Air filter device of hydraulic system of Pomini numerical control roll grinder
By designing an air filter, connecting pipe, and oil receiving tank into the hydraulic system of the Pomini CNC roll grinding machine, the problems of oil evaporation and dripping/overflow were solved, enabling oil recovery and cost reduction.
Patent Information
- Application Number
- CN202520300076.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-25
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-25
AI Technical Summary
The existing hydraulic system breather of the Pomini CNC roll grinding machine has problems such as easy oil evaporation and oil vapor formation, small filter size and limited adsorption of particles, high breathing resistance, resulting in oil dripping and overflow, increasing maintenance costs and environmental pollution.
Design a device that includes an air filter, connecting pipes, and an oil collection tank. The oil collection tank can be used to recover condensed oil droplets, reduce oil waste, reduce the workload of the respirator, and lower maintenance costs.
It has enabled the effective recycling of oil, reduced oil waste and environmental pollution, lowered maintenance costs, and improved sanitation.
Smart Images

Figure CN223608958U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to hydraulic oil tank technical field, namely Pomini numerical control roll grinder hydraulic system air filter device. BACKGROUND
[0002] In prior art, the company operation area has 4 numerical control roll grinders imported from Italy Pomini company in 2005, has excellent performance, is suitable for grinding various rolls, and the tolerance is small.
[0003] Under normal working condition, the hydraulic station oil tank liquid level is always in fluctuation, and the channel must be established between the oil tank and the atmosphere to keep pressure balance.
[0004] Before improvement, the breather is composed of a filter and the interface connected with the oil tank, aims at realizing the pressure balance between the oil tank and the outside and filtering air.
[0005] 1. In the oil product circulation process of the hydraulic station, especially under high temperature condition, the oil product is easy to evaporate and form oil gas.
[0006] 2. The filter screen volume is small, the adsorbed particle amount is limited, is easy to saturate, the breathing resistance is big, and even the particles on the filter screen are sucked into the oil tank again.
[0007] 3. In order to reduce the breathing resistance, part of products increases the filter hole, reduces the aluminum material layer and thickness, and the filtering effect is poor.
[0008] 4. The filter material needs to be replaced regularly, and the maintenance and management cost is increased.
[0009] 5. After the breather, part of oil gas is condensed, causes oil drop to the oil tank outer cover plate, causes oil product waste and environmental pollution, increases the difficulty of health treatment. UTILITY MODEL CONTENT
[0010] The utility model aims at the above-mentioned insufficient and provides a kind of Pomini numerical control roll grinder hydraulic system air filter device with reasonable structure and good use effect.
[0011] The technical solution of the utility model is: Pomini numerical control roll grinder hydraulic system air filter device, including air filter with oil tank connection, air filter and a section of connecting pipe are connected, connecting pipe and oil tank are connected, there is an oil receiving groove on the oil tank below the air filter, there is a vertical pipe in the middle of the oil receiving groove, the upper end of the vertical pipe is inserted into the connecting pipe and is on the bottom of the air filter, the lower end of the vertical pipe is communicated with the groove body outside.
[0012] The connecting pipe and the oil tank are connected through threads.
[0013] The utility model has the advantages that: through setting the oil receiving groove on the respirator, the oil receiving groove is provided with the vertical pipe, the condensed oil drops generated by evaporation can be effectively recycled, the oil can not overflow, the waste of oil is reduced, the working strength of the respirator is reduced, the cost of spare parts replacement is reduced, the pollution of external environment is reduced, and the sanitary condition is improved.
[0014] The embodiments of the utility model will be further described in detail below with reference to the drawings. DRAWINGS
[0015] Figure 1 It is the structural diagram of the utility model. PREFERRED EMBODIMENT
[0016] Referring to Figure 1 , the names of the parts are as follows: air filter 1, connecting pipe 2, oil tank 3, oil receiving groove 4, vertical pipe 5.
[0017] Referring to Figure 1 , the Pomini numerical control roll grinder hydraulic system air filter device comprises an air filter 1 connected with an oil tank 3 in communication, which is a straight cylinder type filter screen cylinder. The air filter 1 is connected with a section of connecting pipe 2, the connecting pipe 2 is connected with the oil tank 3 through threads, there is an oil receiving groove 4 on the oil tank 3 below the air filter 1, there is a vertical pipe 5 in the middle of the oil receiving groove 4, the upper end of the vertical pipe 5 is inserted into the connecting pipe 2 and is on the bottom of the air filter 1, and the lower end of the vertical pipe 5 is communicated with the groove body outside the oil receiving groove 4. When installing, the lower opening of the vertical pipe 5 of the oil receiving groove 4 is aligned with the oil tank inlet hole, the lower end of the connecting pipe 2 of the air filter 1 is inserted through the vertical pipe 5 and is connected with the oil tank inlet hole through threads. In use, after the oil gas passes through the air filter 1, part of the oil gas is condensed, and the formed oil drops fall into the oil receiving groove 4 outside the oil tank, and because the gap between the vertical pipe 5 and the connecting pipe 2 is small, the oil drops can only fall into the oil receiving groove 4 and cannot overflow. The device can make the condensed oil directly drop back or return to the oil tank through the oil receiving groove 4, so that the waste of oil is avoided, and the use is sanitary.
[0018] The above description is only a specific embodiment of the utility model, and various examples do not limit the essential content of the utility model.
Claims
1. The air filter device of the hydraulic system of the Pomini numerical control roll grinder, comprising an air filter (1) connected with the oil tank (3), characterized in that Air filter (1) is connected with a section of connecting pipe (2), connecting pipe (2) is connected with oil tank (3), oil tank (3) below air filter (1) has an oil receiving groove (4), oil receiving groove (4) has a vertical pipe (5) in the middle, vertical pipe (5) upper end is inserted into connecting pipe (2) and is supported on air filter (1) outer bottom, vertical pipe (5) lower end is communicated with oil receiving groove (4) groove body outside.
2. The air filter device for the hydraulic system of a Pomini CNC roll grinder according to claim 1, characterized in that Connecting pipe (2) and oil tank (3) are connected through threads.