Steel mold surface cleaning device for prefabricated part production

Abstract

The invention relates to the technical field of surface cleaning devices, and discloses a prefabricated part production steel mold surface cleaning device which comprises a conveying belt, the conveying belt continuously moves in the preset direction, the top of the conveying belt is sequentially provided with a grinding assembly and a dust suction assembly in the conveying direction, and the dust suction assembly is located at the downstream position of the grinding assembly. The dust collection assembly is internally provided with the scrap cleaning assembly, the tops of the dust collection assembly and the polishing assembly are connected with the exhaust pipes, the bottom ends of the two exhaust pipes are jointly connected to the same connecting pipe, the steel dies with different thicknesses are matched through the telescopic rod, and the driving motor drives the polishing head to remove impurity residues. The dust suction assembly sucks impurities in time by means of a negative pressure environment formed by an exhaust fan, air spraying heads symmetrically arranged in the scrap cleaning assembly rotate to blow impurities slightly attached to the surface, an ion generator neutralizes static electricity to prevent secondary adsorption of the impurities, surface impurity residues are avoided, and it is guaranteed that subsequent prefabricated part pouring is not affected; the problem that impurities are easy to adhere in traditional cleaning is solved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of surface cleaning devices, in particular to a steel mold surface cleaning device for prefabricated component production. BACKGROUND

[0002] The steel mold for prefabricated component production is a special forming tool made of steel plate as the core material and is used for the large-scale production of prefabricated concrete components (such as wallboards and floorboards) in factories. The main structure of the steel mold is made of high-strength hot-rolled steel plates (thickness 4-8 mm) and is processed through laser cutting and precise bending processes. The surface of the steel mold is flat and is widely used in key parts such as the base, frame and reinforcing ribs of the mold.

[0003] The steel mold surface cleaning device for prefabricated component production is designed to solve the problem of residual concrete hardening and rust on the steel mold after repeated use. In the prior art, the surface of the steel mold for prefabricated component production is cleaned by first manually knocking the surface of the steel mold with a rubber hammer to preliminarily knock off the large concrete residues attached to the surface, then placing the steel mold on a conveying belt and driving the steel wire brush head to rotate at high speed to polish the surface of the steel mold, thereby further polishing and removing small impurities on the surface of the steel mold.

[0004] The steel mold processed by the polishing device has a large amount of loose and scattered impurities attached to the surface of the steel mold. These impurities mainly include fine cement particles that are not completely removed and metal scraps generated during the polishing process. The pollutants composed of powder and scraps can affect the next pouring of prefabricated components. The existing solution is to flush the surface of the steel mold with a water gun, but the water flow composed of cement powder and metal scraps can easily block the filter element, resulting in frequent replacement of the filter element. SUMMARY

[0005] To solve the problems of incomplete cleaning of the steel mold, pollution and easy blockage of the filter element caused by water flushing, the application provides a steel mold surface cleaning device for prefabricated component production.

[0006] The steel mold surface cleaning device for prefabricated component production provided by the application adopts the following technical scheme:

[0007] A steel mold surface cleaning device for prefabricated component production, comprising a conveying belt, the conveying belt continuously moves along a predetermined direction, a polishing assembly and a dust collection assembly are sequentially arranged on the top of the conveying belt in the conveying direction, the dust collection assembly is located downstream of the polishing assembly, a scrap removal assembly is arranged inside the dust collection assembly, and the top of the dust collection assembly and the top of the polishing assembly are both connected with an air extraction pipe, the bottom ends of the two air extraction pipes are connected to a connecting pipe, the bottom of the connecting pipe is connected to an air extractor, and one end of the air extractor is provided with a purification assembly.

[0008] The dust suction assembly comprises a second protective box, a wind box is fixedly connected in the second protective box, second movable openings are formed in the two sides of the second protective box, and a flow channel is formed between the wind box and the second protective box.

[0009] The dust removal assembly comprises a fan blade arranged in the wind box, a connecting rod is fixedly connected to the bottom of the fan blade, the bottom end of the connecting rod is fixedly connected with a rotating block, a positioning and connecting circular block is rotatably arranged on the outer wall of the rotating block, the circular block is fixedly connected with the wind box, a blower is arranged on the back of the wind box, and the blower can drive the fan blade to rotate to generate air flow.

[0010] Preferably, the polishing assembly comprises a first protective box, first movable openings are formed in the two sides of the first protective box for the steel mold to enter and exit, an extension rod is fixedly connected to the top of the inner wall of the first protective box, a driving motor for providing rotary power is fixedly arranged at the bottom of the extension rod, a main shaft is rotatably connected to the bottom of the driving motor, and a polishing head is arranged at the bottom end of the main shaft.

[0011] Preferably, the purification assembly comprises a filter box for purifying the dust-containing air flow, a transmission pipe is fixedly connected to one side of the filter box, the transmission pipe is connected with the air extractor to receive the dust-containing gas, a partition plate is fixedly connected to the inner wall of the filter box, a water tank for washing the air flow is arranged on one side of the partition plate close to the transmission pipe, the transmission pipe extends below the liquid level of the water tank to realize sufficient contact between the gas and the water, a filter block is arranged on the other side of the partition plate, and a plurality of exhaust holes are formed in one side of the filter box for exhausting the purified gas.

[0012] Preferably, the air injection heads are symmetrically arranged on the two sides of the rotating block, and the air injection ports of the air injection heads face downward.

[0013] Preferably, a rubber block is arranged at the bottom of the inner wall of the second movable opening, an ion generator is arranged on the bottom of the wind box, and the installation position of the ion generator is higher than the bottom of the flow channel.

[0014] Preferably, a filter block is arranged between the inner wall of the filter box and the partition plate, and the installation direction of the filter block is perpendicular to the direction of the air flow.

[0015] Preferably, an installation block is fixedly connected to the top of the partition plate, a grid plate is threadedly arranged in the installation block, a plurality of flow-through openings for the air flow to pass through are formed in the grid plate, the flow-through openings on the grid plate are inclined structures, and the height of the inlet end of the flow-through opening is lower than the height of the outlet end along the flow direction of the air flow in the filter box.

[0016] Preferably, the cross section of the wind box is in the shape of an isosceles trapezoid, and the two side walls are symmetrically and outwardly inclined relative to the vertical direction.

[0017] In summary, the present application includes the following beneficial technical effects:

[0018] 1. The telescopic rod is adapted to different thickness steel molds, the driving motor drives the polishing head to remove impurities, the dust suction assembly forms a negative pressure environment with the help of the air extractor to timely suck in impurities, the symmetrically arranged air jet head in the debris removal assembly rotates to blow off the slightly attached impurities on the surface, the ion generator neutralizes static electricity to prevent secondary adsorption of impurities, avoids surface impurity residues, ensures that the subsequent prefabricated component pouring is not affected, and solves the problem that impurities are easily attached in traditional cleaning.

[0019] 2. The multi-process treatment of dust-containing gas flow includes water washing through the transmission pipe, inclined interception of the grid plate, and vertical filtration of the filter block, and finally clean gas is discharged, without air pollution; and the whole process does not need water, and will not produce water flow containing cement powder and metal scraps, avoiding the problem of frequent blockage and replacement of filter cores caused by traditional water gun washing, and ensuring continuous and stable operation of the device.

[0020] 3. The isosceles trapezoidal structure of the wind box makes the airflow evenly diffuse, cooperates with the rubber block in the second protective box to reduce the gap and enhance the negative pressure dust suction sealing performance, ensures that different specifications of steel molds can obtain uniform and efficient cleaning effect, and avoids the pollution of the working environment caused by the scattering of impurities. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0022] Figure 2 It is a schematic diagram of the back structure of the present application.

[0023] Figure 3 It is a schematic diagram of the structure of the first protective box and the second protective box of the present application.

[0024] Figure 4 It is a schematic diagram of the bottom structure of the second protective box of the present application.

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the second protective box of the present application.

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the filter box of the present application.

[0027] Figure 7 It is a schematic diagram of the structure of the present application Figure 6 It is an enlarged schematic diagram of the structure at A in the present application.

[0028] Figure 8 It is a schematic diagram of the grid plate structure of the present application.

[0029] Explanation of reference signs: 1, conveying belt; 2, polishing assembly; 201, first protective box; 202, first movable opening; 203, telescopic rod; 204, driving motor; 205, main shaft; 206, polishing head; 3, dust suction assembly; 301, second protective box; 302, wind box; 303, flow-through groove; 304, second movable opening; 305, rubber block; 4, scrap removal assembly; 401, fan blade; 402, connecting rod; 403, circular block; 404, rotating block; 405, air jet head; 406, air blower; 407, ion generator; 5, air extraction pipe; 501, connecting pipe; 502, air extraction fan; 6, purification assembly; 601, filter box; 602, partition; 603, conveying pipe; 604, exhaust hole; 605, filter block; 606, mounting block; 607, grid plate; 6071, flow-through opening. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Reference Figures 1-8 The present application provides a steel mold surface cleaning device for prefabricated component production, which comprises a conveying belt 1 continuously moving along a predetermined direction, and a polishing assembly 2 and a dust suction assembly 3 are sequentially arranged on the top of the conveying belt 1 in the conveying direction, the dust suction assembly 3 is located at a downstream position of the polishing assembly 2, a scrap removal assembly 4 is arranged inside the dust suction assembly 3, and the top of the dust suction assembly 3 and the polishing assembly 2 are both connected with an air extraction pipe 5, the bottom ends of the two air extraction pipes 5 are connected to a connecting pipe 501, the bottom of the connecting pipe 501 is connected with an air extraction fan 502, and one end of the air extraction fan 502 is provided with a purification assembly 6.

[0032] The dust suction assembly 3 comprises a second protective box 301, a wind box 302 is fixedly connected inside the second protective box 301, second movable openings 304 are formed on the two sides of the second protective box 301, a flow-through groove 303 is formed between the wind box 302 and the second protective box 301, and the second movable openings 304 and the flow-through groove 303 are mutually penetrated.

[0033] The scrap removal assembly 4 comprises a fan blade 401 arranged inside the wind box 302, the bottom of the fan blade 401 is fixedly connected with a connecting rod 402, the bottom end of the connecting rod 402 is fixedly connected with a rotating block 404, a circular block 403 for positioning and connection is rotatably sleeved on the outer wall of the rotating block 404, the circular block 403 is fixedly connected with the wind box 302, an air blower 406 is mounted on the back of the wind box 302, and the air blower 406 can drive the fan blade 401 to rotate to generate air flow.

[0034] When the suction fan 502 is started, a negative pressure environment is quickly formed inside the suction pipe 5 and the connecting pipe 501, and the impurities floating around the polishing assembly 2 and the impurities on the surface of the steel mold in the area of the dust collection assembly 3 are strongly sucked in through the suction pipe 5, effectively preventing the impurities from spreading; the air blower 406 in the scrap removal assembly 4 is first operated to provide power for the entire scrap removal process, driving the high-speed rotation of the fan blade 401 arranged inside the bellows 302, and the connecting rod 402 fixedly connected to the bottom of the fan blade 401 will rotate with the fan blade 401, and the rotating block 404 fixedly connected to the bottom end of the connecting rod 402, so that the air jet head 405 at the bottom thereof rotates, and the air flow generated by the air blower 406 is uniformly and powerfully sprayed downward to the surface of the steel mold, so that these impurities are more easily sucked in by the negative pressure generated by the dust collection assembly 3.

[0035] The dust-containing airflow sucked in by the suction pipe 5 will enter the suction fan 502 through the connecting pipe 501, and then under the conveying action of the suction fan 502, it will enter the purification assembly 6 installed at one end of the suction fan 502, and after multiple processing procedures of the purification assembly 6, the impurities in the airflow are removed, and finally clean gas is discharged.

[0036] The polishing assembly 2 first polishes the surface of the steel mold, which can effectively remove the impurities on the surface; the dust collection assembly 3 cooperates with the polishing assembly 2 to suck in the impurities generated during polishing in a timely manner by means of the negative pressure environment formed by the suction fan 502, the suction pipe 5 and the connecting pipe 501, thereby avoiding the pollution of the working environment caused by the floating of impurities and preventing the adhesion of impurities on the surface of the steel mold affecting the next pouring of the prefabricated component; the scrap removal assembly 4 is further used to clean the residual debris on the surface, and the purification assembly 6 is used to treat the dust-containing airflow to avoid direct emission to pollute the air, which meets the environmental protection requirements, and compared with the traditional water gun washing method, no water flow containing cement powder and metal debris is generated, thereby avoiding the problem of frequent replacement caused by filter core blockage.

[0037] In a preferred embodiment, the polishing assembly 2 comprises a first protective box 201, first movable openings 202 are formed on both sides of the first protective box 201 for the steel mold to enter and exit, a telescopic rod 203 is fixedly connected to the inner wall top of the first protective box 201, a driving motor 204 for providing rotary power is fixedly installed at the bottom of the telescopic rod 203, a main shaft 205 is rotationally connected to the bottom of the driving motor 204, and a polishing head 206 is assembled at the bottom end of the main shaft 205.

[0038] The steel mold moves with the conveying belt 1 and enters the first protective box 201 through the first movable opening 202 opened on both sides of the first protective box 201. According to the thickness of the steel mold, the telescopic rod 203 fixedly connected to the top inner wall of the first protective box 201 is adjusted in extension and retraction, driving the driving motor 204 fixedly installed at the bottom to move up and down, so that the polishing head 206 assembled at the bottom end of the main shaft 205 rotatably connected to the bottom of the driving motor 204 is attached to the surface of the steel mold. Then the driving motor 204 is started, driving the main shaft 205 to rotate, which in turn drives the polishing head 206 to rotate, polishing the surface of the steel mold and removing the residual substances on the surface.

[0039] The first protective box 201 can enclose the polishing process inside, preventing the impurities generated by polishing from drifting outward and reducing the pollution to the surrounding environment. The arrangement of the first movable opening 202 ensures that the steel mold can smoothly enter and exit the first protective box 201 without affecting the conveying of the steel mold by the conveying belt 1. The telescopic rod 203 can flexibly adjust the height of the polishing head 206 according to the thickness of the steel mold, so that the polishing head 206 can always be attached to the surface of the steel mold of different thicknesses, ensuring uniform and consistent polishing effect. The driving motor 204 provides power, which is transmitted to the polishing head 206 through the main shaft 205, so that the polishing head 206 can efficiently rotate and polish, improving the polishing efficiency and quality and effectively removing the impurities on the surface of the steel mold.

[0040] In a preferred embodiment, the purification assembly 6 includes a filter box 601 for purifying the dust-containing gas flow. One side of the filter box 601 is fixedly connected with a transmission pipe 603 connected with the air extractor 502 to receive the dust-containing gas. The inner wall of the filter box 601 is fixedly connected with a partition plate 602, one side of which is provided with a water tank for water washing purification of the gas flow, and the transmission pipe 603 extends below the liquid level of the water tank to realize sufficient contact between the gas and the water. The other side of the partition plate 602 is provided with a filter block 605, and a plurality of exhaust holes 604 are formed on one side of the filter box 601 for exhausting the purified gas.

[0041] The air extractor 502 delivers the dust-containing gas flow (fine cement particles and metal scraps) into the filter box 601 through the transmission pipe 603. The partition plate 602 fixedly connected to the inner wall of the filter box 601 divides the internal space of the filter box 601. The transmission pipe 603 extends below the liquid level of the water tank on the side of the partition plate 602 close to the transmission pipe 603. After the dust-containing gas flow enters the water, part of the impurities (such as larger metal scraps and part of the cement particles) in the gas flow will be adsorbed and settled by the water, realizing preliminary water washing purification. The gas flow after water washing passes through the partition plate 602 and enters the other side of the partition plate 602, contacting the filter block 605 installed between the inner wall of the filter box 601 and the partition plate 602. The filter block 605 further filters the remaining fine impurities in the gas flow, and the finally purified gas is exhausted through the plurality of exhaust holes 604 formed on one side of the filter box 601.

[0042] The transmission pipe 603 extends below the water level of the water tank, so that the dust-containing airflow is in full contact with the water, and part of the impurities in the airflow can be effectively removed. The water washing method will not produce water flow that easily blocks the filter element, as in the traditional water gun washing. The partition plate 602 divides the filter box 601 into a water washing area and a filtering area, so that the purification process is carried out in stages, and the purification effect is improved. The filter block 605 can further filter small impurities, ensure that the discharged gas meets the environmental protection standards, and avoid air pollution.

[0043] In a preferred embodiment, the air jet head 405 is symmetrically arranged on both sides of the rotating block 404, and the air outlet of the air jet head 405 faces downward.

[0044] The blower 406 is started to drive the fan blade 401 arranged inside the bellows 302 to rotate. The connecting rod 402 fixedly connected to the bottom of the fan blade 401 rotates with the fan blade 401. The rotating block 404 fixedly connected to the bottom end of the connecting rod 402 rotates in the circular block 403. At this time, the airflow generated by the blower 406 is sprayed out through the air jet head 405 and blows toward the surface of the steel mold, thereby blowing and cleaning the impurities such as fine cement particles and metal scraps adhered to the surface of the steel mold.

[0045] The blower 406 provides power to make the fan blade 401 generate airflow, which is sprayed to the surface of the steel mold through the air jet head 405, so as to effectively blow away the impurities adhered to the surface of the steel mold, especially some fine impurities that are still slightly adhered after polishing, thereby improving the thoroughness of impurity cleaning. The circular block 403 plays a positioning role for the rotating block 404, so as to ensure that the rotating block 404 and the air jet head 405 stably rotate, and avoid uneven blowing due to rotation deviation.

[0046] In a preferred embodiment, the bottom of the inner wall of the second movable opening 304 is provided with a rubber block 305, and the bottom of the bellows 302 is provided with an ion generator 407, and the installation position of the ion generator 407 is higher than the bottom of the flow channel 303.

[0047] The rubber block 305 reduces the gap between the second movable opening 304 and the steel mold, enhances the sealing performance of the inside of the second protective box 301, improves the negative pressure dust collection effect, and ensures that the impurities can be effectively sucked into the flow channel 303. The flow channel 303 provides a channel for the flow of impurities, so as to facilitate the impurities to be sucked away by the suction pipe 5. The ions generated by the ion generator 407 can neutralize static electricity, prevent the impurities from being adsorbed on the surface of the steel mold due to static electricity, further improve the thoroughness of impurity cleaning, and ensure the cleanliness of the surface of the steel mold.

[0048] In a preferred embodiment, a filter block 605 is installed between the inner wall of the filter box 601 and the partition plate 602, and the installation direction of the filter block 605 is perpendicular to the airflow direction.

[0049] The installation direction of the filter block 605 is perpendicular to the air flow direction, so that the air flow can fully contact the filter block 605, the residual impurities in the air flow are maximally intercepted, the purification effect is improved, and the discharged gas is ensured to be clean and pollution-free.

[0050] In a preferred embodiment, the top of the partition plate 602 is fixedly connected with a mounting block 606, the inside of the mounting block 606 is assembled with a grid plate 607 through threaded connection, a plurality of flow-through openings 6071 for air flow circulation are formed in the grid plate 607, and the flow-through openings 6071 on the grid plate 607 are inclined structures, the height of the inlet end of the flow-through openings 6071 is lower than the height of the outlet end along the flow direction of the air flow in the filter box 601.

[0051] After the dust-containing air flow is washed by water, the air flow flows upward to the mounting block 606 fixedly connected to the top of the partition plate 602. The inside of the mounting block 606 is assembled with the grid plate 607 through threaded connection, a plurality of flow-through openings 6071 for air flow circulation are formed in the grid plate 607, and the flow-through openings 6071 are inclined structures; the air flow enters the flow-through openings 6071 from the inlet end, and due to the inclined arrangement of the flow-through openings 6071, the air flow is diverted during the flow process, part of the larger particle impurities that have not yet settled will impact on the grid plate 607 under the action of inertia, or will be settled due to the action of gravity, and the air flow flows out of the outlet end of the flow-through openings 6071 and continues to enter the subsequent filter block 605 for filtering; the grid plate 607 can preliminarily intercept and filter the air flow after water washing, remove part of the larger particle impurities, reduce the filtering burden of the subsequent filter block 605, and prolong the service life of the filter block 605.

[0052] In a preferred embodiment, the cross section of the wind box 302 is in isosceles trapezoidal structure, and the two side walls are symmetrically and outwardly inclined relative to the vertical direction; the isosceles trapezoidal structure and the inclined side walls of the wind box 302 can make the air flow more uniformly diffuse inside the wind box 302.

[0053] Working principle:

[0054] The steel mold is carried by the conveying belt 1 and continuously moves in a preset direction; first enters the polishing assembly 2 area, the driving motor 204 drives the polishing head 206 to rotate at high speed through the main shaft 205, the surface of the mold is polished, and the attached cement particles and metal oxides are removed; the debris generated by polishing is enclosed in the first protective box 201; then the mold enters the downstream dust collection assembly 3 area; the exhaust fan 502 is started, a negative pressure is formed inside the polishing assembly 2 and the dust collection assembly 3 through the suction pipe 5 and the connecting pipe 501, and the dust is sucked; at the same time, the debris removal assembly 4 in the dust collection assembly 3 starts to work: the air blower 406 drives the impeller 401 to rotate, the airflow is uniformly diffused through the trapezoidal structure of the air bellow 302, and is sprayed downward through the air jet head 405 at the bottom of the rotating block 404, so that the debris remaining on the surface of the mold is blown away; the ion generator 407 generates ion wind, neutralizes the static electricity on the surface of the mold, and prevents the debris from being adsorbed again; the debris and dust blown up are sucked into the flow channel 303 through the second movable opening 304 under the action of the negative pressure, and are finally sucked away by the suction pipe 5; the dust-containing airflow enters the exhaust fan 502 through the connecting pipe 501, and then is pressed into the purification assembly 6 through the conveying pipe 603; the airflow first enters the water tank for water washing, and part of the impurities are adsorbed and settled by water; then the airflow passes through the inclined flow opening 6071 of the grid plate 607, and the large-particle impurities are impacted on the grid plate 607 and settled under the action of inertia; finally, the airflow vertically passes through the filter block 605, the residual small impurities are completely filtered, and the purified gas is discharged from the exhaust hole 604.

[0055] Finally, a few points should be noted: first, in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0056] Secondly: the present application discloses the structure involved in the embodiment of the present application, other structures can refer to the usual design, in the case of no conflict, the same embodiment and different embodiments of the present application can be combined with each other;

[0057] Finally: the above only for the preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0058] The above are the preferred embodiments of the present application, and are not used to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application shall be included in the protection scope of the present application.

Claims

1. A steel mould surface cleaning device for precast construction production, comprising a conveyor belt (1), characterised in that: The transmission belt (1) continuously moves along a preset direction, the top of which is sequentially provided with a polishing assembly (2) and a dust suction assembly (3) in the transmission direction, the dust suction assembly (3) is located at a downstream position of the polishing assembly (2), the dust suction assembly (3) is internally provided with a scrap removal assembly (4), and the top of the dust suction assembly (3) and the polishing assembly (2) are both connected with an air suction pipe (5), the bottom ends of the two air suction pipes (5) are connected to a connecting pipe (501) in common, the bottom of the connecting pipe (501) is connected with an air suction fan (502), one end of the air suction fan (502) is provided with a purification assembly (6). The dust suction assembly (3) comprises a second protective box (301), which is fixedly connected with a bellows (302) internally, second movable openings (304) are formed in the two sides of the second protective box (301), a flow-through groove (303) is formed between the bellows (302) and the second protective box (301), and the second movable openings (304) and the flow-through groove (303) are mutually penetrated. The scrap removal assembly (4) comprises a fan blade (401), which is arranged in the bellows (302); the bottom of the fan blade (401) is fixedly connected with a connecting rod (402), the bottom end of the connecting rod (402) is fixedly connected with a rotating block (404), a circular block (403) for positioning and connection is rotatably arranged on the outer wall of the rotating block (404), the circular block (403) is fixedly connected with the bellows (302), the two sides of the rotating block (404) are fixedly connected with a jet head (405), a blower (406) is arranged on the back of the bellows (302), and the blower (406) can drive the fan blade (401) to rotate to generate airflow.

2. A steel form surface cleaning apparatus for the production of precast elements according to claim 1, characterized in that: The polishing assembly (2) comprises a first protective box (201), first movable openings (202) for the entry and exit of a steel mold are formed in the two sides of the first protective box (201), an extension rod (203) is fixedly connected to the top of the inner wall of the first protective box (201), a driving motor (204) for providing rotary power is fixedly arranged on the bottom of the extension rod (203), a main shaft (205) is rotatably connected to the bottom of the driving motor (204), and a polishing head (206) is arranged on the bottom end of the main shaft (205).

3. A steel form surface cleaning device for precast construction, according to claim 1, characterized in that: The purification assembly (6) comprises a filter box (601) for purifying dust-containing airflow, a transmission pipe (603) is fixedly connected to one side of the filter box (601), the transmission pipe (603) is connected with the air suction fan (502) to receive dust-containing gas, a partition plate (602) is fixedly connected to the inner wall of the filter box (601), a water tank for washing the airflow is arranged on the side of the partition plate (602) close to the transmission pipe (603), the transmission pipe (603) extends below the liquid level of the water tank to realize sufficient contact between the gas and the water, a filter block (605) is arranged on the other side of the partition plate (602), and a plurality of air exhaust holes (604) for exhausting the purified gas are formed in one side of the filter box (601).

4. A steel form surface cleaning apparatus for precast construction as defined in claim 1, wherein: The air jet head (405) is symmetrically arranged on both sides of the rotating block (404), and the air jet head (405) is arranged towards the downward steel mold.

5. A steel form surface cleaning device for precast construction according to claim 1, characterized in that: The bottom of the inner wall of the second movable opening (304) is provided with a rubber block (305), the bottom of the air bellow (302) is provided with an ion generator (407), and the installation position of the ion generator (407) is higher than the bottom of the flow channel (303).

6. A steel form surface cleaning apparatus for precast construction as defined in claim 3 wherein: The filter block (605) is arranged between the inner wall of the filter box (601) and the partition plate (602), and the installation direction of the filter block (605) is perpendicular to the air flow direction.

7. A steel form surface cleaning apparatus for precast construction as defined in claim 3 wherein: The top of the partition plate (602) is fixedly connected with a mounting block (606), the inside of the mounting block (606) is threadedly connected with a grid plate (607), a plurality of flow-through openings (6071) for air flow are formed in the grid plate (607), the flow-through openings (6071) on the grid plate (607) are inclined structures, and the height of the inlet end of the flow-through openings (6071) is lower than the height of the outlet end along the air flow direction in the filter box (601).

8. A steel form surface cleaning apparatus for precast construction as defined in claim 1, wherein: The cross section of the air bellow (302) is isosceles trapezoidal, and the two side walls are symmetrically and outwardly inclined relative to the vertical direction.

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