Peristaltic pump

Abstract

The utility model discloses a peristaltic pump which comprises a driving assembly, a rack supporting assembly and a pump head, the pump head is arranged on one side of the rack supporting assembly, a roller assembly is arranged in the pump head, an elastic piece is arranged between the roller assembly and the pump head, and the driving assembly is arranged on the other side of the rack supporting assembly and used for driving the roller assembly. According to the utility model, the superimposed use of the peristaltic pumps can be realized, the volume is small, the special space is small, the installation space occupied by the filling machine can be effectively reduced, and the stable and high-precision liquid medicine conveying can be realized while the overall cost of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of peristaltic pumps, and more specifically, to a peristaltic pump. Background Art

[0002] A peristaltic pump is a new type of fluid transfer pump following rotor pumps, centrifugal pumps, diaphragm pumps, etc. A peristaltic pump is like squeezing a hose filled with fluid with fingers. As the fingers slide forward, negative pressure is formed inside the tube, and the fluid inside the tube moves forward. Compared with ordinary fluid transfer pumps, peristaltic pumps have the characteristics that the fluid is isolated in the pump tube, the pump tube can be quickly replaced, and the maintenance cost is low. It is being widely promoted and applied in industries such as medical treatment and medicine.

[0003] Currently, the peristaltic pump applied to a multi-pump filling machine is overall too large, relatively bulky, inconvenient to disassemble and assemble, and the filling accuracy is not high. Chinese Patent CN219492544U discloses a stacked peristaltic pump that is easy to replace the pump tube. However, there is still the problem that the pump head jitters, resulting in easy damage to the pump tube. Summary of the Utility Model

[0004] Aiming at the defects in the prior art that the peristaltic pump for a multi-pump filling machine is overall too large, inconvenient to disassemble and assemble, has low filling accuracy, and the pump tube in the stacked peristaltic pump is easily damaged, the utility model provides a peristaltic pump.

[0005] To solve the above technical problems, the utility model proposes a peristaltic pump including: a drive assembly, a frame support assembly, and a pump head. The pump head is arranged on one side of the frame support assembly, and it includes a roller assembly inside. An elastic member is arranged between the roller assembly and the pump head. The drive assembly is arranged on the other side of the frame support assembly for driving the roller assembly.

[0006] Further, the drive assembly includes a servo motor. The servo motor is connected to a mounting seat, and the top of the mounting seat is fixedly connected to a table board.

[0007] Further, the servo motor includes a first servo motor and a second servo motor. The output end of the first servo motor is rotationally connected to the frame support assembly through a coupling, and the output end of the second servo motor is rotationally connected to the frame support assembly through a set of bevel gears.

[0008] Further, the frame support assembly includes a bearing seat. The bearing seat is fixedly connected to the top of the table board. An outer transmission shaft and an inner transmission shaft are sequentially sleeved inside the bearing seat. First bearings are arranged at both ends of the outer transmission shaft. The inner ring of the first bearing is connected to the outer transmission shaft, and its outer ring is connected to the bevel gear or the pump head. Second bearings are arranged at both ends of the inner transmission shaft. The inner ring of the second bearing is connected to the inner transmission shaft, and its outer ring is connected to the coupling or the pump head.

[0009] Further, the roller assembly includes a lower pump head roller assembly and an upper pump head roller assembly.

[0010] Further, the pump head includes a lower base, an intermediate base, and a top cover arranged in sequence from bottom to top. The bottom of the lower base is fixedly connected to the top of the bearing seat. The lower base and the intermediate base are provided with a lower pump head roller assembly, which is rotationally connected to the lower base and the intermediate base through a third bearing. A transmission block is fixedly connected to the bottom of the lower base, and it is floatingly fixedly connected to the outer transmission shaft through the transmission block. An upper pump head roller assembly is arranged between the intermediate base and the top cover, which is rotationally connected to the intermediate base and the top cover through a fourth bearing. The upper pump head roller assembly is rotationally connected to the inner transmission shaft through an upper transmission shaft. The upper end of the upper transmission shaft is fixedly connected to the upper pump head roller assembly, and its lower end is floatingly fixedly connected to the inner transmission shaft.

[0011] Further, side plates are fixedly connected between the lower base and the intermediate base, and between the intermediate base and the top cover. The side plates are arranged around the lower pump head roller assembly or the upper pump head roller assembly.

[0012] Further, a pump cover assembly is also arranged between the lower base and the intermediate base, and between the intermediate base and the top cover.

[0013] Further, the elastic members are arranged between the top of the lower pump tube rolling assembly and the third bearing, and between the top cover and the top of the upper pump head roller assembly.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] The present utility model can realize the superimposed use of peristaltic pumps, with a small volume and less dedicated space, which can effectively reduce the installation space occupied by the filling machine, reduce the overall cost of the equipment, and achieve stable and high-precision liquid medicine delivery. In addition, the use of elastic members can prevent the pump head from jumping during the infusion process and improve the service life of the pump tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The features and advantages of the present utility model will be more clearly understood by referring to the accompanying drawings. The drawings are schematic and should not be construed as limiting the present utility model in any way. In the drawings:

[0017] Figure 1 is a schematic structural diagram of a superimposed peristaltic pump disclosed in a preferred embodiment of the present utility model;

[0018] Figure 2 is a top view structural diagram of a superimposed peristaltic pump disclosed in a preferred embodiment of the present utility model;

[0019] Figure 3 is a vertical sectional structural diagram of a superimposed peristaltic pump disclosed in a preferred embodiment of the present utility model;

[0020] Figure 4 Yes Figure 3 Schematic enlarged view of the structure at position A in

[0021] Figure 5 Yes Figure 3 Schematic enlarged view of the structure at position B in

[0022] Explanation of reference numerals in the drawings:

[0023] 1. Driving component; 1001. Mounting base; 1002. Table board; 1003. First servo motor; 1004. Second servo motor; 1005. Coupling; 1006. Main helical gear; 1007. Sub-helical gear;

[0024] 2. Frame support component; 2001. Bearing seat; 2002. Outer transmission shaft; 2003. Inner transmission shaft; 2004. First bearing; 2005. Second bearing;

[0025] 3. Pump head; 3001. Lower base; 3002. Intermediate base; 3003. Top cover; 3004. Lower pump head roller assembly; 3005. Third bearing; 3006. Transmission block; 3007. Upper pump head roller assembly; 3008. Fourth bearing; 3009. Upper transmission shaft; 3010. Elastic member; 3011. Side plate; 3012. Pump cover assembly. Detailed implementation manners

[0026] To make the above objects, features and advantages of the present utility model more apparent and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementations disclosed below.

[0027] An embodiment of the present utility model discloses a peristaltic pump, as Figures 1-5 shown, the peristaltic pump includes the following structures:

[0028] A peristaltic pump includes a driving component 1, a frame support component 2 and a pump head 3. The pump head 3 is fixedly connected to one side of the frame support component 2 and includes a roller assembly disposed therein. An elastic member 3010 is disposed between the roller assembly and the pump head 3. The driving component 1 is fixedly connected to the other side of the frame support component 2, and its output end drives the roller assembly in the pump head 3 to rotate through the support component 2.

[0029] In some specific embodiments, such as Figure 2 and Figure 4As shown, the drive assembly 1 includes a servo motor, the servo motor is connected to the mounting base 1001, and the top of the mounting base 1001 is fixedly connected to the platen 1002. The platen 1002 has a through hole, and the mounting base 1001 is fixedly connected below the through hole. The servo motor includes a first servo motor 1003 and a second servo motor 1004. The output end of the first servo motor 1003 is rotationally connected to the inner transmission shaft 2003 inside the frame support assembly 2 through a coupling 1005. The second servo motor 1004 is arranged on one side of the first servo motor 1003, and its output end is rotationally connected to the outer transmission shaft 2002 inside the frame support assembly 2 through a secondary bevel gear 1007 meshing with the main bevel gear 1006.

[0030] In some specific embodiments, as Figure 5 shown, the frame support assembly 2 includes a bearing block 2001 which has a through cavity. The bearing block 2001 is fixedly connected to the top of the platen 1002. The cavity is communicated with the through hole. An outer transmission shaft 2002 and an inner transmission shaft 2003 are sequentially sleeved inside the cavity of the bearing block 2001 from outside to inside. First bearings 2004 are arranged at both ends of the outer transmission shaft 2002. The inner ring of the first bearing 2004 is connected to the outer transmission shaft 2002, and its outer ring is connected to the bevel gear or the pump head 3 to transmit the rotational power of the second servo motor 1004 to the lower pump head roller assembly 3004. Second bearings 2005 are arranged at both ends of the inner transmission shaft 2003. The inner ring of the second bearing 2005 is connected to the inner transmission shaft 2003, and its outer ring is connected to the coupling 1005 or the pump head 3 to transmit the rotational power of the first servo motor 1003 to the upper pump head roller assembly 3007.

[0031] In some specific embodiments, as Figure 4 shown, the roller assembly includes a lower pump head roller assembly 3004 and an upper pump head roller assembly 3007.

[0032] In some specific embodiments, as Figure 4 and Figure 5As shown, the pump head 3 includes a lower base 3001, an intermediate base 3002, and a top cover 3003 arranged in sequence from bottom to top. The bottom of the lower base 3001 is fixedly connected to the top of the bearing seat 2001. The lower base 3001 and the intermediate base 3002 are provided with a lower pump head roller assembly 3004, which is rotatably connected to the lower base 3001 and the intermediate base 3002 through a third bearing 3005. The outer ring of the third bearing 3005 is fixedly connected to the lower base 3001 and the intermediate base 3002, and its outer ring is rotatably connected to the lower pump head roller assembly 3004. A transmission block 3006 is fixedly connected to the top of the lower base 3001, and it is floatingly fixedly connected to the outer transmission shaft 2002 through the transmission block 3006 to transmit the rotational power of the second servo motor 1004 to control the rotation of the lower pump head roller assembly 3004. An upper pump head roller assembly 3007 is arranged between the intermediate base 3002 and the top cover 3003, which is rotatably connected to the intermediate base 3002 and the top cover 3003 through a fourth bearing 3008. The outer ring of the fourth bearing 3008 is fixedly connected to the intermediate base 3002 and the top cover 3003, and its outer ring is rotatably connected to the lower pump head roller assembly 3007. The upper pump head roller assembly 3007 is rotatably connected to the inner transmission shaft 2003 through an upper transmission shaft 3009. The upper end of the upper transmission shaft 3009 is fixedly connected to the upper pump head roller assembly 3007, and its lower end is floatingly fixedly connected to the inner transmission shaft 2003. The rotational power of the first servo motor 1003 is transmitted to control the rotation of the upper pump head roller assembly 3007.

[0033] In some specific embodiments, as Figure 4 shown, the elastic member 3010 can be an O-ring washer, which is arranged between the top of the lower pump head roller assembly 3004 and the third bearing 3005, and between the top cover 3003 and the top of the upper pump head roller assembly 3007. The elastic member 3010 can effectively prevent the pump head 3 from bouncing up and down during operation and enhance its stability.

[0034] In some specific embodiments, as Figure 1 and Figure 4 shown, side plates 3011 are fixedly connected between the lower base 3001 and the intermediate base 3002, and between the intermediate base 3002 and the top cover 3003. The side plates 3011 are arranged around the lower pump head roller assembly 3004 or the upper pump head roller assembly 3007. This structure ensures the coaxial stability of the transmission of the lower pump head roller assembly 3004 and the upper pump head roller assembly 3007.

[0035] In some specific embodiments, as Figure 2 and Figure 4As shown, a pump cover assembly 3012 is also provided between the lower base 3001 and the middle base 3002, and between the middle base 3002 and the top cover 3003. The pump cover assembly 3012 forms a fixed gap with the lower pump head roller assembly 3004 and the upper pump head roller assembly 3007, ensuring high-precision delivery of the liquid medicine in the pump tube under the rolling of the lower pump head roller assembly 3004 and the upper pump head roller assembly 3007.

[0036] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations fall within the scope defined by the appended claims.

Claims

1. A peristaltic pump, characterized in that: include: A drive assembly (1), a frame support assembly (2) and a pump head (3), wherein the pump head (3) is arranged on one side of the frame support assembly (2) and comprises a roller assembly arranged inside, an elastic member (3010) is arranged between the roller assembly and the pump head (3), and the drive assembly (1) is arranged on the other side of the frame support assembly (2) and is used to drive the roller assembly.

2. The peristaltic pump according to claim 1, characterized in that: The driving assembly (1) comprises a servo motor, the servo motor is connected to a mounting seat (1001), and the top of the mounting seat (1001) is fixedly connected to a table plate (1002).

3. The peristaltic pump according to claim 2, characterized in that: The servo motor comprises a first servo motor (1003) and a second servo motor (1004); the output end of the first servo motor (1003) is rotationally connected to the frame support assembly (2) via a coupling (1005); and the output end of the second servo motor (1004) is rotationally connected to the frame support assembly (2) via a set of bevel gears.

4. The peristaltic pump according to claim 1, characterized in that: The frame support assembly (2) comprises a bearing seat (2001), wherein the bearing seat (2001) is fixedly connected to the top of the table (1002), and an outer transmission shaft (2002) and an inner transmission shaft (2003) are sequentially sleeved in the bearing seat (2001), and first bearings (2004) are arranged at both ends of the outer transmission shaft (2002), and the inner ring of the first bearing (2004) is connected to the outer transmission shaft (2002), and the outer ring thereof is connected to the bevel gear or the pump head (3), and second bearings (2005) are arranged at both ends of the inner transmission shaft (2003), and the inner ring of the second bearing (2005) is connected to the inner transmission shaft (2003), and the outer ring thereof is connected to the coupling (1005) or the pump head (3).

5. The peristaltic pump according to claim 1, characterized in that: The roller assembly includes a lower pump head roller assembly (3004) and an upper pump head roller assembly (3007).

6. The peristaltic pump according to claim 1, characterized in that: The pump head (3) comprises a lower base (3001), an intermediate base (3002) and a top cover (3003) which are arranged in sequence from bottom to top. The bottom of the lower base (3001) is fixedly connected to the top of the bearing seat (2001). The lower base (3001) and the intermediate base (3002) are provided with a lower pump head roller assembly (3004), which is rotatably connected to the lower base (3001) and the intermediate base (3002) via a third bearing (3005). The bottom of the lower base (3001) is fixedly connected to a transmission block (3006), which is connected to the lower base (3001) via the transmission block (300 6) is floatingly fixedly connected to the outer transmission shaft (2002); an upper pump head roller assembly (3007) is arranged between the intermediate base (3002) and the top cover (3003), which is rotatably connected to the intermediate base (3002) and the top cover (3003) through a fourth bearing (3008); the upper pump head roller assembly (3007) is rotatably connected to the inner transmission shaft (2003) through an upper transmission shaft (3009); the upper end of the upper transmission shaft (3009) is fixedly connected to the upper pump head roller assembly (3007), and the lower end thereof is floatingly fixedly connected to the inner transmission shaft (2003).

7. The peristaltic pump according to claim 6, characterized in that: A side plate (3011) is fixedly connected between the lower base (3001) and the middle base (3002), and between the middle base (3002) and the top cover (3003), and the side plate (3011) is arranged around the lower pump head roller assembly (3004) or the upper pump head roller assembly (3007).

8. The peristaltic pump according to claim 7, characterized in that: A pump cover assembly (3012) is also provided between the lower base (3001) and the middle base (3002), and between the middle base (3002) and the top cover (3003).

9. The peristaltic pump according to claim 1, characterized in that: The elastic member (3010) is arranged between the top of the lower pump head roller assembly (3004) and the third bearing (3005), and between the top cover (3003) and the top of the upper pump head roller assembly (3007).

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