Quantitative discharging device for flame retardant

Abstract

The application discloses a quantitative discharging device for flame retardant, and relates to the technical field of discharging devices, which comprises a conveying assembly for outputting powder-shaped flame retardant, wherein the conveying assembly comprises a discharging pipe, and the outer surface of the conveying assembly is provided with a measuring assembly for detecting whether the material is uniformly conveyed. The quantitative discharging device for flame retardant has the advantages that when the material enters the inside of the discharging pipe, one of the limiting racks is inserted into the inside of the discharging pipe along the inside of the material taking bin to take sample, the flame retardant is extracted into the inside of the discharging pipe within a specified unit time, then the flame retardant is moved out, and the above-mentioned action is repeated until the sampling bins in the plurality of limiting racks are all filled with the material, then the limiting rack loaded with the sample is rotated to the top of the electronic measuring balance to measure the sample, and the measuring result is transmitted to the controller.

Description

Technical Field

[0001] This invention relates to the field of feeding device technology, specifically to a quantitative feeding device for flame retardants. Background Technology

[0002] Flame retardants are substances that can prevent combustion, reduce the combustion rate, and increase the ignition point. They play a key role in many fields and are widely used in chemical building materials, electronics, transportation, and aerospace industries. The quantitative feeding device for flame retardants is an automated device specifically designed to precisely control the amount of flame retardant added. Its core function is to stably and uniformly deliver the flame retardant to the downstream production process according to preset weight, volume, and flow parameters, ensuring that the flame retardant performance of the final product meets the standards and that batches are highly consistent, achieving long-term stable and high-precision quantitative feeding.

[0003] In existing methods, ensuring uniform and quantitative delivery of powdered flame retardants using feeding devices is crucial for guaranteeing the quality, production efficiency, and safety and environmental protection of downstream flame retardant products. By stably controlling the addition ratio of flame retardants, it is possible to ensure that the flame retardant components of each batch of products are evenly distributed, avoiding situations where some batches fail to retard due to insufficient addition, while others become brittle due to excessive addition, thus achieving batch-to-batch consistency in product quality. However, most existing quantitative feeding devices for flame retardants, when conveying powdered flame retardants, suffer from poor flowability due to the strong attraction between the powder particles, which easily agglomerate into pseudo-particles and cause blockages in the pipeline during delivery. The flow rate fluctuates, and most existing feeding devices cannot capture flow fluctuations in real time, ultimately making it difficult to achieve uniform and quantitative delivery.

[0004] Therefore, we propose a quantitative feeding device for flame retardants to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a quantitative feeding device for flame retardants, so as to solve the problem that most feeding devices mentioned in the background art cannot capture flow fluctuations in real time, which ultimately makes it difficult to achieve uniform quantitative feeding.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a quantitative feeding device for flame retardants, comprising a conveying assembly for outputting powdered flame retardants, the conveying assembly including a feeding pipe, and a measuring assembly for detecting whether the material is conveyed uniformly on the outer surface of the conveying assembly, the measuring assembly including multiple hollow positioning tubes and an electronic measuring balance for weighing extracted flame retardant samples, each of the multiple hollow positioning tubes having an extension rod movably embedded in its inner wall, each of the multiple hollow positioning tubes having two springs on its inner wall, one end of each of the multiple extension rods being fixedly connected to a limiting frame, and each of the multiple limiting frames having a sampling chamber coupled inside for carrying flame retardant samples, the outer surface of the conveying assembly also having a protective assembly, the protective assembly including a sampling chamber, the inner wall of the sampling chamber being slidably connected to a positioning plate, the sampling chamber being driven by the extension rods to enter the interior of the sampling chamber, pushing the positioning plate upward until the sampling chamber is inserted into the interior of the feeding pipe for sampling.

[0007] Preferably, the measuring component further includes a support frame, a pressure-resistant frame is fixedly installed on the top of the support frame near one side edge, a servo motor is fixedly installed on the top of the pressure-resistant frame by screws, a connecting rod is fixedly connected to the output end of the servo motor, a drive gear is fixedly sleeved on the outer surface of the connecting rod, a driven gear is rotatably connected inside the support frame, and a positioning frame is fixedly installed on the top of the driven gear.

[0008] Preferably, the inner walls of the plurality of hollow positioning tubes are slidably connected with push plates, the inner walls of the plurality of sampling chambers are movably embedded with limiting tubes, the outer surfaces of the plurality of movable limiting tubes are fixedly fitted with baffles, the inner walls of the plurality of sampling chambers are provided with coil springs, the tops of the plurality of limiting frames are provided with electromagnets near the two side edges, the outer surfaces of the plurality of sampling chambers are fixedly installed with iron plates, the inner walls of the plurality of sampling chambers are provided with hydraulic rods near the center, and one end of the plurality of hydraulic rods is fixedly installed with a push block.

[0009] Preferably, the outer surface of the electronic measuring balance is fixedly connected to the outer surface of the support frame by screws, the bottom end of the connecting rod moves through the pressure-resistant frame to the outside of the drive gear, the bottom end of the connecting rod is movably embedded in the inner bottom surface of the pressure-resistant frame, and the drive gear is located inside the pressure-resistant frame.

[0010] Preferably, the outer surface of the driving gear meshes with the outer surface of the driven gear, the outer surfaces of the plurality of hollow positioning tubes are fixedly connected to the outer surface of the positioning frame, each pair of the plurality of springs forms a group, one end of each group of springs is fixedly connected to the outer surface of the plurality of push plates, the other end of each group of springs is fixedly connected to the inner wall of the plurality of hollow positioning tubes, and the outer surfaces of the plurality of push plates are fixedly connected to one end of the plurality of extension rods.

[0011] Preferably, one end of each of the multiple extension rods extends movably through the outside of multiple hollow positioning tubes, and both ends of each of the multiple limiting tubes are fixedly extended through the opposite sides of multiple baffles. Each pair of connected coil springs forms a group, and both ends of each of the multiple limiting tubes extend movably through the outside of multiple groups of coil springs. The outer surfaces of each of the multiple limiting tubes are fixedly connected to one end of each group of coil springs.

[0012] Preferably, each pair of adjacent iron plates forms a group, the outer surface of each group of iron plates slides against the inner wall of the limiting frame, the outer surface of each push block slides against the inner wall of each sampling chamber, the top of the support frame is fixed with an installation column, the inner wall of the installation column is provided with an electric telescopic rod, and the outer surface of each hollow positioning tube is in contact with the outer surface of the installation column.

[0013] Preferably, the outer surface of the material receiving bin is fixedly connected to the inner wall of the material feeding pipe, and the inner wall of the material receiving bin is provided with an elastic element through an auxiliary rod. The top end of the elastic element is fixedly connected to the bottom of the auxiliary rod, and the bottom end of the elastic element is fixedly connected to the top of the positioning plate.

[0014] Preferably, the conveying assembly further includes a feeding bin, a controller is provided on the outer surface of the feeding bin near the bottom, a feeding pipe is fixedly connected to the top of the feeding bin, a feeding bin is fixedly connected to the bottom of the feeding bin, a drive motor is provided on the outer surface of the feeding bin near the bottom via an auxiliary frame, a drive pipe is fixedly connected to the output end of the drive motor, the two ends of the drive pipe respectively extend through opposite sides of the auxiliary frame, a drive gear is fixedly sleeved on the outer surface of the drive pipe near the center, and two transmission gears are meshed on the outer surface of the drive gear.

[0015] Preferably, a spiral conveying rod is fixedly embedded in the inner wall of each of the two transmission gears, and the two ends of the two spiral conveying rods respectively extend to the opposite exterior of the feeding bin. A stirring mechanism is meshed between the outer surfaces of the two transmission gears, and the stirring rod part of the stirring mechanism is located inside the feeding bin. A vibration pump is installed on the outer surface of the feeding bin near the top.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. After the material enters the feeding pipe, one of the limiting frames is inserted into the feeding pipe along the inside of the sampling bin to take a sample. The flame retardant is extracted from the inside of the feeding pipe within a specified unit time. Then, it is removed and the above action is repeated until the sampling bins in multiple limiting frames are full of material. Then, the limiting frame containing the sample is rotated to the top of the electronic measuring balance to measure it and transmit the measurement result to the controller. Through the cooperation between the measuring component and the protective component, the feeding device can monitor in real time whether the material is in a uniform feeding state when conveying powdered flame retardant. This solves the problem that most feeding devices in the existing technology cannot capture the flow fluctuation in real time, which ultimately makes it difficult to achieve uniform quantitative distribution.

[0018] 2. When powdered flame retardant needs to be fed, the powdered flame retardant material is first conveyed into the feeding hopper. Then, the drive motor is started to drive the two screw conveyors and the stirring mechanism to rotate, thereby stirring and conveying the powdered flame retardant that has entered the feeding hopper. A vibration pump is used to prevent the flame retardant in the feeding hopper from sticking to the inner wall. After the two screw conveyors convey the flame retardant into the feeding pipe, the flame retardant can be conveyed outward along the inner wall of the feeding pipe to the downstream processing equipment. Through the action of the conveying components, one drive device can drive the stirring equipment and the conveying equipment to operate simultaneously, saving resources.

[0019] 3. After the weight of the material in multiple sampling chambers has been measured, the multiple sampling chambers are reinserted into the feed pipe to re-transport the extracted samples back into the feed pipe. By recovering the flame retardant after testing, resources are saved. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a quantitative feeding device for flame retardants according to the present invention;

[0021] Figure 2 This is a side perspective view of a quantitative feeding device for flame retardants according to the present invention;

[0022] Figure 3 This is a sectional perspective view of the feeding hopper portion of a quantitative feeding device for flame retardants according to the present invention;

[0023] Figure 4 This is a sectional perspective view of the protective component of a quantitative feeding device for flame retardants according to the present invention.

[0024] Figure 5 This is a perspective view of the measuring component of a quantitative feeding device for flame retardants according to the present invention;

[0025] Figure 6 This is a perspective view of the driven gear portion of a quantitative feeding device for flame retardants according to the present invention;

[0026] Figure 7 This is a sectional perspective view of the sampling chamber portion of a quantitative feeding device for flame retardants according to the present invention;

[0027] Figure 8 This is a perspective view of the baffle portion of a quantitative feeding device for flame retardants according to the present invention.

[0028] Figure 9 This is a sectional perspective view of the limiting frame portion of a quantitative feeding device for flame retardants according to the present invention;

[0029] Figure 10 This is a perspective cross-sectional view of the mounting column portion of a quantitative feeding device for flame retardants according to the present invention.

[0030] In the picture:

[0031] 1. Conveying assembly; 101. Feeding bin; 102. Feed pipe; 103. Drive motor; 104. Drive pipe; 105. Drive gear; 106. Transmission gear; 107. Screw conveyor; 108. Feeding bin; 109. Feeding pipe; 110. Mixing mechanism; 111. Vibration pump; 2. Controller; 3. Protective assembly; 301. Removal bin; 302. Elastic element; 303. Positioning plate; 4. Measuring assembly; 401. Support frame; 402. Electronic measuring balance; 403. Compression frame; 404. Servo motor; 405. Connecting rod; 406. Drive gear; 407. Driven gear; 408. Positioning frame; 409. Hollow positioning tube; 410. Push plate; 411. Spring; 412. Extension rod; 413. Limiting frame; 414. Sampling chamber; 415. Limiting tube; 416. Baffle; 417. Coil spring; 418. Electromagnet; 419. Iron plate; 420. Push block; 421. Hydraulic rod; 5. Mounting column; 6. Electric telescopic rod. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figures 1-3The present invention provides a technical solution: a quantitative feeding device for flame retardants, wherein the conveying assembly 1 further includes a feeding bin 101, a controller 2 is disposed on the outer surface of the feeding bin 101 near the bottom, a feeding pipe 102 is fixedly connected to the top of the feeding bin 101, a feeding bin 108 is fixedly connected to the bottom of the feeding bin 101, a drive motor 103 is disposed on the outer surface of the feeding bin 108 near the bottom via an auxiliary frame, a drive pipe 104 is fixedly connected to the output end of the drive motor 103, and the two ends of the drive pipe 104 respectively extend movably through the opposite sides of the auxiliary frame. A drive gear 105 is fixedly fitted on the outer surface of 4 near the center. Two transmission gears 106 are meshed on the outer surface of the drive gear 105. A spiral conveying rod 107 is fixedly embedded in the inner wall of each of the two transmission gears 106. The two ends of the two spiral conveying rods 107 respectively extend to the opposite sides of the feeding bin 108. A stirring mechanism 110 is meshed between the outer surfaces of the two transmission gears 106. The stirring rod part of the stirring mechanism 110 is located inside the feeding bin 101. A vibration pump 111 is installed on the outer surface of the feeding bin 101 near the top.

[0034] In this embodiment, when powdered flame retardant needs to be fed, the external conveying equipment is first fixedly connected to the feed pipe 102 via a sealing flange, so that the powdered material is conveyed to the inside of the feed hopper 101 through the external conveying equipment. Then, the drive motor 103 can be started, which drives the drive pipe 104 to rotate, thereby driving the drive gear 105 to rotate, which in turn drives the two transmission gears 106 to rotate, thereby driving the two spiral conveying rods 107 to rotate. At the same time, the rotation of the two transmission gears 106 also drives the stirring mechanism 110 to rotate. Figure 3As shown, the stirring mechanism 110 consists of stirring rods, a conveyor belt, and transmission gears. The two stirring rods rotate under the drive of two transmission gears 106, thus stirring the powdered flame retardant entering the feeding hopper 101 and preventing it from agglomerating. Simultaneously, the controller 2 activates the vibration pump 111 to prevent the flame retardant in the feeding hopper 101 from adhering to the inner wall. The vibration pump 111 utilizes a vibrating motor to generate periodic mechanical vibration, which is transmitted to the feeding hopper 101 through an elastic element. This vibration breaks up any agglomerated material and causes it to slide continuously in a preset direction, ultimately achieving uniform material conveying. The broken flame retardant is then conveyed through two spiral conveyor rods 110... The rotation of 07 causes the flame retardant to move along the inner wall of the feeding hopper 108 towards the feed pipe 109. During the rotation of the two screw conveyors 107, the screw teeth of one screw scrape the screw groove of the other screw, forcibly pushing the material into the screw groove to ensure 100% filling of the screw groove. Even if the material discharge from the hopper fluctuates slightly, the meshing structure of the twin screws can maintain a stable screw groove filling rate by mutually supplementing the material. After the two screw conveyors 107 deliver the flame retardant to the feed pipe 109, the flame retardant can be transported outward along the inner wall of the feed pipe 109 to the downstream processing equipment. Through the action of the conveying component 1, one drive device can simultaneously drive the mixing equipment and the conveying equipment, saving resources.

[0035] like Figures 1-10As shown, a quantitative feeding device for flame retardants includes a conveying assembly 1 for outputting powdered flame retardant. The conveying assembly 1 includes a feeding pipe 109. A measuring assembly 4 for detecting whether the material is conveyed uniformly is provided on the outer surface of the conveying assembly 1. The measuring assembly 4 includes multiple hollow positioning tubes 409 and an electronic measuring balance 402 for weighing extracted flame retardant samples. Extension rods 412 are movably embedded in the inner walls of the multiple hollow positioning tubes 409. Two springs 411 are provided on the inner walls of the multiple hollow positioning tubes 409. One end of each of the multiple extension rods 412 is fixedly connected to a limit frame 413. A sampling chamber 414 for carrying flame retardant samples is coupled inside each of the multiple limit frames 413. A protective assembly 3 is also provided on the outer surface of the conveying assembly 1. The protective component 3 includes a material receiving bin 301, with a positioning plate 303 slidably connected to the inner wall of the material receiving bin 301. A sampling bin 414, driven by an extension rod 412, enters the material receiving bin 301, pushing the positioning plate 303 upwards until the sampling bin 414 is inserted into the discharge pipe 109 for sampling. The measuring component 4 also includes a support frame 401, with a pressure-resistant frame 403 fixedly installed on the top of the support frame 401 near one edge. A servo motor 404 is fixedly installed on the top of the pressure-resistant frame 403 by screws. A connecting rod 405 is fixedly connected to the output end of the servo motor 404. A drive gear 406 is fixedly sleeved on the outer surface of the connecting rod 405. A driven gear 407 is rotatably connected inside the support frame 401. A positioning frame 408 is fixedly installed on the top of 407. Push plates 410 are slidably connected to the inner walls of multiple hollow positioning tubes 409. Limiting tubes 415 are movably embedded in the inner walls of multiple sampling chambers 414. Baffles 416 are fixedly sleeved on the outer surfaces of multiple movable limiting tubes 415. Coil springs 417 are provided on the opposite inner walls of multiple sampling chambers 414. Electromagnets 418 are provided near the two side edges of the top of multiple limiting frames 413. Iron plates 419 are fixedly installed on the opposite outer surfaces of multiple sampling chambers 414. Hydraulic rods 421 are provided near the center of the inner walls of multiple sampling chambers 414. Push blocks 420 are fixedly installed at one end of multiple hydraulic rods 421. The outer surface of the electronic measuring balance 402 is fixed to the outer surface of the support frame 401 by screws. The connecting rod 405 is connected in a manner where its bottom end sequentially passes through the pressure-resistant frame 403 to the outside of the drive gear 406. The bottom end of the connecting rod 405 is movably embedded in the inner bottom surface of the pressure-resistant frame 403. The drive gear 406 is located inside the pressure-resistant frame 403, and its outer surface meshes with the outer surface of the driven gear 407. The outer surfaces of multiple hollow positioning tubes 409 are fixedly connected to the outer surface of the positioning frame 408. Multiple springs 411 are grouped in pairs, with one end of each group of springs 411 fixedly connected to the outer surface of multiple push plates 410, and the other end of each group of springs 411 fixedly connected to the inner wall of multiple hollow positioning tubes 409. The outer surfaces of multiple push plates 410 are fixedly connected to one end of multiple extension rods 412.One end of each of the multiple extension rods 412 extends movably through the outside of multiple hollow positioning tubes 409. Both ends of each of the multiple limiting tubes 415 are fixedly extended through the opposite sides of multiple baffles 416. Each pair of connected coil springs 417 forms a group, and both ends of the multiple limiting tubes 415 extend movably through the outside of multiple groups of coil springs 417. The outer surfaces of the multiple limiting tubes 415 are fixedly connected to one end of each group of coil springs 417. Each pair of adjacent iron plates 419 forms a group, and the outer surface of each group of iron plates 419 slides against the inner wall of the limiting frame 413. Multiple push blocks 420 have their outer surfaces sliding against the inner walls of multiple sampling chambers 414. A mounting column 5 is fixed to the top of the support frame 401, and an electric telescopic rod 6 is installed on the inner wall of the mounting column 5. The outer surfaces of multiple hollow positioning tubes 409 are in contact with the outer surfaces of the mounting columns 5. The outer surface of the material collection chamber 301 is fixedly connected to the inner wall of the discharge pipe 109. An elastic element 302 is installed on the inner wall of the material collection chamber 301 via an auxiliary rod. The top end of the elastic element 302 is fixedly connected to the bottom of the auxiliary rod, and the bottom end of the elastic element 302 is fixedly connected to the top of the positioning plate 303.

[0036] In this embodiment, to ensure that the amount of material conveyed into the feeding pipe 109 is the same per unit time, the electric telescopic rod 6 is activated after the material enters the feeding pipe 109, extending it and pushing the corresponding push plate 410 towards the material collection bin 301. This causes the two springs 411 connected to it to extend, thereby moving the extension rod 412 forward and pushing the limiting frame 413 towards the material collection bin 301. In this embodiment, combined with... Figure 4 and Figure 7As shown, the cross-section of the limiting frame 413 corresponds to the cross-section of the positioning plate 303. When the limiting frame 413 enters the material collection bin 301 under the push of the extension rod 412, it exerts an upward squeezing force on the positioning plate 303, causing the positioning plate 303 to move upward along the inner wall of the material collection bin 301. This causes the elastic element 302 to be compressed and shortened. At the same time, when the limiting frame 413 has completely moved along the inner wall of the material collection bin 301 into the inside of the discharge pipe 109, the top of the limiting frame 413 just contacts the bottom edge of the positioning plate 303. At this time, the sampling bin 414 can extract flame retardant from the inside of the discharge pipe 109 within a specified unit time through the action of the controller 2, and then it can be restarted. The electric telescopic rod 6 is shortened, so that the corresponding push plate 410 is no longer compressed. This causes the push plate 410 to move closer to the mounting post 5 under the elastic action of the two corresponding springs 411, which in turn drives the extension rod 412 to move backward. This causes the sampling chamber 414 to move backward until it is completely removed from the interior of the discharge pipe 109 and the sampling chamber 301, thus completing the sampling within the specified unit time. Furthermore, once the sampling chamber 414 is removed from the interior of the sampling chamber 301, it no longer compresses the positioning plate 303. At this point, the positioning plate 303 will move downward under the elastic action of the elastic element 302, sealing the connection between the discharge pipe 109 and the sampling chamber 301. Then, the servo motor 404 can be started to drive... The rotating connecting rod 405 drives the driving gear 406 to rotate, which in turn drives the driven gear 407 to rotate, and finally drives the positioning frame 408 to rotate, causing multiple limit frames 413 to rotate until another unloaded limit frame 413 rotates to the position corresponding to the material picking bin 301. The above operation can then be repeated to move the limit frame 413 into the inside of the feeding tube 109 for sampling. When sampling is complete, the servo motor 404 is started again to drive multiple limit frames 413 to rotate until the limit frame 413 loaded with the sample rotates to the top of the electronic measuring balance 402. The core of the electronic measuring balance 402 is to convert the gravity of the object into a calculable electrical signal, which is then processed by the circuit and calibrated by the algorithm, and finally converted into a digital signal. The output quality value is essentially a precise conversion process from gravity → mechanical deformation → electrical signal → digital value. Its specific working principle is based on existing mature technology and will not be elaborated upon here. Then, the two electromagnets 418 connected to the limit frame 413 can be disconnected from the external power supply, preventing them from generating a magnetic field. This causes the two corresponding iron plates 419 to move downwards under their own gravity, thereby moving the connected sampling chamber 414 downwards to the top of the electronic measuring balance 402. The weight of the sampling chamber 414 is measured, and the measurement result is transmitted to the controller 2. After the weight measurement of the sampling chamber 414 is completed, the two electromagnets 418 can be electrically reconnected to the external power supply to generate a magnetic field again.This causes the two iron plates 419 to move upwards again under the attraction of the two strong magnetic fields until they are completely in contact with the two electromagnets 418, thus completing the reset of the sampling chamber 414. At this point, the positioning frame 408 can be rotated again by the servo motor 404 to transport another material loaded with flame retardant powder to the top of the electronic measuring balance 402 for measurement. This continues until the weight of all the sampling chambers 414 set in the positioning frame 408 has been measured. Then, the controller 2 can analyze the weight difference between each sampling chamber 414 to detect whether the material in the feeding pipe 109 is being transported evenly. When the weight difference in the feeding pipe 109 is detected to be evenly transported... When the amount of material conveyed per unit time is inconsistent, the controller 2 can adjust the amplitude of the vibrating pump 111 and the rotation speed of the stirring mechanism 110 and the screw conveyor 107 until the material in the feeding pipe 109 reaches the standard of uniform conveying. Through the cooperation between the measuring component 4 and the protective component 3, the feeding device can monitor in real time whether the material is in a uniform conveying state when conveying powdered flame retardant, and make real-time adjustments, thereby ensuring the quality, production efficiency, safety and environmental protection of downstream flame retardant products. This solves the problem that most feeding devices in the existing technology cannot capture flow fluctuations in real time, ultimately making it difficult to achieve uniform metering.

[0037] like Figures 1-2 and Figures 6-9 As shown, a quantitative feeding device for flame retardants includes a conveying assembly 1 for discharging powdered flame retardant. The conveying assembly 1 includes a feeding pipe 109. A measuring assembly 4 for detecting whether the material is conveyed uniformly is provided on the outer surface of the conveying assembly 1. The measuring assembly 4 includes multiple hollow positioning tubes 409 and an electronic measuring balance 402 for weighing extracted flame retardant samples. Extension rods 412 are movably embedded in the inner walls of the multiple hollow positioning tubes 409, and two springs 411 are provided in the inner walls of the multiple hollow positioning tubes 409. One end of each extension rod 412 is fixedly connected to a limiting frame 413. Each of the multiple limiting frames 413 is coupled with a sampling chamber 414 for carrying flame retardant samples. The outer surface of the conveying component 1 is also provided with a protective component 3. The protective component 3 includes a material collection chamber 301. A positioning plate 303 is slidably connected to the inner wall of the material collection chamber 301. The sampling chamber 414 enters the interior of the material collection chamber 301 under the drive of the extension rod 412, pushing the positioning plate 303 to move upward until the sampling chamber 414 is inserted into the interior of the discharge pipe 109 for sampling.

[0038] In this embodiment, after the weight of the material in each of the multiple sampling chambers 414 has been measured, the above steps are repeated. The multiple sampling chambers 414 are reinserted into the feed pipe 109, and then the hydraulic rods 421 are activated to extend them, thereby pushing the pusher block 420 towards the baffle 416. When the material contacts the baffle 416, the pusher force causes the baffle 416 to rotate counterclockwise, tightening the two coil springs 417 connected to it. This causes the material in the sampling chamber 414 to flow back into the feed pipe 109 under the action of the pusher block 420. Then, the hydraulic rods 421 are activated again to shorten them, thereby... The pusher 420 is reset, and the baffle 416 is also reset under the elastic action of the two coil springs 417, thus realizing the re-transmission of the extracted sample into the feed tube 109. Since the amount of sample collected per unit time is small, it will not affect the uniform delivery of a large amount of flame retardant. In addition, the feeding device is carried out in a dry and sterile environment, so when the measuring component 4 extracts a small amount of powdered flame retardant for weight testing, it will not cause contamination of the flame retardant. The bottom of the support frame 401 and the bottom of the feeding bin 108 are both connected to the external support equipment. By recovering the flame retardant after testing, resources are saved.

[0039] The operating method and working principle of this device are as follows: When powdered flame retardant needs to be fed, firstly, the external conveying equipment is fixedly connected to the feed pipe 102 through a sealing flange, so that the powdered material is conveyed into the feed hopper 101 through the external conveying equipment. Then, the drive motor 103 is started, which drives the drive pipe 104 to rotate, thereby driving the drive gear 105 to rotate, which in turn drives the two transmission gears 106 to rotate, thereby driving the two screw conveyor rods 107 to rotate. At the same time, the rotation of the two transmission gears 106 also drives the stirring mechanism 110 to rotate, so that the two stirring rods rotate under the drive of the two transmission gears 106, thereby stirring the powdered flame retardant entering the feed hopper 101 and preventing the flame retardant from agglomerating. The vibration pump 111 is started by the controller 2 to prevent the flame retardant in the feeding hopper 101 from sticking to the inner wall. After being crushed, the flame retardant is moved along the inner wall of the feeding hopper 108 towards the feeding pipe 109 by the rotation of the two screw conveyors 107. After the two screw conveyors 107 deliver the flame retardant into the feeding pipe 109, the flame retardant can be transported outward along the inner wall of the feeding pipe 109 to the downstream processing equipment. When the material enters the feeding pipe 109, the electric telescopic rod 6 can be activated to extend it and push the corresponding push plate 410 towards the picking hopper 301. This causes the two springs 411 connected to it to extend, thereby causing the extension rod 412 to move forward, which in turn pushes the limit frame 413 towards the picking hopper 301. As the material hopper 301 moves in the direction of the extension rod 412, the limiting frame 413, after entering the material hopper 301, exerts an upward squeezing force on the positioning plate 303. This causes the positioning plate 303 to move upward along the inner wall of the material hopper 301, thereby compressing and shortening the elastic element 302. Simultaneously, when the limiting frame 413 has completely moved along the inner wall of the material hopper 301 into the discharge pipe 109, the top of the limiting frame 413 contacts the bottom edge of the positioning plate 303. At this point, the sampling hopper 414, through the action of the controller 2, can extract flame retardant from the discharge pipe 109 within a specified unit time. Then, the electric telescopic rod 6 can be activated again to shorten it, causing the corresponding push plate... 410 is no longer compressed, causing the push plate 410 to move closer to the mounting post 5 under the elastic action of the two corresponding springs 411. This, in turn, drives the extension rod 412 to move backward, causing the sampling chamber 414 to move backward until it is completely removed from the interior of the feed pipe 109 and the sampling chamber 301, thus completing the sampling within the specified unit time. Furthermore, once the sampling chamber 414 is removed from the interior of the sampling chamber 301, it no longer compresses the positioning plate 303. At this point, the positioning plate 303 will move downward under the elastic action of the elastic element 302, sealing the connection between the feed pipe 109 and the sampling chamber 301. Then, the servo motor 404 can be activated, causing it to drive the connecting rod 405 to rotate, which in turn drives the drive gear 406 to rotate.This drives the driven gear 407 to rotate, which in turn drives the positioning frame 408 to rotate, causing multiple limit frames 413 to rotate until another unloaded limit frame 413 rotates to the position corresponding to the material receiving bin 301. The above operation can then be repeated to move the limit frame 413 into the inside of the feeding tube 109 for sampling. When sampling is complete, the servo motor 404 is started again to drive multiple limit frames 413 to rotate until the limit frame 413 loaded with the sample rotates to the top of the electronic measuring balance 402. Then, the two electromagnets 418 connected to the limit frame 413 can be disconnected from the external power supply so that they no longer generate a magnetic field, thereby causing the two iron plates 419 corresponding to them to rotate in their own directions. Under the influence of gravity, the sampler moves downwards, causing the connected sampling chamber 414 to move downwards to the top of the electronic measuring balance 402. The weight of the sampling chamber 414 is measured, and the result is transmitted to the controller 2. After the weight measurement of the sampling chamber 414 is completed, the two electromagnets 418 are electrically connected to an external power source again, generating a magnetic field. This causes the two iron plates 419 to move upwards again under the attraction of the two strong magnetic fields until they are completely in contact with the two electromagnets 418, thus completing the reset of the sampling chamber 414. At this point, the servo motor 404 rotates the positioning frame 408 again, transporting another material containing flame retardant powder to the electronic measuring balance 402. The balance 402 is used to measure the weight of multiple sampling chambers 414 in the positioning frame 408 until all weights have been measured. The controller 2 then analyzes the weight difference between each sampling chamber 414 to detect whether the material in the feeding pipe 109 is being conveyed uniformly. If the amount of material conveyed per unit time in the feeding pipe 109 is inconsistent, the controller 2 adjusts the amplitude of the vibration pump 111 and the rotation speed of the stirring mechanism 110 and the screw conveyor 107 until the material in the feeding pipe 109 reaches the standard of uniform conveying. After the weight of the material in multiple sampling chambers 414 has been measured, the above steps are repeated, and the multiple sampling chambers 414 are reinserted into the feeding pipe 109. Inside, hydraulic rods 421 are activated to extend them, pushing pusher 420 towards baffle 416. When material contacts baffle 416, the pushing force causes baffle 416 to rotate counterclockwise, tightening the two coil springs 417 connected to it. This causes the material in the sampling chamber 414 to flow back into the feed pipe 109 under the action of pusher 420. Then, hydraulic rods 421 are activated again to shorten them, resetting pusher 420. Simultaneously, baffle 416 resets under the elastic action of the two coil springs 417, thus realizing the re-transmission of the extracted sample into the feed pipe 109. By recovering the flame retardant after testing, resources are saved.

[0040] The wiring diagrams of the drive motor 103, stirring mechanism 110, vibration pump 111, electronic measuring balance 402, servo motor 404, electromagnet 418, hydraulic rod 421, and electric telescopic rod 6 in this invention are common knowledge in the field, and their working principles are known technologies. The appropriate models are selected according to actual use. Therefore, the control methods and wiring arrangements of the drive motor 103, stirring mechanism 110, vibration pump 111, electronic measuring balance 402, servo motor 404, electromagnet 418, hydraulic rod 421, and electric telescopic rod 6 will not be explained in detail.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quantitative feeding device for flame retardants, comprising a conveying assembly (1) for discharging powdered flame retardant, the conveying assembly (1) including a feeding pipe (109), and a measuring assembly (4) for detecting whether the material is conveyed uniformly on the outer surface of the conveying assembly (1), characterized in that: The measuring component (4) includes multiple hollow positioning tubes (409) and an electronic measuring balance (402) for weighing the extracted flame retardant sample. The inner walls of the multiple hollow positioning tubes (409) are movably fitted with extension rods (412). The inner walls of the multiple hollow positioning tubes (409) are provided with two springs (411). One end of the multiple extension rods (412) is fixedly connected to a limiting frame (413). The interior of the multiple limiting frames (413) is coupled with a sampling chamber (414) for carrying the flame retardant sample. The outer surface of the conveying assembly (1) is also provided with a protective assembly (3). The protective assembly (3) includes a material taking bin (301). The inner wall of the material taking bin (301) is slidably connected with a positioning plate (303). The sampling bin (414) enters the interior of the material taking bin (301) under the drive of the extension rod (412), pushing the positioning plate (303) to move upward until the sampling bin (414) is inserted into the interior of the discharge pipe (109) for sampling. The inner walls of the multiple hollow positioning tubes (409) are slidably connected with push plates (410), the inner walls of the multiple sampling chambers (414) are movably embedded with limiting tubes (415), the outer surfaces of the multiple limiting tubes (415) are fixedly fitted with baffles (416), the inner walls of the multiple sampling chambers (414) are provided with coil springs (417), the tops of the multiple limiting frames (413) are provided with electromagnets (418) near the two side edges, the outer surfaces of the multiple sampling chambers (414) are fixedly installed with iron plates (419), the inner walls of the multiple sampling chambers (414) are provided with hydraulic rods (421) near the center, and one end of the multiple hydraulic rods (421) is fixedly installed with push blocks (420). Each pair of adjacent iron plates (419) forms a group, and the outer surface of each group of iron plates (419) slides against the inner wall of the limiting frame (413). The outer surface of each of the multiple push blocks (420) slides against the inner wall of each of the multiple sampling chambers (414). The measuring component (4) also includes a support frame (401). The top of the support frame (401) is fixed with a mounting column (5). An electric telescopic rod (6) is provided on the inner wall of the mounting column (5). The outer surfaces of the multiple hollow positioning tubes (409) are in contact with the outer surface of the mounting column (5).

2. The quantitative feeding device for flame retardants according to claim 1, characterized in that: A pressure-resistant frame (403) is fixedly installed on the top of the support frame (401) near one side edge. A servo motor (404) is fixedly installed on the top of the pressure-resistant frame (403) by screws. A connecting rod (405) is fixedly connected to the output end of the servo motor (404). A drive gear (406) is fixedly sleeved on the outer surface of the connecting rod (405). A driven gear (407) is rotatably connected inside the support frame (401). A positioning frame (408) is fixedly installed on the top of the driven gear (407).

3. The quantitative feeding device for flame retardants according to claim 2, characterized in that: The outer surface of the electronic measuring balance (402) is fixedly connected to the outer surface of the support frame (401) by screws. The bottom end of the connecting rod (405) moves through the pressure-resistant frame (403) to the outside of the drive gear (406). The bottom end of the connecting rod (405) is movably embedded in the inner bottom surface of the pressure-resistant frame (403). The drive gear (406) is located inside the pressure-resistant frame (403).

4. The quantitative feeding device for flame retardants according to claim 3, characterized in that: The outer surface of the driving gear (406) meshes with the outer surface of the driven gear (407). The outer surfaces of the multiple hollow positioning tubes (409) are fixedly connected to the outer surface of the positioning frame (408). The multiple springs (411) are grouped in pairs. One end of each group of springs (411) is fixedly connected to the outer surface of multiple push plates (410). The other end of each group of springs (411) is fixedly connected to the inner wall of multiple hollow positioning tubes (409). The outer surfaces of the multiple push plates (410) are fixedly connected to one end of multiple extension rods (412).

5. The quantitative feeding device for flame retardants according to claim 4, characterized in that: One end of each of the multiple extension rods (412) extends movably through the outside of the multiple hollow positioning tubes (409), and the two ends of each of the multiple limiting tubes (415) are fixedly extended through the opposite sides of the multiple baffles (416). Each pair of the multiple coil springs (417) is connected as a group, and the two ends of each of the multiple limiting tubes (415) extend movably through the outside of the multiple groups of coil springs (417). The outer surfaces of the multiple limiting tubes (415) are fixedly connected to one end of each of the multiple groups of coil springs (417).

6. The quantitative feeding device for flame retardants according to claim 5, characterized in that: The outer surface of the material receiving bin (301) is fixedly connected to the inner wall of the material discharge pipe (109). The inner wall of the material receiving bin (301) is provided with an elastic element (302) through an auxiliary rod. The top end of the elastic element (302) is fixedly connected to the bottom of the auxiliary rod, and the bottom end of the elastic element (302) is fixedly connected to the top of the positioning plate (303).

7. The quantitative feeding device for flame retardants according to claim 6, characterized in that: The conveying assembly (1) also includes a feeding bin (101). A controller (2) is provided on the outer surface of the feeding bin (101) near the bottom. A feeding pipe (102) is fixedly connected to the top of the feeding bin (101). A feeding bin (108) is fixedly connected to the bottom of the feeding bin (101). A drive motor (103) is provided on the outer surface of the feeding bin (108) near the bottom via an auxiliary frame. A drive pipe (104) is fixedly connected to the output end of the drive motor (103). The two ends of the drive pipe (104) respectively extend through to the opposite sides of the auxiliary frame. A drive gear (105) is fixedly sleeved on the outer surface of the drive pipe (104) near the center. Two transmission gears (106) are meshed on the outer surface of the drive gear (105).

8. The metering device for flame retardants according to claim 7, characterized in that: The inner walls of the two transmission gears (106) are fixedly embedded with spiral conveying rods (107). The two ends of the two spiral conveying rods (107) respectively extend to the opposite sides of the feeding bin (108). A stirring mechanism (110) is meshed between the outer surfaces of the two transmission gears (106). The stirring rod part of the stirring mechanism (110) is located inside the feeding bin (101). A vibration pump (111) is installed on the outer surface of the feeding bin (101) near the top.

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