A peristaltic pump and a delivery system having the same

Abstract

The present invention proposes a peristaltic pump and a delivery system having the pump, wherein the peristaltic pump comprises a driving assembly and a pump head assembly, wherein the driving assembly comprises a motor, a driving part housing and a gear transmission group, wherein the motor and the pump head assembly are installed on one side of the driving part housing, and the gear transmission group is installed on the other side of the driving part housing, wherein the pump head assembly comprises an interface adapter, a pump housing, a roller assembly and a pump tube, wherein the interface adapter is installed on the pump housing, wherein the roller assembly is installed between the interface adapter and the pump housing and is connected to the gear transmission group, wherein the motor controls the rotation of the roller assembly through the gear transmission group, and wherein both ends of the pump tube are connected to the interface adapter. The peristaltic pump has a small overall volume and is easy to assemble and maintain; wherein the delivery system has the above-mentioned peristaltic pump, which can avoid the problem of liquid leakage to the outside of the household appliance due to the rupture of the pump tube.

Description

[Technical field]

[0001] The invention relates to the technical field of fluid delivery pumps, in particular to a peristaltic pump and a delivery system with the pump. [Background technology]

[0002] Peristaltic pump is a new type of fluid delivery pump after rotor pump, centrifugal pump, diaphragm pump, etc. It is being widely promoted and applied in various industries such as medical treatment, medicine, food, beverage, chemical industry, smelting, etc. When the peristaltic pump works, it relies on the roller assembly to rotate in an arc or the pressure block assembly to squeeze the elastic pump tube in a serpentine straight line. The roller assembly or the pressure block assembly requires more than two rollers or pressure blocks to squeeze the elastic pump tube to transport the fluid. Existing peristaltic pumps have certain defects:

[0003] 1. The motor and pump components of conventional peristaltic pumps are arranged coaxially on opposite sides, and the overall thickness is too large.

[0004] 2. After a conventional peristaltic pump has been working for a long time, it is maintained by removing the pump cover and replacing the pump tube, and the overall assembly is more complicated.

[0005] In addition, most of the existing household appliances with a dispensing system (such as washing machines and dishwashers) require a liquid transfer pump and a related control system to be configured for the liquid storage box to achieve automatic dispensing of detergent. Conventional peristaltic pumps are used, which are inconvenient to maintain; and when the pump tube of the peristaltic pump breaks, the detergent is likely to leak to the outside of the household appliance. [Summary of the invention]

[0006] The purpose of the present invention is to solve the problems in the prior art and to propose a peristaltic pump and a dispensing system having the pump. The peristaltic pump has an overall thin thickness and is easy to assemble and maintain. The dispensing system having the peristaltic pump can avoid the problem of liquid leakage to the outside of the home appliance due to rupture of the pump tube.

[0007] To achieve the above-mentioned purpose, the present invention proposes a peristaltic pump, which includes a drive assembly and a pump head assembly detachably mounted on the drive assembly, the drive assembly including a motor, a drive housing and a gear transmission group, the motor and the pump head assembly are mounted on one side of the drive housing, and the gear transmission group is mounted on the other side of the drive housing, the pump head assembly includes an interface adapter, a pump housing, a roller assembly and a pump tube, the interface adapter is mounted on the pump housing, the roller assembly is mounted between the interface adapter and the pump housing, and is transmission-connected to the gear transmission group, the motor controls the rotation of the roller assembly through the gear transmission group, the pump tube is arranged between the pump housing and the roller assembly, and both ends are connected to the interface adapter.

[0008] Preferably, the drive assembly is connected to the pump head assembly by snap-fitting, the bottom of the interface adapter has a first flange, the top of the pump housing has a second flange, and the outer wall of the drive unit housing is provided with a first positioning card frame and a second positioning card frame respectively matched with the first flange and the second flange, the inner sides of the first positioning card frame and the second positioning card frame are respectively provided with anti-drop grooves, and one end is a closed end, and the other end has an opening for the first flange and the second flange to enter.

[0009] Preferably, the anti-dropping slot is an arc-shaped slot, and the openings of the first positioning card frame and the second positioning card frame are located at opposite ends.

[0010] Preferably, a positioning plate is further provided on the pump housing, a locking groove is provided on the positioning plate, and a fixing seat and a locking member are further provided on the drive unit housing, one end of the locking member is connected to the fixing seat, and the other end of the locking member cooperates with the locking groove to prevent the first protrusion and the second protrusion from escaping from the first positioning card frame and the second positioning card frame.

[0011] Preferably, the interface adapter is snap-fitted with the pump housing to form an outer shell of the pump head assembly, buckles are symmetrically provided on both sides of the interface adapter, and slots matching the buckles are symmetrically provided on both sides of the pump housing.

[0012] Preferably, the driving gear of the gear transmission group is connected to the transmission shaft of the motor, and a roller driving shaft is provided at the center of the roller assembly. One end of the roller driving shaft is plugged into and matched with the driven gear of the gear transmission group for transmission, and the other end is plugged into and matched with the roller bracket of the roller assembly for transmission.

[0013] Preferably, the drive unit housing includes a drive unit outer shell and a drive unit back cover, the drive unit outer shell and the drive unit back cover are connected by a plurality of fasteners, and a cavity for installing a gear transmission group is formed therebetween, and the drive unit outer shell is provided with a center hole for inserting a roller drive shaft of the roller assembly.

[0014] The present invention also provides a delivery system, which is provided with the peristaltic pump mentioned above.

[0015] Preferably, the delivery system further comprises a liquid delivery module, the liquid delivery module comprising a liquid delivery module housing and a liquid storage box, the drive assembly of the peristaltic pump is arranged on the liquid delivery module housing, the liquid storage box is installed in the liquid delivery module housing, the liquid delivery module housing has a liquid storage box slot for inserting the liquid storage box on the side facing the liquid storage box, the pump head assembly of the peristaltic pump is arranged in a chamber formed between the liquid storage box and the liquid delivery module housing, and the liquid storage box is provided with a connector assembly connected to the interface adapter of the peristaltic pump.

[0016] The present invention also proposes a delivery system, which also includes a liquid delivery module, the liquid delivery module includes a liquid delivery module housing and a liquid storage box, the drive component of the peristaltic pump is arranged on the liquid delivery module housing, the pump head component of the peristaltic pump is arranged on the liquid storage box, the liquid storage box is installed in the liquid delivery module housing, the liquid delivery module housing has a liquid storage box groove for the liquid storage box to be placed on the side facing the liquid storage box, the pump head component is installed on the side facing the liquid storage box groove, the pump housing of the pump head component is arranged on the liquid storage box, and a sealing plate is also installed on the pump housing, and a chamber for accommodating an interface adapter and a roller assembly is formed between the two.

[0017] Beneficial effects of the present invention:

[0018] 1. The motor and pump components are arranged in parallel on the same side, and the overall structure is compact and the thickness is smaller.

[0019] 2. The integral detachable pump head assembly is adopted, which is convenient for disassembling the pump head assembly as a whole and replacing the pump tube.

[0020] 3. The dispensing system with the peristaltic pump can avoid the problem of liquids such as detergent accidentally flowing out of the appliance due to damage to the pump tube.

[0021] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a peristaltic pump of the present invention;

[0023] Figure 2 It is a schematic diagram of the main structure of a peristaltic pump of the present invention;

[0024] Figure 3 yes Figure 2 AA section diagram of ;

[0025] Figure 4 It is a structural schematic diagram of a driving assembly of a peristaltic pump of the present invention;

[0026] Figure 5 It is an exploded schematic diagram of a driving assembly of a peristaltic pump of the present invention;

[0027] Figure 6 It is a structural schematic diagram of a pump head assembly of a peristaltic pump of the present invention;

[0028] Figure 7 It is an exploded schematic diagram of a pump head assembly of a peristaltic pump of the present invention;

[0029] Figure 8 It is a three-dimensional structural schematic diagram of a delivery system embodiment 1 of the present invention;

[0030] Fig. 9 It is a front view schematic diagram of a delivery system embodiment 1 of the present invention;

[0031] Fig.10 yes Fig. 9 BB section schematic diagram;

[0032] Fig.11 It is an exploded schematic diagram of a delivery system embodiment 1 of the present invention;

[0033] Fig.12 It is a front view schematic diagram of a delivery system embodiment 2 of the present invention;

[0034] Fig.13 yes Fig.12 Schematic diagram of CC section;

[0035] Fig.14 It is an exploded schematic diagram of Embodiment 2 of a delivery system of the present invention. [Specific implementation method]

[0036] See also Figures 1 to 7 The present invention provides a peristaltic pump, which includes a drive assembly 10 and a pump head assembly 20 detachably mounted on the drive assembly 10. The drive assembly 10 includes a motor 1, a drive housing 2 and a gear transmission group 3. The motor 1 and the pump head assembly 20 are mounted on one side of the drive housing 2, and the gear transmission group 3 is mounted on the other side of the drive housing 2. The pump head assembly 20 includes an interface adapter 4, a pump housing 5, a roller assembly 6 and a pump tube 8. The interface adapter 4 is mounted on the pump housing 5, and the roller assembly 6 is mounted between the interface adapter 4 and the pump housing 5, and is in transmission connection with the gear transmission group 3. The motor 1 controls the rotation of the roller assembly 6 through the gear transmission group 3. The pump tube 8 is arranged between the pump housing 5 and the roller assembly 6, and the two ends are connected to the interface adapter 4.

[0037] Further, see Figures 3 to 7 The drive assembly 10 is connected with the pump head assembly 20 by snap-fitting, the bottom of the interface adapter 4 has a first convex edge 42, the top of the pump housing 5 has a second convex edge 51, and the outer wall of the drive housing 2 is provided with a first positioning card frame 211 and a second positioning card frame 212 respectively matched with the first convex edge 42 and the second convex edge 51, and the inner sides of the first positioning card frame 211 and the second positioning card frame 212 are respectively provided with anti-dropping card grooves, and one end is a closed end 213, and the other end has an opening 214 for the first convex edge 42 and the second convex edge 51 to enter. In this embodiment, the anti-dropping card groove is an arc groove, and the positions of the openings 214 of the first positioning card frame 211 and the second positioning card frame 212 are at opposite ends.

[0038] Further, see Figures 3 to 7 The pump housing 5 is also provided with a positioning plate 52, and the positioning plate 52 is provided with a locking groove 521. The drive unit housing 2 is also provided with a fixing seat 215 and a locking member 216. One end of the locking member 216 is connected to the fixing seat 215, and in this embodiment, a threaded connection is adopted for fixing. The other end of the locking member 216 cooperates with the locking groove 521 to prevent the first flange 42 and the second flange 51 from escaping from the first positioning card frame 211 and the second positioning card frame 212.

[0039] Further, see Figure 7 The interface adapter 4 and the pump housing 5 are buckled together to form the outer shell of the pump head assembly 20. Buckles 43 are symmetrically provided on both sides of the interface adapter 4, and slots 53 adapted to the buckles 43 are symmetrically provided on both sides of the pump housing 5. In this embodiment, two terminals 410 for connecting the two ends of the pump tube 8 and two interface terminals 41 respectively connected to the two terminals 410 are provided below the interface adapter 4, and a pump interface sealing ring 411 is sleeved on the outer wall of the interface terminal 41.

[0040] Further, see Figure 3 , 5 , 7, the driving gear of the gear transmission group 3 is connected to the transmission shaft 11 of the motor 1, and a roller driving shaft 7 is provided at the center of the roller assembly 6, one end of the roller driving shaft 7 is plugged and matched with the driven gear of the gear transmission group 3 for transmission, and the other end is plugged and matched with the roller bracket 61 of the roller assembly 6 for transmission. In this embodiment, the gear transmission group 3 includes a driving gear, a driven gear, and a plurality of transmission gears arranged between the driving gear and the driven gear. Two first driving heads 71 ​​and second driving heads 72 with notches are provided at both ends of the roller driving shaft 7, and a first driving seat 31 and a second driving seat 612 adapted to the first driving head 71 and the second driving head 72 are provided on the driven gear and the roller bracket 61, respectively. The outer sleeve of the first driving seat 31 is provided with a driving part seal 32 that is tightly matched with the driving part housing 2.

[0041] Further, see Figure 7 The roller assembly 6 includes a roller bracket 61, a roller 62 and a bracket cover 63. The roller bracket 61 is connected to the bracket cover 63. The roller bracket 61 is provided with a plurality of roller shafts 611 on the side facing the bracket cover 63. The roller 62 is mounted on the roller shaft 611. The bracket cover 63 is provided with a plurality of clamping columns connected to the roller shafts on the side facing the roller bracket 61.

[0042] Further, see Figure 4 , 5The drive housing 2 includes a drive housing 21 and a drive back cover 22, which are connected by a plurality of fasteners, and a chamber for installing the gear transmission group 3 is formed therebetween. The drive housing 21 is provided with a central hole 210 for inserting the roller drive shaft 7. In this embodiment, the drive housing 21 includes a motor fixing portion 2101 and a pump head fixing portion 2102, which are arranged sequentially from bottom to top. The motor 1 is installed on the motor fixing portion 2101 by a plurality of fasteners, and the pump head assembly 20 is fixed on the pump head fixing portion 2102 by snapping.

[0043] Example 1 of the delivery system

[0044] See also Figures 8 to 11 In this embodiment, the delivery system has the above-mentioned peristaltic pump. Specifically, in this embodiment, the delivery system also includes a liquid delivery module, and the liquid delivery module includes a liquid delivery module housing 30 and a liquid storage box 40. The drive assembly 10 of the peristaltic pump is arranged on the liquid delivery module housing 30. In this embodiment, the liquid delivery module housing 30 is a deformed structure of the drive unit housing 21, and the two are integrally formed. The liquid storage box 40 is installed in the liquid delivery module housing 30. The liquid delivery module housing 30 has a liquid storage box groove 31 for the liquid storage box 40 to be placed on the side facing the liquid storage box 40. The pump head assembly 20 of the peristaltic pump is arranged in the chamber formed between the liquid storage box 40 and the liquid delivery module housing 30. The liquid storage box 40 is provided with a connector assembly 50 connected to the interface adapter 4 of the peristaltic pump.

[0045] Example 2 of the delivery system

[0046] See also Figure 12 to Figure 14In this embodiment, the dosing system has a peristaltic pump, which includes a drive assembly 10 and a pump head assembly 20 detachably mounted on the drive assembly 10. The drive assembly 10 includes a motor 1, a drive housing 2 and a gear transmission group 3. The motor 1 and the pump head assembly 20 are sequentially mounted on one side of the drive housing 2 from bottom to top, and the gear transmission group 3 is mounted on the other side of the drive housing 2. The drive housing 2 includes a drive housing 21 and a drive back cover 22. The drive housing 21 and the drive back cover 22 are connected by Several fasteners are connected, and a chamber for installing the gear transmission group 3 is formed between the two. The pump head assembly 20 includes an interface adapter 4, a pump housing 5, a roller assembly 6 and a pump tube 8. The pump housing 5 is installed on the interface adapter 4, and the roller assembly 6 is installed in the chamber between the interface adapter 4 and the pump housing 5, and is connected to the gear transmission group 3. The motor 1 controls the roller assembly 6 to rotate through the gear transmission group 3. The pump tube 8 is arranged in the area between the pump housing 5 and the roller assembly 6, and the two ends are connected to the interface adapter 4.

[0047] The delivery system further includes a liquid delivery module, which includes a liquid delivery module housing 30 and a liquid storage box 40. The drive assembly 10 of the peristaltic pump is disposed on the liquid delivery module housing 30. In the present embodiment, the liquid delivery module housing 30 is a deformed structure of the drive unit housing 21, and the two are integrally formed. The pump head assembly 20 of the peristaltic pump is disposed on the liquid storage box 40, and the liquid storage box 40 is installed in the liquid delivery module housing 30. The liquid delivery module housing 30 has a liquid storage box slot 31 for the liquid storage box 40 to be placed on the side facing the liquid storage box 40, and the pump head assembly 20 is installed on the side facing the liquid storage box slot 31 of the liquid storage box 40. In the present embodiment, the pump housing 5 of the pump head assembly 20 is integrally formed with the liquid storage box 40, and a sealing plate 401 is also installed on the pump housing 5, and a chamber for accommodating the interface adapter 4 and the roller assembly 6 is formed between the two.

[0048] Working process of the present invention:

[0049] When the peristaltic pump of the present invention is in use, the motor 1 controls the roller assembly 6 to rotate through the gear transmission group 3 and the roller drive shaft 7, and the roller 62 rotates to squeeze the elastic pump tube 8 to achieve fluid delivery. When the pump tube needs to be replaced after long-term use, the locking member 216 is first removed, and then the pump head assembly 20 is rotated to make the first convex edge 42 and the second convex edge 51 respectively disengage from the first positioning clamp frame 211 and the second positioning clamp frame 212, and the pump head assembly 20 can be removed. After removing the pump head assembly 20, first pull out the roller drive shaft 7, and then press the buckles 43 on both sides to disengage them from the slots 53, so that the interface adapter 4 and the pump housing 5 can be separated. After replacing the new pump tube 8, first engage the interface adapter 4 and the pump housing 5, and then insert the roller drive shaft 7 into the roller assembly 6 to form the pump head assembly 20. Install the pump head assembly 20 into the first positioning frame 211 and the second positioning frame 212 again, and finally use the locking piece 216 to clamp the positioning plate 52 to complete the assembly.

[0050] In Embodiment 1 of the delivery system of the present invention, the peristaltic pump can be maintained by simply removing the liquid storage box 40, and the working principle and maintenance operation of the peristaltic pump on the delivery system are consistent with the above-mentioned method. In Embodiment 2 of the delivery system of the present invention, the peristaltic pump can be maintained by simply removing the liquid storage box 40 and then removing the sealing plate 401 from the liquid storage box 40. Since the peristaltic pump is arranged in a chamber formed between the liquid storage box 40 and the liquid delivery module housing 30, even if the detergent or other liquid leaks due to failure to replace the pump tube 8 in time, the leaked liquid will remain in the interlayer between the liquid storage box 40 and the liquid delivery module housing 30, avoiding the problem of liquid flowing out from the outside of the appliance.

[0051] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A peristaltic pump, characterized in that: The peristaltic pump comprises a drive assembly (10) and a pump head assembly (20) detachably mounted on the drive assembly (10); the drive assembly (10) comprises a motor (1), a drive housing (2) and a gear transmission group (3); the motor (1) and the pump head assembly (20) are mounted on one side of the drive housing (2); the gear transmission group (3) is mounted on the other side of the drive housing (2); the pump head assembly (20) comprises an interface adapter (4), a pump housing (5), a roller assembly (6) and a pump tube (8); the interface adapter (4) is mounted on the pump housing (5); the roller assembly (6) is mounted between the interface adapter (4) and the pump housing (5) and is in transmission connection with the gear transmission group (3); the motor (1) controls the rotation of the roller assembly (6) through the gear transmission group (3); the pump tube (8) is arranged between the pump housing (5) and the roller assembly (6), and is connected to the interface adapter (4) at both ends; The drive assembly (10) is connected to the pump head assembly (20) by snap-fitting, the bottom of the interface adapter (4) has a first convex edge (42), the top of the pump housing (5) has a second convex edge (51), the outer wall of the drive housing (2) is provided with a first positioning card frame (211) and a second positioning card frame (212) respectively matched with the first convex edge (42) and the second convex edge (51), the inner sides of the first positioning card frame (211) and the second positioning card frame (212) are respectively provided with anti-dropping card grooves, one end of which is a closed end (213), and the other end of which has an opening (214) for the first convex edge (42) and the second convex edge (51) to enter; The interface adapter (4) and the pump housing (5) are buckled together to form an outer shell of the pump head assembly (20); buckles (43) are symmetrically provided on both sides of the interface adapter (4); and slots (53) adapted to the buckles (43) are symmetrically provided on both sides of the pump housing (5).

2. A peristaltic pump according to claim 1, characterized in that: The anti-dropping slot is an arc-shaped slot, and the openings (214) of the first positioning frame (211) and the second positioning frame (212) are located at opposite ends.

3. A peristaltic pump according to claim 1, characterized in that: The pump housing (5) is further provided with a positioning plate (52), and the positioning plate (52) is provided with a locking groove (521). The drive unit housing (2) is further provided with a fixing seat (215) and a locking member (216), one end of the locking member (216) is connected to the fixing seat (215), and the other end of the locking member (216) is matched with the locking groove (521), so as to prevent the first convex edge (42) and the second convex edge (51) from escaping from the first positioning card frame (211) and the second positioning card frame (212).

4. A peristaltic pump according to claim 1, characterized in that: The driving gear of the gear transmission group (3) is connected to the transmission shaft (11) of the motor (1); a roller driving shaft (7) is provided at the center of the roller assembly (6); one end of the roller driving shaft (7) is plugged into and matched with the driven gear of the gear transmission group (3) for transmission, and the other end is plugged into and matched with the roller bracket (61) of the roller assembly (6) for transmission.

5. A peristaltic pump according to claim 1, characterized in that: The drive unit housing (2) comprises a drive unit outer housing (21) and a drive unit back cover (22), wherein the drive unit outer housing (21) and the drive unit back cover (22) are connected via a plurality of fasteners, and a chamber for installing a gear transmission group (3) is formed therebetween, and a center hole (210) is provided on the drive unit outer housing (21) for inserting a roller drive shaft (7) of a roller assembly (6).

6. A delivery system, characterized in that: The delivery system comprises a peristaltic pump as described in any one of claims 1 to 5.

7. A delivery system according to claim 6, characterized in that: The delivery system further comprises a liquid delivery module, the liquid delivery module comprising a liquid delivery module housing (30) and a liquid storage box (40), the drive assembly (10) of the peristaltic pump being arranged on the liquid delivery module housing (30), the liquid storage box (40) being installed in the liquid delivery module housing (30), the liquid delivery module housing (30) having a liquid storage box groove (31) for the liquid storage box (40) to be placed on a side facing the liquid storage box (40), the pump head assembly (20) of the peristaltic pump being arranged in a chamber formed between the liquid storage box (40) and the liquid delivery module housing (30), and the liquid storage box (40) being provided with a joint assembly (50) connected to an interface adapter (4) of the peristaltic pump.

8. A delivery system, characterized in that: The delivery system comprises a peristaltic pump as claimed in claim 1, and the delivery system further comprises a liquid delivery module, the liquid delivery module comprises a liquid delivery module housing (30) and a liquid storage box (40), the drive assembly (10) of the peristaltic pump is arranged on the liquid delivery module housing (30), the pump head assembly (20) of the peristaltic pump is arranged on the liquid storage box (40), the liquid storage box (40) is installed in the liquid delivery module housing (30), the side of the liquid delivery module housing (30) facing the liquid storage box (40) comprises a liquid storage box groove (31) for the liquid storage box (40) to be placed therein, the pump head assembly (20) is installed on the side of the liquid storage box (40) facing the liquid storage box groove (31), the pump housing (5) of the pump head assembly (20) is arranged on the liquid storage box (40), and the pump housing (5) is also mounted with a sealing plate (401), and a chamber for accommodating an interface adapter (4) and a roller assembly (6) is formed between the two.

Images