阅读说明：本技术 一种可高效回收微小磨粒的磨料喷射机 (Abrasive material injection machine capable of efficiently recycling micro abrasive particles ) 是由 吴彦君 于 2019-11-28 设计创作，主要内容包括：本发明公开的一种可高效回收微小磨粒的磨料喷射机,包括机体,所述机体下端面设有开口向下的喷射腔和反弹腔,所述喷射腔和反弹腔与地面的倾角对称相等且下端相互连通,所述机体内设有喷射装置,所述机体内左侧设有清洁装置,所述机体内设有行走装置,所述行走装置包括左右对称的设于所述机体下端面且开口向下的地轮腔,本发明可在切换工作和非工作状态时自动调整机体与地面的距离,以便在非工作状态时不会影响喷射机的移动,且本发明可在高效回收微小磨粒的同时将磨粒中混杂的碎屑灰尘等吸出,保证磨粒的高质量纯净度,并在工作结束时将磨粒清洗干净,以便下次使用时不会污损其他工件表面。(The invention discloses an abrasive injection machine capable of efficiently recovering micro abrasive particles, which comprises a machine body, wherein an injection cavity and a rebound cavity with downward openings are arranged on the lower end surface of the machine body, the inclination angles of the injection cavity and the rebound cavity are symmetrically equal to the inclination angle of the ground, the lower ends of the injection cavity and the rebound cavity are communicated with each other, an injection device is arranged in the machine body, the cleaning device is arranged on the left side in the machine body, the walking device is arranged in the machine body and comprises ground wheel cavities which are arranged on the lower end surface of the machine body in a bilateral symmetry mode and are provided with downward openings, the invention can automatically adjust the distance between the machine body and the ground when the working state and the non-working state are switched, so as not to influence the movement of the spraying machine in a non-working state, and the invention can efficiently recover the tiny abrasive particles and simultaneously suck out the debris, dust and the like mixed in the abrasive particles, ensure the high-quality purity of the abrasive particles, and the abrasive particles are cleaned at the end of the work so as not to stain the surfaces of other workpieces when the abrasive particles are used next time.)

1. The utility model provides a can high-efficient abrasive material jet plane of retrieving tiny grit which characterized in that: the machine comprises a machine body, wherein a spraying cavity and a rebounding cavity with downward openings are arranged on the lower end face of the machine body, the spraying cavity and the rebounding cavity are symmetrically equal to the inclination angle of the ground, the lower ends of the spraying cavity and the rebounding cavity are communicated with each other, a spraying device is arranged in the machine body and comprises a first motor fixedly arranged in the upper wall of the spraying cavity, the lower end of the first motor is in power connection with a first rotating shaft, the lower end of the first rotating shaft extends into the spraying cavity and is fixedly provided with a high-pressure fan, the high-pressure fan rotates to spray abrasive particles to the surface to be processed at a high speed, the abrasive particles collide with the surface to be processed and rebound into the rebounding cavity, a cleaning device is arranged on the left side in the machine body and comprises a recovery cavity communicated with the upper end of the right wall of the rebounding cavity, a filter screen is fixedly arranged on the side wall of, the dust collection device is characterized in that a dust collection pump is fixedly arranged in the left wall of the upper end of the dust collection cavity, the left end of the dust collection pump extends to the outside, dust filter cotton is fixedly arranged between the front wall and the rear wall of the dust collection cavity and on the right side of the dust collection pump, air in the dust collection cavity is rapidly discharged by the dust collection pump, and then impurities such as debris and dust mixed in abrasive particles in the recovery cavity are sucked into the dust collection cavity, a walking device is arranged in the machine body and comprises a ground wheel cavity which is arranged in a bilateral symmetry mode, the lower end face of the machine body is downward in opening, the upper wall of the ground wheel cavity is communicated with a sliding rod cavity, a sliding rod is arranged in the sliding rod cavity in a vertically sliding mode, the lower end of the sliding rod extends to the ground wheel cavity and is fixedly provided with a ground.

2. The abrasive blasting machine for recovering fine abrasive grains with high efficiency according to claim 1, wherein: injection apparatus includes bilateral symmetry and intercommunication and locates spray the chamber with the first baffle chamber of bounce-back chamber lower extreme lateral wall, the fixed second motor that is equipped with of one side inner wall that first baffle chamber kept away from mutually, second motor one end power in opposite directions is connected with the screw rod, but first baffle intracavity horizontal slip be equipped with first baffle, the opposite side end face of first baffle is equipped with the screw hole that opening direction is opposite, first baffle passes through screw hole threaded connection is in the homonymy the screw rod, when first baffle slided in opposite directions, first baffle one end in opposite directions can extend spray the chamber with bounce-back intracavity and offset, will spray the chamber with the opening of bounce-back chamber lower extreme seals, the organism under the terminal surface fixed be equipped with communicate in spray the chamber with the open-ended in bounce-back chamber blocks the curtain.

3. The abrasive blasting machine for recovering fine abrasive grains with high efficiency according to claim 1, wherein: retrieve the chamber lower wall with the intercommunication is equipped with the storage chamber between the left wall in injection chamber, storage chamber upper wall right-hand member intercommunication is equipped with the second baffle chamber, gliding second baffle intracavity is equipped with the second baffle from top to bottom, the second baffle lower extreme extends can seal after the storage intracavity the storage chamber, second baffle upper end with the first spring of fixedly connected with between the second baffle intracavity wall, second baffle upper end and right side fixedly connected with passes the right side between the first baffle the first stay wire of first baffle chamber upper wall left end.

4. The abrasive blasting machine for recovering fine abrasive grains with high efficiency according to claim 1, wherein: cleaning device is including locating water storage chamber in the organism, the fixed water pump that is equipped with of water storage chamber lower wall, storage chamber upper wall internal fixation is equipped with the shower nozzle, the water pump with the intercommunication is equipped with communicating pipe between the shower nozzle, storage chamber lower wall right side intercommunication is equipped with the backward outlet of opening, fixed up end that is equipped with in outlet lateral wall upper end with storage chamber lower wall is in the water strainer in the coplanar.

5. The abrasive blasting machine for recovering fine abrasive grains with high efficiency according to claim 1, wherein: running gear is including locating the tooth's socket of slide bar left end face, the one side inner wall intercommunication that the slide bar chamber is relative is equipped with the gear chamber, rotatable second pivot that is equipped with between the wall around the gear chamber, fixed being equipped with in the second pivot mesh in the gear of tooth's socket, in the second pivot and in the fixed take-up pulley that is equipped with in rear side of gear, take-up pulley rear end face with fixed link has torsion spring between the wall behind the gear chamber.

6. The abrasive blasting machine for recovering fine abrasive grains with high efficiency according to claim 1, wherein: a switching control cavity is arranged in the upper wall of the injection cavity, two annular blocks are arranged on the first rotating shaft in the switching control cavity, the upper annular block is fixedly connected with the first rotating shaft, the lower annular block is connected with the first rotating shaft in a vertically sliding manner, a key groove with a right opening is arranged on the right end surface of the first rotating shaft, a key is arranged in the key groove and can slide up and down, the right end of the key is fixedly connected with the annular block at the lower side, the annular array of the annular block is provided with six first connecting rod grooves which are communicated up and down, a connecting rod is rotatably arranged between the front wall and the rear wall of the first connecting rod groove, a supporting block is arranged in the switching control cavity and between the first connecting rod grooves on the upper side and the lower side, and one end of the connecting rod at the upper side and the lower side is rotatably connected between the front wall and the rear wall of the second connecting rod groove.

7. The abrasive blasting machine for recovering fine abrasive grains with high efficiency according to claim 6, wherein: the end face, far away from the first rotating shaft, of one side of the abutting block is provided with a roller groove, the opening direction of the roller groove is far away from the first rotating shaft, a roller with one end extending to the outside is rotatably arranged between the upper wall and the lower wall of the roller groove, the left wall of the switching control cavity is communicated with a abutting rod cavity, an abutting rod capable of extending into the switching control cavity is slidably arranged in the abutting rod cavity, a second spring is fixedly connected between the left end of the abutting rod and the inner wall of the abutting rod cavity, and a second pull wire penetrating through the right end of the lower wall of the abutting rod cavity is fixedly connected between the abutting rod and the winding wheel.

Technical Field

The invention relates to the technical field of abrasive injection machines, in particular to an abrasive injection machine capable of efficiently recovering micro abrasive particles.

Background

The jet machine uses compressed air as power, and jets the grinding material to the surface of the processed steel material at a high linear speed to generate striking and grinding effects, so as to remove oxide skin and rust on the surface of the steel material and generate a certain roughness. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows:

the current jetting machine for the micro-abrasive particles has the problems of large abrasive particle loss and low abrasive particle recovery efficiency in the jetting treatment process, and impurities such as debris and dust are mixed in the abrasive particles.

In order to solve the problems, the embodiment designs an abrasive jet machine capable of efficiently recovering tiny abrasive particles, the abrasive jet machine capable of efficiently recovering tiny abrasive particles comprises a machine body, the lower end face of the machine body is provided with a jet cavity and a rebound cavity, the jet cavity and the rebound cavity are provided with downward openings, the inclination angles of the jet cavity and the rebound cavity are symmetrically equal to the inclination angle of the ground, the lower ends of the jet cavity and the rebound cavity are communicated with each other, a jet device is arranged in the machine body and comprises a first motor fixedly arranged in the upper wall of the jet cavity, the lower end of the first motor is in power connection with a first rotating shaft, the lower end of the first rotating shaft extends into the jet cavity and is fixedly provided with a high-pressure fan, the high-pressure fan rotates to jet abrasive particles to a surface to be processed at a high speed, the abrasive particles collide with the surface to be processed and rebound to enter the rebound cavity, the left side in the machine body is, a filter screen is fixedly arranged on the side wall of the recovery cavity, a dust collecting cavity is arranged in the upper wall of the rebound cavity, a dust collecting channel is communicated between the dust collecting cavity and the recovery cavity, a dust suction pump is fixedly arranged in the left wall of the upper end of the dust collecting cavity, the left end of the dust suction pump extends to the outside, dust filter cotton is fixedly arranged between the front wall and the rear wall of the dust collecting cavity and on the right side of the dust suction pump, the dust suction pump quickly discharges air in the dust collecting cavity, impurities such as debris and dust mixed in abrasive particles in the recovery cavity are sucked into the dust collecting cavity, a walking device is arranged in the machine body, the walking device comprises ground wheel cavities which are symmetrically arranged on the lower end face of the machine body and have downward openings, a slide rod cavity is communicated with the upper wall of the ground wheel cavity, a slide rod is arranged in the slide rod cavity in a manner of sliding up and down, the lower end of, the front end and the rear end of the land wheel shaft are symmetrically and rotatably provided with land wheels. Preferably, the injection apparatus includes bilateral symmetry and communicates and locates the injection chamber with the first baffle chamber of bounce-back chamber lower extreme lateral wall, the fixed second motor that is equipped with of one side inner wall that first baffle chamber kept away from mutually, second motor one end power in opposite directions is connected with the screw rod, but first baffle intracavity horizontal slip be equipped with first baffle, the opposite side end face of first baffle is equipped with the screw hole that opening direction is opposite, first baffle passes through screw hole threaded connection is in the homonymy the screw rod, when first baffle slides in opposite directions, first baffle one end in opposite directions can extend the injection chamber with bounce-back intracavity and counterbalance, will the injection chamber with the opening of bounce-back chamber lower extreme seals, the organism under the terminal surface fixed be equipped with communicate in the injection chamber with the open-ended that bounce-back chamber blocks the curtain.

Preferably, retrieve the chamber lower wall with the intercommunication is equipped with the storage chamber between the left wall in injection chamber, storage chamber upper wall right-hand member intercommunication is equipped with the second baffle chamber, the gliding second baffle that is equipped with from top to bottom in the second baffle chamber, the second baffle lower extreme extends can seal after the storage chamber, second baffle upper end with the first spring of fixedly connected with between the second baffle intracavity wall, second baffle upper end and right side fixedly connected with passes the right side between the first baffle the first acting as go-between of first baffle chamber upper wall left end.

Preferably, the cleaning device comprises a water storage cavity arranged in the machine body, a water pump is fixedly arranged on the lower wall of the water storage cavity, a spray head is fixedly arranged on the upper wall of the storage cavity, a communicating pipe is communicated between the water pump and the spray head, a water outlet with a backward opening is communicated with the right side of the lower wall of the storage cavity, and an upper end surface of the upper end of the side wall of the water outlet is fixedly provided with a water strainer with the lower wall of the storage cavity in the same plane.

Preferably, the running gear is including locating the tooth's socket of slide bar left end face, the one side inner wall intercommunication that the slide bar chamber is relative is equipped with the gear chamber, rotatable second pivot that is equipped with between the wall around the gear chamber, fixed being equipped with in the second pivot mesh in the gear of tooth's socket, in the second pivot and in the fixed reel that is equipped with in rear side of gear, reel rear end face with fixedly connected has torsion spring between the wall behind the gear chamber.

Preferably, a switching control cavity is arranged in the upper wall of the injection cavity, two annular blocks are arranged on the first rotating shaft in the switching control cavity, the upper annular block is fixedly connected to the first rotating shaft, the lower annular block is connected to the first rotating shaft in a vertically sliding manner, a key groove with a right opening is arranged on the right end surface of the first rotating shaft, a key is arranged in the key groove and can slide up and down, the right end of the key is fixedly connected with the annular block at the lower side, the annular array of the annular block is provided with six first connecting rod grooves which are communicated up and down, a connecting rod is rotatably arranged between the front wall and the rear wall of the first connecting rod groove, a supporting block is arranged in the switching control cavity and between the first connecting rod grooves on the upper side and the lower side, and one end of the connecting rod at the upper side and the lower side is rotatably connected between the front wall and the rear wall of the second connecting rod groove.

Preferably, one side end face, away from the first rotating shaft, of the abutting block is provided with a roller groove, the opening direction of the roller groove is away from the first rotating shaft, a roller, the upper wall and the lower wall of the roller groove are rotatably provided with a roller, one end of the roller extends to the outside, the switching control cavity left wall is communicated with a abutting rod cavity, an abutting rod capable of extending into the switching control cavity is slidably arranged in the abutting rod cavity, a second spring is fixedly connected between the abutting rod left end and the inner wall of the abutting rod cavity, and a second pull wire penetrating through the lower wall and the right end of the abutting rod cavity is fixedly connected between the abutting rod and the winding wheel.

The invention has the beneficial effects that: the invention can automatically adjust the distance between the machine body and the ground when the working state and the non-working state are switched, so that the movement of the spraying machine is not influenced when the spraying machine is in the non-working state, and the invention can efficiently recover tiny abrasive particles and simultaneously suck out the debris, dust and the like mixed in the abrasive particles, thereby ensuring the high-quality purity of the abrasive particles, and cleaning the abrasive particles when the working is finished, so that the surfaces of other workpieces cannot be stained when the spraying machine is used next time.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic view of an overall structure of an abrasive jet machine capable of efficiently recovering fine abrasive particles according to the present invention;

FIG. 2 is a sectional view taken in the direction "A-A" of FIG. 1;

FIG. 3 is an enlarged schematic view of "B" of FIG. 1;

FIG. 4 is a cross-sectional view taken in the direction "C-C" of FIG. 3;

fig. 5 is a cross-sectional view taken in the direction "D-D" of fig. 3.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an abrasive jet machine capable of efficiently recovering micro abrasive particles, which is mainly applied to efficient surface machining and surface cleaning operation, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to an abrasive material injection machine capable of efficiently recovering tiny abrasive particles, which comprises a machine body 11, wherein the lower end surface of the machine body 11 is provided with an injection cavity 12 and a rebound cavity 13 with downward openings, the inclination angles of the injection cavity 12 and the rebound cavity 13 are symmetrically equal to each other, the lower ends of the injection cavity 12 and the rebound cavity 13 are mutually communicated, an injection device 101 is arranged in the machine body 11, the injection device 101 comprises a first motor 16 fixedly arranged in the upper wall of the injection cavity 12, the lower end of the first motor 16 is in power connection with a first rotating shaft 17, the lower end of the first rotating shaft 17 extends into the injection cavity 12 and is fixedly provided with a high-pressure fan 18, the high-pressure fan 18 rotates to inject the abrasive particles to a surface to be processed at a high speed, the abrasive particles collide with the surface to be processed and rebound into the rebound cavity 13, the left side in the machine body 11 is provided with a cleaning device 102, the cleaning device 102 comprises, a filter screen 29 is fixedly arranged on the side wall of the recovery cavity 15, a dust collecting cavity 30 is arranged in the upper wall of the bounce cavity 13, a dust collecting channel 31 is communicated between the dust collecting cavity 30 and the recovery cavity 15, a dust suction pump 32 is fixedly arranged in the left wall of the upper end of the dust collecting cavity 30, the left end of the dust suction pump 32 extends to the outside, dust filter cotton 33 is fixedly arranged between the front wall and the rear wall of the dust collecting cavity 30 and on the right side of the dust suction pump 32, the dust suction pump 32 quickly discharges air in the dust collecting cavity 30, and then the air is sucked into the dust collecting cavity 30 through impurities such as debris and dust mixed in the abrasive particles of the recovery cavity 15, a walking device 103 is arranged in the machine body 11, the walking device 103 comprises a ground wheel cavity 40 which is arranged on the lower end surface of the machine body 11 in a bilateral symmetry manner and has a downward opening, a slide rod cavity 41 is communicated with the upper wall of the ground wheel cavity 40, and a, the lower end of the slide rod 42 extends into the ground wheel cavity 40 and is fixedly provided with a ground wheel shaft 43, and the front end and the rear end of the ground wheel shaft 43 are symmetrically and rotatably provided with ground wheels 44.

Advantageously, as will be described in detail below, the injection device 101 includes a first baffle cavity 19 that is bilaterally symmetric and is communicated with the side walls of the lower ends of the injection cavity 12 and the bounce cavity 13, a second motor 20 is fixedly disposed on the inner wall of the side of the first baffle cavity 19 away from the first baffle cavity, a screw 21 is dynamically connected to one end of the second motor 20 that faces the first baffle cavity, a first baffle 22 is slidably disposed in the first baffle cavity 19 from left to right, a threaded hole 23 with an opposite opening direction is disposed on the end surface of the side opposite to the first baffle 22, the first baffle 22 is threadedly connected to the screw 21 on the same side through the threaded hole 23, when the first baffle 22 slides towards each other, the end of the first baffle 22 that faces the first baffle 22 can extend into and abut against the injection cavity 12 and the bounce cavity 13 to close the openings at the lower ends of the injection cavity 12 and the bounce cavity 13, a blocking curtain 24 communicated with the openings of the spraying cavity 12 and the bounce cavity 13 is fixedly arranged on the lower end surface of the machine body 11.

Beneficially, a storage chamber 14 is communicated between the lower wall of the recovery chamber 15 and the left wall of the injection chamber 12, a second baffle chamber 25 is communicated with the right end of the upper wall of the storage chamber 14, a second baffle 26 is slidably arranged in the second baffle chamber 25 up and down, the lower end of the second baffle 26 extends into the storage chamber 14 and then can be closed, a first spring 27 is fixedly connected between the upper end of the second baffle 26 and the inner wall of the second baffle chamber 25, and a first pull wire 28 which penetrates through the left end of the upper wall of the first baffle chamber 19 on the right side is fixedly connected between the upper end of the second baffle 26 and the first baffle 22 on the right side.

Advantageously, as will be described in detail below, the cleaning device 102 includes a water storage chamber 34 disposed in the machine body 11, a water pump 35 is fixedly disposed on a lower wall of the water storage chamber 34, a spray head 36 is fixedly disposed in an upper wall of the storage chamber 14, a communication pipe 37 is disposed between the water pump 35 and the spray head 36 in a communication manner, a water discharge port 38 with a backward opening is disposed on a right side of the lower wall of the storage chamber 14 in a communication manner, and a water strainer 39 with an upper end surface in the same plane as the lower wall of the storage chamber 14 is fixedly disposed on an upper end of a side wall of the water discharge.

Beneficially, as the following detailed description is provided for the traveling device 103, the traveling device 103 includes a tooth groove 45 disposed on the left end surface of the sliding rod 42, a gear cavity 46 is disposed in communication with an inner wall of the opposite side of the sliding rod cavity 41, a second rotating shaft 47 is rotatably disposed between the front wall and the rear wall of the gear cavity 46, a gear 48 engaged with the tooth groove 45 is fixedly disposed on the second rotating shaft 47, a winding wheel 62 is fixedly disposed on the second rotating shaft 47 and on the rear side of the gear 48, and a torsion spring 64 is fixedly linked between the rear end surface of the winding wheel 62 and the rear wall of the gear cavity 46.

Beneficially, a switching control cavity 49 is arranged in the upper wall of the injection cavity 12, two annular blocks 50 are arranged on the first rotating shaft 17 in the switching control cavity 49, the annular block 50 on the upper side is fixedly connected to the first rotating shaft 17, the annular block 50 on the lower side is connected to the first rotating shaft 17 in a vertically sliding manner, a key groove 57 with a rightward opening is arranged on the right end face of the first rotating shaft 17, a key 58 is arranged in the key groove 57 in a vertically sliding manner, the right end of the key 58 is fixedly connected to the annular block 50 on the lower side, the annular array of the annular blocks 50 is provided with six first link grooves 51 which are vertically through, a link 52 is rotatably arranged between the front wall and the rear wall of the first link grooves 51, a butting block 53 is arranged in the switching control cavity 49 and between the first link grooves 51 on the upper side and the lower side, the butting block 53 is provided with a second link groove 54 which is vertically through and has an opening facing the first rotating shaft 17 and is close to one side, one end of the link 52 at both upper and lower sides is rotatably connected between the front and rear walls of the second link groove 54.

Beneficially, a roller groove 55 with an opening direction away from the first rotating shaft 17 is disposed on an end surface of the abutting block 53 away from the first rotating shaft 17, a roller 56 with one end extending to the outside is rotatably disposed between an upper wall and a lower wall of the roller groove 55, a abutting rod cavity 59 is disposed in communication with a left wall of the switching control cavity 49, an abutting rod 60 capable of extending into the switching control cavity 49 is slidably disposed in the abutting rod cavity 59, a second spring 61 is fixedly connected between a left end of the abutting rod 60 and an inner wall of the abutting rod cavity 59, and a second pull wire 63 passing through a right end of a lower wall of the abutting rod cavity 59 is fixedly connected between the abutting rod 60 and the winding wheel 62.

The following will describe in detail the operation steps of an abrasive blasting machine capable of recovering fine abrasive particles with high efficiency with reference to fig. 1 to 5:

initially, the first shutters 22 on the left and right sides abut and close the lower end openings of the ejection chamber 12 and the rebound chamber 13, the second shutter 26 is in the lower limit position and closes the right end of the storage chamber 14, the slide rod 42 is in the lower limit position, the lower annular block 50 is in the lower limit position, the abutment rod 60 is in the right limit position, and the right end extends into the switching control chamber 49.

When the curtain is ready to enter a working state, the first motor 16 is started to drive the first rotating shaft 17 to rotate, the first rotating shaft 17 drives the high-pressure fan 18 to rotate to spray air flow into the spraying cavity 12, the first rotating shaft 17 drives the annular block 50 to rotate at a high speed while rotating, under the action of centrifugal force, the abutting block 53 moves towards the direction away from the first rotating shaft 17 and drives the annular block 50 on the lower side to slide upwards through the first connecting rod groove 51, when the abutting block 53 moves, the roller 56 abuts against the abutting rod 60 and pushes the abutting rod 60 to slide towards the abutting rod cavity 59, then the abutting rod 60 pulls the second pull wire 63, the second pull wire 63 drives the winding wheel 62 to rotate, and the winding wheel 62 drives the second rotating shaft 47 and the gear 48 to rotate, and drives the sliding rod 42 to slide upwards through gear meshing, so that the lower end of the blocking curtain 24 is.

When the device works, the second motor 20 is started to drive the screw rod 21 to rotate, so that the first baffle 22 slides towards the opposite direction and is collected in the first baffle cavity 19, the first pull wire 28 is pulled when the first baffle 22 on the right side slides, then the first pull wire 28 pulls the second baffle 26 upwards to the second baffle cavity 25, so that the storage cavity 14 is communicated with the injection cavity 12, the abrasive particles in the storage cavity 14 roll down to enter the injection cavity 12 and are driven by the air flow to be injected to the surface to be processed, the abrasive particles collide with the surface to be processed and rebound to enter the rebound cavity 13, when passing through the recovery chamber 15, the suction pump 32 is activated to rapidly discharge the air in the dust collection chamber 30, furthermore, impurities such as debris and dust mixed in the abrasive particles passing through the recovery cavity 15 are sucked into the dust collection cavity 30, the abrasive particles are heavier and cannot be sucked in, and the abrasive particles fall into the storage cavity 14 after being filtered by the filter screen 29 to continue the circulating injection process.

When the work is finished, the second motor 20 rotates reversely to drive the first baffle 22 to close the openings at the lower ends of the injection cavity 12 and the rebound cavity 13 again, the second baffle 26 slides downwards to close the right end of the storage cavity 14 again, the abrasive particles in the injection cavity 12 collide with the upper end face of the first baffle 22 and enter the storage cavity 14 again through the rebound cavity 13 and the recovery cavity 15 for storage, after no abrasive particles exist in the injection cavity 12 and the rebound cavity 13, the first motor 16 stops running, the annular block 50 on the lower side returns to the initial state, the support rod 60 returns to the initial state under the action of the second spring 61, the second pull wire 63 is loosened in the rebounding process, then the winding wheel 62 rotates reversely to tighten the second pull wire 63 under the action of the torsion spring 64, the winding wheel 62 rotates reversely to drive the second rotating shaft 47 to rotate reversely, the sliding rod 42 slides downwards to return to the initial state so as to move the spraying machine, the water pump 35 is started to spray the water in the water storage cavity 34 to the abrasive particles in the storage cavity 14 through the communication pipe 37 and the spray head 36 The dust and the like adhering to the surface of the abrasive grains are cleaned, and the water is discharged to the outside through the water discharge port 38.

The invention has the beneficial effects that: the invention can automatically adjust the distance between the machine body and the ground when the working state and the non-working state are switched, so that the movement of the spraying machine is not influenced when the spraying machine is in the non-working state, and the invention can efficiently recover tiny abrasive particles and simultaneously suck out the debris, dust and the like mixed in the abrasive particles, thereby ensuring the high-quality purity of the abrasive particles, and cleaning the abrasive particles when the working is finished, so that the surfaces of other workpieces cannot be stained when the spraying machine is used next time.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.