Suction filtration device

Abstract

The utility model discloses a suction filtration device which comprises a suction filtration box, a filtration assembly and an upper cover, a horizontal sealing surface is arranged on the upper side of the suction filtration box, and a water inlet is formed in the sealing surface; the upper cover is arranged above the sealing surface, and the lower edge of the upper cover is horizontal; the filtering assembly comprises a first rotating ring, a second rotating ring, a connecting plate and a plurality of filtering cups; the upper edge of the first rotating ring is in sealed sliding connection with the lower side of the upper cover, the second rotating ring is coaxially and rotationally connected to the lower side of the first rotating ring, the multiple filter cups are fixedly connected into the second rotating ring through connecting plates and are distributed around the axis of the second rotating ring, the filter cups are in sealed sliding connection with the sealing surface, and one filter cup is communicated with the box body through a water inlet; the suction filtration device further comprises a vacuum pump and a water inlet pipe, the vacuum pump is connected with the box body, and one end of the water inlet pipe is located over the water outlet and connected with the upper cover. The utility model provides a suction filtration device which reduces blockage and facilitates cleaning of a filter membrane.

Description

Technical Field

[0001] This utility model relates to the field of environmental testing tools, and in particular to a filtration device. Background Technology

[0002] Vacuum filtration devices are used to filter water samples for environmental testing. Existing vacuum filtration devices, such as those shown in patent application number CN202420733801.8, include a vacuum pump, a filtration chamber, a water tank, and a filter membrane. During sampling, the water sample is placed in the water tank. The vacuum pump removes air from the filtration chamber, creating negative pressure. The water sample in the tank is then filtered through the filter membrane and enters the filtration chamber for testing. While existing vacuum filtration devices can test various water samples, the filter membrane is prone to clogging and is inconvenient to clean. Utility Model Content

[0003] To address the shortcomings of existing vacuum filtration devices where the filter membrane is easily clogged and inconvenient to clean, this invention proposes a vacuum filtration device that reduces clogging and facilitates filter membrane cleaning.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A filtration device includes a filtration box, a filtration assembly, and a top cover. The upper side of the filtration box is provided with a horizontal sealing surface, and an inlet is provided on the sealing surface. The top cover is located above the sealing surface, and the lower edge of the top cover is horizontal.

[0006] The filter assembly includes a first rotating ring, a second rotating ring, a connecting plate, and multiple filter cups; the upper edge of the first rotating ring is slidably and sealingly connected to the lower side of the upper cover, the second rotating ring is rotatably and coaxially connected to the lower side of the first rotating ring, and multiple filter cups are fixedly connected to the second rotating ring through the connecting plate and arranged around the axis of the second rotating ring. The filter cups are slidably and sealingly connected to the sealing surface, and one of the filter cups is connected to the housing through the water inlet.

[0007] The filtration device also includes a vacuum pump and a water inlet pipe. The vacuum pump is connected to the housing, and one end of the water inlet pipe is located directly above the water outlet and connected to the top cover.

[0008] With the above settings, firstly, multiple filter cups are provided, which can be rotated and switched to reduce clogging; secondly, it is convenient to remove the filter assembly for cleaning.

[0009] Furthermore, the filtration box includes a box body, a fixed pipe and a sealing plate. One side of the box body is connected to a vacuum pump. The fixed pipe is vertically fixed to the upper side of the box body. The sealing plate is horizontally fixed to the upper end of the fixed pipe. The upper surface of the sealing plate is the aforementioned sealing surface. The water inlet is installed vertically through the sealing plate.

[0010] Furthermore, the filter cup includes a cup body and a filter screen. The lower end of the cup body is slidably connected to the sealing surface. The cup body of one of the filter cups is located on the water inlet, and the filter screen is installed inside the lower end of the cup body.

[0011] Furthermore, the connecting plate is fixedly connected between the cup body and the second rotating ring to seal the gap between the cup body and the second rotating ring, and the lower side of the connecting plate is slidably connected to the sealing surface.

[0012] Furthermore, there are three filter cups arranged in a circular array around the axis of the second rotating ring. The filter assembly also includes a lever and three markers. The lever is fixedly connected to the outside of the second rotating ring, and the three markers are set on the first rotating ring, corresponding one-to-one with the positions of the three filter cups.

[0013] With the above settings, the lever allows for easy manual rotation of the second rotating ring, and the marker allows for easy control of the rotation angle of the second rotating ring, so that after the second rotating ring rotates, the filter cup can be precisely rotated to the water inlet.

[0014] Furthermore, the filtration device also includes a support assembly, which includes a rotating column and a rotating beam. The rotating column is located on one side of the filtration assembly and is vertically rotatably connected to the filtration box. The rotating beam is horizontally rotatably connected between the first rotating ring and the rotating column.

[0015] The above settings increase the stability of the filter components.

[0016] Furthermore, the chamber is an openable and closable structure, and the filtration device also includes a collection dish installed inside the chamber.

[0017] The above settings facilitate the collection of water samples.

[0018] Furthermore, the filtration device also includes a support frame, with the top cover fixedly connected to the top of the filtration box via the support frame. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the filtration device in an embodiment.

[0020] Figure 2 This is a top view of the filtration apparatus of an embodiment.

[0021] Figure 3 This is a cross-sectional view of the filtration apparatus of an embodiment.

[0022] Figure 4 This is a perspective view of the filtration apparatus of an embodiment.

[0023] Figure 5 This is a schematic diagram of the filter assembly during cleaning in an embodiment. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0025] like Figures 1 to 5 A filtration device includes a filtration box 3, a filtration assembly 4 and a top cover 5. A horizontal sealing surface 6 is provided on the upper side of the filtration box 3, and a water inlet 7 is provided on the sealing surface 6. The top cover 5 is located above the sealing surface 6, and the lower edge of the top cover 5 is horizontal.

[0026] The filter assembly 4 includes a first rotating ring 41, a second rotating ring 42, a connecting plate 43, and multiple filter cups 44. The upper edge of the first rotating ring 41 is slidably and sealed to the lower side of the upper cover 5. The second rotating ring 42 is rotatably and coaxially connected to the lower side of the first rotating ring 41. Multiple filter cups 44 are fixedly connected to the second rotating ring 42 through the connecting plate 43 and arranged around the axis of the second rotating ring 42. The filter cups 44 are slidably and sealed to the sealing surface 6. One of the filter cups 44 is connected to the housing 31 through the water inlet 7.

[0027] The filtration device also includes a vacuum pump 8 and a water inlet pipe 9. The vacuum pump 8 is connected to the housing 31, and one end of the water inlet pipe 9 is located directly above the water outlet and connected to the top cover 5.

[0028] With the above settings, firstly, multiple filter cups 44 are provided, which can be rotated and switched to reduce clogging; secondly, it is convenient to remove the filter assembly 4 for cleaning.

[0029] The top cover 5 of this application is basically a circular, downward-opening lid. Both the first rotating ring 41 and the second rotating ring 42 are annular structures. The inner side of the first rotating ring 41 has an annular groove, and the outer periphery of the second rotating ring 42 is fixedly connected with an annular rib that matches the annular groove. The annular rib is embedded in the annular groove, allowing the second rotating ring 42 to rotate stably under the first annular ring without detaching from it. The outer diameters of the first rotating ring 41 and the second rotating ring 42 are basically the same as those of the top cover 5, and they are coaxially arranged. The upper edge of the first rotating ring 41 fits against the lower edge of the top cover 5, achieving a sealed rotating connection. To increase airtightness, a sealing ring is installed between the first rotating ring 41 and the top cover 5. The lower side of the second rotating ring 42 fits against the sealing surface 6, achieving a seal. A sliding connection is used, and a sealing ring is installed on the lower side of the second rotating ring 42 to increase airtightness. An installation space for installing the filter assembly 4 is formed between the upper cover 5 and the sealing surface 6. The lower side of the upper cover 5, the upper side of the first rotating ring 41, the lower side of the second rotating ring 42, and the sealing surface 6 are all horizontal, and the filter assembly 4 can enter and exit the installation space horizontally. The cross-section of the filter cup 44 is basically circular, and the inlet 7 is a circular opening. The inner diameter of the inlet 7 is basically the same as the inner diameter of the filter cup 44. In this application, one filter cup 44 is located above the inlet 7, and the other filter cups 44 are staggered from the inlet 7. The lower ends of the other filter cups 44 are in contact with the sealing surface 6 to achieve a sealed sliding connection. The air on the upper side of the sealing surface 6 can only flow downward through the filter cup 44 located at the inlet 7.

[0030] When using the filtration device, the free end of the inlet pipe 9 is inserted into the water sample. After the vacuum pump 8 is running, the air in the filtration chamber 3 is extracted. The air above the filter cup 44 flows downward through the inlet 7. After a negative pressure is formed above the filter cup 44, the water sample flows downward through the inlet pipe 9 into the filter cup 44 at the inlet 7. After being filtered by the filter cup 44, the water sample in the filter cup 44 flows downward through the inlet 7 into the filtration chamber 3. However, larger impurities in the water sample remain in the filter cup 44. As filtration proceeds, the amount of impurities remaining in the filter cup 44 increases, and the filtration speed slows down. To prevent clogging, the second rotating ring 42 is manually rotated. The second rotating ring 42 is connected to the connecting plate 43. The moving filter cup 44 rotates around the axis of the second rotating ring 42 until another filter cup 44 rotates to the inlet 7. This filter cup 44 is currently free of impurities, and the water sample can continue to be filtered downwards through it, restoring the filtration speed and preventing clogging. Following the above steps, whenever a filter cup 44 is close to clogging, the second rotating ring 42 is rotated to switch to another filter cup 44 for continued filtration. After the filtration device stops, the water sample in the filtration box 3 is removed for environmental testing. When cleaning the filter assembly 4, it is slid horizontally out of the installation space and removed from between the top cover 5 and the sealing surface 6 for cleaning. After cleaning, the filter assembly 4 is horizontally reinstalled into the installation space. As one implementation, the first rotating ring 41 is made of transparent material, allowing the clogging status of the internal filter cups 44 to be seen, facilitating the switching of filter cups 44 based on their clogging status.

[0031] As one implementation, the vacuum filter box 3 includes a box body 31, a fixed pipe 32 and a sealing plate 33. One side of the box body 31 is connected to the vacuum pump 8. The fixed pipe 32 is vertically fixedly connected to the upper side of the box body 31. The sealing plate 33 is horizontally fixedly connected to the upper end of the fixed pipe 32. The upper surface of the sealing plate 33 is the aforementioned sealing surface 6. The water inlet 7 is vertically and horizontally connected to the sealing plate 33.

[0032] The housing 31, the fixed tube 32, and the sealing plate 33 of this application are integrally formed. The fixed tube 32 is a circular tube structure, and its outer diameter is adapted to the outer diameter of the second rotating ring 42. When the filter assembly 4 is installed in the installation space, the outer side of the second rotating ring 42 is flush with the outer side of the fixed tube 32. The sealing plate 33 is a circular plate adapted to the fixed tube 32 and is horizontally fixedly connected to the upper end of the fixed tube 32. The water inlet 7 is set on one side of the center of the sealing plate 33 so that the water inlet 7 cooperates with one of the filter cups 44.

[0033] In one implementation, the filter cup 44 includes a cup body 441 and a filter screen 442. The lower end of the cup body 441 is slidably connected to the sealing surface 6. The cup body 441 of one filter cup 44 is located on the water inlet 7, and the filter screen 442 is installed inside the lower end of the cup body 441.

[0034] The height of the cup body 441 in this application is greater than or equal to 4cm, and the water sample output from the inlet pipe 9 will not overflow after entering the filter cup 44.

[0035] As one implementation, the connecting plate 43 is fixedly connected between the cup body 441 and the second rotating ring 42 to seal the gap between the cup body 441 and the second rotating ring 42, and the lower side of the connecting plate 43 is slidably connected to the sealing surface 6.

[0036] The second rotating ring 42, connecting plate 43, and cup body 441 of this application are integrally formed structures. The connecting plate 43 ensures that the air and water sample on the upper side of the filter cup 44 can only move downward through the filter cup 44 at the air inlet.

[0037] In one implementation, three filter cups 44 are arranged in a circular array around the axis of the second rotating ring 42. The filter assembly 4 also includes a paddle 14 and three markers 10. The paddle 14 is fixedly connected to the outside of the second rotating ring 42, and the three markers 10 are set on the first rotating ring 41, corresponding one-to-one with the positions of the three filter cups 44.

[0038] With the above settings, the lever 14 allows for easy manual rotation of the second rotating ring 42, and the mark 10 allows for easy control of the rotation angle of the second rotating ring 42, so that after the second rotating ring 42 rotates, the filter cup 44 can be accurately rotated to the water inlet 7.

[0039] As one implementation, the filtration device also includes a support assembly 11, which includes a rotating column 111 and a rotating beam 112. The rotating column 111 is disposed on one side of the filter assembly 4 and is vertically rotatably connected to the filtration box 3. The rotating beam 112 is horizontally rotatably connected between the first rotating ring 41 and the rotating column 111.

[0040] The above settings increase the stability of filter component 4.

[0041] The support component 11 of this application supports the filter component 4 and maintains the stability of the filter component 4 during filtration. When the filter component 4 needs to be cleaned, the filter component 4 rotates 180 degrees around the axis of the rotating column 111, and the filter component 4 moves away from the upper cover 5 and the sealing surface 6. Then the filter component 4 rotates 180 degrees around the rotating beam 112, so that the filter cup 44 faces downward, which facilitates backwashing of the filter screen 442 and cleaning of the filter component 4.

[0042] As one implementation, the housing 31 is an openable and closable structure, and the filtration device also includes a collection dish 12 disposed in the housing 31.

[0043] The above settings facilitate the collection of water samples.

[0044] The housing 31 of this application specifically includes a main body and a sealing cover. The sealing cover is sealed and installed on the upper side of the main body, similar to a rice cooker. After the sealing cover is opened, the collection dish 12 can be placed in and out. The vacuum pump 8 is connected to the side of the sealing cover and is higher than the collection dish 12.

[0045] As one implementation method, the filtration device also includes a support 13, and the upper cover 5 is fixedly connected to the upper part of the filtration box 3 via the support 13.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A suction filtration apparatus, characterized in that, The filter includes a filtration box, a filtration assembly, and a top cover. The filtration box has a horizontal sealing surface on its upper side and a water inlet on the sealing surface. The top cover is located above the sealing surface and has a horizontal lower edge. The filter assembly includes a first rotating ring, a second rotating ring, a connecting plate, and multiple filter cups; the upper edge of the first rotating ring is slidably and sealingly connected to the lower side of the upper cover, the second rotating ring is rotatably and coaxially connected to the lower side of the first rotating ring, and the multiple filter cups are fixedly connected to the second rotating ring through the connecting plate and arranged around the axis of the second rotating ring. The filter cups are slidably and sealingly connected to the sealing surface, and one of the filter cups is connected to the housing through the water inlet. The filtration device also includes a vacuum pump and a water inlet pipe. The vacuum pump is connected to the housing, and one end of the water inlet pipe is located directly above the water outlet and connected to the top cover.

2. A filtration device according to claim 1, wherein The filtration box includes a box body, a fixed pipe and a sealing plate. One side of the box body is connected to a vacuum pump. The fixed pipe is vertically fixed to the upper side of the box body. The sealing plate is horizontally fixed to the upper end of the fixed pipe. The upper surface of the sealing plate is the aforementioned sealing surface. The water inlet is vertically and horizontally disposed on the sealing plate.

3. A filtration device according to claim 2, wherein, The filter cup includes a cup body and a filter screen. The lower end of the cup body is slidably connected to a sealing surface. The cup body of one filter cup is located on the water inlet, and the filter screen is installed inside the lower end of the cup body.

4. A filtration device according to claim 3, wherein The connecting plate is fixedly connected between the cup body and the second rotating ring to seal the gap between the cup body and the second rotating ring, and the lower side of the connecting plate is slidably connected to the sealing surface.

5. A filtration device according to claim 1, wherein The filter cups are provided in three and arranged in a circular array around the axis of the second rotating ring. The filter assembly also includes a lever and three marks. The lever is fixedly connected to the outside of the second rotating ring, and the three marks are set on the first rotating ring, corresponding one-to-one with the positions of the three filter cups.

6. A filtration device according to claim 1, wherein The filtration device further includes a support assembly, which includes a rotating column and a rotating beam. The rotating column is disposed on one side of the filtration assembly and is vertically rotatably connected to the filtration box. The rotating beam is horizontally rotatably connected between the first rotating ring and the rotating column.

7. A filtration device according to claim 2, wherein The housing is an openable and closable structure, and the filtration device also includes a collection dish disposed in the housing.

8. A filtration device according to claim 1, wherein The filtration device also includes a support frame, and the upper cover is fixedly connected to the top of the filtration box via the support frame.

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