CN213192846U - Sedimentation tank of mine cinder water - Google Patents

Abstract

The utility model discloses a sedimentation tank of mine cinder water, including rose box and drainage mechanism, the rose box includes box, first filter mechanism, second filter mechanism and third filter mechanism, and first filter mechanism includes first bottom plate and sets up the first filter element on first bottom plate, and second filter mechanism includes the second bottom plate and sets up the first filter element on the second bottom plate, and third filter mechanism includes the third bottom plate and sets up the first filter element on the third bottom plate, the bottom of box sets up the slope part, drainage mechanism includes drain box and flowing back pump, the slope part includes the hang plate. The utility model relates to a rationally, sediment water quickly separating adapts to the operation demand that the anti-reflection operation of water conservancy is high sediment volume, high water yield effectively.

Description

Sedimentation tank of mine cinder water

Technical Field

The utility model belongs to the technical field of mining equipment, especially, relate to a sedimentation tank of mine cinder water.

Background

The drilling extraction is a fundamental means for coal mine gas control, the coal seam in China is generally poor in air permeability, the pressure relief range of a common pre-extraction drill hole is limited, and the effect is not ideal. The hydraulic permeability-increasing operation means that high-pressure water jet is utilized to cut around a coal seam drill hole in the drill hole to form a slot or a cavity, so that the deformation space and the pressure relief range of a coal body are enlarged, more fracture networks are generated, and the air permeability and the pre-pumping effect of the coal seam are improved. Compared with the conventional pre-pumping drilling hole, the water consumption of the hydraulic anti-reflection pre-pumping drilling hole can be increased by ten times or hundred times in the construction process, and the cut coal cinder and water are mixed together and discharged from the drilling hole. A large amount of cinder water can be pumped and discharged into a mine sewage pipeline through a drainage pump after cinder is removed through precipitation, otherwise, the drainage pump can be damaged.

The existing mine sewage sedimentation tank for mixing and settling coal slag and water has two types, namely a pit type and a box type. The pit type is that a cubic pit is dug out manually on the bottom plate of the roadway to be used as a sedimentation tank. The box body is a cube or a cylinder which is manually processed. Both structures are simple, the discharged slag water needs to be slowly precipitated out of coal slag by means of gravity to perform drainage work, long-time continuous operation cannot be performed, and the efficiency is low. The deposited coal slag needs to be shoveled out by a shovel manually, the cleaning is not thorough, and the labor load is large.

Therefore, a sedimentation tank for mine coal slag water is lacked at present, the slag water is quickly separated, and the operation requirements of high slag yield and high water yield in hydraulic permeability-increasing operation are effectively met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that not enough among the above-mentioned prior art is directed at, provide a sedimentation tank of mine cinder water, its reasonable in design and with low costs realizes the sediment water quickly separating, adapts to the operation demand that the anti-reflection operation of water conservancy effectively exceeds sediment volume, high water yield, and can used repeatedly, is applicable to the colliery and drills and is under construction fast.

In order to solve the technical problem, the utility model discloses a technical scheme is: a sedimentation tank of mine cinder water which characterized in that: the filter box comprises a box body, and a first filtering mechanism, a second filtering mechanism and a third filtering mechanism which are arranged in the box body and are sequentially distributed from top to bottom, wherein the bottom of the box body is provided with an inclined component;

the first filtering mechanism comprises a first bottom plate and a first filtering component arranged on the first bottom plate, the second filtering mechanism comprises a second bottom plate and a second filtering component arranged on the second bottom plate, the third filtering mechanism comprises a third bottom plate and a third filtering component arranged on the third bottom plate, and the aperture of filtering holes in the first filtering component, the aperture of filtering holes in the second filtering component and the aperture of filtering holes in the third filtering component are gradually reduced;

the drainage mechanism comprises a drainage box and a drainage pump arranged in the drainage box, a liquid suction pipe of the drainage pump is positioned in the drainage box, and a drainage pipe of the drainage pump extends out of the drainage box;

the inclined component comprises an inclined plate arranged at the bottom of the box body, the end part, far away from the drainage box, of the inclined plate is higher than the end part, close to the drainage box, of the inclined plate, the lower end, close to the inclined plate, of the box body is provided with a liquid outlet, and the drainage box is communicated with the liquid outlet of the box body.

The sedimentation tank for the mine coal slag water is characterized in that: the first filtering part comprises a first filtering net, a first front side plate, a first left side plate, a first back side plate and a first right side plate, wherein the first front side plate, the first left side plate, the first back side plate and the first right side plate are arranged around the first filtering net;

the second filter part comprises a second filter screen, a second front side plate, a second left side plate, a second rear side plate and a second right side plate, the second front side plate, the second left side plate, the second rear side plate and the second right side plate are arranged around the second filter screen, the second filter screen is arranged on a second bottom plate, and the second filter screen is detachably connected with the second bottom plate;

the third filter part comprises a third filter screen, a third front side plate, a third left side plate, a third rear side plate and a third right side plate which are arranged around the third filter screen in a surrounding manner, the third filter screen is arranged on a third bottom plate, and the third filter screen is detachably connected with the third bottom plate;

the aperture of the filtering holes on the first filtering net, the second filtering net and the third filtering net is gradually reduced.

The sedimentation tank for the mine coal slag water is characterized in that: a first lower lifting ring is arranged at one end, extending out of the box body, of the first bottom plate, a first fixed plate is arranged at the top of the box body, a first upper lifting ring is arranged on the first fixed plate, a first upper lifting hook is arranged at the upper end of a first weighing sensor, a first lower lifting hook is arranged at the lower end of the first weighing sensor, the first upper lifting hook is hooked on the first upper lifting ring, and the first lower lifting hook is hooked on the first lower lifting ring;

a second lower lifting ring is arranged at one end, extending out of the box body, of the second bottom plate, a second fixed plate is arranged on the side face of the box body, a second upper lifting ring is arranged on the second fixed plate, a second upper lifting hook is arranged at the upper end of a second weighing sensor, a second lower lifting hook is arranged at the lower end of the second weighing sensor, the second upper lifting hook is hooked on the second upper lifting ring, and the second lower lifting hook is hooked on the second lower lifting ring;

the one end that the third bottom plate stretches out the box is provided with rings under the third, the side of box is provided with the third fixed plate, be provided with rings on the third fixed plate, the upper end of third weighing sensor sets up lifting hook on the third, and lifting hook under the lower extreme of third weighing sensor sets up lifting hook under the third, and lifting hook hangs on rings on the third, and lifting hook hangs under the third on rings.

Compared with the prior art, the utility model has the following advantage:

1. simple structure, reasonable design and simple and convenient installation and layout.

2. The adopted first filtering mechanism comprises a first bottom plate and a first filtering component, the first filtering component filters the cinder water for one time, and large-particle cinder in the cinder water stays on the first filtering component to obtain the cinder water after one-time filtration.

3. The adopted second filtering mechanism comprises a second bottom plate and a second filtering component, the second filtering component carries out secondary filtering on the cinder water, and the medium-particle cinder in the cinder water stays on the second filtering component to obtain the cinder water after secondary filtering.

4. The adopted third filtering mechanism comprises a third bottom plate and a third filtering component, the third filtering component filters the cinder water for three times, and small-particle cinder in the cinder water stays on the third filtering component to obtain the cinder water after three times of filtering.

5. The inclined plate is used for filtering the cinder water after the third filtration for four times in order that the cinder water after the third filtration flows through the inclined plate at the bottom of the box body, and tiny particle cinder in the cinder water stays on the inclined plate to obtain filtrate after the four times of filtration.

In conclusion, the utility model has reasonable design and low cost, realizes the rapid separation of slag and water, and effectively adapts to the operation requirements of high slag yield and high water yield of the hydraulic permeability-increasing operation; and the moving operation is convenient, the repeated use can be realized, and the method is suitable for the rapid construction of coal mine drilling.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural view of the utility model after the front side of the box body is removed.

Fig. 2 is an enlarged view of a point a in fig. 1.

Fig. 3 is an enlarged view at B in fig. 1.

Fig. 4 is an enlarged view at C in fig. 1.

Description of reference numerals:

1, a box body; 1-liquid inlet; 2-a first filtering mechanism;

2-1 — a first base plate; 2-3-a first filter screen; 2-4 — a first left side panel;

2-5-a first front side panel; 2-6-first right side plate; 2-8 — a first fixing plate;

2-9-a first upper lifting ring; 2-10 — a first upper hook; 2-11 — a first load cell;

2-12 — a first lower hook; 2-13-a first lower lifting ring; 2-14 — a first handle;

3-a second filtering mechanism; 3-1 — a second base plate; 3-a second filter screen;

3-4-second left side panel; 3-5-second front side panel; 3-6-second right side plate;

3-8-second fixing plate; 3-9-a second upper lifting ring; 3-10 — a second upper hook;

3-11 — a second load cell; 3-12 — a second lower hook; 3-13-a second lower flying ring;

3-14 — a second handle; 4-a third filtering mechanism; 4-1 — a third base plate;

4-3-a third filter screen; 4-a third left side panel; 4-5-a third front panel;

4-6-third right side panel; 4-8-a third fixing plate; 4-9-a third upper lifting ring;

4-10 — a third upper hook; 4-11 — a third load cell; 4-12 — a third lower hook;

4-13-a third lower lifting ring; 4-14 — third handle; 5, a drainage box;

6, a liquid pumping pipe; 7-a liquid discharge pump; 7-1-drain pipe;

8-inclined plate; 9-pressure sensor.

Detailed Description

The sedimentation tank for mine coal slag water shown in fig. 1 comprises a filter box and a drainage mechanism communicated with the filter box, wherein the filter box comprises a box body 1, and a first filter mechanism, a second filter mechanism and a third filter mechanism which are arranged in the box body 1 and are sequentially arranged from top to bottom, and an inclined component is arranged at the bottom of the box body 1;

the first filter mechanism 2 comprises a first bottom plate 2-1 and a first filter component arranged on the first bottom plate 2-1, the second filter mechanism 3 comprises a second bottom plate 3-1 and a second filter component arranged on the second bottom plate 3-1, the third filter mechanism 4 comprises a third bottom plate 4-1 and a third filter component arranged on the third bottom plate 4-1, and the aperture of filter holes on the first filter component, the second filter component and the third filter component is gradually reduced;

the drainage mechanism comprises a drainage box 5 and a drainage pump 7 arranged in the drainage box 5, a liquid suction pipe 6 of the drainage pump 7 is positioned in the drainage box 5, and a drainage pipe 7-1 of the drainage pump 7 extends out of the drainage box 5;

the inclined component comprises an inclined plate 8 arranged at the bottom of the box body 1, the end part of the inclined plate 8 far away from the drainage box 5 is higher than the end part of the inclined plate 8 close to the drainage box 5, the lower end of the box body 1 close to the inclined plate 8 is provided with a liquid discharge port, and the drainage box 5 is communicated with the liquid discharge port of the box body 1.

In the embodiment, the drainage pump 7 can refer to an FQW type pneumatic submersible pump for mines.

In this embodiment, the first filtering component includes a first filtering net 2-3, and a first front side plate 2-5, a first left side plate 2-4, a first back side plate and a first right side plate 2-6 which are arranged around the first filtering net 2-3, the first filtering net 2-3 is installed on a first bottom plate 2-1, and the first filtering net 2-3 is detachably connected with the first bottom plate 2-1;

the second filtering part comprises a second filtering net 3-3, and a second front side plate 3-5, a second left side plate 3-4, a second back side plate and a second right side plate 3-6 which are arranged around the second filtering net 3-3, the second filtering net 3-3 is arranged on a second bottom plate 3-1, and the second filtering net 3-3 is detachably connected with the second bottom plate 3-1;

the third filtering part comprises a third filtering screen 4-3, and a third front side plate 4-5, a third left side plate 4-4, a third rear side plate and a third right side plate 4-6 which are arranged around the third filtering screen 4-3, wherein the third filtering screen 4-3 is arranged on a third bottom plate 4-1, and the third filtering screen 4-3 is detachably connected with the third bottom plate 4-1;

the aperture of the filtering holes on the first filter screen 2-3, the second filter screen 3-3 and the third filter screen 4-3 is gradually reduced.

As shown in fig. 2, 3 and 4, in this embodiment, a first lower hanging ring 2-13 is provided at one end of the first bottom plate 2-1 extending out of the box body 1, a first fixing plate 2-8 is provided at the top of the box body 1, a first upper hanging ring 2-9 is provided on the first fixing plate 2-8, a first upper hook 2-10 is provided at the upper end of the first weighing sensor 2-11, a first lower hook 2-12 is provided at the lower end of the first weighing sensor 2-11, the first upper hook 2-10 is hung on the first upper hanging ring 2-9, and the first lower hook 2-12 is hung on the first lower hanging ring 2-13;

a second lower lifting ring 3-13 is arranged at one end of the second bottom plate 3-1 extending out of the box body 1, a second fixing plate 3-8 is arranged on the side face of the box body 1, a second upper lifting ring 3-9 is arranged on the second fixing plate 3-8, a second upper lifting hook 3-10 is arranged at the upper end of the second weighing sensor 3-11, a second lower lifting hook 3-12 is arranged at the lower end of the second weighing sensor 3-11, the second upper lifting hook 3-10 is hung on the second upper lifting ring 3-9, and the second lower lifting hook 3-12 is hung on the second lower lifting ring 3-13;

a third lower lifting ring 4-13 is arranged at one end, extending out of the box body 1, of the third bottom plate 4-1, a third fixing plate 4-8 is arranged on the side face of the box body 1, a third upper lifting ring 4-9 is arranged on the third fixing plate 4-8, a third upper lifting hook 4-10 is arranged at the upper end of the third weighing sensor 4-11, a third lower lifting hook 4-12 is arranged at the lower end of the third weighing sensor 4-11, the third upper lifting hook 4-10 is hung on the third upper lifting ring 4-9, and the third lower lifting hook 4-12 is hung on the third lower lifting ring 4-13.

In this embodiment, one end of the first bottom plate 2-1, the second bottom plate 3-1 and the third bottom plate 4-1 extends out of the box body 1.

In this embodiment, it should be noted that the cross sections of the first filter component, the second filter component and the third filter component are smaller than the cross section of the box body 1, and the cross sections of the first filter component, the second filter component and the third filter component are larger than the cross section of the liquid inlet 1-1.

In this embodiment, it should be noted that the center lines of the first filter screen 2-3, the second filter screen 3-3 and the third filter screen 4-3 coincide with the center line of the liquid inlet 1-1.

In the embodiment, the first filtering mechanism comprises a first bottom plate 2-1 and a first filtering part, the first filtering part is used for filtering the cinder water for the first time, and large-particle cinder in the cinder water stays on the first filtering part to obtain the cinder water after the first filtering; in addition, a first weighing sensor 2-11 is arranged to detect the weight of the first coal cinder, so that the first coal cinder can be cleaned in time, and the first filtering part can be prevented from being blocked by large-particle coal cinder.

In the embodiment, the second filtering mechanism comprises a second bottom plate 3-1 and a second filtering component 3-2, the second filtering component carries out secondary filtering on the cinder water, and medium-particle cinder in the cinder water stays on the second filtering component to obtain the cinder water after secondary filtering; in addition, a second weighing sensor 3-11 is arranged to detect the weight of the second coal cinder, so that the second coal cinder is convenient to clean in time, and the second filtering part is prevented from being blocked due to the medium-particle coal cinder.

In the embodiment, the third filtering mechanism comprises a third bottom plate 4-1 and a third filtering component 4-2, the third filtering component is used for filtering the cinder water for three times, and small-particle cinder in the cinder water stays on the third filtering component to obtain the cinder water after the three-time filtering; in addition, a third weighing sensor 4-11 is arranged to detect the weight of the third coal cinder, so that the third coal cinder can be cleaned in time, and the third filter part can be prevented from being blocked due to small-particle coal cinder.

In this embodiment, the inclined plate 8 is provided to filter the cinder water after the third filtration for the cinder water after the third filtration to flow through the inclined plate 8 at the bottom of the box body 1 for four times, and the tiny particle cinder in the cinder water stays on the inclined plate 8 to obtain the filtrate after four times of filtration.

In the embodiment, the first weighing sensors 2-11, the second weighing sensors 3-11 and the third weighing sensors 4-11 can refer to JYZY-A1 weighing sensors, so that the installation is convenient.

In this embodiment, the pressure sensor 9 is located at the bottom of the inclined plate 8, and the pressure sensor 9 may refer to the HZC-B1 pressure sensor. When the pressure detected by the pressure sensor 9 at the bottom of the inclined plate 8 is greater than a set pressure value, the mine can clean the coal slag deposited on the inclined plate 8 in time.

In this embodiment, it should be noted that the front side of the box body 1 is connected with the left side of the box body 1 through a hinge, so that the front side of the wall body 1 can be opened and closed conveniently, and mine personnel can clean coal cinder on the filter element in time conveniently.

In this embodiment, it should be noted that a slag discharge port is formed in the bottom of the side surface of the drainage box 5, so that deposited particles in the drainage box 5 can be conveniently cleaned.

When the utility model is used, the cinder water generated in the hydraulic permeability-increasing operation process is conveyed to the liquid inlet 1-1 at the center of the top of the box body 1 through the drain pipe;

the cinder water flowing through the liquid inlet 1-1 flows through the first filtering part, primary filtering is carried out on the cinder water, and large-particle cinder in the cinder water stays on the first filtering part to obtain the cinder water after primary filtering; the once filtered cinder water flows through the second filtering component, the once filtered cinder water is subjected to secondary filtering, and medium-particle cinder in the cinder water stays on the second filtering component to obtain the secondarily filtered cinder water; the secondarily filtered cinder water flows through the third filtering component, the secondarily filtered cinder water is subjected to tertiary filtering, and small-particle cinder in the cinder water stays on the third filtering component to obtain the thirdly filtered cinder water; the coal slag water after the third filtration passes through the inclined plate 8 at the bottom of the box body 1, the coal slag water after the third filtration is filtered for four times, and tiny particle coal slag with the particle size not larger than 0.5mm in the coal slag water stays on the inclined plate 8, so that filtrate after the fourth filtration is obtained; the liquid discharge pump 7 is operated, and the liquid discharge pump 7 pumps filtrate in the drainage box 5 through the liquid suction pipe 6 and discharges the filtrate to the mine sewage pipeline through the liquid discharge pipe 7-1.

In the embodiment, the first weighing sensors 2-11 detect a first initial weight, the second weighing sensors 3-11 detect a second initial weight, the third weighing sensors 4-11 detect a third initial weight, and when the cinder water flows through the first filtering component, the first weighing sensors detect a first weight detection value, the first weight detection value and the first initial weight are differed to obtain a first cinder weight, so that mine personnel can clean the cinder on the first filtering component in time according to the first cinder weight; in the process that the once-filtered cinder water flows through the second filtering component, the second weighing sensor 3-11 detects a second weight detection value, the difference between the second weight detection value and the second initial weight is obtained to obtain the weight of the second cinder, and mine personnel can conveniently clean the cinder on the second filtering component in time according to the weight of the second cinder; and in the process that the coal cinder water after secondary filtration flows through the third filtering component, a third weight detection value detected by the third weighing sensor 4-11 is subtracted from the third initial weight to obtain a third coal cinder weight, and mine personnel can clean the coal cinder on the third filtering component conveniently in time according to the third coal cinder weight.

In this embodiment, the diameter of the filtering holes of the first filter screen 2-3 is 5mm, the diameter of the filtering holes of the second filter screen 3-3 is 1mm, and the diameter of the filtering holes of the third filter screen 4-3 is 0.5 mm.

In the embodiment, the first weight of the coal cinder is obtained through the first weighing sensors 2-11, the second weight of the coal cinder is obtained through the second weighing sensors 2-11, and the third weight of the coal cinder is obtained through the third weighing sensors 4-11, so that the total weight of the coal cinder can be obtained, the slag discharge amount of the drilling hole in the hydraulic anti-reflection operation can be accurately obtained, and the pressure relief analysis of the drilling hole is facilitated.

In conclusion, the utility model has reasonable design and low cost, realizes the rapid separation of slag and water, and effectively adapts to the operation requirements of high slag yield and high water yield of the hydraulic permeability-increasing operation; and the moving operation is convenient, the repeated use can be realized, and the method is suitable for the rapid construction of coal mine drilling.

The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims (3)

1. A sedimentation tank of mine cinder water which characterized in that: the filter box comprises a filter box body (1) and a first filter mechanism, a second filter mechanism and a third filter mechanism which are arranged in the filter box body (1) from top to bottom in sequence, wherein an inclined part is arranged at the bottom of the filter box body (1);

the first filtering mechanism (2) comprises a first bottom plate (2-1) and a first filtering component arranged on the first bottom plate (2-1), the second filtering mechanism (3) comprises a second bottom plate (3-1) and a second filtering component arranged on the second bottom plate (3-1), the third filtering mechanism (4) comprises a third bottom plate (4-1) and a third filtering component arranged on the third bottom plate (4-1), and the aperture of filtering holes in the first filtering component, the second filtering component and the third filtering component is gradually reduced;

the drainage mechanism comprises a drainage box (5) and a drainage pump (7) arranged in the drainage box (5), a liquid pumping pipe (6) of the drainage pump (7) is positioned in the drainage box (5), and a drainage pipe (7-1) of the drainage pump (7) extends out of the drainage box (5);

the inclined component comprises an inclined plate (8) arranged at the bottom of the box body (1), the end part of the inclined plate (8) far away from the drainage box (5) is higher than the end part of the inclined plate (8) close to the drainage box (5), the lower end of the box body (1) close to the inclined plate (8) is provided with a liquid discharge port, and the drainage port of the drainage box (5) is communicated with the liquid discharge port of the box body (1).

2. A sedimentation tank for mine coal slag water as claimed in claim 1, wherein: the first filtering part comprises a first filtering net (2-3), a first front side plate (2-5), a first left side plate (2-4), a first rear side plate and a first right side plate (2-6) which are arranged around the first filtering net (2-3), the first filtering net (2-3) is arranged on a first bottom plate (2-1), and the first filtering net (2-3) is detachably connected with the first bottom plate (2-1);

the second filtering part comprises a second filtering net (3-3), and a second front side plate (3-5), a second left side plate (3-4), a second rear side plate and a second right side plate (3-6) which are arranged around the second filtering net (3-3), the second filtering net (3-3) is arranged on a second bottom plate (3-1), and the second filtering net (3-3) is detachably connected with the second bottom plate (3-1);

the third filtering part comprises a third filtering net (4-3), and a third front side plate (4-5), a third left side plate (4-4), a third rear side plate and a third right side plate (4-6) which are arranged around the third filtering net (4-3), wherein the third filtering net (4-3) is arranged on a third bottom plate (4-1), and the third filtering net (4-3) is detachably connected with the third bottom plate (4-1);

the aperture of the filtering holes on the first filter screen (2-3), the second filter screen (3-3) and the third filter screen (4-3) is gradually reduced.

3. A sedimentation tank for mine coal slag water as claimed in claim 1, wherein: one end of the first bottom plate (2-1) extending out of the box body (1) is provided with a first lower lifting ring (2-13), the top of the box body (1) is provided with a first fixing plate (2-8), the first fixing plate (2-8) is provided with a first upper lifting ring (2-9), the upper end of the first weighing sensor (2-11) is provided with a first upper lifting hook (2-10), the lower end of the first weighing sensor (2-11) is provided with a first lower lifting hook (2-12), the first upper lifting hook (2-10) is hooked on the first upper lifting ring (2-9), and the first lower lifting hook (2-12) is hooked on the first lower lifting ring (2-13);

a second lower lifting ring (3-13) is arranged at one end, extending out of the box body (1), of the second bottom plate (3-1), a second fixing plate (3-8) is arranged on the side face of the box body (1), a second upper lifting ring (3-9) is arranged on the second fixing plate (3-8), a second upper lifting hook (3-10) is arranged at the upper end of a second weighing sensor (3-11), a second lower lifting hook (3-12) is arranged at the lower end of the second weighing sensor (3-11), the second upper lifting hook (3-10) is hung on the second upper lifting ring (3-9), and the second lower lifting hook (3-12) is hung on the second lower lifting ring (3-13);

one end, extending out of the box body (1), of the third bottom plate (4-1) is provided with a third lower lifting ring (4-13), a third fixing plate (4-8) is arranged on the side face of the box body (1), a third upper lifting ring (4-9) is arranged on the third fixing plate (4-8), a third upper lifting hook (4-10) is arranged at the upper end of a third weighing sensor (4-11), a third lower lifting hook (4-12) is arranged at the lower end of the third weighing sensor (4-11), the third upper lifting hook (4-10) is hung on the third upper lifting ring (4-9), and the third lower lifting hook (4-12) is hung on the third lower lifting ring (4-13).

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