A diaphragm capsule pressure gauge for measuring micro pressure

Abstract

The application provides a capsule pressure gauge for measuring micro-pressure, and belongs to the field of pressure gauges, to solve the problem of inconveniently moving and blocking the float block, comprising a pressure gauge body, a gas inlet pipe fixedly connected to the pressure gauge body, a threaded rod, a rotating disc fixedly connected to the threaded rod, an extrusion plate threadedly connected to the threaded rod, a guide rod limitingly and slidably connected to the extrusion plate, and the guide rod fixedly connected to a rotating block. The application is provided with a sliding plate; when the gas inlet pipe is subjected to excessively high pressure, the floating block and the connected sliding plate can be moved, the sliding plate moves stably under the guidance of the sliding rod, the sliding plate extrudes the spring when moving, the moving floating block can block the air plate in the gas inlet pipe in cooperation with the rubber pad, plays a sealing protection role, avoids the influence of excessively high pressure on the normal use of the pressure gauge body, and after the pressure is reduced, the sliding plate and the connected floating block are reset under the pushing of the spring, so as to facilitate subsequent pressure monitoring.

Description

Technical Field

[0001] This utility model relates to the field of pressure gauges, and more specifically, to a diaphragm pressure gauge for measuring micro-pressure. Background Technology

[0002] Diaphragm pressure gauges, also known as micro-pressure gauges, are instruments specifically designed to measure minute pressures. Their core sensing element is a corrugated diaphragm. They are suitable for gaseous or liquid media that are non-explosive, non-crystallizing, and non-corrosive to copper alloys. They are widely used in industrial production, chemical experiments, biopharmaceuticals, industrial automation, pneumatic systems, and other fields to accurately measure the minute and negative pressures of various gaseous media.

[0003] However, most diaphragm pressure gauges used for measuring micro-pressure currently have the following problems:

[0004] For example, a diaphragm pressure gauge with publication number 201821719546.2, although it can play a role in blockage protection by subjecting the float block to excessive pressure, the installed float block is moved by the pull of the balls and springs. However, the tension stability of the springs on both sides is poor, which affects the movement stability of the float block and makes it inconvenient to move the float block for blockage protection. In existing diaphragm pressure gauges, the pressure gauge is mostly exposed when monitoring pressure. If it is subjected to external impacts, the pressure gauge is easily damaged, affecting subsequent use and making it inconvenient to protect the pressure gauge.

[0005] Therefore, we have made improvements to this by proposing a diaphragm pressure gauge for measuring micro-pressure. Utility Model Content

[0006] The purpose of this invention is to address the current problems of inconvenient movement and blockage prevention of the float block, as well as the inconvenience in protecting the pressure gauge.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A diaphragm pressure gauge for measuring minute pressures was used to improve the aforementioned problems.

[0009] The application is as follows:

[0010] The pressure gauge includes a pressure gauge body, an air inlet pipe fixedly connected to the pressure gauge body, a pressure relief rod installed on the pressure gauge body, a slide rod fixedly connected inside the air inlet pipe, a slide plate slidably connected to the upper limit of the slide rod, a spring fixedly connected to the slide plate, the other end of the spring fixedly connected to the air inlet pipe, a float fixedly connected to the slide plate, a rubber pad fixedly connected to the float, a vent plate fixedly connected inside the air inlet pipe, a first protective shell provided on the pressure gauge body, a first mounting bracket fixedly connected to the first protective shell, a rotating block rotatably connected to the first mounting bracket, a threaded rod rotatably connected to the rotating block, a turntable fixedly connected to the threaded rod, a pressing plate threadedly connected to the threaded rod, a guide rod slidably connected to the upper limit of the pressing plate, and the guide rod fixedly connected to the rotating block.

[0011] As a preferred technical solution of this application, the slide rods are symmetrically distributed on the left and right sides inside the intake pipe, and the slide rods correspond one-to-one with the springs.

[0012] As a preferred technical solution of this application, the side end face of the slide plate is in contact with the inner side of the air intake pipe, and a through hole is provided in the center of the vent plate, with the through hole and the float in the same vertical line.

[0013] As a preferred technical solution of this application, the first mounting bracket is symmetrically distributed on the left and right sides of the first protective shell, and the first mounting bracket corresponds one-to-one with the threaded rod through the rotating block.

[0014] As a preferred technical solution of this application, the guide rods are symmetrically distributed on the left and right sides of the extrusion plate, and one end of the threaded rod is fixedly connected to the center of the turntable.

[0015] As a preferred technical solution of this application, a second protective shell is provided on one side of the first protective shell, a second mounting bracket is fixedly connected to the second protective shell, and the outer side of the second protective shell is in contact with the inner side of the first protective shell.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] 1. Equipped with a sliding plate; when the air intake pipe is subjected to excessive pressure, it can push the float and the connected sliding plate to move. The sliding plate moves smoothly under the guidance of the slide rod, and the movement of the sliding plate compresses the spring. The moving float can cooperate with the rubber pad to block the vent plate in the air intake pipe, playing a sealing and protective role, and preventing excessive pressure from affecting the normal use of the pressure gauge body. After the pressure drops, the sliding plate and the connected float will be reset under the push of the spring, so as to facilitate subsequent pressure monitoring.

[0019] 2. A compression plate is provided; when the first and second protective shells are closed on the pressure gauge body for protection, the first and second protective shells need to be fixed. The rotating block on the first mounting bracket can be rotated, and the threaded rod moves into the groove of the second mounting bracket. The rotating disc drives the threaded rod to rotate, and the threaded rod can drive the compression plate to move. The guide rod can guide and support the movement of the compression plate, and the compression plate can squeeze the second mounting bracket to install and fix the first and second protective shells, thereby protecting the pressure gauge body. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall three-dimensional structure of the diaphragm pressure gauge for measuring micro-pressure provided in this application;

[0021] Figure 2 A side view of the vent plate structure of the diaphragm pressure gauge for measuring micro-pressure provided in this application;

[0022] Figure 3 A top view schematic diagram of the slide plate structure of the diaphragm pressure gauge for measuring micro-pressure provided in this application;

[0023] Figure 4 The diaphragm pressure gauge for measuring micro-pressure provided in this application Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 5 A side view of the rotating block structure of the diaphragm pressure gauge for measuring micro-pressure provided in this application;

[0025] Figure 6 A top view of the first protective casing of the diaphragm pressure gauge for measuring micro-pressure provided in this application;

[0026] Figure 7 A top view of the second mounting bracket for the diaphragm pressure gauge used in this application for measuring micro-pressure.

[0027] The diagram shows: 1. Pressure gauge body; 2. Air inlet pipe; 3. Pressure relief rod; 4. Slide rod; 5. Slide plate; 6. Spring; 7. Float; 8. Rubber pad; 9. Vent plate; 10. First protective shell; 11. First mounting bracket; 12. Rotary block; 13. Threaded rod; 14. Turntable; 15. Squeezing plate; 16. Guide rod; 17. Second protective shell; 18. Second mounting bracket. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0029] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0033] Example 1:

[0034] like Figure 1-7 As shown, this embodiment proposes a diaphragm pressure gauge for measuring micro-pressure, including a pressure gauge body 1, an air inlet pipe 2 fixedly connected to the pressure gauge body 1, a pressure relief rod 3 installed on the pressure gauge body 1, a slide rod 4 fixedly connected inside the air inlet pipe 2, a slide plate 5 slidably connected to the upper limit of the slide rod 4, a spring 6 fixedly connected to the slide plate 5, the other end of the spring 6 fixedly connected to the air inlet pipe 2, a float 7 fixedly connected to the slide plate 5, a rubber pad 8 fixedly connected to the float 7, a vent plate 9 fixedly connected to the air inlet pipe 2, a first protective shell 10 provided on the pressure gauge body 1, a first mounting bracket 11 fixedly connected to the first protective shell 10, a rotating block 12 rotatably connected to the first mounting bracket 11, a threaded rod 13 rotatably connected to the rotating block 12, a turntable 14 fixedly connected to the threaded rod 13, a compression plate 15 threadedly connected to the threaded rod 13, a guide rod 16 slidably connected to the upper limit of the compression plate 15, and the guide rod 16 fixedly connected to the rotating block 12.

[0035] Example 2:

[0036] The solution in Example 1 will be further described below with reference to its specific working method.

[0037] like Figure 3 As shown, in a preferred embodiment, based on the above method, the slide rods 4 are symmetrically distributed on the left and right sides inside the air intake pipe 2, and the slide rods 4 correspond one-to-one with the springs 6, which can ensure that the slide rods 4 and springs 6 on both sides can guide or reset the movement of the slide plate 5.

[0038] like Figure 2 As shown, in a preferred embodiment, based on the above method, the side end face of the slide plate 5 is in contact with the inner side of the air intake pipe 2, and a through hole is provided in the center of the vent plate 9. The through hole and the float 7 are in the same vertical line, which can ensure that the float 7 can be blocked in the through hole of the vent plate 9 for isolation and protection.

[0039] like Figure 6 As shown, in a preferred embodiment, based on the above method, the first mounting bracket 11 is symmetrically distributed on the left and right sides of the first protective shell 10. The first mounting bracket 11 corresponds one-to-one with the threaded rod 13 through the rotating block 12, which can ensure that the threaded rods 13 on both sides can cooperate with the extrusion plate 15 to extrude and fix the second mounting bracket 18.

[0040] like Figure 5 As shown, in a preferred embodiment, based on the above method, the guide rods 16 are symmetrically distributed on the left and right sides of the extrusion plate 15, and one end of the threaded rod 13 is fixedly connected to the center of the turntable 14, which can ensure that the threaded rod 13 can be smoothly driven to rotate when the turntable 14 is rotated.

[0041] like Figure 6 As shown, in a preferred embodiment, based on the above method, a second protective shell 17 is further provided on one side of the first protective shell 10, and a second mounting bracket 18 is fixedly connected to the second protective shell 17. The outer side of the second protective shell 17 fits against the inner side of the first protective shell 10, which can ensure that the first protective shell 10 and the second protective shell 17 can play a role in splicing and fixing.

[0042] Specifically, when using this diaphragm pressure gauge for measuring micro-pressure: (in conjunction with...) Figure 1-7 When the intake pipe 2 is subjected to excessive pressure, it can push the float 7 and the connected slide plate 5 to move. The slide plate 5 moves smoothly under the guidance of the slide rod 4, and the slide plate 5 squeezes the spring 6 when it moves. The moving float 7 can cooperate with the rubber pad 8 to block the vent plate 9 in the intake pipe 2, which plays a role in sealing and protection, and prevents excessive pressure from affecting the normal use of the pressure gauge body 1. After the pressure drops, the slide plate 5 and the connected float 7 are reset under the push of the spring 6, so as to facilitate subsequent pressure monitoring. When manual pressure relief is required, the pressure relief rod 3 on the pressure gauge body 1 can be disassembled. The through hole can release the pressure in the pressure gauge body 1 to achieve the protection function.

[0043] When the first protective shell 10 and the second protective shell 17 are closed on the pressure gauge body 1 for protection, it is necessary to fix the first protective shell 10 and the second protective shell 17. The rotating block 12 on the first mounting bracket 11 can be rotated, and the threaded rod 13 moves into the groove of the second mounting bracket 18. The turntable 14 drives the threaded rod 13 to rotate, and the threaded rod 13 can drive the extrusion plate 15 to move. The guide rod 16 can guide and support the movement of the extrusion plate 15. The extrusion plate 15 can extrude the second mounting bracket 18 to install and fix the first protective shell 10 and the second protective shell 17, so as to protect the pressure gauge body 1.

[0044] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, as well as all technical solutions and improvements that do not depart from the spirit and scope of practicality, are covered within the scope of the claims of the present utility model.

Claims

1. A diaphragm pressure gauge for measuring micro-pressure, comprising a pressure gauge body (1), characterized in that, An air inlet pipe (2) is fixedly connected to the pressure gauge body (1). A pressure relief rod (3) is installed on the pressure gauge body (1). A slide rod (4) is fixedly connected inside the air inlet pipe (2). A slide plate (5) is slidably connected to the upper limit of the slide rod (4). A spring (6) is fixedly connected to the slide plate (5). The other end of the spring (6) is fixedly connected inside the air inlet pipe (2). A float (7) is fixedly connected to the slide plate (5). A rubber pad (8) is fixedly connected to the float (7). A vent plate (9) is fixedly connected inside the air inlet pipe (2). The pressure gauge body (1) is provided with a first protective shell (10), a first mounting bracket (11) is fixedly connected to the first protective shell (10), a rotating block (12) is rotatably connected to the first mounting bracket (11), a threaded rod (13) is rotatably connected to the rotating block (12), a turntable (14) is fixedly connected to the threaded rod (13), a pressing plate (15) is threadedly connected to the threaded rod (13), a guide rod (16) is slidably connected to the upper limit of the pressing plate (15), and the guide rod (16) is fixedly connected to the rotating block (12).

2. The diaphragm pressure gauge for measuring micro-pressure according to claim 1, characterized in that, The slide rods (4) are symmetrically distributed on the left and right sides inside the air intake pipe (2), and the slide rods (4) correspond one-to-one with the springs (6).

3. A diaphragm pressure gauge for measuring micro-pressure according to claim 1, characterized in that, The side end face of the slide plate (5) is in contact with the inner side of the air inlet pipe (2), and a through hole is provided in the center of the ventilation plate (9), with the through hole and the float (7) in the same vertical line.

4. A diaphragm pressure gauge for measuring micro-pressure according to claim 1, characterized in that, The first mounting bracket (11) is symmetrically distributed on the left and right sides of the first protective shell (10), and the first mounting bracket (11) corresponds one-to-one with the threaded rod (13) through the rotating block (12).

5. A diaphragm pressure gauge for measuring micro-pressure according to claim 1, characterized in that, The guide rods (16) are symmetrically distributed on the left and right sides of the extrusion plate (15), and one end of the threaded rod (13) is fixedly connected to the center of the turntable (14).

6. A diaphragm pressure gauge for measuring micro-pressure according to claim 1, characterized in that, A second protective shell (17) is provided on one side of the first protective shell (10), and a second mounting bracket (18) is fixedly connected to the second protective shell (17). The outer side of the second protective shell (17) is in contact with the inner side of the first protective shell (10).

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