A filter cartridge with no residual liquid

Abstract

The utility model discloses a kind of residual liquid-free filtering filter cartridge, it relates to filtering technical field, including: cylinder and filter core, filter core is vertically arranged in cylinder, cylinder bottom is equipped with solid discharge port and liquid inlet, air inlet pipeline, top is equipped with the liquid outlet pipeline and cleaning pipeline that all communicate with filter core, solid discharge port is equipped with solid discharge valve, the inner chamber top of cylinder is connected with first gas supply pipeline, and the inner chamber bottom of cylinder is connected with residual liquid residual liquid pressure return pipeline;Gas supplied in the utility model in the first gas supply pipeline can press residual liquid in cylinder into residual liquid pressure return pipeline, then open second gas supply pipeline, blow dry impurity in cylinder and on filter core, open solid discharge valve, utilize the compressed gas input in inner chamber top and blow off filter core solid impurity, discharge from solid discharge port, realize that filter cartridge is residual liquid-free, solid and liquid separation.

Description

Technical Field

[0001] This utility model relates to the field of filtration technology, and in particular to a residue-free filter cartridge. Background Technology

[0002] With the rapid development and application of advanced technologies, the requirements for fluids in both daily life and industrial production are becoming increasingly stringent, especially in the food industry. Currently, filters are frequently used as the main filtration equipment for food. The core component of a filter is the filter element. However, during use, the filter element will gradually become clogged by impurities and will no longer be able to work. If the filter element that cannot work is discarded and replaced with a new one, it will result in a large investment in consumables.

[0003] In the existing technology, backwashing regeneration is often used to solve the problem of filter element clogging. Specifically, gas or liquid is used as the cleaning fluid. The cleaning fluid enters from the outlet of the filter element and flows in the opposite direction to the filtrate, thereby flushing out the impurities clogging the filter element and discharging them from the drain port at the bottom of the filter. However, during the discharge process, the cleaning fluid is discharged along with the original liquid and impurities in the filter, resulting in the waste of the original liquid.

[0004] Therefore, there is an urgent need for a residue-free filter cartridge that saves raw liquid resources and has a good regeneration effect. Utility Model Content

[0005] The purpose of this invention is to provide a residue-free filter cartridge to solve the problems existing in the prior art. Before sewage discharge, the original liquid inside the cartridge is pumped out by the air supply of the first air supply pipeline, which reduces the waste of the original liquid during the sewage discharge process and improves the regeneration effect.

[0006] To achieve the above objectives, this utility model provides the following solution: This utility model provides a residue-free filter cartridge, including a cartridge body and a filter element. The filter element is vertically arranged inside the cartridge body. The bottom of the cartridge body is provided with a drain port and a liquid inlet pipe. The top of the cartridge body is provided with a liquid outlet pipe communicating with the filter element and a cleaning pipe communicating with the filter element. A drain valve is provided at the drain port. The top of the inner cavity of the cartridge body is connected to a first air supply pipe. The bottom of the inner cavity of the cartridge body is connected to a residual pressure return pipe. Valves are provided on the liquid inlet pipe, the liquid outlet pipe, the cleaning pipe, the first air supply pipe, and the residual pressure return pipe.

[0007] Preferably, the bottom of the inner cavity of the cylinder is connected to a second air supply pipe, and the top of the cylinder is provided with a third air supply pipe connected to the filter element and an exhaust pipe for exhausting air. Valves are provided on the second air supply pipe, the exhaust pipe and the third air supply pipe.

[0008] Preferably, the third gas supply line is equipped with a first regulating valve for adjusting the pressure.

[0009] Preferably, the inlet end of the second air supply pipeline and the inlet end of the first air supply pipeline are connected to a low-pressure pipeline, the low-pressure pipeline is connected to the outlet end of the compressor, and a second regulating valve for regulating pressure is provided on the low-pressure pipeline.

[0010] Preferably, the inlet end of the third gas supply pipeline and the inlet end of the low-pressure pipeline are connected to the main gas supply pipeline, and the main gas supply pipeline is connected to the outlet end of the compressed gas supply equipment.

[0011] Preferably, the bottom of the inner cavity of the cylinder is connected to a third air supply pipe, and the top of the cylinder is provided with a residual liquid discharge pipe. The inlet of the residual liquid discharge pipe is located at the bottom of the inner cavity of the filter element.

[0012] Preferably, the third gas supply line is the same as the second gas supply line.

[0013] Preferably, the liquid outlet pipeline, the cleaning pipeline, and the third air supply pipeline are all connected to the filter element through the liquid outlet of a combined pipeline of several filter elements.

[0014] Preferably, the residual hydraulic return line and the inlet line are connected to the bottom of the inner cavity of the cylinder through a connecting pipe.

[0015] The present invention achieves the following main technical effects compared to the prior art:

[0016] The gas supplied through the first gas supply line can pump the original liquid in the cylinder into the residual liquid return line. After all the original liquid in the cylinder has been pumped out, the cleaning line can be opened, and the cleaning fluid moves from the inside of the filter element to the outside, removing impurities and filter cake from the filter element. The cleaning agent carrying the impurities is discharged from the discharge port, realizing the regeneration of the filter element. Since there is no original liquid in the cylinder at this time, the waste of original liquid is greatly reduced, saving original liquid resources. At the same time, as the cleaning fluid moves from the inside to the outside, the outer side of the filter cake is not supported by the pressure of the original liquid, making it easier to remove the filter cake and improving the regeneration effect of the filter element.

[0017] The other solutions of this utility model achieve the following technical effects compared to the prior art:

[0018] The combination of the second air supply line and the exhaust line enables the flow of gas within the cylinder, achieving the blowing and solidification of the filter cake. At this time, the filter cake becomes less sticky due to the lack of moisture. The gas from the third air supply line is then blown from the inside of the filter element to the outside, blowing off the filter cake and impurities inside the filter element, thus improving the regeneration effect of the filter element. At the same time, the impurities discharged from the discharge port have a low liquid content, improving the ease of cleaning and subsequent processing.

[0019] The combination of the third air supply line and the residual liquid discharge line can discharge the residual liquid in the filter element, avoiding affecting the raw liquid to be filtered next time and improving the filtration effect of the raw liquid. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the residue-free filter cartridge in the embodiment of this utility model;

[0022] The components include: 1. cylinder; 2. exhaust pipe; 3. solid discharge valve; 4. liquid inlet pipe; 5. liquid outlet pipe; 6. cleaning pipe; 7. first air supply pipe; 8. residual liquid return pipe; 9. second air supply pipe; 10. third air supply pipe; and 11. residual liquid discharge pipe. Detailed Implementation

[0023] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] The purpose of this invention is to provide a residue-free filter cartridge to solve the problems existing in the prior art. Before sewage discharge, the original liquid inside the cartridge is pumped out by the air supply through the first air supply pipeline, which reduces the waste of the original liquid during the sewage discharge process and improves the regeneration effect.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Please refer to the following: Figure 1As shown, a residual liquid filter cartridge is provided, including a cylinder body 1 and filter elements. The filter elements are vertically installed inside the cylinder body 1 via a frame. To improve the filtration effect, multiple filter elements are provided. The filter elements can be membrane filter elements. The bottom of the cylinder body 1 has a drain port and a liquid inlet pipe 4, and the top has a liquid outlet pipe 5 and a cleaning pipe 6. Both the liquid outlet pipe 5 and the cleaning pipe 6 are connected to the inner cavity of the filter elements. A drain valve 3 is provided at the drain port. The top of the inner cavity of the cylinder body 1 is connected to a first air supply pipe 7, and the bottom of the inner cavity of the cylinder body 1 is connected to a residual liquid return pipe 8. The liquid inlet pipe 4, liquid outlet pipe 5, cleaning pipe 6, first air supply pipe 7, and residual liquid return pipe 8 are connected to the cylinder body 1. Each cylinder is equipped with a valve. Gas supplied through the first air supply line 7 can pump the original liquid in the cylinder 1 into the residual liquid return line 8. After all the original liquid in the cylinder 1 has been pumped out, the cleaning line 6 can be opened to move the liquid from the inside of the filter element to the outside, removing impurities and filter cake from the filter element. The cleaning liquid carrying the impurities is discharged from the discharge port, realizing the regeneration of the filter element. Since there is no original liquid in the cylinder 1 at this time, the waste of original liquid is greatly reduced, saving original liquid resources. At the same time, as the cleaning liquid moves from the inside to the outside, the outer side of the filter cake is not supported by the pressure of the original liquid, making it easier to remove the filter cake and improving the regeneration effect of the filter element.

[0027] The end of the residual pressure return line 8 can be connected to the raw liquid tank. The returned raw liquid is collected by the raw liquid tank for reuse in the next filtration. The raw liquid tank is the tank that provides raw liquid to the inlet line 4.

[0028] To improve the pressure return effect of the raw liquid, the inlet of the residual pressure return pipeline 8 should be located near the bottom of the inner cavity of the cylinder 1.

[0029] The bottom of the inner cavity of the cylinder 1 is connected to a second air supply pipe 9, and the top of the cylinder 1 is provided with a third air supply pipe 10 connected to the filter element and an exhaust pipe 2 for exhausting air. Valves are provided on the second air supply pipe 9, the exhaust pipe 2 and the third air supply pipe 10. The cooperation of the second air supply pipe 9 and the exhaust pipe 2 enables the flow of gas in the cylinder 1 to dry and solidify the filter cake. At this time, the filter cake has reduced viscosity due to lack of moisture. The gas from the third air supply pipe 10 blows air from the inside of the filter element to the outside, blowing off the filter cake and impurities in the filter element, improving the regeneration effect of the filter element. At the same time, the impurities discharged from the discharge port have a low liquid content, which improves the ease of cleaning and subsequent sewage treatment.

[0030] The inlet end of the second gas supply line 9 and the inlet end of the first gas supply line 7 are connected to a low-pressure line. The low-pressure line is connected to the outlet end of the compressed gas supply equipment. A first regulating valve for regulating pressure is installed on the high-pressure line, and a second regulating valve for regulating pressure is installed on the low-pressure line.

[0031] Based on the setting of the first pressure regulating valve and the second pressure regulating valve, the air inlet end of the third air supply line 10 and the air inlet end of the low pressure line are connected to the main air supply line, and the main air supply line is connected to the air outlet end of the compressed gas supply equipment.

[0032] The bottom of the inner cavity of the cylinder 1 is connected to a third air supply pipe, and the top of the cylinder 1 is provided with a residual liquid outlet pipe 11. The inlet of the residual liquid outlet pipe 11 is located at the bottom of the inner cavity of the filter element. The cooperation between the third air supply pipe and the residual liquid outlet pipe 11 can export the residual liquid in the filter element, avoid affecting the raw liquid to be filtered next time, and improve the filtration effect of the raw liquid.

[0033] The third gas supply line is the same as the second gas supply line 9, which saves on the number of pipelines and holes to be drilled at the bottom of the cylinder 1, thus saving costs.

[0034] The outlet ends of multiple filter elements are connected to a main pipe, which collects the filtrate from multiple filter elements and discharges it. The outlet pipe 5, cleaning pipe 6, and third air supply pipe 10 of the cylinder 1 are all connected to the filter elements through the outlet of the main pipe of several filter elements. Specifically, the outlet pipe 5, cleaning pipe 6, third air supply pipe 10, and main pipe are connected by a four-way connector.

[0035] To reduce the need for drilling at the bottom of the cylinder 1, the residual hydraulic return line 8 and the inlet line 4 are connected to the bottom of the inner cavity of the cylinder 1 through a connecting pipe.

[0036] In this embodiment, the valves on the inlet pipe 4, outlet pipe 5, cleaning pipe 6, first air supply pipe 7, residual hydraulic return pipe 8, second air supply pipe 9, and exhaust pipe 2 of the cylinder 1, as well as the first regulating valve and the second regulating valve, can all be electric or pneumatic control valves. Each valve is electrically connected to the control system, and the control system controls each valve to improve the automation level of the system.

[0037] The filter regeneration method includes the following steps:

[0038] S1: The control system stops the liquid inlet of the liquid inlet pipe 4, opens the residual pressure return pipe 8 and the first gas supply pipe 7, and the gas enters the cylinder 1 and occupies the space inside the cylinder 1. The original liquid in the cylinder 1 is forced out from the residual pressure return pipe 8. The pressed-out original liquid is collected and waits for the next filtration.

[0039] S2: After the original hydraulic pressure is discharged, the control system closes the residual hydraulic pressure return line 8 and the first air supply line 7, and opens the second air supply line 9 and the exhaust line 2. When the gas moves from bottom to top, it passes the location of the filter element and blows the filter cake solid by airflow.

[0040] S3: After the filter cake is solidified, the control system closes the second air supply line 9 and the exhaust line 2, and opens the third air supply line 10 and the solidification discharge valve 3. The gas is blown from inside the filter element into the cylinder 1 in the opposite direction to the flow of the filtrate, thus achieving backflushing. During the backflushing process, the filter cake and impurities inside the filter element are blown off and discharged from the solidification discharge port.

[0041] S4: After the filter cake is discharged, the control system closes the third air supply line 10 and opens the cleaning line 6. The cleaning liquid flows from the filter element into the cylinder 1 in the opposite direction to the flow of the filtrate, thus achieving backwashing and cleaning the residual impurities in the filter membrane of the filter element.

[0042] S5: After cleaning is completed, the control system closes the solid discharge valve 3 and the cleaning pipeline 6, and opens the third air supply pipeline and the residual liquid discharge pipeline 11. Gas enters the filter element cavity from the cylinder 1. As the gas in the filter element cavity increases, the residual liquid in the filter element is forced out, thus realizing the discharge of the residual liquid in the filter element.

[0043] Any adaptive changes made according to actual needs are within the protection scope of this utility model.

[0044] It should be noted that, for those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this utility model is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] This utility model uses specific examples to illustrate its principles and implementation methods. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A residue-free filter cartridge, characterized in that, The device includes a cylinder and a filter element. The filter element is vertically arranged inside the cylinder. The bottom of the cylinder has a drain port and a liquid inlet pipe. The top of the cylinder has a liquid outlet pipe and a cleaning pipe connected to the filter element. A drain valve is provided at the drain port. The top of the inner cavity of the cylinder is connected to a first air supply pipe. The bottom of the inner cavity of the cylinder is connected to a residual hydraulic pressure return pipe. Valves are provided on the liquid inlet pipe, the liquid outlet pipe, the cleaning pipe, the first air supply pipe, and the residual hydraulic pressure return pipe.

2. The residue-free filter cartridge according to claim 1, characterized in that, The bottom of the inner cavity of the cylinder is connected to a second air supply pipe, and the top of the cylinder is provided with a third air supply pipe connected to the filter element and an exhaust pipe for exhausting air. Valves are provided on the second air supply pipe, the exhaust pipe and the third air supply pipe.

3. The residue-free filter cartridge according to claim 2, characterized in that, The third gas supply pipeline is equipped with a first regulating valve for adjusting the pressure.

4. The residue-free filter cartridge according to claim 2, characterized in that, The inlet end of the second air supply line and the inlet end of the first air supply line are connected to a low-pressure line, which is connected to the outlet end of the compressor. A second regulating valve for adjusting pressure is provided on the low-pressure line.

5. The residue-free filter cartridge according to claim 4, characterized in that, The inlet end of the third gas supply pipeline and the inlet end of the low-pressure pipeline are connected to the main gas supply pipeline, and the main gas supply pipeline is connected to the outlet end of the compressed gas supply equipment.

6. The residue-free filter cartridge according to claim 2, characterized in that, The bottom of the inner cavity of the cylinder is connected to a third air supply pipe, and the top of the cylinder is provided with a residual liquid outlet pipe, the inlet of which is located at the bottom of the inner cavity of the filter element.

7. The residue-free filter cartridge according to claim 6, characterized in that, The third gas supply line is the same as the second gas supply line.

8. The residue-free filter cartridge according to claim 2, characterized in that, The liquid outlet pipeline, the cleaning pipeline, and the third air supply pipeline are all connected to the filter element through the liquid outlet of a combined pipeline of several filter elements.

9. The residue-free filter cartridge according to claim 1, characterized in that, The residual hydraulic return line and the inlet line are connected to the bottom of the inner cavity of the cylinder through a connecting pipe.

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