CN218589900U - Industrial waste liquid pretreatment device - Google Patents

Abstract

The utility model discloses an industrial waste liquid preprocessing device, including the supporting baseplate, the stock solution main part, the filter assembly is mixxed to heat preservation base and multidimension, the heat preservation base is fixed on the supporting baseplate, the stock solution main part is crouched horizontally and is fixed on the heat preservation base, multidimension is mixxed in the filter assembly locates the stock solution main part, multidimension is mixxed filter assembly and is included the fixing base, the rotating electrical machines, the rotation horizontal pole, rotatory mixxing filter assembly and removal rivers cutting assembly, the fixing base passes through the support column of bottom and fixes one end on the supporting baseplate, and the fixing base is located the one end of stock solution main part, rotating electrical machines fixed mounting is on the fixing base, it installs between the center of both ends in the stock solution main part to rotate the horizontal pole rotation, and rotate horizontal pole one end and stretch out the stock solution main part and fix at the rotating electrical machines output. The utility model belongs to the technical field of industrial waste liquid treatment, specifically be a preliminary treatment that can get rid of impurity, and can carry out the mixed industrial waste liquid preprocessing device of stirring of multidimension to the waste liquid.

Description

Industrial waste liquid pretreatment device

Technical Field

The utility model belongs to the technical field of industrial waste liquid treatment, especially, relate to an industrial waste liquid preprocessing device.

Background

The hazardous waste is classified into various forms, such as solid waste, semi-solid waste, slurry waste, liquid waste, barrel waste and the like, wherein the industrial waste liquid has wide sources and complex components, and the high-temperature incineration is a main means for harmless treatment of the waste liquid.

Liquid is useless to be sent to the storage tank district by transport tank car or collecting vessel, after carrying out similar compatible test to the useless sample of liquid, carry corresponding useless storage tank of liquid with various liquid useless through the pump of unloading in, however, a large amount of waste liquid sources are different, and liquid is useless takes place layering and separation inside the useless storage tank of liquid easily, and in addition, the liquid waste of collection often contains a certain amount of impurity, directly goes into the stove and burns, leads to the combustor to block up easily, consequently, still need carry out the preliminary treatment before the waste liquid goes into the stove and burns.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned condition, for overcoming prior art's defect, the utility model provides an industrial waste liquid preprocessing device can get rid of the preliminary treatment of impurity, and can carry out multidimension stirring to the waste liquid and mix, has solved the problem among the background art.

The utility model adopts the technical scheme as follows: an industrial waste liquid pretreatment device comprises a supporting base plate, a liquid storage main body, a heat preservation base and a multidimensional stirring and filtering assembly, wherein the heat preservation base is fixed on the supporting base plate, the liquid storage main body is horizontally fixed on the heat preservation base, the multidimensional stirring and filtering assembly is arranged in the liquid storage main body, the multidimensional stirring and filtering assembly comprises a fixed seat, a rotating motor, a rotating cross rod, a rotating stirring and filtering assembly and a movable water flow cutting assembly, the fixed seat is fixed at one end of the supporting base plate through a supporting column at the bottom, the fixed seat is located at one end of the liquid storage main body, the rotating motor is fixedly arranged on the fixed seat, the rotating cross rod is rotatably arranged between centers of two ends in the liquid storage main body, one end of the rotating cross rod extends out of the liquid storage main body and is fixed at the output end of the rotating motor, the rotating stirring and filtering assembly is arranged on the rotating cross rod and located in the liquid storage main body, and the movable water flow cutting assembly moves along a central axis of the liquid storage main body and is penetrated by the rotating cross rod;

the movable water flow cutting assembly comprises a movable cutting ring, a cutting column, a sliding connecting rod, a fixed upper plate, a supporting vertical rod, an adjusting ring, a sliding ring, a supporting stud and a limiting long rod, wherein the fixed side plate is fixedly assembled on the side wall of the liquid storage main body, the fixed side plate is symmetrically distributed, the fixed side plate is respectively arranged opposite to the fixed base, the supporting stud and the limiting long rod are respectively arranged on two sides of the outer part of the liquid storage main body, the supporting stud is rotatably arranged between one fixed side plate and the side wall of the fixed base, the limiting long rod is arranged between the fixed side plate on the other side and the side wall of the fixed base, the sliding ring is sleeved on the limiting long rod, the adjusting ring is sleeved on the supporting stud, the adjusting ring is in threaded connection with the supporting stud, the supporting vertical rod is respectively fixed on the adjusting ring and the side wall of the sliding ring and is arranged perpendicular to the supporting base plate, the fixed upper plate is fixed between the supporting vertical rods, the upper end of the side wall of the liquid storage body is provided with a moving groove along the direction of the central shaft, the middle of the bottom of the fixed upper plate is fixedly provided with a sliding connecting rod, the sliding connecting rod penetrates through the moving groove and extends into the liquid storage body, the bottom of the sliding connecting rod is fixedly assembled with a movable cutting ring, the movable cutting ring is coaxially arranged with the liquid storage body, the outer wall of the movable cutting ring is fixedly assembled with cutting columns along the radial direction, the cutting columns are annularly and alternately distributed, the supporting stud and the rotating cross rod synchronously rotate through a belt transmission assembly, the movable cutting ring carries the cutting columns to displace between one end of the liquid storage body close to the fixed seat and the fixed side plate along the direction of the central shaft of the liquid storage body, and the cutting waste liquid is horizontally pushed in the displacement process, so that the flowability of the waste liquid in the liquid storage body is improved, the waste liquid is evenly distributed by matching with the stirring component.

Further, rotatory stirring filter assembly includes stirring rod and filter screen, the filter chamber is separated into with stock solution main part internal cavity and is stirred the chamber to fixed curb plate position, just stir the chamber for the inside cavity part that is close to the fixing base of stock solution main part, the stirring rod is fixed on rotating the horizontal pole, the stirring intracavity is located to the stirring rod, puddler symmetry and interval distribution, filter screen fixes on rotating the horizontal pole and along the direction interval distribution of stock solution main part center pin at the filter chamber, just the inner wall of filter screen laminating stock solution main part rotates, and a plurality of filter screen carry out the preliminary treatment of multistage edulcoration to the waste liquid in the discharge stock solution main part.

It should be noted that the rotating stirring filter assembly and the movable water flow cutting assembly are driven by a rotating motor through the belt transmission assembly, so that a power device is saved, and the synchronous displacement cutting and stirring are performed to perform multi-dimensional stirring on waste liquid in the liquid storage main body.

Further, the upper end of stock solution main part sets up the upper cover, the lateral wall of the both ends looks stock solution main part of upper cover is buckled perpendicularly and is fixed on the lateral wall of stock solution main part, the upper cover is opened and is established the adjustment tank that corresponds with the shifting chute, fixed upper plate is located the top of upper cover, just sliding connection pole runs through the adjustment tank, and the upper cover plays certain protective effect to stock solution main part upper end.

Further, two relative inner wall fixed mounting silica gel fur poles of shifting chute, the shifting chute is sealed to silica gel fur pole, and the silica gel fur brush cross distribution that misplaces each other of shifting chute both sides carries out the closure of certain degree to the shifting chute, and the soft yielding of silica gel fur brush, sliding connection pole can push away the silica gel fur brush and remove under power drive's the situation, and the part that sliding connection pole passed through, silica gel fur brush possesses certain elasticity, can reset, continues to seal the part outside the inside sliding connection pole of shifting chute.

Further, the upper portion of the side wall of one end, close to the fixing seat, of the liquid storage main body is connected with a liquid inlet pipe, the lower portion of the side wall of the other end of the liquid storage main body is connected with a liquid discharge pipe, and the liquid discharge pipe can be connected with a diaphragm pump and a basket filter.

Furtherly, the cutting post is connected and is scraped the ring, scrape and remove the coaxial setting of ring and shift ring, scrape and remove the ring and rotate the laminating at the inner wall of stock solution main part, scrape the ring and can stir the chamber part to stock solution intracavity portion and scrape the wall and handle.

Further, the belt transmission assembly comprises a belt pulley and a transmission belt, the belt pulley is fixedly assembled on the rotary cross rod and the support stud respectively, two ends of the transmission belt are wound on the belt pulley respectively, and the rotary cross rod and the support stud synchronously rotate in a belt transmission mode.

Furthermore, the bottom of the support bottom plate is fixedly provided with a support leg.

After the structure is adopted, the utility model discloses beneficial effect as follows:

(1) Remove rivers cutting assembly's removal cutting ring, the center pin direction of cutting post along the stock solution main part is at the inside displacement of stock solution main part, carry out "cutting" to the inside waste liquid of stock solution main part, the cooperation of stirring through the rotation of rotating horizontal pole and stirring rod, the stirring that carries out the multidimension degree to the inside waste liquid of stock solution main part mixes, can realize the balanced feeding to the stock solution main part inside, prevent layering and separation stage from taking place, especially a large amount of liquid waste sources are different, need reach the inside material mixing of stock solution main part through the component of above-mentioned stirring and displacement "cutting".

(2) Through the filter screen who sets up, carry out flowing back and mix in the rotation, can get rid of the preliminary treatment of impurity to the waste liquid, slow down the pressure of later stage edulcoration, guarantee to get rid of the effect of impurity in the waste liquid, reduce the probability that the combustor blockked up because of waste liquid impurity.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of the overall structure of an industrial waste liquid pretreatment device provided by the present invention;

FIG. 2 is a schematic view of the internal structure of an industrial waste liquid pretreatment device provided by the present invention;

FIG. 3 is a semi-sectional view of an industrial waste liquid pretreatment device provided by the utility model;

FIG. 4 is a schematic diagram of the internal structure of a moving tank of the industrial waste liquid pretreatment device provided by the present invention;

fig. 5 is another angle schematic overall structure diagram of the industrial waste liquid pretreatment device provided by the utility model.

In the drawings: 1. supporting baseplate, 2, stock solution main part, 3, the heat preservation base, 4, multidimension stirring filtering component, 5, a fixed base, 6, rotating electrical machines, 7, the rotation horizontal pole, 8, rotatory stirring filtering component, 9, remove rivers cutting component, 10, remove the cutting ring, 11, the cutting post, 12, sliding connection pole, 13, fixed upper plate, 14, support the montant, 15, the adjustable ring, 16, the slip ring, 17, the support double-screw bolt, 18, spacing stock, 19, fixed curb plate, 20, the shifting chute, 21, the stirring pole, 22, filter screen, 23, the upper cover, 24, the adjustment tank, 25, the soft burr bar of silica gel, 26, feed liquor pipe, 27, the fluid-discharge tube, 28, strike off the ring, 29, the belt pulley, 30, driving belt, 31, the support column, 32, the supporting legs.

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 some embodiments of the present invention, not all embodiments; based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

As shown in fig. 1-5, an industrial waste liquid pretreatment device comprises a supporting base plate 1, a liquid storage main body 2, a heat preservation base 3 and a multidimensional stirring filter assembly 4, wherein the heat preservation base 3 is fixed on the supporting base plate 1, the liquid storage main body 2 is horizontally fixed on the heat preservation base 3, the multidimensional stirring filter assembly 4 is arranged in the liquid storage main body 2, the multidimensional stirring filter assembly 4 comprises a fixing seat 5, a rotating motor 6, a rotating cross rod 7, a rotating stirring filter assembly 8 and a movable water flow cutting assembly 9, the fixing seat 5 is fixed at one end of the supporting base plate 1 through a supporting column 31 at the bottom, the fixing seat 5 is located at one end of the liquid storage main body 2 and is fixedly arranged in an L shape, the rotating motor 6 is fixedly installed on the fixing seat 5, the rotating cross rod 7 is rotatably installed between centers of two ends in the liquid storage main body 2, one end of the rotating cross rod 7 extends out of the liquid storage main body 2 and is fixed at the output end of the rotating motor 6, the rotating stirring filter assembly 8 is located on the rotating cross rod 7 and is located inside the liquid storage main body 2, and the movable water flow cutting assembly 9 is moved along the central axis of the liquid storage main body 2 and is penetrated through by the rotating cross rod 7.

Supporting legs are fixedly assembled at four corners of the bottom of the supporting bottom plate 1, and the whole device is supported.

As a preferred embodiment of this application, refer to fig. 2, fig. 3 and fig. 5, removal rivers cutting assembly 9 includes removal cutting ring 10, cutting post 11, sliding connection pole 12, fixed upper plate 13, support montant 14, adjusting ring 15, slip ring 16, support stud 17 and spacing stock 18, the fixed assembly fixed side board 19 of lateral wall of stock solution main part 2, fixed side board 19 is fixed and is kept away from the two-thirds department of fixing base 5 position at 2 lateral walls of stock solution main part, it is required to describe that, fixed side board 19 place separates the filter chamber and stirs the chamber with the internal cavity of stock solution main part 2, just it is the inside cavity part that is close to fixing base 5 of stock solution main part to stir the chamber, fixed side board 19 symmetry distributes, just fixed side board 19 sets up with fixing base 5 respectively, support stud 17 and spacing stock 18 set up respectively in the outside both sides of stock solution main part 2, support stud 17 rotates and install between the lateral wall of a fixed side board 19 and fixing base 5, spacing stud 18 locates between the lateral wall of opposite side board 19 and fixing base 5, on 16, slip ring sets up on the sliding connection pole 15 on the fixed side board 12, the fixed side board 12 sets up the fixed mounting pole 12 and the fixed mounting pole 15, the fixed mounting pole 12 is fixed mounting pole 14, the fixed mounting pole 14 is fixed mounting pole 12 is fixed on the bottom plate, the slip mounting pole 12, the vertical mounting pole 14 is fixed mounting pole 14, the slip mounting pole 12 is fixed mounting pole, the vertical mounting pole 14 is fixed mounting pole 12 is fixed mounting pole, the vertical mounting pole 12 is fixed on the bottom board, the slip mounting pole 12, the vertical mounting pole 12 is fixed mounting pole 12 and the vertical mounting pole 14, remove cutting ring 10 and the coaxial setting of stock solution main part 2, the outer wall that removes cutting ring 10 is along radial fixed mounting cutting post 11, 11 annular interval distribution of cutting post, support stud 17 and rotate and carry out synchronous rotation through belt drive assembly between the horizontal pole 7, remove cutting ring 10 and carry cutting post 11 and carry out the displacement between stock solution main part 2 is close to the one end of fixing base 5 and fixed curb plate 19 along the center pin direction of stock solution main part 2, at the displacement in-process, the horizontal propulsion "cutting" waste liquid promotes the mobility of waste liquid in stock solution main part 2 inside, the subassembly of cooperation stirring, makes the waste liquid distribution balanced.

Wherein, cutting post 11 is connected and is scraped ring 28, scrape ring 28 and the coaxial setting of shift ring, scrape ring 28 and rotate the laminating at the inner wall of stock solution main part 2, scrape ring 28 and can scrape the wall processing to stock solution intracavity portion of stirring.

Further, two relative inner walls fixed mounting silica gel bristle bar 25 of shifting chute 20, silica gel bristle bar 25 seals shifting chute 20, the silica gel pappus brush cross distribution that misplaces each other of shifting chute 20 both sides, carry out the closure of certain degree to shifting chute 20, and the soft yielding of silica gel pappus brush, sliding connection pole 12 can push away the silica gel pappus brush and remove under power drive's the condition, and the part that sliding connection pole 12 passed through, silica gel pappus brush possesses certain elasticity, can reset, continue to seal the part outside the inside sliding connection pole 12 of shifting chute 20.

As a preferred embodiment of this application, refer to FIG. 2, rotatory stirring filter assembly 8 includes stirring rod 21 and filter screen 22, stirring rod 21 is fixed on rotating horizontal pole 7, stirring rod 21 is located and is stirred the intracavity, stirring rod symmetry and interval distribution, filter screen 22 is fixed on rotating horizontal pole 7 and is followed the direction interval distribution of stock solution main part 2 center pin at the filter chamber, just filter screen 22 laminates the inner wall of stock solution main part 2 and rotates, and a plurality of filter screen 22 carry out the preliminary treatment of multistage edulcoration to the waste liquid in the discharge stock solution main part 2.

It should be noted that the rotating stirring filter assembly 8 and the moving water stream cutting assembly 9 are driven by a rotating motor 6 through a belt transmission assembly, so that a power device is saved, and the waste liquid in the liquid storage body 2 is subjected to multidimensional stirring through synchronous displacement cutting and stirring.

Preferably, the upper end of the liquid storage main body 2 is provided with an upper cover 23, the two ends of the upper cover 23 are perpendicularly bent relative to the side wall of the liquid storage main body 2 and fixed on the side wall of the liquid storage main body 2, the upper cover 23 is provided with an adjusting groove 24 corresponding to the moving groove 20, the fixed upper plate 13 is positioned above the upper cover 23, the sliding connecting rod 12 penetrates through the adjusting groove 24, and the upper cover 23 has a certain protection effect on the upper end of the liquid storage main body 2.

Preferably, the upper portion that stock solution main part 2 is close to the one end lateral wall of fixing base 5 is connected with feed liquor pipe 26, the sub-unit connection of the other end lateral wall of stock solution main part 2 has fluid-discharge tube 27, and the diaphragm pump can be connected to fluid-discharge tube 27 to and basket filter filters the edulcoration through filter screen 22 to the waste liquid, and the cooperation basket filter improves the effect that impurity was got rid of.

Preferably, the belt transmission assembly comprises a belt pulley 29 and a transmission belt 30, the belt pulley 29 is fixedly assembled on the rotating cross rod 7 and the support stud 17 respectively, two ends of the transmission belt 30 are wound on the belt pulley 29 respectively, and the rotating cross rod 7 and the support stud 17 synchronously rotate in a belt transmission mode.

When in specific use, waste liquid from different sources is conveyed into the liquid storage main body 2 through the liquid inlet pipe 26; starting the rotating motor 6, rotating the output end of the rotating motor 6 to drive the rotating cross rod 7 to rotate, and synchronously rotating the stirring rod 21 and the filter screen 22 along with the stirring rod 21 to stir the waste liquid in the liquid storage main body 2;

when the rotating cross rod 7 rotates, the belt pulley 29 on the rotating cross rod 7 rotates, the supporting stud 17 which is in belt transmission with the rotating cross rod 7 rotates between the fixed side plate 19 and the vertical plate of the L-shaped fixed seat 5, when the supporting stud 17 rotates, the adjusting ring 15 moves along the central shaft direction of the supporting stud 17, the supporting vertical rod 14 and the fixed upper plate 13 move synchronously with the adjusting ring 15, and the sliding ring 16 and the long sliding rod ensure the moving stability of the fixed upper plate 13 while limiting;

when the fixed upper plate 13 moves, the fixed upper plate carries the sliding connecting rod 12 to slide along the moving groove 20, the movable cutting ring 10 at the bottom of the sliding connecting rod 12 synchronously moves in the liquid storage main body 2 along with the sliding connecting rod 12, the cutting column 11 synchronously moves along with the movable cutting ring 10 to cut waste liquid in the liquid storage main body 2, and the stirring rod 21 is matched to carry out multidirectional stirring and mixing on the waste liquid;

when needing flowing back, the inside filter screen 22 of stock solution main part 2 carries out edulcoration filtration preliminary treatment to the discharged waste liquid, and the fluid-discharge tube 27 is connected the diaphragm pump to spray and get into the rotary kiln and burn the processing after the further filtration edulcoration of blue filter.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims (8)

1. The utility model provides an industrial waste liquid preprocessing device which characterized in that: the multi-dimensional stirring filter assembly comprises a fixing seat, a rotating motor, a rotating cross rod, a rotating stirring filter assembly and a movable water flow cutting assembly, wherein the fixing seat is fixed at one end of the supporting base plate through a supporting column at the bottom, the fixing seat is positioned at one end of the liquid storage body, the rotating motor is fixedly arranged on the fixing seat, the rotating cross rod is rotatably arranged between the centers of the two ends in the liquid storage body, one end of the rotating cross rod extends out of the liquid storage body and is fixed at the output end of the rotating motor, the rotating stirring filter assembly is arranged on the rotating cross rod and is positioned in the liquid storage body, and the movable water flow cutting assembly moves along the central shaft of the liquid storage body and is penetrated through by the rotating cross rod;

the movable water flow cutting assembly comprises a movable cutting ring, a cutting column, a sliding connecting rod, a fixed upper plate, a support vertical rod, an adjusting ring, a sliding ring, a support stud and a limit long rod, wherein the fixed side plate is fixedly assembled on the side wall of the liquid storage main body, the fixed side plate is symmetrically distributed and is arranged opposite to the fixed side plate respectively, the support stud and the limit long rod are arranged on two sides of the outside of the liquid storage main body respectively, the support stud is rotatably installed between the side walls of the fixed side plate and the fixed base, the limit long rod is arranged between the side walls of the fixed side plate and the fixed base, the sliding ring is sleeved on the limit long rod, the adjusting ring is sleeved on the support stud and is in threaded connection with the support stud, the support vertical rod is fixedly arranged on the side walls of the adjusting ring and the sliding ring respectively and is perpendicular to a support bottom plate, the fixed upper plate is fixed between the support vertical rod, a movable groove is arranged at the upper end of the side wall of the liquid storage main body along the direction of a central shaft, the fixed upper plate is fixedly installed on the sliding connecting rod, the sliding connecting rod penetrates through the movable groove and extends into the movable groove, the movable cutting column is coaxially arranged between the outer wall of the cutting ring and the outer wall of the fixed cutting column, and the movable cutting column is synchronously distributed along the rotary rod.

2. The industrial waste liquid pretreatment device according to claim 1, characterized in that: rotatory stirring filter assembly includes stirring rod and filter screen cloth, filter chamber and stirring chamber are separated into with stock solution main part internal cavity to fixed curb plate position, just the stirring chamber is the inside cavity part that is close to the fixing base of stock solution main part, the stirring rod is fixed on rotating the horizontal pole, the stirring intracavity is located to the stirring rod, stirring rod symmetry and interval distribution, filter screen cloth is fixed on rotating the horizontal pole and along the direction interval distribution of stock solution main part center pin at the filter chamber, just filter screen cloth laminating stock solution main part's inner wall rotates.

3. The industrial waste liquid pretreatment device according to claim 1, characterized in that: the upper end of stock solution main part sets up the upper cover, the lateral wall of the both ends looks stock solution main part of upper cover is buckled perpendicularly and is fixed on the lateral wall of stock solution main part, the upper cover is opened and is established the adjustment tank that corresponds with the shifting chute, fixed upper plate is located the top of upper cover, just sliding connection pole runs through the adjustment tank.

4. The industrial waste liquid pretreatment device according to claim 1, characterized in that: two relative inner walls of moving groove are fixed with the soft hair pole of silica gel, the soft hair pole of silica gel seals the moving groove.

5. The industrial waste liquid pretreatment device according to claim 1, characterized in that: the upper portion of the side wall of one end, close to the fixing seat, of the liquid storage main body is connected with a liquid inlet pipe, and the lower portion of the side wall of the other end of the liquid storage main body is connected with a liquid discharge pipe.

6. The industrial waste liquid pretreatment device according to claim 1, characterized in that: the cutting post is connected and is scraped the ring, scrape ring and the coaxial setting of shift ring, scrape the ring rotation laminating at the inner wall of stock solution main part.

7. The industrial waste liquid pretreatment device according to claim 1, characterized in that: the belt transmission assembly comprises a belt pulley and a transmission belt, the belt pulley is fixedly assembled on the rotary cross rod and the support stud respectively, and two ends of the transmission belt are wound on the belt pulley respectively.

8. The industrial waste liquid pretreatment device according to claim 1, characterized in that: supporting legs are fixedly assembled at four corners of the bottom of the supporting bottom plate.

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