A dual-pipeline system temperature-controlled oil filter and a temperature and flow rate control method thereof

Abstract

The present invention discloses a dual-pipeline system temperature-controlled oil filter and a temperature and flow rate control method thereof, comprising an oil filter cart with a hollow structure, wherein an oil purification system and an oil refueling system are arranged inside the oil filter cart. The present invention realizes the temperature control function by controlling a flow solenoid valve by an electric control system through an intelligent algorithm for temperature and flow rate control, and controls two sets of pipeline systems through solenoid valves by the electric control system to realize asynchronous action and efficient refueling, thereby adding an emptying program and corresponding hardware, making it more convenient to replace the filter element without disassembling the pipeline, preventing oil from spilling and polluting the environment; by installing the integrated electric control system in the control cabinet, after simple integration, the equipment investment is small, the floor space occupied is small, the total investment is reduced, and it is more intelligent, which has great practical significance for promotion.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical oil filtering equipment, in particular to a dual-pipeline system temperature-controlled oil filter and a temperature and flow rate control method thereof. Background Art

[0002] Oil filter is mainly used in mining, metallurgy, petroleum, railway, machinery, chemical industry, textile, cement, power plant, instrumentation and other departments; it plays a great role in the purification and regeneration of various industrial lubricating oils that are polluted and deteriorated, and can extend the maintenance cycle and service life of equipment and reduce production costs; it can effectively remove pollutants in oil products such as: water, water-soluble acids, alkalis, mechanical impurities, etc., improve the kinematic viscosity, flash point, and emulsification of oil products; and then quickly restore the oil products to the required performance, close to or reaching the corresponding national new oil standards. The existing oil filter has the following defects in structure and operation:

[0003] Existing oil filters usually only have a single function of purifying and filtering oil products, and the hydraulic oil passed into the hydraulic station of a large hydraulic device can maintain the best performance only under appropriate temperature conditions. Therefore, there is a certain gap in the temperature control of the existing oil filters; at the same time, the existing oil filters do not have the function of adding new oil. The hydraulic station and other devices using hydraulic oil will consume a certain amount of oil during operation, so new oil needs to be added regularly, and the machine needs to be shut down when adding new oil, which makes the work efficiency very low and cannot meet the needs of enterprises; the precision filter element inside the oil filter needs to be replaced regularly, and the existing replacement method is to disassemble and assemble the pipeline, which is cumbersome and laborious, and does not have the corresponding integrated emptying hardware and corresponding emptying procedures; if the existing oil filter meets the above functions at the same time, the equipment investment in development is large, the floor space is large, and the degree of integration is low, which cannot meet the actual needs of the market. Summary of the invention

[0004] In view of the shortcomings of the above-mentioned prior art, the present application provides a dual-pipeline system temperature-controlled oil filter and a temperature and flow rate control method thereof, which overcomes the above-mentioned defects through a highly integrated, dual-pipeline system and a temperature control algorithm.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A dual-pipe system temperature-controlled oil filter, comprising an oil filter cart with a hollow structure, wherein an oil purification system and an oil refueling system are arranged inside the oil filter cart;

[0007] The oil purification system comprises a purification liquid inlet and a purification liquid outlet arranged in a staggered manner on one side of the interior of the oil filter cart, and a primary filter, a precision filter, an oil pump, and an air-cooled radiator arranged inside the oil filter cart, wherein the purification liquid inlet is connected to the inlet of the precision filter (100) through a first purification pipeline, the outlet of the precision filter (100) is connected to the inlet of the primary filter, the outlet of the primary filter is connected to the inlet of the oil pump through a flow solenoid valve, the outlet of the oil pump is connected to the inlet of the air-cooled radiator through a second purification pipeline, and the outlet of the air-cooled radiator is connected to the purification liquid outlet to form a purification system;

[0008] The oil refueling system includes a new oil inlet and a new oil outlet which are staggeredly arranged on one side of the purified liquid inlet. The new oil inlet is connected to the oil pump inlet through a first new oil pipeline, and the oil pump outlet is connected to the new oil outlet through a second new oil pipeline.

[0009] Furthermore, the first purification pipeline and the first new oil pipeline are integrated in a first solenoid valve to realize connection and disconnection, and the second purification pipeline and the second new oil pipeline are integrated in a second solenoid valve to realize connection and disconnection.

[0010] Furthermore, it also includes an exhaust pipeline, which is connected to the first solenoid valve.

[0011] Furthermore, a pressure sensor is installed on the periphery of the precision filter.

[0012] Furthermore, a control cabinet is embedded in the handrail of the oil filter cart, and an electric control system is arranged in the control cabinet. The electric control system includes a purification program for controlling the oil purification system, a filling program for controlling the oil filling system, and an emptying program for controlling the emptying action.

[0013] Furthermore, when the electronic control system is driven to work, asynchronous control is performed on the purification program and the addition program, that is, the two cannot be performed synchronously.

[0014] Furthermore, the pressure sensor is electrically connected to the electronic control system.

[0015] A method for controlling the temperature and flow rate of a temperature-controlled oil filter with a dual-pipe system, wherein the temperature and flow rate of the oil filter are determined by the formula:

[0016] J=(K·V·S)·γ C1 ·C

[0017] Control is performed, where: C is the heat capacity of the oil, K is the density of the oil, V is the flow rate of the oil, S is the process time for the oil to stabilize, C1 is the temperature of the oil during the process time S, γ C1is the correlation coefficient of the oil temperature C1, J is the heat exchange of the radiator, C2 and C3 are the preset high-efficiency oil temperature ranges, and when C1 is within [C2, C3], γ C1 =1; when C1>C3, γ C1 >1, that is, when the oil temperature is higher than C3, the electronic control system controls the flow solenoid valve to reduce the oil flow rate V to increase the residence time of the oil in the radiator, increase heat dissipation, and make C1 return to the [C2, C3] interval; when C1 < C2, γ C1 <1, that is, when the oil temperature is lower than C2, the electronic control system controls the flow solenoid valve to increase the oil flow rate V to reduce the residence time of the oil in the radiator, reduce heat dissipation, and make C1 return to the [C2, C3] interval.

[0018] The beneficial effects of the present invention are as follows:

[0019] The present invention has a compact and reasonable structure, is easy to operate and has the following significant improvements:

[0020] 1. The dual-pipeline system is realized by equipping the oil purification system and the oil refueling system. The two systems are integrated through the solenoid valve to realize the on-off. The on-off of the solenoid valve is controlled by the equipped electronic control system. The function of adding new oil can be integrated. Especially when used in the hydraulic station of large hydraulic devices, the same set of equipment corresponds to two sets of pipeline systems. After adding new oil, the pipeline system can give full play to the maximum capacity of the pump;

[0021] 2. The two sets of pipeline systems are controlled by solenoid valves, and the flow and temperature of the purification pipeline are controlled by flow solenoid valves, thereby meeting the temperature control requirements and ensuring that the filtered oil can be at the optimal working temperature;

[0022] 3. Add emptying procedures and corresponding hardware to make it more convenient to replace the filter element. There is no need to disassemble the pipeline, and the oil will not spill and pollute the environment;

[0023] 4. By installing this integrated electronic control system in the control cabinet, after simple integration, the equipment investment is small, the floor space is small, the total investment is reduced, it is more intelligent, and has great practical significance for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a first perspective stereoscopic schematic diagram of the present invention;

[0025] Figure 2 is a second perspective stereoscopic schematic diagram of the present invention;

[0026] Figure 3 It is a top view of the present invention.

[0027] Among them: 101, oil filter cart; 1, purification liquid inlet; 2, purification liquid outlet; 3, new oil inlet; 4, new oil outlet; 100, precision filter; 200, primary filter; 300, air-cooled radiator; 400, control cabinet; 500, oil pump; 30, first purification pipeline; 31, first new oil pipeline; 32, second purification pipeline; 33, second new oil pipeline; 34, first solenoid valve; 35, second solenoid valve; 36, flow solenoid valve; 90, drain pipeline; 1001, pressure sensor. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention will be described below in conjunction with the accompanying drawings.

[0029] like Figure 1 , Figure 2 and Figure 3 In the illustrated embodiment, a dual-pipe system temperature-controlled oil filter includes an oil filter cart 101 having a hollow structure, wherein an oil purification system and an oil refueling system are arranged inside the oil filter cart 101; asynchronous action is realized by designing a corresponding control program to match the dual-pipe system, thereby realizing an efficient refueling function, ensuring that the pipeline system after adding new oil can exert the maximum capacity of the pump.

[0030] The oil purification system comprises a purification liquid inlet 1 and a purification liquid outlet 2 which are staggeredly arranged on one side of the inside of the oil filter trolley 101, and a primary filter 200, a precision filter 100, an oil pump 500, and an air-cooled radiator 300 which are arranged inside the oil filter trolley 101. The purification liquid inlet 1 is connected to the inlet of the precision filter 100 through a first purification pipeline 30, the outlet of the precision filter 100 is connected to the inlet of the primary filter 200, the outlet of the primary filter 200 is connected to the inlet of the oil pump 500 through a flow solenoid valve 36, the outlet of the oil pump 500 is connected to the inlet of the air-cooled radiator 300 through a second purification pipeline 32, and the outlet of the air-cooled radiator 300 is connected to the purification liquid outlet 2 to form a purification system; wherein, the pressure sensor 1001 interface uses a pipeline to be electrically connected to the electronic control system, and is used to monitor the pressure in the precision filter 100. When the set pressure value is reached, the equipment automatically shuts down and sends out an audible and visual alarm to prompt the operator.

[0031] The oil refueling system includes a new oil inlet 3 and a new oil outlet 4 which are staggered on one side of the purified liquid inlet 1. The new oil inlet 3 is connected to the inlet of the oil pump 500 through a first new oil pipeline 31, and the outlet of the oil pump 500 is connected to the new oil outlet 4 through a second new oil pipeline 33, thereby meeting the requirements for fast and efficient addition of oil products.

[0032] like Figure 1 , Figure 2 and Figure 3In the illustrated embodiment, the first purification pipeline 30 and the first new oil pipeline 31 are connected and disconnected by being integrated in the first solenoid valve 34, and the second purification pipeline 32 and the second new oil pipeline 33 are connected and disconnected by being integrated in the second solenoid valve 35. The first solenoid valve 34 and the second solenoid valve 35 are electrically connected to the electronic control system.

[0033] like Figure 1 , Figure 2 and Figure 3 In the illustrated embodiment, an emptying pipeline 90 is also included, and the emptying pipeline 90 is connected and arranged in the first solenoid valve 34. The emptying action is: the first solenoid valve 34 on the emptying pipeline 90 is opened, and the emptying pipeline 90 is connected to the first purification pipeline 30 at this time, but all other passages of the second solenoid valve 35 are closed, that is, the first solenoid valve 34 and the purification liquid inlet 1 and the new oil inlet 3 are ensured to be in a closed state, and the air can pass through the emptying pipeline 90 and then through the first purification pipeline 30 into the primary filter 200, through the flow solenoid valve 36, the oil pump 500, and the precision filter 100, thereby achieving the purpose of emptying the oil in the precision filter 100.

[0034] like Figure 1 , Figure 2 and Figure 3 In the illustrated embodiment, a pressure sensor 1001 is installed on the outer periphery of the precision filter 100 .

[0035] like Figure 1 , Figure 2 and Figure 3 In the illustrated embodiment, a control cabinet 400 is embedded in the handrail of the oil filter cart 101, and an electric control system is arranged in the control cabinet 400. The electric control system includes a purification program for controlling the oil purification system, a filling program for controlling the oil filling system, and an emptying program for controlling the emptying action.

[0036] like Figure 1 , Figure 2 and Figure 3 In the illustrated embodiment, when the electronic control system is driven to work, asynchronous control is performed on the purification program and the addition program, that is, the two cannot be performed synchronously.

[0037] like Figure 1 , Figure 2 and Figure 3 In the illustrated embodiment, the pressure sensor 1001 is electrically connected to the electronic control system.

[0038] A temperature and flow rate control method for a dual-pipe system temperature-controlled oil filter, wherein the oil temperature and flow rate in the oil purification system of the oil filter are expressed by the formula:

[0039] J=(K·V·S)·γ C1 ·C

[0040] Control is performed, where: C is the heat capacity of the oil, K is the density of the oil, V is the flow rate of the oil, S is the process time for the oil to stabilize, C1 is the temperature of the oil during the process time S, γ C1 is the correlation coefficient of the oil temperature C1, J is the heat exchange of the radiator, C2 and C3 are the preset high-efficiency oil temperature ranges, and when C1 is within [C2, C3], γ C1 =1; when C1>C3, γ C1 >1, and γ C1 The value of is a certain value, such as a certain value between 1.0-1.2, preferably 1.1, that is, when the oil temperature is higher than C3, the electronic control system controls the flow solenoid valve to reduce the oil flow rate V to increase the residence time of the oil in the radiator, increase heat dissipation, and make C1 return to the interval [C2, C3]; when C1<C2, γ C1 <1, and γ C1 The value of is a certain value, such as a certain value between 0.8-1.0, preferably 0.8, that is, when the oil temperature is lower than C2, the electronic control system controls the flow solenoid valve to increase the oil flow rate V to reduce the residence time of the oil in the radiator, reduce heat dissipation, and cause C1 to return to the [C2, C3] interval.

[0041] In order to ensure the optimal operating performance of large hydraulic devices, hydraulic stations and other devices, the optimal oil temperature of the purified hydraulic oil entering the internal parts is 40-45°C. Therefore, in this embodiment, the high-efficiency oil temperature interval preset interval [C2, C3] = [40, 45], that is, the control temperature of the oil after purification by the oil filter is 40°C to 45°C. The temperature of this control method is obtained by the temperature sensors installed on the inner walls of the first purification pipeline 31 and the second purification pipeline 32 to obtain temperature feedback, and the electronic control system performs variable control on the oil flow rate through the flow solenoid valve according to the temperature feedback; since the heat exchange capacity of the selected radiator is constant, that is, J is a constant; the density V and heat capacity C of the oil are also constants; when the built-in electronic control system performs variable control on the flow rate V in the pipeline through the above control method, it can realize the electronic control function of automatically reducing the flow rate and accelerating the heat dissipation when the oil temperature exceeds the preset high-efficiency oil temperature interval.

[0042] The working principle of the present invention is:

[0043] Two sets of pipeline systems are controlled by the electronic control system through the first solenoid valve 34 and the second solenoid valve 35, corresponding to the purification and addition programs. Only one of the programs can be started. When the purification program is started, the addition program cannot be started, and the corresponding addition pipeline system, i.e., the new oil pipeline, is in a closed state, and vice versa.

[0044] Based on the temperature and flow rate control method provided by the present invention, the electronic control system controls the flow rate of the flow solenoid valve 36 to achieve the purpose of temperature control, meet the demand for temperature control of the oil purification system, and enable it to work under optimal temperature conditions.

[0045] Adding the emptying procedure and corresponding hardware makes it more convenient to replace the filter element. There is no need to disassemble the pipeline, and the oil will not spill or pollute the environment. By installing this integrated electronic control system in the control cabinet 400, after simple integration, the equipment investment is small, the floor space is small, the total investment is reduced, and it is more intelligent, which has great practical significance for promotion.

[0046] The above description is an explanation of the present invention, not a limitation of the present invention. The scope of the present invention is defined in the claims. Any form of modification may be made within the scope of protection of the present invention.

Claims

1. A temperature-controlled oil filter with a dual-pipe system, comprising an oil filter trolley (101) with a hollow structure, characterized in that: The oil filter cart (101) is provided with an oil purification system and an oil refueling system inside; An oil purification system comprising a purification liquid inlet (1) and a purification liquid outlet (2) arranged in a staggered manner on one side of an oil filter trolley (101), and a primary filter (200), a precision filter (100), an oil pump (500), and an air-cooled radiator (300) arranged inside the oil filter trolley (101), wherein the purification liquid inlet (1) is connected to the inlet of the precision filter (100) through a first purification pipeline (30), the outlet of the precision filter (100) is connected to the inlet of the primary filter (200), the outlet of the primary filter (200) is connected to the inlet of the oil pump (500) through a flow solenoid valve (36), the outlet of the oil pump (500) is connected to the inlet of the air-cooled radiator (300) through a second purification pipeline (32), and the outlet of the air-cooled radiator (300) is connected to the purification liquid outlet (2) to form a purification system; The oil refueling system comprises a new oil inlet (3) and a new oil outlet (4) arranged in a staggered manner on one side of the purified liquid inlet (1), the new oil inlet (3) being connected to an inlet of an oil pump (500) via a first new oil pipeline (31), and the outlet of the oil pump (500) being connected to the new oil outlet (4) via a second new oil pipeline (33); The first purification pipeline (30) and the first new oil pipeline (31) are integrated in a first solenoid valve (34) to realize pipeline connection and disconnection, and the second purification pipeline (32) and the second new oil pipeline (33) are integrated in a second solenoid valve (35) to realize pipeline connection and disconnection; The invention also includes an exhaust pipeline (90), wherein the exhaust pipeline (90) is connected to and arranged in the first solenoid valve (34). When the first solenoid valve (34) is opened, the exhaust pipeline (90) is connected to the first purification pipeline (30), and all other passages of the second solenoid valve (35) are closed. Air passes through the exhaust pipeline (90) and then through the first purification pipeline (30) to enter the primary filter (200), pass through the flow solenoid valve (36), the oil pump (500), and the precision filter (100) in sequence, and the oil in the precision filter (100) is exhausted.

2. A dual-pipe system temperature-controlled oil filter according to claim 1, characterized in that: It also includes an exhaust pipeline (90), wherein the exhaust pipeline (90) is arranged in communication with the first solenoid valve (34).

3. A dual-pipe system temperature-controlled oil filter as claimed in claim 2, characterized in that: A pressure sensor (1001) is installed on the outer periphery of the precision filter (100).

4. A dual-pipe system temperature-controlled oil filter as claimed in claim 3, characterized in that: A control cabinet (400) is embedded in the handrail of the oil filter trolley (101), and an electric control system is arranged in the control cabinet (400). The electric control system includes a purification program for controlling an oil purification system, a refilling program for controlling an oil refilling system, and an emptying program for controlling an emptying action.

5. A dual-pipe system temperature-controlled oil filter as claimed in claim 4, characterized in that: When the electronic control system is driven to work, asynchronous control is performed on the oil purification program and the oil addition program, and the two cannot be performed synchronously.

6. A dual-pipe system temperature-controlled oil filter as claimed in claim 5, characterized in that: The pressure sensor (1001) is electrically connected to the electronic control system.

7. A method for controlling temperature and flow rate of a temperature-controlled oil filter with a dual-pipe system as claimed in any one of claims 1 to 6, characterized in that: The oil temperature and flow rate of the oil filter are expressed by the formula: J=(K·V·S)·γ C1 ·C Control is performed, where: C is the heat capacity of the oil, K is the density of the oil, V is the flow rate of the oil, S is the process time for the oil to stabilize, C1 is the temperature of the oil during the process time S, γ C1 is the correlation coefficient of the oil temperature C1, J is the heat exchange of the radiator, C2 and C3 are the preset high-efficiency oil temperature ranges, and when C1 is within [C2, C3], γ C1 =1; when C1>C3, γ C1 >1, that is, when the oil temperature is higher than C3, the electronic control system controls the flow solenoid valve to reduce the oil flow rate V to increase the residence time of the oil in the radiator, increase heat dissipation, and make C1 return to the [C2, C3] interval; when C1 < C2, γ C1 <1, that is, when the oil temperature is lower than C2, the electronic control system controls the flow solenoid valve to increase the oil flow rate V to reduce the residence time of the oil in the radiator, reduce heat dissipation, and make C1 return to the [C2, C3] interval.

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