Vacuum suction type slurry filter

Abstract

The utility model discloses a vacuum suction type slurry filter which comprises an operation chamber for accommodating a slurry container, and the operation chamber is provided with a door capable of being opened and closed; the operation chamber is connected with a vacuum pump; a slurry inlet is formed in the top of the operation cavity, and a filter screen is arranged at the slurry inlet. When slurry filtering operation is carried out, to-be-filtered slurry is poured into the feeding hopper, so that the slurry is accumulated on the filter screen, and the to-be-filtered slurry seals the feeding hopper due to the viscosity and compactness of the slurry, namely, the operation chamber is sealed. The vacuum pump executes suction operation, air in the operation cavity can be sucked away, vacuum is generated in the operation cavity to form negative pressure, the slurry is sucked into the operation cavity under the action of the negative pressure, and the slurry can enter the slurry container below the filter screen through the high-density filter screen.

Description

Technical Field

[0001] The utility model relates to the technical field of material filtration, and particularly to a vacuum suction type slurry filter. Background Art

[0002] In the photovoltaic industry, the quality of slurries such as silver paste directly affects the photoelectric conversion efficiency and reliability of solar panels. Therefore, removing impurities in the silver paste is crucial. On the one hand, impurities may affect the electrical conductivity of the silver paste, thereby reducing the efficiency of the battery chips; on the other hand, impurities may also cause defects in the printing process, such as short circuits or broken grid phenomena, thus affecting the yield. However, due to the high viscosity of the silver paste and the very small impurity particles therein, this poses challenges to filtration. The high viscosity increases the resistance of the fluid passing through the filter medium, while the tiny impurities require finer filter mesh holes to capture, both of which will significantly reduce the filtration rate. In addition, too fine filtration may further reduce the flow rate due to blockage, making it difficult to achieve a balance between the ideal filtration efficiency and production capacity in actual operation.

[0003] In the prior art, the patent CN220899644U discloses a silver paste filtering and canning device, which presses the slurry into a container by pressurization while filtering. In this way, the operation is relatively troublesome, and the filtering operation cannot be carried out continuously, resulting in low efficiency. Summary of the Utility Model

[0004] Object of the Invention: In order to overcome the deficiencies in the prior art, the utility model provides a vacuum suction type slurry filter that can improve the filtration efficiency of slurries with relatively high viscosity.

[0005] Technical Solution: To achieve the above object, the vacuum suction type slurry filter of the utility model includes an operation chamber for accommodating a slurry container, and the operation chamber has an openable and closable door to facilitate putting in and taking out the slurry container from the operation chamber; the operation chamber is connected to a vacuum pump; the top of the operation chamber has a slurry inlet, and a filter screen is arranged at the slurry inlet.

[0006] Further, a feed hopper is installed at the slurry inlet, and the filter screen is fixed at the lower end of the feed hopper.

[0007] When carrying out the slurry filtration operation, pour the slurry to be filtered into the feed hopper, so that the slurry accumulates on the filter screen. Due to the viscosity and density of the slurry, the slurry to be filtered closes the feed hopper, that is, closes the operation chamber. The vacuum pump performs the suction operation, which can suck out the air in the operation chamber, creating a vacuum and negative pressure in the operation chamber. The negative pressure acts to suck the slurry into the operation chamber, enabling the slurry to pass through the high-density filter screen and enter the slurry container below the filter screen.

[0008] Further, an installation plate is fixed to the upper end of the feed hopper, and the installation plate can be detached relative to the top plate of the working chamber.

[0009] Further, a receiving groove for receiving the installation plate is provided on the top plate of the working chamber. A retaining edge for supporting the installation plate is provided on the lower side of the receiving groove, and a receiving groove for receiving a sealing ring is provided at the upper end of the retaining edge. The installation plate and the top plate are connected by a fixing mechanism.

[0010] Further, the fixing mechanism includes a first rotary tightening handle rotatably installed on the installation plate and a first tightening block fixedly installed on the top plate.

[0011] Further, the door is rotatably installed on the working chamber through a hinge, and a second tightening handle is installed on the door, and a second tightening block is fixed on the working chamber.

[0012] Further, a jig for positioning the slurry container is installed in the working chamber.

[0013] Further, the slurry filter further includes a machine base; the working chamber and the vacuum pump are arranged vertically on the machine base.

[0014] Beneficial effects: The vacuum suction type slurry filter of the present utility model has the following beneficial effects:

[0015] (1) In the solution of the present utility model, the characteristics of the slurry being viscous and dense are fully utilized, and the slurry is sucked into the working chamber by the principle of negative pressure suction to assist the slurry to pass through the dense filter net, which can effectively improve the filtration efficiency and can realize continuous and uninterrupted filtration operation.

[0016] (2) The feed hopper can be conveniently detached relative to the top plate, which is convenient for cleaning the feed hopper and the filter net, and also convenient for replacing the filter net to meet different filtration requirements.

[0017] (3) The overall structure is reasonably arranged. The whole slurry filter has a slender and tall structure, is small and compact, occupies less floor area, and since the working chamber is located on the upper side, it is convenient for operation. Description of the Drawings

[0018] Figure 1 is a structural diagram of the vacuum suction type slurry filter;

[0019] Figure 2 is a first state structural diagram of the working chamber part;

[0020] Figure 3 is a second state structural diagram of the working chamber part.

[0021] In the figure: 1 - slurry container; 2 - working chamber; 21 - door; 22 - top plate; 23 - hinge; 2a - accommodating groove; 2b - receiving groove; 3 - vacuum pump; 4 - filter screen; 5 - feeding hopper; 6 - mounting plate; 71 - first rotary tightening handle; 72 - first tightening block; 81 - second tightening handle; 82 - second tightening block; 9 - machine base; 10 - fixture. Detailed implementation manners

[0022] The present utility model will be further described in conjunction with the accompanying drawings.

[0023] As Figure 1 In the described vacuum suction type slurry filter, it includes a working chamber 2 for accommodating the slurry container 1. The working chamber 2 has an openable and closable door 21 to facilitate putting the slurry container 1 into and taking out from the working chamber 2; the working chamber 2 is connected to a vacuum pump 3; the top of the working chamber 2 has a slurry inlet, and a filter screen 4 is arranged at the slurry inlet.

[0024] The slurry filter further includes a machine base 9; the working chamber 2 and the vacuum pump 3 are arranged vertically on the machine base 9. With this overall structural layout, the whole slurry filter has a slender and tall structure, is small and compact in structure, occupies less floor area, and since the working chamber 2 is located on the upper side, it is convenient for operation.

[0025] Preferably, as Figure 2 shown, a feeding hopper 5 is installed at the slurry inlet, and the filter screen 4 is fixed at the lower end of the feeding hopper 5. When performing the slurry filtering operation, the slurry to be filtered is poured into the feeding hopper 5, so that the slurry accumulates on the filter screen 4. Due to the viscosity and density of the slurry, the slurry to be filtered closes the feeding hopper 5, that is, closes the working chamber 2. The vacuum pump 3 performs the suction operation, which can suck out the air in the working chamber 2, generate a vacuum and form a negative pressure in the working chamber 2. The negative pressure acts to suck the slurry into the working chamber 2, so that the slurry can enter the slurry container 1 below the filter screen 4 through the high-density filter screen 4.

[0026] In the solution of the present utility model, the characteristics of the viscosity and density of the slurry are fully utilized, and the principle of negative pressure suction is used to suck the slurry into the working chamber 2 to assist the slurry to pass through the dense filter screen, which can effectively improve the filtering efficiency and can realize continuous and uninterrupted filtering operations.

[0027] Preferably, as Figure 3As shown, a mounting plate 6 is fixed to the upper end of the feed hopper 5, and the mounting plate 6 can be detached relative to the top plate 22 of the working chamber 2. Specifically, the top plate 22 of the working chamber 2 has a receiving groove 2a for receiving the mounting plate 6. There is a retaining edge below the receiving groove 2a for supporting the mounting plate 6, and a receiving groove 2b for receiving a sealing ring is provided at the upper end of the retaining edge; the mounting plate 6 and the top plate 22 are connected by a fixing mechanism. The fixing mechanism includes a first rotary tightening handle 71 rotatably mounted on the mounting plate 6 and a first tightening block 72 fixedly mounted on the top plate 22.

[0028] With the above structure, the feed hopper 5 can be conveniently detached relative to the top plate 22, which is convenient for cleaning the feed hopper 5 and the filter screen 4, and also convenient for replacing the filter screen 4 to meet different filtering requirements.

[0029] The door 21 is rotatably mounted on the working chamber 2 through a hinge 23, and a second tightening handle 81 is mounted on the door 21, and a second tightening block 82 is fixed on the working chamber 2. A jig 10 for positioning the slurry container 1 is installed in the working chamber 2.

[0030] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A vacuum suction type slurry filter, characterized in that, It includes an operation chamber (2) for accommodating a slurry container (1), and the operation chamber (2) has a door (21) that can be opened and closed; the operation chamber (2) is connected to a vacuum pump (3); the top of the operation chamber (2) has a slurry inlet, and a filter screen (4) is provided at the slurry inlet; A feeding hopper (5) is installed at the slurry inlet, and the filter screen (4) is fixed at the lower end of the feeding hopper (5); The upper end of the feeding hopper (5) is fixed with a mounting plate (6), and the mounting plate (6) can be disassembled relative to the top plate (22) of the operation chamber (2).

2. The vacuum suction type slurry filter press according to claim 1, characterized in that, The top plate (22) of the operation chamber (2) has a receiving groove (2a) for receiving the mounting plate (6), the lower side of the receiving groove (2a) has a retaining edge for supporting the mounting plate (6), and the upper end of the retaining edge has a receiving groove (2b) for receiving a sealing ring; the mounting plate (6) and the top plate (22) are connected by a fixing mechanism.

3. The vacuum suction type slurry filter press according to claim 2, characterized in that, The fixing mechanism includes a first rotary tightening handle (71) rotatably installed on the mounting plate (6) and a first tightening block (72) fixedly installed on the top plate (22).

4. The vacuum suction type slurry filter press according to claim 1, characterized in that, The door (21) is rotatably installed on the operation chamber (2) through a hinge (23), and a second tightening handle (81) is installed on the door (21), and a second tightening block (82) is fixed on the operation chamber (2).

5. The vacuum suction type slurry filter press according to any one of claims 1-4, characterized in that, A jig (10) for positioning the slurry container (1) is installed in the operation chamber (2).

6. The vacuum suction type slurry filter according to any one of claims 1-4, characterized in that, The slurry filter also includes a machine base (9); the operation chamber (2) and the vacuum pump (3) are arranged vertically on the machine base (9).

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