Quantitative feeding mechanism for reaction kettle

Abstract

The utility model relates to the field of reaction kettles, in particular to a quantitative feeding mechanism for a reaction kettle.The quantitative feeding mechanism comprises a mounting frame, the mounting frame is fixedly connected with a rack of the reaction kettle.The mounting frame is detachably provided with a hopper and a feeding pipeline, and a first connecting pipe is arranged between the hopper and the feeding pipeline in a communicating mode; a second connecting pipe is arranged at the bottom of the feeding pipeline in a communicating manner, the second connecting pipe extends into the inner cavity of the reaction kettle, and a feeding screw rod is rotationally mounted in the feeding pipeline; and an operation panel, a material guiding module, a first motor, a discharging switch module, a weighing module and a control module. According to the reaction kettle, the convenience of adding a powder raw material into the reaction kettle by an operator can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of reactors, and in particular to a quantitative feeding mechanism for a reactor. Background Art

[0002] Reactors are broadly understood as containers for physical or chemical reactions. Through the structural design and parameter configuration of the container, the heating, evaporation, cooling and low-speed mixing functions required by the process are realized. Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, medicine, and food. They are pressure vessels used to complete processes such as vulcanization, nitration, hydrogenation, hydrocarbonization, polymerization, and condensation, such as reactors, reaction pots, decomposition pots, polymerization kettles, etc.; the materials are generally carbon-manganese steel, stainless steel, zirconium, nickel-based (Hastelloy, Monel, Inconel) alloys and other composite materials.

[0003] In the prior art, the reactor needs to be weighed manually before adding powder materials, and then added at the appropriate time. Due to the lack of a quantitative feeding mechanism, the subsequent work intensity is high, and long-term direct contact with chemicals will cause adverse effects on the health of the workers. After weighing, the traditional reactor needs to be manually added with powder materials, which is time-consuming and labor-intensive and has poor practicality. Utility Model Content

[0004] In order to improve the convenience for operators to add powder materials to a reactor, the present application provides a quantitative feeding mechanism for a reactor.

[0005] The quantitative feeding mechanism for a reactor provided in the present application adopts the following technical solution:

[0006] A quantitative feeding mechanism for a reactor, comprising a mounting frame, the mounting frame is fixedly connected to a frame of the reactor, a hopper and a feeding pipe are detachably mounted on the mounting frame, a first connecting pipe is connected between the hopper and the feeding pipe, a second connecting pipe is connected at the bottom of the feeding pipe, the second connecting pipe extends into the inner cavity of the reactor, a feeding screw is rotatably mounted in the feeding pipe; and:

[0007] An operation panel, fixedly mounted on the mounting frame, for inputting a set weight signal and a start signal;

[0008] A material guiding module, installed in the hopper, with a signal input end connected to a signal output end of the operation panel, for receiving the start signal and guiding the material in the hopper to flow into the first connecting pipe;

[0009] A first motor is installed on the feeding pipe, a driving end is fixedly connected to the feeding screw, a signal input end is connected to the signal output end of the operation panel, and is used to receive the start signal and drive the feeding screw to rotate at a constant speed;

[0010] A discharge switch module, installed on the first connecting pipe, used for receiving the start signal and connecting with the first connecting pipe;

[0011] A weighing module, mounted on the mounting frame, for detecting the weight of the material flowing out of the hopper and outputting a discharge weight signal;

[0012] The control module is connected to the weighing module and the signal output end of the operation panel, and is used to control the material guide module to close when the discharge weight reaches the set weight, control the discharge switch module to turn off the first connecting pipe, and control the first motor to stop after a set time.

[0013] By adopting the above technical solution, before feeding, the operator can put the material to be fed into the hopper in advance, and input the set weight signal and the start signal through the operation panel; after receiving the start signal, the discharging switch module connects the first connecting pipe and the feeding pipe, and at the same time, the material guiding module guides the material in the hopper to flow into the feeding pipe through the first connecting pipe, and the first motor drives the feeding screw in the feeding pipe to rotate at a uniform speed, and the spiral blades of the feeding screw drive the material to flow into the reactor through the feeding screw and the second connecting pipe; during the discharging process, the weighing module detects the weight of the material sent out through the hopper. When the weight of the outflowing material reaches the set weight, the control module controls the material guiding module to stop guiding the material in the hopper, and at the same time controls the discharging switch module to turn off the first connecting pipe, and stop conveying the material to the feeding pipe. After the set time, the first motor stops driving the feeding screw, and the feeding screw continues to run for the set time after the feeding stops, so that the residual material in the feeding screw can be completely fed out. By matching and using the weighing module, the control module, the first motor, the material guide module and the discharge switch module, materials can be added to the reactor in a quantitative manner, reducing the steps for operators to weigh materials and improving the convenience of operators in using the reactor.

[0014] Preferably, the material guiding module comprises a second motor and a material guiding auger extending into the first connecting pipe, the material guiding auger comprises a connecting rod, a cover plate is detachably mounted at the opening of the hopper, and the connecting rod is rotatably mounted on the cover plate;

[0015] The cylinder body of the second motor is fixedly mounted on the top of the cover plate, and the driving shaft of the second motor is fixedly connected to the connecting rod.

[0016] By adopting the above technical solution, during the feeding process, the second motor drives the material guide auger to rotate, so that the powder material in the hopper can quickly flow to the first connecting pipe along the spiral blades of the material guide auger, thereby improving the smoothness of the powder material outflow.

[0017] Preferably, the first connecting pipe includes a first pipe portion and a second pipe portion, the first pipe portion is communicated with the bottom of the hopper, and the second pipe portion is communicated with the feeding pipeline;

[0018] The discharge switch module comprises a connecting piece, the two ends of which are respectively connected to the first tube part and the second tube part, a shielding round rod is rotatably installed in the connecting piece, the shielding round rod is located between the first tube part and the second tube part, and a feeding hole is provided on the shielding round rod;

[0019] The connecting member is fixedly connected to a third motor, and the driving end of the third motor is fixedly connected to the shielding round rod.

[0020] By adopting the above technical solution, when adding powder material, the third motor receives the start signal and drives the shielding round rod to rotate until the two ends of the feeding hole are connected with the first pipe part and the second pipe part, so as to ensure the smooth outflow of the powder material; when the amount of powder material added reaches the set amount, the third motor drives the shielding round rod to rotate until the two ends of the feeding hole are misaligned with the first pipe part and the second pipe part, so as to reduce the occurrence of powder material flowing out of the first connecting pipe and improve the accuracy of quantitative addition of materials.

[0021] Preferably, an extension portion is provided outwardly extending from the opening edge of the hopper, and the weighing module comprises:

[0022] A weighing sensor, the bottom of which is fixedly connected to the mounting frame, and the top of which is fixedly connected to the extension portion, for detecting the weight of the hopper and outputting a hopper weight signal;

[0023] The single chip microcomputer has a signal input terminal connected to a signal output terminal of the weighing sensor, and is used to receive the hopper weight signal and output the discharge weight signal.

[0024] By adopting the above technical solution, during the feeding process, the weighing sensor detects the weight of the hopper in real time, and the single-chip microcomputer calculates the discharge weight of the material according to the change in the hopper weight, thereby achieving the technical effect of automatically detecting the discharge weight.

[0025] Preferably, the control module includes a comparator chip and a delay switch, the signal input end of the comparator chip is connected to the single chip microcomputer and the signal output end of the operation panel, the comparator chip receives the discharge weight signal and the set weight signal, and outputs a closing signal when the discharge weight reaches the set weight;

[0026] The signal input ends of the second motor and the third motor are connected to the signal output end of the comparator chip, the second motor receives the closing signal and stops driving the material guide auger to rotate, and the third motor receives the closing signal and drives the material passing hole to rotate to be misaligned with the first pipe part and the second pipe part;

[0027] The delay switch is connected in series between the comparator chip and the first motor. The delay switch receives the shutdown signal and controls the first motor to stop driving after a set time.

[0028] By adopting the above technical scheme, when the discharge weight reaches the set weight, the comparator chip outputs a shutdown signal, and the second motor and the third motor stop driving immediately after receiving the shutdown signal. Since a delay switch is connected in series between the first motor and the comparator chip, the feeding screw can be kept rotating at a constant speed to deliver the residual material in the feeding pipe, and automatically shut down after the set delay time. The technical effect of quantitative feeding can be achieved, and the first motor, the second motor, and the third motor are automatically shut down after the material feeding amount reaches the set amount, which can effectively improve the degree of automation of the quantitative feeding mechanism.

[0029] Preferably, the cover plate is provided with a slide groove, a feed port is provided through the bottom of the slide groove, and a sealing door is slidably connected in the slide groove;

[0030] The two opposite sides of the slide groove are respectively provided with limiting grooves, and the two sides of the sealing door are respectively fixedly connected with limiting protrusions, and the two limiting protrusions are respectively slidably arranged in the two limiting grooves.

[0031] By adopting the above technical solution, when it is necessary to put materials into the hopper, the operator can push the sealing door open to expose the feed port; after the materials are put in, the operator can push the sealing door to cover the top of the feed port to reduce the possibility of material contamination. The limit block and the limit groove are matched with each other to reduce the possibility of the sealing door falling.

[0032] In summary, the quantitative feeding mechanism for a reactor of the present application includes at least one of the following beneficial technical effects:

[0033] 1. Before feeding, the operator can put the material to be fed into the hopper in advance, and input the set weight signal and the start signal through the operation panel; after receiving the start signal, the discharging switch module connects the first connecting pipe and the feeding pipe, and at the same time, the material guiding module guides the material in the hopper to flow into the feeding pipe through the first connecting pipe, and the first motor drives the feeding screw in the feeding pipe to rotate at a uniform speed, and the spiral blade of the feeding screw drives the material to flow into the reactor through the feeding screw and the second connecting pipe. During the discharging process, the weighing module detects the weight of the material sent out through the hopper. When the weight of the outflowing material reaches the set weight, the control module controls the material guiding module to stop guiding the material in the hopper, and at the same time controls the discharging switch module to turn off the first connecting pipe and stop conveying the material to the feeding pipe. After the set time, the first motor stops driving the feeding screw. The feeding screw continues to run for the set time after stopping feeding, and the residual material in the feeding screw can be completely sent out, which can achieve the technical effect of quantitative feeding of materials, reduce the operation of operators manually weighing and adding materials, and improve the convenience of operators adding materials to the reactor;

[0034] 2. During the feeding process, the second motor drives the material guide auger to rotate, so that the powder material in the hopper can quickly flow to the first connecting pipe along the spiral blades of the material guide auger, thereby improving the smoothness of the powder material outflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the embodiment of the present application for illustrating the overall structure of the quantitative feeding mechanism.

[0036] Figure 2 It is a schematic diagram of an embodiment of the present application for illustrating the overall structure of a connector.

[0037] Figure 3 It is a schematic diagram used to illustrate the overall structure of the hopper in an embodiment of the present application.

[0038] Figure 4 It is a schematic diagram of an embodiment of the present application for demonstrating the internal signal transmission of a quantitative feeding mechanism.

[0039] Explanation of the reference numerals: 1. Mounting frame; 11. Operation panel; 2. Hopper; 21. First connecting pipe; 22. Cover plate; 221. Slide; 222. Feed port; 223. Sealing door; 3. Feeding pipe; 31. Second connecting pipe; 32. Feeding screw; 33. First motor; 4. Material guiding module; 41. Second motor; 42. Material guiding auger; 43. Connecting rod; 5. Discharging switch module; 51. Connecting piece; 52. Blocking round rod; 53. Feeding hole; 54. Third motor; 6. Weighing sensor. DETAILED DESCRIPTION

[0040] The following is combined with Figure 1-4 This application is described in further detail.

[0041] Example

[0042] The present application embodiment discloses a quantitative feeding mechanism for a reaction kettle. Figure 1-Figure 4 , including a mounting frame 1, which is fixedly connected to the frame of the reactor, and a hopper 2 and a feeding pipe 3 are detachably mounted on the mounting frame 1, a first connecting pipe 21 is connected between the hopper 2 and the feeding pipe 3, a second connecting pipe 31 is connected at the bottom of the feeding pipe 3, the second connecting pipe 31 extends into the inner cavity of the reactor, and a feeding screw 32 is rotatably installed in the feeding pipe 3.

[0043] And: an operation panel 11, fixedly mounted on the mounting frame 1, for inputting a set weight signal and a start signal; a material guiding module 4, mounted in the hopper 2, with a signal input end connected to a signal output end of the operation panel 11, for receiving a start signal and guiding the material in the hopper 2 to flow into the first connecting pipe 21; a first motor 33, mounted on the feeding pipe 3, with a driving end fixedly connected to the feeding screw 32, and a signal input end connected to a signal output end of the operation panel 11, for receiving a start signal and driving the feeding screw 32 to rotate at a uniform speed; a discharge switch module 5, mounted on the first connecting pipe 21, for receiving a start signal and connecting the first connecting pipe 21; a weighing module, mounted on the mounting frame 1, for detecting the weight of the material flowing out through the hopper 2 and outputting a discharge weight signal; a control module, connected to the weighing module and the signal output end of the operation panel 11, for controlling the material guiding module 4 to close when the discharge weight reaches the set weight, controlling the discharge switch module 5 to shut off the first connecting pipe 21, and controlling the first motor 33 to stop after a set time.

[0044] Before feeding, the operator can put the material to be fed into the hopper 2 in advance, and input the set weight signal and the start signal through the operation panel 11; after receiving the start signal, the discharging switch module 5 connects the first connecting pipe 21 and the feeding pipe 3, and at the same time, the material guiding module 4 guides the material in the hopper 2 to flow into the feeding pipe 3 through the first connecting pipe 21, and the first motor 33 drives the feeding screw 32 in the feeding pipe 3 to rotate at a uniform speed, and the spiral blades of the feeding screw 32 drive the material to flow into the reactor through the feeding screw 32 and the second connecting pipe 31; during the discharging process, the weighing module detects the weight of the material sent out through the hopper 2. When the weight of the outflowing material reaches the set weight, the control module controls the material guiding module 4 to stop guiding the material in the hopper 2, and at the same time controls the discharging switch module 5 to turn off the first connecting pipe 21, and stop conveying the material to the feeding pipe 3. After the set time, the first motor 33 stops driving the feeding screw 32. The feeding screw 32 continues to run for a set time after the feeding stops, and the residual material in the feeding screw 32 can be completely sent out.

[0045] By matching and using the weighing module, the control module, the first motor 33, the material guiding module 4 and the material discharging switch module 5, materials can be added to the reactor in a quantitative manner, reducing the steps for operators to weigh materials and improving the convenience of operators in using the reactor.

[0046] Reference Figure 1 The material guiding module 4 includes a second motor 41 and a material guiding auger 42 extending into the first connecting tube 21, the material guiding auger 42 includes a connecting rod 43, a cover plate 22 is detachably mounted at the opening of the hopper 2, and the connecting rod 43 is rotatably mounted on the cover plate 22; the cylinder body of the second motor 41 is fixedly mounted on the top of the cover plate 22, and the driving shaft of the second motor 41 is fixedly connected to the connecting rod 43.

[0047] During the feeding process, the second motor 41 drives the material guiding auger 42 to rotate, so that the powder material in the hopper 2 can quickly flow to the first connecting pipe 21 along the spiral blades of the material guiding auger 42, thereby improving the smoothness of the powder material outflow.

[0048] Reference Figure 2 The first connecting pipe 21 includes a first pipe portion and a second pipe portion, the first pipe portion is connected to the bottom of the hopper 2, and the second pipe portion is connected to the feeding pipe 3; the discharge switch module 5 includes a connecting piece 51, the two ends of the connecting piece 51 are respectively connected to the first pipe portion and the second pipe portion, a blocking round rod 52 is rotatably installed in the connecting piece 51, the blocking round rod 52 is located between the first pipe portion and the second pipe portion, and a passing hole 53 is provided on the blocking round rod 52; a third motor 54 is fixedly connected to the connecting piece 51, and the driving end of the third motor 54 is fixedly connected to the blocking round rod 52.

[0049] When adding powder material, the third motor 54 receives the start signal and drives the blocking rod 52 to rotate until the two ends of the feeding hole 53 are connected with the first tube part and the second tube part, so as to ensure the smooth flow of powder material; when the amount of powder material added reaches the set amount, the third motor 54 drives the blocking rod 52 to rotate until the two ends of the feeding hole 53 are misaligned with the first tube part and the second tube part, so as to reduce the occurrence of powder material flowing out of the first connecting tube 21 and improve the accuracy of quantitative material addition.

[0050] Reference Figure 1 and Figure 4 An extension portion is extended outward from the opening edge of the hopper 2, and the weighing module includes: a weighing sensor 6, the bottom of which is fixedly connected to the mounting frame 1, and the top of which is fixedly connected to the extension portion, for detecting the weight of the hopper 2 and outputting a weight signal of the hopper 2; a single-chip microcomputer, the signal input end of which is connected to the signal output end of the weighing sensor 6, for receiving the weight signal of the hopper 2 and outputting a discharge weight signal.

[0051] During the feeding process, the weighing sensor 6 detects the weight of the hopper 2 in real time, and the single chip microcomputer calculates the discharge weight of the material according to the weight change of the hopper 2, thereby achieving the technical effect of automatically detecting the discharge weight.

[0052] Reference Figure 4 The control module includes a comparator chip and a delay switch. The signal input end of the comparator chip is connected to the signal output end of the single-chip microcomputer and the operation panel 11. The comparator chip receives the discharge weight signal and the set weight signal, and outputs a closing signal when the discharge weight reaches the set weight; the signal input end of the second motor 41 and the third motor 54 is connected to the signal output end of the comparator chip. The second motor 41 receives the closing signal and stops driving the material guide auger 42 to rotate. The third motor 54 receives the closing signal and drives the material passing hole 53 to rotate to be misaligned with the first pipe part and the second pipe part; the delay switch is connected in series between the comparator chip and the first motor 33. The delay switch receives the closing signal and controls the first motor 33 to stop driving after the set time.

[0053] When the discharge weight reaches the set weight, the comparator chip outputs a shutdown signal, and the second motor 41 and the third motor 54 stop driving immediately after receiving the shutdown signal. Since a delay switch is connected in series between the first motor 33 and the comparator chip, the feeding screw 32 can be kept rotating at a constant speed to deliver the residual material in the feeding pipe 3, and automatically shut down after the set delay time. The technical effect of quantitative feeding and automatically shutting down the first motor 33, the second motor 41, and the third motor 54 after the material feeding amount reaches the set amount can be achieved, which can effectively improve the degree of automation of the quantitative feeding mechanism.

[0054] Reference Figure 3 The cover plate 22 is provided with a slide groove 221, a feed port 222 is opened through the bottom of the slide groove 221, and a sealing door 223 is slidably connected in the slide groove 221; limiting grooves are respectively provided on the opposite sides of the slide groove 221, and limiting protrusions are respectively fixedly connected on both sides of the sealing door 223, and the two limiting protrusions are respectively slidably set in the two limiting grooves.

[0055] When it is necessary to put materials into the hopper 2, the operator can push the sealing door 223 open to expose the feed port 222; after the materials are put in, the operator can push the sealing door 223 to cover the top of the feed port 222 to reduce the possibility of material contamination. The limiting protrusion and the limiting groove cooperate with each other to reduce the possibility of the sealing door 223 falling off.

[0056] The implementation principle of a quantitative feeding mechanism for a reactor in the embodiment of the present application is as follows: before feeding, the operator can put the material to be fed into the hopper 2 in advance, and input the set weight signal and the start signal through the operation panel 11; after receiving the start signal, the discharging switch module 5 connects the first connecting pipe 21 and the feeding pipe 3, and at the same time, the material guiding module 4 guides the material in the hopper 2 to flow into the feeding pipe 3 through the first connecting pipe 21, and the first motor 33 drives the feeding screw 32 in the feeding pipe 3 to rotate at a uniform speed, and the spiral blades of the feeding screw 32 drive the material to flow into the reactor through the feeding screw 32 and the second connecting pipe 31. During the discharging process, the material is weighed. The weighing module detects the weight of the material sent out through the hopper 2. When the weight of the outflowing material reaches the set weight, the control module controls the material guiding module 4 to stop guiding the material in the hopper 2, and at the same time controls the discharge switch module 5 to cut off the first connecting pipe 21, and stops conveying the material to the feeding pipe 3. After the set time, the first motor 33 stops driving the feeding screw 32. The feeding screw 32 continues to run for a set time after stopping feeding, and the remaining material in the feeding screw 32 can be completely fed out, which can achieve the technical effect of quantitatively adding materials, reduce the operation of operators manually weighing and adding materials, and improve the convenience of operators adding materials to the reactor.

[0057] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A quantitative feeding mechanism for a reactor, characterized in that: The invention comprises a mounting frame (1), wherein the mounting frame (1) is fixedly connected to a frame of a reaction kettle, a hopper (2) and a feeding pipe (3) are detachably mounted on the mounting frame (1), a first connecting pipe (21) is arranged in communication between the hopper (2) and the feeding pipe (3), a second connecting pipe (31) is arranged in communication at the bottom of the feeding pipe (3), the second connecting pipe (31) extends into the inner cavity of the reaction kettle, and a feeding screw (32) is rotatably mounted in the feeding pipe (3); as well as: An operation panel (11) is fixedly mounted on the mounting frame (1) and is used to input a set weight signal and a start signal; a material guiding module (4), installed in the hopper (2), with a signal input end connected to a signal output end of the operation panel (11), for receiving the start signal and guiding the material in the hopper (2) to flow into the first connecting pipe (21); A first motor (33) is mounted on the feeding pipe (3), a driving end of the first motor (33) is fixedly connected to the feeding screw (32), a signal input end of the first motor (33) is connected to the signal output end of the operation panel (11), and the first motor (33) is used to receive the start signal and drive the feeding screw (32) to rotate at a constant speed; a discharge switch module (5), installed on the first connecting pipe (21), and used for receiving the start signal and connecting to the first connecting pipe (21); A weighing module, mounted on the mounting frame (1), for detecting the weight of the material flowing out of the hopper (2) and outputting a discharge weight signal; A control module is connected to the weighing module and the signal output end of the operation panel (11), and is used to control the material guide module (4) to close when the discharge weight reaches a set weight, control the discharge switch module (5) to turn off the first connecting pipe (21), and control the first motor (33) to stop after a set time.

2. A quantitative feeding mechanism for a reaction kettle according to claim 1, characterized in that: The material guiding module (4) comprises a second motor (41) and a material guiding auger (42) extending into the first connecting pipe (21), the material guiding auger (42) comprises a connecting rod (43), a cover plate (22) is detachably mounted at the opening of the hopper (2), and the connecting rod (43) is rotatably mounted on the cover plate (22); The cylinder body of the second motor (41) is fixedly mounted on the top of the cover plate (22), and the drive shaft of the second motor (41) is fixedly connected to the connecting rod (43).

3. A quantitative feeding mechanism for a reaction kettle according to claim 2, characterized in that: The first connecting pipe (21) comprises a first pipe portion and a second pipe portion, the first pipe portion is connected to the bottom of the hopper (2), and the second pipe portion is connected to the feeding pipe (3); The discharge switch module (5) comprises a connecting piece (51), the two ends of which are respectively connected to the first tube part and the second tube part, a shielding round rod (52) is rotatably installed in the connecting piece (51), the shielding round rod (52) is located between the first tube part and the second tube part, and a feeding hole (53) is provided on the shielding round rod (52); A third motor (54) is fixedly connected to the connecting member (51), and a driving end of the third motor (54) is fixedly connected to the shielding round rod (52).

4. A quantitative feeding mechanism for a reaction kettle according to claim 3, characterized in that: An extension portion is provided at the opening edge of the hopper (2) extending outwardly, and the weighing module comprises: A weighing sensor (6), the bottom of which is fixedly connected to the mounting frame (1) and the top of which is fixedly connected to the extension portion, and is used to detect the weight of the hopper (2) and output a weight signal of the hopper (2); The single chip microcomputer has a signal input end connected to a signal output end of the weighing sensor (6) and is used to receive the weight signal of the hopper (2) and output the discharge weight signal.

5. A quantitative feeding mechanism for a reaction kettle according to claim 4, characterized in that: The control module comprises a comparator chip and a delay switch, wherein the signal input end of the comparator chip is connected to the single chip microcomputer and the signal output end of the operation panel (11), the comparator chip receives the discharge weight signal and the set weight signal, and outputs a closing signal when the discharge weight reaches the set weight; The signal input ends of the second motor (41) and the third motor (54) are signal-connected to the signal output end of the comparator chip; the second motor (41) receives the closing signal and stops driving the material guide auger (42) to rotate; the third motor (54) receives the closing signal and drives the material passing hole (53) to rotate to be misaligned with the first pipe part and the second pipe part; The delay switch is connected in series between the comparator chip and the first motor (33), and the delay switch receives the shutdown signal and controls the first motor (33) to stop driving after a set time.

6. A quantitative feeding mechanism for a reaction kettle according to claim 2, characterized in that: The cover plate (22) is provided with a slide groove (221), a feed port (222) is provided through the bottom of the slide groove (221), and a sealing door (223) is slidably connected in the slide groove (221); The sliding groove (221) is provided with limiting grooves on two opposite sides, and the sealing door (223) is fixedly connected with limiting protrusions on two sides, and the two limiting protrusions are slidably arranged in the two limiting grooves.

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