A negative pressure filtration system

Abstract

The application discloses a negative pressure filtration system, which comprises a dirty liquid cavity, a negative pressure cavity and a clean liquid cavity, the dirty liquid cavity is communicated with the negative pressure cavity through a partition plate, the partition plate is sealedly connected with the side wall of the negative pressure cavity around, the central region of the partition plate is uniformly provided with filter holes, one side edge of the partition plate forms an air chamber with the side wall of the negative pressure cavity, the air chamber is communicated with the clean liquid cavity through an exhaust structure, the air in the air chamber is exhausted through the exhaust structure, and the clean liquid cavity is supplemented with liquid through the exhaust structure. The negative pressure filtration system provided by the application, the exhaust structure of the system adopts a jet device, air in the negative pressure cavity is exhausted through the formation of negative pressure in the jet device by high-speed liquid flow.

Description

Technical Field

[0001] This invention relates to the field of chip conveyor technology, and more specifically, to a negative pressure filtration system for chip conveyors. Background Technology

[0002] The vacuum chamber exhaust structure of a negative pressure filtration system is primarily designed to remove air trapped within the sealed space formed by the liquid and the chamber partition, ensuring the smooth formation of negative pressure during system operation. Currently, many commercially available negative pressure filtration systems lack this exhaust structure. In practice, the air trapped within the sealed space of the vacuum chamber partition significantly impacts negative pressure formation, severely affecting production and operation. In contrast, negative pressure filtration systems with an exhaust structure primarily utilize compressed air as a power source in their jet-flow structure. Their vacuum chamber is a flat cubic cavity, and the air in the sealed space above the chamber is dispersed around its perimeter. The exhaust structure cannot effectively remove all the air from the chamber in a timely manner, hindering negative pressure formation. This, in turn, lengthens the filter paper replacement cycle, affecting filtration accuracy and system liquid supply flow rate. Furthermore, exhaust structures powered by air require an additional air supply structure, increasing system operating costs. Summary of the Invention

[0003] Therefore, it is necessary to provide a new type of negative pressure filtration system to address the problems of air not being able to be discharged from the negative pressure chamber in a timely manner and the high cost of existing exhaust structures in the existing technology. The exhaust structure of this system adopts an ejector, which creates negative pressure in the ejector through high-speed liquid flow, thereby expelling the air from the negative pressure chamber.

[0004] A negative pressure filtration system includes a dirty liquid chamber, a negative pressure chamber, and a clean liquid chamber. The dirty liquid chamber and the negative pressure chamber are connected by a partition. The partition is sealed to the side wall of the negative pressure chamber on all four sides. Filter holes are evenly distributed in the central area of ​​the partition. One side of the partition forms an air chamber with the side wall of the negative pressure chamber. The air chamber is connected to the clean liquid chamber through an exhaust structure. The air in the air chamber is emptied through the exhaust structure, and the clean liquid chamber is replenished through the exhaust structure.

[0005] Furthermore, the exhaust structure includes an exhaust pipe connected to the air chamber, a jet pipe connected to the exhaust pipe, and a replenishment pipe connected to the jet pipe via a three-way valve. One end of the replenishment pipe is connected to the clean liquid chamber, and the other end of the replenishment pipe is connected to the vacuum pump.

[0006] Furthermore, the exhaust pipe and the jet pipe are connected by an ejector.

[0007] Furthermore, the first end of the ejector is connected to the end of the exhaust pipe away from the air chamber, the second end and the third end of the ejector are respectively connected to the ejection pipe, the second end is close to the three-way valve, the third end is close to the outlet of the ejection pipe, and the second end is used for water inlet.

[0008] Furthermore, the diameter of the second end gradually decreases along the direction of water inflow.

[0009] Furthermore, the air in the air chamber is discharged from the outlet of the jet pipe. After the air in the air chamber is completely discharged, the purified liquid in the negative pressure chamber is replenished into the purified liquid chamber through the exhaust structure.

[0010] Furthermore, one side of the partition is configured as an arc segment without filter holes, and the arc segment is sealed to the side wall of the clean liquid chamber.

[0011] The beneficial effects of this invention are: 1. The present invention provides a negative pressure filtration system in which the exhaust structure is connected to a vacuum pump through a liquid replenishment pipeline, thereby replenishing the exhaust structure with clean and pressurized liquid as the power source for the exhaust structure, eliminating the need for an additional air source, making the structure simpler and saving costs.

[0012] 2. In this application, the exhaust pipe and the jet pipe are connected by an ejector. The inlet of the ejector is designed with a gradually decreasing diameter. When the liquid entering the jet pipe through the replenishment pipe flows through the inlet of the ejector, it will form a high-pressure and high-speed liquid that is sprayed into the jet pipe due to the gradually decreasing diameter. This creates a continuous negative pressure at the connection between the ejector and the exhaust pipe, which allows the air in the air chamber to be quickly discharged. After the air is discharged, the negative pressure here will allow the clean liquid in the negative pressure chamber to be replenished into the clean liquid tank through the exhaust pipe.

[0013] 3. The tail end of the partition in this application is provided with an arc end, so that the negative pressure cavity forms a sealed air chamber, which is conducive to the accumulation of air in the air chamber, thereby effectively expelling the gas in the air chamber. Attached Figure Description

[0014] Figure 1 This is a front view of a negative pressure filtration system according to the present invention; Figure 2 This is a schematic diagram of the jet ejector of the present invention; Figure 3 This is a top view of the partition of the present invention. Attached Figure

[0015] 100 Dirty liquid chamber, 200 Negative pressure chamber, 300 Clean liquid chamber, 400 Exhaust structure, 210 Partition plate, 220 Air chamber, 410 Exhaust pipe, 420 Jet pipe, 430 Three-way valve, 440 Liquid replenishment pipe, 450 Jet ejector, 211 Filter hole, 212 Arc segment, 451 First end, 452 Second end, 453 Third end. Detailed Implementation

[0016] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0017] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," "top," "bottom," "end," "top," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] This invention provides a negative pressure filtration system, which includes a dirty liquid chamber, a negative pressure chamber, and a clean liquid chamber. The dirty liquid chamber and the negative pressure chamber are connected by a partition. The partition is sealed to the side wall of the negative pressure chamber on all four sides. Filter holes are evenly distributed in the central area of ​​the partition. One side of the partition forms an air chamber with the side wall of the negative pressure chamber. The air chamber is connected to the clean liquid chamber through an exhaust structure. The air in the air chamber is emptied through the exhaust structure, and the clean liquid chamber is replenished through the exhaust structure.

[0020] This invention provides a negative pressure filtration system. As the liquid in the dirty liquid chamber is continuously filtered, the filtered clean liquid flows into the negative pressure chamber through the filter holes. Over time, debris on the baffle gradually accumulates and blocks the filter holes, causing the liquid level in the negative pressure chamber to rise continuously. Air gradually accumulates between the baffle and the liquid surface of the negative pressure chamber. If the air in the negative pressure chamber cannot be discharged in time, the air between the liquid surface and the baffle will become larger and larger, and the filtration of the liquid in the dirty liquid tank will stagnate, resulting in a severe reduction in filtration efficiency. Therefore, discharging the air between the liquid surface and the baffle is crucial for the normal operation of the entire filtration system. This invention sets up an air chamber to collect the air between the liquid surface and the baffle into the air chamber. The air chamber is then discharged through an exhaust structure, effectively ensuring the effective operation of the filtration system.

[0021] The following description, in conjunction with specific embodiments, illustrates a negative pressure filtration system to further illustrate the inventive concept of the negative pressure filtration system.

[0022] like Figure 1 and Figure 3 As shown, the negative pressure filtration system includes a dirty liquid chamber 100, a negative pressure chamber 200, and a clean liquid chamber 300. The dirty liquid chamber 100 and the negative pressure chamber 200 are connected by a partition 210. The partition 210 is sealed to the side wall of the negative pressure chamber 200 on all four sides. Filter holes 211 are evenly distributed in the central area of ​​the partition 210. One side of the partition 210 forms an air chamber 220 with the side wall of the negative pressure chamber 200. The air chamber 220 is connected to the clean liquid chamber 200 through an exhaust structure 400. The air in the air chamber 220 is emptied through the exhaust structure 400, and the clean liquid chamber 300 is replenished through the exhaust structure 400.

[0023] In another embodiment, such as Figure 1-2As shown, the exhaust structure 400 includes an exhaust pipe 410 connected to the air chamber 220, a jet pipe 420 connected to the exhaust pipe 410, and a replenishment pipe 440 connected to the jet pipe 420 via a three-way valve 430. One end of the replenishment pipe 440 is connected to the clean liquid chamber 300, and the other end of the replenishment pipe 440 is connected to a vacuum pump (not shown in the figure). The vacuum pump is connected to the negative pressure chamber 200, and the clean liquid in the negative pressure chamber 200 is discharged through the vacuum pump. The exhaust pipe 410 and the jet pipe 420 are connected by an ejector 450. Specifically, the first end 451 of the ejector 450 is connected to the end of the exhaust pipe 410 away from the air chamber 220, and the second end 452 and the third end 453 of the ejector 450 are respectively connected to the jet pipe 420. The second end 452 is close to the three-way valve 430, and the third end 453 is close to the outlet of the jet pipe 420. The second end 452 is used for water inlet, and the diameter of the second end 452 gradually decreases along the direction of water inlet. In this invention, a pipeline is led out from the vacuum pump as a replenishment pipeline 440. The clean liquid in the replenishment pipeline 440 branching from the vacuum pump is pressurized. When the clean liquid in the replenishment pipeline 440 enters the jet pipeline 420 through the three-way valve 430, when it passes through the jet injector 450, the diameter of the second end 452, which serves as the water inlet, gradually decreases, and the liquid flow will be sprayed in the jet injector 450. This creates a continuous negative pressure at the first end 451 connected to the exhaust pipeline 410, applying a suction force to the exhaust pipeline 3, thereby expelling the air in the air chamber 220. After the air in the air chamber 220 is exhausted, the negative pressure will also cause the exhaust pipeline 410 to draw the clean liquid in the negative pressure chamber 200 into the clean liquid tank 300 for replenishment. The purified liquid flows from the replenishment pipe 440 through the three-way valve 430, then into the jet pipe 420, and after passing through the ejector 450, it is discharged from the outlet of the jet pipe 420 to replenish the purified liquid tank 300. Therefore, the exhaust structure 400 in this invention is directly connected to the vacuum pump. The high-pressure, high-speed liquid flow drawn by the vacuum pump creates a negative pressure at the connection between the ejector and the drain pipe, thereby drawing out the air from the air chamber. After the air is exhausted, the continuous negative pressure will replenish the purified liquid in the negative pressure chamber into the purified liquid chamber. This structure eliminates the need for an additional air source, reduces costs, is simple in structure, and has a significant exhaust effect.

[0024] In another embodiment, the air in the air chamber 220 is discharged from the free end of the jet pipe 420. After the air in the air chamber 220 is completely emptied, the purified liquid in the negative pressure chamber 200 is replenished into the purified liquid chamber 300 through the exhaust structure 400. That is, the exhaust structure in this application can both discharge the air in the negative pressure chamber and replenish the purified liquid chamber 300.

[0025] In another embodiment, one side of the partition 210 is configured as an arc segment 230 without filter holes 210. The arc segment 230 extends toward the dirty liquid chamber 100 and is sealed to the side wall of the clean liquid chamber 300, forming an air chamber 220 between the arc segment 230 and the side wall of the negative pressure chamber 200. This allows air to accumulate in the air chamber 220, and the exhaust pipe 410 communicates with the air chamber 220 to discharge the air accumulated in the air chamber 220. After the air in the air chamber 220 is exhausted, the liquid level in the negative pressure chamber 200 rises to the air chamber 220. The clean liquid in the air chamber 220 flows through the exhaust pipe 410, through the ejector, and finally out of the free end of the ejector pipe 420, replenishing the clean liquid chamber 300.

[0026] In another embodiment, the filter hole 210 is provided in the middle region of the partition 210, and the partition 210 is surrounded by a non-porous sealing plate. The non-porous sealing plate around the perimeter is sealed and welded to the side wall of the negative pressure chamber 200.

[0027] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A negative pressure filtration system, characterized in that, The negative pressure filtration system includes a dirty liquid chamber (100), a negative pressure chamber (200), and a clean liquid chamber (300). The dirty liquid chamber (100) and the negative pressure chamber (200) are connected by a partition (210). The partition (210) is sealed to the side wall of the negative pressure chamber (200) around its perimeter. Filter holes (211) are evenly opened in the central area of ​​the partition (210). One side of the partition (210) forms an air chamber (220) with the side wall of the negative pressure chamber (200). The air chamber (220) is connected to the clean liquid chamber (300) through an exhaust structure (400). The air in the air chamber (220) is emptied through the exhaust structure (400), and the clean liquid chamber (300) is replenished through the exhaust structure (400).

2. The negative pressure filtration system according to claim 1, characterized in that, The exhaust structure (400) includes an exhaust pipe (410) connected to the air chamber (220), a jet pipe (420) connected to the exhaust pipe (410), and a replenishment pipe (440) connected to the jet pipe (420) via a three-way valve (430). One end of the replenishment pipe (440) is connected to the clean liquid chamber (300), and the other end of the replenishment pipe (440) is connected to a vacuum pump.

3. The negative pressure filtration system according to claim 2, characterized in that, The exhaust pipe (410) and the jet pipe (420) are connected by a jet injector (450).

4. The negative pressure filtration system according to claim 3, characterized in that, The first end (451) of the jet ejector (450) is connected to the end of the exhaust pipe (410) away from the air chamber (220). The second end (452) and the third end (453) of the jet ejector (450) are respectively connected to the jet pipe (420). The second end (452) is close to the three-way valve (430), and the third end (453) is close to the outlet of the jet pipe (420). The second end (452) is used for water inlet.

5. A negative pressure filtration system according to claim 4, characterized in that, The diameter of the second end (452) gradually decreases along the direction of water inflow.

6. A negative pressure filtration system according to claim 4, characterized in that, The air in the air chamber (220) is discharged from the outlet of the jet pipe (420). After the air in the air chamber (220) is completely discharged, the clean liquid in the negative pressure chamber (200) is replenished into the clean liquid chamber (300) through the exhaust structure (400).

7. A negative pressure filtration system according to claim 1, characterized in that, One side of the partition (210) is configured as an arc segment (212) without filter holes (210), and the arc segment (212) is sealed to the side wall of the clean liquid chamber (300).

8. A negative pressure filtration system according to claim 1, characterized in that, The filter hole (211) is provided in the middle area of ​​the partition (210), and the partition (210) is surrounded by a non-porous sealing plate.

Images