Hydraulic motor with a filter residue function

Abstract

This application relates to the field of hydraulic motor technology and discloses a hydraulic motor with a slag-filtering function, including a motor body, an output shaft, an oil inlet, and an oil outlet, with a fixed cylinder above the oil inlet. This hydraulic motor with a slag-filtering function utilizes a 360° circumferential filter design in the filter cylinder. As the oil permeates from the inside out, it forms a multi-channel filtration system, effectively increasing the filtration area compared to a conical filter screen, significantly reducing filtration resistance, avoiding insufficient oil intake due to filter screen blockage, and improving filtration efficiency. A scraper plate rotates synchronously with the cooling pipe, periodically removing impurities adhering to the inner wall of the filter cylinder, preventing impurities from clogging the filter holes, maintaining filter hole permeability, and ensuring continuous and stable filtration efficiency. The cooling pipe adopts a serpentine structure design, extending the oil heat exchange path at the same flow rate, and further improving cooling uniformity through rotation, thereby increasing heat exchange efficiency, effectively delaying the aging of internal seals in the motor body, and improving lubrication performance.

Description

Technical Field

[0001] This application relates to the field of hydraulic motor technology, specifically to a hydraulic motor with a slag-filtering function. Background Technology

[0002] A hydraulic motor is an actuator in a hydraulic system that converts the pressure energy of the liquid provided by a hydraulic pump into the mechanical energy (torque and speed) of its output shaft. Liquid is the medium that transmits force and motion.

[0003] An existing patent (publication number: CN222208482U) discloses a hydraulic motor with a slag-filtering function, relating to the field of hydraulic motor technology. This utility model includes a hydraulic motor body, on the surface of which an outlet pipe and an inlet pipe are installed. A filter assembly is provided at the port of the inlet pipe. The filter assembly includes a sleeve fitted onto the surface of the inlet pipe. Hydraulic oil enters the hydraulic motor body from the sleeve through the inlet pipe. A bracket is provided between the sleeve and the inlet pipe for fixation. A filter module is provided at the port of the inlet pipe. This utility model uses the filter module to filter the oil, preventing large particulate impurities in the oil from causing blockage of the internal oil passages of the hydraulic motor body.

[0004] During operation, the friction between moving parts such as gears, blades, or pistons in the aforementioned hydraulic motor generates heat, and the oil easily reaches high temperatures. When circulation is unobstructed, the aforementioned structure lacks cooling for the oil, and the high-temperature oil will accelerate the aging of the seals and reduce lubrication performance, affecting the service life of the motor. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a hydraulic motor with a filtration function, which has the advantages of high filtration efficiency and efficient cooling, thus solving the problems mentioned in the background technology.

[0006] To achieve the above objectives, this application provides the following technical solution: a hydraulic motor with a slag-filtering function, comprising a motor body, an output shaft, an oil inlet, and an oil outlet. A fixed cylinder is provided above the oil inlet, and the axis of the fixed cylinder is parallel to the axis of the output shaft. A filter cylinder is installed between the left and right inner walls of the fixed cylinder. One end of the filter cylinder is fixedly connected to an input pipe, and one end of the input pipe extends into the interior of the filter cylinder. The other end of the filter cylinder is provided with an output pipe, one end of which is connected to the oil inlet, and the other end of which is fixedly connected to the outer surface of the fixed cylinder.

[0007] A cooling pipe is rotatably connected between the left and right inner walls of the fixed cylinder. Two rotating rods are fixedly connected to the outer surface of the cooling pipes. A scraper is fixedly connected to each end of the two rotating rods to remove impurities adhering to the inner wall of the filter cylinder.

[0008] Furthermore, the cooling pipe is designed with a serpentine structure.

[0009] Through the above scheme, the serpentine structure causes the oil to flow through multiple folds in a limited space, increasing the heat exchange area and improving cooling uniformity.

[0010] Furthermore, each end of the cooling pipe is provided with a rotary joint, and the two rotary joints are respectively connected to the external oil cooling circulation equipment pipeline.

[0011] The above solution ensures that the cooling pipe connection is stable when the pipe rotates, enabling continuous circulation of coolant and avoiding pipe entanglement or leakage caused by rotation.

[0012] Furthermore, a shaft plate is fixedly connected to the outer surface of the motor body near the output shaft, and a transmission rod is rotatably connected inside the shaft plate. One end of the transmission rod near the output shaft is connected to the surface of the output shaft through an external belt and pulley, and the other end of the transmission rod is connected to one end of the corresponding serpentine cooling pipe through a reduction gear.

[0013] With the above scheme, the output shaft drives the transmission rod to rotate via belt drive, and after being reduced by reduction gear, it drives the cooling pipe to rotate at a low speed to avoid excessive speed and deformation of the cooling pipe.

[0014] Furthermore, a connecting seat is fixedly connected between the motor body and the fixed cylinder.

[0015] The above solution provides rigid support, ensuring that the fixed cylinder and the motor body are stably fixed, reducing vibration transmission, and ensuring the operational stability of the filter cylinder and cooling pipe.

[0016] Furthermore, a maintenance box is provided on the outer surface of the fixed cylinder, and a sealing plate is provided on the top of the maintenance box. The sealing plate is removable.

[0017] With the above solution, the maintenance box can be opened to easily clean the impurities trapped inside the filter cartridge, thus shortening maintenance time.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0019] This hydraulic motor with slag filtering function has a filter cylinder with a 360° circumferential filter hole design. When the oil permeates from the inside to the outside, it forms a multi-channel filtration. Compared with the conical filter screen, the filtration area is effectively increased, the filtration resistance is significantly reduced, and the insufficient oil intake caused by filter screen blockage is avoided, thereby improving the filtration efficiency.

[0020] The scraper rotates synchronously with the cooling pipe, periodically peeling off impurities adhering to the inner wall of the filter cartridge, preventing impurities from clogging the filter holes, maintaining the permeability of the filter holes, and ensuring continuous and stable filtration efficiency. The cooling pipe adopts a serpentine structure design, which extends the oil heat exchange path under the same flow rate, and further improves the cooling uniformity and heat exchange efficiency through rotation, effectively delaying the aging of the internal seals of the motor body and improving lubrication performance.

[0021] The output shaft drives the cooling pipe to rotate via belt and gear transmission. The motor's own power is used to link the filtration and cooling systems. No external drive device is required. The filtration and cooling processes are automatically started when the hydraulic motor is working. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this application;

[0023] Figure 2 This is a sectional view of the fixed cylinder structure of this application;

[0024] Figure 3 This is a front view of the overall structure of this application;

[0025] Figure 4 This is a structural diagram of the filter cartridge of this application;

[0026] Figure 5 This is a structural diagram of the cooling pipe in this application.

[0027] In the picture:

[0028] 1. Motor body; 101. Output shaft; 102. Oil inlet; 103. Oil outlet;

[0029] 2. Fixed cylinder; 3. Filter cylinder; 4. Inlet pipe; 5. Outlet pipe; 6. Cooling pipe; 7. Rotating rod; 8. Scraper; 9. Rotary joint; 10. Shaft plate; 11. Transmission rod; 12. Connecting seat; 13. Maintenance box; 14. Sealing plate. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3This embodiment of a hydraulic motor with a slag-filtering function includes a motor body 1, an output shaft 101, an oil inlet 102, and an oil outlet 103. A fixed cylinder 2 is provided above the oil inlet 102, and the axis of the fixed cylinder 2 is parallel to the axis of the output shaft 101. A filter cylinder 3 is installed between the left and right inner side walls of the fixed cylinder 2. The circumferential surface of the filter cylinder 3 can perform filtration. Compared with the existing technology of filtering by a conical filter screen, it can effectively improve the oil throughput and ensure the oil intake. One end of the filter cylinder 3 is fixedly connected to an input pipe 4, and one end of the input pipe 4 extends into the interior of the filter cylinder 3. The other end of the filter cylinder 3 is provided with an output pipe 5. One end of the output pipe 5 is connected to the oil inlet 102, and the other end of the output pipe 5 is fixedly connected to the outer surface of the fixed cylinder 2. With the above configuration, the oil can directly enter the interior of the filter cylinder 3, be filtered through the filter holes on the inner surface of the filter cylinder 3, intercept impurities inside the filter cylinder 3, and then enter the oil inlet 102 through the output end.

[0032] Please see Figure 2 , Figure 4 and Figure 5 A connecting seat 12 is fixedly connected between the motor body 1 and the fixed cylinder 2. The connecting seat 12 provides rigid support to ensure that the fixed cylinder 2 and the motor body 1 are stably fixed, reduce vibration transmission, and ensure the operational stability of the filter cylinder 3 and the cooling pipe 6. The cooling pipe 6 is rotatably connected between the left and right inner walls of the fixed cylinder 2. By rotating the cooling pipe 6 inside the filter cylinder 3, the internal oil can fully contact the filter pipe, promote heat exchange efficiency, and improve the cooling effect. Two rotating rods 7 are fixedly connected to the outer surface of the cooling pipe 6, and a scraper is fixedly connected to each end of the two rotating rods 7. The wiping plate 8 is used to remove impurities attached to the inner wall of the filter cartridge 3 to ensure the filtration efficiency of the filter cartridge 3. The cooling pipe 6 is designed with a serpentine structure, which causes the oil to form multiple folds in a limited space, increasing the heat exchange area and improving the cooling uniformity. The outer surface of the fixed cylinder 2 is provided with a maintenance box 13, and the top of the maintenance box 13 is provided with a sealing plate 14. The sealing plate 14 is detachable and is connected by a snap-fit ​​and is in close contact with the maintenance box 13 to ensure airtightness. After the maintenance box 13 is opened, it is easy to clean the impurities intercepted in the filter cartridge 3 and shorten the maintenance time.

[0033] Please see Figure 1 , Figure 2 and Figure 5Rotary joints 9 are provided at both ends of the cooling pipe 6. The two rotary joints 9 are respectively connected to the external oil cooling circulation equipment pipeline (rotary joints 9 are existing technology and will not be described in detail here). The rotary joints 9 ensure that the pipeline connection is stable when the cooling pipe 6 rotates, realizes continuous circulation of coolant, and avoids pipeline entanglement or leakage caused by rotation. A shaft plate 10 is fixedly connected to the outer surface of the motor body 1 near the output shaft 101. A transmission rod 11 is rotatably connected inside the shaft plate 10. One end of the transmission rod 11 near the output shaft 101 is connected to the surface of the output shaft 101 by a belt and a pulley (not shown in the figure). The other end of the transmission rod 11 is connected to one end of the corresponding serpentine cooling pipe 6 by a reduction gear (not shown in the figure). The output shaft 101 drives the transmission rod 11 to rotate through the belt drive. After being reduced by the reduction gear, it drives the cooling pipe 6 to rotate at a low speed to avoid excessive speed and deformation of the cooling pipe 6.

[0034] The working principle of the above embodiment is as follows: the oil enters the filter cylinder 3 from the input pipe 4. Utilizing the 360° circumferential filter hole design of the filter cylinder 3, a multi-channel filtration path is formed. When the oil permeates from the inside to the outside, impurities are intercepted on the inner wall of the filter cylinder 3. The filtered clean oil enters the motor oil inlet 102 through the output pipe 5. Compared with the traditional conical filter screen, the circumferential filter holes significantly increase the effective filtration area, reduce filtration resistance, and avoid insufficient oil intake due to blockage. The external coolant enters the serpentine cooling pipe 6 through the rotary joint 9. The serpentine structure extends the oil heat exchange path, increases the contact area, and improves cooling uniformity. The cooling pipe 6 rotates at low speed in the oil, so that the cooling pipe 6 is in uniform contact with the oil, reducing the oil temperature. When the cooling pipe 6 rotates, the rotating rod 7 drives the scraper 8 to periodically scrape the inner wall of the filter cylinder 3, removing the attached impurities, preventing filter hole blockage, and maintaining filtration efficiency.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic motor with a slag-filtering function, comprising a motor body (1), an output shaft (101), an oil inlet (102), and an oil outlet (103), characterized in that: A fixed cylinder (2) is provided above the oil inlet (102). The axis of the fixed cylinder (2) is parallel to the axis of the output shaft (101). A filter cylinder (3) is installed between the left and right inner walls of the fixed cylinder (2). One end of the filter cylinder (3) is fixedly connected to an input pipe (4). One end of the input pipe (4) extends into the interior of the filter cylinder (3). The other end of the filter cylinder (3) is provided with an output pipe (5). One end of the output pipe (5) is connected to the oil inlet (102). The other end of the output pipe (5) is fixedly connected to the outer surface of the fixed cylinder (2). A cooling pipe (6) is rotatably connected between the left and right inner walls of the fixed cylinder (2). Two rotating rods (7) are fixedly connected to the outer surface of the cooling pipe (6). A scraper (8) is fixedly connected to each end of the two rotating rods (7) to remove impurities attached to the inner wall of the filter cylinder (3).

2. A hydraulic motor with slag filtering function according to claim 1, characterized in that: The cooling pipe (6) is designed with a serpentine structure.

3. A hydraulic motor with a slag-filtering function according to claim 2, characterized in that: The cooling pipe (6) is provided with rotary joints (9) at both ends, and the two rotary joints (9) are respectively connected to the external oil cooling circulation equipment pipeline.

4. A hydraulic motor with slag filtering function according to claim 1, characterized in that: The motor body (1) is fixedly connected to a shaft plate (10) on the outer surface near the output shaft (101). A transmission rod (11) is rotatably connected inside the shaft plate (10). One end of the transmission rod (11) near the output shaft (101) is connected to the surface of the output shaft (101) by a belt and a pulley. The other end of the transmission rod (11) is connected to one end of the corresponding serpentine cooling pipe (6) by a reduction gear.

5. A hydraulic motor with slag filtering function according to claim 1, characterized in that: A connecting seat (12) is fixedly connected between the motor body (1) and the fixed cylinder (2).

6. A hydraulic motor with slag filtering function according to claim 1, characterized in that: The outer surface of the fixed cylinder (2) is provided with a maintenance box (13), and the top of the maintenance box (13) is provided with a sealing plate (14), which is detachable.

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