Single bag in-line filter for liquid impurities

Abstract

The utility model discloses a kind of single-bag series filter for liquid impurity rejection, including conveying pump, first filter tank, liquid feeding pipe and second filter tank, and the output end of conveying pump is connected with pumping pipe, and first filter tank is connected by pumping pipe, first filter tank includes tank body, inner filter cartridge, filter bag, lower pressure piece, tank cover and pressure gauge;By cooperating filtering through series connection mode of first filter tank and second filter tank, impurity can be effectively removed, and first filter tank and second filter tank are all multiple fixed structure composed of inner filter cartridge, filter bag and lower pressure piece, inner filter cartridge provides main support, metal ring of filter bag is embedded on filter cartridge step seat, realizes preliminary positioning, annular lower pressure edge of lower pressure piece is inserted into filter bag, and when tank cover is closed, it is further compressed by arc-shaped handle, form top-down pressure, can effectively prevent filter bag from falling off from inner filter cartridge under liquid impact and gravity, ensure the stability and reliability of filtering process.

Description

Technical Field

[0001] This utility model specifically relates to a single-bag series filter for removing liquid impurities. Background Technology

[0002] A bag filter is a novel, compact, easy-to-operate, energy-saving, highly efficient, sealed, and versatile filtration device. It is a new type of filtration system. Inside, a metal mesh basket supports the filter bag. Liquid flows in through the inlet, is filtered by the filter bag, and flows out through the outlet. Impurities are trapped in the filter bag, and the filter can be reused after the filter bag is replaced.

[0003] To improve filtration efficiency, existing bag filters typically use multiple filter bag sets. However, while multiple filter bag sets can improve filtration quality, they do not improve filtration efficiency. Furthermore, when the pump pressure is unstable or the flow rate is high, simply placing the filter bag can easily cause it to detach from the support basket, be flattened, or develop wrinkles. This allows unfiltered liquid to flow directly through the gap between the filter bag and the inner filter cartridge, severely compromising the filtration effect. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a single-bag series filter for removing liquid impurities.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A single-bag series filter for removing liquid impurities includes a delivery pump, a first filter tank connected to the delivery pump, a liquid delivery pipe connected to the bottom of the first filter tank, a second filter tank with the same structure as the first filter tank connected in series with the first filter tank via the liquid delivery pipe, a pumping pipe connected to the output end of the delivery pump and connected to the first filter tank via the pumping pipe, the first filter tank including a tank body, an inner filter cylinder with mesh placed inside the tank body, a filter bag placed inside the inner filter cylinder, a pressing member placed inside the tank body for squeezing and fixing the inner filter cylinder and the filter bag, a tank cover hinged to the tank body and sealed to the tank body, and a pressure gauge installed on the tank cover.

[0006] Preferably, an inlet pipe is provided on the upper side of the tank, and an outlet pipe is provided on the bottom of the tank, with a one-way valve installed on the outlet pipe.

[0007] Preferably, a hinge lug is welded to the upper edge of the tank body, and several locking studs are mounted on the hinge lug via a fixed shaft. A sealing ring is embedded in the upper end of the tank body.

[0008] Preferably, a wall ring is provided at the upper part of the inside of the tank, and a wall ring stepped seat is provided above the wall ring to support the inner filter cartridge.

[0009] Preferably, the upper end of the inner filter cartridge is provided with a filter cartridge mounting ring, and the inner side of the filter cartridge mounting ring is provided with a filter cartridge stepped seat for hanging filter bags.

[0010] Preferably, a metal ring is fitted onto the upper end of the filter bag.

[0011] Preferably, the middle part of the pressing part is hollowed out, and an annular pressing edge is integrally formed in the hollowed-out part. An arc-shaped handle is welded on the top of the pressing part, and the arc-shaped handle contacts the bottom of the can lid.

[0012] Preferably, the edge of the lid is provided with locking lugs.

[0013] The beneficial effects of this invention are as follows: By connecting the first and second filter tanks in series, two-stage filtration of the liquid is achieved, which not only improves the overall filtration efficiency but also significantly enhances the filtration accuracy, ensuring that impurities are removed more thoroughly. Furthermore, both the first and second filter tanks adopt a multi-fixed structure consisting of an inner filter cylinder, a filter bag, and a pressing component. The inner filter cylinder provides the main support, and the metal ring of the filter bag is embedded in the stepped seat of the filter cylinder for initial positioning. The annular pressing edge of the pressing component is inserted into the filter bag and is further pressed by the arc-shaped handle when the tank lid is closed, forming a downward pressure that effectively prevents the filter bag from falling out of the inner filter cylinder under the impact of liquid and gravity, thus ensuring the stability and reliability of the filtration process. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a single-bag series filter for removing liquid impurities according to this utility model; Figure 2 for Figure 1 Exploded view of the first filter tank in the middle; Figure 3 for Figure 2 Cross-sectional view of the middle tank; Figure 4 for Figure 2 Internal structure diagram of the first filter tank; Figure 5 for Figure 4 Enlarged view of a partial view at point A in the middle. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0016] Example like Figure 1-5As shown, a single-bag series filter for removing liquid impurities includes a delivery pump 1, a first filter tank 2 connected to the delivery pump 1, a liquid delivery pipe 3 connected to the bottom of the first filter tank 2, and a second filter tank 4 connected in series with the first filter tank 2 through the liquid delivery pipe 3 and having the same structure as the first filter tank 2.

[0017] The output end of the delivery pump 1 is connected to a pumping pipe 11, and the first filter tank 2 is connected through the pumping pipe 11.

[0018] The first filter tank 2 includes a tank body 21, an inner filter cylinder 22 with mesh placed inside the tank body 21, a filter bag 23 placed inside the inner filter cylinder 22, a pressing member 24 placed inside the tank body 21 for pressing and fixing the inner filter cylinder 22 and the filter bag 23, a tank cover 25 hinged to the tank body 21 and sealed to the tank body 21, and a pressure gauge 26 installed above the tank cover 25.

[0019] It should be further noted that if the value of the pressure gauge 26 gradually increases, it indicates that the filter bag 23 is clogged. The operator must replace the filter bag 23 in time to avoid affecting the filtration effect.

[0020] The upper side of the tank body 21 is provided with an inlet pipe 211, and the bottom of the tank body 21 is provided with an outlet pipe 212. A one-way valve 213 is installed on the outlet pipe 212. Specifically, the transfer pump 1 connects to the inlet pipe 211 through the pumping pipe 11 to pump liquid into the first filter tank 2, while the one-way valve 213 connects to the second filter tank 4 through the delivery pipe 3 to receive the liquid that has been filtered once in the first filter tank 2 for secondary treatment.

[0021] A hinge lug 214 is welded to the upper edge of the tank body 21, and several locking studs 215 are mounted on the hinge lug 214 via a fixed shaft. A sealing ring 216 is embedded in the upper end of the tank body 21. Specifically, the locking studs 215 can cooperate with the tank cover 25 to cover the tank body 21, and the sealing ring 216 plays a sealing role when the tank cover 25 squeezes the tank body 21 to close it, so as to avoid pressure leakage and affect the detection results of the pressure gauge 26.

[0022] The upper part of the tank body 21 is also provided with a wall ring 217, and a wall ring step seat 218 for supporting the inner filter cylinder 22 is provided above the wall ring 217.

[0023] The upper end of the inner filter cartridge 22 is provided with a filter cartridge mounting ring 221. The inner side of the filter cartridge mounting ring 221 is provided with a filter cartridge step seat 222 for hanging the filter bag 23. Specifically, the filter cartridge mounting ring 221 can be mounted with the wall ring step seat 218, which can not only support the inner filter cartridge 22, but also make the filter cartridge mounting ring 221 and the wall ring 217 on the same horizontal plane.

[0024] A metal ring 231 is fitted onto the upper end of the filter bag 23. Specifically, the metal ring 231 can not only open the filter bag 23 to filter the liquid, but also be embedded in the filter cartridge stepped seat 222 to support the filter bag 23 through the inner filter cartridge 22.

[0025] The middle part of the pressure member 24 is hollowed out, and an annular pressure edge 241 is integrally formed in the hollowed-out part. An arc-shaped handle 242 is welded on the top of the pressure member 24, and the arc-shaped handle 242 contacts the bottom of the can cover 25. Specifically, the annular pressure edge 241 of the pressure member 24 can be inserted into the interior of the filter bag 23 and used with the filter cartridge stepped seat 222 to fix the filter bag 23. The function of the arc-shaped handle 242 is that when the can cover 25 squeezes the can body 21 to close it, the bottom of the can cover 25 will also squeeze the arc-shaped handle 242, so that the pressure member 24 can fully squeeze and fix the filter bag 23, and prevent the filter bag from falling out of the inner filter cartridge 22 due to the weight of the liquid, thereby affecting filtration.

[0026] The edge of the can lid 25 is provided with locking lugs 251. Specifically, the number of locking lugs 251 is the same as the number of locking studs 215. When the can lid 25 is placed on the can body 21, the locking studs 215 are placed on the locking lugs 251, and then the nuts are tightened, so that the can lid 25 can press the can body 21 to seal it.

[0027] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A single-bag series filter for removing liquid impurities, comprising a delivery pump, a first filter tank connected to the delivery pump, a liquid delivery pipe connected to the bottom of the first filter tank, a second filter tank with the same structure as the first filter tank connected in series with the first filter tank via the liquid delivery pipe, and a pumping pipe connected to the output end of the delivery pump and connected to the first filter tank via the pumping pipe, characterized in that, The first filter tank includes a tank body, an inner filter cartridge with mesh placed inside the tank body, a filter bag placed inside the inner filter cartridge, a pressure member placed inside the tank body for pressing and fixing the inner filter cartridge and filter bag, a tank cover hinged to the tank body and sealed to the tank body, and a pressure gauge installed on the top of the tank cover.

2. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, The tank has an inlet pipe at the top side and an outlet pipe at the bottom, with a check valve installed on the outlet pipe.

3. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, The upper edge of the tank is welded with hinged lugs, and several locking studs are mounted on the hinged lugs via a fixed shaft. A sealing ring is embedded in the upper end of the tank.

4. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, The upper part of the tank is also equipped with a wall ring, and a stepped seat for supporting the inner filter cartridge is provided above the wall ring.

5. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, The upper end of the inner filter cartridge is provided with a filter cartridge mounting ring, and the inner side of the filter cartridge mounting ring is provided with a filter cartridge stepped seat for hanging filter bags.

6. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, A metal ring is threaded through the upper end of the filter bag.

7. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, The middle part of the pressing part is hollowed out, and an annular pressing edge is integrally formed in the hollowed-out part. An arc-shaped handle is welded on the top of the pressing part, and the arc-shaped handle contacts the bottom of the can lid.

8. The single-bag series filter for removing liquid impurities according to claim 1, characterized in that, The edge of the lid is equipped with locking lugs.

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