Detachable filter element of vacuum pump oil mist filter

Abstract

The utility model provides a detachable filter element of a vacuum pump oil mist filter, and relates to the technical field of filter elements, the detachable filter element comprises an external fixing pipe, a circulation groove is arranged in the middle of the inner bottom surface of the external fixing pipe, four groups of clamping blocks are arranged on the inner bottom surface of the external fixing pipe, a rubber ring is movably connected in the circulation groove, and the rubber ring is provided with a through hole. A connecting ring A is arranged at the top of the rubber ring, the design of the rubber ring, clamping grooves and clamping blocks is adopted, during installation, the rubber ring is aligned with the circulation groove to be inserted into the circulation groove, the connecting position of the connecting ring A and the circulation groove is sealed, the triangular clamping groove in the bottom of the connecting ring A makes contact with the four sets of clamping blocks, and the clamping blocks elastically expand outwards under the action of the inclined faces; during disassembly, the connecting ring A is pulled through the convenient handle, the clamping blocks expand outwards again to be separated from the clamping grooves, then separation can be achieved, tools are not needed in the whole process, self-locking and releasing are achieved through elastic deformation, and operation is easy, convenient and reliable.

Description

Technical Field

[0001] This utility model relates to the field of filter element technology, and in particular to a detachable filter element for a vacuum pump oil mist filter. Background Technology

[0002] According to Chinese Patent No. CN209092952U, an oil mist separation filter element structure for a vacuum pump belongs to the field of vacuum equipment technology. It includes a filter element support frame, with a filter element cavity having openings at both ends; a filter material surrounding and covering the outer surface of the filter element support frame; an exhaust filter element front end cover, which covers one end of the filter element support frame and the filter material; and an exhaust filter element rear end cover, which covers the other end of the filter element support frame and the filter material. The key feature is that the exhaust filter element front end cover has an opening in the middle that communicates with the filter element cavity. A guide plate is formed in the middle of this opening, dividing it into upper and lower cavities. The guide plate extends towards the filter element cavity and has a lower baffle at its end that slopes downwards. An upper baffle is formed obliquely upwards above the middle of the guide plate. This effectively reduces resonance noise; the structure is simple and the cost is low.

[0003] However, the above-mentioned device has the following problems when in use: the complex assembly method makes it difficult to quickly disassemble and install the filter element. In actual use, whether it is equipment maintenance, filter element replacement or daily inspection, a lot of time and effort are required to operate, which greatly increases labor and time costs. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a detachable filter element for a vacuum pump oil mist filter.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: including an external fixing tube, characterized in that: a flow groove is provided in the middle of the inner bottom surface of the external fixing tube, four sets of locking blocks are provided on the inner bottom surface of the external fixing tube, a rubber ring is movably connected inside the flow groove, and an A connecting ring is provided on the top of the rubber ring.

[0006] Preferably, a filter element assembly is provided on the top of the A connecting ring, and four sets of slots are provided on the top and bottom of the surface of the A connecting ring, and the slots and the blocks are engaged with each other.

[0007] Preferably, the filter element assembly includes a filter element body, a coarse layer, a high-efficiency layer, and an adsorption layer. The bottom of the filter element body, the coarse layer, the high-efficiency layer, and the adsorption layer are all disposed on top of the A connecting ring. The interior of the adsorption layer is connected to the outer surface of the filter element body.

[0008] Preferably, the inner wall of the high-efficiency layer is connected to the outer surface of the adsorption layer, and the inner wall of the coarse-efficiency layer is connected to the outer surface of the high-efficiency layer.

[0009] Preferably, a B-connecting ring is provided on the top of the filter element, the coarse layer, the high-efficiency layer and the adsorption layer.

[0010] Preferably, the top of the B connecting ring is provided with a convenient handle.

[0011] Preferably, the top of the convenient handle is provided with an anti-slip sleeve, and the surface of the anti-slip sleeve is provided with a textured surface.

[0012] Beneficial effects

[0013] This invention employs a design of rubber rings, slots, and blocks. During installation, the rubber ring is aligned with the flow groove and inserted, and the connection between the A connecting ring and the flow groove is sealed. The triangular slot at the bottom of the A connecting ring contacts four sets of blocks. Under the action of the inclined plane, the blocks elastically expand outward until the connecting ring reaches the preset position, at which point the blocks spring back and engage with the top slot to complete the limiting. During disassembly, the A connecting ring is pulled by the convenient handle, and the blocks expand outward again to disengage from the slots, thus separating the components. The entire process requires no tools and relies on elastic deformation to achieve self-locking and release, making the operation simple and reliable.

[0014] In this invention, a filter element assembly is used. The coarse layer first intercepts large oil droplets and impurities, the high-efficiency layer further captures submicron-sized oil mist particles, and the adsorption layer deeply removes organic vapors and odor molecules. This multi-stage synergistic filtration structure significantly improves the overall purification efficiency of the filter element, while also meeting the requirements for particulate matter interception. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance of the present utility model;

[0016] Figure 2 This is a schematic diagram of the interior of the external fixing tube of this utility model;

[0017] Figure 3 This is a schematic diagram of the card slot, A connecting ring, and B connecting ring of this utility model;

[0018] Figure 4 This is a schematic diagram of the filter element assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the card block of this utility model.

[0020] Legend:

[0021] 1. External fixing tube; 2. Flow channel; 3. Locking block; 4. Rubber ring; 5. A connecting ring; 6. Filter element assembly; 601. Filter element body; 602. Coarse layer; 603. High efficiency layer; 604. Adsorption layer; 7. B connecting ring; 8. Convenient handle; 9. Locking slot. Detailed Implementation

[0022] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0025] Reference Figure 1-5The system includes an external fixing tube 1, which is fixed inside the vacuum pump oil mist filter. A flow groove 2 is formed in the middle of the inner bottom surface of the external fixing tube 1, providing a channel for oil mist flow. Four sets of locking blocks 3 are provided on the inner bottom surface of the external fixing tube 1. A rubber ring 4 is movably connected inside the flow groove 2. An A-connecting ring 5 is provided on the top of the rubber ring 4. The rubber ring 4 has good sealing performance, effectively preventing oil mist leakage. The A-connecting ring 5 is connected to the top of the rubber ring 4, and plays a crucial role in the entire filtration system. A filter element assembly 6 is located on the top of the A-connecting ring 5. Four sets of locking slots 9 are provided on the top and bottom of the surface of the A-connecting ring 5, precisely engaging with the locking blocks 3 on the inner bottom surface of the external fixing tube 1. Both the locking slots 9 and the locking blocks 3 are triangular in shape, and their interlocking design not only facilitates installation but also ensures the safety of the filter element assembly 6. Stable and wobbly, the filter element assembly 6 includes a filter body 601, a coarse layer 602, a high-efficiency layer 603, and an adsorption layer 604. The bottoms of the filter body 601, coarse layer 602, high-efficiency layer 603, and adsorption layer 604 are all located on top of the A connecting ring 5. The interior of the adsorption layer 604 is connected to the outer surface of the filter body 601, the inner wall of the high-efficiency layer 603 is connected to the outer surface of the adsorption layer 604, and the inner wall of the coarse layer 602 is connected to the outer surface of the high-efficiency layer 603. A B connecting ring 7 is located on top of the filter body 601, coarse layer 602, high-efficiency layer 603, and adsorption layer 604. A convenient handle 8 is located on top of the B connecting ring 7, and an anti-slip sleeve is located on top of the convenient handle 8. The surface of the anti-slip sleeve has a textured surface, making the convenient handle 8 easy to use for the filter element assembly 6. To facilitate disassembly and installation, and to enhance grip comfort and anti-slip performance, the top of the convenient handle 8 is fitted with an anti-slip sleeve. The carefully designed concave and convex texture on its surface ensures that operators can grip it stably under various working conditions. Specific Implementation Example 2:

[0027] A detachable filter element for a vacuum pump oil mist filter, based on the basic structure in Specific Embodiment 1, further discloses the following: the adsorption layer 604 is made of activated carbon fiber felt tightly attached to the outer surface of the filter element body 601. The activated carbon fiber felt typically has a thickness of 2-10 mm and a filtration density of 100-300 g / m², mainly responsible for adsorbing harmful substances in the oil mist. The high-efficiency layer 603 is made of glass fiber filter paper, the inner wall of which is connected to the outer surface of the adsorption layer 604. The glass fiber filter paper typically has a thickness of 0.3-1.2 mm and a filtration density of 0.5-5 μm, capable of efficiently filtering small particles. The coarse-efficiency layer 602 is made of polyester non-woven fabric, the inner wall of which is connected to the outer surface of the high-efficiency layer 603. The polyester non-woven fabric typically has a thickness of 0.5-3 mm and a filtration density of 10-50 μm, capable of intercepting larger particulate impurities.

[0028] In summary:

[0029] 1. The design adopts rubber ring 4, slot 9 and block 3. During installation, rubber ring 4 is inserted into the flow groove 2 and the connection between A connecting ring 5 and flow groove 2 is sealed. The triangular slot 9 at the bottom of A connecting ring 5 contacts the four blocks 3. Under the action of the inclined plane, the blocks 3 expand outward elastically until A connecting ring 5 reaches the preset position. Then the blocks 3 rebound and engage with the top slot 9 to complete the limit. When disassembling, A connecting ring 5 is pulled up by the convenient handle 8. The blocks 3 expand outward again and disengage from the slot 9 to separate. The whole process does not require tools. Self-locking and release are achieved by elastic deformation. The operation is simple and reliable.

[0030] 2. The filter element assembly 6 is designed with a coarse layer 602 to first intercept large oil droplets and impurities, a high-efficiency layer 603 to further capture submicron-sized oil mist particles, and an adsorption layer 604 to deeply remove organic vapors and odor molecules. This multi-stage synergistic filtration structure significantly improves the overall purification efficiency of the filter element, while also meeting the requirements for particulate matter interception.

[0031] 3. In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] 4. The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A detachable filter element for a vacuum pump oil mist filter, comprising an external fixing tube (1), characterized in that: A flow groove (2) is provided in the middle of the inner bottom surface of the external fixed tube (1). Four sets of locking blocks (3) are provided on the inner bottom surface of the external fixed tube (1). A rubber ring (4) is movably connected inside the flow groove (2). An A connecting ring (5) is provided on the top of the rubber ring (4). A filter element assembly (6) is provided on the top of the A connecting ring (5). The filter element assembly (6) includes a filter element body (601), a coarse layer (602), a high-efficiency layer (603), and an adsorption layer (604). The bottoms of the filter element body (601), the coarse layer (602), the high-efficiency layer (603), and the adsorption layer (604) are all located on the top of the A connecting ring (5). The interior of the adsorption layer (604) is connected to the outer surface of the filter element body (601).

2. The detachable filter element of a vacuum pump oil mist filter according to claim 1, characterized in that: The top and bottom of the surface of the A connecting ring (5) are provided with four sets of slots (9), and the slots (9) and the block (3) are engaged with each other.

3. The detachable filter element of a vacuum pump oil mist filter according to claim 1, characterized in that: The inner wall of the high-efficiency layer (603) is connected to the outer surface of the adsorption layer (604).

4. The detachable filter element of a vacuum pump oil mist filter according to claim 3, characterized in that: The inner wall of the coarse layer (602) is connected to the outer surface of the high-efficiency layer (603).

5. The detachable filter element of a vacuum pump oil mist filter according to claim 4, characterized in that: A B-connecting ring (7) is provided on the top of the filter element (601), coarse layer (602), high-efficiency layer (603) and adsorption layer (604).

6. The detachable filter element of a vacuum pump oil mist filter according to claim 5, characterized in that: The top of the B connecting ring (7) is provided with a convenient handle (8).

7. The detachable filter element of a vacuum pump oil mist filter according to claim 6, characterized in that: The top of the convenient handle (8) is provided with an anti-slip sleeve, and the surface of the anti-slip sleeve is provided with a textured surface.

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