A high-efficiency hydraulic cylinder hydraulic oil circulating and purifying device

Abstract

This utility model discloses a high-efficiency hydraulic oil circulation and purification device for oil cylinders, including a base plate. A filter assembly is installed on the top of the base plate. The filter assembly includes two filter chambers fixedly connected to the outer wall of the top of the base plate, and the two filter chambers are arranged side by side. A branch pipe 1 is fixedly connected to one side of the outer wall of each of the two filter chambers, and a branch pipe 2 is fixedly connected to the other side of the outer wall of each of the two filter chambers. The same electromagnetic three-way valve is fixedly connected to the two branches pipe 1 and the two branches 2 at their closest ends. An oil outlet pipe and an oil return pipe are fixedly connected to the installation ports of the two electromagnetic three-way valves, respectively. An oil pump is fixedly connected to the middle of the oil outlet pipe. The oil pump is fixedly connected to the outer wall of the top of the base plate. By setting up the filter assembly, this utility model can automatically switch the filter structure without stopping the machine, thereby ensuring that the hydraulic oil of the device can be continuously filtered, which is beneficial to ensuring the cleanliness of the hydraulic oil.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic oil filtration technology, specifically to a high-efficiency hydraulic oil circulation and purification device for oil cylinders. Background Technology

[0002] Hydraulic oil is the "blood" of a hydraulic cylinder system, playing multiple crucial roles within the system. It is not only the working medium for transmitting energy, but also converts mechanical energy into hydraulic energy via a hydraulic pump, and then back into mechanical energy via the cylinder, enabling various mechanical actions such as lifting, extending, and rotating equipment.

[0003] A search revealed a utility model patent with Chinese patent publication number CN215654206U, which discloses a circulating purification device for hydraulic oil. The device includes an oil tank and a delivery pipe and a return pipe mounted on the tank. A water pump is installed on the delivery pipe, and an electrostatic purification mechanism for purifying dirty oil inside the oil tank is provided between the delivery pipe and the return pipe. In this circulating purification device for hydraulic oil, during the circulation purification process of the hydraulic oil inside the tank, after the hydraulic oil flows out from the U-shaped box, smaller impurity particles with opposite charges on the first and second flow chambers attract each other and clump together.

[0004] The above-mentioned device filters impurities through a filter screen. As the usage time increases, the impurities accumulate to a certain level, and the machine needs to be stopped for replacement. It cannot achieve continuous operation. Furthermore, the impurities that were initially attracted together by charge may disperse again due to the conductivity of the hydraulic oil itself, external pressure fluctuations, or vibrations. There is room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency hydraulic oil circulation and purification device for oil cylinders, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-efficiency hydraulic oil circulation and purification device for oil cylinders, comprising a base plate, a filter assembly installed on the top of the base plate, the filter assembly comprising two filter chambers fixedly connected to the outer wall of the top of the base plate, the two filter chambers being arranged side by side, a branch pipe 1 fixedly connected to one side of the outer wall of each of the two filter chambers, a branch pipe 2 fixedly connected to the other side of the outer wall of each of the two filter chambers, the same electromagnetic three-way valve fixedly connected to the ends of the two branch pipes 1 and the two branch pipes 2 that are close to each other, an oil outlet pipe and an oil return pipe fixedly connected to the installation ports of the two electromagnetic three-way valves respectively, an oil pump fixedly connected to the middle position of the oil outlet pipe, the oil pump being fixedly connected to the outer wall of the top of the base plate, and a filter structure installed inside each of the two filter chambers, the filter structure comprising three vertical plates and three support cylinders.

[0007] The system can automatically switch the filter structure without shutting down the machine, ensuring continuous filtration of the hydraulic oil and maintaining its cleanliness. As usage time increases, excessive impurities accumulate in the filter elements inside one of the filter chambers. The PLC controller controls two solenoid three-way valves to switch positions. The channel connecting one branch pipe to the filter chamber is closed, while the channel connecting the other branch pipe to the filter chamber is opened. At this time, the hydraulic oil will enter the other branch pipe and flow through the other filter chamber, where the filter elements can continue to be used. Furthermore, the previously used branch pipes one and two will be closed to facilitate filter replacement.

[0008] As a further preferred embodiment of this technical solution, an oil tank is fixedly connected to the top of the base plate, and one end of the top of the oil outlet pipe is fixedly connected to the oil inlet of the oil tank.

[0009] As a further preferred embodiment of this technical solution, two disassembly and assembly components are installed on the top outer wall of the base plate, and the two disassembly and assembly components respectively surround the outside of the two filter chambers.

[0010] As a further preferred embodiment of this technical solution, the disassembly and assembly assembly includes a support frame fixedly connected to one side of the top outer wall of the base plate, a movable plate slidably sleeved on the upper half of the support frame, and a vertically arranged sealing frame fixedly connected to the bottom outer wall of the movable plate, the sealing frame being positioned directly opposite the filter chamber.

[0011] As a further preferred embodiment of this technical solution, a vertically arranged lead screw is rotatably connected inside the support frame. The lead screw is threaded to the outside of the moving plate. A motor is fixedly connected to the top outer wall of the support frame, and the output end of the motor is coaxially fixed with one end of the top of the lead screw.

[0012] Start the motor at the top of the support frame. The motor controls the lead screw to rotate, which drives the moving plate to move upward along the support frame. The moving plate drives the sealing frame and the vertical plate to move synchronously. The filter screen installed in the support cylinder inside the vertical plate can be directly replaced. After the work is completed, drive the sealing frame to press against the top of the filter chamber, which helps to improve the airtightness of both. The disassembly and assembly process is convenient and quick.

[0013] As a further preferred embodiment of this technical solution, the oil tank is fixedly fitted with an installation sleeve, and several electric heating tubes are installed inside the installation sleeve. An electronic thermometer is fixedly installed on the top outer wall of the oil tank, and the probe of the electronic thermometer extends into the oil tank. A PLC controller is fixedly installed on the outer wall of one end of the oil tank. The PLC controller is electrically connected to the electronic thermometer, the electric heating tubes, the oil pump, and two electromagnetic three-way valves through wires.

[0014] As a further preferred embodiment of this technical solution, all three vertical plates are fixedly connected to the bottom outer wall of the sealing frame, and slots adapted to the three vertical plates are provided inside. The three support cylinders are respectively fixedly connected to the outer wall of one side of the three vertical plates. Each of the three support cylinders has a filter sleeve inside, and the filter holes of the three filter sleeves decrease sequentially, with the filter sleeve closest to the oil tank having the largest filter holes.

[0015] This utility model provides a high-efficiency hydraulic oil circulation and purification device for oil cylinders, which has the following beneficial effects: (1) By setting up a filter assembly, this utility model can automatically switch the filter structure without stopping the machine, thereby ensuring that the hydraulic oil of the device can be continuously filtered, which is beneficial to ensuring the cleanliness of the hydraulic oil. As the usage time increases, too much impurity accumulates in the filter element inside one of the filter chambers. The PLC controller controls the two electromagnetic three-way valves to switch positions. The channel that originally connected one branch pipe and the filter chamber is closed, while the channel that connected another branch pipe and the filter chamber is opened. At this time, the hydraulic oil will enter another branch pipe and branch pipe two and flow through another filter chamber, and the filter element therein can continue to be used. In addition, the original branch pipes one and two will also be closed, which facilitates the replacement of the filter element.

[0016] (2) By setting up the disassembly and assembly components, the motor at the top of the support frame is started, the motor controls the lead screw to rotate, the lead screw drives the moving plate to move upward along the support frame, the moving plate drives the sealing frame and the vertical plate to move synchronously, the filter screen installed in the support cylinder inside the vertical plate can be directly replaced, after the work is completed, the sealing frame is driven to press against the top of the filter chamber, which is conducive to improving the airtightness of the two, and the disassembly and assembly process is convenient and quick. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 This is an enlarged structural diagram of the disassembly and assembly components of this utility model; Figure 4 This is a partially enlarged structural diagram of the filter assembly of this utility model; In the diagram: 1. Base plate; 2. Oil tank; 3. Mounting sleeve; 4. Electronic thermometer; 5. PLC controller; 6. Filter assembly; 7. Assembly / disassembly assembly; 601. Oil outlet pipe; 602. Branch pipe one; 603. Filter chamber; 604. Branch pipe two; 605. Oil return pipe; 607. Oil pump; 608. Solenoid three-way valve; 609. Vertical plate; 610. Support cylinder; 701. Support frame; 702. Moving plate; 703. Lead screw; 704. Motor; 705. Sealing frame. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figure 2 , Figure 3 As shown in Figure 4, in this embodiment, a high-efficiency hydraulic cylinder oil circulation and purification device includes a base plate 1. A filter assembly 6 is installed on the top of the base plate 1. The filter assembly 6 includes two filter chambers 603 fixedly connected to the outer wall of the top of the base plate 1, and the two filter chambers 603 are arranged side by side. A branch pipe 602 is fixedly connected to one side of the outer wall of each of the two filter chambers 603, and a branch pipe 604 is fixedly connected to the other side of the outer wall of each of the two filter chambers 603. The same electromagnetic three-way valve 608 is fixedly connected to the end of the two branch pipes 602 and the two branch pipes 604 that are close to each other. An oil outlet pipe 601 and an oil return pipe 605 are fixedly connected to the installation ports of the two electromagnetic three-way valves 608, respectively. An oil pump 607 is fixedly connected to the middle position of the oil outlet pipe 601. The oil pump 607 is fixedly connected to the outer wall of the top of the base plate 1. A filter structure is installed inside each of the two filter chambers 603. The filter structure includes three vertical plates 609 and three support cylinders 610.

[0020] When the oil pump 607 on the top of the base plate 1 is started, the hydraulic oil inside the oil tank 2 is pumped into one of the branch pipes 602, and then into the filter chamber 603 connected to the branch pipe 602 for filtration. Then, it enters the return oil pipe 605 through the branch pipe 604 connected to the filter chamber 603, and then returns to the oil tank 2 through the return oil pipe 605 for circulation. As the usage time increases, too much impurity accumulates in the filter element inside one of the filter chambers 603. The PLC controller 5 controls the two solenoid three-way valves 608 to switch positions. The channel that originally connected one branch pipe 602 and the filter chamber 603 is closed, while the channel that connected the other branch pipe 602 and the filter chamber 603 is opened. At this time, the hydraulic oil will enter the other branch pipe 602 and the branch pipe 604 and flow through the other filter chamber 603, and the filter element there can continue to be used. In addition, the branch pipes 602 and the branch pipe 604 that were originally in use will also be closed to facilitate the replacement of the filter element.

[0021] like Figure 1 As shown in Figure 2, an oil tank 2 is fixedly connected to the top of the base plate 1, and one end of the oil outlet pipe 601 is fixedly connected to the oil inlet of the oil tank 2.

[0022] like Figure 2 and Figure 3 As shown, two disassembly and assembly components 7 are installed on the top outer wall of the base plate 1, and the two disassembly and assembly components 7 respectively surround the outside of the two filter chambers 603.

[0023] The assembly 7 includes a support frame 701 fixedly connected to one side of the top outer wall of the base plate 1. The upper half of the support frame 701 is slidably fitted with a movable plate 702. The bottom outer wall of the movable plate 702 is fixedly connected with a vertically arranged sealing frame 705, which is positioned directly opposite the filter chamber 603.

[0024] The support frame 701 is rotatably connected to a vertically arranged lead screw 703, which is threaded to the outside of the moving plate 702. A motor 704 is fixedly connected to the top outer wall of the support frame 701, and the output end of the motor 704 is coaxially fixed with one end of the top of the lead screw 703.

[0025] The replacement process is as follows: start the motor 704 at the top of the support frame 701. The motor 704 controls the lead screw 703 to rotate. The lead screw 703 drives the moving plate 702 to move upward along the support frame 701. The moving plate 702 drives the sealing frame 705 and the vertical plate 609 to move synchronously. The filter screen installed in the support cylinder 610 inside the vertical plate 609 can be directly replaced. After the work is completed, drive the sealing frame 705 to press against the top of the filter chamber 603, which helps to improve the airtightness of both. The disassembly and assembly process is convenient and quick.

[0026] like Figure 1 As shown in Figure 2, an installation sleeve 3 is fixedly fitted on the outside of the oil tank 2. Several electric heating tubes are installed inside the installation sleeve 3. An electronic thermometer 4 is fixedly installed on the top outer wall of the oil tank 2. The probe of the electronic thermometer 4 extends into the inside of the oil tank 2. A PLC controller 5 (using Siemens S7-1200 series) is fixedly installed on the outer wall of one end of the oil tank 2. The PLC controller 5 is electrically connected to the electronic thermometer 4, the electric heating tubes, the oil pump 607 and two electromagnetic three-way valves 608 through wires.

[0027] The electric heating element inside the mounting sleeve 3 is activated by the PLC controller 5, which heats the hydraulic oil inside the oil tank 2. The electronic thermometer 4 monitors the temperature of the hydraulic oil. When the electronic thermometer 4 detects that the hydraulic oil temperature reaches 55 degrees Celsius, it transmits the signal to the PLC controller 5. The PLC controller 5 then controls the electric heating element to stop working. When the temperature drops below 50 degrees Celsius, the electric heating element is activated again to maintain the hydraulic oil temperature between 50 and 55 degrees Celsius. The increased temperature reduces the viscosity of the hydraulic oil, reduces the frictional resistance between impurity particles and the oil, and may also damage the adsorption layer on the surface of the impurity particles, making them easier to aggregate and settle, without compromising the performance of the hydraulic oil.

[0028] like Figure 3 and Figure 4As shown, the three vertical plates 609 are all fixedly connected to the bottom outer wall of the sealing frame 705. The slots that fit the three vertical plates 609 are opened inside the 603. The three support cylinders 610 are fixedly connected to the outer wall of one side of the three vertical plates 609 respectively. Each of the three support cylinders 610 has a filter sleeve inside, which helps to increase the filtration area. The filter holes of the three filter sleeves decrease in sequence, and the filter holes of the filter sleeve closest to the oil tank 2 are the largest. The hydraulic oil passes through the three filter sleeves in sequence for multi-stage filtration.

[0029] This utility model provides a high-efficiency hydraulic oil circulation and purification device for oil cylinders, the specific working principle of which is as follows: When the device is working, the electric heating tube inside the mounting sleeve 3 is activated by the PLC controller 5, which heats the hydraulic oil inside the oil tank 2. The electronic thermometer 4 monitors the temperature of the hydraulic oil. When the electronic thermometer 4 detects that the hydraulic oil temperature reaches 55 degrees Celsius, it transmits the signal to the PLC controller 5. The PLC controller 5 then controls the electric heating tube to stop working. When the temperature drops below 50 degrees Celsius, it controls the electric heating tube to heat up again, so that the hydraulic oil temperature is maintained between 50 and 55 degrees Celsius. The increase in temperature will reduce the viscosity of the hydraulic oil, reduce the frictional resistance between impurity particles and the oil, and may also destroy the adsorption layer on the surface of impurity particles, making them easier to aggregate and settle, without damaging the performance of the hydraulic oil.

[0030] When the oil pump 607 on the top of the base plate 1 is started, the hydraulic oil inside the oil tank 2 is pumped into one of the branch pipes 602, and then into the filter chamber 603 connected to the branch pipe 602 for filtration. Then, it enters the return oil pipe 605 through the branch pipe 604 connected to the filter chamber 603, and then returns to the oil tank 2 through the return oil pipe 605 for circulation. As the usage time increases, too much impurity accumulates in the filter element inside one of the filter chambers 603. The PLC controller 5 controls the two solenoid three-way valves 608 to switch positions. The channel that originally connected one branch pipe 602 and the filter chamber 603 is closed, while the channel that connected the other branch pipe 602 and the filter chamber 603 is opened. At this time, the hydraulic oil will enter the other branch pipe 602 and the branch pipe 604 and flow through the other filter chamber 603, and the filter element there can continue to be used. In addition, the branch pipes 602 and the branch pipe 604 that were originally in use will also be closed to facilitate the replacement of the filter element.

[0031] The replacement process is as follows: start the motor 704 at the top of the support frame 701. The motor 704 controls the lead screw 703 to rotate. The lead screw 703 drives the moving plate 702 to move upward along the support frame 701. The moving plate 702 drives the sealing frame 705 and the vertical plate 609 to move synchronously. The filter screen installed in the support cylinder 610 inside the vertical plate 609 can be directly replaced. After the work is completed, drive the sealing frame 705 to press against the top of the filter chamber 603, which helps to improve the airtightness of both. The disassembly and assembly process is convenient and quick.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency hydraulic oil circulation and purification device for oil cylinders, comprising a base plate (1), characterized in that: A filter assembly (6) is installed on the top of the base plate (1). The filter assembly (6) includes two filter chambers (603) fixedly connected to the outer wall of the top of the base plate (1). The two filter chambers (603) are arranged side by side. A branch pipe (602) is fixedly connected to one side of the outer wall of each of the two filter chambers (603), and a branch pipe (604) is fixedly connected to the other side of the outer wall of each of the two filter chambers (603). The two branch pipes (602) and the two branch pipes (604) are close to each other. The same electromagnetic three-way valve (608) is fixedly connected to one end of the two electromagnetic three-way valves (608). The oil outlet pipe (601) and the oil return pipe (605) are fixedly connected to the two installation ports respectively. An oil pump (607) is fixedly connected to the middle position of the oil outlet pipe (601). The oil pump (607) is fixedly connected to the top outer wall of the bottom plate (1). A filter structure is installed inside the two filter chambers (603). The filter structure includes three vertical plates (609) and three support cylinders (610).

2. The high-efficiency hydraulic oil circulation and purification device for cylinders according to claim 1, characterized in that: An oil tank (2) is fixedly connected to the top of the base plate (1), and one end of the top of the oil outlet pipe (601) is fixedly connected to the oil inlet of the oil tank (2).

3. The high-efficiency hydraulic oil circulation and purification device for cylinders according to claim 1, characterized in that: Two disassembly and assembly components (7) are installed on the top outer wall of the base plate (1), and the two disassembly and assembly components (7) respectively surround the outside of the two filter chambers (603).

4. The high-efficiency hydraulic oil circulation and purification device for cylinders according to claim 3, characterized in that: The disassembly and assembly assembly (7) includes a support frame (701) fixedly connected to one side of the top outer wall of the base plate (1). The upper half of the support frame (701) is slidably fitted with a movable plate (702). The bottom outer wall of the movable plate (702) is fixedly connected with a vertically arranged sealing frame (705). The sealing frame (705) is positioned directly opposite the filter chamber (603).

5. The high-efficiency hydraulic oil circulation and purification device for cylinders according to claim 4, characterized in that: The support frame (701) is rotatably connected to a vertically arranged lead screw (703), which is threaded to the outside of the moving plate (702). A motor (704) is fixedly connected to the top outer wall of the support frame (701), and the output end of the motor (704) is coaxially fixed with one end of the top of the lead screw (703).

6. The high-efficiency hydraulic oil circulation and purification device for cylinders according to claim 2, characterized in that: The oil tank (2) is fixedly fitted with an installation sleeve (3), and several electric heating tubes are installed inside the installation sleeve (3). An electronic thermometer (4) is fixedly installed on the top outer wall of the oil tank (2), and the probe of the electronic thermometer (4) extends into the oil tank (2). A PLC controller (5) is fixedly installed on the outer wall of one end of the oil tank (2). The PLC controller (5) is electrically connected to the electronic thermometer (4), the electric heating tubes, the oil pump (607), and two electromagnetic three-way valves (608) through wires.

7. The high-efficiency hydraulic oil circulation and purification device for cylinders according to claim 1, characterized in that: The three vertical plates (609) are fixedly connected to the bottom outer wall of the sealing frame (705). The (603) has slots inside that are adapted to the three vertical plates (609). The three support cylinders (610) are fixedly connected to the outer wall of one side of the three vertical plates (609). Each of the three support cylinders (610) has a filter sleeve inside. The filter holes of the three filter sleeves decrease in sequence, and the filter hole of the filter sleeve closest to the oil tank (2) is the largest.

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