Micro-pressure buffer tank air inlet filter device

Abstract

This invention discloses a micro-pressure buffer tank inlet air filtration device, comprising: a top plate and a bottom plate disposed opposite to each other, the bottom plate having an opening; a connecting flange connected to the bottom side of the bottom plate for connection to the air inlet of the inlet buffer tank; a primary filter unit disposed between the top plate and the bottom plate; and a horizontally arranged filter screen on the top of the bottom plate. This device ensures air cleanliness, reduces air noise, and extends the lifespan of the gas separation equipment.

Description

Technical Field

[0001] This invention relates to the field of gas filtration, and more particularly to a micro-pressure buffer tank inlet filtration device. Background Technology

[0002] VPSA oxygen production plays an important role in the energy-saving and carbon-reduction technology transformation of high-energy-consuming industries in my country. Compared with PSA gas separation technology, VPSA oxygen production system has a large demand for raw air and low pressure, generally between 25-55 kPa.

[0003] In existing VPSA oxygen generation systems, plate filters are typically installed at the air inlet of the micro-pressure buffer tank. While this achieves a certain level of air filtration, the small air passage area of ​​the plate filter leads to high intake noise and resistance. Furthermore, the filter units are not easily replaceable, resulting in poor filtration performance. Therefore, this paper proposes an air inlet filtration device for the micro-pressure buffer tank. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a micro-pressure buffer tank air intake filtration device, which filters the raw material air by setting a primary filter component, and reduces noise during the filtration process, thereby solving the air purification problem in the prior art.

[0005] To achieve the above objectives, embodiments of the present invention provide a micro-pressure buffer tank air inlet filtration device, comprising: a top plate and a bottom plate disposed opposite to each other, the bottom plate having an opening; a docking flange connected to the bottom side of the bottom plate for connection to the air inlet of the air inlet buffer tank; a primary filter unit disposed between the top plate and the bottom plate; and a horizontally disposed filter screen on the top of the bottom plate.

[0006] Further optionally, the primary filter unit includes a G4 plate filter; four G4 plate filters form a filter surface, and the four filter surfaces together form the primary filter unit.

[0007] Further optionally, the perforation rate of the base plate is greater than 60%.

[0008] Optionally, the diameter of each opening in the base plate is not less than 10 mm.

[0009] Alternatively, the filter screen may be a stainless steel wire mesh.

[0010] Further optionally, the filter screen comprises a 40-mesh stainless steel wire mesh.

[0011] Alternatively, two adjacent filter surfaces can be connected by a vertical channel steel track.

[0012] Alternatively, the filter screen can be connected to the base plate via a pressure plate and rivets.

[0013] Alternatively, the center of gravity of the primary filter unit is on the same vertical line as the center of gravity of the intake buffer tank.

[0014] Alternatively, the top plate may be a steel blind plate.

[0015] The above technical solution has the following beneficial effects: By setting up a four-sided air intake scheme, the gas is initially filtered to ensure the cleanliness of the gas while ensuring the gas volume and reducing the impact of the gas on the filter screen and the base plate; the four-sided air intake scheme reduces the intake pressure, thereby reducing the intake noise to below 85dB, avoiding the shortened lifespan of the oxygen molecular sieve and noise pollution caused by excessive noise due to raw material air contamination, ensuring stable operation of the whole machine, improving the service life of the gas separation system, and increasing the market share of gas products in related fields. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the micro-pressure buffer tank air inlet filter provided in an embodiment of the present invention.

[0018] Attached reference numerals: 1-Top plate; 2-Bottom plate; 3-Filter screen; 4-Connecting flange; 5-Primary filter unit; 6-Channel steel track. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] To address the problem of raw material air pollution in existing technologies, this invention provides a micro-pressure buffer tank inlet filter, comprising: a top plate 1 and a bottom plate 2 disposed opposite to each other, the bottom plate 2 having an opening; a connecting flange 4 connected to the bottom side of the bottom plate 2 for connecting to the air inlet of the inlet buffer tank; a primary filter unit 5 disposed between the top plate 1 and the bottom plate 2; and a horizontally disposed filter screen 3 on the top of the bottom plate 2.

[0021] Figure 1 This is a schematic diagram of the structure of the micro-pressure buffer tank inlet filter provided in an embodiment of the present invention, as shown below. Figure 1 As shown, the top plate 1 and the bottom plate 2 are set accordingly. The primary filter unit 5, the top plate 1, and the bottom plate 2 together form a rectangle. The rectangle is hollow, allowing air to pass through.

[0022] A filter screen 3 is horizontally installed on the top of the base plate 2. The base plate 2 itself has openings for further filtration of the gas entering the primary filter unit 5.

[0023] The bottom of the base plate 2 is connected to a mating flange 4. The opening of the mating flange 4 is adapted to the air inlet of the air inlet buffer tank to seal the air inlet filter device of the micro-pressure buffer tank to the air inlet buffer tank.

[0024] Furthermore, an inclined connecting plate is connected to each side of the base plate 2, and the four connecting plates together fix the docking flange 4. The docking flange 4 with different pipe diameters can be adapted to various models of VPSA gas separation equipment.

[0025] During operation, external air enters through the four primary filter units 5, ensuring sufficient air volume while reducing the airflow velocity through the primary filter units 5 and mitigating the impact of the air on the filter screen 3 and base plate 2. This also reduces intake noise. The air entering the primary filter units 5 is filtered again by the filter screen 3 and base plate 2 before entering the intake buffer tank through the docking flange 4, ready for subsequent operations. The filtration process through the primary filter units 5, filter screen 3, and base plate 2 ensures the cleanliness of the intake air.

[0026] As an optional implementation, the primary filter unit 5 includes a G4 plate filter; every four G4 plate filters form a filter surface, and the four filter surfaces together form the primary filter unit 5.

[0027] G4 panel filters use non-woven fabric, glass fiber, or other materials as filter media. Their wedge-shaped folded design increases the filtration area, and they are supported by metal wire mesh clamps or an internal metal frame, all fitted with a metal outer frame to create a specialized panel filter device. The outer frame is made of metal or moisture-proof, water-resistant virgin wood fiberboard, making it lightweight, easy to install, and aesthetically pleasing. The internal filter media uses a combined inner frame compression design or adhesive technology to ensure the filter's airtightness and prevent leakage. Internal metal parts are powder-coated or galvanized to prevent rust. The non-woven fabric filter media's outlet surface is finished to prevent fiber breakage and scattering that could cause secondary pollution. The metal frame products allow for easy filter media replacement and cleaning, and the outer frame is reusable, saving on air conditioning operating costs. The filter has low initial resistance and a large dust holding capacity.

[0028] In this embodiment, the primary filter unit 5 is equipped with 16 G4 plate filters. It is designed with a four-sided air intake scheme to reduce the flow rate of gas through the G4 plate filters while ensuring the system's air consumption, thereby reducing the impact on the filter screen 3 and the base plate 2, and also reducing the intake noise.

[0029] As an optional implementation, the opening ratio of the base plate 2 is greater than 60%.

[0030] As an optional implementation, the diameter of each opening in the base plate 2 is not less than 10 mm.

[0031] As an optional implementation, the filter screen 3 is a stainless steel wire mesh.

[0032] As an optional implementation, the filter screen 3 comprises a 40-mesh stainless steel wire mesh.

[0033] The bottom plate 2 has an opening rate of more than 60%, and the hole diameter is not less than 10mm. The perforated plate is covered with 40-mesh stainless steel wire mesh (0.45 / 0.2), and the wire mesh material is 304 stainless steel.

[0034] As an optional implementation, two adjacent filter surfaces are connected by a vertical channel steel rail 6.

[0035] In this embodiment, a vertical track clamping scheme is set up using a combination of channel steel and angle steel to insert the primary filter unit 5 into the channel steel track 6, ensuring the stability and reliability of the G4 plate filter under atmospheric volume and low pressure conditions.

[0036] As an optional implementation, the filter screen 3 is connected to the base plate 2 by a pressure plate and rivets.

[0037] The wire mesh is fixed to the base plate 2 with pressure plates and rivets to ensure that the filter screen 3 will not fall off under micro-pressure and atmospheric pressure.

[0038] As an optional implementation, the center of gravity of the primary filter unit 5 is on the same vertical line as the center of gravity of the intake buffer tank.

[0039] The center of the primary filter unit 5 is on the same vertical line as the center of gravity of the intake buffer tank. Furthermore, the center of gravity of the entire micro-pressure buffer tank intake filter is also on the same vertical line as the center of gravity of the intake buffer tank, ensuring stable and safe installation.

[0040] As an optional implementation, the top plate 1 is a steel blind plate.

[0041] The above technical solution has the following beneficial effects: By setting up a four-sided air intake scheme, the gas is initially filtered to ensure the cleanliness of the gas while ensuring the gas volume and reducing the impact of the gas on the filter screen and the base plate; the four-sided air intake scheme reduces the intake pressure, thereby reducing the intake noise to below 85dB, avoiding the shortened lifespan of the oxygen molecular sieve and noise pollution caused by excessive noise due to raw material air contamination, ensuring stable operation of the whole machine, improving the service life of the gas separation system, and increasing the market share of gas products in related fields.

[0042] The above-described specific embodiments of the invention further illustrate the purpose, technical solution, and beneficial effects of the invention. It should be understood that the above content is only for specific embodiments of the invention and is not intended to limit the scope of protection of the invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A micro-pressure buffer tank air inlet filtration device, characterized in that, include: A top plate and a bottom plate are positioned opposite each other, with the bottom plate having an opening; A docking flange is connected to the bottom side of the base plate and is used to connect to the air inlet of the air inlet buffer tank. A primary filter unit is disposed between the top plate and the bottom plate; The top of the base plate is provided with a horizontally arranged filter screen; The primary filtration unit includes a G4 plate filter; Four G4 plate filters form a filter surface, and four filter surfaces together form the primary filter unit. The opening ratio of the base plate is greater than 60%; The diameter of each opening in the base plate is not less than 10mm; The filter screen includes a 40-mesh stainless steel wire mesh; Adjacent filter surfaces are connected by vertical channel steel rails.

2. The micro-pressure buffer tank air inlet filter device according to claim 1, characterized in that: The filter screen is made of stainless steel wire mesh.

3. The micro-pressure buffer tank air inlet filtration device according to claim 1, characterized in that: The filter screen is connected to the base plate by a pressure plate and rivets.

4. The micro-pressure buffer tank air inlet filter device according to claim 1, characterized in that: The center of gravity of the primary filter unit is on the same vertical line as the center of gravity of the intake buffer tank.

5. The micro-pressure buffer tank air inlet filter device according to claim 1, characterized in that: The top plate is a steel blind plate.

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