Suction filter assembly
By designing the isolation plate in the suction filter assembly to absorb oil independently, and using a filter material composed of a stacked filter layer and a stainless steel filter mesh, the problem of insufficient structural strength and mutual influence of mechanical pumps and electronic pumps under high-pressure usage conditions is solved, and higher filter material stability and filtration effect are achieved.
Patent Information
- Application Number
- CN202421537288.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-02
AI Technical Summary
Under high-pressure operating conditions, the suction filter assembly needs to provide greater structural strength, while reducing the mutual influence between the mechanical pump and the electronic pump to ensure the normal operation of the hydraulic system.
A suction filter assembly is designed, by providing a spacer plate on the upper cover, the first oil outlet and the second oil outlet are isolated in the first chamber and the second chamber respectively, and oil is absorbed independently, thereby reducing the mutual influence between the mechanical pump and the electronic pump. At the same time, the filter material is composed of a stacked filter layer and a stainless steel filter mesh injection molded in the plastic skeleton to enhance the structural strength and stability of the filter material.
Through the design of the isolation plate, independent oil absorption is reduced, the mutual influence between the mechanical pump and the electronic pump is improved, the stability and filtration effect of the filter material are improved, and the structural strength needs are met under high-pressure operating conditions.
Smart Images
Figure CN222752656U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a suction filter, in particular to a suction filter assembly. Background Art
[0002] The suction filter assembly is an important part of the hydraulic system of the dual-clutch transmission. The oil in the hydraulic system will produce impurities during movement. The oil containing impurities needs to be filtered through the suction filter assembly. The impurities in the hydraulic oil must be filtered out to ensure the normal operation of the hydraulic system. In order to avoid the problem that the oil suction time is too long when the electronic pump oil is repeatedly started and stopped, resulting in large power loss and longer response time of the transmission, another oil outlet is set on the suction filter assembly and a mechanical pump is set in the oil outlet. In order to prevent the hydraulic oil in the oil outlet where the electronic pump is located from being sucked back and eliminate the mutual influence between the mechanical pump and the electronic pump, a one-way valve is set at the electronic pump. However, under some high-pressure operating conditions, the filter material needs to have a greater structural strength, and the mutual influence between the mechanical pump and the electronic pump needs to be further reduced. Utility Model Content
[0003] In view of the needs in the prior art, the utility model provides a suction filter assembly, the purpose of which is to further reduce the mutual influence between the mechanical pump and the electronic pump and to provide the structural strength of the filter material.
[0004] A suction filter assembly comprises an upper cover and a lower cover butted against each other and a filter material isolated between the upper cover and the lower cover, a clean liquid cavity is formed between the upper cover and the filter material, a mixed liquid cavity is formed between the lower cover and the filter material, a first oil outlet and a second oil outlet both connected to the clean liquid cavity are provided on the upper cover, a one-way valve is provided in the first oil outlet, an oil inlet connected to the mixed liquid cavity is provided on the lower cover, an isolation plate is integrally provided on the inner wall of the upper cover, the lower side edge of the isolation plate abuts against the middle of the filter material, the isolation plate divides the clean liquid cavity into a first chamber and a second chamber, the first oil outlet is connected to the first chamber, and the second oil outlet is connected to the second chamber.
[0005] Further, the first oil outlet and the second oil outlet are both located on the left side of the upper cover and arranged in parallel front and back, one end of the isolation plate is located between the first oil outlet and the second oil outlet, and the other end of the isolation plate extends to the right side of the upper cover.
[0006] Further: the oil inlet is located on the right side of the lower cover and corresponds to the first chamber up and down, the right end of the isolation plate is bent toward the rear side of the upper cover to form a bending portion, the bending portion is connected to the rear inner wall of the upper cover, the oil inlet corresponds to the bending portion, and the second oil outlet and the oil inlet are respectively located on the left and right sides of the bending portion.
[0007] Furthermore, the filter material includes filter layers stacked in sequence from bottom to top and a stainless steel filter screen injection-molded in a plastic frame.
[0008] Further: the filter layer includes a first filter layer and a second filter layer stacked in sequence from bottom to top, through holes are distributed on the first filter layer and the second filter layer, the diameter of the through holes on the first filter layer is larger than the diameter of the through holes on the second filter layer, and the first filter layer and the second filter layer are made of the same material; the filtering accuracy of the stainless steel filter is smaller than the filtering accuracy of the filter layer and larger than the filtering accuracy of the through holes on the second filter layer.
[0009] Furthermore, the through holes on the second filter layer correspond to the through holes on the first filter layer in vertical direction.
[0010] Furthermore, the material of the filter layer is PET filter material.
[0011] Furthermore, the filtering accuracy of the stainless steel filter is greater than or equal to 50 μm.
[0012] Furthermore, the height of the clean liquid cavity gradually increases from the right side to the left side.
[0013] Furthermore, two magnets are fixedly arranged in the middle of the outer bottom surface of the lower cover, and the two magnets correspond to the first cavity and the second cavity respectively.
[0014] The beneficial effects of the utility model are as follows: the first oil outlet and the second oil outlet are respectively isolated in the first chamber and the second chamber by the isolation plate, so that the first oil outlet and the second oil outlet can absorb oil independently, thereby avoiding mutual influence between the mechanical pump and the electronic pump; the stability of the filter material is improved by supporting the middle part of the filter material through the isolation plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is an exploded view of the utility model. DETAILED DESCRIPTION
[0016] The utility model is described in detail below in conjunction with the accompanying drawings. The embodiments of the utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be interpreted as limiting the utility model. The directional terms such as left, middle, right, top, and bottom in the embodiments of the utility model are only relative concepts or are based on the normal use state of the product, and should not be considered as restrictive.
[0017] A suction filter assembly, such as Figure 1As shown, it includes an upper cover 1 and a lower cover 5 that are butt-jointed with each other, and a filter material 4 that is isolated between the upper cover 1 and the lower cover 5. A clean liquid cavity is formed between the upper cover 1 and the filter material 4, and the height of the clean liquid cavity gradually increases from the right side to the left side thereof. A mixed liquid cavity is formed between the lower cover 1 and the filter material 4. A first oil outlet 11 and a second oil outlet 12 that are both connected to the clean liquid cavity are provided on the upper cover 1. The first oil outlet 11 and the second oil outlet 12 are both located on the left side of the upper cover 1 and are arranged in parallel front and back. A one-way valve 2 is provided, the first oil outlet 11 is used to communicate with the electronic pump, the second oil outlet 12 is used to communicate with the mechanical pump, an oil inlet 51 connected to the mixed liquid chamber is provided on the lower cover 1, and an isolation plate 2 is integrally provided on the inner wall of the upper cover 1, one end of the isolation plate 2 is located between the first oil outlet 11 and the second oil outlet 12, and the other end of the isolation plate 2 extends to the right side of the upper cover 1, and the lower side of the isolation plate 2 abuts against the middle of the filter material 4, and the isolation plate 2 divides the clean liquid chamber into the first and second oil outlets 11 and 12. A chamber and a second chamber, the first oil outlet 11 is connected to the first chamber, and the second oil outlet 12 is connected to the second chamber; the support of the isolation plate 2 improves the stability of the filter material 4 and weakens the effect of the negative pressure in the second chamber on the first chamber; in order to balance the oil inlet amount of the first chamber and the second chamber and reduce the influence of the position of the oil inlet 51 on the first chamber and the second chamber, the oil inlet 51 is located on the right side of the lower cover 5 and corresponds to the upper and lower sides of the first chamber, and the right end of the isolation plate 2 is turned upward to cover The rear side of 1 is bent to form a bent portion 21, the bent portion 21 is connected to the rear inner wall of the upper cover 1, the left end of the isolation plate 2 is connected to the left inner wall of the upper cover 1, the oil inlet 51 corresponds to the bent portion 21, and the second oil outlet 12 and the oil inlet 51 are respectively located on the left and right sides of the bent portion 21; when the oil in the first chamber or the second chamber flows, the bent portion 21 has a certain obstruction effect, so that the oil in the oil inlet 51 is easier to diffuse to the left side of the mixing chamber, thereby improving the filtering effect of the filter material 4.
[0018] Among them, in order to improve the structural strength of the filter material 4 itself, the filter material 4 includes filter layers stacked from bottom to top and a stainless steel filter screen 41 injection-molded in a plastic skeleton 42, and the filtering accuracy of the stainless steel filter screen 41 is greater than or equal to 50μm; in order to balance the filtering efficiency and the oil suction pressure, the filter layer includes a first filter layer 44 and a second filter layer 43 stacked from bottom to top, the first filter layer 44 and the second filter layer 43 are made of the same material and are both PET filter materials, and through holes 45 are distributed on the first filter layer 44 and the second filter layer 43, the diameter of the through holes 45 on the first filter layer 44 is greater than the diameter of the through holes 45 on the second filter layer 43, and the through holes 45 on the second filter layer 43 correspond to the through holes 45 on the first filter layer 44 up and down, reducing the oil suction pressure; the filtering accuracy of the stainless steel filter screen 41 is less than the filtering accuracy of the filter layer and greater than the filtering accuracy of the through holes on the second filter layer 43, and the stainless steel mesh performs secondary filtration on impurities passing through the through holes.
[0019] In addition, two magnets 6 are fixedly arranged in the middle of the outer bottom surface of the lower cover 5 for absorbing magnetic impurities at the bottom of the transmission and in the mixing chamber. The two magnets 6 correspond to the first chamber and the second chamber respectively.
[0020] During operation, the first oil outlet 11 is connected to the electronic pump, the second oil outlet 12 is connected to the mechanical pump, the mechanical pump is turned off, and after the electronic pump is started, the oil enters the mixing chamber through the liquid inlet 51, and then enters the first chamber after being filtered by the filter material 4, and then reaches the electronic pump through the one-way valve 3; after the electronic pump is turned off and the mechanical pump is started, the oil in the mixing chamber enters the second chamber after being filtered by the filter material 4, and then reaches the mechanical pump.
[0021] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A suction filter assembly, comprising an upper cover and a lower cover butted against each other and a filter material isolated between the upper cover and the lower cover, a clean liquid cavity is formed between the upper cover and the filter material, a mixed liquid cavity is formed between the lower cover and the filter material, a first oil outlet and a second oil outlet both connected to the clean liquid cavity are provided on the upper cover, a one-way valve is provided in the first oil outlet, and an oil inlet connected to the mixed liquid cavity is provided on the lower cover, characterized in that: An isolation plate is integrally arranged on the inner wall of the upper cover, the lower side of the isolation plate abuts against the middle of the filter material, the isolation plate divides the clean liquid cavity into a first chamber and a second chamber, the first oil outlet is connected to the first chamber, and the second oil outlet is connected to the second chamber.
2. The suction filter assembly according to claim 1, characterized in that: The first oil outlet and the second oil outlet are both located on the left side of the upper cover and arranged in parallel front and back. One end of the isolation plate is located between the first oil outlet and the second oil outlet, and the other end of the isolation plate extends to the right side of the upper cover.
3. The suction filter assembly according to claim 2, characterized in that: The oil inlet is located on the right side of the lower cover and corresponds to the first chamber up and down. The right end of the isolation plate is bent toward the rear side of the upper cover to form a bending portion. The bending portion is connected to the rear inner wall of the upper cover. The oil inlet corresponds to the bending portion, and the second oil outlet and the oil inlet are respectively located on the left and right sides of the bending portion.
4. The suction filter assembly according to claim 1, characterized in that: The filter material comprises filter layers which are stacked in sequence from bottom to top and a stainless steel filter screen which is injection-molded in a plastic frame.
5. The suction filter assembly according to claim 4, characterized in that: The filter layer includes a first filter layer and a second filter layer which are stacked in sequence from bottom to top. Through holes are distributed on the first filter layer and the second filter layer. The diameter of the through holes on the first filter layer is larger than the diameter of the through holes on the second filter layer. The first filter layer and the second filter layer are made of the same material. The filtering accuracy of the stainless steel filter is smaller than the filtering accuracy of the filter layer and larger than the filtering accuracy of the through holes on the second filter layer.
6. The suction filter assembly according to claim 5, characterized in that: The through holes on the second filter layer correspond vertically to the through holes on the first filter layer.
7. The suction filter assembly according to claim 5, characterized in that: The filter layer is made of PET filter material.
8. The suction filter assembly according to claim 5, characterized in that: The filtration accuracy of the stainless steel filter is greater than or equal to 50μm.
9. The suction filter assembly according to claim 1, characterized in that: The height of the clean liquid chamber gradually increases from the right side to the left side thereof.
10. The suction filter assembly according to claim 1, characterized in that: Two magnets are fixedly arranged in the middle of the outer bottom surface of the lower cover, and the two magnets correspond to the first cavity and the second cavity respectively.