CN-121678018-B - Fluid pressure measuring device

CN121678018BCN 121678018 BCN121678018 BCN 121678018BCN-121678018-B

Abstract

The invention provides a fluid pressure measuring device, which comprises a mounting main body, a marking piece and a piston assembly. The installation main body is provided with an inlet, an installation cavity and an outlet which are communicated, and the installation cavity is provided with an opening. The mark piece is installed in the installation cavity of the installation main body, one end of the mark piece is a mark end, the mark piece extends out of the opening, the other end of the mark piece senses the end, a telescopic hole is formed in the mark piece, the telescopic hole extends into the mark end, and an observation portion with scales is arranged on the periphery of the mark end. The piston assembly comprises a piston and an elastic piece, wherein the piston is telescopically arranged in the telescopic hole, one end of the piston is a head part and is communicated with the inlet, the other end of the piston is a tail part, the piston extends into the area where the observation part is located, and the elastic piece is a piston restoring force. The fluid pressure measuring device provided by the invention has the advantages of simple structure, easiness in forming and assembling, low cost and high measuring precision.

Inventors

Qu Jieci
SHI XIANBING
SHEN JUNFA

Assignees

开平市亿展阀芯有限公司

Dates

Publication Date: 20260512
Application Date: 20260211

Claims (8)

1. A fluid pressure measuring device comprising a mounting body, a marker and a piston assembly; the installation main body is provided with an inlet, an installation cavity and an outlet which are communicated, and the installation cavity is provided with an opening; The mark piece is arranged in the mounting cavity of the mounting main body, one end of the mark piece is a mark end, extends out of the opening, is provided with an induction end at the other end, and is provided with a telescopic hole, the telescopic hole extends into the mark end, the periphery of the mark end is provided with observation parts, the observation parts are distributed along the telescopic hole, and scales are arranged beside the observation parts; The piston assembly comprises a piston and an elastic piece, wherein the piston is telescopically arranged in the telescopic hole, one end of the piston is provided with a head part and is communicated with the inlet and directly receives fluid pressure, and the other end of the piston is provided with a tail part and extends into the area where the observation part is positioned; The head of the piston senses the fluid pressure at the inlet and further contracts into the telescopic hole under the action of the fluid pressure, and the tail of the piston moves in the range of the observation part and indicates the fluid pressure value through the scale; The fluid pressure measuring device further comprises a rotating block for controlling flow, wherein the rotating block is rotatably arranged in the mounting cavity and positioned between the inlet and the outlet, the rotating block is provided with a communication channel, the water outlet end of the communication channel is communicated with the outlet of the mounting main body, and the water inlet end is communicated or isolated from the inlet of the mounting main body through rotation; The rotary block comprises a static valve plate and a movable valve plate, the static valve plate is relatively and fixedly arranged in the mounting cavity and is provided with a water passing hole communicated with the inlet and the outlet, the movable valve plate is rotatably arranged in the mounting cavity and is clung to the static valve plate, the rotary block is provided with an adjusting hole, the inlet is communicated with or blocked from the water passing hole through rotation, and the identification end of the identification piece also forms an operation handle end.
2. A fluid pressure measuring device according to claim 1, wherein the marking end of the marking member is provided with a vent hole, the vent hole is communicated with the telescopic hole, and a sealing ring is arranged between the periphery of the marking member and the inner wall of the mounting cavity so as to seal the opening.
3. A fluid pressure measuring device according to claim 2, wherein the observation portion is formed of a plurality of observation ports, the observation ports are communicated with the telescopic holes and also form the ventilation holes, or the marking member is a transparent member, or the marking member is made of a transparent material in the observation portion.
4. A fluid pressure measuring device according to claim 1, wherein the piston comprises a piston head and a piston rod, the piston head forming a head, the expansion and contraction bore being stepped with a smaller diameter end extending to the marking end of the marking element.
5. The fluid pressure measuring device of claim 4, wherein the piston head is provided with a sealing ring on the outer periphery thereof, the piston rod is provided with a U-shaped sealing ring on the outer periphery thereof, the U-shaped sealing ring is abutted against the bottom end of the larger section of the diameter of the telescopic hole and is opened towards the piston head, and the elastic member is a spring, is sleeved on the outer periphery of the piston rod and is arranged between the U-shaped sealing ring and the piston head.
6. A fluid pressure measuring device as defined in claim 1, wherein said inlet and communication channels are in at least two sets.
7. A fluid pressure measuring device as claimed in claim 1, wherein the outlet has a pressure ring disposed therein, and the marker and piston assembly are sequentially received in the mounting body through the outlet and pressed by the pressure ring.
8. A fluid pressure measuring device according to claim 1, wherein the mounting body is provided with a relief vent in the periphery thereof, the flag is provided with a relief hole in the periphery thereof, the relief hole communicates with the relief vent, the relief hole communicates with the expansion hole, the relief hole communicates with the inlet in a state where the piston is compressed by fluid pressure to a limit position, and the relief hole is blocked from the inlet by the piston in a state where the piston is not in the limit position.

Description

Fluid pressure measuring device Technical Field The invention relates to the technical field of fluid pressure measurement, in particular to a fluid pressure measurement device. Background The fluid pressure detection device is widely applied to industrial production and daily life. The conventional fluid pressure detecting device mostly adopts a mechanical structure such as a spring matched with a gear or an elastic film, and usually needs to be matched with a mechanical display dial. The design is complex in structure and high in manufacturing cost, and the problem of single function is common. In order to overcome the technical limitation, the invention provides a novel fluid pressure measurement structure, which aims to simplify the structure of the device, reduce the cost and expand the functionality of the device. Disclosure of Invention The invention provides a fluid pressure measuring structure with a simple structure for solving the technical problems. A fluid pressure measuring device comprising a mounting body, a flag, and a piston assembly, wherein, The installation main body is provided with an inlet, an installation cavity and an outlet which are communicated, and the installation cavity is provided with an opening. The marking piece is installed in the installation cavity of the installation main body, one end of the marking piece is a marking end, the marking piece extends from the opening, the other end of the marking piece is an induction end and is provided with a telescopic hole, the telescopic hole extends into the marking end, the periphery of the marking end is provided with an observation portion, the observation portion is distributed along the telescopic hole, scales are arranged beside the observation portion, and a user can conveniently check the measured fluid pressure value. The piston assembly comprises a piston and an elastic piece, wherein the piston is telescopically arranged in a telescopic hole, one end of the piston is a head part and is communicated with the inlet, the piston is directly subjected to fluid pressure, the other end of the piston is a tail part and extends into an area where the observation part is located, and when the end part moves to a certain scale value, the size of the current fluid pressure is indicated. The elastic piece is also arranged in the telescopic hole and provides a restoring force for the piston to move towards the sensing end, so that the situation that the piston cannot be restored to measure the fluid pressure in real time is avoided. The fluid pressure measuring device provided by the invention is arranged in the fluid channel, wherein the inlet of the mounting main body is communicated with the feeding channel in the fluid channel, the outlet of the mounting main body is communicated with the discharging channel in the fluid channel, after the fluid pressure measuring device is arranged, the head of the piston senses the fluid pressure at the inlet and further contracts into the telescopic hole under the action of the fluid pressure, and the tail of the piston moves in the range of the observation part and indicates the fluid pressure value through the scale. The fluid pressure measuring device provided by the invention adopts a piston type structure with the fluid pushing, and when the fluid pressure measuring device is used, the fluid pressure can be directly displayed through the simple reciprocating movement distance of the piston, on one hand, the fluid pressure measuring device has the advantages of simple structure, easiness in forming and assembling and low cost, and on the other hand, the fluid pressure flow can be prevented from being counteracted without other conversion structures, so that the measuring precision is improved. In addition, it should be pointed out that the fluid pressure measuring device provided by the invention also has an anti-freezing function, when the fluid pressure measuring device is applied to a liquid channel and the liquid is frozen, the piston can provide more containing space for the frozen liquid by compressing the elastic piece, so that the situation of freezing crack of a pipeline or the measuring device is avoided, and the functions of the pressure measuring device are further enriched. Preferably, in order to avoid the end of flexible hole is suppressed and is influenced the flexible removal of piston, the sign end of sign spare is equipped with the air vent, air vent and flexible hole intercommunication, be equipped with the sealing washer between the inner wall of periphery and the installation cavity of sign spare, in order to shutoff the opening avoids revealing. Preferably, the observation portion is formed by a plurality of observation ports, the observation ports are communicated with the telescopic holes, the ventilation holes are also formed, the structure is simple, the structure is easy to obtain, when the device is used, the corresponding scale value is the currently detected