Bourdon tube branch group cleaning equipment and method

Abstract

The invention provides bourdon tube branch group cleaning equipment and method, relates to the field of pressure gauge manufacturing, is used for branch group cleaning after bourdon tube welding, and comprises a hot water tank, a cleaning tank and an electric control box. Wherein the hot water tank comprises a circulating water pump required by circulation of cleaning water, a heating pipe for heating the circulating water, a water inlet pneumatic valve for controlling water inlet, a water drainage pneumatic valve for controlling water drainage, a cleaning pneumatic valve for controlling cleaning water, a backflow pneumatic valve for controlling backflow water, a liquid level sensor for protecting a heater, a temperature sensor for controlling water temperature and the like; the cleaning box comprises a water distribution manifold, a switching clamp which is arranged on the water distribution manifold and is used for fixing a Bourdon tube branch group, a filter screen and the like; the electrical control box comprises a circuit breaker, a contactor, a programmable logic controller and a touch screen.

Description

Technical Field

[0001] The present application belongs to the technical field of pressure gauge manufacturing, and specifically relates to a Bourdon tube branch group cleaning device and method. Background Art

[0002] Bourdon tubes are elastic sensitive elements that use the bending or torsional deformation of the tube to measure pressure. Commonly used types are C-type, spiral type and twist type. They are commonly used sensitive elements in the manufacture of pressure gauges. During the welding, cutting and deburring process of the Bourdon tube branch group, impurities such as welding flux and metal chips are easily left in the inner cavity of the branch group. In order to maintain its accuracy and reliability, extend its service life and prevent potential failures, the Bourdon tube branch group must be cleaned.

[0003] Generally, chemical cleaning, high-pressure water jet cleaning, ultrasonic cleaning and other methods are used. These methods have obvious effects on removing impurities on the surface of the branch group, but are not effective in cleaning the inner cavity of the branch group. In order to effectively remove impurities remaining in the inner cavity of the Bourdon tube branch group, a Bourdon tube branch group cleaning equipment was designed and developed. Summary of the invention

[0004] Purpose of the invention: To provide an automatic device for cleaning the inner cavity of a Bourdon tube branch group, which can control the temperature, pressure and flushing pulse time of the cleaning medium.

[0005] In a first aspect, the present application provides a Bourdon tube branch group cleaning device, the cleaning device comprising:

[0006] Hot water tank 1, used for storing and heating cleaning water;

[0007] A cleaning tank 2 is arranged on the hot water tank, the cleaning tank 2 is connected to the hot water tank 1, and the cleaning tank 2 is used to clean the inner cavity of the Bourdon tube branch group in a pulsating water flow manner;

[0008] The electrical control box 3 is electrically connected to the hot water tank 1 and the cleaning tank 2. The electrical control box 3 is used to control the temperature of the cleaning water in the hot water tank 1 and control the cleaning tank 2 to clean the inner cavity of the Bourdon tube branch group in a pulsating water flow manner.

[0009] Preferably, the cleaning device further comprises a circulating water pump 30 fixed outside the hot water tank 1 , and a cleaning pneumatic valve 29 and a reflux pneumatic valve 28 are arranged behind the circulating water pump.

[0010] Preferably, the cleaning device further comprises a water inlet pneumatic valve 24 and a water outlet pneumatic valve 22 arranged outside the hot water tank 1.

[0011] Preferably, the hot water tank 1 comprises a hot water tank body 21 , in which L-shaped heating pipes 27 are evenly distributed, and the L-shaped heating pipes 27 are fixed to the side of the hot water tank body 21 .

[0012] Preferably, the hot water tank 1 further comprises a liquid level sensor 25 and a temperature sensor 26 fixed to the side of the hot water tank body 21;

[0013] The liquid level of the hot water tank 1 is read by a liquid level sensor 25 , and the temperature of the hot water tank 1 is read by a temperature sensor 26 .

[0014] Preferably, the cleaning box 2 includes a cleaning box body 21, a filter screen 32 disposed inside the cleaning box body, a water distribution manifold 33 disposed inside the cleaning box body and connected to the water inlet pneumatic valve, and a transfer fixture 34 fixed on the water distribution manifold 33;

[0015] The Bourdon tube branch group is threadedly connected to the adapter fixture 34, and a water hole is provided in the center of the threaded hole.

[0016] In a second aspect, the present application also provides a method for cleaning a Bourdon tube branch group, the cleaning method comprising:

[0017] Step 1: Install the Bourdon tube support assembly on the adapter fixture fixed on the water distribution manifold through threads;

[0018] Step 2: The cleaning equipment automatically maintains the height and temperature of the cleaning water;

[0019] Step 3, start cleaning, the equipment cyclically and intermittently controls the flushing pneumatic valve and the reflux pneumatic valve, and cleans the Bourdon tube branch group through pulsating water flow. After the cleaning time is reached, the equipment automatically stops cleaning and waits for the next batch of Bourdon tube branch groups to be cleaned.

[0020] Preferably, step 2 comprises:

[0021] The liquid level sensor installed in the cleaning tank feeds back the liquid level signal in the cleaning tank to the electrical control box in real time. When the liquid level is lower than the heating water level, the water inlet pneumatic valve is opened to replenish water; when the liquid level is higher than the heating water level, the water inlet pneumatic valve is closed, thereby realizing automatic control of the liquid level height;

[0022] The temperature sensor installed in the cleaning box will feed back the temperature signal of the cleaning water in the cleaning box to the electrical control box in real time. When the temperature is lower than 70℃, the heating pipe will be turned on to heat the cleaning water; when the temperature is higher than 80℃, the heating pipe will be stopped to achieve automatic control of the cleaning water temperature.

[0023] Preferably, the step 3 comprises:

[0024] When the temperature reaches the set temperature range, set the required flushing time on the touch screen on the electrical control box, start cleaning, and the electrical control box starts the circulating water pump. The electrical control box opens the flushing pneumatic valve for 5 seconds, and the circulating water flows into the flushing box to flush the inner cavity of the Bourdon tube branch group once;

[0025] The electrical control box closes the flushing pneumatic valve and opens the return pneumatic valve for 5 seconds. The circulating water flows back to the hot water tank through the return pipeline to reduce the pressure of the circulating water in the pipeline.

[0026] By cycling the above steps, the pulsating water flow is controlled to enter the water distribution manifold, thereby flushing the inner cavities of multiple Bourdon tube branch groups;

[0027] When the flushing time is over, the equipment automatically stops flushing and waits for the next batch of Bourdon tube branches to be cleaned.

[0028] This application has the following technical effects:

[0029] Provided is an automatic device for cleaning the inner cavity of a Bourdon tube branch group, which can automatically clean multiple Bourdon tube branches, automatically control the cleaning water pressure, automatically control the cleaning water temperature and prevent the heating tube from being damaged due to dry burning, and adjust the pulsation time of the cleaning water flushing. After reaching the preset flushing time, the cleaning work is automatically stopped.

[0030] The invention has a simple structure, is convenient to install the cleaned parts, is easy to operate, can automatically complete the cleaning work of the Bourdon tube branch group, and greatly improves the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0032] Figure 2 It is a top view of the hot water tank;

[0033] Figure 3 A top view of the cleaning box;

[0034] Among them, 1-hot water tank, 2-cleaning tank, 3-electrical control box, 201-hot water tank body, 202-drainage pneumatic valve, 203-water inlet manual valve, 204-water inlet pneumatic valve, 205-liquid level sensor, 206-temperature sensor, 207-L-type heating tube, 208-reflux pneumatic valve, 209-cleaning pneumatic valve, 210-circulating water pump, 301-cleaning tank body, 302-filter, 303-water distribution manifold, 304-adapter clamp. DETAILED DESCRIPTION

[0035] The present invention discloses a Bourdon tube branch cleaning device, which relates to the field of pressure gauge manufacturing and is used for cleaning the branch after Bourdon tube welding. A Bourdon tube branch cleaning device includes a hot water tank, a cleaning tank and an electrical control box. The hot water tank includes a circulating water pump required for the circulation of cleaning water, a heating pipe for heating the circulating water, a water inlet pneumatic valve for controlling water inlet, a drainage pneumatic valve for controlling drainage, a cleaning pneumatic valve for controlling cleaning water, a reflux pneumatic valve for controlling reflux water, a liquid level sensor for protecting the heater, a temperature sensor for controlling the water temperature, etc.; the cleaning tank includes a water distribution manifold, a transfer fixture and a filter screen arranged on the water distribution manifold to fix the Bourdon tube branch; the electrical control box includes a circuit breaker, a contactor, a programmable logic controller, a touch screen, etc.

[0036] This equipment can provide appropriate water temperature, water pressure and cycle control pulse flushing interval time according to process parameters, and can effectively remove impurities such as welding flux left by welding and metal chips left by drilling in the inner cavity of the Bourdon tube branch group.

[0037] The technical solution of the present invention is: a Bourdon tube branch group cleaning device, comprising a hot water tank for storing and heating cleaning water, a cleaning box arranged on the hot water tank, and an electrical control box for controlling electrical equipment.

[0038] A water inlet pneumatic valve is arranged on the outside of the hot water tank, and the water inlet pneumatic valve is connected to the water inlet of the hot water tank.

[0039] A circulating water pump is provided on the outside of the hot water tank, and a flushing pneumatic valve and a reflux pneumatic valve are provided behind the circulating water pump. The circulating water pump is connected to the flushing pneumatic valve and the reflux pneumatic valve through a tee. The flushing pneumatic valve is connected to the water distribution manifold in the flushing tank through a pipeline, and the reflux pneumatic valve is connected to the reflux port on the hot water tank through a pipeline.

[0040] A drainage pneumatic valve is arranged on the outside of the hot water tank, and the drainage pneumatic valve is connected to the drainage port of the hot water tank.

[0041] A heating pipe installation hole is provided on the side of the hot water tank, and the L-shaped heating pipe is mechanically connected to the hot water tank through the installation hole, and the heating area of ​​the heating pipe is evenly distributed at the bottom of the hot water tank.

[0042] A liquid level sensor mounting hole is provided on the side of the hot water tank, and the liquid level sensor is fixed in the mounting hole to monitor the liquid level in the hot water tank.

[0043] A temperature sensor mounting hole is provided on the side of the hot water tank, and the temperature sensor is fixed in the mounting hole to monitor the temperature in the hot water tank.

[0044] A mounting bracket is provided at the bottom of the cleaning box, and the water distribution manifold is installed on the mounting bracket and fixed by a pipe clamp.

[0045] The water distribution manifold is provided with a threaded hole, a water through hole is provided at the center of the threaded hole, and the adapter clamp is installed in the threaded hole and is threadedly connected to the water distribution manifold.

[0046] A filter installation hole is provided at the bottom of the cleaning box, the filter is installed on the installation hole, and a grid-shaped drainage hole is provided on the filter. After cleaning, the cleaning water returns to the hot water tank through the filter.

[0047] See also Figure 1-Figure 3 , an automatic device for cleaning the inner cavity of a Bourdon tube branch group, a hot water tank 1, a water inlet pneumatic valve is arranged on the outside of the hot water tank, and the water inlet pneumatic valve is connected to the water inlet of the hot water tank.

[0048] A circulating water pump is provided on the outside of the hot water tank, and a flushing pneumatic valve and a reflux pneumatic valve are provided behind the circulating water pump. The circulating water pump is connected to the flushing pneumatic valve and the reflux pneumatic valve through a tee. The flushing pneumatic valve is connected to the water distribution manifold in the flushing tank through a pipeline, and the reflux pneumatic valve is connected to the reflux port on the hot water tank through a pipeline.

[0049] A drainage pneumatic valve is arranged on the outside of the hot water tank, and the drainage pneumatic valve is connected to the drainage port of the hot water tank.

[0050] A heating pipe installation hole is provided on the side of the hot water tank, and the L-shaped heating pipe is mechanically connected to the hot water tank through the installation hole, and the heating area of ​​the heating pipe is evenly distributed at the bottom of the hot water tank.

[0051] A liquid level sensor mounting hole is provided on the side of the hot water tank, and the liquid level sensor is fixed in the mounting hole to monitor the liquid level in the hot water tank.

[0052] A temperature sensor mounting hole is provided on the side of the hot water tank, and the temperature sensor is fixed in the mounting hole to monitor the temperature in the hot water tank.

[0053] A mounting bracket is provided at the bottom of the cleaning box, and the water distribution manifold is installed on the mounting bracket and fixed by a pipe clamp.

[0054] The water distribution manifold is provided with a threaded hole, a water through hole is provided at the center of the threaded hole, and the adapter clamp is installed in the threaded hole and is threadedly connected to the water distribution manifold.

[0055] The bottom of the cleaning box is provided with a filter installation hole, the filter is installed on the installation hole, and the filter is provided with a grid-shaped drainage hole.

[0056] The electrical control box is provided with a circuit breaker, a contactor, a programmable logic controller and a touch screen.

[0057] By adopting the above-mentioned technical solution, the programmable logic controller collects data from the liquid level sensor and automatically controls the water inlet pneumatic valve to add water to the hot water tank, thereby ensuring the water level for heating and flushing and preventing the heating tube from being damaged by dry burning.

[0058] By adopting the above-mentioned technical solution, the programmable logic controller collects data from the liquid level sensor and the temperature sensor, and controls the heating pipe to work when the liquid level is high enough, thereby maintaining a constant temperature of the cleaning water in the hot water tank.

[0059] By adopting the above technical solution, the programmable logic controller can cyclically and intermittently control the working time of the flushing pneumatic valve and the return pneumatic valve to provide the pulsating water flow required for cleaning. After the preset time is reached, the cleaning work is automatically stopped.

[0060] The specific implementation steps are as follows:

[0061] Step 1: Install the Bourdon tube support assembly on the adapter fixture fixed on the water distribution manifold through threads;

[0062] Step 2: The cleaning equipment automatically maintains the height and temperature of the cleaning water;

[0063] Step 3, start cleaning, the equipment cyclically and intermittently controls the flushing pneumatic valve and the reflux pneumatic valve, and cleans the Bourdon tube branch group through pulsating water flow. After the cleaning time is reached, the equipment automatically stops cleaning and waits for the next batch of Bourdon tube branch groups to be cleaned.

Claims

1. A Bourdon tube branch group cleaning device, characterized in that: The cleaning equipment comprises: A hot water tank (1) for storing and heating cleaning water; A cleaning tank (2) is arranged on the hot water tank, the cleaning tank (2) is connected to the hot water tank (1), and the cleaning tank (2) is used to clean the inner cavity of the Bourdon tube branch group in a pulsating water flow manner; An electrical control box (3) is electrically connected to the hot water tank (1) and the cleaning tank (2), and the electrical control box (3) is used to control the temperature of the cleaning water in the hot water tank (1) and to control the cleaning tank (2) to clean the inner cavity of the Bourdon tube branch group in a pulsating water flow manner.

2. The cleaning device according to claim 1, characterized in that: The cleaning equipment also includes a circulating water pump (30) fixed outside the hot water tank (1), and a cleaning pneumatic valve (29) and a reflux pneumatic valve (28) are arranged behind the circulating water pump.

3. The cleaning device according to claim 2, characterized in that: The cleaning device also includes a water inlet pneumatic valve (24) and a water outlet pneumatic valve (22) arranged outside the hot water tank (1).

4. The cleaning device according to claim 3, characterized in that: The hot water tank (1) comprises a hot water tank body (21), in which L-shaped heating pipes (27) are evenly distributed, and the L-shaped heating pipes (27) are fixed to the side of the hot water tank body (21).

5. The cleaning device according to claim 4, characterized in that: The hot water tank (1) further comprises a liquid level sensor (25) and a temperature sensor (26) fixed to the side of the hot water tank body (21); The liquid level of the hot water tank (1) is read by a liquid level sensor (25), and the temperature of the hot water tank (1) is read by a temperature sensor (26).

6. The cleaning device according to claim 5, characterized in that: The cleaning box (2) comprises a cleaning box body (21), a filter screen (32) arranged inside the cleaning box body, a water distribution manifold (33) arranged inside the cleaning box body and connected to the water inlet pneumatic valve, and a transfer fixture (34) fixed on the water distribution manifold (33); The Bourdon tube branch group is threadedly connected to the adapter clamp (34), and a water hole is provided at the center of the threaded hole.

7. A method for cleaning a Bourdon tube branch assembly, characterized in that: The cleaning method comprises: Step 1: Install the Bourdon tube support assembly on the adapter fixture fixed on the water distribution manifold through threads; Step 2: The cleaning equipment automatically maintains the height and temperature of the cleaning water; Step 3, start cleaning, the equipment cyclically and intermittently controls the flushing pneumatic valve and the reflux pneumatic valve, and cleans the Bourdon tube branch group through pulsating water flow. After the cleaning time is reached, the equipment automatically stops cleaning and waits for the next batch of Bourdon tube branch groups to be cleaned.

8. The method according to claim 7, characterized in that The step 2 comprises: The liquid level sensor installed in the cleaning tank feeds back the liquid level signal in the cleaning tank to the electrical control box in real time. When the liquid level is lower than the heating water level, the water inlet pneumatic valve is opened to replenish water; when the liquid level is higher than the heating water level, the water inlet pneumatic valve is closed, thereby realizing automatic control of the liquid level height; The temperature sensor installed in the cleaning box will feed back the temperature signal of the cleaning water in the cleaning box to the electrical control box in real time. When the temperature is lower than 70℃, the heating pipe will be turned on to heat the cleaning water; when the temperature is higher than 80℃, the heating pipe will be stopped to achieve automatic control of the cleaning water temperature.

9. The method according to claim 7, characterized in that: The step 3 comprises: When the temperature reaches the set temperature range, set the required flushing time on the touch screen on the electrical control box, start cleaning, and the electrical control box starts the circulating water pump. The electrical control box opens the flushing pneumatic valve for 5 seconds, and the circulating water flows into the flushing box to flush the inner cavity of the Bourdon tube branch group once; The electrical control box closes the flushing pneumatic valve and opens the return pneumatic valve for 5 seconds. The circulating water flows back to the hot water tank through the return pipeline to reduce the pressure of the circulating water in the pipeline. By cycling the above steps, the pulsating water flow is controlled to enter the water distribution manifold, thereby flushing the inner cavities of multiple Bourdon tube branch groups; When the flushing time is over, the equipment automatically stops flushing and waits for the next batch of Bourdon tube branches to be cleaned.

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