Multi-head filling machine for hemodialysis dry powder

Abstract

The invention belongs to the technical field of multi-head filling of dry powder, and discloses a multi-head filling machine for hemodialysis dry powder, which comprises a filling machine body and a filling part, the filling machine body is fixedly connected with three filling pipes for blanking, and the filling part is fixedly connected with the filling machine body. The filling part comprises three double-pipe material heads which can be correspondingly and movably connected with the filling pipes in a sleeving manner; through passive 180-degree rotation of a double-pipe stub bar, an elastic structure formed by automatically switching a blocked one-way stub bar, a rubber ring and a folding curtain, one-way dry powder is controlled to flow, backflow or pollution is prevented, normal discharging on the other side is utilized, jet flow of mixed hot gas and liquid is sprayed through a spray pipe, the blocked pipe wall is subjected to rotary stamping cleaning, the cleaning efficiency is improved, and the cleaning effect is good. After cleaning, the second electric telescopic rod is switched to a gas suction mode, the heated gas dries residual liquid through the spray pipe, preparation is made for subsequent dry powder discharging, and secondary pollution is avoided.

Description

Technical Field

[0001] This invention belongs to the field of dry powder multi-head filling technology, specifically a multi-head filling machine for hemodialysis dry powder. Background Technology

[0002] Hemodialysis is one of the renal replacement therapies for patients with acute and chronic renal failure. It involves draining blood from the body and passing it through a dialyzer composed of numerous hollow fibers. The blood exchanges substances with an electrolyte solution containing a concentration similar to that in the body through diffusion, ultrafiltration, adsorption, and convection principles inside and outside the hollow fibers. This process removes metabolic waste, maintains electrolyte and acid-base balance, removes excess water, and then returns the purified blood to the body. Hemodialysis is a process in which hemodialysis dry powder needs to be prepared into a concentrated solution before use. Currently, multi-head filling machines typically employ negative pressure filling technology. This technology uses negative pressure difference to guide the material into the metering chamber, and a metering pump quantitatively inputs the dry powder for filling. During the production and processing of hemodialysis dry powder (sodium bicarbonate), the ambient humidity needs to be maintained at around 40%. If the ambient humidity exceeds this level (>60%), and considering that hemodialysis dry powder is a mixture of various inorganic salts (such as sodium chloride, sodium bicarbonate, and potassium chloride), it is highly hygroscopic and prone to caking. Once it comes into contact with trace amounts of moisture in the air, the powder will agglomerate into small particles or lumps, easily accumulating and clogging when passing through the narrow outlet of the filling head. Simultaneously, static electricity is generated during the conveying and filling process, adsorbing onto the inner wall of the filling head. Over time, this accumulation narrows the outlet channel, further exacerbating the risk of clogging and causing intermittent flow interruptions or insufficient dosage. Cleaning the blockage requires manual disassembly and cleaning after the machine is stopped, delaying processing and filling efficiency. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides a multi-head filling machine for hemodialysis dry powder.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-head filling machine for hemodialysis dry powder, comprising a filling machine body and a filling section. The filling machine body is fixedly connected with three filling tubes for feeding. The filling section includes three double-tube feed heads that can be movably sleeved with each of the filling tubes respectively. Each double-tube feed head is provided with an elastic opening and closing structure for controlling the unidirectional dry powder flow of each double-tube feed head. The lower side of the filling machine body is provided with multiple power transmission structures for driving each double-tube feed head and rotating the elastic opening and closing structure 180 degrees respectively. Each power transmission structure is also provided with a cleaning structure for handling unidirectional feed head blockage of the double-tube feed head. Each of the cleaning structures includes a piston rod and a piston cylinder that is slidably connected to it. A T-shaped cylinder is slidably connected to the top of the piston cylinder. An arc groove is formed through the body of the T-shaped cylinder, and a ball rod is slidably connected to the inner wall of the arc groove. A nozzle is fixedly connected to the body of the ball rod and rotatably connected to the inner wall of the T-shaped cylinder.

[0005] Preferably, the elastic opening and closing structure includes a rubber ring fixedly connected to the inner wall of the tubes on both sides of the double tube head, a folding curtain fixedly connected to the inner wall of the top of the rubber ring, and both folding curtains can be freely folded and extended on the inner wall of the corresponding rubber ring, and a sliding plate is attached to the outer wall of one end of each of the two folding curtains.

[0006] Preferably, ear plates are fixedly connected to both ends of the two moving plates in opposite symmetrical manner. The two upper ear plates are respectively fixedly connected to the two sides of the double tube head with springs, and the two lower ear plates are respectively fixedly connected to the bottom end of the two folding curtains. The plates of the two moving plates are slidably connected to the two sides of the double tube head.

[0007] Preferably, the power transmission structure includes a machine plate fixedly connected to the filling machine body, a motor fixedly connected to the bottom plate of the machine plate, a rotating drum fixedly connected to the output shaft of the motor, a timing belt fixedly connected to the bottom cylinder of the rotating drum, an electric telescopic rod fixedly connected to the filling machine body, and the other side of the timing belt is rotatably connected to the filling tube, and a connecting rod is fixedly connected between the bottom end of the tooling wheel on the other side of the timing belt and the outer walls of the tubes on both sides of the double tube head.

[0008] Preferably, a slanted slide is provided under the tooling wheel on the other side of the synchronous belt. The slanted slide can be intermittently slidably connected to the top of the two moving plates. A U-shaped rod is fixedly connected between the outer wall of the slanted slide and the outer wall of the filling tube.

[0009] Preferably, the cleaning structure further includes a collar fixedly connected to an electric telescopic rod, and a sleeve fixedly connected to the collar. The top end of the sleeve can be intermittently and slidably connected to the outer wall of the unidirectional material head of the double-tube material head.

[0010] Preferably, an electric telescopic rod two is fixedly connected to the inner wall of the bottom end of the sleeve, and a protective cover that is slidably connected to the movable end of the electric telescopic rod two is also fixedly connected to the inner wall of the bottom end of the sleeve. The movable end of the electric telescopic rod two is also fixedly connected to the bottom end of the piston rod.

[0011] Preferably, a water pipe and a gas pipe are respectively fixedly connected through the outer surface of the piston cylinder, and a one-way valve for controlling the unidirectional flow of liquid and gas is fixedly connected to the pipe body of both the water pipe and the gas pipe. The gas pipe is composed of two pipe bodies with different diameters, and multiple PTC heating plates are fixedly connected in a cross-sloping manner to the inner walls of both ends of the larger diameter pipe body.

[0012] Preferably, the water pipe and air pipe are respectively connected to the two ends of the sleeve in a through-hole fixed connection, a positioning plate rod is fixedly connected to the top end of the piston cylinder, the plate of the positioning plate rod is movably sleeved with the pipe body of the nozzle, and a sensor is fixedly connected to the top end of the positioning plate rod.

[0013] Preferably, an L-shaped rod plate is fixedly connected to the piston rod body, and the vertical plate of the L-shaped rod plate can be intermittently fitted and slidably connected to the inner wall of the piston cylinder and the opening of the water pipe. An inclined panel is fixedly connected between the cover body and the bottom inner wall of the sleeve of the protective cover, and a guide pipe is fixedly connected through the outer wall of the sleeve near the bottom.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses the passive 180-degree rotation of the dual-tube feed head to automatically switch the blocked unidirectional feed head. The elastic structure composed of the rubber ring and the folding curtain controls the unidirectional flow of dry powder, preventing backflow or contamination, and uses the other side to feed normally, ensuring a seamless connection of the filling process and significantly improving the overall efficiency of the equipment. When blockage occurs, the PLC system activates the cleaning structure via a linked motor. The jet of mixed hot gas and liquid is sprayed through the nozzle to rotate and press the blocked pipe wall, improving cleaning efficiency. Furthermore, the cleaning process of the blocked filling head is completely isolated from the filling head that is currently performing the filling operation. The flushing waste liquid can be collected and treated separately by an external collection device, eliminating the need for manual disassembly and cleaning of the filling head.

[0015] After cleaning, the electric telescopic rod switches to gas suction mode. The heated gas dries the residual liquid through the nozzle, preparing for the subsequent dry powder feeding and avoiding secondary pollution. This is superior to traditional direct current water washing. The repeatedly rotating jet evenly impacts the inner wall of the pipe, resulting in a more thorough cleaning. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at point A in the middle; Figure 4This is a schematic diagram of the disassembled structure of the folding curtain and the sliding panel of the present invention; Figure 5 This is a partial structural diagram of the filling section of the present invention; Figure 6 This is a partial cross-sectional structural diagram of the filling section of the present invention; Figure 7 For the present invention Figure 6 A magnified schematic diagram of the structure at point B in the middle; Figure 8 This is a schematic cross-sectional planar structure diagram of the protective cover and piston cylinder of the present invention; Figure 9 This is a schematic diagram of the complete structure of the arc groove and ball stick of the present invention.

[0017] In the picture: 1. Filling machine body; 101. Filling pipe; 2. Filling section; 201. Machine plate; 202. Motor; 203. Rotary drum; 204. Synchronous belt; 205. Double-pipe feed head; 206. Connecting rod; 207. Rubber ring; 208. Folding curtain; 209. Transfer plate; 210. Ear plate; 211. Spring; 212. Slanted slide plate; 213. U-shaped rod; 214. Electric telescopic rod one; 215. Collar; 216. Sleeve; 217. Electric telescopic rod two; 218. Protective cover; 219. Piston rod; 220. Piston cylinder; 221. Water pipe; 222. Air pipe; 223. One-way valve; 224. T-shaped cylinder; 225. Arc slide groove; 226. Ball rod; 227. Spray pipe; 228. Positioning plate rod; 229. L-shaped rod plate; 230. Slanted panel; 231. Guide pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 9As shown, the present invention provides a multi-head filling machine for hemodialysis dry powder, including a filling machine body 1 and a filling section 2. The filling machine body 1 is fixedly connected with three filling tubes 101 for feeding. The filling section 2 includes three double-tube feed heads 205 that can be rotatably connected to each filling tube 101 respectively. Each double-tube feed head 205 is composed of two tubes. Each double-tube feed head 205 is provided with an elastic opening and closing structure for controlling the unidirectional dry powder flow of each double-tube feed head 205. The lower side of the filling machine body 1 is provided with multiple power transmission structures for driving each double-tube feed head 205 and rotating the elastic opening and closing structure 180 degrees respectively. Each power transmission structure is also provided with a cleaning structure for handling unidirectional feed head blockage of the double-tube feed head 205. The elastic opening and closing structure includes rubber rings 207 fixedly connected to the inner walls of the tubes on both sides of the double tube head 205. Folding curtains 208 are fixedly connected to the inner wall of the top of the rubber rings 207, and both folding curtains 208 can be freely folded and extended on the inner walls of the corresponding rubber rings 207. A sliding plate 209 is slidably connected to one end of the outer wall of each of the two folding curtains 208. Ear plates 210 are fixedly connected to both ends of the sliding plate 209 in opposite symmetrical ways. There are four ear plates 210. The two ear plates 210 located at the top are fixedly connected to the double tube head 205 with springs 211. The two ear plates 210 located at the bottom are fixedly connected to the curtains of the two folding curtains 208 near their bottom. The two tubes on both sides of the double tube head 205 are provided with sliding grooves that can be slidably connected to the two sliding plates 209 respectively. It should be noted that the reference Figure 3 As shown, the inner wall of the rubber ring 207 has a circular groove, and the folding curtain 208 is embedded in the circular groove. The folding curtain 208 is made of medical-grade silicone rubber, and its surface has been fluorinated. The dialysis dry powder cannot form effective adsorption and will slide off on its own, thus reducing powder residue from the source.

[0020] The power transmission structure includes a machine plate 201 fixedly connected to the filling machine body 1. A metering pump for controlling the amount of dry powder fed is installed at one end of the filling machine body 1 near the dual-tube feed head 205. The metering pump is an existing structure. A motor 202 is fixedly connected to the bottom plate of the machine plate 201, and a rotating drum 203 is fixedly connected to the output shaft of the motor 202. A synchronous belt 204 is fixedly connected to the bottom cylinder of the rotating drum 203. A support rod is fixedly connected to the filling machine body 1, and an electric telescopic rod 214 is fixedly connected to the support rod. The synchronous belt 204 is located away from the electric telescopic rod 214. The tooling wheel 4 is rotatably connected to the body of the filling tube 101. The two tooling wheels are connected by a belt for close-fitting transmission. The bottom of the tooling wheel on the filling tube 101 in the synchronous belt 204 is connected to the outer wall of the tube on both sides of the double tube head 205 by a connecting rod 206. The tooling wheel on the filling tube 101 in the synchronous belt 204 is provided with a sloping slide plate 212. The sloping surface of the sloping slide plate 212 can be intermittently connected to the top of the two moving plates 209. The outer wall of the sloping slide plate 212 is connected to the outer wall of the tube 101 by a U-shaped rod 213.

[0021] The above solution is adopted: such as Figure 3 As shown, during the rotation of the passively rotating double-tube feed head 205, the shift plate 209, which is squeezed by the inclined slide plate 212, will disengage from the inclined slide plate 212. At that time, the spring 211 installed on the ear plate 210 above the shift plate 209 will no longer be under force and will automatically elastically reset, causing the shift plate 209 to move upward. The passively moving shift plate 209 will then pass through the lower ear plate 210 and together drive the connected folding curtain 208 to fold, so that the folding curtain 208 does not completely block the rubber ring 207, thereby replacing the double-tube feed head 205 (one-way feed head) that has a blockage problem. Initially, the double tube extends out over a large area. During the passive rotation of the conveyor plate 209 of the material head 205, it slides into contact with the inclined slide plate 212 fixed on the U-shaped rod 213. Due to the inclination of the inclined slide plate 212, it is passively rotated and moved downward, causing the previously passively folded curtain 208 to extend and cover the sealing rubber ring 207 through the lower ear plate 210. This facilitates the subsequent opening of the inner wall without affecting the normal material feeding and filling operation of the other tube head of the double tube material head 205. As a result, the filling machine body 1 does not need to be stopped, and the filling process is seamlessly connected. This avoids the shutdown caused by clearing blockages in the traditional single tube system and significantly improves the overall efficiency of the equipment.

[0022] The above solution involves a dual-tube feed head 205 that receives material from filling tube 101. When sodium bicarbonate powder absorbs moisture and clumps due to environmental factors, causing blockage of the inner diameter of the feed head 205 and resulting in intermittent flow interruption or insufficient dosage, a metering pump, which is essential on the filling machine body 1 in existing technology, monitors the powder discharge status in real time. In case of an anomaly, the pump is linked to the motor 202 installed on the PLC intelligent starter board 201 of the control system. Figure 2 and Figure 3 As shown, the motor 202 drives the drum 203 to rotate and, through one of the hollow pulleys, in conjunction with the synchronous belt 204, drives the hollow pulley near the filling tube 101 to perform transmission simultaneously. This, through two connecting rods 206 fixed on the bottom of one side of the synchronous belt 204, drives the double tube head 205 to rotate passively by 180 degrees, thereby replacing the unidirectional head that is blocked inside the double tube head 205, and using the other unidirectional head to continue normal feeding and filling.

[0023] Each cleaning structure includes a piston rod 219 and a piston cylinder 220 that is slidably connected to the piston rod 219. The bottom of the piston cylinder 220 is open and unclosed. A T-shaped cylinder 224 is slidably connected to the top of the piston cylinder 220. An arc groove 225 is opened through the cylinder body of the T-shaped cylinder 224, and a ball rod 226 is slidably connected to the inner wall of the arc groove 225. A nozzle 227 is rotatably connected to the inner wall of the T-shaped cylinder 224. The nozzle 227 and the rod body of the ball rod 226 are fixedly connected. The cleaning structure also includes a collar 215 fixedly connected to the electric telescopic rod 214. A sleeve 216 is fixedly connected to the collar 215. The top end of the sleeve 216 can intermittently slide and fit against the outer wall of the unidirectional feed head of the double-tube feed head 205. An electric telescopic rod 217 is fixedly connected to the inner wall of the bottom end of the sleeve 216. A protective cover 218 is also fixedly connected to the inner wall of the bottom end of the sleeve 216 and slides through it. The movable end of the electric telescopic rod 217 is also fixedly connected to the bottom end of the piston rod 219. A water pipe 221 and an air pipe 222 are fixedly connected through the outer surface of the piston cylinder 220. Control devices for liquid and gas inlet are fixedly connected to the pipes of both the water pipe 221 and the air pipe 222. The one-way valve 223 is for unidirectional flow. The air pipe 222 is composed of two pipes with different diameters. Multiple PTC heating plates are fixedly connected to the inner walls of the larger diameter pipe at both ends in a cross-shaped inclination. The pipes of the water pipe 221 and the air pipe 222 pass through the outer surfaces of both ends of the sleeve 216 and are fixedly connected to the cylinder of the sleeve 216. A positioning plate rod 228 is fixedly connected to the top cylinder of the piston cylinder 220. The plate of the positioning plate rod 228 is movably sleeved with the pipe of the nozzle 227. A sensor is fixedly connected to the top plate of the positioning plate rod 228. An L-shaped rod plate 229 is fixedly connected to the rod of the piston rod 219. The vertical plate of the L-shaped rod plate 229 can intermittently slide and fit against the inner wall of the piston cylinder 220 and the opening of the water pipe 221. An inclined panel 230 is fixedly connected between the cover body of the protective cover 218 and the bottom inner wall of the sleeve 216, and a guide pipe 231 is fixedly connected through the outer wall of the sleeve 216 near the bottom.

[0024] Using the above scheme: After the synchronous belt 204 drives the double-tube feed head 205 to complete a 180-degree rotation, the control system PLC will immediately drive the movable end of the electric telescopic rod 214 to retract, thereby driving the sleeve 216 connected by the collar 215 to move upward synchronously, thus making contact with the replaced double-tube feed head 205 (one-way feed head) with blockage problems. During the passive upward movement of the sleeve 216, the nozzle 227 will also move upward and probe into the double-tube feed head 205 with blockage problems or that needs cleaning. The positioning plate rod 228 will be forced to approach the opening of the double-tube feed head 205, so that the sensor installed on the positioning plate rod 228, after approaching the metal material, will automatically drive the electric telescopic rod 217 inside the protective cover 218 to extend its movable end. Figure 8 As shown, this causes the piston rod 219 to reciprocate within the lower half of the piston cylinder 220. Through negative pressure, liquid and gas are drawn directly through the water pipe 221 and the air pipe 222. The gas entering the air pipe 222 is deflected as it passes through multiple intersecting PTC heating plates, causing repeated contact with the electrically heated PTC plates, thus heating the gas. The piston rod 219 then compresses the mixture of hot gas and liquid within the piston cylinder 220, forcing it into the T-shaped cylinder 224 and finally exiting through the nozzle 22. When the liquid is sprayed out from the T-shaped cylinder 224, it will be pushed upward in the piston cylinder 220 when it feels the impact of the liquid and the extrusion pressure. After passing through the arc groove 225 opened on the T-shaped cylinder 224, it will drive the nozzle 227, which is fixed with the ball rod 226, to rotate at the origin on the positioning plate rod 228. Through the repeated piston movement mentioned above, the nozzle 227, which is rotating, performs internal flushing and cleaning on the blocked double tube head 205. The passive rotation of the nozzle 227 will cause the jet to impact the inner wall of the pipe evenly through the tangential force, which improves the cleaning efficiency and is superior to direct flow water washing.

[0025] like Figure 8As shown, after cleaning the pipe blockage, the electric telescopic rod 217, programmed by the PLC system, extends its movable end upwards into the upper half of the piston cylinder 220 to reciprocate. This is the upper section of the cylinder, with the water pipe 221 as the dividing line. The piston's movement continuously drives the L-shaped rod plate 229 to block one end of the water pipe 221, causing the piston to draw in only gas under negative pressure. Meanwhile, the gas passing through the gas pipe 222, after being heated, is drawn into the nozzle 227 in the same manner. The liquid and gas enter the cleaned through-hole of the double-tube feed head 205 to dry the residual liquid and moisture, preparing for the subsequent dry powder feeding and filling. Since the nozzle 227 and the single tube head of the double-tube feed head 205 do not come into contact, there is a gap between them. Therefore, the water and gas entering the double-tube feed head 205 fall naturally into the sleeve 216. After the inclined angle of the inclined plate 230, the used water can be completely discharged into the sleeve 216 through the guide pipe 231.

[0026] One point that needs to be added is that the sensor installed on the positioning plate rod 228 is an inductive proximity sensor. When it approaches a metal object, the sensor will output a signal to immediately activate the electric telescopic rod 217. This is existing technology and will not be elaborated on here. Water pipe 221, air pipe 222 and diversion pipe 231 are all connected to corresponding existing supply equipment (such as water storage tank, air storage tank) and diversion treatment equipment, that is, equipment for discharging water. The outer wall of rubber ring 207 has been smoothed so as not to affect the feeding of dialysis dry powder or the active adhesion of dialysis dry powder.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-head filling machine for hemodialysis dry powder, comprising a filling machine body (1) and a filling section (2), characterized in that: The filling machine body (1) is fixedly connected with three filling tubes (101) for feeding. The filling part (2) includes three double tube heads (205) that can be movably connected to each filling tube (101). Each double tube head (205) is provided with an elastic opening and closing structure to control the unidirectional dry powder flow of each double tube head (205). The filling machine body (1) is provided with multiple power transmission structures on the lower side for driving each double tube head (205) and rotating the elastic opening and closing structure 180 degrees. Each power transmission structure is also provided with a cleaning structure for clogging the unidirectional head of the double tube head (205). Each of the cleaning structures includes a piston rod (219) and a piston cylinder (220) that is slidably connected to it. A T-shaped cylinder (224) is slidably connected to the top of the piston cylinder (220). An arc groove (225) is provided through the cylinder body of the T-shaped cylinder (224), and a ball rod (226) is slidably connected to the inner wall of the arc groove (225). A nozzle (227) that is rotatably connected to the inner wall of the T-shaped cylinder (224) is fixedly connected to the body of the ball rod (226).

2. The multi-head filling machine for hemodialysis dry powder according to claim 1, characterized in that: The elastic opening and closing structure includes a rubber ring (207) fixedly connected to the inner wall of the tubes on both sides of the double tube head (205). A folding curtain (208) is fixedly connected to the inner wall of the top of the rubber ring (207), and both folding curtains (208) can be freely folded and extended on the inner wall of the corresponding rubber ring (207). A sliding plate (209) is attached and slidably connected to the outer wall of one end of each of the two folding curtains (208).

3. The multi-head filling machine for hemodialysis dry powder according to claim 2, characterized in that: Two ear plates (210) are fixedly connected to the two end plates of the two moving plates (209) in opposite symmetrical manner. The two ear plates (210) located above are respectively fixedly connected to the two sides of the double tube head (205) with springs (211). The two ear plates (210) located below are respectively fixedly connected to the curtain body of the two folding curtains (208) near their bottom. The plates of the two moving plates (209) are slidably connected to the two sides of the double tube head (205).

4. The multi-head filling machine for hemodialysis dry powder according to claim 1, characterized in that: The power transmission structure includes a machine plate (201) fixedly connected to the filling machine body (1). A motor (202) is fixedly connected to the bottom plate of the machine plate (201), and a rotating drum (203) is fixedly connected to the output shaft of the motor (202). A synchronous belt (204) is fixedly connected to the bottom cylinder of the rotating drum (203). An electric telescopic rod (214) is fixedly connected to the filling machine body (1). The other side of the synchronous belt (204) is rotatably connected to the filling tube (101), and a connecting rod (206) is fixedly connected between the bottom end of the tooling wheel on the other side of the synchronous belt (204) and the outer walls of the tubes on both sides of the double tube head (205).

5. The multi-head filling machine for hemodialysis dry powder according to claim 4, characterized in that: The other side of the synchronous belt (204) is provided with a slanted slide plate (212) under the tool wheel. The slanted surface of the slanted slide plate (212) can be intermittently connected to the top of the two moving plates (209). A U-shaped rod (213) is fixedly connected between the outer wall of the slanted slide plate (212) and the outer wall of the filling tube (101).

6. The multi-head filling machine for hemodialysis dry powder according to claim 1, characterized in that: The cleaning structure also includes a collar (215) fixedly connected to an electric telescopic rod (214), and a sleeve (216) fixedly connected to the collar (215). The top cylinder of the sleeve (216) can be intermittently fitted and slidably connected to the outer wall of the unidirectional material head of the double tube material head (205).

7. The multi-head filling machine for hemodialysis dry powder according to claim 6, characterized in that: An electric telescopic rod two (217) is fixedly connected to the inner wall of the bottom end of the sleeve (216). A protective cover (218) that is slidably connected to the movable end of the electric telescopic rod two (217) is also fixedly connected to the inner wall of the bottom end of the sleeve (216). The movable end of the electric telescopic rod two (217) is also fixedly connected to the bottom end of the piston rod (219).

8. The multi-head filling machine for hemodialysis dry powder according to claim 7, characterized in that: Water pipe (221) and air pipe (222) are respectively fixedly connected through the outer surface of the piston cylinder (220). One-way valves (223) for controlling the unidirectional flow of liquid and gas are fixedly connected to the pipe bodies of the water pipe (221) and the air pipe (222). The air pipe (222) is composed of two pipe bodies with different diameters. Multiple PTC heating plates are fixedly connected in a cross-sloping manner to the inner walls of both ends of the larger diameter pipe body.

9. The multi-head filling machine for hemodialysis dry powder according to claim 8, characterized in that: The pipe bodies of the water pipe (221) and the air pipe (222) are respectively connected to the two ends of the sleeve (216) in a fixed manner. A positioning plate rod (228) is fixedly connected to the top end of the piston cylinder (220). The plate body of the positioning plate rod (228) and the pipe body of the nozzle (227) are movably sleeved. A sensor is fixedly connected to the top end of the positioning plate rod (228).

10. The multi-head filling machine for hemodialysis dry powder according to claim 9, characterized in that: An L-shaped rod plate (229) is fixedly connected to the rod body of the piston rod (219). The vertical plate of the L-shaped rod plate (229) can be intermittently fitted and slidably connected to the inner wall of the piston cylinder (220) and the opening of the water pipe (221). An inclined panel (230) is fixedly connected between the cover body of the protective cover (218) and the bottom inner wall of the sleeve (216), and a guide pipe (231) is fixedly connected through the outer wall of the sleeve (216) near the bottom.

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