Automatic metering feeding device and feeding method for chemical production

Abstract

The present invention belongs to the technical field of feeding technology in chemical production, and specifically relates to an automatic metering feeding device and feeding method for chemical production, comprising a feeding bin; a feeding pipe arranged evenly is installed on the top of the feeding bin; a metering mechanism is arranged in the feeding bin; the metering mechanism comprises a slide cylinder; the slide cylinder is located in the feeding bin; the slide cylinder is rotatably installed in the feeding bin through two rotating shafts; two annular plates are fixedly connected inside the slide cylinder; evenly arranged metering sensors are fixedly connected to the surfaces of the two annular plates on opposite sides; a hopper is slidably connected to the slide cylinder on the opposite sides of the two annular plates; a pushing assembly is arranged in the hopper, and the pushing assembly is used to remove materials adhered in the hopper; the present invention can scrape off materials adhered in the hopper by setting a metering mechanism, thereby avoiding more materials adhering to the hopper, resulting in excessive deviation between the weight of the materials measured in the hopper and the actual weight of the materials in the hopper.

Description

Technical Field

[0001] The invention belongs to the technical field of chemical production feeding, in particular to an automatic metering feeding device and a feeding method for chemical production. Background Art

[0002] ‌Chemical production feeding‌ is an important part of the chemical production process, which involves feeding various raw materials and auxiliary materials into the production equipment for the next step of operation and production. The specific form and process of feeding are different in different industries and fields. For example, in chemical production, the raw materials for feeding are mainly various materials and reagents;

[0003] Metering and feeding devices are an indispensable part of modern production processes, especially in the chemical, food, pharmaceutical and building materials industries. This device ensures the continuity of the production process and the stability of product quality by accurately measuring and feeding materials;

[0004] When adding chemical materials to chemical equipment, the materials will enter the metering bin from the feed port. The metering bin will measure the incoming materials through the metering sensor. When the materials reach the set weight, the valve at the bottom of the metering bin will be controlled, and the materials will be discharged into the chemical equipment from the outlet at the bottom of the metering bin. Then the metering sensor will be reset to prepare for the next metering work.

[0005] However, since the position of the metering bin is fixed, when the material is discharged, the material will slide down along the metering bin. If the material accumulates in the metering bin, it will lead to incomplete material discharge and the next metering work will not be able to be carried out. At the same time, some materials will adhere to the inner wall of the metering bin. When the metering sensor is reset and the next metering work is carried out, there will be a deviation between the measured material weight and the actual material weight in the metering bin. Summary of the invention

[0006] In order to make up for the shortcomings of the prior art and solve the above technical problems, the present invention proposes an automatic metering feeding device and feeding method for chemical production. The present invention can scrape off the material adhering to the hopper by setting a metering mechanism, thereby avoiding more material adhering to the hopper, resulting in a large deviation between the weight of the material measured in the hopper and the actual weight of the material in the hopper. The specific structure is as follows:

[0007] An automatic metering feeding device for chemical production, comprising a feeding bin; the entire cross section of the feeding bin is n-shaped, and the top surface of the feeding bin is a cambered surface;

[0008] A discharge trough is provided at the bottom of the feeding bin, and the discharge trough is connected to the feed port of the chemical equipment; evenly arranged feed pipes are installed on the top of the feeding bin, and control valves are installed in the feed pipes, and the control valves are controlled by the control system;

[0009] The feeding bin is provided with a metering mechanism; the metering mechanism includes a slide cylinder; the slide cylinder is located in the feeding bin; the slide cylinder is rotatably installed in the feeding bin through two rotating shafts, and the rotating shaft part extends to the outside of the feeding bin and is driven by a first servo motor;

[0010] The top and bottom end surfaces of the slide cylinder are both arc surfaces, the center of which is concentric with the arc surface at the top of the feeding bin, and the arc surface at the top of the slide cylinder fits with the arc surface at the top of the feeding bin;

[0011] Two annular plates are fixedly connected inside the slide cylinder, and the annular plates are arranged in a mirror image of the center line of the slide cylinder; the surfaces of the two annular plates on opposite sides are fixedly connected to uniformly arranged metering sensors;

[0012] The two annular plates are located on opposite sides of the slide cylinder and are slidably connected with a hopper, and the metering sensor is located between the hopper and the annular plate; the opening end surfaces of the two hoppers are both arc surfaces, and the center of the arc surface is concentric with the arc surface at the top and bottom of the slide cylinder;

[0013] A material pushing assembly is arranged in the hopper, and the material pushing assembly is used to remove the material adhered in the hopper.

[0014] Preferably, the pusher assembly comprises a scraper;

[0015] The two hoppers are both slidably connected with a scraper; the bottom of the scraper located at the top is fixedly connected to a cylinder, and the cylinder extends downward and extends into the hopper below, and is slidably connected to the two hoppers;

[0016] A sliding rod is slidably connected inside the cylinder, and the sliding rod cannot slide out of the cylinder; the other side of the sliding rod is fixedly connected to the scraper below, and the sliding rod is a rectangular rod;

[0017] Both sides of the two hoppers are provided with slide grooves in the slide cylinder; the two sides of the two hoppers facing the slide grooves are fixedly connected with guide rods, and the guide rods slide in the relative slide grooves.

[0018] Preferably, a driving wheel is provided below the two rotating shafts, and the driving wheel is tangent to the scraper below; the driving wheel is in contact with the hopper below;

[0019] A connecting rod is provided below the driving wheel; a second servo motor is installed below the two driving wheels and located on the outer surface of the feeding bin, and the driving shaft of the second servo motor is fixedly connected to the connecting rod.

[0020] Preferably, a rectangular groove is provided in the driving wheel;

[0021] The connecting rod is a rectangular rod and slides in the rectangular groove; the top of the connecting rod is fixedly connected to a spring, and the other side of the spring is fixedly connected to the groove top of the rectangular groove.

[0022] Preferably, the surfaces of the two scrapers on one side away from the metering sensor are curved surfaces.

[0023] Preferably, the discharge chute is rotatably connected to a rotating rod, and the rotating rod extends to the outside of the feeding bin and is driven by a third servo motor;

[0024] The rotating rod is provided with driven plates on both upper and lower sides; the driven plate and the rotating rod are connected through the driven rod; and the end faces of the driven plates on the opposite sides are both designed with chamfered angles.

[0025] Preferably, the driven plate is made of rubber material.

[0026] Preferably, both sides of the slide cylinder are arc-shaped blocks, and the diameter of the arc-shaped blocks is the same as the diameter of the arc surface at the top of the feeding bin, and fits with the arc surface at the top of the feeding bin.

[0027] The present invention also provides an automatic metering feeding method for chemical production, which is applicable to the above-mentioned automatic metering feeding device. The specific feeding method is:

[0028] Step 1: The control valve in the feed pipe is controlled to open by the control system. When the control valve is opened, the material introduced into the feed pipe will fall into the hopper and measured by the metering sensor. When the measured material reaches the set value, the control system controls the control valve to close, and then the material can be put into the chemical equipment;

[0029] Step 2: When feeding, first control the first servo motor to rotate, which will drive the slide to rotate 180 degrees counterclockwise, and at the same time the slide will drive the hopper filled with materials to rotate. When the hopper filled with materials gradually separates from the arc surface of the feeding bin, the hopper filled with materials will be tilted downward, and the materials will gradually fall from the hopper, and the fallen materials will fall into the chemical equipment;

[0030] Step 3: When it is necessary to feed again, the metering sensor under the upper hopper is controlled to be cleared, the control valve is opened, and the material is added again. When the material is added, the first servo motor controls the slide to rotate 180 degrees clockwise, so that feeding can be carried out again.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The automatic metering and feeding device and method for chemical production described in the present invention, by setting a rotating hopper, when the hopper rotates to the bottom, the hopper will generate vibration when it slides downward, so that the material in the hopper can be shaken off to avoid the accumulation of materials in the hopper. At the same time, the downward scraper will scrape the inner wall of the hopper, so as to scrape off the material adhering to the hopper, thereby avoiding more materials from adhering to the hopper, resulting in excessive deviation between the weight of the material measured in the hopper and the actual weight of the material in the hopper. At the same time, by setting two hoppers and two groups of metering sensors for alternate use, the use pressure of a single hopper and a single group of metering sensors can be alleviated.

[0033] 2. The automatic metering feeding device and feeding method for chemical production described in the present invention, when the scraper moves down to the extreme position, it will be tangent to the driving wheel, and the second servo motor will be controlled to rotate, thereby driving the driving wheel to rotate through the connecting rod. During the rotation of the driving wheel, the scraper will be driven to rotate. When the scraper rotates, the material on the scraper can be thrown off, further reducing the amount of residual material on the scraper.

[0034] 3. The automatic metering feeding device and feeding method for chemical production described in the present invention, when the material falls into the upper hopper through the feed barrel, the second servo motor controls the driving wheel to rotate at a uniform speed, thereby driving the slide bar and the cylinder to rotate, and the cylinder drives the upper scraper to rotate. During the rotation of the scraper, the material will fall along the rotating scraper, so that the material can fall evenly on the scraper, avoiding the accumulation of materials in the same position, resulting in the hopper becoming heavy, which will affect the value measured by the metering sensor. Since the surface of the scraper is an arc surface, when the material falls on the scraper, the material will slide to the middle of the scraper, thereby further improving the uniformity of the material on the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Figure 1 It is a stereoscopic diagram of the metering feeding device of the present invention;

[0037] Figure 2 It is the internal structure diagram of the metering feeding device of the present invention;

[0038] Figure 3 It is a structural diagram of the interior of the slide cylinder in the present invention;

[0039] Figure 4 It is a top view of the metering feeding device of the present invention;

[0040] Figure 5 The present invention Figure 4 Sectional view at AA;

[0041] Figure 6The present invention Figure 5 A partial enlarged view of point B in the middle;

[0042] Figure 7 The present invention Figure 5 A partial enlarged view of point C in the middle;

[0043] Figure 8 The present invention Figure 4 Sectional view at DD in the middle;

[0044] Fig. 9 The present invention Figure 8 A partial enlarged view of point E in the middle.

[0045] In the figure: 1. feeding bin; 11. mounting legs; 12. feeding pipe; 13. first servo motor; 2. slide cylinder; 21. annular plate; 22. metering sensor; 23. hopper; 24. guide rod; 25. slide chute; 3. scraper; 31. cylinder; 32. slide rod; 33. arc block; 4. driving wheel; 41. connecting rod; 42. second servo motor; 43. rectangular groove; 5. rotating rod; 51. third servo motor; 52. driven plate. DETAILED DESCRIPTION

[0046] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0047] Embodiment 1: Figures 1 to 9 As shown, on the one hand, the present invention discloses an automatic metering feeding device for chemical production, comprising a feeding bin 1; the entire cross section of the feeding bin 1 is n-shaped, and the top surface of the feeding bin 1 is a curved surface;

[0048] A discharge trough is provided at the bottom of the feeding bin 1; mounting legs 11 are fixedly connected to both sides of the feeding bin 1, and the mounting legs 11 are installed on the chemical equipment, and the discharge trough is connected to the feed port on the chemical equipment; evenly arranged feed pipes 12 are installed on the top of the feeding bin 1, and control valves are installed in the feed pipes 12, and the control valves are controlled by the control system;

[0049] The feeding bin 1 is provided with a metering mechanism; the metering mechanism includes a slide 2; the slide 2 is located in the feeding bin 1; the slide 2 is rotatably installed in the feeding bin 1 through two rotating shafts, and the rotating shaft part extends to the outside of the feeding bin 1 and is driven by a first servo motor 13;

[0050] The top and bottom end surfaces of the slide cylinder 2 are both arc surfaces, the center of which is concentric with the arc surface at the top of the feeding bin 1, and the arc surface at the top of the slide cylinder 2 fits with the arc surface at the top of the feeding bin 1;

[0051] Two annular plates 21 are fixedly connected inside the slide 2, and the annular plates 21 are arranged in a mirror image of the center line of the slide 2; the surfaces of the two annular plates 21 opposite to each other are fixedly connected with evenly arranged metering sensors 22;

[0052] The two annular plates 21 are opposite to each other and are slidably connected with a hopper 23 in the slide 2, and the metering sensor 22 is located between the hopper 23 and the annular plate 21; the opening end surfaces of the two hoppers 23 are both arc surfaces, and the center of the arc surface is concentric with the arc surface at the top and bottom of the slide 2;

[0053] The hopper 23 is provided with a material pushing assembly, and the material pushing assembly is used to remove the material adhering to the hopper 23;

[0054] In this embodiment, the pusher assembly includes a scraper 3;

[0055] The two hoppers 23 are both slidably connected with a scraper 3; the bottom of the scraper 3 located at the top is fixedly connected to a cylinder 31, and the cylinder 31 extends downward and extends into the hopper 23 below, and is slidably connected to the two hoppers 23;

[0056] A slide rod 32 is slidably connected inside the cylinder 31, and the slide rod 32 cannot slide out of the cylinder 31; the other side of the slide rod 32 is fixedly connected to the scraper 3 below, and the slide rod 32 is a rectangular rod;

[0057] On both sides of the two hoppers 23, there are slide grooves 25 in the slide cylinder 2; the two hoppers 23 are fixedly connected to the sides facing the slide grooves 25, and the guide rods 24 slide in the opposite slide grooves 25;

[0058] In the initial state, the hopper 23 and the scraper 3 below slide downward under their own gravity, and the hopper 23 drives the guide rod 24 to slide to the bottom of the slide trough 25; the scraper 3 drives the slide rod 32 to extend to the lower position of the hopper 23 below;

[0059] Specifically, when it is necessary to meter and feed materials into the chemical equipment, firstly, the metering sensor 22 located above is cleared, and then the materials are introduced into the feed pipe 12, and the control valve in the feed pipe 12 is controlled to open by the control system. When the control valve is opened, the materials introduced into the feed pipe 12 will fall into the hopper 23 and be located above the scraper 3. When the materials fall above the scraper 3, the weight of the materials measured by the metering sensor 22 gradually increases. When the weight of the materials gradually approaches the set value, the control system controls the control valve to be gradually closed, thereby reducing the materials falling in the feed pipe 12. When the metered materials reach the set value, the control system controls the control valve to be closed, and then the materials can be fed into the chemical equipment.

[0060] More specifically, when feeding, first control the first servo motor 13 to rotate, thereby driving the slide 2 to rotate 180 degrees counterclockwise. During the rotation of the slide 2, the slide 2 will rotate along the arc surface at the top of the feeding bin 1. At the same time, the slide 2 will drive the hopper 23 filled with materials to rotate along the arc surface at the top of the feeding bin 1, and the hopper 23 originally located below will also gradually rotate with the slide 2. At the same time, the material will be confined between the hopper 23 and the side wall of the feeding bin 1, and follow the hopper 23 along the feeding bin 1. The arc surface of the top of the hopper 1 rotates, and during the rotation of the hopper 23, the arc surface of the feeding hopper 1 can be scraped, thereby preventing some materials from adhering to the arc surface of the feeding hopper 1. When the hopper 23 filled with materials gradually separates from the arc surface of the feeding hopper 1, the hopper 23 filled with materials is in a downward tilted state, and the materials gradually fall from the hopper 23 until the materials completely fall from the hopper 23. The fallen materials will fall into the chemical equipment. When the hopper 23 rotates 80 degrees, the materials originally located at the top will be The hopper 23 rotates downward, and the hopper 23 originally located at the bottom rotates upward. The hopper 23 rotated downward will slide downward under its own gravity, and at the same time will drive the guide rod 24 to slide downward in the chute 25. When the guide rod 24 slides to the bottom of the chute 25 and collides with the bottom of the chute 25, the hopper 23 will vibrate. During the vibration of the hopper 23, the materials accumulated in the hopper 23 can be shaken off, and the materials adhering to the side wall of the hopper 23 can be shaken off. At the same time, the materials below The scraper 3 slides downward under its own gravity, and the scraper 3 sliding downward will pull the slide bar 32 to slide downward in the cylinder 31. In the process of the scraper 3 sliding downward, it will move along the hopper 23, so as to scrape the inner wall of the hopper 23, so as to prevent the material from adhering to the inner wall of the hopper 23. In the process of the scraper 3 moving downward, the slide bar 32 will be pulled to gradually move downward in the cylinder 31. When the scraper 3 moves downward to the extreme position, the scraper 3 will vibrate, so as to shake off the material adhering to the scraper 3.

[0061] Furthermore, when it is necessary to feed again, the metering sensor 22 located below the upper hopper 23 is controlled to be cleared, the control valve is opened, and the material is added again. When the material is added, the first servo motor 13 controls the slide 2 to rotate 180 degrees clockwise. During the rotation of the slide 2, the two hoppers 23 will be driven to rotate. At this time, the hopper 23 located above will rotate according to the above steps. During the rotation of the hopper 23 and the scraper 3 below, the scraper 3 and the hopper 23 will gradually contact the feeding bin 1. As the hopper 23 and the scraper 3 below gradually rotate, the scraper 3 and the hopper 23 will gradually slide into the slide 2 under the obstruction of the side wall of the feeding bin 1. When the hopper 23 and the scraper 3 below rotate to the upper position, the hopper 23 and the scraper 3 will slide downward under the action of their own gravity and slide to the initial position. The above operation will be repeated each time feeding is performed.

[0062] Furthermore, by providing a rotating hopper 23, when the hopper 23 rotates to the downward direction, the hopper 23 will generate vibration when sliding downward, thereby shaking out the material in the hopper 23 to prevent the material from accumulating in the hopper 23. At the same time, the downwardly moving scraper 3 will scrape the inner wall of the hopper 23, thereby scraping off the material adhering to the hopper 23, thereby preventing more material from adhering to the hopper 23, resulting in a large deviation between the weight of the material measured in the hopper 23 and the actual weight of the material in the hopper 23. At the same time, by providing two hoppers 23 and two groups of metering sensors 22 for alternating use, the use pressure of a single hopper 23 and a single group of metering sensors 22 can be alleviated.

[0063] Embodiment 2: A driving wheel 4 is provided below the two rotating shafts, and the driving wheel 4 is tangent to the scraper 3 below; the driving wheel 4 contacts the hopper 23 below, and a connecting rod 41 is provided below the driving wheel 4; a second servo motor 42 is installed on the outer surface of the feeding bin 1 below the two driving wheels 4, and the driving shaft of the second servo motor 42 is fixedly connected to the connecting rod 41, and a rectangular groove 43 is provided in the driving wheel 4;

[0064] The connecting rod 41 is a rectangular rod and slides in the rectangular groove 43; the top of the connecting rod 41 is fixedly connected to a spring, and the other side of the spring is fixedly connected to the top of the rectangular groove 43, and the surface of one side of the two scrapers 3 away from the metering sensor 22 is an arc surface;

[0065] Specifically, when the hopper 23 slides downward under its own gravity, the bottom of the hopper 23 will contact the top of the driving wheel 4. When the hopper 23 contacts the driving wheel 4, the hopper 23 will vibrate, so that the materials accumulated in the hopper 23 can be shaken off. At the same time, when the hopper 23 contacts the driving wheel 4, it will press the driving wheel 4 downward, and the driving wheel 4 will slide downward along the connecting rod 41 and press the spring, so that the driving wheel 4 can slide up and down. The sliding driving wheel 4 will push the hopper 23 to move up and down, so as to better shake off the materials.

[0066] More specifically, when the scraper 3 moves down to the extreme position, it will be tangential to the driving wheel 4, and the second servo motor 42 will be controlled to rotate, thereby driving the driving wheel 4 to rotate through the connecting rod 41. During the rotation of the driving wheel 4, the scraper 3 will be driven to rotate. When the scraper 3 rotates, the material on the scraper 3 can be thrown off, further reducing the amount of residual material on the scraper 3.

[0067] Furthermore, when the material falls into the upper hopper 23 through the feed barrel, the second servo motor 42 controls the driving wheel 4 to rotate at a uniform speed, thereby driving the slide bar 32 and the cylinder 31 to rotate, and the cylinder 31 drives the upper scraper 3 to rotate. During the rotation of the scraper 3, the material will fall along the rotating scraper 3, so that the material can fall evenly on the scraper 3, avoiding the accumulation of materials in the same position, causing the hopper 23 to be overweight, thereby affecting the value measured by the metering sensor 22. Since the surface of the scraper 3 is an arc surface, when the material falls on the scraper 3, the material will slide to the middle of the scraper 3, thereby further improving the uniformity of the material on the scraper 3.

[0068] Embodiment 3: The discharging chute is rotatably connected with a rotating rod 5, and the rotating rod 5 extends to the outside of the feeding bin 1 and is driven by a third servo motor 51. A driven plate 52 is provided on both the upper and lower sides of the rotating rod 5; the driven plate 52 is connected to the rotating rod 5 through a driven rod; the end surface of the driven plate 52 on the opposite side is chamfered;

[0069] In this embodiment, the driven plate 52 is made of rubber material;

[0070] In this embodiment, both sides of the slide 2 are provided with arc blocks 33, and the diameter of the arc blocks 33 is the same as the diameter of the arc surface at the top of the feeding bin 1, and fits with the arc surface at the top of the feeding bin 1;

[0071] Specifically, when the scraper 3 is rotating, the third servo motor 51 is controlled to drive the rotating rod 5 and the driven plate 52 to rotate. During the rotation of the driven plate 52, the bottom of the scraper 3 can be scraped to scrape off the adhered materials. At the same time, since the driven plate 52 is designed with a chamfered angle, when the chamfered side of the driven plate 52 contacts the scraper 3, the contact area with the scraper 3 can be reduced to increase the pressure, so that the materials can be scraped off better. Since the driven plate 52 is made of rubber material, it can be avoided that the driven plate 52 will cause damage to the scraper 3 when scraping the scraper 3.

[0072] More specifically, since the arc blocks 33 are fixedly connected on both sides of the slide 2, and the arc blocks 33 are in contact with the arc surface at the top of the feeding bin 1, when the slide 2 rotates, the arc blocks 33 will be driven to rotate, and the arc blocks 33 will rotate along the arc surface at the top of the feeding bin 1. At the same time, the arc blocks 33 will be filled in the feeding bin 1, thereby making the slide 2 rotate more stably.

[0073] On the other hand, the present invention also provides an automatic metering feeding method for chemical production, which is applicable to the above-mentioned automatic metering feeding device, and the specific feeding method is:

[0074] Step 1: The control valve in the feed pipe 12 is controlled to open by the control system. When the control valve is opened, the material introduced into the feed pipe 12 will fall into the hopper 23 and the material is measured by the metering sensor 22. When the measured material reaches the set value, the control system controls the control valve to close, and then the material can be put into the chemical equipment;

[0075] Step 2: When feeding, first control the first servo motor 13 to rotate, thereby driving the slide 2 to rotate 180 degrees counterclockwise, and at the same time the slide 2 drives the hopper 23 filled with materials to rotate. When the hopper 23 filled with materials gradually separates from the arc surface of the feeding bin 1, the hopper 23 filled with materials is tilted downward, and the materials gradually fall from the hopper 23, and the fallen materials fall into the chemical equipment;

[0076] Step three: When it is necessary to feed again, the metering sensor 22 below the upper hopper 23 is controlled to be cleared, the control valve is opened, and the material is added again. When the material is added, the first servo motor 13 controls the slide 2 to rotate one hundred and eighty degrees clockwise, so that feeding can be carried out again.

[0077] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automatic metering feeding device for chemical production, characterized in that: It comprises a feeding bin (1); the entire cross section of the feeding bin (1) is n-shaped, and the top surface of the feeding bin (1) is a curved surface; The bottom of the feeding bin (1) is provided with a discharge trough, which is connected to the feed port of the chemical equipment; the top of the feeding bin (1) is provided with evenly arranged feed pipes (12), and the feed pipes (12) are each provided with a control valve, and the control valve is controlled by a control system; A metering mechanism is provided in the feeding bin (1); the metering mechanism comprises a slide cylinder (2); the slide cylinder (2) is located in the feeding bin (1); the slide cylinder (2) is rotatably mounted in the feeding bin (1) via two rotating shafts, and the rotating shaft portion extends to the outside of the feeding bin (1) and is driven by a first servo motor (13); The top and bottom end surfaces of the slide cylinder (2) are both arc surfaces, the center of which is concentric with the arc surface at the top of the feeding bin (1), and the arc surface at the top of the slide cylinder (2) fits the arc surface at the top of the feeding bin (1); Two annular plates (21) are fixedly connected inside the slide cylinder (2), and the annular plates (21) are arranged in a mirror image of the center line of the slide cylinder (2); and evenly arranged metering sensors (22) are fixedly connected to the surfaces of the two annular plates (21) on opposite sides. The two annular plates (21) are slidably connected with a hopper (23) on the opposite side of the slide cylinder (2), and the metering sensor (22) is located between the hopper (23) and the annular plate (21); the opening end surfaces of the two hoppers (23) are both arc surfaces, and the center of the arc surface is concentric with the arc surfaces at the top and bottom of the slide cylinder (2); A material pushing assembly is provided in the hopper (23), and the material pushing assembly is used to remove materials adhering to the hopper (23); The pusher assembly comprises a scraper (3); The two hoppers (23) are both slidably connected with a scraper (3); the bottom of the scraper (3) located at the top is fixedly connected to a cylinder (31), and the cylinder (31) extends downward and extends into the hopper (23) below, and is slidably connected to the two hoppers (23); A slide rod (32) is slidably connected inside the cylinder (31), and the slide rod (32) cannot slide out of the cylinder (31); the other side of the slide rod (32) is fixedly connected to the scraper (3) below, and the slide rod (32) is a rectangular rod; Both sides of the two hoppers (23) are provided with slide grooves (25) in the slide cylinder (2); the two sides of the two hoppers (23) facing the slide grooves (25) are fixedly connected to guide rods (24), and the guide rods (24) slide in the opposite slide grooves (25); A driving wheel (4) is provided below the two rotating shafts, and a connecting rod (41) is provided below the driving wheel (4); A rectangular groove (43) is provided in the driving wheel (4); The connecting rod (41) is a rectangular rod and slides in the rectangular groove (43); the top of the connecting rod (41) is fixedly connected to a spring, and the other side of the spring is fixedly connected to the top of the rectangular groove (43).

2. The automatic metering feeding device for chemical production according to claim 1, characterized in that: The driving wheel (4) is tangent to the scraper (3) below; the driving wheel (4) is in contact with the hopper (23) below; A second servo motor (42) is installed below the two driving wheels (4) on the outer surface of the feeding bin (1), and the driving shaft of the second servo motor (42) is fixedly connected to the connecting rod (41).

3. The automatic metering feeding device for chemical production according to claim 2 is characterized in that: The surfaces of the two scrapers (3) on one side away from the metering sensor (22) are arc surfaces.

4. The automatic metering feeding device for chemical production according to claim 3 is characterized in that: The discharge chute is rotatably connected to a rotating rod (5), and the rotating rod (5) extends to the outside of the feeding bin (1) and is driven by a third servo motor (51); The rotating rod (5) is provided with a driven plate (52) on both upper and lower sides; the driven plate (52) and the rotating rod (5) are connected via the driven rod; and the end surface of the driven plate (52) on the opposite side is designed with a chamfered angle.

5. The automatic metering feeding device for chemical production according to claim 4 is characterized in that: The driven plate (52) is made of rubber material.

6. The automatic metering feeding device for chemical production according to claim 5, characterized in that: Both sides of the slide cylinder (2) are provided with arc blocks (33), and the diameter of the arc blocks (33) is the same as the diameter of the arc surface at the top of the feeding bin (1), and fits the arc surface at the top of the feeding bin (1).

7. A method for automatic metering and feeding in chemical production, characterized in that: The method is applicable to the automatic metering feeding device according to any one of claims 1 to 6, and the specific feeding method is: Step 1: The control valve in the feed pipe (12) is controlled to open by the control system. When the control valve is opened, the material introduced into the feed pipe (12) falls into the hopper (23). The material is measured by the metering sensor (22). When the measured material reaches the set value, the control system controls the control valve to close, and then the material can be put into the chemical equipment; Step 2: When feeding, first control the first servo motor (13) to rotate, thereby driving the slide (2) to rotate 180 degrees counterclockwise, and at the same time the slide (2) drives the hopper (23) filled with materials to rotate, when the hopper (23) filled with materials gradually separates from the arc surface of the feeding bin (1), the hopper (23) filled with materials is tilted downward, and at the same time the materials gradually fall from the hopper (23), and the fallen materials fall into the chemical equipment; Step 3: When it is necessary to feed again, the metering sensor (22) below the upper hopper (23) is controlled to be reset, and the control valve is opened, and the material is added again. When the material is added, the first servo motor (13) controls the slide (2) to rotate 180 degrees clockwise, so that feeding can be carried out again.

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