A pressure gauge cleaning device and cleaning method

Abstract

The utility model discloses a pressure gauge cleaning device and cleaning method, including cleaning machine, the port fixed mounting of cleaning machine has hollow pipe, the surface installation instrument installation head of hollow pipe, the one end installation of hollow pipe cleaning interface pipeline, the other end installation of hollow pipe exhaust interface pipeline, the other end fixed mounting of exhaust interface pipeline is on the exhaust interface, the other end installation of cleaning interface pipeline is on the cleaning interface, and the cleaning interface and exhaust interface install on the surface of cleaning machine host computer. The fixed mounting of solvent cup I and solvent cup II is in the cleaning machine host computer, installs hollow pipeline in solvent cup I, and the number of hollow pipeline is two, and one hollow pipeline bottom end is connected with connecting pipeline II, and the bottom end of another hollow pipeline is connected with connecting pipeline III. The utility model has the advantages of: can be specially aimed at the narrow curved strip space of pressure gauge elastic element inner chamber and carry out the flushing, makes the cleaning more completely, and the cleaning efficiency is high, saves time, saves manpower.

Description

Technical Field

[0001] This invention relates to the field of instrument cleaning technology, specifically to a pressure gauge cleaning device and cleaning method. Background Technology

[0002] A pressure gauge is an instrument that measures pressure using an elastic sensing element. It is widely used for measuring the pressure of liquids, gases, and steam. Its working principle is that the elastic sensing element undergoes elastic deformation under pressure, which is amplified by a transmission mechanism and indicated by a pointer on a scale. Because the elastic sensing element is designed as a hollow, closed tube structure, when the measured medium contains a large amount of viscous substances or solid particles, they can accumulate in the narrow tube structure, clogging the pipe and causing the pressure gauge to malfunction. Alternatively, when the pressure gauge needs to measure oil-free media such as oxygen, it also needs to be internally cleaned to prevent the introduction of oil contaminants.

[0003] The cleaning method used in the existing technology is to put the instrument to be cleaned into the cleaning machine. Although it saves manpower, it cannot thoroughly clean the internal pipelines of the instrument, so the cleaning is not thorough enough.

[0004] The publication number is CN115415228A, entitled "A Cleaning System and Method for Pressure Measuring Instruments." This invention discloses a cleaning system and method for pressure measuring instruments. The cleaning system includes an actuator, a measuring unit, auxiliary equipment, a circulation device, and a controller. Addressing the shortcomings of existing pressure measuring instrument cleaning technologies, such as time consumption and oil residue, this invention uses a PLC to process data from flow sensors and density meters, enabling real-time control of the actuator by the controller and displaying the cleaning progress on a host computer. It utilizes clean water as the cleaning medium and achieves recycling of the cleaning medium through a circulation device, significantly reducing cleaning costs and ensuring system cleaning efficiency. The PLC's manual / automatic mode switching improves the system's automation level and reliability, laying a solid foundation for the normal use of the instruments.

[0005] Although the above-mentioned cleaning system can clean the internal cavity of pressure measuring instruments, the internal cavity of pressure measuring instruments is a narrow and curved strip-shaped space. When there is air in the strip-shaped space, the cleaning fluid has difficulty entering because the air occupies the deep inside, so it cannot achieve a more thorough cleaning. Summary of the Invention

[0006] The purpose of this invention is to provide a pressure gauge cleaning device and method with a more reasonable structural design, ingenious concept, convenient operation, low production cost, and the ability to specifically flush the narrow, curved strip-shaped space inside the pressure measuring instrument, resulting in more thorough cleaning, high cleaning efficiency, and saving time and manpower.

[0007] This invention discloses a pressure gauge cleaning device and cleaning method, comprising a cleaning machine 2, a hollow tube 4 fixedly installed at one end of the cleaning machine 2, an instrument mounting head 6 fixedly installed on the surface of the hollow tube 4, a cleaning interface pipe 5 fixedly installed at one end of the hollow tube 4, an exhaust interface pipe 9 fixedly installed at the other end of the hollow tube 4, the other end of the exhaust interface pipe 9 fixedly installed on an exhaust interface 14, and the other end of the cleaning interface pipe 5 fixedly installed on a cleaning interface 13. The cleaning interface 13 and the exhaust interface 14 are fixedly installed on the surface of the cleaning machine main unit 11.

[0008] The cleaning machine main unit 11 is fixedly installed with solvent cup I 18 and solvent cup II 19. Solvent cup I 18 is fixedly installed with hollow pipe 24. There are two hollow pipes 24. The bottom end of one hollow pipe 24 is fixedly connected to connecting pipe II 25, and the bottom end of the other hollow pipe 24 is fixedly connected to connecting pipe III 27. Connecting pipe II 25 is connected to vacuum pipe 28.

[0009] The number of vacuum pumps 26 is two, and a coupling is fixedly installed between the two vacuum pumps 26. The coupling is fixedly connected to the motor 29.

[0010] The two vacuum pumps 26 installed can increase the vacuum pumping strength of the vacuum pumps 26 and improve the working efficiency of the entire device.

[0011] The bottom end of the cleaning interface 13 is fixedly connected to a connecting pipe I 20, and the other end of the connecting pipe I 20 is connected to connecting pipe III 27 and connecting pipe V 35; the bottom end of the exhaust interface 14 is fixedly connected to a connecting pipe IV 32.

[0012] The system includes a hollow tube 4, an instrument mounting head 6, a cleaning interface pipe 5, an exhaust interface pipe 9, a connecting pipe I 20, a hollow tube 24, a connecting pipe II 25, and a connecting pipe IV 32. When the instrument to be cleaned is installed on the surface of the hollow tube 4 through the instrument mounting head 6, a sealed space is formed. When the three-way control valve 30 is opened, the connecting pipe III 27 and the connecting pipe I 20 are connected to each other, and the connecting pipe V 35 is closed. At this time, the sealed space formed by the connecting pipe I 20, the cleaning interface pipe 5, the instrument mounting head 6, the hollow tube 4, the inner cavity of the instrument, and the exhaust interface pipe 9 is in a vacuum state. This allows the air in the inner cavity of the instrument to be extracted, ensuring that the inner cavity of the instrument is in a vacuum state. This facilitates the subsequent cleaning process, allowing the cleaning agent to fill the inner cavity of the instrument, especially the narrow and winding strip-shaped space, providing favorable conditions for subsequent cleaning.

[0013] When the three-way control valve 30 is adjusted, connecting pipe V35 and connecting pipe I20 are connected to each other. When the sealing plug II34 is opened, the cleaning agent in solvent cup II19 is forced into connecting pipe V35 and connecting pipe I20 by atmospheric pressure, and then enters the cleaning interface pipe 5, instrument mounting head 6, and the inner cavity of the instrument, filling the narrow strip space inside the instrument for cleaning, so as to achieve the purpose of thorough cleaning.

[0014] After cleaning, turn the three-way control valve 30 to connect the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20, close the connecting pipe Ⅴ35, and open the pressure relief valve 16. The cleaning solution in the instrument cavity will enter the hollow pipe 24 through the cleaning interface pipe 5 and the connecting pipe Ⅰ20. The cleaning solution in the hollow pipe 24 will flow out from the top and settle from the bottom to the top in the solvent cup Ⅰ18. After it is full, the cleaning solution in the solvent cup Ⅰ18 will be discharged through the drain pipe 22 by opening the drain valve 10. The operation is convenient, saves time and manpower, has high cleaning efficiency, and is highly practical.

[0015] The purpose of setting up two hollow pipes 24 is that, during the sewage discharge process, when sewage enters the hollow pipe 24 through the connecting pipe Ⅲ 27 and then enters the solvent cup Ⅰ 18, the other hollow pipe 24 is evacuated through the connecting pipe Ⅱ 25, so that the two will not interfere with each other.

[0016] A pressure relief valve 16 is fixedly installed at the end of the connecting pipe IV 32; a three-way control valve 30 is fixedly installed at the connection between the connecting pipe I 20 and the connecting pipe III 27.

[0017] The three-way control valve 30 can switch the vacuum pipeline inside the main unit 11 of the cleaning machine, and control the vacuum state in the closed space formed by the hollow pipe 4, the instrument mounting head 6, the instrument to be cleaned, the cleaning interface pipe 5, the exhaust interface pipe 9, the connecting pipe I 20, the hollow pipe 24, the connecting pipe II 25, and the connecting pipe IV 32. By adjusting the three-way control valve 30, the cleaning agent can also be automatically injected into the space to be cleaned, thereby facilitating the cleaning of the inner cavity of the instrument.

[0018] The solvent cup I 18 and solvent cup II 19 are respectively equipped with liquid level sensor I 21 and liquid level sensor II 33. Liquid level sensor I 21 is electrically connected to drain alarm 12, and liquid level sensor II 33 is electrically connected to clean liquid level alarm 15. A drain pipe 22 is fixedly connected to the bottom of solvent cup I 18, and a drain valve 10 is fixedly installed on the drain pipe 22.

[0019] The liquid level sensors I21 and II33 can monitor the level of wastewater in solvent cup I18 and the cleaning agent dosage in solvent cup II19 at any time during the operation of the main unit 11 of the cleaning machine to prevent overflow; and ensure that the amount of cleaning agent in solvent cup II19 is sufficient, and remind the operator through the drain alarm 12 and the clean liquid level alarm 15.

[0020] A method for cleaning pressure gauges includes the following steps:

[0021] 1) Install the instrument to be cleaned onto the surface of the hollow tube 4 through the instrument mounting head 6. The hollow tube 4, the instrument mounting head 6, the inner cavity of the instrument, the exhaust port pipe 9, the cleaning port pipe 5, the connecting pipe I 20, and the connecting pipe IV 32 form a sealed space. Fill the solvent cup II 19 with cleaning agent. Close the pressure relief valve 16 and turn on the power switch 17 of the cleaning machine main unit 11. The motor 29 starts and drives the vacuum pump 26 to start running. It begins to draw a vacuum into the connected vacuum pipe 28 and the connecting pipe II 25. The two hollow pipes 24, the solvent cup I 18, and the connecting pipe III 27 form a vacuum state.

[0022] 2) Open the three-way control valve 30, and the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20 are connected to each other. The connecting pipe Ⅴ35 is closed. At this time, the connecting pipe Ⅰ20, the cleaning interface pipe 5, the instrument mounting head 6, the hollow pipe 4, the inner cavity of the instrument, and the exhaust interface pipe 9 form a sealed space in a vacuum state.

[0023] 3) Open the three-way control valve 30 to connect pipe V35 and pipe I20. Open the sealing plug II34. The cleaning agent in solvent cup II19 is forced into pipe V35 and pipe I20 by atmospheric pressure, and then enters the cleaning interface pipe 5, instrument mounting head 6 and the inner cavity of the instrument for cleaning.

[0024] 4) Add water to the cleaning machine 2, turn on the cleaning machine 2, the cleaning machine 2 can vibrate and clean the instruments located in the inner cavity of the cleaning machine 2, and after the vibration cleaning is completed, drain the water added to the cleaning machine 2.

[0025] 5) After cleaning, turn the three-way control valve 30 to connect the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20, close the connecting pipe Ⅴ35, and the sealed space enters a vacuum state. Open the pressure relief valve 16, and the cleaning solution in the instrument cavity will enter the hollow pipe 24 through the cleaning interface pipe 5 and the connecting pipe Ⅰ20. The cleaning solution in the hollow pipe 24 flows out from the top and settles from the bottom to the top in the solvent cup Ⅰ18. After it is full, open the drain valve 10 to discharge the cleaning solution in the solvent cup Ⅰ18 through the drain pipe 22.

[0026] The beneficial effects of this invention are:

[0027] 1) The hollow tube 4, instrument mounting head 6, cleaning interface pipe 5, exhaust interface pipe 9, connecting pipe I 20, hollow pipe 24, connecting pipe II 25, and connecting pipe IV 32 are configured so that when the instrument to be cleaned is installed on the surface of the hollow tube 4 through the instrument mounting head 6, it will form a closed space with the inner cavity of the pressure gauge being cleaned. The connecting pipe III 27 and the connecting pipe I 20 are connected to each other, and the connecting pipe V 35 is closed. At this time, the closed space formed by the connecting pipe I 20, cleaning interface pipe 5, instrument mounting head 6, hollow tube 4, the inner cavity of the instrument, and exhaust interface pipe 9 is in a vacuum state. The air in the inner cavity of the instrument can be extracted to ensure that the inner cavity of the instrument is in a vacuum state. At the same time, the solvent in the solvent cup II 19 can better enter the inner cavity of the pressure gauge, which is convenient for the cleaning agent to fill the inner cavity of the instrument during the subsequent cleaning process, especially to fill the narrow strip space in the inner cavity of the instrument, providing favorable conditions for the subsequent instrument cleaning.

[0028] 2) Open the three-way control valve 30, connect the connecting pipe V35 and the connecting pipe I20 to each other, open the sealing plug II34, and the cleaning agent in the solvent cup II19 is forced into the connecting pipe V35 and the connecting pipe I20 by atmospheric pressure, and then enters the cleaning interface pipe 5, the instrument mounting head 6 and the inner cavity of the instrument, filling the strip space inside the instrument cavity. When cleaning is carried out in the cleaning machine 2, the cleaning purpose can be achieved.

[0029] 3) After cleaning, turn the three-way control valve 30 to connect the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20, close the connecting pipe Ⅴ35, and the sealed space enters a vacuum state. Open the pressure relief valve 16, and the cleaning solution in the instrument cavity will enter the hollow pipe 24 through the cleaning interface pipe 5 and the connecting pipe Ⅰ20. The cleaning solution in the hollow pipe 24 flows out from the top and settles from the bottom to the top in the solvent cup Ⅰ18. After it is full, the cleaning solution in the solvent cup Ⅰ18 will be discharged through the drain pipe 22 by opening the drain valve 10. The operation is convenient, saves time and manpower, has high cleaning efficiency, and is highly practical.

[0030] 4) The purpose of setting up two hollow pipes 24 is that when sewage enters the hollow pipe 24 through the connecting pipe Ⅲ 27 during the sewage discharge process, and then enters the solvent cup Ⅰ 18, the other hollow pipe 24 is vacuumed through the connecting pipe Ⅱ 25, so the two will not interfere with each other.

[0031] 5) The device is currently in production and use. It has a good cleaning effect, cleans instruments more thoroughly, has low processing and manufacturing costs, can save manpower and material resources, and has high cleaning efficiency. It is worth promoting and applying it on a large scale. Attached Figure Description

[0032] Figure 1This is a schematic diagram of the invention.

[0033] Figure 2 This is a top view of the present invention;

[0034] Figure 3 This is a schematic diagram of the pipeline connection structure in this invention.

[0035] In the diagram: 1. Fixture; 2. Cleaning machine; 3. Cleaning machine adjustment panel; 4. Hollow tube; 5. Cleaning interface pipe; 6. Instrument mounting head; 7. Valve; 8. Drain pipe; 9. Exhaust interface pipe; 10. Sewage valve; 11. Cleaning machine main unit; 12. Sewage level alarm; 13. Cleaning interface; 14. Exhaust interface; 15. Clean liquid level alarm; 16. Pressure relief valve; 17. Power switch; 18. Solvent cup I; 19. Solvent cup II; 20. Connecting pipe I; 21. Liquid level sensor I; 22. Sewage pipe; 23. Sealing plug I; 24. Hollow tube; 25. Connecting pipe II; 26. Pump; 27. Connecting pipe III; 28. Vacuum pipe; 29. ​​Motor; 30. Three-way control valve; 31. Pressure transmitter; 32. Connecting pipe IV; 33. Liquid level sensor II; 34. Sealing plug II; 35. Connecting pipe V; 36. Pressure display screen. Detailed Implementation

[0036] Example 1.

[0037] The following will be combined with the appendix Figure 1-3 The present invention will be further described below.

[0038] This invention includes a fixed frame 1, a cleaning machine 2, a cleaning machine adjustment panel 3, a hollow tube 4, a cleaning interface pipe 5, an instrument mounting head 6, an exhaust interface pipe 9, a drain valve 10, a cleaning machine main unit 11, a cleaning interface 13, an exhaust interface 14, a pressure relief valve 16, a power switch 17, a solvent cup I 18, a solvent cup II 19, a connecting pipe I 20, a drain pipe 22, a sealing plug I 23, a hollow tube 24, a connecting pipe II 25, a pump 26, a connecting pipe III 27, a vacuum pipe 28, a motor 29, a three-way control valve 30, a pressure transmitter 31, a connecting pipe IV 32, a liquid level sensor II 33, a sealing plug II 34, and a connecting pipe V 35. Specifically, the cleaning machine 2 has a hollow tube 4 fixedly installed at its port. An instrument mounting head 6 is fixedly installed on the surface of the hollow tube 4. A cleaning interface pipe 5 is fixedly installed on one end of the hollow tube 4. An exhaust interface pipe 9 is fixedly installed on the other end of the hollow tube 4. The other end of the exhaust interface pipe 9 is fixedly installed on the exhaust interface 14. The other end of the cleaning interface pipe 5 is fixedly installed on the cleaning interface 13. The cleaning interface 13 and the exhaust interface 14 are fixedly installed on the surface of the cleaning machine main unit 11.

[0039] The cleaning machine main unit 11 is fixedly installed with solvent cup I 18 and solvent cup II 19. Solvent cup I 18 is fixedly installed with hollow pipe 24. There are two hollow pipes 24. The bottom end of one hollow pipe 24 is fixedly connected to connecting pipe II 25, and the bottom end of the other hollow pipe 24 is fixedly connected to connecting pipe III 27. Connecting pipe II 25 is connected to vacuum pipe 28.

[0040] The number of vacuum pumps 26 is two, and a coupling is fixedly installed between the two vacuum pumps 26. The coupling is fixedly connected to the motor 29.

[0041] The two vacuum pumps 26 can be set up to increase the vacuum pumping intensity and improve the overall working efficiency.

[0042] The bottom end of the cleaning interface 13 is fixedly connected to a connecting pipe I20, and the other end of the connecting pipe I20 is connected to a connecting pipe III27; the bottom end of the exhaust interface 14 is fixedly connected to a connecting pipe IV32.

[0043] A pressure relief valve 16 is fixedly installed at the end of the connecting pipe IV 32; a three-way control valve 30 is fixedly installed at the connection between connecting pipe I 20, connecting pipe III 27 and connecting pipe V 35.

[0044] The instrument mounting head 6 is a tubular body with internal threads. The internal threads can be screwed together with the external threads at the end of the pressure gauge for fixation, making installation and disassembly convenient.

[0045] The three-way control valve 30 has the following models: DN15, DN20, and DN25.

[0046] The main unit 11 of the cleaning machine is 300 mm long, 400 mm wide, and 310 mm high; the cleaning machine 2 is 450 mm long, 340 mm wide, and 210 mm high; the solvent cup I 18 and solvent cup II 19 have a volume of 800 ml each; and the cleaning machine 2 is an ultrasonic cleaning machine.

[0047] The vibration amplitude and duration of the cleaning machine 2 during cleaning can be adjusted by the cleaning machine adjustment panel 3 installed on the cleaning machine 2.

[0048] The cleaning method of this cleaning device includes the following steps:

[0049] 1) Install the instrument to be cleaned onto the surface of the hollow tube 4 through the instrument mounting head 6. The hollow tube 4, the instrument mounting head 6, the inner cavity of the instrument, the exhaust port pipe 9, the cleaning port pipe 5, the connecting pipe I 20, and the connecting pipe IV 32 form a sealed space. Fill the solvent cup II 19 with cleaning agent. Close the pressure relief valve 16 and turn on the power switch 17 of the cleaning machine main unit 11. The motor 29 starts and drives the vacuum pump 26 to start running. It begins to draw a vacuum into the connected vacuum pipe 28 and the connecting pipe II 25. The two hollow pipes 24, the solvent cup I 18, and the connecting pipe III 27 form a vacuum state.

[0050] 2) Open the three-way control valve 30, and the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20 are connected to each other. The connecting pipe Ⅴ35 is closed. At this time, the connecting pipe Ⅰ20, the cleaning interface pipe 5, the instrument mounting head 6, the hollow pipe 4, the inner cavity of the instrument, and the exhaust interface pipe 9 form a sealed space in a vacuum state.

[0051] 3) Open the three-way control valve 30 to connect pipe V35 and pipe I20. Open the sealing plug II34. The cleaning agent in solvent cup II19 is forced into pipe V35 and pipe I20 by atmospheric pressure, and then enters the cleaning interface pipe 5, instrument mounting head 6 and the inner cavity of the instrument for cleaning.

[0052] 4) Add water to the cleaning machine 2, turn on the cleaning machine 2, the cleaning machine 2 can vibrate and clean the instruments located in the inner cavity of the cleaning machine 2, and after the vibration cleaning is completed, drain the water added to the cleaning machine 2.

[0053] 5) After cleaning, turn the three-way control valve 30 to connect the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20, and close the connecting pipe Ⅴ35. The sealed space mentioned above enters a vacuum state. Open the pressure relief valve 16, and the cleaning solution in the instrument cavity will enter the hollow pipe 24 through the cleaning interface pipe 5 and the connecting pipe Ⅰ20. The cleaning solution in the hollow pipe 24 flows out from the top and settles from the bottom to the top in the solvent cup Ⅰ18. After it is full, open the drain valve 10 to discharge the cleaning solution in the solvent cup Ⅰ18 through the drain pipe 22.

[0054] Example 2.

[0055] The following will be combined with the appendix Figure 1-3 The present invention will be further described below.

[0056] This invention includes a fixed frame 1, a cleaning machine 2, a cleaning machine adjustment panel 3, a hollow tube 4, a cleaning interface pipe 5, an instrument mounting head 6, a valve 7, a drain pipe 8, an exhaust interface pipe 9, a drain valve 10, a cleaning machine main unit 11, a waste liquid level alarm 12, a cleaning interface 13, an exhaust interface 14, a clean liquid level alarm 15, a pressure relief valve 16, a power switch 17, a solvent cup I 18, a solvent cup II 19, a connecting pipe I 20, a liquid level sensor I 21, a drain pipe 22, a sealing plug I 23, a hollow tube 24, a connecting pipe II 25, a pump 26, a connecting pipe III 27, and a vacuum pump. Pipeline 28, motor 29, three-way control valve 30, pressure transmitter 31, connecting pipe IV 32, liquid level sensor II 33, sealing plug II 34, connecting pipe V 35, the specific structure is the same as described in Example 1. Liquid level sensors I 21 and II 33 are respectively installed on solvent cup I 18 and solvent cup II 19. Liquid level sensor I 21 is electrically connected to drain alarm 12, and liquid level sensor II 33 is electrically connected to clean liquid level alarm 15. Drainage pipe 22 is fixedly connected to the bottom of solvent cup I 18, and drain valve 10 is fixedly installed on drain pipe 22.

[0057] The dirty liquid level alarm 12 and the liquid level sensor I 21 are electrically connected, and the clean liquid level alarm 15 and the liquid level sensor II 33 are electrically connected. The dirty liquid level alarm 12 and the clean liquid level alarm 15 are disposed on the surface of the main unit 11 of the cleaning machine.

[0058] The side wall of the cleaning machine 2 is provided with a drain pipe 8, and a valve 7 is fixedly installed at the end of the drain pipe 8; a pressure transmitter 31 is fixedly installed on the connecting pipe II 25, and the pressure transmitter 31 is electrically connected to the pressure display screen 36, which is fixedly installed on the surface of the cleaning machine main unit 11.

[0059] The model of the cleaning machine 2 is G-100S.

[0060] The model numbers of the waste liquid level alarm 12 and the clean liquid level alarm 15 are: TB50-3T-DJ.

[0061] The model numbers of liquid level sensor I21 and liquid level sensor II33 are: XKC-Y23A-V.

[0062] The cleaning method of this cleaning device includes the following steps: 1) Install the instrument to be cleaned onto the surface of the hollow tube 4 through the instrument mounting head 6. The hollow tube 4, the instrument mounting head 6, the inner cavity of the instrument, the exhaust port pipe 9, the cleaning port pipe 5, the connecting pipe I 20, and the connecting pipe IV 32 form a sealed space; fill the solvent cup II 19 with cleaning agent; close the pressure relief valve 16, turn on the power switch 17 of the cleaning machine host 11, start the motor 29, drive the vacuum pump 26 to start running, and start to draw a vacuum into the connected vacuum pipe 28 and the connecting pipe II 25. The two hollow pipes 24, the solvent cup I 18, and the connecting pipe III 27 form a vacuum state.

[0063] 2) Open the three-way control valve 30, and the connecting pipe Ⅲ27 and the connecting pipe Ⅰ20 are connected to each other. The connecting pipe Ⅴ35 is closed. At this time, the connecting pipe Ⅰ20, the cleaning interface pipe 5, the instrument mounting head 6, the hollow pipe 4, the inner cavity of the instrument, and the exhaust interface pipe 9 form a sealed space in a vacuum state.

[0064] 3) Open the three-way control valve 30 to connect pipe V35 and pipe I20. Open the sealing plug II34. The cleaning agent in solvent cup II19 is forced into pipe V35 and pipe I20 by atmospheric pressure, and then enters the cleaning interface pipe 5, instrument mounting head 6 and the inner cavity of the instrument for cleaning.

[0065] 4) Add water to the cleaning machine 2, turn on the cleaning machine 2, and start the vibration mode. Ultrasonic waves can propagate in liquids, causing the liquid and the cleaning tank of the cleaning machine 2 to vibrate together at the ultrasonic frequency. During vibration, the insoluble dirt adhering to the inner surface of the pressure gauge can be destroyed, making it easier to disperse in the cleaning liquid. When the particles are coated with oil and adhere to the inner surface of the pressure gauge, the oil is emulsified and the solid particles are detached, thereby thoroughly cleaning the oil adhering to the inner surface of the pressure gauge. After cleaning is completed, valve 7 can be opened to drain the water added to the cleaning machine 2 through drain pipe 8.

[0066] 5) After cleaning, turn the three-way control valve 30 to connect the connecting pipe III 27 and the connecting pipe I 20, and close the connecting pipe V 35. The aforementioned sealed space enters a vacuum state. Open the pressure relief valve 16, and the cleaning solution in the instrument cavity will enter the hollow pipe 24 through the cleaning interface pipe 5 and the connecting pipe I 20. The cleaning solution in the hollow pipe 24 flows out from the top and settles from the bottom to the top in the solvent cup I 18. After it is full, the cleaning solution in the solvent cup I 18 will be discharged through the drain pipe 22 by opening the drain valve 10. When the cleaning solution level in I18 reaches its maximum value, level sensor I21 transmits the signal indicating that the cleaning solution has reached its maximum value to the drain alarm 12; when the cleaning agent level in solvent cup II19 reaches its minimum value, level sensor II33 transmits the signal indicating that the cleaning agent level has reached its minimum value to the clean liquid level alarm 15; the pressure transmitter 31 can monitor the vacuum working status of connecting pipe II25, vacuum pipe 28, connecting pipe 27 and solvent cup I18, and can transmit the numerical range to the surface of pressure display screen 36.

Claims

1. A pressure gauge cleaning device comprising a cleaning machine (2), characterized in that: The port of the cleaning machine (2) is fixedly installed with a hollow pipe (4), the surface of the hollow pipe (4) is fixedly installed with an instrument mounting head (6), one end of the hollow pipe (4) is fixedly installed with a cleaning interface pipe (5), the other end of the hollow pipe (4) is fixedly installed with an exhaust interface pipe (9), the other end of the exhaust interface pipe (9) is fixedly installed on an exhaust interface (14), the other end of the cleaning interface pipe (5) is fixedly installed on a cleaning interface (13), the cleaning interface (13) and the exhaust interface (14) are fixedly installed on the surface of a cleaning machine host (11), the cleaning machine host (11) is fixedly installed with a solvent cup I (18) and a solvent cup II (19), the solvent cup I (18) is fixedly installed with hollow pipes (24), the number of the hollow pipes (24) is two, the bottom end of one hollow pipe (24) is fixedly connected with a connecting pipe II (25), the bottom end of the other hollow pipe (24) is fixedly connected with a communicating pipe III (27); the connecting pipe II (25) is communicated with a vacuum pipe (28), the number of the vacuum pipe (28) is two, the two vacuum pipes (28) are connected with a vacuum pump (26) respectively, the number of the vacuum pump (26) is two, a shaft coupling is fixedly installed between the two vacuum pumps (26), the shaft coupling is fixedly connected with a motor (29), the bottom end of the cleaning interface (13) is fixedly connected with a connecting pipe I (20), the other end of the connecting pipe I (20) is communicated with the communicating pipe III (27) and a connecting pipe V (35), the connecting pipe V (35) is communicated with the solvent cup II (19); the bottom end of the exhaust interface (14) is fixedly connected with a connecting pipe IV (32); the end of the connecting pipe IV (32) is fixedly installed with a pressure relief valve (16); a three-way control valve (30) is fixedly installed at the connection between the connecting pipe I (20), the communicating pipe III (27) and the connecting pipe V (35); the solvent cup I (18) and the solvent cup II (19) are respectively provided with a liquid level sensor I (21) and a liquid level sensor II (33), the liquid level sensor I (21) is electrically connected with a pollution discharge alarm (12), the liquid level sensor II (33) is electrically connected with a clean liquid level alarm (15); the bottom of the solvent cup I (18) is fixedly connected with a pollution discharge pipe (22), the pollution discharge pipe (22) is fixedly installed with a pollution discharge valve (10); the sidewall of the cleaning machine (2) is provided with a drain pipe (8), the end of the drain pipe (8) is fixedly installed with a valve (7); a pressure transmitter (31) is fixedly installed on the connecting pipe II (25), the pressure transmitter (31) is electrically connected with a pressure display screen (36), the pressure display screen (36) is fixedly installed on the surface of the cleaning machine host (11).

2. The method of claim 1, wherein: The method comprises the following steps: Step 1) install the instrument to be cleaned on the surface of the hollow tube (4) through the instrument mounting head (6), the hollow tube (4), the instrument mounting head (6), the inner cavity of the instrument, the exhaust interface pipeline (9), the cleaning interface pipeline (5), the connecting pipeline I (20), the connecting pipeline IV (32) form a closed space; load the cleaning agent in the solvent cup II (19); close the pressure relief valve (16), open the power switch (17) of the cleaning machine host (11), the motor (29) starts to drive the vacuum pump (26) to start running, starts to vacuum the connected vacuum pipeline (28) and the connecting pipeline II (25), the two hollow pipelines (24), the solvent cup I (18) and the communication pipeline III (27) form a vacuum state; Step 2) open the three-way control valve (30), the communication pipeline III (27) and the connecting pipeline I (20) are connected, the connecting pipeline V (35) is closed, at this time the connecting pipeline I (20), the cleaning interface pipeline (5), the instrument mounting head (6), the hollow tube (4), the inner cavity of the instrument, the exhaust interface pipeline (9) form a closed space in a vacuum state; Step 3) open the three-way control valve (30), the connecting pipeline V (35) and the connecting pipeline I (20) are connected, open the sealing plug II (34), the cleaning agent in the solvent cup II (19) is pressed into the connecting pipeline V (35) and the connecting pipeline I (20) by atmospheric pressure, then into the cleaning interface pipeline (5), the instrument mounting head (6), the inner cavity of the instrument, and clean; Step 4) add water to the cleaning machine (2), open the cleaning machine (2), the cleaning machine (2) can vibrate and clean the instrument in the inner cavity of the cleaning machine (2), after vibration and cleaning, the water added in the cleaning machine (2) is discharged; Step 5) after cleaning, rotate the three-way control valve (30) to connect the communication pipeline III (27) and the connecting pipeline I (20), close the connecting pipeline V (35), open the pressure relief valve (16), the cleaning solution in the inner cavity of the instrument will enter the hollow pipeline (24) through the cleaning interface pipeline (5) and the connecting pipeline I (20), the cleaning solution in the hollow pipeline (24) flows out at the top and deposits upward from the bottom in the solvent cup I (18), when full, open the blowdown valve (10) to discharge the cleaning solution in the solvent cup I (18) through the blowdown pipeline (22).

3. A method of cleaning a pressure gauge cleaning device as claimed in claim 2, wherein: In step 5), the liquid level sensor I (21) is arranged at the port of the solvent cup I (18), when the liquid level of the cleaning solution in the solvent cup I (18) reaches the maximum value, the liquid level sensor I (21) transmits the signal that the cleaning solution reaches the maximum value to the blowdown alarm (12); the liquid level sensor II (33) is arranged at the bottom of the solvent cup II (19), when the liquid level of the cleaning agent in the solvent cup II (19) reaches the minimum value, the liquid level sensor II (33) transmits the signal that the cleaning agent reaches the minimum value to the clean liquid level alarm (15).

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