Circulating cooling system for rotary kiln riding wheel

Abstract

The utility model provides a circulating cooling system for a rotary kiln riding wheel. The circulating cooling system comprises a cooling tower, a water storage tank and a cooling assembly which are sequentially communicated. The cooling tower is communicated with the water storage tank through a cooling pipeline, and a first water delivery pump is arranged on the cooling pipeline; a liquid level sensor and a temperature sensor which are electrically connected with the first water delivery pump are arranged in the water storage tank; the end, away from the water storage tank, of the cooling assembly is used for spraying water to the riding wheel to cool the riding wheel. And the water collecting tank is arranged under the carrier roller riding wheel, the caliber of the water collecting tank is larger than the diameter of the carrier roller riding wheel, the bottom of the water collecting tank communicates with the water storage tank through a water collecting pipe, an overflow pipe communicates with the water collecting pipe, and a second water conveying pump electrically connected with the temperature sensor is arranged on the water collecting pipe. According to the supporting wheel cooling device, cooling water can fully cool the supporting wheel, the cooling efficiency of the supporting wheel is improved, and therefore normal operation of the supporting wheel and the rotary kiln is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of rotary kilns, and in particular to a circulating cooling system for rotary kiln support rollers. Background Art

[0002] A rotary kiln, also known as a rotary bed kiln, resembles a rotating bed in appearance and belongs to the category of building materials equipment. Depending on the materials processed, it can be divided into cement kilns, metallurgical and chemical kilns, and lime kilns. A rotary kiln generally consists of a burner, a cylinder, a tyre, and supporting rollers. The supporting rollers are a crucial component, primarily used to support the cylinder and ensure stability during rotation. Specifically, when the rotary kiln is operating, the burner fires, rapidly increasing the temperature of the material and cylinder within the kiln. Some of the heat from the cylinder is transferred to the tyre. Due to direct contact between the supporting roller and the tyre, some of the heat from the tyre is transferred to the supporting roller, which then transfers the heat to the supporting roller shaft and bearings. Friction between the supporting roller and the tyre generates heat, which in turn increases the temperature of the supporting roller. High temperatures can easily cause deformation or even damage to the supporting roller, which in turn affects the normal operation of the supporting roller and, consequently, the kiln. Therefore, to ensure the normal operation of the supporting roller and the rotary kiln, the supporting roller must be cooled.

[0003] The existing rotary kiln roller cooling device (reference Figure 1 and Figure 2 ), a water tank is usually placed under the supporting wheel so that the bottom of the supporting wheel is immersed below the water surface in the water tank. During the rotation of the supporting wheel, it is in constant contact with the water in the water tank and heat is exchanged, thereby realizing the cooling of the supporting wheel. However, as the heat exchange time between the supporting wheel and the water in the water tank increases, the water temperature in the water tank continues to rise and the water in the water tank may also evaporate due to the temperature increase, causing the water level in the water tank to decrease, and even the liquid level in the water tank is lower than the bottom of the supporting wheel, which greatly reduces the heat exchange efficiency between the water in the water tank and the supporting wheel, thereby reducing the cooling efficiency of the supporting wheel. Utility Model Content

[0004] The present application provides a circulating cooling system for a rotary kiln support roller, which is used to solve the technical problems described in the above background technology.

[0005] In order to solve the above technical problems, this application adopts the following technical solutions:

[0006] The present application provides a circulating cooling system for a rotary kiln support roller, comprising: a cooling tower, a water storage tank and a cooling assembly connected in sequence;

[0007] The cooling tower and the water storage tank are connected via a cooling pipe, and a first water pump is provided on the cooling pipe;

[0008] The water storage tank is provided with a liquid level sensor and a temperature sensor electrically connected to the first water delivery pump;

[0009] One end of the cooling assembly away from the water tank is used to spray water onto the supporting wheel to cool the supporting wheel;

[0010] A water collecting trough is provided directly below the supporting wheel and has a diameter larger than the diameter of the supporting wheel. The bottom of the water collecting trough is connected to the water storage tank through a water collecting pipe and an overflow pipe is connected thereto. A second water pump electrically connected to the temperature sensor is provided on the water collecting pipe.

[0011] Optionally, a vertical partition is provided in the water storage tank for dividing it into a water storage space and a sedimentation space;

[0012] The cooling assembly is in communication with the water storage space, and one end of the water collecting pipe away from the water collecting tank is in communication with the side wall at the top of the sedimentation space;

[0013] A visual observation window is provided on the side wall of the sedimentation space, an upper section of the sedimentation space is connected to an oil drain pipe, a side wall of the sedimentation space is connected to a drainage pipe located below the oil drain pipe, and one end of the drainage pipe away from the sedimentation space is connected to the water storage space.

[0014] Optionally, there are multiple drainage pipes, which are connected to the side wall of the sedimentation space at intervals from top to bottom and are all located below the oil drainage pipe. One end of the multiple drainage pipes away from the sedimentation space is connected to the circulating water pipe, and one end of the circulating water pipe away from the oil extraction pipe is connected to the water storage space.

[0015] The circulating water pipe is provided with a second water delivery pump.

[0016] Optionally, the oil drain pipe and each of the drain pipes are provided with a stop valve.

[0017] Optionally, the bottom of the sedimentation space is connected to a sewage pipe, and a sewage valve is provided on the sewage pipe.

[0018] Optionally, the cooling assembly includes a support frame and a spray pipe;

[0019] A plurality of baffles are provided on the circumferential side of the top of the support frame, and the plurality of baffles are provided around the supporting wheel and the tops thereof are higher than the top of the supporting wheel. One end of the spray pipe is connected to the water storage space and the other end thereof passes through one of the baffles and is provided with a spray head facing the supporting wheel. The spray pipe is connected to a plurality of branch pipes corresponding to the remaining baffles one by one, and the ends of the plurality of branch pipes away from the spray pipe respectively pass through the baffles corresponding thereto and are connected to the spray head facing the supporting wheel.

[0020] Optionally, the cooling pipe includes a first pipe section, a spiral pipe section, and a second pipe section that are connected in sequence;

[0021] One end of the first pipe section away from the spiral pipe section is connected to the cooling water outlet of the cooling tower. The spiral pipe section is sleeved on the outer peripheral wall of the water tank. One end of the second pipe section away from the spiral pipe section is connected to the water storage space.

[0022] Optionally, a cover plate is provided on the top of the water tank.

[0023] The rotary kiln roller circulating cooling system provided by the present application provides cooling water to the water storage tank through a cooling tower, and then sprays the cooling water in the water storage tank onto the roller through a cooling component. This not only increases the contact area between the cooling water and the roller, but also continuously sprays the cooling water onto the roller to achieve continuous cooling of the roller, thereby improving the cooling efficiency of the roller. In addition, the cooling water after heat exchange with the roller is collected by a water collection tank, and the collected water is passed into the water storage tank through a water collection pipe and continues to be sprayed onto the roller through the cooling component to achieve cooling of the roller, thereby achieving the recycling of cooling water. When the liquid level sensor detects that the water level in the water tank is lower than the preset water level threshold, the first water pump is turned on and continues to supply cooling water to the water storage tank through the cooling tower, ensuring that there is always enough cooling water stored in the water storage tank to cool the roller, thereby ensuring the cooling efficiency of the roller. When the temperature sensor detects that the water temperature in the water tank is higher than a preset temperature threshold, the second water pump is turned off and the first water pump is turned on, supplying cooling water to the water tank through the cooling tower. This ensures that the water temperature in the water tank is always able to effectively exchange heat with the supporting roller, thereby improving the cooling efficiency of the supporting roller. This application enables the cooling water to fully cool the supporting roller, improving the cooling efficiency of the supporting roller, thereby ensuring the normal operation of the supporting roller and the rotary kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0025] Figure 1 It is a side view of the cooling of the rotary kiln support roller in the prior art;

[0026] Figure 2 This is a front view of the cooling of the rotary kiln support wheel in the prior art;

[0027] Figure 3 A schematic structural diagram of a circulating cooling system for a rotary kiln support roller provided in one embodiment of the present application;

[0028] Figure 4 A schematic diagram of the connection relationship between the liquid level sensor, the temperature sensor, the first water pump and the second water pump provided in one embodiment of the present application;

[0029] Figure 5 A schematic diagram of a structure in which a vertical partition is provided in a water storage tank provided in one embodiment of the present application;

[0030] Figure 6 A schematic diagram of the structure of a cooling pipe provided in one embodiment of the present application;

[0031] Figure 7 A schematic structural diagram of a spray pipe provided in an embodiment of the present application that passes through a baffle and is provided with a spray head.

[0032] In the figure: 100, cooling tower; 101, cooling pipe; 1011, first water pump; 1012, first pipe section; 1013, spiral pipe section; 1014, second pipe section; 200, water storage tank; 201, liquid level sensor; 202, temperature sensor; 203, water storage space; 204, sedimentation space; 2041, visual observation window; 2042, oil drain pipe; 2043, drainage pipe; 2044, sewage pipe; 205 , vertical partition; 206, cover plate; 300, cooling assembly; 301, support frame; 3011, baffle; 302, spray pipe; 3021, spray head; 3022, branch pipe; 400, support wheel; 500, water collecting tank; 501, water collecting pipe; 5011, second water pump; 502, overflow pipe; 600, circulating water pipe; 601, third water pump; 700, stop valve; 800, sewage valve; 900, rotary kiln. DETAILED DESCRIPTION

[0033] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application are clearly and completely described below. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts also fall within the scope of protection of this application.

[0034] refer to Figures 3 to 7 The present application provides a circulating cooling system for a rotary kiln support wheel, comprising: a cooling tower 100, a water storage tank 200 and a cooling assembly 300 connected in sequence.

[0035] The cooling tower 100 and the water storage tank 200 are connected via a cooling pipe 101 , and a first water pump 1011 is provided on the cooling pipe 101 ; water in the cooling tower 100 is transported to the water storage tank 200 via the first water pump 1011 .

[0036] The water tank 200 is provided with a liquid level sensor 201 and a temperature sensor 202 electrically connected to the first water pump 1011. The liquid level sensor 201 is used to detect whether the liquid level in the water tank 200 is below a preset water level threshold (which can be set according to actual needs and is not specifically limited in this application). When the liquid level sensor 201 detects that the water level in the water tank 200 is below the preset water level threshold, the first water pump 1011 is turned on and continues to supply cooling water to the water tank 200 via the cooling tower 100, ensuring that sufficient cooling water is always stored in the water tank 200 to cool the roller 400, thereby ensuring the cooling efficiency of the roller 400. The temperature sensor 202 is used to detect whether the water temperature in the water tank 200 is above a preset temperature threshold (which can be set according to actual needs and is not specifically limited in this application). The specifications and models of the liquid level sensor 201 and the temperature sensor 202 can be set according to actual needs and are not specifically limited in this application.

[0037] One end of the cooling component 300 away from the water tank 200 is used to spray water onto the supporting roller 400 to cool the supporting roller 400; wherein, the cooling water in the water tank 200 is sprayed onto the supporting roller 400 through the cooling component 300, which not only increases the contact area between the cooling water and the supporting roller 400, but also continuously spraying cooling water onto the supporting roller 400 can also achieve continuous cooling of the supporting roller 400, thereby improving the cooling efficiency of the supporting roller 400.

[0038] The water collection tank 500 is located directly below the roller 400 and has a larger diameter than the roller 400. This allows the water collection tank 500 to collect cooling water sprayed onto the roller 400 and after heat exchange with the roller 400. The bottom of the water collection tank 500 is connected to the water storage tank 200 via a water collection pipe 501, which is connected to an overflow pipe 502. The water collection pipe 501 is equipped with a second water pump 5011 electrically connected to the temperature sensor 202. When the temperature sensor 202 detects that the water temperature in the water storage tank 200 is higher than a preset temperature threshold, the second water pump 5011 is turned off and the first water pump 1011 is turned on, supplying cooling water to the water storage tank 200 via the cooling tower 100. This ensures that the water temperature in the water storage tank 200 is always sufficient for effective heat exchange with the roller 400, thereby improving the cooling efficiency of the roller 400. In addition, the setting of the overflow pipe 502 ensures that when the water level in the water collection tank 500 is higher than the overflow pipe 502, the water in the water collection tank 500 flows out through the overflow pipe 502. The water flowing out of the water collection tank 500 through the overflow pipe 502 can be collected by containers such as water collection tanks, thereby preventing the water in the water collection tank 500 from overflowing onto the ground and ensuring a clean and tidy working environment.

[0039] The circulating cooling system for the rotary kiln roller provided in the present application provides cooling water to the water tank 200 through the cooling tower 100, and then sprays the cooling water in the water tank 200 onto the roller 400 through the cooling component 300. This not only increases the contact area between the cooling water and the roller 400, but also continuously sprays cooling water onto the roller 400 to achieve continuous cooling of the roller 400, thereby improving the cooling efficiency of the roller 400. In addition, the cooling water after heat exchange with the roller 400 is collected by the water collecting trough 500, and the collected water is introduced into the water tank 200 through the water collecting pipe 501 and continues to be sprayed onto the roller 400 through the cooling component 300 to cool the roller 400, thereby realizing the recycling of cooling water. When the liquid level sensor 201 detects that the water level in the water tank 200 is lower than the preset water level threshold, the first water supply pump 1011 is turned on and continues to provide cooling water to the water tank 200 through the cooling tower 100, ensuring that there is always enough cooling water stored in the water tank 200 to cool the roller 400, thereby ensuring the cooling efficiency of the roller 400. When the temperature sensor 202 detects that the water temperature in the water tank 200 is higher than a preset temperature threshold, the second water pump 5011 is turned off and the first water pump 1011 is turned on, supplying cooling water to the water tank 200 via the cooling tower 100. This ensures that the water temperature in the water tank 200 is always able to effectively exchange heat with the roller 400, thereby improving the cooling efficiency of the roller 400. This application enables the cooling water to fully cool the roller 400, improving the cooling efficiency of the roller 400, thereby ensuring the normal operation of the roller 400 and the rotary kiln 900.

[0040] In some embodiments, reference Figure 5 The water tank 200 in the present application is provided with a vertical partition 205 for dividing it into a water storage space 203 and a sedimentation space 204; wherein, the water storage space 203 is used to store cooling water. Since organic oil, impurities, etc. may adhere to the supporting wheel 400, the oil, impurities, etc. adhered to the supporting wheel 400 are washed away by spraying cooling water on the supporting wheel 400 and enter the water collecting tank 500 with the cooling water, and the sedimentation space 204 is used to precipitate the water flowing into it from the water collecting tank 500.

[0041] The cooling assembly 300 is connected to the water storage space 203, and the end of the water collecting pipe 501 away from the water collecting tank 500 is connected to the side wall at the top of the sedimentation space 204. This ensures that water containing engine oil, impurities, etc. enters the sedimentation space 204 and settles in the sedimentation space 204, so that the water entering the water storage space 203 for spraying to the supporting wheel 400 is always clean water.

[0042] A visual observation window 2041 is provided on the side wall of the settling space 204. An oil drain pipe 2042 is connected to the upper section of the settling space 204. A water discharge pipe 2043 is also connected to the side wall of the settling space 204, located below the oil drain pipe 2042. The end of the water discharge pipe 2043, which is away from the settling space 204, is connected to the water storage space 203. The provision of the visual observation window 2041 facilitates observation of the stratification of oil, water, and impurities within the settling space 204, facilitating the discharge of oil through the oil drain pipe 2042 and the discharge of water separated from the oil, impurities, etc., into the water storage space 203 through the water discharge pipe 2043. This ensures the cleanliness of the water within the water storage space 203, prevents secondary contamination of the supporting roller by oil, impurities, etc., and ensures smooth rotation of the supporting roller 400.

[0043] Furthermore, in order to ensure the purity of the water entering the drain pipe 2043, a filter net can be set at the end of the drain pipe 2043 that is connected to the sedimentation space 204, and the impurities contained in the water entering the drain pipe 2043 can be removed by the filter net. The aperture of the mesh of the filter net can be set according to actual needs, and this application does not make any specific restrictions on it.

[0044] In some embodiments, reference Figure 1 In this application, there are multiple drain pipes 2043, which are spaced apart from each other from top to bottom and connected to the side wall of the sedimentation space 204 and are all located below the oil discharge pipe 2042. The ends of the multiple drain pipes 2043 away from the sedimentation space 204 are connected to the circulating water pipe 600, and the ends of the circulating water pipe 600 away from the oil extraction pipe 2042 are connected to the water storage space 203. Each drain pipe 2043 is provided with a flow control valve (not shown in the figure). By opening the flow control valve on each drain pipe 2043, water at the corresponding height of each drain pipe 2043 can be discharged. The arrangement of multiple drain pipes 2043 can maximize the flow of water separated from oil, impurities, etc. at different heights into the water storage space 203, thereby improving the separation efficiency of water from oil, impurities, etc. and the recycling efficiency of water. The number of drain pipes 2043 and the spacing between each two adjacent drain pipes 2043 can be set according to actual needs. Therefore, this application does not specifically limit them.

[0045] In addition, a third water delivery pump 601 is provided on the circulating water pipe 600. Specifically, when the third water delivery pump 601 is turned on, water separated from impurities at different heights in the settling space 204 enters the water storage space 203 through the drain pipes 2043 at different heights and the circulating water pipe 600. This improves the efficiency of separating water from impurities and allows the separated water to be reused, thereby increasing water utilization. If only one drain pipe 2043 is provided, when the height of impurities deposited at the bottom of the settling space 204 is higher than the height of the drain pipe 2043, it becomes difficult for water to be discharged from the drain pipe 2043. Therefore, the present application provides multiple drain pipes 2043 at different heights. This allows the height of impurities in the settling space 204 to be observed through the visual observation window 2041, thereby determining whether to open the flow control valve on the drain pipe 2043 at the corresponding height, thereby achieving separation of water from impurities.

[0046] In some embodiments, reference Figure 1 In the present application, the oil drain pipe 2042 and each drain pipe 2043 are both provided with a stop valve 700. When the separation of water, oil, and impurities in the sedimentation space 204 is observed through the visual observation window 2041, the stop valve 700 on the oil drain pipe 2042 is opened to drain the oil and other substances in the sedimentation space 204. Furthermore, the stop valve 700 on each drain pipe 2043 is opened to drain the water separated from the oil, impurities, and other substances in the sedimentation space 204, thereby ensuring the purity of the water entering the water storage space 203.

[0047] In some embodiments, reference Figure 1 In the present application, the bottom of the sedimentation space 204 is connected to a drain pipe 2044, which is provided with a drain valve 800. Since the density of impurities (e.g., sludge) may be greater than that of water, the impurities are deposited at the bottom of the sedimentation space 204. Opening the drain valve 800 allows the impurities at the bottom of the sedimentation space 204 to be discharged through the drain pipe 2044, further ensuring the purity of the water entering the water storage space 203.

[0048] In some embodiments, reference Figure 3 and Figure 7The cooling assembly 300 in the present application includes a support frame 301 and a spray pipe 302. Specifically, a plurality of baffles 3011 are disposed around the top of the support frame 301. The baffles 3011 are disposed around the roller 400 and their tops are higher than the top of the roller 400. One end of the spray pipe 302 is connected to the water storage space 203, and the other end thereof passes through one of the baffles 3011 and is provided with a spray head 3021 facing the roller 400. The spray pipe 302 is connected to a plurality of branch pipes 3022 corresponding to the remaining baffles 3011. The ends of the branch pipes 3022, which are away from the spray pipe 3022, respectively pass through their corresponding baffles 3011 and are connected to the spray heads 3021 facing the roller 400. The baffles 3011 serve to secure the spray heads 3021, ensuring a more stable process of spraying cooling water from the spray heads 3021 onto the roller 400. In addition, the setting of the baffle 3011 also plays a role in blocking the cooling water during the spraying process, preventing the cooling water from spraying everywhere and affecting the working environment.

[0049] In the above embodiment, the water in the water tank 200 is sprayed onto the support roller 400 through the spray pipe 302 and the spray head 3021 thereon, multiple branch pipes 3022 and the spray head 3021 on each branch pipe 3022. The arrangement of multiple branch pipes 3022 can spray cooling water in all directions of the support roller 400 at the same time, thereby improving the cooling efficiency of the support roller 400.

[0050] In some embodiments, reference Figure 6 The cooling pipe 101 in this application includes a first pipe section 1012, a spiral pipe section 1013, and a second pipe section 1014, which are connected in sequence. Specifically, the end of the first pipe section 1012 away from the spiral pipe section 1013 is connected to the cooling water outlet of the cooling tower 100. The spiral pipe section 1013 is sleeved on the outer wall of the water storage tank 200. The end of the second pipe section 1014 away from the spiral pipe section 1013 is connected to the water storage space 203. The first water delivery pump 1011 is disposed on the second pipe section 1014.

[0051] In the above embodiment, the first water pump 1011 is turned on, and the water in the cooling tower 100 enters the water tank 200 through the first pipe section 1012, the spiral pipe section 1013 and the second pipe section 1014 in sequence. The spiral pipe section 1013 increases the contact area between the cooling water and the water tank 200, so that the cooling water in the spiral pipe section 1013 can cool the water tank 200, thereby reducing the water temperature in the water tank 200, thereby improving the heat exchange efficiency between the cooling water and the supporting roller 400 and the cooling efficiency of the supporting roller 400.

[0052] In some embodiments, reference Figure 5The water tank 200 in the present application is provided with a cover plate 206 on the top. By opening the cover plate 206, the liquid level sensor 201 and the temperature sensor 202 in the water tank 200 can be installed, repaired, etc., thereby ensuring the normal operation of the liquid level sensor 201 and the temperature sensor 202.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A circulating cooling system for a rotary kiln support roller, characterized in that: include: A cooling tower (100), a water storage tank (200), and a cooling assembly (300) connected in sequence; The cooling tower (100) and the water storage tank (200) are connected via a cooling pipe (101), and a first water delivery pump (1011) is provided on the cooling pipe (101); A liquid level sensor (201) and a temperature sensor (202) electrically connected to the first water delivery pump (1011) are provided in the water storage tank (200); One end of the cooling assembly (300) away from the water storage tank (200) is used to spray water onto the supporting wheel (400) to cool the supporting wheel (400); A water collecting trough (500) is provided directly below the supporting wheel (400) and has a diameter larger than the diameter of the supporting wheel (400). The bottom of the water collecting trough (500) is connected to the water storage tank (200) through a water collecting pipe (501) and an overflow pipe (502) is connected thereto. A second water delivery pump (5011) electrically connected to the temperature sensor (202) is provided on the water collecting pipe (501).

2. The circulating cooling system for rotary kiln support rollers according to claim 1, characterized in that: The water storage tank (200) is provided with a vertical partition (205) for dividing it into a water storage space (203) and a sedimentation space (204); The cooling assembly (300) is in communication with the water storage space (203), and one end of the water collecting pipe (501) away from the water collecting tank (500) is in communication with the side wall at the top of the sedimentation space (204); A visual observation window (2041) is provided on the side wall of the sedimentation space (204); an oil drain pipe (2042) is connected to the upper section of the sedimentation space (204); a drainage pipe (2043) located below the oil drain pipe (2042) is connected to the side wall of the sedimentation space (204); and an end of the drainage pipe (2043) away from the sedimentation space (204) is connected to the water storage space (203).

3. The circulating cooling system for rotary kiln support rollers according to claim 2, characterized in that: There are a plurality of drainage pipes (2043), and the plurality of drainage pipes (2043) are connected to the side wall of the sedimentation space (204) at intervals from top to bottom and are all located below the oil drainage pipe (2042); one end of the plurality of drainage pipes (2043) away from the sedimentation space (204) is connected to the circulating water pipe (600), and one end of the circulating water pipe (600) away from the oil drainage pipe (2042) is connected to the water storage space (203); The circulating water pipe (600) is provided with a third water delivery pump (601).

4. The circulating cooling system for rotary kiln support rollers according to claim 3, characterized in that: The oil drain pipe (2042) and each of the drain pipes (2043) are provided with a stop valve (700).

5. The circulating cooling system for rotary kiln support rollers according to claim 2, characterized in that: The bottom of the sedimentation space (204) is connected to a sewage pipe (2044), and a sewage valve (800) is provided on the sewage pipe (2044).

6. The circulating cooling system for rotary kiln support rollers according to claim 2, characterized in that: The cooling assembly (300) includes a support frame (301) and a spray pipe (302); A plurality of baffles (3011) are provided around the top of the support frame (301), and the plurality of baffles (3011) are provided around the supporting wheel (400) and their tops are higher than the top of the supporting wheel (400). One end of the spray pipe (302) is connected to the water storage space (203), and the other end thereof passes through one of the baffles (3011) and is provided with a spray head (3021) facing the supporting wheel (400). The spray pipe (302) is connected to a plurality of branch pipes (3022) corresponding to the remaining baffles (3011) one by one, and one end of the plurality of branch pipes (3022) away from the spray pipe (302) passes through the corresponding baffles (3011) and is connected to the spray head (3021) facing the supporting wheel (400).

7. The circulating cooling system for rotary kiln support rollers according to claim 2, characterized in that: The cooling pipe (101) comprises a first pipe section (1012), a spiral pipe section (1013), and a second pipe section (1014) which are connected in sequence; One end of the first pipe section (1012) away from the spiral pipe section (1013) is connected to the cooling water outlet of the cooling tower (100); the spiral pipe section (1013) is sleeved on the outer peripheral wall of the water storage tank (200); and one end of the second pipe section (1014) away from the spiral pipe section (1013) is connected to the water storage space (203).

8. The circulating cooling system for rotary kiln support rollers according to any one of claims 1 to 7, characterized in that: A cover plate (206) is provided on the top of the water storage tank (200).

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