A linear moving tube peristaltic pump

Abstract

The present invention discloses a linear moving tube peristaltic pump, comprising: a pump body assembly, a pipeline assembly, a cut-off assembly, a pressure tube assembly and at least one group of linear reciprocating motion assemblies; the cut-off assembly is used to clamp and release the pipeline assembly; the linear reciprocating motion assembly and the pressure tube assembly are both installed on the pump body assembly; the pipeline assembly is connected to the linear reciprocating motion assembly, and as the linear reciprocating motion assembly reciprocates, the pipeline assembly follows the reciprocating motion; the pressure tube assembly squeezes the reciprocating pipeline assembly, thereby completing the pumping and metering of the material. The linear moving tube peristaltic pump of the present invention has the advantages of simple structure, long service life of the elastic hose, high filling efficiency, stable metering accuracy, etc.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of fluid filling pumps, and in particular to a linear dynamic tube 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 order to meet the high requirements of fluid filling in terms of accuracy and stability, the pump tube needs to be continuously squeezed by rollers during the operation of the peristaltic pump, just like squeezing a hose with two fingers. The roller squeezes the hose and rotates, forming positive and negative pressure chambers in the hose, and the liquid flows out. In the process of continuous squeezing of the hose by the roller, the pipeline is severely deformed and worn, resulting in a short service life of the hose; and the deformation of the hose also makes it difficult for the accuracy and stability of the peristaltic pump to meet production requirements. In addition, because the hose is not completely fixed in the pump body, it is easy to drive the hose to move out of position when the roller rotates, resulting in accuracy errors. The above problems have caused the accuracy and stability of the existing peristaltic pumps to be low, which has limited 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 dynamic tube peristaltic pump with a simple structure, a long service life of an elastic hose, high filling efficiency and stable metering accuracy.

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

[0005] A linear moving tube peristaltic pump comprises: a pump body assembly, a pipeline assembly, a shut-off assembly, a pressure tube assembly and at least one group of linear reciprocating motion assemblies; the shut-off assembly is used to clamp and release the pipeline assembly; the linear reciprocating motion assembly and the pressure tube assembly are both installed on the pump body assembly; the pipeline assembly is connected to the linear reciprocating motion assembly, and as the linear reciprocating motion assembly reciprocates, the pipeline assembly follows the reciprocating motion; the pressure tube assembly squeezes the reciprocating pipeline assembly, thereby completing the pumping and metering of the material.

[0006] As a further improvement of the present invention, the pressing tube assembly includes a roller assembly, the roller assembly includes a movable roller and a fixed roller which are arranged opposite to each other; the fixed roller is fixed on a mounting plate, and the movable roller is installed on the opposite side of the fixed roller through an eccentric rocker rod; the pipeline assembly includes an elastic hose and a pipe joint, the pipe joint is arranged at both ends of the elastic hose; the elastic hose passes between the movable roller and the fixed roller.

[0007] As a further improvement of the present invention, the tube pressing assembly also includes a second driving power component, which is fixed on the mounting plate; the eccentric rocker arm is connected to the output end of the second driving power component, and rotates under the drive of the second driving power component to drive the movable roller to approach or move away from the fixed roller.

[0008] As a further improvement of the present invention, the pump body assembly includes a table, a fixed pump body plate and a movable pump body plate; the fixed pump body plate is fixed on the table, and the movable pump body plate is sleeved on the outside of the fixed pump body plate and reciprocates along the outside of the fixed pump body plate.

[0009] As a further improvement of the present invention, a bracket is provided on the side of the movable pump body plate, and both ends of the elastic hose are respectively connected to the bracket through pipe joints.

[0010] As a further improvement of the present invention, the linear reciprocating motion assembly includes a first driving power component, a first guide shaft and a lead screw; one end of the lead screw is connected to the output end of the first driving power component through a coupling, and the other end of the lead screw is connected to the table; one end of the first guide shaft is connected to the lead screw through a lead screw nut, and the other end of the first guide shaft passes through the table and the fixed pump body plate in sequence, and is connected to the movable pump body plate.

[0011] As a further improvement of the present invention, the pump body assembly includes a pump body baffle; the linear reciprocating motion assembly includes a first driving power component and a screw; one end of the screw is connected to the output end of the first driving power component through a coupling, and the other end of the screw is connected to the pump body baffle.

[0012] As a further improvement of the present invention, a screw nut is provided on the screw, and as the screw rotates, the screw nut reciprocates on the screw; and a pipe joint clamp is provided on the screw nut.

[0013] As a further improvement of the present invention, both ends of the pump body baffle are respectively fixed to the second guide shaft, and the setting direction of the second guide shaft is parallel to the setting direction of the screw; the pipe joint clamp is passed through the second guide shaft and reciprocates along the second guide shaft.

[0014] As a further improvement of the present invention, the pump body baffle and the linear reciprocating motion assembly are symmetrically arranged in two groups, and the operating conditions of the two groups of linear reciprocating motion assemblies are completely opposite; the pipe joints at both ends of the elastic hose are respectively connected to the pipe joint clamps on the two groups of linear reciprocating motion assemblies.

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] 1. The linear moving tube peristaltic pump of the present invention has the advantages of compact structure and simple principle by installing both the linear reciprocating motion component and the tube pressing component on the pump body component; connecting the pipeline component to the linear reciprocating motion component, and the pipeline component reciprocates with the movement of the linear reciprocating motion component. During operation, the tube pressing component squeezes the reciprocating pipeline component to complete the pumping and metering of the material. Compared with the existing roller tube pressing transmission, the present invention adopts a filling method in which the tube pressing component is relatively fixed and the pipeline component reciprocates, which avoids the misalignment of the hose when the roller rotates. In addition, the cooperation of the interception component effectively improves the accuracy and stability of the peristaltic pump.

[0017] 2. The linear moving tube peristaltic pump of the present invention uses a roller assembly to compress the tube, and the roller assembly includes a movable roller and a fixed roller that are relatively arranged. The movable roller is driven by the second driving power component to approach or move away from the fixed roller, so that the reciprocating elastic hose can be squeezed or loosened, thereby reducing the friction loss of the roller assembly to the elastic hose, increasing the service life of the elastic hose, and reducing the operating cost of the peristaltic pump.

[0018] 3. The linear moving tube peristaltic pump of the present invention symmetrically arranges two groups of linear reciprocating motion components with completely opposite operating states, and the two ends of the elastic hose are respectively connected to the two groups of linear reciprocating motion components. Driven by the linear reciprocating motion components, the elastic hose travels back and forth between the movable roller and the fixed roller to achieve material transportation, which ensures the efficient operation of the peristaltic pump and effectively reduces the overall installation height of the pump body assembly, so that the peristaltic pump can be better used in work environments with limited space height such as sterilization cabinets or isolation rooms.

[0019] 4. The linear moving tube peristaltic pump of the present invention installs the elastic hose on the pump body assembly through a pipe joint, which has the advantages of easy disassembly and assembly and complete visualization of the tube compression pumping process; when filling different types of materials or changing the filling volume, only the elastic hose needs to be replaced, avoiding cross contamination between different materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the structural principle of the linear moving tube peristaltic pump in Example 1 of the present invention.

[0021] Figure 2 for Figure 1 Schematic diagram of the structural principle of the compression tube assembly shown in A.

[0022] Figure 3 Schematic diagram of the structural principle of the linear moving tube peristaltic pump in Example 2 of the present invention.

[0023] Figure 4 for Figure 3Schematic diagram of the structural principle of the compression tube assembly shown in the B direction.

[0024] Figure 5 Schematic diagram of the structural principle of the linear moving tube peristaltic pump in Example 3 of the present invention.

[0025] Legend:

[0026] 1. First driving power component; 2. Coupling; 3. Bearing; 4. Screw nut; 5. First guide shaft; 6. Screw; 7. Table; 8. Fixed pump body plate; 9. Movable pump body plate; 10. Bracket; 11. Elastic hose; 12. Pipe joint; 13. Second driving power component; 14. Movable roller; 15. Eccentric swing arm; 16. Pipe joint clamp; 17. Second guide shaft; 18. Fixed roller; 19. Mounting plate; 20. Pump body baffle. DETAILED DESCRIPTION

[0027] 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.

[0028] Example 1

[0029] like Figure 1 and Figure 2 As shown, a linear moving tube peristaltic pump of the present invention comprises: a pump body assembly, a pipeline assembly, a shut-off assembly, a pressure tube assembly and at least one group of linear reciprocating motion assemblies; the shut-off assembly is used to clamp and release the pipeline assembly; the linear reciprocating motion assembly and the pressure tube assembly are both installed on the pump body assembly; the pipeline assembly is connected to the linear reciprocating motion assembly, and as the linear reciprocating motion assembly reciprocates, the pipeline assembly follows the reciprocating motion; the pressure tube assembly squeezes the reciprocating pipeline assembly, thereby completing the pumping and metering of the material.

[0030] In this embodiment, both the linear reciprocating motion component and the pipe pressing component are installed on the pump body component; the pipeline component is connected to the linear reciprocating motion component, and the pipeline component reciprocates with the movement of the linear reciprocating motion component, which has the advantages of compact structure and simple principle. During operation, the pipe pressing component squeezes the reciprocating pipeline component to complete the pumping and metering of the material. Compared with the existing roller pipe pressing transmission, the present invention adopts a filling method in which the pipe pressing component is relatively fixed and the pipeline component reciprocates, which avoids the misalignment of the hose when the roller rotates. In addition, the cooperation of the interception component effectively improves the accuracy and stability of the peristaltic pump.

[0031] Figure 1 Schematic diagram of the structure principle of the linear moving tube peristaltic pump in this embodiment. Figure 2 Then Figure 1 The structural principle diagram of the compression tube assembly shown in A in the figure. Figure 1 and Figure 2 As shown, in this embodiment, the pressing tube assembly includes a roller assembly, which includes a movable roller 14 and a fixed roller 18 which are arranged opposite to each other; the fixed roller 18 is fixed on a mounting plate 19, and the movable roller 14 is installed on the opposite side of the fixed roller 18 through an eccentric swing rod 15. The pipeline assembly includes an elastic hose 11 and a pipe joint 12, and the pipe joint 12 is arranged at both ends of the elastic hose 11; the elastic hose 11 passes between the movable roller 14 and the fixed roller 18.

[0032] It should be noted that, in this embodiment, one end of the elastic hose 11 extends out of the pump assembly for material input, and the other end of the elastic hose 11 passes through the pump assembly to output the material; the roller assembly squeezes the reciprocating elastic hose 11, so that the material is sucked into the tube from one end of the elastic hose 11 and then flows out from the other end of the elastic hose 11. A cut-off assembly (not shown in the figure) is correspondingly provided at the outlet port where the elastic hose 11 passes through the pump assembly, and the cut-off assembly cooperates with the elastic hose 11 to prevent the material from flowing back, thereby realizing the precise transportation of the material. It can be understood that, according to actual needs, the cut-off assembly can specifically be a one-way valve, a pinch valve, a solenoid valve, or an on-off valve, but is not limited to the on-off valve and the above-mentioned valve group.

[0033] Furthermore, in this embodiment, the tube pressing assembly further includes a second driving power component 13, which is fixed on the mounting plate 19; the eccentric swing rod 15 is connected to the output end of the second driving power component 13, and rotates under the drive of the second driving power component 13 to drive the movable roller 14 to approach or move away from the fixed roller 18. Specifically, under the drive of the second driving power component 13, the eccentric swing rod 15 drives the movable roller 14 to approach or move away from the fixed roller 18 to squeeze or release the elastic hose 11. Figure 1 As shown, one end of the mounting plate 19 is fixedly connected to the table 7, and the setting direction of the mounting plate 19 is consistent with the fixed pump body plate 8 and the movable pump body plate 9, ensuring that the movable roller 14 and the fixed roller 18 can better realize hose extrusion.

[0034] In this embodiment, by using a roller assembly to press the tube, and the roller assembly includes a movable roller 14 and a fixed roller 18 that are relatively arranged, the second driving power component 13 drives the movable roller 14 to approach or move away from the fixed roller 18, so that the reciprocating elastic hose 11 can be squeezed or loosened, reducing the friction loss of the roller assembly on the elastic hose 11, increasing the service life of the elastic hose 11, and reducing the operating cost of the peristaltic pump. In addition, in this embodiment, the working state of the elastic hose 11 is controlled by the fixed roller 18 and the movable roller 14, so that the whole machine is not provided with a fixed cover plate, so that the elastic hose 11 is in a completely exposed state, and the whole machine has the advantages of convenient sanitation and cleaning and convenient component replacement. It can be understood that the second driving power component 13 can specifically be a power motor. In other embodiments, the second driving power component 13 can also be other power sources.

[0035] like Figure 1 As shown, in this embodiment, the pump body assembly includes a table 7, a fixed pump body plate 8 and a movable pump body plate 9; the fixed pump body plate 8 is fixed on the table 7, and the movable pump body plate 9 is sleeved on the outside of the fixed pump body plate 8 and reciprocates along the outside of the fixed pump body plate 8. Further, a bracket 10 is provided on the side of the movable pump body plate 9, and both ends of the elastic hose 11 are connected to the bracket 10 through pipe joints 12 respectively. Specifically, the pressure pipe assembly is arranged on the inner side of the bracket 10 through the mounting plate 19, that is, the bracket 10 and the pressure pipe assembly are located on the same side of the elastic hose 11. Under the cooperation of the bracket 10 and the pipe joints 12 at both ends of the elastic hose 11, the main working section of the elastic hose 11 is in a straightened state. The elastic hose 11 is installed on the pump body assembly through the pipe joint 12, which has the advantages of easy disassembly and assembly, and the pressure pipe pumping process is fully visualized; when filling different types of materials or changing the filling volume, only the elastic hose 11 and the pipe joint 12 need to be replaced, thereby avoiding cross contamination between different materials.

[0036] In this embodiment, as the movable pump body plate 9 reciprocates along the outer side of the fixed pump body plate 8, the elastic hose 11 connected to the bracket 10 also reciprocates and passes between the movable roller 14 and the fixed roller 18, while the installation position of the roller assembly on the pump body is relatively fixed, that is, a filling method in which the roller assembly is relatively fixed and the pipeline assembly reciprocates is realized, which avoids the elastic hose 11 being dragged and moved out of position during the reciprocating movement of the roller assembly, thereby ensuring the metering accuracy and stability of the peristaltic pump.

[0037] like Figure 1As shown, in this embodiment, the linear reciprocating motion assembly includes a first driving power component 1, a first guide shaft 5 and a screw 6; one end of the screw 6 is connected to the output end of the first driving power component 1 through a coupling 2, and the other end of the screw 6 is connected to a table plate 7; one end of the first guide shaft 5 is connected to the screw 6 through a screw nut 4, and the other end of the first guide shaft 5 passes through the table plate 7 and the fixed pump body plate 8 in sequence, and is connected to the movable pump body plate 9.

[0038] Specifically, a bearing 3 is also provided between the lead screw 6 and the coupling 2, and a bearing is also provided at the connection between the lead screw 6 and the table 7. Through the function of the bearing, the transmission stability of the lead screw 6 is improved. The lead screw nut 4 is inserted into the lead screw 6, and reciprocates with the forward and reverse rotation of the lead screw 6. The first guide shaft 5 connected to the lead screw nut 4 also reciprocates with the lead screw nut 4. The end of the first guide shaft 5 away from the lead screw nut 4 passes through the table 7 and the fixed pump body plate 8 in sequence, and is finally connected to the movable pump body plate 9. Driven by the first driving power component 1, the lead screw 6 rotates forward and reverse. In the process of the lead screw nut 4 reciprocating along the lead screw 6, the first guide shaft 5 drives the movable pump body plate 9 to reciprocate along the outer side of the fixed pump body plate 8, and the bracket 10 also reciprocates with the movable pump body plate 9, and finally realizes the reciprocating motion of the elastic hose 11. The movable pump body plate 9 is sleeved on the outside of the fixed pump body plate 8, and the first guide shaft 5 passes through the fixed pump body plate 8 and is connected to the movable pump body plate 9. On the one hand, the overall installation height of the peristaltic pump can be reduced. On the other hand, the first guide shaft 5 and the movable pump body plate 9 can be assisted and limited by the fixed pump body plate 8 to avoid the first guide shaft 5 and the movable pump body plate 9 from being offset during the reciprocating motion and affecting the metering accuracy of the peristaltic pump.

[0039] It is understood that the first driving power component 1 can be a power motor, and the present embodiment adopts a drive transmission mode of a motor plus a lead screw. In other embodiments, the reciprocating motion of the elastic hose 11 can also be achieved by a motor-driven rack and pinion or a pneumatic cylinder-driven mode.

[0040] During operation, first, driven by the second driving power component 13, the movable roller 14 approaches the fixed roller 18 to squeeze the elastic hose 11. Under the squeezing of the movable roller 14 and the fixed roller 18, the inner wall of the elastic hose 11 is completely fitted, and the inner cavity of the elastic hose 11 is divided into two completely independent cavities with the clamping point of the roller assembly on the elastic hose 11 as the boundary. Subsequently, driven by the first driving power component 1, the lead screw 6 rotates forward, the lead screw nut 4 moves forward along the lead screw 6, and drives the movable pump body plate 9 to move forward along the outer side of the fixed pump body plate 8 through the first guide shaft 5, and the bracket 10 on the movable pump body plate 9 drives the elastic hose 11 to move forward together, and the space size of the two independent cavities in the elastic hose 11 also changes accordingly, and a positive and negative pressure cavity is formed. The inner cavity space of the elastic hose 11 squeezed by the roller assembly becomes smaller, the fluid pressure in the tube cavity increases, and the material in the positive pressure cavity is discharged from the outlet end of the elastic hose 11 to achieve material transportation. After the elastic hose 11 moves forward along with the movable pump body plate 9 and passes through the clamping point of the roller assembly on the elastic hose 11, the elastic hose 11 relies on its own elastic recovery to increase the space in the tube cavity and form a negative pressure, sucking the material into the tube cavity. When the screw 6 rotates forward to a preset distance or reaches a preset filling volume, the interception assembly at the outlet end of the elastic hose 11 clamps the elastic hose 11 to prevent the material from flowing back; the second driving power component 13 drives the movable roller 14 away from the fixed roller 18 to loosen the elastic hose 11; the first driving power component 1 drives the screw 6 to rotate in the opposite direction, the screw nut 4 moves in the opposite direction along the screw 6, the first guide shaft 5 drives the movable pump body plate 9 to move in the opposite direction, and the elastic hose 11 moves in the opposite direction along with the movable pump body plate 9 to the starting position, waiting for the next round of metering pumping operation. In this reciprocating cycle, intermittent material delivery can be achieved.

[0041] Example 2

[0042] like Figure 3 and Figure 4 As shown, the linear moving tube peristaltic pump of the present invention has a substantially similar structure and working principle to the linear moving tube peristaltic pump in Example 1, with the difference that the tube pressing assembly is disposed on the outside of the bracket 10 through the mounting plate 19, that is, the bracket 10 and the tube pressing assembly are located on different sides of the elastic hose 11. In this embodiment, by disposing the bracket 10 and the tube pressing assembly on different sides of the elastic hose 11, the installation volume of the bracket 10 is reduced, and the lateral distance between the bracket 10 and the elastic hose 11 is also shortened, which is beneficial to improving the transmission stability between the bracket 10 and the elastic hose 11, and is also beneficial to reducing the overall installation volume of the peristaltic pump.

[0043] Example 3

[0044] like Figure 5As shown, a linear moving tube peristaltic pump of the present invention has a structural arrangement and working principle that are substantially the same as those of the linear moving tube peristaltic pump in Example 1, except that: the pump body assembly includes a pump body baffle 20; the linear reciprocating motion assembly includes a first driving power component 1 and a lead screw 6; one end of the lead screw 6 is connected to the output end of the first driving power component 1 through a coupling 2, and the other end of the lead screw 6 is connected to the pump body baffle 20. A lead screw nut 4 is provided on the lead screw 6, and as the lead screw 6 rotates, the lead screw nut 4 reciprocates on the lead screw 6; a pipe joint clamp 16 is provided on the lead screw nut 4.

[0045] Furthermore, a bearing is provided at the connection between the lead screw 6 and the pump body baffle 20, and the auxiliary function of the bearing is used to improve the transmission stability of the lead screw 6. The pipe joint clamping plate 16 is fixedly installed on the outside of the lead screw nut 4 by bolts, and as the lead screw nut 4 reciprocates on the lead screw 6, the pipe joint clamping plate 16 fixedly connected to the lead screw nut 4 also reciprocates.

[0046] In this embodiment, both ends of the pump body baffle 20 are respectively fixed to the second guide shaft 17, and the setting direction of the second guide shaft 17 is parallel to the setting direction of the lead screw 6; the pipe joint clamping plate 16 is passed through the second guide shaft 17 and reciprocates along the second guide shaft 17. By setting the lead screw 6 and the second guide shaft 17 in parallel on the pump body baffle 20, and also passing the pipe joint clamping plate 16 on the lead screw nut 4 on the second guide shaft 17, the operation stability of the pipe joint clamping plate 16 is improved through the dual guidance of the lead screw 6 and the second guide shaft 17, and the metering accuracy stability of the peristaltic pump is also improved.

[0047] In this embodiment, the pump body baffle 20 and the linear reciprocating motion assembly are symmetrically arranged in two groups, and the operating states of the two groups of linear reciprocating motion assemblies are completely opposite; the pipe joints 12 at both ends of the elastic hose 11 are respectively connected to the pipe joint clamps 16 on the two groups of linear reciprocating motion assemblies. By symmetrically arranging two groups of linear reciprocating motion assemblies with completely opposite operating states, and connecting the two ends of the elastic hose 11 to the two groups of linear reciprocating motion assemblies, the elastic hose 11 travels back and forth between the movable roller 14 and the fixed roller 18 under the drive of the linear reciprocating motion assembly to realize material transportation, ensure the efficient operation of the peristaltic pump, and effectively reduce the overall installation height of the pump body assembly, so that the peristaltic pump can be better used in work places with limited space height such as sterilization cabinets or isolation rooms.

[0048] It can be understood that the first driving power component 1 can be a power motor. In this embodiment, a driving transmission method of dual motors plus lead screws is adopted. In other embodiments, a transmission method of motor-driven gear racks can also be adopted, such as a driving transmission method of a single motor, a single gear, and a double rack. A dual cylinder driving method can also be adopted to achieve the reciprocating motion of the elastic hose 11. As long as the driving transmission method can achieve the reciprocating motion of the elastic hose 11, it should be within the protection scope of the present invention.

[0049] During operation, first, under the drive of the second driving power component 13, the movable roller 14 approaches the fixed roller 18 to squeeze the elastic hose 11. Under the squeeze of the movable roller 14 and the fixed roller 18, the inner wall of the elastic hose 11 is completely fitted, and the inner cavity of the elastic hose 11 is divided into two completely independent cavities with the clamping point of the roller assembly on the elastic hose 11 as the boundary. Subsequently, on the peristaltic pump (a) side, under the drive of the first driving power component 1, the lead screw 6 rotates forward, the lead screw nut 4 moves forward along the lead screw 6, and the pipe joint clamp 16 on the lead screw nut 4 drives the elastic hose 11 to move forward together, and the space size of the two independent cavities in the elastic hose 11 also changes accordingly, and a positive and negative pressure cavity is formed. At the same time, on the peristaltic pump (b) side, under the drive of the first driving power component 1, the lead screw 6 rotates in the opposite direction, the lead screw nut 4 moves in the opposite direction along the lead screw 6, and the pipe joint clamp 16 on the lead screw nut 4 drives the elastic hose 11 to move in the opposite direction together. Driven by the linear reciprocating motion components on the (a) and (b) sides of the peristaltic pump, the elastic hose 11 passes between the movable roller 14 and the fixed roller 18. The inner cavity space of the elastic hose 11 squeezed by the roller assembly becomes smaller, the fluid pressure in the lumen increases, and the material in the positive pressure cavity is discharged from the outlet end of the elastic hose 11, realizing material transportation. After the elastic hose 11 moves and passes the clamping point of the roller assembly on the elastic hose 11, the elastic hose 11 relies on its own elastic recovery to increase the inner cavity space and form negative pressure, sucking the material into the lumen. When the lead screw 6 on the (a) side of the peristaltic pump rotates forward to a preset distance or reaches a preset filling volume, the interception assembly at the outlet end of the elastic hose 11 clamps the elastic hose 11 to prevent material backflow; the second driving power component 13 drives the movable roller 14 away from the fixed roller 18 to loosen the elastic hose 11; on the (a) side of the peristaltic pump, the first driving power component 1 drives the lead screw 6 to rotate in the opposite direction, the lead screw nut 4 moves in the opposite direction along the lead screw 6, and the lead screw nut 4 drives the flexible pipe joint clamp 16 to move in the opposite direction; on the (b) side of the peristaltic pump, the first driving power component 1 drives the lead screw 6 to rotate forward, the lead screw nut 4 moves forward along the lead screw 6, and the lead screw nut 4 drives the flexible pipe joint clamp 16 to move forward, and driven by the linear reciprocating motion components on the (a) side and (b) side of the peristaltic pump, the elastic hose 11 moves to the starting position and waits for the next round of metering pumping operation. In this reciprocating cycle, intermittent material delivery can be achieved.

[0050] In order to better describe the operation process of the peristaltic pump in this embodiment, Figure 5 The pump body baffle 20 and the linear reciprocating motion assembly symmetrically arranged are respectively marked as the peristaltic pump (a) side and the peristaltic pump (b) side. Figure 5 The second driving power component 13, the eccentric swing rod 15 and the mounting plate 19 are omitted. It can be understood that the above-mentioned marks or component omissions do not impose any limitation on the peristaltic pump in this embodiment.

[0051] 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 moving tube peristaltic pump, characterized in that: include: A pump body assembly, a pipeline assembly, a shutoff assembly, a pressure pipe assembly and at least one set of linear reciprocating motion assemblies; the shutoff assembly is used to clamp and release the pipeline assembly; the linear reciprocating motion assembly and the pressure pipe assembly are both installed on the pump body assembly; the pipeline assembly is connected to the linear reciprocating motion assembly, and as the linear reciprocating motion assembly reciprocates, the pipeline assembly follows the reciprocating motion; the pressure pipe assembly squeezes the reciprocating pipeline assembly, thereby completing the pumping and metering of the material; The pressing tube assembly comprises a roller assembly, wherein the roller assembly comprises a movable roller (14) and a fixed roller (18) which are arranged opposite to each other; the fixed roller (18) is fixedly mounted on a mounting plate (19), and the movable roller (14) is mounted on the opposite side of the fixed roller (18) via an eccentric swing rod (15); the pipeline assembly comprises an elastic hose (11) and a pipe joint (12), wherein the pipe joint (12) is arranged at both ends of the elastic hose (11); the elastic hose (11) passes between the movable roller (14) and the fixed roller (18); The shut-off component is a one-way valve, a pinch valve or a solenoid valve.

2. The linear moving tube peristaltic pump according to claim 1, characterized in that: The tube pressing assembly further comprises a second driving power component (13), wherein the second driving power component (13) is fixedly mounted on the mounting plate (19); the eccentric swing rod (15) is connected to an output end of the second driving power component (13), and is driven by the second driving power component (13) to rotate so as to drive the movable roller (14) to move closer to or farther from the fixed roller (18).

3. The linear moving tube peristaltic pump according to claim 1 or 2, characterized in that: The pump body assembly comprises a table plate (7), a fixed pump body plate (8) and a movable pump body plate (9); the fixed pump body plate (8) is fixedly mounted on the table plate (7), and the movable pump body plate (9) is sleeved on the outside of the fixed pump body plate (8) and reciprocates along the outside of the fixed pump body plate (8).

4. The linear moving tube peristaltic pump according to claim 3, characterized in that: A bracket (10) is provided on the side of the movable pump body plate (9), and both ends of the elastic hose (11) are connected to the bracket (10) via pipe joints (12) respectively.

5. The linear moving tube peristaltic pump according to claim 4, characterized in that: The linear reciprocating motion assembly comprises a first driving power component (1), a first guide shaft (5) and a lead screw (6); one end of the lead screw (6) is connected to the output end of the first driving power component (1) via a coupling (2), and the other end of the lead screw (6) is connected to a table (7); one end of the first guide shaft (5) is connected to the lead screw (6) via a lead screw nut (4), and the other end of the first guide shaft (5) passes through the table (7) and the fixed pump body plate (8) in sequence, and is connected to the movable pump body plate (9).

6. The linear moving tube peristaltic pump according to claim 1 or 2, characterized in that: The pump body assembly comprises a pump body baffle (20); the linear reciprocating motion assembly comprises a first driving power component (1) and a lead screw (6); one end of the lead screw (6) is connected to the output end of the first driving power component (1) via a coupling (2), and the other end of the lead screw (6) is connected to the pump body baffle (20).

7. The linear moving tube peristaltic pump according to claim 6, characterized in that: A lead screw nut (4) is provided on the lead screw (6); as the lead screw (6) rotates, the lead screw nut (4) reciprocates on the lead screw (6); and a pipe joint clamping plate (16) is provided on the lead screw nut (4).

8. The linear moving tube peristaltic pump according to claim 7, characterized in that: Both ends of the pump body baffle (20) are respectively fixedly connected to the second guide shaft (17); the second guide shaft (17) is arranged in a direction parallel to the direction of the lead screw (6); the pipe joint clamping plate (16) is passed through the second guide shaft (17) and reciprocates along the second guide shaft (17).

9. The linear moving tube peristaltic pump according to claim 7 or 8, characterized in that: The pump body baffle (20) and the linear reciprocating motion assembly are symmetrically arranged in two groups, and the operating states of the two groups of linear reciprocating motion assemblies are completely opposite; the pipe joints (12) at both ends of the elastic hose (11) are respectively connected to the pipe joint clamping plates (16) on the two groups of linear reciprocating motion assemblies.

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