A filtering device for producing hemodialysis concentrate

Abstract

The application discloses a filtering device for producing hemodialysis concentrate, which comprises a mixing unit for mixing raw materials, a filtering unit, a filtering assembly arranged on one side of the mixing unit and used for filtering the solution mixed by the mixing unit, and a discharging assembly arranged at the lower end of the filtering assembly and used for discharging the filtered impurities. The filter core part is driven by the push rod to reciprocate along the inside of the guide groove under the reverse thrust of the return spring, so that the filter core part drives the filter hole to reciprocate along the inside of the filtering pipe. When the filter core part swings, the filter core part drives the sealing roller to rotate, so that the impurities below the filter hole are pressed flat by the sealing roller and scraped off at the scraping plate. The impurities clamped in the filter hole are flushed out by the sterile water sprayed by the spraying port when moving directly below the spraying port, and are discharged into the collecting frame along the discharge pipe together with the scraped impurities, so that the filter core does not need to be replaced repeatedly, and the filtering efficiency is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hemodialysis concentrate production, in particular to a filtering device for hemodialysis concentrate production. BACKGROUND

[0002] The hemodialysis concentrate is composed of A concentrate and B concentrate, the A concentrate is composed of aqueous solution of sodium chloride, potassium chloride, calcium chloride, magnesium chloride and glacial acetic acid, and the B concentrate is composed of aqueous solution of sodium bicarbonate or sodium bicarbonate and sodium chloride, in the preparation process of the A concentrate, the raw material powder is mixed with water, then the mixed solution is introduced into the filtering system to filter the impurities in the solution, and finally the filtered mixed solution is filled, in the filtering process of the hemodialysis concentrate, it is very important to ensure that the hemodialysis concentrate is not contaminated by external bacteria.

[0003] However, during the filtering process of the concentrate, the filter core is easily blocked, so it is necessary to repeatedly take out and replace the filter core, in order to prevent the filter core from being contaminated by being exposed to the outside, the filter core is usually sealed in the filter, but every time the filter core needs to be replaced due to blockage, the filtering device is usually disassembled and the filter core is taken out, then the filter core is replaced, in the process of opening the filter, the bacteria outside the filter can easily invade the inside of the filter, so that the hemodialysis concentrate product quality cannot be guaranteed due to insufficient disinfection every time the filter core is replaced, and due to frequent replacement of the filter core, the continuous filtering of the concentrate cannot be guaranteed, and the filtering efficiency is low.

[0004] The above content is only used to assist in understanding the technical solutions of the present application, and does not represent the acknowledgement of the above content as the closest prior art. SUMMARY

[0005] The purpose of the present application is to provide a filtering device for hemodialysis concentrate production, to solve the problem of repeated replacement of the filter core in the filtering process of the existing concentrate.

[0006] To achieve the above purpose, the present application provides the following technical solutions:

[0007] A filtering device for hemodialysis concentrate production, comprising:

[0008] A mixing unit for mixing raw materials;

[0009] A filtering unit comprising a filtering assembly arranged on one side of the mixing unit for filtering the mixed solution of the mixing unit and a discharge assembly arranged at the lower end of the filtering assembly for discharging the filtered impurities.

[0010] Further, the filtering assembly comprises:

[0011] A filter pipe is connected with the mixing unit, and a guide groove is arranged in the filter pipe;

[0012] A containing frame is arranged in the middle of the filter pipe;

[0013] A discharge pipe is connected with the upper end of the filter pipe, and is used for discharging the filtered solution to the next process;

[0014] A filter core mechanism is arranged in the containing frame;

[0015] A scraping mechanism is arranged in the containing frame and is located below the filter core mechanism, and is used for cleaning the filter core mechanism;

[0016] Two groups of backflush mechanisms are arranged above the filter core mechanism, and are used for flushing the impurities in the filter core mechanism.

[0017] Further, the filter core mechanism comprises:

[0018] A second driving motor is arranged on one side of the containing frame, and a cam is connected with the upper end of the second driving motor and is located above the containing frame;

[0019] A filter core piece is slidingly inserted into the guide groove, a push rod is connected with the upper end of the filter core piece and is in contact with one side of the cam, a groove is arranged on the outer side of the push rod and is located in the containing frame, and a plurality of filter holes are arranged in the filter core piece;

[0020] A reset spring is connected with the side of the filter core piece opposite to the second driving motor, and is used for resetting the filter core piece;

[0021] Two groups of sealing blocks are connected with the upper end of the filter core piece, and are used for sealing the area below the backflush mechanism and above the filter core piece.

[0022] Further, the scraping mechanism comprises:

[0023] Two groups of top plates are connected with the bottom of the containing frame, and sealing rollers are rotatably connected with the upper end of the top plates and are in contact with the bottom of the filter core piece, and are used for sealing the area below the backflush mechanism and above the filter core piece.

[0024] Further, the scraping mechanism further comprises a scraping plate connected with the top plate and located on one side of the backflush mechanism, and is used for scraping the impurities at the lower end of the filter core piece;

[0025] The lower end of the filter core mechanism is provided with a groove, and the upper end of the scraping plate is in contact with the top of the groove.

[0026] Further, the backflush mechanism comprises:

[0027] Water inlet pipe, connected to the upper end of the containing frame;

[0028] Shunt groove, located inside the containing frame below the water inlet pipe;

[0029] Injection port, located inside the containing frame and connected to the lower end of the shunt groove, for flushing the filter hole directly below the injection port.

[0030] Further, the discharge assembly comprises:

[0031] Discharge pipe, provided with two groups, connected to the lower end of the containing frame, for discharging impurities after backwashing;

[0032] Converging pipe, connected to the discharge end of the discharge pipe, for converging impurities discharged by the two groups of discharge pipes;

[0033] Collection frame, located at the discharge port of the converging pipe, for collecting impurities discharged by the converging pipe.

[0034] Further, the mixing unit comprises:

[0035] Mixing barrel, located on one side of the filter assembly, with a feed hopper on the upper side, a discharge port at the lower end of the mixing barrel, and a connecting pipe connecting the discharge port to the filter assembly;

[0036] First drive motor, installed on the upper end of the mixing barrel, with a stirring paddle connected to the lower end and located inside the mixing barrel;

[0037] Baffle, slidingly inserted into the discharge port, with a guide plate on the outer side for guiding the baffle.

[0038] Compared with the prior art, the beneficial effects of the present application are:

[0039] The filter core is driven by the push rod to reciprocate along the guide groove under the reverse thrust of the return spring, so that the filter core drives the filter hole to reciprocate along the filter pipe. During the oscillation of the filter core, the sealing roller is rotated by the filter core, so that the impurities below the filter hole are pressed flat by the sealing roller and scraped off at the scraping plate. The impurities stuck in the filter hole are flushed out by the sterile water sprayed by the injection port when they move directly below the injection port, and are discharged along with the scraped impurities to the collection frame for collection, so that the filter core does not need to be replaced repeatedly, ensuring that the filtering work can continue, and the filtering efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 The whole structure of the present application is shown in the figure;

[0041] Figure 2 The internal structure of the mixing unit of the present application is shown in the figure;

[0042] Figure 3 The internal structure schematic diagram of the filter unit of the present application;

[0043] Figure 4 The enlarged view of A in the present application; Figure 3

[0044] Figure 5 The structure schematic diagram of the filter core mechanism of the present application;

[0045] Figure 6 The structure schematic diagram of the discharging assembly of the present application.

[0046] The figure mark: 1, the mixing unit; 11, mixing bucket; 12, first drive motor; 13, feed hopper; 14, stirring paddle; 15, discharge port; 16, baffle; 17, guide plate; 18, adapter pipe; 2, filter unit; 21, filter assembly; 22, discharging assembly; 211, filter tube; 212, containing frame; 2121, guide groove; 213, lead-out pipe; 214, filter core mechanism; 2141, second drive motor; 2142, cam; 2143, push rod; 2144, filter core piece; 21441, filter hole; 21442, recess; 2145, return spring; 2146, sealing block; 215, scraping mechanism; 2151, top plate; 2152, sealing roller; 2153, scraping plate; 216, backflush mechanism; 2161, water inlet pipe; 2162, shunt groove; 2163, injection port; 221, discharge pipe; 222, converging pipe; 223, collection frame. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0048] Embodiment one

[0049] Please refer to Figures 1-6 , the present application provides a technical solution:

[0050] A filter device for producing hemodialysis concentrate, comprising:

[0051] The mixing unit 1 is used for mixing raw materials;

[0052] The filter unit 2 comprises a filter assembly 21 arranged on one side of the mixing unit 1 for filtering the solution mixed by the mixing unit 1 and a discharging assembly 22 arranged at the lower end of the filter assembly 21 for discharging the filtered impurities.​

[0053] As an improvement, as shown in Figures 3-5 The filter assembly 21 comprises:

[0054] The filter pipe 211 is connected to the mixing unit 1, and a guide groove 2121 is arranged in the filter pipe 211.

[0055] The containing frame 212 is arranged in the middle of the filter pipe 211.

[0056] The export pipe 213 is connected to the upper end of the filter pipe 211, and is used to export the filtered solution to the next process.

[0057] The discharge end of the export pipe 213 preferably uses a water pump to pump out the solution in the export pipe 213.

[0058] The filter core mechanism 214 is slidably arranged in the containing frame 212.

[0059] The scraping mechanism 215 is arranged in the containing frame 212 and located below the filter core mechanism 214, and is used to clean the filter core mechanism 214.

[0060] The backflush mechanism 216 is arranged in two groups and located above the filter core mechanism 214, and is used to flush the impurities in the filter core mechanism 214.

[0061] Further, as shown in Figure 3 , Figure 5 The filter core mechanism 214 comprises:

[0062] The second driving motor 2141 is installed on one side of the containing frame 212, and a cam 2142 is connected to the upper end of the second driving motor 2141 and located above the containing frame 212.

[0063] The filter core piece 2144 is slidably inserted into the guide groove 2121, and a push rod 2143 is connected to the upper end of the filter core piece 2144 and in contact with one side of the cam 2142. A groove is arranged on the outer side of the push rod 2143 and located in the containing frame 212. A plurality of filter holes 21441 are arranged in the filter core piece 2144.

[0064] The reset spring 2145 is connected to the side of the filter core piece 2144 opposite to the second driving motor 2141, and is used to reset the filter core piece 2144.

[0065] The sealing block 2146 is arranged in two groups and connected to the upper end of the filter core piece 2144, and is used to close the area below the backflush mechanism 216 and above the filter pipe 211.

[0066] Further, as shown in Figures 4-5 The scraping mechanism 215 comprises:

[0067] A top plate 2151 is connected to the bottom of the containing frame 212, and a sealing roller 2152 is rotatably connected to the upper end of the top plate 2151 and in contact with the bottom of the filter core 2144, so as to close the filter tube 211 below the filter core 2144 and the area directly below the backflushing mechanism 216.

[0068] The sealing roller 2152 is preferably made of rubber.

[0069] As an improvement, the scraping mechanism 215 further comprises a scraping plate 2153 connected to the top plate 2151 on the side of the backflushing mechanism 216, so as to scrape the impurities at the lower end of the filter core 2144.

[0070] The lower end of the filter core mechanism 214 is provided with a groove 21442, and the upper end of the scraping plate 2153 is in contact with the top of the groove 21442.

[0071] Further, as shown in Figures 3-4 The backflushing mechanism 216 comprises:

[0072] A water inlet pipe 2161 is connected to the upper end of the containing frame 212.

[0073] A shunt groove 2162 is arranged below the water inlet pipe 2161 and inside the containing frame 212.

[0074] A jet port 2163 is arranged inside the containing frame 212 and in communication with the lower end of the shunt groove 2162, so as to flush the filter hole 21441 directly below the jet port 2163.

[0075] The water inlet pipe 2161 is in communication with a pipeline for sterile water during operation.

[0076] Further, as shown in Figure 6 The discharge assembly 22 comprises:

[0077] Two discharge pipes 221 are connected to the lower end of the containing frame 212, so as to discharge the impurities flushed by the backflushing mechanism 216.

[0078] A converging pipe 222 is connected to the discharge end of the discharge pipe 221, so as to converge the impurities discharged by the two discharge pipes 221.

[0079] A collection frame 223 is arranged at the discharge port 15 of the converging pipe 222, so as to collect the impurities discharged by the converging pipe 222.

[0080] It should be noted that the height of the mixing barrel 11 in the application is higher than the height of the top of the outlet pipe 213, which ensures that the solution can pass through the filter pipe 211 under the action of gravity and finally be discharged at the outlet pipe 213 after mixing is completed.

[0081] It should be noted that in use, after the raw materials are mixed into a solution in the mixing barrel 11, they pass through the adapter pipe 18 into the filter pipe 211, and then the solution flows upward along the bottom of the filter pipe 211, is filtered by the filter core 2144, and is discharged to the process through the outlet pipe 213;

[0082] During the filtering process of the solution through the filter core 2144, as shown in Figures 3-5 The second drive motor 2141 is started, the second drive motor 2141 drives the push rod 2143 to reciprocate through the cam 2142, the push rod 2143 drives the filter core 2144 to reciprocate along the inside of the guide groove 2121 in cooperation with the reverse thrust of the return spring 2145, the filter core 2144 drives the filter hole 21441 to reciprocate inside the filter pipe 211, when the filter core 2144 swings, the filter core 2144 drives the sealing roller 2152 to rotate, the impurities below the filter hole 21441 are flattened by the sealing roller 2152 and are scraped off at the scraping plate 2153, and the impurities stuck in the filter hole 21441 are flushed out by the sterile water sprayed by the spray port 2163 when they move directly below the spray port 2163, and are discharged along with the impurities scraped off into the collection frame 223, so that the filter core does not need to be replaced repeatedly, the filtering work can be continuously carried out, and the filtering efficiency is high.

[0083] In addition, the application seals the area directly below the backflush mechanism 216 above the filter core 2144 from the inside of the filter pipe 211 by the sealing block 2146, and seals the area directly below the backflush mechanism 216 below the filter core 2144 from the inside of the filter pipe 211 by the sealing roller 2152, which ensures that the concentrated solution in the filter pipe 211 is continuously filtered and is not contaminated by external bacteria when the filter core 2144 is flushed, and ensures that the quality of the processed concentrated solution is good.

[0084] It should be noted that the upper end of the water inlet pipe 2161 in the application is connected to a pipeline for sterile water, and the spray is performed only when the filter hole 21441 moves directly below the spray port 2163, and the filter hole 21441 is sealed by the filter core 2144 when it does not move directly below the spray port 2163, so as to avoid waste caused by continuous spraying of sterile water.

[0085] Example two

[0086] As shown in Figures 1-2As shown, wherein the same or corresponding parts as in example one adopt corresponding reference numerals as in example one, for the sake of brevity, only the difference points from example one are described hereinafter. The difference between this example two and example one is that:

[0087] The mixing unit 1 comprises:

[0088] A mixing barrel 11 is arranged at one side of the filtering assembly 21, and a feeding hopper 13 is arranged on the upper side of the mixing barrel 11. The lower end of the mixing barrel 11 is provided with a discharging port 15, and the lower end of the discharging port 15 is connected with the filtering assembly 21 through a adapter pipe 18;

[0089] A first driving motor 12 is installed on the upper end of the mixing barrel 11, and a stirring paddle 14 is connected to the lower end of the first driving motor 12 and arranged inside the mixing barrel 11;

[0090] A baffle 16 is slidingly inserted into the discharging port 15, and a guide plate 17 is arranged on the outer side of the baffle 16 for guiding the baffle 16.

[0091] It should be noted that the mixing of the mixing unit 1 in the present application is carried out in a sterile room.

[0092] It should be noted that at the initial stage, the baffle 16 closes the discharging port 15, and the raw materials and water are poured into the mixing barrel 11 from the feeding hopper 13. The first driving motor 12 is started, and the first driving motor 12 stirs and mixes the raw materials in the mixing barrel 11 through the stirring paddle 14. After complete mixing, the baffle 16 is pulled along the guide plate 17 to open the discharging port 15, and the raw materials are filtered in the filtering pipe 211 from the mixing barrel 11 through the adapter pipe 18. The whole process does not need to carry the mixed solution to the filtering area again, and the process is concentrated.

[0093] It should be noted that in this document, the relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0094] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A filter device for producing a hemodialysis concentrate, characterized in that The utility model relates to a kind of blood dialysis concentrate production filter devices, including: Mixing unit (1) for mixing raw materials; Filter unit (2) including the filter assembly (21) for being arranged in the mixing unit (1) one side for the solution after mixing unit (1) mixing is filtered and the discharge assembly (22) for being arranged in filter assembly (21) lower end for the impurity of filtering out is discharged; The filter assembly (21) includes: Filter pipe (211), with the mixing unit (1) is connected, its inside is equipped with guide slot (2121); Contain frame (212), it is arranged in the middle part of filter pipe (211); Leading-out pipe (213), it is connected on the upper end of filter pipe (211), for filtered solution is led out to next process; Filter core mechanism (214), it is slidably arranged in the inside of contain frame (212); Scraping mechanism (215), it is arranged in the inside of contain frame (212) and is located in the lower end of filter core mechanism (214), for filter core mechanism (214) is cleaned; Backflush mechanism (216), it is equipped with two groups, and is located above filter core mechanism (214), for the impurity in the inside of filter core mechanism (214) is washed; The filter core mechanism (214) includes: Second drive motor (2141), it is installed in the inside of contain frame (212) one side, its upper end and the above of contain frame (212) are connected with cam (2142); Filter core piece (2144), it is slidably inserted in the inside of guide slot (2121), its upper end is connected with push rod (2143) with the side contact of cam (2142), and the outside of push rod (2143) and the inside of contain frame (212) are equipped with groove, the inside of filter core piece (2144) is equipped with multiple filter holes (21441); Reset spring (2145), it is connected in the side of filter core piece (2144) opposite second drive motor (2141), for driving filter core piece (2144) reset; Sealing block (2146), it is equipped with two groups, it is connected in the upper end of filter core piece (2144), for the area below the filter pipe (211) and backflush mechanism (216) directly below above filter core piece (2144) is closed; The scraping mechanism (215) includes: Top plate (2151), it is equipped with two groups, it is connected in the bottom of contain frame (212), its upper end is rotatably connected with sealing roller (2152) with the bottom contact of filter core piece (2144), for the area below the filter pipe (211) and backflush mechanism (216) directly below above filter core piece (2144) is closed; The scraping mechanism (215) further includes scraping plate (2153) connected in the side of top plate (2151) backflush mechanism (216), for the impurity of filter core piece (2144) lower end is scraped off; The lower end of filter core mechanism (214) is equipped with recess (21442), the upper end of scraping plate (2153) and the top of recess (21442) contact.

2. The blood dialysis concentrate production filter device according to claim 1, wherein: The backflush mechanism (216) includes: A water inlet pipe (2161) is connected to the upper end of the containing frame (212); A shunt groove (2162) is arranged below the water inlet pipe (2161) and inside the containing frame (212); A spray port (2163) is arranged inside the containing frame (212) and communicates with the lower end of the shunt groove (2162), and is used for flushing the filter holes (21441) that are moved directly below the spray port (2163).

3. The filter device for producing hemodialysis concentrate according to claim 1, characterized in that: The discharging assembly (22) comprises: Two groups of discharge pipes (221) are connected to the lower end of the containing frame (212) and are used for discharging impurities after the backwashing mechanism (216) is flushed; A converging pipe (222) is connected to the discharging end of the discharge pipe (221) and is used for converging the impurities discharged by the two groups of discharge pipes (221); A collecting frame (223) is arranged at the discharging port (15) of the converging pipe (222) and is used for collecting the impurities discharged by the converging pipe (222).

4. The filter device for producing hemodialysis concentrate according to claim 1, characterized in that: The mixing unit (1) comprises: A mixing barrel (11) is arranged on one side of the filtering assembly (21), and a feeding hopper (13) is arranged on the upper side of the mixing barrel (11); the lower end of the mixing barrel (11) is provided with a discharging port (15), and the lower end of the discharging port (15) communicates with the filtering assembly (21) through a switching pipe (18); A first driving motor (12) is installed at the upper end of the mixing barrel (11), and a stirring paddle (14) is connected to the lower end of the first driving motor (12) and inside the mixing barrel (11); A baffle (16) is slidingly inserted into the discharging port (15), and a guide plate (17) is arranged on the outer side of the baffle (16) and is used for guiding the baffle (16).

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