A double gear pump filtration system

Abstract

This invention discloses a double-gear pump filtration system. The overall assembly structure includes a peritoneal dialysis fluid filter, a double-gear pump, a motor drive shaft, a front pump cover, a rear pump cover, and a sliding control valve. The pump body has an inlet and an outlet connecting to its internal pump chamber. A piston-controlled sliding control valve is mounted on the front pump cover; changing the piston's position allows the double-gear pump to operate in either a 2-in-2-out or 1-in-2-out configuration. The outlet is connected to the peritoneal dialysis fluid filter via a flexible hose. When both inlets are connected simultaneously, turbulent flow is created inside the peritoneal dialysis fluid filter, resulting in better filtration and higher filtration efficiency.

Description

Technical Field

[0001] This invention relates to the field of peritoneal dialysis fluid filter technology, and more particularly to a double gear pump filtration system. Background Technology

[0002] Compared to the continuous operation of a healthy kidney, the discontinuous nature of conventional blood purification methods leads to low efficiency in clearing uremic toxins. Fluid and uremic toxins accumulate between dialysis sessions, and subsequently, the concentrations of fluid, uremic toxins, and electrolytes fluctuate rapidly during dialysis, differing significantly from the stable internal environment maintained by a healthy kidney. Currently, most patients undergo intermittent renal replacement therapy in hospitals using large, immobile machines, which greatly reduces their daily living abilities. To address this issue, there is a growing interest in developing portable renal replacement therapy devices. With the development of microfluidics and nanotechnology, the first truly portable device for renal replacement therapy, a wearable artificial kidney, was first realized in 2005. This device can provide patients with more frequent and efficient toxin removal treatment outside of hospitals, representing a significant advancement for patients. Further improving toxin removal efficiency and reducing the size of wearable artificial kidneys remain pressing issues. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a dual-gear pump filtration system.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A double-gear pump filtration system is characterized by comprising a peritoneal dialysis fluid filter and a double-gear pump. The peritoneal dialysis fluid filter is provided with a first filter inlet, a second filter inlet, and a filter outlet. The double-gear pump includes a first gear pump and a second gear pump disposed within a pump body, and a first pump inlet, a first pump outlet, a second pump inlet, and a second pump outlet disposed on the pump body. The first pump inlet, the first gear pump, the first pump outlet, and the first filter inlet are sequentially connected, and the second pump inlet, the second gear pump, the second pump outlet, and the second filter inlet are sequentially connected, enabling the peritoneal dialysis fluid to form turbulence within the peritoneal dialysis fluid filter.

[0006] Furthermore, it also includes a motor drive shaft, which is connected in parallel to the first gear pump and the second gear pump, for simultaneously driving the first gear pump and the second gear pump.

[0007] Furthermore, the motor drive shaft meshes simultaneously with the first drive gear on the first gear pump and the second drive gear on the second gear pump via a coaxially connected transmission gear. The transmission gear, the first drive gear, and the second drive gear are all located inside the front end cover.

[0008] Furthermore, the first drive gear is driven to connect to the first gear pump via a first cross-shaped slider connector, and the second drive gear is driven to connect to the second gear pump via a second cross-shaped slider connector.

[0009] Furthermore, it also includes a sliding control valve, which includes a valve body and a piston disposed within the valve body. The valve body is provided with a first valve body inlet, a second valve body inlet, a first valve body outlet, and a second valve body outlet. The first valve body outlet is connected to the first pump inlet, and the second valve body outlet is connected to the second pump inlet. The piston is capable of controlling the on / off state of the first valve body inlet, the second valve body inlet, the first valve body outlet, and the second valve body outlet.

[0010] Furthermore, the valve body is connected to the rear end cover of the double gear pump.

[0011] Furthermore, the second pump inlet passes through the rear end cover and connects to the second valve body outlet.

[0012] Furthermore, the first filter inlet and the first pump outlet, the second filter inlet and the second pump outlet, and the first pump inlet and the first valve body outlet are connected by flexible tubing.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the present invention can select the appropriate flow rate for operation according to different working environments, and can not only have the working mode of ordinary double pump with two inlets and two outlets, but also realize one inlet and two outlets, and one pump with two uses. It has a compact structure, small size, easy installation, and low production cost. The turbulence formed in the filter can improve the filtration efficiency. Attached Figure Description

[0014] Figure 1 The overall three-dimensional structure of the embodiment of the present invention Figure 1 ;

[0015] Figure 2 The overall three-dimensional structure of the embodiment of the present invention Figure 2 ;

[0016] Figure 3 This is a schematic diagram of the rear structure of the double gear pump according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the rear structure of the sliding control valve according to an embodiment of the present invention;

[0018] Figure 5 This is a schematic diagram of the internal structure of the front cover in an embodiment of the present invention;

[0019] Figure 6 This is a top view of a double gear pump according to an embodiment of the present invention;

[0020] Figure 7 This is a cross-sectional view along line AA of an embodiment of the present invention;

[0021] Wherein: 1-peritoneal dialysis fluid filter, 2-first filter inlet, 3-second filter inlet, 4-filter outlet, 5-pump body, 6-first gear pump, 7-second gear pump, 8-first pump inlet, 9-first pump outlet, 10-second pump inlet, 11-second pump outlet, 12-motor drive shaft, 13-drive gear, 14-first drive gear, 15-second drive gear, 16-front end cover, 17-first cross slider connector, 18-second cross slider connector, 19-valve body, 20-piston, 21-first valve body inlet, 22-second valve body inlet, 23-first valve body outlet, 24-second valve body outlet, 25-rear end cover. Detailed Implementation

[0022] To enhance understanding of the present invention, we will now describe it in further detail with reference to the accompanying drawings. These embodiments are for illustrative purposes only and do not constitute a limitation on the scope of protection of the present invention.

[0023] Figure 1-7 A specific embodiment of a double-gear pump filtration system is shown, including a peritoneal dialysis fluid filter 1, a double-gear pump, a sliding control valve, and a motor drive shaft 12. The peritoneal dialysis fluid filter 1 is provided with a first filter inlet 2, a second filter inlet 3, and a filter outlet 4. The double-gear pump includes a first gear pump 6 and a second gear pump 7 disposed within a pump body 5, and a first pump inlet 8, a first pump outlet 9, a second pump inlet 10, and a second pump outlet 11 disposed on the pump body 5. The first pump inlet 8, the first gear pump 6, the first pump outlet 9, and the first filter inlet 2 are connected in sequence, and the second pump inlet 10, the second gear pump 7, the second pump outlet 11, and the second filter inlet 3 are connected in sequence, enabling the peritoneal dialysis fluid to form turbulence within the peritoneal dialysis fluid filter 1.

[0024] The motor drive shaft 12 meshes simultaneously with the first drive gear 14 on the first gear pump 6 and the second drive gear 15 on the second gear pump 7 via a coaxially connected transmission gear 13. The transmission gear 13, the first drive gear 14, and the second drive gear 15 are all housed within the front end cover 16. The first drive gear 14 is driven and connected to the first gear pump 6 via a first cross-slider connector 17, and the second drive gear 15 is driven and connected to the second gear pump 7 via a second cross-slider connector 18.

[0025] like Figure 4As shown, the sliding control valve includes a valve body 19 and a piston 20 disposed within the valve body 19. The valve body 19 is provided with a first valve body inlet 21, a second valve body inlet 22, a first valve body outlet 23, and a second valve body outlet 24. The first valve body outlet 23 is connected to the first pump inlet 8, and the second valve body outlet 24 is connected to the second pump inlet 10. The piston 20 can control the opening and closing of the first valve body inlet 21, the second valve body inlet 22, the first valve body outlet 23, and the second valve body outlet 24.

[0026] Preferably, the valve body 19 is connected to the rear end cover 25 of the double gear pump. The second pump inlet 10 passes through the rear end cover 25 and connects to the second valve body outlet 24. The first filter inlet 2 and the first pump outlet 9, the second filter inlet 3 and the second pump outlet 11, and the first pump inlet 8 and the first valve body outlet 23 are all connected by flexible tubing.

[0027] By controlling piston 20 to block either the first valve body inlet 21 or the second valve body inlet 22 on valve body 19, the opening and closing states of the corresponding inlets can be achieved. When piston 20 blocks the second valve body inlet 22, the double gear pump operates in a one-in-two-out mode. Peritoneal dialysis fluid flows in through the first valve body inlet 21, with one path sequentially passing through the first valve body outlet 23 and the first pump inlet 8 before entering the suction chamber of the first gear pump 6, and then entering the peritoneal dialysis fluid filter 1 from the first pump outlet 9. The other path sequentially passes through the second valve body outlet 24 and the second pump inlet 10 before entering the suction chamber of the second gear pump 7, and then entering the peritoneal dialysis fluid filter 1 from the second pump outlet 11. When piston 20 leaves the second valve body inlet 22, the double gear pump operates in a two-in-two-out mode. Liquid flows into the valve body through the first valve body inlet 21 and the second valve body inlet 22, and is then pumped into the peritoneal dialysis fluid filter 1 by the first gear pump 6 and the second gear pump 7.

[0028] The peritoneal dialysis fluid entering the peritoneal dialysis fluid filter 1 from the first filter inlet 2 and the second filter inlet 3 undergoes layer-by-layer adsorption and filtration to remove toxins such as urea, urinary protein, and creatinine from the dialysis waste fluid. Turbulence is also formed in the peritoneal dialysis fluid filter 1 to improve filtration efficiency.

[0029] The above specific embodiments are only for illustrating the technical concept and structural features of the present invention, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit and essence of the present invention should fall within the scope of protection of the present invention.

Claims

1. A double-gear pump filtration system, characterized in that: The peritoneal dialysis fluid filter (1) and a double gear pump are included. The peritoneal dialysis fluid filter (1) is provided with a first filter inlet (2), a second filter inlet (3), and a filter outlet (4). The double gear pump includes a first gear pump (6) and a second gear pump (7) disposed in the pump body (5), and a first pump inlet (8), a first pump outlet (9), a second pump inlet (10), and a second pump outlet (11) disposed on the pump body (5). The first pump inlet (8), the first gear pump (6), the first pump outlet (9), and the first filter inlet (2) are connected in sequence. The second pump inlet (10), the second gear pump (7), the second pump outlet (11), and the second filter inlet (3) are connected in sequence. The peritoneal dialysis fluid can form turbulence in the peritoneal dialysis fluid filter (1). It also includes a sliding control valve, which includes a valve body (19) and a piston (20) disposed in the valve body (19). The valve body (19) is provided with a first valve body inlet (21), a second valve body inlet (22), a first valve body outlet (23), and a second valve body outlet (24). The first valve body outlet (23) is connected to the first pump inlet (8), and the second valve body outlet (24) is connected to the second pump inlet (10). The piston (20) can control the opening and closing of the first valve body inlet (21), the second valve body inlet (22), the first valve body outlet (23), and the second valve body outlet (24).

2. The double-gear pumping filtration system according to claim 1, characterized in that: It also includes a motor drive shaft (12), which is connected in parallel to the first gear pump (6) and the second gear pump (7) for simultaneously driving the first gear pump (6) and the second gear pump (7).

3. The double gear pumping filtration system according to claim 2, characterized in that: The motor drive shaft (12) meshes with the first drive gear (14) on the first gear pump (6) and the second drive gear (15) on the second gear pump (7) through a coaxially connected transmission gear (13). The transmission gear (13), the first drive gear (14), and the second drive gear (15) are all located inside the front end cover (16).

4. The double gear pumping filtration system according to claim 3, characterized in that: The first drive gear (14) is driven to connect to the first gear pump (6) via the first cross slider connector (17), and the second drive gear (15) is driven to connect to the second gear pump (7) via the second cross slider connector (18).

5. The double gear pumping filtration system according to claim 1, characterized in that: The valve body (19) is connected to the rear end cover (25) of the double gear pump.

6. The double gear pumping filtration system according to claim 5, characterized in that: The second pump inlet (10) passes through the rear end cover (25) and connects to the second valve body outlet (24).

7. The double gear pumping filtration system according to claim 1, characterized in that: The first filter inlet (2) and the first pump outlet (9), the second filter inlet (3) and the second pump outlet (11), and the first pump inlet (8) and the first valve body outlet (23) are connected by a soft rubber tube.

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