Filtering device for a laminator

Abstract

This utility model provides a filtration device for a laminator, relating to the field of laminator filtration technology. It aims to solve the problems of poor filtration efficiency in existing vacuum pumps that use conventional paper filter elements to filter the gas generated during vacuuming. This allows impurities such as welding slag and iron filings to penetrate the filter element and enter the vacuum pump cavity, affecting normal operation. Furthermore, the accumulation of impurities and dust necessitates frequent inspection, maintenance, and upkeep of the vacuum pump and filter, increasing maintenance costs. The proposed device includes a vacuum pump system with a laminator vacuum valve installed on its left side. A filter tank system is installed between the vacuum pump system and the laminator vacuum valve. The tank serves as a pre-vacuum tank to pre-vacuum the cavity. A bypass design is used; after pre-vacuuming, the filter tank's function is disabled, and the pump directly evacuates the cavity, reducing pump load, effectively improving equipment evacuation efficiency, reducing vacuum pump filter consumption, and minimizing pump maintenance.

Description

Technical Field

[0001] This utility model relates to the field of laminator filtration technology, and in particular to a filtration device for a laminator. Background Technology

[0002] Laminators are crucial equipment in solar cell module production. With the rapid development of the photovoltaic industry, high efficiency and energy saving have become new goals. Improving equipment production efficiency, shortening production process time, and reducing equipment failure rate are key aspects of laminator operation. During solar cell module lamination, a vacuum pump is needed to evacuate the lamination chamber, removing air from the modules and eliminating air bubbles. As the laminator area increases, the evacuation time also increases, significantly increasing the production cycle time and reducing efficiency. Currently, laminators have reached a size of 11.5m, accommodating up to nine modules. Larger chambers and more modules require faster evacuation speeds, so maintenance-free screw dry pumps are typically chosen as the evacuation pump, achieving a evacuation SUV of 630-650 m³ / h. However, the screw-type dry pump has a smaller clearance and higher rotation speed, making it less compatible with some particles in the evacuated air, such as welding slag, compared to oil pumps.

[0003] Existing vacuum pumps use conventional paper filter elements to filter the gas generated during vacuuming. However, the filtration effect is poor, and welding slag, iron filings, and other impurities can penetrate the filter element and enter the vacuum pump cavity, affecting the normal operation of the vacuum pump. Due to the accumulation of impurities and dust, the vacuum pump and filter need to be inspected, maintained, and serviced frequently, increasing maintenance costs. Therefore, it is particularly important to design a filtration device for a laminator to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor filtration effect of existing vacuum pumps using conventional paper filter elements to filter the gas generated during vacuuming, allowing welding slag, iron sand, etc. to penetrate the filter element and enter the vacuum pump cavity, affecting the normal operation of the vacuum pump. Due to the accumulation of impurities and dust, the vacuum pump and filter need to be frequently inspected, maintained, and serviced, increasing maintenance costs. Therefore, a filtration device for a laminator is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a filtration device for a laminator, comprising a vacuum pump system, a laminator vacuum valve installed on the left side of the vacuum pump system, a filter tank system installed between the vacuum pump system and the laminator vacuum valve, the filter tank system comprising a tank body, a bypass valve A installed at the left end of the tank body, a filter valve A installed below the bypass valve A, and the bypass valve A and the filter valve A connected to the laminator vacuum valve through a filter inlet pipe.

[0006] Preferably, a bypass valve B is installed at the right end of the tank, and a filter valve B is installed below the bypass valve B. The bypass valve B and the filter valve B are connected to the vacuum valve of the laminator through a suction pipe. A bypass pipe is provided in the tank, and the bypass pipe connects the bypass valve A and the bypass valve B.

[0007] Preferably, the tank body is provided with partitions, which are made of a breathable material.

[0008] Preferably, a cooling system is installed on the outer wall of the tank according to the actual working conditions, and the cooling system includes two sets of cooling water pipes.

[0009] Preferably, both sets of cooling water pipes are provided with an inlet and an outlet.

[0010] Preferably, the tank body adopts a pre-vacuum design, which can effectively reduce the pump load.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, during use, a multi-stage sedimentation and filtration structure is installed in the tank to initially screen larger particles. Simultaneously, a cleaning and maintenance port is provided on the tank for easy removal of sediment. The filter tank volume is designed to be 4-6 times the cavity volume, depending on the equipment's spatial structure. Compared to the gas filtration device inside a conventional filter press, this utility model uses the tank as a pre-vacuum tank to pre-vacuum the cavity. A bypass design is used; after pre-vacuuming, the filter tank's function is disabled, and the pump directly evacuates the cavity, reducing the pump load, effectively improving the equipment's evacuation efficiency, reducing vacuum pump filter consumption, and minimizing pump usage. For maintenance, a liquid cooling system can be selected to cool the gas. This system can cool EVA vapor, causing it to condense and reducing the EVA content in the gas. It can also cool the gas, reducing the cooling pressure in the pump chamber. The overall structure is compact, with a reasonable spatial layout, making it easy to install and maintain. It solves the problems of existing vacuum pumps that use conventional paper filter elements to filter the gas generated during vacuuming. The filtration effect is poor, and welding slag, iron sand, etc. can penetrate the filter element and enter the vacuum pump chamber, affecting the normal operation of the vacuum pump. Due to the accumulation of impurities and dust, the vacuum pump and filter need to be frequently inspected, maintained, and serviced, increasing maintenance costs.

[0013] 2. In this utility model, a vacuum filtration and condensation device is integrated at the front end of the vacuum storage tank area, and a cooling system is added to the filtration system. During vacuuming, the cooling system cools the high-temperature vacuum vapor through circulating cooling water and filters the vapor simultaneously. This greatly improves the effectiveness of the vacuum filtration system, reduces damage to the vacuum pump from EVA vapor, shortens the maintenance and upkeep cycle of the vacuum pump, and the detachable design facilitates regular cleaning. Attached Figure Description

[0014] Figure 1 This is an overall view of the filtration device of the laminator of this utility model;

[0015] Figure 2 This is a schematic diagram of a partial internal structure of the tank in the filtration device of the laminator of this utility model;

[0016] Figure 3 This is a schematic diagram of the cooling system installed in the tank of the laminator of this utility model.

[0017] Legend: 1. Vacuum pump system; 2. Laminator vacuum valve; 3. Filtration system; 301. Tank body; 4. Bypass valve A; 401. Filter valve A; 402. Filter inlet pipe; 5. Bypass valve B; 501. Filter valve B; 502. Pull pipe; 6. Baffle; 601. Bypass pipeline; 7. Cooling water pipe. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] This utility model provides a filtration device for a laminator, including a vacuum pump system 1. A laminator vacuum valve 2 is installed on the left side of the vacuum pump system 1. A filter tank system is installed between the vacuum pump system and the laminator vacuum valve 2. The filter tank system includes a tank body 301. A bypass valve A4 is installed at the left end of the tank body 301. A filter valve A401 is installed below the bypass valve A4. The bypass valve A4 and the filter valve A401 are connected to the laminator through a filter inlet pipe 402. Vacuum valve 2 is connected. A bypass valve B is installed at the right end of the tank 301. A filter valve B is installed below the bypass valve B. The bypass valve B and the filter valve B are connected to the laminator vacuum valve 2 through a suction pipe. A bypass pipe runs through the tank 301, connecting bypass valve A4 and bypass valve B. Baffles are evenly distributed in the tank 301. The baffles are made of breathable material. The tank 301 adopts a pre-vacuum design to effectively reduce the pump load.

[0021] In actual use, the filter device of the laminator should be selected according to the specific specifications of the laminator, with an appropriate filter volume, and installed between the vacuum pump and the laminator. A control signal should also be connected. If a filter with a cooling function is selected, cooling water needs to be connected. Cooling water is replenished through an external cooling water supply device in conjunction with two sets of cooling water pipes to achieve a cooling effect. The filter's inlet pipe is connected to the laminator, and its outlet pipe is connected to the vacuum pump. During the laminator feeding process, filter valve A401 and bypass valve A4 are closed, while filter valve B and bypass valve B are open. The vacuum pump evacuates the filter, bypass pipeline, and extraction pipe structure. When the pressure detection reaches the set value or the evacuation time is reached, bypass valve B is closed. At this time, the lamination chamber is ready for evacuation, the vacuum valve opens, and filter valve A is opened. According to the principle of communicating vessels, the air in the lamination chamber will instantly transfer to the filter. The large air flow carries dust particles in the pipeline into the filter, where they are blocked by the layers of baffles inside the filter and remain in the filter. When the set time or pressure detection reaches the set value, filter valve A401 and filter valve B are closed, while bypass valve A4 and bypass valve B are opened. The vacuum pump directly evacuates the lamination chamber, reducing the pump load. Until the lamination process is completed, the laminator is opened and materials are transferred. At this time, the vacuum pump re-evacuates the filter to prepare for the next lamination process. This process is repeated to filter the gas inside the laminator. A multi-stage sedimentation filter structure is installed in tank 301 to initially screen larger particles. At the same time, a cleaning and maintenance port is provided on tank 301 for easy removal of deposits. The filter tank volume is designed to be 4-6 times the volume of the cavity, depending on the space structure of the equipment. Compared with conventional filtration devices for the gas inside the laminator, this utility model uses tank 301 as a pre-vacuum tank to pre-vacuum the cavity. The bypass design disables the function of the filter tank after pre-vacuuming, and the pump directly evacuates the cavity, reducing the pump load, effectively improving the equipment evacuation efficiency, reducing the consumption of the vacuum pump filter, and reducing pump maintenance. A liquid cooling system can be selected to cool the gas. First, it can cool EVA vapor, causing it to condense and reducing the EVA content in the gas. Second, it can cool the gas, reducing the cooling pressure in the pump cavity. The overall structure is compact, the space layout is reasonable, and it is easy to install and maintain.

[0022] Example 1

[0023] like Figure 1-3 As shown, a cooling system is installed on the outer wall of the tank 301 according to actual working conditions. The cooling system includes two sets of cooling water pipes, each set of which is equipped with an inlet and an outlet.

[0024] The overall effect of Embodiment 1 is that, during use, a vacuum filtration and condensation device is integrated at the front end of the vacuum storage tank area, and a cooling system is added to the filtration system 3. During vacuuming, the cooling system cools the high-temperature vacuum vapor through circulating cooling water and simultaneously filters the vapor. This greatly improves the effectiveness of the vacuum filtration system 3, reduces damage to the vacuum pump from EVA vapor, shortens the maintenance and upkeep cycle of the vacuum pump, and features a detachable design for easy periodic cleaning.

[0025] Working Principle: The exhaust pipe is connected to a vacuum pump. During the laminator feeding process, filter valve A and bypass valve A are closed, while filter valve B and bypass valve B are opened. The vacuum pump evacuates the filter, bypass pipe, and suction pipe structure. When the pressure reaches the set value or the evacuation time is reached, bypass valve B is closed. At this time, the lamination chamber is ready for evacuation, the vacuum valve opens, and filter valve A opens. According to the principle of communicating vessels, the air in the lamination chamber is instantly transferred to the filter. The large air flow carries dust particles from the pipe into the filter, where they are trapped by the internal baffles. When the set time or pressure reaches the set value, filter valve A and filter valve B close, while bypass valve A and bypass valve B open. The vacuum pump directly evacuates the lamination chamber, reducing the pump load. This process continues until the lamination process is complete, the laminator is opened, and materials are transferred. At this point, the vacuum pump evacuates the filter again to prepare for the next lamination process. This cycle repeats to complete the filtration of the gas inside the laminator.

Claims

1. A filtration device for a laminator, comprising a vacuum pump system (1), wherein a laminator vacuum valve (2) is installed on the left side of the vacuum pump system (1), characterized in that, A filter tank system is installed between the vacuum pump system and the laminator vacuum valve (2). The filter tank system includes a tank body (301). A bypass valve A (4) is installed at the left end of the tank body (301). A filter valve A (401) is installed below the bypass valve A (4). The bypass valve A (4) and the filter valve A (401) are connected to the laminator vacuum valve (2) through a filter inlet pipe (402).

2. The filtration device for the laminator according to claim 1, characterized in that, A bypass valve B is installed at the right end of the tank (301), and a filter valve B is installed below the bypass valve B. The bypass valve B and the filter valve B are connected to the vacuum valve (2) of the laminator through a suction pipe. A bypass pipe is provided in the tank (301), and the bypass pipe connects the bypass valve A (4) and the bypass valve B.

3. The filtration device for the laminator according to claim 1, characterized in that, The tank (301) is equipped with partitions that are evenly distributed in the tank body and are made of a breathable material.

4. The filtration device for the laminator according to claim 1, characterized in that, A cooling system is installed on the outer wall of the tank (301) according to the actual working conditions. The cooling system includes two sets of cooling water pipes.

5. The filtration device for the laminator according to claim 4, characterized in that, Both sets of cooling water pipes are equipped with inlets and outlets.

6. The filtration device for the laminator according to claim 1, characterized in that, The tank (301) adopts a pre-vacuum design, which can effectively reduce the pump load.

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