Air filter

Abstract

The utility model discloses an air filter which comprises an installation head, a centrifugal separation assembly and a plurality of filtering assemblies, the installation head is provided with a centrifugal installation part and a plurality of filtering installation parts, the centrifugal separation assembly is detachably connected to the centrifugal installation part, and the centrifugal separation assembly is used for separating solid and liquid in airflow; the filtering assembly comprises a 7-shaped leading-in pipe fitting, a filtering shell and a filtering device, the filtering shell is provided with a filtering cavity and an opening connected to the filtering cavity, the filtering shell is connected to the filtering mounting part, the filtering device is arranged in the filtering cavity, a leading-in channel is defined by the inner wall of the leading-in pipe fitting, the first end of the leading-in pipe fitting is connected to the filtering mounting part, and the second end of the leading-in pipe fitting is connected to the filtering mounting part; the first end of the leading-in channel communicates with the filtering air inlet, the second end of the leading-in pipe fitting is inserted along the opening and connected to the filtering device, an air guiding channel is formed between the outer surface of the leading-in pipe fitting and the inner wall of the opening, and the filtering cavity communicates with the filtering air outlet through the air guiding channel.

Description

Technical Field

[0001] The utility model relates to the technical field of air filtering devices, in particular to an air filter. Background Art

[0002] An air pump oil-water separator is a device used to separate impurities such as water, oil, and dust in the air. It is widely used in industries such as automobiles and pharmaceuticals. Especially during the process of automotive painting operations, the air pump needs to extract air from the surrounding environment and compress it, and use high-pressure gas to spray paint onto the surface of the workpiece. However, due to the presence of impurities such as water, floating oil droplets, and dust in the air of the surrounding environment, an air filter such as an oil-water separator must be used to filter the air.

[0003] Currently, there are certain problems with existing air filters such as oil-water separators on the market. Existing air filters such as oil-water separators usually have an air inlet hole and an air outlet hole on the side where the mounting head faces the filtering component. The air inlet hole is set in the middle and is arranged around the connecting screw, and the air outlet hole is set on one side of the air inlet hole. This structure causes the opening position and opening size of the product to be affected by the size of the base. Its air outlet hole and air inlet hole are small, resulting in blocked air flow. This not only affects the pressure of the finally exported air flow, but also affects the filtering effect, and the product use experience is poor.

[0004] Therefore, the utility model provides an air filter, which can effectively solve the above problems, has a simple structure, reasonable design, unobstructed air flow channels, and good filtering effect. Summary of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an air filter with a simple structure, reasonable design, unobstructed air flow channels, and good filtering effect.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] An air filter, comprising:

[0008] A mounting head, the mounting head is provided with a centrifugal mounting part and a plurality of filtering mounting parts. The centrifugal mounting part is provided with a centrifugal air inlet and a centrifugal air outlet. The filtering mounting part is provided with a filtering air inlet and a filtering air outlet. The filtering air outlet communicates with the adjacent filtering air inlet;

[0009] A centrifugal separation component, the centrifugal separation component is detachably connected to the centrifugal mounting part, and the centrifugal separation component is used to separate solids and liquids in the air flow;

[0010] A number of filtering components, the filtering components including a "7"-shaped inlet pipe fitting, a filtering housing, and a filtering device. The filtering housing is provided with a filtering cavity and an opening connected to the filtering cavity. The filtering housing is connected to the filtering mounting portion. The filtering device is disposed in the filtering cavity. The inner wall of the inlet pipe fitting defines an inlet channel. The first end of the inlet pipe fitting is connected to the filtering mounting portion. The first end of the inlet channel communicates with the filtering air inlet. The second end of the inlet pipe fitting is inserted along the opening and connected to the filtering device. An air guiding channel is formed between the outer surface of the inlet pipe fitting and the inner wall of the opening. The air guiding channel communicates the filtering cavity with the filtering air outlet.

[0011] As an improvement of the present utility model, the filtering device is columnar and has a middle channel. The middle channel communicates with the second end of the inlet channel to allow air flow to enter the middle channel and pass through the filtering device into the filtering cavity.

[0012] As an improvement of the present utility model, the filtering device includes a filter element, a support mesh, and an end connector. The filter element is connected to the support mesh. The support mesh is connected to the end connector. The end connector is connected to the second end of the inlet pipe fitting.

[0013] As an improvement of the present utility model, a number of the filtering components are arranged side by side in sequence. Along the direction away from the centrifugal separation component, the filtering degree of the filter element of the filtering component gradually increases.

[0014] As an improvement of the present utility model, the centrifugal separation component includes a separation housing and a spiral turbulence inducer. The separation housing is provided with a separation cavity. The separation housing and the spiral turbulence inducer are connected to the centrifugal mounting portion. The spiral turbulence inducer is inserted into the separation cavity. A gap formed between the spiral turbulence inducer and the inner wall of the separation cavity communicates with the centrifugal air inlet. The surface of the spiral turbulence inducer is provided with a spiral portion. The outer surface of the spiral portion abuts against the inner wall of the separation cavity. A return channel is provided in the middle of the spiral turbulence inducer. The return channel communicates the separation cavity with the centrifugal air outlet.

[0015] As an improvement of the present utility model, the centrifugal separation component further includes a condensation return member. The condensation return member is detachably connected to the spiral turbulence inducer and inserted into the return channel. The condensation return member is used for condensing liquid droplets and allowing the liquid droplets to flow down along the condensation return member.

[0016] As an improvement of the present utility model, it further includes a liquid outlet plug. The bottom of the separation housing is provided with a liquid outlet communicating with the separation cavity. The liquid outlet plug is detachably inserted into the liquid outlet.

[0017] As an improvement of the present utility model, it further includes a pressure regulating assembly. The mounting head is provided with a pressure regulating mounting portion, and the pressure regulating assembly is detachably connected to the pressure regulating mounting portion. The pressure regulating mounting portion communicates with the centrifugal air outlet and is used to adjust the air pressure of the air flowing out along the centrifugal air outlet.

[0018] As an improvement of the present utility model, the centrifugal mounting portion is provided with a first chamber, and the centrifugal mounting portion is provided with a pressure regulating air hole communicating the first chamber and the centrifugal air outlet. The pressure regulating assembly includes a connection housing and a valve assembly. The connection housing is provided with a connection chamber and a vent hole communicating with the connection chamber. The valve assembly is arranged between the first chamber and the connection chamber. When the air pressure in the first chamber is greater than the pressure required to open the valve assembly, the valve assembly opens to allow the air flow to flow from the first chamber through the connection chamber and be discharged along the vent hole.

[0019] As an improvement of the present utility model, the valve assembly includes a first elastic member, a diaphragm and a valve stem. The first elastic member is arranged in the connection chamber. The diaphragm is provided with an air valve hole. The valve stem is arranged in the centrifugal mounting portion. The elastic force of the first elastic member drives the diaphragm downward so that the upper end of the valve stem is inserted into the air valve hole and abuts against the edge of the air valve hole.

[0020] As an improvement of the present utility model, the pressure regulating assembly further includes a spiral adjusting housing, a screw member and a nut seat. The spiral adjusting housing is rotatably connected to the connection housing. The screw member is connected to the connection housing. The nut seat is threadedly connected to the screw member. The nut seat is connected to the upper end of the first elastic member, and the lower end of the first elastic member abuts against the upper surface of the diaphragm.

[0021] As an improvement of the present utility model, the valve assembly further includes a second elastic member and a valve seat. The valve seat is connected to the bottom of the valve stem. One end of the second elastic member abuts against the valve seat, and the other end of the second elastic member abuts against the inside of the mounting head.

[0022] As an improvement of the present utility model, the valve stem is provided with a valve stem channel and a valve stem air hole passing through the side wall of the valve stem channel. The valve stem channel communicates with the separation chamber, and the valve stem air hole communicates the valve stem channel with the centrifugal air outlet.

[0023] As an improvement of the present utility model, it further includes a first pressure gauge. The first pressure gauge is connected to the centrifugal mounting portion of the mounting head. The mounting head is provided with a first pressure gauge channel, and the first pressure gauge channel communicates with the air inlet of the first pressure gauge and the centrifugal air outlet.

[0024] As an improvement of the present utility model, it further includes a second pressure gauge, the second pressure gauge is connected to one of the filter mounting parts of the mounting head, the mounting head is provided with a second pressure gauge channel, and the second pressure gauge channel communicates with the air inlet and the introduction channel of the second pressure gauge.

[0025] As an improvement of the present utility model, the condensation reflux member includes a cylindrical condensation pipe and a connection seat, the condensation pipe is provided with a connection channel, the screw part of the connection seat passes through the connection channel and is connected to the spiral turbulator, the upper end of the condensation pipe abuts against the spiral turbulator, and the lower end of the condensation pipe abuts against the abutting part of the connection seat.

[0026] As an improvement of the present utility model, the bottom edge of the connection seat is provided with an inclined flow guiding slope, and there is a gap between the edge of the connection seat and the separation housing, and the gap allows liquid to flow through.

[0027] As an improvement of the present utility model, it further includes an air inlet cover, and the air inlet cover is detachably connected to the mounting head and covers the centrifugal air inlet.

[0028] As an improvement of the present utility model, the surface of the spiral adjustment housing is also provided with friction stripes.

[0029] As an improvement of the present utility model, the mounting head is also provided with an air flow guiding mark, and the air flow guiding mark is used to mark the flow direction of the air flow.

[0030] The beneficial effects of the present utility model are as follows: Through the setting of the above structure, during use, the air flow generated by the air pump enters the centrifugal separation assembly along the centrifugal air inlet, and the air flow after separating some water, oil droplets, dust and other impurities therein enters the filter assembly along the centrifugal air outlet and the filter air inlet. The first end of the "7"-shaped introduction pipe fitting is connected to the filter mounting part, and the air flow enters the filter assembly along the introduction channel. After being filtered by the filter device, it flows out to the filter air outlet along the air guiding channel between the outer surface of the introduction pipe fitting and the inner wall of the opening. After passing through the hierarchical filtration of multiple filter assemblies, it finally discharges along the air outlet; the air guiding channel formed between the outer surface of the introduction pipe fitting and the inner wall of the opening is annular and has a larger aperture, and there is no screw passing through the air inlet to connect to the filter mounting part, so that the air inlets and outlets of the filter assembly with larger sizes can be set, the air flow channel is unobstructed, and the filtration effect is good. Description of the Drawings

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. The following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0032] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0033] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0034] Figure 2 is a cross-sectional view of the present utility model when the air pressure matches the pressure of the first elastic member;

[0035] Figure 3 is a cross-sectional view of the present utility model when the air pressure is greater than the pressure of the first elastic member;

[0036] Figure 4 is Figure 2 an enlarged view of circle A;

[0037] Figure 5 is Figure 3 an enlarged view of circle B;

[0038] Figure 6 is a schematic diagram of the explosion state of the present utility model;

[0039] Figure 7 is a schematic diagram of the partially cut state of the present utility model;

[0040] Figure 8 is Figure 7 an enlarged view of circle C;

[0041] Figure 9 is a cross-sectional view of the present utility model along the vertical axis of the centrifugal mounting portion;

[0042] Figure 10 is a cross-sectional view of the present utility model along the vertical axis of a filter mounting portion. Specific Embodiments

[0043] Referring to Figures 1 to 10 , an air filter, comprising:

[0044] a mounting head 100, the mounting head 100 is provided with a centrifugal mounting portion 110 and a plurality of filter mounting portions 120, the centrifugal mounting portion 110 is provided with a centrifugal air inlet 111 and a centrifugal air outlet 112, the filter mounting portion 120 is provided with a filter air inlet 121 and a filter air outlet 122, and the filter air outlet 122 communicates with the adjacent filter air inlet 121;

[0045] a centrifugal separation assembly 200, the centrifugal separation assembly 200 is detachably connected to the centrifugal mounting portion 110, and the centrifugal separation assembly 200 is used for separating solids and liquids in the air flow;

[0046] A number of filtering components 300, the filtering component 300 includes a "7"-shaped inlet pipe fitting 310, a filtering housing 320 and a filtering device 330. The filtering housing 320 is provided with a filtering chamber 321 and an opening 322 connected to the filtering chamber 321. The filtering housing 320 is connected to the filtering mounting portion 120. The filtering device 330 is disposed in the filtering chamber 321. The inner wall of the inlet pipe fitting 310 defines an inlet channel 311. The first end of the inlet pipe fitting 310 is connected to the filtering mounting portion 120. The first end of the inlet channel 311 communicates with the filtering air inlet 121. The second end of the inlet pipe fitting 310 is inserted along the opening 322 and connected to the filtering device 330. An air guiding channel 301 is formed between the outer surface of the inlet pipe fitting 310 and the inner wall of the opening 322. The air guiding channel 301 communicates the filtering chamber 321 with the filtering air outlet 122.

[0047] With the above structure, during use, the airflow generated by the air pump enters the centrifugal separation component 200 along the centrifugal air inlet 111. After separating some impurities such as water, oil droplets and dust, the airflow enters the filtering component 300 along the centrifugal air outlet 112 and the filtering air inlet 121. The first end of the "7"-shaped inlet pipe fitting 310 is connected to the filtering mounting portion 120. The airflow enters the filtering component 300 along the inlet channel 311. After being filtered by the filtering device 330, it flows out to the filtering air outlet 122 along the air guiding channel 301 between the outer surface of the inlet pipe fitting 310 and the inner wall of the opening 322. After passing through the hierarchical filtration of multiple filtering components 300, it finally discharges along the air outlet; the air guiding channel 301 formed between the outer surface of the inlet pipe fitting 310 and the inner wall of the opening 322 is annular and has a larger aperture, and there is no screw passing through the air inlet to connect to the filtering mounting portion 120, so that a larger-size air inlet and air outlet of the filtering component 300 can be set, the air flow channel is unobstructed, and the filtering effect is good.

[0048] In this embodiment, the filtering device 330 is columnar and has a middle channel 331. The middle channel 331 communicates with the second end of the inlet channel 311 to allow the airflow to enter the middle channel 331 and pass through the filtering device 330 into the filtering chamber 321. With the above structure, during use, the airflow passes through the filtering air inlet 121 and the inlet channel 311 and flows into the middle channel 331, which fully increases the contact area between the airflow and the filtering device 330, enables all parts of the filtering component to filter simultaneously, increases the airflow velocity, and has a good filtering effect.

[0049] In this embodiment, the filtering device 330 includes a filter element 332, a support mesh 333, and an end connector 334. The filter element 332 is connected to the support mesh 333, the support mesh 333 is connected to the end connector 334, and the end connector 334 is connected to the second end of the inlet pipe fitting 310. Through the above structure, during installation, by connecting the end connector 334 to the second end of the inlet pipe fitting 310, the filtering device 330 can be fixed. The filter element 332 is disposed between two end connectors 334, and both ends of the support mesh 333 are connected to the two end connectors 334 to fix the filter element 332, making the product connection structure stable.

[0050] In this embodiment, a plurality of the filtering components 300 are arranged in parallel in sequence. Along the direction away from the centrifugal separation component 200, the filtering degree of the filter element 332 of the filtering component 300 gradually increases. Through the above structure, during use, the air flow flows out along the centrifugal air outlet 112 and first flows into a filtering component 300. The filter element 332 of this filtering component 300 has a relatively low filtering degree and can filter impurities with larger particle sizes. After the air flow flows out along this filtering component 300, it flows into the next filtering component 300. The filter element 332 of this filtering component 300 has a relatively high filtering degree and can filter impurities with smaller particle sizes. After layered filtration, impurities such as water, oil droplets, and dust in the air are fully filtered, making the finally flowing out air flow cleaner, and the product has a good filtering effect; moreover, layered filtration can make full use of filter elements with different filtering degrees. While having a good filtering effect, the service life of the filter element is also longer.

[0051] In this embodiment, the centrifugal separation component 200 includes a separation housing 210 and a spiral turbulator 220. The separation housing 210 is provided with a separation chamber 211. The separation housing 210 and the spiral turbulator 220 are connected to the centrifugal mounting portion 110. The spiral turbulator 220 is inserted into the separation chamber 211. The gap formed between the spiral turbulator 220 and the inner wall of the separation chamber 211 communicates with the centrifugal air inlet 111. The surface of the spiral turbulator 220 is provided with a spiral portion 221. The outer surface of the spiral portion 221 abuts against the inner wall of the separation chamber 211. The middle of the spiral turbulator 220 is provided with a return channel 222, and the return channel 222 communicates the separation chamber 211 and the centrifugal air outlet 112. Through the above structure, during use, the air flow enters the separation chamber 211 along the centrifugal air inlet 111 and flows downward along the gap between the spiral turbulator 220 and the inner wall of the separation chamber 211. When flowing through the spiral portion 221, the air flow rotates, and impurities such as water, oil droplets, and dust are thrown onto the inner wall of the separation chamber 211 by centrifugal force, so that the water, oil droplets, and dust and other impurities fall along the inner wall of the separation chamber 211 to the bottom of the separation chamber 211, while the clean air flow flows out along the return channel 222 and the centrifugal air outlet 112.

[0052] In this embodiment, the centrifugal separation assembly 200 further includes a condensation and reflux member 230. The condensation and reflux member 230 is detachably connected to the spiral turbulence member 220 and inserted into the reflux channel 222. The condensation and reflux member 230 is used to condense the liquid droplets and allow the liquid droplets to flow down along the condensation and reflux member 230. With the above structure, during use, when the air flow flows downward through the gap between the spiral turbulence member 220 and the inner wall of the separation chamber 211, part of the water and oil droplets will contact the surface of the condensation and reflux member 230, form larger liquid droplets on the surface of the condensation and reflux member 230, and finally flow downward along the surface of the condensation and reflux member 230 to the bottom of the separation chamber 211 under the action of gravity, realizing gas-liquid separation and further improving the filtering and gas-liquid separation effects of the product.

[0053] In this embodiment, it further includes a liquid outlet plug 400. A liquid outlet 212 communicating with the separation chamber 211 is provided at the bottom of the separation housing 210. The liquid outlet plug 400 is detachably inserted into the liquid outlet 212. With the above structure, during use, the liquid outlet plug 400 is inserted and blocks the liquid outlet 212 to keep the separation chamber 211 sealed, so that the air flow can stably flow out through the reflux channel 222 and the centrifugal air outlet 112; while when cleaning the product, pulling out the liquid outlet plug 400 allows liquids such as water and oil to flow out through the liquid outlet 212, which is convenient for cleaning. At the same time, the separation housing 210 can also be detached to further facilitate cleaning of the product.

[0054] In this embodiment, it further includes a pressure regulating assembly 500. The mounting head 100 is provided with a pressure regulating mounting portion 130. The pressure regulating assembly 500 is detachably connected to the pressure regulating mounting portion 130. The pressure regulating mounting portion 130 communicates with the centrifugal air outlet 112 and is used to adjust the air pressure of the air flow flowing out through the centrifugal air outlet 112. With the above structure, during use, the user can use the pressure regulating assembly 500 to adjust the air pressure of the air flow flowing out through the centrifugal air outlet 112 to meet different usage requirements of the user.

[0055] In this embodiment, the centrifugal mounting portion 110 is provided with a first chamber 101, and the centrifugal mounting portion 110 is provided with a pressure regulating air hole 102 communicating the first chamber 101 and the centrifugal air outlet 112. The pressure regulating assembly 500 includes a connecting housing 510 and a valve assembly. The connecting housing 510 is provided with a connecting chamber 511 and an air leakage hole 512 communicating with the connecting chamber 511. The valve assembly is disposed between the first chamber 101 and the connecting chamber 511. When the air pressure in the first chamber 101 is greater than the pressure required for the valve assembly to open, the valve assembly opens to allow air flow to pass through the connecting chamber 511 from the first chamber 101 and be discharged along the air leakage hole 512. Through the above structural arrangement, the first chamber 101 and the centrifugal air outlet 112 are communicated through the pressure regulating air hole 102, so the air pressure in the first chamber 101 is similar to the air pressure at the centrifugal air outlet 112. When the air pressure in the first chamber 101 is greater than the pressure required for the valve assembly to open, the air valve opens, and part of the air flow passes through the valve assembly and is discharged along the connecting chamber 511 and the air leakage hole 512, reducing the air pressure in the first chamber 101 and at the centrifugal air outlet 112. When the air pressure in the first chamber 101 is less than or equal to the pressure required for the valve assembly to open, the valve assembly closes, and the air flow flows out along the centrifugal air outlet 112. The user can manually adjust the pressure required for the valve assembly to open, thereby adjusting the air pressure at the centrifugal air outlet 112.

[0056] In this embodiment, the valve assembly includes a first elastic member 520, a diaphragm 530, and a valve rod 540. The first elastic member 520 is disposed in the connecting chamber 511. The diaphragm 530 is provided with an air valve hole 531. The valve rod 540 is disposed in the centrifugal mounting portion 110. The elastic force of the first elastic member 520 drives the diaphragm 530 downward, so that the upper end of the valve rod 540 is inserted into the air valve hole 531 and abuts against the edge of the air valve hole 531. Through the above structural arrangement, when the air pressure in the first chamber 101 is greater than the elastic force of the first elastic member 520, the air pressure drives the middle line of the diaphragm to bulge. At this time, the air valve hole 531 is separated from the upper end of the valve rod 540, and the air valve hole 531 opens. The gas is discharged along the air valve hole 531, the connecting chamber 511, and the air leakage hole 512 to reduce the air pressure of the air flow flowing out along the centrifugal air outlet 112, so that it finally matches the elastic force of the first elastic member 520. When the air pressure in the first chamber 101 decreases to be less than or equal to the elastic force of the first elastic member 520, the elastic force of the first elastic member 520 causes the diaphragm 530 to have a downward movement tendency, and the air valve hole 531 is blocked by the upper end of the valve rod 540.

[0057] In this embodiment, the pressure regulating assembly 500 further includes a spiral adjusting housing 550, a screw member 560, and a nut seat 570. The spiral adjusting housing 550 is rotatably connected to the connection housing 510. The screw member 560 is connected to the connection housing 510. The nut seat 570 is threadedly connected to the screw member 560. The nut seat 570 is connected to the upper end of the first elastic member 520, and the lower end of the first elastic member 520 abuts against the upper surface of the diaphragm 530. With the above structure, during use, the user can turn the spiral adjusting housing 550. The spiral adjusting housing 550 drives the screw member 560 to rotate, and the nut seat 570 moves upward or downward relative to the screw member 560, thereby compressing or releasing the first elastic member 520 to adjust the elastic force of the first elastic member 520, and further adjusting the air pressure of the air flow flowing out along the centrifugal air outlet 112.

[0058] In this embodiment, the valve assembly further includes a second elastic member 580 and a valve seat 590. The valve seat 590 is connected to the bottom of the valve stem 540. One end of the second elastic member 580 abuts against the valve seat 590, and the other end of the second elastic member 580 abuts against the inside of the mounting head 100. With the above structure, when the air pressure in the first chamber 101 is less than or equal to the elastic force of the first elastic member 520, the elastic force of the first elastic member 520 causes the diaphragm 530 to tend to move downward. The air valve hole 531 is blocked by the upper end of the valve stem 540 and drives the valve stem 540 to move downward. The second elastic member 580 is compressed and deformed. At this time, there is a gap between the valve seat 590 and the inner wall of the cavity of the mounting head 100. This gap allows the air flow to pass through, so as to increase the air flow rate, and further increase the air pressure at the centrifugal air outlet 112, as Figure 4 . When the air pressure in the first chamber 101 is greater than the elastic force of the first elastic member 520, the air pressure drives the middle line of the diaphragm to bulge. At this time, the air valve hole 531 is separated from the upper end of the valve stem 540. The valve seat 590 moves upward under the action of the elastic restoring force of the second elastic member 580 and abuts against the inner wall of the cavity of the mounting head 100. The air valve hole 531 is opened, and the gas is discharged along the air valve hole 531, the connection chamber 511, and the air vent hole 512. At the same time, the gap between the valve seat 590 and the inner wall of the cavity of the mounting head 100 is closed, as Figure 5 . To reduce the air flow rate, and further reduce the air pressure of the air flow flowing out along the centrifugal air outlet 112. Finally, under the action of the elastic force of the first elastic member 520, the second elastic member 580, and the air pressure, the gap between the valve seat 590 and the inner wall of the cavity of the mounting head 100 reaches an appropriate width, so that the elastic force of the first elastic member 520, the second elastic member 580, and the air pressure reach balance, and the air pressure is stabilized.

[0059] In this embodiment, a valve rod passage 541 and valve rod air holes 542 passing through the side wall of the valve rod passage 541 are provided in the valve rod 540. The valve rod passage 541 communicates with the separation chamber 211, and the valve rod air holes 542 communicate the valve rod passage 541 with the centrifugal air outlet 112. With the above structure, during use, regardless of whether the gap between the valve seat 590 and the inner wall of the cavity of the mounting head 100 is open or closed, air can flow into the centrifugal air outlet 112 along the valve rod passage 541 and the valve rod air holes 542, ensuring the conduction of the air flow passage.

[0060] In this embodiment, a first pressure gauge 600 is further included. The first pressure gauge 600 is connected to the centrifugal mounting portion 110 of the mounting head 100. The mounting head 100 is provided with a first pressure gauge passage 103, and the first pressure gauge passage 103 communicates with the air inlet of the first pressure gauge 600 and the... With the above structure, during use, the first pressure gauge passage 103 communicates the air inlet of the first pressure gauge 600 with the centrifugal air outlet 112, enabling the first pressure gauge 600 to measure the air pressure at the centrifugal air outlet 112 and display the data. When the user manually adjusts the screw adjustment housing 550, the air pressure data can be visually observed, and the appropriate operating air pressure can be selected accordingly to meet the user's usage requirements.

[0061] In this embodiment, a second pressure gauge 700 is further included. The second pressure gauge 700 is connected to one of the filter mounting portions 120 of the mounting head 100. The mounting head 100 is provided with a second pressure gauge passage 104, and the second pressure gauge passage 104 communicates with the air inlet of the second pressure gauge 700 and the introduction passage 311. With the above structure, during use, air flows from the introduction passage 311 and enters the air inlet of the second pressure gauge 700 along the second pressure gauge passage 104, enabling the second pressure gauge 700 to measure and display the air pressure in the introduction passage 311, realizing human-machine interaction and facilitating the user to understand the working state of the product.

[0062] In this embodiment, the condensation reflux member 230 includes a cylindrical condensation pipe 231 and a connection seat 232. The condensation pipe 231 is provided with a connection channel 2311. The screw portion 2321 of the connection seat 232 passes through the connection channel 2311 and is connected to the spiral turbulator 220. The upper end of the condensation pipe 231 abuts against the spiral turbulator 220, and the lower end of the condensation pipe 231 abuts against the abutting portion 2322 of the connection seat 232. Through the above structural arrangement, during installation, the condensation pipe 231 is sleeved on the connection seat 232, the screw portion 2321 of the connection seat 232 passes through the connection channel 2311 and is connected to the spiral turbulator 220, and the connection seat 232 is screwed until the upper end of the condensation pipe 231 abuts against the spiral turbulator 220, and the upper end of the condensation pipe 231 abuts against the abutting portion 2322 of the connection seat 232. The product structure is simple and the connection is stable.

[0063] In this embodiment, an inclined diversion slope 2323 is provided at the bottom edge of the connection seat 232. There is a gap 201 between the edge of the connection seat 232 and the separation housing 210, and the gap 201 allows liquid to flow through. Through the above structural arrangement, during use, the liquid droplets flowing downward along the surface of the condensation reflux member 230 continue to flow downward along the diversion slope 2323, and when passing through the gap 201, they contact the inner wall of the separation housing 210, converge with the liquid on the inner wall of the separation housing 210 to form larger liquid droplets and continue to flow downward along the inner wall of the separation housing 210, improving the liquid flow rate of the product.

[0064] In this embodiment, an air inlet cover 800 is further included. The air inlet cover 800 is detachably connected to the mounting head 100 and covers the centrifugal air inlet 111. Through the above structural arrangement, when the product is stored, the air inlet cover 800 can be connected to the mounting head 100, inserted and covered on the centrifugal air inlet 111 to prevent impurities from entering the product along the centrifugal air inlet 111, ensuring the use safety of the product and extending the service life of the product.

[0065] In this embodiment, friction stripes 551 are further provided on the surface of the spiral adjustment housing 550. Through the above structural arrangement, the friction stripes 551 can increase the friction coefficient of the surface of the spiral adjustment housing 550, making it easier and more labor-saving for the user to rotate the spiral adjustment housing 550.

[0066] In this embodiment, an air flow guiding mark 140 is further provided on the mounting head 100. The air flow guiding mark 140 is used to mark the flow direction of the air flow. Through the above structural arrangement, setting the air flow guiding mark 140 allows the user to intuitively understand the air flow direction, so as to correctly connect the air pump to the product, make the air outlet communicate with the centrifugal air inlet 111, prevent product damage caused by user's incorrect operation, improve the user experience, ensure the user's property safety, and extend the service life of the product.

[0067] As described above, one or more embodiments are provided in combination with specific contents, and it is not determined that the specific implementation of the present utility model is limited only to these descriptions. Any method, structure, etc. that is similar or identical to the present utility model, or any technical deduction or replacement made on the premise of the concept of the present utility model, should be regarded as within the protection scope of the present utility model.

Claims

1. An air filter, characterized in that: include: A mounting head (100), the mounting head (100) being provided with a centrifugal mounting portion (110) and a plurality of filter mounting portions (120), the centrifugal mounting portion (110) being provided with a centrifugal air inlet (111) and a centrifugal air outlet (112), the filter mounting portion (120) being provided with a filter air inlet (121) and a filter air outlet (122), the filter air outlet (122) being connected to an adjacent filter air inlet (121); A centrifugal separation assembly (200), the centrifugal separation assembly (200) being detachably connected to the centrifugal mounting portion (110), the centrifugal separation assembly (200) being used to separate solids and liquids in an airflow; A plurality of filter assemblies (300), the filter assemblies (300) comprising a "7"-shaped introduction pipe (310), a filter housing (320) and a filter device (330), the filter housing (320) being provided with a filter cavity (321) and an opening (322) connected to the filter cavity (321), the filter housing (320) being connected to the filter mounting portion (120), the filter device (330) being arranged in the filter cavity (321), and the inner wall of the introduction pipe (310) defining an introduction channel (311) 1), the first end of the introduction pipe (310) is connected to the filter mounting portion (120), the first end of the introduction channel (311) is connected to the filter air inlet (121), the second end of the introduction pipe (310) is inserted along the opening (322) and connected to the filter device (330), an air guide channel (301) is formed between the outer surface of the introduction pipe (310) and the inner wall of the opening (322), and the air guide channel (301) connects the filter cavity (321) with the filter air outlet (122).

2. The air filter according to claim 1, characterized in that The filter device (330) is columnar and has an intermediate channel (331), wherein the intermediate channel (331) is connected to the second end of the introduction channel (311) to allow airflow to enter the intermediate channel (331) and pass through the filter device (330) to enter the filter cavity (321); wherein the filter device (330) comprises a filter element (332), a support net (333) and an end connector (334), wherein the filter element (332) is connected to the support net (333), the support net (333) is connected to the end connector (334), and the end connector (334) is connected to the second end of the introduction pipe (310).

3. The air filter according to claim 1, characterized in that The centrifugal separation assembly (200) comprises a separation shell (210) and a spiral spoiler (220); the separation shell (210) is provided with a separation chamber (211); the separation shell (210) and the spiral spoiler (220) are connected to the centrifugal mounting portion (110); the spiral spoiler (220) is inserted into the separation chamber (211); a gap formed between the spiral spoiler (220) and the inner wall of the separation chamber (211) is connected to the centrifugal air inlet (111); a spiral portion (221) is provided on the surface of the spiral spoiler (220); the outer surface of the spiral portion (221) abuts against the inner wall of the separation chamber (211); a reflux channel (222) is provided in the middle of the spiral spoiler (220); the reflux channel (222) connects the separation chamber (211) and the centrifugal air outlet (112).

4. The air filter according to claim 3, characterized in that The centrifugal separation component (200) also includes a condensation reflux member (230), which is detachably connected to the spiral spoiler (220) and inserted into the reflux channel (222). The condensation reflux member (230) is used to condense droplets and allow the droplets to flow down along the condensation reflux member (230).

5. The air filter according to claim 3, characterized in that It also comprises a liquid outlet plug (400); a liquid outlet (212) connected to the separation chamber (211) is provided at the bottom of the separation shell (210); and the liquid outlet plug (400) is detachably inserted into the liquid outlet (212).

6. The air filter according to claim 5, characterized in that The invention also comprises a pressure regulating assembly (500), wherein the mounting head (100) is provided with a pressure regulating mounting portion (130), the pressure regulating assembly (500) is detachably connected to the pressure regulating mounting portion (130), the pressure regulating mounting portion (130) is connected to the centrifugal air outlet (112) and is used to adjust the air pressure of the airflow flowing out along the centrifugal air outlet (112); wherein the centrifugal mounting portion (110) is provided with a first chamber (101), and the centrifugal mounting portion (110) is provided with a pressure regulating air hole (101) connecting the first chamber (101) and the centrifugal air outlet (112). 2), the pressure regulating assembly (500) comprises a connecting shell (510) and a valve assembly, the connecting shell (510) is provided with a connecting chamber (511) and an air leakage hole (512) connected to the connecting chamber (511), the valve assembly is arranged between the first chamber (101) and the connecting chamber (511), when the air pressure in the first chamber (101) is greater than the pressure required for the valve assembly to open, the valve assembly opens to allow air flow from the first chamber (101) to flow through the connecting chamber (511) and be discharged along the air leakage hole (512).

7. The air filter according to claim 6, characterized in that The valve assembly comprises a first elastic member (520), a diaphragm (530) and a valve stem (540); the first elastic member (520) is arranged in the connecting chamber (511); the diaphragm (530) is provided with an air valve hole (531); the valve stem (540) is arranged in the centrifugal mounting portion (110); the elastic force of the first elastic member (520) drives the diaphragm (530) downward, so that the upper end of the valve stem (540) is inserted into the air valve hole (531) and abuts against the edge of the air valve hole (531); The pressure regulating assembly (500) further includes a spiral regulating housing (550), a screw member (560) and a nut seat (570), wherein the spiral regulating housing (550) is rotatably connected to the connecting housing (510), the screw member (560) is connected to the connecting housing (510), the nut seat (570) is threadedly connected to the screw member (560), the nut seat (570) is connected to the upper end of the first elastic member (520), and the lower end of the first elastic member (520) abuts against the upper surface of the diaphragm (530).

8. The air filter according to claim 7, characterized in that The valve assembly also includes a second elastic member (580) and a valve seat (590), wherein the valve seat (590) is connected to the bottom of the valve stem (540), one end of the second elastic member (580) abuts against the valve seat (590), and the other end of the second elastic member (580) abuts against the inside of the mounting head (100).

9. The air filter according to claim 7, characterized in that The valve stem (540) is provided with a valve stem channel (541) and a valve stem air hole (542) passing through the side wall of the valve stem channel (541); the valve stem channel (541) is connected to the separation chamber (211); and the valve stem air hole (542) connects the valve stem channel (541) with the centrifugal air outlet (112).

10. The air filter according to claim 1, characterized in that It also includes a first barometer (600), the first barometer (600) being connected to the centrifugal mounting portion (110) of the mounting head (100), the mounting head (100) being provided with a first barometer channel (103), the first barometer channel (103) being connected to the air inlet of the first barometer (600) and the centrifugal air outlet (112).

Images