Cremator flue gas low-temperature air exchanger

Abstract

The utility model relates to the technical field of cremator flue gas treatment, in particular to a cremator flue gas low-temperature air exchanger which comprises an inner shell, a collecting barrel is rotatably installed in the middle of the inner shell in a penetrating mode, a motor is fixedly installed at the bottom of the collecting barrel, and a plurality of communicating pipes are fixedly installed on the outer side of the collecting barrel in a communicating mode. According to the utility model, the scraper is adopted, more dust is adhered to the inner side of the inner shell after working for a period of time, so that the heat exchange effect of the side wall of the inner shell is influenced, and the cooling effect of high-temperature flue gas is further influenced; the motor rotates to drive the scraping plate to shovel dust blocks, the cutting knife divides large dust blocks, the dust suction equipment works to enable negative pressure to be generated at the dust suction port, the divided dust blocks are sucked into the dust suction port and then enter the dust suction equipment through the communicating pipe and the collecting cylinder, and rapid and convenient treatment of the dust on the inner side of the inner shell is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke treatment of crematoriums, in particular to a low-temperature air exchanger for smoke from crematoriums. Background Art

[0002] During the treatment of the high-temperature flue gas from the crematorium, the flue gas temperature must be further reduced to 200~180°C before the flue gas enters the bag filter. According to the environmental protection flue gas purification process requirements, it is cooled from 550°C to 200~180°C at a very fast speed within 1 second to inhibit the regeneration of dioxins. Some flue gas treatment devices in the prior art use quenching towers for cooling, which is effective, but there is a problem of secondary pollution. For this reason, some patents have begun to explore new cooling methods.

[0003] For example, the patent with authorization announcement number CN211739958U discloses a low-temperature air exchanger for the flue gas of a crematorium. Through the setting of various gas inlets and outlets, counter-convection and cross-flow with normal temperature air are adopted. The low-temperature air heat exchanger is applied in the post-processing of a three-chamber crematorium. The working condition is normal and the original design requirements are met, ensuring the normal use of flue gas purification. Finally, the 650°C flue gas temperature is reduced to 200~180°C and enters the bag-type dust collector, which will not burn the bag-type dust collector and extend the service life of the bag-type dust collector. However, there is still room for improvement.

[0004] The above-mentioned exchanger uses heat exchange to cool down. There is a lot of dust mixed in the smoke from the crematorium, and some of the dust will adhere to the inner side of the cylindrical shell. As the thickness of the attached dust increases, the heat exchange effect of the cylindrical shell decreases, which in turn slows down the cooling rate of the high-temperature crematorium smoke, and cannot meet production needs. Utility Model Content

[0005] In response to the above-mentioned problems, the present application provides a low-temperature air exchanger for the flue gas of a crematorium to solve the problem that the above-mentioned exchanger uses heat exchange to cool down, and there is a lot of dust mixed in the flue gas of the crematorium, and some of the dust will adhere to the inner side of the cylindrical shell. As the thickness of the attached dust increases, the heat exchange effect of the cylindrical shell decreases, thereby slowing down the cooling rate of the high-temperature crematorium flue gas and failing to meet production needs.

[0006] The low-temperature air exchanger for smoke from a crematorium comprises an inner shell, a collecting cylinder is rotatably installed through the middle of the inner shell, a motor is fixedly installed at the bottom of the collecting cylinder, a plurality of connecting pipes are connected and fixedly installed on the outside of the collecting cylinder, a scraper is connected and fixedly installed on one end of the connecting pipe away from the collecting cylinder, the scraper is hollow, a plurality of dust suction ports are opened through the outside of the scraper, a plurality of cutting knives are fixedly installed on the outside of the scraper, an external discharge pipe is rotatably installed on the top of the collecting cylinder, and the external discharge pipe is connected to an external dust suction device.

[0007] Furthermore, an outer cylinder is installed on the periphery of the inner shell, a hot air outlet is opened at the top of the outer cylinder, and a normal temperature air inlet is opened at the bottom of the outer cylinder.

[0008] Furthermore, the outer side of the inner shell near the top is connected and fixedly installed with a high-temperature flue gas inlet, and the outer side of the inner shell near the bottom is connected and fixedly installed with a low-temperature flue gas outlet. The high-temperature flue gas inlet and the low-temperature flue gas outlet are penetrated and fixedly connected with the outer cylinder.

[0009] Furthermore, the motor is fixedly mounted on the inner side of the outer cylinder, and the outer pipe penetrates and is fixedly connected with the outer cylinder.

[0010] Furthermore, a fixing rod is fixedly installed on the outer side of the lowest connecting pipe, a knocking column is slidably installed on the inner side of the bottom of the fixing rod, and a spring is fixedly installed between the top of the knocking column and the inner side of the bottom of the fixing rod.

[0011] Furthermore, a plurality of protrusions are fixedly mounted on the bottom of the inner shell, the protrusions cooperate with the knocking posts, and a section is provided on a side of the protrusion away from the knocking post.

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

[0013] (1) The low-temperature air exchanger for smoke from a crematorium described in the utility model adopts a scraper. After working for a period of time, a lot of dust adheres to the inner side of the inner shell, which affects the heat exchange effect of the side wall of the inner shell, and further affects the cooling effect of the high-temperature smoke. The rotation of the motor drives the scraper to remove the dust blocks, and the cutter cuts the large pieces of dust. The operation of the dust suction device generates negative pressure at the dust suction port. The cut dust blocks are sucked into the dust suction port and then enter the dust suction device through the connecting pipe and the collecting tube, thereby realizing the quick and convenient treatment of the dust inside the inner shell.

[0014] (2) The crematorium flue gas low-temperature air exchanger described in the utility model adopts a knocking column. During the rotation of the connecting pipe, the knocking column is driven to rotate synchronously. The knocking column rotates to contact the arc surface of the protrusion and is squeezed upward. The spring is compressed. When the knocking column moves to the cross section, the bottom of the knocking column loses support and moves downward under the elastic force of the spring, hitting the bottom of the inner shell, causing the inner shell to vibrate, which can accelerate the falling of dust inside, making it easier to clean the dust. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 The overall structural diagram of the crematorium flue gas low-temperature air exchanger provided by the utility model;

[0017] Figure 2 A schematic diagram of the inner shell connection of the crematorium flue gas low-temperature air exchanger provided by the utility model;

[0018] Figure 3 A schematic diagram of the internal structure of the inner shell of the crematorium flue gas low-temperature air exchanger provided by the utility model;

[0019] Figure 4 A schematic diagram of the convex structure of the crematorium flue gas low-temperature air exchanger provided by the utility model;

[0020] Figure 5 for Figure 3 Enlarged view of point A.

[0021] In the figure:

[0022] 1. Outer cylinder; 2. Hot air outlet; 3. Normal temperature air inlet; 4. High temperature flue gas inlet; 5. Low temperature flue gas outlet; 6. Inner shell; 7. Motor; 8. Collecting cylinder; 9. External exhaust pipe; 10. Connecting pipe; 11. Scraper; 12. Dust suction port; 13. Cutter; 14. Fixing rod; 15. Spring; 16. Knocking column; 17. Bump; 18. Section. DETAILED DESCRIPTION

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the utility model will be briefly introduced below in combination with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation of the utility model.

[0024] like Figure 1-Figure 5 As shown, the utility model embodiment provides a low-temperature air exchanger for smoke from a crematorium furnace, including an inner shell 6, a collecting cylinder 8 is rotatably installed through the middle of the inner shell 6, a motor 7 is fixedly installed at the bottom of the collecting cylinder 8, a plurality of connecting pipes 10 are connected and fixedly installed on the outside of the collecting cylinder 8, and a scraper 11 is connected and fixedly installed on the end of the connecting pipe 10 away from the collecting cylinder 8. The motor 7 is used to drive the scraper 11 to rotate to remove dust adhered to the inner side of the inner shell 6. The scraper 11 is hollow, and a plurality of dust suction ports 12 are opened on the outside of the scraper 11. An external discharge pipe 9 is rotatably installed on the top of the collecting cylinder 8, and the external discharge pipe 9 is connected to an external dust suction device. A plurality of cutting knives 13 are fixedly installed on the outside of the scraper 11 for dividing the removed large dust into small pieces for collection by the dust suction device.

[0025] In this embodiment, after working for a period of time, a lot of dust adheres to the inner side of the inner shell 6, which affects the heat exchange effect of the side wall of the inner shell 6, and further affects the cooling effect of the high-temperature flue gas. The staff starts the motor 7 and the external dust collection equipment, and the motor 7 rotates to drive the collecting tube 8, the connecting pipe 10, and the scraper 11 to rotate. The scraper 11 removes the dust blocks, and the cutter 13 divides the large pieces of dust to facilitate subsequent negative pressure collection. The dust collection equipment works to generate negative pressure at the dust suction port 12, and the divided dust blocks are sucked into the dust suction port 12, and then enter the dust collection equipment through the connecting pipe 10 and the collecting tube 8.

[0026] Specifically, an outer cylinder 1 is installed on the outer periphery of the inner shell 6 , a hot air outlet 2 is opened at the top of the outer cylinder 1 , and a normal temperature air inlet 3 is opened at the bottom of the outer cylinder 1 .

[0027] In this embodiment, normal temperature air enters from the normal temperature air inlet 3 and flows out from the hot air outlet 2 .

[0028] Specifically, the outer side of the inner shell 6 near the top is connected and fixedly installed with a high-temperature flue gas inlet 4, and the outer side of the inner shell 6 near the bottom is connected and fixedly installed with a low-temperature flue gas outlet 5. The high-temperature flue gas inlet 4 and the low-temperature flue gas outlet 5 are penetrated and fixedly connected with the outer tube 1.

[0029] In this embodiment, high-temperature flue gas enters from the high-temperature flue gas inlet 4 and flows out from the low-temperature flue gas outlet 5. The high-temperature flue gas and normal-temperature air exchange heat through the side wall of the inner shell 6 to achieve rapid cooling of the high-temperature flue gas.

[0030] Specifically, the motor 7 is fixedly installed inside the outer tube 1 , and the outer tube 9 penetrates and is fixedly connected to the outer tube 1 .

[0031] Specifically, a fixing rod 14 is fixedly installed on the outer side of the lowest one of the connecting pipes 10, and a knocking column 16 is slidably installed on the inner side of the bottom of the fixing rod 14, which is used to hit the bottom of the inner shell 6, so that the inner shell 6 vibrates, which facilitates the falling of dust inside it, making the dust cleaning more clean and thorough, and a spring 15 is fixedly installed between the top of the knocking column 16 and the inner side of the bottom of the fixing rod 14, which is used to drive the knocking column 16 to move downward and hit the bottom of the inner shell 6.

[0032] Specifically, a plurality of protrusions 17 are fixedly mounted on the bottom of the inner shell 6 , and the protrusions 17 match with the knocking posts 16 . A section 18 is formed on a side of the protrusions 17 away from the knocking posts 16 .

[0033] In this embodiment, during the rotation of the connecting pipe 10, the knocking column 16 is driven to rotate synchronously. The knocking column 16 rotates to contact the arc surface of the protrusion 17, is squeezed upward, and the spring 15 is compressed. When the knocking column 16 moves to the section 18, the bottom of the knocking column 16 loses support and moves downward under the elastic force of the spring 15, hitting the bottom of the inner shell 6, causing the inner shell 6 to vibrate, which can accelerate the falling of dust inside, making it easier to clean the dust.

[0034] How it works:

[0035] Normal temperature air enters from the normal temperature air inlet 3 and flows out from the hot air outlet 2, high temperature flue gas enters from the high temperature flue gas inlet 4 and flows out from the low temperature flue gas outlet 5, and the two exchange heat through the side wall of the inner shell 6, which belongs to the existing technology and the specific work flow will not be repeated.

[0036] After working for a period of time, a lot of dust adheres to the inner side of the inner shell 6, which affects the heat exchange effect of the side wall of the inner shell 6, and then affects the cooling effect of the high-temperature flue gas. The staff starts the motor 7 and the external dust collection equipment. The rotation of the motor 7 drives the collecting tube 8, the connecting pipe 10, and the scraper 11 to rotate. The scraper 11 removes the dust blocks, and the cutter 13 divides the large pieces of dust to facilitate subsequent negative pressure collection. The operation of the dust collection equipment generates negative pressure at the dust suction port 12, and the divided dust blocks are sucked into the dust suction port 12, and then enter the dust collection equipment through the connecting pipe 10 and the collecting tube 8.

[0037] During the rotation of the connecting pipe 10, the knocking column 16 is driven to rotate synchronously. The knocking column 16 rotates to contact the arc surface of the protrusion 17, is squeezed upward, and the spring 15 is compressed. When the knocking column 16 moves to the section 18, the bottom of the knocking column 16 loses support and moves downward under the elastic force of the spring 15, hitting the bottom of the inner shell 6, causing the inner shell 6 to vibrate, which can accelerate the falling of dust inside, making it easier to clean the dust.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cremator flue gas low temperature air exchanger, comprising an inner shell (6), characterized in that: A collecting cylinder (8) is rotatably mounted through the middle of the inner shell (6), a motor (7) is fixedly mounted on the bottom of the collecting cylinder (8), a plurality of connecting pipes (10) are connected and fixedly mounted on the outside of the collecting cylinder (8), one end of the connecting pipe (10) away from the collecting cylinder (8) is connected and fixedly mounted with a scraper (11), the scraper (11) is hollow, a plurality of dust suction ports (12) are opened through the outside of the scraper (11), a plurality of cutting knives (13) are fixedly mounted on the outside of the scraper (11), an external discharge pipe (9) is rotatably mounted on the top of the collecting cylinder (8), and the external discharge pipe (9) is connected to an external dust suction device.

2. The crematorium flue gas low-temperature air exchanger according to claim 1, characterized in that: An outer cylinder (1) is mounted on the periphery of the inner shell (6); a hot air outlet (2) is provided at the top of the outer cylinder (1); and a normal temperature air inlet (3) is provided at the bottom of the outer cylinder (1).

3. The crematorium flue gas low temperature air exchanger as claimed in claim 2, characterized in that: The outer side of the inner shell (6) near the top is connected to and fixedly mounted with a high-temperature smoke inlet (4), and the outer side of the inner shell (6) near the bottom is connected to and fixedly mounted with a low-temperature smoke outlet (5), and the high-temperature smoke inlet (4) and the low-temperature smoke outlet (5) are penetrated and fixedly connected with the outer cylinder (1).

4. The crematorium flue gas low-temperature air exchanger according to claim 2, characterized in that: The motor (7) is fixedly mounted on the inner side of the outer cylinder (1), and the outer discharge pipe (9) penetrates and is fixedly connected to the outer cylinder (1).

5. The crematorium flue gas low-temperature air exchanger according to claim 1, characterized in that: A fixing rod (14) is fixedly mounted on the outer side of the bottommost connecting pipe (10), a knocking column (16) is slidably mounted on the inner side of the bottom of the fixing rod (14), and a spring (15) is fixedly mounted between the top of the knocking column (16) and the inner side of the bottom of the fixing rod (14).

6. The crematorium flue gas low-temperature air exchanger according to claim 5, characterized in that: A plurality of protrusions (17) are fixedly mounted on the bottom of the inner shell (6); the protrusions (17) cooperate with the knocking posts (16); and a section (18) is provided on a side of the protrusions (17) away from the knocking posts (16).

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