Waste heat recycling type cement production preheater

Abstract

The invention provides a waste heat recycling type cement production preheater, and relates to the field of preheating equipment, the waste heat recycling type cement production preheater comprises a supporting seat, a connecting box is fixed on the supporting seat, the connecting box is fixedly communicated with a preheater body, the preheater body is fixedly communicated with a breather pipe, the breather pipe is fixedly communicated with a material conveying pipe, and the material conveying pipe is fixedly communicated with the material conveying pipe. A plurality of lifting assemblies are fixed in the connecting box, a working table is fixed between the lifting assemblies, a door is arranged on the working table, a rotating part is rotationally connected to the working table, a driving assembly capable of driving the rotating part to rotate is connected to the working table, and a plurality of supporting parts are fixed to the rotating part in the circumferential direction; a scraper is rotationally connected to the supporting piece. According to the crust scraping device, the winding device rotates forwards, the workbench descends due to gravity, the scraper is driven to rotate and move downwards to scrape crust, scraping is achieved by controlling the rotating speed of the winding device, and the workbench is arranged and is in a circular ring shape, so that people in the workbench are protected, and the safety of people is improved.

Description

Technical Field

[0001] The present invention relates to the field of preheating equipment, and particularly to a waste heat recovery and utilization type cement production preheater. Background Art

[0002] A cement preheater is a heating surface that utilizes the flue gas in the tail flue of a boiler to preheat the air before entering the boiler to a certain temperature through the internal fins. Preheating can significantly reduce the combustion load in the rotary kiln because the preheated raw meal has reached a relatively high temperature and requires less heat after entering the rotary kiln. This not only saves fuel but also improves the thermal efficiency.

[0003] In the cement production process, cement raw meal is added to the air duct of the cement preheater, and the waste heat is used to preheat the cement raw meal. The preheating and partial decomposition of the raw meal are completed by the preheater, replacing part of the functions of the rotary kiln. At the same time, the gas-solid heat exchange process is carried out in a stacked state in the kiln, enabling the raw meal to be fully mixed with the hot gas discharged from the kiln, achieving the purpose of improving the production efficiency of the kiln system and reducing the heat consumption for clinker burning.

[0004] When the existing preheater device is in use, dust and particulate matter are likely to accumulate inside it, resulting in crust formation and causing equipment blockage, affecting production efficiency. The traditional method for cleaning the preheater requires people to enter the interior of the preheater and then stand on a hanging scaffold, moving up and down the scaffold to clean the areas with crust in the preheater. The traditional preheater cleaning method is inefficient, difficult to operate, has poor safety, and the results are uncontrollable.

[0005] In order to overcome the disadvantages of the traditional method for cleaning the crust of the preheater, which is inefficient, difficult to operate, and has low safety, a waste heat recovery and utilization type cement production preheater is designed to solve the above problems. Summary of the Invention

[0006] The present invention provides a waste heat recovery and utilization type cement production preheater to overcome the disadvantages of the traditional method for cleaning the crust of the preheater, which is inefficient, difficult to operate, and has low safety.

[0007] Technical Solution: A waste heat recovery and utilization type cement production preheater includes a support base. A connection box is fixed on the support base. A preheater is fixed and communicated with the connection box. A ventilation pipe is fixed and communicated with the preheater. A feed pipe is fixed and communicated with the ventilation pipe. A plurality of lifting components are fixed in the connection box. A workbench is commonly fixed between the lifting components. A door is arranged on the workbench. A rotating member is rotatably connected to the workbench. A driving component capable of driving the rotating member to rotate is connected to the workbench. A plurality of supporting members are circumferentially fixed on the rotating member. A scraper is rotatably connected to the supporting member.

[0008] In addition, it is particularly preferred that each lifting component includes a fixing frame symmetrically fixed inside the connection box. A winder is rotatably connected inside the fixing frame. One end of a number of connecting chains is fixed and wound around the winder, and the other ends of the connecting chains are fixedly connected to the workbench.

[0009] In addition, it is particularly preferred that the driving component includes a rotating gear rotatably connected to the workbench. The rotating gear meshes with the rotating part. A driving motor is fixed on the workbench, and the output shaft of the driving motor is fixedly connected to the rotating gear.

[0010] In addition, it is particularly preferred that a number of connecting torsion springs are fixedly connected between the scraper and the support member.

[0011] In addition, it is particularly preferred that a protective shell is fixed on one side of the workbench close to the rotating gear.

[0012] In addition, it is particularly preferred that a spraying mechanism is further included, which can spray and clean the wall surface of the preheater to facilitate people to remove the scale, and at the same time can spray and clean the dust after removal. The spraying mechanism includes a number of first hoses. One end of each first hose is fixed and wound around the winder, and the other ends of the first hoses are fixedly connected and communicated with a connecting component. Sprayers are symmetrically fixed on the support member, and second hoses are fixedly connected and communicated between the sprayers and the connecting component.

[0013] In addition, it is particularly preferred that the connecting component includes a first water storage frame fixedly connected and communicated between the other ends of the first hoses. A second water storage frame is rotatably connected to the first water storage frame, and the second water storage frame is fixedly connected to the support member.

[0014] In addition, it is particularly preferred that a limiting mechanism is further included, which can automatically lock and limit after the door on the workbench is closed. The limiting mechanism includes a connecting member fixed on one side of the workbench close to the door. A limiting member is slidably connected to the connecting member. The limiting member is in pressing fit with the door on the workbench. A fixing member is fixed on the connection box, and the fixing member is in pressing fit with the limiting member.

[0015] In addition, it is particularly preferred that a return spring is fixedly connected between the limiting member and the connecting member.

[0016] In the present invention, by starting the driving motor to drive the rotating gear, the rotating part, the support member and the scraper rotate. At the same time, the winder rotates forward, and the workbench descends due to gravity, driving the scraper to rotate and move downward to scrape the coating. The scraping is realized by controlling the rotation speed of the winder. By providing the workbench in a circular ring shape, the people inside can be protected, thereby improving the safety of the people.

[0017] In the present invention, by providing a spray head, when the workbench descends, it drives the support member and the spray head to move downward and rotate, so as to fully spray water on the inner wall of the preheater, soften the cement crust, and facilitate efficient cleaning by the scraper.

[0018] In the present invention, when the rod of the limiting member presses against the upper part of the fixing member and the guiding member, the limiting member is pressed away from the workbench, compressing the return spring, and disengaging from the workbench. The workbench is no longer restricted, and under the block of the fixing member, the door on the workbench can be aligned with the pedal, and personnel can open the door and walk out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 is a three-dimensional structural sectional view of components such as the support base, connection box, and preheater of the present invention.

[0021] Figure 3 is a three-dimensional structural sectional view of components such as the ventilation pipe, workbench, and scraper of the present invention.

[0022] Figure 4 is a three-dimensional structural sectional view of components such as the scraper, reel, and connecting chain of the present invention.

[0023] Figure 5 is a three-dimensional structural schematic diagram of components such as the rotating member, protective shell, and rotating gear of the present invention.

[0024] Figure 6 is a three-dimensional structural schematic diagram of components such as the protective shell, rotating gear, and driving motor of the present invention.

[0025] Figure 7 is a three-dimensional structural sectional view of components such as the first hose, first water storage frame, and second water storage frame of the present invention.

[0026] Figure 8 is a three-dimensional structural sectional view of components such as the second water storage frame, spray head, and second hose of the present invention.

[0027] Figure 9 is a three-dimensional structural sectional view of components such as the second water storage frame, spray head, and second hose of the present invention.

[0028] Figure 10 is a three-dimensional structural sectional view of components such as the connection box, fixing member, and connecting member of the present invention.

[0029] Figure 11 is a three-dimensional structural sectional view of components such as the connecting member, limiting member, and return spring of the present invention.

[0030] In the figure: 1. Support base, 11. Connection box, 12. Preheater, 13. Vent pipe, 14. Feeding pipe, 15. Workbench, 16. Scraper, 17. Rewinder, 171. Fixing frame, 18. Connecting chain, 19. Support member, 110. Connecting torsion spring, 111. Rotating member, 112. Protective shell, 113. Rotating gear, 114. Driving motor, 2. First hose, 21. First water storage frame, 22. Second water storage frame, 23. Sprayer, 24. Second hose, 3. Fixing member, 31. Connecting member, 32. Limiting member, 33. Return spring. Detailed implementation mode

[0031] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation modes and with reference to the accompanying drawings. It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present invention. In addition, in the following descriptions, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0032] Example 1: A waste heat recovery and utilization type cement production preheater, as Figures 1-6 shown, includes a support base 1, a connection box 11 is fixed on the support base 1, a preheater 12 is fixed and communicated with the lower side of the connection box 11, a discharge port is arranged on the lower side of the preheater 12, a vent pipe 13 is fixed and communicated with the upper side surface of the preheater 12, a feeding pipe 14 is fixed and communicated with the vent pipe 13, a sealing device is arranged on the feeding pipe 14, two lifting components are fixed in the connection box 11, a workbench 15 is jointly fixed between the lifting components, a rotating member 111 is rotatably connected to the workbench 15, several tooth grooves are evenly formed on the circumferential surface of the side of the rotating member 111, a driving component capable of driving the rotating member 111 to rotate is connected to the workbench 15, a support member 19 is circumferentially fixed on the rotating member 111, and a scraper 16 is rotatably connected to each of the support members 19.

[0033] An exhaust pipe is arranged on the upper side of the connection box 11, a door is opened on the connection box 11, so as to facilitate people to enter and check the internal situation of the device, a door is also arranged on the workbench 15, the workbench 15 is in a circular ring shape, so as to protect people and reduce the risk of people falling, and a pedal is arranged at a position close to the door in the connection box 11 to facilitate the entry and exit of personnel to the workbench 15.

[0034] As Figure 4As shown, each lifting component includes a fixing frame 171. The fixing frames 171 are symmetrically fixed inside the connection box 11. A winder 17 is rotatably connected inside each fixing frame 171. The winders 17 are electrically connected to an external control system through a control module. One end of two connecting chains 18 is fixed and wound around each winder 17, and the other ends of the connecting chains 18 are fixedly connected to the workbench 15.

[0035] Each connecting chain 18 is composed of many thick chains connected together. Such a connecting chain 18 has high strength and good support, can effectively reduce the risk of fracture, and has a high safety factor. The winder 17 is divided into multiple parts by a partition, and different connecting chains 18 are wound around different parts, so as to prevent the connecting chains 18 from winding around each other when being wound.

[0036] As Figures 5-6 shown, the driving component includes a rotating gear 113. A protruding bracket is fixed under the workbench 15. The rotating gear 113 is rotatably connected to the bracket of the workbench 15. The rotating gear 113 meshes with the tooth grooves on the rotating member 111. A driving motor 114 is fixed on the workbench 15, and the output shaft of the driving motor 114 is fixedly connected to the rotating gear 113.

[0037] Specifically, when people need to preheat the cement, first connect the lower side of the preheater 12 to the cement rotary kiln through a pipeline, and connect the ventilation pipe 13 to the cement clinker calcination equipment, so that the hot gas generated by the cement clinker calcination enters the preheater 12 through the ventilation pipe 13. Then open the sealing device on the feeding pipe 14 and add the cement raw meal from the feeding pipe 14. The cement raw meal is driven by the hot gas and moves towards the inside of the preheater 12. After the raw meal is added, it is dispersed by the upward airflow and evenly suspended in the airflow. At this time, convective heat transfer occurs. Since the contact area between the gas and the solid is very large in the suspended state, the convective heat transfer coefficient is relatively high and the heat transfer speed is extremely fast. It usually only takes 0.02 - 0.04 s to complete the heat transfer, so that the temperature of the cement raw meal rises and the temperature of the hot gas drops. The cement raw meal flows from the discharge port at the bottom of the preheater 12 to the rotary kiln after entering the preheater 12, while the gas goes out from the exhaust pipe at the top of the connection box 11, thus completing the preheating work of the cement.

[0038] As described above, during the preheating of cement, due to reasons such as too low lime saturation factor of raw meal, improper temperature control, and ventilation problems, cement crust may appear on the inner wall of the preheater 12, and it is very difficult to completely avoid the generation of cement crust. However, by taking reasonable measures, the generation probability can be greatly reduced. Therefore, workers still need to clean the crust at regular intervals. When it is necessary to clean the cement crust on the inner wall of the preheater 12, first connect the lower side of the preheater 12 to the cement crust collection device through a pipeline. People first enter the interior of the workbench 15, and then control the driving motor 114 to start through an external control system. The output shaft of the driving motor 114 drives the rotating gear 113 to rotate. The rotating gear 113 meshes with the rotating member 111, so that the rotating member 111 drives the support member 19 to rotate. The support member 19 drives the scraper 16 to rotate. The rotating scraper 16 scrapes the crust on the inner wall of the preheater 12. At the same time, people control both winding devices 17 to start and rotate forward through an external control system. When the winding devices 17 rotate forward, they no longer wind the connecting chain 18, making the connecting chain 18 loose. Due to the gravity of the workbench 15 itself, the workbench 15 drives people to move downward. The workbench 15 drives the rotating member 111, which in turn drives the support member 19 to move downward. The support member 19 drives the scraper 16 to move downward. While moving downward, the scraper 16 rotates to scrape the crust on the inner wall of the preheater 12. People can control the rotation speed of the winding device 17 to be slow through an external control system, so that the speed at which the workbench 15 drives people to move downward is slow, so that the scraper 16 can fully scrape the cement crust on the inner wall of the preheater 12.

[0039] In this embodiment, when the workbench 15 descends to the bottom of the preheater 12, people control the winding device 17 to rotate reversely through an external control system. The winding devices 17 rotate reversely to wind the connecting chain 18. The connecting chain 18 drives the workbench 15, which in turn drives people to move upward and reset. While moving upward, the scraper 16 continues to clean the cement crust on the inner wall of the preheater 12 to avoid residue of the crust. When the workbench 15 moves upward to its original position, people turn off the winding device 17 and the driving motor 114. The scraped cement crust will fall to the bottom of the preheater 12, and then enter the cement crust collection device through the pipeline at the bottom of the preheater 12, thus completing the cleaning of the cement crust. There is no need for people to clean it manually, which is convenient for operation. At the same time, under the protection of the workbench 15, the safety of people is improved.

[0040] Long guide rods are symmetrically arranged inside the preheater 12. The guide rods are slidably connected to the workbench 15, so that the guide rods can guide the workbench 15 when it moves up and down, preventing the workbench 15 from shifting and shaking when moving up and down.

[0041] As shown Figure 5 in the figure, there are also a number of connecting torsion springs 110, and the connecting torsion springs 110 are fixedly connected between the scraper 16 and the support member 19.

[0042] In this embodiment, on the one hand, the structure of the inner wall of the preheater 12 is not all flat, and there are cases where the inner wall protrudes. On the other hand, there are cases where the cement crust is too firmly combined with the inner wall of the preheater 12, which will damage the scraper 16. Therefore, the scraper 16 is rotatably connected to the support member 19, and a connecting torsion spring 110 is connected between the scraper 16 and the support member 19. The connecting torsion spring 110 has a large torsion force, which can ensure that the scraper 16 is in a scraping state with the inner wall of the preheater 12. When the scraper 16 rotates after encountering a protrusion, the connecting torsion spring 110 can drive the scraper 16 to reverse and reset. At the same time, the connecting torsion spring 110 can also play a buffering role to prevent the scraper 16 from being damaged by a violent collision when encountering a protrusion.

[0043] As shown Figures 5-6 in the figure, there is also a protective shell 112. The protective shell 112 is fixed on one side of the workbench 15 close to the rotating gear 113. The protective shell 112 is sleeved on the feed pipe 14, which can protect the feed pipe 14, so as to prevent cement ash from adhering to the feed pipe 14 or even entering the inside of the feed pipe 14 during cement preheating, resulting in the inability of the feed pipe 14 to operate.

[0044] Embodiment 2: On the basis of Embodiment 1, as shown Figures 7-9 in the figure, after the cement crust is generated, due to factors such as crusting time, location, and working conditions, the maximum thickness can reach 500 mm, and the average is about 300 mm. At the same time, the strength of the cooled crust material is relatively high. Using only the scraper 16 for scraping may not be easy to clean and requires more time. Based on this, a spraying mechanism is provided that can perform high-pressure water flow impact on the front and back of the preheater 12 before and after scraping the crust, so as to facilitate cleaning and scraping.

[0045] The spraying mechanism includes four first hoses 2. One ends of the first hoses 2 are fixedly wound around the reel 17, and a connecting component is fixedly connected and communicated between the other ends of the first hoses 2. The first hoses 2 are all communicated with an external water injection device. Sprayers 23 are symmetrically fixed on the support member 19, and second hoses 24 are fixedly connected and communicated between the sprayers 23 and the connecting component.

[0046] Switches are arranged on the sprayers 23, and the switches are electrically connected to an external control system through a control module.

[0047] As shown Figures 7-9As shown, the connecting component includes a first water storage frame 21, which is fixed and communicated with the other end of the first hose 2. A second water storage frame 22 is rotatably connected to the first water storage frame 21, and the second water storage frame 22 is fixedly connected to the support member 19.

[0048] Specifically, when people need to clean the cement crust, first connect the first hose 2 to an external water injection device, so that water enters the cavity formed by the first water storage frame 21 and the second water storage frame 22 through the first hose 2. Then the water enters the spray head 23 through the second hose 24. Then people control the driving motor 114 to start through an external control system. The driving motor 114 drives the rotating gear 113 to rotate, so that the rotating member 111 drives the support member 19 and then drives the second water storage frame 22 to rotate. Because the second water storage frame 22 is rotatably connected to the first water storage frame 21, when the second water storage frame 22 rotates, it will not drive the first water storage frame 21 to rotate. The support member 19 drives the spray head 23 and then drives the second hose 24 to rotate. At the same time, people control the spray heads 23 to open through an external control system and control the winder 17 to rotate forward. The winder 17 loosens the connecting chain 18, making the connecting chain 18 loose. The workbench 15 drives people to move downward. The workbench 15 drives the connecting torsion spring 110 and then drives the support member 19 to move downward. The support member 19 drives the spray head 23 to move downward. The spray heads 23 are all opened, so that the spray heads 23 spray water onto the inner wall of the preheater 12. At the same time, the spray heads 23 move downward and rotate together with the support member 19, so that the spray heads 23 can spray water on the inner wall of the preheater 12 sufficiently, softening the cement crust, so that when the scraper 16 rotates, it can better scrape and clean the softened crust, which is more efficient.

[0049] In this embodiment, two circles of retaining rings are arranged in the second water storage frame 22, so that the structure formed by the first water storage frame 21 and the second water storage frame 22 can store a certain amount of water. At the same time, the retaining rings can also play a certain role in blocking and sealing, preventing water leakage. Because the second water storage frame 22 is rotatably connected to the first water storage frame 21, when the second water storage frame 22 rotates together with the support member 19, it will not drive the first water storage frame 21 to rotate together, thus avoiding the situation that the first hose 2 connected to the first water storage frame 21 is wound and knotted due to rotation.

[0050] A plurality of water outlets are arranged on each of the spray heads 23, and the water outlets are arranged vertically. Increasing the number of water outlets can increase the area covered by the water column, enabling a larger area of cement crust to be flushed and softened at one time. The vertical arrangement of the water outlets can cooperate with the scraper 16, so that the water spraying area coincides with the area scraped by the scraper 16.

[0051] Sprinklers 23 are provided on both sides of the support member 19. During the process of removing the clinker, the sprinkler 23 on the side where the support member 19 rotates can spray water on the clinker to soften it before the scraper 16 scrapes off the clinker, and the sprinkler 23 on the other side can spray water on the area that has been scraped after the scraper 16 has scraped, thus avoiding clinker residue and visually determining whether the cement clinker has been completely removed and whether manual intervention is required.

[0052] As Figures 10-11 shown, in order to ensure people's safety and make the door on the workbench 15 align with the pedal on the connection box 11, a limiting mechanism is provided to limit the door on the workbench 15. The limiting mechanism includes a connecting member 31, the connecting member 31 is fixed on the side of the workbench 15 close to the door, a limiting member 32 is slidably connected to the connecting member 31, the limiting member 32 is in pressing fit with the door on the workbench 15, a rod is provided on the limiting member 32, a fixing member 3 is fixed on the connection box 11, the fixing member 3 is in pressing fit with the rod on the limiting member 32, and a guiding member is provided on the fixing member 3 to guide the rod on the limiting member 32.

[0053] As Figure 11 shown, a return spring 33 is further included, and the return spring 33 is fixedly connected between the limiting member 32 and the connecting member 31.

[0054] Specifically, when people finish cleaning the cement clinker inside the preheater 12, people control the reel 17 to reverse, so that the connecting chains 18 pull the workbench 15 upward. The workbench 15 drives the connecting member 31 and then drives the limiting member 32 to move upward. When the rod on the limiting member 32 is in pressing fit with the upper part of the guiding member on the fixing member 3, the limiting member 32 will be pressed by the fixing member 3 and move away from the workbench 15. The return spring 33 is compressed. The limiting member 32 changes from the state of blocking and restricting the workbench 15 to separating from the workbench 15. The workbench 15 is no longer blocked. At the same time, under the blocking of the fixing member 3, after the workbench 15 stops, the door on the workbench 15 can be opposite to the pedal on the connection box 11, and then people can open the door and walk out of the workbench 15.

[0055] As described above, when people need to clean the cement crust, the workbench 15 drives the connecting member 31 and then drives the limiting member 32 to move downward. When the limiting member 32 moves downward and disengages from the fixing member 3, the return spring 33 returns to drive the limiting member 32 to move toward the side of the door on the workbench 15, so that the limiting member 32 blocks and restricts the door again, preventing the door on the workbench 15 from rotating and opening, thereby avoiding the risk of people falling due to the sudden opening of the door. At the same time, the guide rod on the fixing member 3 can guide the rod on the limiting member 32. The lower part of the guide rod is inclined, which can buffer the limiting member 32 and prevent the limiting member 32 from popping out quickly due to the elastic force of the return spring 33.

[0056] Although the present invention has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art through the present disclosure that various changes or modifications can be made to the present invention without departing from the principle and spirit scope of the present invention defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, rather than to limit the present invention, and the scope of protection is defined by the content of the claims.

Claims

1. A waste heat recovery type cement production preheater, comprising a support base (1), a connection box (11) is fixed on the support base (1), a preheater (12) is fixed and communicated on the connection box (11), a ventilation pipe (13) is fixed and communicated on the preheater (12), a feeding pipe (14) is fixed and communicated on the ventilation pipe (13), and it is characterized in that: A plurality of lifting components are fixed in the connection box (11), a workbench (15) is fixed between the lifting components, a door is arranged on the workbench (15), a rotating member (111) is rotatably connected to the workbench (15), a driving component capable of driving the rotating member (111) to rotate is connected to the workbench (15), a plurality of supporting members (19) are circumferentially fixed on the rotating member (111), and a scraper (16) is rotatably connected to the supporting member (19).

2. The waste heat recovery type cement production preheater according to claim 1, characterized in that, Each lifting component includes a fixing frame (171), the fixing frame (171) is symmetrically fixed inside the connection box (11), a winding device (17) is rotatably connected inside the fixing frame (171), one ends of a plurality of connection chains (18) are fixed and wound on the winding device (17), and the other ends of the connection chains (18) are fixedly connected to the workbench (15).

3. The preheater for cement production with waste heat recovery and utilization according to claim 2, characterized in that The driving component includes a rotating gear (113), the rotating gear (113) is rotatably connected to the workbench (15), the rotating gear (113) is meshed and matched with the rotating member (111), a driving motor (114) is fixed on the workbench (15), and an output shaft of the driving motor (114) is fixedly connected to the rotating gear (113).

4. A waste heat recovery type cement production preheater according to claim 3, characterized in that, A plurality of connecting torsion springs (110) are further included, and the connecting torsion springs (110) are fixedly connected between the scraper (16) and the supporting member (19).

5. A waste heat recovery type cement production preheater according to claim 4, characterized in that, A protective shell (112) is further included, and the protective shell (112) is fixed on one side of the workbench (15) close to the rotating gear (113).

6. A waste heat recovery type cement production preheater according to claim 5, characterized in that, A spraying mechanism for spraying and cleaning the wall surface of the preheater (12) is further included, the spraying mechanism includes a plurality of first hoses (2), one ends of the first hoses (2) are fixed and wound on the winding device (17), a connecting component is fixed and communicated between the other ends of the first hoses (2), spray heads (23) are symmetrically fixed on the supporting member (19), and a second hose (24) is fixedly connected and communicated between the spray heads (23) and the connecting component.

7. A waste heat recovery type cement production preheater according to claim 6, characterized in that, The connecting component includes a first water storage frame (21), the first water storage frame (21) is fixed and communicated between the other ends of the first hoses (2), a second water storage frame (22) is rotatably connected to the first water storage frame (21), and the second water storage frame (22) is fixedly connected to the supporting member (19).

8. A waste heat recovery and utilization type cement production preheater according to claim 7, characterized in that, It further includes a limiting mechanism that can automatically lock and restrict after the door on the workbench (15) is closed. The limiting mechanism includes a connecting member (31), the connecting member (31) is fixed on the side of the workbench (15) close to the door, a limiting member (32) is slidably connected to the connecting member (31), the limiting member (32) is in pressing fit with the door on the workbench (15), a fixing member (3) is fixed on the connection box (11), and the fixing member (3) is in pressing fit with the limiting member (32).

9. A waste heat recovery type cement production preheater according to claim 8, characterized in that, It further includes a return spring (33), and the return spring (33) is fixedly connected between the limiting member (32) and the connecting member (31).

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