CN217230531U - Sludge batch filter pressing system - Google Patents
Sludge batch filter pressing system Download PDFInfo
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- CN217230531U CN217230531U CN202220781387.9U CN202220781387U CN217230531U CN 217230531 U CN217230531 U CN 217230531U CN 202220781387 U CN202220781387 U CN 202220781387U CN 217230531 U CN217230531 U CN 217230531U
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Abstract
The application relates to organic solid waste treatment technical field, in particular to sludge batch filter pressing system, includes: the sludge storage tank before filtration is used for storing sludge to be filtered; the spiral conveyor is connected with the sludge storage tank before filtration and is used for conveying sludge to be filtered; and the batch filter pressing unit is connected with the screw conveyor and is used for performing batch filtration treatment on the sludge to be filtered, wherein the sludge to be filtered conveyed by the screw conveyor is temporarily stored in each batch of filtration treatment process, compressed gas is injected when the temporary storage amount of the sludge to be filtered reaches a filtration threshold value, and the temporarily stored sludge to be filtered is filtered by utilizing the pressure action generated by the compressed gas. Therefore, the problems of how to improve the stability and reliability of the organic solid waste treatment process and reduce the process energy consumption to a certain extent are solved.
Description
Technical Field
The application relates to the technical field of organic solid waste treatment, in particular to a sludge batch filter pressing system.
Background
Along with the continuous improvement of urbanization rate and the continuous promotion of ecological civilization construction, the discharge amount of organic solid wastes such as municipal sludge, kitchen garbage, excrement and the like continuously rises, and the efficient, reliable and economic treatment of the organic solid wastes is more and more emphasized. The existing treatment technologies of organic solid wastes include drying, incineration, digestion, wet oxidation and the like, most of the organic solid wastes are sludge-shaped or made into slurry (for simplicity and brevity, collectively referred to as "sludge") before being treated and pumped to a subsequent treatment system, but even if the organic solid wastes are subjected to a picking process and other processes, the sludge is inevitably mixed with impurities, such as stones, metals, branches, plastics and the like, the impurities are easy to damage or block a delivery pump and the subsequent treatment system during pumping, and the impurities which are easy to damage or block need to be filtered before the delivery pump.
In the prior art, impurities are generally filtered by a gravity filter, a screw pump plus a filter or a screw conveyer plus a filter, but the filtering effect is not ideal, so that the pump and equipment are often damaged or blocked, the treatment performance is obviously reduced, even abnormal shutdown is caused, the equipment maintenance and repair cost is high, the treatment cost is obviously increased due to the reduction of the treatment performance, the abnormal shutdown and the like, and therefore a more efficient, reliable and economic filtering technology is urgently needed.
SUMMERY OF THE UTILITY MODEL
The application provides a sludge batch filter pressing system to solve the effectiveness and reliability of organic solid waste filtration, and simultaneously, the stability and reliability of an organic solid waste treatment process can be correspondingly improved, and the problems of process energy consumption and the like are reduced to a certain extent.
The embodiment of the application provides a mud is filter-pressing system in batches, includes: the sludge storage tank before filtration is used for storing sludge to be filtered; the spiral conveyor is connected with the sludge storage tank before filtration and is used for conveying the sludge to be filtered; and the batch filter pressing unit is connected with the screw conveyor and used for carrying out batch filtration treatment on the sludge to be filtered, wherein the sludge to be filtered conveyed by the screw conveyor is temporarily stored in each batch filtration treatment process, compressed gas is injected when the temporary storage amount of the sludge to be filtered reaches a filtration threshold value, and the temporarily stored sludge to be filtered is filtered by utilizing the pressure action generated by the compressed gas.
Further, the batch press unit comprises: the batch filter-press tank is used for temporarily storing the sludge to be filtered conveyed by the screw conveyer; the sludge inlet valve of the batch filter-pressing tank is arranged at the inlet of sludge to be filtered at the upper part of the batch filter-pressing tank and is used for opening when the batch filtering treatment process is started each time and closing when the temporary storage amount of the sludge to be filtered reaches a filtering threshold value; the filter is arranged at the sludge outlet to be filtered at the lower part of the batch of pressure filtration tanks and is used for filtering the sludge to be filtered; one or more batch filter-pressing tank mud outlet valves, wherein the sludge inlet connecting pipe to be filtered and/or the sludge outlet connecting pipe after filtering of the filter are/is connected with the batch filter-pressing tank mud outlet valves; and the air inlet and exhaust assembly is arranged on the batch of filter-pressing tanks and is used for injecting compressed air when the temporary storage amount of the sludge to be filtered reaches a filtering threshold value, opening a batch of filter-pressing tank sludge outlet valves connected with the sludge inlet connecting pipes to be filtered and/or the filtered sludge outlet connecting pipes of the filter when the pressure of the batch of filter-pressing tanks reaches a target pressure value, and utilizing the pressure action generated by the compressed air to press and inject the sludge to be filtered temporarily stored in the batch of filter-pressing tanks to flow through the filter to form filtered sludge.
Further, the air intake and exhaust assembly is further configured to stop compressed air injection when the pressure of the batch of filter press tanks reaches a first preset pressure value, and exhaust the compressed air in the batch of filter press tanks until the pressure of the batch of filter press tanks is smaller than a second preset pressure value, where the first preset pressure value is larger than the second preset pressure value.
Optionally, the intake and exhaust assembly comprises: an air inlet valve and an air outlet valve which are arranged on the batch of filter-pressing tanks; or the compressed air inlet and exhaust valve is arranged on the batch of filter pressing tanks.
Further, still include: and the filtered sludge storage tank is connected with the batch of filter pressing units and is used for storing the filtered sludge.
Further, an inlet of the spiral conveyer is connected with the lower part of the sludge storage tank before filtration; or the spiral conveyer extends into the sludge storage tank before filtration.
Alternatively, the compressed gas may be compressed air or a process gas.
Therefore, the application has at least the following beneficial effects:
the sludge to be treated is injected into the batch pressure filtration tank in batches, the compressed gas is injected in batches to filter the sludge to be treated in batches, and the compressed gas is used as the conveying driving force for filtering, so that the problem that the driving force is insufficient when a screw conveyor or gravity is used as the conveying driving force for filtering in the related technology is solved, the filtering effect is better, the problem that a screw pump or a plunger pump and the like are used as the conveying driving force for filtering in the related technology to easily cause damage and blockage of a pump is also solved, and the stability and reliability of a system are better; meanwhile, the pressure and the flow of the compressed gas used as the filtering and conveying driving force can be conveniently adjusted according to actual needs, the problem that a large horse pulls a trolley or the power is insufficient is solved, the pressure energy of waste gas in the process can be fully utilized, the energy-saving effect is better, the filtering effect is good, the performance reduction of the subsequent treatment process and even abnormal shutdown and the like can be avoided, and the obvious energy-saving effect and economic benefit can be obtained. Therefore, the effectiveness and the reliability of the filtering effect of the organic solid waste are obviously improved, the stability and the reliability of the organic solid waste treatment process are correspondingly improved, and the process energy consumption is reduced to a certain extent.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a batch sludge pressure filtration system provided by an embodiment of the present application;
FIG. 2 is a schematic structural diagram I of a sludge batch pressure filtration system provided by an embodiment of the present application;
FIG. 3 is a schematic structural diagram II of a sludge batch pressure filtration system provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram III of a sludge batch pressure filtration system provided by an embodiment of the present application;
FIG. 5 is a fourth schematic structural diagram of a sludge batch pressure filtration system provided in the embodiment of the present application.
Description of reference numerals:
1. a sludge storage tank before filtration; 2, a screw conveyor; 3. a batch filter pressing unit; 30. a batch pressure filtration tank; 31. a filter; 32. a mud inlet valve of the batch filter-pressing tank; 33. a mud valve of the batch pressure filtration tank; 34. an intake valve; 35 an exhaust valve; 36. a compressed air inlet and outlet valve; 4. and (5) storing the filtered sludge.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.
A sludge batch pressure filtration system according to an embodiment of the present application will be described below with reference to the accompanying drawings, and specifically, fig. 1 is a block diagram of a sludge batch pressure filtration system according to an embodiment of the present application.
As shown in fig. 1, the sludge batch pressure filtration system 10 includes: a sludge storage tank 1 before filtration, a screw conveyor 2 and a batch filter pressing unit 3.
Wherein the sludge storage tank 1 before filtration is used for storing sludge to be filtered; the screw conveyor 2 is used for conveying sludge to be filtered; the batch filter pressing unit 3 is used for performing batch filter treatment on the sludge to be filtered, wherein the sludge to be filtered conveyed by the screw conveyor 2 is temporarily stored in each batch filter treatment process, compressed gas is injected when the temporary storage amount of the sludge to be filtered reaches a filter threshold value, and the temporarily stored sludge to be filtered is filtered by utilizing the pressure action generated by the compressed gas.
Wherein, the compressed gas can be compressed air or generated gas in the process; the sludge storage tank 1, the screw conveyor 2 and the batch filter pressing unit 3 are connected in sequence before filtration.
It can be understood that the sludge to be treated can be injected in batches, and the compressed gas is injected in batches to filter the sludge to be treated in batches, so that the sludge treatment system has the characteristics of excellent filtering effect, better system stability and reliability and obvious energy-saving effect.
In the embodiment of the present application, the connection manner between the screw conveyor 2 and the sludge storage tank 1 before filtration may be specifically set according to practical situations, which is not particularly limited.
As a possible arrangement, as shown in FIGS. 2 to 4, the lower part of the sludge storage tank 1 before filtration is connected with the inlet of the screw conveyor 2, and the outlet of the screw conveyor 2 is connected with the batch pressure filtration tank sludge inlet valve 32.
As another possible arrangement, as shown in fig. 5, the screw conveyor 2 extends into the sludge storage tank 1 before filtration, and the conveying efficiency of the sludge to be filtered stored in the sludge storage tank 1 before filtration is improved by the screw blade of the screw conveyor 2. Compared with the embodiment shown in fig. 2 to 4, the embodiment shown in fig. 5 has a smaller functional difference only in the connection mode of the screw conveyor 2 and the sludge storage tank 1 before filtration, but the connection mode of the embodiment shown in fig. 1 is simpler in maintenance and can be selected as required.
In the present embodiment, the batch press unit 3 comprises: batch filter press tank 30, filter 31, batch filter press tank mud inlet valve 32, batch filter press tank mud outlet valve 33, air inlet valve 34 and air outlet valve 35.
Wherein, the batch filter-press tank 30 is used for temporarily storing the sludge to be filtered conveyed by the screw conveyor 2; the filter 31 is used for filtering sludge to be filtered; the batch filter-press tank sludge inlet valve 32 is used for being opened at the beginning of each batch filter treatment process and being closed when the temporary storage amount of the sludge to be filtered reaches a filter threshold value; one or more batch filter-pressing tank mud outlet valves, wherein the sludge inlet connecting pipe to be filtered and/or the sludge outlet connecting pipe after filtering of the filter 31 are/is connected with the batch filter-pressing tank mud outlet valves 33; the air inlet and outlet assembly is used for injecting compressed air when the temporary storage amount of the sludge to be filtered reaches a filtering threshold value, opening a sludge outlet valve 33 of the batch filter-pressing tank connected with a sludge inlet connecting pipe to be filtered of the filter 31 and/or a filtered sludge outlet connecting pipe when the pressure of the batch filter-pressing tank reaches a target pressure value, and utilizing the pressure action generated by the compressed air to press and inject the sludge to be filtered temporarily stored in the batch filter-pressing tank 30 to flow through the filter 31 to form filtered sludge; and stopping the injection of the compressed gas when the pressure of the batch of filter-pressing tanks reaches a first preset pressure value, and discharging the compressed gas in the batch of filter-pressing tanks after the completion of the filtration of one batch, namely after the sludge to be filtered temporarily stored in the batch of filter-pressing tanks 30 is discharged by pressure injection until the pressure of the batch of filter-pressing tanks is less than a second preset pressure value.
The first preset pressure value is greater than the second preset pressure value, and the first preset pressure value, the second preset pressure value and the target pressure value can be specifically set according to actual conditions, for example, the second preset pressure value can be set to be an atmospheric pressure, and the like, which is not specifically limited to this.
Specifically, an inlet for sludge to be filtered is provided at the upper part of the batch pressure filtration tank 30 and connected to a batch pressure filtration tank sludge inlet valve 32, and the sludge to be filtered is transported from the sludge storage tank 1 before filtration to the batch pressure filtration tank 30 by the transport of the screw conveyor 2 when the batch pressure filtration tank sludge inlet valve 32 is opened.
A sludge outlet to be filtered is arranged at the lower part of the batch pressure filtration tank 30 and is connected to a sludge inlet connecting pipe to be filtered of the filter 31, a batch pressure filtration tank sludge outlet valve 33 is connected to the front end of the filter 31, namely the sludge inlet connecting pipe to be filtered of the filter 31 (shown in figure 2) or the rear end, namely the sludge outlet connecting pipe after filtration (shown in figure 3), or a batch pressure filtration tank sludge outlet valve 33 is connected to the front end of the filter 31, namely the sludge inlet connecting pipe to be filtered of the filter 31 and the rear end, namely the sludge outlet connecting pipe after filtration, respectively, and when the batch pressure filtration tank sludge outlet valve 33 is opened, the sludge to be filtered can flow through the filter 31, impurities in the sludge to be filtered are intercepted by a filter screen arranged in the filter 31, and the sludge to be filtered forms a filtered sludge to flow out of the filter 31 after being filtered by the filter 31; the sundries intercepted by the filter screen in the filter 31 can be cleaned off-line at regular time, and an on-line cleaning system can also be arranged for cleaning and cleaning on line. If a plurality of batches of mud valves 33 are provided, other batches of mud valves 33 can be activated when a problem occurs in one batch of mud valves 33, so as to improve the reliability of the system, but the system is relatively complex. Because of batch filter pressing, the damaged batch filter pressing tank mud outlet valve 33 can be replaced at any time. In addition, in order to further improve the reliability of the system and facilitate replacement of damaged valves, manual valves are usually disposed at the inlet and outlet of the equipment, and identification is given in the embodiment for brevity and clarity of description.
The intake and exhaust assembly may include: an air inlet valve and an air outlet valve which are arranged on the batch pressure filtration tank; alternatively, the compressed air inlet/outlet valve disposed on the batch of filter press tanks may be selected by those skilled in the art according to actual conditions, and is not particularly limited.
(1) As shown in fig. 2 and 3, an intake pipe and an exhaust pipe are provided on the batch pressure filtration tank 30, an intake valve 34 is connected to the intake pipe to control the injection of compressed air, which may be compressed air or generated gas in the process, into the batch pressure filtration tank 30, and an exhaust valve 35 is connected to the exhaust pipe to control the exhaust of the compressed air from the batch pressure filtration tank 30
(2) As shown in fig. 4, the embodiment of the present application also provides a common gas injection and compression valve, and a gas inlet and outlet connection pipe for simultaneously gas inlet and outlet is provided on the batch of filter canisters 30, and a compressed gas inlet and outlet valve 36 is connected thereto, which is otherwise the same as that shown in fig. 1. Compared with the embodiment in fig. 2 and 3, although the embodiment in fig. 4 has one less connecting pipe and one less control valve, the system control is more complicated, and the function difference is not great, so that the embodiment can be selected according to the needs.
In the embodiment of the present application, as shown in fig. 2 to 5, the apparatus 10 of the embodiment of the present application further includes: a filtered sludge storage tank 4, wherein the filtered sludge storage tank 4 is used for storing filtered sludge.
Specifically, as shown in fig. 2 to 5, the rear end of the filter 31, i.e., a filtered sludge outlet connection, is connected to the filtered sludge storage tank 4 to receive and store the filtered sludge filtered through the filter 31.
The sludge batch pressure filtration system 10 will now be described with reference to an embodiment, taking the system shown in fig. 2 and 3 as an example, with the inlet valve 34 and the outlet valve 35 of the batch pressure filtration tank 30 as follows:
(1) when the mud inlet valve 32 of the batch filter-pressing tank is opened, the sludge to be filtered stored in the sludge storage tank 1 before filtering is conveyed by the screw conveyor 2 and enters the batch filter-pressing tank 30 for temporary storage through the mud inlet valve 32 of the batch filter-pressing tank of the batch filter-pressing unit 3.
(2) When the sludge to be filtered temporarily stored in the batch pressure filtration tank 30 reaches a certain amount, the screw conveyor 2 and the batch pressure filtration tank sludge inlet valve 32 are closed; closing the exhaust valve 35, then opening the intake valve 34 to inject compressed gas into the batch pressure filtration tank 30, so that the pressure in the batch pressure filtration tank 30 exceeds the pressure in the filtered sludge storage tank 4, and the pressure difference is generally 0.1MPa to 1.0 MPa; opening a batch filter-pressing tank mud outlet valve 33, allowing the sludge to be filtered in the batch filter-pressing tank 30 to flow through a filter 31 under the pressure action of compressed gas in the batch filter-pressing tank 30, filtering to form filtered sludge, and conveying the filtered sludge to a filtered sludge storage tank 4 for storage; closing the inlet valve 34 when the pressure in the batch pressure canister 30 reaches the set pressure; closing the mud outlet valve 33 of the batch pressure filtration tank after the batch filtration is finished, opening the exhaust valve 35 to exhaust gas so as to reduce the pressure in the batch pressure filtration tank 30 to the atmospheric pressure, thereby finishing the batch pressure filtration; and filtering the sludge to be filtered stored in the sludge storage tank 1 before filtering one batch by one batch and then one batch by one batch in turn under the pressure transmission of compressed gas, and transmitting the filtered sludge to the filtered sludge storage tank 4 for storage.
(3) The sludge to be filtered temporarily stored in the batch pressure filtration tank 30 is conveyed and stored in the filtered sludge storage tank 4 through batch pressure filtration, so that the subsequent treatment process is facilitated, impurities in the sludge to be filtered are filtered after the batch pressure filtration, the sludge conveying pump in the sludge treatment process is not damaged, the system is not blocked, the influence of the impurities in the system on the subsequent treatment performance, even abnormal shutdown and the like is avoided, and the high-efficiency safety reliability of the system is obviously improved.
According to the sludge batch pressure filtration system provided by the embodiment of the application, sludge to be treated is injected into the batch pressure filtration tank in batches, compressed gas is injected in batches to filter the sludge to be treated in batches, the compressed gas is used as the conveying driving force for filtering, the problem that the driving force is insufficient when a screw conveyor or gravity is used as the conveying driving force for filtering in the related technology is solved, the filtering effect is better, the problem that the conveying driving force for filtering by adopting a screw pump or a plunger pump and the like in the related technology is easily damaged and blocked is also solved, and the stability and reliability of the system are better; meanwhile, the pressure and the flow of the compressed gas used as the driving force for filtering and conveying can be conveniently adjusted according to actual needs, the problem of large horse-drawn trolleys or insufficient power can be solved, the pressure energy of waste gas in the process can be fully utilized, the energy-saving effect is better, the good filtering effect can also avoid performance reduction of the subsequent treatment process, even abnormal shutdown and the like, and obvious energy-saving effect and economic benefit can be obtained.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or N embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "N" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (7)
1. A sludge batch pressure filtration system, comprising:
the sludge storage tank before filtration is used for storing sludge to be filtered;
the spiral conveyor is connected with the sludge storage tank before filtration and is used for conveying the sludge to be filtered;
and the batch filter pressing unit is connected with the screw conveyer and used for carrying out batch filtration treatment on the sludge to be filtered, wherein the sludge to be filtered conveyed by the screw conveyer is temporarily stored in each batch of filtration treatment process, compressed gas is injected when the temporary storage amount of the sludge to be filtered reaches a filtration threshold value, and the temporarily stored sludge to be filtered is filtered by utilizing the pressure action generated by the compressed gas.
2. The system according to claim 1, wherein the batch pressure filtration unit comprises:
the batch filter-press tank is used for temporarily storing the sludge to be filtered conveyed by the screw conveyer;
the sludge inlet valve of the batch pressure filtration tank is arranged at the sludge inlet of the sludge to be filtered at the upper part of the batch pressure filtration tank and is used for being opened when the batch filtration treatment process is started each time and being closed when the temporary storage amount of the sludge to be filtered reaches the filtration threshold value;
the filter is arranged at the sludge outlet to be filtered at the lower part of the batch of filter-pressing tanks and is used for filtering the sludge to be filtered;
one or more batch filter-pressing tank mud outlet valves, wherein the sludge inlet connecting pipe to be filtered and/or the filtered sludge outlet connecting pipe of the filter are/is connected with the batch filter-pressing tank mud outlet valves;
and the air inlet and exhaust assembly is arranged on the batch of filter-pressing tanks and is used for injecting compressed air when the temporary storage amount of the sludge to be filtered reaches a filtering threshold value, opening a batch of filter-pressing tank sludge outlet valves connected with the sludge inlet connecting pipes to be filtered and/or the filtered sludge outlet connecting pipes of the filter when the pressure of the batch of filter-pressing tanks reaches a target pressure value, and utilizing the pressure action generated by the compressed air to press and inject the sludge to be filtered temporarily stored in the batch of filter-pressing tanks to flow through the filter to form filtered sludge.
3. The system of claim 2, wherein the air intake and exhaust assembly is further configured to stop the injection of compressed air when the pressure of the batch of filter canisters reaches a first predetermined pressure value, and to exhaust the compressed air from the batch of filter canisters until the pressure of the batch of filter canisters is less than a second predetermined pressure value, wherein the first predetermined pressure value is greater than the second predetermined pressure value.
4. The system of claim 3, wherein the intake and exhaust assembly comprises:
an air inlet valve and an air outlet valve which are arranged on the batch of filter-pressing tanks; alternatively, the first and second liquid crystal display panels may be,
and the compressed air inlet and outlet valve is arranged on the batch of pressure filtration tanks.
5. The system of claim 1, further comprising:
and the filtered sludge storage tank is connected with the batch of filter pressing units and is used for storing filtered sludge.
6. The system of claim 1, wherein,
the inlet of the screw conveyor is connected with the lower part of the sludge storage tank before filtration; alternatively, the first and second electrodes may be,
the spiral conveyer extends into the sludge storage tank before filtration.
7. The system according to any one of claims 1 to 6, wherein the compressed gas is compressed air or a process gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220781387.9U CN217230531U (en) | 2022-04-06 | 2022-04-06 | Sludge batch filter pressing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220781387.9U CN217230531U (en) | 2022-04-06 | 2022-04-06 | Sludge batch filter pressing system |
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| Publication Number | Publication Date |
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| CN217230531U true CN217230531U (en) | 2022-08-19 |
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| CN202220781387.9U Active CN217230531U (en) | 2022-04-06 | 2022-04-06 | Sludge batch filter pressing system |
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