A linear continuous filling peristaltic pump

Abstract

The present invention discloses a linear continuous filling peristaltic pump, comprising: a pump body assembly, a pipeline assembly, a pressure tube assembly and a linear reciprocating motion assembly; the pipeline assembly comprises a hose and a hose bracket assembly, the hose bracket assembly is arranged on the side of the pump body, the hose is suspended at one end of the hose bracket assembly, the input end and the output end of the hose are both fixed at the other end of the hose bracket assembly, and the hose hanging part and the two ends are arranged in a straight line; the linear reciprocating motion assembly and the pressure tube assembly are both installed on the pump body assembly, and the linear reciprocating motion assembly is used to drive the pressure tube assembly to perform linear reciprocating motion; within one cycle of the reciprocating motion of the pressure tube assembly, the pressure tube assembly squeezes or releases the hose along the hose input end to the hose hanging part, and the hose hanging part to the hose output end, respectively, to achieve continuous filling and metering of materials. The present invention has the advantages of compact structure, high filling efficiency, stable metering, etc., and realizes continuous filling of materials by a linear peristaltic pump.

Description

Technical Field

[0001] The invention mainly relates to the technical field of fluid filling pumps, and in particular to a linear continuous filling peristaltic pump. Background Art

[0002] At present, the multi-position mechanical filling pumps used in the field of fluid filling include plunger pumps, peristaltic pumps, syringe pumps, etc. Among them, peristaltic pumps are widely used in various industries, including chemical industry, pharmaceutical industry, food filling industry, etc., due to their advantages of no pollution and better accuracy. In the linear peristaltic pump filling system, the hose is arranged in a straight line between the input and output ends of the peristaltic pump. In order to meet the high requirements of fluid filling in terms of accuracy and stability, the hose needs to be squeezed by rollers during the operation of the peristaltic pump, just like squeezing the hose with two fingers. The roller squeezes the hose and rotates, forming positive and negative pressure chambers in the hose, and the liquid flows and discharges. In one cycle of the reciprocating motion of the roller, only the filling stroke squeezes the hose for filling, and the reset stroke is in the state of loosening the hose, resulting in the existing peristaltic pump filling system being only suitable for small filling volumes, and a section of the empty stroke is wasted, which not only increases the filling time interval, but also reduces the filling efficiency and causes energy waste, which limits the application scope of the peristaltic pump to a certain extent. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a linear continuous filling peristaltic pump with simple principle, compact structure, small installation volume, high filling efficiency and stable metering.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A linear continuous filling peristaltic pump comprises: a pump body assembly, a pipeline assembly, a pressure tube assembly and a linear reciprocating motion assembly; the pipeline assembly comprises a hose and a hose bracket assembly, the hose bracket assembly is arranged on the side of the pump body, the hose is suspended at one end of the hose bracket assembly, the input end and the output end of the hose are both fixed to the other end of the hose bracket assembly, and the hose hanging part and the two ends are arranged in a straight line; the linear reciprocating motion assembly and the pressure tube assembly are both installed on the pump body assembly, and the linear reciprocating motion assembly is used to drive the pressure tube assembly to perform linear reciprocating motion; within one cycle of the reciprocating motion of the pressure tube assembly, the pressure tube assembly squeezes or releases the hose along the hose input end to the hose hanging part, and the hose hanging part to the hose output end, respectively, to achieve continuous filling and metering of materials.

[0006] As a further improvement of the present invention, the hose bracket assembly includes a mounting frame pillar, a mounting frame support block and a mounting frame; mounting frame support blocks parallel to each other are provided at both ends of the mounting frame pillar, the ends of the mounting frame support blocks are connected to the mounting frame, and hose support blocks and hose fixings are respectively provided on the parallel mounting frames, the hose support blocks are used to hang the hose, and the hose fixings are used to fix the input end and the output end of the hose.

[0007] As a further improvement of the present invention, a groove for fixing the hose is provided on the hose support block, the hose is surrounded in the groove, and the hose is installed between the two mounting frames in an inverted U shape.

[0008] As a further improvement of the present invention, the pump body assembly includes a pump body seat and a pump body cover; the linear reciprocating motion assembly includes a No. 1 transmission motor, a coupling and a screw assembly, the No. 1 transmission motor is connected to the screw assembly through a coupling, the screw assembly is passed through the pump body seat, and the screw assembly is connected to the pump body cover, and under the drive of the No. 1 transmission motor, the screw assembly drives the pump body cover to perform linear reciprocating motion.

[0009] As a further improvement of the present invention, the pipe pressing assembly includes a No. 2 transmission motor, a ball spline shaft assembly and a roller assembly, the roller assembly is arranged on the top of the pump body cover, one end of the ball spline shaft assembly is connected to the driving end of the No. 2 transmission motor, and the other end of the ball spline shaft assembly passes through the pump body seat and the pump body cover in sequence, and is connected to the roller assembly. Under the drive of the No. 2 transmission motor, the ball spline shaft assembly drives the roller assembly to squeeze or loosen the hose.

[0010] As a further improvement of the present invention, the roller assembly includes a roller mounting seat, a roller mounting shaft and a roller, the roller mounting seat is provided with multiple roller mounting shafts, the end of the roller mounting shaft is provided with a roller, rollers are provided on both sides of the hose, and the roller mounting shaft is rotatably connected to the ball spline shaft assembly; within a cycle of linear reciprocating motion of the roller assembly, the No. 2 transmission motor drives the ball spline shaft assembly to rotate, so as to drive the corresponding roller mounting shaft to rotate, so as to realize the corresponding roller squeezing or loosening the hose.

[0011] As a further improvement of the present invention, the multiple roller mounting shafts include an eccentric shaft and a fixed shaft, and the eccentric shaft is rotatably connected to the ball spline shaft assembly; within a cycle of linear reciprocating motion of the roller assembly, the No. 2 transmission motor drives the ball spline shaft assembly to rotate, so as to drive the corresponding eccentric shaft to approach or move away from the adjacent fixed shaft, so that the corresponding rollers can squeeze or loosen the hose in sequence from the hose input end to the hose hanging part, and from the hose hanging part to the hose output end.

[0012] As a further improvement of the present invention, the plurality of roller mounting shafts are eccentric shafts, and the eccentric shafts are rotatably connected to the ball spline shaft assembly. During one cycle of linear reciprocating motion of the roller assembly, the No. 2 transmission motor drives the ball spline shaft assembly to rotate, so as to drive adjacent eccentric shafts to approach or move away from each other, so that the corresponding rollers squeeze or loosen the hose in turn from the hose input end to the hose hanging part, and from the hose hanging part to the hose output end.

[0013] As a further improvement of the present invention, the roller assembly further includes a connecting rod, and the connecting rod is used to connect eccentric shafts with the same deflection direction.

[0014] As a further improvement of the present invention, the roller assembly also includes a rocker arm sleeve, a cross connecting rod and an adjusting rocker arm. The ball spline shaft assembly, rocker arm sleeve, cross connecting rod, adjusting rocker arm and eccentric shaft are connected in sequence to realize the ball spline shaft assembly driving the eccentric shaft to rotate.

[0015] As a further improvement of the present invention, the middle portion of the roller mounting shaft is mounted on the roller mounting seat, and rollers are provided at both ends of the roller mounting shaft.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] 1. The linear continuous filling peristaltic pump of the present invention hangs the hose on one end of the hose support assembly, fixes the input end and the output end of the hose on the other end of the hose support assembly, and arranges the hose hanging part and the two ends in a straight line, so that the hose appears as two straight tubes in the peristaltic pump system. Compared with the existing single-tube linear peristaltic pump, the filling volume of the peristaltic pump is effectively increased, and the installation volume of the hose is reduced. In a cycle in which the linear reciprocating motion assembly drives the tube pressing assembly to perform linear reciprocating motion, the tube pressing assembly squeezes and fills the hose between the hose input end and the hose hanging part in the forward stroke, and squeezes and fills the hose between the hose hanging part and the hose output end in the reset stroke, thereby realizing continuous filling of the peristaltic pump, saving filling time, and increasing the filling volume of the peristaltic pump in one stroke cycle, and can simultaneously meet the equipment requirements of small and large filling volumes.

[0018] 2. The linear continuous filling peristaltic pump of the present invention connects the pressure tube assembly with the linear reciprocating screw assembly, and simultaneously sets an eccentric shaft and a fixed shaft as the roller mounting shaft on the roller mounting seat, or sets all the roller mounting shafts as eccentric shafts, and the eccentric shaft is rotatably connected with the ball spline shaft assembly. Under the drive of the No. 1 transmission motor, the roller performs linear reciprocating motion, and under the drive of the No. 2 motor, the eccentric shaft will approach or move away from the fixed shaft, or the adjacent eccentric shafts will approach or move away from each other, so that the roller arranged on the outside of the hose can squeeze or release the hose from the hose input end to the hose hanging part, and from the hose hanging part to the hose output end in turn, thereby realizing the continuous filling of the peristaltic pump. At the same time, since the hose is fixed on the hose bracket assembly, there will be no relative movement between the hose and the roller, which effectively ensures the filling accuracy of the peristaltic pump.

[0019] 3. The linear continuous filling peristaltic pump of the present invention realizes the connection between eccentric shafts with the same deflection direction through a connecting rod, and realizes the rotational connection between the eccentric shaft and the ball spline shaft assembly through a rocker sleeve, a cross connecting rod and an adjusting rocker rod, which not only improves the transmission stability between the ball spline shaft assembly and the eccentric shaft, but also realizes the synchronous rotation of multiple groups of eccentric shafts, realizes the roller assembly to extrude the hose according to a preset sequence, and realizes the peristaltic pump to perform continuous high-precision canning.

[0020] 4. The linear continuous filling peristaltic pump of the present invention fixes the middle part of the roller mounting shaft on the roller mounting seat, and rollers are arranged at both ends of the roller mounting shaft. It can not only reduce the installation volume of the roller assembly while well controlling the extrusion of a single hose, but also can realize the extrusion control of two hoses at the same time, thereby greatly improving the filling efficiency of the peristaltic pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the structural principle of the linear continuous filling peristaltic pump in Example 1 of the present invention.

[0022] Figure 2 Schematic diagram of the partial structural principle of the linear continuous filling peristaltic pump in Example 1 of the present invention.

[0023] Figure 3 for Figure 2 Schematic diagram of the structural principle at A in the middle.

[0024] Figure 4 This is a schematic diagram of the partial structural principle of the linear continuous filling peristaltic pump in Example 1 of the present invention from another perspective.

[0025] Figure 5 Schematic diagram of the partial structural principle of the linear continuous filling peristaltic pump in Example 2 of the present invention.

[0026] Figure 6 Schematic diagram of the partial structural principle of the linear continuous filling peristaltic pump in Example 3 of the present invention.

[0027] Legend:

[0028] 1. Spline shaft; 2. Pump body seat; 3. Pump body cover; 4. Mounting base; 5. Mounting rear seat; 6. Roller mounting shaft; 61. First roller mounting shaft; 62. Second roller mounting shaft; 63. Third roller mounting shaft; 64. Fourth roller mounting shaft; 7. Mounting frame support; 8. Mounting frame support block; 9. Mounting frame; 10. Hose support block; 11. Hose; 12. Mounting front seat; 13. Roller; 131. First roller; 132. Second roller; 133. Third roller; 134. Fourth Roller; 14. Hose fixing; 15. Hose connector; 16. Ball screw; 17. Screw nut; 18. Spline connecting rod; 19. Motor support plate; 20. Lower limit sleeve of pressure tube; 21. Coupling; 22. Motor mounting plate; 23. No. 1 transmission motor; 24; No. 2 transmission motor; 25. Origin limit block; 26. Pressure tube rocker; 27. Pressure tube connecting rod; 28. Spline rocker sleeve; 29. ​​Spline bearing; 30. Connecting rod; 31. Rocker sleeve; 32. Cross connecting rod; 33. Adjustment rocker. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0030] Example 1

[0031] like Figures 1 to 4 As shown, a linear continuous filling peristaltic pump of the present invention comprises: a pump body assembly, a pipeline assembly, a pressure tube assembly and a linear reciprocating motion assembly. The pipeline assembly comprises a hose 11 and a hose bracket assembly, the hose bracket assembly is arranged on the side of the pump body, the middle of the hose 11 is suspended on the top of the hose bracket assembly, the input end and the output end of the hose 11 are fixed side by side at the bottom end of the hose bracket assembly, and the middle of the hose 11 and the two ends are arranged in a straight line. The linear reciprocating motion assembly and the pressure tube assembly are both installed on the pump body assembly, and the linear reciprocating motion assembly is used to drive the pressure tube assembly to perform linear reciprocating motion. In one cycle of the linear reciprocating motion of the pressure tube assembly, the pressure tube assembly first extrude the hose along the input end of the hose 11 to the middle of the hose 11, and then extrude the hose 11 along the middle of the hose 11 to the output end of the hose 11, so as to realize continuous filling and metering of materials. It can be understood that in other embodiments, the hanging part of the hose 11 can be 2 / 3 or 1 / 3 of the length of the hose 11, etc., as long as the hose 11 is hung on the hose support assembly, the hose pressing assembly can continuously squeeze the hose 11 within one cycle of linear reciprocating motion to meet the continuous filling requirements of the peristaltic pump system.

[0032] In this embodiment, the middle of the hose 11 is suspended on the top of the hose support assembly, the input end and the output end of the hose 11 are fixed side by side on the bottom end of the hose support assembly, and the middle of the hose 11 and the two ends are arranged in a straight line, so that the hose 11 appears as two straight tubes in the peristaltic pump system. Compared with the existing single-tube linear peristaltic pump, the filling volume of the peristaltic pump is effectively increased, and the installation volume of the hose 11 is reduced. In a cycle in which the linear reciprocating motion assembly drives the tube pressing assembly to perform linear reciprocating motion, the tube pressing assembly squeezes and fills the hose 11 between the input end of the hose 11 and the middle part of the hose 11 in the forward stroke, and the tube pressing assembly squeezes and fills the hose 11 between the middle part of the hose 11 and the output end of the hose 11 in the reset stroke, thereby realizing continuous filling of the peristaltic pump, which not only saves filling time, but also increases the filling volume of the peristaltic pump in one stroke cycle, and can simultaneously meet the equipment requirements of small and large filling volumes.

[0033] like Figure 2 As shown, in this embodiment, the hose support assembly includes a mounting frame pillar 7, a mounting frame support block 8 and a mounting frame 9. Mounting frame support blocks 8 are provided at both ends of the mounting frame pillar 7, and the ends of the mounting frame support blocks 8 are connected to the mounting frames 9. Hose support blocks 10 and hose fixings 14 are provided on the two parallel mounting frames 9 respectively. The hose support block 10 is used to hang the middle part of the hose 11, and the hose fixing 14 is used to fix the input end and the output end of the hose 11. By arranging two mounting frame support blocks 8 in parallel at both ends of 7 and connecting the mounting frame 9 at the ends of the mounting frame support blocks 8, a hose support assembly with a stable structure and a small installation volume is obtained, and at the same time, it also effectively ensures that the hose 11 is accurately positioned, ensuring that the hose 11 can always remain in a straight state, so as to improve the filling accuracy and stability of the peristaltic pump.

[0034] Furthermore, in this embodiment, in order to improve the firmness of the installation of the hose 11, a groove (not shown in the figure) for fixing the hose 11 is provided on the hose support block 10, and the middle part of the hose 11 is surrounded in the groove. This not only realizes the positioning and installation of the hose 11, but also provides a buffer transition for the folding area in the middle part of the hose 11, so as to avoid a large bending in the middle part of the hose 11 and affect the filling efficiency. Furthermore, the hose fixing part 14 can be a joint specification part, and the input end and the output end of the hose 11 are both provided with a hose connector 15. The hose connector 15 is clamped in the joint specification part, so that the input end and the output end of the hose 11 can be fixedly connected to the mounting bracket 9, which is convenient and efficient. It can be understood that the installation process of the hose 11 includes first clamping the hose connector 15 at the input end of the hose in a joint specification part, then winding the middle part of the hose 11 along the groove on the hose support block 10 in an arc shape to realize the folding of the hose 11, and finally clamping the hose connector 15 at the output end of the hose in another joint specification part, and the hose 11 is finally installed between the two mounting brackets 9 in an inverted U shape.

[0035] like Figure 1 and Figure 2 As shown, in this embodiment, the pump body assembly includes a pump body seat 2 and a pump body cover 3. Figure 4 As shown, in this embodiment, the linear reciprocating motion assembly includes a No. 1 transmission motor 23, a coupling 21 and a screw assembly, and the screw assembly includes a ball screw 16 and a screw nut 17. The No. 1 transmission motor 23 is connected to the ball screw 16 through the coupling 21, the ball screw 16 is inserted into the pump body seat 2, and the screw nut 17 is connected to the pump body cover 3. Under the drive of the No. 1 transmission motor 23, the ball screw 16 drives the pump body cover 3 to perform linear reciprocating motion. It can be understood that in this embodiment, the No. 1 transmission motor 23 can specifically adopt a servo motor. In other embodiments, the No. 1 transmission motor 23 can also adopt other forms of driving force mechanisms, as long as it can provide the driving force required for the ball screw 16 to drive the pump body cover 3 to perform linear reciprocating motion.

[0036] like Figure 1 , Figure 2 and Figure 4As shown, in this embodiment, the tube pressing assembly includes a second transmission motor 24, a ball spline shaft assembly and a roller assembly, the ball spline shaft assembly includes a spline shaft 1, a spline swing arm sleeve 28 and a spline bearing 29, and the roller assembly is arranged on the top of the pump body cover 3. It can be understood that in this embodiment, the second transmission motor 24 can specifically adopt a driving mode of a servo motor with a brake and a reducer. The driving end of the servo motor with a brake is connected to the reducer, and the output end of the reducer is connected to the tube pressing swing arm 26. The tube pressing swing arm 26 is connected to the tube pressing connecting rod 27 through a pin, and the tube pressing connecting rod 27 is connected to the spline connecting rod 18 through a pin. The spline connecting rod 18 is equipped with a deep groove bearing and is connected to the spline swing arm sleeve 28 through a pin. The spline swing arm sleeve 28 is connected to the spline shaft 1 through a spline bearing 29, that is, the transmission connection between the spline shaft 1 and the second transmission motor 24 is realized. The other end of the spline shaft 1 away from the spline bearing 29 passes through the pump body seat 2 and the pump body cover 3 in sequence, and is connected to the roller assembly. Driven by the servo motor with brake and the reducer, the spline shaft 1 drives the roller assembly to squeeze or loosen the hose 11. By setting the pump body seat 2 and the pump body cover 3, the spline shaft 1 and the ball screw 16 are encapsulated, which not only helps to improve the overall appearance of the peristaltic pump, but also prevents foreign impurities from mixing into the peristaltic pump, and improves the cleanliness of the peristaltic pump to meet the filling work requirements of special scenarios such as sterile environments.

[0037] like Figure 1 and Figure 4 As shown, in this embodiment, the No. 1 transmission motor 23 and the No. 2 transmission motor 24 are both mounted and fixed on the motor mounting plate 22, and the motor mounting plate 22 is connected to the pump body seat 2 through the motor support plate 19, which not only improves the compactness of the overall structure of the peristaltic pump, but also ensures the installation stability of the drive assembly and the pump body assembly, and improves the stability of the peristaltic pump operation. Further, on the motor mounting plate 22, the tube pressing rocker 26 is connected to the origin limit block 25, and the top of the coupling 21 is provided with a tube pressing lower limit sleeve 20. Through the limiting effect of the origin limit block 25 and the tube pressing lower limit sleeve 20, the roller assembly is prevented from over-squeezing the hose 11 and the roller assembly is prevented from over-travelling in linear reciprocating motion, thereby achieving high-precision filling of the peristaltic pump and protecting the hose 11, so as to improve the service life of the hose 11.

[0038] like Figure 2 and Figure 3 As shown, in this embodiment, the roller assembly includes a roller mounting seat, a roller mounting shaft 6 and a roller 13. Four roller mounting shafts 6 are provided on the roller mounting seat, rollers 13 are provided at the ends of the roller mounting shafts 6, rollers 13 are provided on both sides of the hose 11, and the roller mounting shafts 6 are rotatably connected to the spline shaft 1. In one cycle of the roller assembly performing linear reciprocating motion, the second transmission motor 24 drives the spline shaft 1 to rotate, so as to drive the corresponding roller mounting shaft 6 to rotate, so as to realize that the corresponding roller 13 squeezes or releases the hose 11.

[0039] like Figure 2 As shown, in this embodiment, the roller mounting seat includes a mounting base 4, a mounting rear seat 5 and a mounting front seat 12, the mounting base 4 is fixed on the top of the pump body cover 3, and the mounting front seat 12 faces the side of the hose 11. The roller mounting shaft 6 includes a first roller mounting shaft 61, a second roller mounting shaft 62, a third roller mounting shaft 63 and a fourth roller mounting shaft 64 which are arranged in sequence, one end of the four roller mounting shafts is fixed on the mounting rear seat 5, and the other end passes through the mounting front seat 12, and the end of the first roller mounting shaft 61 is provided with a first roller 131, the end of the second roller mounting shaft 62 is provided with a second roller 132, the end of the third roller mounting shaft 63 is provided with a third roller 133, and the end of the fourth roller mounting shaft 64 is provided with a fourth roller 134. Among them, the first roller 131 and the second roller 132 are arranged as a group on the side of the hose 11, and the third roller 133 and the fourth roller 134 are arranged as a group on the side of the hose 11. In one cycle of the linear reciprocating motion of the roller assembly, the two groups of rollers squeeze the hose 11 in a preset order to achieve continuous filling of the peristaltic pump. In order to improve the flexibility of the roller, two deep groove bearings are respectively provided at both ends of the roller mounting shaft and the roller connection to ensure that the roller can rotate freely. When the roller clamps the hose and performs a linear lifting motion, the friction between the roller and the hose can be greatly eliminated, thereby achieving the purpose of protecting the hose and extending the service life of the hose.

[0040] Further, in this embodiment, the first roller mounting shaft 61, the second roller mounting shaft 62, the third roller mounting shaft 63 and the fourth roller mounting shaft 64 are all set as eccentric shafts. The top of the spline shaft 1 passes through the top of the pump cover 3 and the top of the mounting base 4 in sequence, and extends to the inside of the roller mounting seat. A rocker sleeve 31 is provided at the top of the spline shaft 1. Two cross links 32 are connected at both ends of the rocker sleeve 31 by pins. The cross links 32 are provided with joint bearings. The two cross links 32 are connected to the two adjustment rocker arms 33 by pins, respectively. The two adjustment rocker arms 33 are connected to the second roller mounting shaft 62 and the third roller mounting shaft 63 by bolts and pins, respectively, and finally the second roller mounting shaft 62 and the third roller mounting shaft 63 are connected to the spline shaft 1. In this embodiment, the first roller mounting shaft 61 and the second roller mounting shaft 62 are eccentric downward, and the third roller mounting shaft 63 and the fourth roller mounting shaft 64 are eccentric upward. The first roller mounting shaft 61 and the fourth roller mounting shaft 64 are connected by a connecting rod 30 and two adjusting swing rods 33, and the second roller mounting shaft 62 and the third roller mounting shaft 63 are connected by a connecting rod 30 and two adjusting swing rods 33. Two deep groove bearings are provided at both ends of the connecting rod 30, and the connecting rod 30 and the adjusting swing rod 33 are connected by pins. Furthermore, the connecting rod 30 connecting the first roller mounting shaft 61 and the fourth roller mounting shaft 64 is located at the upper part of the roller mounting shaft, and the connecting rod 30 connecting the second roller mounting shaft 62 and the third roller mounting shaft 63 is located at the lower part of the roller mounting shaft, which realizes the stable connection of the roller mounting shafts and saves the installation volume, making the structure of the roller mounting assembly more compact.

[0041] In this embodiment, the connection between the eccentric shafts with the same deflection direction is realized by the connecting rod 30, and the rotation connection between the eccentric shaft and the spline shaft 1 is realized by the swing arm sleeve 31, the cross connecting rod 32 and the adjusting swing arm 33, which not only improves the transmission stability between the spline shaft 1 and the eccentric shaft, but also realizes the synchronous rotation of multiple groups of eccentric shafts, driving the corresponding rollers to squeeze the hose in a preset order. The deflection angle of the eccentric shaft is accurately adjusted by adjusting the swing arm 33, the stability of the roller pressing the tube is improved, and the peristaltic pump can be continuously and accurately filled.

[0042] Working principle: When the servo motor with brake drives the reducer to move clockwise, the tube-pressing rocker 26 will drive the spline rocker sleeve 28 to move clockwise through the tube-pressing connecting rod 27, thereby causing the spline shaft 1 to move clockwise. The spline shaft 1 drives the rocker sleeve 31 to move clockwise, the rocker sleeve 31 drives the upper and lower cross connecting rods 32 to move to the left, and the cross connecting rod 32 drives the adjustment rocker 33 to move, thereby causing the third roller mounting shaft 63 to move counterclockwise and the second roller mounting shaft 62 to move clockwise. Because the first roller mounting shaft 61 and the third roller mounting shaft 63 are indirectly connected together through the connecting rod 30, and the second roller mounting shaft 62 and the fourth roller mounting shaft 64 are indirectly connected together through the connecting rod 30, when the third roller mounting shaft 63 moves counterclockwise, the first roller mounting shaft 61 also moves counterclockwise, while the second roller mounting shaft 62 and the fourth roller mounting shaft 64 move clockwise. The third roller mounting shaft 63 moves counterclockwise, and the fourth roller mounting shaft 64 moves clockwise, and the third roller 133 and the fourth roller 134 are in an open state, and the hose 11 between the two rollers is in a loose state; the first roller mounting shaft 61 moves counterclockwise, and the second roller mounting shaft 62 moves clockwise, and the first roller 131 and the second roller 132 are in a clamped state, and the hose 11 between the two rollers is in an extruded state. At this time, the No. 1 transmission motor 23 drives the pump body cover 3 to rise linearly through the ball screw 16, that is, drives the roller assembly to rise linearly. During this process, the first roller 131 and the second roller 132 are always in a state of squeezing the hose 11, that is, the hose is squeezed between the hose input end and the middle of the hose to achieve material filling, while the third roller 133 and the fourth roller 134 are in a state of loosening the hose 11. When the roller assembly rises to reach the target stroke, the servo motor with brake drives the reducer to move counterclockwise, so that the third roller 133 and the fourth roller 134 are in a state of clamping the hose 11, and the first roller 131 and the second roller 132 are in a state of loosening the hose 11. At this time, the No. 1 transmission motor 23 drives the pump cover 3 to descend linearly through the ball screw 16, that is, drives the roller assembly to descend linearly. During this process, the third roller 133 and the fourth roller 134 are always in a state of squeezing the hose 11, that is, the hose is squeezed between the middle of the hose and the output end of the hose to achieve material filling. When the roller assembly descends to reach the target stroke, the servo motor with brake drives the reducer to move clockwise, and the roller assembly starts a new round of tube pressing filling and linear reciprocating motion. The purpose of linear continuous canning can be achieved by cycling in sequence, which greatly improves the filling efficiency of the peristaltic pump.

[0043] It can be understood that in other embodiments, the first roller mounting shaft 61 and the fourth roller mounting shaft 64 can also be set as fixed shafts, and the second roller mounting shaft 62 and the third roller mounting shaft 63 can be set as eccentric shafts. The second roller mounting shaft 62 is connected to the third roller mounting shaft 63 by the connecting rod 30 and the adjusting rocker 33. During assembly, the deflection directions of the second roller mounting shaft 62 and the third roller mounting shaft 63 are ensured to be consistent, that is, the two eccentric shafts are deflected upward or downward at the same time. Specifically, when the second roller mounting shaft 62 deflects counterclockwise, the first roller 131 and the second roller 132 are in a clamped state, and the third roller 133 and the fourth roller 134 are in a loose state. When the second roller mounting shaft 62 deflects clockwise, the first roller 131 and the second roller 132 are in a loose state, and the third roller 133 and the fourth roller 134 are in a clamped state. In this way, the purpose of continuous filling of the peristaltic pump can also be achieved.

[0044] It can be understood that in other embodiments, the second roller mounting shaft 62 and the third roller mounting shaft 63 can also be set as fixed shafts, and the first roller mounting shaft 61 and the fourth roller mounting shaft 64 can be set as eccentric shafts. The first roller mounting shaft 61 and the fourth roller mounting shaft 64 are connected through the connecting rod 30 and the adjusting rocker 33. During assembly, the deflection directions of the first roller mounting shaft 61 and the fourth roller mounting shaft 64 are ensured to be consistent, which can also achieve the purpose of continuous filling of the peristaltic pump. By combining the fixed shaft with the eccentric shaft, the movement trajectory of the roller is reduced, which simplifies the power transmission between the spline shaft and the roller mounting shaft, improves the stability of the roller pressing tube, and helps to ensure the filling accuracy of the peristaltic pump, achieving high-precision filling.

[0045] It can be understood that in other embodiments, the middle of the roller mounting shaft 6 can also be mounted on the front mounting seat 12 and the rear mounting seat 5, rollers 13 are provided at both ends of the roller mounting shaft 6, and hoses 11 are installed on both sides of the roller mounting seat. That is, rollers are provided at both ends of the first roller mounting shaft 61, the second roller mounting shaft 62, the third roller mounting shaft 63 and the fourth roller mounting shaft 64, and within one cycle of the roller assembly performing linear reciprocating motion, two groups of hose extrusion filling are simultaneously realized, which greatly improves the filling efficiency of the peristaltic pump.

[0046] Example 2

[0047] like Figure 5As shown, the linear continuous filling peristaltic pump of the present invention has a substantially similar structure and working principle to the linear continuous filling peristaltic pump in Example 1, except that the roller mounting shaft 6 includes a first roller mounting shaft 61 and a second roller mounting shaft 62, and rollers are provided at both ends of the first roller mounting shaft 61 and the second roller mounting shaft 62, that is, the second roller 132 and the fourth roller 134 are provided at both ends of the first roller mounting shaft 61, and the first roller 131 and the third roller 133 are provided at both ends of the second roller mounting shaft 62. The first roller mounting shaft 61 and the second roller mounting shaft 62 are both eccentric shafts, and are connected to the spline shaft 1 through corresponding swing arm sleeves 31, cross links 32 and adjusting swing arms 33, respectively. During assembly, the deflection directions of the two ends of the same eccentric shaft are opposite, and when the first roller 131 and the second roller 132 are in a clamped state, the third roller 133 and the fourth roller 134 are in a loosened state.

[0048] In this embodiment, the setting direction of the hose support block 10 is parallel to the setting direction of the roller mounting shaft 6, and the hose support block 10 is set on the top of the roller mounting seat, the middle of the hose 11 spans the top of the roller mounting seat, and the two ends of the hose 11 are respectively inserted between the first roller 131 and the second roller 132, and between the third roller 133 and the fourth roller 134. When the roller assembly performs a linear upward movement, the first roller 131 and the second roller 132 are in a clamped state, and the hose 11 is squeezed along the hose input end to the middle of the hose, and the third roller 133 and the fourth roller 134 are in a loose state to achieve material metering and filling; when the roller assembly performs a linear downward movement, the third roller 133 and the fourth roller 134 are in a clamped state, and the hose 11 is squeezed along the hose middle to the hose output end, and the first roller 131 and the second roller 132 are in a loose state to achieve material metering and filling. In this reciprocating cycle, the peristaltic pump continuously fills the material.

[0049] In this embodiment, by setting tube pressing rollers at both ends of the roller mounting shaft and placing the hose across the roller mounting seat, the peristaltic pump can be continuously and accurately filled while effectively reducing the installation volume of the roller assembly and the hose assembly, thereby reducing the overall installation volume of the peristaltic pump to meet the filling requirements of equipment in a small working space. It is understood that in other embodiments, any one of the first roller mounting shaft 61 and the second roller mounting shaft 62 can be set as a fixed shaft, and the other can be set as an eccentric shaft, which can also achieve the purpose of continuous filling.

[0050] Example 3

[0051] like Figure 6As shown, a linear continuous filling peristaltic pump of the present invention has a structural arrangement and working principle that are substantially the same as those of the linear continuous filling peristaltic pump in Example 1, except that the roller mounting shaft 6 includes a first roller mounting shaft 61, a second roller mounting shaft 62, and a third roller mounting shaft 63, one end of the three roller mounting shafts being fixed to the mounting rear seat 5, and the other end passing through the mounting front seat 12, and provided with rollers. That is, a first roller 131 is provided at the end of the first roller mounting shaft 61, a second roller 132 is provided at the end of the second roller mounting shaft 62, and a third roller 133 is provided at the end of the third roller mounting shaft 63. The hose 11 passes between the first roller 131, the second roller 132, and the third roller 133.

[0052] In this embodiment, the first roller mounting shaft 61 and the third roller mounting shaft 63 are both eccentric shafts, and are respectively connected to the spline shaft 1 through the corresponding swing arm sleeve 31, the cross link 32 and the adjusting swing arm 33. At the same time, the first roller mounting shaft 61 and the third roller mounting shaft 63 are also connected through the connecting rod 30 and the adjusting swing arm 33. The first roller mounting shaft 61 and the third roller mounting shaft 63 have the same deflection direction. The second roller mounting shaft 62 is set as a fixed shaft. When the first roller mounting shaft 61 and the third roller mounting shaft 63 rotate, the first roller mounting shaft 61 approaches the second roller mounting shaft 62, and the third roller mounting shaft 63 moves away from the second roller mounting shaft 62. Accordingly, when the first roller 131 and the second roller 132 are in a clamped state, the third roller 133 and the second roller 132 are in a loosened state. On the contrary, when the first roller 131 and the second roller 132 are in a loose state, the third roller 133 and the second roller 132 are in a clamped state. In this way, the purpose of continuous filling of the peristaltic pump can be achieved. In this embodiment, by arranging an eccentric shaft and a fixed shaft in the three roller mounting shafts, the cooperation of the eccentric shaft and the fixed shaft is utilized to achieve continuous squeezing of the hose 11, and it is also beneficial to reduce the installation volume of the peristaltic pump.

[0053] It is understood that in other embodiments, the first roller mounting shaft 61 and the third roller mounting shaft 63 may be both set as fixed shafts, and the second roller mounting shaft 62 may be set as an eccentric shaft. With the deflection of the second roller mounting shaft 62, the second roller 132 and the first roller 131 or the third roller 133 perform pressure tube filling to achieve continuous filling by the peristaltic pump.

[0054] It can be understood that in other embodiments, the middle of the roller mounting shaft 6 can also be mounted on the front mounting seat 12 and the rear mounting seat 5, rollers 13 are provided at both ends of the roller mounting shaft 6, and hoses 11 are installed on both sides of the roller mounting seat. That is, rollers are provided at both ends of the first roller mounting shaft 61, the second roller mounting shaft 62, and the third roller mounting shaft 63, and within one cycle of the linear reciprocating motion of the roller assembly, two groups of hose extrusion filling are simultaneously realized, which greatly improves the filling efficiency of the peristaltic pump.

[0055] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed methods and technical contents to make many possible changes and modifications to the technical solutions of the present invention without departing from the spirit and technical solutions of the present invention, or modify them into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the scope of protection of the technical solutions of the present invention.

Claims

1. A linear continuous filling peristaltic pump, It is characterized in that include: A pump body assembly, a pipeline assembly, a pressure pipe assembly and a linear reciprocating motion assembly; the pipeline assembly comprises a hose (11) and a hose bracket assembly, the hose bracket assembly is arranged on the side of the pump body, the hose (11) is suspended at one end of the hose bracket assembly, the input end and the output end of the hose (11) are both fixed to the other end of the hose bracket assembly, and the suspension portion and the two ends of the hose (11) are arranged in a straight line; the linear reciprocating motion assembly and the pressure pipe assembly are both installed on the pump body assembly, and the linear reciprocating motion assembly is used to drive the pressure pipe assembly to perform linear reciprocating motion; within a cycle of reciprocating motion of the pressure pipe assembly, the pressure pipe assembly squeezes or releases the hose (11) along the hose (11) input end to the hose (11) suspension portion, and along the hose (11) suspension portion to the hose (11) output end, respectively, to achieve continuous filling and metering of materials; The hose support assembly comprises a mounting frame support (7), a mounting frame support block (8) and a mounting frame (9); the mounting frame support blocks (8) are parallel to each other at both ends of the mounting frame support (7); the ends of the mounting frame support blocks (8) are connected to the mounting frame (9); the mounting frames (9) are parallel to each other and are respectively provided with hose support blocks (10) and hose fixing members (14); the hose support blocks (10) are used to hang the middle part of the hose (11); and the hose fixing members (14) are used to fix the input end and the output end of the hose (11); The hose support block (10) is provided with a groove for fixing the hose (11), the middle part of the hose (11) is surrounded in the groove, and the hose (11) is installed between the two mounting frames (9) in an inverted U shape.

2. The linear continuous filling peristaltic pump according to claim 1, It is characterized in that The pump body assembly comprises a pump body seat (2) and a pump body cover (3); the linear reciprocating motion assembly comprises a No. 1 transmission motor (23), a coupling (21) and a screw assembly, wherein the No. 1 transmission motor (23) is connected to the screw assembly via the coupling (21), the screw assembly is inserted into the pump body seat (2), and the screw assembly is connected to the pump body cover (3), and under the drive of the No. 1 transmission motor (23), the screw assembly drives the pump body cover (3) to perform linear reciprocating motion.

3. The linear continuous filling peristaltic pump according to claim 2, It is characterized in that The tube pressing assembly comprises a No. 2 transmission motor (24), a ball spline shaft assembly and a roller assembly, wherein the roller assembly is arranged on the top of the pump body cover (3), one end of the ball spline shaft assembly is connected to the driving end of the No. 2 transmission motor (24), and the other end of the ball spline shaft assembly passes through the pump body seat (2) and the pump body cover (3) in sequence and is connected to the roller assembly. Under the drive of the No. 2 transmission motor (24), the ball spline shaft assembly drives the roller assembly to squeeze or release the hose (11).

4. The linear continuous filling peristaltic pump according to claim 3, It is characterized in that The roller assembly comprises a roller mounting seat, a roller mounting shaft (6) and a roller (13); the roller mounting seat is provided with a plurality of roller mounting shafts (6); the ends of the roller mounting shafts (6) are provided with rollers (13); rollers (13) are provided on both sides of the hose (11); the roller mounting shaft (6) is rotatably connected to the ball spline shaft assembly; within a cycle of linear reciprocating motion of the roller assembly, the second transmission motor (24) drives the ball spline shaft assembly to rotate, thereby driving the corresponding roller mounting shaft (6) to rotate, so that the corresponding roller (13) squeezes or releases the hose (11).

5. The linear continuous filling peristaltic pump according to claim 4, It is characterized in that The plurality of roller mounting shafts (6) include an eccentric shaft and a fixed shaft, wherein the eccentric shaft is rotatably connected to the ball spline shaft assembly; within a cycle of linear reciprocating motion of the roller assembly, the second transmission motor (24) drives the ball spline shaft assembly to rotate, so as to drive the eccentric shaft to approach or move away from an adjacent fixed shaft, so that the corresponding roller (13) sequentially squeezes or releases the hose (11) from the hose (11) input end to the hose (11) hanging portion, and from the hose (11) hanging portion to the hose (11) output end.

6. The linear continuous filling peristaltic pump according to claim 4, It is characterized in that The plurality of roller mounting shafts (6) are all eccentric shafts, and the eccentric shafts are rotatably connected to the ball spline shaft assembly. During a cycle of linear reciprocating motion of the roller assembly, the second transmission motor (24) drives the ball spline shaft assembly to rotate, so as to drive adjacent eccentric shafts to move closer to or farther from each other, so that the corresponding rollers (13) can squeeze or loosen the hose (11) in sequence from the hose (11) input end to the hose (11) hanging part, and from the hose (11) hanging part to the hose (11) output end.

7. The linear continuous filling peristaltic pump according to claim 5 or 6, It is characterized in that The roller assembly further comprises a connecting rod (30), wherein the connecting rod (30) is used to connect eccentric shafts having the same deflection direction.

8. The linear continuous filling peristaltic pump according to claim 7, It is characterized in that The roller assembly further comprises a rocker sleeve (31), a cross connecting rod (32) and an adjusting rocker rod (33); the ball spline shaft assembly, the rocker sleeve (31), the cross connecting rod (32), the adjusting rocker rod (33) and the eccentric shaft are connected in sequence, so as to enable the ball spline shaft assembly to drive the eccentric shaft to rotate.

9. The linear continuous filling peristaltic pump according to claim 5 or 6, It is characterized in that The middle portion of the roller mounting shaft (6) is mounted on a roller mounting seat, and rollers (13) are provided at both ends of the roller mounting shaft (6).

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