Filtering and air supplying integrated inflating pump

Abstract

The utility model relates to the technical field of inflating pumps, in particular to a filtering and air supplying integrated inflating pump. The drying device comprises a main base, an air compression mechanism is arranged on the main base, the main base is further provided with a drying cavity, a communicating air channel is arranged between the drying cavity and the air compression mechanism, the drying cavity is further communicated with an air outlet mechanism, and a filtering assembly capable of filtering large and small impurities in air is installed at the end, close to the communicating air channel, of the drying cavity. The side, away from the communicating air channel, of the filtering assembly, of the drying cavity is filled with a drying agent, the filtering assembly comprises a first filtering net and first filtering cotton, the first filtering net is arranged between an air outlet hole of the communicating air channel and the first filtering cotton, the drying cavity axially penetrates through the main base to form a mounting opening, and a blocking cover is detachably mounted in the mounting opening; according to the utility model, after the prior art is improved, large and small impurities in the air are filtered through the filter assembly and then dehumidified by the drying agent to obtain clean high-quality air, so that the service life of the drying agent and the service life of equipment are prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air pumps, in particular to a filtering air supply integrated air pump. Background Art

[0002] With the development of automotive industrial technology, in order to enhance the comfort and stability during vehicle driving, air suspension systems have been widely used. Its air supply unit supplies compressed gas to the air springs of the vehicle to buffer the vibration of the wheels, and according to the air storage tank pressure and height sensors, the start and stop of the air supply unit and the charging and discharging modes are adjusted in real time through the ECU, so as to change the height of the air springs and achieve the purpose of stable vehicle body height.

[0003] For example, a Chinese patent document with the authorization number CN220904605U discloses an air supply unit (i.e., an air pump), which includes a distribution valve assembly and an air compression mechanism arranged on the distribution valve assembly. A first pipeline communicated with the outlet of the air compression mechanism is provided, and an air dryer is connected in series on the first pipeline; since the air dryer is connected in series outside the valve body of the distribution valve assembly, it occupies relatively large space and has a high cost.

[0004] In view of this, a Chinese patent document with the authorization number CN221144727U discloses an in-vehicle high-pressure electronic air pump, which includes a main base. A sub-base is arranged at the bottom end of the main base. An air extraction mechanism is arranged inside the main base. A drying flow channel is arranged inside the main base and the sub-base. The drying flow channel includes a communicating airway and a drying chamber. The communicating airway is arranged inside the sub-base, and the drying chamber is arranged inside the main base. The communicating airway is communicated with the drying chamber. A desiccant is arranged inside the drying chamber, and an air outlet mechanism is arranged above the drying chamber; by arranging a drying chamber inside the main base and filling it with desiccant, it does not occupy external space and saves costs, but it cannot filter large and small particle impurities and oil in the air, which not only affects the service life of the desiccant, but also these impurities entering the air pump will cause wear or blockage to the equipment and shorten the service life of the equipment.

[0005] Therefore, it is necessary to improve the deficiencies of the above prior art. Summary of the Invention

[0006] The technical problem to be solved by the utility model is to provide a filtering air supply integrated air pump aiming at the deficiencies of the above prior art, and solve the problems that in the prior art, large and small particle impurities and oil in the air cannot be filtered, which not only affects the service life of the desiccant, but also these impurities entering the air pump will cause wear or blockage to the equipment and shorten the service life of the equipment.

[0007] To achieve the above object, the present utility model provides the following technical solution: A filtering air supply integrated air pump, comprising a main base, an air compression mechanism is provided on the main base, a drying chamber is further provided on the main base, a communication air passage is provided between the drying chamber and the air compression mechanism, an air outlet mechanism is further communicated with the drying chamber, a filtering component capable of filtering large and small impurities in the air is installed at one end of the drying chamber close to the communication air passage, and a drying agent is filled on the side of the drying chamber away from the communication air passage and away from the filtering component.

[0008] With the above technical solution, when the air is compressed by the air compression mechanism and enters the communication air passage to flow to the drying chamber, after passing through the filtering component and then dehumidified by the drying agent, and then flows out through the air outlet mechanism and enters the air storage tank. After the large and small impurities in the air are first filtered by the filtering component, clean and high-quality air is obtained after dehumidification by the drying agent, thereby prolonging the service life of the drying agent and the equipment.

[0009] The further setting of the above technical solution is: The filtering component includes a first filter screen and a first filter cotton, and the first filter screen is arranged between the air outlet hole of the communication air passage and the first filter cotton.

[0010] With the above technical solution, the filter screen has a larger filtering aperture and can first filter large particulate impurities in the air, such as dust, sand grains, etc.; while the filter cotton has a finer filtering aperture and can further filter out tiny particles in the air, including some dust particles that are difficult to detect with the naked eye. This deep filtering effect helps to ensure the purity of the compressed air.

[0011] The further setting of the above technical solution is: The drying chamber penetrates the main base axially on the side close to the communication air passage to form an installation opening, a plug cover is detachably installed in the installation opening, a sealing ring groove is provided on the circumferential side of the plug cover, a sealing ring is sleeved in the sealing ring groove, a limiting spring with both ends respectively abutted against them is provided between the plug cover and the first filter screen, a first annular groove is provided on the inner wall of the drying chamber, the first filter cotton is snapped into the first annular groove, and the first filter screen and the first filter cotton are mutually attached.

[0012] With the above technical solution, during the first installation, first remove the plug cover, fill the drying agent into the drying chamber, then snap the first filter cotton into the first annular groove for positioning, then place the first filter screen to abut against the first filter cotton, then place the limiting spring, and then install the plug cover again; the limiting spring can resist the first filter screen to avoid its axial instability.

[0013] The further setting of the above technical solution is as follows: The air compression mechanism includes a driving motor installed on the main base, an eccentric shaft connected to the output shaft of the driving motor, and a piston mechanism rotatably connected to the eccentric shaft. An installation cavity is provided in the main base, and the eccentric shaft and the piston mechanism are both installed in the installation cavity. The piston mechanism is communicated with one end of the drying cavity close to the first filter screen through a communication air duct.

[0014] Adopting the above technical solution, the rotation of the output shaft of the driving motor drives the rotation of the eccentric shaft, and the eccentric shaft drives the piston mechanism to perform reciprocating air compression actions, continuously squeezing the air through the communication air duct and flowing into the drying cavity, and then flowing into the air outlet mechanism after filtration and drying.

[0015] The further setting of the above technical solution is as follows: The piston mechanism is provided with two symmetrical ones. The two piston mechanisms are respectively communicated with both ends of the drying cavity through corresponding communication air ducts. The drying cavity axially penetrates both ends of the main base, and the filter assembly, the plug cover, and the limiting spring are symmetrically installed at both ends of the drying cavity.

[0016] Adopting the above technical solution, by driving two piston mechanisms and a matching filter structure with one driving motor, the compression efficiency can be improved.

[0017] The further setting of the above technical solution is as follows: The filter assembly further includes a second filter screen and a second filter cotton installed in the middle of the drying cavity. There is a gap between the two relatively arranged second filter screens. The air outlet of the air outlet mechanism is located on the inner wall of the drying cavity between the two second filter screens. A desiccant is filled between the first filter cotton and the adjacent second filter cotton.

[0018] Adopting the above technical solution, after the compressed air is filtered once by the first filter screen and the first filter cotton, dehumidified by the desiccant, and then filtered twice by the second filter screen and the second filter cotton, the filtering effect can be further improved.

[0019] The further setting of the above technical solution is as follows: A second annular groove is provided on the inner wall of the drying cavity. The second filter cotton is clamped into the second annular groove. A stepped boss is provided on the inner wall of the drying cavity on the side of the second filter screen close to the air outlet of the air outlet mechanism. The side surface of the second filter screen can abut against the stepped boss, and the second filter screen and the adjacent second filter cotton are mutually attached.

[0020] Adopting the above technical solution, the second filter cotton is clamped into the second annular groove to limit it, and the stepped boss limits the second filter screen. The second filter screen and the second filter cotton are basically axially fixed by the extrusion of the desiccant filled between the first filter cotton and the adjacent second filter cotton.

[0021] The further setting of the above technical solution is as follows: The piston mechanism includes a piston rod, a piston ring connected to the end of the piston rod away from the eccentric shaft, a cylinder body sleeved outside the piston ring, and a compression check valve installed at the end of the cylinder body. A bearing is installed at one end of the eccentric shaft close to the piston rod, and one end of the piston rod is clamped with the outer ring of the bearing. A compression plug cover is detachably and sealedly installed on one side of the main base facing the compression check valve. A high-pressure air chamber is formed between the inner wall of the compression plug cover, the outer wall of the compression check valve, and the outer wall of the cylinder body, and the high-pressure air chamber is communicated with a communication air passage.

[0022] With the above technical solution, the drive motor drives the eccentric shaft to rotate, driving the piston rod to reciprocate along the inner wall of the cylinder body, so that the piston ring repeatedly compresses air to enter the high-pressure air chamber through the compression check valve, and then enters the drying chamber through the communication air passage.

[0023] The further setting of the above technical solution is as follows: The air outlet mechanism includes an air outlet air passage communicated with the drying chamber, an air outlet check valve connected to the air outlet air passage, and an air storage joint installed outside the main base and capable of being communicated with the air outlet air passage. An automatic pressure relief valve is also communicated behind the air outlet check valve, and the air outlet end of the automatic pressure relief valve is communicated with the outside of the main base.

[0024] With the above technical solution, air flows through the drying chamber into the air outlet air passage and through the air outlet check valve, and finally flows through the air storage joint into an externally connected air storage tank. When the air pressure in the air outlet air passage is too high, air will be discharged through the automatic pressure relief valve to restore the air pressure to the normal range.

[0025] The further setting of the above technical solution is as follows: Four shock absorber joints, an air inlet joint, and an air outlet joint capable of being communicated with the air storage joint are also installed outside the main base. A control sub-valve is installed outside the main base corresponding to each shock absorber joint, and in addition, a control main valve is installed. An air storage valve for controlling the air inlet of the air storage tank, a first exhaust valve for exhausting the air storage tank, a second exhaust valve for exhausting the drying chamber, and a third exhaust valve for controlling the air pressure of the air circuit are also installed outside the main base. A sensor for detecting the air pressure and temperature of the air circuit is installed inside the main base. A sub-base for fixing the control main valve, control sub-valves, air storage valve, first exhaust valve, second exhaust valve, and third exhaust valve is fixedly connected to the main base.

[0026] With the above technical solution, the air volume of each shock absorber can be respectively opened and closed by the control main valve and control sub-valves; the air inlet and exhaust of the air storage tank can be respectively controlled by the air storage valve and the first exhaust valve; the opening and closing of the exhaust in the drying chamber can be controlled by the second exhaust valve; the air pressure of the air circuit can be adjusted by the controller controlling the opening and closing of the third exhaust valve through the sensor detecting the air pressure and temperature of the air circuit.

[0027] The beneficial effects achieved by the present utility model are as follows: After the filter component first filters large and small impurities in the air, and then the desiccant dehumidifies it, clean and high-quality air is obtained, thereby extending the service life of the desiccant and the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0029] Figure 2 is a schematic sectional structure of an embodiment of the present utility model Figure 1 ;

[0030] Figure 3 is Figure 2 a partial view at A in

[0031] Figure 4 is Figure 2 a partial view at B in

[0032] Figure 5 is an exploded structural schematic diagram of the filter component in an embodiment of the present utility model;

[0033] Figure 6 is a schematic sectional structure of an embodiment of the present utility model Figure 2 ;

[0034] Figure 7 is a schematic sectional structure of an embodiment of the present utility model Figure 3 ;

[0035] Figure 8 is a schematic structural diagram of the bottom view of the main base in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] As Figure 1-8As shown in the figure, a filtering air supply integrated air pump includes a main base 1. An air compression mechanism 2 is provided on the main base 1. The main base 1 is also provided with a drying chamber 3. A communication airway 4 is provided between the drying chamber 3 and the air compression mechanism 2. The drying chamber 3 is also communicated with an air outlet mechanism 5. A filtering component 6 capable of filtering large and small impurities in the air is installed at one end of the drying chamber 3 close to the communication airway 4. A drying agent (not shown in the figure) is filled on the side of the drying chamber 3 away from the communication airway 4 and away from the filtering component 6. The filtering component 6 includes a first filter screen 61 and a first filter cotton 62. The first filter screen 61 is arranged between the air outlet hole of the communication airway 4 and the first filter cotton 62. An installation opening 30 is formed by penetrating the main base 1 axially on the side of the drying chamber 3 close to the communication airway 4. A plug cover 31 is detachably installed in the installation opening 30 by means of threads. A sealing ring groove 32 is provided on the circumferential side of the plug cover 31. A sealing ring 33 is sleeved in the sealing ring groove 32. A limiting spring 34 whose two ends are respectively abutted against them is provided between the plug cover 31 and the first filter screen 61. A first annular groove 35 is provided on the inner wall of the drying chamber 3. The first filter cotton 62 is snapped into the first annular groove 35. The first filter screen 61 and the first filter cotton 62 are mutually attached.

[0038] As Figure 1 , 6 , 7 As shown, the air compression mechanism 2 includes a driving motor 21 installed on the main base 1, an eccentric shaft 22 connected to the output shaft of the driving motor 21, and a piston mechanism 23 rotatably connected to the eccentric shaft 22. An installation cavity 10 is provided in the main base 1. The eccentric shaft 22 and the piston mechanism 23 are both installed in the installation cavity 10. The piston mechanism 23 is communicated with one end of the drying chamber 3 close to the first filter screen 61 through the communication airway 4. The piston mechanism 23 is provided with two symmetrical ones. The two piston mechanisms 23 are respectively communicated with both ends of the drying chamber 3 through the corresponding communication airways 4. The drying chamber 3 axially penetrates both ends of the main base 1. The filtering component 6, the plug cover 31, and the limiting spring 34 are symmetrically installed at both ends of the drying chamber 3. The piston mechanism 23 includes a piston rod 231, a piston ring 232 connected to the end of the piston rod 231 away from the eccentric shaft 22, a cylinder block 233 sleeved outside the piston ring 232, and a compression check valve 234 installed at the end of the cylinder block 233. A bearing 235 is installed at one end of the eccentric shaft 22 close to the piston rod 231. One end of the piston rod 231 is clamped with the outer ring of the bearing 234. A compression plug cover 236 is detachably and hermetically installed on the side of the main base 1 facing the compression check valve 234. A high-pressure air cavity 237 is formed between the inner wall of the compression plug cover 236, the outer wall of the compression check valve 234, and the outer wall of the cylinder block 233. The high-pressure air cavity 237 is communicated with the communication airway 4.

[0039] As Figure 2 , 3As shown in the figure, the filtering component 6 further includes a second filter screen 63 and a second filter cotton 64 installed in the middle of the drying chamber 3. There is a gap between the two oppositely arranged second filter screens 63. The air outlet of the air outlet mechanism 5 is located on the inner wall of the drying chamber 3 between the two second filter screens 63. A desiccant is filled between the first filter cotton 62 and the adjacent second filter cotton 64. A second annular groove 36 is provided on the inner wall of the drying chamber 3, and the second filter cotton 64 is snapped into the second annular groove 36. A stepped boss 37 is provided on the inner wall of the drying chamber 3 on the side of the second filter screen close to the air outlet of the air outlet mechanism 5. The side surface of the second filter screen 63 can abut against the stepped boss 37, and the second filter screen 63 and the adjacent second filter cotton 64 are mutually attached.

[0040] As Figure 1 , 2 , 8 shown, the air outlet mechanism 5 includes an air outlet airway 50 communicated with the drying chamber 3, an air outlet check valve 51 connected to the air outlet airway 50, and a gas storage joint 52 installed outside the main base 1 and capable of being communicated with the air outlet airway 50. An automatic pressure relief valve 53 is also communicated behind the air outlet check valve 51, and the air outlet end of the automatic pressure relief valve 53 is communicated with the outside of the main base 1.

[0041] As Figure 1 , 8 shown, four shock absorber joints 11, an air inlet joint 12, and an exhaust joint 13 capable of being communicated with the gas storage joint 52 are further installed outside the main base 1. A control sub-valve 111 is respectively installed outside the main base 1 corresponding to each shock absorber joint 11, and in addition, a control main valve 110 is installed. A gas storage valve 14 for controlling the air inlet of the gas storage tank, a first exhaust valve 15 for exhausting the gas storage tank, a second exhaust valve 16 for exhausting the drying chamber 3, and a third exhaust valve 17 for controlling the air pressure of the air circuit are further installed outside the main base 1. A sensor 171 for detecting the air pressure and temperature of the air circuit is installed inside the main base 1. A sub-base 7 for fixing the control main valve 110, the control sub-valve 111, the gas storage valve 14, the first exhaust valve 15, the second exhaust valve 16, and the third exhaust valve 17 is fixedly connected to the main base 1.

[0042] In the above embodiment, when the air is squeezed by the air compression mechanism 2 and enters the communication airway 4 and flows to the drying chamber 3, after passing through the filtering component 6 (including the first filter screen 61, the first filter cotton 62, the second filter screen 63, and the second filter cotton 64), it is dehumidified by the desiccant, and then flows out through the air outlet mechanism 5 and enters the gas storage tank; the filter screen has a relatively large filtering aperture and can first filter large-particle impurities in the air, such as dust and sand grains; while the filter cotton has a finer filtering aperture and can further filter out tiny particles in the air, including some dust particles that are difficult to detect by the naked eye. This deep filtering effect helps to ensure the purity of the compressed air, and after being dehumidified by the desiccant, clean and high-quality air is obtained, thereby extending the service life of the desiccant and the equipment.

Claims

1. A filter-air-supply integrated air pump, comprising a main base, an air compression mechanism disposed on the main base, a drying chamber disposed on the main base, an air passage connected between the drying chamber and the air compression mechanism, and an air outlet mechanism connected to the drying chamber, characterized in that: A filter assembly capable of filtering large and small impurities in the air is installed at one end of the drying chamber close to the connecting airway. The drying chamber is located on a side of the filter assembly away from the connecting airway and is filled with desiccant. The filter assembly includes a first filter screen and a first filter cotton. The first filter screen is arranged between the air outlet of the connecting airway and the first filter cotton. The filter assembly also includes a second filter screen and a second filter cotton installed in the middle of the drying chamber. There is a gap between the two second filter screens arranged opposite to each other. The air outlet of the air outlet mechanism is located on the inner wall of the drying chamber between the two second filter screens, and desiccant is filled between the first filter cotton and the adjacent second filter cotton.

2. The filter-air-supply integrated air pump according to claim 1, characterized in that: The drying chamber is axially connected to the connecting airway and penetrates the main base to form an installation opening. A plugging cover is detachably installed in the installation opening. A sealing ring groove is provided on the peripheral side of the plugging cover. A sealing ring is sleeved in the sealing ring groove. A limit spring is provided between the plugging cover and the first filter screen, with its two ends respectively abutting against the plugging cover and the first filter screen. A first ring groove is provided on the inner wall of the drying chamber. The first filter cotton is inserted into the first ring groove, and the first filter screen and the first filter cotton fit each other.

3. The filter-air-supply integrated air pump according to claim 2, characterized in that: The air compression mechanism includes a driving motor installed on the main base, an eccentric shaft connected to the output shaft of the driving motor, and a piston mechanism rotatably connected to the eccentric shaft. A mounting cavity is provided in the main base, and the eccentric shaft and the piston mechanism are both installed in the mounting cavity. The piston mechanism is connected to the end of the drying chamber close to the first filter screen through a connecting air passage.

4. The filter-air-supply integrated air pump according to claim 3, characterized in that: The piston mechanisms are arranged in two symmetrical forms, and the two piston mechanisms are connected to the two ends of the drying chamber by corresponding connecting air passages. The drying chamber axially passes through the two ends of the main base, and the filter assembly, the plugging cover and the limit spring are symmetrically installed at the two ends of the drying chamber.

5. The filter-air-supply integrated air pump according to claim 1, characterized in that: A second annular groove is provided on the inner wall of the drying chamber, and the second filter cotton is inserted into the second annular groove. A stepped boss is provided on the inner wall of the drying chamber on the side of the second filter screen close to the air outlet of the air outlet mechanism, and the side surface of the second filter screen can abut against the stepped boss, and the second filter screen and the adjacent second filter cotton fit each other.

6. A filter-air-supply integrated air pump according to claim 3 or 4, characterized in that: The piston mechanism includes a piston rod, a piston ring connected to one end of the piston rod away from the eccentric shaft, a cylinder body arranged outside the piston ring, and a compression check valve installed on the end of the cylinder body. A bearing is installed on the eccentric shaft near the end of the piston rod, and one end of the piston rod is clamped with the outer ring of the bearing. A compression plug cover is detachably and sealably installed on the side of the main base facing the compression check valve. A high-pressure air cavity is formed between the inner wall of the compression plug cover, the outer wall of the compression check valve and the outer wall of the cylinder body, and the high-pressure air cavity is connected to the connecting air channel.

7. The filter-air-supply integrated air pump according to claim 6, characterized in that: The air outlet mechanism includes an air outlet passage connected to the drying chamber, an air outlet one-way valve connected to the air outlet passage, and an air storage joint installed outside the main base and capable of being connected to the air outlet passage. An automatic pressure relief valve is also connected behind the air outlet one-way valve, and the air outlet end of the automatic pressure relief valve is connected to the outside of the main base.

8. The filter-air-supply integrated air pump according to claim 7, characterized in that: Four shock absorber joints, an air intake joint and an exhaust joint that can be connected to the air storage joint are also installed outside the main base. A control sub-valve is installed outside the main base corresponding to each shock absorber joint. The main base is also installed with a control main valve. The main base is also installed with an air storage valve for controlling the air intake of the air storage tank, a first exhaust valve for exhausting the air storage tank, a second exhaust valve for exhausting the drying chamber and a third exhaust valve for controlling the air path pressure. A sensor for detecting the air path pressure and temperature is installed inside the main base. A sub-base for fixing the control main valve, the control sub-valve, the air storage valve, the first exhaust valve, the second exhaust valve and the third exhaust valve is fixedly connected to the main base.

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