Multi-stage filtering pretreatment device
By designing a multi-stage filtration pretreatment device, the filter cartridge and spiral pusher plate automatically clean impurities such as silt and sand. Combined with the high-efficiency filtration of the movable filter screen, the problem of incomplete impurity removal in existing technologies is solved, thereby improving the service life and filtration efficiency of the reverse osmosis membrane.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PURUI ENVIRONMENTAL TECHNOLOGY (SHANGHAI) CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-19
AI Technical Summary
In existing technologies, during the preparation of ultrapure water, the preliminary filtration device is difficult to effectively remove large impurities such as silt and sand, which affects the service life of the reverse osmosis membrane.
A multi-stage filtration pretreatment device was designed, comprising a filter cartridge, a spiral pusher plate, a movable filter screen, and a lifting unit. The spiral pusher plate is driven by a motor to scrape impurities, and the impurities are automatically discharged by manually turning a knob. Combined with the filtration of the movable filter screen with a pore size of 5-15 microns, the filtration effect is further improved.
It effectively removes large impurities such as silt and sand, protects the service life of the reverse osmosis membrane, ensures the normal operation of the filter cartridge, and simplifies the impurity cleaning process.
Smart Images

Figure CN224252216U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pure water treatment technology, specifically a multi-stage filtration pretreatment device. Background Technology
[0002] Ultrapure water, as the name suggests, is water with extremely high purity. The conductive media in ultrapure water are completely removed, and the content of non-dissociated colloidal substances, gases, and organic matter is reduced to a very low level. It is frequently used in the semiconductor industry and molecular biology. Since ultrapure water is still produced from ordinary water resources, the most basic step in processing raw water sources such as groundwater is to perform preliminary treatment or pretreatment, which involves filtering the water to remove sediment, rust, and other impurities, thereby protecting the reverse osmosis membrane used in subsequent preparations and extending its service life. Utility Model Content
[0003] In view of the problems existing in the prior art, this utility model discloses a multi-stage filtration pretreatment device. The technical solution adopted includes a treatment box, a left inlet, a right outlet, a motor, a front window, an inner filter box, a lifting part, a movable filter screen, an external mounting plate, a rotating shaft, a knob, a movable shaft, a through hole, an internal mounting plate, an internal motor, an arc plate, a filter cylinder, filter holes in the cylinder wall, and a spiral pusher plate. The left inlet is located on the upper left side of the treatment box, and the right outlet is located on the lower right side. The motor is mounted on the top. The machine has a front window located in the middle of the front side. An inner filter box is fixed to the bottom of the treatment chamber. A lifting mechanism is installed on the inner wall of the treatment chamber to install the movable filter screen in the inner filter box. A connecting pipe from the right-side outlet extends into and connects to the inner filter box. A filter cartridge is fixedly connected to the inner end of the pipe connecting to the left-side inlet near the top of the treatment chamber. The filter cartridge has filter holes distributed on its wall for preliminary filtration of larger impurities such as silt and sand. An arc plate closes the right-side opening of the filter cartridge, and a spiral pusher plate is fixed to the left side of the arc plate. The spiral pusher plate contacts the inner wall of the filter cartridge. The right side of the arc plate is connected to the output shaft of the internal motor. The internal motor is fixedly installed in the center of the internal mounting plate. Four movable shafts are integrally formed on the right side of the internal mounting plate. The movable shafts extend from the opening on the right side of the treatment box, and the external mounting plate is fixed at the end of the extended end. A rotating shaft is rotatably installed on the right side of the treatment box. A knob is fixed at the right end of the rotating shaft. The outer wall of the rotating shaft is threaded. The center of the external mounting plate has a threaded hole that mates with the threaded part on the rotating shaft. When the internal motor is started, the spiral pusher plate is driven to rotate, scraping the mud and sand and other debris remaining in the filter cartridge to the right. At the same time, the knob is manually turned to drive the rotating shaft to rotate, which causes the outer mounting plate to move to the right, so that the arc plate moves away from the obstruction position of the filter cartridge. The mud and sand can be discharged out of the filter cartridge. In order to facilitate the recycling of mud and sand and other debris, a collection box can be inserted through the front window and placed below the right end of the filter cartridge. The mud and sand and debris are pushed to the right and fall into the collection box under the action of the spiral pusher plate, ensuring the normal use of the filter cartridge.
[0004] As a preferred technical solution of this utility model, the front window is closed with a detachable transparent glass plate, and the outer wall of the knob has an anti-slip groove.
[0005] As a preferred technical solution of this utility model, the lifting part includes an inner wall groove, a rotating screw, a spring, a bending rod, and a connecting shaft. The inner wall grooves are opened at the front and upper parts of the left and right inner walls of the processing box. The left and right ends of the bending rod are fitted into the inner wall grooves, and the outer wall of the end part contacts the inner wall of the inner wall groove. The rotating screw is rotatably installed on the bottom surface of the left inner wall groove, and the top end is fixedly connected to the output shaft of the motor that extends into the inner wall groove. The spring is fixed on the bottom surface of the right inner wall groove. The part of the left end of the bending rod in the inner wall groove is fitted into the rotating screw, and the bottom surface of the right end part is connected to the spring. In order to further improve stability, a shaft can be fixed in the inner wall groove on the right side. The part of the right end of the bending rod in the inner wall groove has an opening. The shaft is fitted onto the shaft through the opening. The shaft is made of a smooth material, and the distance between the shaft and the inner wall of the opening is less than 0.02 mm, so that the bending rod can still maintain stable up and down movement when lifted by the rotating screw and the drive knob of the top motor on one side.
[0006] As a preferred technical solution of this utility model, the pore size of the movable filter is 5-15 micrometers.
[0007] As a preferred embodiment of this utility model, the internal motor is powered by a battery and controlled by a remote control device.
[0008] The beneficial effects of this utility model are as follows: the water to be prepared is initially filtered through the filter cartridge, and impurities such as mud and sand are left inside the filter cartridge. Subsequently, the residue inside the filter cartridge can be cleaned by rotating the shaft, knob, movable shaft, through hole, internal mounting plate, internal motor, arc plate, filter cartridge, filter hole in the cartridge wall and spiral pusher plate, so that the residue is removed from the filter cartridge, ensuring the normal filtration effect of the filter cartridge. Further filtration is carried out through the movable filter screen, and the movable filter screen can be lifted up by the lifting part for easy cleaning. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the structure of this utility model;
[0010] Figure 2 This is a schematic cross-sectional view of the present invention;
[0011] Figure 3 This is a schematic diagram of the cross-sectional structure of this utility model.
[0012] In the diagram: 1. Processing box; 101. Inner filter box; 102. Inner wall groove; 103. Rotating screw; 104. Spring; 105. Bending rod; 106. Connecting shaft; 107. Movable filter screen; 2. Left inlet; 3. Right outlet; 4. Motor; 5. Front window; 6. External mounting plate; 7. Rotating shaft; 8. Knob; 9. Movable shaft; 10. Through hole; 11. Internal mounting plate; 12. Internal motor; 13. Arc plate; 14. Filter cylinder; 15. Filter hole in cylinder wall; 16. Spiral pusher plate. Detailed Implementation
[0013] Example 1
[0014] like Figures 1 to 3 As shown, this utility model discloses a multi-stage filtration pretreatment device. The technical solution adopted includes a treatment box 1, a left inlet 2, a right outlet 3, a motor 4, a front window 5, an inner filter box 101, a lifting part, a movable filter screen 107, a rotating shaft 7, a knob 8, a movable shaft 9, a through hole 10, an internal mounting plate 11, an internal motor 12, an arc plate 13, a filter cylinder 14, filter holes in the cylinder wall 15, and a spiral pusher plate 16. The left inlet 2 is located on the upper left side of the treatment box 1, and the right outlet 3 is located on the lower right side. The motor 4 is installed on the top, and the front window 5 is located in the middle of the front side. The inner filter box 101 is fixed to the bottom surface of the treatment box 1. The lifting part is provided on the inner wall of the treatment box 1. The movable filter screen 107 in the inner filter box 101 is installed through the lifting part. The upper part of the treatment box 1 is connected to the left inlet 2. A filter cylinder 14 is fixedly connected to the inner end of the pipe connected to the water inlet 2. Filter holes 15 are distributed on the filter cylinder 14. The arc plate 13 closes the opening at the right end of the filter cylinder 14. A spiral pusher plate 16 is fixed on the left side of the arc plate 13. The spiral pusher plate 16 contacts the inner wall of the filter cylinder 14. The right side of the arc plate 13 is connected to the output shaft of the internal motor 12. The internal motor 12 is fixedly installed at the center of the internal mounting plate 11. Four movable shafts 9 are integrally formed on the right side of the internal mounting plate 11. The movable shafts 9 extend from the through hole 10 on the right side of the treatment box 1. An external mounting plate 6 is fixed at the end of the extended end. A rotating shaft 7 is rotatably installed on the right side of the treatment box 1. A knob 8 is fixed at the right end of the rotating shaft 7. The outer wall of the rotating shaft 7 is provided with threads. The center of the external mounting plate 6 has a threaded hole and is installed in conjunction with the threaded part on the rotating shaft 7.
[0015] As a preferred technical solution of this utility model, the front window 5 is closed with a detachable transparent glass plate, and the outer wall of the knob 8 has an anti-slip groove.
[0016] As a preferred technical solution of this utility model, the lifting part can adjust the height of the movable filter 107 so that it rises outside the inner filter box 101, making it convenient to clean the movable filter through the front window 5. Specifically, inner wall grooves 102 are opened on the left and right inner walls of the treatment box 1 at the front and upper part. The left and right ends of the bent rod 105 are placed in the inner wall grooves 102, and the outer wall of the end part contacts the inner wall of the inner wall groove 102. The bottom surface of the left inner wall groove 102 is rotatably installed with a rotating screw 103, and the top end is fixedly connected to the output shaft of the motor 4 that extends into the inner wall groove 102. The bottom surface of the right inner wall groove 102 is fixed with a spring 104. The left end of the bent rod 105 in the inner wall groove 102 is installed in conjunction with the rotating screw 103, and the bottom surface of the right end is connected to the spring 104.
[0017] As a preferred technical solution of this utility model, the pore size of the movable filter 107 is 5-15 micrometers.
[0018] As a preferred technical solution of this utility model, the internal motor 12 is powered by a battery and controlled by a remote control device.
[0019] The working principle of this utility model is as follows: When in use, the internal motor drives the spiral pusher plate to rotate, scraping the residual mud and sand in the filter cylinder to the right. At the same time, manually turning the knob drives the rotating shaft to rotate, which causes the outer mounting plate to move to the right, so that the arc plate moves away from the obstruction position of the filter cylinder, and the mud and sand can be discharged out of the filter cylinder. In order to facilitate the recycling of mud and sand, the collection box can be inserted through the front window and placed below the right end of the filter cylinder. Under the action of the spiral pusher plate, the mud and sand are pushed to the right and fall into the collection box, ensuring the normal use of the filter cylinder.
[0020] Components not described in detail in this article are existing technologies.
[0021] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. A multi-stage filtration pretreatment device, comprising a treatment tank (1), a left inlet (2), a right outlet (3), a motor (4), and a front window (5), characterized in that: The treatment box (1) includes an inner filter box (101), a lifting mechanism, a movable filter screen (107), an external mounting plate (6), a rotating shaft (7), a knob (8), a movable shaft (9), a through hole (10), an internal mounting plate (11), an internal motor (12), an arc plate (13), a filter cylinder (14), filter holes in the cylinder wall (15), and a spiral pusher plate (16). The treatment box (1) has a left-side inlet (2) located on the upper left side, a right-side outlet (3) located on the lower right side, a motor (4) mounted on the top, and a front window (5) located in the middle of the front side. The inner bottom surface of the treatment box (1) is fixed with the inner filter box (101). A lifting mechanism is installed on the inner wall of the treatment box (1) to install the movable filter screen (107) in the inner filter box (101). A filter cylinder (14) is fixedly connected to the inner end of the pipe connected to the left-side inlet (2) on the upper part of the inside of the treatment box (1). The upper part of the cylinder wall has filter holes (15); the arc plate (13) closes the opening at the right end of the filter cylinder (14), and a spiral pusher plate (16) is fixed on the left side of the arc plate (13). The spiral pusher plate (16) contacts the inner wall of the filter cylinder (14), and the right side of the arc plate (13) is connected to the output shaft of the internal motor (12); the internal motor (12) is fixedly installed at the center of the internal mounting plate (11); four movable shafts (9) are integrally formed on the right side of the internal mounting plate (11). The movable shafts (9) extend from the through hole (10) on the right side of the processing box (1), and an external mounting plate (6) is fixed at the end of the extended end. A rotating shaft (7) is rotatably installed on the right side of the processing box (1), and a knob (8) is fixed at the right end of the rotating shaft (7); the outer wall of the rotating shaft (7) is provided with threads, and the center of the external mounting plate (6) has a threaded hole that is fitted with the threaded part on the rotating shaft (7).
2. The multi-stage filtration pretreatment device according to claim 1, characterized in that: The front window (5) is closed with a removable transparent glass panel.
3. The multi-stage filtration pretreatment device according to claim 1, characterized in that: The outer wall of the knob (8) has anti-slip grooves.
4. The multi-stage filtration pretreatment device according to claim 1, characterized in that: The lifting unit includes an inner wall groove (102), a rotating screw (103), a spring (104), a bent rod (105), and a connecting shaft (106). The processing box (1) has inner wall grooves (102) on the front and upper sides of its left and right inner walls. The left and right ends of the bent rod (105) are fitted into the inner wall grooves (102), and the outer wall of the end portion is in contact with the inner wall of the inner wall groove (102). The rotating screw (103) is rotatably installed on the bottom surface of the inner wall groove (102) on the left side, and its top end is fixedly connected to the output shaft of the motor (4) that extends into the inner wall groove (102). The spring (104) is fixed on the bottom surface of the inner wall groove (102) on the right side. The part of the left end of the bent rod (105) that is in the inner wall groove (102) is fitted into the rotating screw (103), and the bottom surface of the right end portion is connected to the spring (104).
5. The multi-stage filtration pretreatment device according to claim 1, characterized in that: The pore size of the active filter (107) is 5-15 micrometers.
6. The multi-stage filtration pretreatment device according to claim 1, characterized in that: The internal motor (12) is powered by a battery and controlled by a remote control.