Circumferential reciprocating rotation type quantitative metering device and metering control method

Abstract

The invention discloses a circumferential reciprocating rotation type quantitative metering device and a metering control method. The device comprises a rotary table arranged on an integrated plate, a hose fixing block, an interception assembly, a pipe pressing assembly, a hose positioning assembly, a rotation driving assembly and at least one elastic hose. The bottom of the rotary table is connected with the rotary driving assembly, the pipe pressing assembly and the hose positioning assembly are arranged at the top of the rotary table, and the elastic hose penetrates through the inner side of the pipe pressing assembly and surrounds the periphery of the hose positioning assembly. The interception assembly is used for controlling on-off of the elastic hose; the hose fixing block is arranged between the rotary table and the interception assembly and used for assisting installation and positioning of the elastic hose. Under driving of the rotary driving assembly, the rotary table drives the pipe pressing assembly and the hose positioning assembly to rotate in a reciprocating mode in the circumferential direction, the pipe pressing assembly extrudes the elastic hose, and therefore material metering conveying is achieved. The device has the advantages of low hose abrasion, high metering precision, stable displacement, capability of realizing independent material conveying control of a plurality of hoses and the like.

Description

Technical Field

[0001] This invention relates to the field of fluid metering and conveying technology, specifically to a circumferential reciprocating rotary quantitative metering device and a metering control method. Background Technology

[0002] Currently, in the field of fluid transfer pumps, traditional peristaltic pumps are widely used in various industries, including chemical, pharmaceutical, and food filling industries, due to their advantages such as no pollution, strong self-priming ability, simple structure, and good accuracy. A peristaltic pump is like squeezing a fluid-filled tube with your fingers; as your fingers slide forward, the fluid moves forward. However, in a peristaltic pump, rollers replace the fingers. Fluid is pumped by alternately squeezing and releasing the elastic delivery tube within the pump, much like squeezing a tube with two fingers. The rollers squeeze and rotate the elastic tube, creating positive and negative pressure chambers inside, which then flow out the fluid.

[0003] Traditional peristaltic pumps, which use multiple sets of rollers to roll and squeeze the flexible tubing, are primarily used for metered fluid delivery. Current peristaltic pumps achieve metered fluid delivery by controlling the motor to rotate the same number of times to obtain approximately the same volume of fluid. Under fixed speed conditions, within the same time interval, the motor rotates the same number of times, driving the rollers to squeeze the flexible tubing. The point where the rollers stop is the starting point of the next metered fluid delivery. Therefore, the starting and ending positions of the rollers are constantly changing, and their position also changes as they leave the working surface at the outlet.

[0004] However, peristaltic pumps exhibit pulsation during operation. When the roller extrusion component leaves the working surface at the outlet, it suddenly releases the occupied volume, causing a momentary decrease in liquid flow at the outlet and even liquid backflow. Furthermore, the larger the inner diameter of the hose, the larger the volume occupied by the extrusion component on the hose, and the more pronounced the flow pulsation at the outlet.

[0005] Due to the pulsation phenomenon, and the fact that the position of the roller extrusion component is constantly changing when it leaves the working surface at the outlet, the amount of fluid delivered within the same time interval may vary under a fixed rotation speed, resulting in a difference in the volume of fluid transported by the roller extrusion component on the hose.

[0006] In existing technologies, to ensure the accuracy of peristaltic pumps in metering fluid delivery and reduce flow deviation, the conventional approach is to use hoses with smaller inner diameters. The problem with this method is that, to deliver the same volume of fluid, the smaller diameter hose requires more rotations, which not only prolongs filling time and reduces efficiency, but also increases the frequency of hose compression, significantly shortening hose lifespan and reducing the stability of the peristaltic pump's metering delivery.

[0007] In addition, traditional peristaltic pumps use multiple sets of rollers to roll and squeeze the hose to transfer fluid. The inner side of the circumferential hose is rolled and squeezed by multiple sets of rollers, while the outer side of the circumferential hose is squeezed by a fixed arc plate. This causes uneven deformation of the hose inside and outside when the circumferential hose is squeezed, resulting in uneven stress on the hose inside and outside, large wear of the hose, and short service life. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to address the shortcomings of the prior art by providing a compact, high-precision filling device and a metering control method for a circumferential reciprocating rotary quantitative metering device with low hose wear.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: A circular reciprocating rotary quantitative measuring device includes an integrated plate, and a turntable, a hose fixing block, a interception component, a hose pressing component, a hose positioning component, a rotation drive component, a hose pressing drive component, and at least one elastic hose disposed on the integrated plate. The bottom of the turntable is connected to the rotary drive assembly. The pipe pressing assembly and the hose positioning assembly are both located on the top of the turntable, and the pipe pressing assembly is also connected to the pipe pressing drive assembly. The elastic hose passes through the inner side of the pipe pressing assembly and surrounds the outer circumference of the hose positioning assembly. The interception assembly is located at the output end of the elastic hose to control the on / off state of the elastic hose. The hose fixing block is located between the turntable and the interception assembly to assist in the installation and positioning of the elastic hose. Driven by the pipe pressing drive assembly, the pipe pressing drive assembly clamps the elastic hose. Driven by the rotary drive assembly, the turntable drives the pipe pressing assembly and the hose positioning assembly to rotate reciprocally in the circumferential direction. The pipe pressing assembly squeezes the elastic hose to achieve material metering and conveying.

[0010] As a further improvement of the present invention, the tube pressing assembly includes a movable tube pressing roller and a fixed tube pressing roller; the fixed tube pressing roller is disposed on the outer side of the top of the turntable, and the movable tube pressing roller and the hose positioning assembly are disposed together on the inner side of the top of the turntable, and the movable tube pressing roller is also connected to the tube pressing drive assembly, and the elastic hose passes between the movable tube pressing roller and the fixed tube pressing roller; under the drive of the tube pressing drive assembly, the movable tube pressing roller swings toward the fixed tube pressing roller to clamp the elastic hose.

[0011] As a further improvement of the present invention, the pressure tube drive assembly includes a second drive motor, a coupling, a central rotating shaft, a rocker arm, and a connecting rod; the second drive motor is fixed to the bottom of the integrated plate, the central rotating shaft passes through the turntable, the bottom of the central rotating shaft penetrates the integrated plate, and is rotatably connected to the output end of the second drive motor through the coupling; the top of the central rotating shaft is provided with a rocker arm, and the rocker arm is connected to the movable pressure tube roller through the connecting rod; under the drive of the second drive motor, the central rotating shaft drives the rocker arm to rotate, so as to realize that the connecting rod drives the movable pressure tube roller to move closer to or away from the fixed pressure tube roller.

[0012] As a further improvement of the present invention, the rotary drive assembly includes a first drive motor, a synchronous transmission assembly, and a hollow rotating shaft; the first drive motor is disposed at the bottom of the integrated plate, the hollow rotating shaft is rotatably nested around the outer periphery of the central rotating shaft and passes through the turntable, and the lower part of the hollow rotating shaft is connected to the output end of the first drive motor through the synchronous transmission assembly, and the upper part of the hollow rotating shaft is fixedly connected to the turntable; under the drive of the first drive motor, the hollow rotating shaft drives the turntable to rotate.

[0013] As a further improvement of the present invention, the synchronous transmission assembly includes a driving pulley, a synchronous belt, and a driven pulley; the driving pulley is connected to the output end of the first drive motor, the driven pulley is fixed to the bottom of the integrated plate, and the synchronous belt connects the driving pulley and the driven pulley respectively to transmit rotational driving force.

[0014] As a further improvement of the present invention, the hose positioning assembly includes a hose positioning roller shaft B, a hose positioning roller B, a hose positioning roller shaft A, and a hose positioning roller A; both the hose positioning roller shaft B and the hose positioning roller shaft A are disposed on the inner side of the top of the turntable; the hose positioning roller A is mounted on the hose positioning roller shaft A by a deep groove ball bearing, and the hose positioning roller B is mounted on the hose positioning roller shaft B by a deep groove ball bearing.

[0015] As a further improvement of the present invention, one end of the connecting rod is connected and fixed to the swing rod via bolt shaft A, and the other end of the connecting rod is connected and fixed to the movable pressure tube roller shaft via bolt shaft B. The movable pressure tube roller is connected to the movable pressure tube roller shaft via a deep groove ball bearing.

[0016] As a further improvement of the present invention, the upper end of the movable pressure roller is provided with an upper swing arm, and the lower end of the movable pressure roller is provided with a lower swing arm. One end of the upper swing arm and one end of the lower swing arm are both connected to the shaft of the movable pressure roller through a deep groove ball bearing. The other end of the upper swing arm is connected to the upper end of the hose positioning roller shaft B through a deep groove ball bearing, and the other end of the lower swing arm is connected to the lower end of the hose positioning roller shaft B through a deep groove ball bearing. Under the drive of the second drive motor, the movable pressure roller swings around the center line of the hose positioning roller shaft B to move closer to or away from the fixed pressure roller.

[0017] As a further improvement of the present invention, the interception component includes a third drive motor, an interception rotating block, and an interception fixing block. The third drive motor is disposed at the bottom of the integrated plate, and the output end of the third drive motor is connected to the interception rotating block. The output end of the elastic hose passes through the interception rotating block and the interception fixing block. Under the drive of the third drive motor, the interception rotating block moves closer to or away from the interception fixing block to clamp or loosen the elastic hose.

[0018] As a general technical concept, this invention also provides a measurement control method based on the above-mentioned circumferential reciprocating rotary quantitative measuring device, comprising the following steps: S1. The second drive motor drives the movable pressure roller to approach the fixed pressure roller to press the elastic hose. S2. The third drive motor drives the flow-blocking rotating block away from the flow-blocking fixed block to loosen the elastic hose; S3. The first drive motor drives the turntable to rotate in the forward direction. The movable pressure roller, the fixed pressure roller, the hose positioning roller B and the hose positioning roller A rotate in the forward direction with the turntable to squeeze the fluid in the elastic hose and transport the fluid. S4. When the turntable is detected to have rotated forward from the origin to the preset end angle position, the first drive motor stops driving the turntable to rotate; the third drive motor drives the flow-cutting rotating block to approach the flow-cutting fixed block, first cutting off the elastic hose, and then opening the movable pressure roller; by setting the angle of rotation of the turntable, the quantitative metering and delivery of fluid in the hose is completed. S5. When it is detected that the movable pressure roller is in the open state and the flow-stopping component at the output end of the flexible hose is in the clamped state, the first drive motor drives the turntable to rotate in the opposite direction, and the movable pressure roller, the fixed pressure roller, the hose positioning roller B and the hose positioning roller A rotate in the opposite direction along with the turntable. S6. When the turntable is detected to have rotated in the opposite direction from the end position to the starting origin position, the first drive motor stops driving the turntable to rotate, and the second drive motor drives the movable pressure tube roller to approach the fixed pressure tube roller to press the elastic hose; it returns to the initial state to wait for the next round of fluid metering and delivery.

[0019] Compared with the prior art, the advantages of the present invention are as follows: The present invention relates to a circumferential reciprocating rotary quantitative metering device and metering control method, which employs an integrated plate on which a turntable and a hose fixing block are mounted. An elastic hose is tensioned and relaxed by multiple sets of hose positioning rollers, all installed within the hose fixing block, keeping the elastic hose in a fixed state. Fixed pressure rollers, movable pressure rollers, and multiple sets of hose positioning rollers are mounted on the turntable component, rotating reciprocally with the turntable. An independently driven outlet interception assembly is installed outside the elastic hose to achieve independent on / off control of the elastic hose. During quantitative metering control, the movable pressure roller first presses the elastic hose, then drives the outlet interception control assembly to release the elastic hose, and then drives the turntable to rotate. The fixed pressure roller, movable pressure roller, and multiple sets of hose positioning rollers rotate with the turntable, compressing the fluid within the elastic hose for fluid delivery. When the set end angle value is reached, the turntable first stops rotating, then drives the outlet interception control assembly to clamp the elastic hose, achieving quantitative fluid delivery. The system allows for fixed-point metering and conveying based on demand, and the flexible hoses with different inner diameters can be replaced as needed to meet the requirements of both small and large loads while ensuring high precision. The rollers for squeezing and positioning the flexible hoses can rotate freely, reducing wear on the rollers and the flexible hoses, and significantly improving the service life of the flexible hoses. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the cross-sectional structure of the circumferential reciprocating quantitative measuring device in a specific embodiment of the present invention; Figure 2 This is a top view schematic diagram of the principle of the circular reciprocating rotary quantitative measuring device in a specific embodiment of the present invention; Figure 3 for Figure 2 Schematic diagram of the structural principle of the cross-section along the AA direction; Figure 4 for Figure 2 Schematic diagram of the structural principle of the sectional view along the BB direction; Figure 5 for Figure 2 A schematic diagram of the cross-sectional structure along the CC direction; Figure 6 This is a schematic diagram of the three-dimensional structure of the circular reciprocating rotary quantitative measuring device in a specific embodiment of the present invention; Figure 7 This is a schematic diagram of the movable pressure roller pressing the flexible hose during metering and conveying in a specific embodiment of the present invention; Figure 8 This is a schematic diagram showing the flow-blocking component being activated during metering and conveying in a specific embodiment of the present invention; Figure 9 This is a schematic diagram of the roller assembly rotating in the forward direction during metering and conveying in a specific embodiment of the present invention; Figure 10 This is a schematic diagram showing the roller assembly rotating forward to reach the end position during metering and conveying in a specific embodiment of the present invention; Figure 11 This is a schematic diagram showing the flow-blocking component being closed at the end position during metering and conveying in a specific embodiment of the present invention. Figure 12 This is a schematic diagram showing the movable pressure roller releasing the hose at the end position during metering and conveying in a specific embodiment of the present invention. Figure 13 This is a schematic diagram of the roller assembly rotating in the reverse direction to return during metering and conveying in a specific embodiment of the present invention; Figure 14 This is a schematic diagram showing the roller assembly rotating in the opposite direction to return to the starting position during metering and conveying in a specific embodiment of the present invention. Figure 15 This is a schematic diagram showing the movable pressure roller pressing the hose back to its original position during metering and conveying in a specific embodiment of the present invention.

[0021] Legend: 1. First drive motor; 2. Driving pulley; 3. Synchronous belt; 4. Driven pulley; 5. Hollow shaft; 6. Turntable; 7. Second drive motor; 8. Motor mounting base; 9. Coupling; 10. Central shaft; 11. Swing arm; 12. Bolt shaft A; 13. Connecting rod; 14. Bolt shaft B; 15. Movable pressure tube roller shaft; 16. Upper swing arm; 17. Movable pressure tube roller; 18. Lower swing arm; 19. Hose positioning roller shaft B; 20. Hose positioning roller B; 21. Hose positioning roller shaft A; 22. Elastic hose; 23. Hose positioning roller A; 24. Fixed pressure tube roller shaft; 25. Fixed pressure tube roller; 26. Third drive motor; 27. Flow-cutting rotating block; 28. Flow-cutting fixed block; 29. ​​Hose fixing block; 30. Integrated plate; 31. Cover. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0023] In the description of this invention, it should be understood that the terms "side", "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more unless otherwise explicitly specified.

[0025] Example like Figure 1 , Figure 2 and Figure 6 As shown, the circumferential reciprocating rotary quantitative metering device of the present invention includes an integrated plate 30, and a turntable 6, a hose fixing block 29, a cover 31, a interception assembly, a hose pressing assembly, a hose positioning assembly, a rotation drive assembly, a hose pressing drive assembly, and a flexible hose 22 disposed on the integrated plate 30. In other embodiments, multiple flexible hoses 22 may be provided simultaneously to improve filling efficiency.

[0026] The bottom of the turntable 6 is connected to the rotary drive assembly. The pipe pressing assembly and the hose positioning assembly are both located on the top of the turntable 6, and the pipe pressing assembly is also connected to the pipe pressing drive assembly. The flexible hose 22 passes through the inner side of the pipe pressing assembly and surrounds the outer circumference of the hose positioning assembly. The interception assembly is located at the output end of the flexible hose 22 to control the on / off state of the flexible hose 22 and prevent material backflow. The hose fixing block 29 is located between the turntable 6 and the interception assembly to assist in the installation and positioning of the flexible hose 22. Driven by the pipe pressing drive assembly, the pipe pressing drive assembly clamps the flexible hose 22. Driven by the rotary drive assembly, the turntable 6 drives the pipe pressing assembly and the hose positioning assembly to rotate reciprocally in the circumferential direction. The pipe pressing assembly squeezes the flexible hose 22 to achieve material metering and conveying.

[0027] The hose crimping assembly includes a movable hose crimping roller 17 and a fixed hose crimping roller 25. The fixed hose crimping roller 25 is located on the outer side of the top of the turntable 6, while the movable hose crimping roller 17 and the hose positioning assembly are located on the inner side of the top of the turntable 6. The movable hose crimping roller 17 is also connected to the hose crimping drive assembly, and the flexible hose 22 passes between the movable hose crimping roller 17 and the fixed hose crimping roller 25.

[0028] Specifically, such as Figure 5 As shown, the fixed pressure roller shaft 24 is mounted on the turntable 6, and the fixed pressure roller 25 is mounted on the fixed pressure roller shaft 24 via a deep groove ball bearing. The fixed pressure roller 25 can rotate freely and rotates with the turntable 6. Driven by the pressure roller drive assembly, the movable pressure roller 17 swings towards the fixed pressure roller 25 to clamp the elastic hose 22. Utilizing the rotation of the roller to achieve fluid medium compression helps reduce wear on the roller and the elastic hose 22.

[0029] like Figure 1 As shown. The pressure tube drive assembly includes a second drive motor 7, a coupling 9, a central rotating shaft 10, a rocker arm 11, and a connecting rod 13. The second drive motor 7 is fixed on a motor mounting base 8 at the bottom of the integrated plate 30. The central rotating shaft 10 passes through the cover 31 and the turntable 6. The bottom of the central rotating shaft 10 penetrates the integrated plate 30 and is rotatably connected to the output end of the second drive motor 7 via the coupling 9. The top of the central rotating shaft 10 is provided with a rocker arm 11, which is connected to the movable pressure tube roller 17 via the connecting rod 13. Driven by the second drive motor 7, the central rotating shaft 10 drives the rocker arm 11 to rotate, so that the connecting rod 13 drives the movable pressure tube roller 17 to move closer to or away from the fixed pressure tube roller 25.

[0030] like Figure 1 As shown, the rotary drive assembly includes a first drive motor 1, a synchronous transmission assembly, and a hollow rotating shaft 5. The first drive motor 1 is located at the bottom of the integrated plate 30. The hollow rotating shaft 5 is rotatably nested around the outer periphery of the central rotating shaft 10 and passes through the cover 31 and the turntable 6. The hollow rotating shaft 5 is rotatably connected to the cover 31 and to the central rotating shaft 10 via deep groove ball bearings. The lower part of the hollow rotating shaft 5 is connected to the output end of the first drive motor 1 via the synchronous transmission assembly, and the upper part of the hollow rotating shaft 5 is fixedly connected to the turntable 6. Driven by the first drive motor 1, the hollow rotating shaft 5 drives the turntable 6 to rotate.

[0031] like Figure 1 As shown, the synchronous transmission assembly includes a driving pulley 2, a synchronous belt 3, and a driven pulley 4. The driving pulley 2 is connected to the output end of the first drive motor 1, the driven pulley 4 is fixed to the top of the motor mounting base 8, and the synchronous belt 3 connects the driving pulley 2 and the driven pulley 4 respectively to transmit rotational driving force.

[0032] like Figure 2 and Figure 4 As shown, the hose positioning assembly includes a hose positioning roller shaft B19, a hose positioning roller B20, a hose positioning roller shaft A21, and a hose positioning roller A23. Both hose positioning roller shafts B19 and A21 are located on the inner side of the top of the turntable 6. Hose positioning roller A23 is mounted on hose positioning roller shaft A21 via a deep groove ball bearing, allowing it to rotate freely and follow the rotation of the turntable 6. Hose positioning roller B20 is mounted on hose positioning roller shaft B19 via a deep groove ball bearing, allowing it to rotate freely and follow the rotation of the turntable 6. In this embodiment, the elastic hose 22 is tensioned and relaxed by multiple sets of hose positioning rollers A23 and B20, and is fixed in the hose fixing block 29. The positioning of the elastic hose 22 is simple and reliable, easy to disassemble and assemble, and convenient for cleaning and disinfection after disassembly.

[0033] like Figure 2 , Figure 3 and Figure 4 As shown, one end of the connecting rod 13 is connected to the bolt shaft A12 via a deep groove ball bearing. The bolt shaft A12 is connected and fixed to the rocker arm 11. The other end of the connecting rod 13 is connected to the bolt shaft B14 via a deep groove ball bearing. The bolt shaft B14 is connected and fixed to the movable pressure tube roller shaft 15. The movable pressure tube roller 17 is connected to the movable pressure tube roller shaft 15 via a deep groove ball bearing.

[0034] Furthermore, the movable pressure roller 17 has an upper swing arm 16 at its upper end and a lower swing arm 18 at its lower end. One end of the upper swing arm 16 and one end of the lower swing arm 18 are both connected to the movable pressure roller shaft 15 via deep groove ball bearings. The other end of the upper swing arm 16 is connected to the upper end of the hose positioning roller shaft B19 via a deep groove ball bearing, and the other end of the lower swing arm 18 is connected to the lower end of the hose positioning roller shaft B19 via a deep groove ball bearing. Driven by the second drive motor 7, the movable pressure roller 17 swings around the centerline of the hose positioning roller shaft B19 to move closer to or away from the fixed pressure roller 25, thereby squeezing or releasing the elastic hose 22.

[0035] like Figure 6 As shown, the interception assembly includes a third drive motor 26, a flow-intercepting rotating block 27, and a flow-intercepting fixing block 28. The third drive motor 26 is located at the bottom of the integrated plate 30, and its output end is connected to the flow-intercepting rotating block 27. The output end of the elastic hose 22 passes between the flow-intercepting rotating block 27 and the flow-intercepting fixing block 28. Driven by the third drive motor 26, the flow-intercepting rotating block 27 moves closer to or further away from the flow-intercepting fixing block 28 to clamp or release the elastic hose 22.

[0036] In this embodiment, the working process of the circumferential reciprocating rotary quantitative measuring device is as follows: Figures 7 to 15 As shown in the image.

[0037] like Figure 7 As shown, the movable pressure roller 17 and the fixed pressure roller 25 press the elastic hose 22 together, and the quantitative metering device is in its initial working state.

[0038] like Figure 8 As shown, it is detected that the movable pressure roller 17 and the fixed pressure roller 25 have pressed the elastic hose 22, and the flow-stopping rotating block 27 rotates to release the elastic hose 22.

[0039] like Figure 9 As shown, it is detected that the movable pressure roller 17 and the fixed pressure roller 25 have pressed the elastic hose 22, the flow-stopping rotating block 27 rotates, the elastic hose 22 has been released, the turntable 6 rotates in the forward direction, and drives the movable pressure roller 17 and the fixed pressure roller 25 to squeeze the elastic hose 22 for filling. At the same time, the inlet section of the elastic hose 22 automatically draws back to replenish the liquid into the hose 22.

[0040] like Figure 10 As shown, the turntable 6 rotates to the set angle value and then reaches the end position before stopping.

[0041] like Figure 11 As shown, it was detected that the turntable 6 had stopped, and the flow-blocking rotating block 27 rotated in the opposite direction, clamping the elastic hose 22.

[0042] like Figure 12 As shown, the flow-stopping rotating block 27 rotates in the opposite direction, clamping the elastic hose 22, while the movable pressure roller 17 and the fixed pressure roller 25 release the elastic hose 22.

[0043] like Figure 13 As shown, the flow-blocking rotating block 27 is detected to rotate in the opposite direction, clamping the elastic hose 22. The movable pressure roller 17 and the fixed pressure roller 25 have released the elastic hose 22. The turntable 6 rotates in the opposite direction, driving the movable pressure roller 17 and the fixed pressure roller 25 to rotate back to their original positions.

[0044] like Figure 14 As shown, the turntable 6 rotates in the opposite direction by the set angle value, reaches the initial origin position, and then stops rotating.

[0045] like Figure 15 As shown, the turntable 6 has stopped, the flow-stopping rotating block 27 rotates in the forward direction, clamping the elastic hose 22. The quantitative metering device returns to its initial working state.

[0046] In this embodiment, a measurement control method based on the above-mentioned circumferential reciprocating rotary quantitative measuring device is also provided, including the following steps: S1. The second drive motor 7 drives the movable pressure roller 17 to approach the fixed pressure roller 25 to press the elastic hose 22.

[0047] S2. The third drive motor 26 drives the flow-blocking rotating block 27 away from the flow-blocking fixed block 28 to loosen the elastic hose 22, so that the output end of the elastic hose 22 remains unobstructed.

[0048] S3. The first drive motor 1 drives the turntable 6 to rotate in the forward direction. The movable pressure roller 17, the fixed pressure roller 25, the hose positioning roller B20 and the hose positioning roller A23 rotate in the forward direction with the turntable 6 to squeeze the fluid in the elastic hose 22 and transport the fluid.

[0049] S4. When the turntable 6 is detected to have rotated forward from its origin to the preset end angle position, the first drive motor 1 stops driving the turntable 6 to rotate; the third drive motor 26 drives the flow-cutting rotating block 27 to approach the flow-cutting fixed block 28, first cutting off the elastic hose 22, and then opening the movable pressure roller 17. By setting the rotation angle of the turntable, the quantitative metering and delivery of the fluid in the hose is completed. It can be understood that the angle value of the turntable 6 rotating to the end can be set according to the actual metering and delivery requirements.

[0050] S5. When it is detected that the movable pressure roller 17 is in the open state and the flow-stopping component at the output end of the elastic hose 22 is in the clamped state, the first drive motor 1 drives the turntable 6 to rotate in the opposite direction, and the movable pressure roller 17, the fixed pressure roller 25, the hose positioning roller B20 and the hose positioning roller A23 rotate in the opposite direction along with the turntable 6.

[0051] S6. When the turntable 6 is detected to have rotated in the opposite direction from the end position to the starting origin position, the first drive motor 1 stops driving the turntable 6 to rotate, and the second drive motor 7 drives the movable pressure tube roller 17 to approach the fixed pressure tube roller 25 to press the elastic hose 22. The system returns to its initial state to await the next round of fluid metering and delivery.

[0052] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A circular reciprocating rotary quantitative measuring device, characterized in that, It includes an integrated plate (30), a turntable (6) disposed on the integrated plate (30), a hose fixing block (29), a cut-off assembly, a hose pressing assembly, a hose positioning assembly, a rotation drive assembly, a hose pressing drive assembly and at least one flexible hose (22). The bottom of the turntable (6) is connected to the rotary drive assembly. The pipe pressing assembly and the hose positioning assembly are both located on the top of the turntable (6). The pipe pressing assembly is also connected to the pipe pressing drive assembly. The elastic hose (22) passes through the inner side of the pipe pressing assembly and surrounds the outer periphery of the hose positioning assembly. The interception assembly is located at the output end of the elastic hose (22) to control the opening and closing of the elastic hose (22). The hose fixing block (29) is located between the turntable (6) and the interception assembly to assist in the installation and positioning of the elastic hose (22). Under the drive of the pipe pressing drive assembly, the pipe pressing drive assembly clamps the elastic hose (22). Under the drive of the rotary drive assembly, the turntable (6) drives the pipe pressing assembly and the hose positioning assembly to rotate back and forth in the circumferential direction. The pipe pressing assembly squeezes the elastic hose (22) to realize material metering and conveying.

2. The circular reciprocating rotary quantitative measuring device according to claim 1, characterized in that, The hose pressing assembly includes a movable hose pressing roller (17) and a fixed hose pressing roller (25); the fixed hose pressing roller (25) is located on the outer side of the top of the turntable (6), and the movable hose pressing roller (17) and the hose positioning assembly are located on the inner side of the top of the turntable (6). The movable hose pressing roller (17) is also connected to the hose pressing drive assembly. The elastic hose (22) passes between the movable hose pressing roller (17) and the fixed hose pressing roller (25). Under the drive of the hose pressing drive assembly, the movable hose pressing roller (17) swings toward the fixed hose pressing roller (25) to clamp the elastic hose (22).

3. The circular reciprocating rotary quantitative measuring device according to claim 2, characterized in that, The pressure tube drive assembly includes a second drive motor (7), a coupling (9), a central rotating shaft (10), a rocker arm (11), and a connecting rod (13). The second drive motor (7) is fixed at the bottom of the integrated plate (30). The central rotating shaft (10) passes through the turntable (6). The bottom of the central rotating shaft (10) passes through the integrated plate (30) and is rotatably connected to the output end of the second drive motor (7) through the coupling (9). The top of the central rotating shaft (10) is provided with a rocker arm (11). The rocker arm (11) is connected to the movable pressure tube roller (17) through the connecting rod (13). Under the drive of the second drive motor (7), the central rotating shaft (10) drives the rocker arm (11) to rotate so that the connecting rod (13) drives the movable pressure tube roller (17) to approach or move away from the fixed pressure tube roller (25).

4. The circular reciprocating rotary quantitative measuring device according to claim 3, characterized in that, The rotary drive assembly includes a first drive motor (1), a synchronous transmission assembly, and a hollow rotating shaft (5); the first drive motor (1) is located at the bottom of the integrated plate (30), the hollow rotating shaft (5) is rotatably nested around the outer periphery of the central rotating shaft (10) and passes through the turntable (6), and the lower part of the hollow rotating shaft (5) is connected to the output end of the first drive motor (1) through the synchronous transmission assembly, and the upper part of the hollow rotating shaft (5) is connected and fixed to the turntable (6); under the drive of the first drive motor (1), the hollow rotating shaft (5) drives the turntable (6) to rotate.

5. The circular reciprocating rotary quantitative measuring device according to claim 4, characterized in that, The synchronous transmission assembly includes a driving pulley (2), a synchronous belt (3), and a driven pulley (4); the driving pulley (2) is connected to the output end of the first drive motor (1), the driven pulley (4) is fixed to the bottom of the integrated plate (30), and the synchronous belt (3) is connected to the driving pulley (2) and the driven pulley (4) respectively to transmit rotational driving force.

6. The circular reciprocating rotary quantitative measuring device according to claim 3, characterized in that, The hose positioning assembly includes a hose positioning roller shaft B (19), a hose positioning roller B (20), a hose positioning roller shaft A (21), and a hose positioning roller A (23); both the hose positioning roller shaft B (19) and the hose positioning roller shaft A (21) are located on the inner side of the top of the turntable (6); the hose positioning roller A (23) is mounted on the hose positioning roller shaft A (21) by a deep groove ball bearing, and the hose positioning roller B (20) is mounted on the hose positioning roller shaft B (19) by a deep groove ball bearing.

7. The circular reciprocating rotary quantitative measuring device according to claim 6, characterized in that, One end of the connecting rod (13) is connected and fixed to the swing rod (11) via bolt shaft A (12), and the other end of the connecting rod (13) is connected and fixed to the movable pressure tube roller shaft (15) via bolt shaft B (14). The movable pressure tube roller (17) is connected to the movable pressure tube roller shaft (15) via a deep groove ball bearing.

8. The circular reciprocating rotary quantitative measuring device according to claim 7, characterized in that, The movable pressure roller (17) is provided with an upper swing arm (16) at its upper end and a lower swing arm (18) at its lower end. One end of the upper swing arm (16) and one end of the lower swing arm (18) are connected to the movable pressure roller shaft (15) through a deep groove ball bearing. The other end of the upper swing arm (16) is connected to the upper end of the hose positioning roller shaft B (19) through a deep groove ball bearing, and the other end of the lower swing arm (18) is connected to the lower end of the hose positioning roller shaft B (19) through a deep groove ball bearing. Under the drive of the second drive motor (7), the movable pressure roller (17) swings around the center line of the hose positioning roller shaft B (19) to move closer to or away from the fixed pressure roller (25).

9. The circumferential reciprocating rotary quantitative measuring device according to any one of claims 1 to 5, characterized in that, The interception assembly includes a third drive motor (26), a flow-intercepting rotating block (27), and a flow-intercepting fixing block (28). The third drive motor (26) is located at the bottom of the integrated plate (30), and the output end of the third drive motor (26) is connected to the flow-intercepting rotating block (27). The output end of the elastic hose (22) passes between the flow-intercepting rotating block (27) and the flow-intercepting fixing block (28). Under the drive of the third drive motor (26), the flow-intercepting rotating block (27) moves closer to or further away from the flow-intercepting fixing block (28) to clamp or loosen the elastic hose (22).

10. A measurement control method based on the circumferential reciprocating rotary quantitative measuring device according to any one of claims 1 to 9, characterized in that, Includes the following steps: S1. The second drive motor (7) drives the movable pressure roller (17) to approach the fixed pressure roller (25) to press the elastic hose (22). S2. The third drive motor (26) drives the flow-blocking rotating block (27) away from the flow-blocking fixed block (28) to loosen the elastic hose (22). S3. The first drive motor (1) drives the turntable (6) to rotate in the forward direction. The movable pressure roller (17), the fixed pressure roller (25), the hose positioning roller B (20) and the hose positioning roller A (23) rotate in the forward direction along with the turntable (6) to squeeze the fluid in the elastic hose (22) and carry out fluid transportation. S4. When the turntable (6) is detected to have rotated from the origin to the preset end angle position, the first drive motor (1) stops driving the turntable (6) to rotate; the third drive motor (26) drives the flow-cutting rotating block (27) to approach the flow-cutting fixed block (28), first cutting off the elastic hose (22), and then opening the movable pressure roller (17); by setting the rotation angle of the turntable (6), the quantitative metering and delivery of the fluid in the hose is completed; S5. When it is detected that the movable pressure roller (17) is in the open state and the flow-stopping component at the output end of the elastic hose (22) is in the clamped state, the first drive motor (1) drives the turntable (6) to rotate in the opposite direction, and the movable pressure roller (17), the fixed pressure roller (25), the hose positioning roller B (20) and the hose positioning roller A (23) rotate in the opposite direction along with the turntable (6); S6. When it is detected that the turntable (6) has rotated in the opposite direction from the end position to the starting origin position, the first drive motor (1) stops driving the turntable (6) to rotate, and the second drive motor (7) drives the movable pressure tube roller (17) to approach the fixed pressure tube roller (25) to press the elastic hose (22); return to the initial state to wait for the next round of fluid metering and delivery.

Images