Digestive juice collecting, filtering and returning device

Abstract

The digestive juice collecting, filtering and returning device is characterized in that the bottom of a vertically-arranged outer cylinder is closed, the top of the vertically-arranged outer cylinder is in an open state, an annular filtering frame and a collecting cylinder with the top open are sequentially arranged in the outer cylinder from top to bottom, and a piston ring is fixed to the peripheral face of the filtering frame; the filtering frame is in sliding fit with the inner wall of the outer barrel in the vertical direction through the piston ring, the collecting barrel is arranged in the outer barrel, the collecting barrel and the filtering frame are arranged at an interval, and the projection of a filtering membrane of the filtering frame in the vertical direction completely falls into the top opening area of the collecting barrel; by driving the filter frame to move downwards, on one hand, the filter frame compresses air between the bottom of the outer cylinder and the filter frame, so that part of air flows out of the filter membrane from bottom to top, and the blocked filter membrane can be dredged, and on the other hand, the overall height of the filter frame is reduced, so that the falling distance of digestive juice is increased, and the vibration sense of the filter membrane is stronger; and dredging of the blocked filter membrane is also facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of separation equipment, in particular to a digestive fluid collection, filtering and re-introduction device. Background Art

[0002] Digestive fluid re-infusion collection refers to the process of collecting digestive fluids (such as gastric juice, bile, pancreatic juice, etc.) originally discharged from the body in a specific way and then re-infusing them into the body. The purpose is to prevent problems such as water and electrolyte imbalance caused by the loss of a large amount of digestive fluid, so that the digestive fluid can maintain a normal digestive process in the body, promote the absorption and digestion of nutrients, and also help maintain the normal physiological state of the intestines and promote the recovery of intestinal motility and function.

[0003] Since there may be some undigested food residues, mucus and other impurities in the digestive fluid, in order to avoid adverse reactions or clogging of the pipeline after reinfusion, the digestive fluid usually needs to be filtered. The traditional method is to pour the digestive fluid from the drainage bag into a measuring cup covered with gauze for filtering. This filtering method has the disadvantage of incomplete filtering.

[0004] In addition, a device named "A device for automatically collecting, filtering and returning digestive fluid" (publication number CN115501035A) discloses a solution for returning, collecting and filtering digestive fluid, which filters the digestive fluid by allowing the digestive fluid to flow naturally through the filter. However, there is a problem of being unable to continue filtering due to clogging of the filter. If the device is disassembled to clear the filter at this time, not only will the filtration efficiency be reduced, but the risk of the digestive fluid being contaminated by the outside world will also be increased. Summary of the invention

[0005] The object of the present invention is to provide a digestive fluid collection, filtration and re-infusion device with thorough filtration and high filtration efficiency.

[0006] The present invention can be implemented through the following technical scheme: a digestive fluid collection, filtering and recycling device, the bottom of a vertically arranged outer cylinder is closed and the top is open, the inner part of the outer cylinder is provided with an annular filter frame and a collection cylinder with an open top in sequence from top to bottom, a piston ring is fixed to the outer peripheral surface of the filter frame, and the filter frame forms a sliding fit with the inner wall of the outer cylinder along the upper and lower directions of the outer cylinder core through the piston ring, the collection cylinder is arranged inside the outer cylinder and is spaced apart from the filter frame, and the projection of the filter membrane of the filter frame in the vertical direction completely falls within the top opening area of ​​the collection cylinder.

[0007] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, by driving the filter frame to move downward along the inner wall of the outer cylinder, the filter frame compresses the air between the bottom of the outer cylinder and the filter frame, which will cause part of the air to flow out from the filter membrane from bottom to top, which is beneficial to unblocking the blocked filter membrane. At the same time, due to the downward displacement of the filter frame, the overall height of the filter frame is reduced, so the falling distance of the digestive liquid falling from the top opening of the outer cylinder is increased, the impact on the filter membrane is also increased, the vibration sense of the filter membrane is stronger, and it is also beneficial to unblock the blocked filter membrane. Due to the continuous reciprocating up and down motion of the filter frame, the falling distance of the digestive liquid falling from the top opening of the outer cylinder is in a changing state, the flushing effect on the filter membrane is better, and the possibility of filter membrane blockage can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0009] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the top of the cover plate in the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 4 It is a schematic diagram of the structure inside the outer cylinder in the present invention; Figure 5 For the present invention Figure 3 A partial enlarged view of the middle A; Figure 6 For the present invention Figure 3 A partial enlarged view of point B in the middle; Figure 7 It is a schematic diagram of the cross-sectional structure of the lower material shell in the present invention; Figure 8 It is a schematic diagram of the cross-sectional structure of the discharge pipe, the connecting pipe and the sealing cover in the present invention; Fig. 9 It is a schematic structural diagram of the present invention when the outer cylinder is a split type.

[0010] In the figure: 10, outer cylinder; 11, partition; 20, filter frame; 21, piston ring; 22, filter membrane; 23, upper annular pressure plate; 24, lower annular pressure plate; 30, collecting cylinder; 31, electric heating plate; 32, second rotating shaft; 321, second gear; 322, stirring blade; 33, second rack; 34, second connecting rod; 35, discharge pipe; 36, connecting pipe; 37, sealing cover; 40, cover plate; 41, through groove; 42, discharge shell; 421, guide block; 4211, inclined surface; 422, discharge pipe; 43, support plate; 44, first rotating shaft; 45, first gear; 46, first rack; 47, first connecting rod; 50, guide rod; 60, push plate; 70, electric cylinder; 80, dust cover. DETAILED DESCRIPTION

[0011] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0012] See also Figure 1-9 As shown, a digestive fluid collection, filtration and re-infusion device is provided, wherein the bottom of a vertically arranged outer cylinder 10 is sealed and the top is open, wherein an annular filter frame 20 and a collection cylinder 30 with an open top are sequentially arranged inside the outer cylinder 10 from top to bottom, wherein a piston ring 21 is fixed to the outer peripheral surface of the filter frame 20, wherein the filter frame 20 forms a sliding fit with the inner wall of the outer cylinder 10 along the up-and-down direction of the cylinder core of the outer cylinder 10 through the piston ring 21, wherein the collection cylinder 30 is arranged inside the outer cylinder 10 and is spaced apart from the filter frame 20, wherein the projection of the filter membrane 22 of the filter frame 20 in the vertical direction completely falls on the top opening of the collection cylinder 30 The filter frame 20 is a circular cylinder with upper and lower openings as a whole. An annular guide plate is integrally formed at the upper bottom of the circular cylinder. A filter membrane 22 is arranged on the inner circumference of the guide plate. The circular cylinder can block the splashed digestion liquid and guide the digestion liquid to flow onto the filter membrane 22 through the guide plate. The projection of the filter membrane 22 of the filter frame 20 in the vertical direction completely falls within the top opening area of ​​the collecting cylinder 30, thereby preventing the digestion liquid from falling outside the collecting cylinder 30. The piston ring 21 on the outer circumference of the filter frame 20 is made of polytetrafluoroethylene material, and the sealing between the filter frame 20 and the inner circumference of the outer cylinder 10 is achieved by the piston ring 21.

[0013] When the above scheme is specifically operated, the digestive liquid can be poured from the top opening of the outer cylinder 10 to the filter frame 20, so that the digestive liquid is filtered in the filter membrane 22 on the filter frame 20. When the filter frame 20 is driven to move downward along the inner wall of the outer cylinder 10, the filter frame 20 compresses the air between the bottom of the outer cylinder 10 and the filter frame 20, which will cause part of the air to flow out from the filter membrane 22 from bottom to top, which is conducive to unblocking the blocked filter membrane 22. At the same time, due to the downward displacement of the filter frame 20, the overall height of the filter frame 20 is reduced, so the falling distance of the digestive liquid falling from the top opening of the outer cylinder 10 is increased, the impact on the filter membrane 22 is also increased, the vibration sense of the filter membrane 22 is stronger, and it is also conducive to unblocking the blocked filter membrane 22. Due to the continuous reciprocating up and down motion of the filter frame 20, the falling distance of the digestive liquid falling from the top opening of the outer cylinder 10 is in a changing state, the flushing effect on the filter membrane 22 is better, and the possibility of blockage of the filter membrane 22 can be reduced.

[0014] like Figure 2 , 3As shown in 4 and 7, the top of the outer cylinder 10 is connected with a cover plate 40 in an inlaid manner, and a through groove 41 is provided at the center of the cover plate 40. A material discharge shell 42 is swingably provided in the through groove 41, and the bottom of the material discharge shell 42 is located below the cover plate 40. Guide blocks 421 are fixed on opposite sides of the bottom inner wall of the material discharge shell 42, and the distance between the opposite sides of the inclined surfaces 4211 of the two guide blocks 421 in the horizontal direction gradually decreases from top to bottom. The bottom of the material discharge shell 42 is arranged obliquely on both sides. There are multiple discharge pipes 422, and one end of the discharge pipe 422 opens on the inclined surface 4211 of the two guide blocks 421; the cover plate 40 and the outer cylinder 10 are detachably connected, and the cover plate 40 provides support for the discharge shell 42 and other structures; the end of the discharge pipe 422 opened on the inclined surface 4211 is located close to the bottom inner wall of the discharge shell 42, which is used to guide the digestion liquid in the discharge shell 42 to flow out of the discharge shell 42. Since the discharge shell 42 is in a swinging state, the bottom of the discharge shell 42 The digestive liquid can flow into the discharge pipe 422 during the left and right swinging process, ensuring that the digestive liquid in the discharge shell 42 can be completely discharged; the horizontal distance between the inclined surfaces 4211 on both sides of the two guide blocks 421 gradually decreases from top to bottom, so that after the digestive liquid is poured into the discharge shell 42, the liquid level in the discharge shell 42 can be quickly raised, thereby reducing the digestive liquid from splashing to the outside of the discharge shell 42. Because the distance between the two opposite side surfaces at the bottom of the discharge shell 42 is too large, the digestive liquid that has just entered the discharge shell 42 is directly discharged from the discharge pipe 422, so that the digestive liquid continues to impact the bottom of the discharge shell 42 and causes serious splashing; the oblique arrangement structure of the discharge pipe 422 increases the flow range of the digestive liquid after the filter frame 20 swings, thereby increasing the contact area between the digestive liquid and the filter membrane 22, thereby avoiding the digestive liquid from continuously passing through a small area on the surface of the filter membrane 22, which can reduce the possibility of blockage of the filter membrane 22 and is conducive to improving the filtration speed of the filter membrane 22.

[0015] like Figure 2 , 3As shown in Figure 4, two support plates 43 perpendicular to the top surface of the cover plate 40 are fixed on the top of the cover plate 40, and the two support plates 43 are symmetrically arranged on both sides of the through groove 41. The two support plates 43 are rotatably connected with a first shaft 44, and one end of the two first shafts 44 is fixed to the side wall of the unloading shell 42. The other end of one of the first shafts 44 is connected to a first gear 45, and a first rack 46 meshing with the first gear 45 is movably arranged in a direction perpendicular to the top surface of the cover plate 40. The bottom of the first rack 46 is connected to the first gear 45 through a first connecting rod 47. The filter frame 20 is fixed; when the filter frame 20 is driven to move up and down, since the filter frame 20 is connected to the first gear 45 through the first connecting rod 47 to form an integrated structure, the first rack 46 will move up and down, so that the first rack 46 and the first gear 45 will mesh, and the first gear 45 will drive the discharge shell 42 to swing back and forth through the first rotating shaft 44, and the digestive fluid in the discharge shell 42 will fall on the surface of the filter membrane 22 over a large area through the discharge pipe 422, so as to reduce the possibility of blockage of the filter membrane 22, and at the same time help to increase the filtration speed of the filter membrane 22.

[0016] Preferably, Figure 3 , 4 As shown, two guide rods 50 are symmetrically arranged on the bottom surface of the filter frame 20 along the radial direction of the outer cylinder 10, and a horizontal partition 11 is fixed on the inner wall of the outer cylinder 10 in the circumferential direction. The filter frame 20 and the collection cylinder 30 are located directly above the partition 11, and the collection cylinder 30 is arranged on the top surface of the partition 11 and between the two guide rods 50; the bottom end of the guide rod 50 passes through the partition 11, and the guide rod 50 and the partition 11 form a sliding fit along the length direction of the guide rod 50; the inner surface of the outer cylinder 10 is provided with a push plate 60 in the area below the partition 11, and the push plate 60 The top surface is fixed to the bottom end of the guide rod 50, and the push plate 60 is driven to move upward or downward by the piston rod of the electric cylinder 70, and a rubber seal is passed between the guide rod 50 and the partition 11; when in use, the electric cylinder 70 is started, so that the electric cylinder 70 drives the push plate 60 to move downward or upward through the piston rod, and the push plate 60 drives the filter frame 20 to generate a linear motion in the up and down directions through the guide rod 50; a guide sleeve is provided at the position where the partition 11 contacts the guide rod 50, and the guide rod 50 and the guide sleeve form a sliding fit along the length direction of the guide rod 50, and a rubber seal is provided in the guide sleeve to achieve sealing between the guide rod 50 and the guide sleeve.

[0017] like Figure 3 , 4As shown, an electric heating plate 31 is arranged in the bottom wall of the collecting cylinder 30, a second rotating shaft 32 is arranged inside the collecting cylinder 30 to rotate along its radial direction, a stirring blade 322 is arranged on the outer peripheral surface of the second rotating shaft 32, one end of the second rotating shaft 32 passes through the collecting cylinder 30 and is connected to a second gear 321, a second rack 33 arranged vertically is meshed on the outer periphery of the second gear 321, and the top of the second rack 33 is fixed to the filter frame 20 by a second connecting rod 34; a controller for controlling the operation of the electric heating plate 31 is arranged on the outer side wall of the outer cylinder 10, the digestive fluid is heated by the electric heating plate 31, and the digestive fluid is heated to the normal body temperature of the human body, so as to avoid the occurrence of temperature-induced The situation of intestinal discomfort caused by excessive temperature difference; in order to make the temperature of the digestive fluid inside the collecting tube 30 reach consistency, the meshing movement of the second rack 33 and the second gear 321 can be realized by the up and down displacement of the filter frame 20, so that the second gear 321 drives the second rotating shaft 32 and the stirring blade 322 to rotate, so as to stir the digestive fluid. In the process of the stirring blade 322 turning up or pressing down the digestive fluid, the position of the digestive fluid at the bottom of the collecting tube 30 and the digestive fluid at the top of the collecting tube 30 are exchanged. On the one hand, the digestive fluid entering the bottom of the collecting tube 30 can be heated by the electric heating plate 31, and on the other hand, the flow of the digestive fluid in the collecting tube 30 is accelerated, so that the temperature of each position of the digestive fluid is consistent.

[0018] Preferably, Figure 4 , 6 As shown, the top and bottom surfaces of the filter frame 20 are respectively fixed with an upper annular pressing plate 23 and a lower annular pressing plate 24, the bottom surface of the upper annular pressing plate 23 is also pressed on the top surface of the piston ring 21, and the top surface of the lower annular pressing plate 24 is also pressed on the bottom surface of the piston ring 21; since the piston ring 21 is subjected to the shear force in the process of moving up and down with the filter frame 20, there is a risk of separation between the piston ring 21 and the filter frame 20. If the piston ring 21 is separated from the filter frame 20, the outer periphery of the filter frame 20 will be separated from the outer cylinder 10, the seal between the inner periphery of the outer cylinder 10 disappears, so that when the filter frame 20 compresses the gas below it, the gas flows out from the gap between the outer periphery of the filter frame 20 and the inner periphery of the outer cylinder 10, which will eventually reduce the clearing effect on the filter membrane 22; in order to avoid the occurrence of this phenomenon, an upper annular pressure plate 23 and a lower annular pressure plate 24 are respectively provided on the top surface and the bottom surface of the filter frame 20, and the upper annular pressure plate 23 and the lower annular pressure plate 24 are used to limit the deformation direction of the piston ring 21 to ensure the stable connection between the piston ring 21 and the filter frame 20.

[0019] like Figure 4 , 6As shown, the first connecting rod 47 is fixed on the top surface of the upper annular pressure plate 23, the second connecting rod 34 is fixed on the bottom of the lower annular pressure plate 24, and the top end of the guide rod 50 is detachably connected to the bottom surface of the lower annular pressure plate 24; the connection between the first connecting rod 47 and the upper annular pressure plate 23 prevents the first connecting rod 47 from squeezing the piston ring 21; the connection between the guide rod 50 and the lower annular pressure plate 24 also prevents the guide rod 50 from squeezing the piston ring 21, and at the same time provides a position for the installation and disassembly of the guide rod 50, so as to facilitate the disassembly and assembly of the guide rod 50.

[0020] like Figure 4 , 8 As shown, a discharge pipe 35 is provided on one side of the bottom of the collecting cylinder 30, and the discharge pipe 35 mouth end is located inside the outer cylinder 10, and a connecting pipe 36 is penetrated and slidably provided on the side wall of the outer cylinder 10, one end of the connecting pipe 36 is threadedly connected to the discharge pipe 35, and the other end of the connecting pipe 36 is threadedly connected to a sealing cover 37; the contact portion between the connecting pipe 36 and the outer cylinder 10 is sealed with rubber; when the digestive fluid needs to be reinfused, the sealing cover 37 is opened, and the digestive fluid is introduced into the human body, and the digestive fluid in the collecting cylinder 30 will flow out from the outlet ends of the discharge pipe 35 and the connecting pipe 36; wherein, the thread at the connection portion between the connecting pipe 36 and the discharge pipe 35 is a left-handed thread, and the thread between the connecting pipe 36 and the sealing cover 37 is a right-handed thread.

[0021] like Figure 1 As shown, a dust cover 80 is also provided on the top of the cover plate 40, and the bottom surface of the dust cover 80 is arranged in a close fit with the top surface of the cover plate 40; when the device is not in use, the dust cover 80 can be used to cover the top of the cover plate 40 to prevent dust from entering the interior of the outer tube 10 from the through groove 41.

[0022] In addition, in the present application, the outer cylinder 10, the filter frame 20, the collecting cylinder 30, the cover plate 40, and the dust cover 80 are all detachable, which is convenient for cleaning and disinfection; the outer cylinder 10 can be integral or split. Specifically, when the outer cylinder 10 is integral, the filter frame 20 can leave the top of the outer cylinder 10 under the push of the electric cylinder 70, and then the top of the guide rod 50 is separated from the lower annular pressing plate 24. After removing the filter frame 20, the collecting cylinder 30 can be removed from the top of the partition 11, and then they are cleaned and disinfected respectively; when the outer cylinder 10 is split, such as Fig. 9 As shown, each split component can be sealed by a rubber seal, and the connection parts of each split component can be provided with connection ears and connected by bolts.

[0023] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A digestive fluid collection, filtration and re-infusion device, characterized in that: The bottom of the vertically arranged outer cylinder (10) is sealed and the top is open. An annular filter frame (20) and a collection cylinder (30) with an open top are arranged in sequence from top to bottom inside the outer cylinder (10). A piston ring (21) is fixed to the outer peripheral surface of the filter frame (20). The filter frame (20) forms a sliding fit with the inner wall of the outer cylinder (10) along the upper and lower directions of the outer cylinder (10) core through the piston ring (21). The collection cylinder (30) is arranged inside the outer cylinder (10) and is spaced apart from the filter frame (20). The projection of the filter membrane (22) of the filter frame (20) in the vertical direction completely falls within the top opening area of ​​the collection cylinder (30).

2. The digestive fluid collection, filtration and re-infusion device according to claim 1, characterized in that: The top of the outer cylinder (10) is connected with a cover plate (40) in an embedded manner, and a through groove (41) is provided at the center of the cover plate (40). A discharge shell (42) is swingably arranged in the through groove (41), and the bottom of the discharge shell (42) is located below the cover plate (40). Guide blocks (421) are fixed on opposite sides of the bottom inner wall of the discharge shell (42), and the distance between the opposite side inclined surfaces (4211) of the two guide blocks (421) in the horizontal direction gradually decreases from top to bottom. A plurality of discharge pipes (422) are obliquely arranged on both sides of the bottom of the discharge shell (42), and one end of the discharge pipe (422) opens on the inclined surfaces (4211) of the two guide blocks (421).

3. The digestive fluid collection, filtration and re-infusion device according to claim 2, characterized in that: Two support plates (43) perpendicular to the top surface of the cover plate (40) are fixed on the top of the cover plate (40), and the two support plates (43) are symmetrically arranged on both sides of the through groove (41). The two support plates (43) are rotatably connected to the first rotating shaft (44), and one end of the two first rotating shafts (44) is fixed to the side wall of the discharge shell (42), and the other end of one of the first rotating shafts (44) is connected to the first gear (45), and a first rack (46) meshing with the first gear (45) is movably arranged in a direction perpendicular to the top surface of the cover plate (40), and the bottom of the first rack (46) is fixed to the filter frame (20) through a first connecting rod (47).

4. The digestive fluid collection, filtration and re-infusion device according to claim 3, characterized in that: Two guide rods (50) are symmetrically arranged on the bottom surface of the filter frame (20) along the radial direction of the outer cylinder (10); a partition plate (11) in a horizontal state is fixed to the inner wall of the outer cylinder (10) in the circumferential direction; the filter frame (20) and the collection cylinder (30) are located directly above the partition plate (11); the collection cylinder (30) is arranged on the top surface of the partition plate (11) and between the two guide rods (50); the bottom end of the guide rod (50) passes through the partition plate (11) and the guide rod (50) and the partition plate (11) form a sliding fit along the length direction of the guide rod (50).

5. The digestive fluid collection, filtration and re-infusion device according to claim 4, characterized in that: A push plate (60) is arranged inside the outer cylinder (10) in the area below the partition (11). The top surface of the push plate (60) is fixed to the bottom end of the guide rod (50). The push plate (60) is driven by the piston rod of the electric cylinder (70) to move upward or downward. A rubber seal is formed between the guide rod (50) and the partition (11).

6. The digestive fluid collection, filtration and re-infusion device according to claim 5, characterized in that: An electric heating plate (31) is arranged in the bottom wall of the collecting cylinder (30); a second rotating shaft (32) is arranged inside the collecting cylinder (30) to rotate along its radial direction; a stirring blade (322) is arranged on the outer peripheral surface of the second rotating shaft (32); one end of the second rotating shaft (32) passes through the collecting cylinder (30) and is connected to a second gear (321); a second rack (33) arranged vertically is meshed on the outer periphery of the second gear (321); and the top of the second rack (33) is fixed to the filter frame (20) via a second connecting rod (34).

7. The digestive fluid collection, filtration and re-infusion device according to claim 6, characterized in that: An upper annular pressure plate (23) and a lower annular pressure plate (24) are fixed to the top and bottom surfaces of the filter frame (20), respectively. The bottom surface of the upper annular pressure plate (23) is also pressed against the top surface of the piston ring (21), and the top surface of the lower annular pressure plate (24) is also pressed against the bottom surface of the piston ring (21).

8. The digestive fluid collection, filtration and re-infusion device according to claim 7, characterized in that: The first connecting rod (47) is fixed on the top surface of the upper annular pressure plate (23), the second connecting rod (34) is fixed on the bottom of the lower annular pressure plate (24), and the top end of the guide rod (50) is detachably connected to the bottom surface of the lower annular pressure plate (24).

9. The digestive fluid collection, filtration and re-infusion device according to claim 1, characterized in that: A discharge pipe (35) is provided on one side of the bottom of the collecting cylinder (30), and the discharge pipe (35) mouth end of the discharge pipe (35) is located inside the outer cylinder (10). A connecting pipe (36) is penetrated and slidably provided on the side wall of the outer cylinder (10). One end of the connecting pipe (36) is threadedly connected to the discharge pipe (35), and the other end of the connecting pipe (36) is threadedly connected to a sealing cover (37); a rubber seal is used at the contact portion between the connecting pipe (36) and the outer cylinder (10).

10. The digestive fluid collection, filtration and re-infusion device according to claim 2, characterized in that: A dust cover (80) is also provided on the top of the cover plate (40), and the bottom surface of the dust cover (80) is arranged in a close-fitting manner with the top surface of the cover plate (40).

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