CN111873249A

CN111873249A - Sorting unit is smashed to junked tire

Info

Publication number: CN111873249A
Application number: CN202010617648.9A
Authority: CN
Inventors: 李国友
Original assignee: Anhui Zhonghong Rubber And Plastic Co ltd
Current assignee: Anhui Zhonghong Rubber And Plastic Co ltd
Priority date: 2020-07-01
Filing date: 2020-07-01
Publication date: 2020-11-03

Abstract

The invention discloses a waste tire crushing and sorting device, and relates to the technical field of waste tire crushing and sorting; the problem of poor separation of steel wires and rubber is solved; specifically including granulation case, guide box, crushing case and mount, one side outer wall of mount is provided with conveying mechanism, and the top outer wall of crushing case is opened there is the feed inlet, the inside of crushing case is provided with rubbing crusher and constructs, the bottom outer wall of crushing case is opened there is the through-hole, the top outer wall of guide box is connected with the bottom outer wall of crushing case through the bolt, open one side outer wall of guide box has the guide opening, it is provided with the slope guide plate to be close to guide opening one side inner wall to smash the case, granulation case and guide box are connected through two baffles, the relative one side outer wall welding of two baffles has same baffle, the top outer wall of granulation case is provided with the second motor. The invention effectively promotes the separation of rubber and steel wires and overcomes the defect of using iron cores to adsorb and separate the steel wires.

Description

Sorting unit is smashed to junked tire

Technical Field

The invention relates to the technical field of waste tire crushing and sorting, in particular to a waste tire crushing and sorting device.

Background

With the development of the automobile industry and the transportation industry and the formation of highway networks in China, the automobile transportation industry has a tendency of high speed, and the quantity of automobile waste tires is greatly increased, so that the waste tires are recycled, which is a technology that needs to be mastered urgently in modern society, and the waste tires need to be crushed and recycled before being recycled.

Through the retrieval, chinese patent application number is CN 201921159218.6's patent, discloses a junked tire smashes sorting unit, including base, crushing storehouse, motor, conveyer belt, iron core and collecting box, the top left and right sides wall symmetry of base is provided with two bracing pieces, through being provided with a plurality of iron cores between two risers, the wraparound has electrically conductive group on the iron core, when circular telegram to electrically conductive group, forms the electro-magnet after the iron core is electrically conductive. The crushing and sorting device for the waste tires in the patent has the following defects: adsorb through the iron core to the steel wire after smashing and select separately, this kind of mode in the actual operation process, the steel wire can be adulterated in rubber, and can drive rubber and be adsorbed together when the iron core adsorbs the steel wire, leads to from this to select separately the effect poor.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a waste tire crushing and sorting device.

In order to achieve the purpose, the invention adopts the following technical scheme:

a waste tire crushing and sorting device comprises a granulation box, a material guide box, a crushing box and a fixing frame, wherein a conveying mechanism is arranged on the outer wall of one side of the fixing frame, a feed inlet is formed in the outer wall of the top of the crushing box, a crushing mechanism is arranged inside the crushing box, a through hole is formed in the outer wall of the bottom of the crushing box, the outer wall of the top of the material guide box is connected with the outer wall of the bottom of the crushing box through a bolt, a material guide opening is formed in the outer wall of one side of the material guide box, an inclined guide plate is arranged on the inner wall of one side, close to the material guide opening, of the crushing box, the granulation box and the material guide box are connected through two partition plates, the same guide plate is welded on the outer wall of one side opposite to the two partition plates, a second motor is arranged on the outer wall of the top of the granulation box, the second motor output shaft is connected with the top of threaded rod through the shaft coupling, one side inner wall of granulation case is opened there are two spouts, and the inner wall of two spouts all is provided with same stripper plate, one side outer wall welding of stripper plate has two sliders, on the stripper plate cup jointed the circumference outer wall of threaded rod, stripper plate bottom outer wall welding has the mounting panel, the granulation groove that has the equidistance and distributes is opened to the bottom outer wall of mounting panel, and stripper plate bottom outer wall welding has the cutter of arranging with granulation groove intermittent type.

Preferably: two pairs of conical blocks are welded on the inner wall of each granulation groove, and an elastic bulge is welded on the inner wall of the top end of each granulation groove.

Further: conveying mechanism includes two fixed plates, conveyer belt, first motor and first belt, and two fixed plates set up on the top both sides outer wall of mount, and the relative one side outer wall in two fixed plate both ends all is fixed with the driving roller through the bearing.

On the basis of the scheme: the conveyer belt both ends cup joint respectively on the circumference of two driving rollers, and one side of first motor is fixed in on one side outer wall of mount through the extension board, and first motor output shaft is provided with the pivot, and the pivot runs through in the one end of extension board.

The better scheme in the scheme is as follows: the belt pulleys are sleeved at one end of the rotating shaft and one end of the driving roller respectively, and the two ends of the first belt are sleeved on the circumferences of the two belt pulleys respectively.

As a further scheme of the invention: the crushing mechanism comprises two first crushing rollers, two second crushing rollers, two gears, a third motor and two second belts, the third motor is fixed on the outer wall of the back face of the crushing box through a support plate, and the two first crushing rollers and the two second crushing rollers are fixed on the inner wall of the front face and the back face of the crushing box through bearings respectively.

Simultaneously, two the second belt cup joints respectively in every first crushing roller and the one end that the second crushing roller leans on the crushing case back, and two gears cup joint respectively in the one end that two second crushing rollers are close to crushing case.

As a preferable aspect of the present invention: two gear intermeshing, the output shaft of third motor is connected with the one end of one of them second crushing roller through the shaft coupling, and the crushing case is close to the opposite one side inner wall welding of through-hole both sides has the stock guide.

And simultaneously, one side outer wall of crushing case is provided with the water tank, and one side outer wall that crushing case is close to the water tank is provided with the water pump, and the input port of water pump is connected with one side outer wall of water tank through the connecting pipe, and the top four corners outer wall of crushing case all is fixed with rectangular pipe through the support ring.

As a more preferable scheme of the invention: the water pump is characterized in that a water pipe is arranged at the output port of the water pump, one end of the water pipe is connected with one side of the rectangular guide pipe through threads, and spray heads distributed at equal intervals are arranged on the outer wall of the opposite side of the rectangular guide pipe.

The invention has the beneficial effects that:

1. this sorting unit is smashed to junked tire, through starting the second motor, the second motor drives the threaded rod rotatory, rotatory threaded rod has driven two sliders of stripper plate one side and has slided in the spout, thereby the stripper plate has been promoted and the tire after smashing is extruded, and the bottom of stripper plate is provided with cutter and granulation groove, the separation of rubber and steel wire has effectively been promoted, the drawback of using the iron core to adsorb the steel wire and select separately has been overcome, the sorting efficiency and the quality of integrated device to rubber and steel wire have been improved greatly.

2. This sorting unit is smashed to junked tire when rubber is extruded in the granulation groove, can extrude the elastic bulge, and when the granulation groove rises along with the stripper plate, the protruding cause of elasticity that the extrusion warp resumes former shape and launches out the groove with the rubber in granulation groove to effectively avoided being extrudeed into the problem that the rubber block in the granulation groove was stopped up, every pair of conical block has effectively played supplementary elastic bulge's resilience effect simultaneously.

3. This sorting unit is smashed to junked tire, through starting the third motor, the third motor drives one of them second and smashes the roller rotatory, and simultaneously through two gear intermeshing's mode, it is rotatory to have driven another second and smashes the roller, and the second belt has all been cup jointed to the one end of every first crushing roller and second crushing roller, therefore, it can rotate to relative direction simultaneously to have promoted every first crushing roller and second crushing roller, and two first crushing rollers and two second crushing roller axle centers department form trapezoidal form, when junked tire drops on it, two first crushing rollers can effectively guarantee junked tire and transfer trapezoidal center, traditional crushing roller has been overcome when smashing junked tire, the slow kibbling problem of tire that appears, and then junked tire's crushing efficiency and quality have been improved.

4. This sorting unit is smashed to junked tire through starting the water pump, and the water pump is taken the water in the water tank out to in leading-in rectangular pipe through connecting pipe and water pipe, again by in the leading-in a plurality of shower nozzles of rectangular pipe, through shower nozzle spun water, the dust that junked tire collapsed when can effectively be to junked tire surface and smashing adsorbs, thereby has effectively guaranteed the cleanliness when junked tire smashes, improves the kibbling validity of junked tire.

Drawings

Fig. 1 is a schematic structural view of a waste tire crushing and sorting device according to the present invention;

fig. 2 is a schematic diagram of the internal structure of a waste tire crushing and sorting device provided by the invention;

fig. 3 is a schematic structural view of the back of a waste tire crushing and sorting device according to the present invention;

FIG. 4 is a schematic bottom view of the pressing plate of the waste tire crushing and sorting device according to the present invention;

fig. 5 is a schematic sectional structure diagram of a granulation tank in the scrap tire crushing and sorting device according to the present invention.

In the figure: 1-baffle plate, 2-material conveying plate, 3-granulation box, 4-material guide box, 5-crushing box, 6-fixing frame, 7-fixing plate, 8-conveying belt, 9-first motor, 10-rectangular guide pipe, 11-material inlet, 12-water pipe, 13-spray head, 14-second motor, 15-water tank, 16-extrusion plate, 17-threaded rod, 18-partition plate, 19-inclined guide plate, 20-material guide plate, 21-first belt, 22-first crushing roller, 23-second crushing roller, 24-gear, 25-third motor, 26-water pump, 27-second belt, 28-cutter, 29-slide block, 30-granulation groove, 31-mounting plate, 32-conical block, 33-elastic bumps.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

A junked tire crushing and sorting device is shown in figures 1-5 and comprises a granulation box 3, a material guiding box 4, a crushing box 5 and a fixing frame 6, wherein a conveying mechanism is arranged on the outer wall of one side of the fixing frame 6, a material inlet 11 is formed in the outer wall of the top of the crushing box 5, the crushing mechanism is arranged inside the crushing box 5, a through hole is formed in the outer wall of the bottom of the crushing box 5, the outer wall of the top of the material guiding box 4 is connected with the outer wall of the bottom of the crushing box 5 through a bolt, a material guiding opening is formed in the outer wall of one side of the material guiding box 4, an inclined guide plate 19 is connected to the inner wall of one side of the crushing box 5 close to the material guiding opening through a bolt, the granulation box 3 is connected with the material guiding box 4 through two partition plates 18, the same guide plate is welded to the outer wall of the opposite side of the two partition plates 18, a second motor, the outer wall of the front of the granulation box 3 is fixed with a baffle 1 through bolts, the outer wall of one side of the front of the baffle 1 is provided with a discharge port, the inner walls of two sides of the discharge port are both connected with a material conveying plate 2 through hinges, an output shaft of a second motor 14 is connected with the top end of a threaded rod 17 through a coupler, the inner wall of one side of the granulation box 3 is provided with two sliding grooves, the inner walls of the two sliding grooves are both connected with a same extrusion plate 16 in a sliding manner, the outer wall of one side of the extrusion plate 16 is welded with two sliding blocks 29, the extrusion plate 16 is sleeved on the circumferential outer wall of the threaded rod 17, the outer wall of the bottom of the extrusion plate 16 is welded with a mounting plate 31, the outer wall of the bottom; during the use, put junked tire on conveying mechanism, carry to the feed inlet 11 department of smashing case 5 through conveying mechanism, at this moment, start rubbing crusher and construct, smash junked tire, the leading-in granulation case 3 of smashed tire is through slope guide plate 19 and baffle, start second motor 14 simultaneously, second motor 14 drives threaded rod 17 rotatory, rotatory threaded rod 17 has driven two sliders 29 of stripper plate 16 one side to slide in the spout, thereby the stripper plate 16 has been promoted to extrude the tire after smashing, and the bottom of stripper plate 16 is provided with cutter 28 and granulation groove 30, the separation of rubber and steel wire has effectively been promoted, the drawback that the iron core carries out absorption separation to the steel wire has been overcome, the sorting efficiency and the quality of integrated device to rubber and steel wire have been improved greatly.

In order to effectively avoid the problem of blocking the rubber blocks extruded into the granulation tank 30; as shown in fig. 5, two pairs of tapered blocks 32 are welded on the inner wall of each granulation groove 30, an elastic protrusion 33 is welded on the inner wall of the top end of each granulation groove 30, and the elastic protrusion 33 is made of beryllium copper; when the rubber is extruded into the granulation tank 30, the elastic protrusions 33 are extruded, and when the granulation tank 30 rises along with the extrusion plate 16, the extruded and deformed elastic protrusions 33 eject the rubber of the granulation tank 30 out of the tank due to the recovery of the original shape, so that the problem of blocking of rubber blocks extruded into the granulation tank 30 is effectively avoided, and meanwhile, each pair of conical blocks 32 effectively play a role in assisting the resilience of the elastic protrusions 33.

To facilitate smooth transportation of used tires; as shown in fig. 1-2, the conveying mechanism includes two fixing plates 7, a conveyor belt 8, a first motor 9 and a first belt 21, the two fixing plates 7 are fixed on outer walls of two sides of the top of the fixing frame 6 through bolts, the outer walls of opposite sides of two ends of the two fixing plates 7 are fixed with drive rollers through bearings, two ends of the conveyor belt 8 are respectively sleeved on the circumferences of the two drive rollers, one side of the first motor 9 is fixed on the outer wall of one side of the fixing frame 6 through a support plate, an output shaft of the first motor 9 is connected with a rotating shaft through threads, the rotating shaft penetrates through one end of the support plate, the rotating shaft and one end of one of the drive rollers are respectively sleeved with a belt pulley, and two ends of the first belt 21 are respectively sleeved on; during the use, start first motor 9, first motor 9 drives the epaxial belt pulley rotation of commentaries on classics to it is rotatory to have driven one of them driving roller through first belt 21, and at this moment under the effect of rotatory driving roller, conveyer belt 8 begins work, puts junked tire on conveyer belt 8, has effectively promoted junked tire's steady transportation.

In order to effectively improve the crushing efficiency and quality of waste tires; as shown in fig. 1-3, the pulverizing mechanism includes two first pulverizing rollers 22, two second pulverizing rollers 23, two gears 24, a third motor 25 and two second belts 27, the third motor 25 is fixed on the outer wall of the back of the pulverizing box 5 through a support plate, the two first pulverizing rollers 22 and the two second pulverizing rollers 23 are fixed on the inner walls of the front and the back of the pulverizing box 5 through bearings, the two second belts 27 are respectively sleeved on one end of each of the first pulverizing rollers 22 and the end of each of the second pulverizing rollers 23 close to the back of the pulverizing box 5, the two gears 24 are respectively sleeved on one end of each of the two second pulverizing rollers 23 close to the pulverizing box 5, the two gears 24 are engaged with each other, an output shaft of the third motor 25 is connected with one end of one of the second pulverizing rollers 23 through a coupler, and the inner walls 20 are welded on the opposite side of the pulverizing box 5 close to both sides of the through hole; when the waste tire crusher is used, the third motor 25 is started, the third motor 25 drives one of the second crushing rollers 23 to rotate, and meanwhile, the other second crushing roller 23 is driven to rotate in a mode that the two gears 24 are meshed with each other, the second belt 27 is sleeved at one end of each of the first crushing rollers 22 and one end of each of the second crushing rollers 23, therefore, the fact that each of the first crushing rollers 22 and each of the second crushing rollers 23 can rotate towards opposite directions is promoted, the axle centers of the two first crushing rollers 22 and the two second crushing rollers 23 form a ladder shape, when a waste tire falls onto the two first crushing rollers 22, the problem that the waste tire is slowly crushed when the conventional crushing rollers crush the waste tire is solved, and the crushing efficiency and the crushing quality of the waste tire are further improved.

In order to promote the dust removal effect when the waste tires are crushed; as shown in fig. 1-3, a water tank 15 is fixed on the outer wall of one side of the crushing tank 5 through bolts, a water pump 26 is fixed on the outer wall of one side of the crushing tank 5 close to the water tank 15 through a support, an input port of the water pump 26 is connected with the outer wall of one side of the water tank 15 through a connecting pipe, rectangular guide pipes 10 are fixed on the outer walls of four corners of the top of the crushing tank 5 through support rings, an output port of the water pump 26 is connected with a water pipe 12 through threads, one end of the water pipe 12 is connected with one side of the rectangular guide pipe 10 through threads, and spray heads 13 distributed equidistantly are connected on the outer wall of the; during the use, through starting water pump 26, water in water tank 15 is taken out to water pump 26 to in leading-in rectangular pipe 10 through connecting pipe and water pipe 12, again by in leading-in a plurality of shower nozzles 13 of rectangular pipe 10, through shower nozzle 13 spun water, can effectively adsorb the dust that junked tire collapsed when junked tire surface and crushing, thereby effectively guaranteed the cleanliness when junked tire smashes, improved junked tire kibbling validity.

In the embodiment, when the first motor 9 is started, the first motor 9 drives the belt pulley on the rotating shaft to rotate, and drives one of the transmission rollers to rotate through the first belt 21, at this time, under the action of the rotating transmission roller, the transmission belt 8 starts to work, waste tires are placed on the transmission belt 8, the waste tires are slowly conveyed to one end of the transmission belt 8 and then fall into the crushing box 5, the third motor 25 is started, the third motor 25 drives one of the second crushing rollers 23 to rotate, and simultaneously, the other second crushing roller 23 is driven to rotate through the mutual meshing manner of the two gears 24, and one end of each of the first crushing roller 22 and the second crushing roller 23 is sleeved with the second belt 27, so that the first crushing roller 22 and the second crushing roller 23 can simultaneously rotate in opposite directions, and the axle centers of the two first crushing rollers 22 and the two second crushing rollers 23 form a ladder shape, when the junked tires fall on the grinding device, the two first grinding rollers 22 can effectively ensure that the junked tires are turned into the center of a trapezoid and are ground by the two second grinding rollers 23, during the period, the water pump 26 is started, the water pump 26 pumps out the water in the water tank 15, the water is guided into the rectangular conduit 10 through the connecting pipe and the water pipe 12 and then is guided into the plurality of spray heads 13 through the rectangular conduit 10, the water sprayed by the spray heads 13 can effectively adsorb the surfaces of the junked tires and dust generated by the junked tires during grinding, next, the ground tires are guided into the granulation box 3 through the inclined guide plate 19 and the guide plate, the second motor 14 is started, the second motor 14 drives the threaded rod 17 to rotate, the rotating threaded rod 17 drives the two sliding blocks 29 on one side of the extrusion plate 16 to slide in the sliding grooves, so that the extrusion plate 16 is promoted to extrude the ground tires, and the bottom of the extrusion plate 16 is provided with the cutter 28 and the granulation groove 30, effectively promoting the separation of the rubber and the steel wire.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The waste tire crushing and sorting device comprises a granulation box (3), a material guide box (4), a crushing box (5) and a fixing frame (6), and is characterized in that a conveying mechanism is arranged on the outer wall of one side of the fixing frame (6), a feed inlet (11) is formed in the outer wall of the top of the crushing box (5), a crushing mechanism is arranged inside the crushing box (5), a through hole is formed in the outer wall of the bottom of the crushing box (5), the outer wall of the top of the material guide box (4) is connected with the outer wall of the bottom of the crushing box (5) through bolts, a material guide hole is formed in the outer wall of one side of the material guide box (4), an inclined guide plate (19) is arranged on the inner wall of one side, close to the material guide hole, of the crushing box (5), the granulation box (3) and the material guide box (4) are connected through two partition plates (18), the same guide plate is welded on the outer wall of one, the inner walls of the top and the bottom of the granulation box (3) are respectively provided with the same threaded rod (17), the outer wall of the front surface of the granulation box (3) is provided with a baffle (1), a discharge hole is arranged on the outer wall of one side of the front surface of the baffle plate (1), material conveying plates (2) are arranged on the inner walls of the two sides of the discharge hole, an output shaft of a second motor (14) is connected with the top end of a threaded rod (17) through a coupler, two sliding grooves are arranged on the inner wall of one side of the granulation box (3), and the inner walls of the two chutes are provided with the same extrusion plate (16), the outer wall of one side of the extrusion plate (16) is welded with two sliding blocks (29), the extrusion plate (16) is sleeved on the circumferential outer wall of the threaded rod (17), the outer wall of the bottom of the extrusion plate (16) is welded with a mounting plate (31), the outer wall of the bottom of the mounting plate (31) is provided with granulation grooves (30) which are distributed at equal intervals, and the outer wall of the bottom of the extrusion plate (16) is welded with a cutter (28) which is arranged intermittently with the granulation groove (30).

2. The junked tire crushing and sorting device as claimed in claim 1, wherein two pairs of conical blocks (32) are welded to the inner wall of each granulating tank (30), and elastic protrusions (33) are welded to the inner wall of the top end of each granulating tank (30).

3. The scrap tire smashing and sorting device according to claim 1, wherein the conveying mechanism comprises two fixing plates (7), a conveying belt (8), a first motor (9) and a first belt (21), the two fixing plates (7) are arranged on outer walls of two sides of the top of the fixing frame (6), and driving rollers are fixed on the outer walls of two opposite sides of two ends of each fixing plate (7) through bearings.

4. The scrap tire crushing and sorting device according to claim 3, wherein two ends of the conveyor belt (8) are respectively sleeved on the circumferences of the two driving rollers, one side of the first motor (9) is fixed on the outer wall of one side of the fixed frame (6) through a support plate, and an output shaft of the first motor (9) is provided with a rotating shaft which penetrates through one end of the support plate.

5. The scrap tire crushing and sorting device according to claim 4, wherein the rotating shaft and one end of one of the driving rollers are respectively sleeved with a belt pulley, and two ends of the first belt (21) are respectively sleeved on the circumferences of the two belt pulleys.

6. The scrap tire crushing and sorting device according to claim 1, wherein the crushing mechanism comprises two first crushing rollers (22), two second crushing rollers (23), two gears (24), a third motor (25) and two second belts (27), the third motor (25) is fixed on the outer wall of the back surface of the crushing box (5) through a support plate, and the two first crushing rollers (22) and the two second crushing rollers (23) are respectively fixed on the inner wall of the front surface and the inner wall of the back surface of the crushing box (5) through bearings.

7. The scrap tire crushing and sorting device according to claim 6, wherein the two second belts (27) are respectively sleeved on one end of each of the first crushing roller (22) and the second crushing roller (23) close to the back of the crushing box (5), and the two gears (24) are respectively sleeved on one end of each of the two second crushing rollers (23) close to the crushing box (5).

8. The junked tire crushing and sorting device as claimed in claim 6, wherein the two gears (24) are engaged with each other, the output shaft of the third motor (25) is connected with one end of one of the second crushing rollers (23) through a coupling, and the material guide plate (20) is welded to the inner wall of the opposite side of the crushing box (5) close to the two sides of the through hole.

9. The scrap tire crushing and sorting device according to claim 1, wherein a water tank (15) is arranged on the outer wall of one side of the crushing box (5), a water pump (26) is arranged on the outer wall of one side of the crushing box (5) close to the water tank (15), an input port of the water pump (26) is connected with the outer wall of one side of the water tank (15) through a connecting pipe, and rectangular guide pipes (10) are fixed on the outer walls of four corners of the top of the crushing box (5) through support rings.

10. The scrap tire crushing and sorting device according to claim 9, wherein the water pipe (12) is arranged at the output port of the water pump (26), one end of the water pipe (12) is connected with one side of the rectangular guide pipe (10) through threads, and the spray heads (13) are arranged on the outer wall of the opposite side of the rectangular guide pipe (10) and are distributed at equal intervals.