Flow dividing pipeline assembly for filter

Abstract

The utility model discloses a shunting pipeline assembly for a filter, which relates to the field of filters, and adopts the technical scheme that the shunting pipeline assembly comprises a central pipe positioned in a filter element, the head part of the central pipe is communicated and connected with a main pipeline, and an auxiliary liquid outlet pipe is arranged in the central pipe; the top and the bottom of the auxiliary liquid outlet pipe extend out from the upper opening and the lower opening of the central pipe, the bottom of the auxiliary liquid outlet pipe can extend to the bottom of the filtering tank body to absorb residual liquid at the bottom of the filtering tank body and filter the liquid through the filter element, and the top of the auxiliary liquid outlet pipe penetrates through the main pipeline and is in sealed connection with the main pipeline; the top of the main pipeline is provided with an auxiliary pipeline communicated with the auxiliary liquid outlet pipe, so that liquid outlet of the central pipe and liquid outlet of the auxiliary liquid outlet pipe can be controlled respectively.

Description

Technical Field

[0001] The utility model relates to the field of filters, and more specifically, to a flow dividing pipeline component for filters. Background Art

[0002] A filter is a device or equipment used to separate, screen or purify substances. It can block or retain larger particles, impurities, suspended solids, etc. through specific filter media, such as filter screens, filter membranes, filter elements, etc., while allowing smaller particles or fluids to pass through. Filters play an important role in many fields. For example, they are used to filter impurities in liquids or gases in industrial production to ensure the normal operation of the production process and product quality; in the field of water treatment, they can remove pollutants and harmful substances in water and provide clean water; in air purification systems, they can filter dust, pollen, bacteria, etc. in the air to improve indoor air quality; in automobile engines, oil filters can protect the engine from wear and failure.

[0003] After the traditional filter completes the filtration, filtrate (hereinafter referred to as residual liquid) will remain at the bottom of the filter tank (the tank body of the filter). The residual liquid is often filtered out by injecting compressed gas to pressurize the inside of the filter tank. However, the method of filtering the residual liquid by gas pressurization will cause the gas to be discharged from the holes of the filter cartridge on the filter element before reaching the bottom of the tank, resulting in insufficient pressure. Some liquid still remains in the tank and cannot be filtered, affecting the liquid output.

[0004] To this end, some filter elements are equipped with an auxiliary liquid outlet pipe (improved filter element) inside the original central tube. The auxiliary liquid outlet pipe is longer than the central tube, so that it can extend to the bottom of the filter tank to filter and discharge the residual liquid, so as to increase the liquid output. However, the existing liquid outlet pipeline is generally a single pipeline that cannot be adapted to it, and the purpose of separately controlling the liquid outlet cannot be achieved, resulting in poor use effect of the filter element (a single pipeline will have insufficient pump pressure, and the residual liquid is only a small part, so the auxiliary liquid outlet pipe is used less frequently. If it is not separated, it will seriously affect the normal liquid outlet efficiency).

[0005] Therefore, in order to solve the above technical problems, the present application proposes a flow diversion pipeline assembly for a filter. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model aims to provide a flow dividing pipe assembly for a filter.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a shunt pipe assembly for a filter, comprising a central tube located in a filter element, the head of the central tube being interconnected with a main pipe, an auxiliary liquid outlet pipe being arranged inside the central tube, and the top and bottom of the auxiliary liquid outlet pipe both extend from the upper and lower openings of the central tube, the bottom of which can extend to the bottom of the filter tank body to absorb the residual liquid at the bottom of the filter tank body and filter the liquid through the filter element, the top passes through the main pipe, the contact parts of the two are sealed and connected, and a secondary pipe interconnected with the auxiliary liquid outlet pipe is arranged on the top of the main pipe.

[0008] Preferably, the secondary pipe has a semicircular cross section and fits closely with the outer side wall of the primary pipe, thus saving materials.

[0009] Preferably, the main pipeline collects the normal filtrate flowing into the central pipe through the outer collecting pipe and then discharges it, and the secondary pipeline collects the residual liquid flowing into the auxiliary liquid outlet pipe through the inner collecting pipe and then discharges it, which makes rational use of space and is easy to manufacture.

[0010] Preferably, a transfer pipe is arranged between the main pipe and the external collecting pipe, and the branch pipe located inside the filter tank body is connected to the external collecting pipe through the transfer pipe. A connecting port is reserved at the bottom of the branch pipe for connecting with an ordinary filter element. In this way, the branch pipe connected through the transfer pipe can be assembled with an ordinary filter element, thereby improving the practicality of the component.

[0011] Preferably, the contact portion between the main pipe and the central pipe is sealed and connected via a mounting flange.

[0012] Preferably, the main pipe and the central pipe contact component are sealed and connected by welding.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The utility model uses a power source to act on the drainage pipeline of the central tube, and filters most of the filtrate through the upper filter element. The filtered filtrate enters the filter chamber, flows into the drainage pipeline from the central tube, enters the main pipeline through the central tube, and then is discharged after being collected in the outer collecting pipe. Then, compressed gas can be introduced into the upper part of the filter tank body to pressurize the residual liquid inside, so that part of the liquid can be filtered and discharged again through the pipeline. If there is still residual liquid in the tank body at this time, the power source can act on the drainage pipeline of the auxiliary liquid outlet pipe, and the residual liquid can be filtered through the filter element. After filtering, it enters the second drainage pipeline through the auxiliary liquid outlet pipe. The auxiliary liquid outlet pipe allows the residual liquid to flow into the secondary pipeline, and then it is discharged after being collected through the inner collecting pipe. In this way, the outlet liquid is divided into two pipelines, and the outlet liquid of the central tube and the auxiliary liquid outlet pipe can be controlled separately, thereby solving the problem that the existing outlet pipelines in the background technology are generally single pipelines that cannot be adapted to it, and the purpose of controlling the outlet liquid separately cannot be achieved, resulting in poor use effect of the filter element;

[0015] 2. The utility model distributes two collecting pipes inside and outside the filter tank, namely, an outer collecting pipe and an inner collecting pipe, so as to reasonably utilize space and facilitate manufacturing;

[0016] 3. The cross section of the auxiliary pipe of the utility model is semicircular and fits with the outer wall of the main pipe, so that it can share a side with the main pipe to save materials;

[0017] 4. The utility model connects the branch pipe inside the filter tank body with the external collecting pipe through a transfer pipe, and a connection port is reserved at the bottom of the branch pipe for connecting with a common filter element. In this way, the branch pipe connected through the transfer pipe can be assembled with a common filter element, thereby improving the practicality of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 For this utility model Figure 1 A schematic diagram of the structure from another angle;

[0021] Figure 3 This is a schematic diagram of the specific structure of the filter element of the utility model after removing the partition plate and the filter cartridge below;

[0022] Figure 4 This is a schematic diagram of the specific structure of the utility model after removing the lower filter cartridge from the bottom of the filter element;

[0023] Figure 5 This is a schematic diagram of the main pipeline connection structure of the utility model (excluding the secondary pipeline).

[0024] In the figure: 1, central pipe; 2, main pipe; 3, auxiliary liquid outlet pipe; 4, branch pipe; 5, secondary pipe; 6, filter element; 61, partition; 7, external collecting pipe; 8, internal collecting pipe; 9, transfer pipe. DETAILED DESCRIPTION

[0025] like Figure 1-5As shown, the utility model provides a shunt pipe assembly for a filter, comprising a central tube 1 located in a filter element 6, the head of the central tube 1 is interconnected with a main pipe 2, an auxiliary liquid outlet pipe 3 is arranged inside the central tube 1 (it should be noted that the filter cartridge of the filter element 6 is divided into two upper and lower sections by a partition plate 61, the filter cartridge at the lower end is used to filter residual liquid, and the filter cartridge at the upper end is used for normal filtration), and the top and bottom of the auxiliary liquid outlet pipe 3 both extend from the upper and lower openings of the central tube 1, and the bottom thereof can extend to the bottom of the filter tank body to absorb the residual liquid at the bottom of the filter tank body and filter the liquid through the filter element 6, the top passes through the main pipe 2, and the contact parts of the two are sealed and connected, and a secondary pipe 5 interconnected with the auxiliary liquid outlet pipe 3 is arranged on the top of the main pipe 2, the main pipe 2 collects the normal filtrate flowing into the central tube 1 through the outer collecting pipe 7 and then discharges it, and the secondary pipe 5 collects the residual liquid flowing into the auxiliary liquid outlet pipe 3 through the inner collecting pipe 8 and then discharges it.

[0026] During use, pressure is applied to the drainage pipeline (first drainage pipeline) of the central tube 1, and most of the filtrate is filtered through the filter cloth on the surface of the filter element 6. The filtered filtrate enters the filter cavity, flows into the drainage pipeline from the middle notch of the central tube 1, and then enters the main pipeline 2 through the central tube 1, and finally is discharged after being collected in the outer collecting pipe 7. Then, compressed gas can be introduced into the upper part of the filter tank body to pressurize the residual liquid inside it, so that part of the liquid can be filtered and discharged again through the pipeline. If there is still residual liquid in the tank body at this time, pressure can be applied to the drainage pipeline of the auxiliary liquid outlet pipe 3, and the residual liquid can be filtered through the filter cloth on the surface of the filter element 6. After filtering, it enters the second drainage pipeline through the auxiliary liquid outlet pipe 3, and the auxiliary liquid outlet pipe 3 flows the residual liquid into the secondary pipeline 5, which is then collected and discharged through the inner collecting pipe 8. In this way, the liquid is divided into two pipelines, and the liquid output of the central tube and the auxiliary liquid outlet pipe can be controlled separately.

[0027] The utility model distributes two collecting pipes inside and outside the filter tank body, namely, an outer collecting pipe 7 and an inner collecting pipe 8, so as to reasonably utilize space and facilitate manufacturing. Moreover, the cross section of the secondary pipe 5 is semicircular and fits with the outer side wall of the main pipe 2 (the two are connected by welding), so that it can share a side with the main pipe 2 to save materials. Moreover, a transfer pipe 9 is arranged between the main pipe 2 and the outer collecting pipe 7, and the branch pipe 4 located inside the filter tank body is connected to the outer collecting pipe 7 through the transfer pipe 9. A connecting port is reserved at the bottom of the branch pipe 4 for connecting with an ordinary filter element 6. In this way, the branch pipe 4 connected by the transfer pipe 9 can be assembled with an ordinary filter element 6 (the filter element 6 without the auxiliary liquid outlet pipe 3 is arranged inside the central pipe 1), thereby improving the practicality of the assembly (because the amount of residual liquid is small, the drainage does not require many auxiliary liquid discharge pipes. If all improved filter elements 6 are used, not only can the effect not be improved, but the improved filter element 6 is more complicated to produce than the ordinary filter element 6, thereby increasing the use cost of the enterprise).

[0028] Finally, the utility model also provides a sealing method for the contact part between the main pipe 2 and the central pipe 1:

[0029] 1. Use flange connection

[0030] 1. Prepare flanges: Install flanges at the contact points of the two pipes, ensuring that the size and material of the flanges match the pipes. The selection of flanges should take into account the operating pressure, temperature and properties of the medium.

[0031] 2. Install sealing gasket: Install suitable sealing gasket, such as metal spiral wound gasket or cork gasket, between the two flanges to enhance the sealing effect.

[0032] 3. Tighten the bolts: Use bolts to tighten the flange evenly, ensuring that all bolts are tightened consistently to avoid leaks.

[0033] 2. Use welding technology

[0034] 1. Prepare the welding surface: Make sure the contact surface of the two pipes is clean and free of oil, moisture or rust.

[0035] 2. Choose a suitable welding method: Choose a suitable welding method according to the pipe material, such as arc welding, TIG welding or MIG welding.

[0036] 3. Perform welding: The welding work shall be performed by qualified welders, paying attention to temperature control and weld formation during the welding process, and non-destructive testing of the weld shall be performed after completion.

[0037] The present invention includes but is not limited to the above two sealing methods. If other pipeline components differ from the present invention only in sealing methods, they are still within the protection scope of the present invention. Figure 3 It can be seen that a notch is provided near the center tube 1 and the partition plate for liquid inlet, and the filter cartridge is provided with a hole like a normal filter cartridge, which is not drawn in the accompanying drawings.

[0038] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A flow dividing pipe assembly for a filter, comprising a central pipe (1) located in a filter element (6), wherein the head of the central pipe (1) is interconnected with a main pipe (2), characterized in that: An auxiliary liquid outlet pipe (3) is arranged inside the central tube (1), and the top and bottom of the auxiliary liquid outlet pipe (3) extend out from the upper and lower openings of the central tube (1), and the bottom of the auxiliary liquid outlet pipe (3) can extend to the bottom of the filter tank body to absorb residual liquid at the bottom of the filter tank body and filter the liquid through the filter element (6). The top of the auxiliary liquid outlet pipe (3) passes through the main pipeline (2), and the contact parts of the two are sealed and connected. The top of the main pipeline (2) is provided with a secondary pipeline (5) interconnected with the auxiliary liquid outlet pipe (3).

2. A flow dividing pipe assembly for a filter according to claim 1, characterized in that: The secondary pipe (5) has a semicircular cross section and fits closely to the outer wall of the main pipe (2).

3. A flow dividing pipe assembly for a filter according to claim 1, characterized in that: The main pipeline (2) collects the normal filtrate flowing into the central pipe (1) through the outer collecting pipe (7) and then discharges it, and the secondary pipeline (5) collects the residual liquid flowing into the auxiliary liquid outlet pipe (3) through the inner collecting pipe (8) and then discharges it.

4. A flow dividing pipe assembly for a filter according to claim 3, characterized in that: A transfer pipe (9) is provided between the main pipe (2) and the external collecting pipe (7), and the branch pipe (4) located inside the filter tank body is connected to the external collecting pipe (7) via the transfer pipe (9). A connection port is left at the bottom of the branch pipe (4) for connecting to a common filter element.

5. A flow dividing pipe assembly for a filter according to claim 1, characterized in that: The contact portion between the main pipe (2) and the central pipe (1) is sealed and connected via a mounting flange.

6. A flow dividing pipe assembly for a filter according to claim 1, characterized in that: The contact parts of the main pipe (2) and the central pipe (1) are sealed and connected by welding.

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