CN218765791U

CN218765791U - Calibration device for air-pressure gauge of empty box

Info

Publication number: CN218765791U
Application number: CN202223252452.8U
Authority: CN
Inventors: 王晓鹏; 刘孝猛; 刘青廉
Original assignee: Liaoning North Measurement And Calibration Service Co ltd
Current assignee: Liaoning North Measurement And Calibration Service Co ltd
Priority date: 2022-12-05
Filing date: 2022-12-05
Publication date: 2023-03-28
Anticipated expiration: 2032-12-05

Abstract

The utility model relates to a barometer calibration technical field specifically is an empty box barometer calibrating device, include: the bottom plate, the top of bottom plate is provided with end jar, one side of end jar is provided with the tubulose spirit level, the opposite side of end jar is provided with the barometer head, the side of end jar is provided with down the connecting plate, the top of lower connecting plate is provided with reset spring, the top of end jar is provided with the cover, the middle part of cover is provided with observes glass, it is provided with the pneumatics meter of blank to observe glass's below, be connected with swivelling joint axle between cover and the end jar. The utility model discloses can seal the back at cover and end jar, can start the air of screw thread vacuum pump in with the end jar and take externally through the connecting pipe to change the inside atmospheric pressure of end jar, atmospheric pressure change wherein can reflect on the barometer bandeau atmospheric pressure that has adjusted is the same as atmospheric pressure change of the atmospheric pressure change of air-box barometer, alright represent this air-box barometer and show correctly.

Description

Calibration device for air-pressure gauge of empty box

Technical Field

The utility model relates to a barometer calibration technical field specifically is an empty box barometer calibrating device.

Background

The empty box barometer is an instrument for measuring atmospheric pressure by using a metal empty box as an induction element, if the accuracy of the empty box barometer is judged by a qualified supplier, whether the empty box barometer is qualified or not is checked by a calibration device, and in case of unqualified products, the empty box barometer can cause harm to a human body and generate danger in use.

Through retrieval, in an air-pocket barometer calibrating device with the publication number of CN205843889U, the utility model discloses an air-pocket barometer calibrating device, which comprises a power supply, an electromagnetic valve, a PLC, a filter and an air pressure proportional valve; one end of the filter is connected with an air source, the other end of the filter is connected with one end of the electromagnetic valve, the other end of the electromagnetic valve is connected with one end of the air pressure proportional valve, and the output end of the air pressure proportional valve is connected to the test base; the PLC is also connected with a function key input module and a touch screen display control module; the outputs of the function key input module and the touch screen display control module are connected to the input of the PLC; the output end of the air pressure proportional valve is connected with the testing base through an inflation pipeline, a pressure sensor is arranged on the inflation pipeline, and the pressure sensor is electrically connected with the PLC.

The existing calibration device for the air pressure gauge of the empty box utilizes the high-precision distance of a ball screw structure, a stepping motor is adopted to drive a screw to rotate, the screw drives a moving platform to move, a moving plate on the moving platform drives a piston rod to move accurately, the piston rod can perform fine adjustment on the precision of an inflation process in the accurate extrusion process of an air chamber, the measurement precision is improved, but the air pressure adjusting range of the piston rod is influenced by the stroke of the piston rod, the adjusting range is small, the display accuracy of the air pressure gauge of the empty box with a wide measuring range cannot be checked, and therefore the calibration device for the air pressure gauge of the empty box is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an empty box barometer calibrating device to solve the problem that proposes among the above-mentioned background art.

In order to solve the technical problem, the utility model adopts the following technical scheme: an empty box barometer calibration device, comprising:

the bottom plate, the top of bottom plate is provided with end jar, one side of end jar is provided with tubulose spirit level, the opposite side of end jar is provided with the barometer head, the side of end jar is provided with down the connecting plate, the top of lower connecting plate is provided with reset spring, the top of end jar is provided with the cover, the middle part of cover is provided with observes glass, the below of observing glass is provided with the pneumanometer of blank, be connected with swivelling joint axle between cover and the end jar, the bottom of cover is provided with the seal cover, one side of cover is provided with the upper junction plate, one side of bottom plate is provided with the screw thread vacuum pump, be connected with the connecting pipe between screw thread vacuum pump and the end jar.

Preferably, the canister further comprises:

the telescopic link, it is installed the inside of end jar, the compression piece is installed to the output of telescopic link, one side of compression piece is provided with presss from both sides tight piece, it is connected with compression spring to press from both sides between tight piece and the compression piece, one side of compression spring is provided with the reference column, one side of pressing from both sides tight piece is provided with the blotter.

Preferably, the clamping block is elastically connected with the compression block through a compression spring, and the cushion pad is in adhesive connection with the clamping block.

Preferably, the positioning column is fixedly connected with the clamping block, and the positioning column penetrates through the compression block.

Preferably, the tank cover is in adhesive connection with the sealing sleeve, and the tank cover forms a sealing structure with the bottom tank through the sealing sleeve.

Preferably, the lower connecting plate is fixedly connected with the bottom tank, and the return spring is fixedly connected with the lower connecting plate.

Preferably, the bottom tank is fixedly connected with the bottom plate, and the tubular level gauge is fixedly connected with the bottom plate.

The above description shows that, with the above technical solutions of the present application, the technical problems to be solved by the present application can be solved.

Simultaneously, through above technical scheme, the utility model discloses possess following beneficial effect at least:

the utility model can start the screw thread vacuum pump to pump out the air in the bottom tank through the connecting pipe after the tank cover and the bottom tank are closed, thereby changing the air pressure in the bottom tank, wherein the air pressure change can be reflected on the adjusted barometer head, and the barometer of the empty box can be indicated to be correctly represented as long as the air pressure change of the barometer of the empty box is the same as the air pressure change of the barometer head;

the utility model can place the bottom plate, and can judge whether the bottom tank is placed horizontally through the tubular level meter, thus reducing the influence of the placing posture on the air cell barometer;

the utility model discloses the accessible starts the telescopic link, lets press from both sides tight piece and be close to each other to press from both sides the inside of tight at end jar to the empty box barometer, and then can guarantee the stability of empty box barometer at end jar inside.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a tank cover according to the present invention;

FIG. 3 is a schematic view of the structure of the bottom tank of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a in fig. 3 according to the present invention.

In the figure: 1. a base plate; 2. a tubular level; 3. sealing sleeves; 4. a bottom tank; 5. a threaded vacuum pump; 6. a connecting pipe; 7. an empty box barometer; 8. a can cover; 9. a barometer head; 10. observing glass; 11. an upper connecting plate; 12. a clamping block; 13. a positioning column; 14. a telescopic rod; 15. compressing the block; 16. a compression spring; 17. a lower connecting plate; 18. a return spring; 19. rotating the connecting shaft; 20. a cushion pad.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Embodiment 1

As shown in fig. 1, fig. 2 and fig. 3, the present invention provides a technical solution: an empty box barometer calibration device, comprising: the bottom plate 1 is provided with a bottom tank 4 at the top of the bottom plate 1, one side of the bottom tank 4 is provided with a tubular level 2, the bottom tank 4 is fixedly connected with the bottom plate 1, the tubular level 2 is fixedly connected with the bottom plate 1, the bottom plate 1 can be placed, whether the bottom tank 4 is placed horizontally or not can be judged through the tubular level 2, and therefore the influence of the placing posture on the air box air pressure gauge 7 can be reduced; the other side of the bottom tank 4 is provided with a barometer head 9, the side of the bottom tank 4 is provided with a lower connecting plate 17, the top of the lower connecting plate 17 is provided with a return spring 18, the lower connecting plate 17 is fixedly connected with the bottom tank 4, and the return spring 18 is fixedly connected with the lower connecting plate 17; a tank cover 8 is arranged above the bottom tank 4, observation glass 10 is arranged in the middle of the tank cover 8, an empty box barometer 7 is arranged below the observation glass 10, a rotary connecting shaft 19 is connected between the tank cover 8 and the bottom tank 4, a sealing sleeve 3 is arranged at the bottom of the tank cover 8, the tank cover 8 is in adhesive connection with the sealing sleeve 3, and a sealing structure is formed between the tank cover 8 and the bottom tank 4 through the sealing sleeve 3; one side of cover 8 is provided with upper junction plate 11, one side of bottom plate 1 is provided with threaded vacuum pump 5, be connected with connecting pipe 6 between threaded vacuum pump 5 and the end jar 4, can seal the back at cover 8 and end jar 4, can start threaded vacuum pump 5 and take the air in the end jar 4 outside through connecting pipe 6, thereby change the inside atmospheric pressure of end jar 4, atmospheric pressure change wherein can reflect on the barometer head 9 of adjusting, as long as the atmospheric pressure change of air box barometer 7 is the same with the barometer head 9 area atmospheric pressure change, alright express that this air box barometer 7 represents correctly.

Example two

The scheme in the first embodiment is further described in the following with reference to specific working modes, which are described in detail in the following:

as shown in fig. 1, 2 and 4, as a preferred embodiment, in addition to the above-mentioned embodiments, further, an expansion link 14 is installed inside the bottom tank 4, a compression block 15 is installed at an output end of the expansion link 14, a clamping block 12 is installed at one side of the compression block 15, a compression spring 16 is connected between the clamping block 12 and the compression block 15, a positioning column 13 is installed at one side of the compression spring 16, the positioning column 13 is fixedly connected with the clamping block 12, and the positioning column 13 penetrates through the compression block 15; one side of pressing from both sides tight piece 12 is provided with blotter 20, presss from both sides tight piece 12 and passes through between compression spring 16 and the compression piece 15 for elastic connection, and blotter 20 and press from both sides between the tight piece 12 for adhesive connection, start telescopic link 14, let press from both sides tight piece 12 and be close to each other to press from both sides tight 7 of blank box barometer in the inside of end jar 4, and then can guarantee the stability of blank box barometer 7 in end jar 4 inside.

In summary, the following can be found:

the utility model is directed to the technical problem: the air pressure adjusting range of the piston rod is influenced by the stroke of the piston rod, the adjusting range is small, and the display accuracy of the empty box air pressure meter with a wide measuring range cannot be checked; the technical scheme of each embodiment is adopted. Meanwhile, the implementation process of the technical scheme is as follows:

firstly, a bottom plate 1 is placed, the horizontal state of the bottom plate 1 is adjusted through a tubular level gauge 2, then an empty box barometer 7 is placed in a bottom tank 4, a telescopic rod 14 is started to push a compression block 15 to move, so that clamping blocks 12 are close to each other, the empty box barometer 7 is clamped, a cushion pad 20 can protect the surface of a shell of the empty box barometer 7, the counter force of a compression spring 16 can push the clamping blocks 12 to clamp the empty box barometer 7, and a positioning column 13 can play a role in guiding the clamping blocks 12; next, the tank cover 8 is closed around the rotation connecting shaft 19, the upper connecting plate 11 and the lower connecting plate 17 are connected by bolts, and the bottom tank 4 and the tank cover 8 are closed, and the seal cartridge 3 can fill the gap between the bottom tank 4 and the tank cover 8; then, starting the threaded vacuum pump 5, pumping out the air in the bottom tank 4 through the connecting pipe 6, thereby changing the air pressure in the bottom tank 4, wherein the air pressure change can be reflected on the adjusted barometer head 9, and observing through the observation glass 10, so long as the air pressure change of the empty box barometer 7 is compared with the barometer head 9, whether the empty box barometer 7 is accurate can be judged; finally, the bolt on the upper connecting plate 11 can be unscrewed, the threaded vacuum pump 5 is reversely rotated, and after the internal air pressure and the external air pressure are balanced, the return spring 18 can push the upper connecting plate 11 to move upwards, so that the tank cover 8 can be opened conveniently.

Through above-mentioned setting, above-mentioned technical problem can be solved certainly to this application, simultaneously, realizes following technological effect:

the utility model can start the screw thread vacuum pump 5 to draw the air in the bottom tank 4 out through the connecting pipe 6 after the tank cover 8 and the bottom tank 4 are closed, thereby changing the air pressure in the bottom tank 4, wherein the air pressure change can be reflected on the adjusted barometer head 9, and the barometer 7 can be indicated to be correctly expressed as long as the air pressure change of the barometer 7 is the same as the air pressure change of the barometer head 9;

the utility model can place the bottom plate 1, and can judge whether the bottom tank 4 is placed horizontally through the tubular level meter 2, thus reducing the influence of the placing posture on the air pressure gauge 7 of the air box;

the utility model discloses the accessible starts telescopic link 14, lets press from both sides tight piece 12 and be close to each other to press from both sides tight inside at end jar 4 to empty box barometer 7, and then can guarantee the stability of empty box barometer 7 at end jar 4 inside.

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

Claims

1. An empty box barometer calibrating device, comprising:

the improved multifunctional inspection well is characterized by comprising a base plate (1), wherein a bottom tank (4) is arranged at the top of the base plate (1), a tubular level gauge (2) is arranged on one side of the bottom tank (4), an air pressure gauge head (9) is arranged on the other side of the bottom tank (4), a lower connecting plate (17) is arranged on the side face of the bottom tank (4), a reset spring (18) is arranged at the top of the lower connecting plate (17), a tank cover (8) is arranged above the bottom tank (4), an observation glass (10) is arranged in the middle of the tank cover (8), an empty box air pressure gauge (7) is arranged below the observation glass (10), a rotary connecting shaft (19) is connected between the tank cover (8) and the bottom tank (4), a sealing sleeve (3) is arranged at the bottom of the tank cover (8), an upper connecting plate (11) is arranged on one side of the tank cover (8), a threaded vacuum pump (5) is arranged on one side of the base plate (1), and a connecting pipe (6) is connected between the threaded vacuum pump (5) and the bottom tank (4).

2. An empty box barometer calibration device according to claim 1, wherein the canister (4) further comprises:

the telescopic link (14), it is installed the inside of end jar (4), compression piece (15) are installed to the output of telescopic link (14), one side of compression piece (15) is provided with presss from both sides tight piece (12), it is connected with compression spring (16) to press from both sides between tight piece (12) and compression piece (15), one side of compression spring (16) is provided with reference column (13), one side of pressing from both sides tight piece (12) is provided with blotter (20).

3. An empty box barometer calibration device according to claim 2 wherein the clamp block (12) is resiliently connected to the compression block (15) by a compression spring (16) and the cushion (20) is adhesively connected to the clamp block (12).

4. The calibrating device for the air pressure gauge of the empty box according to claim 2, wherein the positioning column (13) is fixedly connected with the clamping block (12), and the positioning column (13) penetrates through the inside of the compression block (15).

5. The empty box barometer calibrating device of claim 1, wherein the tank cover (8) is adhesively connected with the sealing sleeve (3), and the tank cover (8) forms a sealing structure with the bottom tank (4) through the sealing sleeve (3).

6. An empty box barometer calibrating device according to claim 1, wherein the lower connecting plate (17) is fixedly connected with the bottom tank (4), and the return spring (18) is fixedly connected with the lower connecting plate (17).

7. An empty box barometer calibration device according to claim 1, wherein the bottom tank (4) is fixedly connected to the bottom plate (1) and the tubular level (2) is fixedly connected to the bottom plate (1).