CN114993547A

CN114993547A - Straight tube type eccentric pressure gauge

Info

Publication number: CN114993547A
Application number: CN202210394822.7A
Authority: CN
Inventors: 陈芳明
Original assignee: Shaoxing Kedun Instrument Co ltd
Current assignee: Shaoxing Kedun Instrument Co ltd
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-09-02

Abstract

The invention discloses a straight tube type eccentric pressure gauge, which comprises a meter shell, and a Bourdon tube, a movement, a dial, a pointer shaft and a pointer which are arranged in the meter shell, wherein the Bourdon tube is arranged below the dial, the Bourdon tube is connected with a valve seat fixed on the meter shell, the free end of the Bourdon tube is connected with the pointer shaft through a linkage mechanism, the pointer is arranged at the top end of the pointer shaft, a connecting tube is arranged on the valve seat, and the connecting tube and a valve body are positioned on the same axis.

Description

Straight tube type eccentric pressure gauge

Technical Field

The invention relates to the technical field of pressure gauges, in particular to a straight-tube type eccentric pressure gauge.

Background

The pressure gauge is a meter which takes an elastic element as a sensitive element and measures and indicates the pressure higher than the ambient pressure, is very commonly applied and almost extends to all the fields of industrial processes and scientific researches. The method is widely available in the fields of heating power pipe networks, oil and gas transmission, water and gas supply systems, vehicle maintenance plants and shops and the like. Especially in the industrial process control and technical measurement process, the elastic sensitive element of the mechanical pressure gauge has the characteristics of high mechanical strength, convenient production and the like, so that the mechanical pressure gauge is more and more widely applied.

The existing pressure gauge is provided with a valve seat and a connecting pipe, the valve seat and the connecting pipe are generally integrally formed for ensuring air tightness, the valve seat is generally eccentrically arranged with the pressure gauge in the traditional pressure gauge, and the connecting pipe is generally arranged at the axis position of the pressure gauge for convenient installation and use, so that a pipeline is required to be additionally arranged between the connecting pipe and the valve seat for connecting the two; due to the arrangement mode, the whole volume of the valve seat is large, the material cost is high, and the valve seat is irregular in shape, high in processing difficulty and high in processing cost.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a straight-tube type eccentric pressure gauge which can reduce the whole volume of a valve seat, thereby reducing the material cost and being convenient to process.

The purpose of the invention is realized by adopting the following technical scheme:

the utility model provides a straight tube type eccentric pressure gauge, includes the watchcase and install in bourdon tube, core, calibrated scale, pointer axle and pointer in the watchcase, the below of calibrated scale is provided with bourdon tube, bourdon tube with be fixed in the disk seat of watchcase is connected, bourdon tube's free end with the pointer axle passes through the link gear and connects, the pointer install in pointer axle top, be provided with the connecting pipe on the disk seat, the connecting pipe with the disk seat is in on the same axis.

Further, the outer surface of the connecting pipe is provided with external threads.

Further, a capillary tube is installed on the connecting tube.

Furthermore, two fixing holes are formed in the valve seat, the connecting pipe is arranged between the two fixing holes, and through holes corresponding to the two fixing holes are formed in the watch case.

Furthermore, an annular groove is formed in the valve seat, and the connecting pipe is arranged in the circle center of the annular groove.

Furthermore, the linkage mechanism comprises a connecting rod, a sector gear and a sector shaft, the sector gear is rotatably arranged on the sector shaft and meshed with a transmission gear assembled on the pointer shaft, the other end, opposite to the other end with teeth, of the sector gear is hinged to the connecting rod, and the other end of the connecting rod is hinged to the free end of the Bourdon tube.

Furthermore, an oil filling hole is formed in the side face of the watch case, and an oil plug is installed in the oil filling hole.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the connecting pipe and the watch case are eccentrically arranged, so that the whole volume of the valve seat can be reduced, materials are saved, and compared with the traditional mode that the valve seat and the connecting pipe are eccentrically arranged, the mode that the connecting pipe is arranged on the same axis of the valve seat is convenient for processing and manufacturing the valve seat, the manufacturing cost is saved, and the processing efficiency is improved.

Drawings

FIG. 1 is a schematic view of a straight tube type eccentric pressure gauge according to the present invention;

FIG. 2 is a sectional view of a straight tube type eccentric pressure gauge according to the present invention;

FIG. 3 is a schematic structural view of a valve seat of a straight tube type eccentric pressure gauge according to the present invention;

FIG. 4 is a schematic view of another angle of the valve seat of the straight tube type eccentric pressure gauge according to the present invention;

FIG. 5 is a partial cross-sectional view of a straight tube type eccentric pressure gauge valve seat according to the present invention;

the figure is as follows: 1. a watch case; 2. a bourdon tube; 3. a movement; 4. a dial scale; 5. a pointer; 6. a valve seat; 601. a fixing hole; 602. an annular groove; 7. a connecting pipe; 8. a connecting rod.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

As shown in figures 1-5, the invention discloses a straight tube type eccentric pressure gauge, which comprises a meter shell 1, a Bourdon tube 2, a movement 3, a dial 4, a pointer 5 shaft and a pointer 5, wherein the Bourdon tube 2 is arranged below the dial 4, the Bourdon tube 2 is connected with a valve seat 6 fixed on the meter shell 1, the free end of the Bourdon tube 2 is connected with the pointer 5 shaft through a linkage mechanism, the pointer 5 is arranged at the top end of the pointer 5 shaft, a connecting tube 7 is arranged on the valve seat 6, and the connecting tube 7 and the valve seat 6 are on the same axis.

In use, the connecting tube 7 is connected to the apparatus so that gas in the apparatus can pass through the connecting tube 7, the valve seat 6 and into the bourdon tube 2 in order to deform the bourdon tube 2 so that the pointer 5 is driven to rotate by the linkage mechanism and the user can determine the air pressure in the machine by the position of the pointer 5 on the dial 4.

According to the invention, the connecting pipe 7 and the watch case 1 are eccentrically arranged, so that the whole volume of the valve seat 6 can be reduced, materials are saved, and compared with the traditional mode that the valve seat 6 and the connecting pipe 7 are eccentrically arranged, the mode that the connecting pipe 7 is arranged on the same axis of the valve seat 6 is convenient for processing and manufacturing the valve seat 6, the manufacturing cost is saved, and the processing efficiency is improved.

Simultaneously, for the convenience of being connected of connecting pipe 7 and equipment, this application is provided with the external screw thread at the surface of connecting pipe 7 to make connecting pipe 7 be connected with equipment through the mode that the screw thread was screwed.

In addition, a capillary tube may be attached to the connection tube 7, and the connection tube 7 may be connected to the device through the capillary tube, which facilitates the installation.

Preferably, in order to facilitate the installation of the sealing ring, the valve seat 6 is provided with an annular groove 602, and the connecting pipe 7 is arranged at the center of the annular groove 602, so that a gap between the capillary pipe and the connecting pipe 7 can be sealed when the capillary pipe is installed, and gas leakage is prevented.

Simultaneously for making things convenient for the fixed of disk seat 6, two fixed orificess 601 have been seted up on disk seat 6 to this application to be provided with the through-hole that corresponds with two fixed orificess 601 on watchcase 1. The user can utilize the bolt to pass through hole and fixed orifices 601 to link disk seat 6 and watchcase 1 as an organic whole, simultaneously, for make full use of disk seat 6 upper space, reduce disk seat 6's volume, save material, this application sets up connecting pipe 7 between two fixed orifices 601.

Meanwhile, in order to facilitate the filling of oil, an oil filling hole is formed in the side face of the watch case 1, and in order to prevent the sealing of the oil, an oil plug is further arranged in the oil filling hole.

Preferably, the linkage comprises a connecting rod 8, a sector gear and a sector shaft, the sector gear is rotatably arranged on the sector shaft, the sector gear is meshed with a transmission gear assembled on the pointer 5 shaft, the sector gear is hinged with the connecting rod 8 relative to the other end provided with teeth, and the other end of the connecting rod 8 is hinged with the free end of the bourdon tube 2.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. The utility model provides a straight tube type eccentric pressure gauge, include watchcase (1) and install in bourdon tube (2), core (3), calibrated scale (4), pointer (5) axle and pointer (5) in watchcase (1), the below of calibrated scale (4) is provided with bourdon tube (2), bourdon tube (2) with be fixed in disk seat (6) of watchcase (1) are connected, the free end of bourdon tube (2) with pointer (5) axle is connected through the link gear, pointer (5) install in pointer (5) axle top, its characterized in that: the valve seat (6) is provided with a connecting pipe (7), and the connecting pipe (7) and the valve seat (6) are positioned on the same axis.

2. The straight tube type eccentric pressure gauge according to claim 1, wherein: the outer surface of the connecting pipe (7) is provided with external threads.

3. A straight tube type eccentric pressure gauge according to claim 1, characterized in that: and a capillary tube is arranged on the connecting tube (7).

4. The straight tube type eccentric pressure gauge according to claim 1, wherein: two fixing holes (601) are formed in the valve seat (6), the connecting pipe (7) is arranged between the two fixing holes (601), and through holes corresponding to the two fixing holes (601) are formed in the watch case (1).

5. The straight tube type eccentric pressure gauge according to claim 1, wherein: an annular groove (602) is formed in the valve seat (6), and the connecting pipe (7) is arranged at the circle center of the annular groove (602).

6. A straight tube type eccentric pressure gauge according to claim 1, characterized in that: the linkage mechanism comprises a connecting rod (8), a sector gear and a sector shaft, the sector gear is rotatably arranged on the sector shaft and meshed with a transmission gear assembled on the pointer (5) shaft, the other end of the sector gear, which is provided with teeth, is hinged with the connecting rod (8), and the other end of the connecting rod (8) is hinged with the free end of the Bourdon tube (2).

7. The straight tube type eccentric pressure gauge according to claim 1, wherein: an oil filling hole is formed in the side face of the watch case (1), and an oil plug is installed in the oil filling hole.