A continuous production of carbon black granulation feeding device and method

Abstract

The application discloses a kind of carbon black granulation continuous production feed equipment and method, it is related to carbon black raw material processing production technical field.The present application mainly includes feeding assembly, guide component and multistage dust separation component, multistage dust separation component includes dust separation tank, inner partition layer, particle backflow cavity, outer through cavity, and installs elastic bar in dust separation tank, and is configured with carbon black filter tube in dust separation tank, is configured with air dust filter tube outside, is configured with photoelectric detection module in particle backflow cavity, is configured with electromagnetic module in outer through cavity.The present application avoids the impact of carbon black raw material on carbon black filter tube when directly injecting raw material into sinking cavity, simultaneously utilizes air dust filter tube to block outside, and effectively avoids the problem of carbon black filter tube blockage caused by excessive carbon black raw material in particle backflow cavity by "timely" discharging and driving control operation, reduces the blockage probability of carbon black filter tube.

Description

Technical Field

[0001] This invention relates to the field of carbon black raw material processing and production technology, and in particular to a continuous carbon black granulation production feeding equipment and method. Background Technology

[0002] Previously, carbon black raw materials were fed directly using a feeder. In actual operation, the carbon black raw materials were either poured directly into the feeder or automatically transferred to the feeder port by a conveyor belt and slid into the feeder.

[0003] When carbon black raw materials are poured directly into the feeder, or introduced into the feeder via a conveyor belt, many impurities in the air will also enter the feeder along with the carbon black raw materials, and a large amount of carbon black raw material dust will be generated.

[0004] To prevent dust and impurities in the air from mixing into the feeder and causing dust from the carbon black raw material, the feeder's feeding hopper is typically made into a closed structure. A raw material supply pipe is connected to the closed feeding hopper, and a breathable filter is installed on the closed feeding hopper to reduce dust from the carbon black raw material and prevent dust and impurities from the external environment from entering the feeding hopper.

[0005] However, the above method is prone to clogging of the air filter. The carbon black raw material entering the feed hopper in real time is constantly "impacting" the filter along with the exhaust flow. In addition, the carbon black raw material is extremely small in size, which can easily cause the filter to clog and affect the efficiency of the closed carbon black raw material airflow supply. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a continuous production feeding device and method for carbon black granulation, thereby avoiding the impact of carbon black raw material directly injected into the raw material sinking chamber on the carbon black filter tube. At the same time, the air and dust filter tube is used to block the outside, and the excessive carbon black raw material in the particle return chamber is discharged in a timely manner by a drive and control operation, which effectively avoids the problem of carbon black raw material with excessive concentration aggravating the clogging of the carbon black filter tube and reduces the probability of clogging of the carbon black filter tube.

[0007] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0008] This invention provides a continuous feeding device for carbon black granulation. The feeding assembly includes a feeding bin, which contains a lower cone, a raw material settling chamber above the lower cone, and a raw material sedimentation chamber below the lower cone. The feeding bin is equipped with a low-level sensing module that probes towards the raw material sedimentation chamber and a high-level sensing module above the low-level sensing module. The lower cone has a discharge port at its bottom that connects the raw material settling chamber and the raw material sedimentation chamber.

[0009] Material guiding assembly: includes an injection airflow pipe that communicates with the raw material sinking chamber, the injection airflow pipe is connected to an airflow pump, and the airflow pump is also connected to an upstream feed pipe.

[0010] Multi-stage dust separation assembly: Includes a dust separation tank, a chassis located at the bottom of the dust separation tank and fixedly installed at the upper opening of the feeding hopper, with an airflow cone hole at the center of the chassis. The dust separation tank contains an inner partition plate, a particle return chamber below the inner partition plate, and an outer passage chamber above the inner partition plate. The particle return chamber houses a photoelectric detection module. The inner partition plate is fitted with a carbon black filter pipe connecting the particle return chamber and the outer passage chamber. The dust separation tank is fitted with an air dust filter pipe connecting to the external environment and the outer passage chamber. A flexible rod is movably installed in the middle of the inner partition plate. The flexible rod includes a rod body, a conical disc at the bottom of the rod body, and a top magnetic plate at the top of the rod body. The conical disc aligns with the airflow cone hole, and the top magnetic plate is located in the outer passage chamber, which is equipped with an electromagnetic module aligned with the top magnetic plate. The rod body has a shuttle-shaped component located in the particle return chamber, and a tension spring is fitted between the shuttle-shaped component and the inner partition plate.

[0011] As a preferred technical solution of the feeding device in this invention: the material discharge port of the lower cone is located at the middle position of the bottom of the lower cone, wherein the horizontal position of the material discharge port is higher than the horizontal position detected by the high-position sensing module.

[0012] As a preferred technical solution for the feeding equipment in this invention: the air pump adopts a bidirectional centrifugal pump with forward and reverse rotation, and the rate at which the air pump delivers carbon black raw materials to the feeding bin is not lower than the rate at which the carbon black raw materials are discharged from the feeding bin.

[0013] As a preferred technical solution of the feeding device in this invention: the bottom side of the chassis is provided with a sealing ring that matches the upper opening shell of the feeding bin.

[0014] As a preferred technical solution of the feeding device in this invention: the particle return chamber of the dust separator is provided with a sliding ramp, and the lowest point of the sliding ramp is connected to the airflow cone hole.

[0015] As a preferred technical solution for the feeding device in this invention: both the air dust filter pipe and the carbon black filter pipe are equipped with filter screens. The pore size of the filter screen in the air dust filter pipe is larger than that in the carbon black filter pipe.

[0016] This invention provides a control method for a continuous carbon black granulation production feeding device, comprising the following steps:

[0017] S1. The air pump starts in the forward direction. The air pump draws in carbon black raw material airflow through the upstream feed pipe and injects the carbon black raw material airflow into the raw material sinking chamber of the feed hopper through the injection airflow pipe.

[0018] S2. Most of the carbon black particles entering the raw material settling chamber sink into the raw material sedimentation chamber after passing through the lower cone. A small portion of the carbon black particles entering the raw material settling chamber rises into the particle return chamber. Among these, the greater the real-time airflow rate of the carbon black raw material injected into the raw material settling chamber, the greater the upward air pressure thrust on the cone disk, and the larger the gap between the cone disk and the airflow cone hole.

[0019] S3. When the photoelectric detection module detects that the carbon black particle concentration Wx in the particle return chamber is greater than or equal to the system's preset maximum concentration reference value Wmax, and the accumulated height of carbon black raw material in the raw material sedimentation chamber is not lower than the horizontal height detected by the low-level sensor module, the electromagnetic module is powered on and starts. The electromagnetic module magnetically attracts the top magnetic plate, and at the same time, the air pump starts in reverse. The carbon black raw material with excessive concentration in the particle return chamber descends through the airflow cone hole and enters the raw material sedimentation chamber. Some carbon black particles continue to descend and fall into the raw material sedimentation chamber, while some carbon black particles are sucked into the airflow pipe by the reverse suction of the air pump until the carbon black particle concentration Wx is less than the maximum concentration reference value Wmax. At this point, the air pump stops reversing, the electromagnetic module is de-energized and loses its magnetism, and the air pump restarts in the forward direction.

[0020] S4. When the accumulated height of carbon black raw material in the raw material settling chamber is not lower than the horizontal height detected by the high-level sensing module, the air pump stops working, the electromagnetic module is powered on and started, the electromagnetic module magnetically attracts the top magnetic plate, and the carbon black raw material in the particle return chamber settles naturally.

[0021] Compared with existing technologies, the beneficial effects of this invention are:

[0022] 1. This invention introduces carbon black raw materials into the feeder in an airflow manner through a feeding assembly. The feeder is designed with a lower cone to form a raw material settling chamber and a raw material sedimentation chamber, thereby achieving dynamic and static separation of carbon black raw material injection and accumulation.

[0023] 2. This invention utilizes a multi-stage dust-proof assembly on the upper side of the feeder. An inner partition plate forms a double-barrier "barrier" of particle return chamber and external passage chamber. The elastic rods are linearly coordinated with the airflow (rate) injected into the carbon black raw material, adaptively reducing the amount of carbon black raw material entering the particle return chamber. Simultaneously, small-sized airflow cone holes are opened on the chassis, and a separate carbon black filter tube is configured on the inner partition plate. This significantly avoids the impact of carbon black raw material directly injected into the raw material sinking chamber on the carbon black filter tube. Furthermore, the use of air and dust filter tubes to block external airflow reduces the probability of clogging in the carbon black filter tube.

[0024] 3. This invention utilizes a sensing module to monitor the accumulation of carbon black raw material in the raw material sedimentation chamber in real time during the process of injecting carbon black raw material into the feeder, and a photoelectric detection module to monitor the concentration of carbon black raw material in the particle return chamber in real time. By driving and controlling the timely discharge of carbon black raw material exceeding the standard in the particle return chamber, the invention effectively avoids the problem of carbon black filter pipes being clogged due to carbon black raw material exceeding the standard concentration. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the continuous airflow feeding device for carbon black raw materials in this invention.

[0026] Figure 2 for Figure 1 A magnified schematic diagram of a portion of point A in the middle.

[0027] Figure 3 This is a schematic diagram of the carbon black raw material gas flow being injected into the feeder in this invention.

[0028] Figure 4 This is a schematic diagram of the reverse sinking motion of carbon black raw material with excessive particle concentration in the reflux chamber in this invention.

[0029] Among them: 1-Feeding assembly, 101-Feeding bin, 102-Low-level sensing module, 103-High-level sensing module, 104-Lower cone, 1041-Discharge port, 105-Raw material settling chamber, 106-Raw material settling chamber; 2-Guiding assembly, 201-Transfer pipe, 202-Injection airflow pipe, 203-Airflow pump, 204-Upstream feed pipe, 205-Flow meter; 3-Multi-stage dust separation assembly, 301-Dust separation tank, 302-Chassis, 3021 - Sealing ring, 3022- Airflow cone hole, 303- Inner partition plate, 304- Particle return cavity, 305- Outer cavity, 306- Sliding ramp, 307- Carbon black filter fitting, 308- Air dust filter fitting, 309- Filter screen, 310- Elastic rod, 3101- Conical disc, 3102- Rod body, 3013- Shuttle-shaped part, 3104- Tension spring, 3105- Top magnetic plate, 311- Photoelectric detection module, 312- Electromagnetic module. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] Example 1: This invention designs a continuous carbon black granulation production feeding device, mainly including a feeding component 1, a guiding component 2, and a multi-stage dust separation component 3. The specific structural details are as follows:

[0032] Please see Figure 1The external structure of the feeding assembly 1 is a feeding bin 101. Inside the feeding bin 101, a lower cone 104 is provided. A raw material settling chamber 106 is formed above the lower cone 104, and a raw material settling chamber 105 is formed below the lower cone 104. The raw material settling chamber 105 of the feeding bin 101 is also equipped with a low-position sensing module 102 and a high-position sensing module 103. The high-position sensing module 103 is located above the low-position sensing module 102.

[0033] The lower cone 104 has a discharge port 1041 at its bottom. The discharge port 1041 is located in the middle of the bottom of the lower cone 104. The discharge port 1041 connects the raw material sinking chamber 106 and the raw material settling chamber 105. The horizontal position of the discharge port 1041 is higher than the horizontal position detected by the high-position sensing module 103. The cone apex of the lower cone 104 faces the raw material settling chamber 105. The lower cone 104 separates the carbon black raw material with a large degree of mobility in the upper raw material sinking chamber 106 from the relatively static carbon black raw material in the lower raw material settling chamber 105, thereby reducing the amount of carbon black raw material "dust" generated upward from the lower raw material settling chamber 105.

[0034] Please refer to the combination Figure 1 , Figure 2 The multi-stage dust separation component 3 has a dust separation tank 301 on the outside and a chassis 302 at the bottom of the dust separation tank 301. The chassis 302 is fixedly installed at the upper opening of the feeding bin 101. A sealing ring 3021 is provided on the bottom side of the chassis 302. The sealing ring 3021 is connected to the upper opening of the feeding bin 101.

[0035] An airflow cone hole 3022 is provided at the center of the chassis 302. The airflow cone hole 3022 connects the raw material sinking chamber 106 and the particle return chamber 304. The inner wall of the particle return chamber 304 is provided with a sliding ramp 306. The lowest point of the sliding ramp 306 is connected to the airflow cone hole 3022. The carbon black raw material sinking in the particle return chamber 304 slides down the sliding ramp 306 and is discharged from the particle return chamber 304 through the airflow cone hole 3022.

[0036] The dust collection tank 301 has an inner partition plate 303. A particle return chamber 304 is formed below the inner partition plate 303, and an outer passage chamber 305 is formed on the inner partition plate 303. The particle return chamber 304 has a built-in photoelectric detection module 311, which is used to detect the concentration of carbon black raw materials in the particle return chamber 304. A carbon black filter tube 307 is installed on the inner partition plate 303, which connects the particle return chamber 304 and the outer passage chamber 305. The dust collection tank 301 is equipped with an air dust filter tube 308, which connects to the external environment and the outer passage chamber 305.

[0037] Both the air dust filter tube 308 and the carbon black filter tube 307 are equipped with filter screens 309. The pore size of the filter screen 309 in the air dust filter tube 308 is larger than that in the carbon black filter tube 307. The air dust filter tube 308 can block most of the dust and impurities in the external environment. The external passage cavity 305 forms a "barrier" area against the external environment. The particle return cavity 304 forms a "barrier" area to prevent the carbon black raw material from "escaping" to the outside. At the same time, the particle return cavity 304 is also a "barrier" area that allows the carbon black raw material that originally wanted to overflow to flow back to the feeding bin 101. Most of the carbon black raw material entering the raw material sinking cavity 106 will not enter the particle return cavity 304. Most of the carbon black raw material entering the particle return cavity 304 will not enter the carbon black filter tube 307. The carbon black filter tube 307 can operate continuously without clogging for a longer period of time, so that the continuous airflow feeding process of carbon black raw material can continue for a longer period of time.

[0038] The elastic rod 310 includes a rod body 3102, which moves through the middle of the inner partition plate 303. A conical disc 3101 is installed at the bottom end of the rod body 3102, and a top magnetic plate 3105 is installed at the top end of the rod body 3102. The rod body 3102 is provided with a shuttle-shaped part 3103, which is located in the particle return cavity 304. A tension spring 3104 is sleeved on the rod body 3102 between the shuttle-shaped part 3103 and the inner partition plate 303.

[0039] The cone disk 3101 can block the airflow cone hole 3022. The top magnetic plate 3105 is located in the outer cavity 305. The outer cavity 305 is equipped with an electromagnetic module 312, which magnetically attracts the top magnetic plate 3105.

[0040] Please see Figure 1 , Figure 3 , Figure 4 The material guiding assembly 2 includes an injection airflow pipe 202. One end of the injection airflow pipe 202 is connected to the raw material sinking chamber 106. The end of the injection airflow pipe 202 facing the raw material sinking chamber 106 is provided with a transfer pipe head 201 connected to the feeding bin 101. The injection airflow pipe 202 is equipped with a flow meter 205.

[0041] The other end of the injection airflow pipe 202 is connected to an airflow pump 203, which is also connected to an upstream feed pipe 204. The carbon black raw material is output from the upstream storage and feeding equipment to the upstream feed pipe 204, and is transported to the injection airflow pipe 202 by the airflow pump 203 and enters the raw material settling chamber 106. The carbon black raw material in the raw material settling chamber 106 sinks through the lower cone 104 and enters the raw material settling chamber 105. The airflow pump 203 is a bidirectional centrifugal pump that operates in both forward and reverse directions. The rate at which the airflow pump 203 delivers the carbon black raw material to the feeding bin 101 is not lower than the carbon black raw material discharge rate of the feeding bin 101.

[0042] Example 2: This invention designs a process method for a continuously feeding equipment for carbon black granulation, the specific control steps of which are as follows:

[0043] First, combined Figure 2 , Figure 3 When the air pump 203 starts in the forward direction, the air pump 203 draws in the carbon black raw material airflow through the upstream feed pipe 204 and injects the carbon black raw material airflow into the raw material sinking chamber 106 of the feed bin 101 through the injection airflow pipe 202.

[0044] Most of the carbon black particles that enter the raw material settling chamber 106 sink into the raw material settling chamber 105 through the lower cone 104, while a small portion of the carbon black particles that enter the raw material settling chamber 106 rise into the particle reflux chamber 304.

[0045] The higher the carbon black raw material airflow rate injected into the raw material sinking chamber 106, the greater the upward air pressure thrust on the cone disk 3101, and the larger the gap between the cone disk 3101 and the airflow cone hole 3022. Conversely, the lower the injected carbon black raw material airflow rate, the smaller the gap between the cone disk 3101 and the airflow cone hole 3022, the less carbon black raw material enters the particle return chamber 304, and the lower the probability of clogging of the carbon black filter tube 307.

[0046] Then, combine Figure 2 , Figure 4 When the photoelectric detection module 311 detects that the carbon black particle concentration Wx in the particle return chamber 304 is greater than or equal to the maximum concentration reference value Wmax preset by the system, and the carbon black raw material accumulation height in the raw material sedimentation chamber 105 is not lower than the horizontal height detected by the low-level sensing module 102, the electromagnetic module 312 is powered on and started. The electromagnetic module 312 magnetically attracts the top magnetic plate 3105, and at the same time, the air pump 203 starts in reverse. The carbon black raw material with excessive concentration in the particle return chamber 304 descends through the airflow cone hole 3022 and enters the raw material settling chamber 106. Some carbon black particles continue to descend and fall into the raw material sedimentation chamber 105, and some carbon black particles are sucked into the airflow pipe 202 by the reverse suction of the air pump 203 until the carbon black particle concentration Wx is less than the maximum concentration reference value Wmax. At this time, the air pump 203 stops reversing, the electromagnetic module 312 is de-energized and demagnetized, and the air pump 203 restarts in the forward direction. This not only reduces the amount of carbon black material in the particle return chamber 304, but also allows for reverse cleaning of the carbon black filter tube 307, removing the carbon black material adhering to the side of the carbon black filter tube 307 facing the particle return chamber 304.

[0047] Finally, when the accumulated height of carbon black raw material in the raw material settling chamber 105 is not lower than the horizontal height detected by the high-level sensing module 103, the air pump 203 stops working, the electromagnetic module 312 is powered on and started, and the electromagnetic module 312 magnetically attracts the top magnetic plate 3105. The carbon black raw material in the particle return chamber 304 settles naturally and is discharged from the air flow cone hole 3022 into the raw material settling chamber 106. During the settling process, some carbon black particles slide down the sliding slope 306 to the air flow cone hole 3022 and continue to settle.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A continuous carbon black granulation production feeding device, characterized in that, include: Feeding assembly (1): includes a feeding bin (101), which has a lower cone (104), a raw material sinking chamber (106) above the lower cone (104), and a raw material settling chamber (105) below the lower cone (104). The feeding bin (101) is equipped with a low-position sensing module (102) that probes towards the raw material settling chamber (105) and a high-position sensing module (103) above the low-position sensing module (102). The lower cone (104) has a discharge port (1041) at its bottom that connects the raw material sinking chamber (106) and the raw material settling chamber (105). Material guiding assembly (2): includes an injection airflow pipe (202) connected to the raw material sinking chamber (106), the injection airflow pipe (202) is connected to an airflow pump (203), the airflow pump (203) is also connected to an upstream feed pipe (204), the airflow pump (203) is a bidirectional centrifugal pump, and the rate at which the airflow pump (203) delivers carbon black raw material to the feed bin (101) is not lower than the carbon black raw material discharge rate of the feed bin (101); Multi-stage dust separation assembly (3): includes a dust separation tank (301), a chassis (302) located at the bottom of the dust separation tank (301) and fixedly installed at the upper opening of the feeding bin (101), an airflow cone hole (3022) is opened at the center of the chassis (302), an inner partition plate (303) is provided inside the dust separation tank (301), a particle return chamber (304) located below the inner partition plate (303) and an outer passage chamber (305) located above the inner partition plate (303), a photoelectric detection module (311) is built into the particle return chamber (304), a carbon black filter pipe (307) connecting the particle return chamber (304) and the outer passage chamber (305) is installed on the inner partition plate (303), and an air dust filter pipe (308) connecting the external environment and the outer passage chamber (305) is installed on the dust separation tank (301). An elastic rod (310) is movably installed in the middle of the inner partition plate (303). The elastic rod (310) includes a rod body (3102), a cone disk (3101) at the bottom end of the rod body (3102), and a top magnetic plate (3105) at the top end of the rod body (3102). The cone disk (3101) is aligned with the airflow cone hole (3022), the top magnetic plate (3105) is located in the outer cavity (305), and the outer cavity (305) is equipped with an electromagnetic module (312) aligned with the top magnetic plate (3105). The rod body (3102) is provided with a shuttle-shaped part (3103), the shuttle-shaped part (3103) is located in the particle return cavity (304), and the rod body (3102) is fitted with a tension spring (3104) located between the shuttle-shaped part (3103) and the inner partition plate (303).

2. The continuous carbon black granulation production feeding equipment according to claim 1, characterized in that: The material discharge port (1041) of the lower cone (104) is located at the middle position of the bottom of the lower cone (104); The horizontal position of the material discharge port (1041) is higher than the horizontal position detected by the high-position sensing module (103).

3. The continuous carbon black granulation production feeding equipment according to claim 1, characterized in that: The chassis (302) has a sealing ring (3021) on its bottom side that matches the upper opening shell of the feeding bin (101).

4. The continuous carbon black granulation production feeding equipment according to claim 1, characterized in that: The particle return chamber (304) of the dust separator (301) is provided with a sliding ramp (306), and the lowest point of the sliding ramp (306) is connected to the airflow cone hole (3022).

5. The continuous carbon black granulation production feeding equipment according to claim 1, characterized in that: Both the air dust filter tube (308) and the carbon black filter tube (307) are equipped with filter screens (309). The filter screen (309) of the air dust filter tube (308) has a larger pore size than the filter screen (309) of the carbon black filter tube (307).

6. A control method for a continuous carbon black granulation production feeding device, characterized in that, The continuous carbon black granulation feeding equipment according to any one of claims 1 to 5 includes the following steps: S1. The air pump (203) starts in the forward direction. The air pump (203) draws in carbon black raw material airflow through the upstream feed pipe (204) and injects the carbon black raw material airflow into the raw material sinking chamber (106) of the feed bin (101) through the injection airflow pipe (202). S2. Most of the carbon black particles that enter the raw material settling chamber (106) sink through the lower cone (104) into the raw material settling chamber (105), while a small portion of the carbon black particles that enter the raw material settling chamber (106) rise into the particle reflux chamber (304). Among them, the greater the carbon black raw material airflow rate injected into the raw material sinking chamber (106) in real time, the greater the upward air pressure thrust on the cone disk (3101), and the larger the gap between the cone disk (3101) and the airflow cone hole (3022). S3. When the photoelectric detection module (311) detects that the carbon black particle concentration Wx in the particle return chamber (304) is greater than or equal to the maximum concentration reference value Wmax preset by the system, and the carbon black raw material accumulation height in the raw material sedimentation chamber (105) is not lower than the horizontal height detected by the low-position sensing module (102), the electromagnetic module (312) is powered on and started, the electromagnetic module (312) magnetically attracts the top magnetic plate (3105), and at the same time the air pump (203) is started in reverse. The carbon black raw material with excessive concentration in the particle return chamber (304) descends through the air flow cone hole (3022) and enters the raw material sinking chamber (106). Some carbon black particles continue to descend and fall into the raw material sedimentation chamber (105). Some carbon black particles are sucked into the air flow pipe (202) by the reverse suction of the air pump (203) until the carbon black particle concentration Wx is less than the maximum concentration reference value Wmax. Then the air pump (203) stops the reverse start, the electromagnetic module (312) is de-energized and demagnetized, and the air pump (203) restarts in the forward direction. S4. When the carbon black material accumulation height in the raw material settling chamber (105) is not lower than the horizontal height detected by the high-level sensing module (103), the air pump (203) stops working, the electromagnetic module (312) is powered on and started, the electromagnetic module (312) magnetically attracts the top magnetic plate (3105), and the carbon black material in the particle return chamber (304) naturally settles and is discharged from the air flow cone hole (3022) into the raw material settling chamber (106).

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