Inclined opposed multi-screw extrusion feeding weightlessness scale and weighing method

Abstract

The invention discloses an inclined opposed multi-screw extrusion feeding weightlessness scale and a weighing method. The inclined opposed multi-screw extrusion feeding weightlessness scale comprises a hopper, a bearing base and two feeding devices. The bearing base comprises a discharging table, a supporting arm, a pressure sensor and an operation panel, the supporting arm, the pressure sensor and the operation panel are located on the discharging table, a discharging cavity and two inclined faces are arranged on the discharging table, and a pressing rod is arranged on the outer wall of the hopper. The feeding device comprises a motor, a synchronous belt transmission module, a material box and a plurality of screws located in the material box, and a discharging hole is formed in the material box. The weightlessness scale is provided with two feeding devices, and each feeding device is provided with a plurality of screws for common feeding, so that the feeding efficiency between units can be improved, and the weightlessness scale is suitable for occasions with large feeding amount and needing batch production; each feeding device is internally provided with a plurality of screw rods responsible for pushing materials, even if a certain discharging hole is blocked, other screw rods can still keep feeding, the frequency of shutdown maintenance is reduced, and the feeding process is coherent.

Description

Technical Field

[0001] The invention relates to the field of weighing equipment, in particular to an inclined opposed multi-screw extrusion feeding loss-in-weight scale and a weighing method. Background Art

[0002] Loss-in-weight scale is an automatic weighing device that achieves high-precision continuous quantitative feeding through static weighing. It can feed dry bulk materials such as powders, granules, and flakes reliably, accurately, and stably, reducing material waste and improving the consistency of the mixture.

[0003] The feeding process of a loss-in-weight scale mainly pushes the material from the hopper to the discharge position through the rotation of the screw, and the feeding speed is controlled by adjusting the screw speed. That is, the feeding speed of the loss-in-weight scale is positively correlated with the screw speed. However, the existing loss-in-weight scale uses a single screw for feeding, and the feeding speed is limited by the screw speed, which is not suitable for batch production scenarios. In addition, when processing wet materials, the discharge part often becomes blocked, requiring frequent shutdowns for maintenance, and the feeding process is discontinuous. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an inclined opposed multi-screw extruder feeding loss-in-weight scale and a weighing method thereof, so as to achieve stable and continuous feeding, improve feeding efficiency, and enable the loss-in-weight scale to be applied in mass production occasions.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] An inclined opposed multi-screw extruder feeding loss-in-weight scale, comprising: a hopper, a load-bearing base and two feeding devices;

[0007] The load-bearing base includes a discharge platform and a support arm, a pressure sensor, and an operation panel located on the discharge platform. The discharge platform is provided with a material discharge cavity and two inclined surfaces. The feeding device is provided on the inclined surfaces, and both feeding devices are inclined toward the location of the material discharge cavity. The hopper is provided on the discharge platform, and the support arm is supported against the outer wall of the hopper. A pressure rod is provided on the outer wall of the hopper, and the pressure rod is used to press the pressure sensor.

[0008] The feeding device includes a motor, a synchronous belt transmission module, a material box and a plurality of screws located in the material box. The material box is provided with a discharge hole matching the screw, the discharge hole faces the feed cavity, the hopper is connected to the material box, the synchronous belt transmission module is used to connect the motor and the screw, and the screw is used to push the material in the material box into the discharge hole.

[0009] In one of the embodiments, a torque meter is provided at the connection position between the motor and the synchronous belt drive module; a feed cavity is provided in the material box, and each of the discharge holes is communicated with the feed cavity; a docking interface matching the feed cavity is provided at the bottom of the hopper, and the screw is connected to the synchronous belt drive module, and the screw extends from the feed cavity to the discharge hole; a plurality of the screws are spaced apart along the long side direction of the feed cavity, and threaded push paddles are provided on the screws at positions located in the feed cavity and the discharge hole, and the spiral directions of the push paddles on adjacent screws are opposite.

[0010] In one embodiment, two docking ports are provided, each of which is connected to the feed cavity on the material box, and the inner cavity of the hopper is provided with a conical diverter block, which is located between the two docking ports, and the width of the conical diverter block decreases from the end close to the docking port to the end away from the docking port, and the conical diverter block is used to guide the material to move toward the docking port.

[0011] In one of the embodiments, two plug plates are further included. The plug plates are slidably disposed on the hopper. The plug plates are provided with blocking portions, and the blocking portions extend into the hopper to block the docking port.

[0012] In one of the embodiments, the width of the hopper increases gradually from an end close to the feeding device to an end away from the feeding device; two support arms are provided, and the support arms include a lifting beam, a contact block and two columns, and clamps are provided at both ends of the lifting beam, and the clamps are passed through the columns, and the contact block is rotatably provided on the lifting beam, and the contact block is used to abut against the outer wall of the hopper.

[0013] In one of the embodiments, the load-bearing base is further provided with a mounting platform, a guide groove is provided on the top of the mounting platform, the pressure sensor is located in the guide groove, and the outer wall of the pressure rod is in contact with the inner wall of the guide groove.

[0014] In one of the embodiments, a telescopic foot is provided at the bottom of the load-bearing base.

[0015] In one embodiment, the number of the screws is 10.

[0016] A weighing method, based on the above-mentioned inclined opposed multi-screw extruder feeding loss-in-weight scale, is characterized by comprising the following steps:

[0017] Step 1: Place the hopper on the load-bearing base, make the pressure rod contact the pressure sensor, and adjust the pressure sensor to zero;

[0018] Step 2: Mix and stir the materials evenly and put them into the hopper, so that the materials enter the feeding cavity of the material box through the docking port;

[0019] Step 3: The pressure sensor measures the weight of the material in the hopper at this time, and the feeding amount is set through the operation panel;

[0020] Step 4: The motor drives all the screws to rotate synchronously, and the push paddle pushes the material into the feeding chamber;

[0021] Step 5: When the torque meter is triggered, change the rotation direction of the motor to keep the screw rotating until the feeding task is completed.

[0022] The above-mentioned inclined opposed multi-screw extruder feeding loss-in-weight scale and weighing method have the following beneficial effects:

[0023] 1. It is equipped with two feeding devices, and each feeding device is equipped with multiple screws for joint feeding, which can improve the feeding efficiency between units, making the loss-in-weight scale suitable for occasions with large feeding volume and batch production;

[0024] 2. Each feeding device is equipped with multiple screws responsible for pushing materials. Even if one of the discharge holes is blocked, the other screws can still keep feeding, reducing the number of shutdowns for maintenance and making the feeding process continuous. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the structure of an inclined opposed multi-screw extruder feeding loss-in-weight scale;

[0027] Figure 2 This is the internal structure diagram of the inclined opposed multi-screw extruder feeding loss-in-weight scale;

[0028] Figure 3 It is a structural schematic diagram of the load-bearing base;

[0029] Figure 4 It is a schematic diagram of the structure of the feeding device;

[0030] Figure 5 Schematic diagram of the coordination between the material box and the screw;

[0031] Figure 6 Schematic diagram of the distribution of the feed cavity and the discharge hole.

[0032] Reference numerals: 10, inclined opposed multi-screw extruder feeding loss-in-weight scale; 100, hopper; 110, pressure rod; 120, docking port; 130, conical diverter block; 200, load-bearing base; 210, discharge platform; 211, feeding cavity; 212, inclined surface; 220, support arm; 221, lifting beam; 222, contact block; 223, column; 224, clamp; 230, pressure sensor; 240 , operation panel; 250, mounting table; 251, guide groove; 260, telescopic foot; 300, feeding device; 310, motor; 320, synchronous belt drive module; 330, material box; 331, discharge hole; 332, feed chamber; 340, screw; 341, push paddle; 341a, right-handed thread; 341b, left-handed thread; 350, torque meter; 400, plug plate; 410, blocking part. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0036] See also Figure 1 and Figure 2 , an inclined opposed multi-screw extruder feeding loss-in-weight scale 10, comprising: a hopper 100, a load-bearing base 200 and two feeding devices 300. The material is temporarily stored in the hopper 100, and the feeding device 300 and the load-bearing base 200 cooperate to feed the material in the hopper 100 according to the amount.

[0037] See also Figure 1 and Figure 2The load-bearing base 200 includes a discharge platform 210 and a support arm 220, a pressure sensor 230, and an operation panel 240 located on the discharge platform 210. The discharge platform 210 is provided with a material discharge cavity 211 and two inclined surfaces 212. The feeding device 300 is arranged on the inclined surface 212, and the two feeding devices 300 are inclined toward the position of the material discharge cavity 211. The hopper 100 is arranged on the discharge platform 210, and the support arm 220 is against the outer wall of the hopper 100. A pressure rod 110 is provided on the outer wall of the hopper 100, and the pressure rod 110 is used to press the pressure sensor 230;

[0038] See also Figure 4 and Figure 5 The feeding device 300 includes a motor 310, a synchronous belt transmission module 320, a material box 330 and a plurality of screws 340 located in the material box 330. The material box 330 is provided with a discharge hole 331 matching with the screws 340, the discharge hole 331 faces the lower material cavity 211, the hopper 100 is connected with the material box 330, the synchronous belt transmission module 320 is used to connect the motor 310 and the screws 340, and the screws 340 are used to push the material in the material box 330 into the discharge hole 331. Preferably, the number of the screws 340 is 10.

[0039] The working principle of the inclined opposed multi-screw extruder feeding loss-in-weight scale 10 is as follows:

[0040] After the hopper 100 is docked with the support arm 220, the pressure rod 110 on the hopper 100 presses the pressure sensor 230, and the pressure value is adjusted to zero through the operation panel 240; the material is loaded into the hopper 100, and the feeding amount is set on the operation panel 240;

[0041] After the above preparations are completed, the inclined opposed multi-screw extruder feeding loss-in-weight scale 10 is turned on, and the motor 310 drives the screw 340 to rotate synchronously through the synchronous belt transmission module 320. When the screw 340 rotates, it can push the material to be discharged from the discharge hole 331.

[0042] The material discharge amount is positively correlated with the rotation speed of the screw 340. The faster the screw 340 rotates, the greater the material discharge amount; conversely, the slower the screw 340 rotates, the smaller the material discharge amount. The user can set the feeding amount on the operation panel 240. The pressure sensor 230 can measure the reduction in material weight and feed it back to the circuit board in the operation panel 240. If the reduction in material weight per unit time is inconsistent with the feeding amount set by the user, the rotation speed of the motor 310 can be increased or decreased, and the feeding speed can be adjusted by changing the rotation speed of the screw 340. That is, the rotation speed output by the motor 310 is increased or decreased according to the change in the weight of the material in the hopper 100 fed back by the pressure sensor 230, so as to achieve the purpose of quantitative discharge.

[0043] The above-mentioned inclined opposed multi-screw extruder feeding loss-in-weight scale 10 has the following beneficial effects:

[0044] 1. Two feeding devices 300 are configured, and each feeding device 300 is provided with a plurality of screws 340 for feeding together, which can improve the feeding efficiency between units, making the loss-in-weight scale suitable for occasions with large feeding volume and batch production;

[0045] 2. Each feeding device 300 is equipped with a plurality of screws 340 responsible for pushing materials. Even if one of the discharge holes 331 is blocked, the other screws 340 can still keep feeding materials, thus reducing the number of shutdowns for maintenance and making the feeding process continuous.

[0046] In the above embodiment, the feeding amount per unit time is increased by setting a plurality of screws 340, and since a plurality of screws 340 are provided, it is equivalent to providing a plurality of discharge positions. When a discharge hole 331 is blocked, other discharge holes 331 can be used for feeding, and it is not necessary to stop the machine for maintenance during feeding, thereby ensuring the continuity and stability of feeding. However, the above feeding method fails to eliminate the influence of material blockage on the loss-in-weight scale itself. After the material in the hopper 100 is emptied, the maintenance personnel are still required to clear the discharge hole 331, which only postpones the problem of material blockage until the feeding task is completed. It only postpones the time of equipment maintenance, and the problem of material blockage is not solved. When extreme situations occur, such as when all screws 340 are blocked, the resistance caused by material blockage is too large to cause the motor 310 to overload, the machine has to be stopped for maintenance.

[0047] In order to solve the above problems, the following improvements are made to the inclined opposed multi-screw extruder feeding loss-in-weight scale 10:

[0048] See also Figure 4 and Figure 5 A torque meter 350 is provided at the connection position between the motor 310 and the synchronous belt transmission module 320; the user can set the parameters of the torque meter 350. When the torque at the output end of the motor 310 reaches the set value, the torque meter 350 is triggered and sends a signal to the operation panel 240. When the torque meter 350 is triggered, it proves that the discharge hole 331 is blocked and causes overload at the motor 310.

[0049] See also Figure 5 and Figure 6 The material box 330 is provided with a feed cavity 332, and each discharge hole 331 is connected to the feed cavity 332. A docking port 120 matching the feed cavity 332 is provided at the bottom of the hopper 100. The screw 340 is connected to the synchronous belt drive module 320, and the screw 340 extends from the feed cavity 332 to the discharge hole 331. The material in the hopper 100 falls into the feed cavity 332 under the action of gravity, and the multiple discharge holes 331 are all connected to the feed cavity 332. The screw 340 rotates to push the feed cavity 332 into the discharge hole 331, so that the material is discharged from the discharge hole 331.

[0050] See also Figure 4 and Figure 5 , multiple screws 340 are spaced apart along the long side direction of the feed chamber 332, and threaded push paddles 341 are provided on the screws 340 at positions located in the feed chamber 332 and the discharge hole 331, and the spiral directions of the push paddles 341 on adjacent screws 340 are opposite. For example, the push paddle 341 on one of the screws 340 is a right-handed thread 341a, and the push paddle 341 on another screw 340 adjacent to the screw 340 is a left-handed thread 341b. The push paddle 341 is a structure on the screw 340 for pushing materials.

[0051] And provide the following weighing method, based on the above-mentioned inclined opposed multi-screw extruder feeding loss-in-weight scale 10, characterized in that it includes the following steps:

[0052] Step 1: Place the hopper 100 on the load-bearing base 200, make the pressure rod 110 contact the pressure sensor 230, and adjust the pressure sensor 230 to zero;

[0053] Step 2: Mix and stir the materials evenly and put them into the hopper 100, so that the materials enter the feeding cavity 332 of the material box 330 through the docking port 120;

[0054] The value measured by the pressure sensor 230 after the material enters the hopper 100 is the total weight of the material. During the feeding process of the loss-in-weight scale, the weight of the material will continue to decrease. The pressure sensor 230 is used to detect the reduction in the amount of material per unit time.

[0055] Step 3: The pressure sensor 230 measures the weight of the material in the hopper 100 at this time, and the feeding amount is set through the operation panel 240;

[0056] The operation panel 240 adjusts the rotation speed output by the motor 310 according to the signal fed back by the pressure sensor 230 to control the pushing speed of the screw 340 so as to meet the feeding amount set by the user.

[0057] Step 4: The motor 310 drives all the screws 340 to rotate synchronously, and the pushing paddle 341 pushes the material into the material discharge chamber 211;

[0058] Since the pushing paddles 341 on adjacent screws 340 have opposite rotation directions, half of the screws 340 perform the feeding action, and the other half of the screws 340 clear the discharge holes 331 .

[0059] Step 5: When the torque meter 350 is triggered, the rotation direction of the motor 310 is changed so that the screw 340 keeps rotating until the feeding task is completed.

[0060] When the torque meter 350 is triggered, it means that the discharge hole 331 corresponding to the screw 340 performing the feeding action is blocked by the material, causing the motor 310 to be overloaded. Changing the rotation direction of the motor 310 can change the rotation direction of the screw 340, and the screw 340 that originally performed the feeding action begins to clear the discharge hole 331, and the previously cleared discharge hole 331 begins to perform the feeding action.

[0061] It should be noted that, since the push paddles 341 are threaded, and the spiral directions of the push paddles 341 on adjacent screws 340 are opposite, and the multiple screws 340 in the same material box 330 rotate synchronously, when one of the screws 340 rotates to push the material in the feed cavity 332 into the discharge hole 331 for feeding, the push paddles 341 on the screws 340 adjacent to the screw 340 will push the material in the direction opposite to the former, that is, push the material from the discharge hole 331 to the feed cavity 332. That is, the directions in which the two adjacent screws 340 push the material are opposite.

[0062] When the motor 310 is started, only half of the screws 340 in the same material box 330 perform the feeding action, and the other half of the screws 340 do not participate in the feeding. When the discharge hole 331 is blocked during the pushing process of the screw 340 participating in the feeding action, and the motor 310 is overloaded, the motor 310 can be operated to reverse, so that the rotation direction of the screw 340 changes, and the screw 310 that originally did not participate in the feeding pushes the material to fall from the corresponding discharge hole 331; and the screw 310 that originally had the feeding task of going straight will push the material blocked in the discharge hole 331 into the feed cavity 332, thereby eliminating the blockage problem.

[0063] It should be emphasized that since the screw 340 in the same material box 330 is provided with a push paddle 341 with opposite rotation direction, when the feeding device 300 feeds, half of the screw 340 is in a straight feeding action, and the other half of the screw 340 is actually clearing the discharge hole 331. When there is a material blockage problem in the screw 340 performing the feeding action, the motor 310 can be driven in reverse to let the other half of the screw 340 take over the feeding action, so that the feeding process is continuous, and due to the reversal, the screw 340 that originally performed the feeding action is reversed to push the blocked discharge hole 331 back into the feed chamber 332, and there is no need to stop the machine specifically to deal with the problem of material blockage.

[0064] See also Figure 2 and Figure 4In one embodiment, two docking ports 120 are provided, each docking port 120 is correspondingly connected to a feed cavity 332 on a material box 330, and a conical diverter block 130 is provided in the inner cavity of the hopper 100. The conical diverter block 130 is located between the two docking ports 120, and the width of the conical diverter block 130 decreases from the end close to the docking port 120 to the end away from the docking port 120. The conical diverter block 130 is used to guide the material to move toward the docking port 120. The conical diverter block 130 guides the falling direction of the material in the hopper 100, so that it falls smoothly into the feed cavity 332 of the two feeding devices 300.

[0065] See also Figure 2 The inclined opposed multi-screw extruder feeding loss-in-weight scale 10 also includes two plug plates 400, which are slidably arranged on the hopper 100. The plug plates 400 are provided with a blocking portion 410, which extends into the hopper 100 to block the docking port 120, so that the timing of material falling can be controlled.

[0066] See also Figure 2 and Figure 3 Furthermore, the width of the hopper 100 increases from the end close to the feeding device 300 to the end far from the feeding device 300; there are two support arms 220, and the support arms 220 include a lifting beam 221, a contact block 222 and two columns 223. Hoops 224 are provided at both ends of the lifting beam 221, and the columns 223 are penetrated by the hoop 224. The contact block 222 is rotatably provided on the lifting beam 221, and the contact block 222 is used to abut against the outer wall of the hopper 100. The contact blocks 222 on the two support arms 220 cooperate to provide support for the hopper 100. Loosening the hoop 224 can adjust the height of the lifting beam 221, and then adjust the fixed height of the hopper 100, so that the support arms 220 can be raised and lowered, and can adapt to hoppers 100 of different volumes.

[0067] See also Figure 3 In one embodiment, the load-bearing base 200 is further provided with a mounting platform 250, a guide groove 251 is provided on the top of the mounting platform 250, the pressure sensor 230 is located in the guide groove 251, and the outer wall of the pressure rod 110 is in contact with the inner wall of the guide groove 251. The guide groove 251 provides a limit for the pressure rod 110, guides the pressure rod 110 to contact with the pressure sensor 230, and improves the detection accuracy of the pressure sensor 230.

[0068] See also Figure 1 and Figure 2 In one embodiment, a telescopic foot 260 is provided at the bottom of the load-bearing base 200, and the telescopic foot 260 can push the load-bearing base 200 up or down to adjust the falling height of the material.

[0069] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An inclined opposed multi-screw extruder feeding loss-in-weight scale, characterized in that: include: Hopper, load-bearing base and two feeding devices; The load-bearing base includes a discharge platform and a support arm, a pressure sensor, and an operation panel located on the discharge platform. The discharge platform is provided with a material discharge cavity and two inclined surfaces. The feeding device is provided on the inclined surfaces, and both feeding devices are inclined toward the location of the material discharge cavity. The hopper is provided on the discharge platform, and the support arm is supported against the outer wall of the hopper. A pressure rod is provided on the outer wall of the hopper, and the pressure rod is used to press the pressure sensor. The feeding device includes a motor, a synchronous belt transmission module, a material box and a plurality of screws located in the material box. The material box is provided with a discharge hole matching the screw, the discharge hole faces the feed cavity, the hopper is connected to the material box, the synchronous belt transmission module is used to connect the motor and the screw, and the screw is used to push the material in the material box into the discharge hole.

2. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 1, characterized in that: A torque meter is provided at the connection position between the motor and the synchronous belt transmission module; The material box is provided with a feed cavity, each of the discharge holes is communicated with the feed cavity, a docking port matching the feed cavity is provided at the bottom of the hopper, the screw is connected to the synchronous belt drive module, and the screw extends from the feed cavity to the discharge hole; The plurality of screws are spaced apart along the long side direction of the feed cavity, and threaded push paddles are provided at the positions of the screws located in the feed cavity and the discharge hole, and the spiral directions of the push paddles on adjacent screws are opposite.

3. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 2, characterized in that: There are two docking ports, each of which is connected to the feed cavity on the material box. The inner cavity of the hopper is provided with a conical diverter block, and the conical diverter block is located between the two docking ports. The width of the conical diverter block decreases from the end close to the docking port to the end away from the docking port. The conical diverter block is used to guide the material to move toward the docking port.

4. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 3, characterized in that: It also includes two plug plates, which are slidably arranged on the hopper, and the plug plates are provided with blocking parts, which extend into the hopper to block the docking port.

5. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 1, characterized in that: The width of the hopper increases gradually from an end close to the feeding device to an end away from the feeding device; The support arms are provided with two, and the support arms include a lifting beam, a contact block and two columns. Hoops are provided at both ends of the lifting beam, and the hoops are passed through the columns. The contact block is rotatably provided on the lifting beam, and the contact block is used to abut against the outer wall of the hopper.

6. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 1, characterized in that: The load-bearing base is further provided with a mounting platform, a guide groove is provided on the top of the mounting platform, the pressure sensor is located in the guide groove, and the outer wall of the pressure rod is in contact with the inner wall of the guide groove.

7. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 1, characterized in that: A telescopic foot seat is provided at the bottom of the load-bearing base.

8. The inclined opposed multi-screw extruder feeding loss-in-weight scale according to claim 1, characterized in that: The number of the screws is 10.

9. A weighing method, based on the inclined opposed multi-screw extruder feeding loss-in-weight scale according to claims 2 to 8, characterized in that: The following steps are involved: Step 1: Place the hopper on the load-bearing base, make the pressure rod contact the pressure sensor, and adjust the pressure sensor to zero; Step 2: Mix and stir the materials evenly and put them into the hopper, so that the materials enter the feeding cavity of the material box through the docking port; Step 3: The pressure sensor measures the weight of the material in the hopper at this time, and the feeding amount is set through the operation panel; Step 4: The motor drives all the screws to rotate synchronously, and the push paddle pushes the material into the discharge chamber; Step 5: When the torque meter is triggered, change the direction of rotation of the motor to keep the screw rotating until the feeding task is completed.

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