grooves 511 on both sides. A connecting spring 61 and a retaining clip are installed in the grooves 511. Block 62, the end face of the locking block 62 is arc-shaped, the connecting frame 7 is provided with locking hole 71, the locking block 62 elastically passes through the locking hole 71, when the mounting frame 51 is connected to the connecting frame 7, the connecting cover 5 is aligned with the opening 2, the connecting cover 5 is pressed down and tightly fits the opening 2, at the same time the locking block 62 is squeezed by the connecting frame 7 and aligned with the locking hole 71, the locking block 62 passes through the locking hole 71 under the elastic action of the connecting spring 61, thereby connecting the mounting frame 51 and the connecting frame 7, realizing the fixation between the connecting cover 5 and the opening 2;

[0020] The bottom of the connecting cover 5 has a telescopic slide rod 41, and a pressure spring 42 is sleeved on the telescopic slide rod 41. The two ends of the pressure spring 42 are connected to the connecting cover 5 and the trapezoidal plug core 13, respectively.

[0021] Furthermore, the side wall of the connecting cover 5 is provided with a sealing ring 9, which improves the sealing between the connecting cover 5 and the opening 2.

[0022] Furthermore, the top of the mounting bracket 51 is provided with a T-shaped handle 8;

[0023] Furthermore, the inner wall of the valve cover 12 on the side away from the drain hole 121 is arc-shaped, which can reduce the impact force of water flow on the inner wall of the valve cover 12 and guide the water flow towards the drain hole 121.

[0024] The principle of this utility model is as follows: by covering the trapezoidal plug 13 with a protective sleeve 3, the wear rate of the trapezoidal plug 13 can be slowed down and its service life extended.

[0025] The telescopic slide bar 41 is configured to cooperate with the pressure spring 42 so that the trapezoidal plug core 13 maintains stable guidance when it moves up and down, is not prone to displacement, and can better seal with the fluid channel 111.

[0026] When the protective cover 3 needs to be replaced, the connecting cover 5 and the connecting bracket 7 are disassembled: press the two side blocks 62 and the corresponding holes 71 to disengage, thereby unlocking the mounting bracket 51 and the connecting bracket 7. Then, pull the mounting bracket 51 upward by holding the lever 8 to remove the connecting cover 5. At the same time, the trapezoidal plug 13 can be taken out to replace the protective cover 3, reducing maintenance costs.

[0027] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A pressure valve comprising a valve seat (11) and a valve cover (12) mounted on the valve seat (11), the valve seat (11) having a fluid passage (111) in the middle, the upper part of the fluid passage (111) being tapered, and a plurality of trapezoidal plugs (13) being connected in sequence on the tapered upper part of the fluid passage (111), characterized in that, The lower end of the trapezoidal plug core (13) is sleeved with a protective shell, the top of the valve cover (12) is provided with an opening (2), the side of the valve cover (12) is provided with a drain hole (121), the area of the opening (2) is larger than the cross-sectional area of the trapezoidal plug core (13), and the upper sides of the valve cover (12) at the opening (2) are provided with a pair of connecting frames (7); further comprising a connecting cover (5) matched with the opening (2), the connecting cover (5) is detachably connected with the pair of connecting frames (7), the bottom of the connecting cover (5) is provided with a telescopic slide rod (41), the telescopic slide rod (41) is sleeved with a pressure spring (42), and the two ends of the pressure spring (42) are connected with the connecting cover (5) and the trapezoidal plug core (13) respectively.

2. A pressure valve according to claim 1, characterized in that The top of the connecting cover (5) is provided with a mounting frame (51), recesses (511) are formed in the two sides of the mounting frame (51), connecting springs (61) and clamping blocks (62) are arranged in the recesses (511), the end surface of the clamping block (62) is arc-shaped, the connecting frame (7) is provided with a clamping hole (71), and the clamping block (62) elastically penetrates through the clamping hole (71).

3. A pressure valve according to claim 1, wherein The side wall of the connecting cover (5) is provided with a sealing ring (9).

4. A pressure valve according to claim 2, wherein The top of the mounting frame (51) is provided with a T-shaped handle (8).

5. A pressure valve according to claim 1, wherein The inner wall of the side of the valve cover (12) away from the drain hole (121) is arc-shaped.

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