Pressure reducing valve

Abstract

The utility model discloses a pressure reducing valve, including double -way valve body, the plunger type pressure gauge is installed in double -way valve body, the plunger type pressure gauge includes the limiting frame, and the limiting frame is opened and has the observation groove, and the observation groove cover is equipped with the transparent cover, and the slide of limiting frame is equipped with the color separation column, and the top of limiting frame is provided with the elastic reset piece for the color separation column movement display gas cylinder's gas storage capacity change, and the lateral wall of color separation column is provided with a plurality of chromaticity distinct color area, the bottom of limiting frame is provided with piston rod and pressure way, and piston rod slides in pressure way, and the top one end of piston rod and the bottom of color separation column abut, the utility model discloses not using the borden pipe, and changes another kind of display mode that can change according to the air pressure or the hydraulic pressure, and the anti -bumping ability is stronger than the borden pipe shape change control pointer rotation mode of above -mentioned, and the shell deformation caused by serious bumping will also lead to pressure visual value inaccuracy, namely, the utility model will not affect the pressure value normal display after bumping.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure measuring instrument related technical field especially relates to a pressure reducing valve. BACKGROUND

[0002] The inside of general pressure reducing valve will set up pressure gauge for monitoring pressure change, the inside of pressure gauge is to adopt bourdon tube also called spring tube, utilizes pressure change to control bourdon tube to occur deformation, one side of bourdon tube is through connecting rod to drive gear rotation to be able to make the pointer on pressure gauge deflect, that is to say, the deflection of pointer is related to gear rotation, gear meshing, bourdon tube deformation.

[0003] If this kind of pressure gauge is slightly strong knock inside movement, the hairspring is easy to be disorderly, causes the inaccuracy of indicating of the watch hands, causes the damage of pressure gauge, and the anti-knock ability is relatively poor. UTILITY MODEL CONTENT

[0004] The utility model discloses a pressure reducing valve to overcome the deficiencies in the prior art.

[0005] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A pressure reducing valve, including double -way valve body, the plunger type pressure gauge is installed in double -way valve body, the plunger type pressure gauge includes the limit frame, the limit frame is opened with the observation groove, the observation groove cover is equipped with the transparent cover, the limit frame is slid in the color column in, the top of limit frame is provided with the elastic reset piece for the color column movement display gas cylinder's gas storage capacity change, the side wall of color column is provided with a plurality of color difference clear color area;The bottom of limit frame is provided with piston rod and pressure way, the piston rod is slid in pressure way, and the top one end of piston rod is in butt joint with the bottom of color column. The color column mainly has green, yellow, red mark, is used for observing the content of gas in gas tank, opens the gas cylinder valve, pressure effect, the needle holds the spring upwards, and the green mark position is topped in the white line window position, and the gas cylinder gas is sufficient, if the white line indicates the yellow mark position, it is explained that the gas is not many, and the new liquefied gas cylinder should be prepared, and if the white line is in the red position, the new liquefied gas cylinder should be replaced.

[0007] Further, the extension of the transparent cover is sealingly connected to the observation groove, and a white mark line is fixedly arranged at the middle of the transparent cover.

[0008] Further, one end of the elastic reset piece is fixedly connected to the top end of the limit frame, the other end of the elastic reset piece is fixedly connected to the color column, and the elastic reset piece is located between the top inner wall of the limit frame and the color column and is in a compressed state. The elastic reset piece can be optionally a spring.

[0009] Further, the pressure way is in communication with a gas channel or a liquid channel in the double-way valve body.

[0010] Further, the piston rod is in abutment with the color separation column after penetrating the pressure channel.

[0011] Further, the limiting frame is provided with a buffer layer, the buffer layer is wrapped on the side wall of the color separation column, and the buffer layer is provided with a through hole with the same size as the observation slot. The buffer layer is arranged to effectively prevent the color separation column from moving when it is hit, and the buffer layer is arranged non-concentrically with the limiting frame. The Bourdon tube and some precise connecting rods and parts are cancelled to avoid the pressure gauge from malfunctioning after collision.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] The utility model discloses a piston type pressure gauge, which comprises a limiting frame, a transparent cover, an observation slot, a piston rod, a color separation column, a mark line, an elastic reset piece, a color area and a pressure channel. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a schematic diagram of the internal structure of the pressure gauge of the utility model;

[0015] Fig. 2 It is a schematic diagram of the structure of the utility model.

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 1, plunger type pressure gauge;2, limiting frame;3, transparent cover;4, observation slot;5, piston rod;6, color separation column;7, mark line;8, elastic reset piece;9, color area;10, pressure channel;12, buffer layer. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the following disclosed specific embodiments.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. When the number of elements is referred to as "multiple," it can be any number of two or more. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings:

[0022] like Figs. 1-2 As shown, the structural composition and connection relationships are provided in this embodiment.

[0023] Two-way valve body

[0024] The dual-way valve body is made of high-quality metal, providing sufficient strength and sealing. It has internal air or liquid channels for connecting to external gas tanks or related fluid systems.

[0025] Plunger type pressure gauge 1

[0026] A plunger-type pressure gauge 1 is securely mounted within the two-way valve body. The limiting frame 2 within it has precise dimensions and shape for accommodating and positioning subsequent components.

[0027] Observation slot 4 and transparent cover 3

[0028] The observation slot 4 is formed on the limiting frame 2, and its size and shape meet the observation requirements. The edge of the transparent cover 3 is tightly sealed to the observation slot 4 and is made of pressure-resistant and transparent material, such as high-strength glass or special plastic. A white marking line 7 is fixedly set in the middle of the transparent cover 3. The white marking line 7 is clearly visible and is used for comparison with the position of the color separation column 6.

[0029] Color separation column 6

[0030] The sidewalls of the color-separating column 6 are provided with multiple distinct color zones 9, mainly green, yellow, and red markings. The color-separating column 6 can slide smoothly within the limiting frame 2, and its range of movement is limited by the inner wall of the limiting frame 2.

[0031] elastic return member 8

[0032] The two ends of the elastic return member 8 are fixedly connected with the top end of the limiting frame 2 and the color separation column 6 respectively. The elastic return member 8 is located between the top inner wall of the limiting frame 2 and the color separation column 6 and is in a compressed state, and pushes the color separation column 6 to remain in the initial position in the normal state. The elastic return member 8 can be optionally a high-quality spring, and the elastic coefficient thereof is accurately calculated and tested to ensure the accurate movement of the color separation column 6 when the pressure changes.

[0033] piston rod 5 and pressure channel 10

[0034] The piston rod 5 abuts against the bottom of the color separation column 6 after penetrating through the pressure channel 10. The diameter and length of the piston rod 5 are matched with the pressure channel 10, so that the piston rod 5 can stably slide in the pressure channel 10 and effectively transmit the pressure change.

[0035] buffer layer 12

[0036] The buffer layer 12 is arranged in the limiting frame 2 and is made of a material with good elasticity and wear resistance, such as rubber or silicone. The buffer layer 12 covers the side wall of the color separation column 6, and the buffer layer 12 is pre-provided with a through hole with a size consistent with the observation slot 4, so that the color separation column 6 can normally move in the limiting frame 2.

[0037] The working principle and operation mode are as follows

[0038] In the normal use state, the valve of the gas cylinder is opened, the gas pressure in the gas cylinder acts on the pressure channel 10, and is transmitted to the color separation column 6 through the piston rod 5. The color separation column 6 moves upward under the action of the pressure and overcomes the elastic force of the elastic return member 8. When the gas in the gas cylinder is sufficient, the pressure is large, the color separation column 6 is lifted to the green mark position and is aligned with the white mark line 7 in the middle of the transparent cover 3, indicating that the gas cylinder is sufficient.

[0039] With the use of the gas, the gas in the gas cylinder decreases, the pressure decreases, and the color separation column 6 moves downward under the action of the elastic return member 8. When the white mark line 7 indicates the yellow mark position, it means that the gas is not much, and a new liquefied gas cylinder should be prepared; if the white mark line 7 is at the red position, it means that the gas pressure is too low, and a new liquefied gas cylinder should be replaced immediately.

[0040] Because the buffer layer 12 is arranged, even if the color separation column 6 moves when it is subjected to a certain impact, the buffer layer 12 can effectively slow down the movement speed and impact force of the color separation column 6, prevent the color separation column 6 and the limiting frame 2 from being arranged in a non-concentric manner, and ensure the accuracy and stability of the display. At the same time, since the Bourdon tube and some precise connecting rods and parts are not used in the technical solution, the situation that the pressure gauge fails due to damage of these vulnerable parts after the collision is effectively avoided.

[0041] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described above, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the description, for those of ordinary skill in the art, without departing from the concept of the present application, can make a number of variations and improvements, these are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A pressure reducing valve comprising a two-way valve body, characterised in that: The double-way valve body is internally provided with a plunger type pressure gauge, the plunger type pressure gauge comprises a limiting frame, the limiting frame is provided with an observation slot, the observation slot is covered with a transparent cover, a color separation column is slidably arranged in the limiting frame, the top of the limiting frame is provided with an elastic reset member for moving and displaying the gas storage capacity change of the gas cylinder by the color separation column, and the side wall of the color separation column is provided with a plurality of color zones with clear color difference; the bottom of the limiting frame is provided with a piston rod and a pressure channel, the piston rod is slidably arranged in the pressure channel, and one end of the top of the piston rod abuts against the bottom of the color separation column.

2. A pressure reducing valve as claimed in claim 1, characterized in that: The extension edge of the transparent cover is sealingly connected with the observation slot, and a white mark line is fixedly arranged at the middle portion of the transparent cover.

3. A pressure reducing valve as claimed in claim 1, wherein: One end of the elastic reset member is fixedly connected with the top end of the limiting frame, the other end of the elastic reset member is fixedly connected with the color separation column, and the elastic reset member is located between the top inner wall of the limiting frame and the color separation column and is in a compressed state.

4. A pressure reducing valve as claimed in claim 1, wherein: The pressure channel is in communication with the gas channel or the liquid channel in the double-way valve body.

5. A pressure reducing valve as claimed in claim 1, wherein: The piston rod abuts against the color separation column after penetrating through the pressure channel.

6. A pressure reducing valve as defined in claim 1 wherein: A buffer layer is arranged in the limiting frame, the buffer layer covers the side wall of the color separation column, and the buffer layer is pre-provided with a through hole with the same size as the observation slot.

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