Pure water filtering device

Abstract

The utility model belongs to the technical field of medical filtering equipment, and particularly discloses a pure water filtering device which is characterized in that an inlet filter cap is provided with a water inlet and a buffer cavity communicated with the water inlet; one end of the filter element is mounted in the buffer cavity, the filter element is provided with a filter element water inlet and a filter element water outlet, and the filter element water inlet is communicated with the water inlet through the buffer cavity and is staggered from the water inlet. According to the utility model, the buffer cavity and the water inlet of the filter element are arranged in a staggered manner, so that impurities such as hemoglobin or fine blocks in water to be filtered can be precipitated in the buffer cavity, and the load capacity of the filter element is reduced, thereby prolonging the service life of the filter device; and the outlet filter cap buffer cavity is arranged, so that the filtered water flowing out of the outlet filter cap is buffered, and the filtered water has a precipitation effect again, so that the flowing of impurities in the circulating pure water is further reduced, and the load capacity of the filter element is reduced in an auxiliary manner.

Description

Technical Field

[0001] This utility model belongs to the field of medical filtration equipment technology, specifically relating to a pure water filtration device. Background Technology

[0002] An artificial heart is a device that uses mechanical or biomechanical technology to partially or completely replace the function of a natural heart, providing circulatory support for patients. It can not only help patients recover heart function but also serve as a transitional measure before heart transplantation, and in some cases, even become a permanent treatment option. For patients with end-stage heart failure, an artificial heart is a key measure to prolong life and improve quality of life.

[0003] An artificial heart contains a blood pump and bearings, which work together to ensure smooth blood circulation for the patient. However, during operation, trace amounts of blood may leak from the bearing side, or impurities may be generated due to sliding friction wear between the blood seal and the bearing. If excessive amounts of blood or impurities adhere to the bearing, it will cause the bearing to stop rotating, thus affecting the normal functioning of the artificial heart.

[0004] To ensure the stable operation of an artificial heart, a filtration system with a flow path cleaning component must be installed outside the body. This system introduces pure water, filters it, and then flows into the artificial heart, before returning to the cleaning component, forming a cycle. However, existing filtration systems have the following drawbacks: the water to be filtered flows directly from the inlet to the filter element, causing hemoglobin or fine impurities in the blood to easily clog the filter element, shortening the lifespan of the filtration device. Since the system is designed for single use, frequent replacements not only increase costs but also cause inconvenience. Utility Model Content

[0005] The purpose of this invention is to provide a pure water filtration device that performs preliminary sedimentation and filtration of impurities such as hemoglobin or fine particles in the water to be filtered, thereby reducing the load on the filtration device and extending its lifespan.

[0006] The purpose of this utility model is achieved through the following technical solution: specifically, a pure water filtration device is provided, comprising:

[0007] The imported filter cap is equipped with a water inlet and a buffer chamber connected to the water inlet.

[0008] The filter element is installed at one end in the buffer chamber. The filter element has a filter element inlet and a filter element outlet. The filter element inlet is connected to the inlet through the buffer chamber and is offset from the inlet.

[0009] Preferably, the filter element has two or more inlets, which are evenly spaced circumferentially along the end of the filter element that is inserted into the buffer chamber.

[0010] Preferably, the filter element has four water inlets.

[0011] Preferably, it also includes an outlet filter cap, with the other end of the filter element installed in the outlet filter cap, and the outlet filter cap having an outlet that communicates with the outlet of the filter element.

[0012] Preferably, the outlet filter cap is provided with an outlet filter cap buffer cavity that communicates with the water outlet, and the water outlet is located at the end away from the filter element.

[0013] Preferably, it also includes an inlet sensor and an outlet sensor, with the inlet sensor installed on the end of the inlet filter cap furthest from the filter element, and the outlet sensor installed on the outlet filter cap.

[0014] Preferably, the filter element has a raised ring on the outer side of the end near the inlet filter cap, the raised ring has a groove, and the inlet filter cap has a locking platform that cooperates with the groove.

[0015] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0016] By setting up a buffer chamber and an inlet with different axes from the filter cartridge inlet, the water entering the buffer chamber from the inlet has a buffering and sedimentation effect. This allows hemoglobin or fine impurities in the water to be filtered to settle in the buffer chamber before passing through the filter cartridge, reducing the load on the filter cartridge and the impact on it, thereby extending the life of the filtration device. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a schematic diagram of a pure water filtration device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the imported membrane fiber end;

[0020] Figure 3 This is a three-dimensional schematic diagram of a pure water filtration device.

[0021] Figure label:

[0022] 1-Imported filter cap, 11-Water inlet, 12-Buffer chamber, 13-Cage plate.

[0023] 2-Filter element, 21-Filter element inlet, 22-Filter element outlet, 23-Outer shell, 24-Membrane fiber, 25-Inlet membrane fiber end, 26-Outlet membrane fiber end, 27-Protruding ring, 271-Slot, 28-Second sealing ring

[0024] 3-Outlet filter cap, 31-Outlet, 32-Installation groove, 33-Outlet filter cap buffer chamber

[0025] 4-Imported sensor, 41-First sealing ring, 5-Exit sensor. Detailed Implementation

[0026] Please see Figure 1 , Figure 2 and Figure 3 A pure water filtration device includes: an inlet filter cap 1 and a filter element 2.

[0027] The filter cap 1 has an inlet 11 and a buffer chamber 12 connected to the inlet 11. One end of the filter element 2 is installed in the buffer chamber 12. The filter element 2 has an inlet 21 and an outlet 22. The inlet 21 is connected to the inlet 11 through the buffer chamber 12 and is offset from the inlet 11. Specifically, the filter element 2 adopts existing technology. The filter element 2 has a shell 23 and a membrane fiber 24. The membrane fiber 24 is installed in the shell 23. The two ends of the filter element 2 are the inlet membrane fiber end 25 and the outlet membrane fiber end 26, respectively. The two ends of the filter element 2 are sealed with potting compound, wherein the potting compound completely seals the end face of the inlet membrane fiber end 25, that is, the inner hole of the membrane fiber 24 is blocked, and liquid cannot pass through. The end face of the outlet membrane fiber 26 is pre-sintered to seal the inner pores of the membrane fiber 24. Then, it undergoes centrifugal potting. During centrifugal potting, the potting adhesive only seals the gaps between the membrane fibers 24; that is, the gaps between the membrane fibers 24 are sealed by the adhesive. After potting, the sintered portion of the membrane fiber 24 is cut off, exposing the inner pores of the membrane fiber 24. The inner pores of the membrane fiber 24 are not blocked, allowing liquid to flow out. A filter element inlet 21 is provided on the circumferential outer shell 23 of the membrane fiber 24, and the gap between the filter element inlet 21 and the membrane fiber 24 is connected. The inner diameter of the inlet filter cap 1 is larger than the outer diameter of the inlet end of the outer shell 23, and the inlet 11 and the filter element inlet 21 are offset from each other. Preferably, the pure water filtration device adopts an external pressure filtration structure.

[0028] In this pure water filtration device, the water to be filtered enters the buffer chamber 12 from the inlet 11 with the assistance of an external water pump. After accumulating a certain amount in the buffer chamber 12, the water enters the membrane fiber 24 from the filter element inlet 21. Utilizing the filtration characteristics of the membrane fiber 24, the filtered pure water enters the inner pores of the membrane fiber 24 and flows from there to the filter element outlet 22, flowing towards the artificial heart (the filter element's internal structure), forming a filtration flow path and circulating the pure water for filtration, thus achieving the filtration function. There is a sufficient horizontal distance between the inlet 11 and the filter element inlet 21, preventing the water from directly entering the membrane fiber 24. Instead, it accumulates a certain amount in the buffer chamber 12 before entering the membrane fiber 24 from the filter element inlet 21. By using the imported filter cap 1 and the filter element inlet 21 with different axes, when hemoglobin or fine impurities enter the filtration path, they can first settle at the bottom of the buffer chamber 12 before flowing to the membrane fiber 24 for filtration, reducing the load on the membrane fiber 24 and thus extending its lifespan. In addition, the buffer chamber 12 has a buffering effect on the water to be filtered entering from the inlet 11, reducing the impact on the filter element 2, which helps to increase the lifespan of the membrane fiber 24 and also facilitates the precipitation of hemoglobin or impurities in the buffer chamber 12.

[0029] Furthermore, the filter element inlet 21 has two or more inlets, evenly spaced circumferentially along one end of the filter element 2 inserted into the buffer chamber 12. By providing symmetrical filter element inlets 21 on the filter element 2, when the water to be filtered enters the outer surface of the membrane fiber 24, the water flowing out of the symmetrical filter element inlets 21 flows in opposite directions, thereby mitigating the fluid momentum entering the membrane fiber 24, reducing the impact effect of water on the membrane fiber 24, and extending the service life of the membrane fiber 24. Preferably, the filter element inlet 21 has four inlets.

[0030] Furthermore, the device also includes an outlet filter cap (3), with the other end of the filter element (2) installed in the outlet filter cap (3). The outlet filter cap (3) has an outlet (31) that communicates with the filter element outlet (22). The filtered water flows from the inner hole of the membrane fiber 24 to the filter element outlet 22, and then flows into the outlet filter cap, flowing from the outlet towards the artificial heart, forming a filtration flow path.

[0031] Furthermore, the outlet filter cap 3 is provided with an outlet filter cap buffer cavity 33 that communicates with the water outlet 31, and the water outlet 31 is located at the end away from the filter element 2. Specifically, the water outlet 31 is located at the upper end of the outlet filter cap 3, and the outlet filter cap buffer cavity 33 is provided so that the filtered water flowing out of the outlet filter cap 3 plays a buffering role and further settles the filtered water, reducing the flow of impurities in the filtration path and reducing the load on the filter element 2.

[0032] Furthermore, it also includes an inlet sensor 4 and an outlet sensor 5. The inlet sensor 4 is installed at the end of the inlet filter cap 1 away from the filter element 2, and the outlet sensor 5 is installed on the outlet filter cap 3. Specifically, the inlet filter cap 1 is a hollow tube, and the inlet sensor 4 has a first sealing ring 41 on its outer side. The inlet sensor 4 is sealed and installed at one end of the inlet filter cap 1 by interference fit. The outlet filter cap 3 has a mounting groove 32 on its outer side, and the outlet sensor 5 is similarly sealed and installed in the mounting groove 32. The mounting groove 32 has a through hole that communicates with the buffer cavity 33 of the outlet filter cap, and the top of the mounting groove 32 is lower than the height of the outlet 31. The inlet sensor 4 and the outlet sensor 5 respectively detect the water pressure of the inlet filter cap 1 and the outlet filter cap 3, calculate whether the pressure difference across the filter element 2 meets the design value, and evaluate the clogging of the membrane fiber 24 to monitor and evaluate the lifespan of the membrane fiber 24. With this structure, the inlet sensor 4 is placed on the end face of the inlet filter cap 1, and the outlet sensor 5 is placed on the outer side of the outlet filter cap 3, which shortens the placement space and helps to reduce the volume of the pure water filtration device.

[0033] Please see Figure 2 and Figure 3 Furthermore, the filter element 2 has a raised ring 27 on the outer side of the end near the inlet filter cap 1, and the raised ring 27 has a groove 271. The inlet filter cap 1 has a retaining platform 13 that mates with the groove 271. The filter element 2 is engaged in the groove 271 by the retaining platform 13, and the filter element 2 is fixedly installed in the inlet filter cap 1. The outer side of the outlet end of the filter element 2 has a second sealing ring 28, which is sealed in the outlet filter cap 3 by interference fit.

[0034] The pure water filtration device of this invention features a structure with a buffer chamber 12 and an inlet 11 having different axes from the filter element inlet 21. This structure buffers and settles the water entering the buffer chamber 12 from the inlet 11, allowing hemoglobin or fine impurities in the water to be filtered to first settle in the buffer chamber 12 before passing through the membrane fiber 24. This reduces the load on the membrane fiber 24, decreases the impact on the filter element 2, and thus increases the lifespan of the membrane fiber 24. By symmetrically oriented filter element inlets 21 on the filter element 2, when the water to be filtered enters the outer surface of the membrane fiber 24, the water flowing out from the symmetrical inlets 21 flows in opposite directions, mitigating the fluid momentum entering the membrane fiber 24 flow path and reducing the impact on the membrane fiber 24, further increasing its lifespan. An inlet sensor 4 and an outlet sensor 5 are used to assess the clogging of the membrane fiber 24 and monitor the lifespan of the filtration device.

[0035] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific implementation method of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, and improvements made within the scope of the spirit of this utility model should be included within the protection scope of this utility model.

Claims

1. A pure water filtering device, characterized by, The utility model relates to a filter device, comprising: An inlet filter cap (1) is provided with a water inlet (11) and a buffer cavity (12) in communication with the water inlet (11); and A filter core (2) is installed at one end in the buffer cavity (12), the filter core (2) is provided with a filter core water inlet (21) and a filter core water outlet (22), the filter core water inlet (21) is in communication with the water inlet (11) through the buffer cavity (12), and the filter core water inlet (21) is arranged in a staggered manner with the water inlet (11).

2. The pure water filtering device according to claim 1, wherein The filter core water inlet (21) is provided with two or more than two, and is arranged in a circumferential uniform interval along one end of the filter core (2) inserted into the buffer cavity (12).

3. The pure water filtering device according to claim 2, wherein The filter core water inlet (21) is provided with four.

4. The pure water filtering apparatus according to claim 1, 2 or 3, characterized by Further comprising an outlet filter cap (3), the other end of the filter core (2) is installed in the outlet filter cap (3), the outlet filter cap (3) is provided with a water outlet (31) in communication with the filter core water outlet (22).

5. The purified water filtering device according to claim 4, wherein The outlet filter cap (3) is provided with an outlet filter cap buffer cavity (33) in communication with the water outlet (31), and the water outlet (31) is arranged at an end away from the filter core (2).

6. The purified water filtering device according to claim 4, wherein Further comprising an inlet sensor (4) and an outlet sensor (5), the inlet sensor (4) is installed at an end of the inlet filter cap (1) away from the filter core (2), and the outlet sensor (5) is installed on the outlet filter cap (3).

7. The purified water filtering device according to claim 5, wherein Further comprising an inlet sensor (4) and an outlet sensor (5), the inlet sensor (4) is installed at an end of the inlet filter cap (1) away from the filter core (2), and the outlet sensor (5) is installed on the outlet filter cap (3).

8. The pure water filtering device according to claim 5, 6 or 7, characterized by The filter core (2) is provided with a convex ring (27) outside one end close to the inlet filter cap (1), the convex ring (27) is provided with a clamping groove (271), and the inlet filter cap (1) is provided with a clamping table (13) matched with the clamping groove (271).

Images