CN219573345U

CN219573345U - Pressure gauge with zeroing mechanism

Info

Publication number: CN219573345U
Application number: CN202320270267.7U
Authority: CN
Inventors: 贺铭杰; 贺军成; 赵世宏
Original assignee: Ma'anshan Mingheng Instrument Technology Co ltd
Current assignee: Ma'anshan Mingheng Instrument Technology Co ltd
Priority date: 2023-02-21
Filing date: 2023-02-21
Publication date: 2023-08-22
Anticipated expiration: 2033-02-21

Abstract

The utility model discloses a pressure gauge with a zero setting mechanism, and relates to the technical field of instrument panels. The utility model discloses a pressure gauge with a zeroing mechanism, which comprises a meter shell and a movement, wherein the upper end of the meter shell is connected with a meter frame in a clamping way, the lower end of the meter frame is provided with a dial, the dial is arranged in the meter shell through a mounting groove, the front end of the outer wall of the meter shell is connected with a threaded joint through a measuring tube, the movement is arranged at the lower end of the dial, and the movement consists of a Bowden tube and a central shaft. The zero setting mechanism has the advantages that a user can conveniently reset the pointer, the dial wheel is positioned on the outer side of the watchcase, zero setting can be realized only by manually dial wheel, the watchcase is not required to be disassembled, the Bowden tube can be protected, the dial is not easy to shake at the time of zero setting, the structure is simple, the user can easily operate the dial, the service life of the pressure gauge is prolonged, and the like.

Description

Pressure gauge with zeroing mechanism

Technical Field

The utility model relates to the technical field of instrument panels, in particular to a pressure gauge with a zero setting mechanism.

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 common in application, and almost extends to all industrial processes and scientific research fields. However, after the pressure gauge is used for a period of time, the pointer can be non-return to zero, and the reasons for the non-return to zero of the pointer are various, and the main reasons are that the pressure value in the measured object rises rapidly to cause the damage of the internal structure, so that the Bowden tube in the pressure gauge is continuously in a deformation state, and the resetting of the pointer of the pressure gauge is not facilitated.

The manometer in the existing market causes the pointer not to return to the original position after using a period, and it is very difficult to reset it, firstly, the structure of zeroing structure is complicated and is inconvenient to calibrate, need unpack the watchcase and zero, reduce work efficiency, the dial is easy to rock and is brought difficulty for the alignment of pointer when zeroing simultaneously, secondly, the mechanism of zeroing is lacking by oneself, finally can only be replaced with a new manometer, so that the life of manometer is shortened, and economic cost is increased.

Therefore, in order to solve the defects that the pressure gauge is inconvenient to zero, short in service life and the like, it is necessary to provide the pressure gauge with a zero setting mechanism.

Disclosure of Invention

The utility model aims to provide a pressure gauge with a zeroing mechanism, which has the advantages that the zeroing mechanism is convenient for a user to reset a pointer, the zeroing can be realized by only manually stirring a dial wheel arranged on the outer side of a watchcase without disassembling the watchcase, a Bowden tube can be protected, a zeroing time scale is not easy to shake, the structure is simple, the operation is easy to operate, the service life of the pressure gauge is prolonged, and the like, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the pressure gauge with the zeroing mechanism comprises a meter shell and a machine core, wherein the upper end of the meter shell is connected with a meter frame in a clamping way, the lower end of the meter frame is provided with a dial, the dial is arranged in the meter shell through a mounting groove, and the front end of the outer wall of the meter shell is connected with a threaded joint through a measuring pipe;

the machine core is installed in the calibrated scale lower extreme, and the machine core comprises Bowden tube and center pin, one end of Bowden tube runs through the watchcase and is fixed in measuring intraductal, and the other end of Bowden tube is connected with the sector gear through the connecting rod, and the side of sector gear is held and is meshed with the sun gear, and the sun gear is concentric to be fixed in on the center pin, the side of sun gear is held and is equipped with zero setting mechanism.

Preferably, the zeroing mechanism comprises a thumb wheel and a first zeroing gear, the first zeroing gear is rotationally arranged in the watch case through a first rotating shaft, a second zeroing gear is arranged at the lower end of the first zeroing gear, and the thumb wheel is meshed with the second zeroing gear.

Preferably, the first zeroing gear is meshed with the sun gear.

Preferably, one end of the dial wheel penetrates through the watch case and extends out of the watch case, and the dial wheel is rotatably arranged in the watch case through the second rotating shaft.

Preferably, a throttle valve is mounted on the measuring tube.

Preferably, one end of the Bowden tube, which is close to the measuring tube, is provided with an overflow hole in a penetrating way, and a rubber plug is sealed in the overflow hole.

Preferably, the upper end of the rubber plug is provided with a bolt, the top end of the bolt penetrates through the dial and extends to the upper end of the dial, and the dial is in threaded connection with the bolt.

Preferably, the top of the central shaft is fixed with a pointer, the pointer is positioned on the dial, and the center of the dial is penetrated with the central shaft.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the pressure gauge with the zeroing mechanism, the second zeroing gear meshed with the second zeroing gear is driven to rotate through the manual thumb wheel, the second zeroing gear is fixedly connected with the first rotating shaft, the second zeroing gear drives the first rotating shaft to rotate, the first zeroing gear is fixedly connected with the first rotating shaft, the first rotating shaft drives the first zeroing gear to rotate, the first zeroing gear drives the central gear meshed with the first zeroing gear to rotate, the central shaft is fixedly connected with the central gear, the central gear rotates to drive the central shaft to rotate, the pointer is fixed to the top end of the central shaft, and the central shaft rotates to drive the pointer to rotate;

2. according to the pressure gauge with the zeroing mechanism, the dial can be fixed through the arrangement of the mounting groove, when the dial wheel is manually shifted, the gauge shell can shake, the gauge shell shake can shake the dial installed in the gauge shell, the dial shake is unfavorable for zeroing of the pointer, and therefore the mounting groove is arranged to facilitate a user to zeroing of the electric power meter;

3. the pressure gauge with the zeroing mechanism can improve the service life of the Bowden tube through the arrangement of the throttle valve and the overflow hole, when the pressure is excessively large in the moment to cause strong impact on the Bowden tube, after the Bowden tube is continuously deformed, the throttle valve is closed first, the pressure medium is prevented from continuously entering the Bowden tube to cause deformation, then the bolt is rotated to enable the rubber plug to be separated from the overflow hole, the air pressure in the Bowden tube is reduced, then whether the Bowden tube can be automatically restored or not is watched, and if the Bowden tube can not be restored again by using the zeroing mechanism, the Bowden tube is facilitated to be maintained.

Drawings

FIG. 1 is an isometric view of the overall structure of the present utility model;

figure 2 is a view showing the internal structure of the watch case of the present utility model;

FIG. 3 is an isometric view of a mounting groove and bolt of the present utility model;

FIG. 4 is an isometric view of a cartridge of the present utility model;

fig. 5 is a structural view of the zeroing mechanism of the present utility model.

In the figure: 1. a watch case; 11. a watch frame; 12. a measuring tube; 13. a throttle valve; 14. a threaded joint; 15. a mounting groove; 16. a dial; 17. a bolt; 18. a rubber stopper; 2. a movement; 21. a bourdon tube; 22. a connecting rod; 23. a sector gear; 24. a pointer; 25. a sun gear; 26. a central shaft; 27. an overflow aperture; 3. a zeroing mechanism; 31. a first zeroing gear; 32. a second zeroing gear; 33. a first rotating shaft; 34. a thumb wheel; 35. and a second rotating shaft.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a pressure gauge with a zeroing mechanism comprises a case 1 and a movement 2, wherein the upper end of the case 1 is connected with a case frame 11 in a clamping way, the lower end of the case frame 11 is provided with a dial 16, the dial 16 is arranged in the case 1 through a mounting groove 15, the front end of the outer wall of the case 1 is connected with a screwed joint 14 through a measuring tube 12, a throttle valve 13 is arranged on the measuring tube 12,

the end of the Bowden tube 21, which is close to the measuring tube 12, is provided with an overflow hole 27 in which a rubber stopper 18 is sealed, the upper end of the rubber stopper 18 is provided with a bolt 17, the top end of the bolt 17 penetrates the dial 16 and extends to the upper end of the dial 16, and the dial 16 is in threaded connection with the bolt 17.

Specifically, the setting of the mounting groove 15 is to fix the dial 16, so as to avoid shaking the dial 16, when the pressure gauge is zeroed, shaking of the gauge shell 1 is generated, the dial 16 is mounted in the gauge shell 1, shaking of the gauge shell 1 is very easy to cause shaking of the dial 16, and shaking of the dial 16 can lead to surface inclination, which is not beneficial to alignment of the pointer 24 and further is not beneficial to zeroing of the pointer 24;

the throttle valve 13 is arranged to facilitate the return to zero of the pointer 24, when the pointer 24 can not return to zero due to continuous deformation of the Bowden tube 21 caused by the momentary excessive pressure, the throttle valve 13 is closed by the vertical horse, and the pressure medium can not flow into the Bowden tube 21 any more to deform the Bowden tube 21, so that the Bowden tube 21 can be protected and the Bowden tube 21 can be prevented from being deformed continuously;

the overflow hole 27 is provided to reduce the air pressure in the Bowden tube 21 after the continuous deformation, so that the Bowden tube 21 is recovered to be elastic, when the Bowden tube is normally used, the bolt 17 can be rotated downwards to cause the rubber stopper 18 to block the overflow hole 27, when the pointer 24 is not return to zero, the bolt 17 is rotated upwards, the rubber stopper 18 is separated from the overflow hole 27, so that the air pressure in the Bowden tube 21 is reduced, and the damage to the Bowden tube 21 caused by the continuous deformation is avoided.

In order to solve the technical problem of how to work the pressure gauge, please refer to fig. 3-4, the present embodiment provides the following technical scheme:

the movement 2 is arranged at the lower end of the dial 16, the movement 2 is composed of a Bowden tube 21 and a central shaft 26, one end of the Bowden tube 21 penetrates through the watchcase 1 and is fixed in the measuring tube 12, the other end of the Bowden tube 21 is connected with a sector gear 23 through a connecting rod 22, the side end of the sector gear 23 is meshed with a central gear 25, the central gear 25 is concentrically fixed on the central shaft 26, the top end of the central shaft 26 is fixedly provided with a pointer 24, the pointer 24 is positioned on the dial 16, and the central shaft 26 penetrates through the circle center of the dial 16.

Specifically, when the pressure value needs to be measured, the screwed joint 14 is aligned with the medium to be measured, then the pressure medium enters the Bowden tube 21 in the measuring tube 12, so as to cause the deformation of the Bowden tube 21, the free end of the Bowden tube 21 is deformed, the free end of the Bowden tube is moved to drive the connecting rod 22 to move, the connecting rod 22 is moved to drive the sector gear 23 to rotate, the sector gear 23 rotates to drive the sun gear 25 meshed with the sector gear to rotate, the central shaft 26 is fixedly connected with the sun gear 25, the central gear 25 rotates to drive the central shaft 26 to rotate, the pointer 24 is fixed at the top end of the central shaft 26 and rotates along with the central shaft 26, the rotating angle of the pointer 24 is embodied on the dial 16, and the user can observe the pressure value conveniently.

In order to solve the technical problem of how to zero the pressure gauge, please refer to fig. 1-3, the present embodiment provides the following technical scheme:

the side end of the sun gear 25 is provided with a zeroing mechanism 3, the zeroing mechanism 3 comprises a thumb wheel 34 and a first zeroing gear 31, the first zeroing gear 31 is rotatably arranged in the watch case 1 through a first rotating shaft 33, the lower end of the first zeroing gear 31 is provided with a second zeroing gear 32, and the thumb wheel 34 is meshed with the second zeroing gear 32.

The first zeroing gear 31 is engaged with the sun gear 25, and one end of the dial 34 penetrates through the case 1 and extends out of the case 1, and the dial 34 is rotatably provided in the case 1 through the second rotation shaft 35.

Specifically, through manual thumb wheel 34, thumb wheel 34 rotates to drive the second zeroing gear 32 that meshes with it to rotate, second zeroing gear 32 and first pivot 33 fixed connection, second zeroing gear 32 rotates to drive first pivot 33 to rotate, be fixed with first zeroing gear 31 on the first pivot 33, first zeroing gear 31 follows first pivot 33 and rotates together, sun gear 25 meshes with first zeroing gear 31, first zeroing gear 31 rotates to drive sun gear 25 to rotate, sun gear 25 rotates to drive center pin 26 fixed with it to rotate, center pin 26 seeks to rotate and drives pointer 24 fixed on its top, make pointer 24 return to zero.

Working principle: when the pointer 24 can not return to zero, the dial wheel 34 is manually shifted, the dial wheel 34 rotates to drive the second zeroing gear 32 meshed with the dial wheel 34 to rotate, the second zeroing gear 32 is fixed with the first rotating shaft 33, the second zeroing gear 32 rotates to drive the first rotating shaft 33 to rotate, the first zeroing gear 31 is fixed on the first rotating shaft 33, the first zeroing gear 31 rotates along with the first rotating shaft 33, the first zeroing gear 31 rotates to drive the central gear 25 meshed with the first zeroing gear to rotate, the central gear 25 rotates to drive the central shaft 26 fixed with the central gear to rotate, and the central shaft 26 rotates to drive the pointer 24 with the fixed top end to rotate, so that the pointer 24 can be zeroed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a pressure gauge that possesses zero setting mechanism, includes watchcase (1) and core (2), its characterized in that: the upper end of the watch case (1) is connected with a watch frame (11) in a clamping way, a dial (16) is arranged at the lower end of the watch frame (11), the dial (16) is arranged in the watch case (1) through a mounting groove (15), and the front end of the outer wall of the watch case (1) is connected with a screwed joint (14) through a measuring tube (12);

the movement (2) is installed in calibrated scale (16) lower extreme, and movement (2) are constituteed by Bowden tube (21) and center pin (26), one end of Bowden tube (21) runs through watchcase (1) and is fixed in survey buret (12), and the other end of Bowden tube (21) is connected with sector gear (23) through connecting rod (22), and the side meshing of sector gear (23) has sun gear (25), sun gear (25) concentric to be fixed in on center pin (26), the side of sun gear (25) is equipped with zero setting mechanism (3).

2. A pressure gauge with a zeroing mechanism according to claim 1, wherein: the zeroing mechanism (3) comprises a thumb wheel (34) and a first zeroing gear (31), the first zeroing gear (31) is rotatably arranged in the watch case (1) through a first rotating shaft (33), a second zeroing gear (32) is arranged at the lower end of the first zeroing gear (31), and the thumb wheel (34) is meshed with the second zeroing gear (32).

3. A pressure gauge with a zeroing mechanism according to claim 2, wherein: the first zero setting gear (31) is meshed with the sun gear (25).

4. A pressure gauge with a zeroing mechanism according to claim 2, wherein: one end of the dial wheel (34) penetrates through the watch case (1) and extends out of the watch case (1), and the dial wheel (34) is rotatably arranged in the watch case (1) through a second rotating shaft (35).

5. A pressure gauge with a zeroing mechanism according to claim 1, wherein: a throttle valve (13) is arranged on the measuring tube (12).

6. A pressure gauge with a zeroing mechanism according to claim 1, wherein: one end of the Bowden tube (21) close to the measuring tube (12) is penetrated with an overflow hole (27), and a rubber plug (18) is sealed in the overflow hole (27).

7. A pressure gauge with a zeroing mechanism according to claim 6, wherein: the upper end of the rubber plug (18) is provided with a bolt (17), the top end of the bolt (17) penetrates through the dial (16) and extends to the upper end of the dial (16), and the dial (16) is in threaded connection with the bolt (17).

8. A pressure gauge with a zeroing mechanism according to claim 1, wherein: the pointer (24) is fixed at the top end of the central shaft (26), the pointer (24) is positioned on the dial (16), and the central shaft (26) penetrates through the circle center of the dial (16).