Novel spiral conveyor water cooling structure

Abstract

The utility model provides a novel water cooling structure of a spiral conveyer, which belongs to the technical field of spiral conveyer equipment and comprises a conveying bin at the bottom of the spiral conveyer, a heat preservation bin arranged on the lower surface of the conveying bin, a plurality of cold water pipes arranged on one side, close to the conveying bin, in the heat preservation bin, and a liquid supply bin arranged at the front end of each cold water pipe. The tail end of each cold water pipe is provided with a liquid outlet bin, the lower end of the liquid supply bin is communicated with a liquid supply pipeline, the lower end of the liquid outlet bin is communicated with a drainage pipeline, and the liquid inlet end of the liquid supply pipeline is provided with a water supply pump. After water is injected into the cold water pipe, the first valve is closed, so that the cold water pipe is attached to the bottom of the conveying bin, the flowing materials are cooled, the design length of the material channel of the spiral conveyor is reduced, the cooling effect on the materials in the material channel of the spiral conveyor is improved, and the material conveying efficiency is also improved.

Description

Technical Field

[0001] This utility model relates to the technical field of screw conveyor equipment, and specifically to a novel water-cooled structure for screw conveyors. Background Technology

[0002] The quality of cement clinker is affected by a variety of factors, including cement composition, calcination temperature, calcination time, fine particle size, and mill exit temperature. Among these, the mill exit temperature is a critical factor affecting cement storage and transportation; excessively high mill exit temperatures can cause fluctuations in cement quality. High cement temperatures can also negatively impact workability, leading to rapid setting, significant slump loss in concrete, and even thermal stress in cement concrete, causing cracking and other damage. Therefore, properly controlling the cement mill exit temperature is of paramount importance.

[0003] The main way to cool down the cement exiting the mill is through cooling during transport. A common approach is to extend the material channel distance of the screw conveyor and use the heat dissipation of cement during the conveying process to control the cement exiting the mill temperature and ensure cement quality. However, extending the material channel distance of the screw conveyor will increase the cement conveying time and reduce production efficiency. To solve the above problems, a new water-cooled structure for screw conveyors is proposed. Utility Model Content

[0004] In view of this, the present invention provides a novel water-cooled structure for a screw conveyor. The present invention uses a water pump to draw cold water and supplies it to the supply chamber through a liquid supply pipe. The second valve is closed, and the first valve is opened to fill the cold water pipe with water. After the cold water pipe is filled with water, the first valve is closed. Thus, the cold water pipe is attached to the bottom of the conveying hopper, thereby cooling the flowing material. This reduces the design length of the screw conveyor channel, improves the cooling effect on the material in the screw conveyor channel, and also improves the conveying efficiency.

[0005] To solve the above-mentioned technical problems, this utility model provides a novel water-cooled structure for a screw conveyor, including a conveying hopper at the bottom of the screw conveyor, a screw shaft and a screw belt installed inside the conveying hopper, an insulation chamber installed on the lower surface of the conveying hopper, and multiple cold water pipes installed inside the insulation chamber near the conveying hopper. Each cold water pipe has a liquid supply chamber at its front end and a liquid outlet chamber at its end. The lower end of the liquid supply chamber is connected to a liquid supply pipe, and the lower end of the liquid outlet chamber is connected to a drainage pipe. A water pump is installed at the liquid inlet end of the liquid supply pipe.

[0006] A heat exchanger is installed at the liquid end of the drainage pipe. The heat exchanger is used for waste heat recovery. The heat exchanger can replace the warm water in the drainage pipe with cold water. A recovery water pipe is installed at the liquid outlet of the heat exchanger. A circulating water pump is installed at the liquid outlet of the recovery water pipe. The circulating water pump is used to supply the wastewater cooled by the heat exchanger to the circulating pipe.

[0007] The insulated bin is arc-shaped, with a positioning plate at each end of the top of the insulated bin. The positioning plate is used to fix the connection between the insulated bin and the outer wall of the conveying bin, thereby preventing the insulated bin from falling. The positioning plate is fixed to the outer wall of the conveying bin.

[0008] The liquid supply pipeline is equipped with a first valve, which is used to control the opening and closing of the liquid supply pipeline. The drain pipeline is equipped with a second valve, which is used to control the opening and closing of the drain pipeline.

[0009] The outlet end of the circulating water pump is equipped with a first check valve, which is used to prevent water in the supply pipeline from entering the heat exchanger. A third valve is provided on the side of the first check valve away from the circulating water pump, which is used to control the opening and closing of the circulating pipeline.

[0010] A circulation pipe is located on the side of the third valve closest to the water supply pump. The circulation pipe is used to transport the cooled water after heat exchange in the heat exchanger. A forward tee is located on the side of the circulation pipe away from the third valve. The forward tee is used to connect the water supply pump, the circulation pipe, and the liquid supply pipe in three positions. The single end of the forward tee is connected to the outlet of the water supply pump. A second check valve is located between the forward tee and the water supply pump. The second check valve is used to prevent the cooled water after heat exchange from mixing with the raw water at the inlet of the water supply pump.

[0011] In summary, compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0012] 1. Cold water is drawn by a water pump and supplied to the liquid supply chamber through the liquid supply pipeline. The second valve is closed and the first valve is opened to fill the cold water pipe. After the cold water pipe is filled, the first valve is closed. The cold water pipe is then attached to the bottom of the conveying hopper to cool the flowing material. This reduces the design length of the screw conveyor channel and improves the cooling effect on the material in the screw conveyor channel.

[0013] 2. After a period of time, the water temperature in the cold water pipe rises, and the second valve is opened to allow the heated cooling water to enter the drain pipe. The waste warm water enters the heat exchanger, where the cold water carries away the heat from the warm water, and the cooled waste warm water is stored in the heat exchanger's liquid storage tank. When needed, the circulation pump is started to draw the cooled waste warm water from the heat exchanger and supply it into the circulation pipe. The third valve and the first valve are then opened to allow it to be supplied back into the cold water pipe through the liquid supply pipe, thus achieving energy recycling.

[0014] 3. The first check valve is used to prevent water in the liquid supply pipeline from entering the heat exchanger, and the second check valve is used to prevent the cold water after heat exchange from mixing with the raw water at the inlet of the water supply pump. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a lower view assembly diagram of the present invention;

[0017] Figure 3 This is a front sectional view of the main body of this utility model;

[0018] Figure 4 This is a side sectional view of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 100, screw conveyor; 101, conveying hopper; 102, positioning plate; 200, insulation hopper; 201, cold water pipe; 202, liquid supply hopper; 203, liquid outlet hopper; 204, liquid supply pipeline; 205, water supply pump; 206, first valve; 300, drainage pipeline; 301, heat exchanger; 302, recovery water pipe; 303, circulating water pump; 304, second valve; 305, first check valve; 306, third valve; 400, circulating pipeline; 401, downstream tee; 402, second check valve. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the appendices of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described below. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0021] like Figure 1-4As shown: This embodiment provides a novel water-cooled structure for a screw conveyor, including a conveying hopper 101 at the bottom of the screw conveyor 100, a screw shaft and a screw belt disposed within the conveying hopper 101, an insulation chamber 200 disposed on the lower surface of the conveying hopper 101, the bottom of the insulation chamber 200 being filled with insulation cotton, one side of the insulation chamber 200 being connected to the lower surface of the conveying hopper 101, thereby allowing the cooling water pipes 201 to be in contact with the lower surface of the conveying hopper 101, and multiple cooling water pipes 201 disposed within the insulation chamber 200 near the conveying hopper 101, the cooling water pipes 201 being inclined towards the drain pipe 300 during installation, thereby allowing the liquid in the cooling water pipes 201 to flow by gravity into the drain pipe 300. Each cold water pipe 201 has a liquid supply chamber 202 at its front end, and the front end of each cold water pipe 201 is thermally fused to the liquid supply chamber 202. Each cold water pipe 201 has an outlet chamber 203 at its end, and the end of each cold water pipe 201 is thermally fused to the outlet chamber 203. A liquid supply pipe 204 is connected to the lower end of the liquid supply chamber 202, and the liquid supply pipe 204 is thermally fused to the liquid supply chamber 202. A drain pipe 300 is connected to the lower end of the outlet chamber 203, and the drain pipe 300 is thermally fused to the outlet chamber 203. A water supply pump 205 is provided at the liquid inlet end of the liquid supply pipe 204, and the water supply pump 205 is connected to the liquid supply pipe 204 by a flange. A cold water tank for supplying cold water is provided at the liquid inlet end of the water supply pump 205.

[0022] In use, cold water is drawn by water pump 205 and supplied to liquid supply chamber 202 through liquid supply pipe 204. The second valve 304 is closed and the first valve 206 is opened to fill the cold water pipe 201 with water. After the cold water pipe 201 is filled with water, the first valve 206 is closed. Thus, the cold water pipe 201 is attached to the bottom of the conveying hopper 101 to cool the flowing material, thereby reducing the design length of the material channel of screw conveyor 100 and improving the cooling effect of the material in the material channel of screw conveyor 100.

[0023] This embodiment provides a novel water-cooled structure for a screw conveyor 100.

[0024] like Figure 1 , 2As shown in Figure 3: A heat exchanger 301 is installed at the lower end of the drain pipe 300. The drain pipe 300 and the inlet pipe on the heat exchanger 301 are connected by a flange seal. The heat exchanger 301 is used for waste heat recovery. The heat exchanger 301 can replace the warm water in the drain pipe 300 with cold water. The heat exchanger 301 can be a tube sheet type heat exchanger 301. A recovery water pipe 302 is installed at the outlet end of the heat exchanger 301. The recovery water pipe 302 and the outlet pipe on the heat exchanger 301 are connected by a flange seal. A circulating water pump 303 is installed at the outlet end of the recovery water pipe 302. The circulating water pump 303 and the recovery water pipe 302 are connected by a flange and bolt seal. The circulating water pump 303 is used to supply the wastewater cooled by the heat exchanger 301 to the circulating pipe 400.

[0025] Its effect is that the heat exchanger 301 is used for waste heat recovery, thereby replacing the warm water in the drainage pipe 300 with cold water, thus completing the recycling of resources.

[0026] like Figure 1 , 2 As shown in Figure 4: The heat preservation chamber 200 is arc-shaped. A positioning plate 102 is provided at each of the two ends of the top of the heat preservation chamber 200. The positioning plate 102 is welded and fixed to the outer wall of the heat preservation chamber 200 and the positioning plate 102 is welded and fixed to the outer wall of the conveying hopper 101.

[0027] Its effect is that the positioning plate 102 is used to fix the connection between the heat preservation bin 200 and the outer wall of the conveying bin 101, thereby preventing the heat preservation bin 200 from falling.

[0028] like Figure 1 , 2 As shown in Figure 3: A first valve 206 is provided on the liquid supply pipeline 204. The first valve 206 is fixed to the liquid supply pipeline 204 by a flange. The first valve 206 is used to control the opening and closing of the liquid supply pipeline 204. A second valve 304 is provided on the drainage pipeline 300. Both the first valve 206 and the second valve 304 can be electric butterfly valves. The second valve 304 is fixed to the drainage pipeline 300 by a flange. The second valve 304 is used to control the opening and closing of the drainage pipeline 300.

[0029] The effect is as follows: the first valve 206 is used to control the opening and closing of the liquid supply pipe 204, and the second valve 304 is used to control the opening and closing of the drainage pipe 300. When the screw conveyor 100 is working, the second valve 304 is closed and the first valve 206 is opened to inject water. After the cold water pipe 201 is filled with water, the first valve 206 is closed, so that the cold water pipe 201 is attached to the bottom of the conveying hopper 101, thereby cooling the flowing material. After a period of time, the water temperature in the cold water pipe 201 rises and the second valve 304 is opened to allow the heated cooling water to enter the drainage pipe 300.

[0030] like Figure 1 ,2 As shown in Figure 3: The outlet end of the circulating water pump 303 is equipped with a first check valve 305. The first check valve 305 is connected to the outlet pipe of the circulating water pump 303 by a flange seal. A third valve 306 is provided on the side of the first check valve 305 away from the circulating water pump 303. The third valve 306 is connected to the circulating pipe 400 by a flange seal. The third valve 306 is used to control the opening and closing of the circulating pipe 400.

[0031] Its effect is as follows: the first check valve 305 is used to prevent water in the liquid supply pipeline 204 from entering the heat exchanger 301.

[0032] like Figure 1 , 2 As shown in Figure 3: A circulation pipe 400 is provided on the side of the third valve 306 near the water supply pump 205. The circulation pipe 400 is used to transport the cold water after heat exchange in the heat exchanger 301. A tee 401 is provided on the side of the circulation pipe 400 away from the third valve 306. The tee 401 and the circulation pipe 400 can be heat-fused together. The tee 401 is used to connect the water supply pump 205, the circulation pipe 400, and the liquid supply pipe 204 in three positions. The single end of the tee 401 is connected to the outlet end of the water supply pump 205. A second check valve 402 is provided between the tee 401 and the water supply pump 205. The second check valve 402 is connected to the pipe at the outlet end of the water supply pump 205 by a flange seal. The second check valve 402 is used to prevent the cold water after heat exchange from mixing with the raw water at the inlet end of the water supply pump 205.

[0033] Its effect is as follows: the water flow tee 401 is used to connect the water supply pump 205, the circulation pipe 400, and the liquid supply pipe 204 in three positions, so that the wastewater in the heat exchanger 301 after cooling can be supplied back into the liquid supply pipe 204.

[0034] Working principle: Cold water is drawn by water pump 205 and supplied to the liquid supply chamber 202 through liquid supply pipe 204. The second valve 304 is closed, and the first valve 206 is opened to fill the cold water pipe 201 with water. After the cold water pipe 201 is filled with water, the first valve 206 is closed, so that the cold water pipe 201 is attached to the bottom of the conveying hopper 101, thereby cooling the material flowing through it. This reduces the design length of the material channel of the screw conveyor 100 and improves the cooling effect on the material in the material channel of the screw conveyor 100. After a period of time, the water temperature in the cold water pipe 201 will increase. After the temperature rises, the second valve 304 is opened to allow the heated cooling water to enter the drain pipe 300. The waste warm water enters the heat exchanger 301, where the cold water carries away the heat from the warm water. The cooled waste warm water is then stored in the liquid storage tank of the heat exchanger 301. When needed, the circulation pump is started to draw the cooled waste warm water from the heat exchanger 301 and supply it into the circulation pipe 400. The third valve 306 and the first valve 206 are then opened to allow the water to be supplied back into the cold water pipe 201 through the liquid supply pipe 204, thus achieving energy recycling.

[0035] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A novel water-cooled structure for a screw conveyor, comprising a conveying hopper (101) at the bottom of a screw conveyor (100), a screw shaft and a screw belt disposed within the conveying hopper (101), characterized in that: The lower surface of the conveying hopper (101) is provided with an insulation chamber (200). A plurality of cold water pipes (201) are provided in the insulation chamber (200) on the side close to the conveying hopper (101). Each cold water pipe (201) has a liquid supply chamber (202) at its front end and a liquid outlet chamber (203) at its end. The lower end of the liquid supply chamber (202) is connected to a liquid supply pipe (204), and the lower end of the liquid outlet chamber (203) is connected to a drainage pipe (300). The liquid supply pipe (204) has a water supply pump (205) at its inlet end.

2. The novel water-cooled structure of the screw conveyor (100) as described in claim 1, characterized in that: A heat exchanger (301) is provided at the liquid end of the drainage pipe (300), and a recovery water pipe (302) is provided at the liquid outlet end of the heat exchanger (301), and a circulating water pump (303) is provided at the liquid outlet end of the recovery water pipe (302).

3. The water-cooled structure of the novel screw conveyor (100) as described in claim 2, characterized in that: The heat preservation bin (200) is arc-shaped, and a positioning plate (102) is provided at each of the two ends of the top of the heat preservation bin (200). The positioning plate (102) is fixed to the outer wall of the conveying bin (101).

4. The water-cooled structure of the novel screw conveyor (100) as described in claim 3, characterized in that: The liquid supply pipe (204) is provided with a first valve (206), and the drain pipe (300) is provided with a second valve (304).

5. The novel water-cooled structure of the screw conveyor (100) as described in claim 4, characterized in that: The outlet end of the circulating water pump (303) is provided with a first check valve (305), and a third valve (306) is provided on the side of the first check valve (305) away from the circulating water pump (303).

6. The water-cooled structure of the novel screw conveyor (100) as described in claim 5, characterized in that: The third valve (306) is provided with a circulation pipe (400) on the side near the water supply pump (205). A flow-through tee (401) is provided on the side of the circulation pipe (400) away from the third valve (306). The single end of the flow-through tee (401) is connected to the outlet end of the water supply pump (205). A second check valve (402) is provided between the flow-through tee (401) and the water supply pump (205).

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