Drying and filtering type ventilation cap for speed reduction equipment

Abstract

The drying and filtering type ventilation cap comprises a cylindrical cap body, the upper end of the cap body is detachably connected with an elastic rubber cover, the lower end of the cap body is in threaded connection with an end cover, and a plurality of ventilation holes are formed in the surface of the end cover in the circumferential direction; a nipple head is connected to the center of the lower surface of the end cover and used for being connected with speed reduction equipment; the cap body is filled with a mixture of activated aluminum oxide and allochroic silica gel; and a filter cotton layer is laid between the upper surface of the end cover and the mixture. The rubber honeycomb filter cotton is used for filtering dust, and the cap body is filled with activated aluminum oxide and allochroic silicagel and used for drying gas. When the aerosol passes through the ventilation cap, solid and liquid particles are filtered, so that air entering the speed reducer is kept clean, and finally the lubricating oil of the speed reducer is kept clean.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, and in particular relates to a drying and filtering air permeable cap for speed reducer equipment. Background Art

[0002] The pressure filter is a kind of equipment widely used in industry for solid-liquid separation. The filter is placed in a sealed pressure chamber filled with compressed air of a certain pressure. The suspension to be filtered is fed into the tank of the filter by the feed pump. On the filter disc, a pressure difference is formed with the air-steam separator through the distribution valve. The filtrate is discharged through the filter medium immersed in the suspension, and the solid particles are collected on the filter disc to form a filter cake. As the filter disc rotates, the filter cake is dried and dehydrated before being discharged to the unloading area. It is discharged intermittently by the discharge device.

[0003] During the operation of the pressurized filter, the high-temperature compressed air and the heat generated by the operation of the internal mechanical equipment cause the temperature in the bin to always be 50~70℃, and the slurry solution in the stirring tank continuously evaporates into the air. In addition, due to the intermittent operation of the unloading device in the pressurized bin, the pressurized bin is constantly "inflated and deflated", resulting in a large amount of dust particles filling the pressurized bin, forming an aerosol. During the operation of the pressurized filter, the pressure in the pressurized bin is greater than the pressure inside the reducer, and the external aerosol continuously enters the reducer through the breathable cap, causing the reducer lubricating oil to be contaminated, and eventually causing the reducer to be damaged.

[0004] Reducer is a commonly used equipment in the industrial field, but the grease inside the reducer often deteriorates with use. The main reasons are as follows:

[0005] (1) Oil emulsification

[0006] When water enters the reducer, when there is a certain type of surfactant (such as carboxylic acid derivatives) with both lipophilic and hydrophilic groups in the oil or water, they will associate together at the right temperature and concentration to form a dense monolayer, enclosing the water. A large number of association bodies are evenly dispersed in the oil, forming an oil-in-water emulsion. Emulsification means that the lubricant has deteriorated, and the deterioration of the lubricant will reduce the lubricating effect of the lubricant and aggravate the wear of the internal parts of the reducer.

[0007] (2) Lubricating oil oxidation

[0008] When the grease inside the reducer comes into contact with air, natural oxidation will occur. During long-term high-temperature operation, the oxidation rate will be accelerated. If the reducer is frequently started and stopped, the lubricating oil will also produce more low-temperature sludge deposition due to the low oil temperature, which will promote the deterioration of the lubricating oil. Over time, the inherent oil film characteristics of the lubricating oil will gradually fail, the lubricating performance of the lubricating oil will deteriorate, and the lubricating function of the lubricating oil will even be completely lost.

[0009] (3) Reduction of kinematic viscosity of lubricating oil

[0010] The decrease in kinematic viscosity of lubricating oil is caused by the increase in temperature and pressure. The viscosity change mainly affects the lubrication of mechanical equipment. The temperature of the lubricating equipment increases, and the lubricating oil deteriorates during long-term operation, which is more likely to wear the precision parts of the mechanical equipment, resulting in a decrease in the working performance of the equipment, affecting normal production and failing to bring benefits.

[0011] (4) Impurities in the lubricating oil

[0012] When lubricating oil is contaminated by impurities and dust, it will deteriorate. The deteriorated lubricating oil cannot play the corresponding role of lubrication, cleaning, cooling, rust prevention, etc. During the operation of mechanical equipment, the friction of precision parts will increase and the working performance of the equipment will decrease.

[0013] For the second and third types of problems, these problems can be effectively solved by regularly replacing the reducer lubricating oil and formulating lubrication standards and maintenance standards. For the first and fourth types of problems, there are two possible reasons for these two types of problems: one is improper storage, which causes moisture and dust to enter the lubricating oil; the other is that dust and moisture enter the reducer through other channels during use. For the first case, during the storage of lubricating oil, various protective measures should be taken to prevent dust, moisture and other components from mixing in, and various sealing measures should be taken. Store in a clean and dry environment, and try to avoid adverse environments such as sunlight and high temperature. For the second case, it is difficult to fundamentally change the use environment of the reducer. Utility Model Content

[0014] The utility model provides a dry filtering air permeable cap for speed reducer equipment, which is used for cleaning the air entering into the speed reducer, so that the air entering into the speed reducer is kept clean, and finally the cleanliness of the speed reducer lubricating oil is protected.

[0015] To this end, the utility model adopts the following technical solutions:

[0016] A dry filtering breathable cap for a deceleration device comprises a cylindrical cap body, the upper end of the cap body is detachably connected to an elastic rubber cover, the lower end of the cap body is threadedly connected to an end cap, and a plurality of air holes are circumferentially provided on the surface of the end cap; a threaded head is connected to the center of the lower surface of the end cap, and the threaded head is used to connect the deceleration device; the cap body is filled with a mixture of activated alumina and color-changing silica gel; a filter cotton layer is also laid between the upper surface of the end cap and the mixture.

[0017] The design principle of the utility model is as follows:

[0018] Compared with other forms of breathable caps, this breathable cap has a simple structure and significant effect, and can effectively reduce the dust and moisture entering the reducer. The utility model utilizes the water absorption principle of the desiccant and the filtering performance of the filter cotton, while maintaining the function of the breathable cap. The three are combined together to form a dry filtering breathable cap, such as Figure 1 As shown in the figure (Dry Filter Breathable Cap Structure), the characteristics of dry filtration are utilized to solve the problems of high temperature, humidity and dust in the environment, and ensure the cleanliness of the reducer lubricating oil.

[0019] The beneficial effects of the utility model are:

[0020] The rubber honeycomb filter cotton is used to filter dust, and the cap body is filled with activated alumina and color-changing silica gel for gas drying. When the aerosol passes through the breathable cap, the solid and liquid particles are filtered, so that the air entering the reducer remains clean, and finally protects the cleanliness of the reducer lubricating oil. (1) This device is suitable for gearboxes and reducers surrounded by high temperature, humidity and dust. (2) The desiccant uses color-changing silica gel, which changes from blue to red after absorbing water, which is easy to observe. In addition, these two types of desiccants can be regenerated by heating, with low cost and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the breathable cap of the utility model;

[0022] In the figure: 1-cap body, 2-elastic rubber cover, 3-mixture of activated alumina and color-changing silica gel, 4-end cap, 5-air vent, 6-pair of wires. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments:

[0024] like Figure 1 As shown, a dry filtering breathable cap for a reduction device comprises a cylindrical cap body 1, the upper end of the cap body 1 is detachably connected with an elastic rubber cover 2, the lower end of the cap body 1 is threadedly connected with an end cap 4, a plurality of air holes 5 are provided around the surface of the end cap 4 in an annular direction, and the air holes 5 are used to maintain the balance of air pressure inside and outside the reducer; a thread 6 is connected to the center of the lower surface of the end cap 4, and the thread 6 is used to connect the reduction device; the cap body 1 is filled with a mixture 3 of activated alumina and color-changing silica gel. A rubber honeycomb filter cotton layer is also laid between the upper surface of the end cap 4 and the mixture for filtering dust. When the aerosol passes through the breathable cap, solid and liquid particles are filtered, so that the air entering the reducer remains clean, and finally the cleanliness of the reducer lubricating oil is protected.

[0025] The implementation steps of the utility model are as follows: use a thread plug gauge to measure the threaded holes of the air cap 4 of the top end cover of the reducer; use a tape measure to measure the space distance at the top of the reducer; design and process the dry filter type air cap according to the on-site surveying and mapping dimensions; replace the dry filter type air cap of the reducer; regularly check the color change of the desiccant in the dry filter type air cap, if it changes from blue to red, replace the internal desiccant, and heat the replaced desiccant again for regeneration.

[0026] On-site implementation of the utility model:

[0027] In February 2023, the utility model dry breathable cap was applied to the belt reducer in the pressurized filter cabin of the applicant's mineral processing plant. The internal condition of the reducer was checked by regular disassembly. The final result showed that the reducer had no obvious deterioration of grease after running for 6 consecutive months. Compared with the other 4 belt reducers in the warehouse, this method is simple, effective and economical.

Claims

1. A dry filter breathable cap for a deceleration device, characterized in that: The invention comprises a cylindrical cap body (1), the upper end of the cap body (1) is detachably connected to an elastic rubber cover (2), the lower end of the cap body (1) is threadedly connected to an end cover (4), and a plurality of air holes (5) are provided in a circumferential direction on the surface of the end cover (4); a thread head (6) is connected to the center of the lower surface of the end cover (4), and the thread head (6) is used to connect to a deceleration device; the cap body (1) is filled with a mixture of activated alumina and color-changing silica gel; and a filter cotton layer is also laid between the upper surface of the end cover (4) and the mixture.

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