Bag type filtering device for photovoltaic cell silver paste printing

Abstract

The utility model relates to the technical field of photovoltaic cells, and discloses a bag type filter device for photovoltaic cell silver paste printing, which comprises a filter cartridge, a reinforcing plate, a supporting mesh basket, a filter bag, a pressing device and a fixing device, the reinforcing plate is fixedly arranged in the filter cartridge, the supporting mesh basket is fixedly arranged in the reinforcing plate, and the filter bag is fixedly arranged in the filter cartridge. The filter bag is arranged inside the supporting net basket, the pressing device is arranged inside the filter cartridge, the fixing device is arranged at the top of the filter cartridge, the pressing device is composed of a sliding rod, a sliding block, a first spring, an annular plate and a fixing rod, and the sliding rod is fixedly installed inside the filter cartridge. According to the bag type filtering device for photovoltaic cell silver paste printing, a sliding block is reset by inwards pressing a moving rod and a first spring, an annular plate can drive a fixing rod to move upwards, a cover body can be jacked up, after the cover body is taken down, a filtering bag is taken down from a protrusion, then the filtering bag is replaced, and use is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cells, in particular to a bag filter device for silver paste printing of photovoltaic cells. Background Art

[0002] Silver paste printing filtration equipment plays a crucial role in photovoltaic cell manufacturing. This equipment utilizes pressure filtration to ensure the purity of the silver paste, thereby improving the quality and performance of photovoltaic cells. The equipment primarily consists of three components: a filter container, a filter bag, and a support basket. These three components work together to effectively filter the silver paste.

[0003] During the filtration process, the silver slurry is pressurized by a pump and flows through the filter inlet into the filter bags. The filter bags are made of high-strength, corrosion-resistant materials and housed within reinforced mesh baskets, ensuring stability under high pressure. Once the liquid permeates the filter bags of the required fineness grade, qualified filtrate is obtained. Impurity particles are effectively intercepted by the filter bags, preventing them from contaminating the silver slurry.

[0004] As filtration time progresses, solid impurities accumulate on the filter bags, and the filter cake thickness increases, leading to increased filtration resistance and consequently, increased pressure within the tank. When the pressure reaches a certain level, the filter bags need to be cleaned or replaced to ensure filtration efficiency and the normal operation of the equipment. However, existing devices are inconvenient for cleaning or replacing the filter bags. Therefore, a device that facilitates quick filter bag replacement is proposed to simplify the operation process and improve production efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a bag filter device for printing silver paste of photovoltaic cells, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a bag filter device for printing silver paste of photovoltaic cells, comprising a filter cartridge, a reinforcing plate, a supporting mesh basket, a filter bag, a pressing device, and a fixing device, wherein the reinforcing plate is fixedly installed inside the filter cartridge, the supporting mesh basket is fixedly installed inside the reinforcing plate, the filter bag is arranged inside the supporting mesh basket, the pressing device is arranged inside the filter cartridge, and the fixing device is arranged at the top of the filter cartridge.

[0007] The pressing device consists of a sliding rod, a slider, a first spring, an annular plate, and a fixed rod. The sliding rod is fixedly installed inside the filter cartridge, the slider is slidably installed on the surface of the sliding rod, the first spring is sleeved on the surface of the sliding rod, the annular plate is fixedly installed on the side of the slider, and the fixed rod is arranged on the top of the annular plate.

[0008] The fixing device consists of a cover body, a moving rod, a cylinder, a second spring, and a first ball. The cover body is arranged on the top of the filter cartridge, the moving rod is slidably installed inside the filter cartridge, the cylinder is fixedly installed on the side of the moving rod, the second spring is arranged inside the filter cartridge, and the first ball is movably installed inside the moving rod.

[0009] Preferably, one end of the first spring is fixedly connected to the filter cartridge, and the other end of the first spring is fixedly connected to the slider, and the first spring is provided for resetting the slider.

[0010] Preferably, the sliding rod, the sliding block and the first spring are arranged in a group and are distributed in a circular array inside the filter cartridge. This arrangement can better reset the sliding block.

[0011] Preferably, a protrusion is provided on the top of the reinforcing plate, and a notch corresponding to the protrusion is opened through the surface of the annular plate, which facilitates the fixing of the filter bag.

[0012] Preferably, a second ball is movably mounted on the bottom of the fixing rod, and the top of the fixing rod is fixedly connected to the cover body. This arrangement allows the fixing rod to move on the top of the annular plate.

[0013] Preferably, one end of the second spring abuts against the filter cartridge, and the other end of the second spring is fixedly connected to the cylinder, and the second spring is provided for resetting the moving rod.

[0014] Preferably, the movable rod, cylinder, second spring and first ball are all grouped together and symmetrically arranged inside the filter cartridge. A limiting groove matching the movable rod is provided on the side of the cover body. The movable rod can connect the cover body and the filter cartridge together.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] (1) The bag filter device for printing silver paste of photovoltaic cells can be used to press the moving rod inward, and the first spring resets the slider, so that the annular plate drives the fixed rod to move upward, and the cover body can be lifted up. After removing the cover body, the filter bag can be removed from the protrusion and then replaced. It is convenient to use.

[0017] (2) The bag filter device for printing silver paste of photovoltaic cells is easy to operate by placing a cover on the top of the filter cartridge and rotating the cover. Under the action of the second spring, the movable rod enters the limit groove, so that the cover and the filter cartridge are connected together. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 This is a schematic diagram of the structure of the annular plate and the fixing rod of the utility model;

[0022] Figure 5 This is a schematic diagram of the sliding rod, the sliding block and the first spring structure of the utility model.

[0023] In the figure: 1. filter cartridge; 2. reinforcement plate; 3. support basket; 4. filter bag; 5. pressing device; 501. slide rod; 502. slider; 503. first spring; 504. annular plate; 505. fixing rod; 6. fixing device; 601. cover; 602. moving rod; 603. cylinder; 604. second spring; 605. first ball. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] See also Figure 1-5 The utility model provides a technical solution: a bag filter device for photovoltaic cell silver paste printing, comprising a filter cartridge 1, a reinforcing plate 2, a supporting mesh basket 3, a filter bag 4, a pressing device 5, and a fixing device 6. The reinforcing plate 2 is fixedly installed inside the filter cartridge 1, the supporting mesh basket 3 is fixedly installed inside the reinforcing plate 2, the filter bag 4 is arranged inside the supporting mesh basket 3, the pressing device 5 is arranged inside the filter cartridge 1, and the fixing device 6 is arranged on the top of the filter cartridge 1.

[0026] The downward pressing device 5 is composed of a slide rod 501, a slide block 502, a first spring 503, an annular plate 504 and a fixing rod 505. The slide rod 501 is fixedly installed in the inside of the filter cylinder 1. The slide block 502 is slidingly installed on the surface of the slide rod 501. The first spring 503 is sleeved on the surface of the slide rod 501. One end of the first spring 503 is fixedly connected with the filter cylinder 1, and the other end of the first spring 503 is fixedly connected with the slide block 502. The first spring 503 is arranged to reset the slide block 502. The slide rod 501, the slide block 502 and the first spring 503 are all arranged in a group and are circumferentially arranged in the inside of the filter cylinder 1. This arrangement can better reset the slide block 502. The annular plate 504 is fixedly installed on the side surface of the slide block 502. The top of the reinforcing plate 2 is provided with a protrusion. A slot corresponding to the protrusion is formed in the surface of the annular plate 504. This arrangement facilitates the fixation of the filter bag 4. The fixing rod 505 is arranged on the top of the annular plate 504.

[0027] The fixing device 6 is composed of a cover body 601, a moving rod 602, a cylinder 603, a second spring 604 and a first ball 605. The cover body 601 is arranged on the top of the filter cylinder 1. The bottom of the fixing rod 505 movably has a second ball. The top of the fixing rod 505 is fixedly connected with the cover body 601. This arrangement can make the fixing rod 505 move on the top of the annular plate 504. The moving rod 602 is slidingly installed in the inside of the filter cylinder 1. The cylinder 603 is fixedly installed on the side surface of the moving rod 602. The second spring 604 is arranged in the inside of the filter cylinder 1. One end of the second spring 604 is in abutment with the filter cylinder 1. The other end of the second spring 604 is fixedly connected with the cylinder 603. The second spring 604 is arranged to reset the moving rod 602. The first ball 605 is movably installed in the inside of the moving rod 602. The moving rod 602, the cylinder 603, the second spring 604 and the first ball 605 are all arranged in a group and are symmetrically arranged in the inside of the filter cylinder 1. The side surface of the cover body 601 is provided with a limiting slot matched with the moving rod 602. The moving rod 602 is arranged to connect the cover body 601 and the filter cylinder 1 together.

[0028] In use, the moving rod 602 is pressed inwardly. The first spring 503 resets the slide block 502. This can make the annular plate 504 drive the fixing rod 505 to move upwardly. This can lift up the cover body 601. After the cover body 601 is removed, the filter bag 4 is removed from the protrusion. Then, the filter bag 4 is replaced. The cover body 601 is arranged on the top of the filter cylinder 1. The cover body 601 is rotated. Under the action of the second spring 604, the moving rod 602 can enter the limiting slot. This can connect the cover body 601 and the filter cylinder 1 together.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A bag filter device for photovoltaic cell silver paste printing, comprising a filter cartridge (1), a reinforcing plate (2), a supporting basket (3), a filter bag (4), a pressing device (5), and a fixing device (6), characterized in that: The reinforcing plate (2) is fixedly mounted inside the filter cartridge (1), the supporting mesh basket (3) is fixedly mounted inside the reinforcing plate (2), the filter bag (4) is arranged inside the supporting mesh basket (3), the pressing device (5) is arranged inside the filter cartridge (1), and the fixing device (6) is arranged on the top of the filter cartridge (1); The pressing device (5) is composed of a sliding rod (501), a slider (502), a first spring (503), an annular plate (504), and a fixing rod (505); the sliding rod (501) is fixedly installed inside the filter cartridge (1); the slider (502) is slidably installed on the surface of the sliding rod (501); the first spring (503) is sleeved on the surface of the sliding rod (501); the annular plate (504) is fixedly installed on the side of the slider (502); and the fixing rod (505) is arranged on the top of the annular plate (504); The fixing device (6) is composed of a cover body (601), a movable rod (602), a cylinder (603), a second spring (604), and a first ball (605); the cover body (601) is arranged on the top of the filter cartridge (1); the movable rod (602) is slidably installed inside the filter cartridge (1); the cylinder (603) is fixedly installed on the side of the movable rod (602); the second spring (604) is arranged inside the filter cartridge (1); and the first ball (605) is movably installed inside the movable rod (602).

2. The bag filter device for photovoltaic cell silver paste printing according to claim 1, characterized in that: One end of the first spring (503) is fixedly connected to the filter cartridge (1), and the other end of the first spring (503) is fixedly connected to the slider (502).

3. The bag filter device for photovoltaic cell silver paste printing according to claim 1, characterized in that: The sliding rod (501), the sliding block (502) and the first spring (503) are grouped together and distributed in a circular array inside the filter cartridge (1).

4. The bag filter device for photovoltaic cell silver paste printing according to claim 1, characterized in that: A protrusion is provided on the top of the reinforcing plate (2), and a notch corresponding to the protrusion is provided through the surface of the annular plate (504).

5. The bag filter device for photovoltaic cell silver paste printing according to claim 1, characterized in that: A second ball bearing is movably mounted on the bottom of the fixing rod (505), and the top of the fixing rod (505) is fixedly connected to the cover body (601).

6. The bag filter device for photovoltaic cell silver paste printing according to claim 1, characterized in that: One end of the second spring (604) is in contact with the filter cartridge (1), and the other end of the second spring (604) is fixedly connected to the cylinder (603).

7. The bag filter device for photovoltaic cell silver paste printing according to claim 1, characterized in that: The movable rod (602), the cylinder (603), the second spring (604), and the first ball (605) are all arranged in a group and are symmetrically arranged inside the filter cartridge (1). A limiting groove matching the movable rod (602) is provided on the side of the cover body (601).

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