Lithium carbonate storage device

Abstract

The lithium carbonate storage device comprises a base frame, a storage tank is fixedly mounted at the top of the base frame, and a stirring mechanism is movably mounted in the storage tank; by adopting the structure and arranging the feeding mechanism, lithium carbonate materials can be added into the feeding hopper during use, the materials enter the connecting valve through auxiliary guiding of the feeding mechanism, the materials enter the feeding inclined pipe after being opened, the first motor is started to drive the feeding auger to rotate, and the materials are efficiently conveyed to the storage tank; the connecting valve is closed after materials are added, the storage tank is sealed by the top cover, double sealing ensures that sealing storage and feeding are carried out in the inclined pipe, the materials cannot fall off, stability is high, feeding stability is greatly improved, guarantee is provided for efficient use of equipment, the feeding mode is accurate and stable, the storage environment of lithium carbonate can be effectively guaranteed, and production efficiency is improved. And the smooth production process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to lithium carbonate storage technical field, especially relate to a lithium carbonate storage device. BACKGROUND

[0002] At present, many factors need to be considered for lithium carbonate storage. First of all, environmental conditions. Since lithium carbonate can easily absorb carbon dioxide and moisture in the air, the storage environment should be dry and have a relatively stable carbon dioxide concentration. Therefore, sealed containers or warehouses are usually chosen for storage. For example, plastic barrels, metal barrels, etc. are used for sealed packaging and placed in well-ventilated indoor warehouses. The humidity of the warehouse should be controlled at a low level to prevent lithium carbonate from getting wet and deteriorating. During storage, the placement of lithium carbonate should be neat to avoid leakage or contamination caused by damaged packaging. In addition, from a safety perspective, lithium carbonate is a chemical that should be stored away from heat sources and heat sources. High temperatures may cause some chemical reactions or packaging damage. At the same time, it should also be stored separately from acids and other substances that may react with it to prevent accidental chemical reactions and ensure the chemical stability and safety of lithium carbonate during storage to meet the subsequent use requirements in battery manufacturing, medicine and other fields.

[0003] A lithium carbonate storage device with publication number "CN220843830U" is disclosed. It includes a storage box bottom with support legs at each corner. The front side of the support leg is provided with a controller. The right side of the storage box is provided with a feeding mechanism. The beneficial effect is that the second motor can drive the roller to rotate, so that the conveyor belt can rotate and move, thereby placing lithium carbonate on the conveyor belt. The baffle can prevent lithium carbonate from flowing down from the conveyor belt, so that the conveyor belt can deliver lithium carbonate to the inside of the storage box, thereby realizing automatic feeding and improving work efficiency.

[0004] The above-mentioned device can provide convenience for feeding operation in some aspects during use, but there are still some obvious defects and deficiencies in the specific use process. First of all, the overall device lacks a corresponding protection structure at the feeding window. In actual use, there is no protection measure, and the inside of the storage box also lacks a sealing structure, which makes the feeding window become a channel for communication between lithium carbonate and the outside air during use. Lithium carbonate can easily absorb carbon dioxide and moisture in the air. This communication state can greatly affect the storage effect of lithium carbonate, reduce its quality and stability. Secondly, the device is provided with a stirring structure, but when maintenance and repair of the stirring structure are needed, quick disassembly and repair cannot be realized, which undoubtedly brings great trouble to the maintenance work of the equipment and increases the maintenance cost and time. In summary, it can be seen that the device has some defects and deficiencies in use, and urgent improvement and optimization are needed to improve its performance and reliability. Utility model content

[0005] In view of the problems mentioned in the background art, the utility model aims at providing a lithium carbonate storage device to solve the problems of lack of sealing performance during application of the prior art and inconvenience in cleaning and maintenance of the interior thereof.

[0006] The above technical purpose of the utility model is realized by the following technical scheme.

[0007] A lithium carbonate storage device, comprising a base frame, a storage tank is fixedly installed on the top of the base frame, a stirring mechanism is movably installed in the interior of the storage tank, a lifting mechanism is fixedly installed on one side of the storage tank, the top of the stirring mechanism and the lifting mechanism is fixedly connected, a feeding mechanism is fixedly installed on the side of the storage tank away from the lifting mechanism, the upper end of the feeding mechanism and the interior of the storage tank are in communication, a discharge hopper is fixedly connected to the bottom of the storage tank, a discharge valve is fixedly connected to the bottom of the discharge hopper, and a discharge pipe is fixedly connected to the output end of the discharge valve.

[0008] The feeding mechanism comprises a feeding inclined pipe, the feeding inclined pipe is fixedly installed on the side of the storage tank away from the lifting mechanism, the output end of the feeding inclined pipe and the interior of the storage tank are in communication, a feeding assembly is fixedly installed on the end of the top of the feeding inclined pipe away from the storage tank, a first motor is fixedly installed on the outer end of the feeding inclined pipe, a feeding auger is fixedly installed on the output end of the first motor and penetrates through the feeding inclined pipe, and the feeding auger is rotatably connected to the interior of the feeding inclined pipe.

[0009] In an embodiment, the feeding assembly comprises a feeding hopper, and the feeding hopper is fixedly installed on the end of the feeding inclined pipe away from the storage tank.

[0010] In an embodiment, a connecting valve is fixedly installed on the bottom of the feeding hopper, and the bottom of the connecting valve and the interior of the feeding inclined pipe are in communication.

[0011] In an embodiment, the lifting mechanism comprises an upright rail, and the upright rail is fixedly installed on the middle part of the side of the base frame away from the feeding inclined pipe.

[0012] In an embodiment, a second motor is fixedly installed on the bottom of the upright rail, a lead screw is fixedly installed on the output end of the second motor and penetrates through the upright rail, the lead screw is rotatably connected to the interior of the upright rail, a sliding block is threadedly connected to the outer surface of the lead screw, a connecting frame is fixedly installed on the top of the sliding block, and the top of the connecting frame and the lifting mechanism are fixedly connected.

[0013] In one embodiment, the stirring mechanism comprises a top cover covering the top of the storage tank, a fixed disc fixedly installed in the middle of the top of the top cover, the fixed disc being fixedly installed on the upper end of the connecting frame, a third motor fixedly installed on the top of the fixed disc, an output end of the third motor being fixedly installed with a stirring frame penetrating through the fixed disc and the top cover, the stirring frame being rotatably connected to the inside of the storage tank.

[0014] In one embodiment, the stirring frame comprises a rotating shaft rotatably connected to the middle of the bottom of the top cover, the top of the rotating shaft being fixedly connected with the output end of the third motor, a material guiding auger being fixedly installed on the lower end of the outer surface of the rotating shaft.

[0015] In one embodiment, equidistantly fixedly installed on the upper end of the outer surface of the rotating shaft are stirring plates, the overall cross-sectional shape of the stirring plates being rhombic.

[0016] In one embodiment, the overall lower end shape of the material guiding auger and the overall row shape of the discharge hopper are both conical.

[0017] In one embodiment, fixedly installed on the four corners of the bottom of the base frame are support shafts, the bottom of the support shafts being fixedly installed with a support bottom plate.

[0018] In summary, the utility model mainly has the following beneficial effects:

[0019] Firstly, the device is provided with a feeding mechanism, lithium carbonate materials are added into the feeding hopper during use, the materials are guided into the connecting valve, the materials enter the feeding inclined pipe after the connecting valve is opened, the feeding auger is rotated by starting the first motor, high-efficiency material conveying to the storage tank is realized, the connecting valve is closed after the materials are added, the top cover is closed to seal the storage tank, double sealing ensures sealed storage, feeding is carried out in the inclined pipe, the materials cannot fall off, the stability is high, the feeding stability is greatly improved, the device is provided with protection for high-efficiency use, the feeding mode is accurate and stable, the storage environment of lithium carbonate can be effectively ensured, and the production process can be smoothly carried out.

[0020] Secondly, the lifting mechanism of the device brings many conveniences in use, the second motor is started during maintenance, the screw rod is rotated to make the sliding block slide on the vertical rail, the connecting frame and the top cover are displaced, the stirring frame can be pulled out and the storage tank can be cleaned, the third motor is started to open the discharge valve when lithium carbonate materials are discharged, the materials are discharged through the discharge pipe, the rotating shaft rotates to drive the material guiding auger and the stirring plate, material agglomeration is avoided and the discharge uniformity is improved, the design is convenient for device use, the overall convenience is improved, the device can flexibly cope with different requirements in the production process, whether it is maintenance or discharge is more efficient, and a reliable solution is provided for lithium carbonate processing and storage. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Fig. 2 This is a top view of the structure of this utility model;

[0023] Fig. 3 This is a bottom view structural diagram of this utility model;

[0024] Fig. 4 This is a schematic diagram of the lifting mechanism of this utility model in its unfolded state;

[0025] Fig. 5 This is a schematic diagram of the stirring mechanism of this utility model.

[0026] Reference numerals in the attached drawings: 1. Base frame; 2. Storage tank; 3. Stirring mechanism; 31. Top cover; 32. Fixed plate; 33. Third motor; 34. Stirring frame; 341. Rotating shaft; 342. Guide auger; 343. Stirring plate; 4. Discharge valve; 5. Discharge pipe; 6. Lifting mechanism; 61. Vertical rail; 62. Second motor; 63. Lead screw; 64. Sliding block; 65. Connecting frame; 7. Feeding mechanism; 71. Feeding inclined pipe; 72. Feeding assembly; 721. Feeding hopper; 722. Connecting valve; 73. First motor; 74. Feeding auger; 8. Discharge hopper; 9. Support shaft; 10. Support base plate. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] Example

[0029] like Figs. 1-5 As shown, a lithium carbonate storage device according to this embodiment includes a base frame 1, a storage tank 2 fixedly installed on the top of the base frame 1, a stirring mechanism 3 movably installed inside the storage tank 2, a lifting mechanism 6 fixedly installed on one side of the storage tank 2, the top of the stirring mechanism 3 and the lifting mechanism 6 fixedly connected, a feeding mechanism 7 fixedly installed on the side of the storage tank 2 away from the lifting mechanism 6, the upper end of the feeding mechanism 7 communicating with the inside of the storage tank 2, a discharge hopper 8 fixedly connected to the bottom of the storage tank 2, a discharge valve 4 fixedly connected to the bottom of the discharge hopper 8, and a discharge pipe 5 fixedly connected to the output end of the discharge valve 4.

[0030] The feeding mechanism 7 comprises a feeding inclined pipe 71 fixedly installed on the side of the storage tank 2 away from the lifting mechanism 6, the output end of the feeding inclined pipe 71 is in communication with the inside of the storage tank 2, the top of the feeding inclined pipe 71 is fixedly installed with a feeding assembly 72 at the end away from the storage tank 2, the outer end of the feeding inclined pipe 71 is fixedly installed with a first motor 73, the output end of the first motor 73 is fixedly installed with a feeding auger 74 penetrating through the feeding inclined pipe 71, the feeding auger 74 is rotatably connected to the inside of the feeding inclined pipe 71, the feeding inclined pipe 71 is fixed on the side of the storage tank 2, providing a stable channel for the feeding of lithium carbonate, the feeding assembly 72 is arranged to enable the material to smoothly enter the feeding inclined pipe 71, the first motor 73 provides power for the feeding auger 74, the feeding auger 74 is rotatably connected to the inside of the feeding inclined pipe 71, which can efficiently convey lithium carbonate material into the storage tank 2, this design ensures the stability and continuity of the feeding process, avoiding the instability and inefficiency of manual feeding, at the same time, the output end of the feeding inclined pipe 71 is in communication with the inside of the storage tank 2, enabling the material to be accurately added to the storage tank 2, reducing the waste and loss of material, the overall design of the feeding mechanism 7 improves the automation level of the lithium carbonate storage device, saving time and labor cost for the production process, making the device more efficient and reliable in the storage and processing of lithium carbonate.

[0031] As shown in Figs. 1-4 The feeding assembly 72 comprises a feeding hopper 721 fixedly installed at the end of the feeding inclined pipe 71 away from the storage tank 2, the bottom of the feeding hopper 721 is fixedly installed with a connecting valve 722, the bottom of the connecting valve 722 is in communication with the inside of the feeding inclined pipe 71, the bottom of the base frame 1 is fixedly installed with a support shaft 9 at four corners, the bottom of the support shaft 9 is fixedly installed with a support bottom plate 10, the feeding hopper 721 is fixedly installed at the end of the feeding inclined pipe 71, providing a larger inlet for the addition of lithium carbonate material, facilitating operation and improving the efficiency of feeding, the connecting valve 722 at the bottom of the feeding hopper 721 can control the inflow of material, when feeding is needed, the connecting valve 722 is opened, the material can smoothly enter the feeding inclined pipe 71, while when feeding is not needed, the connecting valve 722 is closed, preventing external air from entering the feeding inclined pipe 71 and the storage tank 2, ensuring the storage environment of lithium carbonate, the support shaft 9 at the four corners of the bottom of the base frame 1 and the support bottom plate 10 provide stable support for the entire device, the support shaft 9 can effectively disperse the weight of the device, making the device more stable during operation, the support bottom plate 10 increases the contact area with the ground, further improving the stability of the device, preventing the device from shaking or tilting during operation, ensuring the safe and reliable operation of the feeding process and the entire lithium carbonate storage device.

[0032] As shown in Figs. 1-4As shown, the lifting mechanism 6 comprises a vertical rail 61 fixedly installed in the middle of one side of the base frame 1 away from the feeding inclined pipe 71, the bottom of the vertical rail 61 is fixedly installed with a second motor 62, the output end of the second motor 62 is fixedly installed with a lead screw 63 penetrating through the vertical rail 61, the lead screw 63 is rotationally connected to the inside of the vertical rail 61, the outer surface of the lead screw 63 is threadedly connected with a sliding block 64, the top of the sliding block 64 is fixedly installed with a connecting frame 65, the top of the connecting frame 65 is fixedly connected with the lifting mechanism 6, the vertical rail 61 is fixed in the middle of one side of the base frame 1, which provides stable structural support for the whole lifting mechanism 6, the second motor 62 at the bottom serves as a power source and has powerful output capacity to accurately control the rotation of the lead screw 63, the lead screw 63 is rotationally connected to the inside of the vertical rail 61 and converts the rotary motion into linear motion through the threaded connection with the sliding block 64, which realizes the accurate adjustment of the height of the sliding block 64, this design enables the connecting frame 65 and the connected parts to move up and down smoothly, so that the stirring mechanism 3 can be easily pulled out of the storage tank 2 when maintenance is needed, which greatly improves the convenience of maintenance, at the same time, when the inside of the storage tank 2 needs to be cleaned, the top can also be easily opened, which provides good conditions for cleaning work, the design of the whole lifting mechanism 6 improves the maintainability and operation flexibility of the device and ensures the stability and reliability of the device in use.

[0033] As Figs. 4-5As shown, the stirring mechanism 3 comprises a top cover 31 covering the top of the storage tank 2, a fixed disc 32 fixedly installed in the middle of the top of the top cover 31, the fixed disc 32 being fixedly installed at the upper end of the connecting frame 65, a third motor 33 fixedly installed at the top of the fixed disc 32, a stirring frame 34 fixedly installed at the output end of the third motor 33 penetrating through the fixed disc 32 and the top cover 31, the stirring frame 34 being rotatably connected to the inside of the storage tank 2, the stirring frame 34 comprising a rotating shaft 341 rotatably connected to the middle of the bottom of the top cover 31, the rotating shaft 341 being fixedly connected to the output end of the third motor 33, a material guiding auger 342 fixedly installed at the lower end of the outer surface of the rotating shaft 341, and diamond-shaped stirring plates 343 fixedly installed at the upper end of the outer surface of the rotating shaft 341 at equal intervals, the overall cross-sectional shape of the diamond-shaped stirring plates 343 being diamond-shaped, the overall lower end shape of the material guiding auger 342 and the overall shape of the discharge hopper 8 both being conical, the top cover 31 covering the top of the storage tank 2 to achieve good sealing effect, preventing excessive contact of lithium carbonate with external air to affect its storage effect, the fixed disc 32 providing a stable installation basis for the third motor 33 to ensure that the motor remains stable during operation, the third motor 33 serving as a power source to accurately drive the stirring frame 34 to work, the rotating shaft 341 of the stirring frame 34 being rotatably connected to the middle of the bottom of the top cover 31 to ensure the stability of the stirring process, the material guiding auger 342 at the lower end of the outer surface of the rotating shaft 341 assisting the smooth discharge of lithium carbonate material during discharge to avoid blockage, and also playing a certain pushing and mixing role during the stirring process, the diamond-shaped stirring plates 343 distributed at equal intervals at the upper end of the outer surface of the rotating shaft 341 being able to efficiently stir the lithium carbonate in the storage tank 2 to avoid material agglomeration, the diamond-shaped design increasing the contact area and stirring effect, the material guiding auger 342 and the discharge hopper 8 being conical, which is conducive to the flow and concentration of the material, further improving the discharge efficiency and stirring uniformity. Overall, the design of the stirring mechanism 3 enables the lithium carbonate in the storage tank 2 to be fully stirred and stably discharged, improving the practicality and reliability of the device.

[0034] Use principle and advantage: By setting up the feeding mechanism 7, the device can add lithium carbonate material into the feeding hopper 721 during use. The feeding hopper 721 plays an important role in auxiliary guidance and can accurately guide the material into the connecting valve 722. After opening the connecting valve 722, the material can smoothly enter the feeding inclined pipe 71. At this time, the first motor 73 is started to run, and the first motor 73 can drive the feeding auger 74 to rotate in full power. The rotation of the feeding auger 74 inside the feeding inclined pipe 71 is like an efficient porter that assists in conveying materials. In this way, the lithium carbonate material can be accurately guided through the feeding inclined pipe 71 and stably added into the storage tank 2. After the material is added, the connecting valve 722 is closed. At this time, the inlet of the feeding inclined pipe 71 is closed, and the top of the storage tank 2 is closed by the top cover 31. The double sealing effect makes the device have good sealing storage effect. Moreover, the feeding process is carried out inside the feeding inclined pipe 71, and the material will not fall during the overall feeding process, showing strong stability. This feeding method greatly improves the overall feeding stability of the device and provides a strong guarantee for the efficient use of the equipment.By setting the lifting mechanism 6, so that the device during use, when the device is in use, if the need for maintenance, can start the second motor 62 operation, the second motor 62 driven lead screw 63 in the inside of the rail 61 full of rhythm rotating, at this time, the rotation of the lead screw 63 can drive the sliding block 64 in the inside of the rail 61 smoothly sliding, through the sliding block 64 in the inside of the rail 61 up and down displacement, and then assist in adjusting the sliding block 64 up and down displacement, the displacement of the sliding block 64 can drive the connecting frame 65 up and down, connecting frame 65 up and down can drive the top cover 31 up and down displacement, in this way, the stirring frame 34 from the storage tank 2 is easily extracted from the inside, at the same time, the storage tank 2 is opened also facilitates the inside of the storage tank 2 to carry on the comprehensive cleaning maintenance, and in the use process, if the need to discharge lithium carbonate raw materials, can start the third motor 33 operation, at the same time open the discharge valve 4 at the bottom of the discharge hopper 8, at this time, the discharge valve 4 is opened, the lithium carbonate material in the storage tank 2 can be stably discharged through the discharge valve 4 at the bottom of the discharge hopper 8, through the guidance of the discharge pipe 5, the lithium carbonate material can be stably discharged, the third motor 33 drive shaft 341 rotation, can drive the material guiding auger 342 in the discharge hopper 8 in the storage tank 2 rotation material conveying extrusion, this design makes the lithium carbonate material can be stably discharged through the discharge valve 4, at the same time, the rotation of the shaft 341 can drive the stirring plate 343 in the inside of the storage tank 2 rotation, through the rotation of the stirring plate 343, can be stirred in the inside of the storage tank 2, which can stably stir the lithium carbonate raw materials, effectively avoid the lithium carbonate material lumping, and, its cooperation material guiding auger 342 auxiliary guide stirring, can further improve the uniformity of material discharge, this design facilitates the use of the equipment, greatly improves the convenience of the device as a whole.

[0035] Finally, it should be noted that: the above examples are used to illustrate the technical scheme of the present application, rather than limit it; although the technical scheme of the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that it can still modify the technical scheme recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the spirit and scope of the technical scheme of each embodiment of the present application.

Claims

1. A lithium carbonate storage device comprising a base frame (1), characterised in that: The top of the base frame (1) is fixedly installed with a storage tank (2), the inside of the storage tank (2) is movably installed with a stirring mechanism (3), one side of the storage tank (2) is fixedly installed with a lifting mechanism (6), the top of the stirring mechanism (3) and the lifting mechanism (6) is fixedly connected, one side of the storage tank (2) away from the lifting mechanism (6) is fixedly installed with a feeding mechanism (7), the upper end of the feeding mechanism (7) is communicated with the inside of the storage tank (2), the bottom of the storage tank (2) is fixedly connected with a discharge hopper (8), the bottom of the discharge hopper (8) is fixedly connected with a discharge valve (4), the output end of the discharge valve (4) is fixedly connected with a discharge pipe (5). The feeding mechanism (7) comprises a feeding inclined pipe (71), the feeding inclined pipe (71) is fixedly installed on one side of the storage tank (2) away from the lifting mechanism (6), the output end of the feeding inclined pipe (71) is communicated with the inside of the storage tank (2), the top of the feeding inclined pipe (71) is fixedly installed with a feeding assembly (72) away from one end of the storage tank (2), the outer end of the feeding inclined pipe (71) is fixedly installed with a first motor (73), the output end of the first motor (73) is fixedly installed with a feeding auger (74) penetrating through the feeding inclined pipe (71), and the feeding auger (74) is rotatably connected to the inside of the feeding inclined pipe (71).

2. The lithium carbonate storage device of claim 1, wherein: The feeding assembly (72) comprises a feeding hopper (721), and the feeding hopper (721) is fixedly installed on one end of the feeding inclined pipe (71) away from the storage tank (2).

3. The lithium carbonate storage device of claim 2, wherein: The bottom of the feeding hopper (721) is fixedly installed with a connecting valve (722), and the bottom of the connecting valve (722) is communicated with the inside of the feeding inclined pipe (71).

4. The lithium carbonate storage device of claim 1, wherein: The lifting mechanism (6) comprises an upright rail (61), and the upright rail (61) is fixedly installed on one side of the base frame (1) away from the feeding inclined pipe (71) and at the middle part.

5. The lithium carbonate storage device of claim 4, wherein: The bottom of the upright rail (61) is fixedly installed with a second motor (62), the output end of the second motor (62) is fixedly installed with a lead screw (63) penetrating through the upright rail (61), the lead screw (63) is rotatably connected to the inside of the upright rail (61), the outer surface of the lead screw (63) is threadedly connected with a sliding block (64), the top of the sliding block (64) is fixedly installed with a connecting frame (65), and the top of the connecting frame (65) is fixedly connected with the lifting mechanism (6).

6. The lithium carbonate storage device of claim 5, wherein: The stirring mechanism (3) comprises a top cover (31), the top cover (31) covers the top of the storage tank (2), the top of the top cover (31) is fixedly installed with a fixed disc (32) at the middle part, the fixed disc (32) is fixedly installed on the upper end of the connecting frame (65), the top of the fixed disc (32) is fixedly installed with a third motor (33), the output end of the third motor (33) is fixedly installed with a stirring frame (34) penetrating through the fixed disc (32) and the top cover (31), and the stirring frame (34) is rotatably connected to the inside of the storage tank (2).

7. The lithium carbonate storage device of claim 6, wherein: Said stirring frame (34) includes a rotating shaft (341), which is rotationally connected to the middle of the bottom of the top cover (31), the top of the rotating shaft (341) is fixedly connected with the output end of the third motor (33), and the outer surface of the lower end of the rotating shaft (341) is fixedly installed with a material guiding auger (342).

8. The lithium carbonate storage device of claim 7, wherein: The outer surface of the upper end of the rotating shaft (341) is fixedly installed with stirring plates (343) at equal intervals, and the overall cross-sectional shape of the stirring plates (343) is rhombic.

9. The lithium carbonate storage device of claim 8, wherein: The overall lower end shape of the material guiding auger (342) and the overall row shape of the discharging hopper (8) are both conical.

10. The lithium carbonate storage device of claim 1, wherein: The bottom of the base frame (1) is fixedly installed with supporting shafts (9) at four corners, and the bottom of each supporting shaft (9) is fixedly installed with a supporting bottom plate (10).

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