A cylinder cleanliness enhancement filtration device

Abstract

The utility model relates to hydraulic oil filtering technical field discloses a kind of cylinder cleanliness promotion filtering device, including filter drum and upper cover, upper cover bottom is provided with screw cylinder, the mode of screw cylinder is rotated and is connected to the inside of filter drum makes upper cover install in the top of filter drum, filter drum bottom is provided with the liquid inlet pipe being communicated with its inside, upper cover surface is provided with the liquid outlet pipe being communicated with the inside of filter drum, the surface below of the side of filter drum is provided with observation window, the inside below and above of filter drum respectively slidably are provided with lower slide and upper slide.The utility model technical scheme is provided with upper slide block and lower slide block in the inside of filter drum, filter core is fixed between the two, and spring is pressed lower slide block, so that filter core and lower slide block are initially in lower position, when filter core is seriously blocked, hydraulic oil passes through resistance increase, will press lower slide block and filter core and move position, so that the position of observation window can be judged lower slide plate position, indirectly judge filter core consumption degree, convenient for timely replacement filter core.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic oil filtration technology, specifically a cylinder cleanliness improvement filtration device. Background Technology

[0002] Piston pumps are the core components of hydraulic systems. They rely on the reciprocating motion of pistons to change the volume of the sealed cavity, thereby achieving oil suction and pressure. They offer advantages such as high rated pressure, compact structure, high efficiency, and convenient flow regulation, and are widely used in high-pressure, high-flow, and flow-regulating applications, such as hydraulic presses, construction machinery, and ships. However, they have complex structures, high maintenance costs, and strict requirements for oil cleanliness. The cylinder of the piston pump is a key component that houses and seals the pistons. It is mostly made of high-strength, wear-resistant metals, and maintaining the cleanliness of the cylinder and hydraulic oil is crucial to prevent impurities from clogging or wearing the pistons and seals, reducing malfunctions, and extending the pump's service life. Therefore, it is necessary to filter impurities in the hydraulic oil.

[0003] The filter element used in the filtration device is located inside the device. Once the filter element reaches the end of its lifespan, not only does its filtration efficiency decrease, but it also becomes clogged, increasing resistance to hydraulic oil flow. However, it's impossible to directly assess the filter element's condition from the outside and determine when replacement is needed. Therefore, we propose a cylinder block cleanliness improvement filtration device. Utility Model Content

[0004] The purpose of this utility model is to provide a cylinder cleanliness improvement filtration device. It is achieved by setting an upper slider and a lower slider inside the filter cylinder, with the filter element fixed between them. A spring presses down on the upper slider so that the filter element and the lower slider are initially in the lower position. When the filter element is severely clogged, the hydraulic oil increases the resistance, which pushes down the lower slider and the filter element to move their position. The position of the lower slider can be determined by observing the position of the observation window, which indirectly determines the degree of filter element consumption and facilitates timely replacement of the filter element, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cylinder cleanliness improvement filtration device, comprising a filter cylinder and a top cover, wherein a screw cylinder is provided at the bottom of the top cover, and the top cover is installed above the filter cylinder by screwing the screw cylinder into the inside of the filter cylinder; an inlet pipe communicating with the inside of the filter cylinder is provided at the bottom of the filter cylinder, and an outlet pipe communicating with the inside of the filter cylinder is provided on the surface of the top cover; an observation window is provided on the lower side surface of the filter cylinder; a lower slide plate and an upper slide plate are slidably disposed at the bottom and top of the filter cylinder, respectively; a circular support groove is provided at the bottom of the upper slide plate and above the lower ring plate; a filter element is placed between the support grooves of the upper slide plate and the lower slide plate; a spring is abutting between the top of the upper slide plate and the bottom of the top cover inside the screw cylinder; a through opening is also provided on the surface of the upper slide plate and the lower slide plate; the lower slide plate is located slightly below the observation window.

[0006] By adopting the above technical solution, the filter element's resistance to flow increases due to excessive adsorption of impurities. This allows the filter element and the lower slide plate to be pressed upwards, raising the upper slide plate. The position of the lower slide plate can be determined through the observation window, thus indirectly judging the degree of filter element blockage and whether the filter element needs to be replaced.

[0007] Optionally, the surface of the observation window is provided with scale lines, which are evenly distributed on the surface of the observation window.

[0008] By adopting the above technical solution, the presence of scale lines allows for a more accurate determination of the skateboard's position.

[0009] Optionally, a first hexagonal block is fixed to the bottom of the filter cylinder on the outer ring of the liquid inlet pipe, and the first hexagonal block is welded to the bottom surface of the filter cylinder.

[0010] By adopting the above technical solution, when it is necessary to unscrew the top cover, a wrench can be used to lock the filter cartridge in place on the first hexagonal block to prevent it from rotating.

[0011] Optionally, a second hexagonal block is fixed to the surface of the upper cover of the outer ring of the liquid outlet pipe, and the second hexagonal block is connected to the upper cover as an integral structure.

[0012] By adopting the above technical solution, another wrench can be used to hold the second hexagonal block, which can rotate the top cover and unscrew it.

[0013] Optionally, an annular support ring is provided at the lower part of the interior of the filter cartridge, and the lower slide plate is supported above the support ring.

[0014] By adopting the above technical solution, the support ring restricts and prevents the lower slide plate and filter element from being in an excessively low position.

[0015] Optionally, a sealing ring is fixed around the outer ring of the lower slide plate, and the sealing ring can slide against the inner wall surface of the filter cylinder.

[0016] By adopting the above technical solution, a good sealing effect is achieved between the outer ring of the lower slide plate and the filter cartridge.

[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0018] 1. The technical solution of this application has an upper slider and a lower slider inside the filter cylinder, with the filter element fixed between them. The upper slider is pressed down by a spring so that the filter element and the lower slider are initially in the lower position. When the filter element is severely clogged, the hydraulic oil increases the resistance and presses down the lower slider and the filter element to move. The position of the lower slider can be determined by the position of the observation window, which indirectly determines the degree of filter element wear and facilitates timely replacement of the filter element.

[0019] 2. The technical solution of this application has a first hexagonal block fixed on the bottom surface of the filter cylinder and a second hexagonal block fixed on the surface of the top cover. When the top cover needs to be removed, a wrench can be used to lock the first hexagonal block and the second hexagonal block, one locking the other to drive the top cover to rotate, thus making it easy to remove. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the overall structure of the cylinder cleanliness improvement filtration device of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the cylinder cleanliness improvement filter device of this utility model;

[0023] Figure 3 This is a schematic diagram of the outer ring structure of the lower slide plate of the filter device for improving cylinder cleanliness of this utility model.

[0024] In the diagram: 1. Filter cylinder; 11. Inlet pipe; 12. First hexagonal block; 13. Spring; 14. Support ring; 2. Top cover; 21. Screw barrel; 22. Outlet pipe; 23. Second hexagonal block; 3. Lower slide plate; 31. Sealing ring; 4. Upper slide plate; 5. Support groove; 6. Port; 7. Filter element; 8. Observation window; 81. Scale line. Detailed Implementation

[0025] Please see Figure 1-3 This utility model provides a technical solution: a cylinder cleanliness improvement filtration device, including a filter cylinder 1 and an upper cover 2. The bottom of the upper cover 2 is provided with a screw cylinder 21, which is screwed into the upper interior of the filter cylinder 1 by means of screwing, so that the upper cover 2 is installed on the upper part of the filter cylinder 1. The bottom of the filter cylinder 1 is provided with an inlet pipe 11 communicating with its interior, which is used to connect to the return pipe of hydraulic oil.

[0026] The surface of the upper cover 2 is provided with an outlet pipe 22 that communicates with the inside of the filter cylinder 1. The outlet pipe 22 is connected to the inlet at the front end of the plunger pump cylinder, so that the hydraulic oil enters the plunger pump cylinder after passing through the inside of the filter cylinder 1.

[0027] Inside the filter cylinder 1, a lower slide plate 3 and an upper slide plate 4 are slidably placed at the bottom and top, respectively. Circular support grooves 5 are provided at the bottom of the upper slide plate 4 and above the lower ring plate. The support grooves 5 of the two slide plates are the same size, so that a filter element 7 is placed between the support grooves 5 of the upper slide plate 4 and the lower slide plate 3. Furthermore, a through-hole 6 is opened on the surface of the upper slide plate 4 and the lower slide plate 3. When the hydraulic oil flows from bottom to top, it passes through the through-hole 6, through the lower slide plate 3 and the upper slide plate 4, and is filtered by the filter element 7 before finally flowing out from the top.

[0028] A spring 13 is also provided above the upper slide plate 4. The two ends of the spring 13 abut against the upper surface of the upper slide plate 4 and the bottom surface of the upper cover 2 inside the screw barrel 21, which will push the upper slide plate 4, filter element 7 and lower slide plate 3 downward. An annular support ring 14 is provided at the bottom inside the filter barrel 1, so that the lower slide plate 3 is supported above the support ring 14, so as to prevent the filter element 7 from being too close to the liquid inlet pipe 11 and affecting the filtration effect.

[0029] In actual use, as the filter element 7 adsorbs more impurities, its resistance to hydraulic oil will gradually increase. Under the action of the spring 13 pressing down on the upper slide plate 4 and the filter element 7, the filter element 7 and the lower slide plate 3 are in close contact, which will eventually cause additional pressure to be applied to the filter element 7 and the lower slide plate 3. When the filter element 7 needs to be replaced and is severely clogged, the resistance is greater and the pressure on the filter element 7 and the lower slide plate 3 is greater, thereby pushing the lower slide plate 3, the filter element 7 and the upper slide plate 4 upward and compressing the spring 13.

[0030] Meanwhile, an observation window 8 is provided on the lower side surface of the filter cartridge 1. In the initial state, the sliding plate 3 is located slightly below the observation window 8. The distance that the sliding plate 3 slides upward can be judged by the observation window 8. By judging the distance that the sliding plate 3 moves upward, the degree of blockage of the filter element 7 can be judged, which facilitates timely replacement.

[0031] The surface of the observation window 8 is provided with scale lines 81, which are evenly distributed on the surface of the observation window 8. This allows for a more accurate determination of the upward movement distance of the lower slide plate 3. The outer ring of the lower slide plate 3 is fixed with a sealing ring 31. The sealing ring 31 can slide against the inner wall surface of the filter cylinder 1 to achieve a good sealing effect. When the lower slide plate 3 moves upward, the sealing ring 31 on its outer ring slides upward against the position of the observation window 8, allowing for a clearer observation of the position of the lower slide plate 3.

[0032] A first hexagonal block 12 is fixed to the bottom of the filter cylinder 1 on the outer ring of the liquid inlet pipe 11. The first hexagonal block 12 is welded to the bottom surface of the filter cylinder 1. A second hexagonal block 23 is fixed to the surface of the upper cover 2 on the outer ring of the liquid outlet pipe 22. The second hexagonal block 23 and the upper cover 2 are connected as an integral structure. When the filter element 7 needs to be replaced, two wrenches are used. One is put on the first hexagonal block 12 and the other is put on the second hexagonal block 23 to rotate, so that the upper cover 2 can be easily rotated and unscrewed.

[0033] In use, the filter cartridge 1 is positioned at the front end of the plunger pump cylinder, connecting the hydraulic oil return pipe to the inlet pipe 11 and the outlet pipe 22 to the plunger pump cylinder. During operation, hydraulic oil enters the filter cartridge 1 through the inlet pipe 11, passes through the port 6, then through the lower slide plate 3 and upper slide plate 4, and is filtered by the filter element 7 to remove impurities. Finally, it exits through the upper outlet pipe 22 and enters the plunger pump. During operation, as the filter element 7 absorbs more impurities, its resistance to hydraulic oil flow gradually increases. Under the pressure of the spring 13 pressing down on the upper slide plate 4 and the filter element 7, the filter element 7 and the lower slide plate 3 are in close contact, eventually resulting in additional pressure acting on the filter element 7 and the lower slide plate 3. When the filter element 7 needs replacement due to severe blockage, the resistance is even greater, impacting the filter... The pressure of the core 7 and the lower slide plate 3 is greater, which pushes the lower slide plate 3, filter element 7 and upper slide plate 4 upward and compresses the spring 13. The sealing ring 31 of the outer ring of the lower slide plate 3 touches the observation window 8 and slides upward. The distance that the lower slide plate 3 moves upward can be judged by the scale line 81, which can be used to judge the degree of blockage of the filter element 7, so as to facilitate timely replacement. When replacing, disconnect the connection between the pipeline and the liquid outlet pipe 22. Use two wrenches, one on the first hexagonal block 12 and the other on the second hexagonal block 23, to rotate and unscrew the upper cover 2, so that the spring 13, upper slide plate 4 and filter element 7 can be taken out and the filter element 7 can be replaced. After that, screw the upper cover 2 back on to reconnect the pipeline to the liquid outlet pipe 22 and continue to use it.

Claims

1. A cylinder cleanliness improvement filtration device, comprising a filter cylinder (1) and a top cover (2), wherein a screw (21) is provided at the bottom of the top cover (2), and the top cover (2) is installed above the filter cylinder (1) by screwing the screw (21) into the filter cylinder (1), an inlet pipe (11) communicating with the bottom of the filter cylinder (1) is provided, and an outlet pipe (22) communicating with the inside of the filter cylinder (1) is provided on the surface of the top cover (2), characterized in that: An observation window (8) is provided on the lower side surface of the filter cartridge (1); The filter cylinder (1) has a lower slide plate (3) and an upper slide plate (4) slidably placed inside the lower part and the upper part, respectively. The bottom of the upper slide plate (4) and the top of the lower ring plate are provided with circular support grooves (5). A filter element (7) is placed between the support grooves (5) of the upper slide plate (4) and the lower slide plate (3). A spring (13) is placed between the upper slide plate (4) and the bottom of the upper cover (2) inside the screw cylinder (21). The surfaces of the upper slide plate (4) and the lower slide plate (3) are also provided with through openings (6). The lower slide plate (3) is located slightly below the observation window (8).

2. The cylinder cleanliness improvement filtration device according to claim 1, characterized in that: The surface of the observation window (8) is provided with scale lines (81), which are evenly distributed on the surface of the observation window (8).

3. The cylinder cleanliness improvement filtration device according to claim 1, characterized in that: The bottom of the filter cylinder (1) on the outer ring of the liquid inlet pipe (11) is fixed with a first hexagonal block (12), which is welded to the bottom surface of the filter cylinder (1).

4. The cylinder cleanliness improvement filtration device according to claim 1 or 3, characterized in that: The surface of the upper cover (2) of the outer ring of the liquid outlet pipe (22) is fixed with a second hexagonal block (23), and the second hexagonal block (23) and the upper cover (2) are connected as an integral structure.

5. The cylinder cleanliness improvement filtration device according to claim 1, characterized in that: An annular support ring (14) is provided at the bottom inside the filter cylinder (1), and the lower slide plate (3) is supported above the support ring (14).

6. The cylinder cleanliness improvement filtration device according to claim 1, characterized in that: The outer ring of the lower slide plate (3) is fixed with a sealing ring (31), which can slide against the inner wall surface of the filter cylinder (1).

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