CN112479549B - Filter press drying equipment that uses hot air to penetrate sludge and heat - Google Patents

Abstract

The invention relates to a filter press drying equipment that utilizes hot air to penetrate through sludge to heat. It includes a plurality of first filter plates and second filter plates that overlap and move forward and backward, and the front and rear of each first filter plate and second filter plate respectively There are filter chambers and sludge inlets, one side of the two filter chambers of each first filter plate is connected with an external hot gas pipeline, and the opposite side of the two filter chambers of each second filter plate is connected with an external exhaust pipeline , use the hot gas to enter the filter chamber side of each first filter plate through the hot gas pipeline, so that the hot gas can fully penetrate and contact the heated sludge toward the second filter plate, and then from the opposite side of the filter chamber of each second filter plate to the exhaust The gas pipeline is discharged to the outside, so that the sludge can be dehydrated, so as to improve the dryness of the sludge, increase the drying efficiency of the filter press, and reduce the operating cost of the sludge treatment.

Description

Filter press drying equipment that uses hot air to penetrate sludge and heat

technical field

The invention relates to a filter-press drying equipment, in particular to a filter-press drying equipment which utilizes hot air to penetrate through sludge and heat.

Background technique

At present, filter press units for sludge and various other filter materials are placed on the track of the machine with multiple sets of filter units that can be moved and displaced separately and overlapped together. Each filter unit has filter chambers on both sides and communication For the sludge inlet, the filter chambers on both sides are respectively covered with filter cloths, and the filter cloths on both sides are connected through the sludge inlet.

In the actual process of filtering sludge, all the filter units overlap and lean against the filter cloths, and the outer circumferences of the two filter cloths are closed. At the same time, the water-containing sludge is pumped and sent to the sludge inlet of the filter unit and each filter cloth by using a pump. Inside, and continue to squeeze, so that the sewage flows out through the filter cloth and the drainage hole, and the sludge is wrapped in the filter chamber by the filter cloth to achieve the purpose of extrusion dehydration. However, this simple extrusion dehydration method can only achieve sludge dryness with a moisture content of 60-86%, which cannot effectively reduce the volume of sludge and occupy space, and the subsequent transportation and reprocessing costs are expensive.

In order to improve the defects of the above-mentioned simple extrusion dehydration method, a hot gas heating structure has been added to the inside of the filter unit of the filter press to gasify the moisture contained in the sludge into water vapor to improve the dryness of the sludge. However, the hot gas heating structure inside the filter press unit of this kind of filter press needs to use a lot of heat energy, and the hot gas cannot fully penetrate and contact the heated sludge, which affects the sludge drying efficiency and relatively increases the cost of the filter press operation. Waste of thermal energy resources. Therefore, how to solve the above-mentioned problems is the subject that relevant practitioners in this industry are eager to study.

Contents of the invention

The main purpose of the present invention is that each first filter plate uses hot gas to penetrate and contact the sludge in an all-round way towards the second filter plate for heating, so that the sludge can be dehydrated reliably, so as to improve the dryness of the sludge and further increase the drying efficiency of the filter press , and reduce equipment costs and sludge treatment costs.

In order to achieve the above-mentioned purpose, the present invention utilizes the filter press drying equipment heated by hot air to penetrate through the sludge, which includes a plurality of first filter plates and second filter plates opposite in the same direction, each of the first filter plate and the second filter plate The front and back of the first filter plate and the second filter plate are respectively provided with filter chambers, and each of the filter chambers has the same side and the opposite side, and each of the filter chambers is provided with A plurality of diversion ditches communicating with each other, each filter chamber is provided with a sludge inlet communicating front and back, so as to communicate with the external sludge slurry pipeline, so that the sludge slurry is filled in each of the first filter plate and the second filter plate Each of the filter chambers of each of the first filter plates is squeezed and dehydrated to become sludge; one side of the two filter chambers of each of the first filter plates is connected with an external hot gas pipeline, and the two filter chambers of each of the second filter plates are opposite to the other The side is connected with an external exhaust pipeline, and the hot gas pipeline is connected with a hot gas source to supply hot gas through the hot gas pipeline into the two filter chamber sides of each of the first filter plates and each of the guide grooves, so that the hot gas Facing the second filter plate, the sludge is fully penetrated and heated, and the hot gas exchanges heat with the sludge to become warm waste gas, and then the warm waste gas enters the diversion grooves of the two filter chambers of each second filter plate, Then the warm waste gas is discharged through the other side of the two filter chambers of each of the second filter plates and the exhaust pipeline.

The aforementioned filter press drying equipment that uses hot air to penetrate through the sludge to heat, wherein one side of the two filter chambers of each first filter plate is connected with hot air holes, and the hot air pipelines are respectively connected to each of the hot air holes; The other sides of the two filter chambers of the second filter plate are communicated with exhaust holes, and the exhaust pipelines are respectively connected to the exhaust holes.

The aforementioned filter press drying equipment that uses hot air to penetrate through the sludge to heat, wherein the two sides of each first filter plate and the two sides of the second filter plate are respectively provided with drainage holes that pass through front and back, and the holes on each side of the first filter plate The sewage drainage hole is connected to one side corresponding to the two filter chambers, and the sewage drainage hole on the opposite side of each second filter plate is connected to the other side corresponding to the two filter chambers.

The aforementioned filter press drying equipment that uses hot air to penetrate through the sludge to heat, wherein the drainage holes on the side of the first filter plate and the second filter plate are connected to the outside with a first sewage pipeline and a sewage control valve. The sewage hole on the other side of the first filter plate and the second filter plate is connected with a second sewage pipeline to the outside. Pass through the drainage holes on one side of each of the first filter plate and the second filter plate, and the hot air enters the two filter holes of each first filter plate through the drainage hole on one side of each first filter plate One side of the chamber and each of the diversion grooves.

The aforementioned filter press drying equipment that uses hot air to penetrate through the sludge to heat, wherein the two filter chambers of the first filter plate and the second filter plate are respectively covered with membranes, and the diversion grooves of each of the two filter chambers It is formed on the surface of the two diaphragms, and an external air pressure pipeline is connected between each of the two filter chambers. The air pressure pipeline is connected with a compressed air source and a control valve, and the compressed air source outputs compressed air to each of the two filter chambers. Between the two diaphragms of the chamber, the sludge slurry inside the two filter chambers is stretched and expanded in the past.

Description of drawings

Fig. 1 is a configuration diagram of the filter press drying equipment of the present invention.

Fig. 2 is a cross-sectional view of driving the filter plates side by side in the filter press drying equipment of the present invention.

Fig. 3 is a perspective view of the first filter plate of the filter press drying equipment of the present invention.

Fig. 4 is a perspective view of the second filter plate of the filter press drying equipment of the present invention.

Fig. 5 is a cross-sectional view of squeezing the sludge slurry by the filter press drying equipment of the present invention.

Fig. 6 is a cross-sectional view of the pressure-stretched diaphragm extruding the sludge slurry by the filter-press drying equipment of the present invention.

Fig. 7 is a sectional view of hot air drying sludge by the filter press drying equipment of the present invention.

Explanation of reference signs

1. Rack 4. Sludge slurry pipeline

11. Fixing seat 5. The first sewage pipeline

12. Movable seat 51. Sewage control valve

13. Hydraulic cylinder 52. The second sewage pipeline

2. The first filter plate 6. Air pressure pipeline

20. Second filter plate 61. Compressed air source

21. Plate body 62. Control valve

22. Filter chamber 63. Control valve

221. Filter chamber hole 7. Hot gas pipeline

222. Filter chamber hole 71. Hot air source

23. Diaphragm 72. Hot gas control valve

231. Diversion trench 73. Hot gas control valve

24. Support 8. Exhaust pipeline

25. Sludge inlet 9. Sludge slurry

26. Sewage holes 91. Sludge

261. Sewage hole

27. Inlet hot air hole

28. Vent

29. Air pressure hole

3. Filter cloth.

Detailed ways

Relevant present invention is to achieve above-mentioned purpose, adopts technical means and effect thereof, enumerates feasible embodiment hereby, and cooperates accompanying drawing to illustrate as follows:

First of all, please refer to Fig. 1 to Fig. 5, it can be clearly seen from the figures that the filter press drying equipment of the present invention has a plurality of first filter plates 2 and second filter plates straddling the rails on both sides of the frame 1. plate 20, each of the first filter plate 2, the second filter plate 20 and the filter cloth 3 are overlapped and leaned against in a sequentially controlled lateral displacement using a pulling fixture, and the sludge slurry pipeline 4 and the first sewage pipeline 5 are externally connected , the second sewage pipeline 52, the air pressure pipeline 6, the hot gas pipeline 7 and the exhaust pipeline 8, and then cooperate with the fixed seat 11, the movable seat 12 and the oil pressure cylinder 13 to exert force and force the positioning, wherein:

The first filter plates 2 and the second filter plates 20 face each other in the same direction, and the first filter plates 2 and the second filter plates 20 overlap and move forward and backward in sequence, and each of the first filter plates 2 and the second filter plates 20 A filter chamber 22 and a filter cloth 3 are respectively provided at the front and back, and supports 24 are fixed on both sides. Each filter chamber 22 has the same side and the opposite side, and each filter chamber 22 is provided with a plurality of diversion grooves 231 communicating with each other, and each plate body 21 is covered with a diaphragm in the two filter chambers 22. 23, and the surroundings of the diaphragm 23 are fixed and positioned with the plate body 21, and the diversion grooves 231 of the two filter chambers 22 are formed on the surfaces of the two diaphragms 23. Each of the two filter chambers 22 is provided with a sludge inlet 25 communicating with the front and back, and the two sides of each first filter plate 2 and the second filter plate 20 are respectively provided with drainage holes 26 and 261 through which the front and rear are connected. The sewage hole 26 on the side is connected to one side of the corresponding two filter chambers 22 via the filter chamber hole 221, while the sewage hole 261 on the other side of the first filter plate 2 is not connected to the filter chamber hole 222 on the other side of the filter chamber 22. The second filter plate 20 is connected to the other side of the corresponding two filter chambers 22 through the filter chamber hole 222, and the second filter plate 20 is not connected to the sewage hole 26 on one side of the filter chamber. 22 filter chamber holes 221 on one side. One side of the two filter chambers 22 of each first filter plate 2 is communicated with the hot air hole 27 via the filter chamber hole 221, and the opposite side of the two filter chambers 22 of each second filter plate 20 is communicated with the filter chamber hole 222 with the Air vent 28, and the first filter plate 2 and the second filter plate 20 are provided with an air pressure hole 29 between each plate body 21 and the two diaphragms 23 of the two filter chambers 22 .

The sludge slurry pipeline 4 communicates with the sludge inlet 25 of each of the first filter plate 2 and the second filter plate 20 .

The first sewage pipeline 5 and the second sewage pipeline 52 are connected to each of the first filter plate 2 and the second filter plate 20, so that the sewage holes 26 on one side of each of the first filter plate 2 and the second filter plate 20 go outward. The first sewage pipeline 5 is connected to the sewage control valve 51 , and the sewage holes 261 on the other sides of the first filter plate 2 and the second filter plate 20 are connected to the second sewage pipeline 52 outside.

The air pressure pipeline 6 is connected with a compressed air source 61 and control valves 62 and 63 , and the compressed air is input into the air pressure hole 29 connected between each plate body 21 and the filter chamber 22 .

The hot gas pipeline 7 is connected with a hot gas source 71 and a hot gas control valve 72, so as to be connected to the hot air holes 27 of each first filter plate 2 on one side of the two filter chambers 22, so that the hot gas enters the two filters of each first filter plate 2. In room 22. And the hot gas pipeline 7 can be provided with a hot gas control valve 73 to be connected to the first sewage pipeline 5, so that the hot gas can pass through the sewage holes 26 on one side of each first filter plate 2 and the second filter plate 20 from the outside to the inside, And close the sewage control valve 51, so that the hot air passes through the sewage hole 26 and the filter chamber hole 221 on one side of the first filter plate 2 to enter the two filter chambers 22 sides of each first filter plate 2 and each diversion ditch. 231.

The exhaust pipeline 8 is connected to the exhaust holes 28 of the second filter plates 20 on the other side of the two filter chambers 22 .

When the filter press drying equipment of the present invention is in actual operation, please refer to FIGS. The filter plate 2 and the second filter plate 20 overlap and lean against the filter cloth 3 , and the outer peripheries of two adjacent filter cloths 3 are closed. Please refer to Fig. 1 and shown in Fig. 5, utilize sludge slurry pipeline 4 to import sludge slurry 9 into each sludge inlet 25 of each first filter plate 2 and second filter plate 20, and continuously promote sludge slurry 9 to be full of Each filter chamber 22 is squeezed and dewatered, so that the water content of the sludge slurry 9 is gradually reduced, and the sewage passes through the filter cloth 3, the filter chamber holes 221, 222, the drainage holes 26, 261, the first sewage pipeline 5, the second The sewage pipeline 52 and the sewage control valve 51 flow out, while the sludge 91 is wrapped in the filter chamber 22 by the filter cloth 3 . When the filter press drying equipment continues to extrude the sludge slurry 9 to discharge most of the sewage, please refer to Fig. 1 and Fig. 6, use the air pressure pipeline 6 to input the compressed air through the control valve 62 into each plate body 21 respectively on the two diaphragms The air pressure hole 29 between the 23, in the past, each two diaphragms 23 were expanded and squeezed to squeeze the sludge slurry 9 and the sludge 91 inside the two filter chambers 22, so that the sludge 91 is evenly distributed in the filter chamber 22, so as to further Easy to continue with hot air drying.

During the actual operation of the filter press drying equipment of the present invention, the hot gas pipeline 7 is started in good time, and the sewage control valve 51 of the first sewage pipeline 5 is closed, as shown in Figures 1 and 7, the hot gas continues to pass through the hot gas pipeline 7 Enter the heat inlet air hole 27 of each first filter plate 2, one side of the two filter chambers 22 and each diversion groove 231, so that the hot gas, as shown by the arrow in Figure 7, is fully penetrated and contacted towards each second filter plate 20 sludge 91, and the hot gas exchanges heat with the sludge 91 to become warm waste gas, and then the warm waste gas enters the diversion grooves 231 of the two filter chambers 22 of each second filter plate 20, and then passes through the two filter chambers 231 of each second filter plate 20. The exhaust hole 28 on the other side of the chamber 22 and the exhaust pipeline 8 discharge warm waste gas to the outside, so that the sludge 91 can be dehydrated into a sludge cake state, so as to improve the dryness of the sludge 91 and increase the drying efficiency of the filter press. And reduce equipment costs and sludge treatment operating costs. Finally, the filter press drying equipment opens the movable seat 12 (refer to Figure 1), and then pulls and opens each first filter plate 2, second filter plate 20 and filter cloth 3 one by one with a pulling fixture, so that each first filter plate 2 and the second filter plate The two filter plates 20 are separated and displaced sequentially to discharge the dehydrated sludge 91 from each filter chamber 22 .

The above-mentioned embodiments are only used to illustrate the present invention for convenience, and are not intended to be limiting. Without departing from the scope of the present invention, various simple changes and modifications that can be made by those skilled in the art should still be included in the rights of the present invention. requirements book.

Claims (2)

1. A filter press drying equipment that uses hot air to penetrate through the sludge to heat, including a plurality of first filter plates and second filter plates opposite in the same direction, and each of the first filter plates and the second filter plates are in sequence The first filter plate and the second filter plate are respectively provided with filter chambers at the front and back, each of the filter chambers has the same side and the opposite side, and each of the first filter plate and the second filter plate Each of the two filter chambers of the plate is covered with a diaphragm, and each of the diaphragm surfaces is provided with a plurality of diversion grooves communicating with each other, and an external air pressure pipeline is connected between each of the two filter chambers. The pipeline is connected with a compressed air source and a control valve, and each filter chamber is provided with a sludge inlet that communicates front and rear to correspond to the external sludge slurry pipeline, so that the sludge slurry is filled in each of the first filter plate and the second filter plate. Each of the filter chambers of the filter plate is extruded and dehydrated; each side of the first filter plate and the second filter plate are respectively provided with drainage holes through the front and back, and the drainage holes on each side of the first filter plate Connected to one side of the two filter chambers, the drainage hole on the opposite side of the second filter plate is connected to the other side of the two filter chambers, and connected to the two filter chambers of the first filter plate There is an external hot gas pipeline, and the opposite side of the two filter chambers of each second filter plate is connected with an external exhaust pipeline, and the hot gas pipeline is connected with a hot gas source, and each of the first filter plate and the second filter plate The sewage discharge hole on one side of the second filter plate is connected with a first sewage discharge pipeline and a sewage control valve, and each of the first filter plate and the sewage discharge hole on the other side of the second filter plate is connected with a second sewage discharge hole. Water pipeline, the hot gas pipeline is provided with a hot gas control valve connected to the first sewage pipeline; the air pressure pipeline uses the compressed air source to output compressed air to between the two diaphragms of the two filter chambers, and the external support Each of the two membranes expands and squeezes the sludge slurry inside each of the two filter chambers to dehydrate into sludge; then supply hot air through the hot air pipeline, and close the sewage control valve to allow the hot air to pass from outside to inside Each of the first filter plate and the second filter plate have the drainage holes on one side, and the hot air enters into one of the two filter chambers of each of the first filter plates through the drainage holes on each side of the first filter plate side and each of the diversion grooves of the two membranes, so that the hot gas is fully penetrated and contacted with each of the second filter plates to heat the sludge, and the hot gas exchanges heat with the sludge to become warm waste gas, and then the warm gas Exhaust gas enters the diversion grooves of the two membranes of the two filter chambers of each second filter plate, and then discharges the temperature through the other side of the two filter chambers of each second filter plate and the exhaust pipe. exhaust gas. 2. The filter press drying equipment that uses hot air to penetrate through the sludge to heat according to claim 1, wherein one side of the two filter chambers of each first filter plate is communicated with a hot air hole, and the hot air pipeline is respectively connected to each The heat inlet air hole; the other side of the two filter chambers of each of the second filter plates are communicated with exhaust holes, and the exhaust pipelines are respectively connected to each of the exhaust holes.

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