Filter pipe fitting for hydraulic pump and stable-flow hydraulic pump using same
By installing a rotating component and an open filter screen at the oil inlet of the hydraulic pump, solid impurities are filtered using the eddy current principle, thus solving the problem of unstable hydraulic pump flow and maximizing flow stability and throughput.
Patent Information
- Application Number
- CN202423272417.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing hydraulic pumps, the filter screen is clogged with solid particulate impurities, resulting in unstable flow and affecting the pump's performance.
A rotating component and an open filter screen are installed at the oil inlet of the hydraulic pump. The rotating component guides the hydraulic oil to form a vortex, which causes solid impurities to approach the inner wall under centrifugal force and be intercepted by the open filter screen, ensuring that impurity-free oil flows through the center and achieving stable flow.
It improves the flow stability of the hydraulic pump, maximizes the oil inlet throughput, and avoids flow fluctuations caused by filter clogging.
Smart Images
Figure CN223498129U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydraulic pumps, and in particular relates to a filter pipe fitting for a hydraulic pump and a hydraulic pump with stable flow using the same. Background Technology
[0002] A hydraulic pump is the power component of a hydraulic system. Driven by an engine or electric motor, it draws hydraulic fluid from a tank, pressurizes it, and discharges it to the actuators. Generally, to prevent wear from solid particles in the hydraulic oil on the internal components of the pump, a filter screen is installed at the pump's inlet to filter out solid particles.
[0003] However, solid particles and impurities can sometimes clog the filter screen, causing a decrease in flow rate. When the solid particles and impurities leave the filter screen, the flow rate will increase again. Moreover, since the filter screen covers the inner cross-section of the oil inlet, this phenomenon is particularly prominent and affects the flow stability of the hydraulic pump.
[0004] Therefore, how to avoid the hydraulic pump's flow rate becoming unstable when the filter screen covers the inner cross-section of the oil inlet is a technical problem that urgently needs to be solved in this field.
[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content
[0006] This disclosure provides at least one filter fitting for a hydraulic pump and a hydraulic pump with stable flow using the same.
[0007] In a first aspect, the present disclosure provides a hydraulic pump with stable flow rate, including: a hydraulic pump body, one end of which is provided with an oil inlet and the other end with an oil outlet;
[0008] The oil inlet is connected to a filter pipe.
[0009] The filter fitting includes:
[0010] A rotating component located in the front section of the oil flow and an open filter screen located in the rear section of the oil flow.
[0011] In one alternative embodiment, the open filter screen includes a mating ring and a mesh body;
[0012] The mating ring fits tightly against the inner wall of the filter pipe;
[0013] The mesh body connects to the entire ring of the mating ring to filter solid impurities.
[0014] In one alternative embodiment, the mesh protrudes in the direction of the rotating member, and a circular opening is provided at the center of the protrusion of the mesh.
[0015] In one optional embodiment, the rotating component includes a fixed column, a rotating part, and a driving part; wherein
[0016] The fixing column is connected to the inner wall of the filter pipe, and the length of the fixing column is greater than the inner radius of the filter pipe.
[0017] The rotating part is rotatably mounted on the fixed column, and the rotating part is coaxial with the filter pipe; and
[0018] The drive unit is located on the outer wall of the filter tube and is connected to the rotating unit in a transmission manner to drive the rotating unit to rotate.
[0019] In one optional embodiment, the rotating part includes a rotating shaft and a plurality of helical blades;
[0020] The rotating shaft is inserted into the fixing post; and
[0021] The spiral blades are arranged in a circumferential array on the rotating shaft to guide the oil body forward in a spiral motion after the rotating part rotates.
[0022] In one alternative embodiment, the distance L between the open filter screen and the rotating component is at least 50 cm, so that solid impurities undergo centrifugal action for a certain period of time and move closer to the inner wall of the filter tube.
[0023] Secondly, this disclosure also provides a filter fitting for a hydraulic pump, comprising: a filter fitting disposed at an oil inlet, and including a rotating part and an open filter screen;
[0024] The axis of the rotating component is aligned with the center of the central opening of the open filter screen, so that the oil flowing in forms a vortex after passing through the rotating component and then enters the oil inlet through the opening.
[0025] In one optional embodiment, the rotating component includes a fixed column, a rotating part, and a driving part; wherein
[0026] The fixing column is connected to the inner wall of the filter pipe, and the length of the fixing column is greater than the inner radius of the filter pipe.
[0027] The rotating part is rotatably mounted on the fixed column, and the rotating part is coaxial with the filter pipe; and
[0028] The drive unit is located on the outer wall of the filter pipe and is connected to the rotating unit to drive the rotating unit to rotate, thereby guiding the oil to form a vortex.
[0029] Thirdly, this disclosure also provides a hydraulic pump with stable flow rate, comprising: a hydraulic pump body, one end of which is provided with an oil inlet and the other end with an oil outlet; and
[0030] The filter fittings described above are installed at the oil inlet.
[0031] In one alternative embodiment, the open filter screen includes a mesh body that protrudes in the direction of rotation, with a circular opening formed at the protruding center of the mesh body.
[0032] The beneficial effect of this utility model is that by setting a rotating component and an open filter screen inside the filter pipe, the rotating component guides the fluid to form a vortex, thereby causing solid impurities to approach the inner wall of the filter pipe under centrifugal force and be intercepted by the open filter screen, while impurity-free oil flows through the center of the open filter screen, thereby improving the flow stability of the hydraulic pump.
[0033] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and drawings.
[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description
[0035] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0036] Figure 1 A perspective view of a hydraulic pump with stable flow rate provided in an embodiment of this disclosure;
[0037] Figure 2 A partially enlarged schematic diagram of a hydraulic pump with stable flow rate provided in an embodiment of this disclosure;
[0038] Figure 3 This is a schematic diagram of the distance L between an open filter screen and a rotating component provided in an embodiment of this disclosure.
[0039] In the picture:
[0040] 1. Hydraulic pump body;
[0041] 2. Oil inlet;
[0042] 3. Oil outlet;
[0043] 4. Filter fittings; 41. Rotating parts; 42. Open filter screen; 43. Matching ring; 44. Mesh body; 45. Round opening; 46. Fixed column; 47. Rotating part; 471. Rotating shaft; 472. Spiral blades; 48. Drive unit. Detailed Implementation
[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0045] Research has revealed that, in related technologies, the hydraulic pump is the power component of a hydraulic system. Driven by an engine or electric motor, it draws hydraulic fluid from a hydraulic tank, pressurizes it, and discharges it to the actuators. Generally, to prevent wear from solid particles and impurities in the hydraulic oil on the internal components of the pump, a filter screen is installed at the pump's inlet to filter out solid particles.
[0046] However, solid particles and impurities can sometimes clog the filter screen, causing a decrease in flow rate. When the solid particles and impurities leave the filter screen, the flow rate will increase again. Moreover, since the filter screen covers the inner cross-section of the oil inlet, this phenomenon is particularly prominent and affects the flow stability of the hydraulic pump.
[0047] Therefore, how to avoid the filter screen covering the inner cross section of the oil inlet, which would lead to unstable flow of the hydraulic pump, is a technical problem that urgently needs to be solved in this field.
[0048] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0049] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the figures, the thickness of parts may be exaggerated or reduced for the purpose of effectively depicting the technical content.
[0050] Based on the above research, in order to solve the aforementioned technical problems, referring to Figure 1 At least one embodiment provides a hydraulic pump with stable flow rate, including: a hydraulic pump body 1, one end of which is provided with an oil outlet 3 and the other end of which is provided with an oil inlet 2, the oil inlet 2 being connected to a filter pipe 4 to filter solid particulate impurities in the hydraulic oil.
[0051] Specifically, the filter pipe 4 includes a rotating part 41 located in the front section of the oil flow and an open filter screen 42 located in the rear section of the oil flow. After the hydraulic oil flows through the rotating part 41, it spirals forward and forms a vortex. Solid impurities approach the inner wall of the filter pipe 4 under centrifugal force. The open filter screen 42 filters the oil containing impurities, and the oil without impurities flows through the center of the open filter screen 42. This achieves the filtering of solid impurities in the oil while maximizing the oil inlet flow of the hydraulic pump body 1 and improving the flow stability of the hydraulic pump.
[0052] Reference Figure 2 In order to achieve the filtration effect of the open filter screen 42, in some embodiments, the open filter screen 42 includes a mating ring 43 and a mesh body 44. The mating ring 43 is tightly attached to the inner wall of the filter tube 4, and the mesh body 44 connects the entire ring of the mating ring 43. The mesh body 44 protrudes in the direction of the rotating member 41, and a circular opening 45 is provided at the center of the protrusion of the mesh body 44. When the oil in the filter tube 4 forms a vortex, the solid impurities in the oil will approach the inner wall of the filter tube 4 under the centrifugal force and be intercepted by the mesh body 44, so as to achieve the filtration effect of the open filter screen 42.
[0053] Furthermore, impurity-free oil flows through the central opening 45 of the mesh 44, maximizing the oil flow rate into the hydraulic pump body 1. It is also worth mentioning that the mesh 44 is convex towards the rotating component 41. Solid impurities intercepted by the mesh 44 are moved away from the opening 45 by the hydraulic oil impact, effectively preventing solid impurities from entering the hydraulic pump body 1 through the opening 45, thereby improving the filtration effect of the filter screen 42.
[0054] Reference Figure 2 In order to achieve the effect of the rotating component 41 guiding the hydraulic oil to form a vortex, in some embodiments, the rotating component 41 includes a fixed column 46, a rotating part 47 and a driving part 48. The fixed column 46 is connected to the inner wall of the filter tube 4 and the length of the fixed column 46 is greater than the inner radius of the filter tube 4. The rotating part 47 is rotatably mounted on the fixed column 46 and is coaxial with the filter tube 4. The driving part 48 is mounted on the outer wall of the filter tube 4 and is connected to the rotating part 47 in a transmission manner to drive the rotating part 47 to rotate.
[0055] Specifically, the rotating part 47 includes a rotating shaft 471 and a plurality of helical blades 472. The helical blades 472 are arranged in a circumferential array on the rotating shaft 471. The rotating shaft 471 is inserted into the fixed post 46 and is connected to the driving part 48. The driving part 48 is preferably a drive motor to drive the rotating shaft 471 to rotate, thereby guiding the hydraulic oil passing through the helical blades 472 to spiral forward and form a vortex to achieve the above-mentioned effect.
[0056] Reference Figure 3It should also be noted that in some embodiments, the distance L between the open filter screen 42 and the rotating member 41 is at least 50cm, so that the hydraulic oil forming the vortex flows through at least this distance, and the solid impurities in the oil also undergo centrifugal action for a certain period of time, and approach the inner wall of the filter tube 4, and are then intercepted by the open filter screen 42.
[0057] In addition, refer to Figure 2 At least one embodiment provides a filter fitting for a hydraulic pump, including: a filter fitting 4 disposed at the oil inlet 2 of the hydraulic pump, which includes a rotating part 41 and an open filter screen 42. The rotating part 41 includes a fixed post 46, a rotating part 47 and a driving part 48. The fixed post 46 is connected to the inner wall of the filter fitting 4, and the length of the fixed post 46 is greater than the inner radius of the filter fitting 4. The rotating part 47 is rotatably disposed on the fixed post 46 and is coaxial with the filter fitting 4. The driving part 48 is disposed on the outer wall of the filter fitting 4 and is connected to the rotating part 47 in a transmission manner to drive the rotating part 47 to rotate.
[0058] Specifically, the rotating part 47 includes a rotating shaft 471 and a plurality of spiral blades 472. The spiral blades 472 are arranged circumferentially around the rotating shaft 471. The rotating shaft 471 is inserted into the fixed post 46 and is connected to the driving part 48. The driving part 48 is preferably a drive motor to drive the rotating shaft 471 to rotate, thereby guiding the hydraulic oil passing through the spiral blades 472 to spiral forward and form a vortex. The open filter screen 42 includes a mating ring 43 and a mesh body 44. The mating ring 43 fits tightly against the inner wall of the filter tube 4. The mesh body 44 connects the entire ring of the mating ring 43 and protrudes towards the rotating part 41. A circular opening 45 is provided at the center of the protrusion of the mesh body 44. When the oil in the filter pipe 4 forms a vortex, the solid impurities in the oil will approach the inner wall of the filter pipe 4 under centrifugal force and be intercepted by the mesh 44. The impurity-free oil will flow through the circular opening 45 in the center of the mesh 44, which maximizes the oil flow of the hydraulic pump body 1. Through the above settings, this filter pipe achieves the filtration effect while also improving the flow stability of the hydraulic pump.
[0059] As used herein, the phrases “at least one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.
[0060] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0061] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.
[0062] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.
Claims
1. A hydraulic pump with stable flow rate, characterized in that, include: The hydraulic pump body (1) has an oil inlet (2) at one end and an oil outlet (3) at the other end. The oil inlet (2) is connected to a filter pipe (4). The filter fitting (4) includes: A rotating component (41) located in the front section of the oil flow and an open filter screen (42) located in the rear section of the oil flow. The rotating component (41) guides the hydraulic oil to form a vortex, so that solid impurities approach the inner wall of the filter pipe (4) under centrifugal force and are intercepted by the open filter screen (42).
2. The hydraulic pump as described in claim 1, characterized in that, The open filter screen (42) includes a mating ring (43) and a mesh body (44). The mating ring (43) fits tightly against the inner wall of the filter pipe (4); The mesh (44) connects to the entire ring of the mating ring (43) to filter solid impurities.
3. The hydraulic pump as described in claim 2, characterized in that, The mesh (44) protrudes in the direction of the rotating member (41), and a circular opening (45) is provided at the center of the protrusion of the mesh (44).
4. The hydraulic pump as described in claim 1, characterized in that, The rotating component (41) includes a fixed post (46), a rotating part (47), and a driving part (48); wherein The fixing column (46) is connected to the inner wall of the filter pipe (4), and the length of the fixing column (46) is greater than the inner radius of the filter pipe (4); The rotating part (47) is rotatably mounted on the fixed column (46), and the rotating part (47) is coaxial with the filter tube (4); and The drive unit (48) is disposed on the outer wall of the filter tube (4) and is connected to the rotating unit (47) in a transmission manner to drive the rotating unit (47) to rotate.
5. The hydraulic pump as described in claim 4, characterized in that, The rotating part (47) includes a rotating shaft (471) and a plurality of helical blades (472). The rotating shaft (471) is inserted into the fixed post (46); and The spiral blades (472) are arranged in a circular array on the rotating shaft (471) to guide the oil body spiral forward after the rotating part (47) rotates.
6. The hydraulic pump as described in claim 1, characterized in that, The distance L between the open filter screen (42) and the rotating part (41) is at least 50cm, so that solid impurities undergo centrifugal action for a certain period of time and approach the inner wall of the filter tube (4).
7. A filter fitting for a hydraulic pump, characterized in that, include: The filter fitting (4) is located at the oil inlet (2) and includes a rotating part (41) and an open filter screen (42). The axis of the rotating component (41) is aligned with the center of the central opening (45) of the open filter screen (42) so that the oil flowing in forms a vortex after passing through the rotating component (41) and enters the oil inlet (2) through the opening (45).
8. The filter fitting as described in claim 7, characterized in that, The rotating component (41) includes a fixed post (46), a rotating part (47), and a driving part (48); wherein The fixing column (46) is connected to the inner wall of the filter pipe (4), and the length of the fixing column (46) is greater than the inner radius of the filter pipe (4); The rotating part (47) is rotatably mounted on the fixed column (46), and the rotating part (47) is coaxial with the filter tube (4); and The drive unit (48) is disposed on the outer wall of the filter pipe (4) and is connected to the rotating unit (47) for transmission, so as to drive the rotating unit (47) to rotate, thereby guiding the oil to form a vortex.
9. A hydraulic pump with stable flow rate, characterized in that, include: The hydraulic pump body (1) has an oil inlet (2) at one end and an oil outlet (3) at the other end; and The filter fitting as described in claim 7 or 8 is disposed at the oil inlet (2).
10. The hydraulic pump as claimed in claim 9, characterized in that, The open filter screen (42) includes a mesh body (44) protruding in the direction of the rotating member (41), and a circular opening (45) is opened at the protruding center of the mesh body (44).