Filling device for blood purification adsorbent

Abstract

The invention relates to the technical field of blood purification treatment equipment, and particularly discloses a blood purification adsorbent filling device which comprises a raw material mixing tank and a transfer mechanism, and a trapping supply pipe communicated with the raw material mixing tank is arranged on the raw material mixing tank; the transfer mechanism comprises a suction filling barrel and a moving assembly used for controlling the suction filling barrel to move, and a suction piston is arranged in the suction filling barrel in a sliding mode. The trapping supply pipes are arranged in the radial direction of the raw material mixing tank, material passing holes are formed in the trapping supply pipes, the length direction of the material passing holes is parallel to the axial direction of the raw material mixing tank, the trapping supply pipes are communicated with an inner cavity of the raw material mixing tank through the material passing holes, and opening and closing pieces are movably arranged on the trapping supply pipes. The opening and closing piece controls opening or closing of the material passing holes. By means of the arrangement mode of the trapping supply pipes and the arrangement of the material passing holes, adsorbent particles of an adsorbent mixture which can be trapped by the trapping supply pipes have high uniformity.

Description

Technical Field

[0001] The present invention relates to the technical field of blood purification treatment equipment, and particularly relates to a filling device for a blood purification adsorbent. Background Art

[0002] Blood purification treatment refers to using certain instruments and equipment to draw a patient's blood out of the body. The blood flows through a plasma separator to separate the plasma, and the plasma is introduced into an immunoadsorption device to contact with an immunoadsorbent, and pathogenic substances are removed in a selective adsorption manner. Then, the purified plasma is transfused back into the patient's body to achieve the treatment purpose.

[0003] A blood purification adsorbent is a mixture of various adsorbent particles and water. Before use, the adsorbent needs to be filled into a perfusion cartridge. The Chinese patent document with the publication number CN215514264U discloses a blood purification adsorbent filling system, which includes a sealed dispensing tank for containing an adsorbent mixture, a liquid pipeline with its bottom communicating with the bottom of the dispensing tank and its top extending out of the dispensing tank, a moving mechanism, a filling cylinder arranged on the moving mechanism and capable of performing a translational movement driven by the moving mechanism, and a piston arranged in the filling cylinder. An opening capable of sealingly connecting with the top of the liquid pipeline is arranged at the lower end of the filling cylinder. The piston performs a translational movement along the axial direction in the filling cylinder so that the filling cylinder can suck or release the adsorbent mixture through the opening; the moving mechanism can drive the filling cylinder to move back and forth between the dispensing tank and the outer shell of the adsorption column; compressed air is introduced into the bottom of the dispensing tank, and the compressed air can stir the adsorbent mixture to circulate to maintain the uniformity of the adsorbent mixture.

[0004] The working state of the stirring paddle or the movement state of the mixture in the dispensing tank when the filling cylinder extracts the mixture in the liquid pipeline is not disclosed in the specification of this solution. Since the position of the liquid pipeline relative to the dispensing tank is fixed, assuming that the mixture in the dispensing tank rotates, then under the action of centrifugal force, the granular agents in the dispensing tank continuously perform circular motion. At the position where the liquid pipeline is located, the density of the granular agents is single, that is, at this time, the liquid pipeline has a poor ability to capture granular agents with different densities, which to a certain extent affects the filling uniformity. Assuming that the mixture in the dispensing tank tends to be stationary, then due to the bottom of the dispensing tank being funnel-shaped and the liquid pipeline being unable to directly reach below the stirring paddle, a large number of granular agents gather in the middle of the dispensing tank, and the capture effect of the liquid pipeline on the large-mass granular agents is reduced, which also affects the filling uniformity. Summary of the Invention

[0005] The present invention provides a filling device for a blood purification adsorbent, aiming to solve the problem of low uniformity of the adsorbent mixture extracted by the liquid pipeline in the related art.

[0006] A filling device for a blood purification adsorbent of the present invention includes a raw material mixing tank and a transfer mechanism. A stirrer and a capture supply pipe are provided on the raw material mixing tank. The capture supply pipe is communicated with the raw material mixing tank. The transfer mechanism includes a moving component and a suction filling cylinder. A suction piston is slidably arranged in the suction filling cylinder. The moving component is used to control the movement of the suction filling cylinder. The suction filling cylinder and the capture supply pipe are selectively communicated. There are multiple capture supply pipes, and the multiple capture supply pipes are arranged radially along the raw material mixing tank. The length direction of the capture supply pipe is parallel to the axial direction of the raw material mixing tank. Material passing pores are formed on the pipe wall of the capture supply pipe. The length direction of the material passing pores is the same as the length direction of the capture supply pipe. The inner cavity of the capture supply pipe is communicated with the inner cavity of the raw material mixing tank through the material passing pores. An opening and closing member is movably arranged on the capture supply pipe. The opening and closing member is used to control the opening or closing of the material passing pores.

[0007] The effect is as follows: The stirrer is used to stir the adsorbent mixture in the raw material mixing tank. During this process, the material passing pores remain open. The adsorbent mixture in the raw material mixing tank can enter the capture supply pipe through the material passing pores during the rotation process. Since there are multiple distribution points of the multiple capture supply pipes in the radial direction of the raw material mixing tank, and the material passing pores provide channels for adsorbent particles at different positions along the axial direction of the raw material mixing tank to enter the capture supply pipe, the diversity and uniformity of the types of adsorbent particles entering the capture supply pipe as a whole are relatively high. When extracting adsorbent particles, the opening and closing member closes the material passing pores, and the adsorbent particles that have entered the capture supply pipe cannot flow out. At this time, after the suction filling cylinder and the capture supply pipe are communicated, sampling is carried out by suction, so as to obtain adsorbent particles with relatively high uniformity.

[0008] Preferably, the stirrer includes a central axis fixed pipe and a dispersion air pipe. The central axis fixed pipe is fixedly connected to the raw material mixing tank coaxially. The dispersion air pipe is fixedly connected to the side wall of the raw material mixing tank. The inner cavity of the dispersion air pipe is communicated with the inner cavity of the central axis fixed pipe. The central axis fixed pipe is connected to a nitrogen gas source. A plurality of air injection holes are formed on the side wall of the dispersion air pipe.

[0009] Preferably, there are multiple dispersion air pipes, and the multiple dispersion air pipes are arranged in a circumferential array along the central axis fixed pipe. All the air injection holes are arranged in a circumferential array along the raw material mixing tank. A pulse air injection pipe is fixedly connected to the dispersion air pipe at the position of the air injection hole. The nozzle of the pulse air injection pipe is inclined towards the bottom and tangentially of the raw material mixing tank.

[0010] The effect is as follows: After the nitrogen gas source is turned on, each pulse air injection pipe sprays air flow into the mixture. Due to the arrangement mode and nozzle orientation of each pulse air injection pipe, the air flow makes the mixture in the raw material mixing tank tend to rotate circumferentially around the raw material mixing tank, thereby realizing the stirring of the mixture in the raw material mixing tank.

[0011] Preferably, there are two material-passing pores on a single one of the capture supply pipes, and the opening positions of the two material-passing pores are symmetrically arranged with respect to the axis of the capture supply pipe. The opening and closing member is an opening and closing cylinder shell, and the opening and closing cylinder shell is coaxially sleeved outside the capture supply pipe. The inner wall of the opening and closing cylinder shell contacts the outer wall of the capture supply pipe. The circumferential width of the opening and closing cylinder shell is greater than the width of the material-passing pore. A control assembly for controlling the rotation of the opening and closing cylinder shell is provided on the raw material mixing tank.

[0012] The effect is that during the process of the mixture in the raw material mixing tank being stirred and rotating, various adsorbent particles can easily enter and exit the capture supply pipe. When the opening and closing cylinder shell rotates, the relative position between itself and the material-passing pore is changed to achieve the opening and closing control of the material-passing pore, so as to control whether the capture supply pipe and the inner cavity of the mixing cylinder are connected, and further enable the capture supply pipe to capture various adsorbent particles in the capture supply pipe.

[0013] Preferably, the control assembly includes a control cylinder, a control gear and a control rack. The control gear is fixedly connected to the opening and closing cylinder shell coaxially. The control rack is slidably connected to the raw material mixing tank. The control gear meshes with the control rack. The control cylinder is fixedly connected to the raw material mixing tank, and the piston rod of the control cylinder is fixedly connected to the control rack.

[0014] The effect is that the movement of the control rack drives the control gear to rotate, thereby driving the opening and closing cylinder shell to rotate, and further controlling the rotation of each opening and closing cylinder shell to achieve the opening and closing control of the material-passing pore.

[0015] Preferably, a relay mixing bin is fixedly connected to the raw material mixing tank. The relay mixing bin is simultaneously connected to one end of all the capture supply pipes. A docking hole is provided on the relay mixing bin. The docking hole is used for docking and matching with the barrel mouth of the suction filling cylinder. A sealing valve flap is fixedly connected to the hole wall of the docking hole. In the natural state, the sealing valve flap blocks the docking hole. An air pressure balance pipe is fixedly connected and communicated to the relay mixing bin. A one-way valve is provided on the air pressure balance pipe, and the one-way valve allows the gas in the relay mixing bin to flow out of the relay mixing bin.

[0016] The effect is that during the operation of the stirrer, the airflow ejected by the pulse jet pipe enters the relay mixing bin through the capture supply pipe and finally discharges out of the raw material mixing tank through the air pressure balance pipe to maintain the air pressure balance in the raw material mixing tank and the relay mixing bin.

[0017] Preferably, a propulsion piston is slidably arranged in the capture supply pipe. When the material-passing pore is open, the propulsion piston is located at the end of the capture supply pipe far from the relay mixing bin. A driving assembly for driving the propulsion piston to move is provided on the raw material mixing tank.

[0018] The effect is that after a certain amount of adsorbent raw material is collected in the capture supply pipe, the opening and closing cylinder shell closes the material passing pores, and then the pushing piston moves to push the whole mixture in the capture supply pipe into the relay mixing bin and stay at the connection between the relay mixing bin and the capture supply pipe. The materials in different capture supply pipes come into contact and mix with each other in the relay mixing bin, so that the uniformity of the adsorbent mixture in the relay mixing bin is relatively high.

[0019] Preferably, the driving assembly includes a receiving cylinder, an air supply and exhaust pipe, and a plurality of pressure sleeves. The receiving cylinder is fixedly connected to the raw material mixing tank and coaxially communicated with one end of the capture supply pipe far away from the relay mixing bin. The plurality of pressure sleeves are sequentially sleeved on each other, and adjacent pressure sleeves axially slide relative to each other. The pressure sleeves at both ends are respectively fixedly connected to the inner end wall of the receiving cylinder and the pushing piston. The air supply and exhaust pipe is communicated with the inner cavity of the pressure sleeve, and one end of the air supply and exhaust pipe far away from the pressure sleeve is connected with a pressure air source.

[0020] The effect is that after the air supply and exhaust pipe injects gas into the pressure sleeve, the air pressure in the pressure sleeve increases, and the mutually sleeved pressure sleeves have an overall stretching movement tendency, so as to be able to push the pushing piston to move closer to the relay mixing bin. When a negative pressure is generated in the air supply and exhaust pipe, the air pressure in the pressure sleeve decreases, and the mutually sleeved pressure sleeves have an overall shrinking movement tendency, so as to be able to pull the pushing piston to move away from the relay mixing bin; because the pressure sleeves are mutually sleeved, in the overall shrinking state, the volume they occupy is small.

[0021] Preferably, the axes of the suction filling cylinder and the docking hole are both in the vertical direction. A discharge piston is slidably arranged in the relay mixing bin along the horizontal direction. A discharge cylinder for driving the discharge piston to move is fixedly arranged on the raw material mixing tank. The docking hole is located at the top of one end of the relay mixing bin far away from the discharge cylinder.

[0022] Preferably, the lower end of the suction filling cylinder is coaxially fixedly connected and communicated with a matching insertion tube, and the end of the suction piston is coaxially fixedly connected with a matching core rod that can be inserted into the matching insertion tube. When the suction filling cylinder is docked with the docking hole, the matching insertion tube passes through the docking hole and is inserted into the relay mixing bin, and the opposite side walls of the matching insertion tube can be simultaneously abutted against the inner end wall of the relay mixing bin and the discharge piston.

[0023] The effect is that after the suction filling cylinder is docked with the relay mixing bin through the matching insertion tube, the movement of the discharge piston can push the mixture in the relay mixing bin towards the matching insertion tube, so that most of the adsorbent mixture in the relay mixing bin is sucked by the suction filling cylinder.

[0024] By adopting the above technical solutions, the beneficial effects of the present invention are: In the present invention, through the setting of the agitator, the mixture in the raw material mixing tank is stirred in the form of air flow. Since the central fixed pipe and the dispersion air pipe are both fixedly arranged, the capture supply pipe can be located closer to the center of the raw material mixing tank, and the adsorbent mixture at this position is collected. The uniformity of the adsorbent mixture that the capture supply pipe can collect as a whole is relatively high. Moreover, due to the propulsion piston, the discharge piston and the mating insertion pipe, the degree to which the suction filling cylinder can extract the adsorbent mixture collected by the capture supply pipe is relatively thorough, with less residue. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. is a schematic diagram of the overall structure of the filling device for the blood purification adsorbent in the embodiment of the present invention.

[0026] Figure 2 FIG. is a schematic diagram of the structure of the agitator in the embodiment of the present invention.

[0027] Figure 3 FIG. is a schematic diagram of the structure of the supply pipe and the propulsion piston in the embodiment of the present invention.

[0028] Figure 4 FIG. is a schematic diagram of the working principle of the control component in the embodiment of the present invention.

[0029] Figure 5 FIG. is a schematic diagram of the working principle of the drive component in the embodiment of the present invention.

[0030] Figure 6 FIG. is a schematic cross-sectional view of the internal structure of the relay mixing bin in the embodiment of the present invention.

[0031] Figure 7 FIG. is a schematic diagram of the structure when the suction cylinder and the relay mixing bin are about to cooperate in the embodiment of the present invention.

[0032] Reference numerals: 1. Raw material mixing tank; 11. Relay mixing bin; 111. Docking hole; 112. Sealing valve; 12. Air pressure balance pipe; 121. Check valve; 13. Discharge piston; 14. Discharge cylinder; 2. Agitator; 21. Central axis fixed pipe; 22. Dispersion air pipe; 23. Air injection hole; 24. Pulse air injection pipe; 3. Collection and supply pipe; 31. Material passing pore; 32. Opening and closing cylinder shell; 33. Control component; 331. Control cylinder; 332. Control gear; 333. Control rack; 34. Propulsion piston; 35. Driving component; 351. Receiving cylinder; 352. Air supply and extraction pipe; 353. Pressure sleeve; 4. Transfer mechanism; 41. Suction filling cylinder; 411. Matching insertion tube; 42. Suction piston; 421. Matching core rod; 43. Moving component; 431. Horizontal moving carriage; 432. Vertical moving carriage; 433. Horizontal moving slider; 434. Vertical moving slider; 435. Suction cylinder; 5. Adsorption column housing. Specific embodiments

[0033] The following combines Figures 1 to 7 to describe a filling device for a blood purification adsorbent of the present invention.

[0034] This embodiment discloses a filling device for a blood purification adsorbent. As Figure 1 shown, it includes a raw material mixing tank 1 and a transfer mechanism 4. A stirrer 2 and a collection and supply pipe 3 are provided on the raw material mixing tank 1. The raw material mixing tank 1 contains a mixture of various adsorbent particles and water. The stirrer 2 is used to stir the mixture raw material therein; the collection and supply pipe 3 is located inside the raw material mixing tank 1, and the inner cavity of the collection and supply pipe 3 can communicate with the inner cavity of the raw material mixing tank 1. The transfer mechanism 4 includes a moving component 43 and a suction filling cylinder 41. The moving component 43 is used to control the movement of the suction filling cylinder 41. The suction filling cylinder 41 can communicate with the collection and supply pipe 3 and extract the mixture in the raw material mixing tank 1 through it.

[0035] As Figure 1 and Figure 2As shown, the raw material mixing tank 1 is cylindrical with its axis in the vertical direction. The agitator 2 includes a central shaft fixed pipe 21 and a dispersion gas pipe 22. The central shaft fixed pipe 21 and the raw material mixing tank 1 are coaxially and fixedly connected. The dispersion gas pipe 22 is fixedly connected to the side wall of the raw material mixing tank 1. The inner cavity of the dispersion gas pipe 22 communicates with the inner cavity of the central shaft fixed pipe 21. The central shaft fixed pipe 21 is externally connected to a nitrogen gas source (not shown in the figure). There are three dispersion gas pipes 22, and the three dispersion gas pipes 22 are arranged in a circumferential array along the central shaft fixed pipe 21. A plurality of jet holes 23 are formed in the side wall of each dispersion gas pipe 22, and all the jet holes 23 are arranged in a circumferential array along the raw material mixing tank 1. A pulse jet pipe 24 is fixedly connected to the dispersion gas pipe 22 at the position of the jet hole 23, and the nozzle of the pulse jet pipe 24 faces downward and is inclined tangentially to the raw material mixing tank 1. After the nitrogen gas source is turned on, each pulse jet pipe 24 ejects air into the mixture, and the air flow enables the mixture therein to rotate circumferentially around the raw material mixing tank 1, thereby realizing the stirring of the mixture in the raw material mixing tank 1. At the same time, the air flow ejected by the pulse jet pipe 24 has a tendency to move vertically, so that the adsorbent particles in the raw material mixing tank 1 are more uniformly distributed in the horizontal and vertical directions.

[0036] As Figure 1 , Figure 3 and Figure 4 shown, the capture supply pipe 3 is fixedly connected to the inner wall of the raw material mixing tank 1. In this embodiment, there are two capture supply pipes 3, and the arrangement direction of the two capture supply pipes 3 is the radial direction of the raw material mixing tank 1. The length direction of the capture supply pipe 3 is parallel to the axial direction of the raw material mixing tank 1. One of the capture supply pipes 3 is located between the pulse jet pipe 24 and the central shaft fixed pipe 21, and the other capture supply pipe 3 is located between the pulse jet pipe 24 and the inner side wall of the raw material mixing tank 1. Material passing pores 31 are formed in the pipe wall of the capture supply pipe 3, and the length direction of the material passing pores 31 is the same as the length direction of the capture supply pipe 3. The inner cavity of the capture supply pipe 3 communicates with the internal space of the raw material mixing tank 1 through the material passing pores 31. The number of material passing pores 31 on a single capture supply pipe 3 is two, and the two material passing pores 31 are respectively located on the opposite sides of the radius of the raw material mixing tank 1 where the axis of the capture supply pipe 3 is located, that is, the rotating adsorbent mixture in the raw material mixing tank 1 can easily enter and exit the capture supply pipe 3.

[0037] As Figure 3 and Figure 4As shown, an opening and closing member is movably arranged on the trapping supply pipe 3, and the opening and closing member is used to control the opening or closing of the material passing pore 31. The opening and closing member is an opening and closing cylinder shell 32. The opening and closing cylinder shell 32 is coaxially sleeved outside the trapping supply pipe 3, and the inner wall of the opening and closing cylinder shell 32 contacts the outer wall of the trapping supply pipe 3. The circumferential width of the opening and closing cylinder shell 32 is greater than the width of the material passing pore 31. The opening and closing cylinder shell 32 is composed of two concentric and oppositely arranged arc plates, and the axis of the arc plates is the axis of the trapping supply pipe 3. In the axial projection of the trapping supply pipe 3, the angular span of a single material passing pore 31 is 55°, and the angular span of a single arc plate of the opening and closing cylinder shell 32 is 90°. Thus, the opening and closing cylinder shell 32 can completely open or close the material passing pore 31 during rotation. When the opening and closing cylinder shell 32 closes the material passing pore 31, the inner cavity of the trapping supply pipe 3 and the internal space of the raw material mixing tank 1 are relatively isolated, and no material exchange can occur between them.

[0038] As Figure 1 , Figure 3 and Figure 4 shown, a control assembly 33 for controlling the rotation of the opening and closing cylinder shell 32 is arranged on the raw material mixing tank 1. The control assembly 33 includes a control cylinder 331, a control gear 332, and a control rack 333. The number of control gears 332 is the same as that of the opening and closing cylinder shells 32 and they correspond one by one. A single control gear 332 is coaxially and fixedly connected to the upper end of an opening and closing cylinder shell 32. The control rack 333 is slidably connected to the raw material mixing tank 1, and the sliding direction is parallel to the arrangement direction of the two trapping supply pipes 3. The cylinder body of the control cylinder 331 is located outside the raw material mixing tank 1 and is fixedly connected to the raw material mixing tank 1. The piston rod of the control cylinder 331 extends into the raw material mixing tank 1 and is fixedly connected to the control rack 333. The control rack 333 meshes with the two control gears 332 at the same time, that is, the control cylinder 331 can control the synchronous rotation of the two opening and closing cylinder shells 32 to simultaneously control the opening or closing of the material passing pores 31 of the two trapping supply pipes 3.

[0039] As Figure 1As shown, the moving component 43 includes a transverse carriage 431 and a vertical carriage 432. The raw material mixing tank 1 and the adsorption column housing 5 for receiving adsorbent particles are respectively located below the two end parts of the transverse carriage 431. A transverse slider 433 is slidably arranged transversely on the transverse carriage 431, the vertical carriage 432 is fixedly installed on the transverse slider 433, and a vertical slider 434 is slidably arranged vertically on the vertical carriage 432. The suction filling cylinder 41 is fixedly installed on the vertical slider 434, and the axis of the suction filling cylinder 41 is in the vertical direction. At the same time, a suction cylinder 435 is also installed on the vertical slider 434, and the telescopic direction of the piston rod of the suction cylinder 435 is vertical. A suction piston 42 is slidably arranged inside the suction filling cylinder 41, and the end part of the piston rod of the suction cylinder 435 is fixedly connected to the suction piston 42. Both the transverse slider 433 and the vertical slider 434 are driven by electricity to slide, and they jointly control the movement of the suction filling cylinder 41 in the two-dimensional plane; when the suction cylinder 435 controls the movement of the suction piston 42, the lower end opening of the suction filling cylinder 41 can suck or extrude fluid.

[0040] As Figure 1 , Figure 6 and Figure 7 shown, a relay mixing bin 11 is fixedly connected to the top of the raw material mixing tank 1, and the relay mixing bin 11 is simultaneously communicated with the upper ends of two trapping supply pipes 3; a pneumatic balance pipe 12 is fixedly connected and communicated at the top of the relay mixing bin 11, and a one-way valve 121 is arranged on the pneumatic balance pipe 12, and the one-way valve 121 allows the gas in the relay mixing bin 11 to flow out of the relay mixing bin 11. During the operation of the agitator 2, the air flow ejected by the pulse jet pipe 24 enters the relay mixing bin 11 through the trapping supply pipe 3 and finally is discharged out of the raw material mixing tank 1 through the pneumatic balance pipe 12. A docking hole 111 is opened at the top of the relay mixing bin 11, and the axis of the docking hole 111 is in the vertical direction. The docking hole 111 is used for docking and matching with the opening of the suction filling cylinder 41. After the opening of the suction filling cylinder 41 is communicated with the inner cavity of the relay mixing bin 11 through the docking hole 111, the adsorbent mixture in the trapping supply pipe 3 can be sucked. A rubber sealing valve flap 112 is fixedly connected to the hole wall of the docking hole 111. In the natural state, the sealing valve flap 112 blocks the docking hole 111, and the gas ejected by the pulse jet pipe 24 cannot change the closed state of the docking hole 111 by the sealing valve flap 112.

[0041] As Figure 1 , Figure 3 and Figure 5As shown, a propulsion piston 34 is slidably disposed within the capture supply pipe 3, and the sliding direction is the length direction of the capture supply pipe 3. A drive assembly 35 for driving the propulsion piston 34 to move is provided on the raw material mixing tank 1. The drive assembly 35 includes a receiving cylinder 351, a supply and extraction pipe 352, and a number of pressure sleeves 353. The receiving cylinder 351 is fixedly connected to the raw material mixing tank 1 and coaxially communicates with one end of the capture supply pipe 3 away from the relay mixing chamber 11. A plurality of pressure sleeves 353 are coaxially sleeved with each other in sequence, and adjacent pressure sleeves 353 axially slide relative to each other. One of the pressure sleeves 353 at both ends is fixedly connected to the inner bottom wall of the receiving cylinder 351, and the other is fixedly connected to the propulsion piston 34. In this embodiment, the number of pressure sleeves 353 is three. When the three pressure sleeves 353 contract to a state of overlapping each other, the propulsion piston 34 is located at one end of the capture supply pipe 3 away from the relay mixing chamber 11. When the three pressure sleeves 353 extend to a fully expanded state, the propulsion piston 34 moves to the bottom wall of the relay mixing chamber 11. The supply and extraction pipe 352 is fixedly connected to the receiving cylinder 351, and the supply and extraction pipe 352 communicates with the inner cavity of the pressure sleeve 353 fixedly connected to the receiving cylinder 351. The supply and extraction pipe 352 is externally connected to an air pump (not shown in the figure). The air pump serves as a pressure air source to supply and extract air into the pressure sleeve 353, so as to control the expansion and contraction of the pressure sleeve 353, thereby controlling the movement of the propulsion piston 34.

[0042] As Figure 1 , Figure 6 and Figure 7 shown, a discharge piston 13 is slidably disposed horizontally within the relay mixing chamber 11. A discharge cylinder 14 for driving the discharge piston 13 to move is fixedly provided on the raw material mixing tank 1. The docking hole 111 is located at the top of one end of the relay mixing chamber 11 away from the discharge cylinder 14. The radial dimension of the suction filling cylinder 41 is larger than the aperture of the docking hole 111. The lower end of the suction filling cylinder 41 is coaxially fixedly connected and communicated with a mating insertion tube 411. The diameter of the mating insertion tube 411 is smaller than the aperture of the docking hole 111. The end of the suction piston 42 is integrally formed coaxially with a mating core rod 421 that can be inserted into the mating insertion tube 411. When the suction filling cylinder 41 and the docking hole 111 are aligned, the mating insertion tube 411 also faces the docking hole 111. At this time, when the suction filling cylinder 41 moves downward, the mating insertion tube 411 can pass through the closing valve 112 and be inserted into the relay mixing chamber 11. At this time, the suction filling cylinder 41 and the docking hole 111 are completed for docking, and the suction filling cylinder 41 communicates with the inner cavity of the relay mixing chamber 11. When the suction piston 42 moves upward, the discharge piston 13 moves toward the mating insertion tube 411, and the adsorbent mixture within the relay mixing chamber 11 can be sucked into the suction filling cylinder 41. The discharge piston 13 moves to the end point of the stroke. At this time, the opposite side walls of the mating insertion tube 411 can be simultaneously abutted against the inner end wall of the relay mixing chamber 11 and the discharge piston 13, and most of the adsorbent mixture within the relay mixing chamber 11 is sucked by the suction filling cylinder 41.

[0043] Working process of this embodiment: During filling, the raw material mixing tank 1 stirs the adsorbent mixture inside it with a stirrer 2. During this process, the material passing pores 31 remain open, and the adsorbent mixture can freely enter and exit the capture supply pipe 3; then the introduction of nitrogen is stopped, and at the same time, the control component 33 controls the opening and closing cylinder shell 32 to close the material passing pores 31, and the internal space of the capture supply pipe 3 is relatively isolated from the raw material mixing tank 1. At this time, the propulsion piston 34 moves, pushing the mixture in the capture supply pipe 3 into the relay mixing bin 11, and the propulsion piston 34 stays at the connection position between the relay mixing bin 11 and the capture supply pipe 3, so that the relay mixing bin 11 and the capture supply pipe 3 are also isolated from each other. Then the suction filling cylinder 41 moves and docks with the relay mixing bin 11, the suction piston 42 moves, extracting most of the adsorbent mixture in the relay mixing bin 11, and then the moving component 43 moves the suction filling cylinder 41 above the adsorbent column housing 5 and stops. The adsorbent particles in the suction filling cylinder 41 gradually sink under the action of gravity, and the mixture inside it gradually stratifies, forming an upper water layer and a lower particle layer, and most of the adsorbent particles are located in the particle layer; the suction piston 42 moves downward, and the particle layer can be discharged from the suction filling cylinder 41 into the adsorbent column housing 5. After the particle layer is extruded, the suction filling cylinder 41 docks with the relay mixing bin 11 again. At the same time, the discharge piston 13 resets, the propulsion piston 34 resets, and the material passing pores 31 open again. The suction filling cylinder 41 discharges the water layer into the relay mixing bin 11 and finally flows into the raw material mixing tank 1, and a single filling process ends.

[0044] Although the embodiments of the present invention have been shown and described above, it can be understood that the above textual description and the content of the drawings of the above embodiments are both exemplary, aiming to explain the inventive concept of the present invention, and should not be construed as a limitation to the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention; based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

Claims

1. A filling device for a blood purification adsorbent, comprising a raw material mixing tank (1) and a transfer mechanism (4). A stirrer (2) and a capture supply pipe (3) are arranged on the raw material mixing tank (1). The capture supply pipe (3) is communicated with the raw material mixing tank (1). The transfer mechanism (4) includes a moving component (43) and a suction filling cylinder (41). A suction piston (42) is slidably arranged in the suction filling cylinder (41). The moving component (43) is used to control the movement of the suction filling cylinder (41). The suction filling cylinder (41) and the capture supply pipe (3) are selectively communicated. Characterized in that, There are multiple capture supply pipes (3). The multiple capture supply pipes (3) are arranged radially along the raw material mixing tank (1). The length direction of the capture supply pipe (3) is parallel to the axial direction of the raw material mixing tank (1). Material passing pores (31) are formed on the pipe wall of the capture supply pipe (3). The length direction of the material passing pores (31) is consistent with the length direction of the capture supply pipe (3). The inner cavity of the capture supply pipe (3) is communicated with the inner cavity of the raw material mixing tank (1) through the material passing pores (31). An opening and closing member is movably arranged on the capture supply pipe (3). The opening and closing member is used to control the opening or closing of the material passing pores (31).

2. The filling device for a blood purification adsorbent according to claim 1, characterized in that, The stirrer (2) includes a central axis fixed pipe (21) and a dispersion gas pipe (22). The central axis fixed pipe (21) is fixedly connected to the raw material mixing tank (1) coaxially. The dispersion gas pipe (22) is fixedly connected to the side wall of the raw material mixing tank (1). The inner cavity of the dispersion gas pipe (22) is communicated with the inner cavity of the central axis fixed pipe (21). The central axis fixed pipe (21) is connected to a nitrogen gas source. Multiple air injection holes (23) are formed on the side wall of the dispersion gas pipe (22).

3. The filling device for a blood purification adsorbent according to claim 2, characterized in that, There are multiple dispersion gas pipes (22). The multiple dispersion gas pipes (22) are arranged in a circumferential array along the central axis fixed pipe (21). All the air injection holes (23) are arranged in a circumferential array along the raw material mixing tank (1). A pulse air injection pipe (24) is fixedly connected to the dispersion gas pipe (22) at the position of the air injection holes (23). The nozzle of the pulse air injection pipe (24) is inclined towards the bottom and tangentially of the raw material mixing tank (1).

4. A filling device for a blood purification adsorbent according to claim 2 or 3, characterized in that, There are two material passing pores (31) on a single capture supply pipe (3). The opening positions of the two material passing pores (31) are symmetrically arranged with respect to the axis of the capture supply pipe (3). The opening and closing member is an opening and closing cylinder shell (32). The opening and closing cylinder shell (32) is coaxially sleeved outside the capture supply pipe (3). The inner wall of the opening and closing cylinder shell (32) is in contact with the outer wall of the capture supply pipe (3). The circumferential width of the opening and closing cylinder shell (32) is greater than the width of the material passing pores (31). A control component (33) for controlling the rotation of the opening and closing cylinder shell (32) is arranged on the raw material mixing tank (1).

5. The filling device for a blood purification adsorbent according to claim 4, characterized in that, The control component (33) includes a control cylinder (331), a control gear (332), and a control rack (333). The control gear (332) is fixedly connected coaxially with the opening and closing cylinder shell (32). The control rack (333) is slidably connected to the raw material mixing tank (1). The control gear (332) meshes with the control rack (333). The control cylinder (331) is fixedly connected to the raw material mixing tank (1), and the piston rod of the control cylinder (331) is fixedly connected to the control rack (333).

6. The filling device for a blood purification adsorbent according to claim 4, wherein A relay mixing bin (11) is fixedly connected to the raw material mixing tank (1). The relay mixing bin (11) is simultaneously communicated with one end of all the collection supply pipes (3). A docking hole (111) is formed in the relay mixing bin (11). The docking hole (111) is used for docking and cooperating with the barrel mouth of the suction filling cylinder (41). A sealing valve flap (112) is fixedly connected to the hole wall of the docking hole (111). In the natural state, the sealing valve flap (112) blocks the docking hole (111). An air pressure balance pipe (12) is fixedly connected and communicated with the relay mixing bin (11). A one-way valve (121) is arranged on the air pressure balance pipe (12). The one-way valve (121) allows the gas in the relay mixing bin (11) to flow out of the relay mixing bin (11).

7. The filling device for a blood purification adsorbent according to claim 6, characterized in that, A propulsion piston (34) is slidably arranged in the collection supply pipe (3). When the material passing pore (31) is open, the propulsion piston (34) is located at the end of the collection supply pipe (3) away from the relay mixing bin (11). A driving component (35) for driving the propulsion piston (34) to move is arranged on the raw material mixing tank (1).

8. The filling device for a blood purification adsorbent according to claim 7, characterized in that, The driving component (35) includes a receiving cylinder (351), a suction and supply pipe (352), and a plurality of pressure sleeves (353). The receiving cylinder (351) is fixedly connected to the raw material mixing tank (1) and coaxially communicated with the end of the collection supply pipe (3) away from the relay mixing bin (11). The plurality of pressure sleeves (353) are sleeved with each other in sequence. Adjacent pressure sleeves (353) axially slide relative to each other. The pressure sleeves (353) at both ends are respectively fixedly connected to the inner end wall of the receiving cylinder (351) and the propulsion piston (34). The suction and supply pipe (352) is communicated with the inner cavity of the pressure sleeve (353). One end of the suction and supply pipe (352) away from the pressure sleeve (353) is connected to a pressure air source.

9. The filling device for a blood purification adsorbent according to claim 6, characterized in that, The axes of the suction filling cylinder (41) and the docking hole (111) are both in the vertical direction. A discharge piston (13) is slidably arranged horizontally in the relay mixing bin (11). A discharge cylinder (14) for driving the discharge piston (13) to move is fixedly arranged on the raw material mixing tank (1). The docking hole (111) is located at the top of the end of the relay mixing bin (11) away from the discharge cylinder (14).

10. A filling device for a blood purification adsorbent according to claim 9, characterized in that, The lower end of the suction filling cylinder (41) is coaxially fixedly connected and communicated with a mating insertion tube (411). The end of the suction piston (42) is coaxially fixedly connected with a mating core rod (421) that can be inserted into the mating insertion tube (411). When the suction filling cylinder (41) is docked with the docking hole (111), the mating insertion tube (411) passes through the docking hole (111) and is inserted into the relay mixing chamber (11). Opposite side walls of the mating insertion tube (411) can be simultaneously and oppositely abutted by the inner end wall of the relay mixing chamber (11) and the discharge piston (13).

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