CN218947384U

CN218947384U - Sand blasting machine

Info

Publication number: CN218947384U
Application number: CN202223509534.6U
Authority: CN
Inventors: 肖陈良
Original assignee: Sanming Nanyi Machinery Equipment Co ltd
Current assignee: Sanming Nanyi Machinery Equipment Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-05-02
Anticipated expiration: 2032-12-28

Abstract

The utility model relates to a sand blasting machine which comprises a sand blasting box, a screening bin communicated with the bottom of the sand blasting box, a waste collection box arranged in the screening bin, a dust removing mechanism arranged on one side of the sand blasting box, a sand blasting gun arranged at the top in the sand blasting box, and a placing table arranged in the sand blasting box, wherein a filter plate is arranged in the screening bin, a vibrating motor is arranged on one side of the bottom of the filter plate, a sand storage box is connected to the top of one side of the screening bin, a sand inlet communicated with the inside of the screening bin is formed in the top of one side, close to the screening bin, of the sand storage box, and a conveying assembly is arranged at the bottom of the sand storage box. In the using process, the sand blasting machine can effectively screen and recycle residues and sand grains generated after sand blasting, and the phenomenon that the residues and the sand grains cannot be screened and recycled again when being mixed together in the conventional sand blasting machine during sand blasting is avoided, so that the quality of sand blasting is ensured, the filtering and recycling effects are improved, and the practicability of the sand blasting machine is improved.

Description

Sand blasting machine

Technical Field

The utility model relates to the technical field of sand blasters, in particular to a sand blaster.

Background

The sand blasting machine utilizes compressed air to convey powdery particle (diameter is 1-4 mm) materials from one place to another place in a pipeline, and in the process of converting kinetic energy into potential energy, sand grains moving at high speed are made to wash the surface of an object, so that the effect of improving the surface quality of the object is achieved.

However, when an existing sand blasting machine is used for blasting and polishing an object, polished sand grains and residues generated by the polished object are mixed with each other, sand grains and residues cannot be screened out from sand-containing residue waste materials, and recycling of the sand grains is not performed, so that a large amount of new sand grains are required to be processed, and processing cost is increased. To this end we propose a sandblasting machine.

Disclosure of Invention

The utility model aims to solve the defects in the prior art and provides a sand blasting machine.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a sand blasting machine, includes the sand blasting case, feeds through at the screening storehouse of sand blasting case bottom, sets up at the inside garbage collection box of screening storehouse, installs the dust removal mechanism in sand blasting case one side, installs the sand blasting rifle at the interior top of sand blasting case and sets up the platform of placing of dress in the sand blasting case inside, the internally mounted in screening storehouse has the filter, vibrating motor is installed to bottom one side of filter, one side top of screening storehouse is connected with the sand storage case, the sand inlet with screening storehouse inside intercommunication is seted up at one side top that the sand storage case is close to the screening storehouse, the bottom of sand storage case is provided with conveying component, conveying component's input and the inside intercommunication of sand storage case, conveying component output runs through the top of sand blasting case and sand blasting rifle intercommunication.

Preferably, a rotating rod is horizontally arranged between the placing table and the filter plate, one end of the rotating rod is rotationally connected with the inner wall of the sandblasting box, the other end of the rotating rod penetrates through the side wall of the sandblasting box through a shaft sleeve, and a hairbrush barrel is sleeved inside the sandblasting box and is arranged on the outer ring of the rotating rod.

Preferably, one end of the rotating rod is rotationally connected with a limit groove, a limit block matched with the limit groove is arranged on one side of the inner wall of the sand blasting box, a through groove is arranged on one side of the sand blasting box and positioned at an adjacent position of the rotating rod, and a plurality of hairbrush strips are connected to the inner wall of the sand blasting box and positioned in the through groove.

Preferably, the driving motor is installed to one side of the sand-spraying box, the output shaft of driving motor is connected with the end transmission of dwang, the fixed block is installed to driving motor's bottom, the spout has been seted up to one side of the sand-spraying box and the lower extreme that is located logical groove, the one end that the fixed block is close to the spout and spout sliding connection, one side outer wall lower extreme fixedly connected with backup pad of the sand-spraying box, the backup pad is close to driving motor's a side wall and installs electric putter, electric putter's output and fixed block one side fixed mounting.

Preferably, the conveying assembly comprises a high-pressure air pump which is arranged below the sand storage box and fixedly arranged on the side wall of the screening bin, the input end of the high-pressure air pump is connected with a conveying pipe, one end, far away from the high-pressure air pump, of the conveying pipe is communicated with the sand blasting gun, and the bottom of the sand storage box is communicated with the inside of the conveying pipe.

Preferably, the dust removing mechanism comprises a dust removing box arranged on the side wall of the sand spraying box, the top of the dust removing box is provided with an air extracting pump, the inside of the dust removing box is provided with a cloth bag filter, one end of the cloth bag filter is communicated with a connecting pipe, one end of the connecting pipe, which is far away from the cloth bag filter, penetrates through the outer wall of one side of the dust removing box and is communicated with the air extracting pump, one end, which is far away from the connecting pipe, of the air extracting pump is communicated with an exhaust pipe, one end, which is far away from the air extracting pipe, penetrates through the sand spraying box and extends to the inside of the sand spraying box, and one end inner cavity, which extends to the inside of the sand spraying box, of the air extracting pipe, is fixedly provided with a circular filter screen.

Preferably, both ends of placing the platform and the both sides inner wall fixed connection of sandbox, the bottom of sandbox just is located the top fixed mounting in screening storehouse and has square filter screen, the bottom of sandbox and the top fixed connection in screening storehouse, waste collection box and the interior bottom sliding connection in screening storehouse, the baffle is installed to one side of vibrating motor and the bottom that is located the filter.

Preferably, one side of the sand blasting box is hinged with a first box door, one side of the dust removing box is hinged with a second box door, the lower end of one side of the screening bin is hinged with a bin door, and supporting legs are fixedly installed at four corners of the bottom of the screening bin.

The sand blasting machine provided by the utility model has the beneficial effects that:

1. sand grains and waste residues after polishing fall on the filter plate, vibration is generated through the vibrating motor, smaller waste residues fall on the waste collection box through the filter plate, sand grains enter the sand storage box through the sand inlet through vibration and fall into the conveying pipe, sand grains are conveyed into the sand blasting gun through the high-pressure air pump to be blasted again, and residues and sand grains after sand blasting are screened, so that sand grains can be guaranteed to be recycled.

2. The rotary rod is driven by the driving motor to rotate, the brush cylinder is driven to rotate together to continuously clean sand grains and waste residues on the filter plate and the placing table, the electric push rod is used for driving the driving motor to move, the bottom of the filter plate and the placing table is cleaned more comprehensively, blocking is prevented from occurring, the cleanliness of the placing table and the filter plate is guaranteed, and the filtering effect is improved.

3. Can produce the dust of a large amount of tiny impurity during the sandblast, take out the inside air that has dust impurity of sandblast case through the aspiration column and transmit to the sack filter in absorption, through the circular filter screen of exhaust column internally mounted, sand grain and the waste residue that can also avoid splashing during the sandblast are by the suction transmission to the aspiration pump in influence the operation, have avoided the dust to diffuse in the sandblast incasement, lead to outside air to receive the pollution.

The foregoing summary is merely an overview of the present application, and is provided to enable one of ordinary skill in the art to make more clear the present application and to be practiced according to the teachings of the present application and to make more readily understood the above-described and other objects, features and advantages of the present application, as well as by reference to the following detailed description and accompanying drawings.

Drawings

The drawings are only for purposes of illustrating the principles, implementations, applications, features, and effects of the present application and are not to be construed as limiting the application.

In the drawings of the specification:

FIG. 1 is a schematic view of a sand blaster according to the present utility model;

FIG. 2 is a schematic side view of a sand blaster according to the present utility model;

FIG. 3 is an internal cutaway view of a blasting machine according to the present utility model;

FIG. 4 is a schematic view showing the internal structure of a sandblasting box of the sandblasting machine according to the present utility model;

FIG. 5 is a schematic view of the high-pressure air pump of the sandblasting machine according to the present utility model;

fig. 6 is a cut-away view of a screening bin of a sandblasting machine according to the present utility model.

Reference numerals referred to in the above drawings are explained as follows:

1. spraying a sand box; 2. a screening bin; 3. a sand storage box; 4. a dust removal box; 5. an air extracting pump; 6. a connecting pipe; 7. a sand blasting gun; 8. a transmission tube; 9. an exhaust tube; 10. a cloth bag filter; 11. a placement table; 12. a limit groove; 13. a limiting block; 14. a brush cylinder; 15. a waste collection box; 16. a filter plate; 17. a baffle; 18. a vibration motor; 19. a driving motor; 20. a brush strip; 21. a rotating lever; 22. a circular filter screen; 23. a square filter screen; 24. a chute; 25. a fixed block; 26. a high pressure air pump; 27. an electric push rod; 28. a support plate; 29. a first door; 30. a second door; 31. support legs; 32. and a bin gate.

Detailed Description

In order to describe the possible application scenarios, technical principles, practical embodiments, and the like of the present application in detail, the following description is made with reference to the specific embodiments and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples and are not intended to limit the scope of protection of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "in various places in the specification are not necessarily all referring to the same embodiment, nor are they particularly limited to independence or relevance from other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the technical features mentioned in the embodiments may be combined in any manner to form a corresponding implementable technical solution.

Unless defined otherwise, technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains; the use of related terms herein is for the description of specific embodiments only and is not intended to limit the present application.

In the description of the present application, the term "and/or" is a representation for describing a logical relationship between objects, which means that there may be three relationships, e.g., a and/or B, representing: there are three cases, a, B, and both a and B. In addition, the character "/" herein generally indicates that the front-to-back associated object is an "or" logical relationship.

In this application, terms such as "first" and "second" are used merely to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual number, order, or sequence of such entities or operations.

Without further limitation, the use of the terms "comprising," "including," "having," or other like terms in this application is intended to cover a non-exclusive inclusion, such that a process, method, or article of manufacture that comprises a list of elements does not include additional elements but may include other elements not expressly listed or inherent to such process, method, or article of manufacture.

As in the understanding of the "examination guideline," the expressions "greater than", "less than", "exceeding", and the like are understood to exclude the present number in this application; the expressions "above", "below", "within" and the like are understood to include this number. Furthermore, in the description of the embodiments of the present application, the meaning of "a plurality of" is two or more (including two), and similarly, the expression "a plurality of" is also to be understood as such, for example, "a plurality of groups", "a plurality of" and the like, unless specifically defined otherwise.

In the description of the embodiments of the present application, spatially relative terms such as "center," "longitudinal," "transverse," "length," "width," "thickness," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counter-clockwise," "axial," "radial," "circumferential," etc., are used herein as terms of orientation or positional relationship based on the specific embodiments or figures, and are merely for convenience of description of the specific embodiments of the present application or ease of understanding of the reader, and do not indicate or imply that the devices or components referred to must have a particular position, a particular orientation, or be configured or operated in a particular orientation, and therefore are not to be construed as limiting of the embodiments of the present application.

Unless specifically stated or limited otherwise, in the description of the embodiments of the present application, the terms "mounted," "connected," "affixed," "disposed," and the like are to be construed broadly. For example, the "connection" may be a fixed connection, a detachable connection, or an integral arrangement; the device can be mechanically connected, electrically connected and communicated; it can be directly connected or indirectly connected through an intermediate medium; which may be a communication between two elements or an interaction between two elements. The specific meanings of the above terms in the embodiments of the present application can be understood by those skilled in the art to which the present application pertains according to the specific circumstances.

Referring to fig. 1 to 6, the sand blaster comprises a sand blasting box 1, a screening bin 2 communicated with the bottom of the sand blasting box 1, a waste collection box 15 arranged in the screening bin 2, a dust removing mechanism arranged on one side of the sand blasting box 1, a sand blasting gun 7 arranged at the inner top of the sand blasting box 1, and a placing table 11 arranged in the sand blasting box 1, wherein a filter plate 16 is arranged in the screening bin 2, a vibrating motor 18 is arranged on one side of the bottom of the filter plate 16, a sand storage box 3 is connected with the top of one side of the screening bin 2, a sand inlet communicated with the inside of the screening bin 2 is formed in the top of one side of the sand storage box 3, a conveying component is arranged at the bottom of the sand storage box 3, the input end of the conveying component is communicated with the inside of the sand storage box 3, and the output end of the conveying component penetrates through the top of the sand blasting box 1 and is communicated with the sand blasting gun 7.

Place the level between platform 11 and the filter 16 and be provided with dwang 21, the one end of dwang 21 is rotated with the inner wall of sandblast case 1 and is connected, the other end of dwang 21 runs through the lateral wall of sandblast case 1 through the axle sleeve, dwang 21 outer lane just is located the inside brush section of thick bamboo 14 that has cup jointed of sandblast case 1, through the setting of dwang 21 and brush section of thick bamboo 14, make driving motor 19 can drive dwang 21 and brush section of thick bamboo 14 rotation, continue to clean placing platform 11 and filter 16, will block up sand grain and waste residue on filter 16 and placing platform 11 and clear up, prevent to block up.

One end of the rotating rod 21 is rotationally connected with a limit groove 12, a limit block 13 matched with the limit groove 12 is arranged on one side of the inner wall of the sand blasting box 1, a through groove is arranged on one side of the sand blasting box 1 and located at the adjacent position of the rotating rod 21, a plurality of hairbrush strips 20 are connected to the inner wall of the sand blasting box 1 and located in the through groove, through the arrangement of the hairbrush strips 20, the hairbrush barrel 14 is rotationally cleaned by a driving motor 19 and the through groove required to be formed by the displacement of an electric push rod 27, sand grains and waste residues inside the sand blasting box 1 can not leak out of the sand blasting box 1 through the hairbrush strips 20.

The driving motor 19 is installed to one side of the sand-blasting box 1, the output shaft of the driving motor 19 is connected with the end transmission of the rotating rod 21, the fixed block 25 is installed at the bottom of the driving motor 19, the chute 24 is formed in one side of the sand-blasting box 1 and located at the lower end of the through groove, one end of the fixed block 25, which is close to the chute 24, is in sliding connection with the chute 24, the supporting plate 28 is fixedly connected with the lower end of one side outer wall of the sand-blasting box 1, the electric push rod 27 is installed on one side wall of the supporting plate 28, which is close to the driving motor 19, the output end of the electric push rod 27 is fixedly installed on one side of the fixed block 25, and through the arrangement of the electric push rod 27, the driving motor 19 can rotate on the side to enable the brush cylinder 14 to rotate on the filter plate 16 to clean and meanwhile can displace to enable cleaning to be more comprehensive.

The conveying component comprises a high-pressure air pump 26 which is arranged below the sand storage box 3 and fixedly mounted on the side wall of the screening bin 2, the input end of the high-pressure air pump 26 is connected with a conveying pipe 8, one end, away from the high-pressure air pump 26, of the conveying pipe 8 is communicated with the sand blasting gun 7, the bottom of the sand storage box 3 is communicated with the inside of the conveying pipe 8, sand grains in the sand storage box 3 fall into the inside of the conveying pipe 8 through the arrangement of the conveying pipe 8, and the sand grains are blown into the sand blasting gun 7 through the high-pressure air pump 26 to finish circulating conveying.

The dust removing mechanism comprises a dust removing box 4 arranged on the side wall of the sand spraying box 1, an air pump 5 is arranged at the top of the dust removing box 4, a cloth bag filter 10 is arranged in the dust removing box 4, one end of the cloth bag filter 10 is communicated with a connecting pipe 6, one end of the connecting pipe 6, far away from the cloth bag filter 10, penetrates through the outer wall of one side of the dust removing box 4 and is communicated with the air pump 5, one end, far away from the connecting pipe 6, of the air pump 5 is communicated with an exhaust pipe 9, one end, far away from the air pump 5, of the exhaust pipe 9 penetrates through the sand spraying box 1 and extends into the interior of the sand spraying box 1, a circular filter 22 is fixedly arranged in an inner cavity of one end, extending into the sand spraying box 1, and sand is prevented from being broken into the cloth bag filter 10 in the exhaust pipe 9 when the sand is sprayed in the sand spraying box 1, so that the operation of the air pump 5 is prevented from being blocked and influenced.

Placing the both ends of platform 11 and the both sides inner wall fixed connection of sandblast case 1, the bottom of sandblast case 1 just is located the top fixed mounting of screening storehouse 2 and has square filter screen 23, the bottom of sandblast case 1 and the top fixed connection of screening storehouse 2, waste collection box 15 and the interior bottom sliding connection of screening storehouse 2, baffle 17 is installed to one side of vibrating motor 18 and the bottom that is located filter 16, through the setting of baffle 17, prevents that the waste residue that screening storehouse 2 whereabouts from dropping on vibrating motor 18 influence the operation.

The first chamber door 29 is articulated to sandbox 1 one side, and dust removal case 4 one side articulates there is second chamber door 30, and the one side lower extreme in screening storehouse 2 articulates there is bin door 32, and the equal fixed mounting in bottom four corners department in screening storehouse 2 has supporting leg 31, through the setting of supporting leg 31, increases the holistic steadiness of sandblast.

The use principle and the advantages are that: this scheme is in the use, when the sandblast, through putting the object of sandblast on placing the platform 11, start the sandblast rifle 7 to the object sandblast, sand grain after polishing drops on filter 16 with the waste residue that grinds off on the object, afterwards produce vibrations through vibrating motor 18, make less waste residue drop on waste collection box 15 through filter plate 16, sand grain after polishing is great through the vibrations through screening division storehouse 2 with store up sand 3 junction upper end and enter into the sand inlet entering store up sand box 3 inside and drop to transmission pipe 8 in, carry out the sandblast once more in the sandblast rifle 7 with the sand grain through high-pressure air pump 26, make the compounding of residue after the sandblast and sand grain sieve, thereby guarantee that the sand grain can keep certain purity cyclic utilization once more, promote the sandblast quality.

The long-time sand blasting can enable part of waste residues and sand grains to fall inside the filter plate 16 and the placing table 11, blockage is easy to occur, the driving motor 19 drives the rotating rod 21 to rotate and drives the brush cylinder 14 to rotate together so as to continuously clean the filter plate 16 and the placing table 11, and the electric push rod 27 drives the driving motor 19 to generate displacement, so that the brush cylinder 14 can clean the bottom of the filter plate 16 and the placing table 11 more comprehensively, blockage is prevented, cleanliness of the placing table 11 and the filter plate 16 is guaranteed, and the filtering effect is improved.

During sand blasting operation, a large amount of dust with tiny impurities can be generated in the sand blasting box 1 during sand blasting, the air with dust impurities in the sand blasting box 1 is pumped out through the exhaust pipe 9 by starting the air pump 5, the air is transmitted to the bag filter 10 of the dust removal box 4 through the connecting pipe 6 for internal installation, the circular filter screen 22 of the exhaust pipe 9 internal installation is used, the sand grains and waste residues splashed during sand blasting can be prevented from being transmitted to the air pump 5 by the suction pipe 9 for operation, the dust is prevented from being scattered in the sand blasting box 1, and the air leaks to an operation site, so that the outside air is polluted.

To sum up: this sand blasting machine can sieve and retrieve the residue and the sand grain that produce after the sandblast effectively, has avoided current sand blasting machine when the sandblast, and the residue mixes together with the sand grain and can't sieve it and recycle again the phenomenon to guaranteed the quality of sandblast, increased the effect of filtering the recovery, increased the practicality of sand blasting machine.

In this embodiment, the power mechanism or power unit includes, but is not limited to, an engine, an electric motor, a pneumatic tool, a hydraulic pump, and the like. The power unit also comprises a direct power source and an indirect power source, wherein the direct power source can provide power for the power unit, such as an engine, a motor and the like, and the indirect power source comprises a cylinder, a hydraulic cylinder and the like. The power mechanism or the power unit can drive the execution unit to do linear reciprocating motion through the cooperation of a gear and a rack, the cooperation of a sliding block and a sliding groove, the cooperation of a screw rod and a nut, and the like.

In this embodiment, the transmission mechanism or transmission unit includes a speed reducer, a gearbox, a worm gear mechanism, a link mechanism, a compound mechanism, and the like. The transmission mechanism or the transmission unit is used for transmitting power from the power mechanism or the power unit to the execution mechanism or the execution unit.

In this embodiment, the actuator or actuator unit includes, but is not limited to, a compression mechanism, a rotation mechanism, a swing mechanism, a vibration mechanism, a lift mechanism, a cutting mechanism, and the like.

Those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the embodiments, and are intended to be included within the scope of the claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. The utility model provides a sand blasting machine, includes sand blasting box (1), intercommunication screening storehouse (2) in sand blasting box (1) bottom, sets up in screening storehouse (2) inside waste collection box (15), install the dust removal mechanism in sand blasting box (1) one side, install sand blasting gun (7) at the interior top of sand blasting box (1) to and set up and adorn in the inside platform (11) of placing of sand blasting box (1), a serial communication port, internally mounted in screening storehouse (2) has filter (16), vibrating motor (18) are installed to bottom one side of filter (16), one side top of screening storehouse (2) is connected with sand storage box (3), sand inlet with screening storehouse (2) inside intercommunication is seted up at one side top that is close to sand storage box (3), the bottom of sand storage box (3) is provided with conveying component, conveying component's input and the inside intercommunication of storing sand box (3), conveying component output runs through the top of sand blasting box (1) and sand blasting gun (7) intercommunication.

2. The sand blasting machine according to claim 1, wherein a rotating rod (21) is horizontally arranged between the placement table (11) and the filter plate (16), one end of the rotating rod (21) is rotatably connected with the inner wall of the sand blasting box (1), the other end of the rotating rod (21) penetrates through the side wall of the sand blasting box (1) through a shaft sleeve, and a brush cylinder (14) is sleeved on the outer ring of the rotating rod (21) and positioned inside the sand blasting box (1).

3. The sand blasting machine according to claim 2, wherein one end of the rotating rod (21) is rotatably connected with a limiting groove (12), a limiting block (13) matched with the limiting groove (12) is arranged on one side of the inner wall of the sand blasting box (1), a through groove is formed in one side of the sand blasting box (1) and located at an adjacent position of the rotating rod (21), and a plurality of hairbrush strips (20) are connected to the inner wall of the sand blasting box (1) and located in the through groove.

4. A sand blasting machine according to claim 3, characterized in that a driving motor (19) is installed on one side of the sand blasting box (1), an output shaft of the driving motor (19) is in transmission connection with an end part of a rotating rod (21), a fixed block (25) is installed at the bottom of the driving motor (19), a chute (24) is formed in one side of the sand blasting box (1) and at the lower end of a through groove, one end, close to the chute (24), of the fixed block (25) is in sliding connection with the chute (24), a supporting plate (28) is fixedly connected with the lower end of the outer wall of one side of the sand blasting box (1), an electric push rod (27) is installed on one side wall, close to the driving motor (19), of the supporting plate (28), and the output end of the electric push rod (27) is fixedly installed on one side of the fixed block (25).

5. The sand blasting machine according to claim 1, wherein the conveying assembly comprises a high-pressure air pump (26) which is arranged below the sand storage box (3) and fixedly arranged on the side wall of the screening bin (2), the input end of the high-pressure air pump (26) is connected with a conveying pipe (8), one end, far away from the high-pressure air pump (26), of the conveying pipe (8) is communicated with the sand blasting gun (7), and the bottom of the sand storage box (3) is communicated with the inside of the conveying pipe (8).

6. The sand blasting machine according to claim 1, wherein the dust removing mechanism comprises a dust removing box (4) arranged on the side wall of the sand blasting box (1), an air extracting pump (5) is arranged at the top of the dust removing box (4), a cloth bag filter (10) is arranged in the inner part of the dust removing box (4), a connecting pipe (6) is communicated with one end of the cloth bag filter (10), one end of the connecting pipe (6) away from the cloth bag filter (10) penetrates through the outer wall of one side of the dust removing box (4) and is communicated with the air extracting pump (5), one end of the air extracting pump (5) away from the connecting pipe (6) is communicated with an air extracting pipe (9), one end of the air extracting pipe (9) away from the air extracting pipe (5) penetrates through the sand blasting box (1) and extends into the sand blasting box (1), and a round filter screen (22) is fixedly arranged in an inner cavity of one end of the air extracting pipe (9) extending into the sand blasting box (1).

7. The sand blasting machine according to claim 1, wherein two ends of the placing table (11) are fixedly connected with two side inner walls of the sand blasting box (1), a square filter screen (23) is fixedly arranged at the bottom of the sand blasting box (1) and at the top of the screening bin (2), the bottom of the sand blasting box (1) is fixedly connected with the top of the screening bin (2), the waste collection box (15) is slidably connected with the inner bottom of the screening bin (2), and a baffle (17) is arranged at one side of the vibrating motor (18) and at the bottom of the filter plate (16).

8. The sand blasting machine according to claim 6, wherein a first box door (29) is hinged to one side of the sand blasting box (1), a second box door (30) is hinged to one side of the dust removing box (4), a bin door (32) is hinged to the lower end of one side of the screening bin (2), and supporting legs (31) are fixedly installed at four corners of the bottom of the screening bin (2).