Cleaning wind shovel

Abstract

The utility model relates to a cleaning wind shovel and application, belongs to the field of ceramic core and shell cleaning, and solves the problems that the conventional wind shovel cannot play a role of a wind gun and cannot be used for crushing and cleaning simultaneously. A cleaning air shovel comprises a shell, a shovel head, an air cylinder, an air nozzle, a finger pressing gun wrench, an air inlet connector, a three-way ball valve, an air pipeline, a first pipeline and a second pipeline, and the three-way ball valve, the air pipeline, the first pipeline and the second pipeline are located in the shell. The air inlet of the air pipeline is communicated with the air inlet joint, and the air outlet is connected with the air inlet interface of the three-way ball valve; the air inlet end of the first pipeline is connected with a first valve of the three-way ball valve, and the air outlet end is communicated with the air inlet end of the cylinder; the air inlet end of the second pipeline is connected with the second valve of the three-way ball valve, and the air outlet end is communicated with the tuyere; the shovel head is connected with the air outlet end of the cylinder; the finger pressing gun wrench controls a passage between the air pipeline and the three-way ball valve through a third valve in the shell; the cleaning wind shovel can play a role of a blower gun at the same time, and can perform crushing and cleaning operations at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning ceramic cores and shells of alloy castings, in particular to a wind shovel with a cleaning function. Background Art

[0002] Titanium alloys have excellent properties such as low density, high specific strength, good corrosion resistance, small linear expansion coefficient, excellent high and low temperature mechanical properties, and good biocompatibility. They are not only high-quality structural materials, but also new functional materials and important biological implant materials. They have been widely used in aerospace, shipbuilding, chemical industry, metallurgy, automobiles, sports, biomedicine and other fields. The titanium alloy oxide ceramic shell casting design is flexible, and the casting is prepared by using an integral model shell, which significantly improves the freedom of casting design. At the same time, through the combination of model trimming, highly complex titanium alloy castings can be produced. The oxide ceramic shell has low thermal conductivity, good yield, and a smooth inner surface of the cavity, which can solve the quality bottlenecks of flow marks, cold shuts and cracks in graphite titanium alloy castings, and can achieve the production of complex thin-walled castings below 4 mm.

[0003] However, due to the complex structure of some titanium alloy castings and the presence of groove structures, when using air shovels to crush and clean ceramic shells and cores, the powder generated by the ceramic shells and cores accumulates in the groove structures. When the powder accumulates, it is impossible to distinguish between the cleaned and uncleaned areas. Since the existing air shovels cannot also function as air guns, it is necessary to replace the air guns to clean the powder and then continue to use the air shovels to clean the ceramic shells and cores, which greatly increases the difficulty of cleaning the ceramic shells and cores. Moreover, the air shovels and air guns need to be frequently replaced during the cleaning process, which limits the production efficiency of ceramic shell and core casting.

[0004] Therefore, providing a wind shovel that can improve the cleaning efficiency of ceramic shells and cores of alloy castings is an urgent problem to be solved in the cleaning technology of ceramic cores and shells. Utility Model Content

[0005] In view of the above analysis, an embodiment of the utility model aims to provide a cleaning wind shovel to solve the problem that the existing wind shovel cannot simultaneously realize the function of an air gun, and during the cleaning process, the wind shovel and the air gun need to be replaced frequently, which makes it difficult to clean the ceramic shell and core of the alloy casting, thereby limiting the technical problem of limiting the production efficiency of the alloy ceramic shell and core casting.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] The utility model provides a cleaning wind shovel, comprising: a shell, a shovel head, a cylinder, an air nozzle, a pressure finger gun lever, an air inlet joint, a three-way ball valve, an air duct pipeline, a first pipeline and a second pipeline, wherein the three-way ball valve, the air duct pipeline, the first pipeline and the second pipeline are arranged inside the shell; the cylinder, the air nozzle, the pressure finger gun lever and the air inlet joint are all located on the outer shell of the shell; the air inlet of the air duct pipeline is connected with the air inlet joint, and the air outlet is connected to the air inlet interface of the three-way ball valve; the air inlet end of the first pipeline is connected with the first valve of the three-way ball valve, and the air outlet end is connected with the air inlet end of the cylinder; the air inlet end of the second pipeline is connected with the second valve of the three-way ball valve, and the air outlet end is connected with the air nozzle; the shovel head is connected with the air outlet end of the cylinder, and the pressure finger gun lever controls the passage between the air duct pipeline and the three-way ball valve through the third valve.

[0008] Optionally, the air nozzle is located below the cylinder, the air inlet connector is located at the bottom of the shell, and the finger-pressing gun trigger is located on the vertical side of the shell.

[0009] Optionally, the air duct pipeline includes a horizontal part and a vertical part, the first pipeline and the second pipeline are straight pipes, the first pipeline and the second pipeline are parallel to each other, and the vertical part of the air duct pipeline is perpendicular to the first pipeline and the second pipeline.

[0010] Optionally, the air duct pipeline, the first pipeline and the second pipeline are connected to the three-way ball valve by welding.

[0011] Optionally, the three-way ball valve is connected to the air duct pipeline, the first pipeline and the second pipeline in the horizontal direction.

[0012] Optionally, the three-way ball valve is of T-type.

[0013] Optionally, the air duct, the first pipeline and the second pipeline are copper tubes, PU tubes or aluminum tubes.

[0014] Optionally, one end of the air inlet connector away from the air duct is connected to a compressed air source.

[0015] Optionally, the cylinder includes a cylinder piston located on a side of the cylinder close to the shovel head.

[0016] Optionally, an elastic element is included between the cylinder and the shovel head, and a front section of the elastic element is clamped to the shovel head.

[0017] Optionally, the third valve mainly includes a reset spring, a switch connecting rod, a normally closed static contact and a shell, wherein the shell is located inside the shell behind the finger pressure gun trigger, and a pair of normally closed static contacts are symmetrically arranged in the middle of the top and bottom surfaces inside the shell, and the horizontal part of the switch connecting rod is connected to the finger pressure gun trigger. In the non-working state, the vertical part of the switch connecting rod overlaps the normally closed static contact, and the switch connecting rod is reset by the inserted reset spring.

[0018] Optionally, the cylinder mainly includes a cylinder body, a cylinder piston, a cylinder connecting rod, an eccentric wheel, and an air inlet, wherein the eccentric wheel is a waterwheel-type structure with a plurality of spokes evenly distributed along the axial direction, a channel is provided along the central axis of the thick-walled portion of the cylinder body close to the shovel head, and the cylinder piston can reciprocate in the channel, and the end of the cylinder piston away from the shovel head is connected to one end of the cylinder connecting rod by bolts, and the other end of the cylinder connecting rod away from the shovel head is connected to the outer edge of the eccentric wheel located in the cylinder body and close to the shell side by bolts, and the air inlet is connected to the outlet end of the first pipeline.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] (1) The cleaning air shovel provided by the utility model integrates the functions of crushing ceramic shells and cores and cleaning ceramic powder by adding air ducts, three-way ball valves, and air nozzles, thereby realizing the integration of the air shovel and the air gun. Moreover, during the cleaning process, the functions of the air shovel and the air gun can be changed by only controlling the valve of the three-way ball valve, thereby saving time and cost and improving the production efficiency of alloy ceramic shell and core casting.

[0021] (2) The cleaning air shovel provided by the utility model can achieve the effects of crushing and cleaning at the same time when the first valve, the second valve and the third valve of the three-way ball valve are opened at the same time, which effectively solves the problem that the air gun and the air shovel cannot be used at the same time in the prior art, and significantly improves the cleaning efficiency of alloy ceramic shell and core casting.

[0022] (3) The cleaning air shovel provided by the utility model is used in the titanium alloy casting structure. The titanium alloy casting structure has a groove structure. The cleaning air shovel performs cleaning while crushing to avoid too much ceramic powder accumulating in the groove structure and affecting the production of titanium alloy castings.

[0023] (4) The cleaning wind shovel of the utility model adopts a three-way ball valve, which can control the flow and pressure of the gas in a smaller space without increasing the volume of the cleaning wind shovel; and the three-way ball valve has good sealing performance and high pressure resistance, and is very suitable for use in the wind shovel.

[0024] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0026] Figure 1 This is a schematic structural diagram of a cleaning wind shovel according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle A part;

[0028] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the middle component;

[0029] Figure 4 for Figure 2 Another three-dimensional structural schematic diagram of the middle component;

[0030] Figure 5 for Figure 1 Schematic diagram of the internal structure of the middle B part;

[0031] Explanation of symbols:

[0032] 100-cleaning wind shovel, 10-shell, 11-shovel head, 12-cylinder, 13-nozzle, 14-finger pressure gun lever, 15-inlet connector, 16-three-way ball valve, 17-air duct pipeline, 18-first pipeline, 19-second pipeline, a-first valve, b-second valve, c-third valve, 20-cylinder body, 21-cylinder piston; 22-cylinder connecting rod, 23-eccentric wheel, 24-air inlet, 31-reset spring, 32-switch connecting rod, 33-normally closed static contact, 34-shell, Q-airflow, 40-elastic element. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by technicians in the technical field to which the present invention belongs; the terms used in the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0035] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present invention may be combined with other embodiments.

[0036] In the present application, unless otherwise specified, the numerical range "a to b" means including the end values ​​a and b and any numerical value between a and b.

[0037] If there is no special explanation, the "including" mentioned in this application means open or closed. For example, the "including" may mean that other components not listed may also be included or only the listed components may be included.

[0038] See also Figure 1 The embodiment of the present application provides a cleaning wind shovel 100, comprising: a shell 10, a shovel head 11, a cylinder 12, a nozzle 13, a finger-pressing gun lever 14, an air inlet joint 15, a three-way ball valve 16, an air duct pipeline 17, a first pipeline 18, and a second pipeline 19. The three-way ball valve 16, the air duct pipeline 17, the first pipeline 18, and the second pipeline 19 are arranged inside the shell 10. The cylinder 12, the nozzle 13, the finger-pressing gun lever 14, and the air inlet joint 15 are all located on the outer shell of the shell 10. The air duct pipeline 17 includes an air inlet and an air outlet, the air inlet is connected to the air inlet joint 15, and the air outlet is connected to the air inlet interface of the three-way ball valve 16. The air inlet end of the first pipeline 18 is connected to the first valve a of the three-way ball valve 16, and the air outlet end is connected to the air inlet end of the cylinder 12; the air inlet end of the second pipeline 19 is connected to the second valve b of the three-way ball valve 16, and the air outlet end is connected to the air nozzle 13. The shovel head 11 is connected to the gas outlet end of the cylinder 12 .

[0039] In this embodiment, the air nozzle 13 is located below the cylinder 12, the air inlet connector 15 is located at the bottom of the housing 10, and the finger gun trigger 14 is located on the vertical side of the housing 10 and below the air nozzle 13. It can be understood that in some other embodiments, the air nozzle 13 can also be located above the cylinder 12.

[0040] The cylinder 12 preferably includes a cylinder piston, which is located inside the cylinder 12 and close to one side of the shovel head 11. The cylinder piston moves back and forth under the drive of compressed air. In this embodiment, the cylinder 12 mainly includes a cylinder body 20, a cylinder piston 21, a cylinder connecting rod 22, an eccentric wheel 23, and an air inlet 24. The eccentric wheel 23 is a waterwheel-type structure with a plurality of spokes evenly distributed along the axial direction, wherein a channel is provided along the central axis of the thick-walled portion of the cylinder body 20 close to the shovel head 11, and the cylinder piston 21 can reciprocate in the channel. The end of the cylinder piston 21 away from the shovel head 11 is connected to one end of the cylinder connecting rod 22 by bolts, and the other end of the cylinder connecting rod 22 away from the shovel head 11 is connected to the outer edge of the eccentric wheel 23 located inside the cylinder body 20 and close to the shell 10 by bolts; compressed air flows into the air inlet 24 through the air outlet end of the first pipeline 18, and the spokes of the eccentric wheel 23 rotate under the action of air pressure, driving the cylinder connecting rod 22 and the cylinder piston 21 to reciprocate, continuously colliding with the shovel head 11, and then causing the shovel head 11 to collide with objects such as ceramic shells and cores to perform crushing and other destructive operations.

[0041] Preferably, an elastic element 40 is further included between the cylinder 12 and the shovel head 11, so that after the shovel head 11 hits the object, it can rebound to its original position, and then perform reciprocating motion to hit the object in a cycle, so as to achieve the purpose of crushing, breaking, etc. The elastic element is preferably, but not limited to, a coil spring or a torsion bar spring. In this embodiment, the elastic element is a coil spring, which is connected to the cylinder 12 by welding or threaded assembly. Preferably, the shovel head 11 includes a flange on the side close to the cylinder 12, which is used for the front section of the spring to be clamped to the shovel head 11.

[0042] The material and shape of the cylinder 12 and the shovel head 11 can be designed according to actual needs. The cylinder 12 and the shovel head 11 are preferably, but not limited to, fixed and limited by a coil spring.

[0043] The shape of the housing 10 can be designed according to actual needs. The shape of the housing 10 is preferably, but not limited to, a pistol shape. The material of the housing 10 is preferably, but not limited to, engineering plastics and cast iron.

[0044] The air nozzle 13 is used to blow out the compressed air, thereby cleaning the powder generated during the alloy casting process. The air nozzle 13 is preferably a hollow tube. The material of the air nozzle 13 can be selected according to actual needs, as long as it can withstand the pressure of the compressed air. The material of the air nozzle 13 is preferably stainless steel, aluminum, or plastic. The air nozzle 13 is preferably, but not limited to, arranged on the outer wall of the housing 10 by welding or threaded assembly.

[0045] The first valve a and the second valve b of the three-way ball valve 16 can be selectively opened or opened simultaneously by, but not limited to, a handle or a hand wheel switch arranged outside the housing 10 .

[0046] The finger-pressing gun trigger 14 preferably controls the passage between the air duct pipeline 17 and the three-way ball valve 16 through the third valve c. By pressing the finger-pressing gun trigger 14, the third valve c is opened, and the compressed air flows through the air duct pipeline 17 into the three-way ball valve 16. In this embodiment, the third valve c mainly includes a reset spring 31, a switch connecting rod 32, a normally closed static contact 33 and a shell 34, wherein the shell 34 is located inside the housing 10 behind the finger-pressing gun trigger 14, and a pair of normally closed static contacts 33 are symmetrically arranged at the middle position of the top surface and the bottom surface inside the shell 34. The horizontal part of the switch connecting rod 32 is connected to the finger-pressing gun trigger 14. In the non-working state, the vertical part of the switch connecting rod 32 overlaps the normally closed static contact 33, and the switch connecting rod 32 is reset by the inserted reset spring 31; by pressing the finger-pressing gun trigger 14, the switch connecting rod 32 is pushed to move so that the airflow channel is opened, so that the airflow Q enters the three-way ball valve 16 through the air duct pipeline 17.

[0047] The air inlet connector 15 is connected to a compressed air source and is used to deliver high-pressure gas to the air duct 17. The pressure of the high-pressure gas is preferably 6-8 kg / cm 2 If the air pressure is too high, it is easy to damage the pipeline, and if the air pressure is too low, the power will be very low. The material of the air inlet connector 15 can be but not limited to copper, steel, and engineering plastics. The air inlet connector 15 is preferably but not limited to being connected to the air duct pipeline 17 by screw connection.

[0048] The air duct line 17, the first line 18 and the second line 19 can be connected to the three-way ball valve 16 by welding, but not limited to, and then fixed by snaps or the like. The materials of the air duct line 17, the first line 18 and the second line 19 are preferably copper tubes, PU tubes or aluminum tubes. In this embodiment, the air duct line 17, the first line 18 and the second line 19 are all copper tubes.

[0049] The air duct 17 is mainly composed of a horizontal part and a vertical part. The first pipe 18 and the second pipe 19 are straight pipes. The first pipe 18 and the second pipe 19 are parallel to each other. The vertical part of the air duct 17 is perpendicular to the first pipe 18 and the second pipe 19. In this embodiment, the shape of the air duct 17 is It can be understood that the shapes and arrangements of the air duct 17, the first pipeline 18 and the second pipeline 19 are not limited to those in the present embodiment and can be selected according to actual conditions.

[0050] The three-way ball valve 16 can control the flow and pressure of the gas in a small space without increasing the volume of the cleaning wind shovel 100; and the three-way ball valve 16 has good sealing performance and high pressure resistance, and is very suitable for use in the wind shovel. Preferably, the three-way ball valve 16 is T-shaped. The three-way ball valve 16 is preferably, but not limited to, connected to the air duct pipeline 17, the first pipeline 18, and the second pipeline 19 in the horizontal direction.

[0051] The working principle of the cleaning air shovel 100 is as follows: when the first valve a of the three-way ball valve 16 is opened and the second valve b is closed, by pressing the finger gun lever 14, the third valve c is opened, the air duct pipeline 17 is connected with the first pipeline 18, and the cylinder piston is driven by compressed air to drive the shovel head 11 to move, and the shovel head 11 can perform operations such as crushing. The first valve a of the three-way ball valve 16 is closed, the second valve b is opened, by pressing the finger gun lever 14, the third valve c is opened, the air duct pipeline 17 is connected with the second pipeline 19, and the compressed air is blown out by the air nozzle 13. At this time, the air shovel 100 can be used as an air gun to clean the generated powder. When the first valve a and the second valve b of the three-way ball valve 16 are opened at the same time, by pressing the finger gun lever 14, the third valve c is opened, and the air duct pipeline 17 is connected with the first pipeline 18 and the second pipeline 19. At this time, the shovel head 11 and the air nozzle 13 can work at the same time, and the wind shovel 100 plays the role of crushing and cleaning at the same time. At this time, the cleaning wind shovel 100 plays the role of both a wind shovel and a wind gun.

[0052] The utility model also provides the use of the cleaning air shovel 100 as described above in alloy castings, and the air shovel 100 is used to crush and / or clean the ceramic shell and core. In this embodiment, the air shovel 100 is used in titanium alloy castings, and is also used to crush and clean the ceramic shell and core.

[0053] Of course, the cleaning air shovel 100 of the present invention is not limited to the application in alloy castings. The cleaning air shovel 100 of the present invention has the functions of an air shovel and an air gun, and can be applied to any field that requires an air shovel and / or an air gun.

[0054] The technical solution of the present utility model is further described in detail below in conjunction with specific embodiments.

[0055] Embodiment 1:

[0056] In this embodiment, a cleaning wind shovel 100 is used to clean the ceramic shell of the titanium alloy casting. The three-way ball valve 16 of this embodiment is T-shaped, and the shape of the air duct 17 is The first pipeline 18 and the second pipeline 19 are straight pipes. The air duct pipeline 17, the first pipeline 18 and the second pipeline 19 are all made of copper tubes, which are connected to the three-way ball valve 16 in the horizontal direction by welding and fixed by buckles. The cylinder 12 mainly includes a cylinder body 20, a cylinder piston 21, a cylinder connecting rod 22, an eccentric wheel 23, and an air inlet 24. A spring is included between the cylinder 12 and the shovel head 11. The spring is connected to the cylinder 12 by a threaded assembly method. The shovel head 11 includes a flange on the side close to the cylinder 12, which is used to clamp the front section of the spring to the shovel head 11. The finger-pressing gun lever 14 preferably controls the passage between the air duct pipeline 17 and the three-way ball valve 16 through the third valve c. The third valve c mainly includes a reset spring 31, a switch connecting rod 32, a normally closed static contact 33 and a shell 34. By pressing the finger-pressing gun lever 14, the switch connecting rod 32 is pushed to move so that the air flow channel is opened, so that the compressed air flows through the air duct pipeline 17 and enters the three-way ball valve 16. The first valve a and the second valve b of the three-way ball valve 16 are preferably, but not limited to, controlled by a handle switch disposed outside the housing 10 to be opened one by one and opened simultaneously. The housing 10, the shovel head 11, the cylinder 12, the air nozzle 13, and the air inlet connector 15 are made of copper. The air nozzle 13 is connected to the housing 10 by welding, the air inlet connector 15 is connected to the housing 10 by screwing, and the finger gun lever 14 is connected to the housing 10 by assembly.

[0057] When the ceramic shell of the titanium alloy casting is crushed and cleaned, the first valve a of the three-way ball valve 16 is first opened, the second valve b is closed, and the third valve c is opened by pressing the finger gun lever 14, the air duct pipeline 17 is connected to the first pipeline 18, and the cylinder piston is driven by compressed air to drive the shovel head 11 to reciprocate to crush the ceramic shell; when powder is accumulated in the groove of the titanium alloy casting, the second valve b of the three-way ball valve 16 is opened, the first valve a is closed, the finger gun lever 14 is pressed, the third valve c is opened, the air duct pipeline 17 is connected to the second pipeline 19, and the compressed air is blown out from the air nozzle 13 to clean the accumulated ceramic powder; when the ceramic powder is seriously accumulated, the first valve a and the second valve b of the three-way ball valve can be opened at the same time, the finger gun lever 14 is pressed, the third valve c is opened, the air duct pipeline 17 is connected to the first pipeline 18 and the second pipeline 19, and the ceramic shell on the surface of the casting is crushed while the ceramic powder generated is cleaned with compressed air.

[0058] Comparative Example 1

[0059] The ceramic shell of the titanium alloy casting that is the same as that in Example 1 was cleaned using an existing IS-150 model wind shovel and an IS-606 model wind gun sold by Instar Industrial Products.

[0060] The cleaning air shovel provided in the embodiment of the utility model is based on the existing air shovel by adding air ducts, three-way ball valves, and air nozzles, so that the cleaning air shovel can realize the integrated functions of crushing ceramic shells and cores and cleaning ceramic powder. The cleaning air shovel can play the role of both air shovel and air gun at the same time, effectively solving the problem that the air gun and air shovel cannot be used at the same time in the prior art, and significantly improving the cleaning efficiency of alloy ceramic shell and core casting. When cleaning the same titanium alloy casting ceramic shell, the efficiency of Example 1 and Comparative Example 1 can be improved by more than 20%; and in the cleaning process, the functions of the air shovel and air gun can be changed by controlling the valve of the three-way ball valve, saving time and cost, and improving the production efficiency of alloy ceramic shell and core casting. When the cleaning air shovel provided by the utility model is used in the titanium alloy casting structure, there are grooves in the titanium alloy casting structure. The cleaning air shovel cleans while crushing, avoiding too much ceramic powder accumulating in the groove to affect the production of titanium alloy castings.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A cleaning wind shovel, characterized in that: include: A shell body, a shovel head, a cylinder, an air nozzle, a finger-pressing gun lever, an air inlet joint, a three-way ball valve, an air duct pipeline, a first pipeline and a second pipeline, wherein the three-way ball valve, the air duct pipeline, the first pipeline and the second pipeline are arranged inside the shell body; the cylinder, the air nozzle, the finger-pressing gun lever and the air inlet joint are all located on the outer shell of the shell; the air inlet of the air duct pipeline is connected with the air inlet joint, and the air outlet is connected to the air inlet interface of the three-way ball valve; the air inlet end of the first pipeline is connected with the first valve of the three-way ball valve, and the air outlet end is connected with the air inlet end of the cylinder; the air inlet end of the second pipeline is connected with the second valve of the three-way ball valve, and the air outlet end is connected with the air nozzle; the shovel head is connected with the air outlet end of the cylinder, and the finger-pressing gun lever controls the passage between the air duct pipeline and the three-way ball valve through the third valve.

2. The cleaning wind shovel according to claim 1, characterized in that: The air nozzle is located below the cylinder, the air inlet joint is located at the bottom of the shell, and the finger pressing gun trigger is located on the vertical side of the shell.

3. The cleaning wind shovel according to claim 1 or 2, characterized in that: The air duct pipeline includes a horizontal part and a vertical part, the first pipeline and the second pipeline are straight pipes, the first pipeline and the second pipeline are parallel to each other, and the vertical part of the air duct pipeline is perpendicular to the first pipeline and the second pipeline.

4. The cleaning wind shovel according to claim 3, characterized in that: The three-way ball valve is connected to the air duct pipeline, the first pipeline and the second pipeline in a horizontal direction.

5. The cleaning wind shovel according to claim 1 or 2, characterized in that: The air duct, the first pipeline and the second pipeline are copper tubes, PU tubes or aluminum tubes.

6. The cleaning wind shovel according to claim 1 or 2, characterized in that: One end of the air inlet joint away from the air duct is connected to a compressed air source.

7. The cleaning wind shovel according to claim 1 or 2, characterized in that: The cylinder comprises a cylinder piston which is located at a side of the cylinder close to the shovel head.

8. The cleaning wind shovel according to claim 1 or 2, characterized in that: An elastic element is included between the cylinder and the shovel head, and a front section of the elastic element is clamped to the shovel head.

9. The cleaning wind shovel according to claim 1 or 2, characterized in that: The third valve mainly includes a reset spring, a switch connecting rod, a normally closed static contact and an outer shell, wherein the outer shell is located inside the shell behind the finger pressure gun trigger, and a pair of normally closed static contacts are symmetrically arranged in the middle of the top and bottom surfaces inside the outer shell, and the horizontal part of the switch connecting rod is connected to the finger pressure gun trigger. In the non-working state, the vertical part of the switch connecting rod overlaps the normally closed static contact, and the switch connecting rod is reset by the inserted reset spring.

10. The cleaning wind shovel according to claim 1 or 2, characterized in that: The cylinder mainly includes a cylinder body, a cylinder piston, a cylinder connecting rod, an eccentric wheel, and an air inlet, wherein the eccentric wheel is a waterwheel-type structure with a plurality of spokes evenly distributed along the axial direction, a channel is provided along the central axis of the thick-walled portion of the cylinder body close to the shovel head, and the cylinder piston can reciprocate in the channel, and one end of the cylinder piston away from the shovel head is connected to one end of the cylinder connecting rod by bolts, and the other end of the cylinder connecting rod away from the shovel head is connected to the outer edge of the eccentric wheel located in the cylinder body and close to the shell side by bolts, and the air inlet is connected to the air outlet end of the first pipeline.

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