Pre-filtering device of centrifugal oil purifier

Abstract

The utility model discloses a preposed filtering device of a centrifugal oil purifier, which relates to the technical field of filtering devices, and comprises a shell, a filtering plate is fixed at the upper position in the shell, a plurality of groups of obliquely upward filtering holes are formed in the oblique outer wall of the filtering plate, and constraint frames are fixed on the left outer wall and the right outer wall of the shell. Two groups of discharge ports are formed in the left and right inner walls of the shell and located at the top end of the filter plate, and sewage inlets are formed in the positions, corresponding to the discharge ports, of the outer wall of the constraint frame. Oil is filtered through the triangular filter plate, and the oil slides towards the lower position along the triangular filter plate until entering the filter frame in the constraint frame, so that dirt in the oil is prevented from blocking the filter plate, and the filtered oil is filtered through the filter plate and the constraint frame; meanwhile, the condition that the filter plate is taken out to clean dirt after filtering every time is not needed, a certain convenience purpose is achieved, and when dirt needs to be cleaned, only the filter frame in the constraint frame needs to be taken out.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically a pre-filtration device for a centrifugal oil purifier. Background Technology

[0002] Oil is an essential substance for industrial production. However, used oil suffers from decreased cleanliness due to factors such as contact with air, mechanical wear, and water seal leakage during use, failing to meet the operational needs of industrial equipment and resulting in resource waste. To improve resource utilization and reduce production costs, specific equipment is necessary to filter and purify the oil used in production.

[0003] The existing patent (authorization announcement number: CN214972404 U) discloses a pre-filter device for a centrifugal oil purifier. It only requires disassembling and cleaning the filter screen, without disassembling and repairing the booster pump, which greatly shortens the maintenance time, reduces the maintenance intensity, and does not require professional maintenance personnel to operate, thus improving work efficiency.

[0004] However, the above technical solutions still have certain drawbacks. Whenever the device is used in conjunction with the oil purifier to filter the oil, the filter screen needs to be disassembled and cleaned, which increases manpower and material resources. Also, the disc-shaped filter screen is prone to clogging, resulting in low filtration efficiency of the oil, and even requiring the filtration operation to be stopped and the filter screen to be removed for cleaning. Therefore, a centrifugal oil purifier pre-filter device is proposed. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a pre-filter device for a centrifugal oil purifier to solve the technical problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pre-filter device for a centrifugal oil purifier, comprising a housing, a filter plate fixed at the upper part of the housing, multiple sets of upwardly inclined filter holes on the outer wall of the filter plate, a constraint frame fixed on the left and right outer walls of the housing, two sets of discharge outlets on the left and right inner walls of the housing at the top of the filter plate, a sludge inlet on the outer wall of the constraint frame corresponding to the discharge outlet, a sealing plate slidably disposed within the constraint frame, a filter frame disposed below the sealing plate, and two sets of connecting rods fixed to the bottom end of the sealing plate on the top edge of the filter frame.

[0007] As a preferred technical solution of the pre-filter device for a centrifugal oil purifier according to the present invention, the bottom end of the outer shell is detachably connected to a detachable frame by bolts, and a honeycomb filter layer is assembled inside the detachable frame.

[0008] As a preferred technical solution of the pre-filter device for a centrifugal oil purifier according to the present invention, multiple sets of filter holes opened on the inclined surface of the filter holes are distributed in a rectangular array, and filter plates are provided inside the inclined surface of the filter holes.

[0009] As a preferred technical solution of the pre-filter device for a centrifugal oil purifier according to this utility model, the outer wall of the sealing plate is inlaid with a rubber pad, and the top of the constraint frame is fixed with a handle.

[0010] As a preferred technical solution of the pre-filter device for a centrifugal oil purifier according to this utility model, two sets of return pipes are connected to the outer wall of the constraint frame near the bottom, and the end of each set of return pipes extends into the outer shell.

[0011] As a preferred technical solution of the pre-filter device for a centrifugal oil purifier according to this utility model, the bottom plate of the filter frame is convex in the middle.

[0012] As a preferred technical solution of the pre-filter device for a centrifugal oil purifier according to this utility model, the constraint frame is fixed to the outer wall of the shell with bolts, and a matching channel is opened at the contact position between the outer wall of the shell and the return pipe.

[0013] In summary, the present invention has the following main advantages:

[0014] This invention uses a triangular filter plate to filter oil, allowing the oil to slide downwards along the plate until it enters the filter frame within the constraint frame. This prevents contaminants in the oil from clogging the filter plate. The filtered oil completes its filtration process by passing through the filter plate and constraint frame. Furthermore, it eliminates the need to remove the filter plate after each filtration to clean contaminants, providing convenience. When cleaning is required, the filter frame within the constraint frame can be removed. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional sectional view of the present invention;

[0017] Figure 3 This is a three-dimensional sectional view of the filter plate of this utility model;

[0018] Figure 4 This is an unfolded structural diagram of the constraint frame of this utility model;

[0019] Figure 5 This is a side sectional view of the sealing plate and filter frame of this utility model.

[0020] In the diagram: 100, outer casing; 101, outlet.

[0021] 110. Detachable frame; 111. Honeycomb filter layer; 120. Constraint frame; 121. Sewage inlet; 122. Return pipe; 130. Filter plate; 131. Filter hole; 140. Sealing plate; 141. Connecting rod; 142. Filter frame. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] The embodiments of this utility model will be described below based on its overall structure.

[0024] A pre-filter device for a centrifugal oil purifier, such as Figures 1 to 5 As shown, the device includes an outer shell 100, a filter plate 130 fixed at the upper part of the outer shell 100, multiple sets of upwardly inclined filter holes 131 opened on the inclined outer wall of the filter plate 130, a constraint frame 120 fixed on the left and right outer walls of the outer shell 100, two sets of outlet ports 101 opened on the left and right inner walls of the outer shell 100 at the top of the filter plate 130, a sewage inlet 121 opened on the outer wall of the constraint frame 120 at the corresponding position of the outlet ports 101, a sealing plate 140 slidably installed inside the constraint frame 120, a filter frame 142 installed below the sealing plate 140, and two sets of connecting rods 141 fixed to the bottom end of the sealing plate 140 at the top edge of the filter frame 142.

[0025] Two sets of return pipes 122 are connected to the outer wall of the constraint frame 120 near the bottom, and the end of each set of return pipes 122 extends into the outer shell 100.

[0026] When oil enters the housing 100, it first contacts the filter plate 130 and flows to both sides along the inclined filter plate 130. This causes impurities in the oil to flow downwards along the inclined filter plate 130. The oil then passes through the filter holes 131 and is discharged downwards, where it is filtered again by the honeycomb filter layer 111, thus achieving the purpose of oil filtration. As more oil enters, it exerts an inclined thrust on the impurities, keeping them at the lowest point of the filter plate 130 and ensuring that the filter holes 131 are not blocked. Once filtration is complete... Then, an upward force is applied to the two sets of sealing plates 140. It is worth noting that the sealing plates 140 should not be completely removed from the constraint frame 120 at this time. The bottom of the sealing plates 140 should be higher than the sewage inlet 121. The oil and dirt stored at the lowest point of the filter plate 130 will enter the constraint frame 120 and then enter the filter frame 142 for final filtration. The oil comes into contact with the inside of the constraint frame 120 through the filter frame 142 and will enter the outer shell 100 again along the return pipe 122. The oil will then be filtered through the honeycomb filter layer 111.

[0027] Once the oil at the lowest point of the filter plate 130 enters the constraint frame 120, the sealing plate 140 can be lowered and restored, allowing the oil in the filter frame 142 to complete filtration. This eliminates the need to disassemble the filter plate 130 after each use, further reducing the manpower and material resources required for the device.

[0028] Please refer to this carefully. Figure 1 and Figure 2 The bottom of the outer shell 100 is detachably connected to a detachable frame 110 by bolts, and a honeycomb filter layer 111 is installed inside the detachable frame 110.

[0029] It allows for easy disassembly and replacement of the honeycomb filter layer 111 in the later stages, ensuring that the device provides high-quality oil filtration.

[0030] Please refer to this carefully. Figure 2 and Figure 3 Multiple sets of filter holes 131 are arranged in a rectangular array on the inclined surface of the filter hole 131, and a filter plate is provided inside the inclined surface of the filter hole 131.

[0031] Multiple sets of filter holes 131 are used to ensure the efficiency of oil flow while preventing tiny contaminants from entering and causing blockages.

[0032] Please refer to this carefully. Figure 1 The outer wall of the sealing plate 140 is inlaid with a rubber pad, and the top of the constraint frame 120 is fixed with a handle.

[0033] The rubber gasket increases the seal between the two to prevent oil from overflowing during filtration, and the handle makes it easy to apply external force to the sealing plate 140 manually.

[0034] Please refer to this carefully. Figure 5 The bottom plate of filter frame 142 has a central convex shape.

[0035] This causes the contaminants entering the filter frame 142 to flow to both sides, ensuring that the raised parts are available for oil to pass through.

[0036] Please refer to this carefully. Figure 1 The constraint frame 120 is fixed to the outer wall of the outer shell 100 with bolts, and a matching channel is opened at the contact position between the outer wall of the outer shell 100 and the return pipe 122.

[0037] This allows for easy removal of the constraint frame 120 to clean the internal grease and grime, ensuring the device can be used for a long time.

[0038] During use, the oil enters the housing 100 and first contacts the filter plate 130. It then flows to both sides along the inclined filter plate 130, causing contaminants in the oil to flow downwards. The oil then passes through the filter holes 131 and is discharged downwards, where it is filtered again by the honeycomb filter layer 111, achieving the purpose of oil filtration. As more oil enters, it exerts an inclined thrust, ensuring that the contaminants remain at the lowest point of the filter plate 130, preventing clogging of the filter holes 131. After completion, apply an upward force to the two sets of sealing plates 140. It is worth noting that the sealing plates 140 should not be completely removed from the constraint frame 120 at this time. Just make sure that the bottom of the sealing plates 140 is higher than the sewage inlet 121. The oil and dirt stored at the lowest point of the filter plate 130 will enter the constraint frame 120 and then enter the filter frame 142 for final filtration. The oil comes into contact with the inside of the constraint frame 120 through the filter frame 142 and will enter the outer shell 100 again along the return pipe 122. It will then be filtered through the honeycomb filter layer 111.

[0039] Once the oil at the lowest point of the filter plate 130 enters the constraint frame 120, the sealing plate 140 can be lowered and restored, allowing the oil in the filter frame 142 to complete filtration. This eliminates the need to disassemble the filter plate 130 after each use, further reducing the manpower and material resources required for the device. Any parts not covered in this device are the same as or can be implemented using existing technologies.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A pre-filter device for a centrifugal oil purifier, comprising a housing (100), characterized in that: A filter plate (130) is fixed at the upper part of the outer shell (100). The outer wall of the filter plate (130) has multiple sets of upwardly inclined filter holes (131). A constraint frame (120) is fixed on the left and right outer walls of the outer shell (100). Two sets of outlets (101) are opened at the top of the filter plate (130) on the left and right inner walls of the outer shell (100). A sewage inlet (121) is opened at the corresponding position of the outlet (101) on the outer wall of the constraint frame (120). A sealing plate (140) is slidably arranged inside the constraint frame (120). A filter frame (142) is arranged below the sealing plate (140). Two sets of connecting rods (141) are provided at the top edge of the filter frame (142) and fixed to the bottom end of the sealing plate (140).

2. The pre-filter device for a centrifugal oil purifier according to claim 1, characterized in that: The bottom end of the outer shell (100) is detachably connected to a detachable frame (110) by bolts, and a honeycomb filter layer (111) is installed inside the detachable frame (110).

3. The pre-filter device for a centrifugal oil purifier according to claim 1, characterized in that: The multiple sets of filter holes (131) opened on the inclined surface of the filter hole (131) are distributed in a rectangular array, and the inclined surface of the filter hole (131) is provided with a filter plate inside the filter hole (131).

4. The pre-filter device for a centrifugal oil purifier according to claim 1, characterized in that: The outer wall of the sealing plate (140) is inlaid with a rubber pad, and the top of the constraint frame (120) is fixed with a handle.

5. The pre-filter device for a centrifugal oil purifier according to claim 1, characterized in that: Two sets of return pipes (122) are connected to the outer wall of the constraint frame (120) near the bottom, and the end of each set of return pipes (122) extends into the outer shell (100).

6. The pre-filter device for a centrifugal oil purifier according to claim 1, characterized in that: The bottom plate of the filter frame (142) is convex in the middle.

7. A pre-filter device for a centrifugal oil purifier according to claim 5, characterized in that: The constraint frame (120) is fixed to the outer wall of the outer shell (100) with bolts, and a matching channel is opened at the contact position between the outer wall of the outer shell (100) and the return pipe (122).

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