Filter press hydraulic oil filtering and purifying device

Abstract

The invention relates to the technical field of hydraulic oil purification, in particular to a filter press hydraulic oil filtering and purifying device which comprises an upper filtering shell, a lower filtering shell is arranged below the upper filtering shell, an oil outlet pipe is connected to the surface of the lower filtering shell, and a filtering bin is installed in the upper filtering shell. A fixed pipe is mounted at the top of the upper filter shell; a filter plate is arranged on one side of the filter bin, and a connecting seat is mounted at the top of the filter bin; the bottom of the fixing pipe is slidably sleeved with a butt joint pipe, the butt joint pipe is in butt joint with the connecting base, and the side face of the fixing pipe is connected with an oil inlet pipe and a bypass pipe. Through the arrangement of the bypass pipe, in the working process of the filter press, when too many impurities are accumulated in the filter bin to cause blockage, the pressure of hydraulic oil in the fixed pipe is increased, and the hydraulic oil flows out through the bypass pipe on one side of the fixed pipe, so that the problem of pipe explosion caused by blockage of the filter device is avoided.

Description

Technical Field

[0001] This invention relates to the field of hydraulic oil purification, specifically to a hydraulic oil filtration and purification device for a filter press. Background Technology

[0002] Filter presses are core equipment used in many key fields such as mining, chemical production, and environmental pollution control to achieve solid-liquid separation. Their performance and stability directly affect the efficient operation and emission compliance of production lines in various industries. All core actions of the equipment, such as the closing of the pressure plate, the switching of the pulling plate, and the unloading of materials, rely on a highly reliable and high-precision hydraulic system to provide continuous driving force. The operating status of the hydraulic system can be regarded as a "barometer" of the filter press's working efficiency.

[0003] Hydraulic oil, as the core medium of the hydraulic system, not only plays a crucial role in transmitting power, but also lubricates precision components such as hydraulic pumps and valves and reduces mechanical wear. Its cleanliness directly determines the service life of these key hydraulic components and is directly related to the stability and safety of the entire filter press. Once the hydraulic oil is contaminated, it can easily cause serious malfunctions such as component jamming and oil circuit blockage.

[0004] Because filter presses often operate in harsh environments such as mine tailings treatment, chemical waste purification, and sewage sludge disposal, their hydraulic systems need to operate under severe conditions of high pressure and frequent start-stop cycles. During this process, friction between metal components easily generates fine metal shavings, and seals, under long-term exposure to high pressure and oil temperature, gradually age, producing colloidal particles. These impurities directly mix into the hydraulic oil, causing contamination. In existing technologies, to reduce hydraulic oil contamination, the industry generally installs a dedicated filter device in the hydraulic system of the filter press. This device uses an internal filter element to filter the flowing hydraulic oil, precisely intercepting impurities such as metal shavings and colloidal particles, thereby effectively reducing contamination and providing a basic guarantee for the stable operation of the hydraulic system. However, with the increase of usage time, the filter element's permeability gradually deteriorates. Once too many impurities accumulate, it can lead to filter element blockage, causing problems such as oil pipe bursts.

[0005] Therefore, a hydraulic oil filtration and purification device for a filter press is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a hydraulic oil filtration and purification device for a filter press, in order to solve the problem mentioned in the background art that as the usage time increases, the permeability of the filter element gradually deteriorates, and once too many impurities accumulate, it will lead to filter element blockage and cause oil circuit pipe rupture.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An upper filter housing is provided below the upper filter housing, an oil outlet pipe is connected to the surface of the lower filter housing, a filter chamber is installed inside the upper filter housing, and a fixing pipe is installed on the top of the upper filter housing. A filter plate is provided on one side of the filter chamber, and a connecting seat is installed on the top of the filter chamber; The bottom of the fixed pipe is slidably fitted with a connecting pipe, which is connected to the connecting seat. The side of the fixed pipe is connected with an oil inlet pipe and a bypass pipe.

[0008] Preferably, an installation window is provided on one side of the upper filter housing, the installation window penetrates the side plate of the upper filter housing, and a positioning post is fixedly installed on the inner wall of the upper filter housing at a position corresponding to the installation window.

[0009] Preferably, the lower filter housing is provided with a slow-flow core, which is made of water-absorbing material.

[0010] Preferably, one end of the filter chamber is detachably connected to a tail plate, the surface of the tail plate is provided with a positioning hole, the tail plate is sleeved on the surface of the positioning column through the positioning hole, and the other end of the filter chamber is provided with an end plate.

[0011] Preferably, a transition plate is provided between the end plate and the filter chamber. The transition plate is inserted into the interior of the mounting window, and a sealing gasket is fitted on the surface of the transition plate, with the sealing gasket fitting against the end plate.

[0012] Preferably, a bearing seat is fixedly installed at the top of the fixed tube, a control lever is inserted into the inside of the fixed tube, the control lever is rotatably connected to the fixed tube through the bearing seat, a handle is fixedly installed at the top of the control lever after it extends to the outside of the fixed tube, a threaded rod integrally formed with the control lever is provided at the end of the control lever away from the handle, and a guide block is fixedly provided on the side of the fixed tube.

[0013] Preferably, the connecting seat is in communication with the interior of the filter chamber, and the surface of the connecting seat is provided with a insertion groove.

[0014] Preferably, the connecting pipe is inserted into the inside of the connecting groove, the surface of the connecting pipe is provided with a guide groove, the guide block is slidably disposed inside the guide groove, the inside of the connecting pipe is provided with a plunger, the surface of the plunger is provided with a threaded groove, the threaded rod is screwed into the inside of the threaded groove, the threaded groove is used to seal the fixed pipe, and a connecting post is fixedly connected between the threaded groove and the inner wall of the connecting pipe.

[0015] Preferably, the oil inlet pipe is located at the end of the fixed pipe outside the upper filter housing.

[0016] Preferably, a flow sensor is installed inside the bypass pipe. The bypass pipe is located at one end of the fixed pipe inside the upper filter housing. A connecting housing connects the bypass pipe and the fixed pipe. A partition is fixedly installed inside the connecting housing. A flow guide hole is opened on the surface of the partition. A blocking plate is provided on the side of the partition away from the fixed pipe. The blocking plate is used to block the flow guide hole. A telescopic rod is fixedly connected to the surface of the blocking plate. The telescopic rod slides through the partition. A limit plate is fixedly connected to the end of the telescopic rod away from the blocking plate. A compression spring is provided between the limit plate and the blocking plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting up a bypass pipe, when the filter press is working, if too many impurities accumulate inside the filter chamber and cause blockage, the hydraulic oil pressure inside the fixed pipe increases, causing the hydraulic oil to flow out through the bypass pipe on one side of the fixed pipe, thereby avoiding the problem of pipe bursting due to blockage of the filter device.

[0018] 2. By placing the filter plate on one side of the filter chamber, the filtered impurities are prevented from spreading evenly on the surface of the filter plate. Instead, the filtered impurities accumulate at the bottom of the filter chamber rather than on the surface of the filter plate, thereby greatly reducing the time it takes for the filter plate to become clogged.

[0019] 3. By turning the control lever with the handle, the threaded rod rotates inside the threaded groove, driving the plunger to insert into the fixed tube and seal it. At the same time, the connecting pipe disengages from the insertion groove. At this point, the filter chamber can be removed for cleaning or replacement without stopping the machine, greatly improving work efficiency.

[0020] 4. By setting up a slow-flow core, the hydraulic oil first falls on the surface of the slow-flow core after entering the interior of the lower filter housing. The slow-flow core buffers the hydraulic oil and prevents it from splashing inside the lower filter housing. At the same time, when the hydraulic oil passes through the slow-flow core, the water mixed in with the hydraulic oil is absorbed by the slow-flow core, further purifying the hydraulic oil and thus ensuring the performance of the hydraulic oil. Attached Figure Description

[0021] Figure 1 This is an overall schematic diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is an enlarged schematic diagram of point B in part 2 of the present invention; Figure 5 This is a schematic diagram of the filter chamber of the present invention; Figure 6 This is a schematic diagram of the connecting pipe of the present invention.

[0022] In the picture: 1. Upper filter housing; 11. Mounting window; 12. Positioning post; 2. Lower filter housing; 21. Oil outlet pipe; 22. Slow-flow core; 3. Filter chamber; 31. Filter plate; 32. Connecting seat; 33. Insertion groove; 34. Tail plate; 35. Positioning hole; 36. End plate; 37. Transition plate; 38. Sealing gasket; 4. Fixed pipe; 41. Oil inlet pipe; 42. Bearing seat; 43. Control lever; 44. Handle; 45. Threaded rod; 46. Guide block; 5. Connecting pipe; 51. Guide groove; 52. Plunger; 53. Threaded groove; 54. Connecting post; 6. Bypass pipe; 61. Connecting housing; 62. Partition plate; 63. Flow guide hole; 64. Sealing plate; 65. Telescopic rod; 66. Limiting plate; 67. Compression spring. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] like Figure 1-6 As shown, this application provides a hydraulic oil filtration and purification device for a filter press, comprising: An upper filter housing 1 is provided, and a lower filter housing 2 is provided below the upper filter housing 1. An oil outlet pipe 21 is connected to the surface of the lower filter housing 2. A filter chamber 3 is installed inside the upper filter housing 1. A filter plate 31 is provided on one side of the filter chamber 3. A connecting seat 32 is installed on the top of the filter chamber 3. The connecting seat 32 communicates with the interior of the filter chamber 3. An insertion groove 33 is provided on the surface of the connecting seat 32. A fixing pipe 4 is installed on the top of the upper filter housing 1. A connecting pipe 5 is slidably sleeved on the bottom of the fixing pipe 4. The connecting pipe 5 is connected to the connecting seat 32 through the insertion groove 33. An oil inlet pipe 41 and a bypass pipe 6 are connected to the side of the fixing pipe 4.

[0026] In this embodiment: Hydraulic oil enters the interior of fixed pipe 4 through inlet pipe 41, and then enters the interior of filter chamber 3 through fixed pipe 4, connecting pipe 5, and connecting seat 32 in sequence. It then flows out through filter plate 31 on one side of filter chamber 3, thereby achieving the filtration and purification of hydraulic oil. When too many impurities accumulate inside filter chamber 3, causing blockage, the hydraulic oil pressure inside fixed pipe 4 increases, causing hydraulic oil to flow out through bypass pipe 6 on one side of fixed pipe 4, thereby avoiding the problem of pipe bursting due to blockage of the filter device.

[0027] Specifically, such as Figure 1-5 As shown, an installation window 11 is provided on one side of the upper filter housing 1, and the installation window 11 penetrates the side plate of the upper filter housing 1. A positioning post 12 is fixedly installed on the inner wall of the upper filter housing 1 at a position corresponding to the installation window 11. A tail plate 34 is detachably connected to one end of the filter chamber 3. A positioning hole 35 is opened on the surface of the tail plate 34. The tail plate 34 is sleeved on the surface of the positioning post 12 through the positioning hole 35. An end plate 36 is provided at the other end of the filter chamber 3. A transition plate 37 is provided between the end plate 36 and the filter chamber 3. The transition plate 37 is inserted into the interior of the installation window 11. A sealing gasket 38 is sleeved on the surface of the transition plate 37. The sealing gasket 38 is in contact with the end plate 36.

[0028] In this embodiment: the filter chamber 3 is installed into the interior of the upper filter housing 1 through the mounting window 11, and the tail plate 34 is fitted onto the surface of the positioning post 12 through the positioning hole 35 to position the tail end of the filter chamber 3. Then, the transition plate 37 is inserted into the interior of the mounting window 11, so that the sealing gasket 38 fits against the outer surface of the mounting window 11 and is tightened with bolts to realize the installation of the filter chamber 3.

[0029] Specifically, such as Figure 1 As shown, the lower filter housing 2 is provided with a slow-flow core 22, which is made of water-absorbing material.

[0030] In this embodiment, after the hydraulic oil enters the interior of the lower filter housing 2, it first falls onto the surface of the slow-flow core 22. The buffering effect of the slow-flow core 22 prevents the hydraulic oil from splashing inside the lower filter housing 2. At the same time, when the hydraulic oil passes through the slow-flow core 22, the water mixed in the hydraulic oil is absorbed by the slow-flow core 22, further purifying the hydraulic oil and thus ensuring the performance of the hydraulic oil.

[0031] Specifically, such as Figure 2-6As shown, a bearing seat 42 is fixedly installed on the top of the fixed tube 4. A control lever 43 is inserted into the inside of the fixed tube 4. The control lever 43 is rotatably connected to the fixed tube 4 through the bearing seat 42. A handle 44 is fixedly installed on the top of the control lever 43 after it extends to the outside of the fixed tube 4. A threaded rod 45 integrally formed with the control lever 43 is provided at the end of the control lever 43 away from the handle 44. A guide block 46 is fixedly provided on the side of the fixed tube 4. A guide groove 51 is formed on the surface of the connecting tube 5. The guide block 46 is slidably disposed in the inside of the guide groove 51. A plunger 52 is provided inside the connecting tube 5. A threaded groove 53 is formed on the surface of the plunger 52. The threaded rod 45 is screwed into the inside of the threaded groove 53. The threaded groove 53 is used to seal the fixed tube 4. The threaded groove 53 is fixed to the inner wall of the connecting tube 5. A connecting post 54 is connected to the oil inlet pipe 41, which is located at one end of the fixed pipe 4 outside the upper filter housing 1. A flow sensor is installed inside the bypass pipe 6, which is located at one end of the fixed pipe 4 inside the upper filter housing 1. A connecting housing 61 connects the bypass pipe 6 and the fixed pipe 4. A partition 62 is fixedly installed inside the connecting housing 61. A guide hole 63 is opened on the surface of the partition 62. A blocking plate 64 is provided on the side of the partition 62 away from the fixed pipe 4. The blocking plate 64 is used to block the guide hole 63. A telescopic rod 65 is fixedly connected to the surface of the blocking plate 64. The telescopic rod 65 slides through the partition 62. A limit plate 66 is fixedly connected to the end of the telescopic rod 65 away from the blocking plate 64. A compression spring 67 is provided between the limit plate 66 and the blocking plate 64.

[0032] In this embodiment: when there are too many impurities inside the filter chamber 3, causing the filter plate 31 to become clogged, the hydraulic oil inside the fixed pipe 4 pushes open the sealing plate 64 through the guide hole 63, and then enters the interior of the bypass pipe 6, and enters the interior of the lower filter housing 2 through the bypass pipe 6. At this time, the flow sensor inside the bypass pipe 6 senses the hydraulic oil and triggers an alarm to remind the filter chamber 3 to be cleaned. By rotating the control lever 43 with the handle 44, the threaded rod 45 rotates inside the threaded groove 53, causing the plunger 52 to insert into the fixed tube 4 and seal the fixed tube 4. At the same time, the connecting pipe 5 disengages from the insertion groove 33. At this point, the filter chamber 3 can be removed for cleaning or replacement without stopping the machine, which greatly improves work efficiency.

[0033] The specific solution is as follows: Hydraulic oil enters the interior of the fixed pipe 4 through the inlet pipe 41, and then sequentially enters the interior of the filter chamber 3 through the fixed pipe 4, the connecting pipe 5, and the connecting seat 32. It then flows out through the filter plate 31 on one side of the filter chamber 3. When there are too many impurities inside the filter chamber 3, causing the filter plate 31 to become clogged, the hydraulic oil inside the fixed pipe 4 pushes open the sealing plate 64 through the guide hole 63, and then enters the interior of the bypass pipe 6. It then enters the interior of the lower filter housing 2 through the bypass pipe 6. At this time, the flow sensor inside the bypass pipe 6 senses the hydraulic oil and triggers an alarm, reminding the filter chamber 3 to be cleaned. At this time, the control lever 43 is rotated by the handle 44, causing the threaded rod 45 to rotate inside the threaded groove 53, driving the plunger 52 to insert into the interior of the fixed pipe 4 to seal the fixed pipe 4. At the same time, the connecting pipe 5 disengages from the insertion groove 33. At this time, the filter chamber 3 can be removed for cleaning or replacement without stopping the machine, which greatly improves the efficiency of the work.

[0034] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0035] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A hydraulic oil filtration and purification device for a filter press, characterized in that, include: An upper filter housing (1) is provided below the upper filter housing (1), and an oil outlet pipe (21) is connected to the surface of the lower filter housing (2). A filter chamber (3) is installed inside the upper filter housing (1), and a fixing pipe (4) is installed on the top of the upper filter housing (1). A filter plate (31) is provided on one side of the filter chamber (3), and a connecting seat (32) is installed on the top of the filter chamber (3). The bottom of the fixed pipe (4) is slidably fitted with a connecting pipe (5), which is connected to the connecting seat (32). The side of the fixed pipe (4) is connected with an oil inlet pipe (41) and a bypass pipe (6).

2. The hydraulic oil filtration and purification device for a filter press according to claim 1, characterized in that, An installation window (11) is provided on one side of the upper filter housing (1). The installation window (11) penetrates the side plate of the upper filter housing (1). A positioning post (12) is fixedly installed on the inner wall of the upper filter housing (1) at the position corresponding to the installation window (11).

3. The hydraulic oil filtration and purification device for a filter press according to claim 1, characterized in that, The lower filter housing (2) is provided with a slow-flow core (22) inside, which is made of water-absorbing material.

4. The hydraulic oil filtration and purification device for a filter press according to claim 2, characterized in that, One end of the filter chamber (3) is detachably connected to a tail plate (34), and a positioning hole (35) is provided on the surface of the tail plate (34). The tail plate (34) is sleeved on the surface of the positioning column (12) through the positioning hole (35). The other end of the filter chamber (3) is provided with an end plate (36).

5. The hydraulic oil filtration and purification device for a filter press according to claim 4, characterized in that, A transition plate (37) is provided between the end plate (36) and the filter chamber (3). The transition plate (37) is inserted into the interior of the mounting window (11). A sealing gasket (38) is fitted on the surface of the transition plate (37). The sealing gasket (38) is in contact with the end plate (36).

6. The hydraulic oil filtration and purification device for a filter press according to claim 1, characterized in that, A bearing seat (42) is fixedly installed on the top of the fixed tube (4). A control lever (43) is inserted into the inside of the fixed tube (4). The control lever (43) is rotatably connected to the fixed tube (4) through the bearing seat (42). A handle (44) is fixedly installed on the top of the control lever (43) after it extends to the outside of the fixed tube (4). A threaded rod (45) integrally formed with the control lever (43) is provided at the end of the control lever (43) away from the handle (44). A guide block (46) is fixedly provided on the side of the fixed tube (4).

7. The hydraulic oil filtration and purification device for a filter press according to claim 6, characterized in that, The connecting seat (32) is connected to the interior of the filter chamber (3), and the surface of the connecting seat (32) is provided with a plug groove (33).

8. The hydraulic oil filtration and purification device for a filter press according to claim 7, characterized in that, The connecting pipe (5) is inserted into the inside of the insertion slot (33). A guide groove (51) is provided on the surface of the connecting pipe (5). The guide block (46) is slidably disposed inside the guide groove (51). A plunger (52) is provided inside the connecting pipe (5). A threaded groove (53) is provided on the surface of the plunger (52). The threaded rod (45) is screwed into the inside of the threaded groove (53). The threaded groove (53) is used to seal the fixed pipe (4). A connecting column (54) is fixedly connected between the threaded groove (53) and the inner wall of the connecting pipe (5).

9. The hydraulic oil filtration and purification device for a filter press according to claim 1, characterized in that, The oil inlet pipe (41) is located at one end of the fixed pipe (4) outside the upper filter housing (1).

10. A hydraulic oil filtration and purification device for a filter press according to claim 9, characterized in that, A flow sensor is installed inside the bypass pipe (6). The bypass pipe (6) is located at one end of the fixed pipe (4) inside the upper filter housing (1). A connecting housing (61) connects the bypass pipe (6) and the fixed pipe (4). A partition (62) is fixedly installed inside the connecting housing (61). A flow guide hole (63) is opened on the surface of the partition (62). A blocking plate (64) is provided on the side of the partition (62) away from the fixed pipe (4). The blocking plate (64) is used to block the flow guide hole (63). A telescopic rod (65) is fixedly connected to the surface of the blocking plate (64). The telescopic rod (65) slides through the partition (62). A limiting plate (66) is fixedly connected to the end of the telescopic rod (65) away from the blocking plate (64). A compression spring (67) is provided between the limiting plate (66) and the blocking plate (64).

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