Feeding treatment device for tubular wall-breaking water reduction

Abstract

The utility model relates to the field of sludge treatment, in particular to a feed treatment device for tubular wall breaking water reduction, which comprises a tank body, the tank body comprises a shell and an inner cylinder arranged on the inner side of the shell, a filter cavity is formed between the shell and the inner cylinder, a sludge cavity is formed on the inner side of the inner cylinder, and a feed port is formed on the top of the sludge cavity of the tank body. A slurry outlet pipe is formed at the bottom of the sludge cavity of the tank body; the stirring piece is arranged at the lower section of the sludge cavity; the drain pipe is connected to the lower section of the filter cavity; wherein the inner cylinder is divided into an upper cylinder section and a lower cylinder section from top to bottom, and the upper cylinder section and the lower cylinder section are arranged in such a way that the filtered water passing capacity of the upper cylinder section is greater than that of the lower cylinder section. According to the utility model, by utilizing the difference of the filtering water passing capacity of the upper cylinder section and the lower cylinder section, the flowability of sludge can be kept when water is washed to replace soluble phosphorus-containing substances for rapid drainage and the sludge is discharged outwards, so that the problems existing in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of sludge treatment, in particular to a feed treatment device for tubular wall breaking and water reduction. Background Art

[0002] During the sludge dewatering treatment, phosphorus recovery and dewatering filtration are key links. Among them, phosphorus recovery in sludge is mostly achieved through anaerobic digestion, water-soluble replacement and other treatment methods, which convert the phosphorus in the sludge into soluble phosphorus-containing substances soluble in water. After the water in the sludge is passed into the phosphorus recovery tank, the phosphorus-containing substances are crystallized and precipitated by adding reagents to the phosphorus recovery tank to produce struvite reaction, so as to achieve the purpose of phosphorus recovery. In this process, the sludge is dehydrated at the same time.

[0003] At present, in order to replace the soluble phosphorus in the sludge with water, the filtration and washing are repeatedly switched in the filter press to reduce the phosphorus content in the sludge after filtration. In this way, the filter press takes a long time and consumes a lot of energy in repeated filtration.

[0004] The biomass cells and mud cores in the sludge contain a large amount of bound water, and the filter press has limited effect on filtering out the bound water. Therefore, some existing technologies use a high-voltage AC pulse sludge decomposition device such as the one disclosed in Application No. 201520604862.5 to decompose the sludge, and then pass the sludge into a filter press for filter press after the sludge is electrolytically broken. The existing tubular electric wall breaking technology sets electrodes in the pipeline through which the sludge flows, and generates AC pulse electricity through the electrodes to cause the biomass cells and mud cores to break and release bound water. For this type of tubular wall breaking technology, the presence of lumps and air bags in the sludge has a greater impact on the wall breaking effect.

[0005] Based on the above problems, the applicant has developed a tubular wall-breaking and water-reducing feed processing device, which specifically includes a water washing tank with a water-permeable inner cylinder inside. After the sludge is filled into the inner cylinder, water is introduced to wash and replace the soluble phosphorus-containing substances in the sludge, and then the water is discharged. At the same time, stirring is performed in the inner cylinder to promote the breaking up of sludge clumps and destruction of bubbles.

[0006] Among them, the applicant found that when the water permeability of the inner cylinder is too strong, when the water washing tank is drained out, the water content of the sludge measured in the inner cylinder is too low, which leads to poor fluidity of the sludge discharged outward, affecting the fluidity of the sludge in pipeline transportation. When the water permeability of the inner cylinder is weak, the water washing replacement efficiency of the total soluble phosphorus in the sludge is affected. Utility Model Content

[0007] In order to solve the above-mentioned technical problems, the utility model provides a feed processing device for tubular wall breaking and water reduction, which can utilize the difference in water filtration capacity between the upper and lower barrel sections to quickly drain water during water washing and replacement of soluble phosphorus-containing substances, and can maintain the fluidity of the sludge when discharging the sludge to the outside, thereby effectively solving the problems existing in the prior art.

[0008] In order to solve the above problems, the utility model provides a feed processing device for tubular wall-breaking and water-reducing, comprising: a tank body, the tank body comprising an outer shell and an inner cylinder arranged on the inner side of the outer shell, a filter chamber is formed between the outer shell and the inner cylinder, a sludge chamber is formed on the inner side of the inner cylinder, the tank body is provided with a feed port at the top of the sludge chamber, and the tank body is provided with a slurry discharge pipe at the bottom of the sludge chamber; a stirring member, arranged in the lower section of the sludge chamber; a drain pipe, connected to the lower section of the filter chamber; wherein the inner cylinder is divided into an upper cylinder section and a lower cylinder section from top to bottom, and the upper cylinder section and the lower cylinder section are arranged so that the water filtering capacity of the upper cylinder section is greater than that of the lower cylinder section.

[0009] Furthermore, the inner cylinder comprises a rigid cylinder body and an upper filter cloth covering the surface of the upper cylinder section, and the upper cylinder section is configured to be hollow.

[0010] Furthermore, the inner cylinder includes a lower filter cloth covering the lower cylinder section, the lower cylinder section is configured to be hollow, and the water filtering capacity of the upper filter cloth is greater than the water filtering capacity of the lower filter section.

[0011] Furthermore, the lower edge of the upper filter cloth and the upper edge of the lower filter cloth are arranged to overlap and are fixed to the cylinder body by rivets.

[0012] Furthermore, the feed processing device also includes a fixing plate installed on the lower edge of the lower filter cloth, the lower edge of the fixing plate extends to the bottom wall of the outer shell, the fixing plate is connected to the cylinder body and clamps the lower filter cloth with the cylinder body; the fixing plate is provided with an openable and closable slag discharge door, the lower cylinder section is provided with a slag discharge notch corresponding to the position of the slag discharge door, and the slag discharge door can be directly connected to the slag discharge notch.

[0013] Furthermore, the fixing plate is provided with a through hole at the position of the slag discharge door, and the slag discharge door comprises a door panel installed in the through hole, and the upper end of the door panel is connected to the fixing plate through a rubber sheet.

[0014] Furthermore, the bottom wall of the shell extends obliquely downward from the outside to the inside at the position of the fixing plate.

[0015] Furthermore, the drainage pipe is provided with a delivery pump, the drainage pipe is communicated with the top of the mud chamber, and a regulating valve is provided between the drainage pipe and the top of the mud chamber.

[0016] Furthermore, the feed processing device also includes a water inlet pipe arranged on the top of the shell, the drain pipe is connected to the water inlet pipe, and the regulating valve is installed on the part of the water inlet pipe between the shell and the drain pipe.

[0017] Furthermore, the height of the upper barrel section is greater than the height of the lower barrel section.

[0018] The beneficial effect of the utility model is that it can utilize the difference in water filtering capacity between the upper cylinder section and the lower cylinder section to quickly drain water during water washing and replacement of soluble phosphorus-containing substances, and can maintain the fluidity of the sludge when discharging the sludge externally, thereby effectively solving the problems existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1 It is a schematic side sectional structure diagram of an embodiment of the utility model.

[0021] Figure 2 for Figure 1 A schematic diagram of the local enlarged structure at A in the illustrated embodiment.

[0022] Among them: 1. tank body; 101. outer shell; 102. inner cylinder; 2. filter chamber; 3. sludge chamber; 4. slurry discharge pipe; 5. stirring element; 6. drainage pipe; 7. rigid cylinder; 8. upper filter cloth; 9. lower filter cloth; 10. fixed plate; 11. slag discharge door; 12. slag discharge notch; 13. door panel; 14. delivery pump; 15. regulating valve; 16. water inlet pipe. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in combination with the accompanying drawings by way of examples.

[0024] It should be noted that many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0025] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through an intermediate structure, but are connected to form a whole only through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0028] In the present utility model, if Figure 1-2 As shown, a feed processing device for tubular wall breaking and water reduction is provided, comprising: a tank body 1, the tank body 1 comprising an outer shell 101 and an inner cylinder 102 arranged inside the outer shell 101, a filter chamber 2 is formed between the outer shell 101 and the inner cylinder 102, a sludge chamber 3 is formed inside the inner cylinder 102, the tank body 1 is formed with a feed port at the top of the sludge chamber 3, and the tank body 1 is formed with a slurry outlet pipe 4 at the bottom of the sludge chamber 3; a stirring member 5, arranged at the lower section of the sludge chamber 3;

[0029] The drainage pipe 6 is connected to the lower section of the filter chamber 2; wherein the inner cylinder 102 is divided into an upper cylinder section and a lower cylinder section from top to bottom, and the upper cylinder section and the lower cylinder section are arranged so that the water filtering capacity of the upper cylinder section is greater than that of the lower cylinder section.

[0030] When the feed processing device of the utility model is in use, the sludge to be processed enters the mud chamber from the feed port. At this time, water can be introduced into the tank body 1, and the sludge in the mud chamber is stirred by the stirring member 5, so that the sludge in the sludge chamber 3 can be diluted and stirred. In this process, the lumps and air bags in the sludge are gradually destroyed, and at the same time, the soluble phosphorus-containing substances in the sludge are gradually dissolved in the water.

[0031] Part of the water is filtered by the inner cylinder 102 and flows into the filter chamber 2. At this time, the water in the filter chamber 2 is introduced into the phosphorus recovery tank through the drain pipe 6 for phosphorus recovery, and the soluble phosphorus in the sludge in the sludge chamber 3 is reduced. In this way, when the filter press is filtering the sludge, the number of times the sludge is washed can be reduced, the occupation time of the filter press is reduced, and the use efficiency of the filter press is improved.

[0032] Among them, by making the water filtering capacity of the lower barrel section smaller than that of the upper barrel section, when the water is discharged to the outside through the drain pipe 6, the sludge located in the upper barrel section gradually drains quickly to the filter chamber 2 to complete the rapid discharge of soluble phosphorus-containing substances, and the tank body 1 repeatedly enters and drains water to complete the replacement of soluble phosphorus-containing substances. When the sludge needs to be discharged from the slurry discharge pipe 4, it is necessary to discharge part of the water in the tank body 1 in advance. When the water is discharged to the outside through the drain pipe 6, the sludge material level in the inner barrel 102 is continuously reduced, and the material level in the sludge chamber 3 is gradually reduced. The sludge in the lower barrel section is drained slowly or not drained, and a certain amount of water is retained in the sludge in the lower barrel section, so as to increase the water content of the sludge in the lower barrel section and improve the fluidity of the sludge at the lower barrel section, so that it is easier to slurry out when the sludge is discharged out through the slurry discharge pipe 4. In some embodiments, in order to maintain the fluidity of the sludge in the lower barrel section, the stirring member 5 can be continuously stirred when the sludge is discharged to promote the relative balance of the water content of the sludge in the lower barrel section and the more stable fluidity. In some working conditions, after a certain amount of material is discharged, a certain amount of water may be added into the sludge chamber 3 to increase the fluidity of the sludge.

[0033] At the same time, by making the water filtering capacity of the lower cylinder section smaller than that of the upper cylinder section, when some water remains in the filter chamber 2, when the sludge is discharged outward, the water in the filter chamber 2 can be reduced from entering the lower cylinder section, thereby preventing the sludge in the lower cylinder section from being excessively wet.

[0034] In the illustrated embodiment, for further specific description of the present invention, as shown in the figure, the inner cylinder 102 includes a rigid cylinder body 7 and an upper filter cloth 8 covering the surface of the upper cylinder section, and the upper cylinder section is configured to be hollow.

[0035] In this way, the cylinder can be used as a support to finely filter the sludge through the filter cloth to reduce the sludge content entering the filter chamber 2.

[0036] In the illustrated embodiment, to be more specific, the inner cylinder 102 includes a lower filter cloth 9 covering the lower cylinder section, the lower cylinder section is configured to be hollow, and the water filtering capacity of the upper filter cloth 8 is greater than the water filtering capacity of the lower filter section. As shown in the figure, the upper cylinder section and the lower cylinder section both have water filtering capacity, so that when water is passed to stir, wash and replace the sludge in the sludge chamber 3, the soluble phosphorus-containing substances are promoted to dissolve in water and enter the filter chamber 2.

[0037] The upper filter cloth 8 preferably uses a filter cloth with a mesh size of 80-150, and the lower filter cloth 9 preferably uses a filter cloth with a mesh size of 200-350.

[0038] Alternatively, in an alternative embodiment, the lower barrel section may also be made of a material with zero water permeability.

[0039] In a preferred embodiment, the lower cylinder section can also be set as a non-water-permeable lower cylinder section with zero water filtering capacity.

[0040] In the illustrated embodiment, a further optimized arrangement for the installation of the upper filter cloth 8 and the lower filter cloth 9 in the present invention is that the lower edge of the upper filter cloth 8 and the upper edge of the lower filter cloth 9 are arranged to overlap and are fixed to the cylinder by rivets.

[0041] As shown in the figure, the upper filter cloth 8 and the lower filter cloth 9 can be fixed simultaneously by a row of rivets.

[0042] In the illustrated embodiment, a further optimized arrangement is that the feed processing device also includes a fixing plate 10 installed on the lower edge of the lower filter cloth 9, the lower edge of the fixing plate 10 extends to the bottom wall of the outer shell 101, the fixing plate 10 is connected to the cylinder and clamps the lower filter cloth 9 with the cylinder; the fixing plate 10 is provided with an openable and closable slag discharge door 11, the lower cylinder section is provided with a slag discharge notch 12 corresponding to the position of the slag discharge door 11, and the slag discharge door 11 can be directly connected to the slag discharge notch 12.

[0043] As shown in the figure, by providing a slag discharge door 11, when there is too much sludge deposited in the filter chamber 2, the sludge discharge door 11 can be opened after the sludge in the sludge chamber 3 is discharged to promote the sludge in the filter chamber 2 to flow into the sludge chamber 3. At this time, water can be passed into the tank body 1 to promote the flow of sludge in the filter chamber 2. After the sludge in the filter chamber 2 is discharged, the slag discharge door 11 can be closed.

[0044] In the illustrated embodiment, more specifically, the fixed plate 10 is provided with a through hole at the position of the slag discharge door 11, and the slag discharge door 11 includes a door panel 13 installed in the through hole, and the upper end of the door panel 13 is connected to the fixed plate 10 through a rubber sheet. As shown in the figure, after the sludge in the sludge chamber 3 is discharged, the sludge and water in the filter chamber 2 can flow into the sludge chamber 3, so that the sludge in the filter chamber 2 can flow to the sludge chamber 3. When the sludge falls from the top of the sludge chamber 3 again, the fixed plate 10 is closed again under the pressure of the sludge in the sludge chamber 3.

[0045] In the illustrated embodiment, a further optimized setting of the utility model is that the bottom wall of the shell 101 extends downwardly from the outside to the inside at the position of the fixed plate 10. As shown in the figure, a circular chamfer is set at the bottom of the tank body 1, and the inner cylinder 102 is installed at the chamfer position, so that the position of the fixed plate 10 extends in an arc shape, thereby promoting the residual sludge in the filter chamber 2 to flow to the sludge chamber 3 through the door plate 13.

[0046] In some embodiments, as shown in the figure, the drain pipe 6 can also be reversely fed with water to promote the sludge deposited in the filter chamber 2 to be discharged from the door panel 13 to the sludge chamber 3. By fixing with a rubber sheet, the rubber sheet is stable in use and not easy to rust. When sludge enters the sludge chamber 3 for water washing and replacement, the sludge in the sludge chamber 3 can push the door panel 13 to close. After the sludge in the sludge chamber 3 is discharged, the sludge or mud in the filter chamber 2 can push the door panel 13 to open the door panel 13. After the sludge deposited in the filter chamber 2 is discharged, the door panel 13 is closed under the action of the deadweight of the door panel 13 and the elastic force of the rubber sheet.

[0047] In the illustrated embodiment, a further optimized setting is that the drain pipe 6 is provided with a delivery pump 14, the drain pipe 6 is connected to the top of the mud chamber, and a regulating valve 15 is provided between the drain pipe and the top of the mud chamber. As shown in the figure, by providing the delivery pump 14, during the process of water injection and stirring of the sludge in the sludge chamber 3, water can be pumped through the delivery pump 14, and the regulating valve 15 can be opened to allow the water in the filter chamber 2 to circulate to the sludge chamber 3, so that part of the sludge particles in the filter chamber 2 can be pumped back to the sludge chamber 3 to prevent the filter chamber 2 from being blocked. It can also promote the flow of water in the two chambers to improve the fusion replacement of soluble phosphorus-containing substances.

[0048] After the sludge hydrolysis and replacement in the sludge chamber 3 is completed, when it is necessary to discharge the water in the filter chamber 2 to the phosphorus recovery tank, the regulating valve 15 can be closed and the pipeline between the drain pipe 6 and the phosphorus recovery tank can be opened.

[0049] In the illustrated embodiment, for the utility model, the pipeline setting of the drain pipe 6, to be more specific, the feed processing device also includes a water inlet pipe 16 arranged on the top of the shell 101, the drain pipe 6 is connected to the water inlet pipe 16, and the regulating valve 15 is installed in the part of the water inlet pipe 16 between the shell 101 and the drain pipe 6.

[0050] As shown in the figure, by connecting the water inlet pipe 16 with the drain pipe 6, when the filter chamber 2 needs to be cleaned, water can be passed from the drain pipe 6 to the filter chamber 2 through the water inlet pipe 16 to promote the discharge of sludge in the filter chamber 2 from the slag discharge door 11.

[0051] In the illustrated embodiment, for the structure of the present utility model, to be more specific, as shown in the figure, the height of the upper barrel section is greater than the height of the lower barrel section.

[0052] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0053] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A feed processing device for tubular wall breaking and water reduction, characterized in that: include: A tank body, the tank body comprising an outer shell and an inner cylinder arranged inside the outer shell, a filter cavity is formed between the outer shell and the inner cylinder, a sludge cavity is formed inside the inner cylinder, a feed inlet is formed at the top of the sludge cavity, and a slurry outlet pipe is formed at the bottom of the sludge cavity; A stirring member, arranged at the lower section of the sludge chamber; A drainage pipe connected to the lower section of the filter chamber; The inner cylinder is divided into an upper cylinder section and a lower cylinder section from top to bottom, and the upper cylinder section and the lower cylinder section are arranged so that the water filtering capacity of the upper cylinder section is greater than that of the lower cylinder section.

2. The feed processing device for tubular wall breaking and water reduction according to claim 1, characterized in that: The inner cylinder comprises a rigid cylinder body and an upper filter cloth covering the surface of the upper cylinder section, and the upper cylinder section is arranged to be hollow.

3. The feed processing device for tubular wall breaking and water reduction according to claim 2, characterized in that: The inner cylinder includes a lower filter cloth covering the lower cylinder section, the lower cylinder section is configured to be hollow, and the water filtering capacity of the upper filter cloth is greater than the water filtering capacity of the lower filter cloth.

4. The feed processing device for tubular wall breaking and water reduction according to claim 3 is characterized in that: The lower edge of the upper filter cloth and the upper edge of the lower filter cloth are arranged to overlap and are fixed to the cylinder body by rivets.

5. The feed processing device for tubular wall breaking and water reduction according to claim 3, characterized in that: The feed processing device also includes a fixing plate installed at the lower edge of the lower filter cloth, the lower edge of the fixing plate extends to the bottom wall of the shell, the fixing plate is connected to the cylinder and clamps and fixes the lower filter cloth with the cylinder; The fixed plate is provided with an openable and closable slag discharge door, and the lower cylinder section is provided with a slag discharge notch corresponding to the position of the slag discharge door, and the slag discharge door can be directly connected to the slag discharge notch.

6. The feed processing device for tubular wall breaking and water reduction according to claim 5, characterized in that: The fixing plate is provided with a through hole at the position of the slag discharge door, and the slag discharge door comprises a door plate installed in the through hole, and the upper end of the door plate is connected to the fixing plate through a rubber sheet.

7. The feed processing device for tubular wall breaking and water reduction according to claim 6, characterized in that: The bottom wall of the housing extends obliquely downward from outside to inside at the position of the fixing plate.

8. The feed processing device for tubular wall breaking and water reduction according to claim 1, characterized in that: The drainage pipe is provided with a delivery pump, the drainage pipe is communicated with the top of the mud chamber, and a regulating valve is provided between the drainage pipe and the top of the mud chamber.

9. The feed processing device for tubular wall breaking and water reduction according to claim 8, characterized in that: The feed processing device also includes a water inlet pipe arranged on the top of the shell, the drain pipe is connected to the water inlet pipe, and the regulating valve is installed in the part of the water inlet pipe between the shell and the drain pipe.

10. The feed processing device for tubular wall breaking and water reduction according to claim 9, characterized in that: The height of the upper barrel section is greater than the height of the lower barrel section.

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