Injection device for green concrete sintered brick production pouring and use method thereof
Technical Field
The invention belongs to the technical field of green concrete sintered brick soil, and particularly relates to a spraying device for green concrete sintered brick production pouring and a using method thereof.
Background
Concrete is concrete in fact, and refers to a general name of engineering composite materials formed by cementing aggregates into a whole by cementing materials, and the term concrete generally refers to cement as the cementing materials and sand and stone as the aggregates; the cement concrete, also called common concrete, is widely applied to civil engineering, and is obtained by mixing, forming and curing water according to a certain proportion, the green concrete is mainly divided into green high-performance concrete, recycled aggregate concrete, environment-friendly concrete, smart concrete and the like, and the baked bricks are bricks for building load-bearing and non-load-bearing walls, which are prepared by taking clay, shale, coal gangue or fly ash as raw materials and forming and high-temperature roasting the raw materials, and are collectively called as the baked bricks.
Mix when having massive material in the material of original green muddy earth preparation baked brick and block up the liquid pipeline easily pouring when spraying the in-process, and then the influence is pour going on smoothly that sprays, only by a shower nozzle blowout when pouring simultaneously, can not guarantee the material roughness of operation face when spraying inefficiency and blowout, need the later stage to go to shakeout the operation face, reduced work efficiency.
Disclosure of Invention
The invention aims to provide a spraying device for casting green concrete baked brick production and a using method thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a spraying device for pouring in green concrete baked brick production comprises a bottom plate, wherein a mixing box and a crushing box are arranged above the bottom plate, the mixing box is fixedly arranged on the upper surface of the bottom plate through a fixing column a, the crushing box is fixedly arranged on the upper surface of the mixing box, a feeding hopper is arranged on the upper surface of the crushing box, a bearing a is further clamped on the upper surface of the crushing box, a rotating shaft a is sleeved on the inner side wall of the bearing a, the top end of the rotating shaft a is fixedly connected with an output shaft of a driving motor a, the driving motor a is fixedly arranged on the upper surface of the crushing box, a rotating roller is fixedly arranged at the bottom end of the rotating shaft a, a vertically through fixing roller is fixedly arranged on the inner side wall of the crushing box through a fixing column b, a plurality of teeth a are welded on the inner side wall of the fixing roller, a plurality of teeth, the lower surface of fixed roll and the upper surface laminating of backup pad, install the filter screen in the backup pad, backup pad demountable installation is in the inside of smashing the case, the inside of smashing the case is provided with and connects the hopper, the inside horizontal welding of mixing box has the baffle, connect the bottom of hopper to pass through-hole an that sets up on mixing box upper surface and the through-hole b that sets up on the baffle respectively and extend to the mixing box of baffle below, the upper surface joint of baffle has bearing b, and bearing b's inside wall has cup jointed pivot b, pivot b's top and driving motor b's output shaft fixed connection, driving motor b fixed mounting is at the upper surface of baffle, pivot b's surface fixed mounting has a plurality of stirring arm, the back of bottom plate is provided with the liquid feeding pipe, the lower fixed surface of bottom plate installs the slush pump, slush pump, The driving motor a and the driving motor b are both electrically connected with an external power supply, a liquid inlet of the slurry pump is communicated with one end of a liquid inlet pipe, the other end of the liquid inlet pipe penetrates through a through hole c formed in the bottom plate and extends to the position above the bottom plate, a pipe sleeve is sleeved on the outer surface of the liquid inlet pipe and is clamped on the lower surface of the mixing box, a liquid outlet of the slurry pump is communicated with one end of a liquid outlet pipe, the other end of the liquid outlet pipe is communicated with a liquid distribution pipe, a plurality of spray heads are fixedly installed on the liquid distribution pipe, the liquid distribution pipe is fixedly installed on the lower surface of the bottom plate through an installation block, a screw cap is clamped on the left side of the upper surface of the bottom plate, a screw thread column is in threaded connection with the inner side wall of the screw cap, a handle is welded at the top end of the, and bearing c joint is at the upper surface of spreading out the flat board, the equal fixed mounting in four corners of bottom plate lower surface has the universal wheel, the right side welding of bottom plate upper surface has the riser, the right flank welding of riser has the push rod.
Preferably, the upper surface of loading hopper articulates through the round pin axle has the apron, and the upper surface welding of apron has the pull ring.
Preferably, the teeth a and the teeth b are arranged in a staggered manner, and the distances between the teeth a and the teeth b on the same horizontal plane on the rotating roller and the fixed roller are sequentially reduced from top to bottom.
Preferably, the equal fixed mounting in the left and right sides face of backup pad has the picture peg, the slot has been seted up to the left and right sides face symmetry of smashing the incasement wall, picture peg sliding connection is at the inside wall of slot, the backup pad passes the passageway that smashes the case and openly set up and extends crushing case, the front welding of backup pad has the mounting panel, the mounting panel passes through bolt fixed mounting in the front of smashing the case.
Preferably, the outer surface of the rotating shaft a is also fixedly connected with an annular guide plate.
Preferably, the outer surface of the rotating shaft b is fixedly connected with a connecting plate, scrapers are welded on the left side face and the right side face of the connecting plate, and one side face, far away from the connecting plate, of each scraper is attached to the inner side wall of the mixing box.
Preferably, the upper surface of the spreading plate is fixedly provided with two telescopic rods, the two telescopic rods are respectively positioned at the front side and the rear side of the threaded column, and the top ends of the telescopic rods are fixedly connected with the lower surface of the bottom plate.
Preferably, the diameter of the filter screen is the same as the minimum diameter of the fixed roller.
The use method of the injection device for casting in the production of the green concrete baked brick comprises the following steps:
1) assembling, namely inserting the upper receiving hopper of the crushing box into the through hole a, fixedly installing the crushing box above the mixing box, and fixedly installing the mixing box on the upper surface of the bottom plate;
2) feeding and crushing, after the assembly in the step 1) is finished, opening a cover plate to add materials into a feeding hopper, closing the cover plate, enabling the materials to enter a position between a fixed roller and a rotating roller in a crushing box under the action of an annular guide plate, starting a driving motor a to drive the rotating shaft a to rotate, driving the rotating roller to rotate by the rotating shaft a, crushing the materials by using teeth a and teeth b which are arranged on the rotating roller and the fixed roller in a staggered mode, and sequentially reducing the distance between the teeth a and the teeth b on the same horizontal plane from top to bottom so that massive materials of the materials can be quickly crushed under the action of gravity;
3) filtering, namely after the feeding and crushing in the step 2), enabling the materials meeting the aperture to fall into a receiving hopper under the screening action of a filter screen, and further enabling the materials to enter a mixing box through the receiving hopper, and continuously crushing the materials with larger apertures;
4) mixing materials, namely, feeding the materials filtered by the filter screen in the step 3) into a mixing box through a material receiving hopper, simultaneously adding a mixed solution through a liquid inlet pipe, starting a driving motor b to drive a rotating shaft b to rotate, driving a stirring arm to rotate by the rotating shaft b to stir the materials, synchronously rotating a scraper along with the rotating shaft b under the linkage action of a connecting plate, scraping the materials adhered to the inner side wall of the mixing box by the scraper, and stopping the driving motor a6 and the driving motor b after the materials are mixed;
5) pouring and spraying, wherein after the material mixing in the step 4) is finished, a slurry pump is started to pump out the material in the material mixing box through a liquid inlet pipe (21), and the material enters a liquid distributing pipe through a liquid outlet pipe and is further sprayed out through a spray head;
6) leveling adjustment, step 5) pour the injection in-process, people move whole device through push rod cooperation universal wheel, utilize the stand flat board to the material that the shower nozzle sprayed on the operation face to level up and make its surperficial level, utilize the rotation of screw post to drive the stand flat board and upwards or move down and adjust material thickness on the operation face simultaneously.
Compared with the prior art, the invention has the beneficial effects that:
through the arranged crushing box, the driving motor a is used for driving the rotating shaft a to rotate, the rotating shaft a is used for driving the rotating roller to rotate, the rotating roller and the fixed roller are used for crushing materials, the teeth a and the teeth b which are arranged in a staggered mode are arranged on the rotating roller and the fixed roller, the distance between the teeth a and the teeth b on the same horizontal plane is sequentially reduced from top to bottom, so that massive materials can be crushed rapidly under the action of gravity, the crushing efficiency is high, and the situation that the massive materials enter the mixing box to be mixed and blocked and then are poured into the injection liquid outlet pipe in the later stage is avoided;
the filter screen is arranged, materials crushed by the rotating roller and the fixed roller are screened by the filter screen, the materials which are in accordance with the particle size diameter can quickly fall down and enter the mixing box through the receiving materials after being filtered by the filter screen, the materials which are not in accordance are continuously left between the fixed roller and the rotating roller to be crushed, meanwhile, the inserting plate is inserted into the inserting groove to limit the supporting plate, the installation is fixed and stable, the fixing plate is fixed by the bolt, the later-stage detachment of the supporting plate is facilitated, and the filter screen is further conveniently detached and cleaned;
the scraper is arranged in the mixing box, and synchronously rotates along with the rotating shaft b under the linkage action of the connecting plate, so that materials adhered to the inner side wall of the mixing box can be scraped through the scraper when the materials are mixed, the problem of material adhesion is effectively avoided, the liquid distribution pipe is arranged on the bottom plate and communicated with the liquid outlet pipe, the spraying range of green concrete is ensured by utilizing a plurality of spray heads arranged on the liquid distribution pipe, and the spraying efficiency is improved;
through being provided with the stand flat board in the bottom plate below, utilize the stand flat board can be fine to mix shower nozzle spun green earth and shakeout, cooperation universal wheel makes whole device spray when removing and pour and shakeout the operation, has promoted work efficiency, utilizes the rotation of screw thread post to drive the stand flat board upwards or the downstream simultaneously, and then can spray green earth and pour thickness and adjust simple structure, convenient to use.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a left half section of the mixing box of the present invention;
FIG. 3 is a schematic top view of the support plate of the present invention;
FIG. 4 is a bottom view of the base plate of the present invention;
FIG. 5 is a left side view of the screed according to the present invention;
FIG. 6 is an enlarged schematic view of the structure of the present invention at A;
FIG. 7 is a schematic structural view of embodiment 2 of the present invention;
in the figure: 1. a base plate; 2. a mixing box; 3. a crushing box; 4. a hopper; 5. a rotating shaft a; 6. driving a motor a; 7. a rotating roller; 8. a fixed roller; 9. a bolt; 10. a tooth a; 11. teeth b; 12. a support plate; 13. a filter screen; 14. a receiving hopper; 15. a partition plate; 16. a rotating shaft b; 17. a drive motor b; 18. a stirring arm; 19. a liquid feeding pipe; 20. a slurry pump; 21. a liquid inlet pipe; 22. a liquid outlet pipe; 23. a liquid separating pipe; 24. mounting blocks; 25. a spray head; 26. a threaded cap; 27. a threaded post; 28. a rotating shaft c; 29. flattening; 30. a universal wheel; 31. a vertical plate; 32. a push rod; 33. inserting plates; 34. a telescopic rod; 35. mounting a plate; 36. an annular guide plate; 37. a connecting plate; 38. a scraper.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-6, the present invention provides a technical solution: a green concrete baked brick production pouring injection apparatus comprises a bottom plate 1, a mixing box 2 and a crushing box 3 are arranged above the bottom plate 1, the mixing box 2 is fixedly installed on the upper surface of the bottom plate 1 through a fixing column a, the crushing box 3 is fixedly installed on the upper surface of the mixing box 2, a feeding hopper 4 is arranged on the upper surface of the crushing box 3, a bearing a is further clamped on the upper surface of the crushing box 3, a rotating shaft a5 is sleeved on the inner side wall of the bearing a, the top end of the rotating shaft a5 is fixedly connected with an output shaft of a driving motor a6, the driving motor a6 is fixedly installed on the upper surface of the crushing box 3, a rotating roller 7 is fixedly installed at the bottom end of the rotating shaft a5, a fixing roller 8 which is vertically through the fixing column b is fixedly installed on the inner side wall of the crushing box 3, a plurality of teeth a10 are welded on the inner side wall of the fixing roller 8, a plurality of teeth b11 are welded on the outer, a filter screen 13 is arranged on a support plate 12, the support plate 12 is detachably arranged inside a crushing box 3, a receiving hopper 14 is arranged inside the crushing box 3, a partition plate 15 is horizontally welded inside a material mixing box 2, the bottom end of the receiving hopper 14 respectively penetrates through a through hole a formed in the upper surface of the material mixing box 2 and a through hole b formed in the partition plate 15 and extends into the material mixing box 2 below the partition plate 15, a bearing b is clamped on the upper surface of the partition plate 15, a rotating shaft b16 is sleeved on the inner side wall of the bearing b, the top end of the rotating shaft b16 is fixedly connected with an output shaft of a driving motor b17, a driving motor b17 is fixedly arranged on the upper surface of the partition plate 15, a plurality of stirring arms 18 are fixedly arranged on the outer surface of the rotating shaft b16, a liquid feeding pipe 19 is arranged on the back surface of a bottom plate 1, a slurry pump 20 is fixedly arranged on the lower, a liquid inlet of a slurry pump 20 is communicated with one end of a liquid inlet pipe 21, the other end of the liquid inlet pipe 21 passes through a through hole c formed in a bottom plate 1 and extends to the upper part of the bottom plate 1, a pipe sleeve is sleeved on the outer surface of the liquid inlet pipe 21 and clamped on the lower surface of a mixing box 2, a liquid outlet of the slurry pump 20 is communicated with one end of a liquid outlet pipe 22, the other end of the liquid outlet pipe 22 is communicated with a liquid distribution pipe 23, a plurality of spray heads 25 are fixedly installed on the liquid distribution pipe 23, the liquid distribution pipe 23 is fixedly installed on the lower surface of the bottom plate 1 through an installation block 24, a screw cap 26 is clamped on the left side of the upper surface of the bottom plate 1, a screw thread column 27 is in threaded connection with the inner side wall of the screw thread cap 26, a handle is welded on the top end of the screw thread column 27, the bottom end of the rotating shaft c28 is fixedly connected with the top end of, a vertical plate 31 is welded on the right side of the upper surface of the bottom plate 1, and a push rod 32 is welded on the right side surface of the vertical plate 31.
In this embodiment, the types of the driving motor a6 and the driving motor b17 may be YE2-112M-4, the driving connection a is used to drive the rotating roller 7 on the rotating shaft a5 to rotate, so that the teeth b11 on the rotating roller 7 are matched with the teeth a10 on the fixed roller 8 to crush the materials, the driving motor b17 is used to drive the stirring arm 18 on the rotating shaft b16 to rotate to mix and stir the materials so that the materials are uniformly mixed, the type of the slurry pump 20 may be NL100-7, and the slurry pump 20 is used to pump the mixed materials into the liquid distribution pipe 23 and eject the mixed materials through the plurality of nozzles 25.
In this embodiment, people open the cover plate to add materials into the hopper 4 and then close the cover plate, the materials enter between the fixed roller 8 and the rotating roller 7 under the action of the annular guide plate 36, the driving motor a6 is started to drive the rotating shaft a5 to rotate, the rotating shaft a5 drives the rotating roller 7 to rotate, the materials can be crushed by the teeth a10 and the teeth b11 which are arranged on the rotating roller 7 and the fixed roller 8 in a staggered manner, the distance between the teeth a10 and the teeth b11 on the same horizontal plane is sequentially reduced from top to bottom, so that massive materials of the materials can be rapidly crushed under the action of gravity, the crushed materials fall down to enter the receiving hopper 14 under the screening action of the filter screen 13 and then enter the mixing box 2 through the receiving hopper 14, the mixed solution is added through the liquid inlet pipe 21, the driving motor b17 is started to drive the rotating shaft b16 to rotate, the rotating shaft b16 drives the stirring arm 18 to rotate to stir the materials, simultaneously, the scraper 38 synchronously rotates along with the rotating shaft b16 under the linkage action of the connecting plate 37, so that the scraper 38 scrapes off materials adhered to the inner side wall of the mixing box 2, after the materials are mixed, the driving motor a6 and the driving motor b17 are stopped, the slurry pump 20 is started to pump out the materials in the mixing box 2 through the liquid inlet pipe 21 and enter the liquid distribution pipe 23 through the liquid outlet pipe 22, the materials are sprayed out through the spray head 25, meanwhile, people move the whole device through the push rod 32 in cooperation with the universal wheel 30, the materials sprayed onto the working surface by the spray head 25 are flattened by using the flattening plate 29 to ensure that the surface of the materials is smooth, meanwhile, the flattening plate 29 is driven to move upwards or downwards by the rotation of the threaded column 27 to adjust the thickness of the materials on the working surface, and the bolt 9 is screwed down.
Specifically, the upper surface of the charging hopper 4 is hinged with a cover plate through a pin shaft, and the upper surface of the cover plate is welded with a pull ring; protect loading hopper 4 through setting up the apron, close the apron after reinforced can be with 4 inside and external isolated of loading hopper, avoid the dust impurity in the outside air to enter into through loading hopper 4 and smash 3 insides.
Specifically, the teeth a10 and the teeth b11 are arranged in a staggered manner, and the distance between the teeth a10 and the teeth b11 on the same horizontal plane on the rotating roller 7 and the fixed roller 8 is reduced from top to bottom; the material has the trend of moving downwards under the action of gravity, and the material is rapidly crushed under the action of the teeth b11 on the rotating roller 7 and the teeth a10 on the fixed roller 8, so that the crushing effect is good.
Specifically, the left side surface and the right side surface of the support plate 12 are both fixedly provided with inserting plates 33, the left side surface and the right side surface of the inner side wall of the crushing box 3 are symmetrically provided with inserting slots, the inserting plates 33 are connected to the inner side wall of the inserting slots in a sliding manner, the support plate 12 penetrates through a channel formed in the front surface of the crushing box 3 and extends out of the crushing box 3, the front surface of the support plate 12 is welded with an installation plate 35, and the installation plate 35 is; insert the slot through setting up picture peg 33 and carry on spacingly to backup pad 12, and then carry out the outrigger to filter screen 13, utilize bolt 9 to fix mounting panel 35 simultaneously, only need unscrew bolt 9 when later stage is cleared up filter screen 13 and take backup pad 12 out and just can dismantle clearance, convenient operation to filter screen 13.
Specifically, the outer surface of the rotating shaft a5 is also fixedly connected with an annular guide plate 36; the material added into the hopper 4 can be guided by the annular guide plate 36, so that the material can accurately enter between the fixed roller 8 and the rotating roller 7 to be crushed.
Specifically, the outer surface of the rotating shaft b16 is also fixedly connected with a connecting plate 37, scrapers 38 are welded on the left side surface and the right side surface of the connecting plate 37, and one side surface of each scraper 38 away from the connecting plate 37 is attached to the inner side wall of the mixing box 2; through setting up scraper blade 38, scraper blade 38 can follow pivot b16 synchronous rotation under connecting plate 37's interlock effect, and then can utilize scraper blade 38 to strike off the material of adhesion on the mixing box 2 inside wall, avoids the material adhesion to cause the material extravagant at mixing box 2 inside wall.
Specifically, two telescopic rods 34 are fixedly installed on the upper surface of the flattening plate 29, the two telescopic rods 34 are respectively located at the front side and the rear side of the threaded column 27, and the top ends of the telescopic rods 34 are fixedly connected with the lower surface of the bottom plate 1; the expansion rods 34 are arranged to support the spreader plate 29, so that the spreader plate 29 can move stably without rotating when moving upwards or downwards under the action of the threaded columns 27.
Specifically, the diameter of the filter screen 13 is the same as the minimum diameter of the fixed roller 8; the material crushed by the teeth b11 on the fixed roller 8, the teeth a10 and the rotating roller 7 can quickly fall down through the filter screen 13, and the material treatment is ensured to be quickly carried out.
The use method of the injection device for casting in the production of the green concrete baked brick comprises the following steps:
1) assembling, namely inserting the upper receiving hopper 14 of the crushing box 3 into the through hole a, fixedly installing the crushing box 3 above the mixing box 2, and fixedly installing the mixing box 2 on the upper surface of the bottom plate 1;
2) feeding and crushing, after the assembly in the step 1) is finished, opening a cover plate to feed materials into a feeding hopper 4, closing the cover plate, feeding the materials into a crushing box 3 between a fixed roller 8 and a rotating roller 7 under the action of an annular guide plate 36, starting a driving motor a6 to drive a rotating shaft a5 to rotate, driving the rotating roller 7 to rotate by the rotating shaft a5, crushing the materials by using teeth a10 and teeth b11 which are arranged on the rotating roller 7 and the fixed roller 8 in a staggered manner, and sequentially reducing the distance between the teeth a10 and the teeth b11 on the same horizontal plane from top to bottom to ensure that massive materials can be quickly crushed under the action of gravity;
3) filtering, after the feeding and crushing in the step 2), the materials which accord with the aperture fall into the receiving hopper 14 under the screening action of the filter screen 13, and then enter the mixing box 2 through the receiving hopper 14, and the materials with larger aperture are continuously crushed;
4) mixing materials, in the step 3), the materials filtered by the filter screen 13 enter the mixing box 2 through the material receiving hopper 14, meanwhile, a mixed solution is added through the liquid inlet pipe 21, the driving motor b17 is started to drive the rotating shaft b16 to rotate, the rotating shaft b16 drives the stirring arm 18 to rotate to stir the materials, meanwhile, the scraper 38 synchronously rotates along with the rotating shaft b16 under the linkage action of the connecting plate 37, so that the scraper 38 scrapes off the materials adhered to the inner side wall of the mixing box 2, and the driving motor a6 and the driving motor b17 are stopped after the materials are mixed;
5) pouring and spraying, wherein after the material mixing in the step 4) is finished, the slurry pump 20 is started to pump out the material in the material mixing box 2 through the liquid inlet pipe 21, and the material enters the liquid distributing pipe 23 through the liquid outlet pipe 22 and is further sprayed out through the spray head 25;
6) leveling adjustment, in the pouring and spraying process in the step 5), people move the whole device by matching a push rod 32 with a universal wheel 30, level the material sprayed onto the working surface by a spray head 25 by using a leveling plate 29 to enable the surface of the material to be level, and adjust the thickness of the material on the working surface by driving the leveling plate 29 to move upwards or downwards by using the rotation of a threaded column 27.
Example two
Referring to fig. 1-7, on the basis of the first embodiment, the present invention provides another technical solution: the quantity of connecting plate 37 is two in mixing box 2, and two equal fixed connection of connecting plate 37 are at the surface of pivot b16, and two scrapers 38 are connected respectively to two connecting plates 37, utilize two connecting plates 37 to carry out the erection bracing to scraper 38 in step for scraper 38 is connected more stably with connecting plate 37, and then can be more stable when making scraper 38 follow pivot b16 and rotate.
The working principle and the using process of the invention are as follows: people open the cover plate to add materials into the feeding hopper 4 and then close the cover plate, the materials enter between the fixed roller 8 and the rotating roller 7 under the action of the annular guide plate 36, the driving motor a6 is started to drive the rotating shaft a5 to rotate, the rotating shaft a5 drives the rotating roller 7 to rotate, the materials can be crushed by utilizing the teeth a10 and the teeth b11 which are arranged on the rotating roller 7 and the fixed roller 8 in a staggered way, the distance between the teeth a10 and the teeth b11 on the same horizontal plane is sequentially reduced from top to bottom, so that the massive materials of the materials can be rapidly crushed under the action of gravity, the crushed materials fall into the receiving hopper 14 under the screening action of the filter screen 13 and then enter into the mixing box 2 through the receiving hopper 14, the mixed solution is added through the liquid inlet pipe 21, the driving motor b17 is started to drive the rotating shaft b16 to rotate, the rotating shaft b16 drives the mixing arm 18 to rotate to stir the materials, simultaneously, the scraper 38 synchronously rotates along with the rotating shaft b16 under the linkage action of the connecting plate 37, so that the scraper 38 scrapes off materials adhered to the inner side wall of the mixing box 2, after the materials are mixed, the driving motor a6 and the driving motor b17 are stopped, the slurry pump 20 is started to pump out the materials in the mixing box 2 through the liquid inlet pipe 21 and enter the liquid distribution pipe 23 through the liquid outlet pipe 22, the materials are sprayed out through the spray head 25, meanwhile, people move the whole device through the push rod 32 in cooperation with the universal wheel 30, the materials sprayed onto the working surface by the spray head 25 are flattened by using the flattening plate 29 to ensure that the surface of the materials is smooth, meanwhile, the flattening plate 29 is driven to move upwards or downwards by the rotation of the threaded column 27 to adjust the thickness of the materials on the working surface, and the bolt 9 is screwed down.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.