Multi-stage filtering device for ultrapure water production

Abstract

The utility model discloses a multistage filtering device for ultrapure water production, which comprises a filtering box, a water inlet pipe is fixedly arranged at the top of the filtering box, a water outlet pipe is fixedly arranged at the bottom of the filtering box, a filtering plate is fixedly arranged in the filtering box, and a driving part is arranged on the right side of the filtering box. And a rotating screw rod is rotationally arranged in the filter box, the rotating screw rod is connected with a driving part, and a movable screw sleeve is arranged on the surface of the rotating screw rod in a threaded mode. The dirt scraping plate pushes the plugging plate to move out of the dirt outlet through the connecting plate, so that the dirt scraping plate pushes impurities out of the dirt outlet, the filter plate is conveniently cleaned, and when the dirt scraping plate resets, the plugging plate is driven by the connecting plate to enter the dirt outlet, so that the dirt outlet is plugged, and the dirt scraping plate is convenient to clean. When the water flow for preparing the ultrapure water is filtered by the filter plate, the water flow cannot be discharged through the sewage outlet, so that the situation of water flow waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of filtration, in particular to a multi-stage filtration device for ultrapure water production. Background Art

[0002] Ultrapure water is also called UP water. This water contains almost no impurities except water molecules, and no bacteria, viruses, organic matter such as chlorinated dioxins, and of course no mineral trace elements needed by the human body. In other words, it is water from which almost all atoms except oxygen and hydrogen have been removed. It can be used in the preparation process of ultrapure materials (semiconductor component materials, nano-fine ceramic materials, etc.) using distillation, deionization, reverse osmosis technology or other appropriate supercritical fine technology. In the preparation process of ultrapure water, the water flow for preparing ultrapure water needs to be filtered to remove impurities in the water flow. In order to filter out impurities in the water flow thoroughly, a multi-stage filtration device is usually used.

[0003] In the prior art, patent number CN202321726434.0 proposes a multi-stage filtration device for ultrapure water purification, wherein an inclined filter plate facilitates filtered impurities to enter the interior of a collection box through a collection pipe, and at the same time, the motor is started to drive the screw to rotate, so that the moving block drives the scraper to scrape the filter plate. During the movement of the scraper, the scraper can always stick to the filter plate through the set movable rod, movable block and spring, thereby improving the efficiency of impurity collection, and does not require manual operation, which is convenient and fast, greatly improving the practicality of the device. However, in the use of the above-mentioned patent, since the collection pipe is in an open state, when filtering the water flow, a part of the water flow will flow out of the box through the collection pipe, causing the water flow to mix with the collected impurities. Therefore, a multi-stage filtration device for ultrapure water production is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a multi-stage filtration device for ultrapure water production, which is used to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The filter press has the filter screen on its top, and the filter screen has the filter screen on its bottom.

[0007] Preferably, the driving component includes a mounting shell, the mounting shell is fixedly mounted on the right side of the filter box, a driving motor is fixedly arranged at the bottom of the mounting shell, the output end of the driving motor passes through the mounting shell and extends to the interior of the mounting shell and is fixedly arranged with a driving worm, a rotating worm wheel is meshedly arranged on the surface of the driving worm, and the rotating worm wheel is fixedly mounted on the surface of the rotating screw.

[0008] Preferably, the extrusion component comprises a movable plate, the movable plate is fixedly mounted on the top of the movable screw sleeve, and an extrusion column is fixedly arranged on the left side of the movable plate.

[0009] Preferably, the limiting component includes a mounting sleeve, a side plate is fixedly provided on the left side of the mounting sleeve, a pressure sensor is fixedly provided on the right side of the side plate, a limiting ring is fixedly provided inside the mounting sleeve, a moving rod is slidably provided inside the limiting ring, a moving ring is fixedly provided on the surface of the moving rod, the moving ring is slidably provided inside the mounting sleeve, a spring is fixedly provided on the left side of the moving ring, and the left end of the spring is fixedly provided on the right side of the limiting ring.

[0010] Preferably, there are a plurality of filter plates, the plurality of filter plates are distributed in a linear array from top to bottom, and the filter meshes of the plurality of filter plates decrease in size from top to bottom.

[0011] Preferably, the moving rod is in a circular structure, the right end of the moving rod passes through the filter box and extends to the inside of the filter box, and the moving rod is slidably connected to the filter box.

[0012] Preferably, the fixing plate is in an inverted U-shaped structure and is made of metal.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The multi-stage filtering device for ultrapure water production drives the rotating screw to rotate through the driving component, so that the movable screw sleeve drives the scraper plate through the fixed plate to pass the impurities on the filter plate and push the impurities to the left. At the same time, the scraper plate pushes the blocking plate out of the sewage outlet through the connecting plate, so that the scraper plate pushes the impurities out of the sewage outlet, which is convenient for cleaning the filter plate. When the scraper plate is reset, it drives the blocking plate into the sewage outlet through the connecting plate, thereby blocking the sewage outlet, so that when the filter plate filters the water flow for preparing ultrapure water, it will not be discharged through the sewage outlet, thereby avoiding the waste of water flow.

[0015] 2. In the multi-stage filtering device for ultrapure water production, the movable screw sleeve pushes the extrusion column through the movable plate to push the movable rod to drive the movable ring to push the spring to compress, so that the movable rod squeezes the pressure sensor, thereby controlling the moving position of the scraper plate to prevent the scraper plate from pushing impurities out of the sewage outlet, and the driving component still drives the rotating screw to rotate, causing the driving motor in the driving component to be overloaded and damaged, so that the filter plate cleaning process can be carried out automatically. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the structural survey drawing of the utility model;

[0017] Figure 2 This is a diagram showing the internal structure of the housing for the utility model;

[0018] Figure 3 This is a front cross-sectional view of the structure of the utility model;

[0019] Figure 4 It is a right sectional view of the structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the local structure of the utility model;

[0021] Figure 6 for Figure 3 A magnified view of the structure at A;

[0022] Figure 7 for Figure 3 Enlarged view of the structure at B.

[0023] In the figure: 1. filter box; 2. water inlet pipe; 3. water outlet pipe; 4. filter plate; 5. installation shell; 6. drive motor; 7. drive worm; 8. rotate worm wheel; 9. rotate screw; 10. move screw sleeve; 11. fixed plate; 12. scraper plate; 13. connecting plate; 14. limit slide groove; 15. sealing plate; 16. moving plate; 17. extrusion column; 18. installation sleeve; 19. side plate; 20. pressure sensor; 21. limit ring; 22. moving rod; 23. moving ring; 24. spring. DETAILED DESCRIPTION

[0024] 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.

[0025] Reference Figure 1-7A multi-stage filtering device for ultrapure water production comprises a filter box 1, a water inlet pipe 2 is fixedly arranged on the top of the filter box 1, a water outlet pipe 3 is fixedly arranged on the bottom of the filter box 1, a filter plate 4 is fixedly arranged inside the filter box 1, and the number of the filter plates 4 is several, and the filter plates 4 are distributed in a linear array from top to bottom, and the filter meshes of the filter plates 4 decrease successively from top to bottom, which is convenient for multi-stage filtration of the water flow, so that the water flow for preparing ultrapure water is filtered more cleanly, and the influence of incomplete filtration of the water flow on the preparation of ultrapure water is avoided. A driving component is arranged on the right side of the filter box 1, and a rotating screw 9 is rotatably arranged inside the filter box 1, and the rotating screw 9 is connected to the driving component, and the driving component comprises a mounting shell 5, and a mounting outer shell The housing 5 is fixedly installed on the right side of the filter box 1. A driving motor 6 is fixedly arranged at the bottom of the housing 5. The output end of the driving motor 6 passes through the housing 5 and extends to the inside of the housing 5 and is fixedly provided with a driving worm 7. A rotating worm wheel 8 is meshedly arranged on the surface of the driving worm 7. The rotating worm wheel 8 is fixedly installed on the surface of the rotating screw 9. The driving motor 6 drives the driving worm 7 to rotate, so that the driving worm 7 drives the rotating screw 9 to rotate by rotating the worm wheel 8, so that it is convenient for the moving screw sleeve 10 to drive the scraping plate 12 to move through the fixed plate 11, so that the scraping plate 12 drives the blocking plate 15 through the connecting plate 13 to move the sewage outlet out, or the blocking plate 15 enters the sewage outlet, so that the blocking plate 15 blocks the sewage outlet, and the rotating worm wheel 8 drives the driving worm 7 to rotate. A movable screw sleeve 10 is provided with a thread on the surface of the movable screw 9, and a fixed plate 11 is fixedly provided at the bottom of the movable screw sleeve 10, and a scraper plate 12 is fixedly provided at the bottom of the fixed plate 11. The fixed plate 11 is an inverted U-shaped structure, and the fixed plate 11 is made of metal material. The fixed plate 11 made of metal makes the fixed plate 11 stronger and easier to bend, thereby avoiding the situation where the scraper plate 12 and the filter plate 4 are not in contact due to the completion of the fixed plate 11. The scraper plate 12 contacts the filter plate 4, and the front and rear sides of the scraper plate 12 are fixedly provided with connecting plates 13. A limited sliding groove 14 is provided inside the filter box 1, and the connecting plate 13 is slidably provided inside the limited sliding groove 14. A blocking plate 15 is fixedly provided between the facing surfaces of the connecting plate 13, and the filter A sewage outlet is provided on the right side of the box 1, and a sealing plate 15 is overlapped and arranged inside the sewage outlet. The rotating screw 9 is driven to rotate by a driving component, so that the movable screw sleeve 10 drives the scraper plate 12 through the fixed plate 11 to pass the impurities on the filter plate 4 and push the impurities to the left. At the same time, the scraper plate 12 pushes the sealing plate 15 out of the sewage outlet through the connecting plate 13, so that the scraper plate 12 pushes the impurities out of the sewage outlet, thereby facilitating the cleaning of the filter plate 4. When the scraper plate 12 is reset, it will drive the sealing plate 15 to enter the sewage outlet through the connecting plate 13, thereby blocking the sewage outlet, so that when the filter plate 4 filters the water flow for preparing ultrapure water, it will not be discharged through the sewage outlet, thereby avoiding waste of water flow.

[0026] Specifically, an extrusion component is arranged on the top of the movable screw sleeve 10, and the extrusion component includes a movable plate 16, and the movable plate 16 is fixedly installed on the top of the movable screw sleeve 10. An extrusion column 17 is fixedly arranged on the left side of the movable plate 16. A limiting component cooperating with the extrusion component is arranged on the left side of the filter box 1, and the limiting component includes a mounting sleeve 18, and a side plate 19 is fixedly arranged on the left side of the mounting sleeve 18. A pressure sensor 20 is fixedly arranged on the right side of the side plate 19. A limiting ring 21 is fixedly arranged inside the mounting sleeve 18, and a moving rod 22 is slidably arranged inside the limiting ring 21. The moving rod 22 has a circular structure, and the right end of the moving rod 22 passes through the filter box 1 and extends to the inside of the filter box 1. The moving rod 22 is slidably connected to the filter box 1. By installing the moving rod 22 inside the filter box 1, it is convenient for the extrusion column 17 to push the moving rod 22 to move, so that it is convenient for the moving rod 22 to apply pressure to the pressure sensor 20. The movable ring 23 is slidably arranged inside the mounting sleeve 18, and a spring 24 is fixedly arranged on the left side of the movable ring 23. The left end of the spring 24 is fixedly installed on the right side of the limit ring 21. The movable screw sleeve 10 pushes the extrusion column 17 to move through the movable plate 16, so that the extrusion column 17 pushes the movable rod 22 to drive the movable ring 23 to compress the spring 24, so that the movable rod 22 applies pressure to the pressure sensor 20. When the pressure sensor 20 detects a pressure change, and it indicates that the scraper plate 12 pushes the impurities on the filter plate 4 out through the sewage outlet, the scraper plate 12 is reset, so that the scraper plate 12 drives the sealing plate 15 to enter the sewage outlet through the connecting plate 13, thereby preventing water from flowing out of the sewage outlet. After the movable screw sleeve 10 drives the extrusion column 17 to reset through the movable plate 16, the movable ring 23 is pushed to contact the left side of the filter box 1 through the rebound effect of the spring 24, and the movable rod 22 is reset through the movable ring 23.

[0027] The multi-stage filtering device for ultrapure water production is connected to 220V mains electricity, and the main controller can be a conventional known device for control such as a computer.

[0028] During use: the water flow for preparing ultrapure water enters the filter box 1 through the water inlet pipe 2, and is filtered by a plurality of filter plates 4. Since the plurality of filter plates 4 are distributed in a linear array, the filter plates 4 perform graded filtration on the water flow. Since the sewage outlet is blocked by the blocking plate 15, the water flow will not flow out of the filter box 1 through the sewage outlet. The filtered water flows out of the filter box 1 through the water outlet pipe 3. When it is necessary to clean the filter plate 4, the output end is driven by the driving motor 6 to drive the driving worm 7 to rotate, and the driving worm 7 drives the rotating worm wheel 8 meshing with the driving worm 7 to rotate, and the rotating worm wheel 8 drives the rotating screw 9 to rotate, so that the movable screw sleeve 10 moves to the left, and the movable screw sleeve 10 drives the fixed plate 11 and the movable plate 16 to move to the left, so that the fixed plate 11 and the movable plate 16 drive the scraper plate 12 and the extrusion column 17 to move to the left, so that The scraper plate 12 drives the connecting plate 13 to slide to the left inside the limiting slide groove 14, and pushes the blocking plate 15 out of the sewage outlet through the connecting plate 13. When the scraper plate 12 pushes out the impurities scraped off the filter plate 4 through the sewage outlet, the moving rod 22 pushed by the extrusion column 17 moves to the left, and drives the moving ring 23 to compress the spring 24 through the moving rod 22, so that the detection end of the pressure sensor 20 pushed by the moving rod 22 is squeezed. At this time, the pressure sensor 20 detects a pressure change, indicating that the scraper plate 12 pushes the impurities out of the filter box 1, then the driving motor 6 drives the rotating worm gear 8 to reverse through the driving worm 7, so that the rotating worm gear 8 drives the rotating screw 9 to reverse, and the moving screw sleeve 10 drives the scraper plate 12 to reset through the fixed plate 11, so that the scraper plate 12 drives the blocking plate 15 to enter the sewage outlet through the connecting plate 13, thereby blocking the sewage outlet.

[0029] To sum up, the multi-stage filtering device for ultrapure water production drives the rotating screw 9 to rotate through the driving component, so that the movable screw sleeve 10 drives the scraper plate 12 through the fixed plate 11 to pass the impurities on the filter plate 4 and push the impurities to the left. At the same time, the scraper plate 12 pushes the blocking plate 15 out of the sewage outlet through the connecting plate 13, so that the scraper plate 12 pushes the impurities out of the sewage outlet, thereby facilitating the cleaning of the filter plate 4, and when the scraper plate 12 is reset, it will drive the blocking plate 15 into the sewage outlet through the connecting plate 13, thereby blocking the sewage outlet, so that when the filter plate 4 filters the water flow for preparing ultrapure water, it will not be discharged through the sewage outlet, thereby avoiding the waste of water flow, and is used to solve the problems raised in the above-mentioned background technology.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. 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.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration device for ultrapure water production, comprising a filter box (1), characterized in that: A water inlet pipe (2) is fixedly arranged at the top of the filter box (1), a water outlet pipe (3) is fixedly arranged at the bottom of the filter box (1), a filter plate (4) is fixedly arranged inside the filter box (1), a driving component is arranged on the right side of the filter box (1), a rotating screw (9) is rotatably arranged inside the filter box (1), the rotating screw (9) is connected to the driving component, a movable screw sleeve (10) is threadedly arranged on the surface of the rotating screw (9), an extrusion component is arranged at the top of the movable screw sleeve (10), a fixed plate (11) is fixedly arranged at the bottom of the movable screw sleeve (10), and the fixed plate (11) is 1) A dirt scraping plate (12) is fixedly arranged at the bottom, the dirt scraping plate (12) is in contact with the filter plate (4), connecting plates (13) are fixedly arranged on both the front and rear sides of the dirt scraping plate (12), a limiting slide groove (14) is provided inside the filter box (1), the connecting plate (13) is slidably arranged inside the limiting slide groove (14), a blocking plate (15) is fixedly arranged between the facing surfaces of the connecting plate (13), a dirt outlet is penetrated on the right side of the filter box (1), the blocking plate (15) is overlapped and arranged inside the dirt outlet, and a limiting component cooperating with the extrusion component is arranged on the left side of the filter box (1).

2. A multi-stage filtration device for ultrapure water production according to claim 1, characterized in that: The driving component comprises a mounting housing (5), the mounting housing (5) being fixedly mounted on the right side of the filter box (1), a driving motor (6) being fixedly arranged at the bottom of the mounting housing (5), an output end of the driving motor (6) passing through the mounting housing (5) and extending into the interior of the mounting housing (5) and being fixedly arranged with a driving worm (7), a rotating worm wheel (8) being meshedly arranged on the surface of the driving worm (7), and the rotating worm wheel (8) being fixedly mounted on the surface of a rotating screw (9).

3. A multi-stage filtration device for ultrapure water production according to claim 1, characterized in that: The extrusion component comprises a moving plate (16), the moving plate (16) being fixedly mounted on the top of the moving screw sleeve (10), and an extrusion column (17) being fixedly arranged on the left side of the moving plate (16).

4. A multi-stage filtration device for ultrapure water production according to claim 1, characterized in that: The limiting component comprises a mounting sleeve (18), a side plate (19) is fixedly arranged on the left side of the mounting sleeve (18), a pressure sensor (20) is fixedly arranged on the right side of the side plate (19), a limiting ring (21) is fixedly arranged inside the mounting sleeve (18), a moving rod (22) is slidably arranged inside the limiting ring (21), a moving ring (23) is fixedly arranged on the surface of the moving rod (22), the moving ring (23) is slidably arranged inside the mounting sleeve (18), a spring (24) is fixedly arranged on the left side of the moving ring (23), and the left end of the spring (24) is fixedly mounted on the right side of the limiting ring (21).

5. A multi-stage filtration device for ultrapure water production according to claim 1, characterized in that: The number of the filter plates (4) is a plurality, and the plurality of filter plates (4) are distributed in a linear array from top to bottom, and the filter meshes of the plurality of filter plates (4) decrease in size from top to bottom.

6. A multi-stage filtration device for ultrapure water production according to claim 4, characterized in that: The moving rod (22) has a circular structure, the right end of the moving rod (22) penetrates the filter box (1) and extends into the interior of the filter box (1), and the moving rod (22) is slidably connected to the filter box (1).

7. A multi-stage filtration device for ultrapure water production according to claim 1, characterized in that: The fixing plate (11) is in an inverted U-shaped structure, and the fixing plate (11) is made of metal material.

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