Double-loop defoaming type return oil filter

Abstract

The invention discloses a double-loop defoaming type oil return filter, and relates to the technical field of oil return filters, the double-loop defoaming type oil return filter comprises a treatment tank, a third channel pipe and a fourth channel pipe, the third channel pipe and the fourth channel pipe are communicated with one side of the treatment tank, and ports of the third channel pipe and the fourth channel pipe are jointly communicated with a double-loop oil inlet pipe; the first channel pipe and the second channel pipe are arranged on the other side of the treatment tank. When the piston module telescopically moves, the third channel pipe, the fourth channel pipe, the second channel pipe and the first channel pipe are switched and opened under the action of the first one-way valve plate, and the circulation paths of the double-loop oil inlet pipe and the double-loop oil outlet pipe are correspondingly switched; meanwhile, the working states of the filtering assemblies in the third channel pipe, the fourth channel pipe, the second channel pipe and the first channel pipe are switched, so that the efficient filtering process is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of oil return filters, and particularly to a double-circuit defoaming oil return filter. Background Art

[0002] The defoaming oil return filter is a composite filtering device in a hydraulic system that combines the functions of filtering contaminants and eliminating bubbles in the oil. Its core objective is to separate gases (such as air and dissolved oxygen) and solid contaminants in the oil through physical or chemical means, thereby solving system problems caused by foam (gas-liquid mixture), such as noise, vibration, cavitation, pressure fluctuations, etc., while maintaining the cleanliness of the oil.

[0003] Existing oil return filters generally use single-channel filtration interception. First, the single channel will increase the burden on the filter element and affect the filtration efficiency. Second, the filter element is prone to clogging over time, resulting in a decrease in filtration efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a double-circuit defoaming oil return filter. When the piston module expands and contracts, with the cooperation of the first one-way valve plate, the switching and opening of the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe are realized, corresponding to switching the flow paths of the double-circuit oil inlet pipe and the double-circuit oil outlet pipe, and at the same time switching the working states of the filter components in the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe, thereby realizing an efficient filtration process.

[0005] To achieve the above object, the present invention provides the following technical solution: A double-circuit defoaming oil return filter, comprising: a processing tank, a third channel pipe and a fourth channel pipe connected to one side of the processing tank, the ports of the third channel pipe and the fourth channel pipe are jointly connected to a double-circuit oil inlet pipe; a first channel pipe and a second channel pipe provided on the other side of the processing tank, the ports of the first channel pipe and the second channel pipe are jointly connected to a double-circuit oil outlet pipe, and first one-way valve plates and filter components are provided inside the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe; a piston module that can expand and contract is provided in the middle of the processing tank. When the piston module reciprocates and expands and contracts, it is used to switch the flow paths of the double-circuit oil inlet pipe and the double-circuit oil outlet pipe, and further switch the working states of the filter components in the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe.

[0006] Preferably, the double-loop oil inlet pipe includes an oil inlet main pipe, and a three-way valve connected to the top of the oil inlet main pipe. The three-way valve is respectively connected to a fourth shunt pipe and a third shunt pipe on both sides. The fourth shunt pipe and the third shunt pipe are respectively connected to a third channel pipe and a fourth channel pipe at corresponding ends; the double-loop oil outlet pipe includes an oil drain pipe and a connecting pipe connected to the oil drain pipe. The connecting pipe is sequentially extended and connected with a first shunt pipe and a second shunt pipe. The first shunt pipe and the second shunt pipe are respectively connected to a first channel pipe and a second channel pipe at corresponding ends.

[0007] Preferably, the filter assembly includes a first stepped mounting portion. The first stepped mounting portion divides the corresponding third channel pipe, fourth channel pipe, second channel pipe, and first channel pipe into a first cavity and a second cavity. A filter element is arranged in the first cavity, and rubber elastic rings are arranged between the upper and lower surfaces of the filter element and the inner top and bottom of the first cavity; the first one-way valve plate is arranged outside the filter element and placed in the second cavity. The first one-way valve plate includes a second stepped mounting portion and a third valve plate that can be opened and closed on the side of the second stepped mounting portion away from the filter element.

[0008] Preferably, the bottoms of the third channel pipe and the fourth channel pipe are both connected with a detachable dirt collection box, which is used to collect the dirt generated by the backwashing of the filter assembly.

[0009] Preferably, the piston module includes a piston body and through holes that penetrate the piston body and are arranged in a circular array. The ends of the piston body close to the second channel pipe and the fourth channel pipe are provided with openable and closable through holes, and the ends away from the second channel pipe and the fourth channel pipe are provided with an openable and closable first valve plate. And multiple anti-foaming layers are fixed inside the piston body; a transmission pipe is fixed at the end of the piston body close to the through holes. One end of the transmission pipe extends into the piston body and is respectively provided with a first solenoid valve and a second solenoid valve. The first solenoid valve and the second solenoid valve are respectively arranged on the front and rear sides of the anti-foaming layer. The other end of the transmission pipe extends reversely to the outside of the treatment tank and is connected to a negative pressure fan module, and a transmission displacement assembly is arranged at the end of the treatment tank close to the negative pressure fan module, which is used to drive the piston module where the first valve plate is located to reciprocate and telescopic move.

[0010] Preferably, the transmission displacement assembly includes a mounting frame and a sliding rod arranged on the mounting frame. A horizontally slidable rod sleeve is installed on the first solenoid valve, and the negative pressure fan module is fixed on the rod sleeve. Two rotatable transmission wheels are assembled in the mounting frame, and a transmission belt is connected between the two transmission wheels. The transmission belt is fixedly connected to the bottom of the negative pressure fan module, and a motor is assembled on the outer wall of the mounting frame. The output shaft of the motor extends into the mounting frame and is connected to one of the transmission wheels.

[0011] Preferably, two contact switches are provided on one of the sliding rods, which are used to respectively control the on-off of the first solenoid valve and the second solenoid valve, and the distance between the two contact switches is equal to the moving stroke of the piston module.

[0012] Preferably, a detachable end sleeve is provided at the end of the treatment tank away from the mounting frame. Through the detachable assembly of the end sleeve, it is convenient to clean the inside of the treatment tank or replace the piston module.

[0013] Preferably, a dynamic heat dissipation pipeline is also provided on the treatment tank, which is used for efficient heat dissipation of the oil return of the fourth shunt pipe and the third shunt pipe; the dynamic heat dissipation pipeline includes a piston sleeve, which is assembled on the treatment tank, and a telescopically moving piston plate is slidably installed therein. The piston plate divides the piston sleeve into a first piston chamber and a second piston chamber. A piston rod is fixed on the piston plate, and one end of the piston rod extends to the outside of the piston sleeve and is fixedly connected with the negative pressure fan module through a connecting piece, and a first conduit and a second conduit respectively communicating with the first piston chamber and the second piston chamber. The second cooling ring pipe and the first cooling ring pipe are respectively wound on the fourth shunt pipe and the third shunt pipe.

[0014] Preferably, the dynamic heat dissipation pipeline further includes two groups of refrigeration modules. Each group of refrigeration modules includes a refrigerator and a return coiled pipe arranged inside the refrigerator. One end of one of the return coiled pipes is communicated with the end of the first conduit away from the piston sleeve, and the other end of the return coiled pipe is communicated with the second cooling ring pipe. One end of the other return coiled pipe is communicated with the end of the second conduit away from the piston sleeve, and the other end thereof is communicated with the first cooling ring pipe.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. In the present invention, first one-way valve plates and filter components are provided inside the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe. The piston module divides the treatment tank into two front and rear cavities. When the piston module expands and contracts, with the cooperation of the first one-way valve plate, the channels of the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe are switched on, corresponding to switching the flow paths of the double-loop oil inlet pipe and the double-loop oil outlet pipe, and at the same time switching the working states of the filter components inside the third channel pipe, the fourth channel pipe, the second channel pipe, and the first channel pipe, thereby realizing an efficient filtering process.

[0017] 2. As other embodiments of the present invention, by further optimizing the structure of the piston module, the bubbles in the oil return liquid are enriched at the internal position of the piston body and the defoaming action is completed by passing through multiple defoaming layers. The second valve plate located at the rear side of the piston body is opened, and the first valve plate on the other side is closed, so that the oil return liquid in the front cavity can be cut off from the defoaming area of the piston body. When the piston body is pushed forward, the defoamed oil return liquid in the front cavity can be discharged through the first channel pipe. At the same time, the second solenoid valve on the transmission pipe switches to work to form a negative pressure area. By repeating this cycle, the bubbles in the oil return liquid can be efficiently removed, effectively reducing the negative impact of the bubbles.

[0018] 3. By further providing a dynamic heat dissipation pipeline, when the piston module moves to switch the flow path, the corresponding control of the coolant reflux follows in real time dynamically, and by repeating this cycle, an efficient heat dissipation process is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0020] Figure 2 is Figure 1 the second perspective three-dimensional structure schematic diagram of

[0021] Figure 3 is Figure 1 the third perspective three-dimensional structure schematic diagram of

[0022] Figure 4 is Figure 1 the front view structure schematic diagram of

[0023] Figure 5 is Figure 1 the top view structure schematic diagram of

[0024] Figure 6 is Figure 4 the A-A cross-sectional structure schematic diagram of

[0025] Figure 7 is Figure 4 the B-B cross-sectional structure schematic diagram of

[0026] Figure 8 is Figure 7 the three-dimensional structure schematic diagram of

[0027] Figure 9 is the internal structure cross-sectional structure schematic diagram of the treatment tank of the present invention;

[0028] Figure 10 is the enlarged structure schematic diagram at D of the present invention;

[0029] Figure 11 is a partial perspective enlarged structure schematic diagram of a dynamic heat dissipation pipeline of the present invention;

[0030] Figure 12 This is another enlarged partial perspective structure schematic diagram of the dynamic heat dissipation pipeline of the present invention;

[0031] Figure 13 This is a schematic diagram of the wire frame structure of the piston sleeve of the present invention;

[0032] Figure 14 This is a schematic diagram of the internal structure of the piston module of the present invention.

[0033] In the figure: 111, treatment tank; 113, end sleeve;

[0034] 211, piston sleeve; 2111, piston rod; 2112, piston plate; 2113, connecting piece; 212, first cooling loop pipe; 213, refrigerator; 214, first conduit; 215, second conduit; 216, second cooling loop pipe;

[0035] 311, first channel pipe; 312, first shunt pipe; 313, connecting pipe; 3131, second shunt pipe; 314, oil drain pipe; 315, second channel pipe;

[0036] 412, transmission pipe; 413, first solenoid valve; 414, second solenoid valve; 415, defoaming layer; 420, piston body; 421, first valve plate; 423, through hole; 424, second valve plate; 430, installation frame; 431, slide bar; 432, rod sleeve; 433, negative pressure fan module; 434, motor; 435, transmission belt; 436, transmission wheel;

[0037] 511, main oil inlet pipe; 512, three-way valve; 513, third shunt pipe; 514, third channel pipe; 515, fourth shunt pipe; 516, fourth channel pipe; 520, filter element; 521, rubber elastic ring; 522, first stepped installation part; 523, second stepped installation part; 524, third valve plate;

[0038] 811, contact switch;

[0039] 911, sewage collection box. Detailed implementation manners

[0040] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. The following will introduce each embodiment of the present invention in detail with reference to the drawings.

[0041] Example 1

[0042] Please refer to Figures 1 to 14 The present invention preferably provides a technical solution: a double-loop defoaming oil return filter, comprising: a treatment tank 111, a third channel pipe 514 and a fourth channel pipe 516 connected to one side of the treatment tank 111, and a double-loop oil inlet pipe is commonly connected to the ports of the third channel pipe 514 and the fourth channel pipe 516; a first channel pipe 311 and a second channel pipe 315 provided on the other side of the treatment tank 111, and a double-loop oil outlet pipe is commonly connected to the ports of the first channel pipe 311 and the second channel pipe 315, and a first one-way valve plate and a filtering component are arranged inside the third channel pipe 514, the fourth channel pipe 516, the second channel pipe 315 and the first channel pipe 311; a piston module that can be telescopically moved is arranged in the middle of the treatment tank 111, and when the piston module reciprocates telescopically, it is used to switch the flow paths of the double-loop oil inlet pipe and the double-loop oil outlet pipe, and further switch the working states of the filtering components in the third channel pipe 514, the fourth channel pipe 516, the second channel pipe 315 and the first channel pipe 311.

[0043] Further, the double-loop oil inlet pipe includes an oil inlet main pipe 511, and a three-way valve 512 connected to the top of the oil inlet main pipe 511. The three-way valve 512 is respectively connected to a fourth shunt pipe 515 and a third shunt pipe 513 on both sides. The fourth shunt pipe 515 and the third shunt pipe 513 are respectively connected to the third channel pipe 514 and the fourth channel pipe 516 at the corresponding ends; the double-loop oil outlet pipe includes a drain pipe 314, and a connecting pipe 313 connected to the drain pipe 314. A first shunt pipe 312 and a second shunt pipe 3131 are sequentially extended and connected to the connecting pipe 313. The first shunt pipe 312 and the second shunt pipe 3131 are respectively connected to the first channel pipe 311 and the second channel pipe 315 at the corresponding ends.

[0044] In this application, a double-loop defoaming oil return filter is provided. Four channel openings formed by the double-loop oil inlet pipe and the double-loop oil outlet pipe on the left and right sides of the treatment tank 111 correspond to the third channel pipe 514, the fourth channel pipe 516, the second channel pipe 315, and the first channel pipe 311, as Figure 1 、 6As shown in Figures 9 and 9, the first one-way valve plate and the filter assembly are arranged inside the third channel tube 514, the fourth channel tube 516, the second channel tube 315 and the first channel tube 311. The filter assembly is located near the processing tank 111. The piston module divides the processing tank 111 into two cavities in the front and rear. When the piston module moves in a telescopic manner, the first one-way valve plate is cooperated to realize the switching and opening of the channels of the third channel tube 514, the fourth channel tube 516, the second channel tube 315 and the first channel tube 311, correspondingly switching the flow paths of the double-circuit oil inlet pipe and the double-circuit oil outlet pipe, and at the same time switching the working states of the filter assembly in the third channel tube 514, the fourth channel tube 516, the second channel tube 315 and the first channel tube 311;

[0045] Specifically, Figure 1 , 6 As shown in Figures 9 and 9, when the piston module moves toward the second channel tube 315 and the fourth channel tube 516, the first one-way valve plates in the third channel tube 514 and the second channel tube 315 are opened, the channel where the third channel tube 514 is located is connected and the filter assembly therein completes the oil inlet filtering action and at the same time realizes the conduction of the channel where the second channel tube 315 is located to realize the oil discharge filtering action, and the corresponding flow path: the oil inlet main pipe 511 flows to the fourth diverter pipe 515 and enters the third channel tube 514, an oil inlet filtering path corresponding to the second channel tube 315, the second diverter pipe 3131 and the oil discharge filtering path of the oil discharge pipe 314, and the first one-way valve plates in the corresponding fourth channel tube 516 and the first channel tube 311 are closed, and the filter assembly therein performs a backwashing action;

[0046] When the piston module moves away from the second channel tube 315 and the fourth channel tube 516, the first one-way valve plates in the fourth channel tube 516 and the first channel tube 311 are opened to realize the oil inlet filtering action of the filter component in the fourth channel tube 516 and the oil discharge filtering action in the first channel tube 311 at the same time, and the corresponding flow paths: the oil inlet main pipe 511 flows to the third branch pipe 513 and enters another oil inlet filtering path of the fourth channel tube 516, and corresponds to another oil discharge filtering path from the first channel tube 311 and the first branch pipe 312 to the oil discharge pipe 314, and at the same time, the first one-way valve plates in the third channel tube 514 and the second channel tube 315 are closed, and the filter components therein perform backwashing action.

[0047] Example 2

[0048] As another embodiment of the present invention, the filter assembly includes a first stepped mounting portion 522. The first stepped mounting portion 522 divides the corresponding third channel pipe 514, fourth channel pipe 516, second channel pipe 315, and first channel pipe 311 into a first cavity and a second cavity. A filter element 520 is disposed in the first cavity, and rubber elastic rings 521 are provided between the upper and lower surfaces of the filter element 520 and the top and bottom of the first cavity. The first one-way valve plate is disposed outside the filter element 520 and in the second cavity. The first one-way valve plate includes a second stepped mounting portion 523 and a third valve plate 524 that is openable and closable on the side of the second stepped mounting portion 523 away from the filter element 520.

[0049] Furthermore, a detachable dirt collection box 911 is connected to the bottoms of the third channel pipe 514 and the fourth channel pipe 516. The dirt collection box 911 is used to collect the dirt generated during the backwashing of the filter assembly.

[0050] In this embodiment, through the further provided filter assembly, in Embodiment 1, as Figure 6 , 9 , as shown in 10, when the piston module expands and contracts, negative pressures can be formed in the two front and rear cavities respectively, and open and close under the action of the first one-way valve plate, thereby switching the connection states of the third channel pipe 514, fourth channel pipe 516, second channel pipe 315, and first channel pipe 311. Through the structural setting of the filter assembly, it is composed of the filter element 520 and the rubber elastic ring 521. For example, when the piston module moves in the direction close to the second channel pipe 315 and the fourth channel pipe 516, the first one-way valve plate where the third channel pipe 514 is located opens and is connected. The oil return liquid can enter from the double-circuit oil inlet pipe, pass through the filter element 520 in the third channel pipe 514 for filtration, and then enter the front cavity formed in the treatment tank 111, realizing oil inlet filtration. The third valve plate 524 corresponding to the first channel pipe 311 on the other side is placed behind the second stepped mounting portion 523 and is in a closed state. The filter assembly at the corresponding position is in the process of oil liquid backwashing. Similarly, the first one-way valve plate where the fourth channel pipe 516 is located is in a closed state, and the filter assembly at the corresponding position is in the process of oil liquid backwashing. The first one-way valve plate inside is in an open and connected state, and the filter assembly inside can perform secondary filtration and discharge.

[0051] Combined with as Figure 3As shown, by further providing a detachable dirt collection box 911, for the filter components where the third channel pipe 514 and the fourth channel pipe 516 are located, when each performs backwashing, the corresponding first one-way valve plates are in a closed state. The dirt generated by backwashing can be in the second cavity and converge in the dirt collection box 911 for collection. The filter components in the second channel pipe 315 and the first channel pipe 311 are equivalent to secondary filtration during the discharge process, with less clogging. The slightly dirt generated by their backwashing can flow back into the treatment tank 111 and can be discharged through later disassembly and cleaning.

[0052] Embodiment 3

[0053] As another embodiment of the present invention, the piston module includes a piston body 420 and through holes 423 that penetrate the piston body 420 and are arranged in a circular array. An openable and closable through hole 423 is provided at the end of the piston body 420 close to the second channel pipe 315 and the fourth channel pipe 516. An openable and closable first valve plate 421 is provided at the end away from the second channel pipe 315 and the fourth channel pipe 516. A multi-layer defoaming layer 415 is fixed inside the piston body 420. A transmission pipe 412 is fixed at the end of the piston body 420 close to the through hole 423. One end of the transmission pipe 412 extends into the piston body 420 and is respectively provided with a first solenoid valve 413 and a second solenoid valve 414. The first solenoid valve 413 and the second solenoid valve 414 are respectively placed on the front and rear sides of the defoaming layer 415. The other end of the transmission pipe 412 extends reversely outside the treatment tank 111 and is connected to a negative pressure fan module 433, and a transmission displacement assembly is provided at the end of the treatment tank 111 close to the negative pressure fan module 433 for driving the piston module where the first valve plate 421 is located to reciprocate and telescopically move.

[0054] In this embodiment, on the basis of Embodiment 1, by further optimizing the structure of the piston module, such as Figure 6 、 7As shown in FIGS. 8, 9 and 14, when the piston body 420 moves towards the second channel pipe 315 and the fourth channel pipe 516, a negative pressure is formed in the cavity where the front part of the treatment tank 111 is located. Under the action of the first one-way valve plate, the third channel pipe 514 is communicated, the corresponding first channel pipe 311 is closed, the first valve plate 421 on the front side of the corresponding piston body 420 is opened, and the through hole 423 on the other side is closed. At the same time, the first solenoid valve 413 in the area where the transmission pipe 412 is located works to form a negative pressure area. The bubbles in the oil return liquid are concentrated towards the inner position of the piston body 420 and the defoaming action is completed by passing through the multi-layer defoaming layer 415. When the piston body 420 moves away from the second channel pipe 315 and the fourth channel pipe 516, a negative pressure is formed in the cavity where the rear part of the treatment tank 111 is located. Under the action of the first one-way valve plate, the fourth channel pipe 516 is communicated for the oil return liquid to enter. The corresponding second channel pipe 315 is closed, the second valve plate 424 on the rear side of the corresponding piston body 420 is opened, and the first valve plate 421 on the other side is closed. The oil return liquid in the front cavity can be separated from the defoaming area of the piston body 420. When the piston body 420 moves forward, the defoamed oil return liquid in the front cavity can be discharged through the first channel pipe 311. At the same time, the second solenoid valve 414 on the transmission pipe 412 switches to work to form a negative pressure area, so that the oil return liquid in the cavity formed at the rear side enters the piston body 420 from the position of the second valve plate 424 and the defoaming action is carried out by the multi-layer defoaming layer 415. By repeating this cycle, the bubbles in the oil return liquid can be efficiently removed, effectively reducing the negative impact of the bubbles.

[0055] Further, the transmission displacement assembly includes a mounting frame 430 and a slide bar 431 provided on the mounting frame 430. A horizontally slidable rod sleeve 432 is mounted on the first solenoid valve 413, a negative pressure fan module 433 is fixed on the rod sleeve 432, two rotatable transmission wheels 436 are assembled in the mounting frame 430, a transmission belt 435 is drivingly connected between the two transmission wheels 436, the transmission belt 435 is fixedly connected to the bottom of the negative pressure fan module 433, and a motor 434 is assembled on the outer wall of the mounting frame 430. The output shaft of the motor 434 extends into the mounting frame 430 and is connected to one of the transmission wheels 436.

[0056] Through the further provided transmission displacement assembly, as Figure 1 、 2 、7 and 8 show, when the motor 434 is controlled to rotate back and forth, the transmission wheel 436 can be driven to rotate, thereby driving the transmission belt 435 to perform a linear reciprocating movement, further realizing the movement of the transmission pipe 412 where the negative pressure fan module 433 is located, and further driving the piston module to reciprocally expand and contract inside the treatment tank 111.

[0057] Further, two contact switches 811 are provided on one of the sliding rods 431 for respectively controlling the on / off of the first solenoid valve 413 and the second solenoid valve 414, and the distance between the two contact switches 811 is equal to the moving stroke of the piston module.

[0058] With the further provided two contact switches 811, as Figure 8 , 9 shown, in combination with the switching operation of the above-mentioned first solenoid valve 413 and the second solenoid valve 414, when the transmission pipe 412 moves away from the fourth channel pipe 516 and the second channel pipe 315, corresponding to the working state of the second solenoid valve 414, the oil return work of the rear cavity of the treatment tank 111 is carried out. When moving to the end of the stroke of the treatment tank 111 and running in the reverse direction, it contacts the front position contact switch 811, and the contact switch 811 is triggered to switch to the first solenoid valve 413 to work. At this time, the transmission pipe 412 is driven to move towards the fourth channel pipe 516 and the second channel pipe 315, and the oil return work of the front cavity of the treatment tank 111 is carried out. Similarly, when the treatment tank 111 moves in the reverse direction to the end of the stroke, the contact switch 811 at the rear position is triggered, and it is switched to the second solenoid valve 414 to work again. By cycling like this, an efficient defoaming process is achieved.

[0059] Further, a detachable end sleeve 113 is provided at the end of the treatment tank 111 away from the mounting frame 430. Through the detachable assembly of the end sleeve 113, it is convenient to clean the inside of the treatment tank 111 or replace the piston module.

[0060] Embodiment 4

[0061] As other embodiments of the present invention, a dynamic heat dissipation pipeline is further provided on the treatment tank 111 for efficiently dissipating heat from the oil return of the fourth shunt pipe 515 and the third shunt pipe 513; the dynamic heat dissipation pipeline includes a piston sleeve 211, which is assembled on the treatment tank 111, and a telescopically movable piston plate 2112 is slidably installed therein. The piston plate 2112 divides the piston sleeve 211 into a first piston chamber and a second piston chamber. A piston rod 2111 is fixed on the piston plate 2112. One end of the piston rod 2111 extends to the outside of the piston sleeve 211 and is fixedly connected to the negative pressure fan module 433 through a connecting member 2113, and a first conduit 214 and a second conduit 215 respectively communicating with the first piston chamber and the second piston chamber. The second cooling loop 216 and the first cooling loop 212 are respectively wound around the fourth shunt pipe 515 and the third shunt pipe 513; there are also two groups of refrigeration modules, and each group of refrigeration modules includes a refrigerator 213 and a return coiled pipe 2131 arranged inside the refrigerator 213. One end of one return coiled pipe 2131 communicates with the end of the first conduit 214 away from the piston sleeve 211, and the other end of the return coiled pipe 2131 communicates with the second cooling loop 216. One end of the other return coiled pipe 2131 communicates with the end of the second conduit 215 away from the piston sleeve 211, and the other end thereof communicates with the first cooling loop 212.

[0062] In this embodiment, through the further provided dynamic heat dissipation pipeline, and on the basis of Embodiment 3, in combination with the transmission displacement assembly, in combination Figure 1 、 5 As shown in 6, 11, 12, and 13, when the piston module moves toward the second channel pipe 315 and the fourth channel pipe 516, the corresponding flow path: an oil inlet filtration path in which the main oil inlet pipe 511 flows to the fourth shunt pipe 515 and enters the third channel pipe 514. At this time, the piston plate 2112 also moves toward the fourth channel pipe 516 inside the piston sleeve 211. The corresponding first piston chamber is squeezed, and the coolant flowing to the first conduit 214 is refrigerated by the refrigerator 213 and then flows back to the second cooling loop 216 to cool the oil return liquid of the fourth shunt pipe 515. The corresponding second piston chamber forms a negative pressure and sucks the refrigerator 213 through the second conduit 215, so that the coolant in the first cooling loop 212 flows back into the refrigerator 213 for self-cooling. Similarly, when the piston module moves in the opposite direction, the first cooling loop 212 cools the third shunt pipe 513, and the coolant in the other second cooling loop 216 flows back into the refrigerator 213 for self-cooling. In this way, by repeating this cycle, an efficient heat dissipation process can be achieved.

[0063] In the present invention, unless otherwise clearly specified or limited, the terms "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection; it may be directly connected, or indirectly connected through an intermediate medium. Among them, there are various ways of detachable installation. For example, it may be by means of cooperation between plugging and buckling, or by means of bolt connection, etc.

[0064] The specific description of the present invention in the above embodiments is only for further illustration of the present invention, and cannot be construed as a limitation on the protection scope of the present invention. Any non-essential improvements and adjustments made by those skilled in the art based on the content of the above invention fall within the protection scope of the present invention.

Claims

1. A double-loop defoaming oil return filter, characterized in that, Comprising: A processing tank (111), a third channel pipe (514) and a fourth channel pipe (516) connected to one side of the processing tank (111), and the ports of the third channel pipe (514) and the fourth channel pipe (516) are jointly connected to a double-loop oil inlet pipe; A first channel pipe (311) and a second channel pipe (315) provided on the other side of the processing tank (111), the ports of the first channel pipe (311) and the second channel pipe (315) are jointly connected to a double-loop oil outlet pipe, and a first one-way valve plate and a filtering component are arranged inside the third channel pipe (514), the fourth channel pipe (516), the second channel pipe (315) and the first channel pipe (311); A piston module that can be telescopically moved is arranged in the middle of the processing tank (111). When the piston module reciprocates telescopically, it is used to switch the flow paths of the double-loop oil inlet pipe and the double-loop oil outlet pipe, and further switch the working states of the filtering components in the third channel pipe (514), the fourth channel pipe (516), the second channel pipe (315) and the first channel pipe (311).

2. The double-loop defoaming oil return filter according to claim 1, wherein: The double-loop oil inlet pipe includes an oil inlet main pipe (511), and a three-way valve (512) connected to the top of the oil inlet main pipe (511). The three-way valve (512) is connected to a fourth shunt pipe (515) and a third shunt pipe (513) on both sides respectively. The fourth shunt pipe (515) and the third shunt pipe (513) are respectively connected to the third channel pipe (514) and the fourth channel pipe (516) at the corresponding ends; The double-loop oil outlet pipe includes an oil discharge pipe (314), and a connecting pipe (313) connected to the oil discharge pipe (314). A first shunt pipe (312) and a second shunt pipe (3131) are sequentially extended and connected to the connecting pipe (313). The first shunt pipe (312) and the second shunt pipe (3131) are respectively connected to the first channel pipe (311) and the second channel pipe (315) at the corresponding ends.

3. A double-loop defoaming oil return filter according to claim 1, characterized in that: The filtering component includes a first stepped mounting portion (522). The first stepped mounting portion (522) divides the corresponding third channel pipe (514), fourth channel pipe (516), second channel pipe (315) and first channel pipe (311) into a first cavity and a second cavity. A filter element (520) is arranged in the first cavity, and rubber elastic rings (521) are arranged between the upper and lower surfaces of the filter element (520) and the top and bottom inside the first cavity; The first one-way valve plate is arranged outside the filter element (520) and placed in the second cavity. The first one-way valve plate includes a second stepped mounting portion (523), and a third valve plate (524) that can be opened and closed is arranged on the side of the second stepped mounting portion (523) away from the filter element (520).

4. The double-loop defoaming oil return filter according to claim 1, wherein: Detachable dirt collection boxes (911) are connected to the bottoms of the third channel pipe (514) and the fourth channel pipe (516). The dirt collection boxes (911) are used to collect the dirt generated by the backwashing of the filtering components.

5. A double-loop defoaming oil return filter according to claim 1, characterized in that: The piston module includes a piston body (420), and through holes (423) that penetrate the piston body (420) and are arranged in an annular array. At the end of the piston body (420) close to the second channel pipe (315) and the fourth channel pipe (516), there are openable and closable through holes (423). At the end far from the second channel pipe (315) and the fourth channel pipe (516), there is an openable and closable first valve plate (421), and multiple anti-foaming layers (415) are fixed inside the piston body (420). A transmission pipe (412) is fixed at the end of the piston body (420) close to the through hole (423). One end of the transmission pipe (412) extends into the piston body (420) and is respectively provided with a first solenoid valve (413) and a second solenoid valve (414). The first solenoid valve (413) and the second solenoid valve (414) are respectively arranged in front of and behind the anti-foaming layer (415). The other end of the transmission pipe (412) extends reversely outside the treatment tank (111) and is communicated with a negative pressure fan module (433), and a transmission displacement assembly is arranged at the end of the treatment tank (111) close to the negative pressure fan module (433) for driving the piston module where the first valve plate (421) is located to reciprocate and stretch.

6. The double-loop defoaming oil return filter according to claim 5, wherein: The transmission displacement assembly includes an installation frame (430), and a slide bar (431) arranged on the installation frame (430). A horizontally slidable rod sleeve (432) is installed on the first solenoid valve (413). The negative pressure fan module (433) is fixed on the rod sleeve (432). Two rotatable transmission wheels (436) are assembled in the installation frame (430). A transmission belt (435) is connected between the two transmission wheels (436). The transmission belt (435) is fixedly connected to the bottom of the negative pressure fan module (433), and a motor (434) is assembled on the outer wall of the installation frame (430). The output shaft of the motor (434) extends into the installation frame (430) and is connected to one of the transmission wheels (436).

7. A double-loop defoaming oil return filter according to claim 6, characterized in that: Two contact switches (811) are arranged on one of the slide bars (431) for respectively controlling the on-off of the first solenoid valve (413) and the second solenoid valve (414), and the distance between the two contact switches (811) is equal to the moving stroke of the piston module.

8. A double-loop defoaming oil return filter according to claim 1, characterized in that: A detachable end sleeve (113) is arranged at the end of the treatment tank (111) far from the installation frame (430). Through the detachable assembly of the end sleeve (113), it is convenient to clean the inside of the treatment tank (111) or replace the piston module.

9. The dual-loop defoaming oil return filter according to claim 1, wherein: A dynamic heat dissipation pipeline is also arranged on the treatment tank (111) for efficiently dissipating heat from the oil returning of the fourth shunt pipe (515) and the third shunt pipe (513). The dynamic heat dissipation pipeline includes a piston sleeve (211), which is assembled on the processing tank (111). A telescopically movable piston plate (2112) is slidably installed therein. The piston plate (2112) divides the piston sleeve (211) into a first piston chamber and a second piston chamber. A piston rod (2111) is fixed on the piston plate (2112). One end of the piston rod (2111) extends to the outside of the piston sleeve (211) and is fixedly connected to the negative pressure fan module (433) through a connector (2113), and a first conduit (214) and a second conduit (215) respectively communicating with the first piston chamber and the second piston chamber. The second cooling loop pipe (216) and the first cooling loop pipe (212) are respectively wound on the fourth shunt pipe (515) and the third shunt pipe (513).

10. A double-loop defoaming oil return filter according to claim 9, characterized in that: The dynamic heat dissipation pipeline further includes two groups of refrigeration modules. Each group of refrigeration modules includes a refrigerator (213) and a return coiled pipe (2131) arranged inside the refrigerator (213). One end of one of the return coiled pipes (2131) communicates with the end of the first conduit (214) far from the piston sleeve (211), the other end of the return coiled pipe (2131) communicates with the second cooling loop pipe (216), one end of the other return coiled pipe (2131) communicates with the end of the second conduit (215) far from the piston sleeve (211), and its other end communicates with the first cooling loop pipe (212).

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