Pressure gauge calibration device

Abstract

The utility model discloses a pressure gauge calibration device, and relates to the technical field of pressure gauge calibration. The utility model includes a calibration box, a limiting mechanism, a lifting mechanism and a pressure mechanism. The calibration box is provided with a calibration mechanism inside, the limiting mechanism is arranged above the calibration mechanism, and a pressure rod is fixedly installed at the rotating end of the limiting mechanism. The pressure rod is located above the calibration mechanism and is arranged correspondingly thereto, and presses and fixes the pressure gauge. The utility model drives the pressure rod at its end to flip through the limiting mechanism, so that it fits with the top of the flange of the pressure gauge to be tested, and relies on the moving end of the pressure mechanism to drive the limiting mechanism to move downward, so that the pressure rod applies pressure to the top of the pressure gauge, thereby quickly pressing and fixing the pressure gauges for batch inspection, accelerating the efficiency of disassembly and assembly of the pressure gauges during the calibration process, and reducing the time occupied by the installation and disassembly of a large number of pressure gauges.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge calibration, in particular to a pressure gauge calibration device. Background Art

[0002] A pressure gauge is an instrument that uses an elastic element as a sensitive element to measure and indicate pressure higher than the ambient pressure. It is widely used in almost all industrial processes and scientific research fields. As a measuring instrument, the calibration of the pressure gauge is an important link to ensure its accuracy and reliability. A Chinese patent with publication number CN216116520U discloses a pressure gauge calibration device, including a box body and a vibration plate, the bottom side wall of the box body is fixedly connected to a U-shaped frame, the bottom side wall of the U-shaped frame is fixedly connected to a plurality of universal wheels, the bottom side wall of the U-shaped frame is fixedly connected to a placement box, the inner side wall of the placement box is fixedly connected to a filter, and both sides of the vibration plate are fixedly connected to a plurality of extrusion springs.

[0003] With regard to this disclosed technology, when the pressure gauge is installed and fixed on the calibration device, it is necessary to install the threads one by one at the connection to the gas pipe. This makes the disassembly and assembly process take up a lot of time during the batch inspection of pressure gauges, which is inconvenient to use. In addition, the water resources for monitoring the sealing are not recycled, which is quite wasteful. Utility Model Content

[0004] In order to solve the above-mentioned problems, the utility model provides a pressure gauge calibration device to solve the problem that the disassembly and assembly of the pressure gauge is relatively complicated during calibration.

[0005] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions: a pressure gauge calibration device, including a calibration box, a limit mechanism, a lifting mechanism and a pressure mechanism, the calibration box is provided with a calibration mechanism inside, the limit mechanism is arranged above the calibration mechanism, and a pressure rod is fixedly installed at the rotating end of the limit mechanism, the pressure rod is located above the calibration mechanism and is arranged correspondingly thereto, and presses and fixes the pressure gauge;

[0006] A water storage bucket is rotatably installed at the rear end of the lifting mechanism. The height position of the water storage bucket is adjusted by pressing the front end of the lifting mechanism. The movable end of the pressure mechanism is connected to the top of the limiting mechanism to apply pressure to the pressure gauge. The movable end of the pressure mechanism contacts the front end of the lifting mechanism, and the lifting mechanism is pressed to lift the water storage bucket.

[0007] The inspection box, the inspection mechanism, the lifting mechanism and the pressure mechanism are all arranged on the top of the processing table. A support plate for supporting each mechanism is fixed on the top of the processing table. A control console is arranged on the top of the processing table.

[0008] The verification box comprises a box body, a glass plate, a support plate and a limit plate. The glass plate is fixedly installed on the front side of the box body, the support plate is fixedly installed on the inner bottom of the box body, and the limit plate is fixedly installed on the top of the support plate.

[0009] The supporting plates and the limiting plates are provided in multiple groups, and the multiple groups of supporting plates and the limiting plates are arranged at equal distances inside the box.

[0010] The calibration mechanism includes an air pump, an air pipe, a sealing gasket and a standard meter. The output end of the air pump is fixedly connected to the air pipe, and the air pipe extends to the interior of the calibration box. The top of the air pipe is provided with multiple groups of air outlet ports, and sealing gaskets are fixedly installed at the air outlet ports. The top of the air pipe is fixedly connected to a standard meter.

[0011] The air outlet of the air delivery pipe passes through the support plate and the limiting plate, and the sealing gasket is located on the top of the limiting plate.

[0012] The limiting mechanism includes a fixed seat, a first rotating rod, a second rotating rod, a transmission wheel and a connecting plate. The first rotating rod is rotatably installed inside the fixed seat, and the second rotating rod is rotatably installed inside the fixed seat. The surfaces of the fixed seat and the first rotating rod are both fixedly sleeved with transmission wheels, and the transmission wheels on the surfaces of the two are meshed and connected. The surface of the transmission wheel is fixedly installed with a connecting plate;

[0013] The bottom end of the connecting plate is correspondingly provided with a convex block and a concave block for plugging.

[0014] The bottom of the connecting plate is fixedly connected to the pressure rod, and the bottom of the pressure rod is fixedly installed with an arc block that fits the flange part at the bottom of the pressure gauge.

[0015] The lifting mechanism comprises a rotating bracket, a slot and a slide groove, wherein the rotating bracket is rotatably mounted on the top of the processing table, the slot is provided on the surface of the rotating bracket, and the slide groove is provided on the top of the rotating bracket;

[0016] Insertion rods are fixedly installed on both sides of the water storage barrel, and the insertion rods are slidably arranged in the slots. A corrugated pipe is fixedly connected to the surface of the water storage barrel, and the corrugated pipe is connected to the calibration box.

[0017] The pressure mechanism comprises an electric push rod, a sleeve plate, a pressing block, a spring and a pressing plate, wherein the sleeve plate is fixedly mounted on the bottom end of the electric push rod, and the pressing block is fixedly mounted on the bottom of the sleeve plate;

[0018] A spring is fixedly installed at the bottom of the sleeve plate, a slider is installed on one side of the sleeve plate, and a pressing plate is slidably mounted on the surface of the slider, the free end of the spring is connected to the surface of the pressing plate, and the pressing plate is fixedly connected to the top of the limiting mechanism.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model drives the pressure rod at the end to flip through the limiting mechanism, so that it fits with the top of the flange of the pressure gauge to be tested, and relies on the moving end of the pressure-applying mechanism to drive the limiting mechanism to move downward, so that the pressure rod applies pressure to the top of the pressure gauge, thereby quickly pressing and fixing the pressure gauges for batch inspection, speeding up the efficiency of disassembly and assembly of the pressure gauges during the calibration process, and reducing the time occupied by the installation and disassembly of a large number of pressure gauges;

[0021] The utility model moves the moving end of the pressure-applying mechanism downward, and at the same time presses the lifting mechanism to flip it while pressing the fixed pressure gauge, thereby driving the water storage barrel to be lifted to a height exceeding the calibration box, and the water for sealing detection flows into the calibration box. After the calibration work is completed, the pressing of the lifting mechanism is stopped, so that the water storage barrel falls freely to a height lower than the calibration box, and the water for sealing detection flows back into the water storage barrel, thereby recycling water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model from the first perspective;

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from the first perspective;

[0024] Figure 3 It is the first partial front cross-sectional view of the utility model;

[0025] Figure 4 It is a second partial cross-sectional schematic diagram of the utility model;

[0026] Figure 5 It is a third partial sectional schematic diagram of the utility model.

[0027] Figure numerals: 1. Calibration box; 101. Box body; 102. Glass plate; 103. Support plate; 104. Limit plate; 2. Calibration mechanism; 201. Air pump; 202. Air pipe; 203. Sealing gasket; 204. Standard table; 3. Limit mechanism; 301. Fixed seat; 302. First rotating rod; 303. Second rotating rod; 304. Transmission wheel; 305. Connecting plate; 4. Press rod; 5. Lifting mechanism; 501. Rotating bracket; 502. Slot; 503. Slide; 6. Water storage barrel; 7. Pressing mechanism; 701. Electric push rod; 702. Sleeve plate; 703. Pressing block; 704. Spring; 705. Pressing plate; 8. Processing table. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0029] Figures 1 to 5 It is the best embodiment of the utility model, and the following Figures 1 to 5 The utility model is further described.

[0030] The pressure gauge calibration device comprises a calibration box 1, a limiting mechanism 3, a lifting mechanism 5 and a pressure mechanism 7. A calibration mechanism 2 is arranged inside the calibration box 1, the limiting mechanism 3 is arranged above the calibration mechanism 2, and a pressure rod 4 is fixedly installed at the rotating end of the limiting mechanism 3. The pressure rod 4 is located above the calibration mechanism 2 and is arranged correspondingly thereto, and the pressure gauge is pressed and fixed; a water storage barrel 6 is rotatably installed at the rear end of the lifting mechanism 5, and the height position of the water storage barrel 6 is adjusted by pressing the front end of the lifting mechanism 5, and the moving end of the pressure mechanism 7 is connected to the top of the limiting mechanism 3 to apply pressure to the pressure gauge, and the moving end of the pressure mechanism 7 contacts the front end of the lifting mechanism 5, and the lifting mechanism 5 is pressed to lift the water storage barrel 6; specifically, The calibration mechanism 2 delivers gas to the pressure gauge placed in the calibration box 1 to increase the air pressure and test whether the pressure gauge meets the standards. The limiting mechanism 3 drives the pressure rod 4 to rotate and move it to the top of the flange of the pressure gauge to fit it. The pressure of the pressure-applying mechanism 7 drives the limiting mechanism 3 and the pressure rod 4 to quickly press and fix the pressure gauge. The lifting mechanism 5 enables the water storage barrel 6 to rotate and adjust its height position. The pressure of the pressure-applying mechanism 7 drives the lifting mechanism 5 to rotate and lift the water storage barrel 6 above the calibration box 1, so that the water in the water storage barrel 6 flows into the calibration box 1. After the calibration is completed, the water storage barrel 6 is lowered below the calibration box 1, and the test water flows back to the water storage barrel 6.

[0031] The calibration box 1, the calibration mechanism 2, the lifting mechanism 5 and the pressure mechanism 7 are all placed on the top of the processing table 8. A support plate for supporting each mechanism is fixed on the top of the processing table 8. A control console is provided on the top of the processing table 8. Specifically, the operation coordination of each mechanism of the device is regulated and set through the control console.

[0032] The calibration box 1 includes a box body 101, a glass plate 102, a support plate 103 and a limit plate 104. The glass plate 102 is fixedly installed on the front side of the box body 101, the support plate 103 is fixedly installed on the inner bottom of the box body 101, and the limit plate 104 is fixedly installed on the top of the support plate 103; the number of support plates 103 and limit plates 104 is multiple groups, and the multiple groups of support plates 103 and limit plates 104 are arranged equidistantly inside the box body 101; specifically, the glass plate 102 is used to facilitate observation of the inside of the box body 101, to check whether bubbles emerge from the connection between the pressure gauge and the device, and the pressure gauge to be calibrated is supported by the limit plate 104.

[0033] The calibration mechanism 2 includes an air pump 201, an air pipe 202, a sealing gasket 203 and a standard gauge 204. The output end of the air pump 201 is fixedly connected to the air pipe 202, and the air pipe 202 extends to the interior of the calibration box 1. The top of the air pipe 202 is provided with multiple groups of air outlets, and the sealing gasket 203 is fixedly installed at the air outlet. The top of the air pipe 202 is fixedly connected to the standard gauge 204; specifically, the gas is transported to the air pipe 202 by the air pump 201 to increase the pressure in the pipe, and the pressure gauge to be tested is compared with the standard gauge 204 for calibration, and the connection between the pressure gauge and the air pipe 202 is closed by the sealing gasket 203.

[0034] The air outlet of the air delivery pipe 202 passes through the support plate 103 and the limiting plate 104 , and the sealing gasket 203 is located on the top of the limiting plate 104 .

[0035] The limiting mechanism 3 includes a fixed seat 301, a first rotating rod 302, a second rotating rod 303, a transmission wheel 304 and a connecting plate 305. The first rotating rod 302 is rotatably installed inside the fixed seat 301, and the second rotating rod 303 is rotatably installed inside the fixed seat 301. The surfaces of the fixed seat 301 and the first rotating rod 302 are fixedly sleeved with transmission wheels 304, and the transmission wheels 304 on the surfaces of both are meshingly connected. The surface of the transmission wheel 304 is fixedly installed with a connecting plate 305; the bottom end of the connecting plate 305 is correspondingly provided with a convex block and a concave block for plug-in; specifically, the transmission wheel 304 on it is driven to rotate by rotating the first rotating rod 302, and the transmission of the transmission wheel 304 on the second rotating rod 303 is driven by the meshing connection of the adjacent transmission wheels 304, so that the connecting plate 305 rotates.

[0036] The bottom of the connecting plate 305 is fixedly connected to the pressure rod 4, and an arc block that fits the bottom flange of the pressure gauge is fixedly installed on the bottom of the pressure rod 4; specifically, the pressure rod 4 is driven to rotate by the connecting plate 305, and after the pressure gauge is placed, the pressure rod 4 is pushed so that its arc block fits with it to limit it.

[0037] The lifting mechanism 5 includes a rotating bracket 501, a slot 502 and a slide 503. The rotating bracket 501 is rotatably installed on the top of the processing table 8. The slot 502 is provided on the surface of the rotating bracket 501, and the slide 503 is provided on the top of the rotating bracket 501. Rods are fixedly installed on both sides of the water storage barrel 6, and the rods are slidably placed in the slots 502. A bellows is fixedly connected to the surface of the water storage barrel 6, and the bellows is connected to the inspection box 1. Specifically, the front and rear ends of the rotating bracket 501 are tilted by rotating, so that the height position of the water storage barrel 6 is adjusted. The rod of the water storage barrel 6 slides inside the slot 502. As the lifting mechanism 5 rotates, the water storage barrel 6 is adjusted to be higher than the inspection box 1 or lower than the inspection box 1, so as to control the water to flow into the inspection box 1 or flow back to the water storage barrel 6.

[0038] The pressure mechanism 7 includes an electric push rod 701, a sleeve plate 702, a pressing block 703, a spring 704 and a pressing plate 705. The sleeve plate 702 is fixedly installed at the bottom end of the electric push rod 701, and the pressing block 703 is fixedly installed at the bottom of the sleeve plate 702; the spring 704 is fixedly installed at the bottom of the sleeve plate 702, a slider is installed on one side of the sleeve plate 702, and a pressing plate 705 is slidably sleeved on the surface of the slider, the free end of the spring 704 is connected to the surface of the pressing plate 705, and the pressing plate 705 is fixed to the top of the limiting mechanism 3. Connection setting; specifically, the electric push rod 701 drives the sleeve plate 702 to move downward, so that the pressing block 703 at the bottom of the sleeve plate 702 contacts the inside of the slide groove 503, pushing the rotating bracket 501 to rotate, and controlling the water storage barrel 6 to lift, and relying on the downward movement of the sleeve plate 702, driving the pressing plate 705 slidably installed thereon to move downward, so that the limiting mechanism 3 and the pressure rod 4 press and fix the pressure gauge, and the presence of the spring 704 enables the sleeve plate 702 to continue to move downward until the water storage barrel 6 reaches a predetermined height after the pressure gauge is fixed.

[0039] In summary, when the utility model is used, the staff will place the pressure gauge to be tested in each group of limit plates 104, the sealing gasket 203 fits the flange at the bottom of the pressure gauge, the air pipe 202 is connected to the bottom of the pressure gauge, and the first rotating rod 302 is turned to rotate, so that the transmission wheel 304 on the first rotating rod 302 and the transmission wheel 304 on the second rotating rod 303 are meshed and rotated, driving the pressure rod 4 on the connecting plate 305 to rotate until the arc blocks of the two fit to the top of the flange of the pressure gauge, and the connection The convex blocks and concave blocks on the surface of the connecting plate 305 are correspondingly plugged in, and the pressure gauges placed in batches are uniformly pressed by the pressure rod 4, driving the electric push rod 701 to drive the sleeve plate 702 to move downward. During the downward movement of the sleeve plate 702, the spring 704 is first compressed to make the pressing plate 705 push the limit mechanism 3 and the pressure rod 4 downward, thereby quickly pressing and fixing the pressure gauge. As the sleeve plate 702 continues to move downward, the pressing block 703 contacts the slide groove 503, pressing the rotating bracket 501 to make it rotate, and the rotating bracket 50 The water storage barrel 6 at the rear end of the test box 1 is lifted until the height is higher than the test box 1. At this time, the water in the water storage barrel 6 flows into the box body 101 through the bellows until it covers the flange of the pressure gauge, driving the air pump 201 to deliver gas to the air pipe 202, gradually increasing the air pressure in the pipe. The pressure gauge to be tested and the standard gauge 204 record the test values, and compare them to verify whether the pressure gauge meets the standard. During the pressurization process, the glass plate 102 observes the connection between the pressure gauge and the air pipe 202. If bubbles appear continuously, The pressure gauge and the sealing gasket 203 are then checked to prevent equipment problems from affecting the accuracy of the pressure gauge detection. After the calibration is completed, the limit mechanism 3 and the pressure rod 4 are raised and the first rotating rod 302 is twisted in the opposite direction to separate the pressure rod 4 from the pressure gauge. At the same time, the pressing block 703 stops pressing the rotating bracket 501. The rear end of the rotating bracket 501 drops due to gravity, so that the height position of the water storage barrel 6 is lower than the calibration box 1. The water used for sealing detection in the calibration box 1 flows back to the water storage barrel 6 through the bellows for subsequent use.

[0040] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. Pressure gauge calibration device, characterized in that: The device comprises a calibration box (1), a limiting mechanism (3), a lifting mechanism (5) and a pressure mechanism (7); the calibration box (1) is provided with a calibration mechanism (2) inside; the limiting mechanism (3) is arranged above the calibration mechanism (2); and a pressure rod (4) is fixedly installed at the rotating end of the limiting mechanism (3); the pressure rod (4) is located above the calibration mechanism (2) and is arranged correspondingly thereto, so as to press and fix the pressure gauge; The rear end of the lifting mechanism (5) is rotatably mounted with a water storage bucket (6), and the height position of the water storage bucket (6) is adjusted by pressing the front end of the lifting mechanism (5). The movable end of the pressure-applying mechanism (7) is connected to the top of the limiting mechanism (3), and pressure is applied to the pressure gauge. The movable end of the pressure-applying mechanism (7) contacts the front end of the lifting mechanism (5), and the lifting mechanism (5) is pressed to lift the water storage bucket (6).

2. The pressure gauge calibration device according to claim 1, characterized in that: The inspection box (1), the inspection mechanism (2), the lifting mechanism (5) and the pressure mechanism (7) are all arranged on the top of the processing table (8). A support plate for supporting each mechanism is fixed on the top of the processing table (8). A control console is provided on the top of the processing table (8).

3. The pressure gauge calibration device according to claim 1, characterized in that: The verification box (1) comprises a box body (101), a glass plate (102), a support plate (103) and a limit plate (104); the glass plate (102) is fixedly mounted on the front side of the box body (101), the support plate (103) is fixedly mounted on the inner bottom of the box body (101), and the limit plate (104) is fixedly mounted on the top of the support plate (103); The supporting plates (103) and the limiting plates (104) are provided in multiple groups, and the multiple groups of supporting plates (103) and the limiting plates (104) are arranged at equal distances inside the box body (101).

4. The pressure gauge calibration device according to claim 1, characterized in that: The calibration mechanism (2) comprises an air pump (201), an air pipe (202), a sealing gasket (203) and a standard meter (204); the output end of the air pump (201) is fixedly connected to the air pipe (202), and the air pipe (202) extends to the interior of the calibration box (1); the top of the air pipe (202) is provided with a plurality of groups of air outlets, and the sealing gasket (203) is fixedly installed at the air outlet; the top of the air pipe (202) is fixedly connected to the standard meter (204).

5. The pressure gauge calibration device according to claim 4, characterized in that: The air outlet of the air delivery pipe (202) passes through the support plate (103) and the limiting plate (104), and the sealing gasket (203) is located on the top of the limiting plate (104).

6. The pressure gauge calibration device according to claim 1, characterized in that: The limiting mechanism (3) comprises a fixed seat (301), a first rotating rod (302), a second rotating rod (303), a transmission wheel (304) and a connecting plate (305); the first rotating rod (302) is rotatably mounted inside the fixed seat (301); the second rotating rod (303) is rotatably mounted inside the fixed seat (301); the transmission wheel (304) is fixedly mounted on the surfaces of the fixed seat (301) and the first rotating rod (302); the transmission wheels (304) on the surfaces of the two are meshingly connected; and the connecting plate (305) is fixedly mounted on the surface of the transmission wheel (304); The bottom end of the connecting plate (305) is correspondingly provided with a convex block and a concave block for plugging.

7. The pressure gauge calibration device according to claim 6, characterized in that: The bottom of the connecting plate (305) is fixedly connected to the pressure rod (4), and the bottom of the pressure rod (4) is fixedly installed with an arc block that fits the bottom flange of the pressure gauge.

8. The pressure gauge calibration device according to claim 2, characterized in that: The lifting mechanism (5) comprises a rotating bracket (501), a slot (502) and a slide groove (503); the rotating bracket (501) is rotatably mounted on the top of the processing table (8); the slot (502) is provided on the surface of the rotating bracket (501); and the slide groove (503) is provided on the top of the rotating bracket (501); Insertion rods are fixedly installed on both sides of the water storage barrel (6), and the insertion rods are slidably arranged in the slots (502). A bellows is fixedly connected to the surface of the water storage barrel (6), and the bellows is connected to the inspection box (1).

9. The pressure gauge calibration device according to claim 1, characterized in that: The pressure mechanism (7) comprises an electric push rod (701), a sleeve plate (702), a pressing block (703), a spring (704) and a pressing plate (705); the sleeve plate (702) is fixedly mounted on the bottom end of the electric push rod (701), and the pressing block (703) is fixedly mounted on the bottom of the sleeve plate (702); A spring (704) is fixedly mounted on the bottom of the sleeve plate (702), a slider is mounted on one side of the sleeve plate (702), and a pressing plate (705) is slidably mounted on the surface of the slider, a free end of the spring (704) is connected to the surface of the pressing plate (705), and the pressing plate (705) is fixedly connected to the top of the limiting mechanism (3).

Images