Waste gas preheating recovery equipment

Abstract

The utility model relates to the technical field of sludge drying, in particular to waste gas preheating and recycling equipment. The waste gas preheating and recycling equipment comprises a machine table; the drying tank is arranged in the machine table, the drying tank comprises an outer container and an inner container filled with sludge, the outer container is fixed in the machine table, the inner container is arranged in the outer container, and a plurality of sieve holes are formed in the outer side of the inner container in the circumferential direction of the outer container in an annular array mode. The drying device has the advantages that the drying assembly is used for drying airflow and removing moisture, so that the airflow does not contain moisture but retains heat, air which does not contain water vapor but has heat flows into the heating box again, drying warm flow continues to be provided for the inner container, the airflow heating time of the heating box is shortened, and the heating efficiency of the heating box is improved. And the warm flow for drying the sludge in the inner container is continuously and circularly provided, so that certain energy consumption is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sludge drying, in particular to waste gas preheating and recovery equipment. Background Art

[0002] With the rapid development of my country's economy and the improvement of people's living standards, the urban sewage treatment industry has developed rapidly, and the amount of sludge generated is also increasing. At present, the main methods of sludge treatment include agricultural use, fuel utilization, incineration and landfill.

[0003] However, during the sludge drying process, the steam generated by the sludge in the sludge dryer is directly discharged into the air without any treatment, causing the impurities carried in the steam to be suspended in the air, affecting the air quality and possibly having an adverse effect on human health. In addition, the heat energy in the steam is not effectively utilized, resulting in energy waste and high energy consumption. Utility Model Content

[0004] The utility model aims at the technical problems existing in the prior art and provides a waste gas preheating and recovery device to solve the problem that the steam generated by the sludge in the sludge dryer during the drying process is directly discharged into the air without any treatment, causing the impurities carried in the steam to be suspended in the air, affecting the air quality and possibly having an adverse effect on human health.

[0005] The utility model solves the above technical problems with the following technical solutions: A waste gas preheating recovery device, comprising:

[0006] Machine;

[0007] A drying tank, the drying tank is arranged in the machine, the drying tank comprises an outer tank and an inner tank containing sludge, the outer tank is fixed in the machine, the inner tank is placed in the outer tank, and a plurality of sieve holes are arranged in an annular array along the circumference of the outer tank;

[0008] A heat flow generating unit for providing warm flow to the inner tank sludge, the heat flow generating unit comprising a heating box, the heating box is located below the drying tank and is connected to the outer tank of the drying tank;

[0009] An outlet pipe, one end of which is connected to the bottom of the outer liner and is used for exhausting the outer liner;

[0010] A liquefaction box, which is connected to the other end of the outlet pipe and is used to liquefy the airflow transported by the outlet pipe, wherein the liquefaction box is located on one side of the heating box and is connected to the heating box;

[0011] A drying component is arranged at the connection between the liquefaction box and the heating box, and is used for drying the airflow entering the heating box.

[0012] The beneficial effects of the utility model are:

[0013] 1) The device introduces the warm current generated by the heat generating part into the inner tank to dry the sludge in the inner tank. After being dried by the warm current, the sludge will generate an airflow containing steam. Subsequently, the airflow containing steam enters the outer tank through the sieve hole, and is then introduced into the liquefaction box through the outlet pipe. After liquefaction, the airflow enters the drying component and then enters the heating box. Before entering the heating box, the airflow is dried by the drying component to remove moisture so that the airflow does not contain moisture but retains heat, so that the gas without water vapor but with heat can flow into the heating box again to continue to provide the inner tank with a drying warm current, thereby reducing the time for the heating box to heat the airflow, and realizing an uninterrupted and cyclic supply of a drying warm current to the sludge in the inner tank, thereby saving a certain amount of energy consumption.

[0014] On the basis of the above technical solution, the present invention can also be improved as follows.

[0015] Furthermore, the heat flow generating part also includes a blower and a guide tube, the blower is located below the outer tank and fixed on the machine platform, and the output end of the blower is connected to one side of the heating box, one end of the guide tube is connected to one side of the heating box, and the other end of the guide tube is connected to one side of the outer tank.

[0016] Furthermore, a heating tube is provided in the heating box.

[0017] The beneficial effect of adopting the above further scheme is that an airflow is generated by the blower. Since the output end of the blower is connected to one side of the heating box, the airflow generated by the blower flows into the heating box with a heating tube. The heating tube is used to increase the temperature of the airflow generated by the blower, and the airflow that has been heated by the heating box is introduced into the inner tank through the guide tube, thereby drying the sludge in the inner tank.

[0018] Furthermore, a bearing plate is fixedly connected between the inner side walls of the liquefaction box, and a condensation plate is fixedly connected to the top of the bearing plate, and the condensation plate is inclined toward the heating box.

[0019] Furthermore, a plurality of through holes are provided inside the supporting plate along a linear array.

[0020] The beneficial effect of adopting the above further scheme is that after the outlet pipe discharges the steam-containing airflow into the liquefaction tank, the airflow passes through the condensation plate for liquefaction, and the small water droplets formed after liquefaction flow along the condensation plate to the supporting plate, and the through holes on the supporting plate can cause the liquefied small water droplets to concentrate at the bottom of the liquefaction tank, which can effectively separate the liquid water and make it gather at the bottom, thereby making it more convenient to collect and process, thereby improving the efficiency and operability of the system.

[0021] Furthermore, a connecting pipe is provided between the heating box and the liquefaction box, and the drying assembly includes a drying plate, which is rotatably connected to the inner wall of the connecting pipe via a rotating shaft, and a torsion spring is provided between the drying plate and the connecting pipe.

[0022] The beneficial effect of adopting the above-mentioned further scheme is that the connecting pipe connects the liquefaction box and the heating box, allowing the liquefied gas to flow to the heating box. By adding a drying plate as a drying component, the residual water vapor can be further removed when the gas flows through the connecting pipe, ensuring that the airflow flowing into the heating box is dry. The drying plate is connected to the inner wall of the connecting pipe by a rotating shaft. The presence of the torsion spring ensures that the drying plate can face the airflow, which helps to expose the surface of the drying plate to the greatest extent for drying processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 It is a schematic diagram of the overall structure of the utility model from another perspective;

[0025] Figure 3 It is a side sectional view of the utility model;

[0026] Figure 4 It is a three-dimensional diagram of the heat flow generating part of the utility model;

[0027] Figure 5 This is a stereoscopic diagram of the heat flow generating part of the utility model from another perspective.

[0028] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0029] 100, machine, 200, drying tank, 201, outer tank, 202, inner tank, 203, sieve hole, 300, heat flow generating part, 310, heating box, 311, heating pipe, 320, guide pipe, 330, blower, 400, outlet pipe, 500, liquefaction box, 501, supporting plate, 502, through hole, 503, condensation plate, 600, drying component, 601, drying plate, 602, torsion spring, 700, connecting pipe. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] With the rapid development of my country's economy and the improvement of people's living standards, the urban sewage treatment industry has developed rapidly, and the amount of sludge generated is also increasing. At present, the main methods of sludge treatment include agricultural use, fuel utilization, incineration and landfill.

[0032] However, during the sludge drying process, the steam generated by the sludge in the sludge dryer during the drying process is directly discharged into the air without any treatment, resulting in impurities carried in the steam suspended in the air, affecting the air quality and possibly having an adverse effect on human health. In addition, the heat energy in the steam is not effectively utilized, resulting in energy waste and high energy consumption. In this regard, the utility model proposes a waste gas preheating recovery device to solve the above problems.

[0033] The utility model provides the following preferred embodiments

[0034] like Figure 1-Figure 5 As shown, a waste gas preheating and recovery device comprises:

[0035] Machine 100;

[0036] A drying tank 200 is arranged in the machine 100. The drying tank 200 comprises an outer tank 201 and an inner tank 202 with sludge therein. The outer tank 201 is fixed in the machine 100, and the inner tank 202 is placed in the outer tank 201. A plurality of sieve holes 203 are arranged in an annular array along the circumference of the outer tank 201 on the outer side of the inner tank 202.

[0037] A heat flow generating unit 300 for providing warm flow to the sludge in the inner tank 202, the heat flow generating unit 300 comprising a heating box 310, the heating box 310 is located below the drying tank 200 and is connected to the outer tank 201 of the drying tank 200;

[0038] An outlet pipe 400, one end of which is connected to the bottom of the outer liner 201, and is used for exhausting the outer liner 201;

[0039] A liquefaction tank 500, which is connected to the other end of the outlet pipe 400 and is used to liquefy the airflow transported by the outlet pipe 400, wherein the liquefaction tank 500 is located on one side of the heating box 310, and the liquefaction tank 500 is connected to the heating box 310;

[0040] A drying component 600, which is disposed at the connection between the liquefaction box 500 and the heating box 310, and is used to dry the airflow entering the heating box 310;

[0041] The sludge in the inner tank 202 is dried by introducing the warm current generated by the heat generating unit into the inner tank 202. After being dried by the warm current, the sludge will generate an airflow containing steam. Subsequently, the airflow containing steam enters the outer tank 201 through the sieve hole 203, and is then introduced into the liquefaction tank 500 through the outlet pipe 400. After being liquefied, the airflow enters the drying component 600 and then enters the heating box 310. Before entering the heating box 310, the airflow is dried by the drying component 600 to remove moisture so that the airflow does not contain moisture but retains heat, so that the gas that does not contain water vapor but has heat can flow into the heating box 310 again to continue to provide the inner tank 202 with a drying warm current, thereby reducing the time for the heating box 310 to heat the airflow, and realizing an uninterrupted and cyclic provision of a drying warm current to the sludge in the inner tank 202, thereby saving a certain amount of energy consumption.

[0042] In this embodiment, Figure 1-Figure 5 As shown, the heat flow generating unit 300 further includes a blower 330 and a guide tube 320. The blower 330 is located below the outer liner 201 and fixed on the machine 100. The output end of the blower 330 is connected to one side of the heating box 310. One end of the guide tube 320 is connected to one side of the heating box 310. The other end of the guide tube 320 is connected to one side of the outer liner 201. A heating tube 311 is provided in the heating box 310.

[0043] An air flow is generated by the blower 330. Since the output end of the blower 330 is connected to one side of the heating box 310, the air flow generated by the blower 330 flows into the heating box 310 with the heating tube 311. The heating tube 311 is used to increase the temperature of the air flow generated by the blower 330, and the air flow that has been heated by the heating box 310 is introduced into the inner tank 202 through the guide tube 320, thereby drying the sludge in the inner tank 202.

[0044] In this embodiment, Figure 1-Figure 5 As shown, a carrier plate 501 is fixedly connected between the inner side walls of the liquefied tank 500, and a condensation plate 503 is fixedly connected to the top of the carrier plate 501, and the condensation plate 503 is inclined toward the heating box 310, and a plurality of through holes 502 are opened in the inner part of the carrier plate 501 along a linear array;

[0045] After the outlet pipe 400 discharges the steam-containing airflow into the liquefaction tank 500, the airflow passes through the condensation plate 503 for liquefaction, and the small water droplets formed after liquefaction flow along the condensation plate 503 to the supporting plate 501. The through holes 502 on the supporting plate 501 can cause the liquefied small water droplets to concentrate at the bottom of the liquefaction tank 500, and can effectively separate the liquid water and make it gather at the bottom, so that it is more convenient to collect and process, thereby improving the efficiency and operability of the system.

[0046] In this embodiment, Figure 1-Figure 5 As shown, a connecting pipe 700 is provided between the heating box 310 and the liquefaction box 500, and the drying component 600 includes a drying plate 601, which is rotatably connected to the inner wall of the connecting pipe 700 via a rotating shaft, and a torsion spring 602 is provided between the drying plate 601 and the connecting pipe 700. The connecting pipe 700 connects the liquefaction box 500 and the heating box 310, allowing the liquefied gas to flow to the heating box 310. By adding the drying plate 601 as the drying component 600, the residual water vapor can be further removed when the gas flows through the connecting pipe 700, ensuring that the airflow flowing into the heating box 310 is dry. The drying plate 601 is connected to the inner wall of the connecting pipe 700 via a rotating shaft. The existence of the torsion spring 602 ensures that the drying plate 601 can face the airflow, which helps to expose the surface of the drying plate 601 to the greatest extent for drying treatment.

[0047] The specific working process of the utility model is as follows:

[0048] (1) Drying the sludge

[0049] First, an air flow is generated by the blower 330. Since the output end of the blower 330 is connected to one side of the heating box 310, the air flow generated by the blower 330 flows into the heating box 310 with the heating tube 311. The heating tube 311 is used to increase the temperature of the air flow generated by the blower 330, and the air flow that has been heated by the heating box 310 is introduced into the inner tank 202 through the guide tube 320, thereby drying the sludge in the inner tank 202.

[0050] (2) Liquefaction

[0051] After the outlet pipe 400 discharges the steam-containing airflow into the liquefaction tank 500, the airflow passes through the condensation plate 503 for liquefaction. The small water droplets formed after liquefaction will flow along the condensation plate 503 to the supporting plate 501, and the through holes 502 on the supporting plate 501 can cause the liquefied small water droplets to concentrate at the bottom of the liquefaction tank 500, which can effectively separate the liquid water and make it gather at the bottom.

[0052] (3) Further drying

[0053] The connecting pipe 700 connects the liquefaction box 500 and the heating box 310, allowing the liquefied gas to flow to the heating box 310. By adding a drying plate 601 as a drying component 600, the residual water vapor can be further removed when the gas flows through the connecting pipe 700.

[0054] (4) Circulation into the heating box 310

[0055] In the connecting pipe 700 , the airflow passes through the drying plate 601 (the drying plate 601 may use a silica gel desiccant) and enters the heating tube 311 , and then flows back into the inner tank 202 through the guide pipe 320 .

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste gas preheating recovery device, characterized in that: include: Machine; A drying tank, the drying tank is arranged in the machine, the drying tank comprises an outer tank and an inner tank containing sludge, the outer tank is fixed in the machine, the inner tank is placed in the outer tank, and a plurality of sieve holes are arranged in an annular array along the circumference of the outer tank; A heat flow generating unit for providing warm flow to the inner tank sludge, the heat flow generating unit comprising a heating box, the heating box is located below the drying tank and is connected to the outer tank of the drying tank; An outlet pipe, one end of which is connected to the bottom of the outer liner and is used for exhausting the outer liner; A liquefaction box, which is connected to the other end of the outlet pipe and is used to liquefy the airflow transported by the outlet pipe, wherein the liquefaction box is located on one side of the heating box and is connected to the heating box; A drying component is arranged at the connection between the liquefaction box and the heating box, and is used for drying the airflow entering the heating box.

2. The exhaust gas preheating and recovery equipment according to claim 1, characterized in that: The heat flow generating part also includes a blower and a guide tube. The blower is located below the outer tank and fixed on the machine platform, and the output end of the blower is connected to one side of the heating box. One end of the guide tube is connected to one side of the heating box, and the other end of the guide tube is connected to one side of the outer tank.

3. The waste gas preheating and recovery equipment according to claim 1 or 2, characterized in that: A heating tube is arranged in the heating box.

4. The exhaust gas preheating and recovery equipment according to claim 1, characterized in that: A bearing plate is fixedly connected between the inner side walls of the liquefaction box, and a condensation plate is fixedly connected to the top of the bearing plate, and the condensation plate is inclined toward the heating box.

5. The exhaust gas preheating and recovery equipment according to claim 4, characterized in that: A plurality of through holes are provided inside the bearing plate along a linear array.

6. The waste gas preheating and recovery equipment according to claim 1, characterized in that: A connecting pipe is arranged between the heating box and the liquefaction box, and the drying assembly comprises a drying plate, which is rotatably connected to the inner wall of the connecting pipe via a rotating shaft, and a torsion spring is arranged between the drying plate and the connecting pipe.

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