A high-efficiency deodorizing and breathable cap based on graphene

Abstract

This utility model relates to the field of mechanical parts technology, specifically to a graphene-based high-efficiency deodorizing and breathable cap. The graphene-based high-efficiency deodorizing and breathable cap of this application includes a base, on which a filter element assembly is mounted. The filter element assembly includes a shell, inside which is a porous core. The porous structure of the core is filled with and loaded with graphene powder. The top and bottom openings of the shell are fixedly covered with sealing mesh to prevent the graphene powder from escaping while allowing gas to pass through. This achieves the absorption of lubricating oil volatiles by the graphene powder, maintaining clean air in the workspace, protecting the health of workers and the safety of equipment, and effectively solving the problem of lubricating oil volatiles escaping into the air through the breathable cap.

Description

Technical Field

[0001] This utility model relates to the field of mechanical parts technology, specifically to a high-efficiency deodorizing and breathable cap based on graphene. Background Technology

[0002] During operation, internal lubricating oil, vacuum pump oil, or hydraulic oil evaporates due to high temperatures generated by gear friction, leading to increased internal air pressure. To prevent damage from excessive internal pressure, vent caps are typically used to maintain pressure balance and prevent external dust from entering. However, this design has a significant flaw: lubricating oil evaporates into the air through the vent cap, causing air pollution, producing odors, and potentially harming human health. Furthermore, these volatile lubricating oil residues, after cooling in the air, adhere to the machinery and, after prolonged oxidation, form yellow stains on the surface, commonly known as "yellow stains." The key issue is that existing vent caps are primarily composed of an outer metal shell and an internal perforated foam filter. While they allow the equipment to breathe and provide some dust protection, they fail to effectively prevent lubricating oil from evaporating into the external environment.

[0003] For example, patent number CN206072316U discloses a vent cap for a speed reducer, aiming to solve the problem of lubricating oil spraying out from the vent hole when the vent cap is installed at the oil inlet of the speed reducer. The key technical points are: a speed reducer vent cap includes a vent cap body, the vent cap body having a through hole communicating with the outside along its axial direction, and a vent pipe provided on the side of the vent cap body facing the inside of the speed reducer. One end of the vent pipe facing the inside of the speed reducer is closed, and the other end is connected to the through hole. Several vent holes are provided on the side wall of the vent pipe. This utility model's speed reducer vent cap, by providing a through hole communicating with the outside at the oil inlet of the speed reducer, and a vent pipe on the side facing the inside of the speed reducer that communicates with the through hole and has vent holes on its side wall, achieves a balance between the atmospheric pressure inside and outside the speed reducer, and also prevents lubricating oil from spraying out through the vent holes during speed reducer operation.

[0004] This solution addresses the issue of lubricating oil spraying out from the vent when the vent cap is installed at the gearbox's oil filler port. However, it does not resolve the problem of lubricating oil volatiles escaping into the environment through the vent cap. Utility Model Content

[0005] The purpose of this invention is to at least solve one of the technical problems existing in the prior art and to provide a graphene-based high-efficiency deodorizing and breathable cap.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a graphene-based high-efficiency deodorizing and breathable cap, comprising a base, a filter element assembly on the base, the filter element assembly comprising a shell, a porous core inside the shell, the porous structure of the core being filled and loaded with graphene powder; the top and bottom openings of the shell are both fixedly covered with sealing mesh to prevent the graphene powder from escaping while allowing gas to pass through.

[0007] Furthermore, a metal protective cover is fitted over the filter element assembly, the diameter of which is larger than the diameter of the housing, so that an annular airflow channel is formed between the two.

[0008] Furthermore, the core is composed of two or more layers of porous material stacked in parallel with each other, and the pores of each layer of porous material are filled with and loaded with the graphene powder.

[0009] Furthermore, the porous material layer includes one or more of the following: open-cell polyurethane foam core, melamine foam core, activated carbon fiber felt, and polypropylene fiber felt.

[0010] Furthermore, the base is provided with several vent holes for gas to pass through.

[0011] Furthermore, a connector is detachably connected to the bottom of the base via threads.

[0012] Furthermore, the connector is provided with a threaded port that matches the equipment's oil inlet.

[0013] Furthermore, a sealing gasket, which is a rubber sealing gasket, is embedded at the connection between the connector and the equipment oil port.

[0014] Furthermore, the sealing mesh is a stainless steel filter.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. This application provides a filter element assembly on the base, the filter element assembly including a housing, the housing having a porous core inside, the porous structure of the core being filled and loaded with graphene powder; the top and bottom openings of the housing are fixedly covered with sealing mesh to prevent the graphene powder from escaping while allowing gas to pass through, thereby balancing the atmospheric pressure inside and outside the reducer, preventing external dust from entering, and preventing lubricating oil volatiles from escaping to the outside through the vent holes during reducer operation.

[0017] 2. This application uses highly efficient adsorption-type graphene as the main functional component of the inner core of the vent cap, and uses open-cell foam, high-molecular microfiber, etc. as auxiliary materials for the core to adsorb volatile gases from lubricating oil, maintain clean air in the workspace, and protect the health of workers and the safety of equipment. This effectively solves the problem of lubricating oil volatiles escaping into the air through the vent cap. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a graphene-based high-efficiency deodorizing and breathable cap in a preferred embodiment of the present invention.

[0019] Reference numerals: 1. Base; 2. Housing; 3. Core; 4. Sealing mesh; 5. Metal protective cover; 6. Vent hole; 7. Connector. Detailed Implementation

[0020] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0021] Reference Figure 1 As shown in the preferred embodiment of this utility model, a graphene-based high-efficiency deodorizing and breathable cap includes a base 1, on which a filter element assembly is provided. The filter element assembly includes a shell 2, inside which a porous core 3 is provided. The porous structure of the core 3 is filled and loaded with graphene powder. The top and bottom openings of the shell 2 are both fixedly covered with sealing mesh 4 to prevent the graphene powder from escaping while allowing gas to pass through. This achieves the adsorption of lubricating oil volatile gases by the graphene powder, maintaining the cleanliness of the air in the workspace, protecting the health of the staff and the safety of the equipment, and effectively solving the problem of lubricating oil volatiles escaping into the air through the breathable cap.

[0022] As a preferred embodiment of this utility model, it may also have the following additional technical features: a metal protective cover 5 is provided on the outside of the filter element assembly, and the diameter of the metal protective cover 5 is larger than the diameter of the housing 2, so that an annular airflow channel is formed between the two.

[0023] In this embodiment, the core 3 is composed of two or more parallel layers of porous material. Each layer of porous material is filled with and loaded with graphene powder. These porous material layers include one or more of open-cell polyurethane foam cores, melamine foam cores, activated carbon fiber felt, and polypropylene fiber felt. Thus, highly efficient adsorption-type graphene is used as the main functional component of the breathable cap's inner core, and open-cell foam and high-molecular-weight microfibers are used as auxiliary materials to adsorb volatile gases from lubricating oil, maintain clean air in the workspace, and protect the health of workers and the safety of equipment.

[0024] In this embodiment, the base 1 is provided with a plurality of vent holes 6 for gas to pass through. This can balance the atmospheric pressure inside and outside the reducer, prevent external dust from entering, and prevent lubricating oil volatiles from escaping to the outside through the vent holes during the operation of the reducer.

[0025] In this embodiment, a connector 7 is detachably connected to the bottom of the base 1 via threads. The connector 7 has a threaded opening that matches the oil inlet of the equipment. This facilitates quick assembly by the user.

[0026] In this embodiment, a sealing gasket, which is a rubber gasket, is embedded at the connection between the connector 7 and the equipment oil port. This prevents lubricating oil volatiles from escaping into the air through the vent cap.

[0027] In this embodiment, the sealing mesh 4 is a stainless steel filter mesh. This prevents graphene powder from escaping while allowing gas to pass through.

[0028] The following is a description using specific examples.

[0029] Example 1

[0030] The manufacturing method of this graphene-based high-efficiency deodorizing and breathable cap includes the following steps:

[0031] Step 1: Mix pretreated graphene oxide with hexadecyl methacrylate, hydroxyethyl methacrylate, and toluene in a certain ratio (50:50:10:200), ultrasonically disperse for 30 min, add initiator AIBN (0.5-2), reflux at 60-80℃ for 5-10 h, centrifuge and wash with anhydrous ethanol, and dry for later use to obtain highly efficient adsorption graphene.

[0032] Step 2: Prepare a metal protective cover (110mm in diameter, 60mm in height), a shell (70mm in diameter, 30mm in height), a metal base (75mm in diameter, 5mm in height), various sealing gaskets, and a connector for connecting the oil inlet of the reducer below. Prepare 20-50g of high-efficiency adsorption graphene. The auxiliary material is open-cell foam (40ppi, 3mm thick).

[0033] Step 3, sample housing processing: fix the filter element housing onto the vent cap base;

[0034] Step 4, filling with high-efficiency adsorption graphene: Weigh 5g of high-efficiency adsorption graphene and fill it into the open-cell foam;

[0035] Step 5: Place the open-cell foam filled with high-efficiency adsorption graphene into the shell, with a total of 5 layers; among them, polypropylene fiber felt is placed at the top and bottom to prevent powder leakage;

[0036] Step 6: Seal the top of the housing with a stainless steel filter screen;

[0037] Step 7: Install the filter element assembly inside the metal protective cover, and assemble the connector below that connects to the oil inlet of the reducer with the vent cap base to obtain the finished product;

[0038] Using a reducer with a 20L lubricating oil capacity as the test object, the vent cap in this implementation case operated under normal conditions for 90 days. The equipment showed no abnormal temperature rise, the oil seal remained intact, there was no odor in the room, and the equipment surface was free of oil stains. The air permeability of the vent cap was tested to be 98L / min, indicating good air permeability.

[0039] In the gas pollution test, a comparison was made between a breathable cap with added high-efficiency adsorption graphene and a breathable cap without added high-efficiency adsorption graphene. The results showed that the addition of high-efficiency adsorption graphene has a highly effective purification effect on the volatilized PM2.5 and VOC gases.

[0040]

[0041] Comparison Case 1:

[0042] Step 1: Prepare a metal protective cover (110mm in diameter, 60mm in height), a housing (70mm in diameter, 30mm in height), a metal base (75mm in diameter, 5mm in height), various sealing gaskets, and a connector for connecting the oil inlet of the reducer at the bottom. The auxiliary material is open-cell foam (40ppi, 3mm thick).

[0043] Step 2: Sample filter cartridge housing processing, fixing the filter cartridge housing onto the vent cap base;

[0044] Step 3: Do not fill with highly efficient adsorption-type graphene;

[0045] Step 4: Place the porous foam into the filter cartridge housing, with a total of 5 layers;

[0046] Step 5: Seal the top of the filter cartridge housing with a stainless steel filter screen;

[0047] Step six: Install the filter element inside the metal housing, and assemble the connector at the bottom that connects to the oil inlet of the reducer with the vent cap base to obtain the finished product.

[0048] Using a 20L lubricating oil reducer as the test subject, the vent cap in this implementation case produced a smell similar to car tires or asphalt after 3 days of normal operation. After 6 days of operation, oil stains appeared on the surface of the equipment.

[0049] In gas pollution tests, the breathable caps without added highly efficient adsorption graphene showed very poor purification effects on PM2.5 and VOC gases emitted from inside.

[0050]

[0051] Therefore, the lubricating oil inside the reducer generates volatile gases due to the high temperature of gear friction, and the internal air expands. When these mixed gases pass through the deodorizing and environmentally friendly reducer vent cap of this application, the volatile substances in the lubricating oil can be quickly adsorbed, allowing only the heated and expanded air to escape to the outside. This application can also be used in the vent holes of the oil chambers of vacuum pumps, hydraulic presses, air compressors, etc., significantly reducing odors volatilized in the air. It can also adsorb substances such as xylene, gasoline, diesel, kerosene, vacuum pump oil, and hydraulic oil, and can be used as a VOC filtration device.

[0052] Without causing conflict, those skilled in the art can freely combine and use the above-mentioned additional technical features.

[0053] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A graphene-based high-efficiency deodorizing and breathable cap, characterized in that: The device includes a base on which a filter element assembly is mounted. The filter element assembly includes a housing and a porous core inside the housing. The porous structure of the core is filled with and loaded with graphene powder. The top and bottom openings of the housing are fixedly covered with sealing mesh to prevent the graphene powder from escaping while allowing gas to pass through.

2. The graphene-based high-efficiency deodorizing and breathable cap according to claim 1, characterized in that: The filter element assembly is fitted with a metal protective cover, the diameter of which is larger than the diameter of the housing, so that an annular airflow channel is formed between the two.

3. The graphene-based high-efficiency deodorizing and breathable cap according to claim 1, characterized in that: The core is composed of two or more layers of porous material stacked in parallel with each other, and the pores of each layer of porous material are filled with and loaded with the graphene powder.

4. The graphene-based high-efficiency deodorizing and breathable cap according to claim 3, characterized in that: The porous material layer includes one or more of the following: open-cell polyurethane foam core, melamine foam core, activated carbon fiber felt, and polypropylene fiber felt.

5. The graphene-based high-efficiency deodorizing and breathable cap according to claim 1, characterized in that: The base has several vent holes for gas to pass through.

6. The graphene-based high-efficiency deodorizing and breathable cap according to claim 5, characterized in that: A connector is detachably connected to the bottom of the base via threads.

7. The graphene-based high-efficiency deodorizing and breathable cap according to claim 6, characterized in that: The connector is provided with a threaded port that matches the oil inlet of the equipment.

8. The graphene-based high-efficiency deodorizing and breathable cap according to claim 7, characterized in that: A sealing gasket, which is a rubber sealing gasket, is embedded at the connection between the connector and the equipment oil port.

9. The graphene-based high-efficiency deodorizing and breathable cap according to claim 1, characterized in that: The sealing mesh is a stainless steel filter mesh.

Images