Filter for preparing hemodialysis concentrate

Abstract

The utility model relates to the technical field of filtration, in particular to a filter for preparing hemodialysis concentrate, which comprises a main pipe, a bypass pipe fixedly communicated with the middle of the main pipe, a filter screen fixedly mounted at the position where the main pipe is communicated with the bypass pipe, and a collecting cylinder detachably connected with one end of the main pipe and hermetically communicated with the main pipe. The collecting barrel is provided with a notch scraping plate which can extend into the main pipe and scrape the filter screen, and the notch scraping plate can rotate in the collecting barrel, the filtering structure can be conveniently collected and cleaned, the blocking phenomenon is avoided, the structure is simple, the cost is low, and the device is suitable for wide popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration, in particular to a filter for configuring hemodialysis concentrate. Background Art

[0002] The dialysate formed by diluting the dialysis concentrate with dialysis water is the key medium for exchanging with blood and removing uremic toxins and water during hemodialysis treatment. It has a certain osmotic pressure and can exchange with blood through a filter membrane. It needs to be filtered during configuration. After searching, a Chinese patent with publication number CN208893294U discloses a filtration device for producing HD-Y hemodialysis concentrate. By adding a fixing ring, a spring, a through hole, a ball groove and a ball, the design drives the fixing ring to move through the elastic force of the spring, thereby driving the automatic reset of the discharge hose. The design of the ball groove and the ball is convenient for reducing the resistance of the discharge hose to move. The present invention solves certain defects of the currently used filtration device for producing hemodialysis concentrate, which lacks the anti-bending function of the discharge hose. The filter plate drives the discharge hose to move during the movement, but the friction between the discharge hose and the through hole is large, and the discharge hose is easily stuck inside the through hole, which easily causes the discharge hose inside the frame to bend, affecting the discharge of the dialysis concentrate and easily causing the discharge hose to be damaged. However, it is not convenient to collect the filtered impurities, which is easy to clog the filter plate. Therefore, a filter for configuring hemodialysis concentrate is designed, which is convenient for collecting the filtered impurities and convenient for cleaning the filter structure to avoid clogging. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the deficiencies in the prior art, the utility model provides a filter for configuring hemodialysis concentrate, which is convenient for collecting filtered impurities and cleaning the filter structure to avoid clogging. It has a simple structure and low cost and is suitable for wide promotion.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a filter for configuring hemodialysis concentrate, comprising a main pipe, a bypass pipe is fixedly connected to the middle of the main pipe, a filter screen is fixedly installed at the position where the main pipe and the bypass pipe are connected, one end of the main pipe is detachably connected to a collection cylinder sealed and connected to the main pipe, and a notched scraper is provided on the collection cylinder, which can be extended into the main pipe and scrape the filter screen, and the notched scraper can rotate in the collection cylinder (6).

[0007] Preferably, a sealing shaft that is in sealing and sliding cooperation with the collecting barrel is fixedly connected to the notched scraper, and a twist handle is fixedly connected to the side of the sealing shaft away from the notched scraper.

[0008] Preferably, a sealing guide ring is fixedly connected to the collecting cylinder and is sealingly and slidingly matched with the sealing rotating shaft.

[0009] Preferably, one end of the main pipe is fixedly connected with a threaded sleeve, and the collecting tube is threadably connected to the threaded sleeve.

[0010] Preferably, the bypass pipe is arranged to be inclined downward toward the collecting cylinder side, and the notched scraper is arranged to be inclined.

[0011] Preferably, the diameter of the bypass pipe is not greater than the diameter of the main pipe.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a filter for configuring hemodialysis concentrate, which has the following beneficial effects:

[0014] The filter for configuring hemodialysis concentrate can facilitate the delivery of hemodialysis concentrate from the opening side of the main pipe through the cooperation of the main pipe, the bypass pipe and the collecting tube, and then be discharged through the bypass pipe after being filtered by the filter screen, and can be discharged from the opening end of the bypass pipe, and the filtered impurities are retained in the main pipe above the filter screen, and with the impact of the water flow, the impurities retained on the filter screen will be washed to the side of the collecting tube. After a period of time, the notched scraper can be moved to the side of the filter screen away from the collecting tube, and then the notched scraper can be rotated to make it close to the bottom wall of the main pipe, and then the notched scraper can be pulled to the side of the collecting tube, so that the impurities adhered to the filter screen can be scraped off and pushed into the collecting tube, and the filtering can be stopped, the collecting tube can be disassembled for cleaning and then reinstalled on the main pipe, and then it can continue to be used. The filter for configuring hemodialysis concentrate can facilitate the collection of filtered impurities and the cleaning of the filtering structure to avoid blockage, and the structure is simple and the cost is low, which is suitable for wide promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the overall partial section of the utility model;

[0016] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the overall partial cross-section of the utility model in the scraping preparation state;

[0018] Figure 4 It is a schematic diagram of the collecting cylinder, sealing shaft and notched scraper structure of the utility model.

[0019] Markings in the attached figure: 1. main pipe; 2. bypass pipe; 3. filter screen; 4. liquid inlet; 5. liquid outlet; 6. collecting cylinder; 7. sealing shaft; 8. notched scraper; 9. handle; 10. threaded sleeve; 11. sealing guide ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Example:

[0022] See also Figure 1-4 A filter for configuring hemodialysis concentrate includes a main pipe 1, a bypass pipe 2 is fixedly connected to the middle of the main pipe 1, a filter screen 3 is fixedly installed at the position where the main pipe 1 and the bypass pipe 2 are connected, one end of the main pipe 1 is detachably connected to a collecting cylinder 6 that is sealed and connected to the main pipe 1, and the collecting cylinder 6 is provided with a notched scraper 8 that can extend into the main pipe 1 and scrape the filter screen 3, and the notched scraper 8 can rotate in the collecting cylinder 6.

[0023] Specifically, a sealing shaft 7 is fixedly connected to the notched scraper 8 and is in sealing and sliding cooperation with the collecting tube 6. A twist handle 9 is fixedly connected to the side of the sealing shaft 7 away from the notched scraper 8. Through the cooperation of the sealing shaft 7 and the twist handle 9, it is convenient to adjust the position of the notched scraper 8 in the main pipe 1, and convenient to rotate and adjust the notched scraper 8, so that impurities adhered to the top of the filter screen 3 can be removed before scraping. Then, after rotation, the notched scraper 8 can be brought into contact with the side wall of the main pipe 1, so that the filter screen 3 can be directly scraped.

[0024] Specifically, a sealing guide ring 11 is fixedly connected to the collecting barrel 6 and is sealingly and slidingly matched with the sealing shaft 7. By providing the sealing guide ring 11, it is convenient to increase the guiding contact area with the sealing shaft 7, thereby improving the sealing performance and matching structure stability of the sealing shaft 7 and the collecting barrel 6.

[0025] Specifically, one end of the main pipe 1 is fixedly connected with a threaded sleeve 10, and the collecting tube 6 is threadedly connected to the threaded sleeve 10. Through the cooperation between the threaded sleeve 10 and the collecting tube 6, it is convenient to screw the collecting tube 6 to one side of the main pipe 1 for easy disassembly.

[0026] Specifically, the bypass pipe 2 is inclined downward toward the collecting tube 6, and the notched scraper 8 is inclined. Since the bypass pipe 2 is inclined, the filtering length of the filter screen 3 can be increased, so that the filtered impurities can be dispersed in the main pipe 1, and the burden of the notched scraper 8 on the filter screen 3 is reduced, so that the impurities on the filter screen 3 can be scraped off more easily.

[0027] Specifically, the diameter of the bypass pipe 2 is not greater than the diameter of the main pipe 1, which improves the stability of the structure and the smoothness of filtering.

[0028] When in use, the blood radiograph concentrate is introduced from the opening side of the main pipe 1, and then discharged through the bypass pipe 2 after being filtered by the filter screen 3, and can be discharged from the open end of the bypass pipe 2. The filtered impurities are retained in the main pipe 1 above the filter screen 3. With the impact of the water flow, the impurities retained on the filter screen 3 will be flushed to the side of the collecting tube 6. After a period of time, the notched scraper 8 can be moved to the side of the filter screen 3 away from the collecting tube 6, and then the notched scraper 8 can be rotated to make it close to the bottom wall of the main pipe 1 to reach the scraping preparation state, and then the notched scraper 8 can be pulled toward the side of the collecting tube 6, so that the impurities adhered to the filter screen 3 can be scraped off and pushed into the collecting tube 6. The filtering can be stopped, the collecting tube 6 can be disassembled for cleaning and then reinstalled on the main pipe 1, and the use can continue.

[0029] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0030] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0031] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0032] It should be noted that, in this article, relational terms such as "first" and "second" are only used 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 these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A filter for preparing hemodialysis concentrate, characterized in that: The invention comprises a main pipe (1), the middle part of which is fixedly connected to a bypass pipe (2), a filter screen (3) is fixedly installed at the position where the main pipe (1) and the bypass pipe (2) are connected, one end of the main pipe (1) is detachably connected to a collecting cylinder (6) which is sealed and connected to the main pipe (1), and a notched scraper (8) which can be extended into the main pipe (1) and scrape the filter screen (3) is provided on the collecting cylinder (6), and the notched scraper (8) can rotate in the collecting cylinder (6).

2. The filter for preparing hemodialysis concentrate according to claim 1, characterized in that: The notched scraper (8) is fixedly connected to a sealing shaft (7) that is sealingly slidably matched with the collecting barrel (6), and a twist handle (9) is fixedly connected to the side of the sealing shaft (7) that is away from the notched scraper (8).

3. The filter for preparing hemodialysis concentrate according to claim 2, characterized in that: The collecting cylinder (6) is fixedly connected with a sealing guide ring (11) which is sealingly and slidably matched with the sealing rotating shaft (7).

4. The filter for preparing hemodialysis concentrate according to claim 3, characterized in that: One end of the main pipe (1) is fixedly connected to a threaded sleeve (10), and the collecting tube (6) is threadably connected to the threaded sleeve (10).

5. The filter for preparing hemodialysis concentrate according to claim 4, characterized in that: The bypass pipe (2) is arranged to be inclined downward toward the collecting cylinder (6), and the notched scraper (8) is arranged to be inclined.

6. The filter for preparing hemodialysis concentrate according to claim 5, characterized in that: The diameter of the bypass pipe (2) is no greater than the diameter of the main pipe (1).

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