Agitator mechanism and filter for filter bed

Abstract

The application relates to the technical field of purification, and discloses a filter layer stirring mechanism and a filter. The filter layer stirring mechanism comprises a stirring body, the stirring body comprises a rotating shaft and a stirring part arranged on the rotating shaft, the stirring part has a curved section protruding from the rotating shaft, the rotating shaft can drive the stirring part to rotate around the axis of the rotating shaft so that the curved section stirs the filter layer, thereby the structure of the filter layer can be destroyed, and material liquid such as water slurry to be filtered can enter the filter filling layer of the filter to perform a filtering operation. By arranging the filter layer stirring mechanism in the filter, the filter layer deposited on the surface of the filter filling layer can be destroyed, so that the smooth passing of the liquid to be filtered can be ensured.

Description

Technical Field

[0001] This invention relates to the field of purification technology, and more specifically to a filter agitation mechanism and a filter. Background Technology

[0002] Filters are typically filled with filter media to form a media bed. When water slurry passes through the media bed, impurities in the water are trapped by the media bed, thus achieving a purification effect. During the filtration process, a filter layer, also known as a filter cake, easily forms on the surface of the media bed. The filter cake is relatively dense, with pores smaller than those of the filter media. This increases the resistance of the media bed, making it difficult for the water slurry to pass through, affecting filtration efficiency and effect. Especially when the filter cake is thick, it can further obstruct the water slurry from passing through the media bed, making the filtration and purification process ineffective. Summary of the Invention

[0003] The purpose of this invention is to overcome the problem in the prior art that the filter layer formed by filtration prevents the liquid to be filtered from entering the packing bed. The invention provides a stirring mechanism for the filter layer, which has a stirring part with a curved section and rotates under the drive of a rotating shaft to stir the filter layer, thereby disrupting the structure of the filter layer.

[0004] To achieve the above objectives, the present invention provides a filter layer agitation mechanism, the filter layer agitation mechanism including an agitation body, the agitation body including a rotating shaft and an agitation part disposed on the rotating shaft, the agitation part having a curved section protruding from the rotating shaft, the rotating shaft being capable of driving the agitation part to rotate around the axis of the rotating shaft so that the curved section agitates the filter layer.

[0005] The above technical solution, by setting up an agitator with a curved section and a rotating shaft that can drive the agitator to rotate, allows the curved section to agitate the filter layer when the rotating shaft drives the agitator to rotate. This disrupts the structure of the filter layer, allowing the liquid to be filtered, such as water slurry, to enter the filter packing layer of the filter for filtration.

[0006] Preferably, the agitating part is helical in shape, and the agitating part extends helically along the axial direction of the rotation axis, wherein the helical coil of the helical body is formed as the curved section.

[0007] Preferably, the axis of the rotating shaft extends along the thickness direction of the filter layer, and the stirring part includes a plurality of spiral coils, which are distributed along the axial direction of the rotating shaft, and adjacent spiral coils are connected to each other;

[0008] In the direction from the outer surface of the filter layer to the inner surface of the filter layer, the radial dimension of the plurality of spiral coils gradually decreases.

[0009] Preferably, in adjacent spiral coils, the radial dimension of one spiral coil is 0.6-0.9 times the radial dimension of the other spiral coil; and / or

[0010] The radial dimension of the spiral coil with the largest radial dimension is 0.8-0.95 times the maximum radial dimension of the filter layer.

[0011] Preferably, the extended end of the agitator is configured to extend beyond the inner surface of the filter layer.

[0012] Preferably, the agitator has a cavity inside, the cavity has an inlet for the liquid to be filtered to enter, and the agitator has an outlet for the liquid to be filtered to exit.

[0013] Preferably, the cavity extends along the extending direction of the agitator, and the agitator is provided with a plurality of discharge ports, which are spaced apart on the agitator that extends in a spiral shape.

[0014] Preferably, the opening ratio of the plurality of discharge ports is 1%-20%.

[0015] Preferably, the rotating shaft and the agitating part are formed as a single unit.

[0016] A second aspect of the present invention provides a filter, the filter comprising a housing, a filter media layer disposed within the housing, and an agitation mechanism for the filter media layer disposed within the housing and mounted above the filter media layer, wherein the agitation mechanism for the filter media layer is the agitation mechanism for the filter media layer provided by the present invention. By providing the agitation mechanism for the filter media layer provided by the present invention within the filter, the filter media layer deposited on the surface of the filter media layer can be disrupted, thereby ensuring the smooth passage of the liquid to be filtered. Attached Figure Description

[0017] Figure 1 This is a cross-sectional structural diagram of a filter according to a preferred embodiment of the present invention, wherein an agitation mechanism for the filter layer of the preferred embodiment of the present invention is assembled.

[0018] Explanation of reference numerals in the attached figures

[0019] 10-Agitation mechanism of filter layer; 12-Agitation body; 120-Rotating shaft; 122-Agitation section; 122a-Spiral ring; 122b-Discharge port; 14-Drive component; 140-Drive motor; 142-Transmission shaft; 20-Filter; 22a-Filter packing layer; 22b-Filter layer; 24-Outer shell; 240-Neck; 242-Main feed port; 25-Pressure gauge. Detailed Implementation

[0020] In this invention, unless otherwise stated, directional terms such as "up," "down," "left," and "right" are generally understood in conjunction with the accompanying drawings and the orientation shown in actual application, while "inner" and "outer" refer to the inner and outer contours of the component.

[0021] like Figure 1 As shown, the filter 20 includes a housing 24 and a filter media layer 22a disposed within the housing 24, wherein a space is formed above the filter media layer 22a. When the liquid to be filtered is introduced into the filter 20, the liquid passes through the filter media layer 22a, removing impurity particles, thereby purifying the liquid. During the filtration process, a filter layer 22b is formed on the surface of the filter media layer 22a, formed by the accumulation of filtered impurity particles. The filter layer 22b increases the surface resistance of the filter media layer 22a, thereby preventing the liquid from entering the filter media layer 22a.

[0022] This invention provides a filter layer agitation mechanism 10, which includes an agitation body 12. The agitation body 12 includes a rotating shaft 120 and an agitation section 122 disposed on the rotating shaft 120. The agitation section 122 has a curved section protruding from the rotating shaft 120. The rotating shaft 120 can drive the agitation section 122 to rotate around the axis of the rotating shaft 120 so that the curved section agitates the filter layer 22b. By providing the agitation section 122 with the curved section and the rotating shaft 120 capable of driving the agitation section 122 to rotate, the curved section can agitate the filter layer 22b when the rotating shaft 120 drives the agitation section 122 to rotate. This can disrupt the structure of the filter layer 22b, allowing the liquid to be filtered, such as water slurry, to enter the filter packing layer 22a of the filter 20 for filtration. It should be noted that as the thickness of the filter layer 22b increases, the pressure gauge 25 detects the air pressure in the space above the filter layer 22b. As the filtrate occupies this space, the air pressure increases, causing the pressure gauge reading to rise continuously. When the pressure gauge reading exceeds a preset value, which can be set according to actual needs, the controller can control the rotating shaft 120 to rotate the agitator 122, thereby disrupting the structure of the filter layer 22b. Understandably, the pressure gauge reading can be adjusted according to different process conditions, and the rotation speed of the rotating shaft 120 can be set from 0.2 r / min to 5 r / min.

[0023] Additionally, a driving component 14 may be provided, which can drive the rotating shaft 120 to rotate around its axis. The driving component 14 may include a drive motor 140, which has a transmission shaft 142. The rotating shaft 120 can be connected to the transmission shaft 142. Thus, when the drive motor 140 enters the driving program, it can cause the transmission shaft 142 to drive the rotating shaft 120 to rotate around its axis. It should be noted that the transmission shaft 142 and the rotating shaft 120 can be coaxially arranged.

[0024] To make the overall structure of the stirring body 12 more stable, the rotating shaft 120 and the stirring part 122 can be formed as a single piece.

[0025] like Figure 1 As shown, the agitator 122 may be helical in shape, extending helically along the axial direction of the rotation axis 120. It is understood that the helical body has multiple spiral coils 122a distributed along the axial direction of the rotation axis 120, and the spiral coils 122a may be formed as curved sections. By configuring the agitator 122 in a helical shape, the structure of the filter layer 22b can be better disrupted during rotation because each spiral coil of the helical body is tilted relative to the filter layer 22b as a whole.

[0026] The agitating part 122 is helical in shape and may include multiple helical coils 122a. These coils 122a are distributed along the axial direction of the rotation shaft 120, and adjacent coils 122a are connected to each other, causing the agitating part 122 to extend helically along the axial direction of the rotation shaft 120. The axis of the rotation shaft 120 extends along the thickness direction of the filter layer 22b. From the outer surface of the filter layer 22b to its inner surface, the radial dimensions of the multiple helical coils 122a gradually decrease. This not only effectively disrupts the structure of the filter layer 22b, but also, because the radial dimensions of the helical coils 122a near the filter packing layer 22a are smaller, the agitating part 122 will not substantially damage the filter packing layer 22a during rotation. It should be noted that the surface of the filter layer 22b furthest from the filter packing layer 22a is the outer surface of the filter layer 22b, while the surface of the filter layer 22b closest to the filter packing layer 22a is the inner surface of the filter layer 22b.

[0027] like Figure 1 As shown, there may be a spacing h between adjacent spiral coils 122a, which can be considered as the pitch. Multiple spacings h may be equal to each other, that is, multiple spiral coils 122a may be evenly distributed along the axial direction of the rotation axis 120.

[0028] In adjacent spiral coils 122a, the radial dimension of one spiral coil 122a can be set to 0.6-0.9 times the radial dimension of the other spiral coil 122a. This achieves the purpose of destroying the filter layer 22b more effectively and protects the filter packing layer 22a from damage. It is understood that in two adjacent spiral coils 122a, the radial dimension of the lower spiral coil 122a can be 0.6-0.9 times the radial dimension of the upper spiral coil 122a.

[0029] To better disrupt the filter layer 22b, the radial dimension of the spiral coil 122a with the largest radial dimension can be set to 0.8-0.95 times the maximum radial dimension of the filter layer 22b. It should be noted that the spiral coil 122a with the largest radial dimension is the topmost spiral coil 122a; in addition, when the filter layer 22b completely covers the surface of the filter media layer 22a, the filter layer 22b has the largest radial dimension, which is consistent with the inner diameter of the outer shell 24 of the filter 20.

[0030] The extended end of the agitator 122, i.e., the bottom end of the agitator 122, can be configured to extend beyond the inner surface of the filter layer 22b. It is understood that when the agitator 10 of the filter layer is mounted above the filter media layer 22a, the spiral coil 122a at the bottom of the agitator 122 can extend into the filter media layer 22a, thereby effectively disrupting the filter layer 22b deposited on the surface of the filter media layer 22a. Furthermore, since the radial dimension of the spiral coil 122a at the bottom of the agitator 122 is small, it has virtually no impact on the filter media layer 22a. The height of the portion of the agitator 122 extending beyond the inner surface of the filter layer 22b is 1 / 10 to 1 / 2 of the total height of the agitator 122.

[0031] A cavity can be provided inside the agitator 122, with an inlet for the liquid to be filtered to enter and an outlet 122b for the liquid to be filtered to exit. In this way, the agitator 12 can not only disrupt the deposited filter layer 22b, but also act as a feeding mechanism to introduce the liquid to be filtered into the filter 20. It should be noted that a chamber can be formed inside the rotating shaft 120, with an inlet and an outlet. The inlet allows the liquid to be filtered to enter, and the outlet can be connected to the inlet of the cavity. Thus, the liquid to be filtered can be introduced into the cavity of the agitator 122 through the chamber of the rotating shaft.

[0032] Furthermore, the cavity can extend along the extending direction of the agitator 122, that is, the shape of the cavity matches the shape of the agitator. The cavity can also be spiral-shaped, extending spirally along the axial direction of the rotation axis 120. Multiple discharge ports 122b can be provided on the agitator 122, and these ports 122b can be spaced apart on the spirally extending agitator 122, thus ensuring uniform distribution of the liquid. Preferably, the multiple discharge ports 122b are evenly distributed on the spirally extending agitator 122.

[0033] Since the rotating shaft 122 can rotate, the uniformity of the distribution of the liquid discharged from the outlet 122b can be further improved.

[0034] The longitudinal cross-section of the cavity can be triangular, circular, or square. Of course, other shapes can also be set according to actual needs, which will not be elaborated here. The discharge port 122b can be opened on the bottom wall of the stirring part 122 facing the filter layer 22b, which makes it easier for the liquid to be discharged smoothly.

[0035] To further ensure uniform distribution of the liquid and stable discharge, the opening ratio of multiple discharge ports 122b can be 1%-20%.

[0036] The present invention also provides a filter, such as Figure 1 As shown, the filter 20 includes a housing 24, a filter media layer 22a disposed within the housing 24, and a filter layer agitation mechanism 10 disposed within the housing 24 and mounted above the filter media layer 22a. The filter layer agitation mechanism 10 is the filter layer agitation mechanism 10 provided by the present invention. By providing the filter layer agitation mechanism 10 provided by the present invention within the filter 20, the filter layer 22b deposited on the surface of the filter media layer 22a can be disrupted, thereby ensuring filtration efficiency and filtration effect.

[0037] The top of the outer shell 24 may have a neck 240, which is cylindrical. The drive 14 of the agitation mechanism 10 of the filter layer may be mounted on the neck 240. The neck 240 may be provided with a main feed inlet 242. The liquid to be filtered may enter the outer shell 24 through the main feed inlet 242 and enter the cavity of the agitation section 122 through the inlet of the rotating shaft 120, and finally be discharged from the outlet 122b.

[0038] It should be noted that during most of the filtration process, the agitation mechanism 10 of the filter layer remains stationary. At regular intervals, such as 2-4 hours, the agitation mechanism 10 can rotate a certain angle under the drive of the rotating shaft 120 and then stop, causing the outlet 122b to deflect on the projection plane perpendicular to the rotating shaft 120, thereby making the liquid distribution on the surface of the filter packing layer 22a more uniform. When the pressure gauge 25 reading is greater than the preset value, the rotating shaft 120 can rotate at a speed of 0.2r / min-5r / min for a certain period of time and then stop, in order to disrupt the structure of the filter layer 22b, thereby extending the overall working time of the filter 20.

[0039] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings; however, the present invention is not limited thereto. Within the scope of the inventive concept, various simple modifications can be made to the technical solutions of the present invention, including combinations of various specific technical features in any suitable manner. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately. However, these simple modifications and combinations should also be considered as the content disclosed in the present invention and are all within the protection scope of the present invention.

Claims

1. A filter, characterized in that, The filter includes a housing (24), a filter media layer (22a) disposed within the housing (24), and a filter layer agitation mechanism (10) disposed within the housing (24) and mounted above the filter media layer (22a). The filter layer agitation mechanism (10) includes an agitation body (12), which includes a rotating shaft (120) and an agitation section (122) disposed on the rotating shaft (120). The agitation section (122) has a curved section protruding from the rotating shaft (120). The rotating shaft (120) can drive the agitation section (122) to rotate around the axis of the rotating shaft (120) so that the curved section agitates the filter layer (22b). The filter layer (22b) is formed by the accumulation of filtered impurity particles and is formed on the surface of the filter media layer (22a). The agitator (122) has a cavity inside, the cavity has an inlet for the liquid to be filtered to enter, and the agitator (122) has an outlet (122b) on the bottom wall facing the filter layer (22b) for the liquid to be filtered to be discharged. The stirring part (122) is helical in shape and extends helically along the axial direction of the rotation axis (120). The helical coil (122a) of the helical body is formed as the curved section. The stirring part (122) includes a plurality of helical coils (122a), which are distributed along the axial direction of the rotation axis (120). Adjacent helical coils (122a) are connected to each other. The radial dimension of the plurality of helical coils (122a) gradually decreases in the direction from the outer surface of the filter layer (22b) to the inner surface of the filter layer (22b). The extension end of the stirring part (122) is configured to extend beyond the inner surface of the filter layer (22b). The height of the portion of the stirring part (122) extending beyond the inner surface of the filter layer (22b) is 1 / 10 to 1 / 2 of the total height of the stirring part (122).

2. The filter according to claim 1, characterized in that, The axis of the rotating shaft (120) extends along the thickness direction of the filter layer (22b).

3. The filter according to claim 1, characterized in that, In adjacent spiral coils (122a), the radial dimension of one spiral coil (122a) is 0.6-0.9 times the radial dimension of the other spiral coil (122a); and / or The radial dimension of the spiral coil (122a) with the largest radial dimension is 0.8-0.95 times the maximum radial dimension of the filter layer (22b).

4. The filter according to claim 1, characterized in that, The cavity extends along the extension direction of the stirring part (122), and the stirring part (122) is provided with a plurality of discharge ports (122b), which are spaced apart on the stirring part (122) which extends in a spiral shape.

5. The filter according to claim 4, characterized in that, The opening ratio of the plurality of discharge ports (122b) is 1%-20%.

6. The filter according to any one of claims 1-5, characterized in that, The rotating shaft (120) and the stirring part (122) are formed as a single unit.

Images