A pressure fluid passage regulating device

Abstract

The application discloses a pressure fluid passage adjusting device, which comprises a valve body, a gate body arranged in the valve body, a blunt blade structure arranged at the bottom end of the gate body, a pressure applying body connected to the upper end of the valve body, a through hole arranged at the lower end of the valve body, and a pipeline arranged in the through hole, wherein a plate cavity is arranged in the middle of the pipeline. The pressure fluid adjusting device is free of dynamic sealing or static sealing, the force adjusting component does not have any contact with liquid, the liquid is not polluted, the liquid leakage is avoided, the device is safe and efficient, the structure is simple, the device is convenient to use and maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fluid regulation, in particular to a pressure fluid passage regulating device. BACKGROUND

[0002] Various valves are widely used in fluid pipelines to regulate fluid flow. The moving parts of most valves are in contact with fluid, thus requiring dynamic sealing structure. These dynamic sealing materials may cause pollution to fluid, or leakage due to sealing failure. In a few low-pressure and small-pipeline fluid conditions such as in laboratories, a flow regulating device called water stop clamp can be seen. The device clamps an elastic rubber tube between two metal sheets, and adjusts the distance between the two metal sheets to squeeze the elastic tube, thereby regulating the flow of fluid in the pipeline. This device can avoid the problem of sealing structure required by conventional valves, but requires a soft and elastic material pipeline such as a rubber tube, and thus is limited to low-pressure fluid such as municipal water systems. In some special situations, such as a requirement of 300 kg / cm2 high pressure and 2 mL / min low flow, without contact with sealing materials or dynamic sealing wear particles, existing devices are difficult to meet the requirements.

[0003] Therefore, it is necessary to invent a pressure fluid passage regulating device to solve the above problems. SUMMARY

[0004] The present application aims to provide a pressure fluid passage regulating device to solve the problems presented in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a pressure fluid passage regulating device, comprising a valve body, a gate body provided inside the valve body, a blunt blade structure provided at the bottom end of the gate body, a pressure applying body connected to the upper end inside the valve body, a through hole provided at the lower end of the valve body, and a pipeline provided inside the through hole. The pressure applying body provided in the valve body can contact the gate body provided in the valve body and apply pressure to the gate body. The gate body cannot rotate but can move up and down, can contact the plate cavity placed on the bottom surface of the through hole and apply pressure to the plate cavity. The bottom blade edge of the gate body can be fixed to form a full-span cross pressure relationship with the contacted plate cavity. The material of the plate cavity is a hard material that is generally considered to be inelastic and difficult to compress and deform, such as stainless steel or inelastic hard plastic.

[0006] Preferably, the pressure applying body is a bolt structure, and the bolt is connected to the valve body.

[0007] Preferably, the gate body cannot rotate but can move up and down. When the bolt pressure applying body rotates to apply force to the gate body, the gate body will not rotate due to the rectangular body space fitted in the valve body, thereby always maintaining the cross relationship of the bottom blade edge of the gate body to the plate cavity.

[0008] Preferably, the main body of the gate body is a rectangular body, the top end of which is a top tip structure with a small area in the middle, and the bottom end of which is a blunt blade structure of 0.1-5mm, which can form a full-span cross-section pressing relationship with the plate cavity, the top end of which is a top tip structure with a small area in the middle, which can reduce the rotational friction received by the gate body and also help to evenly distribute the force, and the bottom end of which is a blunt blade structure of 0.1-5mm, which can not only play a role in ensuring effective regulation of fluid volume with large pressure, but also avoid or reduce the damage to the plate cavity.

[0009] Preferably, the plate cavity is formed by directly flattening a metal pipe, or by welding two metal sheets together and welding them with the fluid pipeline. The flattened sheet or directly used sheet has a certain bending ability. When the pressure fluid arrives, the pressure fluid will push away the overlapping closed metal sheet, so that the fluid can flow through the control area. Since there is a force adjusting structure outside the plate cavity to control the size of the gap allowed by the fluid to push away in the plate cavity, the flow of the fluid can be regulated.

[0010] Technical effects and advantages of the present application:

[0011] The pressure fluid regulating device of the present application has no dynamic seal or static seal, and the force adjusting component does not have any contact with the liquid, so it will not pollute the liquid and will not cause liquid leakage. It is safe, efficient, simple in structure, convenient to use and maintain. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0013] Figure 2 It is a schematic diagram of the cross-section.

[0014] Figure 3 It is a schematic diagram of the shape of the gate body. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0016] The present application provides a pressure fluid passage regulating device as shown in the figure, characterized in that: it comprises a valve body 1, the inside of the valve body 1 is provided with a gate body 10, the bottom end of the gate body 10 is provided with a blunt blade structure 20, the inside of the valve body 1 is connected with a pressure body 2 at the upper end, the lower end of the valve body 1 is provided with a through hole 3, the inside of the through hole 3 is provided with a pipeline 5, and the pipeline 5 is provided with a plate cavity 4 in the middle.

[0017] Further, in the above technical solution, the pressure applying body 2 is a bolt structure, and the valve body 1 is screwed;

[0018] Further, in the above technical solution, the gate body 10 is not rotatable but movable up and down;

[0019] Further, in the above technical solution, the main body of the gate body 10 is a rectangular body, the top end of which is a top tip structure with a small area in the middle, and the bottom is a blunt blade structure 20 with a thickness of 0.1-5mm, which can form a full-span cross-section pressure relationship with the plate cavity 4;

[0020] Further, in the above technical solution, the plate cavity 4 is made of a hard material that is generally considered to be inelastic and difficult to compress and deform, and the plate cavity 4 is cast by a mold, or directly flattened by a pipeline 5, or two metal sheets or hard plastic sheets are welded together and welded with the pipeline 5.

[0021] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the above-mentioned embodiments of the present application have been described in detail, for those skilled in the art, it still can be modified to the technical solution recorded in the above-mentioned embodiments, or equivalent replacement of some technical features, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the present application.

Claims

1. A pressure fluid passage regulating device characterized by: Including valve body (1), the inside of valve body (1) is equipped with gate body (10), the bottom end of gate body (10) is equipped with blunt blade structure (20), the inside upper end of valve body (1) is connected to pressurizing body (2), the lower end of valve body (1) is equipped with through hole (3), the inside of through hole (3) is equipped with pipeline (5), the middle part of pipeline (5) is equipped with plate cavity (4); The pressurizing body (2) is a bolt structure, and is screwed to the valve body (1); The gate body (10) is not rotatable but movable up and down; The main body of the gate body (10) is a rectangular body, the top end of which is a top tip structure with a small area in the middle, and the bottom end is a blunt blade structure (20) with a thickness of 0.1-5mm, which can form a full-span cross-pressure relationship with the plate cavity (4); The plate cavity (4) is made of a non-elastic and difficult-to-compress hard material, and is cast by a mold, directly flattened by the pipeline (5), or welded with two metal sheets or hard plastic sheets and the pipeline (5).

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