Self-cleaning type filtering system capable of continuously filtering

Abstract

The utility model discloses a self-cleaning type filtering system capable of continuously filtering, and relates to the technical field of filtering systems. The at least two filters are arranged, and each filter is communicated with the filtering medium source and the cleaning medium source, so that when one filter is cleaned, other filters can be adopted for filtering, and the continuity of the filtering process is ensured. Meanwhile, the system can directly achieve online cleaning through the cleaning unit, the filter can also be detached to be manually cleaned, and due to the fact that the filter screen is fixedly connected with the sealing cover, the filter screen can be taken out more rapidly and conveniently. In addition, a cleaning medium source of the system can be gas or water or other substances, and only the filter screen can be cleaned.

Description

Technical Field

[0001] This utility model relates to the field of filtration system technology, and more specifically, to a continuous filtration self-cleaning filtration system. Background Technology

[0002] Existing pipeline filters mainly include T-type, Y-type, basket-type, and cartridge-type pipeline filters. Different types of pipeline filters can be selected for installation based on the characteristics of the filtered media, the required filtration precision, and installation conditions. T-type or Y-type pipeline filters are generally chosen for coarse filtration, while basket-type or cartridge-type pipeline filters are generally chosen for fine filtration to increase the filtration area. However, regardless of the type of pipeline filter, current practices all suffer from long cleaning and disassembly times during use, and the need to interrupt the filtration process, resulting in discontinuous filtration. Furthermore, all of these pipeline filters have complex structures, requiring the disassembly of numerous components during cleaning, increasing disassembly difficulty and reducing cleaning efficiency.

[0003] In view of this, this utility model is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a self-cleaning filtration system for continuous filtration.

[0005] This utility model is implemented as follows:

[0006] In a first aspect, this utility model provides a continuous filtration self-cleaning filtration system, including at least two filters, each filter including a filter housing, a filter screen and a sealing cover, the filter screen being fixedly connected to the sealing cover, the sealing cover being detachably sealed to the filter housing, and the filter screen being housed inside the filter housing.

[0007] The filter has a filter media inlet and a filter media outlet, which are respectively connected to the inner and outer sides of the filter screen. The filter housing is also equipped with a drain port.

[0008] The filter media unit includes a filter media source, which is connected to the filter media inlet of each filter via pipelines, and each connection is equipped with a filter inlet valve.

[0009] The cleaning unit includes a cleaning media source and a cleaning media inlet on the filter. The cleaning media inlet and the drain outlet are respectively connected to the inner and outer sides of the filter screen. The cleaning media source is connected to the cleaning media inlet of the filter through a pipe.

[0010] In an optional embodiment, each filter is provided with a first pressure gauge and a second pressure gauge, with the first pressure gauge mounted on the filter housing and the second pressure gauge mounted on the sealing cover.

[0011] In an optional embodiment, the filter media inlet and drain outlet are both located on the filter housing, while the filter media outlet and cleaning media inlet are both located on the sealing cover.

[0012] In an optional embodiment, a filter outlet valve is provided on the pipe connected to the filter medium outlet, a clean inlet valve is provided on the pipe connected to the clean medium inlet, and a drain valve is provided on the pipe connected to the drain outlet.

[0013] In an optional embodiment, a filter media valve is provided on the pipe connected to the filter media source, and a cleaning media valve is provided on the pipe connected to the cleaning media source.

[0014] In an optional embodiment, the device further includes a filtrate storage device and a filter residue storage device. The filtrate storage device is connected to the filter medium outlet via a pipeline, and a filtrate control valve is installed on the connecting pipeline. The filter residue storage device is connected to the drain outlet via a pipeline, and a filter residue control valve is installed on the connecting pipeline.

[0015] In an optional embodiment, the sealing cover is provided with an operating element for opening or closing the sealing cover.

[0016] In an optional embodiment, the sealing cap and the filter housing are sealed together by connecting bolts and seals.

[0017] In an optional implementation, each filter is provided with an exhaust valve.

[0018] In an optional implementation, the filter is installed horizontally and / or vertically.

[0019] This utility model has the following beneficial effects:

[0020] This invention provides a continuous self-cleaning filtration system. By setting at least two filters, each connected to both a filter media source and a cleaning media source, the system allows for continuous filtration while one filter is being cleaned, ensuring the other filters can be used simultaneously. The system can also perform online cleaning via a cleaning unit, or the filters can be removed for manual cleaning. Since the filter screen is fixedly connected to the sealing cap, its removal is quick and convenient. Furthermore, the cleaning media source can be any substance, such as gas or water, as long as it enables the cleaning of the filter screen. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of a self-cleaning continuous filtration system provided in the first embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a self-cleaning continuous filtration system provided in the second embodiment of the present invention.

[0024] Key component symbols: 100 - Continuous self-cleaning filtration system; 110 - Filter; 111 - Filter housing; 112 - Filter screen; 113 - Sealing cover; 1131 - Operating element; 121 - Filter media source; 131 - Filter inlet valve; 132 - Filter outlet valve; 133 - Cleaning inlet valve; 134 - Drain valve; 135 - Filter media valve; 136 - Cleaning media valve; 137 - Filtrate control valve; 138 - Filter cake control valve; 139 - Vent valve; 141 - Cleaning media source; 151 - First pressure gauge; 152 - Second pressure gauge; 160 - Filtrate storage device; 170 - Filter cake storage device; 180 - Connecting bolt; 190 - Seal. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0026] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0027] First Embodiment

[0028] Please refer to Figure 1 This embodiment provides a continuous filtration self-cleaning filtration system 100, including two filters 110. In other embodiments, the number of filters 110 can be greater than two, for example, three, four, or five. For cost-saving considerations, the number of filters 110 is preferably two.

[0029] It should be noted that Figure 1The suffixes 'a' and 'b' in the label are only used to distinguish and refer to the two filters 110. However, the two filters 110 have the same structure, so no suffix distinction is made in the structural description. In the principle description, in order to clearly describe the working process of the continuous filtration self-cleaning filtration system 100, 'a' and 'b' are used to distinguish the two filters 110. Figure 1 The filter 110 on the left is filter 110b, and the filter 110 on the right is filter 110a.

[0030] Each filter 110 includes a filter housing 111, a filter screen 112, and a sealing cap 113. The filter screen 112 is fixedly connected to the sealing cap 113, and the sealing cap 113 is detachably and sealingly connected to the filter housing 111. The filter screen 112 is housed within the filter housing 111.

[0031] In this embodiment, the filter screen 112 and the sealing cover 113 are fixedly connected by welding. In other embodiments, the filter screen 112 and the sealing cover 113 can also be manufactured as an integral structure. By fixing the filter screen 112 and the sealing cover 113 together, the disassembly and assembly process of the filter screen 112 is simplified. The sealing cover 113 can be directly separated from the filter housing 111, and then the filter screen 112 can be removed simultaneously by removing the sealing cover 113, thus achieving quick removal of the filter screen 112 and reducing the disassembly difficulty for cleaning the filter screen 112.

[0032] The filter 110 has a filter medium inlet and a filter medium outlet, and the filter medium inlet and the filter medium outlet are respectively connected to the inner and outer sides of the filter screen 112, so that the medium to be filtered can enter through the filter medium inlet, pass through the filter screen 112, and flow out from the filter medium outlet on the other side of the filter screen 112 to complete the filtration.

[0033] The filter housing 111 is also provided with a drain port to discharge impurities from the filter 110 in a timely manner.

[0034] The filter media unit includes a filter media source 121, in which the medium to be filtered is stored or temporarily stored. The filter media source 121 can be a filter media storage tank or a pipeline for flowing the medium to be filtered.

[0035] The filter media source 121 is connected to the filter media inlet of each filter 110 via pipelines, so that the medium to be filtered can enter the filter 110 for filtration. Each connection is equipped with a filter inlet valve 131, which controls the entry of the medium to be filtered into the filter 110. Therefore, the working state of different filters 110 can be controlled by controlling the filter inlet valve 131. For example, opening the filter inlet valve 131 corresponding to a certain filter 110 will start the filtration of that filter 110; when the filter inlet valve 131 corresponding to that filter 110 is closed, the filter 110 can be cleaned or otherwise operated, ensuring the accuracy of system operation.

[0036] The cleaning unit includes a cleaning medium source 141, which is used to store or temporarily store the cleaning medium, such as a cleaning medium storage tank or a pipeline through which the cleaning medium flows.

[0037] The cleaning medium can be a gas or a liquid, such as nitrogen, steam, air, water, or filtrate obtained from filter 110, depending on production needs.

[0038] The filter 110 is also provided with a cleaning medium inlet, allowing the cleaning medium to enter the filter 110 and enabling online cleaning of the filter 110 without disassembly, which improves the cleaning efficiency of the filter 110 and reduces the cleaning difficulty. The cleaning medium inlet and the drain outlet are respectively connected to the inner and outer sides of the filter screen 112. The cleaning medium source 141 is connected to the cleaning medium inlet of the filter 110 through a pipe, so that impurities after online cleaning can be discharged from the drain outlet.

[0039] In this embodiment, each filter 110 is equipped with a first pressure gauge 151 and a second pressure gauge 152. The first pressure gauge 151 is installed on the filter housing, and the second pressure gauge 152 is installed on the sealing cover. By observing the pressure difference between the first pressure gauge 151 and the second pressure gauge 152, the clogging status of the filter screen 112 inside the filter 110 is confirmed. If the pressure difference value is high, it indicates that the filter screen 112 is severely clogged and needs to be cleaned.

[0040] In this embodiment, the filter medium inlet and the drain outlet are both located on the outer shell of the filter 110, and the filter medium outlet and the cleaning medium inlet are both located on the sealing cover 113, so as to achieve the effect of the medium to be filtered passing through the filter screen 112 for filtration, and the effect of the cleaning medium passing through the filter screen 112 for cleaning and discharging impurities from the drain outlet.

[0041] In other embodiments, the filter media inlet and drain outlet may be located on the sealing cover 113, and the filter media outlet and cleaning media inlet may be located on the filter housing 110.

[0042] In this embodiment, a filter outlet valve 132 is provided on the pipe connected to the filter medium outlet to control the process of the filtrate obtained after filtration being discharged from the filter 110. During filtration, the filter outlet valve 132 is normally open to ensure the flow of the medium to be filtered in the filter 110. When the filter 110 needs to be cleaned, the filter outlet valve 132 is closed to prevent the cleaning medium from flowing out directly and failing to achieve the cleaning effect.

[0043] In this embodiment, a cleaning inlet valve 133 is provided on the pipe connected to the cleaning medium inlet to control the entry of the cleaning medium into the filter 110 and realize online cleaning.

[0044] In this embodiment, a drain valve 134 is installed on the pipe connected to the drain outlet to control the flow of impurities out of the filter 110. Since both the drain outlet and the filter media inlet are located on the filter housing 111 in this embodiment, the draining process can be carried out in real time to ensure continuous filtration production.

[0045] In this embodiment, a filter media valve 135 is provided on the pipe connected to the filter media source 121 to control the flow of the medium to be filtered from the filter media source 121 and control the filtration process.

[0046] In this embodiment, a cleaning medium valve 136 is provided on the pipe connected to the cleaning medium source 141 to control the cleaning medium to flow out of the cleaning medium source 141 and control the cleaning process.

[0047] In this embodiment, a filtrate storage device 160 and a filter residue storage device 170 are also included. The filtrate storage device 160 is connected to the filter medium outlet through a pipeline, and a filtrate control valve 137 is also provided on the pipeline to control the flow direction of the filtrate. The filter residue storage device 170 is connected to the drain outlet through a pipeline, and a filter residue control valve 138 is also provided on the pipeline to control the collection of filter residue.

[0048] In this embodiment, the sealing cover 113 is provided with an operating member 1131 for operating the sealing cover 113 to open or close. The operating member 1131 protrudes from the surface of the sealing cover 113, making it easy for the operator to twist or press to remove the sealing cover 113 from the filter housing 111.

[0049] In this embodiment, the sealing cap 113 and the filter housing 111 are sealed together by connecting bolts 180 and a seal 190. In other embodiments, the sealing cap 113 and the filter housing 111 may also be sealed and detachably connected by other connection structures.

[0050] In this embodiment, to ensure the stability of the filtration process of the filter 110, each filter 110 is equipped with an exhaust valve 139. For example, after the filter 110 is cleaned and before it is put into production, the gas inside the filter 110 can be discharged through the exhaust valve 139 to ensure the normal operation of the system.

[0051] In this embodiment, a frame can be installed inside the filter screen 112 to support the filter screen, improve its strength, and prevent the filter screen from deforming due to initial filtration impact and large filtration pressure difference, thus affecting the filtration effect.

[0052] The working principle of the continuous filtration self-cleaning filtration system 100 provided in this embodiment of the utility model is as follows:

[0053] 1) Filtering status: First use Figure 1 The filter 110a on the right is used for filtration. Open the filter medium valve 135, filter inlet valve 131a, filter outlet valve 132a, exhaust valve 139a, and filtrate control valve 137. Close the other valves. When the gas in filter 110a is exhausted, close the exhaust valve 139a. The medium to be filtered enters filter 110a along the pipeline, passes through filter screen 112, and is discharged along the pipeline into filtrate storage device 160. If first using... Figure 1 The filter 110b shown on the left can be replaced by replacing the filter inlet valve 131a with the filter inlet valve 131b and the filter outlet valve 132a with the filter outlet valve 132b. However, in this embodiment, filter 110a is used first.

[0054] 2) Real-time intermittent sewage discharge state: After filtering for a period of time, some impurities are stored in the filter 110a. Under the above filtration state, the sewage discharge valve 134a and the filter cake control valve 138 can be opened to discharge the impurities, and then the sewage discharge valve 134a and the filter cake control valve 138 can be closed.

[0055] 3) Filter 110 Switching Status: When the pressure difference between the first pressure gauge 151 and the second pressure gauge 152 of filter 110a is high, it indicates that the filter screen 112 inside filter 110a needs to be cleaned. At this time, filter 110a can be switched to filter 110b for continuous filtration. The switching process is as follows: Open the filter inlet valve 131b, filter outlet valve 132b, and exhaust valve 139b. After the gas in filter 110b is completely discharged, close the exhaust valve 139b, close the filter inlet valve 131a and the filter outlet valve 132a, and the medium to be filtered can be transferred to filter 110b for filtration.

[0056] 4) Filter 110 online cleaning status: Keep filter 110 in the switching state, and open filter cake control valve 138, drain valve 134a, cleaning inlet valve 133a and cleaning medium valve 136 in sequence. The cleaning medium enters the filter 110a from the cleaning medium source 141 to clean the filter 110a. After cleaning, close the cleaning medium valve 136, cleaning inlet valve 133a, drain valve 134a and filter cake control valve 138 in sequence. The online cleaning of filter 110a is completed and ready for use.

[0057] 5) Manual cleaning of filter 110: Keep filter 110a in a non-operating state. Confirm that the filter inlet valve 131a, filter outlet valve 132a, and cleaning inlet valve 133a are closed. Open the drain valve 134a, filter cake control valve 138, and exhaust valve 139a to drain the filter media, filter cake, and other materials from filter 110. Disconnect the connecting bolts 180 of filter 110a. Operate the operating component 1131 to pull out the sealing cover 113. Simultaneously pull out the filter screen 112. After cleaning the filter screen 112, reinstall it. Open the exhaust valve 139a and slightly open the filter inlet valve 131a. When the gas in filter 110a is completely discharged, close the exhaust valve 139a and the inlet valve 131a. Filter 110a is now ready for cleaning and standby.

[0058] 6) When it is necessary to clean filter 110b, filter 110b can be cleaned according to the methods in 3) to 5). The suffix 'a' of the valve corresponding to filter 110a can be changed to the suffix 'b' of the same number.

[0059] It should be noted that the above operating principle is based on the principle that one filter 110 is used as the main filtration device and the other filter 110 is used as a backup filtration device. In other embodiments, filters 110a and 110b can be used simultaneously. After the readings of the first pressure gauge 151 and the second pressure gauge 152 reach a certain value, the filter 110 with the higher pressure difference is turned off and the filter 110 is cleaned.

[0060] The self-cleaning continuous filtration system 100 provided in this embodiment enables continuous filtration, and operations such as sewage discharge, online cleaning, and disassembly for cleaning do not affect the continuity of production. Multiple cleaning methods are available, including online cleaning without opening the cover, or manual cleaning by opening the sealing cover 113 and quickly removing the filter screen 112. Different specifications of the filter screen 112 can be selected according to filtration needs. This system is suitable for working environments where the medium to be filtered contains many impurities that are prone to clogging, or where the medium has high viscosity.

[0061] Second Embodiment

[0062] Please refer to Figure 2This embodiment provides a continuous filtration self-cleaning filtration system 100, which has a similar structure to the first embodiment, except that the filter 110 in this embodiment is installed vertically.

[0063] This utility model provides a continuous filtration self-cleaning filtration system 100, which does not limit the installation position of the filter 110, making the application range of the continuous filtration self-cleaning filtration system 100 wider. The installation direction of the filter 110 can be determined according to the current installation requirements, and the installation operation is flexible.

[0064] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A continuous filtration self-cleaning filtration system, characterized in that, The system includes at least two filters, each filter comprising a filter housing, a filter screen, and a sealing cap, wherein the filter screen is fixedly connected to the sealing cap, the sealing cap is detachably and sealingly connected to the filter housing, and the filter screen is housed within the filter housing; The filter has a filter medium inlet and a filter medium outlet, and the filter medium inlet and the filter medium outlet are respectively connected to the inner and outer sides of the filter screen. The filter housing is also provided with a drain outlet. A filter media unit, the filter media unit including a filter media source, the filter media source being connected to the filter media inlet of each filter via a pipeline, and each connection is provided with a filter inlet valve; The cleaning unit includes a cleaning medium source, and the filter is also provided with a cleaning medium inlet. The cleaning medium inlet and the drain outlet are respectively connected to the inner and outer sides of the filter screen. The cleaning medium source is connected to the cleaning medium inlet of the filter through a pipe.

2. The system according to claim 1, characterized in that, Each of the filters is equipped with a first pressure gauge and a second pressure gauge, the first pressure gauge being mounted on the filter housing and the second pressure gauge being mounted on the sealing cover.

3. The system according to claim 1, characterized in that, The filter media inlet and the drain outlet are both located on the filter housing, and the filter media outlet and the cleaning media inlet are both located on the sealing cover.

4. The system according to claim 1, characterized in that, A filter outlet valve is installed on the pipe connected to the filter medium outlet, a clean inlet valve is installed on the pipe connected to the clean medium inlet, and a drain valve is installed on the pipe connected to the drain outlet.

5. The system according to claim 1, characterized in that, A filter media valve is installed on the pipe connected to the filter media source, and a cleaning media valve is installed on the pipe connected to the cleaning media source.

6. The system according to claim 1, characterized in that, It also includes a filtrate storage device and a filter residue storage device. The filtrate storage device is connected to the filter medium outlet through a pipeline, and a filtrate control valve is installed on the connecting pipeline. The filter residue storage device is connected to the sewage outlet through a pipeline, and a filter residue control valve is installed on the connecting pipeline.

7. The system according to claim 1, characterized in that, The sealing cover is provided with operating components for opening or closing the sealing cover.

8. The system according to claim 1, characterized in that, The sealing cap and the filter housing are sealed together by connecting bolts and sealing elements.

9. The system according to claim 1, characterized in that, Each of the filters is equipped with an exhaust valve.

10. The system according to claim 1, characterized in that, The filter can be installed horizontally and / or vertically.

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