Weighing device for calcium carbonate powder production package

By using infrared ranging sensors and the vibration effect of the gas pusher in the calcium carbonate powder packaging device, the problem of residual powder falling off the discharge tube is solved, and efficient powder cleaning and clean working environment is achieved.

CN222988415UActive Publication Date: 2025-06-17LIANZHOU JINYUAN CALCIUM CARBONATE CO LTD
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Patent Information

Application Number
CN202421667409.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-15
Publication Date
2025-06-17
Estimated Expiration
2034-07-15

AI Technical Summary

Technical Problem

In the push-packing operation of calcium carbonate powder, powder often remains at the outlet end of the discharge pipe, causing the powder to fall to the ground, increasing the cleaning workload.

Method used

A weighing device for the production and packaging of calcium carbonate powder is designed, and an infrared ranging sensor is used to monitor the distance between the support frame and the main body of the device. When the outlet pipe port is vertically opposite to the receiving plate, the vibration effect of the second gas push rod causes the residual powder to fall on the receiving plate.

Benefits of technology

It effectively prevents calcium carbonate powder from falling on the ground, significantly reducing the burden of powder cleaning and improving work efficiency and cleanliness.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a weighing device for calcium carbonate powder production packaging, and relates to the field of powder packaging devices. The bag pushing device comprises a device body and a bag pushing assembly, the bag pushing assembly comprises a mounting plate, the top of the mounting plate is in sliding connection with a supporting frame through a sliding rail and a sliding plate, a bearing plate is arranged on one side of the supporting frame, a limiting plate is arranged on one side of the bearing plate, and a bearing basin is arranged on one side of the bottom of the bearing plate. Through the bearing plate, the abutting mechanism and the infrared distance measuring sensor, after a control center in the electric cabinet receives a signal, a second air push rod is immediately controlled to work, the second air push rod strikes the discharging pipe, residual calcium carbonate powder at the end opening of the discharging pipe falls on the bearing plate through the generated vibration effect, and the discharging pipe is prevented from falling off. And then the falling calcium carbonate powder slides into the receiving basin along the inclined surface, so that the powder is prevented from falling on the ground, and the cleaning burden of the calcium carbonate powder is effectively reduced.
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Description

Technical Field

[0001] The utility model relates to the field of powder packaging devices, in particular to a weighing device for the production and packaging of calcium carbonate powder. Background Technique

[0002] The automatic metering and pushing bag packaging machine is an automatic packaging device for powders or granular materials such as calcium carbonate. By equipped with a precise metering device, the packaging machine can automatically weigh the required weight of calcium carbonate and convey it into the packaging bag, which can ensure that the weight of each package is accurate, improve production efficiency. This type of packaging machine generally adopts the pushing bag method, that is, the weighed calcium carbonate is pushed into the packaging bag. This method is more efficient and faster than the traditional filling method. The equipment is equipped with an automatic control system such as a PLC, which can realize a fully automatic production process, reduce manual intervention, and improve production efficiency and quality.

[0003] At present, in the calcium carbonate packaging industry, the automatic metering and pushing bag packaging machine has been widely used. The machine uses a pushing bag component to effectively handle the outer valve bag of calcium carbonate during the packaging process. However, in actual operation, whenever the calcium carbonate filling process ends, the pushing bag component will push the outer valve bag to adjust its position so that the discharge pipe can be smoothly withdrawn from the bag. However, during this process, some calcium carbonate powder often remains at the outlet end of the discharge pipe, and these residual powders may fall to the ground during the pushing bag operation, thus increasing the workload of cleaning calcium carbonate powder and bringing an extra burden to the production site. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a weighing device for the production and packaging of calcium carbonate powder, so as to solve the technical problem that during the pushing bag operation, some calcium carbonate powder falls to the ground, thereby increasing the cleaning burden of calcium carbonate powder.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A weighing device for the production and packaging of calcium carbonate powder, including a device main body and a pushing bag component. The pushing bag component includes a mounting plate. The top of the mounting plate is slidably connected with a support frame through a slide rail and a slide plate. One side of the support frame is provided with a receiving plate. One side of the receiving plate is provided with a limiting plate. One side of the bottom of the receiving plate is provided with a receiving basin.

[0006] The front surface of the device main body is provided with a discharge pipe. Above the discharge pipe is provided with a pressing mechanism. The pressing mechanism includes a mounting frame. A second air push rod is installed on the mounting frame. One side of the surface of the device main body is provided with an infrared distance measuring sensor.

[0007] By adopting the above technical solution, the infrared distance measuring sensor continuously monitors the distance between the support frame and the device main body. When the port of the discharge pipe and the receiving plate form a vertically opposite positional relationship, by utilizing the vibration effect of hitting, the calcium carbonate powder remaining at the port of the discharge pipe is vibrated and falls onto the receiving plate, significantly reducing the burden of cleaning the powder.

[0008] Furthermore, the pressing mechanism is used to abut against the discharge pipe and the outer valve pocket, and baffles are provided on both sides of the top of the support frame.

[0009] By adopting the above technical solution, the pressing mechanism ensures a firm connection between the discharge pipe and the outer valve pocket by closely abutting them, and this firm connection effectively prevents leakage or spillage that may occur during the filling process of calcium carbonate powder.

[0010] Furthermore, both the support frame and the receiving plate are inclined structures for guiding the outer valve pocket and calcium carbonate powder.

[0011] By adopting the above technical solution, the outer valve pocket can smoothly slide down along the inclined plane, effectively guiding the moving direction of the outer valve pocket, avoiding jamming or deviation from the track that may occur during the bag pushing process, and improving the smoothness and efficiency of the packaging operation.

[0012] Furthermore, a first air push rod is provided inside the support frame, and the telescopic end of the first air push rod is fixedly connected to the device main body.

[0013] By adopting the above technical solution, the first air push rod provides strong power support for the device, and the fixed connection between its telescopic end and the device main body ensures the stability and reliability of the bag pushing operation.

[0014] Furthermore, an inner support mechanism is provided outside the discharge pipe, and the inner support mechanism is used to internally support the feed port of the outer valve pocket.

[0015] By adopting the above technical solution, the setting of the inner support mechanism plays a key role in internally supporting the feed port of the outer valve pocket. During the filling process of calcium carbonate powder, the outer valve pocket needs to maintain a certain opening size to ensure the smooth inflow of the powder. The inner support mechanism can effectively support the feed port of the outer valve pocket, ensuring the continuity and stability of the filling process.

[0016] Furthermore, the inner support mechanism includes an inner support ring and a fixed ring. The inner support ring is fixedly connected to the discharge pipe, and the material of the inner support ring is rubber.

[0017] By adopting the above technical solution, a stable and reliable internal support force is provided for the feeding port of the outer valve bag. The inner support ring is made of rubber, and this choice is of great significance. The flexibility and stretchability of rubber enable the inner support ring to adapt to the feeding ports of outer valve bags of different sizes and closely fit on the inner wall of the outer valve bag, effectively preventing powder from spilling out through the gap between the feeding port and the discharging pipe.

[0018] Furthermore, a pressing groove is formed on the inner side of the inner support ring, and a pressing ring is arranged inside the pressing groove. The pressing groove and the pressing ring are in an inclined surface abutting structure.

[0019] By adopting the above technical solution, the inclined surface abutting structure enables a closer and more stable connection to be formed when the two are in contact. This structure increases the contact area and improves the supporting force and stability of the pressing ring on the inner support ring.

[0020] Furthermore, a plurality of pneumatic push rods are arranged between the fixed ring and the pressing ring, and the plurality of pneumatic push rods are arranged in an equidistant annular pattern along the central axis of the discharging pipe.

[0021] By adopting the above technical solution, powerful power support is provided for the inner support mechanism. These pneumatic push rods are arranged in an equidistant annular pattern along the central axis of the discharging pipe, ensuring uniform distribution of the thrust force, so that the pressing ring can stably and powerfully press the inner support ring.

[0022] Furthermore, an electric control box and a feeding funnel are arranged at the top of the device main body.

[0023] By adopting the above technical solution, the electric control box is responsible for receiving and processing signals sent by various sensors and controlling each actuator according to a preset program, such as pneumatic push rods, motors, etc., so as to realize the automated operation of the entire powder filling and packaging process. This not only greatly improves production efficiency, reduces labor intensity, but also helps to improve the accuracy and consistency of the packaging process.

[0024] Furthermore, the infrared ranging sensor, the first pneumatic push rod, the second pneumatic push rod and the pneumatic push rods are all electrically connected to an external power supply through a control center.

[0025] By adopting the above technical solution, centralized power supply and control of these components are realized. The control center can accurately control the power on / off and working state of each component according to actual needs, ensuring the coordinated and efficient operation of the entire packaging system.

[0026] To sum up, the main beneficial effects of the present utility model are as follows:

[0027] 1. Through the receiving plate, pressing mechanism and infrared distance sensor, the infrared distance sensor measures the distance between the support frame and the main body of the device in real time. When the port of the discharge pipe is vertically opposite to the receiving plate, the infrared distance sensor quickly transmits this monitoring signal to the electric control box. At the same time, after receiving the signal, the control center in the electric control box immediately controls the second air push rod to work. The second air push rod strikes the discharge pipe, and the vibration effect generated by it causes the residual calcium carbonate powder at the port of the discharge pipe to fall on the receiving plate. Since the receiving plate is designed as an inclined structure, the fallen calcium carbonate powder will slide down along the inclined plane into the receiving basin, thus avoiding the powder from falling on the ground and effectively reducing the cleaning burden of the calcium carbonate powder;

[0028] 2. By setting the inner support mechanism, multiple pneumatic push rods are started to push the pressing ring to move. During this process, the pressing force of the pressing ring against the pressing groove gradually increases, prompting the rubber inner support ring to expand outward. The outward expansion of the inner support ring effectively performs an inner support operation on the outer valve pocket, ensuring that it is stably sleeved on the discharge pipe. When filling calcium carbonate powder, the inner support mechanism plays an important role. By reducing the gap between the outer valve pocket and the outer wall of the discharge pipe, the inner support mechanism significantly reduces the possibility of powder spilling from the gap, not only improving the accuracy of powder filling but also effectively reducing the dust pollution degree of the operation environment. The reduction of dust pollution not only helps to maintain the cleanliness and hygiene of the operation environment but also reduces the health risks of the staff, improving the safety and efficiency of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0030] Figure 2 is a front view structural schematic diagram of the present utility model;

[0031] Figure 3 is a side view structural schematic diagram of the bag-pushing assembly of the present utility model;

[0032] Figure 4 is a cross-sectional structural schematic diagram of the inner support mechanism of the present utility model.

[0033] In the figure: 1. Main body of the device; 2. Electric control box; 3. Bag-pushing assembly; 301. Mounting plate; 302. Slide rail; 303. Slide plate; 304. Support frame; 305. Baffle; 306. Receiving plate; 307. Limiting plate; 308. First air push rod; 309. Receiving basin; 4. Feeding funnel; 5. Discharge pipe; 6. Pressing mechanism; 601. Mounting frame; 602. Second air push rod; 7. Inner support mechanism; 701. Inner support ring; 702. Pressing groove; 703. Pressing ring; 704. Fixed ring; 705. Pneumatic push rod; 8. Infrared distance sensor. Detailed implementation mode

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and cannot be understood as a limitation to the present utility model.

[0035] The following will describe the embodiments according to the overall structure of the present utility model.

[0036] Embodiment 1:

[0037] A weighing device for the production and packaging of calcium carbonate powder, as Figures 1-4 shown, includes a device main body 1 and a bag pushing assembly 3. The bag pushing assembly 3 includes a mounting plate 301. The top of the mounting plate 301 is slidably connected with a support frame 304 through a slide rail 302 and a slide plate 303. One side of the support frame 304 is provided with a receiving plate 306. One side of the receiving plate 306 is provided with a limiting plate 307. One side of the bottom of the receiving plate 306 is provided with a receiving basin 309;

[0038] The front surface of the device main body 1 is provided with a discharge pipe 5. Above the discharge pipe 5 is provided a pressing mechanism 6. The pressing mechanism 6 includes a mounting frame 601. A second air push rod 602 is installed on the mounting frame 601. One side of the surface of the device main body 1 is provided with an infrared ranging sensor 8. The infrared ranging sensor 8 continuously monitors the distance between the support frame 304 and the device main body 1. When a vertical relative position relationship is formed between the port of the discharge pipe 5 and the receiving plate 306, the infrared ranging sensor 8 immediately transmits this monitoring signal to the electric control box 2. The electric control box 2, as the control center of the entire system, quickly makes a response after receiving the signal and controls the second air push rod 602 to work. The second air push rod 602 precisely strikes the discharge pipe 5. By using the vibration effect of the strike, the calcium carbonate powder remaining at the port of the discharge pipe 5 is vibrated and falls on the receiving plate 306. This not only avoids the pollution and waste caused by the calcium carbonate powder falling on the ground, but also significantly reduces the burden of cleaning the powder, improving the overall work efficiency and cleanliness.

[0039] Refer to Figure 1 、 Figure 2, the pressing mechanism 6 is used to abut against the discharge pipe 5 and the outer valve bag. By closely abutting against the discharge pipe 5 and the outer valve bag, the pressing mechanism 6 ensures a firm connection between the two, which effectively prevents leakage or spillage that may occur during the filling process of calcium carbonate powder. At the same time, due to the presence of the pressing mechanism 6, the outer valve bag can maintain a stable shape and position during the filling process, which helps to ensure the uniform distribution and accurate measurement of the powder. Therefore, the pressing mechanism 6 not only improves the accuracy and efficiency of the packaging operation, but also significantly reduces the dust pollution level of the operating environment, creating a cleaner and safer working environment for the staff.

[0040] Refer to Figure 1 , Figure 2 , Figure 3 , both the support frame 304 and the receiving plate 306 are inclined structures for guiding the outer valve bag and calcium carbonate powder, enabling the outer valve bag to slide smoothly along the inclined plane, effectively guiding the moving direction of the outer valve bag, avoiding jams or deviations from the track that may occur during the bag pushing process, improving the fluency and efficiency of the packaging operation. At the same time, when the calcium carbonate powder is filled from the discharge pipe 5 into the outer valve bag, the inclined receiving plate 306 can ensure that the dropped powder accurately falls into the receiving basin 309 and prevent the powder from scattering or accumulating in inappropriate positions during the receiving process. This not only ensures the full utilization of the powder, but also reduces the extra work of cleaning up the scattered powder and lowers the labor intensity of the operator.

[0041] Refer to Figure 1 , Figure 2 , Figure 3 , a first air push rod 308 is arranged inside the support frame 304, and the telescopic end of the first air push rod 308 is fixedly connected to the device main body 1. The first air push rod 308 provides strong power support for the device, and its fixed connection with the device main body 1 ensures the stability and reliability of the bag pushing operation. At the same time, it enables the support frame 304 to perform smooth and accurate displacement along the slide rail 302 and the slide plate 303 under the push of the first air push rod 308. This not only improves the automation level of the packaging operation, but also effectively reduces the difficulty and labor intensity of manual operation.

[0042] Embodiment Two:

[0043] Refer to Figure 1 , Figure 2 , Figure 4, an inner support mechanism 7 is arranged on the outer side of the discharge pipe 5. The inner support mechanism 7 is used to internally support the feed port of the outer valve bag. The setting of the inner support mechanism 7 plays a crucial role in internally supporting the feed port of the outer valve bag. During the pouring process of calcium carbonate powder, the outer valve bag needs to maintain a certain opening size to ensure the smooth inflow of the powder. The inner support mechanism 7 can effectively support the feed port of the outer valve bag, ensuring the continuity and stability of the pouring process. At the same time, the inner support mechanism 7 can also reduce the spillage of the powder during the pouring process. Since there is a certain gap between the outer valve bag and the discharge pipe 5, without the support of the inner support mechanism 7, the powder is likely to leak out from these gaps, causing waste and environmental pollution.

[0044] Refer to Figure 4 , the inner support mechanism 7 includes an inner support ring 701 and a fixing ring 704. The inner support ring 701 is fixedly connected to the discharge pipe 5. The material of the inner support ring 701 is rubber, which provides a stable and reliable internal support force for the feed port of the outer valve bag. The inner support ring 701 is made of rubber, and this choice is of great significance. The flexibility and stretchability of rubber enable the inner support ring 701 to adapt to the feed ports of outer valve bags of different sizes and closely fit on the inner wall of the outer valve bag, effectively preventing the powder from spilling out from the gap between the feed port and the discharge pipe. At the same time, the rubber material also has good wear resistance and corrosion resistance, which can extend the service life of the inner support ring 701, reduce the frequency of replacement and maintenance, and further improve production efficiency and economic benefits.

[0045] Refer to Figure 4 , a pressing groove 702 is formed on the inner side of the inner support ring 701, and a pressing ring 703 is arranged inside the pressing groove 702. The pressing groove 702 and the pressing ring 703 are in an inclined surface abutting structure. The inclined surface abutting structure enables them to form a tighter and more stable connection when contacting. This structure increases the contact area, improves the support force and stability of the pressing ring 703 on the inner support ring 701. At the same time, the inclined surface abutting structure also helps to disperse and transmit the pressure and impact force generated during the pouring process of the outer valve bag. Using the inclined surface structure, the inner support ring 701 can be more conveniently used for internal support operation with the outer valve bag.

[0046] Refer to Figure 4, there are multiple pneumatic push rods 705 arranged between the fixed ring 704 and the pressing ring 703. The multiple pneumatic push rods 705 are arranged in an equidistant circular pattern along the central axis of the discharge pipe 5, providing strong power support for the inner support mechanism 7. These pneumatic push rods 705 are arranged in an equidistant circular pattern along the central axis of the discharge pipe 5, ensuring uniform distribution of the thrust, enabling the pressing ring 703 to press against the inner support ring 701 stably and forcefully. At the same time, the multiple pneumatic push rods 705 also help to improve the overall stability and anti-deformation ability of the inner support mechanism 7. When the powder flows into the outer valve bag through the discharge pipe 5, it will generate a certain pressure on the inner support ring 701. The uniform support of the multiple pneumatic push rods 705 can effectively resist this pressure, preventing the inner support ring 701 from deforming or shifting, thus ensuring the smooth progress of the perfusion process.

[0047] Refer to Figure 1 、 Figure 2 , at the top of the device main body 1, there is an electric control box 2 and a feed hopper 4. The electric control box 2 is responsible for receiving and processing signals sent by various sensors, and controlling each actuator according to a preset program, such as pneumatic push rods, motors, etc., so as to realize the automated operation of the entire powder perfusion and packaging process. This not only greatly improves production efficiency, reduces labor intensity, but also helps to improve the accuracy and consistency of the packaging process. At the same time, the setting of the feed hopper 4 facilitates the input of powder raw materials. It is located at the top of the device main body 1, and the operator can easily pour the powder raw materials into the hopper, ensuring that the powder raw materials can smoothly slide down to the lower storage bin or mixer.

[0048] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 , the infrared distance sensor 8, the first pneumatic push rod 308, the second pneumatic push rod 602, and the pneumatic push rod 705 are all electrically connected to an external power supply through the control center, realizing centralized power supply and control of these components. The control center can accurately control the power on / off and working state of each component according to actual needs, ensuring the coordinated and efficient operation of the entire packaging system. At the same time, this electrical connection method also has the advantages of safety, reliability, easy maintenance and expansion. Through reasonable circuit design and protection measures, equipment damage or safety accidents caused by power fluctuations or short circuits can be avoided. In addition, when adding or replacing components, only the corresponding circuit needs to be adjusted, without large-scale modification of the entire system, thus reducing the maintenance cost and upgrade difficulty.

[0049] The implementation principle of the present utility model is as follows: First, the outer valve pocket is sleeved outside the discharge pipe 5. Subsequently, the second air push rod 602 is used to abut against the outer valve pocket, fix the position of the outer valve pocket, and perform the filling operation. After the filling is completed, the first air push rod 308 pushes the support frame 304 and moves the position through the slide rail 302 and the slide plate 303 until the discharge pipe 5 is pulled out of the outer valve pocket. At this time, the infrared distance measuring sensor 8 is used to measure the distance between the support frame 304 and the device main body 1. When the port of the discharge pipe 5 is vertically opposite to the receiving plate 306, the monitoring signal is transmitted to the electric control box 2, and the control center is used to control the second air push rod 602 to work. The second air push rod 602 strikes the discharge pipe 5, and the residual calcium carbonate powder at the port of the discharge pipe 5 falls on the receiving plate 306 by using the vibration of the strike. Then, by using the inclined structure of the receiving plate 306, this part of the calcium carbonate powder slides into the receiving basin 309, preventing this part of the calcium carbonate powder from falling on the ground and reducing the cleaning burden of the calcium carbonate powder.

[0050] When the outer valve pocket is sleeved outside the discharge pipe 5, a plurality of pneumatic push rods 705 are used to push the pressure ring 703 to move. At this time, the abutting force of the pressure ring 703 against the pressure groove 702 gradually increases, prompting the rubber inner support ring 701 to expand outward and perform an inner support operation on the outer valve pocket. When filling calcium carbonate powder, the inner support mechanism 7 can reduce the gap between the outer valve pocket and the outer wall of the discharge pipe 5, thereby reducing the degree of overflow of the internal powder between the outer valve pocket and the discharge pipe 5 during the filling process, so as to reduce the dust pollution degree of the operating environment.

[0051] Parts not involved in the present utility model are the same as or can be implemented by using the prior art, and will not be elaborated here.

[0052] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A weighing device for production and packaging of calcium carbonate powder, characterized in that: The invention comprises a device body (1) and a bag pushing assembly (3), wherein the bag pushing assembly (3) comprises a mounting plate (301), the top of the mounting plate (301) is slidably connected to a support frame (304) via a slide rail (302) and a slide plate (303), a receiving plate (306) is arranged on one side of the support frame (304), a limiting plate (307) is arranged on one side of the receiving plate (306), and a receiving basin (309) is arranged on one side of the bottom of the receiving plate (306); A discharge pipe (5) is arranged on the front surface of the device body (1), a pressing mechanism (6) is arranged above the discharge pipe (5), the pressing mechanism (6) comprises a mounting frame (601), a second air push rod (602) is mounted on the mounting frame (601), and an infrared ranging sensor (8) is arranged on one side of the surface of the device body (1).

2. The weighing device for producing and packaging calcium carbonate powder according to claim 1, characterized in that: The pressing mechanism (6) is used for abutting against the discharge pipe (5) and the outer valve bag, and baffles (305) are provided on both sides of the top of the support frame (304).

3. The weighing device for producing and packaging calcium carbonate powder according to claim 1, characterized in that: The support frame (304) and the receiving plate (306) are both oblique structures, and are used to guide the outer valve bag and the calcium carbonate powder.

4. The weighing device for producing and packaging calcium carbonate powder according to claim 1, characterized in that: A first air push rod (308) is arranged on the inner side of the support frame (304), and the telescopic end of the first air push rod (308) is fixedly connected to the device body (1).

5. The weighing device for production and packaging of calcium carbonate powder according to claim 1, characterized in that: An inner supporting mechanism (7) is arranged on the outer side of the discharge pipe (5), and the inner supporting mechanism (7) is used to internally support the feed port of the outer valve bag.

6. The weighing device for producing and packaging calcium carbonate powder according to claim 5, characterized in that: The inner support mechanism (7) comprises an inner support ring (701) and a fixed ring (704); the inner support ring (701) is fixedly connected to the discharge pipe (5); and the material of the inner support ring (701) is rubber.

7. The weighing device for producing and packaging calcium carbonate powder according to claim 6, characterized in that: A pressing groove (702) is provided on the inner side of the inner support ring (701), a pressing ring (703) is arranged inside the pressing groove (702), and the pressing groove (702) and the pressing ring (703) are in an inclined surface abutment structure.

8. The weighing device for producing and packaging calcium carbonate powder according to claim 6, characterized in that: A plurality of pneumatic push rods (705) are arranged between the fixing ring (704) and the pressing ring (703), and the plurality of pneumatic push rods (705) are arranged in an equidistant ring shape along the central axis of the discharge pipe (5).

9. The weighing device for producing and packaging calcium carbonate powder according to claim 1, characterized in that: An electric control box (2) and a feeding funnel (4) are arranged on the top of the device body (1).

10. The weighing device for production and packaging of calcium carbonate powder according to claim 1, characterized in that: The infrared distance measuring sensor (8), the first air push rod (308), the second air push rod (602) and the pneumatic push rod (705) are all electrically connected to an external power supply through a control center.