A raw material feeding device and method for refractory brick production

Abstract

This invention belongs to the field of refractory brick feeding devices, and discloses a raw material feeding device and method for refractory brick production. This solution, through the arrangement of a double-cone centering roller and a spring, allows the belt edge to center and limit movement when the belt shifts due to the center of gravity of the raw material. Simultaneously, under high lateral pressure, the spring, through compression, can cooperate with the double-cone centering roller to allow the belt some clearance, preventing excessive warping of the belt's bent edges. Furthermore, the spring's elasticity provides flexible resistance to belt displacement, and the resistance is positively correlated with the amount of belt shift. After the center of gravity of the belt recovers, the belt automatically resets under the spring's rebound force, thus automatically centering itself. In other words, this solution provides flexible guidance and limiting, while also achieving automatic centering.

Description

Technical Field

[0001] This invention belongs to the technical field of refractory brick feeding devices, specifically relating to a raw material feeding device and method for refractory brick production. Background Technology

[0002] On automated production lines, the raw materials for refractory bricks are usually transported by conveyor belts to the silo of the pressing equipment for storage. After the pressing equipment completes the pressing process, the silo directly supplies the pressing equipment. Since the raw materials for refractory bricks need to undergo multiple stages of screening and crushing before being added to the pressing equipment, multiple conveyor belts are required.

[0003] Since the raw material for refractory bricks is powder, the raw material may move to the sides and detach from the conveyor belt during the conveying process. To avoid this, inclined idlers are usually arranged to bend the cross-section of the conveyor belt support surface into a V-shape, so that while supporting and conveying the raw material, the edge of the conveyor belt can intercept the raw material.

[0004] However, when raw materials are added to the conveyor belt, the material accumulation is not uniform, resulting in uneven force on both sides of the conveyor belt. This can easily generate lateral force and cause the belt to shift and slide. At this time, it is necessary to adjust the position of the conveyor belt in time to avoid the continuous shift of the conveyor belt, which could lead to the lateral collapse of the raw materials or the belt falling off. Summary of the Invention

[0005] The present invention aims to provide a raw material feeding device and method for refractory brick production, so as to solve the problem of conveyor belt deviation during use mentioned above.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a raw material feeding device for refractory brick production, comprising... The frame has a drive roller and a redirecting roller installed at both ends. The drive roller is connected to a drive motor at the end, and the drive roller and the redirecting roller are both fitted with a belt. Multiple flange units are arranged at intervals along the length of the frame. The flange units abut against the top surface of the inner side of the belt and are used to bend the belt into a "V" shape. The centering unit includes a side plate and a centering assembly. The side plate is fixed to the top surface of the frame. The top of the side plate has an inclined edge, on which the centering assembly is installed. The centering assembly includes a double-cone centering roller, a movable frame, a connecting screw, a limit nut, a guide cylinder, a spring, and a guide rod. The double-cone centering roller is rotatably mounted on the movable frame and abuts against the bent edge of the belt. The connecting screw and the guide rod are respectively connected to the movable frame and pass through the inclined edge. The guide cylinder is fixed to the inclined edge, and the guide rod is slidably fitted into the guide cylinder. The limit nut is threaded onto the connecting screw, and the spring is fitted onto the connecting screw and located on the side of the inclined edge closer to the movable frame.

[0007] The invention is further configured such that: the centering unit also includes a mounting plate, which is fixed to the side wall of the frame. The side wall of the mounting plate is provided with a centering component, which includes a double-cone centering roller, a movable frame, a connecting screw, a limiting nut, a guide cylinder, a spring, and a guide rod. The double-cone centering roller is rotatably mounted on the movable frame and abuts against the side of the bottom of the belt. The connecting screw and the guide rod are respectively connected to the movable frame and pass through the mounting plate. The guide cylinder is fixed to the mounting plate, and the guide rod is slidably fitted to the guide cylinder. The limiting nut is threaded onto the connecting screw, and the spring is fitted onto the connecting screw and located on the side of the mounting plate near the movable frame.

[0008] The invention is further configured such that: two limiting nuts with opposite directions of rotation are fitted on the connecting screw, and a limiting pin is installed on the connecting screw, with the limiting pin abutting against the limiting nut away from the movable frame.

[0009] The present invention is further configured such that: the flanging unit includes a roller frame, a horizontal roller and a flanging roller, the roller frame is fixed to the top of the frame, the horizontal roller and the flanging roller are rotatably mounted on the roller frame, and the flanging roller is arranged at an angle, and the horizontal roller and the flanging roller abut against the top of the inner side of the belt.

[0010] The invention is further configured to include a material rack, a hopper, a baffle, a material distribution assembly, and a pressure sensor. The material rack is fixed to the top of the frame, the hopper is installed on the material rack, the baffle is fixed to the bottom of the material rack, and the projection of the baffle on the horizontal plane is located inside the projection of the bent edge of the belt on the horizontal plane. The material distribution assembly is set inside the hopper and is used to control the concentration position of the raw materials after they enter the hopper. The pressure sensor is set on the movable frame and is used to detect the spring force. The pressure sensor is externally connected to a control module.

[0011] The present invention is further configured such that: the material distribution component includes a material distribution plate, a rotating shaft and an adjusting motor; the hopper includes a feeding section and a guiding section arranged from top to bottom; the rotating shaft is rotatably mounted on the guiding section; the material distribution plate is fixed to the rotating shaft and movable at the upper end of the inner side of the guiding section; the adjusting motor is mounted on the outer wall of the guiding section and is connected to the rotating shaft for transmission; and the adjusting motor is electrically connected to the control module.

[0012] The present invention is further configured such that the arrangement spacing of the flanged units directly below the hopper is X1, and the spacing of the remaining flanged units is X2, where X1 < X2.

[0013] This invention also discloses a method for using a raw material feeding device for refractory brick production, including... S1. Raw material addition: The raw material is fed into the feeding section and separated from the guiding section by the material distribution plate in the guiding section; S2, belt conveyor: the raw material that leaves the guide section is blocked by the baffle and falls onto the bent side of the belt, and is continuously conveyed to the redirecting roller side by the belt. When the uneven accumulation of raw materials on the belt in S2 causes the belt to shift, the bent edge of the belt moves toward one side of the double cone centering roller and applies a counter-pressure. The double cone centering roller on this side transmits the counter-pressure to the spring through the movable frame. The spring's rebound force is used to resist the counter-pressure, thereby limiting the shift of the belt. After the center of gravity of the raw materials accumulated on the belt is even, the double cone centering roller pushes the belt back to center under the action of the spring's rebound force. Furthermore, when the bent edge of the belt continuously presses against the double-cone centering roller on one side and the timing module in the control module records a duration of more than 2 minutes, or when the pressure value of the pressure sensor exceeds the preset alarm value in the control module, the control module activates the built-in material distribution system, which adjusts the motor to change the tilt angle of the material distribution plate.

[0014] The present invention is further configured such that: the material distribution system specifically comprises adjusting the motor to drive the rotating shaft to rotate according to the pressure value F recorded by the pressure sensor, and the rotation angle is C degrees, the rotating shaft synchronously drives the material distribution plate to rotate, wherein C is positively correlated with F pressure, the distance between the projection of the bottom of the rotating material distribution plate on the horizontal plane and the projection of the pressurized double cone centering roller on the horizontal plane is X3, the distance between the projection of the top of the material distribution plate on the horizontal plane and the projection of the pressurized double cone centering roller on the horizontal plane is X4, X3 < X4; Furthermore, if the pressure sensor on one side does not detect pressure for 2 consecutive minutes, the angle of the distribution plate will no longer be adjusted.

[0015] This solution has at least the following beneficial effects: 1. By using a double-cone centering roller and springs, when the belt shifts due to the center of gravity of the raw material, the edge of the belt can press against the double-cone centering rollers to achieve belt centering and limiting effects. At the same time, under high lateral pressure, the springs can work with the double-cone centering rollers to give the belt some clearance, preventing the belt's bent edge from warping excessively. The spring force also provides a flexible resistance to the belt's displacement, and the resistance is positively correlated with the amount of belt offset. After the center of gravity of the belt returns to normal, the belt will automatically reset under the action of the spring's rebound force, thus automatically centering itself. In other words, this solution has the functions of flexible guidance and limiting, as well as automatic centering.

[0016] 2. In conjunction with the material distribution system, the material distribution control controls the concentrated area of ​​raw materials entering the belt from the source, so as to actively correct the center of gravity of the raw materials on the belt, accelerate the recovery of the center of gravity on the belt, reduce the pressure of the belt on the double cone centering roller, and, together with the centering effect of the centering unit, enable the belt to quickly return to the center position, so as to avoid the situation where the lateral pressure of the belt and the return force of the spring are stuck for a long time due to continuous center of gravity offset, that is, to avoid the situation where the belt fails to return to the center for a long time.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is the front view of the present invention; Figure 2 for Figure 1 Enlarged view of a section of the middle side panel; Figure 3 for Figure 2 Enlarged view of point A in the image; Figure 4 for Figure 1 Enlarged view of the mounting plate in the middle; Figure 5 for Figure 1 Side view structural diagram; Figure 6 for Figure 5 Enlarged side view of the structure; Figure 7 for Figure 6 Cross-sectional view of the central hopper; Figure 8 for Figure 7 The side view cross-sectional structure. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: The reference numerals in the accompanying drawings include: 110. Frame; 120. Drive roller; 130. Redirecting roller; 140. Belt; 141. Bending edge; 210. Side panel; 211. Inclined edge; 220. Mounting plate; 310. Double cone centering roller; 320. Movable frame; 330. Connecting screw; 340. Limit nut; 350. Guide cylinder; 360. Spring; 370. Guide rod; 380. Limit pin; 410. Idler frame; 420. Horizontal idler; 430. Flanged idler; 510. Material rack; 520. Hopper; 521. Guide section; 522. Feeding section; 530. Baffle; 610. Material distribution plate; 620. Rotating shaft; 630. Adjustment motor; 710. Pressure sensor.

[0020] Example: As attached Figure 1-8As shown, the present invention discloses a raw material feeding device for refractory brick production, including a frame 110, a flanging unit and a centering unit. A drive roller 120 and a redirecting roller 130 are respectively installed at both ends of the frame 110. A drive motor (not shown in the figure, it is a common drive component in a pulley assembly structure, and will not be described in detail here) is connected to the end of the drive roller 120. The drive roller 120 and the redirecting roller 130 are together fitted with a belt 140.

[0021] Multiple flanging units are arranged at intervals along the length of the frame 110. The flanging units abut against the top surface of the inner side of the belt 140 and are used to bend the belt 140 into a "V" shape. The flanging unit includes a roller frame 410, a horizontal roller 420 and a flanging roller 430. The roller frame 410 is fixed to the top of the frame 110. The horizontal roller 420 and the flanging roller 430 are rotatably mounted on the roller frame 410, and the flanging roller 430 is arranged at an angle. The horizontal roller 420 and the flanging roller 430 abut against the top of the inner side of the belt 140.

[0022] By using the horizontal idler 420 and the flanged idler 430 together, the cross-section of the belt 140 located at the top can be bent into a V-shape, thereby preventing the material from falling from the width of the belt 140 due to material collapse during the conveying process. This ensures the cleanliness of the environment around the conveyor belt and avoids material waste. The arrangement of multiple flanged units allows the horizontal idler 420 and the flanged idler 430 to evenly distribute the force on the belt 140, ensuring the bearing strength of the belt 140 and preventing the collapse in the middle. In addition, the frame 110 is also equipped with a tensioning wheel that acts on the bottom of the belt 140 to further tighten the belt 140.

[0023] The arrangement spacing of the flanged units directly below the hopper 520 is X1, and the spacing of the remaining flanged units is X2, where X1 < X2.

[0024] Since the raw material enters the belt 140 from the hopper 520, the belt 140 will also bear the kinetic energy of the raw material falling onto the belt 140. Therefore, by arranging the flange units more densely directly below the hopper 520, the bearing strength of the belt 140 is ensured, the belt 140 will not collapse locally, and the normal conveying of the belt 140 is guaranteed.

[0025] The centering unit includes a side plate 210 and a centering assembly. The side plate 210 is fixed to the top surface of the frame 110. The top of the side plate 210 has an inclined edge 211, on which the centering assembly is mounted. The centering assembly includes a double-cone centering roller 310, a movable frame 320, a connecting screw 330, a limiting nut 340, a guide cylinder 350, a spring 360, and a guide rod 370. The double-cone centering roller 310 is rotatably mounted on the movable frame 320, and... The belt 140 abuts against the bent edge 141. The connecting screw 330 and guide rod 370 are connected to the movable frame 320 and pass through the inclined edge 211. The guide cylinder 350 is fixed to the inclined edge 211, and the guide rod 370 is slidably fitted into the guide cylinder 350. The limit nut 340 is threaded onto the connecting screw 330, and the spring 360 is fitted onto the connecting screw 330 and located on the side of the inclined edge 211 closer to the movable frame 320. In this design, the spring 360 is in a compressed state when it is at its maximum length. That is, the belt 140 will only shift as a whole when the belt 140 deviates and the pressure F_pressure on the deviated side is greater than the sum of the elastic forces F_spring of the springs 360 on one side (in actual use, there may also be small local deviations, but this does not affect the centering principle and centering effect of this design), and the spring 360 will be further compressed until F_spring and F_pressure are the same, at which point the belt 140 tends to stabilize. The centering roller 310 consists of two cones with their bottom surfaces connected. The difference in linear velocity between their cone surfaces generates an axial thrust pointing towards the center of the belt, thereby achieving automatic belt centering. The centering unit also includes a mounting plate 220, which is fixed to the side wall of the frame 110. The side wall of the mounting plate 220 is provided with a centering assembly, which includes a double-cone centering roller 310, a movable frame 320, a connecting screw 330, a limiting nut 340, a guide cylinder 350, a spring 360, and a guide rod 370. The double-cone centering roller 310 is rotatably mounted on the movable frame 320 and abuts against the side of the bottom of the belt 140. The connecting screw 330 and the guide rod 370 are respectively connected to the movable frame 320 and pass through the mounting plate 220. The guide cylinder 350 is fixed to the mounting plate 220. The guide rod 370 is slidably fitted to the guide cylinder 350. The limiting nut 340 is threaded onto the connecting screw 330. The spring 360 is fitted onto the connecting screw 330 and is located on the side of the mounting plate 220 near the movable frame 320.

[0026] By using the centering components on the side plate 210 to guide the oblique centering of the bent edge 141 of the belt 140 and the centering components on the mounting plate 220 to guide the horizontal centering of the bottom horizontal edge of the belt 140, both the bent edge 141 and the bottom horizontal edge of the belt 140 can be subjected to a centering force, so as to avoid uneven force when the belt 140 deviates. Through the centering action of the upper and lower centering components, the force on the belt 140 is more uniform. At the same time, the arrangement of multiple centering components can reduce the force on a single centering component, that is, reduce the strength requirements of the centering components.

[0027] Two limit nuts 340 with opposite directions of rotation are fitted on the connecting screw 330. Limit pins 380 are installed on the connecting screw 330. The limit pins 380 abut against the limit nuts 340 that are away from the movable frame 320. By setting the limit pins 380, the position of the limit nuts 340 can be restricted, preventing the limit nuts 340 from coming off the connecting screw 330 due to loosening, thus ensuring the positional stability of the limit nuts 340.

[0028] It also includes a material rack 510, a hopper 520, a baffle 530, a material distribution assembly, and a pressure sensor 710. The material rack 510 is fixed to the top of the frame 110, the hopper 520 is installed on the material rack 510, the baffle 530 is fixed to the bottom of the material rack 510, and the projection of the baffle 530 on the horizontal plane is located inside the projection of the bent edge 141 of the belt 140 on the horizontal plane. The material distribution assembly is set inside the hopper 520 and is used to control the concentration position of the raw materials after entering the hopper 520. The pressure sensor 710 is set on the movable frame 320 and is used to detect the elastic force of the spring 360. The pressure sensor 710 is externally connected to a control module (the control module is a PLC controller).

[0029] In this case, the pressure sensor 710 can be arranged on only a few movable frames 320 to save costs. Without considering cost, one pressure sensor 710 is equipped on one movable frame 320 as a reference. Since the spring 360 is still in a compressed state when it is at its maximum length, the pressure value detected by the pressure sensor 710 at this time is set to 0. Therefore, when the belt 140 does not apply pressure to the double cone centering roller 310, the pressure sensor 710 will not detect a pressure value. When belt 140 deviates, the bent edge 141 and horizontal plate of belt 140 apply pressure to the double cone centering roller 310 on one side. When the pressure detected by pressure sensor 710 reaches the predetermined value or predetermined time of the control module, the center of gravity of the raw material on belt 140 may be deviated due to the angle of raw material feeding. When the batch of material is not fully fed, belt 140 has difficulty restoring the center of gravity by conveying and unloading the deviated raw material. At this time, the material distribution component controls the concentrated position of the raw material after entering belt 140 to intervene in the center of gravity of the raw material, thereby speeding up the restoration of the center of gravity of belt 140 by conveying and unloading. Due to the restoration of the center, the pressure F of belt 140 on double cone centering roller 310 decreases. At this time, the spring F of the centering unit is greater than the pressure F, that is, the spring F can drive belt 140 to center. Thus, by means of material distribution control, the centering effect of belt 140 can be restored more quickly, reducing the loss of lateral material leakage caused by belt 140 deviation.

[0030] The material distribution assembly includes a material distribution plate 610, a rotating shaft 620, and an adjusting motor 630. The hopper 520 includes a feeding section 522 and a guiding section 521 arranged from top to bottom. The rotating shaft 620 is rotatably mounted on the guiding section 521. The material distribution plate 610 is fixed to the rotating shaft 620 and is movable at the upper end of the inner side of the guiding section 521. The adjusting motor 630 is mounted on the outer wall of the guiding section 521 and is connected to the rotating shaft 620 for transmission. The adjusting motor 630 is electrically connected to the control module.

[0031] By adjusting the rotation of motor 630, the angle of the material distribution plate 610 in the vertical direction can be changed, thereby controlling the raw materials entering the guide section 521 from the feeding section 522 in a zoned manner, so that more raw materials can enter the opposite side of the center of gravity offset, thereby pulling the center of the raw materials on the belt 140 back.

[0032] A method for using a raw material feeding device for refractory brick production, including... S1. Raw material addition: The raw material is fed into the feeding section 522 and separated from the guiding section 521 by the dividing plate 610 in the guiding section 521. S2, conveyed by belt 140, the raw material that has left the guide section 521 is blocked by baffle 530 and falls onto the bent edge 141 of belt 140, and is continuously conveyed to the side of redirecting roller 130 by belt 140. When the uneven accumulation of raw materials on the belt 140 in S2 causes the belt 140 to shift, the bent edge 141 of the belt 140 moves toward the double cone centering roller 310 on one side and applies a counter-pressure. The double cone centering roller 310 on this side transmits the counter-pressure to the spring 360 through the movable frame 320. The rebound force of the spring 360 is used to resist the counter-pressure, so as to limit the shift of the belt 140. After the center of gravity of the raw materials accumulated on the belt 140 is uniform, the double cone centering roller 310 pushes the belt 140 back to the center under the action of the rebound force of the spring 360. Furthermore, when the bent edge 141 of the belt 140 continuously presses against the double cone centering roller 310 on one side and the timing module in the control module records a duration of more than 2 minutes, or when the pressure value of the pressure sensor 710 exceeds the preset alarm value in the control module, the control module starts the material distribution system, and the material distribution system changes the tilt angle of the material distribution plate 610 by adjusting the motor 630.

[0033] Specifically, the material distribution system is as follows: the motor 630 drives the rotating shaft 620 to rotate according to the pressure value F recorded by the pressure sensor 710, and the rotation angle is C degrees. The rotating shaft 620 synchronously drives the material distribution plate 610 to rotate, where C is positively correlated with F pressure. The distance between the projection of the bottom of the rotating material distribution plate 610 on the horizontal plane and the projection of the pressurized double cone centering roller 310 on the horizontal plane is X3, and the distance between the projection of the top of the material distribution plate 610 on the horizontal plane and the projection of the pressurized double cone centering roller 310 on the horizontal plane is X4, where X3 < X4. Furthermore, if the pressure sensor 710 on one side does not detect pressure for 2 minutes, the angle of the distribution plate 610 will no longer be adjusted.

[0034] Specifically, in one embodiment, when the material distribution plate 610 is in a numerical state, the rotation angle C is 0, and the rotatable angle of C is ±15°. Taking the belt 140 offset on one side and the rotation angle of C being 0-15° as an example, the rotation angle of C is divided into 10 equal division points, namely 1.5°, 3°, 4.5°...15°. The preset warning value in the control module is Fmax, F_pressure / Fmax*10. When its value is less than 10, it is rounded up and corresponds to the 10 equal division points to determine the required rotation angle of the material distribution plate 610. When F_pressure / Fmax*10 is greater than or equal to 10, the required rotation angle of the material distribution plate 610 is constant at 15 degrees. For example, when the value of F_pressure / Fmax*10 is 6.9, the corresponding interval point is 7, 7*1.5°=10.5°, so the required rotation angle of the material distribution plate 610 is 10.5°. Fmax can be measured manually. Different raw materials have different densities, resulting in different weights and lateral pressures. When manually setting Fmax, it can be set based on the force when the bending edge 141 of belt 140 is offset by 10cm along the bending direction. Excessive offset will cause a large height difference between the two sides of the bending edge 141 of belt 140, resulting in excessive lateral leakage of raw materials and making it difficult to correct. On the other hand, too small an offset distance will cause the material distribution mechanism to work frequently.

[0035] With the above settings, the material distribution mechanism can accurately distribute materials according to the unilateral offset of the belt 140, so as to accelerate the restoration of the center of gravity of the raw materials on the belt 140, and thus accelerate the restoration of the belt 140 to the center position.

[0036] The parts of the device not covered herein are the same as or can be implemented using existing technologies.

[0037] Among them, insert and sliding insert are mating bodies with holes, the cross section of the shaft or rod matches the hole, and the shaft or rod can slide relative to the hole. Threaded insert is a hole with threads, the shaft or rod is threaded, and the shaft or rod is connected to the mating body by screwing. Detachable installation can be by bolt thread connection or bolt and nut connection, etc., depending on what can be actually achieved.

[0038] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A raw material feeding device for refractory brick production, characterized in that: include The frame (110) has a drive roller (120) and a redirecting roller (130) installed at both ends respectively. The end of the drive roller (120) is connected to a drive motor. The drive roller (120) and the redirecting roller (130) are both fitted with a belt (140). Multiple flange units are arranged at intervals along the length of the frame (110). The flange units abut against the top surface of the inner side of the belt (140) and are used to bend the belt (140) into a "V" shape. The centering unit includes a side plate (210) and a centering assembly. The side plate (210) is fixed to the top surface of the frame (110). The top of the side plate (210) has an inclined edge (211). The centering assembly is installed on the inclined edge (211). The centering assembly includes a double-cone centering roller (310), a movable frame (320), a connecting screw (330), a limiting nut (340), a guide cylinder (350), a spring (360), and a guide rod (370). The double-cone centering roller (310) is rotatably mounted on the movable frame (320) and is connected to the centering assembly. The bent edges (141) of the belt (140) abut against each other. The connecting screw (330) and the guide rod (370) are respectively connected to the movable frame (320) and pass through the inclined edge (211). The guide cylinder (350) is fixed to the inclined edge (211). The guide rod (370) is slidably fitted to the guide cylinder (350). The limiting nut (340) is threaded onto the connecting screw (330). The spring (360) is fitted onto the connecting screw (330) and is located on the side of the inclined edge (211) close to the movable frame (320).

2. The raw material feeding device for refractory brick production as described in claim 1, characterized in that: The centering unit also includes a mounting plate (220), which is fixed to the side wall of the frame (110). The side wall of the mounting plate (220) is provided with a centering assembly, which includes a double-cone centering roller (310), a movable frame (320), a connecting screw (330), a limiting nut (340), a guide cylinder (350), a spring (360), and a guide rod (370). The double-cone centering roller (310) is rotatably mounted on the movable frame (320) and is aligned with the bottom of the belt (140). The sides of the two parts abut against each other. The connecting screw (330) and the guide rod (370) are respectively connected to the movable frame (320) and pass through the mounting plate (220). The guide cylinder (350) is fixed to the mounting plate (220). The guide rod (370) is slidably fitted to the guide cylinder (350). The limiting nut (340) is threaded onto the connecting screw (330). The spring (360) is fitted onto the connecting screw (330) and is located on the side of the mounting plate (220) near the movable frame (320).

3. The raw material feeding device for refractory brick production as described in claim 1, characterized in that: Two limiting nuts (340) with opposite directions of rotation are fitted on the connecting screw (330), and a limiting pin (380) is installed on the connecting screw (330). The limiting pin (380) abuts against the limiting nut (340) away from the movable frame (320).

4. The raw material feeding device for refractory brick production as described in claim 1, characterized in that: The flanging unit includes a roller frame (410), a horizontal roller (420), and a flanging roller (430). The roller frame (410) is fixed to the top of the frame (110). The horizontal roller (420) and the flanging roller (430) are rotatably mounted on the roller frame (410), and the flanging roller (430) is arranged at an angle. The horizontal roller (420) and the flanging roller (430) abut against the top of the inner side of the belt (140).

5. The raw material feeding device for refractory brick production as described in claim 1, characterized in that: It also includes a material rack (510), a hopper (520), a baffle (530), a material distribution assembly, and a pressure sensor (710). The material rack (510) is fixed to the top of the frame (110). The hopper (520) is installed on the material rack (510). The baffle (530) is fixed to the bottom of the material rack (510). The projection of the baffle (530) on the horizontal plane is located inside the projection of the bent edge (141) of the belt (140) on the horizontal plane. The material distribution assembly is set inside the hopper (520) and is used to control the concentration position of the raw materials after they enter the hopper (520). The pressure sensor (710) is set on the movable frame (320) and is used to detect the elastic force of the spring (360). The pressure sensor (710) is externally connected to a control module.

6. The raw material feeding device for refractory brick production as described in claim 5, characterized in that: The material distribution assembly includes a material distribution plate (610), a rotating shaft (620), and an adjusting motor (630). The hopper (520) includes a feeding section (522) and a guiding section (521) arranged from top to bottom. The rotating shaft (620) is rotatably mounted on the guiding section (521). The material distribution plate (610) is fixed to the rotating shaft (620) and is movable at the upper end of the inner side of the guiding section (521). The adjusting motor (630) is mounted on the outer wall of the guiding section (521) and is connected to the rotating shaft (620) for transmission. The adjusting motor (630) is electrically connected to the control module.

7. The raw material feeding device for refractory brick production as described in claim 5, characterized in that: The arrangement spacing of the flanged units directly below the hopper (520) is X1, and the spacing of the remaining flanged units is X2, where X1 < X2.

8. A method of using a raw material feeding device for refractory brick production as described in claim 6, characterized in that: include S1. Raw material addition: The raw material is fed into the feeding section (522) and separated from the feeding section (521) by the material distribution plate (610) in the guiding section (521). S2, conveyed by belt (140), the raw material that has left the guide section (521) is blocked by the baffle (530) and falls onto the bent side (141) of the belt (140), and is continuously conveyed to the side of the redirecting roller (130) by the belt (140); When the uneven accumulation of raw materials on the belt (140) in S2 causes the belt (140) to deviate, the bent edge (141) of the belt (140) moves toward the double cone centering roller (310) on one side and applies a counter-pressure. The double cone centering roller (310) on this side transmits the counter-pressure to the spring (360) through the movable frame (320). The rebound force of the spring (360) is used to resist the counter-pressure, so as to limit the deviation of the belt (140). After the center of gravity of the raw materials accumulated on the belt (140) is even, the double cone centering roller (310) pushes the belt (140) back to the center under the action of the rebound force of the spring (360). Furthermore, when the bent edge (141) of the belt (140) continuously presses against the double cone centering roller (310) on one side for more than 2 minutes, or when the pressure value of the pressure sensor (710) exceeds the preset warning value in the control module, the control module starts the built-in material distribution system, which changes the tilt angle of the material distribution plate (610) by adjusting the motor (630).

9. The method of using the raw material feeding device for refractory brick production as described in claim 8, characterized in that: The material distribution system is specifically designed as follows: the motor (630) drives the rotating shaft (620) to rotate according to the pressure value F recorded by the pressure sensor (710), and the rotation angle is C degrees. The rotating shaft (620) synchronously drives the material distribution plate (610) to rotate, where C is positively correlated with F pressure. The distance between the projection of the bottom of the rotating material distribution plate (610) on the horizontal plane and the projection of the pressurized double cone centering roller (310) on the horizontal plane is X3, and the distance between the projection of the top of the material distribution plate (610) on the horizontal plane and the projection of the pressurized double cone centering roller (310) on the horizontal plane is X4, where X3 < X4. Furthermore, if the pressure sensor (710) on one side does not detect pressure for 2 minutes, the angle of the distribution plate (610) will no longer be adjusted.

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