Adjustable pressure gauge calibration table

Abstract

The utility model relates to the technical field of pressure gauge calibration, in particular to an adjustable pressure gauge calibration table which comprises a calibration table body, an air pump is installed in the calibration table body through an installation frame, an adjusting assembly is arranged on the top of the calibration table body, and the adjusting assembly comprises a cylinder fixed to the top of the calibration table body through bolts. An internal thread sleeve is welded to the top end of the barrel, a screw rod is arranged in the internal thread sleeve in a penetrating and sleeving mode, and the bottom end, located in the barrel, of the screw rod is connected with a rubber plug through a bearing; an effective verification assembly is arranged at the top, located on one side of the barrel, of the verification table, the effective verification assembly comprises a main air pipe installed at the top of the verification table through an installation frame, the outer side of the main air pipe is sleeved with a pressure maintaining valve, one end of the main air pipe is welded with an air distribution pipe, and the outer side of the air distribution pipe is sleeved with an air inlet one-way valve; the air pump supplies air to the detected meter and the standard meter through the cylinder, the main air pipe and the branch air pipes, and the screw is rotated to push the rubber plug to move up and down, so that personnel can conveniently adjust the air inflow.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure gauge calibration, in particular to an adjustable pressure gauge calibration platform. 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 extremely common and is used in almost all industrial processes and scientific research fields. Due to the high mechanical strength and easy production characteristics of the elastic sensitive element of the mechanical pressure gauge, mechanical pressure gauges are becoming more and more widely used.

[0003] At present, a calibration bench is used to verify the pressure gauge during the production process. However, the existing adjustable pressure gauge calibration benches are all manually pressurized, requiring personnel to repeatedly move the rocker up and down, which is time-consuming and labor-intensive. Therefore, an adjustable pressure gauge calibration bench is proposed, which uses an air pump to pump external gas into the cylinder, and supplies pressure to the gauge under test and the standard gauge through the main air pipe and the distribution air pipe. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides an adjustable pressure gauge calibration table, which uses an air pump to draw external gas into the cylinder and supplies pressure to the gauge under test and the standard gauge through the main gas pipe and the gas distribution pipe.

[0005] The technical solution adopted by the utility model to solve the technical problem is an adjustable pressure gauge calibration platform, comprising a calibration platform, an air pump is installed inside the calibration platform through a mounting frame, an adjustment component is provided on the top of the calibration platform, the adjustment component comprises a cylinder fixed to the top of the calibration platform by bolts, an internal threaded sleeve is welded to the top of the cylinder, a screw is provided through the internal threaded sleeve, and the screw is located at the bottom end of the cylinder and is connected to a rubber plug through a bearing;

[0006] The verification table is provided with a verification component at the top of one side of the cylinder, and the verification component includes a main air pipe installed on the top of the verification table through a mounting bracket, a pressure-stabilizing valve is provided on the outside of the main air pipe, and an air distribution pipe is welded to one end of the main air pipe, and an air intake one-way valve is provided on the outside of the air distribution pipe.

[0007] By adopting the above technical solution, the air pump works by transporting the air to the meter under test and the standard meter through the cylinder, the main air pipe and the air distribution pipe. The rotating screw pushes the rubber plug up and down to adjust the air intake volume.

[0008] Specifically, limiting slide bars are welded on both sides of the inner side of the cylinder, limiting slide grooves are provided on both sides of the rubber plug, the limiting slide grooves are sleeved on the outside of the holding block, and the top end of the screw is fixed with the holding block by bolts.

[0009] Specifically, a connecting pipe is provided between the regulating assembly and the air pump, the top end of the connecting pipe is connected to one side of the cylinder through a pipe joint, and the bottom end of the connecting pipe is connected to the air outlet end of the air pump through a threaded groove.

[0010] Specifically, a docking sleeve is welded to the top of the air distribution pipe, and a side of the docking sleeve located on the top of the air intake one-way valve is connected to a pressure relief valve through a pipeline.

[0011] Specifically, a reserved groove is opened at one end of the calibration table, and a dustproof net is fixed inside the reserved groove by bolts.

[0012] Specifically, one end of the main air pipe away from the air distribution pipe is connected to one side of the cylinder through a pipe joint.

[0013] Beneficial effects of the utility model:

[0014] The utility model discloses an adjustable pressure gauge calibration table. When the vacuum pump is turned on, the external gas is sucked into the inside through the reserved groove, and the gas is transported into the cylinder through the connecting pipe. The gas entering the cylinder flows into the branch gas pipe through the main gas pipe, and then flows into the meter being tested and the standard meter, providing pressure to the meter being tested and the standard meter.

[0015] The utility model discloses an adjustable pressure gauge calibration table. The user holds the holding block and rotates the screw. The rotation of the screw causes the rubber plug to move up and down through the internal threaded sleeve. The rubber plug moves up and down to seal the holes on both sides of the cylinder, thereby adjusting the gas flow rate and facilitating pressure adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the calibration table of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the validation component of the present utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the adjustment component of the utility model;

[0021] In the figure: 1. Verification table; 2. Adjustment component; 201. Cylinder; 202. Internal threaded sleeve; 203. Screw; 204. Rubber plug; 205. Limit slide; 206. Limit slide; 207. Holding block; 3. Verification component; 301. Main air pipe; 302. Pressure regulating valve; 303. Air distribution pipe; 304. Air inlet check valve; 305. Docking sleeve; 306. Pressure relief valve; 4. Air pump; 5. Reserved groove; 6. Dust net; 7. Connecting pipe. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] The external gas is pumped into the cylinder through the air pump, and is supplied to the meter under test and the standard meter through the main gas pipe and the gas distribution pipe for pressure supply. Figure 1-4 As shown, the adjustable pressure gauge calibration platform described in the present invention includes a calibration platform 1, an air pump 4 is installed inside the calibration platform 1 through a mounting frame, an adjustment component 2 is provided on the top of the calibration platform 1, and the adjustment component 2 includes a cylinder 201 fixed to the top of the calibration platform 1 by bolts, an internal threaded sleeve 202 is welded to the top of the cylinder 201, a screw 203 is inserted through the internal threaded sleeve 202, and the screw 203 is located at the bottom end of the cylinder 201 and is connected to a rubber plug 204 through a bearing;

[0024] The verification table 1 is provided with a verification component 3 at the top of one side of the cylinder 201. The verification component 3 includes a main air pipe 301 installed on the top of the verification table 1 through a mounting bracket. A pressure-stabilizing valve 302 is provided on the outside of the main air pipe 301. An air distribution pipe 303 is welded to one end of the main air pipe 301. An air intake check valve 304 is provided on the outside of the air distribution pipe 303.

[0025] When in use, the air pump 4 works to transport the air to the meter under test and the standard meter through the cylinder 201, the main air pipe 301 and the air distribution pipe 303. The rotating screw 203 pushes the rubber stopper 204 up and down to adjust the air intake volume.

[0026] For example, Figure 4 As shown, the utility model also includes: limiting slides 205 welded on both sides of the inner side of the cylinder 201, limiting slide grooves 206 are opened on both sides of the rubber plug 204, the limiting slide grooves 206 are sleeved on the outside of the holding block 207, and the top of the screw rod 203 is fixed with the holding block 207 by bolts.

[0027] When in use, a person can rotate the screw rod 203 by holding the gripping block 207 , and the limiting slide bar 205 and the limiting slide groove 206 can prevent the rubber stopper 204 from rotating with the screw rod 203 without affecting the up and down movement of the rubber stopper 204 .

[0028] For example, Figure 2 As shown, the utility model also includes a connecting pipe 7 provided between the regulating assembly 2 and the vacuum pump 4, the top end of the connecting pipe 7 is connected to one side of the cylinder 201 through a pipe joint, and the bottom end of the connecting pipe 7 is connected to the air outlet end of the vacuum pump 4 through a threaded groove.

[0029] When in use, the air pump 4 works to deliver gas into the cylinder 201 through the connecting pipe 7 .

[0030] For example, Figure 3 As shown, the present invention further includes that a docking sleeve 305 is welded to the top of the gas distribution pipe 303 , and a pressure relief valve 306 is connected to one side of the docking sleeve 305 located on the top of the air intake check valve 304 through a pipeline.

[0031] When in use, the meter under test and the standard meter are screwed onto the top of the gas distribution pipe 303 through the docking sleeve 305 respectively. Opening the pressure relief valve 306 can discharge the gas in the gas distribution pipe 303 and the meter under test and the standard meter.

[0032] For example, Figure 2 As shown, the present invention further includes a reserved groove 5 at one end of the calibration table 1 , and a dustproof net 6 is fixed inside the reserved groove 5 by bolts.

[0033] During use, the reserved slot 5 is provided to facilitate the entry of external air into the calibration table 1 , and the dustproof net 6 can filter external dust and the like.

[0034] For example, Figure 3 As shown, the present invention further includes that one end of the main air pipe 301 away from the air branch pipe 303 is connected to one side of the cylinder 201 through a pipe joint.

[0035] When in use, the gas entering the cylinder 201 is transported to the gas distribution pipe 303 through the main gas pipe 301 .

[0036] When using the utility model, personnel use a power cord to connect the device to an external power source, and screw the pressure gauge to be tested and the standard pressure gauge to the two ends of the top of the gas distribution pipe 303 through the docking sleeve 305;

[0037] The personnel turns on the vacuum pump 4 to draw the external air into the reserved groove 5, and then transports it to the cylinder 201 through the connecting pipe 7. The gas entering the cylinder 201 flows through the main air pipe 301 to the air distribution pipe 303, and then flows to the meter under test and the standard meter, providing pressure to the meter under test and the standard meter;

[0038] A person holds the gripping block 207 and rotates the screw 203. The rotation of the screw 203 pushes the rubber plug 204 up and down through the internal threaded sleeve 202. The rubber plug 204 moves up and down to seal the holes on both sides of the cylinder 201, which can adjust the gas flow and facilitate personnel to adjust the pressure.

[0039] The air inlet one-way valve 304 can prevent the pressure from flowing back into the meter under test and the standard meter. Closing the pressure-stabilizing valve 302 stabilizes the pressure in the gas distribution pipe 303 and the meter under test and the standard meter, making it convenient for personnel to verify the meter under test. After the verification is completed, opening the pressure relief valve 306 can discharge the gas in the gas distribution pipe 303.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable pressure gauge calibration platform, characterized in that: The invention comprises a calibration table (1), wherein an air pump (4) is installed inside the calibration table (1) via a mounting frame, an adjustment assembly (2) is provided on the top of the calibration table (1), and the adjustment assembly (2) comprises a cylinder (201) fixed to the top of the calibration table (1) via bolts, an internal threaded sleeve (202) is welded to the top of the cylinder (201), a screw (203) is provided inside the internal threaded sleeve (202), and the screw (203) is located at the bottom end of the cylinder (201) and is connected to a rubber plug (204) via a bearing; The verification table (1) is provided with a validation assembly (3) at the top of one side of the cylinder (201). The validation assembly (3) comprises a main air pipe (301) mounted on the top of the verification table (1) via a mounting frame. A pressure stabilizing valve (302) is sleeved on the outside of the main air pipe (301). A gas distribution pipe (303) is welded to one end of the main air pipe (301). An air intake check valve (304) is sleeved on the outside of the gas distribution pipe (303).

2. The adjustable pressure gauge calibration platform according to claim 1, characterized in that: Limiting slide bars (205) are welded on both sides of the inner side of the cylinder (201), and limiting slide grooves (206) are provided on both sides of the rubber plug (204). The limiting slide grooves (206) are sleeved on the outside of the gripping block (207), and the top end of the screw rod (203) is fixed to the gripping block (207) by bolts.

3. The adjustable pressure gauge calibration platform according to claim 1, characterized in that: A connecting pipe (7) is provided between the regulating assembly (2) and the air pump (4); the top end of the connecting pipe (7) is connected to one side of the cylinder (201) via a pipe joint, and the bottom end of the connecting pipe (7) is connected to the air outlet end of the air pump (4) via a threaded groove.

4. The adjustable pressure gauge calibration platform according to claim 1, characterized in that: A butt joint sleeve (305) is welded to the top of the gas distribution pipe (303), and a pressure relief valve (306) is connected to one side of the butt joint sleeve (305) located at the top of the air intake check valve (304) through a pipeline.

5. The adjustable pressure gauge calibration platform according to claim 1, characterized in that: A reserved groove (5) is provided at one end of the calibration table (1), and a dustproof net (6) is fixed inside the reserved groove (5) by bolts.

6. The adjustable pressure gauge calibration platform according to claim 1, characterized in that: One end of the main air pipe (301) away from the air distribution pipe (303) is connected to one side of the cylinder (201) via a pipe joint.

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