Automatic liquid level control device of vacuum oil purifier
Through the liquid level control mechanism, the high cost and failure rate of the automatic liquid level control device of the vacuum oil purification machine is solved, and the stability of the liquid level and moisture recovery efficiency are improved.
Patent Information
- Application Number
- CN202422199306.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing automatic liquid level control device of vacuum oil purification machine requires multiple sensing equipment to control the oil inlet and oil output respectively, resulting in high production costs and easy control mechanism failure.
The liquid level control mechanism is adopted, including a carrier frame, a pressure sensor, a spring group and a moving plate, and the pressure sensor detects the change in the oil gravity, controls the opening and closing of the first and second electric valves, simplifies the structure and ensures the stability of the liquid level.
It reduces production costs, reduces equipment failure rate, and improves moisture recovery efficiency through the combination of atomizer and condenser to ensure liquid level stability.
Smart Images
Figure CN223092342U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vacuum oil purifiers, and particularly to an automatic liquid level control device for a vacuum oil purifier. Background Art
[0002] A vacuum oil purifier, also known as a vacuum high-efficiency oil filter, its main function is to remove impurities, gases and moisture in the oil through vacuum technology, so as to achieve the effect of purifying the oil. It usually consists of a vacuum tank, a condenser, a primary filter box, a water tank, a vacuum pump, an oil discharge pump, etc.; the vacuum pump pumps out the air in the vacuum tank to form a vacuum. Under the action of atmospheric pressure, the external oil enters the primary filter through the inlet pipeline, removes larger particles, and then enters the heating tank. The oil at 40 - 75 °C after heating passes through an automatic oil float valve, which automatically controls the balance of the oil volume entering and leaving the vacuum tank. During its normal use, the liquid level of the oil entering the vacuum tank is very crucial. Too high or too low will affect the vacuum oil purification effect, so it needs to be controlled.
[0003] In the related art, there is a designed constant liquid level automatic control device, including a solenoid valve, a vacuum tank, a liquid level transmitter, a first motor, an oil discharge pump, a second motor, an oil supply pump, the middle line of the window, the low liquid level, the liquid level upper limit, a PLC, a first frequency converter, a second frequency converter, etc. This device performs PID adjustment according to the set value and actual value of the oil level, controls the frequency converter through the PLC, thereby controlling the frequencies of the oil supply and discharge pump motors, and controlling the oil inlet and outlet flow rates to keep the oil level in the vacuum tank constant.
[0004] Aiming at the above-mentioned related technology, there are the following problems. This device needs multiple sensing devices to separately control and monitor the oil inlet and outlet amounts during the actual working process, resulting in a relatively high production cost, and it is prone to control mechanism failures due to frequent regulation of the oil outlet amount, so it needs to be improved. Utility Model Content
[0005] In order to reduce the cost of regulating the oil outlet amount of the vacuum oil purifier and the probability of the vacuum oil purifier malfunctioning, this application provides an automatic liquid level control device for a vacuum oil purifier.
[0006] The automatic liquid level control device for a vacuum oil purifier provided by this application adopts the following technical solution:
[0007] An automatic liquid level control device for a vacuum oil purifier includes a vacuum tank and a vacuum pump. The vacuum pump is connected to a water collection tank, and a drain pipe is provided on the water collection tank. The other end of the drain pipe is connected to the vacuum tank. A housing is provided on one side of the vacuum tank, and a liquid inlet pipe is provided on the housing. The liquid inlet pipe is connected to the vacuum tank. The housing adds oil to the vacuum tank through the liquid inlet pipe. An electric heating pipe is provided in the housing, a liquid level control mechanism is provided in the vacuum tank, and a second electric valve is provided at the bottom of the vacuum tank.
[0008] By adopting the above technical solution, the liquid level control mechanism can effectively solve the problems of the existing liquid level automatic control device that requires multiple sensing devices to separately control and monitor the oil inlet volume and oil outlet volume during the actual working process, resulting in high production costs and being prone to control mechanism failures due to frequent regulation of the oil outlet volume.
[0009] Optionally, the liquid level control mechanism includes a carrier frame, a plurality of pressure sensors, a plurality of spring groups and a moving plate. The pressure sensors and the spring groups are arranged in one-to-one correspondence. The carrier frame is arranged above the second electric valve. The pressure sensors are arranged on the surface of the carrier frame. The spring groups are arranged on the pressure sensors. The spring groups are arranged vertically. The moving plate is arranged above the spring groups. The spring groups abut against the bottom wall of the moving plate. An fixing plate is arranged above the moving plate. The first electric valves are arranged on both the fixing plate and the moving plate.
[0010] By adopting the above technical solution, when the oil liquid in the vacuum tank increases, the gravity borne by the moving plate increases synchronously, thereby compressing the spring groups and generating a pressure value on the pressure sensors. At this time, the liquid level at the top of the moving plate will not change under the support of the spring groups, thus ensuring the stability of the liquid level. When the pressure sensors detect that the pressure value reaches the set range, the first electric valve on the fixing plate will close, and the first electric valve and the second electric valve on the moving plate will be started synchronously, so that the position of the oil liquid above the fixing plate remains unchanged, and the oil liquid below the fixing plate is discharged through the second electric valve. Thereby, while ensuring the stability of the liquid level, the structure of the device is simplified, the production cost and the equipment failure rate are reduced.
[0011] Optionally, a control panel is arranged on the shell. The first electric valve, the second electric valve and the pressure sensors are all electrically connected to the control panel.
[0012] By adopting the above technical solution, setting the control panel can perform more accurate and automatic control on the first electric valve, the second electric valve and the pressure sensors, making the production process more efficient.
[0013] Optionally, mounting grooves for arranging the pressure sensors are formed on the surface of the carrier frame.
[0014] By adopting the above technical solution, forming the mounting grooves can effectively prevent the pressure sensors from detaching from the carrier frame during the working process, so as to improve the mounting stability of the pressure sensors, and further improve the accuracy during the working process of the liquid level control mechanism of the present application.
[0015] Optionally, an atomizer is arranged in the vacuum tank, and the atomizer is communicated with the liquid inlet pipe.
[0016] By adopting the above technical solution, the atomizer can spray the oil liquid in the form of water mist into the vacuum tank, thereby improving the separation effect of water and oil liquid and effectively improving the quality of the oil product and production.
[0017] Optionally, a condenser is arranged in the water collecting tank, and the condenser is communicated with the vacuum tank through a drain pipe.
[0018] By adopting the above technical solution, arranging the condenser can quickly cool down the water separated from the oil liquid to improve the collection efficiency of the water.
[0019] Optionally, a connecting flange is arranged at the input end of the housing.
[0020] By adopting the above technical solution, arranging the connecting flange improves the convenience of connecting the input end of the housing with other devices.
[0021] Optionally, a backing plate is arranged below the vacuum tank, and the vacuum pump, the water collecting tank, and the vacuum tank are all arranged on the surface of the backing plate.
[0022] By adopting the above technical solution, arranging the backing plate can effectively protect devices such as the vacuum pump, the water collecting tank, and the vacuum tank, thereby improving the stability and safety of the device in the application during operation.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. When the oil liquid in the vacuum tank increases, the gravity borne by the moving plate increases synchronously, thereby compressing the spring group and generating a pressure value on the pressure sensor. At this time, with the support of the spring group, the liquid level at the top of the moving plate will not change, thus ensuring the stability of the liquid level. When the pressure sensor detects that the pressure value reaches the set range, the first electric valve on the fixed plate will close, and the first electric valve and the second electric valve on the moving plate will be started synchronously, so that the position of the oil liquid above the fixed plate remains unchanged, and the oil liquid below the fixed plate is discharged through the second electric valve, thereby ensuring the liquid level stability while simplifying the structure of the device, reducing the production cost and the equipment failure rate;
[0025] 2. The present application can effectively solve the problem of low water vapor recovery efficiency through the combined use of the drain pipe and the atomizer. After the hot oil liquid mixed with water sprayed by the atomizer enters the vacuum tank after pressure regulation, due to the lower boiling point inside the vacuum tank, the water in the hot oil liquid quickly vaporizes, and under the pumping action of the vacuum pump, it enters the inside of the condenser through the drain pipe located at the center of the top of the vacuum tank on one side of the atomizer to form condensed water, thereby improving its recovery efficiency. Description of the Drawings
[0026] Figure 1It is a schematic structural diagram of a liquid level automatic control device for a vacuum oil purifier in an embodiment of the present application.
[0027] Figure 2 It is a schematic structural diagram of a liquid level control mechanism in an embodiment of the present application.
[0028] Figure 3 It is a schematic structural diagram of the interior of the housing in an embodiment of the present application.
[0029] Description of reference numerals: 1, vacuum tank; 2, liquid level control mechanism; 201, carrier frame; 202, installation groove; 203, pressure sensor; 204, spring group; 205, moving plate; 206, first electric valve; 3, fixing plate; 4, second electric valve; 5, atomizer; 6, liquid inlet pipe; 7, housing; 8, electric heating tube; 9, connecting flange; 10, control panel; 11, drain pipe; 12, condenser; 13, water collection tank; 14, vacuum pump; 15, backing plate. Detailed implementation manners
[0030] The following further describes the present application in detail Figures 1-3 with reference to the accompanying drawings.
[0031] An embodiment of the present application discloses a liquid level automatic control device for a vacuum oil purifier. Referring to Figure 1 , Figure 2 and Figure 3 , it includes a backing plate 15, a vacuum tank 1 and a vacuum pump 14. The vacuum tank 1 and the vacuum pump 14 are both arranged on the surface of the backing plate 15. A housing 7 is arranged on one side of the vacuum pump 14. An electric heating tube 8 is arranged inside the housing 7. A liquid inlet pipe 6 is arranged at the top of the housing 7. The liquid inlet pipe 6 is communicated with the vacuum tank 1 to add oil liquid into the vacuum tank 1. An atomizer 5 is arranged inside the vacuum tank 1. The atomizer 5 is communicated with the liquid inlet pipe 6 to facilitate the separation of water and oil liquid. In this embodiment, a connecting flange 9 is arranged at the input end of the housing 7 to facilitate the connection of pipelines and other equipment.
[0032] Referring to Figure 1 , a water collection tank 13 is also arranged on the surface of the backing plate 15. The vacuum pump 14 is communicated with the water collection tank 13. A drain pipe 11 is arranged at the top of the water collection tank 13. The other end of the drain pipe 11 is communicated with the vacuum tank 1. After the vacuum pump 14 is started, the water vapor in the vacuum tank 1 will be pumped out through the drain pipe 11. A condenser 12 is arranged inside the water collection tank 13. The drain pipe 11 is communicated with the condenser 12 to improve the liquefaction rate of the water vapor.
[0033] Referring to Figure 1 and Figure 2, a liquid level control mechanism 2 for controlling the oil liquid level is arranged in the vacuum tank 1. The liquid level control mechanism 2 includes a carrier 201, a plurality of groups of pressure sensors 203, a plurality of spring groups 204 and a moving plate 205. Among them, the pressure sensors 203 and the spring groups 204 are arranged in one-to-one correspondence; the carrier 201 is annular, the carrier 201 is connected to the inner wall of the vacuum tank 1, and an annular installation groove 202 is formed on the surface of the carrier 201 for installing the pressure sensors 203. The spring groups 204 are arranged vertically on the surfaces of the corresponding pressure sensors 203, and the moving plate 205 is arranged at the top of the spring groups 204. In this embodiment, the spring group 204 includes a spring and a guide rod. The spring is sleeved on the peripheral wall of the guide rod, and the top of the spring exceeds the guide rod and abuts against the bottom end of the moving plate 205. When the pressure at the top end of the moving plate 205 increases, the spring will be compressed until the moving plate 205 abuts against the guide rod and transmits pressure to the pressure sensor 203.
[0034] Referring to Figure 1 and Figure 2 , a fixed plate 3 is arranged above the moving plate 205. A plurality of first electric valves 206 are arranged on both the fixed plate 3 and the moving plate 205. A second electric valve 4 is arranged at the bottom end of the vacuum tank 1; a control panel 10 is arranged on the outer wall of the housing 7. In this embodiment, the control panel 10 adopts a PLC controller. The first electric valve 206, the second electric valve 4 and the pressure sensor 203 are all electrically connected to the control panel 10 for convenient automatic control.
[0035] The implementation principle of the liquid level automatic control device of a vacuum oil purifier in an embodiment of the present application is as follows: The housing 7 adds oil liquid into the vacuum tank 1 through the liquid inlet pipe 6 and the atomizer 5. The vacuum pump 14 is started to extract the water mixed in the oil liquid and cool and collect it through the condenser 12; when the oil liquid in the vacuum tank 1 increases, the gravity borne by the moving plate 205 increases synchronously, thereby compressing the spring group 204 and generating a pressure value on the pressure sensor 203. At this time, the liquid level at the top of the moving plate 205 will not change under the supporting action of the spring group 204, so as to ensure the stability of the liquid level. When the pressure sensor 203 detects that the pressure value reaches the set range, the first electric valve 206 on the fixed plate 3 will close, and the first electric valve 206 and the second electric valve 4 on the moving plate 205 are started synchronously, so that the position of the oil liquid above the fixed plate 3 remains unchanged, and the oil liquid below the fixed plate 3 is discharged through the second electric valve 4. Thereby, while ensuring the stability of the liquid level, the structure of the device is simplified, the production cost and the equipment failure rate are reduced.
[0036] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.
Claims
1. An automatic liquid level control device for a vacuum oil purifier, comprising a vacuum tank (1) and a vacuum pump (14), characterized in that: The vacuum pump (14) is connected to a water collecting tank (13). A drain pipe (11) is provided on the water collecting tank (13). The other end of the drain pipe (11) is connected to a vacuum tank (1). A housing (7) is provided on one side of the vacuum tank (1). An inlet pipe (6) is provided on the housing (7). The inlet pipe (6) is connected to the vacuum tank (1). The housing (7) adds oil to the vacuum tank (1) through the inlet pipe (6). An electric heating pipe (8) is provided in the housing (7). A liquid level control mechanism (2) is provided in the vacuum tank (1). A second electric valve (4) is provided at the bottom of the vacuum tank (1).
2. The automatic liquid level control device of a vacuum oil purifier according to claim 1, wherein: The liquid level control mechanism (2) includes a carrier (201), a number of pressure sensors (203), a number of spring groups (204) and a moving plate (205). The pressure sensors (203) and the spring groups (204) are arranged in one-to-one correspondence. The carrier (201) is arranged above the second electric valve (4). The pressure sensors (203) are arranged on the surface of the carrier (201). The spring groups (204) are arranged on the pressure sensors (203). The spring groups (204) are arranged vertically. The moving plate (205) is arranged above the spring groups (204). The spring groups (204) abut against the bottom wall of the moving plate (205). A fixing plate (3) is provided above the moving plate (205). First electric valves (206) are provided on both the fixing plate (3) and the moving plate (205).
3. The automatic liquid level control device for a vacuum oil purifier according to claim 2, wherein: A control panel (10) is provided on the housing (7). The first electric valve (206), the second electric valve (4) and the pressure sensors (203) are all electrically connected to the control panel (10).
4. The automatic liquid level control device for a vacuum oil purifier according to claim 2, characterized in that: Installation grooves (202) for arranging the pressure sensors (203) are formed on the surface of the carrier (201).
5. The automatic liquid level control device for a vacuum oil purifier according to claim 1, characterized in that: An atomizer (5) is provided in the vacuum tank (1). The atomizer (5) is connected to the inlet pipe (6).
6. The automatic liquid level control device for a vacuum oil purifier according to claim 1, characterized in that: A condenser (12) is provided in the water collecting tank (13). The condenser (12) is connected to the vacuum tank (1) through the drain pipe (11).
7. The automatic liquid level control device for a vacuum oil purifier according to claim 1, wherein: A connecting flange (9) is provided at the input end of the housing (7).
8. The automatic liquid level control device for a vacuum oil purifier according to claim 1, characterized in that: A backing plate (15) is provided below the vacuum tank (1). The vacuum pump (14), the water collecting tank (13) and the vacuum tank (1) are all arranged on the surface of the backing plate (15).