Batching regulation and control device of asphalt stirring equipment

Abstract

The invention discloses an asphalt stirring equipment ingredient regulation and control device, and relates to the technical field of ingredient mixing, the asphalt stirring equipment ingredient regulation and control device comprises a stirring box, a stirring mechanism for uniformly stirring proportioned materials is arranged in the stirring box, and a blending mechanism for controlling the proportioning transmission speed of the materials through the stirring speed of the stirring mechanism is arranged at the upper end of the stirring box; a discharging mechanism for controlling the discharging speed of the stirred material through the stirring speed of the stirring mechanism is arranged at the side end of the stirring box, the feeding speed and the discharging speed of the stirring device are adjusted through the rotating speed of the rotating frame, and in the rotating process of the rotating frame, a gravity block rotates along with the rotating frame to enable an electromagnetic coil to generate current; the larger the current is, the larger the electronic control valve is opened, the gravity block pulls the limiting rod to move, so that the expansion bag is shrunk, the rubber barrels are shrunk, gaps between the rubber barrels are increased, and the batching metering precision of the asphalt stirring equipment is more accurate.

Description

Technical Field

[0001] The invention relates to the technical field of batching and mixing, in particular to a batching control device for asphalt mixing equipment. Background Art

[0002] Asphalt mixing equipment is equipment used in the field of engineering construction. Asphalt mixing equipment is also called green environmental protection equipment. It is used in the field of engineering construction and has the advantages of first-level inertial dust removal plus second-level bag dust collector system and building negative pressure dust prevention design.

[0003] A Chinese patent discloses a batching and stirring device for modified asphalt waterproofing membrane (Announcement No. CN110975688A). Compared with the prior art, the device comprises: a batching chamber body; a mounting turntable provided at the bottom of the batching chamber body for supporting the batching chamber body; a material passing mechanism connected to the bottom of the batching chamber body through the mounting turntable; a conveying channel connected to the material passing mechanism; a stirring mechanism provided inside the batching chamber body; and a driving device provided at the upper part of the batching chamber body for driving the stirring mechanism. The stirring mechanism and the mounting turntable can achieve full mixing of the asphalt raw materials, increase the fluidity of the raw materials, and avoid the accumulation of raw materials to block the pipeline. This can overcome the problem of raw materials clogging the pipeline and significantly improve the production efficiency of modified asphalt waterproofing membranes.

[0004] The above-mentioned existing asphalt mixing equipment batching device, whether it is the measurement of aggregate, powder or asphalt, requires a high-precision weighing system to ensure the accuracy of the batching. However, the stirring speed and the discharge speed of the stirring device will affect the asphalt after the mixing ratio, resulting in the asphalt mixing equipment batching metering accuracy is not accurate enough. Therefore, the present invention provides an asphalt mixing equipment batching control device to solve the above-mentioned problems. Summary of the invention

[0005] The object of the present invention is to provide an asphalt mixing plant batching control device to solve the problem of inaccurate batching metering accuracy of the asphalt mixing plant mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A batching control device for asphalt mixing equipment includes a mixing box, wherein a stirring mechanism for uniformly stirring proportioned materials is arranged inside the mixing box, a mixing mechanism for controlling the proportioning transmission speed of the materials by the stirring speed of the stirring mechanism is arranged at the upper end of the mixing box, and a discharging mechanism for controlling the discharge speed of the mixed materials by the stirring speed of the stirring mechanism is arranged at the side end of the mixing box.

[0008] As a further solution of the present invention, the stirring mechanism includes a stirring motor, and the stirring motor is fixedly installed on the side end of the stirring box, a rotating frame is fixedly installed on the output end of the stirring motor, and the rotating frame is rotatably installed on the inner wall of the stirring box, a plurality of stirring rods are fixedly installed on the outer surface of the rotating frame, and a stirring blade is rotatably installed on the end of the stirring rod away from the rotating frame.

[0009] As a further solution of the present invention, a linkage rod is rotatably arranged on the inner wall of the stirring rod, and a transmission gear is fixedly installed on the end of the linkage rod away from the stirring plate. A limiting rod is slidably arranged on the inner wall of the rotating frame close to the limit block, and a limiting groove is provided on the outer wall of the limit rod close to the limit ring. A gear rod is fixedly installed on the inner wall of the limit groove close to the transmission gear, and the transmission gear is meshingly connected with the gear rod.

[0010] As a further solution of the present invention, a rotating circle is fixedly installed on the outer wall of the rotating frame close to the stirring motor, a plurality of control grooves are opened on the inner wall of the rotating circle, a plurality of gravity blocks are slidably installed on the inner wall of the control groove, a control rope is fixedly installed on one end of the gravity block away from the rotating circle, and the end of the control rope away from the gravity block is fixedly installed on one end of the limit rod close to the stirring motor.

[0011] As a further solution of the present invention, the mixing mechanism includes a plurality of mixing cylinders, and the mixing cylinders are all fixedly mounted on the upper end of the feeding port of the mixing box, a detection cylinder is fixedly mounted on the upper end of the inner wall of the mixing cylinder, and the detection cylinder obliquely passes through the side end of the mixing cylinder, a contactor is fixedly mounted on one end of the detection cylinder away from the mixing cylinder, and an alarm is fixedly mounted on the upper end of the contactor.

[0012] As a further solution of the present invention, an electronic control valve is fixedly installed on the lower end of the mixing cylinder, a transmission line is fixedly installed on the control end of the electronic control valve, an electromagnetic coil is fixedly installed on the end of the transmission line away from the electronic control valve, a mounting ring is fixedly installed on the outer wall of the mixing box close to the rotating circle, and the electromagnetic coil is fixedly installed on the inner wall of the mounting ring, and the mounting ring is rotatably sleeved on the outer wall of the rotating circle.

[0013] As a further scheme of the present invention, the discharging mechanism includes a discharging trough, and the discharging trough is fixedly installed at one end of the mixing box away from the mixing motor, rubber tubes are fixedly installed at the upper and lower ends of the discharging trough close to the mixing box, expansion bags are placed inside the rubber tubes, an air transfer tube is fixedly installed at the input end of the expansion bag, a connecting ring is fixedly installed at one end of the rotating frame close to the discharging trough, and the free end of the air transfer tube away from the expansion bag is fixedly connected to the connecting ring.

[0014] As a further solution of the present invention, a ventilation pipe is fixedly installed on the end of the connecting ring away from the air transmission tube, an air cylinder is fixedly installed on the inner wall of the rotating frame close to the connecting ring, and the ventilation pipe is fixedly installed on the output end of the air cylinder, a piston ring is slidably installed on the inner wall of the air cylinder, a pneumatic rod is fixedly installed on the end of the piston ring away from the connecting ring, and the pneumatic telescopic rod is fixedly installed on the end of the limit rod away from the control rope.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is used, the feeding and discharging speeds of the stirring device are adjusted by the rotation speed of the rotating frame. During the rotation of the rotating frame, the gravity block rotates along with the rotating frame to make the electromagnetic coil generate current, so that the electronic control valve opens. The greater the current, the greater the opening of the electronic control valve. The gravity block pulls the limit rod to move to shrink the expansion bag, shrink the rubber tube, and increase the gap between the rubber tubes, thereby making the asphalt mixing equipment more accurate in batching metering.

[0017] 2. When the present invention is used, the faster the rotating frame rotates, the greater the centrifugal force of the gravity block. The limit rod is pulled by the control rope to move, and the gear rod installed on the limit rod moves to drive the connected gear ring to start rotating. The linkage rod drives the stirring blade to start rotating, so that the stirring force of the asphalt mixing equipment is controlled by the stirring speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The present invention is a schematic diagram of the main structure of a batching control device for asphalt mixing equipment.

[0019] Figure 2 The figure is a schematic diagram of the internal structure of a mixing box in a batching control device of an asphalt mixing plant.

[0020] Figure 3 The present invention is a schematic diagram of the structure of a rotating frame in a batching control device of an asphalt mixing plant.

[0021] Figure 4 The present invention is a schematic diagram of the structure of a limit rod in a batching control device of an asphalt mixing equipment.

[0022] Figure 5 for Figure 4 Schematic diagram of the locally enlarged structure of A in the middle.

[0023] Figure 6 The present invention is a schematic diagram of the structure of an installation ring in a batching control device of an asphalt mixing equipment.

[0024] Figure 7 The diagram is a schematic diagram of the structure of a rotating circle in a batching control device of an asphalt mixing plant.

[0025] Figure 8The present invention is a schematic diagram of the structure of an air cylinder in a batching control device of an asphalt mixing equipment.

[0026] In the figure: 1. Mixing box;

[0027] 2. stirring mechanism; 201. stirring motor; 202. rotating frame; 203. stirring rod; 204. stirring blade; 205. linkage rod; 206. transmission gear;

[0028] 207, limit rod; 208, limit slot; 209, gear rod; 210, rotating circle; 211, control slot; 212, gravity block; 213, control rope; 214, guide frame;

[0029] 3. Dispensing mechanism; 301. Dispensing cylinder; 302. Detection cylinder; 303. Contactor; 304. Alarm;

[0030] 305, electronic control valve; 306, transmission line; 307, electromagnetic coil; 308, mounting ring;

[0031] 4. Discharging mechanism; 401. Discharging chute; 402. Rubber tube; 403. Expansion bag; 404. Air transfer tube;

[0032] 405, connecting ring; 406, ventilation pipe; 407, air cylinder; 408, piston ring; 409, pneumatic rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figures 1 to 8 In an embodiment of the present invention, an asphalt mixing equipment batching control device includes a mixing box 1, wherein a stirring mechanism 2 for uniformly stirring a proportioned material is arranged inside the mixing box 1, specifically, the stirring mechanism 2 controls the strength of stirring the material by the rotation speed of the stirring mechanism 2 during the rotation process, and a mixing mechanism 3 for controlling the proportioning transmission speed of the material by the stirring speed of the stirring mechanism 2 is arranged at the upper end of the mixing box 1, specifically, the mixing mechanism 3 controls the feeding speed of the mixing box 1 by the stirring efficiency of the stirring mechanism 2, and a discharging mechanism 4 for controlling the discharge speed of the mixed material by the stirring speed of the stirring mechanism 2 is arranged at the side end of the mixing box 1, specifically, the discharging speed of the mixing box 1 is controlled by the stirring efficiency of the stirring mechanism 2.

[0035] See also Figures 1 to 4The stirring mechanism 2 includes a stirring motor 201, and the stirring motor 201 is fixedly installed on the side end of the stirring box 1. A rotating frame 202 is fixedly installed on the output end of the stirring motor 201, and the rotating frame 202 is rotatably installed on the inner wall of the stirring box 1. A plurality of stirring rods 203 are fixedly installed on the outer surface of the rotating frame 202. The stirring rods 203 are arranged in a ring shape, and stirring blades 204 are rotatably installed on the ends of the stirring rods 203 away from the rotating frame 202. When the asphalt needs to be stirred and mixed, the stirring motor 201 is started, and the rotating frame 202 drives the stirring rods 203 to start stirring and mixing the materials in the mixing box 1.

[0036] See also Figures 1 to 5 A linkage rod 205 is rotatably provided on the inner wall of the stirring rod 203, and one end of the linkage rod 205 close to the stirring blade 204 is fixedly installed at the connection between the stirring blade 204 and the stirring rod 203, and a transmission gear 206 is fixedly installed on the end of the linkage rod 205 away from the stirring blade 204. When the transmission gear 206 starts to rotate, the linkage rod 205 drives the stirring blade 204 to start rotating, thereby changing the angle of the stirring blade 204, so that the stirring force of the stirring blade 204 on the material in the stirring box 1 begins to change, and a limit rod 205 is slidably provided on the inner wall of the rotating frame 202 close to the limit block. 07. A limiting groove 208 is provided on the outer wall of the limiting rod 207 near the limiting ring, and a gear rod 209 is fixedly installed on the inner wall of the limiting groove 208 near the transmission gear 206, and the transmission gear 206 is meshingly connected with the gear rod 209, so that when the limiting rod 207 moves, the limiting ring starts to move in the limiting groove 208, the transmission gear 206 starts to rotate, and the linkage rod 205 drives the stirring blade 204 to start rotating, so that the stirring angle of the stirring blade 204 is controlled by the movement of the limiting rod 207, the stirring area of ​​the stirring blade 204 on the material is changed, and the stirring force is changed.

[0037] See also Figures 1 to 7A rotating ring 210 is fixedly installed on the outer wall of the rotating frame 202 near the stirring motor 201, and a plurality of control grooves 211 are opened on the inner wall of the rotating ring 210. A plurality of gravity blocks 212 are slidably installed on the inner wall of the control grooves 211. The gravity blocks 212 are set as magnetic blocks in the prior art. A control rope 213 is fixedly installed on the end of the gravity block 212 away from the rotating ring 210, and the end of the control rope 213 away from the gravity block 212 is fixedly installed on the end of the limit rod 207 near the stirring motor 201. When the stirring motor 201 is started, the rotating frame 202 drives the rotating ring 210 to start rotating, and the gravity blocks in the rotating ring 210 are Under the action of centrifugal force, 212 starts to slide in the control groove 211, so that the gravity block 212 starts to move by pulling the limit rod 207 through the control rope 213. The faster the rotating frame 202 rotates, the farther the gravity block 212 pulls the limit rod 207 to move. A guide frame 214 is fixedly installed on the inner wall of the rotating circle 210 close to the rotating frame 202, and the control ropes 213 are all wound on the outer wall of the control frame. The guide frame 214 installed above allows the control rope 213 to change its moving direction through the guide frame 214 during movement. At the same time, the guide frame 214 prevents the control rope 213 from rubbing against the rotating rod and causing damage.

[0038] See also Figures 1 to 6 The mixing mechanism 3 includes a plurality of mixing cylinders 301, and the mixing cylinders 301 are fixedly mounted on the upper end of the material inlet of the mixing box 1, a detection cylinder 302 is fixedly mounted on the upper end of the inner wall of the mixing cylinder 301, and the detection cylinder 302 obliquely passes through the side end of the mixing cylinder 301, and a contactor 303 is fixedly mounted on the end of the detection cylinder 302 away from the mixing cylinder 301, and an alarm 304 is fixedly mounted on the upper end of the contactor 303. Specifically, when the material enters the mixing cylinder 301, the material enters the detection cylinder 302 and contacts the contactor 303. When the material is insufficient, the material in the detection cylinder 302 no longer contacts the contactor 303, and the alarm 304 sounds an alarm, so that the staff can replenish the material in time.

[0039] See also Figures 1 to 7The lower end of the mixing cylinder 301 is fixedly installed with an electronic control valve 305. The electronic control valve 305 is a valve controlled by the current size in the prior art. When there is no current, the electronic control valve 305 is in a closed state. When power is turned on, the greater the current, the greater the opening of the electronic control valve 305. The control end of the electronic control valve 305 is fixedly installed with a transmission wire 306. The end of the transmission wire 306 away from the electronic control valve 305 is fixedly installed with an electromagnetic coil 307. The outer wall of the mixing box 1 close to the rotating circle 210 is fixedly installed with The mounting circle 308 and the electromagnetic circle 307 are fixedly mounted on the inner wall of the mounting circle 308, and the mounting circle 308 is rotatably sleeved on the outer wall of the rotating circle 210. Because the gravity block 212 in the above-mentioned stirring mechanism 2 is a magnetic block, when the rotating circle 210 rotates, the magnetic block starts to rotate, and the magnetic field in the electromagnetic circle 307 starts to change, and the electromagnetic circle 307 generates current. At the same time, the faster the rotating circle 210 rotates, the greater the current intensity generated, so that the electronic control valve 305 receives a larger current and the electromagnetic control valve opens more.

[0040] See also Figures 1 to 8 The discharging mechanism 4 includes a discharging trough 401, and the discharging trough 401 is fixedly installed at one end of the mixing box 1 away from the mixing motor 201. The upper and lower ends of the discharging trough 401 close to the mixing box 1 are fixedly installed with rubber tubes 402, and the rubber tubes 402 fixed on the outer wall of the discharging trough 401 are made of hard rubber, and the rubber tubes 402 fixed on the inner wall of the discharging trough 401 are made of elastic rubber. An expansion bag 403 is placed inside the rubber tubes 402. The expansion bag 403 is set to an elastic plastic material. The expansion bag 403 is in an expanded state under normal conditions. The rubber tube 4 02 are in contact with each other. When the gas is extracted from the expansion bag 403, the expansion bag 403 begins to shrink, and the rubber tubes 402 are no longer in contact with each other. There is a discharge gap between the rubber tubes 402, and the material in the mixing box 1 is discharged through the discharge gap. An air transfer tube 404 is fixedly installed at the input end of the expansion bag 403, and a connecting ring 405 is fixedly installed at one end of the rotating frame 202 close to the discharge trough 401, and the free end of the air transfer tube 404 is fixedly connected to the connecting ring 405. The connecting ring 405 enables the air transfer tube 404 to remain ventilated during the rotation of the rotating rod.

[0041] See also Figure 3 , Figure 8A ventilation pipe 406 is fixedly installed on one end of the connecting ring 405 away from the air transfer pipe 404, and a gas cylinder 407 is fixedly installed on the inner wall of the rotating frame 202 close to the connecting ring 405, and the ventilation pipe 406 is fixedly installed on the output end of the gas cylinder 407. When the gas cylinder 407 rotates with the rotating frame 202, the gas in the gas cylinder 407 is transmitted to the gas transfer pipe 404 through the ventilation pipe 406 to maintain the ventilation state. A piston ring 408 is slidably installed on the inner wall of the gas cylinder 407, and a pneumatic rod 409 is fixedly installed on the end of the piston ring 408 away from the connecting ring 405, and the pneumatic telescopic rod is fixedly installed on the end of the limit rod 207 away from the control rope 213. Specifically, when the rotating rod rotates, When the gravity block 212 starts to move by pulling the limit rod 207 through the control rope 213 under the action of centrifugal force, the limit rod 207 causes the pneumatic rod 409 to drive the piston ring 408 to move, so that the gas in the expansion bag 403 enters the air cylinder 407 through the air transfer tube 404 and the ventilation tube 406, shrinking the rubber tube 402 and increasing the gap between the rubber tubes 402, thereby controlling the discharge speed of the mixing box 1 through the rotation speed of the rotating frame 202. A control spring is fixedly installed on one end of the piston ring 408 away from the pneumatic rod 409. When the force of the piston ring 408 pulling the control spring matches the centrifugal force of the gravity block 212, the limit rod 207 no longer moves.

[0042] The working principle of the present invention is: when it is necessary to mix and stir asphalt, the required material output pipes are fixedly installed on the upper end of the mixing barrel 301, the stirring motor 201 is started, and the rotating frame 202 starts to rotate. When the rotating frame 202 starts to rotate, the rotating frame 202 drives the rotating circle 210 to start rotating. Under the action of centrifugal force, the gravity block 212 in the rotating circle 210 pulls the limit rod 207 to move through the control rope 213, and the gear rod 209 installed on the limit rod 207 moves to drive the connecting gear ring to start rotating, and the linkage rod 205 drives the stirring blade 204 to start rotating, so that the stirring intensity of the asphalt stirring equipment is controlled by the stirring speed;

[0043] At the same time, during the rotation of the rotating frame 202, the gravity block 212 rotates along with the rotating frame 202. The gravity block 212 is a magnetic block, so that the magnetic field of the gravity block 212 changes continuously during the rotation, and generates an electromagnetic field with the electromagnetic coil 307, so that the electromagnetic coil 307 generates current. The faster the rotation speed, the greater the current generated, and the greater the current entering the electronic control valve 305. Therefore, the material entry speed is controlled by the rotation speed of the rotating frame 202, so that the batching metering accuracy of the asphalt mixing equipment is more accurate.

[0044] When the gravity block 212 pulls the limit rod 207 to move under the action of centrifugal force, the pneumatic rod 409 drives the piston ring 408 to move, so that the gas in the expansion bag 403 enters the air cylinder 407 through the air transfer pipe 404 and the ventilation pipe 406, and the expansion bag 403 contracts, so that the rubber tube 402 shrinks and the gap between the rubber tubes 402 increases, thereby controlling the discharging speed of the mixing box 1 through the rotation speed of the rotating frame 202, and the discharging speed is proportional to the feed ratio speed.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An asphalt mixing equipment batching control device, comprising a mixing box (1), characterized in that: The interior of the mixing box (1) is provided with a stirring mechanism (2) for uniformly stirring the proportioned materials; the upper end of the mixing box (1) is provided with a mixing mechanism (3) for controlling the proportioned transmission speed of the materials by the stirring speed of the stirring mechanism (2); and the side end of the mixing box (1) is provided with a discharging mechanism (4) for controlling the discharge speed of the stirred materials by the stirring speed of the stirring mechanism (2).

2. The asphalt mixing equipment batching control device according to claim 1, characterized in that: The stirring mechanism (2) comprises a stirring motor (201), and the stirring motor (201) is fixedly mounted on the side end of the stirring box (1); a rotating frame (202) is fixedly mounted on the output end of the stirring motor (201), and the rotating frame (202) is rotatably mounted on the inner wall of the stirring box (1); a plurality of stirring rods (203) are fixedly mounted on the outer surface of the rotating frame (202), and a stirring blade (204) is rotatably mounted on one end of the stirring rod (203) away from the rotating frame (202).

3. The asphalt mixing equipment batching control device according to claim 2, characterized in that: A linkage rod (205) is rotatably arranged on the inner wall of the stirring rod (203); a transmission gear (206) is fixedly installed on one end of the linkage rod (205) away from the stirring blade (204); a limiting rod (207) is slidably arranged on the inner wall of the rotating frame (202) close to the limiting block; a limiting groove (208) is provided on the outer wall of the limiting rod (207) close to the limiting ring; a gear rod (209) is fixedly installed on the inner wall of the limiting groove (208) close to the transmission gear (206), and the transmission gear (206) is meshingly connected with the gear rod (209).

4. The asphalt mixing equipment batching control device according to claim 3, characterized in that: A rotating ring (210) is fixedly mounted on the outer wall of the rotating frame (202) close to the stirring motor (201), a plurality of control grooves (211) are provided on the inner wall of the rotating ring (210), a plurality of gravity blocks (212) are slidably mounted on the inner wall of the control grooves (211), a control rope (213) is fixedly mounted on one end of the gravity block (212) away from the rotating ring (210), and the end of the control rope (213) away from the gravity block (212) is fixedly mounted on one end of the limit rod (207) close to the stirring motor (201).

5. The asphalt mixing equipment batching control device according to claim 3, characterized in that: The mixing mechanism (3) comprises a plurality of mixing cylinders (301), and the mixing cylinders (301) are all fixedly mounted on the upper end of the material inlet of the mixing box (1); a detection cylinder (302) is fixedly mounted on the upper end of the inner wall of the mixing cylinder (301), and the detection cylinder (302) obliquely passes through the side end of the mixing cylinder (301); a contactor (303) is fixedly mounted on one end of the detection cylinder (302) away from the mixing cylinder (301), and an alarm (304) is fixedly mounted on the upper end of the contactor (303).

6. The asphalt mixing equipment batching control device according to claim 5, characterized in that: An electronic control valve (305) is fixedly installed at the lower end of the mixing cylinder (301), a transmission line (306) is fixedly installed at the control end of the electronic control valve (305), an electromagnetic coil (307) is fixedly installed at one end of the transmission line (306) away from the electronic control valve (305), a mounting ring (308) is fixedly installed on the outer wall of the mixing box (1) close to the rotating circle (210), and the electromagnetic coil (307) is fixedly installed on the inner wall of the mounting ring (308), and the mounting ring (308) is rotatably sleeved on the outer wall of the rotating circle (210).

7. The asphalt mixing equipment batching control device according to claim 3, characterized in that: The discharging mechanism (4) comprises a discharging trough (401), and the discharging trough (401) is fixedly mounted at one end of the mixing box (1) away from the mixing motor (201), and rubber tubes (402) are fixedly mounted at both upper and lower ends of the discharging trough (401) close to the mixing box (1), and expansion bags (403) are placed inside the rubber tubes (402), and an air transfer tube (404) is fixedly mounted at the input end of the expansion bag (403), and a connecting ring (405) is fixedly mounted at one end of the rotating frame (202) close to the discharging trough (401), and the free end of the air transfer tube (404) away from the expansion bag (403) is fixedly connected to the connecting ring (405).

8. The asphalt mixing equipment batching control device according to claim 7, characterized in that: A ventilation pipe (406) is fixedly installed on one end of the connecting ring (405) away from the air transmission tube (404), an air cylinder (407) is fixedly installed on the inner wall of the rotating frame (202) close to the connecting ring (405), and the ventilation pipe (406) is fixedly installed on the output end of the air cylinder (407), a piston ring (408) is slidably installed on the inner wall of the air cylinder (407), a pneumatic rod (409) is fixedly installed on one end of the piston ring (408) away from the connecting ring (405), and the pneumatic telescopic rod is fixedly installed on one end of the limiting rod (207) away from the control rope (213).

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