Filtering device

Abstract

The utility model belongs to the technical field of coating, and discloses a filtering device which comprises a shell, a liquid supply assembly, a filtering assembly, a pneumatic conveying assembly and a collecting tank. The liquid supply assembly comprises an end cover and a first tank body with an opening end, a solution to be filtered can be placed in the first tank body, a liquid outlet pipeline is arranged on the end cover in a sealing and penetrating mode, one end of the liquid outlet pipeline is located in the first tank body and extends to the bottom of the first tank body, and the filtering assembly is communicated with the other end of the liquid outlet pipeline; the pneumatic conveying assembly is used for conveying gas into the first tank body so as to convey a to-be-filtered solution in the first tank body to the filtering assembly for filtering the solution, and the collecting tank is used for collecting the solution filtered by the filtering assembly so as to remove crystals formed in the to-be-filtered solution, so that the condition that the film forming quality is influenced by the existence of the crystals is avoided; and moreover, the condition that a large amount of solution remains in a long pipeline is avoided, the waste of the solution is reduced, and the use cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to coating technology field especially relates to a filter device. BACKGROUND

[0002] With the rapid development of new energy, perovskite solar cells have been widely used due to their high photoelectric conversion efficiency, long service life, low preparation cost and other advantages.

[0003] As an important component of perovskite solar cells, perovskite liquid membranes are currently prepared by slot coating technology. During the preparation of perovskite liquid membranes, the prepared perovskite liquid is manually added to the solution tank of the coating machine, or the prepared perovskite liquid is automatically added to the solution tank of the coating machine by a solution cabinet, and then the coating is extracted by a precision pump. Since the perovskite solution is expensive and prone to crystallization, the manual liquid adding method cannot remove the formed crystals, affecting the quality of film formation and reducing the product pass rate. The automatic liquid adding method requires the liquid supply machine to be placed far away from the coating machine, so a long pipeline is needed to connect the solution tank of the coating machine to transport the solution in the liquid supply machine to the solution tank of the coating machine. Therefore, a large amount of perovskite solution is left in the pipeline, resulting in resource waste and high cost.

[0004] Therefore, there is an urgent need for a filter device to solve the above problems. INVENTION CONTENTS

[0005] The utility model aims at providing a filter device to solve the problem that the existing technology cannot simultaneously remove the crystals formed in the solution, affect the quality of film formation, and cause a large amount of solution to remain in the pipeline, resulting in high cost.

[0006] According to the above idea, the technical scheme adopted by the utility model is as follows:

[0007] The filter device comprises:

[0008] a housing;

[0009] a liquid supply assembly comprising an end cap and a first tank body with an open end, the first tank body being capable of placing the solution to be filtered, the end cap being detachably sealed and capped at the open end of the first tank body, a liquid outlet pipeline being provided through the end cap, one end of the liquid outlet pipeline being located in the first tank body and extending to the bottom of the first tank body;

[0010] a filter assembly located in the housing, the filter assembly being in communication with the other end of the liquid outlet pipeline for filtering the solution to be filtered;

[0011] a pneumatic conveying assembly for conveying gas into the first tank body to convey the solution to be filtered in the first tank body to the filter assembly;

[0012] a collecting tank located in the housing for collecting the solution filtered by the filter assembly.

[0013] Further, the liquid supply assembly further comprises a second tank body having an open end, the second tank body is located in the first tank body, the second tank body is used for containing the solution to be filtered, one end of the liquid outlet pipeline is located in the second tank body and extends to the bottom of the second tank body.

[0014] Further, the liquid outlet pipeline comprises a liquid outlet pipe and a liquid outlet pipe joint connected with each other, one end of the liquid outlet pipe joint extends to the bottom of the second tank body through the liquid outlet pipe, and the other end of the liquid outlet pipe joint communicates with one end of the filter assembly.

[0015] Further, a fixing seat is arranged in the housing, the fixing seat is located at the bottom of the housing, first and second limiting grooves are arranged on the fixing seat in a spaced manner, one end of the first tank body away from the open end thereof is matched with the first limiting groove, and one end of the collecting tank away from the open end thereof is matched with the second limiting groove.

[0016] Further, a first limiting member is further fixed at the bottom of the housing, the fixing seat is a rectangular member, two adjacent sides of the fixing seat are in abutment with the inner side of the housing, and the other two adjacent sides of the fixing seat are in abutment with the first limiting member.

[0017] Further, an installation plate is further arranged in the housing, and the filter assembly is installed on the installation plate.

[0018] Further, the filter assembly comprises a first connecting pipe, a filter member and a second connecting pipe which are detachably connected, in a first direction, the first connecting pipe and the second connecting pipe are respectively located at two ends of the filter member, one end of the first connecting pipe away from the filter member communicates with the other end of the liquid outlet pipeline, and one end of the second connecting pipe away from the filter member is used for discharging the filtered solution.

[0019] Further, the installation plate is provided with a first open groove, the second connecting pipe is arranged in the first open groove and can move into or out of the first open groove in a second direction, and one end of the filter member away from the first connecting pipe is in abutment with the installation plate.

[0020] Further, the filter device further comprises a second limiting member connected with the mounting plate, and the filter member is abutted against the second limiting member away from one end of the second connecting pipe, the second limiting member is provided with a second open slot, the first connecting pipe is arranged in the second open slot and can be moved into or out of the second open slot along a second direction.

[0021] Further, one side of the shell is rotationally connected with a door body, and a plurality of exhaust holes are arranged on the side of the shell opposite to the door body.

[0022] Further, a pressure relief valve is further sealingly arranged on the end cover and is communicated with the first tank body.

[0023] The filter device has the following beneficial effects:

[0024] The utility model provides a filter device, filter device includes casing, liquid supply component, filter component pneumatic conveying component and collection jar. Liquid supply component includes end cover and first tank body with open end, and end cover detachable sealing cover is arranged in the open end of first tank body, and end cover sealingly passes through and is arranged with liquid outlet pipeline, and one end of liquid outlet pipeline is located in first tank body and extends to the bottom of first tank body, and filter component is located in casing, and filter component is communicated with the other end of liquid outlet pipeline, and is used for filtering the solution to be filtered, and pneumatic conveying component is used for conveying gas to first tank body, so as to convey the solution to be filtered in first tank body to filter component, and collection jar is located in casing and is used for collecting the solution filtered by filter component. Pneumatic conveying component is used for conveying gas to first tank body, and the air pressure in first tank body gradually increases, and then drives the solution to be filtered in first tank body to filter component, to filter the solution to be filtered, and then the collection jar collects the filtered solution, removes the formed crystal in the solution to be filtered, avoids the existence of crystal from affecting the quality of film forming, improves the qualified rate of product, and the filtered solution can be directly used for coating machine, and there is no need to arrange long pipeline to connect the solution tank of coating machine, avoids setting long pipeline, avoids the situation that a large amount of solution is left in the pipeline, reduces the waste of solution and reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the description of the embodiments of the utility model will be briefly introduced, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the utility model and these drawings without paying creative labor.

[0026] Figure 1 It is the structural schematic diagram of the filter device provided by the embodiments of the utility model;

[0027] Figure 2 is a structural schematic view of another perspective of the filter device provided by the embodiment of the present application;

[0028] Figure 3 is Figure 2 is a local enlarged view of position A in the middle;

[0029] Figure 4 is a structural schematic view of another state of the filter device provided by the embodiment of the present application;

[0030] Figure 5 is a structural schematic view of the mounting plate and the second limiting member provided by the embodiment of the present application;

[0031] Figure 6 is a structural schematic view of another perspective of the filter device provided by the embodiment of the present application.

[0032] in the figure:

[0033] 1, shell; 11, mounting groove; 12, door body; 13, exhaust hole; 14, hinge; 15, handle; 2, liquid supply assembly; 21, first tank body; 22, end cover; 23, second tank body; 24, liquid outlet pipeline; 241, liquid outlet pipe joint; 242, on-off valve; 26, pressure relief valve; 3, filter assembly; 31, first connecting pipe; 32, filter member; 33, second connecting pipe; 4, pneumatic conveying assembly; 41, pressure regulating valve; 42, air inlet pipe joint; 5, collection tank; 6, fixing seat; 61, first limiting groove; 62, second limiting groove; 7, first limiting member; 8, mounting plate; 81, first opening groove; 82, pipeline communication member; 9, second limiting member; 91, second opening groove. DETAILED DESCRIPTION

[0034] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the present application will be further described below in combination with the drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, but not limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, but not all.

[0035] It should be noted that: similar signs and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0036] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication or two element's mutual action relation. For ordinary skilled in the art, the above-mentioned term can be understood in the utility model according to the specific meaning of the specific situation.

[0037] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but contact through the additional feature between them. Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature is less than the second feature in horizontal height. In the description of the embodiment, if not special, "multiple" specifically refers to two or more than two.

[0038] In the description of the embodiment, the term "on", "under", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawing, just for the convenience of description and simplification operation, and not indicate or imply that the device or element referred to must have a particular orientation, with a particular orientation and operation, therefore, cannot be understood as a restriction on the utility model. In addition, the terms "first", "second" are just used to distinguish in the description, and have no special meaning.

[0039] It should be noted that when an element is referred to as "fixed to" or "provided on" another element, it can be directly on another element or there can be a middle element.

[0040] The technical scheme of the utility model is further illustrated below by combining the drawings and through specific embodiments.

[0041] The embodiment provides a filtering device, filters the solution to be filtered to remove the formed crystal in the solution to be filtered, avoids the case that the film forming quality is influenced due to the existence of the crystal, improves the qualified rate of product, and avoids the case that a long pipeline is arranged and a large amount of solution is left in the pipeline, reduces the waste of solution, and reduces the use cost.

[0042] As Figures 1-2As shown, the utility model provides a kind of filtering device, the filtering device includes shell 1, liquid supply component 2, filter component 3, pneumatic conveying component 4 and collection tank 5.Filter component 3 and collection tank 5 are located in shell 1, pneumatic conveying component 4 can carry out gas pressurization to the solution to be filtered in liquid supply component 2, to filter component 3 to be filtered solution is delivered to carry out filtration, filtered solution is discharged to collection tank 5 inside.Specifically, liquid supply component 2 includes end cap 22 and the first tank body 21 with open end, the solution to be filtered can be placed in the first tank body 21, end cap 22 is detachably sealed cover and is arranged in the open end of first tank body 21, end cap 22 is sealed and is provided with liquid outlet line 24, air inlet line, one end of liquid outlet line 24 is located in the first tank body 21 and extends to the bottom of first tank body 21, filter component 3 is communicated with the other end of liquid outlet line 24, for filtering the solution to be filtered, pneumatic conveying component 4 is used to deliver gas to the first tank body 21, to deliver the solution to be filtered in the first tank body 21 to filter component 3, collection tank is used to collect the solution filtered after filter component 3.In use, the first tank body 21 is placed in shell 1 along the first direction, filter component 3 and the other end of liquid outlet line 24 are communicated by connecting line (not shown in drawing), it can be understood that pneumatic conveying component 4 is used to deliver gas to the first tank body 21, since end cap 22 is sealed to the open end of first tank body 21, the air pressure in the first tank body 21 gradually increases, to drive the solution to be filtered in the first tank body 21 into the liquid outlet line 24 threaded in end cap 22, until moving to filter component 3, to filter the solution to be filtered, remove the crystallization formed in the solution to be filtered, avoid the existence of crystallization to affect the quality of film forming, improve the qualified rate of product, and, filtered solution can be directly used for coating machine, without arranging relatively long line to connect coating machine solution tank, avoid the existence of a large amount of solution residual in long line, reduce the waste of solution, reduce use cost.In addition, one end of liquid outlet line 24 extends to the bottom of first tank body 21, avoids the situation that a large amount of solution in the first tank body 21 cannot be filtered due to too short liquid outlet line 24.

[0043] Exemplarily, pneumatic conveying component 4 includes sequentially connected gas source (not shown in drawing), driving member (not shown in drawing) and air inlet line (not shown in drawing), driving member can be air pump, gas source is nitrogen source, air pump and air inlet line are communicated, one end of air inlet line is communicated with first tank body 21, so that air pump extracts nitrogen to air inlet line, and then is delivered to first tank body 21.Liquid supply component 2 includes detachable clamp (not shown in drawing), clamp is fixed to end cap 22 and first tank body 21 simultaneously, to realize detachable connection of end cap 22 and first tank body 21.For the specific structure of gas source, air pump, air inlet line and clamp, it is prior art, and the embodiment does not specifically limit it.

[0044] Further, as shown in Figure 2 , the collecting tank 5 is placed in the housing 1 along the first direction, and the collecting tank 5 can be a solution tank directly mounted on the coating machine. After the filtered solution is collected, the collecting tank 5 can be directly mounted on the coating machine for coating, which is convenient to operate.

[0045] Exemplarily, the collecting tank 5 has an open end, one end of the filtering assembly 3 is communicated with the liquid outlet pipeline 24, and the other end of the filtering assembly 3 is communicated with the open end of the collecting tank 5 through the connecting pipeline to transport the filtered solution into the collecting tank 5. In this embodiment, a bottle plug (not shown in the figure) is further arranged at the open end of the collecting tank 5, and a solution passage (not shown in the figure) is arranged on the bottle plug, the solution passage is communicated with the collecting tank 5, and the solution passage is communicated with the other end of the filtering assembly 3 through the connecting pipeline. It can be understood that the arrangement of the bottle plug and the solution passage can reduce the risk of solution spilling during the process of transporting the collecting tank 5 to the coating machine after the solution is collected, and facilitates the docking of the collecting tank 5 and the liquid inlet structure on the coating machine.

[0046] Further, as shown in Figure 4 , the liquid supply assembly 2 further comprises a second tank body 23 having an open end, and the second tank body 23 is located in the first tank body 21. One end of the liquid outlet pipeline 24 is located in the second tank body 23 and extends to the bottom of the second tank body 23. Specifically, the second tank body 23 is placed in the first tank body 21 along the first direction. It can be understood that by arranging the second tank body 23, when the driving member transports the gas into the first tank body 21, the gas in the first tank body 21 will enter the second tank body 23, thereby driving the solution in the second tank body 23 to move to the filtering assembly 3 through the liquid outlet pipeline 24 for filtering.

[0047] It can be further conceived that the second tank body 23 is used as a tank body for placing the solution to be filtered. In order to avoid excessive solution to be filtered remaining in the tank body and to ensure the corrosion resistance of the tank body, the material and manufacturing process of the second tank body 23 have certain requirements, and the manufacturing cost is relatively high. The first tank body 21 only needs to meet the sealing requirement, and the manufacturing cost of the first tank body 21 is relatively low. Therefore, based on the arrangement of the first tank body 21, the second tank body with a smaller specification than the first tank body 21 is arranged, which is beneficial to saving the production cost.

[0048] Exemplarily, a plurality of second tank bodies 23 can be arranged, and the plurality of second tank bodies 23 can be pre-filled with the solution to be filtered. When the solution to be filtered in the second tank body 23 being used has been completely filtered, the prepared second tank body 23 can be directly replaced, so as to improve the filtering efficiency.

[0049] Further, with reference to Figure 2 and Figure 4The liquid outlet pipeline 24 comprises a liquid outlet pipe (not shown in the figure) and a liquid outlet pipe joint 241 connected to each other. One end of the liquid outlet pipe joint 241 extends to the bottom of the second tank body 23 through the liquid outlet pipe, and the other end of the liquid outlet pipe joint 241 communicates with one end of the filter assembly 3. Specifically, the liquid outlet pipe joint 241 is sealingly provided through the end cover 22. It can be understood that the liquid outlet pipeline 24 is provided as the liquid outlet pipe and the liquid outlet pipe joint 241 connected to each other. Under the premise of ensuring normal liquid outlet, the stability of the connection between the liquid outlet pipe joint 241 and the end cover 22 is higher than that of the liquid outlet pipe directly provided through the end cover 22. Even if the first tank body 21 is in a high-pressure state, the sealing property of the first tank body can be ensured, and the stability is high. In addition, a control switch communicating with the liquid outlet pipe joint 241 can be provided to control the flow state of the solution.

[0050] Exemplarily, as shown in Figure 2 and Figure 4 , in the present embodiment, the liquid outlet pipe joint 241 is a clamping sleeve type liquid outlet pipe joint, which is clamped to the end cover 22 and provided through the end cover. For the specific structure of the clamping sleeve type liquid outlet pipe joint, it is prior art, and the present embodiment does not make specific limitation thereon. The liquid outlet pipeline 24 further comprises a switch valve 242 (i.e. a control switch). The outer side of the shell 1 is provided with a mounting groove 11, a handle (not shown in the figure) of the switch valve 242 is located in the mounting groove 11, a valve rod (not shown in the figure) of the switch valve 242 is provided through the side wall of the shell 1, a valve body (not shown in the figure) of the switch valve 242 is located in the shell 1, the other end of the liquid outlet pipe joint 241 communicates with a liquid inlet end (not shown in the figure) of the valve body of the switch valve 242 through a connecting pipeline, a liquid outlet end (not shown in the figure) of the valve body of the switch valve 242 communicates with the filter assembly 3 through a connecting pipeline. By rotating the handle of the switch valve 242, the switch valve 242 can be opened or closed, thereby controlling the flow state of the solution. The handle of the switch valve 242 is arranged in the mounting groove 11, which is convenient for the use of the operator. For the specific structure and opening and closing mode of the switch valve 242, it is prior art, and the present embodiment does not make specific limitation thereon. Of course, in other embodiments, in order to save labor, the opening and closing of the switch valve 242 can also be realized by electromagnetic driving or electric driving.

[0051] Further, with reference to Figure 2The pneumatic conveying assembly 4 further comprises a pressure regulating valve 41 arranged in the mounting groove 11, the on-off valve 242 and the pressure regulating valve 41 are arranged in the first direction, and the pressure regulating valve 41 is used for adjusting the pressure value in the first tank body 21. It can be understood that, by adjusting the pressure value in the first tank body 21 through the pressure regulating valve 41, it can be avoided that the pressure value in the first tank body 21 is too large or too small, so as to avoid explosion due to the pressure value in the first tank body 21 being too large, or the pressure value in the first tank body 21 being too small to normally drive the solution to be filtered to move to the filter assembly 3, thereby ensuring the normal operation of the filter device. At the same time, arranging the pressure regulating valve 41 in the mounting groove 11 is convenient for the use of the operator. Exemplarily, the air inlet end of the pressure regulating valve 41 is communicated with the driving member through a connecting pipeline, and the air outlet end of the pressure regulating valve 41 is communicated with the other end of the air inlet pipeline.

[0052] Further, as shown in Figure 2 and Figure 4 , the pneumatic conveying assembly 4 further comprises an air inlet pipe joint 42, the air inlet pipe joint 42 is sealingly arranged in the end cover 22, one end of the air inlet pipe joint 42 is communicated with the first tank body 21, and the other end of the air inlet pipe joint 42 is communicated with one end of the air inlet pipeline. It can be understood that, by arranging the air inlet pipe joint 42, the air inlet pipeline is communicated with the first tank body 21, the air inlet pipe joint 42 is sealingly arranged in the end cover 22, and the air inlet pipeline cannot be separated from the first tank body 21 due to the high internal pressure of the first tank body 21, and the stability is high. Exemplarily, the air inlet pipe joint 42 can be a threaded pipe joint, a buckle type pipe joint, etc., which can be determined according to actual use requirements, and the present embodiment does not make specific limitation thereto.

[0053] Further, as shown in Figure 2 and Figure 4 , the housing 1 is provided with a fixing seat 6, the fixing seat 6 is located at the bottom of the housing 1, the fixing seat 6 is provided with a first limiting groove 61 and a second limiting groove 62, one end of the first tank body 21 away from the opening end thereof is matched with the first limiting groove 61, and one end of the collecting tank 5 away from the opening end thereof is matched with the second limiting groove 62. It can be understood that, the first limiting groove 61 and the second limiting groove 62 respectively limit the first tank body 21 and the collecting tank 5, since the amount of solution in the first tank body 21 and the collecting tank 5 is in a state of change, the first tank body 21 and the collecting tank 5 can be unstable, and thus the stability of the first tank body 21 and the collecting tank 5 during solution filtration is improved.

[0054] Exemplarily, the first limiting groove 61 is shaped to match the shape of the end of the first tank body 21 away from the open end thereof, the end of the first tank body 21 away from the open end thereof is located in the first limiting groove 61, and the second limiting groove 62 is shaped to match the shape of the end of the collecting tank 5 away from the open end thereof, the end of the collecting tank 5 away from the open end thereof is located in the second limiting groove 62, so as to further improve the limiting effect on the first tank body 21 and the collecting tank 5.

[0055] Further, as shown in Figure 2 , the bottom of the shell 1 is further fixed with a first limiting piece 7, the fixing seat 6 is a rectangular piece, and the two adjacent sides of the fixing seat 6 are in abutment with the inner side of the shell 1, and the other two adjacent sides of the fixing seat 6 are in abutment with the first limiting piece 7. It can be understood that the first limiting piece 7 cooperates with the inner surface of the shell 1 to limit the fixing seat 6 in the direction perpendicular to the plane in which the first direction is located, thereby improving the stability of the fixing seat 6. Since the first limiting groove 61 and the second limiting groove 62 are arranged on the fixing seat 6, the stability of the first tank body 21 and the collecting tank 5 is further improved.

[0056] Exemplarily, the first limiting piece 7 comprises a first limiting plate (not shown in the figure) and a second limiting plate (not shown in the figure) connected with each other, the first limiting plate and the second limiting plate are welded, and the first limiting plate and the second limiting plate are in abutment with the other two adjacent sides of the fixing seat 6, respectively, and the first limiting plate and the second limiting plate are welded to the bottom of the shell 1.

[0057] It can be understood that in the first direction, the fixing seat 6 can move relative to the bottom of the shell 1, when it is necessary to clean or replace the fixing seat 6, the fixing seat 6 can be driven to move in the first direction, thereby taking out the fixing seat 6, which is convenient to operate, easy to clean, and can be quickly positioned.

[0058] Further, as shown in Figure 2 , Figure 3 , Figure 5 , the shell 1 is further provided with a mounting plate 8, and the filtering assembly 3 is mounted on the mounting plate 8. The filtering assembly 3 comprises a first connecting pipe 31, a filtering piece 32 and a second connecting pipe 33 which are detachably connected. In the first direction, the first connecting pipe 31 and the second connecting pipe 33 are located at two ends of the filtering piece 32, respectively. One end of the first connecting pipe 31 away from the filtering piece 32 is in communication with the other end of the liquid outlet pipeline 24, and one end of the second connecting pipe 33 away from the filtering piece 32 is used for discharging the filtered solution. It can be understood that the filtering assembly 3 is mounted on the mounting plate 8 to position the filtering assembly 3. By arranging the first connecting pipe 31, the filtering piece 32 and the second connecting pipe 33 which are detachably connected, the filtering assembly 3 is facilitated to be in communication with the liquid outlet pipeline 24, and the filtering piece 32 is facilitated to be cleaned or replaced, which is convenient to use.

[0059] Further, the mounting plate 8 is provided with a first open slot 81, the second connecting pipe 33 is arranged in the first open slot 81 and can be moved into or out of the first open slot 81 along the second direction, and one end of the filter element 32 away from the first connecting pipe 31 abuts against the mounting plate 8. It can be understood that when the second connecting pipe 33 is arranged in the first open slot 81, the mounting plate 8 supports the filter element 32, so that the filter element 32 is located at a predetermined position, thereby facilitating the setting of the relative position of the filter assembly 3 and the collection tank 5. Exemplarily, in the first direction, the filter assembly 3 is located above the collection tank 5, so as to facilitate the collection tank 5 to collect the filtered solution.

[0060] Exemplarily, one end of the first connecting pipe 31 away from the filter element 32 communicates with the liquid outlet pipe joint 241 through a connecting pipe, and one end of the second connecting pipe 33 away from the filter element 32 communicates with the collection tank 5 through a connecting pipe.

[0061] Further, as shown in Figure 4 , the mounting plate 8 is provided with a pipe communication member 82 fixed to the mounting plate 8, the two-part connecting pipe between the one end of the first connecting pipe 31 away from the filter element 32 and the liquid outlet pipe joint 241 is connected through the pipe communication member 82, the pipe communication member 82 is arranged in the mounting plate 8 and has a fixing effect on the two-part connecting pipe, thereby improving the connection stability of the connecting pipe between the first connecting pipe 31 and the liquid outlet pipe joint 241.

[0062] Further, the filter element 32 comprises a filter housing (not shown in the figure) and a filter layer (not shown in the figure), and the filter housing is provided with a containing cavity (not shown in the figure) and the filter layer is located in the containing cavity. In this embodiment, two containing cavities and two filter layers are arranged in the filter element 32, and the two filter layers are respectively located in the corresponding containing cavities, so as to improve the filtering effect on the solution and further ensure the quality of film formation during solution coating.

[0063] Further, as shown in Figure 3 and Figure 5 , the filter device further comprises a second limiting member 9 connected with the mounting plate 8, one end of the filter element 32 away from the second connecting pipe 33 abuts against the second limiting member 9, the second limiting member 9 is provided with a second open slot 91, and the first connecting pipe 31 is arranged in the second open slot 91 and can be moved into or out of the second open slot 91 along the second direction. It can be understood that by arranging the second limiting member 9 in cooperation with the mounting plate 8, the two ends of the filter element 32 in the first direction abut against the mounting plate 8 and the second limiting member 9 respectively, so as to fix the filter element 32, and the filter element 32 can be moved into or out of the space formed by the mounting plate 8 and the second limiting member 9 along the second direction, so that when the filter layer needs to be replaced, the filter element 32 can be directly moved out of the space formed by the mounting plate 8 and the second limiting member 9 along the second direction, thereby saving labor.

[0064] Further, when the filter element 32 is moved out of the space formed by the mounting plate 8 and the second limiting piece 9 in the second direction, the operator can hold the first connecting pipe 31 and the second connecting pipe 33 to move the filter element 32 out of the space formed by the mounting plate 8 and the second limiting piece 9 in the second direction. When the filter element 32 is moved into the space formed by the mounting plate 8 and the second limiting piece 9 in the second direction, the operator can hold the first connecting pipe 31 and the second connecting pipe 33 to place the filter element 32 into the space formed by the mounting plate 8 and the second limiting piece 9 in the second direction, which facilitates the operator to take and place the filter element 32. Exemplarily, the mounting plate 8 is welded in the housing 1.

[0065] Further, as shown in Figure 1 and Figure 6 , a door body 12 is rotatably connected to one side of the housing 1, and a plurality of exhaust holes 13 are arranged on the side of the housing 1 opposite to the door body 12. It can be understood that, by arranging the rotatable door body 12, when the door body 12 is opened, the collection tank 5 and the second tank body 23 are convenient to take and place, and when the door body 12 is closed, interference of the structure arranged in the housing 1 by the outside can be avoided, the stability of the operation of the filter device is ensured, and the plurality of exhaust holes 13 are opposite to the door body 12, both sides of the housing are in communication with the outside when the door body 12 is opened, which is helpful for the gas circulation in the housing 1 and the gas volatilized by the filtering solution when the filtering solution is dispersed.

[0066] Exemplarily, the exhaust holes 13 can be arranged in a number of 10, 20, 30, etc. In the first direction, the plurality of exhaust holes 13 are arranged on the side of the side face away from the top end of the housing 1, the door body 12 is made of transparent glass to facilitate the operator to observe the inside of the housing 1, the door body 12 is movably connected to the opening end of the housing 1 through a hinge 14, a handle 15 is arranged at the end of the door body 12 away from the hinge 14 to facilitate the opening and closing of the door body 12, and a matching magnetic attraction structure is arranged on the abutting position of the door body 12 and the housing 1 to facilitate the stable fixation of the door body 12 to the housing 1. The handle 15 is adhesively connected to the door body 12.

[0067] Exemplarily, as shown in Figure 1 , in the present embodiment, a plurality of handles 15 are arranged on the outer side of the top of the housing 1, and the plurality of handles 15 all serve as force points for carrying the filter device, which is helpful for the operator to carry the filter device and has high safety. The number of the handles 15 can be 2, 3, 4, etc. In the present embodiment, 2 handles 15 are arranged on the outer side of the top of the housing 1, and the 2 handles 15 are oppositely arranged and are both welded to the outer side of the top of the housing 1.

[0068] Further, as shown in Figure 2As shown, the end cover 22 is also provided with a pressure relief valve 26 in sealing manner, and the pressure relief valve 26 is communicated with the first tank body 21. It can be understood that after the filtration of the solution is completed, the air pressure in the first tank body 21 is in a state higher than the standard atmospheric pressure, and if the end cover 22 is directly opened, an explosion or the like may occur, at this time, the first tank body 21 is first depressurized through the pressure relief valve 26, so that the air pressure in the first tank body 21 returns to a normal state, thereby avoiding the explosion in the first tank body 21 when the end cover 22 is opened, and the safety is improved.

[0069] Exemplarily, the pressure relief valve 26 is a manual pressure relief valve, the manual pressure relief valve is provided in sealing manner on the end cover 22, one end of the manual pressure relief valve is communicated with the first tank body 21, and the other end of the manual pressure relief valve extends to the outside of the first tank body 21, and the switch of the manual pressure relief valve is located outside the first tank body 21, when the first tank body 21 needs to be depressurized, the switch of the manual pressure relief valve is directly opened, so that the first tank body 21 is communicated with the first tank body 21, and when the solution to be filtered needs to be filtered, the switch of the manual pressure relief valve is directly closed, so that the first tank body 21 is in a sealed state. The structure of the manual pressure relief valve and the switch thereof are both prior art, and the present embodiment is not limited in detail.

[0070] Further, it can be further conceived that the gas source in the present embodiment is a nitrogen source, and the solution is a perovskite solution, that is, the gas driving the solution to move is nitrogen, and the density of nitrogen is smaller than that of air, after the pressure relief valve 26 is opened, part of the nitrogen will move to the top end of the shell 1, with the continuous discharge of the nitrogen, part of the original gas in the shell 1 will be discharged from the shell 1, and another part of the original gas will be gradually squeezed to the bottom of the shell 1, however, the plurality of exhaust holes 13 are provided on the side away from the top end of the shell 1, which can cooperate with the exhaust holes 13 to discharge another part of the original gas in the shell 1, since the gas volatilized from the perovskite liquid has harmful components, thereby avoiding the harmful gas volatilized from the perovskite liquid in the shell 1 from gathering at the bottom of the shell 1, avoiding the operator from inhaling a large amount of gas when taking and placing the tank body, and further avoiding causing safety hazards to the operator.

[0071] Taking the perovskite solution as an example, the working process of the filtering device provided in the present embodiment is as follows: the first tank body 21 containing the perovskite solution to be filtered is placed in the shell 1, the end cover 22 is connected to the open end of the first tank body 21, then the gas force conveying assembly 4 and the liquid supply assembly 2 are communicated through the gas inlet pipeline, and the connection pipeline is connected between the liquid supply assembly 2 and the filtering assembly 3, then the gas force conveying assembly 4 is opened to convey the gas into the first tank body 21, thereby driving the perovskite solution to be filtered in the first tank body 21 to move to the filtering assembly 3 for filtration, until the perovskite solution is filtered.

[0072] It should be noted that the above only the preferred embodiments of the present application and the use of technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, those skilled in the art can make various obvious changes, re-adjustment and replacement without departing from the scope of the present application. Therefore, although the above embodiments of the present application has been described in more detail, but the present application is not limited to the above examples, without departing from the concept of the present application, but also can include more other equivalent embodiments, and the scope of the present application is determined by the appended claims.

Claims

1. Filtration device, characterized in that The utility model relates to a filter device for filtering solution, comprising: a shell (1); a liquid supply assembly (2) comprising an end cover (22) and a first tank body (21) with an open end, the first tank body (21) being capable of placing the solution to be filtered, the end cover (22) being detachably sealed and capped on the open end of the first tank body (21), a liquid outlet pipeline (24) being sealed on the end cover (22), one end of the liquid outlet pipeline (24) being located in the first tank body (21) and extending to the bottom of the first tank body (21); a filter assembly (3) located in the shell (1), the filter assembly (3) being in communication with the other end of the liquid outlet pipeline (24) for filtering the solution to be filtered; a pneumatic conveying assembly (4) for conveying gas into the first tank body (21) to convey the solution to be filtered in the first tank body (21) to the filter assembly (3); a collection tank located in the shell (1) for collecting the solution filtered by the filter assembly (3).

2. The filter device of claim 1, wherein, The liquid supply assembly (2) further comprises a second tank body (23) with an open end, the second tank body (23) being located in the first tank body (21), the second tank body (23) being used for containing the solution to be filtered, one end of the liquid outlet pipeline (24) being located in the second tank body (23) and extending to the bottom of the second tank body (23).

3. The filter device of claim 2, wherein, The liquid outlet pipeline (24) comprises a liquid outlet pipe and a liquid outlet pipe joint (241) connected with each other, one end of the liquid outlet pipe joint (241) extending to the bottom of the second tank body (23) through the liquid outlet pipe, the other end of the liquid outlet pipe joint (241) being in communication with one end of the filter assembly (3).

4. The filter device of claim 1, wherein, A fixing seat (6) is arranged in the shell (1), the fixing seat (6) being located at the bottom of the shell (1), first and second limiting grooves (61, 62) being arranged at intervals on the fixing seat (6), one end of the first tank body (21) away from the open end thereof being matched with the first limiting groove (61), and one end of the collection tank (5) away from the open end thereof being matched with the second limiting groove (62).

5. The filter device of claim 4, wherein, A first limiting member (7) is further fixed at the bottom of the shell (1), the fixing seat (6) being a rectangular member, two adjacent sides of the fixing seat (6) being in abutment with the inner side of the shell (1), and the other two adjacent sides of the fixing seat (6) being in abutment with the first limiting member (7).

6. The filter device of claim 1, wherein, An installation plate (8) is further arranged in the shell (1), the filter assembly (3) being installed on the installation plate (8). And / or, the filter assembly (3) comprises a first connecting pipe (31), a filter (32) and a second connecting pipe (33) connected detachably, in the first direction, the first connecting pipe (31) and the second connecting pipe (33) are located at two ends of the filter (32) respectively, one end of the first connecting pipe (31) away from the filter (32) is communicated with the other end of the liquid outlet pipeline (24), one end of the second connecting pipe (33) away from the filter (32) is used for discharging the filtered solution.

7. The filter device of claim 6, wherein, The mounting plate (8) is provided with a first opening slot (81), the second connecting pipe (33) is arranged in the first opening slot (81) and can be moved into or out of the first opening slot (81) along the second direction, one end of the filter (32) away from the first connecting pipe (31) abuts against the mounting plate (8).

8. The filter device of claim 7, wherein, The filter device further comprises a second limiting piece (9) connected with the mounting plate (8), one end of the filter (32) away from the second connecting pipe (33) abuts against the second limiting piece (9), the second limiting piece (9) is provided with a second opening slot (91), the first connecting pipe (31) is arranged in the second opening slot (91) and can be moved into or out of the second opening slot (91) along the second direction.

9. The filter device according to any one of claims 1-8, characterized in that One side of the shell (1) is rotationally connected with a door body (12), the side of the shell (1) opposite to the door body (12) is provided with a plurality of exhaust holes (13).

10. The filter device according to any one of claims 1-8, characterized in that The end cover (22) is further provided with a pressure relief valve (26) in sealing manner, the pressure relief valve (26) is communicated with the first tank body (21).

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