CN211777763U

CN211777763U - Dry type air filter

Info

Publication number: CN211777763U
Application number: CN202020334231.7U
Authority: CN
Inventors: 赵绍兴
Original assignee: Individual
Current assignee: Qinghe County Zhongtong Metal Co ltd
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-10-27
Anticipated expiration: 2030-03-17

Abstract

The utility model provides a dry-type air cleaner relates to the automobile auxiliary component field. The dry air filter comprises a shell, wherein a filter element and a back blowing device are arranged in the shell, an air storage cylinder and a control device are connected outside the shell, and the shell is formed by vertically intersecting two filter cylinders; the interior of the shell is distributed into a first-stage air inlet chamber, a second-stage air inlet chamber and a clean air chamber which are sequentially communicated through a perforated partition plate; a first-stage filter element is arranged in the first-stage air inlet cavity, and a second-stage filter element is arranged in the second-stage air inlet cavity; and the air outlet end of the back blowing device extends into the primary air inlet chamber and faces to the end opposite to the secondary air inlet chamber. The filter adopts two-stage dry type filtering, has compact structure, convenient installation and replacement, good filtering effect, strong installation adaptability and convenient maintenance, effectively reduces the environmental pollution, reduces the maintenance period and the labor intensity of workers to the filter element, and prolongs the service life of the key components of relevant vehicles and equipment.

Description

Dry type air filter

Technical Field

The utility model belongs to the technical field of car auxiliary assembly technique and specifically relates to a dry-type air cleaner is related to.

Background

For automobiles such as dump trucks, tractors and trucks which often work in dusty environments, air filters are usually installed to purify air sucked by an internal combustion engine or an engine and protect the normal operation of the engine.

The existing air filter installed on an automobile mainly comprises the following four forms:

(1) the air filter of the dry-type paper core, the maintenance of this apparatus is very arduous, should disassemble the filter core, beat lightly or utilize compressed air to carry on the back flushing on the ground, blow the dust that the external surface of filter paper adheres away from the filter core, reach the clean ventilative effect of the filter core, will destroy the paper filter core carelessly slightly, and utilize the compressed air to blow back and waste the power, will pollute the secondary dust of the peripheral environment, unfavorable for environmental protection, need change new directly, cause very large waste;

(2) the wet-type oil bath air filter utilizes the characteristic that lubricating oil is not dry, a plurality of metal wire nets or metal wires are coated with oil in the filter, dust-carrying air adheres dust to the metal wire nets or the metal wires when passing through the filter, so that the filter is realized, fine dust cannot be filtered due to larger gaps of the metal wire nets or the metal wires, the filter effect is poor, in addition, the maintenance is troublesome, the metal wires or the metal wires need to be disassembled, burnt to dry by fire or cleaned by washing oil, secondary pollution to the surrounding environment is serious, new lubricating oil needs to be filled after the cleaning is finished, and the maintenance cost is increased;

(3) the wet filter and the dry filter are connected in series for use, the filtering effect is slightly better, but oil stains in the wet filter are adhered to the dry paper core, so that the paper core cannot be cleaned and maintained and can only be replaced, and the maintenance cost is higher;

(4) the dry air purification device is serially connected and modified outside an air filter of original equipment or a vehicle to serve as auxiliary filtration, the automatic dust removing and dust discharging function is achieved, air inlet resistance is greatly increased, integration level of the device is not enough, especially, a back blowing device is temporarily spliced by non-professional parts, modification adaptability of different equipment is poor, and batch production investment capacity is not achieved.

No matter which filter of the above three forms (1), (2) and (3) is used, the filter needs to be maintained in time, the environment with too high dust needs to be maintained once a day or eight hours, otherwise, the engine or equipment cannot be smoothly sucked, the power of the engine is reduced, black smoke is emitted, lubricating oil and fuel consumption are increased. If the filter element has a powder leakage phenomenon slightly, dust enters the interior of the engine, the loss caused by the dust is larger, the engine has to be overhauled once a year, the influence on the service life of the engine is large, the faults, the maintenance cost and fuel oil are correspondingly increased, the workload of a driver and a maintainer is greatly increased, the energy is wasted when the original vehicle compressed air is used for blowing the air filter during maintenance, and the environment is polluted. Above (4) kind of filter has automatic dust removal effect, but the integrated level is too poor, can not reequip original oil bath and the empty filter of desert formula, increases the air intake resistance of original vehicle or equipment, causes the influence of admitting air to key equipment such as engine, reduces engine power and effectively exerts.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dry-type air filter, which is used for solving at least one technical problem, adopts two-stage dry-type filtration, has compact structure, high integration, convenient installation, replacement and installation, has the effect of automatic back-blowing and dust removal on a first-stage filter element, has the effect of dust removal on a second-stage filter element, and reduces the air inlet resistance of an engine; the installation adaptability is strong, and the structural adaptability of developing, designing and installing different types of air filters is wide after the back-flushing dust removal device is integrated; operators or drivers do not need to maintain the filter element frequently and do not need to remember to start the dust removal device at any time; the environmental pollution is reduced, the maintenance period and the labor intensity of workers on the filter element are reduced, and the service life of key components of relevant vehicles and equipment is effectively prolonged.

The embodiment of the utility model is realized like this:

the utility model provides a formula air cleaner, includes the casing, be provided with filter core and blowback device in the casing, the casing is connected with air receiver and controlling means outward, the casing is crossed mutually perpendicularly by two straining a section of thick bamboo and is formed.

The inside of the shell is distributed into a first-stage air inlet chamber, a second-stage air inlet chamber and a clean air chamber which are communicated in sequence through a perforated partition plate.

The air conditioner is characterized in that a first-stage filter element is arranged in the first-stage air inlet cavity, and a second-stage filter element is arranged in the second-stage air inlet cavity.

And the air outlet end of the back blowing device extends into the primary air inlet chamber and faces to the end opposite to the secondary air inlet chamber.

In a preferred embodiment of the present invention, the back-blowing device of the dry air filter includes an electromagnetic valve, an exhaust valve and a back-blowing nozzle; the air outlet end of the electromagnetic valve is connected with the air inlet end of the exhaust valve through a connecting pipe; the air outlet end of the exhaust valve is connected with the air inlet end of the back blowing nozzle through a back blowing pipe; and the air outlet end of the back-blowing spray head extends into the primary air inlet chamber and faces to the end opposite to the secondary air inlet chamber.

The technical effects are as follows: pneumatic turbulence is formed in the secondary air inlet chamber, so that dust adhered to the outer surface of the primary and secondary filter elements is shaken off, and the two-stage filtering effect is excellent and is superior to the filtering effect of the existing primary dry type, primary wet type and dry-wet series air filter; the back-blowing dust exhaust device has high integration, is superior to the prior technical scheme, and is suitable for refitting vehicles and engineering operation mechanical equipment with the same specification.

In a preferred embodiment of the present invention, the control device of the dry air cleaner includes a controller and a switch assembly; the input end of the switch assembly is electrically connected with a power supply; the output end of the switch assembly is electrically connected with the input end of the controller; the output end of the controller is electrically connected with the electromagnetic valve through an electric wiring.

In a preferred embodiment of the present invention, the switch assembly of the dry air cleaner includes a key switch, a manual switch and an automatic switch; the input end of the key switch is electrically connected with a power supply; the output end of the key switch comprises a first output end and a second output end, the first output end is connected with the manual switch, and the second output end is connected with the automatic switch; the controller is provided with a first input end and a second input end; the output end of the manual switch is electrically connected with the first input end of the controller; the output end of the automatic switch is electrically connected with the second input end of the controller; electronic and electric components are arranged in the controller; two electrical wiring terminals are arranged on the electromagnetic valve; the output end of the controller is connected with the electromagnetic valve through two electric wiring terminals.

The technical effects are as follows: the controller automatically monitors the running condition of the engine, gives a pulse signal, opens a high-pressure air inlet switch of the back-blowing dust removal device, forms pulsating airflow jet, and forms pneumatic turbulence in the clean air cavity so as to shake off dust adhered to the outer surface of the filter element; besides the function of automatically monitoring the engine to stop and blow back, the automatic engine stopping and blowing device is also provided with the functions of manual blowing and regular automatic blowing and cleaning, pulse signal output is completed through the setting and matching of a manual switch and a controller, and the function of opening and closing the electromagnetic valve to release pulse airflow in time is realized.

In a preferred embodiment of the present invention, the secondary air inlet chamber of the dry air cleaner is connected to the end of the primary air inlet chamber; the clean air chamber is connected with the tail end of the secondary air chamber; a filtering air inlet is formed in one end of the primary air inlet chamber, which is opposite to the secondary air inlet chamber; and an air filter air outlet is formed in one end of the clean air chamber opposite to the secondary air inlet chamber.

In a preferred embodiment of the present invention, the second filter element of the dry air filter is disposed at an end of the second air inlet chamber, which is far away from the first air inlet chamber, and is perpendicular to the first filter element.

The technical effects are as follows: the ash removal of the outer surface of the first-stage and second-stage filter elements is carried out simultaneously, and the maintenance frequency of the second-stage filter elements is greatly reduced.

In a preferred embodiment of the present invention, an air inlet end of the air reservoir of the dry air filter is connected to an air outlet end of the high pressure inlet pipe; the air outlet end of the high-pressure air inlet pipe is provided with a one-way valve; and the air outlet end of the air cylinder is connected with the connecting pipe through a high-pressure air outlet pipe.

In a preferred embodiment of the present invention, the primary air inlet chamber of the dry air cleaner is disposed at the bottom of the housing; a dust collecting funnel is arranged at the bottom of the primary progressive air chamber; the bottom end of the dust collecting funnel is provided with a dust exhaust valve; the dust exhaust valve is a rubber dust exhaust valve.

In a preferred embodiment of the present invention, a drain valve is disposed at the bottom of the air reservoir of the dry air filter.

The embodiment of the utility model provides a beneficial effect is:

can replace the air cleaner of original vehicle, equipment, utilize the air pump and the energy storage gas receiver of original vehicle, equipment to provide the air supply, through automatically controlled valve and discharge valve, the combination is the air-flowing type air jet system that automatic blowback removed dust, accomplishes from the filter core inner chamber blowback, forms the air current disturbance in the second grade air inlet chamber, makes one-level filter core and second grade filter core vibration, and the dust of filter core surface adhesion can effectively shake off, reduces the artifical cycle of dismantling the maintenance filter core of initiative.

The improved air filter has wide refitting adaptability, can replace the original wet oil bath and desert air filter, has wider adaptability than the existing air filter of the additional device for automatically discharging dust, and greatly reduces the comprehensive air inlet resistance compared with the existing air filter of the additional device for automatically discharging dust.

The structure integrated level is good, the installation, the replacement repacking is convenient, reduce the engine resistance of admitting air, installation strong adaptability, the back is integrated to the blowback dust collector, develop the air cleaner of different types, the design, the structure adaptability of installation is also very extensive, operator or driver need not often to maintain the filter core, do not need to remember when also turning on dust collector, maintenance intensity of labour reduces, reduce environmental pollution, reduce the maintenance cycle and the intensity of labour of workman to the filter core, the life of relevant vehicle, the key parts of equipment has effectively been prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

The dry air cleaner of the present invention will be described in further detail with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic view of a dry air filter according to the present invention;

fig. 2 is a schematic structural view of another blowback device of the dry air cleaner of the present invention.

In the figure: 1-a shell; 2-a secondary filter element; 3-a controller; 4-an electromagnetic valve; 5-an exhaust valve; 6-a blowback gas pipe; 7-a secondary air inlet chamber; 8-a progressive gas chamber; 9-air filter air inlet; 10-a first-stage filter element; 11-a dust collecting funnel; 12-a dust exhaust valve; 13-a water drain valve; 14-an air cylinder; 15-blowback spray head; 16-a connecting tube; 17-a one-way valve; 18-high pressure gas inlet; 19-high pressure air inlet pipe; 20-high pressure air outlet pipe; 21-air filter air port; 22-clean air chamber; 23-an explosive head; 24-a key switch; 25-a manual switch; 26-automatic switch.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The utility model discloses an embodiment is shown in fig. 1, and this embodiment provides a dry-type air cleaner, including casing 1, be provided with filter core and blowback device in the casing 1, casing 1 outer joint has gas receiver 14 and controlling means, casing 1 is strained perpendicularly by two and is run through mutually and form.

The interior of the shell 1 is divided into three chambers which are communicated in sequence, namely a primary air inlet chamber 8, a secondary air inlet chamber 7 and a clean air chamber 22, by perforated clapboards.

A first-stage filter element 10 is arranged in the first-stage gas inlet cavity 8, and a second-stage filter element 2 is arranged in the second-stage gas inlet cavity 7.

The first-stage filter element 10 is made of non-woven fabrics, the filtering efficiency is superior to that of a wet oil bath, and the maintenance and the cleaning are very convenient.

The air outlet end of the back blowing device extends into the first-stage air inlet chamber 8 and faces to the end opposite to the second-stage air inlet chamber 7.

The back-blowing device comprises an electromagnetic valve 4, an exhaust valve 5 and a back-blowing nozzle 15.

The air outlet end of the electromagnetic valve 4 is connected with the air inlet end of the exhaust valve 5 through a connecting pipe 16.

The air outlet end of the exhaust valve 5 is connected with the air inlet end of the blowback nozzle 15 through a blowback air pipe 6.

The air outlet end of the blowback nozzle 15 extends into the first-stage air inlet chamber 8 and faces to the end opposite to the second-stage air inlet chamber 7.

The air inlet end of the air cylinder 14 is connected with the air outlet end of the high-pressure air inlet pipe 19.

The outlet end of the high-pressure inlet pipe 19 is provided with a check valve 17.

The air outlet end of the air cylinder 14 is connected with the connecting pipe 16 through a high-pressure air outlet pipe 20.

The electromagnetic valve 4 and the exhaust valve 5 are fixed in the middle of the secondary stage gas inlet chamber 7.

The distance between the air outlet end of the blowback pipe 6 and the central hole of the partition plate with holes of the primary stage air inlet chamber 8 is 3-5 cm.

The gas cylinder 14 is made of steel and is pressure-resistant to 1.0 Mpa.

The air reservoir 14 and the housing 1 may be assembled on the same mounting frame.

The air cylinder 14 obtains compressed air of original equipment through a high-pressure air inlet pipe 19 and a one-way valve 17, a high-pressure air inlet 18 of the high-pressure air inlet pipe 19 is connected with a high-pressure air storage chamber of the original equipment, and a high-pressure air outlet pipe 20 is connected with the electromagnetic valve 4 and the exhaust valve 5 to form a back-flushing air flow air supply passage to provide an air flow air supply source for back-flushing dust removal. When dust removal works, the back-blowing airflow is blown to the back-blowing nozzle 15 through the high-pressure air outlet, a local vortex is formed in the inner cavity of the first-stage filter element 10, adhesion dust on the outer surface of the back-blowing first-stage filter element 10 falls into the first-stage air inlet chamber 8 and the dust collecting hopper 11, the back-blowing airflow simultaneously forms turbulence to air in the second-stage air inlet chamber 7, and dust adhered to the outer surface of the second-stage filter element 2 also forms an ash removal effect.

Pneumatic turbulence is formed in the secondary air inlet chamber 7 so as to shake off dust adhered to the outer surface of the primary and secondary filter element 2, and the two-stage filtering effect is excellent and superior to the filtering effect of the existing primary dry type, primary wet type and dry and wet series air filter; the back-blowing dust exhaust device has high integration, is superior to the prior technical scheme, and is suitable for refitting vehicles and engineering operation mechanical equipment with the same specification.

The control device comprises a controller 3 and a switch assembly.

The input end of the switch component is electrically connected with a power supply.

The output end of the switch assembly is electrically connected with the input end of the controller 3.

The output end of the controller 3 is electrically connected with the electromagnetic valve 4 through an electric wiring.

The switch assembly includes a key switch 24, a manual switch 25 and an automatic switch 26.

The input of the key switch 24 is electrically connected to a power source.

The output end of the key switch 24 includes a first output end connected to the manual switch 25 and a second output end connected to the automatic switch 26.

The controller 3 is provided with a first input and a second input.

An output of the manual switch 25 is electrically connected to a first input of the controller 3.

An output of the automatic switch 26 is electrically connected to a second input of the controller 3.

And electronic and electric components are arranged in the controller 3.

And two electrical wiring terminals are arranged on the electromagnetic valve 4.

The output end of the controller 3 is connected with the electromagnetic valve 4 through two electric wiring terminals.

The control device has the following three functions:

(1) manual blowing function: the manual switch 25 belongs to a normally-off button switch, can directly control the pulse signal supplied to the electromagnetic valve 4, is in a disconnected state when not controlled, and completes the pulse signal output by the setting and matching of the manual switch 25 and the controller 3, thereby realizing the function of timely opening and closing the electromagnetic valve 4 to release the pulse airflow.

(2) Automatic clear function of blowing: the controller 3 sets the function of periodically or regularly supplying pulse signals to the electromagnetic valve 4, automatically monitors the running working condition of the engine, gives pulse signals, opens a high-pressure air inlet switch of the back flushing device, forms pulsating air flow jet, and forms pneumatic turbulence in the clean air cavity so as to shake off dust adhered to the outer surface of the filter element.

(3) The automatic monitoring engine stops the blowback function: the controller 3 and the automatic switch 26 supply pulse signals to the electromagnetic valve 4 at the moment when the motor vehicle or mechanical equipment stops working, and the electromagnetic valve is automatically disconnected from the power supply after the working is finished.

The secondary stage inlet chamber 7 is connected to the rear end of the primary stage inlet chamber 8.

The clean air chamber 22 is connected to the rear end of the secondary air chamber 7.

And an air filter inlet 9 is formed in one end of the first-stage air chamber 8 opposite to the second-stage air chamber 7.

And an air filtering air outlet 21 is formed at one end of the clean air chamber 22 opposite to the secondary air chamber 7.

The air filter air inlet 9 is connected with a high air inlet interface of a vehicle or equipment, mixed air enters the first-stage air inlet chamber 8, clean air filtered by the first-stage filter element 10 enters the second-stage air inlet chamber 7, clean air filtered by the second-stage filter element 2 continuously enters the clean air chamber 22, and the clean air is supplied to an engine or compression equipment through an external air suction rubber tube, so that the engine or the compression air pump is ensured to obtain clean air.

The second-stage filter element 2 is arranged at one end, far away from the first-stage air inlet chamber 8, in the second-stage air inlet chamber 7 and is perpendicular to the first-stage filter element 10.

The ash removal of the outer surface of the secondary filter element 2 is carried out simultaneously, and the maintenance frequency of the secondary filter element 2 is greatly reduced.

The primary inlet chamber 8 is disposed at the bottom of the housing 1.

The bottom of the primary progressive air chamber 8 is provided with a dust collection funnel 11.

The bottom end of the dust collecting funnel 11 is provided with a dust exhaust valve 12.

The dust exhaust valve 12 is a rubber dust exhaust valve 12.

After the dust in the dust collecting hopper 11 is gathered to a certain amount, the change of the working load condition of the equipment can cause the change of the air flow pressure difference in the first-stage air inlet chamber 8 when the (vehicle) accelerates (negative pressure) or decelerates, the rubber dust exhaust valve 12 can be automatically closed when the air is accelerated, and the rubber dust exhaust valve 12 can be automatically opened to exhaust dust when the air is decelerated or reversely blown to remove dust.

The bottom of the air cylinder 14 is provided with a water drain valve 13.

Another embodiment of the present invention is shown in fig. 1 to 2, in which the blowback nozzle 15 can be replaced by an explosive head 23. The blowback nozzle 15 can realize that high-pressure air current passes through the blowback gas pipe 6, behind the high-pressure gas outlet of blowback gas pipe 6, the inner chamber of one-level filter core 10 forms comparatively even pressure distribution, prevents that the filter core is destroyed because of local pressure is too big on the refill inner chamber fold layer surface of one-level filter core 10. Due to the installation structure and special requirements, the blowback nozzle 15 can be replaced by the blasting head 23 to accomplish the same function. The explosion head 23 is a hexagonal or cylindrical metal end socket with internal threads, the end socket is a conical surface or a spherical segment surface, 36, 24, 18 vent holes with the same number, specification and size are uniformly distributed, the vent holes and the internal thread holes are radially communicated, and the same function as a back-blowing nozzle can be realized.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A dry-type air filter comprises a shell, wherein a filter element and a back blowing device are arranged in the shell, and an air storage cylinder and a control device are connected outside the shell;

the interior of the shell is distributed into a first-stage air inlet chamber, a second-stage air inlet chamber and a clean air chamber which are sequentially communicated through a perforated partition plate;

a first-stage filter element is arranged in the first-stage air inlet cavity, and a second-stage filter element is arranged in the second-stage air inlet cavity;

2. The dry air cleaner according to claim 1, wherein the blowback device comprises a solenoid valve, an exhaust valve, and a blowback nozzle;

the air outlet end of the electromagnetic valve is connected with the air inlet end of the exhaust valve through a connecting pipe;

the air outlet end of the exhaust valve is connected with the air inlet end of the back blowing nozzle through a back blowing pipe;

and the air outlet end of the back-blowing spray head extends into the primary air inlet chamber and faces to the end opposite to the secondary air inlet chamber.

3. The dry air cleaner as claimed in claim 2, wherein the control device includes a controller and a switch assembly;

the input end of the switch assembly is electrically connected with a power supply;

the output end of the switch assembly is electrically connected with the input end of the controller;

and the output end of the controller is electrically connected with the electromagnetic valve.

4. The dry air cleaner of claim 3, wherein the switch assembly includes a key switch, a manual switch, and an automatic switch;

the input end of the key switch is electrically connected with a power supply;

the output end of the key switch comprises a first output end and a second output end, the first output end is connected with the manual switch, and the second output end is connected with the automatic switch;

the controller is provided with a first input end and a second input end;

the output end of the manual switch is electrically connected with the first input end of the controller;

and the output end of the automatic switch is electrically connected with the second input end of the controller.

5. The dry air cleaner according to claim 1,

the secondary stage air inlet chamber is connected with the tail end of the primary stage air inlet chamber;

the clean air chamber is connected with the tail end of the secondary air chamber;

a filtering air inlet is formed in one end of the primary air inlet chamber, which is opposite to the secondary air inlet chamber;

and an air filter air outlet is formed in one end of the clean air chamber opposite to the secondary air inlet chamber.

6. The dry air cleaner according to claim 1,

the second grade filter core sets up keep away from in the second grade air inlet chamber one end of first grade air inlet chamber, and with first-class filter core mutually perpendicular.

7. The dry air cleaner according to claim 2,

the air inlet end of the air cylinder is connected with the air outlet end of the high-pressure air inlet pipe;

the air outlet end of the high-pressure air inlet pipe is provided with a one-way valve;

and the air outlet end of the air cylinder is connected with the connecting pipe through a high-pressure air outlet pipe.

8. The dry air cleaner according to claim 1,

the primary air inlet chamber is arranged at the bottom of the shell;

a dust collecting funnel is arranged at the bottom of the primary progressive air chamber;

the bottom of the dust collecting funnel is provided with a dust exhaust valve.

9. The dry air cleaner according to claim 1,

and a water drain valve is arranged at the bottom of the air storage cylinder.