CN213492198U - Water-saving filter pressing system - Google Patents
Water-saving filter pressing system Download PDFInfo
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- CN213492198U CN213492198U CN202022101493.1U CN202022101493U CN213492198U CN 213492198 U CN213492198 U CN 213492198U CN 202022101493 U CN202022101493 U CN 202022101493U CN 213492198 U CN213492198 U CN 213492198U
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Abstract
The utility model relates to a water-saving filter pressing system, which comprises a first storage tank, a second storage tank, a filter press and a third storage tank, wherein the first storage tank is of a cavity structure and is used for storing materials; the second storage tank is of a cavity structure and is used for storing washing water; the filter press comprises a water inlet and a water outlet; the water inlet of the filter press is connected with the first storage tank, and the filter press receives and presses materials to obtain a first filter cake and first filtrate; the water inlet of the filter press is also connected with a second storage tank, and receives washing water to wash the first filter cake twice to obtain primary washing water and secondary washing water; the water outlet of the filter press is used for discharging liquid; the third storage tank is of a cavity structure and comprises a water inlet and a water outlet. The design of storing the washing water by the third storage tank is adopted, so that the washing effect is maintained under the condition of saving half of water consumption, and the problem of energy waste is solved; the design that the aperture of the water outlet at the top of the thrust plate is 1.5-3 times that of the water outlet at the bottom is adopted, so that the problems of filter cake damage and energy waste are solved.
Description
Technical Field
The utility model relates to a filtration equipment pressure filter field, more specifically relates to a water-saving filter pressing system.
Background
The filter press is the main filtering equipment in the solid-liquid separation industry, materials are conveyed to a filter plate of the filter press through a pipeline and are filtered by filter cloth, solid matters are filtered to form filter cakes in a filter chamber, filtrate passes through the filter cloth and is discharged out of the filter press through a filtrate discharge port, then washing water is pumped into the filter chamber from four corner inlets of the filter chamber by using a washing pump for cross washing, namely, the water is fed into the filter chamber from the upper corner of the filter chamber to the lower corner of the opposite corner of the filter chamber. According to the washing method, due to the small aperture of the corner of the water inlet filter plate and the resistance generated when washing water penetrates through filter cloth, the washing time is long, impurities (various anions and cations) in a filter cake are not cleaned completely, and the quality of the filter cake product is unqualified.
In order to solve the above problems, the prior patent CN201710415746.2 discloses a device and a method for quickly washing filter cakes of a filter press, wherein an automatically controlled feeding valve is installed in a central feeding pipeline of a thrust plate of the filter press, the central feeding pipeline is welded with a water inlet pipeline, water outlet pipelines at four corners of the thrust plate are all provided with automatically controlled water outlet valves, washing water enters the middle of a filter chamber and is discharged diagonally, so that the washing speed of the filter cakes is fast and the washing purity of the filter cakes is good, and the washing water enters the middle of the filter chamber and has a high pressure and a high flow rate. Although can solve above-mentioned problem, the washing water pressure is not enough during the washing, and rivers only can discharge along two apopores in thrust plate bottom, can not discharge along the apopore of top and cause and wash insufficiently to the filter cake, and water pressure is too big, causes the waste to the destruction of filter cake and the energy.
Therefore, how to solve the problems of slow washing speed of the filter cake and low purity of the filter cake and overcome the defects in the prior art is a problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a water-saving filter pressing system, which comprises a first storage tank 1, a second storage tank 2, a filter press 3 and a third storage tank 4, wherein the first storage tank 1 is in a cavity structure and is used for storing materials; the second storage tank 2 is of a cavity structure and is used for storing washing water; the filter press 3 comprises a water inlet communicated with a central feeding pipe of the filter press 3 and water outlets communicated with water outlets at four corners of a thrust plate 5 of the filter press 3; a water inlet of the filter press 3 is connected with the first storage tank 1 and is used for receiving materials and squeezing the materials to obtain a first filter cake and first filtrate; the water inlet of the filter press 3 is also connected with the second storage tank 2 and is used for receiving washing water to wash the first filter cake twice to obtain primary washing water and secondary washing water; a water outlet of the filter press 3 is used for discharging first filtrate, primary washing water and secondary washing water; the third storage tank 4 is of a cavity structure and comprises a water inlet and a water outlet, and the water inlet of the third storage tank 4 is connected with the water outlet of the filter press 3 and used for receiving secondary washing water; and a water outlet of the third storage tank 4 is connected with a water inlet of the filter press 3 and is used for conveying secondary washing water to the filter press 3 to wash the first filter cake.
According to the utility model discloses an embodiment, the top apopore 51 aperture in 5 four corners of thrust plate of pressure filter 3 is 1.5 ~ 3 times in 52 apertures of bottom apopore.
According to an embodiment of the present invention, the washing machine further comprises a booster pump 6 and a pressure gauge 7, wherein the booster pump 6 is disposed between the water outlet of the third storage tank 4 and the water inlet of the filter press 3, and is used for boosting the primary washing water; the pressure gauge 7 is arranged between the booster pump 6 and the water inlet of the filter press 3 and is used for detecting the pressure value of the pressurized washing water.
According to an embodiment of the present invention, the third storage tank 4 further comprises a filter screen 41 and a resin layer 42, wherein the filter screen 41 is connected to the inner wall of the third storage tank 4 in an inscribed manner, and is used for filtering the primary washing water particle impurities; the resin layer 42 is inscribed on the inner wall of the third storage tank 4 and is used for filtering anions and cations.
According to an embodiment of the present invention, the filter screen 41 is a stainless steel filter screen 41 or a perforated plate with a hole diameter smaller than 1.5 mm.
In the utility model, because the design of storing the washing water by the third storage tank is adopted, the consumption of the washing water is saved, the washing effect is not reduced, the washing effect is maintained under the condition of saving half of the water consumption, and the problem of energy waste is solved; because the design that two apopore apertures in top are 1.5 ~ 3 times of two apopore apertures in bottom has been adopted, through reducing bottom apopore area, has controlled bottom apopore delivery flow, under the circumstances that guarantees to be able to follow the apopore delivery of top, reduces washing water inlet pressure and velocity of flow, and the energy saving has protected the filter cake can not damaged by the impact.
Drawings
FIG. 1 is a schematic view of a water-saving pressure filtration system;
FIG. 2 is a schematic view of a thrust plate of a water-saving filter press system;
FIG. 3 is a schematic view of another water-saving pressure filtration system.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements and techniques of the present invention so that advantages and features of the present invention may be more readily understood when implemented in a suitable environment. The following description is an embodiment of the present invention, and other embodiments related to the claims that are not explicitly described also fall within the scope of the claims.
FIG. 1 shows a schematic view of a water-saving pressure filtration system.
As shown in fig. 1, a water-saving filter pressing system comprises a first storage tank 1, a second storage tank 2, a filter press 3 and a third storage tank 4, wherein the first storage tank 1 is of a cavity structure and is used for storing materials; the second storage tank 2 is of a cavity structure and is used for storing washing water; the filter press 3 comprises a water inlet communicated with a central feeding pipe of the filter press 3 and water outlets communicated with water outlets at four corners of a thrust plate 5 of the filter press 3; a water inlet of the filter press 3 is connected with the first storage tank 1 and is used for receiving materials and squeezing the materials to obtain a first filter cake and first filtrate; the water inlet of the filter press 3 is also connected with the second storage tank 2 and is used for receiving washing water to wash the first filter cake twice to obtain primary washing water and secondary washing water; a water outlet of the filter press 3 is used for discharging first filtrate, primary washing water and secondary washing water; the third storage tank 4 is of a cavity structure and comprises a water inlet and a water outlet, and the water inlet of the third storage tank 4 is connected with the water outlet of the filter press 3 and used for receiving secondary washing water; and a water outlet of the third storage tank 4 is connected with a water inlet of the filter press 3 and is used for conveying secondary washing water to the filter press 3 to wash the first filter cake.
The first storage tank 1 is a sealed container for storing liquid or gas, is used for conveying stored materials to the filter press 3, and can adopt one or a combination of more than two of square, spherical and columnar shapes, for example, a cylindrical shape, has a large volume and a large water storage amount, can prevent local overheating, enables the periphery to bear uniform water pressure, and has the smallest stress on the tank wall under the same water level height.
The second storage tank 2 is a sealed container for storing liquid or gas, and is used for conveying the stored material to the filter press 3, and may be one or a combination of two or more of square, spherical and columnar, for example, cylindrical, with large volume and large water storage amount, and can prevent local overheating, make the water pressure around the tank uniform, and minimize the stress on the tank wall at the same water level.
The filter press 3 is a mechanical device which utilizes a filter medium to apply a certain pressure to an object to dialyze liquid, and comprises a thrust plate 5, a pressing plate, a crossbeam, a pressing mechanism, a filter plate, a filter frame, filter cloth and a squeezing diaphragm, and is a common solid-liquid separation device.
The third storage tank 4 is a sealed container for storing liquid or gas, the openings at both ends are a water inlet and a water outlet respectively, the water inlet is connected with the water outlet of the filter press 3 for receiving secondary washing water, the water outlet is connected with the water inlet of the filter press 3 for delivering the secondary washing water to the filter press 3 for washing filter cakes, one or a combination of more than two of square, spherical and columnar shapes can be adopted, for example, a cylindrical shape is adopted, the volume is large, the water storage capacity is large, local overheating can be prevented, the water pressure borne around the tank is uniform, and the stress on the tank wall is minimum under the same water level height.
When the system shown in fig. 1 operates, the water inlet of the filter press 3 is connected with the first storage tank 1, the water outlet of the filter press 3 is connected with the outside, the filter press 3 receives the materials conveyed by the first storage tank 1, and the materials are subjected to filter pressing to form a first filter cake and first filtrate. The first filtrate is discharged to the outside through a water outlet of a filter press 3, a water inlet of the filter press 3 is disconnected with a first storage tank 1 and is switched to be connected with a second storage tank 2, first washing is started, the filter press 3 receives washing water conveyed by the second storage tank 2, the washing water enters the filter press 3 and is completely contacted with a first filter cake and carries out various anions and cations, the washing water is discharged to the outside through a water outlet of the filter press 3, the discharged liquid is first washing water, after washing for 30 minutes, the impurity content in the first filter cake is about 20% -30%, and the first washing is completed.
And the water outlet of the filter press 3 is disconnected with the outside, the connection is switched to be connected with the water inlet of the third storage tank 4, the water inlet of the filter press 3 is kept connected with the second storage tank 2, the second washing is started, the filter press 3 receives the washing water conveyed by the second storage tank 2, the first filter cake is washed to obtain the second washing water, the second washing water is discharged into the third storage tank 4, and the washing is finished after 30 minutes of washing. The water inlet of the filter press 3 is disconnected with the second storage tank 2, the water outlet of the filter press 3 is disconnected with the water inlet of the third storage tank 4 and is connected with the outside, the filter press 3 carries out squeezing operation on the first filter cake, filtrate is discharged from the water outlet to obtain a second filter cake, the content of impurities in the second filter cake is less than 1%, and the filter pressing period of the first batch of materials is completed. And starting a discharging process, discharging the second filter cake, and then starting filter pressing of the next batch of materials.
The first washing of the subsequent batch of materials can be performed with the second washing water in the third tank 4 for the first washing operation, for example: after the feeding is finished, the water inlet of the filter press 3 is disconnected with the first storage tank 1, the materials are subjected to filter pressing to obtain a first filter cake and first filtrate, the water inlet of the filter press 3 is connected with the water outlet of the third storage tank 4 to receive the washing water of the secondary washing water to wash the materials, the washed primary washing water is discharged to the outside through the water outlet of the filter press 3, and after the washing is carried out for 30 minutes, the impurity content in the first filter cake is about 20% -30%, and the primary washing is finished.
The utility model discloses in, owing to adopted the design of third storage tank 4 storage washing water, practiced thrift the washing water quantity, the washing effect has not descended yet, has maintained the washing effect under the condition of having practiced thrift water consumption half, has solved the extravagant problem of the energy.
Fig. 2 shows a schematic view of a thrust plate of a water-saving filter press system.
As shown in fig. 2, the diameter of the top outlet hole 51 at the four corners of the thrust plate 5 of the filter press 3 is 1.5 to 3 times the diameter of the bottom outlet hole 52.
When the outlet pipe shown in fig. 2 is in operation, the washing liquid flows in from the middle inlet of the thrust plate 5, due to the influence of gravity, when the water flow entering from the middle inlet is greater than the water flow discharged from the bottom water outlet 52, the washing liquid is full of the filter chamber from bottom to top, and can be discharged from the bottom water outlet 52 first, the aperture of the bottom opening and the flow rate of the washing water flowing into the filter press 3 all influence the time for the washing water to flush the inner chamber of the filter press 3, the aperture of the bottom water outlet 52 is half of the aperture of the top water outlet 51, the water discharge of the bottom water outlet 52 is reduced, so that the washing liquid can be more quickly filled in the whole filter chamber than the previous situation that the apertures are the same, the whole filter cake is washed, under the condition that the washing.
The utility model discloses in, owing to adopted the design that top apopore 51 aperture is 1.5 ~ 3 times in bottom apopore 52 apertures, through reducing bottom apopore 52 area, controlled bottom apopore 52 discharge, under the circumstances that can follow top apopore play water 51 is guaranteed, reduce the washing water and go into water pressure and velocity of flow, the energy saving has protected the filter cake can not damaged by the impact.
FIG. 3 shows a schematic view of another water-saving pressure filtration system.
As shown in fig. 3, another water-saving filter pressing system further comprises a booster pump 6 and a pressure gauge 7, wherein the booster pump 6 is arranged between a water outlet of the third storage tank 4 and a water inlet of the filter press 3 and is used for boosting the primary washing water; the pressure gauge 7 is arranged between the booster pump 6 and the water inlet of the filter press 3 and is used for detecting the pressure value of the pressurized washing water.
In the utility model, the third storage tank 4 further comprises a filter screen 41 and a resin layer 42, the filter screen 41 is connected to the inner wall of the third storage tank 4 in an inscribed manner and is used for filtering once washing water particle impurities; the resin layer 42 is inscribed on the inner wall of the third storage tank 4 and is used for filtering anions and cations.
In the utility model discloses, filter screen 41 adopts stainless steel filter screen 41 or orifice plate that the aperture is less than 1.5 mm.
When the system shown in fig. 3 operates, the water inlet of the filter press 3 is connected with the first storage tank 1, the water outlet of the filter press 3 is connected with the outside, the filter press 3 receives the materials conveyed by the first storage tank 1, and the materials are subjected to filter pressing to obtain a first filter cake and a first filtrate. The first filtrate is discharged to the outside through a water outlet of a filter press 3, a water inlet of the filter press 3 is disconnected with a first storage tank 1 and is switched to be connected with a second storage tank 2, a water outlet of the filter press 3 is connected with a water inlet of a third storage tank 4, first washing is started, the filter press 3 receives washing water conveyed by the second storage tank 2, the washing water enters the filter press 3, is completely contacted with a first filter cake and carries out various anions and cations, the washing water enters the third storage tank 4 through the water outlet of the filter press 3, the liquid stored in the third storage tank 4 is first washing water at the moment, after 30 minutes of washing, the impurity content in the filter cake is about 20-30%, and the first washing is.
The water inlet of the filter press 3 is disconnected from the second storage tank 2 and is switched to be connected with the water outlet of the third storage tank 4, the third storage tank 4 filters the primary washing water, the primary washing water is filtered to obtain the washing water, the filter press 3 receives the washing water filtered by the third storage tank 4, the first filter cake is washed to obtain the primary washing water again, the primary washing water is discharged into the third storage tank 4, and the washing is finished after 30 minutes of washing.
And the third storage tank 4 filters the primary washing water, the water outlet of the filter press 3 is disconnected with the water inlet of the third storage tank 4 and is switched to be connected with the outside, the filter press 3 performs squeezing operation on the first filter cake, filtrate is discharged from the water outlet of the filter press 3 to obtain a second filter cake, the impurity content in the second filter cake is less than 1%, and the filter pressing period of the first batch of materials is completed. And starting a discharging process, discharging the second filter cake, and then starting filter pressing of the next batch of materials.
The subsequent batches may be washed with filtered washing water in the third tank 4, for example: after the feeding is finished, the water outlet of the filter press 3 is disconnected with the outside and connected with the third storage tank 4, the materials are subjected to filter pressing to obtain a first filter cake and first filtrate, the water inlet of the filter press 3 is connected with the water outlet of the third storage tank 4, the third storage tank 4 conveys the filtered washing water to the filter press 3, the washing is carried out for 30 minutes, and the first washing is finished. And (5) recovering the washing liquid to a third storage tank 4, wherein the third storage tank 4 is used as primary washing water for secondary washing, the third storage tank 4 conveys the filtered primary washing water to the filter press 3, and the washing is carried out for 30 minutes, so that the secondary washing is finished.
The utility model discloses in, owing to adopted the design of filter screen 41 and resin layer 42, practiced thrift the washing water quantity greatly, the washing effect has not descended yet, has maintained the washing effect under the condition with a jar of water only, has solved the extravagant problem of the energy.
In the utility model, because the design of storing the washing water by the third storage tank is adopted, the consumption of the washing water is saved, the washing effect is not reduced, the washing effect is maintained under the condition of saving half of the water consumption, and the problem of energy waste is solved; because the design that two apopore apertures in top are 1.5 ~ 3 times of two apopore apertures in bottom has been adopted, through reducing bottom apopore area, has controlled bottom apopore delivery flow, under the circumstances that can guarantee to follow the apopore delivery of top, reduces washing water inlet pressure and velocity of flow, and the energy saving has protected the filter cake can not damaged by the impact, has solved the filter cake and has been destroyed and the extravagant problem of energy.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim.
Claims (5)
1. A water-saving filter pressing system is characterized by comprising a first storage tank (1), a second storage tank (2), a filter press (3) and a third storage tank (4),
the first storage tank (1) is of a cavity structure and is used for storing materials;
the second storage tank (2) is of a cavity structure and is used for storing washing water;
the filter press (3) comprises a water inlet communicated with a central feeding pipe of the filter press (3) and water outlets communicated with water outlet holes at four corners of a thrust plate (5) of the filter press (3);
a water inlet of the filter press (3) is connected with the first storage tank (1) and is used for receiving materials and squeezing the materials to obtain a first filter cake and first filtrate;
the water inlet of the filter press (3) is also connected with the second storage tank (2) and is used for receiving washing water to wash the first filter cake twice to obtain primary washing water and secondary washing water;
the water outlet of the filter press (3) is used for discharging first filtrate, primary washing water and secondary washing water;
the third storage tank (4) is of a cavity structure and comprises a water inlet and a water outlet, and the water inlet of the third storage tank (4) is connected with the water outlet of the filter press (3) and used for receiving secondary washing water;
and a water outlet of the third storage tank (4) is connected with a water inlet of the filter press (3) and is used for conveying secondary washing water to the filter press (3) to wash the first filter cake.
2. The system of claim 1, wherein the diameter of the top water outlet (51) at the four corners of the thrust plate (5) of the filter press (3) is 1.5-3 times that of the bottom water outlet (52).
3. The system according to claim 1, further comprising a booster pump (6) and a pressure gauge (7),
the booster pump (6) is arranged between a water outlet of the third storage tank (4) and a water inlet of the filter press (3) and is used for boosting the primary washing water;
the pressure gauge (7) is arranged between the booster pump (6) and the water inlet of the filter press (3) and is used for detecting the pressure value of the pressurized washing water.
4. System according to claim 1, characterized in that said third tank (4) further comprises a sieve (41) and a resin layer (42),
the filter screen (41) is internally connected with the inner wall of the third storage tank (4) and is used for filtering particle impurities of the primary washing water;
the resin layer (42) is internally connected with the inner wall of the third storage tank (4) and is used for filtering anions and cations.
5. System according to claim 4, characterized in that the sieve (41) is a stainless steel sieve or perforated plate with a pore size of less than 1.5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022101493.1U CN213492198U (en) | 2020-09-23 | 2020-09-23 | Water-saving filter pressing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022101493.1U CN213492198U (en) | 2020-09-23 | 2020-09-23 | Water-saving filter pressing system |
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| Publication Number | Publication Date |
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| CN213492198U true CN213492198U (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022101493.1U Active CN213492198U (en) | 2020-09-23 | 2020-09-23 | Water-saving filter pressing system |
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| CN (1) | CN213492198U (en) |
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- 2020-09-23 CN CN202022101493.1U patent/CN213492198U/en active Active
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