Peristaltic pump

Abstract

The utility model relates to the technical field of pump valves, and provides a peristaltic pump which comprises a pump shell, a driving mechanism, a pump head and a peristaltic pipe. An inner gear ring is arranged on the inner side of the pump shell; the driving mechanism comprises a driving motor, a driving gear and a connecting seat; the driving motor is arranged at one end of the pump shell, a power output shaft of the driving motor extends into the pump shell, one end of the driving gear is connected with the power output shaft of the driving motor, and the other end of the driving gear is connected with the connecting seat; the pump head comprises a roller and a transmission gear; the rolling wheel and the transmission gear are coaxially arranged on the connecting base, the axis of the rolling wheel is parallel to the axis of the driving gear, and the transmission gear is rotationally connected to the connecting base and meshed with the inner gear ring and the driving gear at the same time. And the peristaltic pipe is positioned between the pump shell and the roller and is extruded by the roller. Therefore, the working efficiency of the peristaltic pump can be improved.

Description

Technical Field

[0001] The present application relates to the field of pumps and valves, and in particular to a peristaltic pump. Background Art

[0002] Peristaltic pump is a new type of industrial pump, widely used in pharmaceutical, food, chemical and other industries. It can transport some media that are sensitive, viscous, highly corrosive, abrasive, have high purity requirements, and contain certain granular materials.

[0003] In the related art, a peristaltic pump includes a driving mechanism, a pump head and a peristaltic tube. The driving mechanism drives the pump head to work, and the pump head squeezes and releases the peristaltic tube alternately, so that the liquid is forcibly squeezed and flows along the peristaltic tube.

[0004] Among them, the existing peristaltic pump consumes large amounts of energy and current during use, resulting in low working efficiency of the peristaltic pump, and therefore needs to be improved. Utility Model Content

[0005] In order to improve the working efficiency of the peristaltic pump, the present application provides a peristaltic pump.

[0006] A peristaltic pump provided in this application adopts the following technical solution:

[0007] A peristaltic pump comprises a pump casing, a driving mechanism, a pump head and a peristaltic tube; an inner gear ring is provided on the inner side of the pump casing; the driving mechanism comprises a driving motor, a driving gear and a connecting seat; the driving motor is arranged at one end of the pump casing, a power output shaft of the driving motor extends into the pump casing and is coaxially arranged with the inner gear ring, one end of the driving gear is connected with the power output shaft of the driving motor, and the other end is connected with the connecting seat; the pump head comprises a roller and a transmission gear; the roller and the transmission gear are coaxially arranged on the connecting seat and the axis of the roller is arranged parallel to the axis of the driving gear, the transmission gear is rotatably connected to the connecting seat and is meshed with the inner gear ring and the driving gear at the same time; the peristaltic tube is arranged in the pump casing, the peristaltic tube is located between the pump casing and the roller and is squeezed by the roller.

[0008] By adopting the above technical solution, the driving motor drives the driving gear to rotate, and the driving gear drives the connecting seat to rotate synchronously, so that the roller rotates along the circumferential direction of the driving gear, and the peristaltic tube is squeezed by the roller, so that the roller alternately squeezes and releases the peristaltic tube to realize the liquid transportation. Under the meshing action of the driving gear and the inner gear ring, the transmission gear makes the roller rotate along the circumferential direction of the transmission gear stably and accurately, thereby improving the liquid transportation effect; wherein, the power output shaft of the driving motor and the driving gear are located in the same straight line, that is, the driving shaft system of the driving mechanism is located in the same straight line, and the roller and the transmission gear are located in the same straight line, that is, the transmission shaft system of the pump head is located in the same straight line, and the driving shaft system is parallel to the transmission shaft system, which can reduce the installation error between the components, thereby improving the transmission efficiency, reducing the energy consumption of the peristaltic pump, and further improving the working efficiency of the peristaltic pump.

[0009] Preferably, the driving mechanism further comprises a connecting shaft, the connecting shaft is arranged on the connecting seat, and the roller and the transmission gear are rotatably connected to the connecting shaft.

[0010] By adopting the above technical solution, a connecting shaft is set to realize the coaxial installation of the roller and the transmission gear on the connecting seat, and the roller is rotatably connected to the connecting shaft to ensure that the roller can smoothly squeeze different positions of the peristaltic tube under the drive of the connecting seat, so that the liquid delivery is more continuous and uniform.

[0011] Preferably, the number of the rollers is three, and the three rollers are evenly spaced along the circumference of the connecting seat.

[0012] By adopting the above technical solution and setting the number of rollers to three, the liquid conveying efficiency is improved.

[0013] Preferably, the pump housing includes a base, an upper cover and a plurality of clips, the inner gear ring and the drive motor are arranged on the base, and the upper cover is connected to the base through the plurality of clips.

[0014] By adopting the above technical solution, by providing a base, an upper cover and a plurality of buckles, the overall installation of the peristaltic pump is facilitated, thereby improving the assembly efficiency of the peristaltic pump.

[0015] Preferably, the peristaltic pump also includes a water outlet nozzle, which includes a nozzle body, a stopper plate and an elastic member, the water inlet end of the nozzle body is connected to the water outlet end of the peristaltic tube, the stopper plate and the elastic member are arranged in the nozzle body, and the elastic member drives the stopper plate to block the water inlet end of the nozzle body so as to isolate the water inlet end of the nozzle body from the water outlet end of the nozzle body.

[0016] By adopting the above technical solution, when the peristaltic pump stops working, the elastic part drives the stop plate to block the water inlet end of the nozzle body. At this time, the liquid at the water outlet end of the nozzle body cannot flow back to the water inlet end of the nozzle body, that is, the liquid cannot flow back to the water outlet end of the peristaltic tube, thereby minimizing the backflow of the water outlet end of the peristaltic tube.

[0017] Preferably, the nozzle body comprises a water inlet head and a water outlet head, the water outlet head is detachably connected to the water inlet head, and the flow stop plate and the elastic member are arranged between the water inlet head and the water outlet head.

[0018] By adopting the above technical solution, by providing a water inlet head and a water outlet head, since the water outlet head is detachably connected to the water inlet head, the stop plate or the elastic member can be replaced by disassembling the water outlet head.

[0019] Preferably, the water outlet head is threadedly connected to the water inlet head.

[0020] By adopting the above technical solution, the water outlet head is threadedly connected to the water inlet head, which is simple and convenient to operate, thereby facilitating the installation and disassembly of the water outlet head.

[0021] Preferably, the peripheral side of the water inlet head is clamped to the pump housing, and one end of the water inlet head is plugged into the water outlet end of the peristaltic tube.

[0022] By adopting the above technical solution, the water inlet head is clamped on the pump housing so that the water outlet nozzle is installed on the pump housing, and one end of the water inlet head is inserted into the peristaltic tube to realize the installation of the nozzle body on the peristaltic tube, so that the water inlet end of the nozzle body and the water outlet end of the peristaltic tube are connected more stably.

[0023] Preferably, the end of the water inlet head close to the peristaltic tube is arranged in a truncated cone shape and the end close to the peristaltic tube has a smaller diameter.

[0024] By adopting the above technical solution, the end of the water inlet head close to the peristaltic tube is truncated into a cone shape, so that the water inlet tube can be inserted into the peristaltic tube and the stability of the water inlet head installed on the peristaltic tube is improved.

[0025] Preferably, the water outlet nozzle further comprises a sealing ring, and the sealing ring is arranged at an end of the flow stop plate away from the elastic member.

[0026] By adopting the above technical solution and providing a sealing ring, the stability of the stop plate sealing the water inlet end of the nozzle body can be improved.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The power output shaft of the driving motor and the driving gear are located in the same straight line, that is, the driving shaft system of the driving mechanism is located in the same straight line, and the roller and the transmission gear are located in the same straight line, that is, the transmission shaft system of the pump head is located in the same straight line, and the driving shaft system is parallel to the transmission shaft system, which can reduce the installation error between the components, thereby improving the transmission efficiency, reducing the energy consumption of the peristaltic pump, and then improving the working efficiency of the peristaltic pump;

[0029] 2. By setting a connecting shaft, the roller and the transmission gear are coaxially installed on the connecting seat, and the roller is rotatably connected to the connecting shaft to ensure that the roller can smoothly squeeze different positions of the peristaltic tube under the drive of the connecting seat, so that the liquid can be transported more continuously and evenly;

[0030] 3. When the peristaltic pump stops working, the elastic part drives the stopper to block the water inlet end of the nozzle body. At this time, the liquid at the water outlet end of the nozzle body cannot flow back to the water inlet end of the nozzle body, that is, the liquid cannot flow back to the water outlet end of the peristaltic tube, thereby minimizing the backflow of the water outlet end of the peristaltic tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the overall structure of the peristaltic pump in the embodiment of the present application;

[0032] Figure 2 Schematic diagram of the overall explosion of the peristaltic pump in the embodiment of the present application;

[0033] Figure 3 It is a partial structural schematic diagram of a peristaltic pump in an embodiment of the present application;

[0034] Figure 4 It is a schematic diagram of the overall structure of the water outlet nozzle in the embodiment of the present application.

[0035] Figure numerals: 1. Pump casing; 11. Base; 12. Upper cover; 13. Inner gear ring; 14. Buckle; 2. Driving mechanism; 21. Driving motor; 22. Driving gear; 23. Connecting seat; 24. Connecting shaft; 3. Pump head; 31. Roller; 32. Transmission gear; 4. Peristaltic tube; 5. Water outlet nozzle; 51. Nozzle body; 511. Water inlet head; 512. Water outlet head; 52. Stop plate; 53. Elastic member; 54. Sealing ring; 6. Water inlet nozzle. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-4 This application is described in further detail.

[0037] The embodiment of the present application discloses a peristaltic pump.

[0038] Reference Figure 1 and Figure 2The peristaltic pump includes a pump housing 1, a driving mechanism 2, a pump head 3 and a peristaltic tube 4. The pump housing 1 includes a base 11 and an upper cover 12. The upper cover 12 is installed on the upper end of the base 11 so that the interior of the pump housing 1 is hollow, and the inner side of the base 11 is integrally connected with an inner gear ring 13.

[0039] Reference Figure 2 and Figure 3 The driving mechanism 2 includes a driving motor 21, a driving gear 22 and a connecting seat 23. The driving motor 21 is fixedly connected to the lower end of the base 11 and the power output shaft extends into the base 11. At the same time, the power output shaft of the driving motor 21 is coaxially arranged with the inner gear ring 13. The lower end of the driving gear 22 is fixedly connected to the power output shaft of the driving motor 21, and the connecting seat 23 is fixedly connected to the upper end of the driving gear 22.

[0040] The pump head 3 includes a roller 31 and a transmission gear 32. The roller 31 is arranged on the lower side of the connecting seat 23. The axis of the roller 31 is arranged parallel to the axis of the driving gear 22. The transmission gear 32 is rotatably connected to the connecting seat 23. The transmission gear 32 is located at the lower end of the roller 31 and is coaxially arranged with the roller 31.

[0041] The peristaltic tube 4 is disposed in the upper cover 12 and is generally arranged in a “U” shape, wherein the peristaltic tube 4 is located between the inner side wall of the upper cover 12 and the roller 31 and is squeezed by the roller 31 .

[0042] In actual applications, the driving motor 21 drives the driving gear 22 to rotate, and the driving gear 22 drives the connecting seat 23 to rotate synchronously, so that the roller 31 rotates along the circumferential direction of the driving gear 22, and the peristaltic tube 4 is squeezed by the roller 31, so that the roller 31 alternately squeezes and releases the peristaltic tube 4 to achieve liquid transportation. Since the transmission gear 32 is meshed with the driving gear 22 and the inner ring 13 at the same time, the transmission gear 32 and the roller 31 rotate synchronously along the circumferential direction of the driving gear 22, so that the roller 31 rotates stably and accurately along the circumferential direction of the transmission gear 32, thereby improving the liquid transportation effect.

[0043] It should be noted that the power output shaft of the driving motor 21 and the driving gear 22 are located in the same straight line, that is, the driving shaft system of the driving mechanism 2 is located in the same straight line. At the same time, the roller 31 and the transmission gear 32 are located in the same straight line, that is, the transmission shaft system of the pump head 3 is located in the same straight line, and the driving shaft system is parallel to the transmission shaft system, which can reduce the installation error between the components, thereby improving the transmission efficiency, reducing the energy consumption of the peristaltic pump, and further improving the working efficiency of the peristaltic pump.

[0044] In some embodiments, the driving mechanism 2 further comprises a connecting shaft 24, the connecting shaft 24 is fixedly connected to the connecting seat 23, and the roller 31 and the transmission gear 32 are arranged on the connecting shaft 24, so that the roller 31 and the transmission gear 32 are coaxially installed on the connecting seat 23, and the structure is simple and easy to install. At the same time, the roller 31 is rotatably connected to the connecting shaft 24 to ensure that the roller 31 is driven by the connecting seat 23 to smoothly squeeze different positions of the peristaltic tube 4, so that the liquid is transported more continuously and evenly.

[0045] In some embodiments, there are three rollers 31, which are evenly spaced along the circumference of the connecting seat 23. Correspondingly, there are also three connecting shafts 24 and transmission gears 32 to improve the liquid delivery efficiency, thereby efficiently delivering the liquid.

[0046] Reference Figure 1 and Figure 2 In some embodiments, the pump housing 1 further includes a plurality of buckles 14, the upper cover 12 is covered on the upper end of the base 11, and the plurality of buckles 14 are simultaneously snapped to the outer sides of the upper cover 12 and the base 11 to realize the assembly of the pump housing 1. During the installation of the peristaltic pump, after the components of the driving mechanism 2 and the pump head 3 are installed on the base 11, the upper cover 12 is installed on the base 11 using the plurality of buckles 14 to realize the installation of the peristaltic pump, which is simple and convenient to operate, thereby improving the assembly efficiency of the peristaltic pump.

[0047] Reference Figure 2 and Figure 4 In some embodiments, the peristaltic pump further comprises a water outlet nozzle 5, the water outlet nozzle 5 comprises a nozzle body 51, a stopper 52 and an elastic member 53, the two ends of the nozzle body 51 are respectively a water inlet end and a water outlet end, the water inlet end of the nozzle body 51 is connected with the water outlet end of the nozzle body 51, and the water inlet end of the nozzle body 51 is connected with the water outlet end of the peristaltic tube 4. The stopper 52 and the elastic member 53 are arranged in the nozzle body 51, in this embodiment, the elastic member 53 is a spring, and in other embodiments, it can also be a hollow elastic column, one end of the elastic member 53 elastically abuts against one end of the stopper 52, and the other end elastically abuts against the nozzle body 51, and the elastic member 53 drives the stopper 52 to abut against the water inlet end of the nozzle body 51 to block the water inlet end of the nozzle body 51, so that the water inlet end of the nozzle body 51 is isolated from the water outlet end of the nozzle body 51.

[0048] When the peristaltic pump stops working, the elastic member 53 drives the stop plate 52 to reset, so that the stop plate 52 blocks the water inlet end of the nozzle body 51. At this time, the liquid at the water outlet end of the nozzle body 51 cannot flow back to the water inlet end of the nozzle body 51, and therefore the liquid cannot flow back to the water outlet end of the peristaltic tube 4, thereby avoiding backflow at the water outlet end of the peristaltic tube 4 as much as possible, thereby improving the use effect of the peristaltic pump.

[0049] In some embodiments, the nozzle body 51 includes an inlet head 511 and an outlet head 512, the inlet end of the nozzle body 51 is arranged at the inlet head 511, the outlet end of the nozzle body 51 is arranged in the outlet head 512, the outlet head 512 is detachably connected to the end of the inlet head 511 away from the peristaltic tube 4, and the stopper 52 and the elastic member 53 are placed in the inlet head 511, and the end of the elastic member 53 away from the stopper 52 elastically abuts against the outlet head 512. After the peristaltic pump is used for a long time, the stopper 52 and the elastic member 53 are easily damaged. By disassembling the outlet head 512, the stopper 52 or the elastic member 53 can be replaced or maintained to improve the service life of the water outlet nozzle 5.

[0050] In some embodiments, the water outlet head 512 is threadedly connected to the outer peripheral side of the water inlet head 511, and the water outlet head 512 can be installed and removed by rotating the water outlet head 512, which has a simple structure and is easy to operate. In addition, when assembling the water outlet 5, the stopper 52 and the elastic member 53 are placed in the water inlet head 511, and then the water inlet head 511 is threadedly connected, thereby facilitating the assembly of the water outlet 5.

[0051] In some embodiments, a slot (not marked in the figure) is formed between the base 11 and the upper seat, and the peripheral side of the water inlet head 511 protrudes to form a ring and is snapped into the slot, so that the water outlet nozzle 5 is installed on the pump housing 1, and the end of the water inlet head 511 away from the water outlet head 512 is inserted into the water outlet end of the peristaltic tube 4, so that the nozzle body 51 is installed on the peristaltic tube 4, thereby improving the stability of the connection between the water inlet end of the nozzle body 51 and the water outlet end of the peristaltic tube 4. It should be noted that the peristaltic pump also includes a water inlet nozzle 6, the number of the slots is two, the water inlet nozzle 6 is also snapped into the slot, and the water inlet nozzle 6 is inserted into the water inlet end of the peristaltic tube 4 to achieve the fixation of the peristaltic tube 4.

[0052] Reference Figure 4 In some embodiments, the end of the water inlet head 511 close to the peristaltic tube 4 is truncated in a cone shape, and the diameter of the end close to the peristaltic tube 4 is smaller, so that the water inlet head 511 can be plugged into the peristaltic tube 4, and the end with a larger diameter is pressed against the inner wall of the peristaltic tube 4, thereby improving the stability of the water inlet head 511 installed on the peristaltic tube 4.

[0053] In some embodiments, the water outlet 5 also includes a sealing ring 54, which is fixedly connected to one end of the stop plate 52 away from the elastic member 53 to improve the sealing ability of the stop plate 52 on the water inlet end of the nozzle body 51, thereby improving the stability of the stop plate 52 in sealing the water inlet end of the nozzle body 51.

[0054] The implementation principle of this embodiment is as follows: in actual application, the driving motor 21 drives the driving gear 22 to rotate, and the driving gear 22 drives the connecting seat 23 to rotate synchronously, so that the roller 31 rotates along the circumferential direction of the driving gear 22, and the peristaltic tube 4 is squeezed by the roller 31, so that the roller 31 alternately squeezes and releases the peristaltic tube 4 to achieve liquid transportation. Since the transmission gear 32 is meshed with the driving gear 22 and the inner gear ring 13 at the same time, the transmission gear 32 and the roller 31 rotate synchronously along the circumferential direction of the driving gear 22, so that the roller 31 rotates along the circumferential direction of the transmission gear 32 stably and accurately, thereby improving the liquid transportation effect.

[0055] It should be noted that the power output shaft of the driving motor 21 and the driving gear 22 are located in the same straight line, that is, the driving shaft system of the driving mechanism 2 is located in the same straight line. At the same time, the roller 31 and the transmission gear 32 are located in the same straight line, that is, the transmission shaft system of the pump head 3 is located in the same straight line, and the driving shaft system is parallel to the transmission shaft system, which can reduce the installation error between the components, thereby improving the transmission efficiency, reducing the energy consumption of the peristaltic pump, and further improving the working efficiency of the peristaltic pump.

[0056] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A peristaltic pump, characterized in that: The invention comprises a pump housing (1), a driving mechanism (2), a pump head (3) and a peristaltic tube (4); an inner gear ring (13) is provided on the inner side of the pump housing (1); the driving mechanism (2) comprises a driving motor (21), a driving gear (22) and a connecting seat (23); the driving motor (21) is arranged at one end of the pump housing (1); a power output shaft of the driving motor (21) extends into the pump housing (1) and is coaxially arranged with the inner gear ring (13); one end of the driving gear (22) is connected to the power output shaft of the driving motor (21), and the other end is connected to the connecting seat (23); the pump head (3) comprises a driving gear (22) and a connecting seat (23); The pump comprises at least one roller (31) and transmission gears (32) arranged in a number corresponding to the number of the rollers (31); the roller (31) and the transmission gear (32) are coaxially arranged on the connecting seat (23), and the axis of the roller (31) is arranged parallel to the axis of the driving gear (22); the transmission gear (32) is rotatably connected to the connecting seat (23) and simultaneously meshes with the inner gear ring (13) and the driving gear (22); the peristaltic tube (4) is arranged in the pump housing (1), and the peristaltic tube (4) is located between the pump housing (1) and the roller (31) and is squeezed by the roller (31).

2. A peristaltic pump according to claim 1, characterized in that: The driving mechanism (2) further comprises a connecting shaft (24), wherein the connecting shaft (24) is disposed on the connecting seat (23), and the roller (31) and the transmission gear (32) are rotatably connected to the connecting shaft (24).

3. A peristaltic pump according to claim 1, characterized in that: The number of the rollers (31) is three, and the three rollers (31) are evenly spaced along the circumference of the connecting seat (23).

4. A peristaltic pump according to claim 1, characterized in that: The pump housing (1) comprises a base (11), an upper cover (12) and a plurality of buckles (14); the inner gear ring (13) and the drive motor (21) are arranged on the base (11), and the upper cover (12) is connected to the base (11) via the plurality of buckles (14).

5. A peristaltic pump according to claim 1, characterized in that: The peristaltic pump further comprises a water outlet nozzle (5), the water outlet nozzle (5) comprising a nozzle body (51), a stopper plate (52) and an elastic member (53); a water inlet end of the nozzle body (51) is connected to a water outlet end of the peristaltic tube (4); the stopper plate (52) and the elastic member (53) are arranged in the nozzle body (51), and the elastic member (53) drives the stopper plate (52) to block the water inlet end of the nozzle body (51), so that the water inlet end of the nozzle body (51) is isolated from the water outlet end of the nozzle body (51).

6. A peristaltic pump according to claim 5, characterized in that: The nozzle body (51) comprises a water inlet head (511) and a water outlet head (512); the water outlet head (512) is detachably connected to the water inlet head (511); and the flow stop plate (52) and the elastic member (53) are arranged between the water inlet head (511) and the water outlet head (512).

7. A peristaltic pump according to claim 6, characterized in that: The water outlet head (512) is threadedly connected to the water inlet head (511).

8. A peristaltic pump according to claim 6, characterized in that: The peripheral side of the water inlet head (511) is clamped on the pump housing (1), and one end of the water inlet head (511) is plugged into the water outlet end of the peristaltic tube (4).

9. A peristaltic pump according to claim 8, characterized in that: The end of the water inlet head (511) close to the peristaltic tube (4) is arranged in a truncated cone shape, and the end close to the peristaltic tube (4) has a smaller diameter.

10. A peristaltic pump according to claim 5, characterized in that: The water outlet nozzle (5) further comprises a sealing ring (54), wherein the sealing ring (54) is arranged at an end of the flow stop plate (52) away from the elastic member (53).

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