CN210394122U - Filter pressing device for sewage treatment - Google Patents
Filter pressing device for sewage treatment Download PDFInfo
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- CN210394122U CN210394122U CN201920808897.9U CN201920808897U CN210394122U CN 210394122 U CN210394122 U CN 210394122U CN 201920808897 U CN201920808897 U CN 201920808897U CN 210394122 U CN210394122 U CN 210394122U
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- roller
- dewatering
- filter belt
- filter
- belt loop
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Abstract
The utility model discloses a filter pressing device for sewage treatment belongs to filtration equipment. The method comprises the following steps: the device comprises a filter belt, a first dewatering roller, a second dewatering roller, a tension adjusting roller, a driving roller, a guide roller, an auxiliary roller, a driven stainless steel roller and an elastic piece. When the elastic part of the first dewatering roller contacts with the filter belt, the air is sealed in a sealed area formed by the elastic part, the filter belt and the first dewatering roller, along with the rotation of the first dewatering roller, the acting force between the filter belt and the elastic part is gradually increased, the air is compressed, so that a certain pressure difference exists between the two sides of the filter belt, and the water in the muddy water mixture in the two filter belts is extruded to pass through the filter belt, thereby realizing dewatering; and then compressed air is introduced into a sealing area consisting of the second dewatering roll, the sealing element, the auxiliary roll and the driven stainless steel roll, and when the filter belt passes through the sealing area, moisture in the mud-water mixture is sprayed out in a bead form along with the compressed air, so that the dewatering efficiency is further improved.
Description
Technical Field
The utility model belongs to filtration equipment, especially a filter pressing device for sewage treatment.
Background
The sludge generated by sewage treatment has higher water content, and the organic matter content and the ash content in the sludge, particularly the addition amount of a flocculating agent, have important influence on the final solid content. The mud cake obtained after treatment contains rich nutrient elements such as nitrogen, phosphorus and potassium, and is extremely favorable for recycling resources if the treatment is proper.
The sludge-water separation in the prior art generally adopts a filter pressing device to filter, and has the characteristics of high working efficiency, low energy consumption and the like. But the size of pressure is adjusted through the distance between two filter belts in filter equipment, when pressure is too little, can not reach the effect of filtration and dehydration, and when pressure was too big, silt was easy to run mud to the filter belt both sides, leads to the atress of filter belt uneven, and local pressure is too, influences the filter belt, even the life of equipment. And for different types or concentrations of sludge, the pressure change value is not fixed, so that the difficulty of pressure control is further increased.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: provides a filter pressing device for sewage treatment, which can realize the effect of high dehydration rate under a smaller pressure.
The technical scheme is as follows: a filter pressing device for sewage treatment comprises: the device comprises a frame, an upper filter belt loop, a lower filter belt loop and an air injection assembly.
The rack is formed by welding a plurality of sectional materials;
the upper filter belt loop comprises a filter belt, a first dewatering roller, a second dewatering roller and a tension adjusting roller which are fixed on the frame and are sequentially arranged along the filter belt, a driving roller which is arranged at one end of the frame and is driven by a motor, and a plurality of other guide rollers fixed on the frame; the filter belt is sequentially wound on the first dewatering roller, the second dewatering roller, the tension adjusting roller, the driving roller and the guide roller to form a closed loop;
the lower filter belt loop is arranged at the lower part of the upper filter belt loop, and the structure of the lower filter belt loop is the same as that of the upper filter belt loop; the first dewatering roll and the second dewatering roll of the lower filter belt loop are arranged at intervals with a preset angle with the first dewatering roll and the second dewatering roll of the upper filter belt loop;
the air injection assemblies are arranged in two groups and are respectively arranged at the second dewatering rollers of the upper filter belt loop and the lower filter belt loop; the method comprises the following steps: the second dewatering roller is arranged at the center point of the second dewatering roller, the extension line of the filter belt contact point connecting line and an auxiliary roller with a preset distance from the filter belt, two driven stainless steel rollers with small diameters are arranged on a gap reserved between the second dewatering roller and the auxiliary roller, sealing elements at two ends of the second dewatering roller, the auxiliary roller and the driven stainless steel rollers are arranged, and a compressed air inlet on the sealing elements is arranged.
In a further embodiment, the drive rollers of the upper and lower belt circuits are connected to the same motor through gear sets of the same type.
In a further embodiment, the surface of the roll body of the first dewatering roll is provided with a plurality of rugged elastic members.
In a further embodiment, the overlapped part of the two filter belts of the upper filter belt loop or the lower filter belt loop from the first dewatering roll of the upper filter belt loop or the lower filter belt loop to the driving roll is a filtering dewatering area; an included angle formed between the two filter belts by taking the first dewatering roller as a vertex is taken as a sludge inlet; the two driving wheels which are arranged up and down in the upper filter belt loop or the lower filter belt loop separate the two filter belts, and the area where the two filter belts are separated is a mud cake outlet.
In a further embodiment, the fixed ends of the tension adjusting roller and the driven stainless steel roller are arranged on sliding grooves on two sides of the frame.
Has the advantages that: the utility model relates to a filter pressing device for sewage treatment, when first passing through first dehydration roller, when the elastic component contacts with the filter belt, the air is sealed in the confined area that comprises elastic component, filter belt and first dehydration roller, along with the rotation of first dehydration roller, the effort between filter belt and the elastic component is gradually enlarged, and air compression makes certain pressure difference exist in both sides of the filter belt, extrudes the moisture in the muddy water mixture in two filter belts to pass through the filter belt, realizes the dehydration; then when the second dewatering roll is led in, compressed air is led into a sealing area formed by the sealing element, the second dewatering roll, the auxiliary roll and the driven stainless steel roll, and when the filter belt passes through the sealing area, moisture in the muddy water mixture is sprayed out in a bead form along with the compressed air, so that the dewatering efficiency is further improved.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Figure 2 is a schematic cross-sectional view of a first dewatering roll according to the invention.
Fig. 3 is a schematic diagram of an air injection assembly of the present invention.
The reference signs are: a filter belt 1, a first dewatering roller 2, a second dewatering roller 3, a tension adjusting roller 4, a driving roller 5, a guide roller 6, an auxiliary roller 7, a driven stainless steel roller 8 and an elastic member 201.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, a filter pressing device for sewage treatment comprises: the device comprises a frame, an upper filter belt loop, a lower filter belt loop and an air injection assembly.
The frame is formed by welding a plurality of sectional materials to form an external profile frame of the filter pressing device, and the frame plays a role in fixing and supporting.
The upper filter belt loop comprises: a filter belt 1, a first dewatering roll 2, a second dewatering roll 3 and a tension adjusting roll 4. The first dewatering roll 2, the second dewatering roll 3 and the tension adjusting roll 4 are all fixed on the stand and are sequentially arranged along the direction of the filter belt 1, wherein the fixed end of the tension adjusting roll 4 is arranged on vertical chutes at two sides of the stand and can move up and down along the chutes in the vertical direction; the driving roller 5 is arranged at one end of the frame and is driven by a motor; other guide rollers 6 are fixed on the frame in sequence; the filter belt 1 is wound on the first dewatering roll 2, the second dewatering roll 3, the tension adjusting roll 4, the driving roll 5 and the guide roll 6 in sequence to form a closed loop. The lower filter belt loop is arranged on the lower portion of the upper filter belt loop, the structure of the lower filter belt loop is the same as that of the upper filter belt loop, and the driving rollers 5 of the upper filter belt loop and the lower filter belt loop are connected with the same motor through gear sets of the same model, so that relative sliding between the two filter belts 1 can be guaranteed. The overlapped part of the two filter belts 1 of the upper filter belt loop or the lower filter belt loop from the first dewatering roll 2 of the upper filter belt loop or the lower filter belt loop to the driving roll 5 is a filtering and dewatering area; an included angle formed between the two filter belts 1 by taking the first dewatering roller 2 as a vertex is taken as a sludge inlet; the area of the upper filter belt loop or the lower filter belt loop, which is divided by the two filter belts 1, is a mud cake outlet by the two driving wheels which are arranged up and down. In the filtering and dewatering zone, the first dewatering roll 2 and the second dewatering roll 3 of the lower filter belt loop and the first dewatering roll 2 and the second dewatering roll 3 of the upper filter belt loop are arranged at intervals of a preset angle. When the mud-water mixture passes through the filtering and dewatering area between the two filter belts 1, the mud-water mixture is squeezed between the two filter belts 1 and between the filter belts 1 and a plurality of dewatering rolls to realize dewatering.
As shown in fig. 3, the air injection assemblies are provided in two groups, and are respectively arranged at the second dewatering rolls 3 of the upper filter belt loop and the lower filter belt loop; the method comprises the following steps: a second dewatering roll 3, an auxiliary roll 7 and a passive stainless steel roll 8, seals and compressed air inlet. Wherein, the auxiliary roller 7 is arranged on the extension line of the connecting line of the center point of the second dewatering roller 3 and the contact point of the filter belt 1, and a preset distance is reserved between the auxiliary roller and the filter belt 1; two driven stainless steel rollers 8 with small diameters are arranged on a gap reserved between the second dewatering roller 3 and the auxiliary roller 7, sealing elements are arranged at two ends of the second dewatering roller 3, the auxiliary roller 7 and the driven stainless steel rollers 8, and a compressed air inlet is arranged on the sealing elements. Wherein, the fixed ends of the two passive stainless steel rollers 8 are arranged on the chutes at the two sides of the frame and used for adjusting the distance between the passive stainless steel rollers 8 and the second dewatering roller 3. When the filter belt 1 carrying the muddy water mixture passes through the second dewatering roll 3, the water in the muddy water mixture is sprayed out in the form of beads along with the compressed air, so that the apparatus has a high dewatering rate. Experiments prove that when the air injection assembly is used for dehydrating by adopting 0.5MPa of compressed air, the water content in the mud cake can be reduced to 21 percent from 70 percent of the original water content (without adopting the air injection assembly).
As a preferable mode, as shown in fig. 2, the surface of the first dewatering roll 2 is provided with a plurality of rugged elastic members 201. The elastic member 201 is made of natural rubber, and has a rubber content of 25% and good elasticity. When the filter belt 1 carrying the muddy water mixture passes through the first dewatering roll 2, when the elastic member 201 contacts with the filter belt 1 (i.e. the arc ab section in fig. 2), air is enclosed in an enclosed area formed by the elastic member 201, the filter belt 1 and the first dewatering roll 2, along with the rotation of the first dewatering roll 2, the acting force between the filter belt 1 and the elastic member 201 is gradually increased (i.e. the arc bc section in fig. 2), air compression is performed, so that a certain pressure difference exists between two sides of the filter belt 1, the muddy water mixture in the two filter belts 1 is squeezed, and the water passes through the filter belt 1, so that dewatering is realized.
In order to facilitate understanding of the technical scheme of the filter pressing device for sewage treatment, the working process and the working principle are briefly described: the mud-water mixture is uniformly poured into the sludge inlet, and the tension adjusting roller 4 is adjusted until the filter belts 1 are just stretched straight in the horizontal direction, and at the moment, the pressure between the two filter belts 1 is not too large. Then when the filter belt 1 carrying the muddy water mixture passes through the two first dewatering rolls 2, on one hand, when the elastic member 201 is in contact with the filter belt 1 (namely, an arc ab section in the attached drawing 2), air is sealed in a sealed area formed by the elastic member 201, the filter belt 1 and the first dewatering rolls 2, along with the rotation of the first dewatering rolls 2, the acting force between the filter belt 1 and the elastic member 201 is gradually increased (namely, an arc bc section in the attached drawing 2), air is compressed, so that a certain pressure difference exists between two sides of the filter belt 1, and the water in the muddy water mixture in the two filter belts 1 is squeezed to pass through the filter belt 1, thereby realizing dewatering; on the other hand, the muddy water mixture is uniformly distributed in the filter belt 1 by extrusion. When the filter belt 1 carrying the muddy water mixture passes through the second dewatering roll 3, compressed air of 0.3-0.8 MPa is introduced into the compressed air holes, and water in the muddy water mixture is sprayed out in the form of water drops along with the compressed air, so that the dewatering process is completed. And finally, discharging the mud cakes through a mud cake outlet.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the present invention does not separately describe various possible combinations.
Claims (5)
1. A filter pressing device for sewage treatment is characterized by comprising:
the rack is formed by welding a plurality of sectional materials;
the upper filter belt loop comprises a filter belt, a first dewatering roller, a second dewatering roller and a tension adjusting roller which are fixed on the frame and are sequentially arranged along the filter belt, a driving roller which is arranged at one end of the frame and is driven by a motor, and a plurality of other guide rollers fixed on the frame; the filter belt is sequentially wound on the first dewatering roller, the second dewatering roller, the tension adjusting roller, the driving roller and the guide roller to form a closed loop;
the lower filter belt loop is arranged at the lower part of the upper filter belt loop, and the structure of the lower filter belt loop is the same as that of the upper filter belt loop; the first dewatering roll and the second dewatering roll of the lower filter belt loop are arranged at intervals with a preset angle with the first dewatering roll and the second dewatering roll of the upper filter belt loop;
the air injection assemblies are arranged in two groups and are respectively arranged at the second dewatering rollers of the upper filter belt loop and the lower filter belt loop; the method comprises the following steps: the second dewatering roller is arranged at the center point of the second dewatering roller, the extension line of the filter belt contact point connecting line and an auxiliary roller with a preset distance from the filter belt, two driven stainless steel rollers with small diameters are arranged on a gap reserved between the second dewatering roller and the auxiliary roller, sealing elements at two ends of the second dewatering roller, the auxiliary roller and the driven stainless steel rollers are arranged, and a compressed air inlet on the sealing elements is arranged.
2. A filter pressing device for sewage treatment as claimed in claim 1 wherein the driving rollers of the upper and lower filter circuits are connected to the same motor through gear sets of the same type.
3. A filter press device for sewage treatment as claimed in claim 1 wherein the surface of the roll body of the first dewatering roll is provided with a plurality of rugged elastic members.
4. A filter pressing device for sewage treatment as claimed in claim 1 wherein the overlapped part of the two filter belts of the upper filter belt loop or the lower filter belt loop from the first dewatering roll of the upper filter belt loop or the lower filter belt loop to the driving roll is a filtering and dewatering zone; an included angle formed between the two filter belts by taking the first dewatering roller as a vertex is taken as a sludge inlet; the two driving wheels which are arranged up and down in the upper filter belt loop or the lower filter belt loop separate the two filter belts, and the area where the two filter belts are separated is a mud cake outlet.
5. A filter pressing device for sewage treatment as claimed in claim 1 wherein the fixed ends of the tension adjusting roller and the passive stainless steel roller are mounted on the sliding grooves on both sides of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920808897.9U CN210394122U (en) | 2019-05-31 | 2019-05-31 | Filter pressing device for sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920808897.9U CN210394122U (en) | 2019-05-31 | 2019-05-31 | Filter pressing device for sewage treatment |
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| Publication Number | Publication Date |
|---|---|
| CN210394122U true CN210394122U (en) | 2020-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920808897.9U Active CN210394122U (en) | 2019-05-31 | 2019-05-31 | Filter pressing device for sewage treatment |
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| CN (1) | CN210394122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620559A (en) * | 2021-07-27 | 2021-11-09 | 蔡永玲 | Belt press roller mechanism capable of avoiding backflow of separated water |
| CN114506989A (en) * | 2022-03-18 | 2022-05-17 | 苏州市职业大学 | High-dryness sludge extrusion device with anti-overflow function |
-
2019
- 2019-05-31 CN CN201920808897.9U patent/CN210394122U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113620559A (en) * | 2021-07-27 | 2021-11-09 | 蔡永玲 | Belt press roller mechanism capable of avoiding backflow of separated water |
| CN114506989A (en) * | 2022-03-18 | 2022-05-17 | 苏州市职业大学 | High-dryness sludge extrusion device with anti-overflow function |
| CN114506989B (en) * | 2022-03-18 | 2023-10-20 | 苏州市职业大学 | High-dryness sludge extrusion device with anti-overflow function |
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