Cooling system for circulating fan of heat treatment furnace

Abstract

The invention belongs to the technical field of fan cooling, and particularly relates to a cooling system for a circulating fan of a heat treatment furnace, the cooling system comprises a water tank for storing water inside, a plurality of fan assemblies and a cooling tower, a first pipe is arranged between the first water inlet end of the water tank and the water outlet ends of the multiple fan assemblies, and a second pipe is arranged between the second water inlet end of the water tank and the water outlet ends of the multiple fan assemblies; a first pipe is arranged at the water outlet end of the water tank, a second pipe is arranged between the first water outlet end of the water tank and the water inlet end of the cooling tower, a third pipe is arranged between the second water outlet end of the water tank and the water inlet end of the cooling tower, a fourth pipe is arranged between the second water inlet end of the water tank and the water outlet end of the cooling tower, and pumps are arranged on the first pipe, the second pipe, the third pipe and the fourth pipe. In the cooling system of the circulating fan of the heat treatment furnace, the cooling tower is additionally arranged to achieve the effect of accelerating cooling, so that water for cooling in the water tank is kept at a lower temperature, the cooling capacity is improved, the service life of the water-cooling fan is prolonged, and the uniformity in the furnace and the product quality are ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of fan cooling, and in particular relates to a cooling system for a circulating fan of a heat treatment furnace. Background Art

[0002] To ensure uniformity, a directly connected water-cooled fan with relatively good cooling effect is generally installed on the top of the second-class heat treatment furnace. Because strong airflow stirring is required, high-power motors are used. The motor on the top of the furnace has to face the large amount of heat generated by its own strong power and the heat of the furnace body brought by the direct connection shaft of the motor.

[0003] Most water-cooled fans face the problem of insufficient cooling capacity because their operating capacity does not match their cooling capacity. Insufficient cooling capacity of water-cooled fans will cause the circulating water temperature to rise, and the cooling water cannot take away the large amount of heat in the fan, which will burn out the insulation layer of the fan rotor, burn out the motor, damage the equipment, and also affect normal production.

[0004] In view of the above problems, a cooling system for the circulating fan of a heat treatment furnace is designed. Summary of the invention

[0005] The present invention aims at solving the problems in the prior art and proposes the following technical solutions: A cooling system for a circulating fan of a heat treatment furnace, comprising a water tank for internal water storage, a plurality of fan assemblies, and a cooling tower, wherein a pipe 1 is arranged between a water inlet end 1 of the water tank and water outlet ends of the plurality of fan assemblies, a pipe 2 is arranged between a water outlet end 1 of the water tank and a water inlet end of the cooling tower, a pipe 3 is arranged between a water outlet end 2 of the water tank and a water inlet end of the cooling tower, a pipe 4 is arranged between a water inlet end 2 of the water tank and a water outlet end of the cooling tower, and pumps are arranged on the pipe 1, the pipe 2, the pipe 3, and the pipe 4; The fan assembly includes a box body with an opening at the upper end and an upper cover arranged above the box body. A fan and a wet curtain covering the upper side of the fan are arranged inside the box body. A water storage chamber is formed at the lower part of the box body. The water storage chamber is connected with pipe one. Spray pipes are distributed on the upper cover. The spray pipes are connected with pipe two through a branch pipe. A spray hole is opened at the lower end of the spray pipe.

[0006] As a preferred embodiment of the above technical solution, the first water inlet end and the second water outlet end are both arranged at the upper part of the water tank, and the first water outlet end and the second water inlet end are both arranged at the lower part of the water tank; The size of the water tank is 2200X1200X1500mmmm, and the water stored in the water tank is soft water.

[0007] As a preferred embodiment of the above technical solution, a water volume regulating component and a flow sensor are provided on the branch pipe, and the water volume regulating component is located between the second pipe and the flow sensor.

[0008] As a preferred embodiment of the above technical solution, the branch pipe is provided with a mounting section; The water volume regulating assembly comprises a first baffle and a second baffle which are arranged inside the installation section, and the second baffle moves back and forth in a horizontal direction relative to the first baffle.

[0009] As a preferred embodiment of the above technical solution, the first baffle is connected to the inner wall of the installation section, the second baffle is connected to a screw, the screw thread is matched with a screw sleeve, and one end of the screw sleeve passes through the side wall of the installation section and rotates therewith; The first baffle is provided with a groove first and a block first, the second baffle is provided with a groove second and a block second, the block first is inserted into the interior of the second groove and slidably cooperates with it, and the block second is inserted into the interior of the first groove and slidably cooperates with it.

[0010] As a preferred embodiment of the above technical solution, a sealing ring 1 is provided on the inner top wall of the installation section, and the sealing ring 1 is in contact with the blocking piece 1 and the blocking piece 2; One end of the screw sleeve located outside the installation section is closed, and a mechanical seal is formed between the screw sleeve and the installation section.

[0011] As a preferred embodiment of the above technical solution, a support rod is provided below the spray pipe, and the support rod is assembled to the upper cover by means of screws.

[0012] As a preferred embodiment of the above technical solution, a plurality of spray pipes are provided, and the plurality of spray pipes are respectively distributed in different areas of the upper cover.

[0013] As a preferred embodiment of the above technical solution, a flow splitter assembly is provided between the branch pipe and the spray pipe; The flow diversion component comprises a column arranged inside the branch pipe, wherein the column is provided with drainage holes having the same number as that of the spray pipe, and the drainage holes are opposite to the water inlet of the spray pipe.

[0014] As a preferred embodiment of the above technical solution, an annular groove is provided on the outer wall of the column, a second sealing ring is provided inside the annular groove, and the second sealing ring contacts the inner wall of the branch pipe.

[0015] As a preferred embodiment of the above technical solution, the flow splitting component further includes a connecting piece which is connected to the branch pipe; The connecting piece is provided with a hole 1 for accommodating the spray pipe and a hole 2 for accommodating the column. The connecting piece is connected with the branch pipe through the hole 2. The number of the holes 1 is consistent with the number of the spray pipes. One ends of multiple holes 1 are connected and connected with the hole 2.

[0016] As a preferred embodiment of the above technical solution, the lower end of the column extends axially to form a limiting sleeve; When the spray pipe is butt-jointed with the column, the spray pipe is located inside the limiting sleeve and a plurality of spray pipes are in conflict with each other.

[0017] As a preferred embodiment of the above technical solution, the limiting sleeve extends radially to form a positioning strip, and the spray pipe is provided with a positioning groove matching the positioning strip; When the spray pipe is butt-jointed with the column, the positioning strip is located inside the positioning groove.

[0018] As a preferred embodiment of the above technical solution, the connecting member is a split structure, and the connecting member includes an upper plate and a lower plate, the hole 1 is distributed on the upper plate and the lower plate, and the hole 2 is distributed on the upper plate.

[0019] As a preferred embodiment of the above technical solution, the upper plate and the lower plate are assembled by bolts.

[0020] The beneficial effects of the present invention are: 1. In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, the cooling efficiency is accelerated by adding a cooling tower, so that the water used for cooling inside the water tank is kept at a lower temperature, the cooling capacity is increased, the service life of the water-cooled fan is improved, and the uniformity in the furnace and the product quality are guaranteed.

[0021] 2. In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, a water volume regulating component and a flow sensor are added to distribute cooling water according to the cooling capacity of each fan component to ensure the cooling water consumption of each fan component, thereby ensuring that each fan component reaches the required cooling capacity.

[0022] 3. In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, a diversion component is added, and the drain hole divides the water flow into multiple streams with the same flow rate. The multiple streams flow into the corresponding spray pipes respectively. By ensuring that the water consumption in the area corresponding to each spray pipe is the same, the purpose of ensuring the uniformity of the cooling capacity of the total area is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Shown is a schematic diagram of the structure of a cooling system for a circulating fan of a heat treatment furnace in the present application; Figure 2 It shows Figure 1 Schematic diagram of the local structure; Figure 3 It shows Figure 2 Schematic diagram of partial structure section; Figure 4 It shows Figure 2 Schematic diagram of the structure of the water volume regulating component; Figure 5 Shown is a top view of a cross-sectional schematic diagram of a water volume regulating assembly; Figure 6 It shows Figure 5The structural diagram of the middle baffle piece 1 and baffle piece 2; Figure 7 Shown is a schematic diagram of the distribution of the spray pipes in this application; Figure 8 It shows Figure 3 A schematic diagram of the structure of the middle splitter assembly; Fig. 9 It shows Figure 8 Schematic diagram of the structure of the middle column; Fig.10 What is shown is a schematic diagram of the top view of the column structure; Fig.11 It shows Figure 8 Schematic diagram of the partial structure of the middle spray pipe; Fig.12 It shows Figure 8 Schematic diagram of the structure of the connecting parts.

[0024] Reference numerals: water tank 10; pipe 1 11; pipe 2 12; pipe 3 13; pipe 4 14; branch pipe 15; installation section 151; Fan assembly 20; box body 21; fan 22; water storage chamber 23; wet curtain 24; upper cover 25; spray pipe 26; positioning groove 261; support rod 27; Cooling tower 30; Water volume regulating assembly 40; baffle 1 41; groove 1 411; block 1 412; baffle 2 42; groove 2 421; block 2 422; screw 43; screw sleeve 44; Flow sensor 50; Flow diversion component 60; column 61; drain hole 611; limit sleeve 612; positioning strip 613; connector 62; upper plate 621; lower plate 622; hole 1 623; hole 2 624; bolt 625. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0026] Example 1 like Figure 1 , Figure 2 , Figure 3As shown, a cooling system for a circulating fan of a heat treatment furnace includes a water tank 10 for internal water storage, a plurality of fan assemblies 20, and a cooling tower 30. A pipe 11 is provided between a water inlet end 1 of the water tank 10 and water outlet ends of the plurality of fan assemblies 20, a pipe 2 12 is provided between a water outlet end 1 of the water tank 10 and a water inlet end of the cooling tower 30, a pipe 3 13 is provided between a water outlet end 2 of the water tank 10 and a water inlet end of the cooling tower 30, a pipe 4 14 is provided between a water inlet end 2 of the water tank 10 and a water outlet end of the cooling tower 30, and pumps are provided on the pipe 1 1, the pipe 2 12, the pipe 3 13, and the pipe 4 14; The fan assembly 20 includes a box body 21 with an opening at the upper end, and an upper cover 25 arranged above the box body 21. A fan 22 and a wet curtain 24 covering the upper side of the fan 22 are arranged inside the box body 21. A water storage chamber 23 is formed at the lower part of the box body 21. The water storage chamber 23 is connected to the pipe 1 11. A spray pipe 26 is distributed on the upper cover 25. The spray pipe 26 is connected to the pipe 2 12 through a branch pipe 15. A spray hole is opened at the lower end of the spray pipe 26. In the fan assembly 20, water in the spray pipe 26 is sprayed out through the spray hole to form a water flow on the wet curtain 24, which takes away the heat on the fan 22 and is then stored in the water storage chamber 23.

[0027] In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, the water with higher temperature inside the water tank 10 enters the interior of the cooling tower 30 through the pipe three 13, and the water cooled by the cooling tower 30 enters the interior of the water tank 10 through the pipe four 14; the cooling water inside the water tank 10 is transported to the position of the fan assembly 20 through the pipe two 12, absorbs heat to complete the cooling of the fan 22, and then enters the interior of the water tank 10 through the pipe one 11, forming a cooling system for the circulating fan of the heat treatment furnace.

[0028] In the cooling system of the circulating fan of the heat treatment furnace, by adding a cooling tower 30, the cooling effect is accelerated, so that the water used for cooling inside the water tank 10 is kept at a lower temperature, the cooling capacity is increased, the service life of the water-cooling fan is improved, and the uniformity in the furnace and the product quality are guaranteed.

[0029] It solves the problem of insufficient cooling capacity of water-cooled fans, saves a lot of purchase costs of expensive high-temperature direct-connected circulating fans that frequently burn out, extends equipment life, and reduces the impact of equipment failure on production progress. It can be used for all water-cooled circulating equipment with defective cooling capacity.

[0030] In order to meet the temperature characteristics of water, that is, the water with high temperature is located at the top and the water with low temperature is located at the bottom in the same water tank, such as Figure 1 , Figure 2 , Figure 3 As shown, the first water inlet end and the second water outlet end are both arranged at the upper part of the water tank 10 , and the first water outlet end and the second water inlet end are both arranged at the lower part of the water tank 10 .

[0031] The water with higher temperature after the cooling fan is collected through pipe 11 and transported to the upper part of the water tank 10 through the water inlet end 1; the water with higher temperature located at the upper part of the water tank 10 enters the interior of the cooling tower 30 through the water outlet end 2 and pipe 3 13 for water cooling; the water with lower temperature at the lower part of the water tank 10 is transported to the fan assembly 20 through the water outlet end 1 and pipe 2 12; the water cooled in the cooling tower 30 enters the lower part of the water tank 10 through pipe 4 14 and the water inlet end 2, which conforms to the temperature characteristics of water and is more practical.

[0032] like Figure 1 As shown, in order to further increase the heat exchange capacity, the size of the water tank 10 is increased from the original 2000X1000X1000mm to 2200X1200X1500mm. By increasing the volume of the water tank 10, its storage capacity is increased and the heat exchange capacity is improved.

[0033] The size of the water tank 10 is set to 2200X1200X1500mm, which solves the problem that during use, because two large trolley furnaces with a total of 20 cooling fans share the water tank 10, the temperature of the water tank 10 rises very high when working at the same time, and it cannot play a cooling role. In addition, the water in the water tank often evaporates and burns the motor, which seriously increases the production cost, increases manpower and material resources, and affects the progress of the product.

[0034] like Figure 1 As shown, the water stored in the water tank 10 is soft water, that is, the circulating water used in the cooling system of the circulating fan of the heat treatment furnace is soft water. The setting of connecting to soft water reduces the risk of clogging the pipeline and burning the motor due to water scaling and rust generated by pipeline corrosion.

[0035] To realize the assembly between the spray pipe 26 and the upper cover 25, as shown in FIG. Figure 7 As shown, a support rod 27 is provided below the spray pipe 26, and screws are used to assemble the support rod 27 and the upper cover 25. The spray pipe 26 is fixed between the support rod 27 and the upper cover 25, and has good stability.

[0036] To further increase the cooling capacity of this system, Figure 7 As shown, a plurality of spray pipes 26 are provided, and the plurality of spray pipes 26 are respectively distributed in different areas of the upper cover 25. In this embodiment, four spray pipes 26 are provided, and the four spray pipes 26 divide the upper cover 25 into four areas, that is, the wet curtain 24 corresponds to four spray areas.

[0037] By increasing the distribution density of the spray pipe 26, that is, increasing the cooling water flow area, a large amount of heat is taken away. This solves the problem that the installation site is small and other coolers cannot be installed. By comparing before and after installation, the original water tank temperature rise of more than 60°C is now reduced to 20°C, which effectively reduces the fan temperature and increases its service life.

[0038] Example 2 Extended from Example 1, such as Figure 1 , Figure 2 , Figure 3 As shown, a cooling system for a circulating fan of a heat treatment furnace includes a water tank 10 for internal water storage, a plurality of fan assemblies 20, and a cooling tower 30. A pipe 11 is provided between a water inlet end 1 of the water tank 10 and water outlet ends of the plurality of fan assemblies 20, a pipe 2 12 is provided between a water outlet end 1 of the water tank 10 and a water inlet end of the cooling tower 30, a pipe 3 13 is provided between a water outlet end 2 of the water tank 10 and a water inlet end of the cooling tower 30, a pipe 4 14 is provided between a water inlet end 2 of the water tank 10 and a water outlet end of the cooling tower 30, and pumps are provided on the pipe 1 1, the pipe 2 12, the pipe 3 13, and the pipe 4 14; The fan assembly 20 includes a box body 21 with an opening at the upper end, and an upper cover 25 arranged above the box body 21. A fan 22 and a wet curtain 24 covering the upper side of the fan 22 are arranged inside the box body 21. A water storage chamber 23 is formed at the lower part of the box body 21. The water storage chamber 23 is connected to the pipe 1 11. A spray pipe 26 is distributed on the upper cover 25. The spray pipe 26 is connected to the pipe 2 12 through a branch pipe 15. A spray hole is opened at the lower end of the spray pipe 26. In the fan assembly 20, water in the spray pipe 26 is sprayed out through the spray hole to form a water flow on the wet curtain 24, which takes away the heat on the fan 22 and is then stored in the water storage chamber 23.

[0039] In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, the water with higher temperature inside the water tank 10 enters the interior of the cooling tower 30 through the pipe three 13, and the water cooled by the cooling tower 30 enters the interior of the water tank 10 through the pipe four 14; the cooling water inside the water tank 10 is transported to the position of the fan assembly 20 through the pipe two 12, absorbs heat to complete the cooling of the fan 22, and then enters the interior of the water tank 10 through the pipe one 11, forming a cooling system for the circulating fan of the heat treatment furnace.

[0040] In the cooling system of the circulating fan of the heat treatment furnace, by adding a cooling tower 30, the cooling effect is accelerated, so that the water used for cooling inside the water tank 10 is kept at a lower temperature, the cooling capacity is increased, the service life of the water-cooling fan is improved, and the uniformity in the furnace and the product quality are guaranteed.

[0041] It solves the problem of insufficient cooling capacity of water-cooled fans, saves a lot of purchase costs of expensive high-temperature direct-connected circulating fans that frequently burn out, extends equipment life, and reduces the impact of equipment failure on production progress. It can be used for all water-cooled circulating equipment with defective cooling capacity.

[0042] In order to meet the temperature characteristics of water, that is, the water with high temperature is located at the top and the water with low temperature is located at the bottom in the same water tank, such as Figure 1 , Figure 2 , Figure 3As shown, the first water inlet end and the second water outlet end are both arranged at the upper part of the water tank 10 , and the first water outlet end and the second water inlet end are both arranged at the lower part of the water tank 10 .

[0043] The water with higher temperature after the cooling fan is collected through pipe 11 and transported to the upper part of the water tank 10 through the water inlet end 1; the water with higher temperature located at the upper part of the water tank 10 enters the interior of the cooling tower 30 through the water outlet end 2 and pipe 3 13 for water cooling; the water with lower temperature at the lower part of the water tank 10 is transported to the fan assembly 20 through the water outlet end 1 and pipe 2 12; the water cooled in the cooling tower 30 enters the lower part of the water tank 10 through pipe 4 14 and the water inlet end 2, which conforms to the temperature characteristics of water and is more practical.

[0044] like Figure 1 As shown, in order to further increase the heat exchange capacity, the size of the water tank 10 is increased from the original 2000X1000X1000mm to 2200X1200X1500mm. By increasing the volume of the water tank 10, its storage capacity is increased and the heat exchange capacity is improved.

[0045] The size of the water tank 10 is set to 2200X1200X1500mm, which solves the problem that during use, because two large trolley furnaces with a total of 20 cooling fans share the water tank 10, the temperature of the water tank 10 rises very high when working at the same time, and it cannot play a cooling role. In addition, the water in the water tank often evaporates and burns the motor, which seriously increases the production cost, increases manpower and material resources, and affects the progress of the product.

[0046] like Figure 1 As shown, the water stored in the water tank 10 is soft water, that is, the circulating water used in the cooling system of the circulating fan of the heat treatment furnace is soft water. The setting of connecting to soft water reduces the risk of clogging the pipeline and burning the motor due to water scaling and rust generated by pipeline corrosion.

[0047] To realize the assembly between the spray pipe 26 and the upper cover 25, as shown in FIG. Figure 7 As shown, a support rod 27 is provided below the spray pipe 26, and screws are used to assemble the support rod 27 and the upper cover 25. The spray pipe 26 is fixed between the support rod 27 and the upper cover 25, and has good stability.

[0048] To further increase the cooling capacity of this system, Figure 7 As shown, a plurality of spray pipes 26 are provided, and the plurality of spray pipes 26 are respectively distributed in different areas of the upper cover 25. In this embodiment, four spray pipes 26 are provided, and the four spray pipes 26 divide the upper cover 25 into four areas, that is, the wet curtain 24 corresponds to four spray areas.

[0049] By increasing the distribution density of the spray pipe 26, that is, increasing the cooling water flow area, a large amount of heat is taken away. This solves the problem that the installation site is small and other coolers cannot be installed. By comparing before and after installation, the original water tank temperature rise of more than 60°C is now reduced to 20°C, which effectively reduces the fan temperature and increases its service life.

[0050] Because one water tank 10 corresponds to multiple fan assemblies 20, there is a problem of uneven distribution of cooling water, resulting in different cooling capacities of each fan assembly 20. To address this problem, specific measures are as follows: Figure 2 As shown, a water volume regulating component 40 and a flow sensor 50 are provided on the branch pipe 15 , and the water volume regulating component 40 is located between the pipe 2 12 and the flow sensor 50 .

[0051] The flow sensor 50 is used to test the water flow of the branch pipe 15. According to the amount of cooling water required by each fan assembly 20, when the water flow of the branch pipe 15 is greater than the required amount, the water volume is reduced by the water volume regulating assembly 40; when the water flow of the branch pipe 15 is less than the required amount, the water volume is reduced by the water volume regulating assembly 40.

[0052] In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, a water volume regulating component 40 and a flow sensor 50 are added to distribute cooling water according to the cooling capacity of each fan component 20 to ensure the cooling water consumption of each fan component 20, thereby ensuring that each fan component 20 reaches the required cooling capacity.

[0053] To solve the installation problem of the water volume regulating assembly 40, as Figure 4 , Figure 5 As shown, a mounting section 151 is provided on the branch pipe 15 .

[0054] like Figure 4 , Figure 5 , Figure 6 As shown, the water volume regulating assembly 40 includes a baffle 1 41 and a baffle 2 42 which are arranged inside the mounting section 151 , and the baffle 2 42 reciprocates in the horizontal direction relative to the baffle 1 41 .

[0055] In the water volume regulating assembly 40, the distance between the baffle 1 41 and the baffle 2 42 is controlled to control the space in which the water can flow, thereby achieving the purpose of controlling the water flow rate.

[0056] In order to realize the matching arrangement of the baffle plate 2 42 to reciprocate in the horizontal direction relative to the baffle plate 1 41, as shown in FIG. Figure 4 , Figure 5 , Figure 6 As shown, the baffle 1 41 is connected to the inner wall of the mounting section 151, the baffle 2 42 is connected to a screw 43, the screw 43 is threadedly matched with a screw sleeve 44, and one end of the screw sleeve 44 penetrates the side wall of the mounting section 151 and rotates therewith; The baffle plate 1 41 has a groove 1 411 and a block 1 412 , the baffle plate 2 42 has a groove 2 421 and a block 2 422 , the block 1 412 is inserted into the groove 2 421 and slidably cooperates therewith, and the block 2 422 is inserted into the groove 1 411 and slidably cooperates therewith.

[0057] The block 1 412 is inserted into the interior of the groove 2 421 and slides with it. The block 2 422 is inserted into the interior of the groove 1 411 and slides with it, and the baffle 2 42 is limited in the circumferential direction, so that it can only move linearly and cannot rotate in the circumferential direction. When the baffle 2 42 is limited in the circumferential direction and the screw 43 is threadedly matched with the screw sleeve 44, when the screw sleeve 44 is rotated, the baffle 2 42 is driven to reciprocate in the horizontal direction by the screw 43, that is, the distance between the baffle 2 42 and the baffle 1 41 is increased (opened) or reduced (closed).

[0058] To further ensure the accuracy of water flow, Figure 4 , Figure 5 As shown, the inner top wall of the installation section 151 is provided with a sealing ring 1, which contacts with the baffle 1 41 and the baffle 2 42 to prevent water from overflowing from between the inner top wall of the installation section 151 and the baffle 1 41 and the baffle 2 42.

[0059] like Figure 4 , Figure 5 As shown, one end of the screw sleeve 44 located outside the installation section 151 is closed, and a mechanical seal is formed between the screw sleeve 44 and the installation section 151. This prevents water from overflowing between the screw rod 43 and the screw sleeve 44, and between the screw sleeve 44 and the side wall of the installation section 151, thereby ensuring the sealing between the water volume regulating assembly 40 and the branch pipe 15.

[0060] Example 3 Derived from Example 2, such as Figure 1 , Figure 2 , Figure 3 As shown, a cooling system for a circulating fan of a heat treatment furnace includes a water tank 10 for internal water storage, a plurality of fan assemblies 20, and a cooling tower 30. A pipe 11 is provided between a water inlet end 1 of the water tank 10 and water outlet ends of the plurality of fan assemblies 20, a pipe 2 12 is provided between a water outlet end 1 of the water tank 10 and a water inlet end of the cooling tower 30, a pipe 3 13 is provided between a water outlet end 2 of the water tank 10 and a water inlet end of the cooling tower 30, a pipe 4 14 is provided between a water inlet end 2 of the water tank 10 and a water outlet end of the cooling tower 30, and pumps are provided on the pipe 1 1, the pipe 2 12, the pipe 3 13, and the pipe 4 14; The fan assembly 20 includes a box body 21 with an opening at the upper end, and an upper cover 25 arranged above the box body 21. A fan 22 and a wet curtain 24 covering the upper side of the fan 22 are arranged inside the box body 21. A water storage chamber 23 is formed at the lower part of the box body 21. The water storage chamber 23 is connected to the pipe 1 11. A spray pipe 26 is distributed on the upper cover 25. The spray pipe 26 is connected to the pipe 2 12 through a branch pipe 15. A spray hole is opened at the lower end of the spray pipe 26. In the fan assembly 20, water in the spray pipe 26 is sprayed out through the spray hole to form a water flow on the wet curtain 24, which takes away the heat on the fan 22 and is then stored in the water storage chamber 23.

[0061] In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, the water with higher temperature inside the water tank 10 enters the interior of the cooling tower 30 through the pipe three 13, and the water cooled by the cooling tower 30 enters the interior of the water tank 10 through the pipe four 14; the cooling water inside the water tank 10 is transported to the position of the fan assembly 20 through the pipe two 12, absorbs heat to complete the cooling of the fan 22, and then enters the interior of the water tank 10 through the pipe one 11, forming a cooling system for the circulating fan of the heat treatment furnace.

[0062] In the cooling system of the circulating fan of the heat treatment furnace, by adding a cooling tower 30, the cooling effect is accelerated, so that the water used for cooling inside the water tank 10 is kept at a lower temperature, the cooling capacity is increased, the service life of the water-cooling fan is improved, and the uniformity in the furnace and the product quality are guaranteed.

[0063] It solves the problem of insufficient cooling capacity of water-cooled fans, saves a lot of purchase costs of expensive high-temperature direct-connected circulating fans that frequently burn out, extends equipment life, and reduces the impact of equipment failure on production progress. It can be used for all water-cooled circulating equipment with defective cooling capacity.

[0064] In order to meet the temperature characteristics of water, that is, the water with high temperature is located at the top and the water with low temperature is located at the bottom in the same water tank, such as Figure 1 , Figure 2 , Figure 3 As shown, the first water inlet end and the second water outlet end are both arranged at the upper part of the water tank 10 , and the first water outlet end and the second water inlet end are both arranged at the lower part of the water tank 10 .

[0065] The water with higher temperature after the cooling fan is collected through pipe 11 and transported to the upper part of the water tank 10 through the water inlet end 1; the water with higher temperature located at the upper part of the water tank 10 enters the interior of the cooling tower 30 through the water outlet end 2 and pipe 3 13 for water cooling; the water with lower temperature at the lower part of the water tank 10 is transported to the fan assembly 20 through the water outlet end 1 and pipe 2 12; the water cooled in the cooling tower 30 enters the lower part of the water tank 10 through pipe 4 14 and the water inlet end 2, which conforms to the temperature characteristics of water and is more practical.

[0066] like Figure 1As shown, in order to further increase the heat exchange capacity, the size of the water tank 10 is increased from the original 2000X1000X1000mm to 2200X1200X1500mm. By increasing the volume of the water tank 10, its storage capacity is increased and the heat exchange capacity is improved.

[0067] The size of the water tank 10 is set to 2200X1200X1500mm, which solves the problem that during use, because two large trolley furnaces with a total of 20 cooling fans share the water tank 10, the temperature of the water tank 10 rises very high when working at the same time, and it cannot play a cooling role. In addition, the water in the water tank often evaporates and burns the motor, which seriously increases the production cost, increases manpower and material resources, and affects the progress of the product.

[0068] like Figure 1 As shown, the water stored in the water tank 10 is soft water, that is, the circulating water used in the cooling system of the circulating fan of the heat treatment furnace is soft water. The setting of connecting to soft water reduces the risk of clogging the pipeline and burning the motor due to water scaling and rust generated by pipeline corrosion.

[0069] To realize the assembly between the spray pipe 26 and the upper cover 25, as shown in FIG. Figure 7 As shown, a support rod 27 is provided below the spray pipe 26, and screws are used to assemble the support rod 27 and the upper cover 25. The spray pipe 26 is fixed between the support rod 27 and the upper cover 25, and has good stability.

[0070] To further increase the cooling capacity of this system, Figure 7 As shown, a plurality of spray pipes 26 are provided, and the plurality of spray pipes 26 are respectively distributed in different areas of the upper cover 25. In this embodiment, four spray pipes 26 are provided, and the four spray pipes 26 divide the upper cover 25 into four areas, that is, the wet curtain 24 corresponds to four spray areas.

[0071] By increasing the distribution density of the spray pipe 26, that is, increasing the cooling water flow area, a large amount of heat is taken away. This solves the problem that the installation site is small and other coolers cannot be installed. By comparing before and after installation, the original water tank temperature rise of more than 60°C is now reduced to 20°C, which effectively reduces the fan temperature and increases its service life.

[0072] Because one water tank 10 corresponds to multiple fan assemblies 20, there is a problem of uneven distribution of cooling water, resulting in different cooling capacities of each fan assembly 20. To address this problem, specific measures are as follows: Figure 2 As shown, a water volume regulating component 40 and a flow sensor 50 are provided on the branch pipe 15 , and the water volume regulating component 40 is located between the pipe 2 12 and the flow sensor 50 .

[0073] The flow sensor 50 is used to test the water flow of the branch pipe 15. According to the amount of cooling water required by each fan assembly 20, when the water flow of the branch pipe 15 is greater than the required amount, the water volume is reduced by the water volume regulating assembly 40; when the water flow of the branch pipe 15 is less than the required amount, the water volume is reduced by the water volume regulating assembly 40.

[0074] In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, a water volume regulating component 40 and a flow sensor 50 are added to distribute cooling water according to the cooling capacity of each fan component 20 to ensure the cooling water consumption of each fan component 20, thereby ensuring that each fan component 20 reaches the required cooling capacity.

[0075] To solve the installation problem of the water volume regulating assembly 40, as Figure 4 , Figure 5 As shown, a mounting section 151 is provided on the branch pipe 15 .

[0076] like Figure 4 , Figure 5 , Figure 6 As shown, the water volume regulating assembly 40 includes a baffle 1 41 and a baffle 2 42 which are arranged inside the mounting section 151 , and the baffle 2 42 reciprocates in the horizontal direction relative to the baffle 1 41 .

[0077] In the water volume regulating assembly 40, the distance between the baffle 1 41 and the baffle 2 42 is controlled to control the space in which the water can flow, thereby achieving the purpose of controlling the water flow rate.

[0078] In order to realize the matching arrangement of the baffle plate 2 42 to reciprocate in the horizontal direction relative to the baffle plate 1 41, as shown in FIG. Figure 4 , Figure 5 , Figure 6 As shown, the baffle 1 41 is connected to the inner wall of the mounting section 151, the baffle 2 42 is connected to a screw 43, the screw 43 is threadedly matched with a screw sleeve 44, and one end of the screw sleeve 44 penetrates the side wall of the mounting section 151 and rotates therewith; The baffle plate 1 41 has a groove 1 411 and a block 1 412 , the baffle plate 2 42 has a groove 2 421 and a block 2 422 , the block 1 412 is inserted into the groove 2 421 and slidably cooperates therewith, and the block 2 422 is inserted into the groove 1 411 and slidably cooperates therewith.

[0079] The block 1 412 is inserted into the interior of the groove 2 421 and slides with it. The block 2 422 is inserted into the interior of the groove 1 411 and slides with it, and the baffle 2 42 is limited in the circumferential direction, so that it can only move linearly and cannot rotate in the circumferential direction. When the baffle 2 42 is limited in the circumferential direction and the screw 43 is threadedly matched with the screw sleeve 44, when the screw sleeve 44 is rotated, the baffle 2 42 is driven to reciprocate in the horizontal direction by the screw 43, that is, the distance between the baffle 2 42 and the baffle 1 41 is increased (opened) or reduced (closed).

[0080] To further ensure the accuracy of water flow, Figure 4 , Figure 5 As shown, the inner top wall of the installation section 151 is provided with a sealing ring 1, which contacts with the baffle 1 41 and the baffle 2 42 to prevent water from overflowing from between the inner top wall of the installation section 151 and the baffle 1 41 and the baffle 2 42.

[0081] like Figure 4 , Figure 5 As shown, one end of the screw sleeve 44 located outside the installation section 151 is closed, and a mechanical seal is formed between the screw sleeve 44 and the installation section 151. This prevents water from overflowing between the screw rod 43 and the screw sleeve 44, and between the screw sleeve 44 and the side wall of the installation section 151, thereby ensuring the sealing between the water volume regulating assembly 40 and the branch pipe 15.

[0082] To ensure uniformity of the total area cooling capacity in the fan assembly 20, as Figure 3 , Figure 8 As shown, a flow splitter assembly 60 is provided between the branch pipe 15 and the spray pipe 26; The flow dividing component 60 includes a column 61 disposed inside the branch pipe 15 . The column 61 is provided with drain holes 611 whose number is the same as that of the spray pipe 26 . The drain holes 611 are opposite to the water inlet of the spray pipe 26 .

[0083] In the technical solution of the cooling system for the circulating fan of the heat treatment furnace, a diversion component 60 is added, and the drain hole 611 divides the water flow into multiple streams with the same flow rate. The multiple streams flow into the corresponding spray pipes 26 respectively. By ensuring that the water consumption in the area corresponding to each spray pipe 26 is the same, the purpose of ensuring the uniformity of the cooling capacity of the total area is achieved.

[0084] To ensure accurate water usage in each area, Figure 8 , Fig. 9 As shown, an annular groove is provided on the outer wall of the column 61, and a sealing ring 2 is provided inside the annular groove, and the sealing ring 2 contacts the inner wall of the branch pipe 15. The setting of the sealing ring 2 makes the outer wall of the column 61 and the inner wall of the branch pipe 15 in close contact, preventing water from overflowing between the column 61 and the branch pipe 15, and ensuring the accuracy of water consumption in each area.

[0085] To achieve stable docking between the spray pipe 26 and the column 61, Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, the flow dividing assembly 60 further includes a connecting piece 62 which is connected to the branch pipe 15; The connecting piece 62 is provided with a hole 1 623 for accommodating the spray pipe 26 and a hole 2 624 for accommodating the column 61. The connecting piece 62 is connected to the branch pipe 15 through the hole 2 624. The number of holes 1 623 is consistent with the number of spray pipes 26. One ends of multiple holes 1 623 are connected and connected to the hole 2 624.

[0086] The column 61 is assembled in the second hole 624 opened on the connecting piece 62, and the spray pipe 26 is assembled in the first hole 623 opened on the connecting piece 62. The relative position of the spray pipe 26 and the column 61 is fixed by the connecting piece 62, and the stability is high.

[0087] To ensure the accuracy of the positions of the spray pipe 26 and the column 61 when they are connected, Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, the lower end of the column 61 extends axially to form a limiting sleeve 612; When the spray pipe 26 is docked with the column 61 , the spray pipe 26 is located inside the limiting sleeve 612 , and a plurality of spray pipes 26 are in conflict with each other, thereby ensuring the positional accuracy between the spray pipe 26 and the column 61 when they are docked.

[0088] To further ensure the accuracy of the positions of the spray pipe 26 and the column 61 when they are connected, Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 As shown, the limiting sleeve 612 extends radially to form a positioning strip 613, and the spray pipe 26 is provided with a positioning groove 261 matching the positioning strip 613; When the spray pipe 26 is connected to the column 61 , the positioning bar 613 is located inside the positioning groove 261 .

[0089] To facilitate the docking and assembly of the spray pipe 26 and the column 61, Fig.12 As shown, the connecting member 62 is a split structure, and the connecting member 62 includes an upper plate 621 and a lower plate 622 , the first hole 623 is distributed on the upper plate 621 and the lower plate 622 , and the second hole 624 is distributed on the upper plate 621 .

[0090] When the spray pipe 26 and the column 61 are docked and assembled, the column 61 is first inserted into the branch pipe 15, and the water inlet of the spray pipe 26 is aligned with the drain hole 611. At this time, the positioning strip 613 is located inside the positioning groove 261, and the lower plate 622 is placed under the upper plate 621. The positions of the lower plate 622 and the upper plate 621 are fixed, and the relative positions of the spray pipe 26 and the column 61 are fixed, and the assembly is completed.

[0091] To ensure the convenience during the assembly process, the upper plate 621 and the lower plate 622 are assembled in the simplest manner, such as Fig.12 As shown, the upper plate 621 and the lower plate 622 are assembled by bolts 625 .

[0092] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A cooling system for a circulating fan of a heat treatment furnace, comprising a water tank (10) for storing water inside, a plurality of fan assemblies (20), and a cooling tower (30), characterized in that: A pipe (11) is provided between the water inlet end 1 of the water tank (10) and the water outlet ends of the plurality of fan assemblies (20), a pipe (12) is provided between the water outlet end 1 of the water tank (10) and the water inlet end of the cooling tower (30), a pipe (13) is provided between the water outlet end 2 of the water tank (10) and the water inlet end of the cooling tower (30), a pipe (14) is provided between the water inlet end 2 of the water tank (10) and the water outlet end of the cooling tower (30), and pumps are provided on the pipe (11), the pipe (12), the pipe (13) and the pipe (14); The fan assembly (20) comprises a box body (21) with an opening at the upper end, and an upper cover (25) arranged above the box body (21); a fan (22) and a wet curtain (24) covering the upper side of the fan (22) are arranged inside the box body (21); a water storage chamber (23) is formed at the lower part of the box body (21); the water storage chamber (23) is connected to the first tube (11); a spray pipe (26) is distributed on the upper cover (25); the spray pipe (26) is connected to the second tube (12) via a branch pipe (15); and a spray hole is opened at the lower end of the spray pipe (26).

2. The cooling system for the circulating fan of a heat treatment furnace according to claim 1, characterized in that: The first water inlet end and the second water outlet end are both arranged at the upper part of the water tank (10), and the first water outlet end and the second water inlet end are both arranged at the lower part of the water tank (10); The dimensions of the water tank (10) are 2200 x 1200 x 1500 mm, and the water stored in the water tank (10) is soft water.

3. The cooling system for the circulating fan of a heat treatment furnace according to claim 1, characterized in that: The branch pipe (15) is provided with a water volume regulating component (40) and a flow sensor (50), and the water volume regulating component (40) is located between the second pipe (12) and the flow sensor (50).

4. The cooling system for the circulating fan of a heat treatment furnace according to claim 3, characterized in that: The branch pipe (15) is provided with a mounting section (151); The water volume regulating assembly (40) comprises a first baffle (41) and a second baffle (42) which are arranged inside the mounting section (151); the second baffle (42) moves back and forth in a horizontal direction relative to the first baffle (41).

5. The cooling system for the circulating fan of a heat treatment furnace according to claim 4, characterized in that: The first baffle (41) is connected to the inner wall of the mounting section (151); the second baffle (42) is connected to a screw rod (43); the screw rod (43) is threadedly engaged with a screw sleeve (44); one end of the screw sleeve (44) penetrates the side wall of the mounting section (151) and is rotationally engaged therewith; The baffle plate 1 (41) has a groove 1 (411) and a block 1 (412), the baffle plate 2 (42) has a groove 2 (421) and a block 2 (422), the block 1 (412) is inserted into the groove 2 (421) and slidably cooperates therewith, and the block 2 (422) is inserted into the groove 1 (411) and slidably cooperates therewith; The inner top wall of the installation section (151) is provided with a sealing ring 1, and the sealing ring 1 is in contact with the blocking piece 1 (41) and the blocking piece 2 (42); One end of the screw sleeve (44) located outside the installation section (151) is closed, and a mechanical seal is formed between the screw sleeve (44) and the installation section (151).

6. The cooling system for the circulating fan of a heat treatment furnace according to claim 1, characterized in that: A support rod (27) is provided below the spray pipe (26), and the support rod (27) and the upper cover (25) are assembled with screws.

7. The cooling system for the circulating fan of a heat treatment furnace according to claim 1, characterized in that: A plurality of the spray pipes (26) are provided, and the plurality of spray pipes (26) are respectively distributed in different areas of the upper cover (25); A flow splitter assembly (60) is provided between the branch pipe (15) and the spray pipe (26); The flow diversion component (60) comprises a column (61) arranged inside the branch pipe (15), wherein the column (61) is provided with a number of drain holes (611) that is the same as that of the spray pipe (26), and the drain holes (611) are opposite to the water inlet of the spray pipe (26).

8. The cooling system for the circulating fan of a heat treatment furnace according to claim 7, characterized in that: An annular groove is provided on the outer wall of the column (61), and a second sealing ring is provided inside the annular groove, the second sealing ring abutting against the inner wall of the branch pipe (15).

9. The cooling system for the circulating fan of a heat treatment furnace according to claim 7, characterized in that: The flow splitting assembly (60) further comprises a connecting piece (62) which is connected to the branch pipe (15); The connecting piece (62) is provided with a first hole (623) for accommodating the spray pipe (26) and a second hole (624) for accommodating the column (61); the connecting piece (62) is connected to the branch pipe (15) through the second hole (624); the number of the first holes (623) is the same as the number of the spray pipes (26); one end of a plurality of the first holes (623) is connected and connected to the second hole (624).

10. The cooling system for the circulating fan of a heat treatment furnace according to claim 9, characterized in that: The lower end of the column (61) extends axially to form a limiting sleeve (612); When the spray pipe (26) is butt-jointed with the column (61), the spray pipe (26) is located inside the limiting sleeve (612), and a plurality of spray pipes (26) are in conflict with each other; The limiting sleeve (612) extends radially to form a positioning strip (613), and the spray pipe (26) is provided with a positioning groove (261) matching the positioning strip (613); When the spray pipe (26) is butt-jointed with the column (61), the positioning strip (613) is located inside the positioning groove (261); The connecting member (62) is a split structure, comprising an upper plate (621) and a lower plate (622), the first hole (623) being distributed on the upper plate (621) and the lower plate (622), and the second hole (624) being distributed on the upper plate (621); The upper plate (621) and the lower plate (622) are assembled by bolts (625).

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