A pressure gauge movement and its working method

Abstract

The present application discloses a pressure gauge movement and its working method, including a housing. At the bottom of the inner wall of the housing, an installation groove is provided. Inside the installation groove, a bottom plate is arranged. Inside the housing, a first cavity and a second cavity are provided. The first cavity is annular, and the second cavity communicates with the first cavity and the installation groove. An airbag is placed inside the first cavity, and a plug board is placed inside the second cavity. One side of the airbag close to the installation groove is fixedly connected to the plug board. For the pressure gauge movement described in the present application, through the provided installation groove, airbag, plug board and jack, the pressure gauge movement can be assembled quickly. The bottom plate is placed in the installation groove to limit the movement of the movement and prevent it from sliding. Then, a pump is used. The air outlet pipe of the pump is fixed to the inflation valve, and air is pumped into the airbag. The airbag inflates and expands, extruding the plug board from the second cavity, so that the plug board is inserted into the jack to fix the bottom plate.

Description

Technical Field

[0001] This application relates to the technical field of pressure gauge movement, and particularly relates to a pressure gauge movement and its working method. Background Technique

[0002] A pressure gauge refers to an instrument that uses an elastic element as a sensitive element to measure and indicate the pressure higher than the ambient pressure. It is extremely widely used and almost covers all industrial processes and scientific research fields. Especially in the industrial process control and technical measurement processes, due to the high mechanical strength and convenient production of the elastic sensitive element of the mechanical pressure gauge, the mechanical pressure gauge has been more and more widely used. The working principle of the pressure gauge is through the elastic deformation of the sensitive element inside the gauge, such as Bourdon tubes, diaphragm boxes, and bellows, etc., and then the conversion mechanism of the movement inside the gauge conducts the pressure deformation to the pointer, causing the pointer to rotate to display the pressure.

[0003] However, there are some problems with an existing pressure gauge movement. First of all, the existing pressure gauge movement needs to be fixed inside the watch case with screws. During the assembly process, it is easy for the pressure gauge movement to slide relative to the watch case, resulting in low assembly efficiency. Secondly, after the pressure gauge is used for a long time, the fixing screws will rust, making the movement prone to shaking, resulting in measurement errors in the pressure gauge. In view of this, we propose a pressure gauge movement. Summary of the Invention

[0004] The technical problem to be solved by this application is to overcome the existing defects and can effectively solve the problems in the background technique.

[0005] To achieve the above object, the technical solution adopted by this application is as follows:

[0006] A working method of a pressure gauge movement. When the air pressure measured by the pressure gauge is relatively large, it will cause the movement to vibrate. The airbag plays a certain buffering role to avoid damage to the movement;

[0007] When the pressure gauge is used for a long time, the air pressure in the airbag will decrease. By rotating the knob, the air supplement rod is driven to rotate into the housing, so that the air inlet hole of the air supplement rod is located inside the air inlet pipe, and the air outlet hole of the air supplement rod is located inside the air supplement valve. The air flow passing through the air inlet pipe enters the airbag through the air delivery channel and the air supplement valve to supplement the gas consumed by the airbag, firmly fixing the bottom plate under the movement, ensuring the accuracy of the pressure gauge measurement, and avoiding rusting without using screws for fixing.

[0008] A pressure gauge movement, including a housing, is characterized in that: an installation groove is provided at the bottom of the inner wall of the housing, a bottom plate is arranged inside the installation groove, a first cavity and a second cavity are provided inside the housing, the first cavity is annular, the second cavity communicates with the first cavity and the installation groove, an airbag is placed inside the first cavity, a plug board is placed inside the second cavity, one side of the airbag close to the installation groove is fixedly connected with the plug board, an inflation valve is fixedly installed at the top of the airbag, a gas supplementing valve is fixedly installed at the tail of the airbag, and the shape and size of the installation groove are the same as those of the bottom plate.

[0009] As a further improvement of the present application, jacks are provided on the side surface of the bottom plate, the number of the jacks is the same as that of the plug boards, and the opening size of the jacks matches the plug boards.

[0010] As a further improvement of the present application, an air inlet pipe is installed through one side of the housing, one end of the air inlet pipe located inside the housing is fixedly connected with a Bourdon tube, and one end of the Bourdon tube far from the air inlet pipe is fixedly connected with a connecting rod.

[0011] As a further improvement of the present application, a knob is provided at the bottom of the housing, a gas supplementing rod is fixedly connected to the top of the knob, one end of the gas supplementing rod far from the knob penetrates through the gas supplementing valve to reach the bottom of the air inlet pipe, an air delivery channel, an air inlet hole and an air outlet hole are provided inside the gas supplementing rod, the air inlet hole and the air outlet hole are both communicated with the air delivery channel, and the air inlet hole is located above the air outlet hole. Threads are provided on the outer wall of the gas supplementing rod, and the gas supplementing rod is threadedly connected with the housing.

[0012] As a further improvement of the present application, a rotating shaft is rotatably connected to the middle of the upper surface of the bottom plate, a pointer is fixedly installed at the top of the rotating shaft, a sector gear is fixedly connected to the outside of the rotating shaft, a fixed rod is fixedly connected to one side of the sector gear, and one end of the fixed rod far from the sector gear is rotatably connected to one end of the connecting rod far from the Bourdon tube.

[0013] As a further improvement of the present application, an inflation hole is provided at the bottom of the inner wall of the housing, and the inflation hole is directly above the inflation valve.

[0014] Compared with the prior art, the present application has the following beneficial effects:

[0015] 1. Through the provided installation groove, airbag, plug board and jacks, the pressure gauge movement can be quickly assembled. The bottom plate is placed in the installation groove to limit the movement of the movement and prevent it from sliding. Then, a pump is used to fix the outlet pipe of the pump to the inflation valve and inflate the airbag. The inflated airbag extrudes the plug board out of the second cavity, so that the plug board is inserted into the jacks to fix the bottom plate. There is no need to use screws for fixation, and the assembly efficiency of the movement is high;

[0016] 2. When the air pressure measured by the pressure gauge is relatively high due to the provided airbag and air replenishing rod, it may cause vibration of the movement. The airbag plays a certain buffering role to prevent damage to the movement. When the pressure gauge has been used for a long time, the air pressure in the airbag will decrease. By rotating the knob, the air replenishing rod is driven to rotate into the housing, so that the air inlet hole of the air replenishing rod is located inside the air inlet pipe, and the air outlet hole of the air replenishing rod is located inside the air replenishing valve. The air flowing through the air inlet pipe enters the airbag through the air delivery channel and the air replenishing valve to supplement the gas consumed by the airbag, firmly fixing the bottom plate under the movement, ensuring the accuracy of the pressure measurement by the pressure gauge, and avoiding rusting without using screws for fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings are used to provide a further understanding of the present application and constitute a part of the specification. They are used together with the embodiments of the present application to explain the present application, but do not constitute a limitation to the present application.

[0018] Figure 1 It is a schematic diagram of the overall structure of a pressure gauge movement according to the present application.

[0019] Figure 2 It is a schematic cross-sectional view of the housing of a pressure gauge movement according to the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the bottom plate and the rotating shaft of a pressure gauge movement according to the present application.

[0021] Figure 4 It is a schematic cross-sectional view of a partial structure of a pressure gauge movement according to the present application.

[0022] Figure 5 It is a schematic cross-sectional view of the air replenishing rod of a pressure gauge movement according to the present application.

[0023] In the figures: 1. Housing; 2. Air inlet pipe; 3. Bourdon tube; 4. Bottom plate; 5. Rotating shaft; 6. Sector gear; 7. Pointer; 8. Link; 9. Fixed rod; 10. Inflation hole; 11. Installation groove; 12. First cavity; 13. Second cavity; 14. Airbag; 15. Insertion plate; 16. Inflation valve; 17. Air replenishing valve; 18. Insertion hole; 19. Knob; 20. Air replenishing rod; 21. Air delivery channel; 22. Air inlet hole; 23. Air outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The present application will be further described in conjunction with specific embodiments. Among them, the attached drawings are only for illustrative purposes, showing only schematic diagrams, not physical diagrams, and should not be construed as a limitation of this patent. In order to better illustrate the specific embodiments of the present application, some components in the attached drawings will be omitted, enlarged or reduced, which does not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Based on the specific embodiments in the present application, all other specific embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0025] In order to make the technical means, creative features, achieved purposes and functions of the present application easy to understand, in the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the attached drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. The present application will be further elaborated below in conjunction with specific embodiments.

[0026] Embodiment 1

[0027] As Figures 1-5 shown, a pressure gauge movement includes a housing 1. An installation groove 11 is formed at the bottom of the inner wall of the housing 1. A bottom plate 4 is arranged inside the installation groove 11. A first cavity 12 and a second cavity 13 are formed inside the housing 1. The first cavity 12 is annular. The second cavity 13 communicates with the first cavity 12 and the installation groove 11. An airbag 14 is placed inside the first cavity 12. A plug board 15 is placed inside the second cavity 13. One side of the airbag 14 close to the installation groove 11 is fixedly connected to the plug board 15. An inflation valve 16 is fixedly installed at the top of the airbag 14. A supplementary air valve 17 is fixedly installed at the tail of the airbag 14. The shape and size of the installation groove 11 are the same as those of the bottom plate 4.

[0028] In this embodiment, jacks 18 are formed on the side surface of the bottom plate 4. The number of the jacks 18 is the same as that of the plug boards 15, and the opening size of the jacks 18 matches the plug boards 15. The bottom plate 4 is fixed by inserting the plug boards 15 into the jacks 18, and the bottom plate 4 with the movement installed is quickly installed in the pressure gauge.

[0029] In this embodiment, an intake pipe 2 is installed through one side of the housing 1. One end of the intake pipe 2 located inside the housing 1 is fixedly connected to a Bourdon tube 3. One end of the Bourdon tube 3 far from the intake pipe 2 is fixedly connected to a connecting rod 8. The gas to be measured will enter the Bourdon tube 3 from the intake pipe 2.

[0030] In this embodiment, a rotating shaft 5 is rotatably connected to the middle of the upper surface of the bottom plate 4. The top of the rotating shaft 5 is fixedly installed with a pointer 7. A sector gear 6 is fixedly connected to the outside of the rotating shaft 5. One side of the sector gear 6 is fixedly connected to a fixing rod 9. One end of the fixing rod 9 far from the sector gear 6 is rotatably connected to one end of the connecting rod 8 far from the Bourdon tube 3.

[0031] In this embodiment, an inflation hole 10 is opened at the bottom of the inner wall of the housing 1. The inflation hole 10 is directly above the inflation valve 16. Take out the air pump, insert the outlet pipe of the air pump into the inflation hole 10, and make the outlet pipe communicate with the inflation valve 16 for easy inflation.

[0032] Through this embodiment, it can be realized that: through the provided installation groove 11, airbag 14, insertion plate 15 and insertion hole 18, the pressure gauge movement can be assembled quickly. Place the bottom plate 4 into the installation groove 11 to limit the movement, prevent the movement from sliding, then fix the outlet pipe of the air pump to the inflation valve 16, inflate the airbag 14, and the inflated airbag 14 will extrude the insertion plate 15 from the second cavity 13, so that the insertion plate 15 is inserted into the insertion hole 18 to fix the bottom plate 4. There is no need to use screws for fixation, and the assembly efficiency of the movement is high.

[0033] Embodiment 2

[0034] As Figures 1-5 shown, a pressure gauge movement includes a housing 1. An installation groove 11 is opened at the bottom of the inner wall of the housing 1. A bottom plate 4 is arranged inside the installation groove 11. A first cavity 12 and a second cavity 13 are opened inside the housing 1. The first cavity 12 is annular. The second cavity 13 communicates the first cavity 12 and the installation groove 11. An airbag 14 is placed inside the first cavity 12. An insertion plate 15 is placed inside the second cavity 13. One side of the airbag 14 close to the installation groove 11 is fixedly connected to the insertion plate 15. An inflation valve 16 is fixedly installed at the top of the airbag 14. A supplementary air valve 17 is fixedly installed at the tail of the airbag 14. The shape and size of the installation groove 11 are the same as those of the bottom plate 4.

[0035] In this embodiment, an intake pipe 2 is installed through one side of the housing 1. One end of the intake pipe 2 located inside the housing 1 is fixedly connected to a Bourdon tube 3. One end of the Bourdon tube 3 far from the intake pipe 2 is fixedly connected to a connecting rod 8.

[0036] In this embodiment, a knob 19 is provided at the bottom of the housing 1. A gas supplement rod 20 is fixedly connected to the top of the knob 19. One end of the gas supplement rod 20 away from the knob 19 penetrates through the gas supplement valve 17 to reach the bottom of the air inlet pipe 2. An air delivery channel 21, an air inlet hole 22, and an air outlet hole 23 are formed inside the gas supplement rod 20. Both the air inlet hole 22 and the air outlet hole 23 are communicated with the air delivery channel 21, and the air inlet hole 22 is located above the air outlet hole 23. The outer wall of the gas supplement rod 20 is provided with threads, and the gas supplement rod 20 is threadedly connected to the housing 1. When the gas supplement rod 20 is not in use, the gas passing through the air inlet pipe 2 enters the Bourdon tube 3, and it will not affect the measurement result.

[0037] Through this embodiment, it can be realized that: by providing the airbag 14 and the gas supplement rod 20, when the air pressure measured by the pressure gauge is relatively large, it will cause the movement to vibrate. The airbag 14 plays a certain buffering role to avoid damage to the movement. When the pressure gauge is used for a long time, the air pressure in the airbag 14 will decrease. By rotating the knob 19, the gas supplement rod 20 is driven to rotate into the housing 1, so that the air inlet hole 22 of the gas supplement rod 20 is located inside the air inlet pipe 2, and the air outlet hole 23 of the gas supplement rod 20 is located inside the gas supplement valve 17. The air flow passing through the air inlet pipe 2 enters the inside of the airbag 14 through the air delivery channel 21 and the gas supplement valve 17 to supplement the gas consumed by the airbag 14, so that the bottom plate 4 under the movement is firmly fixed, ensuring the accuracy rate of the pressure gauge measurement, and no screws are used for fixing to avoid rusting.

[0038] This application is improved in that: the sector gear 6 and the pointer 7 are installed on the rotating shaft 5 above the bottom plate 4. The bottom plate 4 is placed in the installation groove 11 to limit the movement of the movement, preventing the bottom plate 4 and the movement from sliding. Then, the air outlet pipe of the air pump is inserted into the air inflation valve 16 below the air inflation hole 10, and the air pump is used to inflate the airbag 14. The airbag 14 inflates and expands to squeeze the plug plate 15 out of the second cavity 13, so that the plug plate 15 is inserted into the jack 18 to fix the bottom plate 4. There is no need to use screws for fixing, and the assembly efficiency of the movement is high. When the pressure gauge measures the air pressure, the gas will enter the Bourdon tube 3 through the air inlet pipe 2. The Bourdon tube 3 expands and deforms, driving the connecting rod 8 and the fixed rod 9 to move. The movement of the fixed rod 9 drives the sector gear 6 and the rotating shaft 5 to rotate. The rotation of the rotating shaft 5 drives the pointer 7 to rotate to observe the magnitude of the air pressure. When the air pressure measured by the pressure gauge is relatively large, it will cause the movement to vibrate. The airbag 14 plays a certain buffering role to avoid damage to the movement. When the pressure gauge is used for a long time, the air pressure in the airbag 14 will decrease. By rotating the knob 19, the gas supplement rod 20 is driven to rotate into the housing 1, so that the air inlet hole 22 of the gas supplement rod 20 is located inside the air inlet pipe 2, and the air outlet hole 23 of the gas supplement rod 20 is located inside the gas supplement valve 17. The air flow passing through the air inlet pipe 2 enters the inside of the airbag 14 through the air delivery channel 21 and the gas supplement valve 17. Without disassembling the pressure gauge, the gas consumed by the airbag 14 can be supplemented, so that the bottom plate 4 under the movement is firmly fixed, ensuring the accuracy rate of the pressure gauge measurement, and no screws are used for fixing to avoid rusting.

[0039] The above is the preferred embodiment of the present application. The basic principles, main features and advantages of the present application have been shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present application. Without departing from the spirit and scope of the present application, the present application will have various changes and improvements, and these changes and improvements all fall within the scope of the present application claimed. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A pressure gauge movement, comprising a housing (1), characterized in that: at the bottom of the inner wall of the housing (1), an installation groove (11) is opened, a bottom plate (4) is arranged inside the installation groove (11), a first cavity (12) and a second cavity (13) are opened inside the housing (1), the first cavity (12) is annular, the second cavity (13) communicates with the first cavity (12) and the installation groove (11), an airbag (14) is placed inside the first cavity (12), a plug board (15) is placed inside the second cavity (13), and one side of the airbag (14) close to the installation groove (11) is fixedly connected to the plug board (15); a charging valve (16) is fixedly installed at the top of the airbag (14), a gas supplementing valve (17) is fixedly installed at the tail of the airbag (14), the shape and size of the installation groove (11) are the same as those of the bottom plate (4); one side of the housing (1) is penetrated and installed with an air inlet pipe (2), and one end of the air inlet pipe (2) located inside the housing (1) is fixedly connected to a Bourdon tube (3); jack holes (18) are opened on the side surface of the bottom plate (4), the number of the jack holes (18) is the same as that of the plug boards (15), and the opening size of the jack holes (18) matches the plug boards (15); an air charging hole (10) is opened at the bottom of the inner wall of the housing (1), and the air charging hole (10) is directly above the charging valve (16).

2. A pressure gauge movement according to claim 1, characterized in that: one end of the Bourdon tube (3) far from the air inlet pipe (2) is fixedly connected to a connecting rod (8); a knob (19) is arranged at the bottom of the housing (1), the top of the knob (19) is fixedly connected to a gas supplementing rod (20), one end of the gas supplementing rod (20) far from the knob (19) penetrates through the gas supplementing valve (17) to reach the bottom of the air inlet pipe (2), an air transmission channel (21), an air inlet hole (22) and an air outlet hole (23) are opened inside the gas supplementing rod (20), the air inlet hole (22) and the air outlet hole (23) are both communicated with the air transmission channel (21), and the air inlet hole (22) is located above the air outlet hole (23), the outer wall of the gas supplementing rod (20) is provided with threads, and the gas supplementing rod (20) is threadedly connected to the housing (1).

3. A pressure gauge movement according to claim 2, characterized in that: a rotating shaft (5) is rotatably connected to the middle of the upper surface of the bottom plate (4).

4. A pressure gauge movement according to claim 3, characterized in that: a pointer (7) is fixedly installed at the top of the rotating shaft (5), a sector gear (6) is fixedly connected to the outside of the rotating shaft (5), a fixing rod (9) is fixedly connected to one side of the sector gear (6), and one end of the fixing rod (9) far from the sector gear (6) is rotatably connected to one end of the connecting rod (8) far from the Bourdon tube (3).

5. A working method of a pressure gauge movement, characterized in that, the pressure gauge movement adopts the pressure gauge movement according to claim 2; With the provided airbag and air replenishing rod, when the air pressure measured by the pressure gauge is relatively high, it may cause vibration of the movement. The airbag plays a certain buffering role to prevent damage to the movement. When the pressure gauge has been used for a long time, the air pressure inside the airbag will decrease. By rotating the knob, the air replenishing rod is driven to rotate into the housing, so that the air inlet hole of the air replenishing rod is located inside the air inlet pipe, and the air outlet hole of the air replenishing rod is located inside the air replenishing valve. The air flow passing through the air inlet pipe enters the airbag through the air delivery channel and the air replenishing valve to supplement the gas consumed by the airbag, firmly fixing the bottom plate under the movement, ensuring the accuracy of the pressure measurement of the pressure gauge, and avoiding rusting without using screws for fixation.

Images