A ceramic membrane purification system for fly ash water washing liquid purification treatment

Abstract

The application relates to the technical field of water treatment systems, in particular to a ceramic membrane purification system for fly ash water washing liquid purification treatment, which comprises a base and a purification assembly, the purification assembly comprises a lower shell assembly, a middle shell assembly and an upper shell assembly; the upper shell assembly comprises a first air cylinder, a sealing cover, a connecting rod, a mounting part and a plurality of ceramic membranes; fly ash water washing liquid is added into the middle shell assembly through a water inlet, suspended matters in the water washing liquid are filtered by the ceramic membranes, and the filtered water washing liquid flows into the lower shell assembly and is discharged; when the ceramic membranes need to be replaced, the first air cylinder is controlled to drive the sealing cover to move upwards, the sealing cover drives the mounting part and the ceramic membranes to move upwards through the connecting rod, until the ceramic membranes leave the middle shell assembly, then the ceramic membranes can be replaced by workers outside; in this way, the ceramic membranes can be conveniently replaced, the operation is simplified, and the ceramic membrane purification system has the advantages of a short maintenance period.

Description

Technical Field

[0001] This invention relates to the field of water treatment system technology, and in particular to a ceramic membrane purification system for the purification treatment of fly ash washing liquid. Background Technology

[0002] Fly ash washing is an important way to realize the resource utilization of fly ash from waste incineration. After washing, the washing liquid needs to undergo pretreatment processes such as heavy metal removal, calcium and magnesium removal, and acid-base neutralization. The resulting saline wastewater then enters the evaporation and crystallization system to recover industrial salt. However, due to the complex composition of fly ash, the washing liquid contains not only a large amount of soluble chloride salts but also residual calcium, magnesium, heavy metal ions, and fine filter residues that have not been completely separated. During the evaporation and concentration process, the residual calcium and magnesium ions combine with sulfate and carbonate ions, easily precipitating on the surfaces of heat exchangers and evaporators to form inorganic scale such as calcium sulfate and calcium carbonate. This type of scale has extremely low thermal conductivity, leading to a sharp drop in heat transfer coefficient, severely reducing the heat exchange efficiency of the evaporation system, and causing problems such as pipe blockage and system instability. Therefore, effectively removing suspended solids and residual scale-forming ions from the washing liquid is a key step in ensuring the long-term stable operation of the evaporation system.

[0003] Currently, ceramic membrane filtration technology, due to its advantages such as good chemical stability, high mechanical strength, corrosion resistance, and high filtration accuracy, has been gradually applied to the purification and pretreatment of fly ash washing liquid. By installing a ceramic membrane filtration device upstream of the evaporation system, residual dioxin-containing microparticles and other suspended solids in the washing liquid can be effectively intercepted, reducing scaling and clogging of the evaporator caused by suspended solids. Ceramic membranes typically employ cross-flow filtration, resulting in lower membrane surface fouling and adaptability to the complex water quality conditions of fly ash washing liquid, which is highly alkaline and contains heavy metals. The washing liquid purified by ceramic membranes exhibits significantly reduced turbidity and suspended solids content, providing effective quality assurance for subsequent evaporation and desalination systems.

[0004] However, existing ceramic membrane purification equipment still has significant design shortcomings. In traditional ceramic membrane filtration equipment, the ceramic membrane module is usually fixedly installed inside the equipment housing, resulting in a relatively closed overall structure. When the ceramic membrane becomes clogged due to long-term operation or reaches the end of its service life and needs to be replaced, operators often need to perform extensive disassembly work, sometimes even dismantling the entire machine to remove the membrane module. This process is cumbersome and has a long maintenance cycle. Summary of the Invention

[0005] The purpose of this invention is to provide a ceramic membrane purification system for the purification treatment of fly ash washing liquid, which facilitates the replacement of ceramic membranes, simplifies operation, and has the advantage of short maintenance cycle.

[0006] To achieve the above objectives, the present invention provides a ceramic membrane purification system for the purification treatment of fly ash washing liquid, comprising a base and a purification assembly, wherein the purification assembly comprises a lower shell assembly, a middle shell assembly and an upper shell assembly. The lower shell assembly is disposed on the top of the base, and the middle shell assembly is disposed on the top of the lower shell assembly; the upper shell assembly includes a first cylinder, a sealing cover, a connecting rod, a mounting component, and multiple ceramic membranes; the first cylinder is fixedly connected to the top of the base; the sealing cover is fixedly connected to the output rod of the first cylinder and is located on the top of the first cylinder, and the top of the sealing cover is provided with a water inlet; the connecting rod is fixedly connected to the sealing cover and is located at the bottom of the sealing cover; the mounting component is disposed at the bottom of the connecting rod; and multiple ceramic membranes are respectively disposed on the mounting component.

[0007] The mounting component includes a mounting base and multiple fixing parts; the mounting base is fixedly connected to the bottom of the connecting rod, and the surface of the mounting base is provided with multiple slots; the multiple fixing parts are respectively located on the side of the mounting base, and each fixing part includes two support seats, studs and baffles; the two support seats are respectively fixedly connected to the mounting base and located on both sides of the mounting base; the studs are threadedly connected to the mounting base and located inside the mounting base; the baffles are fixedly connected to the studs and located on the side of the studs.

[0008] The upper shell assembly further includes a first guide rod and a first slider; the first guide rod is fixedly connected to the top of the base; the first slider and the first guide rod are slidably connected and fixedly connected to the sealing cover, and are located between the first guide rod and the sealing cover.

[0009] The lower shell assembly includes a support column, a lower shell, and a water outlet pipe; the support column is fixedly connected to the top of the base; the lower shell is fixedly connected to the top of the support column, and a dosing port is provided on the side of the lower shell; the water outlet pipe communicates with the lower shell and is located on the side of the lower shell.

[0010] The lower shell assembly further includes a motor, a rotating shaft, and a stirring rod; the motor is fixedly connected to the lower shell and located at the bottom of the lower shell; the rotating shaft is fixedly connected to the output end of the motor and located at the top of the motor; the stirring rod is fixedly connected to the rotating shaft and located on the side of the rotating shaft.

[0011] The middle shell assembly includes a middle shell, a second cylinder, and a drain pipe; the middle shell is located at the top of the lower shell; the second cylinder is fixedly connected to the base, and the output rod of the second cylinder is fixedly connected to the middle shell and located at the top of the base; the drain pipe communicates with the middle shell and is located on the side of the middle shell.

[0012] The middle shell assembly further includes a second guide rod and a second slider; the second guide rod is fixedly connected to the top of the base; the second slider and the second guide rod are slidably connected and fixedly connected to the middle shell, and are located between the second guide rod and the middle shell.

[0013] This invention discloses a ceramic membrane purification system for purifying fly ash washing liquid. The fly ash washing liquid is introduced into the middle shell assembly through the inlet. The ceramic membrane filters the suspended solids in the washing liquid, and the filtered washing liquid flows into the lower shell assembly and is discharged. When the ceramic membrane needs to be replaced, the first cylinder is controlled to drive the sealing cover upward. The sealing cover, via the connecting rod, drives the mounting component and the ceramic membrane upward until the ceramic membrane leaves the middle shell assembly. Subsequently, the ceramic membrane can be replaced externally. This method facilitates ceramic membrane replacement, simplifies operation, and has the advantage of a short maintenance cycle. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention.

[0016] Figure 2 This is a structural schematic diagram of the first embodiment of the present invention from another perspective.

[0017] Figure 3 This is a front cross-sectional view of the entire first embodiment of the present invention.

[0018] Figure 4 This is a side sectional view of the entire first embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the connecting rod, mounting components, and ceramic membrane according to the first embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0021] Figure 7 This is a front cross-sectional view of the entire second embodiment of the present invention.

[0022] 101-Base, 102-Lower shell assembly, 103-Middle shell assembly, 104-Upper shell assembly, 105-First cylinder, 106-Sealing cover, 107-Connecting rod, 108-Mounting component, 109-Ceramic membrane, 110-Mounting base, 111-Fixing part, 112-Slot, 113-Support base, 114-Stud, 115-Baffle, 116-First guide rod, 117-First slider, 11 8-Support column, 119-Lower housing, 120-Water outlet pipe, 121-Motor, 122-Rotating shaft, 123-Stirring rod, 124-Middle housing, 125-Second cylinder, 126-Drain pipe, 127-Second guide rod, 128-Second slider, 129-Dosing port, 130-Water inlet, 201-Flushing assembly, 202-Water pump, 203-Connecting pipe, 204-Diverter pipe, 205-Nozzle. Detailed Implementation

[0023] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] The first embodiment of this application is as follows: Please see Figures 1-5 ,in, Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the present invention; Figure 2 This is a structural schematic diagram of the entire first embodiment of the present invention from another perspective; Figure 3 This is a front sectional view of the entire first embodiment of the present invention; Figure 4 This is a side sectional view of the entire first embodiment of the present invention; Figure 5 This is a schematic diagram of the connecting rod, mounting components, and ceramic membrane according to the first embodiment of the present invention.

[0025] This invention provides a ceramic membrane purification system for purifying fly ash washing liquid, comprising a base 101 and purification components. The purification components include a lower shell assembly 102, a middle shell assembly 103, and an upper shell assembly 104. The upper shell assembly 104 includes a first cylinder 105, a sealing cover 106, a connecting rod 107, a mounting component 108, multiple ceramic membranes 109, a first guide rod 116, and a first slider 117. The mounting component 108 includes a mounting base 110 and multiple fixing parts 111. The fixing part 111 includes two support seats 113, studs 114 and baffles 115; the lower shell assembly 102 includes a support column 118, a lower shell 119, a water outlet pipe 120, a motor 121, a rotating shaft 122 and a stirring rod 123; the middle shell assembly 103 includes a middle shell 124, a second cylinder 125, a drain pipe 126, a second guide rod 127 and a second slider 128; the aforementioned solution facilitates the replacement of the ceramic membrane 109, simplifies operation, and has the advantage of a short maintenance cycle.

[0026] In this specific embodiment, the lower shell assembly 102 is disposed on the top of the base 101, and the middle shell assembly 103 is disposed on the top of the lower shell assembly 102; the upper shell assembly 104 includes a first cylinder 105, a sealing cover 106, a connecting rod 107, a mounting component 108, and a plurality of ceramic membranes 109; the first cylinder 105 is fixedly connected to the top of the base 101; the sealing cover 106 is fixedly connected to the output rod of the first cylinder 105 and is located on the top of the first cylinder 105, and the top of the sealing cover 106 is provided with a water inlet 130; the connecting rod 107 is fixedly connected to the sealing cover 106 and is located at the bottom of the sealing cover 106; the mounting component 108 is disposed at the bottom of the connecting rod 107; and the plurality of ceramic membranes 109 are respectively disposed on the mounting component 108. The ceramic membrane 109 is a flat ceramic membrane. The fly ash washing liquid is added to the middle shell assembly 103 through the inlet 130. The ceramic membrane 109 filters the suspended solids in the washing liquid, and the filtered washing liquid flows to the lower shell assembly 102 and is discharged. When the ceramic membrane 109 needs to be replaced, the first cylinder 105 is controlled to drive the sealing cover 106 to move upward. The sealing cover 106 drives the mounting component 108 and the ceramic membrane 109 to move upward through the connecting rod 107 until the ceramic membrane 109 leaves the middle shell assembly 103. Then, the operator can replace the ceramic membrane 109 from the outside. In this way, it is convenient to replace the ceramic membrane 109, simplifying the operation and having the advantage of short maintenance cycle.

[0027] The mounting base 110 is fixedly connected to the bottom of the connecting rod 107, and the surface of the mounting base 110 is provided with a plurality of slots 112; a plurality of fixing parts 111 are respectively located on the side of the mounting base 110, and the fixing part 111 includes two support seats 113, studs 114 and baffles 115; the two support seats 113 are respectively fixedly connected to the mounting base 110 and are located on both sides of the mounting base 110; the studs 114 are threadedly connected to the mounting base 110 and are located on the inner side of the mounting base 110; the baffles 115 are fixedly connected to the studs 114 and are located on the side of the studs 114. The slot 112 is adapted to the shape of the ceramic membrane 109. The ceramic membrane 109 is inserted into the slot 112, so that the bottom of the ceramic membrane 109 rests on the support base 113. The support base 113 supports the ceramic membrane 109. Then, the stud 114 is screwed onto the mounting base 110, so that the baffle 115 is on the upper surface of the ceramic membrane 109, thereby completing the installation of the ceramic membrane 109. When it is necessary to remove the ceramic membrane 109, the stud 114 is turned to remove the stud 114 and the baffle 115 from the mounting base 110, and then the ceramic membrane 109 is removed from the mounting base 110 for replacement. This fixing method facilitates the installation and removal of the ceramic membrane 109 for replacement.

[0028] Secondly, the first guide rod 116 is fixedly connected to the top of the base 101; the first slider 117 is slidably connected to the first guide rod 116 and fixedly connected to the sealing cover 106, and is located between the first guide rod 116 and the sealing cover 106. The first guide rod 116 provides guidance for the first slider 117, and the first slider 117 provides guidance for the sealing cover 106, preventing the sealing cover 106 from shifting longitudinally.

[0029] Meanwhile, the support column 118 is fixedly connected to the top of the base 101; the lower housing 119 is fixedly connected to the top of the support column 118, and a chemical dosing port 129 is provided on the side of the lower housing 119; the water outlet pipe 120 is connected to the lower housing 119 and is located on the side of the lower housing 119. The washing liquid filtered by the ceramic membrane 109 flows into the lower housing 119 and is discharged from the water outlet pipe 120. The treatment agent can be added to the lower housing 119 through the chemical dosing port 129 to mix with the washing liquid and purify the washing liquid.

[0030] In addition, the motor 121 is fixedly connected to the lower housing 119 and located at the bottom of the lower housing 119; the rotating shaft 122 is fixedly connected to the output end of the motor 121 and located at the top of the motor 121; the stirring rod 123 is fixedly connected to the rotating shaft 122 and located on the side of the rotating shaft 122. Turning on the motor 121 drives the rotating shaft 122 and the stirring rod 123 to rotate, which can stir and mix the water treatment agent and the washing liquid, improving the treatment effect of the washing liquid.

[0031] Furthermore, the middle housing 124 is located on top of the lower housing 119; the second cylinder 125 is fixedly connected to the base 101, and the output rod of the second cylinder 125 is fixedly connected to the middle housing 124 and located on top of the base 101; the drain pipe 126 communicates with the middle housing 124 and is located on the side of the middle housing 124. The lower housing 119 is provided with a support step adapted to the shape of the middle housing 124, which is used to support the middle housing 124 and control the second cylinder 125 to drive the middle housing 124 to move upward away from the lower housing 119, thereby exposing the interior of the lower housing 119 for maintenance of the internal components.

[0032] Finally, the second guide rod 127 is fixedly connected to the top of the base 101; the second slider 128 is slidably connected to the second guide rod 127 and fixedly connected to the middle housing 124, and is located between the second guide rod 127 and the middle housing 124. The second guide rod 127 provides guidance for the second slider 128 and the middle housing 124, preventing the middle housing 124 from shifting when it moves.

[0033] When using this invention, fly ash washing liquid is added to the middle shell 124 through the inlet 130. The ceramic membrane 109 filters the suspended solids in the washing liquid, and the filtered washing liquid flows to the lower shell 119 and is discharged. When the ceramic membrane 109 needs to be replaced, the first cylinder 105 is controlled to drive the sealing cover 106 to move upward. The sealing cover 106 drives the mounting component 108 and the ceramic membrane 109 to move upward through the connecting rod 107 until the ceramic membrane 109 leaves the middle shell assembly 103. Then, the operator can replace the ceramic membrane 109 from the outside. In this way, it is convenient to replace the ceramic membrane 109, simplifying the operation and having the advantage of short maintenance cycle.

[0034] The second embodiment of this application is as follows: Based on the first embodiment, please refer to Figures 6-7 ,in, Figure 6 This is a schematic diagram of the overall structure of the second embodiment of the present invention; Figure 7 This is a front cross-sectional view of the entire second embodiment of the present invention.

[0035] The ceramic membrane purification system for fly ash washing liquid purification provided by the present invention further includes a rinsing component 201; the rinsing component 201 includes a water pump 202, a connecting pipe 203, a diversion pipe 204 and a plurality of nozzles 205.

[0036] In this specific embodiment, the rinsing assembly 201 is disposed on the sealing cover 106. The rinsing assembly 201 can rinse the surface of the ceramic membrane 109, preventing the surface of the ceramic membrane 109 from becoming clogged.

[0037] The water pump 202 is fixedly connected to the top of the sealing cover 106; the connecting pipe 203 is connected to the water pump 202 and located on the side of the water pump 202; the diversion pipe 204 is connected to the connecting pipe 203 and located at the bottom of the diversion pipe 204; and multiple nozzles 205 are fixedly connected to the diversion pipe 204 and located on the side of the diversion pipe 204. The water pump 202 guides water through the connecting pipe 203 and the diversion pipe 204 into the multiple nozzles 205, and the nozzles 205 spray water to rinse the ceramic membrane 109, while the wastewater is discharged through the drain pipe 126.

[0038] When using this invention, the water pump 202 is turned on, and the water pump 202 introduces water into a plurality of nozzles 205 through the connecting pipe 203 and the diversion pipe 204. The nozzles 205 spray water to rinse the ceramic membrane 109, and the sewage is discharged through the drain pipe 126.

[0039] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that implementing all or part of the above embodiments and making equivalent changes in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A ceramic membrane purification system for purifying fly ash washing liquid, comprising a base, characterized in that, It also includes purification components; The purification assembly includes a lower shell assembly, a middle shell assembly, and an upper shell assembly; The lower shell assembly is disposed on the top of the base, and the middle shell assembly is disposed on the top of the lower shell assembly; the upper shell assembly includes a first cylinder, a sealing cover, a connecting rod, a mounting component, and multiple ceramic membranes; the first cylinder is fixedly connected to the top of the base; the sealing cover is fixedly connected to the output rod of the first cylinder and is located on the top of the first cylinder, and the top of the sealing cover is provided with a water inlet; the connecting rod is fixedly connected to the sealing cover and is located at the bottom of the sealing cover; the mounting component is disposed at the bottom of the connecting rod; and multiple ceramic membranes are respectively disposed on the mounting component.

2. The ceramic membrane purification system for fly ash washing liquid purification treatment as described in claim 1, characterized in that, The mounting component includes a mounting base and multiple fixing parts; the mounting base is fixedly connected to the bottom of the connecting rod, and the surface of the mounting base is provided with multiple slots; the multiple fixing parts are respectively located on the side of the mounting base, and each fixing part includes two support seats, studs and baffles; the two support seats are respectively fixedly connected to the mounting base and located on both sides of the mounting base; the studs are threadedly connected to the mounting base and located inside the mounting base; the baffles are fixedly connected to the studs and located on the side of the studs.

3. The ceramic membrane purification system for fly ash washing liquid purification treatment as described in claim 2, characterized in that, The upper shell assembly further includes a first guide rod and a first slider; the first guide rod is fixedly connected to the top of the base; the first slider and the first guide rod are slidably connected and fixedly connected to the sealing cover, and are located between the first guide rod and the sealing cover.

4. The ceramic membrane purification system for fly ash washing liquid purification treatment as described in claim 3, characterized in that, The lower shell assembly includes a support column, a lower shell, and a water outlet pipe; the support column is fixedly connected to the top of the base; the lower shell is fixedly connected to the top of the support column, and a dosing port is provided on the side of the lower shell; the water outlet pipe communicates with the lower shell and is located on the side of the lower shell.

5. The ceramic membrane purification system for fly ash washing liquid purification treatment as described in claim 4, characterized in that, The lower shell assembly also includes a motor, a rotating shaft, and a stirring rod; the motor is fixedly connected to the lower shell and located at the bottom of the lower shell; the rotating shaft is fixedly connected to the output end of the motor and located at the top of the motor; the stirring rod is fixedly connected to the rotating shaft and located on the side of the rotating shaft.

6. The ceramic membrane purification system for fly ash washing liquid purification treatment as described in claim 5, characterized in that, The middle shell assembly includes a middle shell, a second cylinder, and a drain pipe; the middle shell is located at the top of the lower shell; the second cylinder is fixedly connected to the base, and the output rod of the second cylinder is fixedly connected to the middle shell and located at the top of the base; the drain pipe communicates with the middle shell and is located on the side of the middle shell.

7. The ceramic membrane purification system for fly ash washing liquid purification treatment as described in claim 6, characterized in that, The middle shell assembly further includes a second guide rod and a second slider; the second guide rod is fixedly connected to the top of the base; the second slider and the second guide rod are slidably connected and fixedly connected to the middle shell, and are located between the second guide rod and the middle shell.

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