Sludge heat drying wastewater cooling equipment

Abstract

The utility model provides sludge heat drying wastewater cooling equipment, which relates to the technical field of sludge heat drying and comprises a cooling structure, the cooling structure comprises a cooling box, a feeding pipe and a discharging pipe respectively penetrate through and are fixedly mounted on two sides in the cooling box, and a U-shaped coil pipe is fixedly mounted between the feeding pipe and the discharging pipe. Two cooling pipes penetrate through and are fixedly mounted on the inner side wall of the cooling box, and a filtering structure is arranged at one end of the feeding pipe; the filtering structure comprises a connecting pipe, and one end of the connecting pipe is fixedly connected with the feeding pipe. During use, wastewater enters the U-shaped coil pipe from the feeding pipe, a worker introduces cooling water into the cooling box from the cooling pipe at the bottom at the moment, the cooling water leaves from the cooling pipe at the top, and the wastewater and the cooling water are in indirect contact through the U-shaped coil pipe for heat exchange. After the temperature of the wastewater is reduced to a certain degree, the wastewater is directly discharged to a sewage treatment plant and is directly treated, and transfer of a wastewater tank is not needed.

Description

Technical Field

[0001] This utility model relates to the field of sludge thermal drying technology, and in particular to a sludge thermal drying wastewater cooling device. Background Technology

[0002] According to statistics from the Ministry of Housing and Urban-Rural Development's "National Urban Drainage and Sewage Treatment Status Over the Years," from 2015 to 2021, the number of sewage treatment plants built and put into operation in cities (excluding county towns and below) nationwide increased from 1,944 to 2,827, and the annual sewage treatment volume increased from 42,882.51 million m3 to 61,189.56 million m3, with an average annual growth rate of 6.13%. Sludge is a byproduct formed during sewage treatment. As of 2020, my country's sludge production with a water content of 80% exceeded 65 million tons. It is projected that by 2025, my country's annual sludge production will exceed 90 million tons. This indicates that with the expansion of urban areas and the improvement of sewage treatment plant efficiency, the production of excess sludge will increase year by year.

[0003] In existing technologies, high-moisture sludge generated from wastewater treatment typically needs to be dried to a certain degree using sludge thermal drying equipment before further resource recovery and harmless treatment. During the sludge thermal drying process, some equipment in the system needs to be periodically rinsed with clean water to ensure efficient and stable operation. This process generates a large amount of wastewater, which is cooled in a wastewater tank and then discharged to the wastewater treatment plant. During cooling, insoluble substances in the wastewater accumulate in the wastewater tank, causing secondary pollution. These precipitates contain large amounts of harmful gases with a pungent odor and are highly likely to pollute the environment again during secondary treatment. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art that insoluble substances in wastewater will settle in the wastewater tank during the cooling process, causing secondary pollution and requiring secondary treatment. Therefore, this invention proposes a wastewater cooling device for sludge thermal drying.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sludge thermal drying wastewater cooling device, comprising a cooling structure, the cooling structure comprising a cooling box, wherein an inlet pipe and an outlet pipe are respectively installed through and fixedly installed on both sides of the interior of the cooling box, a U-shaped coil is fixedly installed between the inlet pipe and the outlet pipe, two cooling pipes are installed through and fixedly installed on the interior side wall of the cooling box, and a filter structure is provided at one end of the inlet pipe;

[0006] The filter structure includes a connecting pipe, one end of which is fixedly connected to the feed pipe. A slot is provided at one end of the connecting pipe, and a storage groove is provided on the inner wall of the slot. A threaded hole is provided through the inner wall of the storage groove, and a threaded rod is threadedly connected inside the threaded hole. A handle is fixedly installed on the top of the threaded rod, and a locking block is movably connected to the bottom of the threaded rod. An insert is slidably installed inside the slot, and a locking groove is provided on the top of the insert. A filter screen is fixedly installed on the bottom of the insert.

[0007] Preferably, the outer wall of the cooling box is provided with a connecting groove.

[0008] Preferably, the top of the cooling box is provided with a sealing structure, the sealing structure including a protective cover, and two handles are symmetrically installed on the top of the protective cover.

[0009] Preferably, a limiting groove is formed on the inner wall of the protective cover, a spring is fixedly installed on the inner wall of the limiting groove, a connecting plate is fixedly installed on one end of the spring, a connecting rod is fixedly installed on the outer wall of the connecting plate, and a pull plate is fixedly installed on one end of the connecting rod through the protective cover.

[0010] Preferably, a retaining ring is fixedly installed at the bottom of the protective cover, and a sealing groove is opened at the top of the cooling box, with a sealing ring fixedly installed on the inner wall of the sealing groove.

[0011] Preferably, support frames are fixedly installed at all four corners of the bottom of the cooling box.

[0012] Preferably, a flange is fixedly installed on the outer wall of the connecting pipe.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this utility model, during use, the operator inserts the insert block into the slot. At this time, the outer wall of the filter screen is in contact with the inner wall of the connecting pipe. The operator rotates the handle, and the threaded rod rotates, causing the threaded rod to descend along the threaded hole. The locking block enters the slot, thus completing the installation. The operator then introduces wastewater into the connecting pipe, and the filter screen filters the wastewater to prevent high-concentration wastewater from clogging the U-shaped coil. The wastewater enters the U-shaped coil from the feed pipe. At this time, the operator introduces cooling water from the bottom cooling pipe into the cooling tank, and the cooling water exits from the top cooling pipe. The wastewater and cooling water indirectly contact each other through the U-shaped coil to exchange heat. After the wastewater temperature is reduced to a certain level, it is directly discharged to the sewage treatment plant for direct treatment without the need for a wastewater tank for transfer.

[0015] 2. In this utility model, during installation, the worker places the protective cover on the top of the cooling box, and the inclined surface of the connecting plate contacts the top of the cooling box. The connecting plate is squeezed into the limiting groove, and the spring is compressed. When the connecting plate moves to the side of the connecting groove, the connecting plate enters the connecting groove under the elastic force of the spring, thus completing the installation. At the same time, the inclined surface of the insert ring contacts the sealing ring, and the pressure of the insert ring compresses the sealing ring. When the outer wall of the insert ring enters the sealing ring, the elastic force of the sealing ring reduces the gap between the two, improving the sealing performance. Attached Figure Description

[0016] Figure 1 This utility model provides an overall perspective view of a wastewater cooling device for sludge thermal drying.

[0017] Figure 2 This utility model provides a schematic diagram of the cooling structure of a sludge thermal drying wastewater cooling device;

[0018] Figure 3 This utility model provides a schematic diagram of the filter structure for a sludge thermal drying wastewater cooling device.

[0019] Figure 4 This utility model provides a schematic diagram of the sealing structure of a sludge thermal drying wastewater cooling device.

[0020] Legend: 1. Cooling structure; 101. Cooling box; 102. Support frame; 103. U-shaped coil; 104. Feed pipe; 105. Discharge pipe; 106. Cooling pipe; 107. Sealing groove; 108. Sealing ring; 109. Connecting groove; 2. Filtering structure; 201. Connecting pipe; 202. Flange; 203. Slot; 204. Insert block; 205. Card slot; 206. Filter screen; 207. Storage slot; 208. Threaded hole; 209. Threaded rod; 210. Handle; 211. Card block; 3. Sealing structure; 301. Protective cover; 302. Handle; 303. Insert ring; 304. Limiting groove; 305. Spring; 306. Connecting plate; 307. Connecting rod; 308. Pull plate. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1, as Figures 1-4 As shown, this utility model provides a sludge thermal drying wastewater cooling device, including a cooling structure 1. The cooling structure 1 includes a cooling box 101. An inlet pipe 104 and an outlet pipe 105 are respectively installed through and fixedly installed on both sides of the inside of the cooling box 101. A U-shaped coil 103 is fixedly installed between the inlet pipe 104 and the outlet pipe 105. Two cooling pipes 106 are installed through and fixedly installed on the inner side wall of the cooling box 101. A filter structure 2 is provided at one end of the inlet pipe 104.

[0024] The filter structure 2 includes a connecting pipe 201, one end of which is fixedly connected to the feed pipe 104. A slot 203 is provided at one end of the connecting pipe 201. A storage groove 207 is provided on the inner wall of the slot 203. A threaded hole 208 is provided through the inner wall of the storage groove 207. A threaded rod 209 is threadedly connected inside the threaded hole 208. A handle 210 is fixedly installed on the top of the threaded rod 209. A locking block 211 is movably connected to the bottom of the threaded rod 209. An insert block 204 is slidably installed inside the slot 203. A locking groove 205 is provided on the top of the insert block 204. A filter screen 206 is fixedly installed on the bottom of the insert block 204.

[0025] The effect achieved by the entire embodiment 1 is as follows: When in use, the operator inserts the insert 204 into the slot 203. At this time, the outer wall of the filter screen 206 is in contact with the inner wall of the connecting pipe 201. The operator rotates the handle 210, and the threaded rod 209 rotates, causing the threaded rod 209 to descend along the threaded hole 208. The locking block 211 enters the locking groove 205, thus completing the installation. The operator then introduces wastewater into the connecting pipe 201, and the filter screen 206 filters the wastewater to prevent high-concentration wastewater from clogging the U-shaped coil 103. The wastewater enters the U-shaped coil 103 from the feed pipe 104. At this time, the operator introduces cooling water into the cooling tank 101 from the bottom cooling pipe 106 and exits from the top cooling pipe 106. The wastewater and cooling water indirectly contact each other through the U-shaped coil 103 to exchange heat. After the wastewater temperature is reduced to a certain level, it is directly discharged to the sewage treatment plant for direct treatment without the need for a wastewater tank for transfer.

[0026] Example 2, as Figures 1-4 As shown, the outer wall of the cooling box 101 is further provided with a connecting groove 109.

[0027] Furthermore, a sealing structure 3 is provided on the top of the cooling box 101. The sealing structure 3 includes a protective cover 301, and two handles 302 are symmetrically installed on the top of the protective cover 301.

[0028] Furthermore, a limiting groove 304 is provided on the inner wall of the protective cover 301. A spring 305 is fixedly installed on the inner wall of the limiting groove 304. A connecting plate 306 is fixedly installed on one end of the spring 305. A connecting rod 307 is fixedly installed on the outer wall of the connecting plate 306. One end of the connecting rod 307 passes through the protective cover 301 and is fixedly installed with a pull plate 308.

[0029] Furthermore, a retaining ring 303 is fixedly installed at the bottom of the protective cover 301, and a sealing groove 107 is opened at the top of the cooling box 101. A sealing ring 108 is fixedly installed on the inner wall of the sealing groove 107.

[0030] Furthermore, support frames 102 are fixedly installed at the four corners of the bottom of the cooling box 101.

[0031] Furthermore, a flange 202 is fixedly installed on the outer wall of the connecting pipe 201 for connection with other pipes.

[0032] The effect achieved by the entire embodiment 2 is as follows: During installation, the worker puts the protective cover 301 on the top of the cooling box 101, and the inclined surface of the connecting plate 306 contacts the top of the cooling box 101. The connecting plate 306 is squeezed into the limiting groove 304, and the spring 305 is compressed. When the connecting plate 306 moves to the side of the connecting groove 109, the connecting plate 306 enters the connecting groove 109 under the elastic force of the spring 305, thus completing the installation. At the same time, the inclined surface of the insert ring 303 contacts the sealing ring 108. The pressure of the insert ring 303 compresses the sealing ring 108. When the outer wall of the insert ring 303 enters the sealing ring 108, the elastic force of the sealing ring 108 reduces the gap between the two and improves the sealing performance.

[0033] Working principle: During use, the operator inserts the insert 204 into the slot 203. At this time, the outer wall of the filter screen 206 is in contact with the inner wall of the connecting pipe 201. The operator rotates the handle 210, and the threaded rod 209 rotates, causing the threaded rod 209 to descend along the threaded hole 208. The locking block 211 enters the locking groove 205, thus completing the installation. The operator then introduces wastewater into the connecting pipe 201. The filter screen 206 filters the wastewater to prevent high-concentration wastewater from clogging the U-shaped coil 103. The wastewater enters the U-shaped coil 103 through the feed pipe 104. At this time, the operator introduces cooling water into the cooling tank 101 through the cooling pipe 106 at the bottom and exits through the cooling pipe 106 at the top. The wastewater and cooling water exchange heat indirectly through the U-shaped coil 103. After the wastewater temperature is reduced to a certain level, it is directly discharged to the sewage treatment plant for direct treatment without the need for a wastewater tank. During installation, the worker places the protective cover 301 on top of the cooling box 101. The inclined surface of the connecting plate 306 contacts the top of the cooling box 101, and the connecting plate 306 is squeezed into the limiting groove 304. The spring 305 is compressed. When the connecting plate 306 moves to the side of the connecting groove 109, the connecting plate 306 enters the connecting groove 109 under the elastic force of the spring 305, thus completing the installation. At the same time, the inclined surface of the insert ring 303 contacts the sealing ring 108. The pressure of the insert ring 303 compresses the sealing ring 108. When the outer wall of the insert ring 303 enters the sealing ring 108, the elastic force of the sealing ring 108 reduces the gap between the two and improves the sealing performance.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A sludge thermal drying wastewater cooling device, comprising a cooling structure (1), characterized in that: The cooling structure (1) includes a cooling box (101). A feed pipe (104) and a discharge pipe (105) are respectively installed through and fixed on both sides of the interior of the cooling box (101). A U-shaped coil (103) is fixedly installed between the feed pipe (104) and the discharge pipe (105). Two cooling pipes (106) are installed through and fixed on the inner side wall of the cooling box (101). A filter structure (2) is provided at one end of the feed pipe (104). The filter structure (2) includes a connecting pipe (201), one end of which is fixedly connected to the feed pipe (104). A slot (203) is provided at one end of the connecting pipe (201). A storage groove (207) is provided on the inner wall of the slot (203). A threaded hole (208) is provided through the inner wall of the storage groove (207). A threaded rod (209) is threadedly connected inside the threaded hole (208). A handle (210) is fixedly installed on the top of the threaded rod (209). A locking block (211) is movably connected to the bottom of the threaded rod (209). An insert (204) is slidably installed inside the slot (203). A locking groove (205) is provided on the top of the insert (204). A filter screen (206) is fixedly installed on the bottom of the insert (204).

2. The sludge thermal drying wastewater cooling equipment according to claim 1, characterized in that: The cooling box (101) has a connecting groove (109) on its outer wall.

3. The sludge thermal drying wastewater cooling equipment according to claim 1, characterized in that: The cooling box (101) is provided with a sealing structure (3) on the top. The sealing structure (3) includes a protective cover (301) and two handles (302) are symmetrically installed on the top of the protective cover (301).

4. The sludge thermal drying wastewater cooling equipment according to claim 3, characterized in that: The inner wall of the protective cover (301) has a limiting groove (304), and a spring (305) is fixedly installed on the inner wall of the limiting groove (304). A connecting plate (306) is fixedly installed on one end of the spring (305), and a connecting rod (307) is fixedly installed on the outer wall of the connecting plate (306). One end of the connecting rod (307) passes through the protective cover (301) and is fixedly installed with a pull plate (308).

5. The sludge thermal drying wastewater cooling equipment according to claim 3, characterized in that: The protective cover (301) is fixedly installed with a plug ring (303) at the bottom, and the cooling box (101) is provided with a sealing groove (107) at the top, and a sealing ring (108) is fixedly installed on the inner wall of the sealing groove (107).

6. The sludge thermal drying wastewater cooling equipment according to claim 1, characterized in that: The cooling box (101) is fixedly installed with support frames (102) at the four corners of its bottom.

7. The sludge thermal drying wastewater cooling equipment according to claim 1, characterized in that: A flange (202) is fixedly installed on the outer wall of the connecting pipe (201).

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