Cooling water recycling device of rolling mill

Abstract

The utility model discloses a cooling water recycling device of a rolling mill, which relates to the technical field of rolling mills and comprises a cooling water spraying component and a cooling water recycling component, the cooling water spraying component comprises a spraying head and a cooling water storage tank, and the cooling water recycling component comprises a cooling water collecting part, a cooling tower and a settling pond. The cooling water collecting part is connected with the cooling tower through a first recycling pipeline, a first pump body and a first valve are sequentially arranged on the first recycling pipeline, the cooling tower is connected with the settling pond through a second recycling pipeline, and a second pump body and a second valve are sequentially arranged on the second recycling pipeline; the sedimentation tank is connected with the cooling water storage tank through a third recovery pipeline, a third pump body and a third valve are sequentially arranged on the third recovery pipeline, and the cooling water collection part is arranged below a roller in the rolling mill, so that the problems that when an existing hot rolling mill is used, cooling water is not recycled, and water resources cannot be effectively utilized are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel rolling mills, in particular to a cooling water recycling device for steel rolling mills. Background Art

[0002] A rolling mill is a metal processing equipment used to process metal billets into the desired shape and size through rolling rollers. A rolling mill is usually composed of a roll stand, rolls, a transmission system, a cooling system, etc. Its working principle is to gradually flatten, stretch or press the metal billets into the desired shape through the rotation and pressure of the rolls. Among them, the hot rolling mill in the rolling mill is a device that heats the metal billets to a high temperature state and then performs rolling processing, and is usually used to produce large steel products. The rolls in the hot rolling mill will generate a lot of heat during the rolling process, so cooling water is needed to cool down to protect the rolls and steel.

[0003] The cooling method used in the existing hot rolling mill is to spray cooling water directly onto the rolls, thereby achieving the effect of cooling the rolls and steel. However, when the current hot rolling mill is in use, the used cooling water is usually directly discharged through a ditch or other means, and is not recycled. There is a problem that the cooling water is not recycled and water resources cannot be effectively utilized.

[0004] In the utility model with application number: 202021483425.X and publication number CN212494543U, a hot rolling mill and a hot rolling mill unit are disclosed. A spraying position and a dust extraction position located downstream of the spraying position are provided at the mill outlet; at the spraying position, an atomizing nozzle is arranged above and / or below the strip running channel; at the dust extraction position, a dust extraction air duct is arranged and the air extraction port of the dust extraction air duct is located above the strip running channel. However, there is still the problem that the cooling water is not recycled and the water resources cannot be effectively utilized. Utility Model Content

[0005] Based on this, in order to solve the above problems, the utility model proposes a rolling mill cooling water recycling device, which solves the problem that the current hot rolling mill does not recycle the cooling water when in use and cannot effectively utilize water resources.

[0006] The technical solution of the utility model is:

[0007] A cooling water recycling device for a steel rolling mill comprises a cooling water spray assembly and a cooling water recycling assembly, wherein the cooling water spray assembly comprises a spray head and a cooling water storage tank, wherein the cooling water storage tank and the spray head are connected via a spray pipe, wherein a spray valve and a spray pump are arranged on the spray pipe in sequence, and the spray valve is arranged on one end of the spray pipe close to the spray head, and the spray head is arranged above the rollers in the steel rolling mill;

[0008] The cooling water recovery component includes a cooling water collecting part, a cooling tower and a sedimentation tank. The cooling water collecting part is connected to the cooling tower through a first recovery pipeline, on which a first pump body and a first valve are sequentially arranged. The cooling tower is connected to the sedimentation tank through a second recovery pipeline, on which a second pump body and a second valve are sequentially arranged. The sedimentation tank is connected to the cooling water storage tank through a third recovery pipeline, on which a third pump body and a third valve are sequentially arranged. The cooling water collecting part is arranged below the rollers in the rolling mill.

[0009] The cooling water collecting part includes a connecting frame, a funnel and a filter box. The funnel is arranged between the connecting frame and the filter box, and the top of the funnel is connected to the bottom of the connecting frame, and the bottom of the funnel is connected to the top of the filter box. The filter box is used to filter the recovered cooling water, and one end of the first recovery pipe is connected to the filter box.

[0010] Preferably, the funnel member includes three collecting funnels, the connecting frame is provided with three leakage ports cooperating with the collecting funnels, the tops of the three collecting funnels are respectively connected to the bottom of the connecting frame, and the three collecting funnels are respectively cooperating with the three leakage ports.

[0011] Preferably, the filter box includes a box body and a box cover adapted to the box body, the box cover is detachably connected to the box body, a accommodating chamber is provided in the box body, at least one filter element is provided in the accommodating chamber, the filter element is used to filter the recovered cooling water, and three connecting ports which are arranged to cooperate with the collecting funnels are provided on the box cover, the bottoms of the three collecting funnels are connected to the box cover, and the three collecting funnels are respectively arranged to cooperate with the three connecting ports, and the bottoms of the collecting funnels are connected to the accommodating chamber through the connecting ports.

[0012] Preferably, a water outlet communicating with the accommodating chamber is provided on one side of the box body, and one end of the first recovery pipe is connected to the water outlet.

[0013] Preferably, the filter element includes a mounting frame and a double-layer filter screen arranged in the mounting frame, sliding blocks are provided on both sides of the mounting frame, and a sliding slot cooperating with the sliding block is provided on the inner wall of the box body. The sliding block on the mounting frame can be inserted into the sliding slot and slidably connected to the inner wall of the box body.

[0014] Preferably, a pair of lifting frames are provided on the top of the installation frame, and the lifting frames are respectively arranged on the sliding plug blocks on both sides of the installation frame.

[0015] Preferably, a plug-in slot cooperating with the lifting frame is provided at the bottom of the sliding plug-in block on the mounting frame.

[0016] Preferably, it also includes a steam condensation component, which includes a steam suction structure, a heat exchanger and a condensate storage tank. The steam suction structure is connected to the heat exchanger through a first steam pipe, on which a first valve body is provided. The heat exchanger is connected to the condensate storage tank through a second steam pipe, on which a first electric pump and a second valve body are provided in sequence. The condensate storage tank is connected to the cooling water storage tank through a third steam pipe, on which a second electric pump and a third valve body are provided in sequence. The steam suction structure is arranged above the rollers in the rolling mill and is arranged in cooperation with the spray head.

[0017] Preferably, the steam suction structure includes a suction shell, a condensation plate and a suction piece, a steam outlet is provided at the top of the suction shell, the steam outlet is connected to the first steam pipe, a steam flow channel is provided in the suction shell, the suction piece is installed in the steam flow channel and is detachably connected to the suction shell, the condensation plate is arranged at the bottom of the suction shell and is arranged in coordination with the bottom of the steam flow channel, the condensation plate is detachably connected to the suction shell by bolts, and a plurality of steam holes for steam to pass through are provided on the condensation plate.

[0018] Preferably, the suction member includes a mounting ring, a cross mounting frame, fan blades, a driving motor and a protective cover. The cross mounting frame is arranged in the mounting ring and fixedly connected to the mounting ring. The driving motor is arranged in the middle of the cross mounting frame, and the output shaft of the driving motor passes through the middle of the cross mounting frame and is rotatably connected to the cross mounting frame. The fan blades are arranged on one end of the output shaft of the driving motor passing through the cross mounting frame and are fixedly connected to the output shaft of the driving motor. The protective cover is sleeved on the outside of the driving motor and one end is fixedly connected to the cross mounting frame. A protective cover is provided at the other end of the protective cover, and one end of the protective cover is threadedly connected to the inner wall of the protective cover.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The utility model realizes the recycling of cooling water by setting a cooling water recycling component, which is conducive to making full use of water resources. When in use, the cooling water in the cooling water storage tank is connected to the spray head through a spray pipe, and the spray pump and the spray valve are used to control the spraying and closing of the cooling water, and then the cooling water is sprayed on the rollers of the rolling mill through the spray head, which plays a cooling role and reduces the temperature of the rollers and steel. The sprayed cooling water is collected by the cooling water collection part, and then connected to the cooling tower through the first recycling pipe for cooling. In the cooling tower, the cooling water is cooled and cooled. The cooling water after cooling and cooling flows into the sedimentation tank through the second recycling pipe. The sediment in the cooling water is precipitated to the bottom of the sedimentation tank. The clean cooling water is returned to the cooling water storage tank through the third recycling pipe to complete the recycling of cooling water. The utility model solves the problem that the current hot rolling mill does not recycle the cooling water when in use, and cannot effectively utilize water resources. The filter box is used to filter the larger solid impurity particles in the recycled cooling water, and the sedimentation tank is used to precipitate the smaller solid impurity particles in the recycled cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the framework structure of a rolling mill cooling water recycling device described in an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the cooling water collecting part described in the embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the exploded structure of the cooling water collecting part described in the embodiment of the utility model;

[0024] Figure 4 It is a schematic diagram of the exploded structure of the filter element described in the embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the structure of the filter element described in the embodiment of the utility model;

[0026] Figure 6 It is a structural schematic diagram of the steam suction structure described in the embodiment of the utility model;

[0027] Figure 7 It is a schematic cross-sectional structure diagram of the steam suction structure described in the embodiment of the utility model;

[0028] Figure 8 It is a partial structural schematic diagram of the steam suction structure described in the embodiment of the utility model;

[0029] Fig. 9 It is a schematic diagram of a partial explosion structure of the suction piece described in the embodiment of the utility model;

[0030] Description of reference numerals:

[0031] 10-cooling water spray assembly, 100-spray head, 101-cooling water storage tank, 102-spray pipe, 103-spray valve, 104-spray pump, 20-cooling water recovery assembly, 200-cooling water collection part, 201-cooling tower, 202-sedimentation tank, 203-first recovery pipe, 204-first pump body, 205-first valve, 206-second recovery pipe, 207-second pump body, 208-second valve, 209-third recovery pipe, 210-third pump body, 211-third valve, 212-connecting frame, 213-funnel, 214-filter box, 215-collecting funnel, 216-leakage port, 217-box, 218-box cover, 219-filter, 220-connecting port, 221-water outlet, 222-installation Mounting frame, 223-double-layer filter screen, 224-sliding plug-in block, 225-sliding slot, 226-lifting bracket, 227-plug-in slot, 30-steam condensation assembly, 300-steam suction structure, 301-heat exchanger, 302-condensation storage tank, 303-first steam pipe, 304-first valve body, 305-second steam pipeline, 306-first electric pump, 307-second valve body, 308-third steam pipeline, 309-second electric pump, 310-third valve body, 311-suction shell, 312-condensation plate, 313-suction member, 314-steam outlet, 315-steam flow channel, 316-steam hole, 317-mounting ring, 318-cross mounting bracket, 319-fan blades, 320-drive motor, 321-protective cover, 322-protective cover. DETAILED DESCRIPTION

[0032] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0033] Example:

[0034] like Figure 1 to Figure 2 As shown, in order to solve the above problems, this embodiment discloses a cooling water recycling device for a steel rolling mill, comprising a cooling water spray assembly 10 and a cooling water recycling assembly 20, wherein the cooling water spray assembly 10 comprises a spray head 100 and a cooling water storage tank 101, wherein the cooling water storage tank 101 is connected to the spray head 100 via a spray pipe 102, wherein a spray valve 103 and a spray pump 104 are sequentially arranged on the spray pipe 102, and the spray valve 103 is arranged on one end of the spray pipe 102 close to the spray head 100, and the spray head 100 is arranged above the roller 1 in the steel rolling mill;

[0035] The cooling water recovery component 20 includes a cooling water collecting part 200, a cooling tower 201 and a sedimentation tank 202. The cooling water collecting part 200 is connected to the cooling tower 201 through a first recovery pipe 203, on which a first pump body 204 and a first valve 205 are sequentially arranged. The cooling tower 201 is connected to the sedimentation tank 202 through a second recovery pipe 206, on which a second pump body 207 and a second valve 208 are sequentially arranged. The sedimentation tank 202 is connected to the cooling water storage tank 101 through a third recovery pipe 209, on which a third pump body 210 and a third valve 211 are sequentially arranged. The cooling water collecting part 200 is arranged below the roller 1 in the rolling mill.

[0036] The cooling water collecting part 200 includes a connecting frame 212, a funnel 213 and a filter box 214. The funnel 213 is arranged between the connecting frame 212 and the filter box 214, and the top of the funnel 213 is connected to the bottom of the connecting frame 212, and the bottom of the funnel 213 is connected to the top of the filter box 214. The filter box 214 is used to filter the recovered cooling water, and one end of the first recovery pipe 203 is connected to the filter box 214.

[0037] The utility model realizes the recycling of cooling water by setting a cooling water recycling component 20, which is conducive to making full use of water resources. When in use, the cooling water in the cooling water storage tank 101 is connected to the spray head 100 through the spray pipe 102, and the spray pump 104 and the spray valve 103 control the spraying and closing of the cooling water, and then the cooling water is sprayed on the roller 1 of the rolling mill through the spray head 100, which plays a cooling role and reduces the temperature of the roller 1 and the steel. The sprayed cooling water is collected by the cooling water collecting part 200, and then connected to the cooling tower 201 through the first recycling pipe 203 for cooling. In the cooling tower 201, the cooling water is cooled and cooled. The cooling water after cooling and cooling flows into the sedimentation tank 202 through the second recycling pipe 206, and the sediment in the cooling water is precipitated to the bottom of the sedimentation tank 202. The clean cooling water flows back to the cooling water storage tank 101 through the third recycling pipe 209, completing the recycling of cooling water. The invention solves the problem that the cooling water is not recycled and utilized during the use of the current hot rolling mill, and the water resources cannot be utilized effectively.

[0038] The filter box 214 is used to filter larger solid impurity particles in the recovered cooling water, the sedimentation tank 202 is used to precipitate smaller solid impurity particles in the recovered cooling water, and the cooling tower 201 is used to cool the recovered cooling water.

[0039] like Figure 3As shown, preferably, the funnel member 213 includes three collecting funnels 215, and the connecting frame 212 is provided with three leakage ports 216 which are arranged in cooperation with the collecting funnels 215, the tops of the three collecting funnels 215 are respectively connected to the bottom of the connecting frame 212, and the three collecting funnels 215 are respectively arranged in cooperation with the three leakage ports 216.

[0040] In order to facilitate the filtering of larger solid impurity particles in the recovered cooling water, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the filter box 214 includes a box body 217 and a box cover 218 adapted to the box body 217, the box cover 218 is detachably connected to the box body 217, a accommodating chamber is provided in the box body 217, at least one filter element 219 is provided in the accommodating chamber, the filter element 219 is used to filter the recovered cooling water, and three connecting ports 220 are provided on the box cover 218 for cooperating with the collecting funnel 215. The bottoms of the three collecting funnels 215 are connected to the box cover 218, and the three collecting funnels 215 are respectively cooperating with the three connecting ports 220, and the bottom of the collecting funnel 215 is connected to the accommodating chamber through the connecting port 220.

[0041] Preferably, a water outlet 221 communicating with the accommodating cavity is provided on one side of the box body 217 , and one end of the first recovery pipe 203 is connected to the water outlet 221 .

[0042] like Figures 4 to 5 As shown, preferably, the filter element 219 includes a mounting frame 222 and a double-layer filter screen 223 arranged in the mounting frame 222, sliding blocks 224 are provided on both sides of the mounting frame 222, and a sliding slot 225 cooperating with the sliding block 224 is provided on the inner wall of the box body 217, and the sliding block 224 on the mounting frame 222 can be inserted into the sliding slot 225 and slidably connected to the inner wall of the box body 217.

[0043] The double-layer filter screen 223 is provided with a water filter hole, which is used for the recycled cooling water to pass through and blocks the larger solid impurity particles in the recycled cooling water. The aperture of the water filter hole can be set according to actual needs.

[0044] When in use, the recovered cooling water is filtered in sequence through the double-layer filter screen 223, so as to filter out larger solid impurity particles in the recovered cooling water, thereby facilitating the reuse of the recovered cooling water.

[0045] Preferably, a pair of lifting frames 226 are provided on the top of the mounting frame 222, and the lifting frames 226 are respectively provided on the sliding plug blocks 224 on both sides of the mounting frame 222. The provision of the lifting frames 226 can facilitate the removal of the filter element 219, thereby facilitating the replacement of the filter element 219.

[0046] Preferably, a plug-in slot 227 cooperating with the lifting frame 226 is provided at the bottom of the sliding plug block 224 on the mounting frame 222 .

[0047] When in use, the lifting bracket 226 on one of the filter elements 219 can be inserted into the insertion slot 227 on another filter element 219, so as to facilitate the installation of more filter elements 219, thereby facilitating the full filtration of the recovered cooling water.

[0048] like Figure 1 As shown, since high-temperature water vapor is generated after the cooling water is sprayed onto the rolling roller 1, in order to facilitate the use of heat energy in the high-temperature water vapor, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that it also includes a steam condensation component 30, the steam condensation component 30 includes a steam suction structure 300, a heat exchanger 301 and a condensation storage tank 302, the steam suction structure 300 and the heat exchanger 301 are connected through a first steam pipe 303, and a first valve body 304 is provided on the first steam pipe 303, the heat exchanger 301 and the condensation storage tank 302 are connected through a second steam pipe 305, and a first electric pump 306 and a second valve body 307 are provided on the second steam pipe 305 in sequence, the condensation storage tank 302 and the cooling water storage tank 101 are connected through a third steam pipe 308, and a second electric pump 309 and a third valve body 310 are provided on the third steam pipe 308 in sequence, and the steam suction structure 300 is arranged above the rolling roller 1 in the rolling mill and is arranged in conjunction with the spray head 100.

[0049] The heat exchanger 301 can be connected to a user-side water outlet device. When in use, the heat exchanger 301 cools down the high-temperature water vapor, so that the water vapor condenses into cooling water and enters the condensation storage tank 302, and then is recycled to the cooling water storage tank 101, completing the utilization of the heat energy in the water vapor and the recovery of the water vapor.

[0050] A plurality of metal rods are provided in the condensation storage tank 302, and the metal rods are used to cool the condensation water.

[0051] like Figure 6 to Figure 7As shown, in order to facilitate the inhalation of water vapor, this embodiment is modified on the basis of the above embodiment, and the difference from the above embodiment is that the steam suction structure 300 includes an suction shell 311, a condensation plate 312 and a suction piece 313, a steam outlet 314 is provided on the top of the suction shell 311, and the steam outlet 314 is connected to the first steam pipe 303, a steam flow channel 315 is provided in the suction shell 311, the suction piece 313 is installed in the steam flow channel 315, and is detachably connected to the suction shell 311, the condensation plate 312 is arranged at the bottom of the suction shell 311, and is arranged in coordination with the bottom of the steam flow channel 315, the condensation plate 312 is detachably connected to the suction shell 311 by bolts, and a plurality of steam holes 316 for steam to pass are provided on the condensation plate 312.

[0052] like Figures 8 to 9 As shown, preferably, the suction member 313 includes a mounting ring 317, a cross mounting frame 318, a fan blade 319, a drive motor 320 and a protective cover 321. The cross mounting frame 318 is arranged in the mounting ring 317 and is fixedly connected to the mounting ring 317. The drive motor 320 is arranged in the middle of the cross mounting frame 318, and the output shaft of the drive motor 320 passes through the middle of the cross mounting frame 318 and is rotatably connected to the cross mounting frame 318. The fan blade 319 is arranged on one end of the output shaft of the drive motor 320 passing through the cross mounting frame 318, and is fixedly connected to the output shaft of the drive motor 320. The protective cover 321 is sleeved on the outside of the drive motor 320, and one end is fixedly connected to the cross mounting frame 318. The other end of the protective cover 321 is provided with a protective cover 322, and one end of the protective cover 322 is threadedly connected to the inner wall of the protective cover 321.

[0053] When in use, water vapor is collected by the suction member 313 into the suction housing 311. When entering the suction housing 311, it first contacts the condensation plate 312 to produce the first cooling, condenses part of the water vapor, and the condensed water in the water vapor falls back onto the roller 1. The remaining high-temperature water vapor passes through the steam hole 316 and then enters the heat exchanger 301 for heat exchange and cooling. The protective cover 321 is used to prevent water from entering the drive motor 320.

[0054] In order to facilitate the control of the first valve body 304, the first electric pump 306, the second valve body 307, the second electric pump 309, the third valve body 310, the drive motor 320, the first pump body 204, the first valve 205, the second pump body 207, the second valve 208, the third pump body 210, the third valve 211, the spray valve 103 and the spray pump 104, this embodiment is modified on the basis of the above embodiment, and the difference from the above embodiment is that the first valve body 304, the second valve body 307, the third valve body 310, the first valve 205, the second pump body 207, the second valve 208, the third pump body 210, the third valve 211, the spray valve 103 and the spray pump 104 The second valve 208, the third valve 211 and the spray valve 103 all adopt solenoid valves in the prior art. The actual model can be selected according to actual needs. It also includes a controller, which is used to control the opening or closing of the first valve body 304, the first electric pump 306, the second valve body 307, the second electric pump 309, the third valve body 310, the drive motor 320, the first pump body 204, the first valve 205, the second pump body 207, the second valve 208, the third pump body 210, the third valve 211, the spray valve 103 and the spray pump 104.

[0055] Working principle of this utility model:

[0056] When the utility model is in use, the cooling water in the cooling water storage tank 101 is connected to the spray head 100 through the spray pipe 102, and the spray pump 104 and the spray valve 103 are used to control the spraying and closing of the cooling water, and then the cooling water is sprayed on the roller 1 of the rolling mill through the spray head 100, which plays a cooling role and reduces the temperature of the roller 1 and the steel. The sprayed cooling water is collected by the cooling water collection part 200, and then connected to the cooling tower 201 through the first recovery pipe 203 for cooling. In the cooling tower 201, the cooling water is cooled and the cooling water after cooling flows into the sedimentation tank 202 through the second recovery pipe 206. The sediment in the cooling water is precipitated to the bottom of the sedimentation tank 202, and the clean cooling water is returned to the cooling water storage tank 101 through the third recovery pipe 209, completing the recycling of the cooling water.

[0057] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A rolling mill cooling water recycling device, characterized in that: The invention comprises a cooling water spray assembly (10) and a cooling water recovery assembly (20), wherein the cooling water spray assembly (10) comprises a spray head (100) and a cooling water storage tank (101), wherein the cooling water storage tank (101) and the spray head (100) are connected via a spray pipe (102), wherein a spray valve (103) and a spray pump (104) are sequentially arranged on the spray pipe (102), and the spray valve (103) is arranged at one end of the spray pipe (102) close to the spray head (100), and the spray head (100) is arranged above a roller (1) in a steel rolling mill; The cooling water recovery component (20) comprises a cooling water collection part (200), a cooling tower (201) and a sedimentation tank (202); the cooling water collection part (200) and the cooling tower (201) are connected via a first recovery pipe (203); a first pump body (204) and a first valve (205) are sequentially arranged on the first recovery pipe (203); the cooling tower (201) and the sedimentation tank (202) are connected via a second recovery pipe (206); a second pump body (207) and a second valve (208) are sequentially arranged on the second recovery pipe (206); the sedimentation tank (202) is connected to the cooling water storage tank (101) via a third recovery pipe (209); a third pump body (210) and a third valve (211) are sequentially arranged on the third recovery pipe (209); the cooling water collection part (200) is arranged below the rollers (1) in the rolling mill; The cooling water collecting part (200) comprises a connecting frame (212), a funnel (213) and a filter box (214); the funnel (213) is arranged between the connecting frame (212) and the filter box (214); the top of the funnel (213) is connected to the bottom of the connecting frame (212); the bottom of the funnel (213) is connected to the top of the filter box (214); the filter box (214) is used to filter the recovered cooling water; one end of the first recovery pipe (203) is connected to the filter box (214).

2. A rolling mill cooling water recycling device according to claim 1, characterized in that: The funnel member (213) comprises three collecting funnels (215); the connecting frame (212) is provided with three liquid leakage ports (216) arranged in cooperation with the collecting funnels (215); the tops of the three collecting funnels (215) are respectively connected to the bottom of the connecting frame (212); and the three collecting funnels (215) are respectively arranged in cooperation with the three liquid leakage ports (216).

3. A rolling mill cooling water recycling device according to claim 2, characterized in that: The filter box (214) comprises a box body (217) and a box cover (218) adapted to the box body (217); the box cover (218) is detachably connected to the box body (217); a receiving chamber is provided in the box body (217); at least one filter element (219) is provided in the receiving chamber; the filter element (219) is used to filter the recovered cooling water; three connection ports (220) are provided on the box cover (218) and are arranged in cooperation with the collecting funnel (215); the bottoms of the three collecting funnels (215) are connected to the box cover (218), and the three collecting funnels (215) are arranged in cooperation with the three connection ports (220) respectively; and the bottoms of the collecting funnels (215) are connected to the receiving chamber via the connection ports (220).

4. A rolling mill cooling water recycling device according to claim 3, characterized in that: A water outlet (221) communicating with the accommodating chamber is provided on one side of the box body (217), and one end of the first recovery pipe (203) is connected to the water outlet (221).

5. A rolling mill cooling water recycling device according to claim 4, characterized in that: The filter element (219) comprises a mounting frame (222) and a double-layer filter screen (223) arranged in the mounting frame (222); sliding blocks (224) are arranged on both sides of the mounting frame (222); a sliding slot (225) matched with the sliding block (224) is arranged on the inner side wall of the box (217); the sliding block (224) on the mounting frame (222) can be inserted into the sliding slot (225) and slidably connected with the inner side wall of the box (217).

6. A rolling mill cooling water recycling device according to claim 5, characterized in that: A pair of lifting frames (226) are provided on the top of the installation frame (222), and the lifting frames (226) are respectively arranged on the sliding plug blocks (224) on both sides of the installation frame (222).

7. A rolling mill cooling water recycling device according to claim 6, characterized in that: The bottom of the sliding plug block (224) on the installation frame (222) is provided with a plug-in slot (227) that cooperates with the lifting frame (226).

8. The rolling mill cooling water recycling device according to claim 1, characterized in that: The invention also comprises a steam condensation component (30), the steam condensation component (30) comprising a steam suction structure (300), a heat exchanger (301) and a condensation storage tank (302); the steam suction structure (300) and the heat exchanger (301) are connected via a first steam pipe (303), a first valve body (304) is provided on the first steam pipe (303); the heat exchanger (301) and the condensation storage tank (302) are connected via a second steam pipe (305), a first electric pump (306) and a second valve body (307) are provided on the second steam pipe (305) in sequence; the condensation storage tank (302) and the cooling water storage tank (101) are connected via a third steam pipe (308), a second electric pump (309) and a third valve body (310) are provided on the third steam pipe (308) in sequence; the steam suction structure (300) is arranged above the rollers (1) in the rolling mill and is arranged in cooperation with the spray head (100).

9. A rolling mill cooling water recycling device according to claim 8, characterized in that: The steam suction structure (300) comprises a suction shell (311), a condensation plate (312) and a suction piece (313); a steam outlet (314) is provided at the top of the suction shell (311); the steam outlet (314) is connected to the first steam pipe (303); a steam flow channel (315) is provided in the suction shell (311); the suction piece (313) is installed in the steam flow channel (315) and is detachably connected to the suction shell (311); the condensation plate (312) is arranged at the bottom of the suction shell (311) and is arranged in coordination with the bottom of the steam flow channel (315); the condensation plate (312) and the suction shell (311) are detachably connected by bolts; and a plurality of steam holes (316) for steam to pass are provided on the condensation plate (312).

10. A rolling mill cooling water recycling device according to claim 9, characterized in that: The suction member (313) comprises a mounting ring (317), a cross mounting frame (318), a fan blade (319), a driving motor (320) and a protective cover (321); the cross mounting frame (318) is arranged in the mounting ring (317) and is fixedly connected to the mounting ring (317); the driving motor (320) is arranged in the middle of the cross mounting frame (318); and the output shaft of the driving motor (320) passes through the middle of the cross mounting frame (318) and is connected to the cross mounting frame (319). 8) is rotatably connected, the fan blade (319) is arranged on one end of the output shaft of the driving motor (320) passing through the cross mounting frame (318), and is fixedly connected to the output shaft of the driving motor (320), the protective cover (321) is sleeved on the outside of the driving motor (320), and one end is fixedly connected to the cross mounting frame (318), the other end of the protective cover (321) is provided with a protective cover (322), and one end of the protective cover (322) is threadedly connected to the inner wall of the protective cover (321).

Images