A device for purging the interior of an oil booster pump
By adding a dehumidification and filtration component at the air compressor intake end and a drying component at the exhaust end, the problems of moisture in the air affecting the purging quality and the inconvenience of disassembling and cleaning the filter screen are solved, achieving efficient cleaning of the oil booster pump's internal cavity and simple maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BAOTAI TIANHONG IND TECHNOLOGY (CHENYANG) CO LTD
- Filing Date
- 2025-11-26
- Publication Date
- 2026-07-21
AI Technical Summary
The compressed air output by the existing air compressor has a high moisture content, which affects the quality of the purging and cleaning operation. Moreover, the filter screen is cumbersome to disassemble and clean after dust accumulation, making maintenance inconvenient.
An intake dehumidification component and a combined filter mechanism are added to the air compressor intake end, and a drying dehumidification component is added to the exhaust end. Activated alumina particles and silica gel desiccant are used to adsorb water vapor and further dry the air, respectively. Combined with the filter screen, the air is filtered and dried in multiple stages.
It improves air cleanliness and dryness, ensuring effective purging and cleaning. It features a compact structure, simple operation, and convenient maintenance.
Smart Images

Figure CN224532929U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil booster pump maintenance technology, specifically an oil booster pump internal cavity purging device. Background Technology
[0002] The principle of vacuum pumping is to use a high-pressure, high-speed oil vapor jet to carry gas molecules, pushing the gas from the pump inlet to the outlet through momentum transfer, thereby achieving vacuuming. Regularly purging the inner cavity of the oil booster pump can effectively remove residual oil, impurities, and potentially corrosive substances, preventing blockages, seal failures, or component damage during operation. In existing technologies, air compressors are mostly used as the power source, using high-pressure gas to purge and clean the pump's internal cavity. The quality of the compressed air output from the air compressor directly affects the quality of the purging operation. If dust and other impurities in the air enter the equipment with the compressed air, it can easily cause component wear, pipeline blockage, or corrosion. Therefore, filtration devices are needed to purify the intake and exhaust air. However, existing technologies have significant limitations. First, they can only filter dust from the intake air, but cannot remove moisture. High moisture content in compressed air directly affects the quality of the purging operation. Second, disassembling and cleaning the filter screen after dust accumulation is inconvenient, making maintenance cumbersome. Therefore, this project was developed to address these issues. Utility Model Content
[0003] To address the shortcomings of existing technologies, this utility model provides an oil booster pump internal cavity purging device, which solves the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: an internal purging device for an oil booster pump, comprising an air compressor body mounted on a movable base. The air compressor body has a quick-opening flange end at its inlet, and an inlet dehumidification assembly is connected to the quick-opening flange end via a quick-opening flange fastener. One end of the inlet dehumidification assembly is connected to a combined filter mechanism. The housing of the combined filter mechanism is connected to the handle of the movable base via a connecting frame and an auxiliary bracket. A drying dehumidification assembly is mounted to the exhaust end of the air compressor body, and one end of the drying dehumidification assembly is connected to a purging pipe. One end of the purging pipe has a threaded seat, which is connected to the purging valve of the oil booster pump.
[0005] The aforementioned combined filtration mechanism includes three sets of symmetrically arranged U-shaped limiting slides disposed within the housing. The housing sidewall is provided with insertion holes corresponding to the positions of the U-shaped limiting slides. Filter interception components are slidably inserted into the limiting slides. The exposed end of the filter interception component is provided with a handle. Limiting locking components are provided on the housing sidewall corresponding to the filter interception components.
[0006] The aforementioned filtering and interception assembly includes a fixed frame, a rubber sealing strip on the outer end face of the fixed frame, the fixed frame slidingly engaging with a U-shaped limiting groove, and a filter screen plate installed inside the fixed frame, with the mesh density of the three sets of filter screen plates decreasing sequentially.
[0007] The aforementioned limiting and locking component includes a fixing pin fixed on the side wall of the housing and a limiting pin fixed on the outside of the fixing frame. A locking plate is rotatably mounted on the fixing pin, and a locking groove is opened on one side of the locking plate, which engages with the limiting pin.
[0008] The aforementioned air intake dehumidification component includes an air intake adsorption chamber, with grid plates embedded at both ends of the air intake adsorption chamber, and the air intake adsorption chamber is filled with activated alumina particles. Both ends of the air intake adsorption chamber are quick-opening flange ends.
[0009] The aforementioned drying and dehumidifying assembly includes an air guide pipe filled with silica gel desiccant, and both ends of the air guide pipe are quick-opening flange ends. Beneficial effects
[0010] This utility model provides an internal purging device for an oil booster pump. It offers the following advantages: This internal purging device improves upon existing air compressor bodies by adding an intake dehumidification component and a combined filter mechanism at the intake end. This removes dust and filters the incoming external air, adsorbing water vapor and thus improving the cleanliness and dryness of the gas entering the air compressor body. When the compressed air from the air compressor body is discharged through the outlet at one end of the air tank, it first undergoes further dehumidification and drying via the drying and dehumidification component. The dried gas is then injected into the oil booster pump through the purging valve to purge and clean the internal chambers. This effectively ensures the purging and cleaning effect, and the device features a compact structure, convenient operation, and easy maintenance. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural diagram of the oil booster pump internal cavity purging device described in this utility model.
[0012] Figure 2 This utility model Figure 1 A magnified schematic diagram of the structure at position a.
[0013] Figure 3 This is an isometric structural diagram of the fixed frame described in this utility model.
[0014] Figure 4 This is a partial cross-sectional view of the housing of the present invention.
[0015] Figure 5This is a cross-sectional view of the air intake adsorption chamber described in this utility model.
[0016] Figure 6 This is a cross-sectional view of the air duct of this utility model.
[0017] In the diagram: 1. Air compressor body; 2. Movable base; 3. Quick-opening flange end; 4. Quick-opening flange fastener; 5. Housing; 6. Purge pipe; 7. Threaded seat; 8. U-shaped limiting slide groove; 9. Insertion hole; 10. Handle; 11. Fixing frame; 12. Rubber sealing strip; 13. Filter screen; 14. Fixing pin; 15. Limiting pin; 16. Clamping plate; 17. Inlet adsorption chamber; 18. Grid screen; 19. Activated alumina particles; 20. Air guide pipe; 21. Silica gel desiccant. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example: Refer to the appendix of the instruction manual Figure 1-6As can be seen, this application specifically designs an internal purging device for an oil booster pump. An air compressor body 1 is mounted on a movable base 2. The air compressor body 1 has a quick-opening flange end 3 at its inlet end. The quick-opening flange end 3 is connected to an inlet dehumidification assembly via a quick-opening flange fastener 4. One end of the inlet dehumidification assembly is connected to a combined filter mechanism. The housing 5 of the combined filter mechanism is connected to the handle of the movable base 2 via a connecting frame and an auxiliary bracket. A drying and dehumidification assembly is mounted and connected to the exhaust end of the air compressor body 1. One end of the drying and dehumidification assembly is connected to a purge pipe 6. One end of the purge pipe 6 has a threaded seat 7, which is connected to the purge valve of the oil booster pump. This improves upon the existing air compressor body 1's inlet and exhaust sections by adding an inlet dehumidification assembly and a combined filter mechanism at the inlet end. The filter mechanism filters the incoming external air for dust removal and adsorbs water vapor in the air, thereby improving the cleanliness and dryness of the gas entering the air compressor body 1. When the air compressed by the air compressor body 1 is discharged through the outlet at one end of the air tank, it first passes through the drying and dehumidification component for further dehumidification and drying. The dried gas is injected into the oil booster pump through the purge valve to purge and clean the internal chamber of the oil booster pump, which can effectively ensure the purging and cleaning effect. The structure is compact, easy to operate, and convenient for maintenance. It should be noted that the air compressor body 1 mentioned above is a common and mature device in this field. For its specific structure and working principle, please refer to the XH7240CCZRGG type - 220V high-pressure air compressor produced and sold by Fuyang Xinbaihui Technology Co., Ltd., which will not be described again here.
[0020] In specific implementation, the above-mentioned combined filtration mechanism includes three sets of symmetrically arranged U-shaped limiting slide grooves 8 set in the housing 5. Insertion holes 9 are provided on the side wall of the housing 5 corresponding to the positions of the U-shaped limiting slide grooves 8. Filter interception components are slidably inserted into the limiting slide grooves. A handle 10 is provided on the exposed end of the filter interception component. A limiting locking component is provided on the side wall of the housing 5 corresponding to the filter interception component. The filter interception component includes a fixing frame 11, with a rubber sealing strip 12 on the outer end face of the fixing frame 11. The fixing frame 11 slides with the U-shaped limiting slide grooves 8. Filter screens 13 are installed inside the fixing frame 11. The mesh density of the three sets of filter screens 13 decreases sequentially. The limiting locking component includes a fixing pin 14 fixed to the side wall of the housing 5 and a fixing pin 15 fixed to the side wall of the housing 5. The limiting pin 15 on the outside of the fixed frame 11 has a retaining plate 16 rotatably mounted on the fixing pin 14. The retaining plate 16 has a slot on one side, which engages with the limiting pin 15. In use, the air drawn in by the air compressor body 1 first enters the housing 5 and passes through the filter screen 13 under wind pressure. The filter screen 13 intercepts dust particles in the air, improving the cleanliness of the air entering the air compressor body 1 and providing a high-quality air source for subsequent purging operations. After the purging operation is completed, the retaining plate 16 on the side wall of the housing 5 can be flipped so that the retaining plate 16 engages with the limiting action of the fixing pin 14. Pull the handle 10 to pull out the fixed frame 11 together with the filter screen 13. After cleaning, it can be reinserted. The structure is simple and the operation is convenient.
[0021] In the specific implementation process, the above-mentioned air intake dehumidification component includes an air intake adsorption chamber 17, with grid plates 18 embedded at both ends of the air intake adsorption chamber 17. The air intake adsorption chamber 17 is filled with activated alumina particles 19, and both ends of the air intake adsorption chamber 17 are quick-opening flange ends 3. The activated alumina particles 19 adsorb water vapor in the air intake, thereby effectively improving the dryness of the gas entering the air compressor body 1, providing a reliable guarantee for the subsequent purging operation of the oil booster pump cavity. Both ends of the air intake adsorption chamber 17 are equipped with quick-opening flange ends 3, which can be connected and disassembled through quick-opening flange fasteners 4, facilitating quick replacement.
[0022] In the specific implementation process, the above-mentioned drying and dehumidification component includes an air guide pipe 20, which is filled with silica gel desiccant 21. Both ends of the air guide pipe 20 are quick-opening flange ends 3. The silica gel desiccant 21 filled in the air guide pipe 20 is used to further dry and adsorb the compressed gas, thereby further improving the dryness of the air entering the inner cavity of the oil booster pump and further ensuring the quality of the purging operation.
[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A purging device for the inner cavity of an oil booster pump, comprising an air compressor body, characterized in that, The air compressor body is mounted on a movable base. The air intake end of the air compressor body is provided with a quick-opening flange end. The quick-opening flange end is connected to an intake dehumidification assembly via a quick-opening flange fastener. One end of the intake dehumidification assembly is connected to a combined filter mechanism. The housing part of the combined filter mechanism is assembled and connected to the handle of the movable base via a connecting frame and an auxiliary bracket. The exhaust end of the air compressor body is assembled and connected to a drying dehumidification assembly. One end of the drying dehumidification assembly is connected to a purge pipe. One end of the purge pipe is provided with a threaded seat. The threaded seat is connected to the purge valve of the oil booster pump.
2. The oil booster pump internal cavity purging device according to claim 1, characterized in that, The combined filtration mechanism includes three sets of symmetrically arranged U-shaped limiting slide grooves disposed within the housing. The side wall of the housing is provided with insertion holes corresponding to the positions of the U-shaped limiting slide grooves. Filter interception components are slidably inserted into the limiting slide grooves. The exposed end of the filter interception component is provided with a handle. A limiting locking component is provided on the side wall of the housing corresponding to the filter interception component.
3. The oil booster pump internal cavity purging device according to claim 2, characterized in that, The filtering and interception assembly includes a fixed frame, a rubber sealing strip is provided on the outer end face of the fixed frame, the fixed frame is slidably engaged with a U-shaped limiting groove, and a filter screen is installed inside the fixed frame, with the mesh density of the three sets of filter screens decreasing sequentially.
4. The oil booster pump internal cavity purging device according to claim 3, characterized in that, The limiting and locking component includes a fixing pin fixed on the side wall of the housing and a limiting pin fixed on the outside of the fixing frame. A locking plate is rotatably mounted on the fixing pin, and a locking groove is opened on one side of the locking plate, which is engaged with the limiting pin.
5. The oil booster pump internal cavity purging device according to claim 1, characterized in that, The air intake dehumidification component includes an air intake adsorption chamber, with grid plates embedded at both ends of the air intake adsorption chamber. The air intake adsorption chamber is filled with activated alumina particles, and both ends of the air intake adsorption chamber are quick-opening flange ends.
6. The oil booster pump internal cavity purging device according to claim 1, characterized in that, The drying and dehumidification assembly includes an air guide pipe filled with silica gel desiccant, and both ends of the air guide pipe are quick-opening flange ends.