A recirculation filter device

Abstract

The utility model relates to chemical material filtering technical field, concretely provides a kind of circulating filter device, including filter box and feeding tank, material conveying pipe and circulating pump;Filter box is opened with input and output, and output is communicated with input by material conveying pipeline;Feeding tank and circulating pump are connected in material conveying pipe;Filter bag, deflector are provided in filter box;Filter bag is set on the position of input corresponding to filter box inner wall;Multiple deflectors are layered interval arrangement along the height direction of filter box, one of adjacent two deflectors is connected to the inner wall of one side of filter box, another is connected to the inner wall of other side, and adjacent two deflectors are cross distribution on vertical projection plane, and deflector is inclined downward and is provided with first filter screen.The utility model realizes the circulation of material in filter box by material conveying pipe and circulating pump, and the multistage filtering mechanism of filter bag, deflector and first filter screen is constructed, and the filtering effect and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical material filtration technology, specifically to a circulating filtration device. Background Technology

[0002] In the chemical industry, filtration devices are key equipment used to separate materials from their solid impurities, thereby purifying the materials and ensuring the smooth operation of chemical production.

[0003] However, due to limitations in structural design, current filtration devices often lack the function of recirculating filtration and can only achieve single-pass filtration. Furthermore, existing filtration devices also perform poorly in terms of the effectiveness and efficiency of single-pass filtration. Utility Model Content

[0004] This utility model provides a circulating filtration device that realizes the circulating entry and exit of materials in the filtration box and multi-stage filtration, effectively improving the filtration effect and efficiency. The specific technical solution is as follows:

[0005] The present invention provides a circulating filtration device, comprising: a filter box, a feeding box, a material conveying pipe and a circulating pump located outside the filter box;

[0006] The filter box has an inlet and an outlet, and the outlet is connected to the inlet through the material conveying pipe; the feeding box and the circulating pump are both connected to the material conveying pipe;

[0007] The filter box is provided with a filter bag, a guide plate, and a first filter screen; the filter bag is disposed on the inner wall of the filter box at the position corresponding to the inlet; a plurality of guide plates are arranged in layers at intervals along the height direction of the filter box, one of two adjacent guide plates is connected to one side inner wall of the filter box, and the other is connected to the other side inner wall of the filter box, and adjacent two guide plates are distributed crosswise on the vertical projection plane, all of the guide plates are inclined downward, and the first filter screen is disposed on each of the multiple guide plates.

[0008] In one specific embodiment, each of the guide plates is provided with a plurality of first filters, which are vertically arranged on the top of the guide plate and spaced apart along the inclined direction of the guide plate.

[0009] In one specific embodiment, the angle between the deflector and the horizontal plane is between 10° and 20°.

[0010] In one specific embodiment, a hydrophobic anti-sticking layer is provided on the top of the guide plate.

[0011] In one specific embodiment, the filter box is further provided with a second filter screen, which is connected to the inner wall of the filter box and located between the lowermost guide plate and the output port.

[0012] In one specific embodiment, a third filter screen is provided in the feeding box.

[0013] In one specific embodiment, the circulating filtration device further includes a return pipe, one end of which is connected to the material conveying pipe and connected to the outlet of the circulating pump via the material conveying pipe, and the other end of which extends into the feeding box.

[0014] In one specific embodiment, the top of the feeding box is provided with a feeding port, and the top of the feeding box is covered with a cover plate for blocking the feeding port. The cover plate is provided with a through hole for the return pipe to pass through.

[0015] In one specific embodiment, the output port of the filter box is provided with a three-way valve, the output port is connected to the material conveying pipe through the three-way valve, and the discharge pipe is also connected to the three-way valve.

[0016] In one specific embodiment, the bottom of the filter box and / or the feeding box is provided with a funnel structure.

[0017] This utility model has at least the following beneficial effects:

[0018] This utility model provides a circulating filtration device. By installing filter bags on the inner wall of the filter box corresponding to the inlet, preliminary filtration of the input material is achieved. Multiple inclined guide plates, alternately arranged on opposite inner walls of the filter box, guide the material through each guide plate layer by layer, increasing the flow path of the material inside the filter box. Combined with the first filter screen installed on the guide plates, multiple filtrations of the material are achieved. A circulating pump and material conveying pipe drive the material to circulate in and out of the filter box, ensuring good filtration results in each round, thus achieving multiple high-efficiency circulating filtrations of the material and effectively improving the filtration effect and efficiency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the ring filter device provided in Example 1;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the overall structure of the ring filter device provided in Example 2;

[0023] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0024] Figure label:

[0025] 1-Filter box; 11-Inlet; 12-Outlet; 2-Feeding box; 21-Feeding port; 3-Material conveying pipe; 31-First conveying pipe; 32-Second conveying pipe; 4-Circulating pump; 5-Filter bag; 6-Guide plate; 61-Hydrophobic and anti-sticking layer; 7-First filter screen; 8-Second filter screen; 9-Three-way valve; 10-Discharge pipe; 13-Third filter screen; 14-Return pipe; 15-Valve; 16-Cover plate. Detailed Implementation

[0026] Various embodiments of the present invention will be described more fully below. The present invention may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present invention to the specific embodiments disclosed herein, but rather the present invention should be understood to cover all adjustments, equivalents, and / or alternatives falling within the spirit and scope of the various embodiments of the present invention.

[0027] In the following, the terms “comprising” or “may include”, which may be used in various embodiments of the present invention, indicate the presence of the disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. Furthermore, as used in various embodiments of the present invention, the terms “comprising,” “having,” and their cognates are intended only to indicate a specific feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as primarily excluding the presence of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or the possibility of adding one or more combinations of features, numbers, steps, operations, elements, components, or combinations of the foregoing.

[0028] In various embodiments of this utility model, the expression "or" or "at least one of A and / or B" includes any combination or all combinations of the words listed simultaneously. For example, the expression "A or B" or "at least one of A and / or B" may include A, may include B, or may include both A and B.

[0029] The terms used in the various embodiments of this utility model (such as "first," "second," etc.) may modify various constituent elements in the various embodiments, but do not limit the corresponding constituent elements. For example, the above terms do not limit the order and / or importance of the elements. The above terms are only used for the purpose of distinguishing one element from other elements. For example, a first user device and a second user device refer to different user devices, although both are user devices. For example, without departing from the scope of the various embodiments of this utility model, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element.

[0030] It should be noted that, in this utility model, unless otherwise explicitly specified and defined, terms such as "installation," "connection," and "fixation" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] Example 1

[0032] Please refer to Figure 1 and Figure 2 The circulating filtration device provided in this embodiment includes: a filter box 1 and a feeding box 2 located outside the filter box 1, a material conveying pipe 3 and a circulating pump 4.

[0033] The filter box 1 has an inlet 11 at the top and an outlet 12 at the bottom. The outlet 12 is connected to the inlet 11 via a material conveying pipe 3, forming a circulation loop. This circulation loop allows materials to circulate in and out of the filter box 1, enabling the filter box 1 to filter the materials multiple times. When the material moves in the circulation loop, it first enters the material conveying pipe 3 from the outlet 12, then moves to the inlet 11, and finally returns to the filter box 1 from the inlet 11. After entering the filter box 1, the material, due to its own gravity, eventually moves to the outlet 12 at the bottom, and then re-enters the material conveying pipe 3 through the outlet 12, thus achieving a continuous circulation. The bottom of the filter box 1 can be provided with a funnel structure, and the outlet 12 can be located at the bottom of the funnel structure, allowing the funnel structure to guide the material flow to the outlet 12.

[0034] Both the feeding hopper 2 and the circulating pump 4 are connected to the material conveying pipe 3. The feeding hopper 2, connected to the material conveying pipe 3, is primarily used to feed the material to be filtered into the material conveying pipe 3. For example, the feeding hopper 2 can pre-store the material to be filtered, and a valve (not shown in the figure) can be installed between the feeding hopper 2 and the material conveying pipe 3, thereby controlling the input of the material by opening and closing the valve. The circulating pump 4 is mainly used to provide the power required for the material to move in the circulation loop, driving the material from the lower output port 12 to the higher input port 11 and finally into the filter box 1.

[0035] For example, the specific way in which the circulating pump 4 is connected to the material conveying pipe 3 can be: the material conveying pipe 3 includes a first conveying pipe 31 and a second conveying pipe 32 that are independent of each other. The two ends of the first conveying pipe 31 are respectively connected to the output port 12 of the filter box 1 and the inlet of the circulating pump 4, and the two ends of the second conveying pipe 32 are respectively connected to the outlet of the circulating pump 4 and the input port 11 of the filter box 1.

[0036] Optionally, the circulating pump 4 may include a centrifugal circulating pump, a vortex circulating pump, or a positive displacement circulating pump, etc.

[0037] The filter box 1 is equipped with a filter bag 5, a guide plate 6, and a first filter screen 7. The filter bag 5 is located on the top wall of the filter box 1, corresponding to the inlet 11, for preliminary filtration of the material input from the inlet 11. Multiple guide plates 6 are distributed in layers at intervals along the height h of the filter box 1, with the fixed ends of each guide plate 6 alternately connected to two opposite inner side walls of the filter box 1. Specifically, one of two adjacent guide plates 6 is connected to one inner wall of the filter box 1 (the first inner wall), with its free end extending towards the other inner wall (the second inner wall) but not contacting it; the other of two adjacent guide plates 6 is connected to the second inner wall of the filter box 1, with its free end extending towards the first inner wall but not contacting it. Adjacent guide plates 6 are distributed crosswise on the vertical projection plane. All guide plates 6 are inclined downwards, and each guide plate 6 is equipped with a first filter screen 7.

[0038] Understandably, this asymmetrical, intermittently distributed, downward-sloping arrangement forms a zigzag flow path, causing the material to be filtered to flow spirally downwards along the surface of the multi-layer guide plates 6 within the filter box 1 under the influence of gravity. This extends the filtration path and effectively increases the probability of contact between impurities and the filter media. The upper guide plate 6 guides the material to flow onto the lower guide plate 6, allowing the material to pass through each guide plate 6 layer by layer, and thus be filtered by the first filter screen 7 on each guide plate 6, achieving multiple filtrations of the material.

[0039] In this embodiment, a filter bag 5 is installed on the top wall of the filter box 1 at the position corresponding to the inlet 11, achieving preliminary filtration of the input material. Multiple inclined guide plates 6, alternately arranged on opposite inner walls of the filter box 1, guide the flow direction of the material, allowing it to pass through each guide plate 6 layer by layer, increasing the flow path of the material inside the filter box 1. Combined with the first filter screen 7 installed on the guide plates 6, multiple filtrations of the material are achieved. Based on the combination of preliminary and multiple filtration functions, each round of filtration in the filter box 1 has a good filtration effect. Furthermore, the arrangement of the circulating pump 4 and the material conveying pipe 3 also enables the function of driving the material to circulate in and out of the filter box 1, thereby achieving efficient filtration of the material through multiple cycles, effectively improving the filtration effect and efficiency.

[0040] In this embodiment, each guide plate 6 may be provided with multiple first filter screens 7, which are vertically arranged on the top of the guide plate 6 and spaced apart along the inclined direction of the guide plate 6. Therefore, the material undergoes multiple filtrations as it passes through each guide plate 6, further increasing the number of times the material is filtered in the filter box 1 and improving the filtration effect.

[0041] For example, please refer to Figure 1 Each guide plate 6 may be provided with two first filters 7, one of which is located in the middle of the guide plate 6 and the other is located at the free end of the guide plate 6.

[0042] For example, please refer to Figure 2 The first filter 7 can be detachably fixed to the guide plate 6 by embedding it at the bottom, which makes it easy to disassemble and clean.

[0043] The guide plate 6 can be integrally formed with the filter box 1 by welding, or it can be detachably connected to the inner wall of the filter box 1 by bolts, snap-fit ​​connections, or other methods.

[0044] In this embodiment, please refer again. Figure 1 The angle θ between the guide plate 6 and the horizontal line can be between 10° and 20°. When the angle θ is 10°, the inclination angle of the guide plate 6 is relatively gentle, the flow speed of the material on the guide plate 6 is relatively slow, and the first filter screen 7 can make more full contact with the material, improving the filtration effect. When the angle θ is 20°, the inclination angle of the guide plate 6 is relatively steep, the flow speed of the material on the guide plate 6 is relatively fast, thereby increasing the material circulation speed and increasing the number of times the material circulates in and out of the filter box 1 in the same amount of time.

[0045] Preferably, the angle θ between the guide plate 6 and the horizontal line is 15°.

[0046] In this embodiment, a hydrophobic anti-sticking layer 61 may also be provided on the top of the guide plate 6. Understandably, wet materials such as coatings are very likely to stick to the guide plate 6 during contact, resulting in material residue on the guide plate 6, causing material loss, increased production costs, and difficulty in cleaning after use. Furthermore, material adhesion to the guide plate 6 reduces its flow guiding effect, causing material stickiness and affecting the flow rate, thus reducing the efficiency of material circulation and filtration. In this embodiment, by providing a hydrophobic anti-sticking layer 61 on the top of the guide plate 6, the adhesion between the material and the guide plate 6 can be effectively reduced, causing the material to form droplets on the guide plate 6 and roll off, effectively reducing material adhesion.

[0047] Optionally, the hydrophobic anti-fouling layer 61 may include one or more of a ceramic layer, a fluorocarbon layer, and a polytetrafluoroethylene layer.

[0048] In this embodiment, a second filter screen 8 is also provided in the filter box 1. The second filter screen 8 is connected to the inner wall of the filter box 1 and is located between the bottom guide plate 6 and the outlet 12.

[0049] The second filter 8 provides a final, thorough filtration of the material after the initial filtration by the filter bag 5 and the multiple filtrations by the first filters 7. Working together with the filter bag 5 and the first filters 7, the second filter 8 achieves a multi-stage filtration mechanism with three levels, effectively improving the filtration efficiency.

[0050] In this embodiment, please refer to Figure 1 The output port 12 of the filter box 1 is also equipped with a three-way valve 9, which is connected to the material conveying pipe 3. The three-way valve 9 is also connected to the discharge pipe 10. During use, when the material is in the process of circulating filtration, the three-way valve 9 is disconnected from the discharge pipe 10 and connected to the material conveying pipe 3. The material can circulate in and out of the filter box 1 through the material conveying pipe 3 to achieve circulating filtration. After the circulating filtration is completed, the three-way valve 9 can be operated to connect the three-way valve 9 to the discharge pipe 10 and disconnect the three-way valve 9 from the material conveying pipe 3, so that the material can be discharged from the discharge pipe 10 and collected.

[0051] Optionally, the three-way valve 9 can be a manual valve or a solenoid valve.

[0052] Example 2

[0053] This embodiment is a further improvement on embodiment 1, and the contents described in embodiment 1 will not be repeated in this embodiment.

[0054] Please refer to Figure 3 and Figure 4 The circulating filtration device provided in this embodiment also includes a third filter screen 13 in the feeding box 2.

[0055] Understandably, by setting a third filter screen 13 in the feeding box 2, the material can also be filtered during the feeding process of the feeding box 2, thereby increasing the original three-stage filtration to four-stage filtration, so that the material can be filtered by the filter screen at multiple locations.

[0056] Further, please continue to refer to Figure 3 and Figure 4 The circulating filtration device provided in this embodiment also includes a return pipe 14. One end of the return pipe 14 is connected to the material conveying pipe 3 and is connected to the outlet of the circulating pump 4 via the material conveying pipe 3. The other end of the return pipe 14 extends into the feeding box 2. Thus, the material pumped out of the outlet of the circulating pump 4 will not only move to the inlet 11 of the filter box 1 via the material conveying pipe 3, but will also return to the feeding box 2 via the return pipe 14, so that the material can be circulated and filtered by the third filter screen 13.

[0057] In some cases, a valve 15 can be installed on the return pipe 14. When the valve 15 is open, the third filter screen 13 is added to the circulating filtration process to achieve a four-stage filtration mechanism. When the valve 15 is closed, the material will not return to the feeding box 2 through the return pipe 14, and only a three-stage filtration mechanism is achieved.

[0058] In this embodiment, as Figure 4 As shown, the top of the feeding box 2 may have a feeding port 21, through which the operator can feed the material to be filtered into the feeding box 2 in real time. The top of the feeding box 2 is covered with a cover plate 16 to cover the feeding port 21, and the cover plate 16 has a through hole for the return pipe 14 to pass through. In actual use, when feeding material into the feeding box 2, the cover plate 16 can be opened to expose the feeding port 21; after feeding is completed, the cover plate 16 can be closed again to prevent material from splashing out; the return pipe 14 extends into the feeding box 2 after passing through the through hole, and can normally circulate material into the feeding box 2.

[0059] In this embodiment, as Figure 2 As shown, a funnel structure can be installed at the bottom of the feeding box 2. The design of the funnel structure helps to guide the material into the material conveying pipe 3.

[0060] In summary, the circulating filtration device provided by this utility model embodiment achieves preliminary filtration of the input material by setting a filter bag 5 on the top wall of the filter box 1 corresponding to the input port 11. Multiple inclined guide plates 6, alternately arranged on opposite inner walls of the filter box 1, guide the flow direction of the material, allowing it to pass through each guide plate 6 layer by layer, increasing the flow path of the material inside the filter box 1. Combined with the first filter screen 7 set on the guide plate 6, this achieves multiple filtration of the material. Based on the combination of preliminary and multiple filtration functions, each round of filtration in the filter box 1 has a good filtration effect. Furthermore, the arrangement of the circulating pump 4 and the material conveying pipe 3 also enables the function of driving the material to circulate in and out of the filter box 1, thereby achieving efficient filtration of the material through multiple cycles, effectively improving the filtration effect and efficiency.

[0061] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of a preferred embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this utility model.

[0062] Those skilled in the art will understand that the modules in the apparatus of the implementation scenario can be distributed within the apparatus of the implementation scenario as described, or they can be located in one or more apparatuses different from this implementation scenario, with corresponding changes. The modules of the above-described implementation scenario can be combined into one module, or they can be further divided into multiple sub-modules.

[0063] The serial numbers of the above-mentioned utility models are for descriptive purposes only and do not represent the superiority or inferiority of the implementation scenarios.

[0064] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circulating filtration device, characterized in that, include: The filter box, as well as the feeding box, material conveying pipe and circulation pump located outside the filter box; The filter box has an inlet and an outlet, and the outlet is connected to the inlet through the material conveying pipe; the feeding box and the circulating pump are both connected to the material conveying pipe; The filter box is provided with a filter bag, a guide plate, and a first filter screen; the filter bag is disposed on the inner wall of the filter box at the position corresponding to the inlet; a plurality of guide plates are arranged in layers at intervals along the height direction of the filter box, one of two adjacent guide plates is connected to one side inner wall of the filter box, and the other is connected to the other side inner wall of the filter box, and adjacent two guide plates are distributed crosswise on the vertical projection plane, all of the guide plates are inclined downward, and the first filter screen is disposed on each of the multiple guide plates.

2. The circulating filtration device according to claim 1, characterized in that, Each of the guide plates is provided with a plurality of first filters, which are vertically arranged on the top of the guide plate and spaced apart along the inclined direction of the guide plate.

3. The circulating filtration device according to claim 1, characterized in that, The angle between the guide plate and the horizontal plane is between 10° and 20°.

4. A circulating filtration device according to any one of claims 1 to 3, characterized in that, The top of the guide plate is provided with a hydrophobic and anti-sticking layer.

5. A circulating filtration device according to claim 1, characterized in that, The filter box is also equipped with a second filter screen, which is connected to the inner wall of the filter box and located between the bottom guide plate and the output port.

6. A circulating filtration device according to claim 1, characterized in that, The feeding box is equipped with a third filter screen.

7. A circulating filtration device according to claim 6, characterized in that, The circulating filtration device also includes a return pipe, one end of which is connected to the material conveying pipe and connected to the outlet of the circulating pump via the material conveying pipe, and the other end of which extends into the feeding box.

8. A circulating filtration device according to claim 7, characterized in that, The top of the feeding box has a feeding port, and the top of the feeding box is covered with a cover plate to cover the feeding port. The cover plate has a through hole for the return pipe to pass through.

9. A circulating filtration device according to claim 1, characterized in that, The filter box is equipped with a three-way valve at its output port, which is connected to the material conveying pipe. A discharge pipe is also connected to the three-way valve.

10. A circulating filtration device according to claim 1, characterized in that, The bottom of the filter box and / or the feeding box is provided with a funnel structure.

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