Quenching equipment for prestressed steel strand

Abstract

The invention relates to the field of quenching of steel strands, and discloses quenching equipment for prestressed steel strands, which comprises a quenching box, material ports are formed in the upper parts of the left side surface and the right side surface of the quenching box, and two first wire guide wheels are mounted in each of the two material ports; when the quenched steel strand in the quenching box moves in the recycling box of the first water collecting structure, two knocking blocks on two sets of knocking structures are driven by the driving structure to continuously knock the square strand in the recycling box, so that residual water on the steel strand drips and is collected into a water receiving barrel for collection, waste of water resources is reduced, and the water recycling efficiency is improved. Through the arrangement of a second downward pressing structure, when the steel strand moves in the recycling box, residual water on the steel strand can be removed more thoroughly, the steel strand is in a U shape in the recycling box due to the downward moving effect of the steel strand in the second downward pressing structure, and then the steel strand can be better dripped and collected in cooperation with the gravity of the residual steel strand; and meanwhile, the working environment quality is also improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel strand quenching, and in particular to a quenching device for prestressed steel strands. Background Art

[0002] Steel strand is a steel product composed of multiple steel wires twisted together. The carbon steel surface can be coated with galvanized layer, zinc-aluminum alloy layer, aluminum layer, copper layer, epoxy resin, etc. as needed. When processing and producing steel strand, quenching equipment is required for quenching work;

[0003] The quenching equipment in the prior art, through the provision of inlet and outlet, hydraulic cylinder, fixed block, jack and transmission roller, allows the steel strand to enter the processing box through the inlet and outlet, and pass through the inside of the jack, and uses the hydraulic cylinder to adjust the height of the fixed block, so that the steel strand between the two fixed blocks is placed in the water storage chamber, so that the steel strand can be effectively extended into the cooling water to avoid the problem of rebound; through the provision of the exhaust fan and the exhaust hood, a large amount of smoke is generated during the water quenching process, and the smoke is extracted from the processing box through the exhaust fan and the exhaust hood to avoid the smoke in the processing box from remaining and being unable to be discharged;

[0004] However, after the steel strands are quenched in the water in the quenching box, cooling water will remain on the steel strands when they are removed from the quenching box. This will cause a waste of water resources when a large number of steel strands are quenched, and the residual water on the removed steel strands will drop directly, which will reduce the work quality. At the same time, when the exhaust fan draws out the flue gas generated during the quenching process, the high-temperature flue gas contains a large amount of water vapor, which will also cause a waste of water resources. Therefore, there is room for improvement. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a quenching device for prestressed steel strands.

[0006] The present invention provides a quenching device for prestressed steel strands using the following technical solution:

[0007] A quenching device for prestressed steel strands, comprising a quenching box, wherein a material port is provided at the upper part of the left and right sides of the quenching box, two first wire wheels are installed in the two material ports, and each group of two first wire wheels is distributed in the same vertical direction, a first pressing structure is provided at the upper part of the quenching box, a spraying structure is provided at the upper part of the left and right sides of the quenching box, an exhaust structure is provided at the middle part of the upper part of the quenching box, a first water collecting structure is provided at the right side of the quenching box at the position of the material port, and a collecting structure is provided at the lower part of the quenching box;

[0008] The first water collection structure includes a recovery box installed above the right side of the quenching box, the recovery box is connected to the material port on the right side, a second pressing structure is arranged in the middle of the recovery box, and knocking structures are arranged near the bottom of the left and right sides of the recovery box, a discharging frame is installed above the right side of the recovery box, and two second wire wheels are installed in the discharging frame, a leakage pipe is connected to the middle of the bottom of the recovery box, and a transparent water receiving bucket is tightened at the bottom end of the leakage pipe by threading, and a driving structure is arranged near the bottom of the front of the recovery box;

[0009] The knocking structure includes two knocking rods that movably pass through the left and right side surfaces of the recycling box, and a knocking block is installed on the ends of the two knocking rods that are close to each other. A spring is sleeved on each of the knocking rods, and the two ends of the spring are respectively connected to the knocking block and the inner wall of the recycling box. An end block is installed on the ends of the two knocking rods that are away from each other, and an extrusion rod is fixedly passed through the end block, and an extrusion wheel is rotatably sleeved at the front end of the extrusion rod.

[0010] Preferably, the driving structure includes convex plates connected to the edges on both sides of the front side of the recycling box, and rotating rods are respectively rotated and passed through the two convex plates, and a fixed sleeve is provided on the end of the rotating rod close to the knocking rod, and a plurality of extrusion strips are connected at equal angles on the side of the fixed sleeve, and a pulley is provided on the fixed sleeve on the other end of the two rotating rods, and a belt is tightly wrapped between the two pulleys. An installation frame is connected to the convex plate on the right side, and a motor is installed on the inner wall of the installation frame, and the output shaft of the motor is connected to the other end of the corresponding rotating rod.

[0011] Preferably, the second pressing structure includes a threaded sleeve fixed through the middle of the top of the recycling box, a screw rod rotatably passing through the threaded sleeve, a turntable is provided on the fixed sleeve on the top end of the screw rod, a U-shaped seat is rotatably mounted on the bottom end of the screw rod, a second pressing wheel is arranged in the U-shaped seat, and telescopic rods are fixedly connected to the front and rear edges of the U-shaped seat, and the top end of the telescopic rod is connected to the recycling box.

[0012] Preferably, the exhaust structure includes an exhaust fan installed in the middle of the top of the quenching box, the air inlet end of the exhaust fan is connected to an exhaust hood, the exhaust hood is arranged in the middle of the top of the quenching box, the air outlet end of the exhaust fan is connected to an exhaust pipe, and a second water collecting structure is installed at one end of the exhaust pipe.

[0013] Preferably, the second water collecting structure includes a recovery tube installed at one end of the exhaust pipe, a plurality of liquefaction plates are installed at equal intervals in the recovery tube, a water collecting box is installed below the recovery tube, and drainage grooves are provided on the recovery tube and the water collecting box below each liquefaction plate, a plurality of air outlets are provided on the liquefaction plate, and two connecting pipes are respectively connected to each liquefaction plate, and one end of the two groups of connecting pipes passing through the recovery tube is connected to two fixed pipes, one end of the fixed pipe is connected to the quenching box, and a retaining net is installed on the inner wall of one end of the fixed pipe connected to the quenching box.

[0014] Preferably, the first pressing structure includes hydraulic cylinders installed on the left and right sides of the quenching box, and the bottom ends of the two hydraulic cylinder output shafts inserted into the quenching box are connected to a lifting plate, and four vertical plates are connected below the lifting plate, and a first pressing wheel is installed at the bottom end of each vertical plate.

[0015] Preferably, the spraying structure includes a water pump installed at the two lower corners of the rear side of the quenching box, the water pump is connected to a water pump, one end of the water pump passes through the top of the quenching box, the bottom end of the water pump inserted into the quenching box is connected to a nozzle, and a row of water spray holes is provided on the nozzle.

[0016] Preferably, the collecting structure comprises a collecting cabinet inserted from below the front of the quenching box, a filter plate is installed on the lower inner wall of the collecting cabinet, and a handle is installed in the middle of the front of the collecting cabinet.

[0017] In summary, the present invention includes the following beneficial technical effects:

[0018] 1. The present invention is provided with a first water collecting structure, a knocking structure, a second pressing structure and a driving structure, so that when the steel strand quenched in the quenching box moves in the recovery box of the first water collecting structure, the driving structure drives two knocking blocks on the two groups of knocking structures to continuously knock the square strand in the recovery box, so that the residual water on the steel strand drops and is collected in the water receiving bucket for collection, thereby reducing the waste of water resources. In addition, the second pressing structure can not only delay the movement of the steel strand in the recovery box, but also remove the residual water on the steel strand more thoroughly. In addition, the downward movement of the steel strand in the second pressing structure makes the steel strand in a U shape in the recovery box, and then cooperates with the residual gravity itself to better drip and collect, and also improves the quality of the working environment;

[0019] 2. The present invention is provided with an exhaust structure and a second water collection structure, and multiple liquefaction plates with cooling water are passed through the second water collection structure, so that when the high-temperature flue gas is discharged on the liquefaction plate, the water vapor in the high-temperature flue gas will be liquefied on the liquefaction plate, and the liquefied water droplets can flow from the water leakage groove into the water collection box for collection, thereby further reducing the waste of water resources;

[0020] 3. The present invention is provided with two groups of spraying structures, by which the steel strands extending above the cooling water level in the quenching box can be sprayed and quenched, thereby improving the quality of quenching work; the present invention is provided with a collecting structure, which can collect impurities generated during the quenching process and facilitate centralized treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a quenching device for prestressed steel strands according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of the structure inside the quenching box in an embodiment of the present invention;

[0023] Figure 3 1 is a schematic diagram of the structure of the rear side of the quenching box in an embodiment of the present invention;

[0024] Figure 4 In the embodiment of the present invention Figure 3 A magnified view of the structure at A;

[0025] Figure 5 This is a schematic diagram of the structure inside the recovery cylinder in an embodiment of the present invention;

[0026] Figure 6 is a structural schematic diagram of the first water collection structure in an embodiment of the present invention;

[0027] Figure 7 In the embodiment of the present invention Figure 6 A magnified view of the structure at B;

[0028] Figure 8 Schematic diagram of the structure inside the recycling box in the embodiment of the present invention.

[0029] Description of the accompanying drawings: 1, quenching box; 2, material port; 3, first wire wheel; 4, recovery box; 5, leaking pipe; 6, water receiving bucket; 7, knocking rod; 8, end block; 9, extrusion rod; 10, knocking block; 11, spring; 12, convex plate; 13, installation frame; 14, motor; 15, rotating rod; 16, extrusion strip; 17, fixing sleeve; 18, belt; 19, second wire wheel; 20, discharge frame; 21, screw rod; 22, turntable; 23, threaded sleeve; 24, U-shaped seat; 25, second lower pressure wheel; 26, telescopic rod; 27, pulley; 28, vacuum pump; 29, exhaust pipe; 30, recovery cylinder; 31, liquefaction plate; 32, leakage trough; 33, water collecting box; 34, connecting pipe; 35, fixed pipe; 36, vacuum hood; 37, hydraulic cylinder; 38, lifting plate; 39, vertical plate; 40, first lower pressure wheel; 41, water pump; 42, water extraction pipe; 43, nozzle; 44, collection cabinet; 45, handle; 46, extrusion wheel. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-Figure 8 The present invention is described in further detail.

[0031] Reference Figure 1-Figure 8 The embodiment of the present invention discloses a quenching device for prestressed steel strands, including a quenching box 1, a drain pipe is connected to the bottom of the quenching box 1, a refrigerator is installed at the bottom of the left side of the quenching box 1, and a refrigeration block plugged into the quenching box 1 is connected to one side of the refrigerator by bolts, and a material port 2 is opened at the top of the left and right sides of the quenching box 1, and two first wire wheels 3 are installed in the two material ports 2, and each group of two first wire wheels 3 is distributed in the same vertical direction, a first downward pressing structure is arranged at the top of the quenching box 1, a spraying structure is arranged at the top of the left and right sides of the quenching box 1, an exhaust structure is arranged at the middle of the top of the quenching box 1, a first water collecting structure is arranged at the position of the material port 2 on the right side of the quenching box 1, and a collecting structure is arranged at the bottom of the quenching box 1;

[0032] The first water collection structure includes a recovery box 4 installed at the upper right side of the quenching box 1, the recovery box 4 is connected to the material port 2 on the right side, a second downward pressing structure is arranged in the middle of the recovery box 4, and knocking structures are arranged near the bottom of the left and right sides of the recovery box 4, a discharge frame 20 is installed at the upper right side of the recovery box 4, and two second wire wheels 19 are installed in the discharge frame 20, a leakage pipe 5 is connected to the middle of the bottom of the recovery box 4, and a transparent water receiving bucket 6 is tightened at the bottom end of the leakage pipe 5 through a thread, and a driving structure is arranged near the bottom of the front of the recovery box 4;

[0033] The knocking structure includes two knocking rods 7 that move through the left and right sides of the recycling box 4. The two knocking rods 7 are each installed with a knocking block 10 on one end close to each other. Each knocking rod 7 is sleeved with a spring 11. The two ends of the spring 11 are respectively connected to the knocking block 10 and the inner wall of the recycling box 4. The knocking block 10 is made of silicone material, which has the function of being resistant to high temperature and not easy to be damaged. In addition, during the knocking process, the damage problem of the steel strand is also reduced. The two knocking rods 7 are each installed with an end block 8 on one end away from each other. An extrusion rod 9 is fixedly passed through the end block 8, and an extrusion wheel 46 is rotatably sleeved at the front end of the extrusion rod 9.

[0034] The driving structure includes convex plates 12 connected to the edges of both sides of the front of the recycling box 4, and two convex plates 12 are respectively rotated through with rotating rods 15, and a fixed sleeve 17 is fixed on one end of the rotating rod 15 close to the knocking rod 7, and a plurality of extrusion strips 16 are connected to the side of the fixed sleeve 17 at equal angles on the circumference, and a pulley 27 is fixed on the other end of the two rotating rods 15, and a belt 18 is tightly sleeved between the two pulleys 27. The right convex plate 12 is connected to a mounting frame 13, and a motor 14 is installed on the inner wall of the mounting frame 13, and the output shaft of the motor 14 is connected to the other end of the corresponding rotating rod 15;

[0035] The second pressing structure includes a threaded sleeve 23 fixedly passed through the middle of the recycling box 4, a screw 21 is rotatably passed through the threaded sleeve 23, a rotating disk 22 is fixedly provided on the top of the screw 21, a U-shaped seat 24 is rotatably installed on the bottom end of the screw 21, a second pressing wheel 25 is arranged in the U-shaped seat 24, and a telescopic rod 26 is fixedly connected to the edges of the front and rear sides of the U-shaped seat 24, and the top of the telescopic rod 26 is connected to the recycling box 4. After the steel strand is quenched in the quenching box 1, the quenched steel strand moves in the recycling box 4, and the steel strand is bypassed under the second pressing wheel 25, which can extend the steel strand. The residence time in the recycling box 4 is determined by starting the motor 14 on the mounting frame 13. Under the action of the pulley 27 and the belt 18, the two groups of rotating rods 15, the fixed sleeve 17 and the extrusion strip 16 are driven to rotate. The extrusion wheel 46 is pushed by each group of multiple extrusion strips 16 to drive the overall movement of the knocking rod 7 and the knocking block 10. When the extrusion strip 16 is detached from the extrusion wheel 46, the spring 11 pulls the knocking block 10 to reset, and the steel strand can be knocked in the recycling box 4, so that the residual water on the steel strand after quenching can drip into the water receiving bucket 6 for collection, thereby reducing the waste of water resources.

[0036] See also Figure 1-Figure 5 The exhaust structure includes an exhaust fan 28 installed in the middle of the upper part of the quenching box 1, the air inlet end of the exhaust fan 28 is connected to an exhaust hood 36, the exhaust hood 36 is arranged in the middle of the upper part of the quenching box 1, the exhaust end of the exhaust fan 28 is connected to an exhaust pipe 29, and a second water collection structure is installed at one end of the exhaust pipe 29;

[0037] The second water collection structure includes a recovery tube 30 installed at one end of the exhaust pipe 29, a plurality of liquefaction plates 31 are installed at equal intervals in the recovery tube 30, a water collection box 33 is installed below the recovery tube 30, a water leakage groove 32 is provided on the recovery tube 30 and the water collection box 33 below each liquefaction plate 31, a plurality of air outlets are provided on the liquefaction plate 31, and two connecting pipes 34 are respectively connected to each liquefaction plate 31, and one end of the two connecting pipes 34 passes through the recovery tube 30 and is connected to two fixed pipes 35, one end of the fixed pipe 35 is connected to the quenching box 1, and the fixed pipe 35 is connected to the quenching box 1. A retaining net is installed on the inner wall of one end of the quenching box 1. When the steel strand is quenched in the quenching box 1, the vacuum fan 28 is started to pass the high-temperature flue gas into the recovery tube 30 through the vacuum hood 36 and the exhaust pipe 29. When the high-temperature flue gas passes through the liquefaction plate 31 in the recovery tube 30, since the liquefaction plate 31 is connected with the quenching box 1 through the connecting pipe 34 and the fixed pipe 35, the cooling water in the quenching box 1 is passed into the liquefaction plate 31. In this way, the water vapor in the high-temperature flue gas will be liquefied on the liquefaction plate 31, and the liquefied water droplets will drip from the leakage trough 32 to the water collecting tank 33 for collection, thereby further reducing the waste of water resources.

[0038] See also Figure 1 and Figure 2 The first pressing structure includes hydraulic cylinders 37 installed on the left and right sides of the quenching box 1. The bottom ends of the output shafts of the two hydraulic cylinders 37 inserted into the quenching box 1 are connected with lifting plates 38. Four vertical plates 39 are connected below the lifting plates 38. The bottom end of each vertical plate 39 is installed with a first lower pressing wheel 40. When the steel strand is quenched in the quenching box 1, the hydraulic cylinder 37 can be started to drive the lifting plate 38, the vertical plate 39 and the first lower pressing wheel 40 to move downward as a whole, and the steel strand is pressed into the cooling water in the quenching box 1 by the first lower pressing wheel 40 to perform quenching;

[0039] The spraying structure includes a water pump 41 installed at two corners below the rear side of the quenching box 1. The water pump 41 is connected to a water pump 42. One end of the water pump 42 passes through the top of the quenching box 1. The bottom of the water pump 42 inserted into the quenching box 1 is connected to a nozzle 43. The nozzle 43 is provided with a row of water spray holes. During the quenching process, the water pump 41 can be started to pass the cooling water in the quenching box 1 into the nozzle 43. The nozzle 43 sprays and quenches the portion of the steel strand extending above the cooling water level in the quenching box 1, so that the steel strand is cooled more thoroughly.

[0040] The collecting structure includes a collecting cabinet 44 inserted from the bottom of the front of the quenching box 1. The collecting cabinet 44 is sealed and detachably installed in the quenching box 1. A filter plate is installed on the lower inner wall of the collecting cabinet 44. A handle 45 is installed in the middle of the front of the collecting cabinet 44. The collecting cabinet 44 can be used to collect impurities generated during the quenching process. After the sewage in the quenching box 1 is drained, the collecting cabinet 44 can be removed from the quenching box 1 to centrally process the collected impurities.

[0041] The implementation principle of a quenching device for prestressed steel strands in an embodiment of the present invention is as follows: first, the steel strands are moved from between the two groups of first wire wheels 3, below the first lower pressure wheel 40, downward movement of the second lower pressure wheel 25, and between the two second wire wheels 19, the refrigerator is started, and the water in the quenching box 1 is cooled by the refrigeration block, and the cooling water in the quenching box 1 is passed from the fixed pipe 35 and the connecting pipe 34 to the hollow liquefied plate 31, and then the hydraulic cylinder 37 is started to drive the vertical plate 39 to move downward, and the first lower pressure wheel 4 is passed through the first lower pressure wheel 4. 0 Press the steel strand into the cooling water in the quenching box 1, so that the steel strand can be quenched in the quenching box 1 while moving. At the same time, the water pump 41 can be started to pass the cooling water in the quenching box 1 into the nozzle 43, and the nozzle 43 sprays and quenches the portion of the steel strand extending above the cooling water level in the quenching box 1, so that the steel strand is cooled more thoroughly, and the quenched steel strand moves in the recovery box 4, and the motor 14 on the mounting frame 13 is started. Under the action of the pulley 27 and the belt 18, The two groups of rotating rods 15, the fixing sleeve 17 and the extruding strips 16 are driven to rotate, and the extruding wheels 46 are extruded and pushed by each group of multiple extruding strips 16, so as to drive the overall movement of the knocking rod 7 and the knocking block 10. When the extruding strips 16 are separated from the extruding wheels 46, the spring 11 pulls the knocking block 10 to reset, and the steel strands can be knocked in the recycling box 4, so that the residual water on the steel strands after quenching can drip into the water receiving bucket 6 for collection, thereby reducing the waste of water resources and improving the quality of the working environment. At the same time, the vacuum pump 2 can also be started. 8. The high-temperature flue gas is introduced into the recovery tube 30 through the exhaust hood 36 and the exhaust pipe 29. When the high-temperature flue gas passes through the liquefaction plate 31 in the recovery tube 30, since the liquefaction plate 31 is connected with the quenching box 1 through the connecting pipe 34 and the fixed pipe 35, the cooling water in the quenching box 1 is introduced into the liquefaction plate 31. In this way, the water vapor in the high-temperature flue gas will be liquefied on the liquefaction plate 31, and the liquefied water droplets will drip from the leakage groove 32 to the water collecting box 33 for collection, thereby further reducing the waste of water resources and reducing the quenching cost.

[0042] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quenching device for prestressed steel strands, comprising a quenching box (1), characterized in that: The quenching box (1) is provided with a material port (2) at the top of both left and right sides, and two first wire wheels (3) are installed in both material ports (2), and each group of two first wire wheels (3) are distributed in the same vertical direction. A first downward pressing structure is provided at the top of the quenching box (1), and a spraying structure is provided at the top of both left and right sides of the quenching box (1). An exhaust structure is provided at the middle of the top of the quenching box (1). A first water collecting structure is provided at the position of the material port (2) on the right side of the quenching box (1), and a collecting structure is provided at the bottom of the quenching box (1); The first water collecting structure comprises a recovery box (4) installed above the right side of the quenching box (1), the recovery box (4) and the material port (2) on the right are connected to each other, a second downward pressing structure is arranged in the middle of the recovery box (4), and knocking structures are arranged near the bottom of the left and right sides of the recovery box (4), a discharge frame (20) is installed above the right side of the recovery box (4), and two second guide wheels (19) are installed in the discharge frame (20), a leakage pipe (5) is connected to the middle of the bottom of the recovery box (4), and the bottom end of the leakage pipe (5) is screwed with a transparent water receiving bucket (6), and a driving structure is arranged near the bottom of the front of the recovery box (4); The knocking structure comprises two knocking rods (7) movably passing through the left and right side surfaces of the recycling box (4); a knocking block (10) is installed on the ends of the two knocking rods (7) close to each other; a spring (11) is sleeved on each of the knocking rods (7); the two ends of the spring (11) are respectively connected to the knocking block (10) and the inner wall of the recycling box (4); an end block (8) is installed on the ends of the two knocking rods (7) away from each other; an extrusion rod (9) is fixedly passed through the end block (8); and an extrusion wheel (46) is rotatably sleeved at the front end of the extrusion rod (9).

2. The quenching equipment for prestressed steel strand according to claim 1, characterized in that: The driving structure comprises convex plates (12) connected to the edges of both sides of the front side of the recycling box (4), and rotating rods (15) are respectively rotated and passed through the two convex plates (12), and a fixed sleeve (17) is fixed on one end of the rotating rod (15) close to the knocking rod (7), and a plurality of extrusion strips (16) are connected to the side of the fixed sleeve (17) at equal angles on the circumference, and a belt pulley (27) is fixed on the other end of the two rotating rods (15), and a belt (18) is tightly sleeved between the two belt pulleys (27). The convex plate (12) on the right side is connected to a mounting frame (13), and a motor (14) is installed on the inner wall of the mounting frame (13), and the output shaft of the motor (14) is connected to the other end of the corresponding rotating rod (15).

3. The quenching equipment for prestressed steel strand according to claim 1, characterized in that: The second downward pressing structure comprises a threaded sleeve (23) fixedly passing through the middle of the upper part of the recovery box (4), a screw rod (21) rotatably passing through the threaded sleeve (23), a sleeve fixed on the top end of the screw rod (21) is provided with a turntable (22), a U-shaped seat (24) is rotatably mounted on the bottom end of the screw rod (21), a second downward pressing wheel (25) is arranged in the U-shaped seat (24), and telescopic rods (26) are fixedly connected to the front and rear edges of the upper part of the U-shaped seat (24), and the top end of the telescopic rod (26) is connected to the recovery box (4).

4. The quenching equipment for prestressed steel strand according to claim 1, characterized in that: The exhaust structure comprises an exhaust fan (28) installed in the middle of the upper part of the quenching box (1); the air inlet end of the exhaust fan (28) is connected to an exhaust hood (36); the exhaust hood (36) is arranged in the middle of the upper part of the quenching box (1); the air outlet end of the exhaust fan (28) is connected to an exhaust pipe (29); and a second water collecting structure is installed at one end of the exhaust pipe (29).

5. The quenching equipment for prestressed steel strand according to claim 4, characterized in that: The second water collection structure comprises a recovery tube (30) installed at one end of the exhaust pipe (29), a plurality of liquefaction plates (31) are installed at equal intervals in the recovery tube (30), a water collection box (33) is installed below the recovery tube (30), a water leakage groove (32) is provided on the recovery tube (30) and the water collection box (33) below each liquefaction plate (31), a plurality of air outlets are provided on the liquefaction plate (31), two connecting pipes (34) are respectively connected to each liquefaction plate (31), one end of the two groups of connecting pipes (34) passing through the recovery tube (30) is connected to two fixed pipes (35), one end of the fixed pipe (35) is connected to the quenching box (1), and a retaining net is installed on the inner wall of one end of the fixed pipe (35) connected to the quenching box (1).

6. The quenching equipment for prestressed steel strand according to claim 1, characterized in that: The first downward pressing structure comprises hydraulic cylinders (37) installed on the left and right sides of the quenching box (1), and the bottom ends of the output shafts of the two hydraulic cylinders (37) inserted into the quenching box (1) are connected to a lifting plate (38), and the bottom of the lifting plate (38) is connected to four vertical plates (39), and the bottom end of each vertical plate (39) is installed with a first downward pressing wheel (40).

7. The quenching equipment for prestressed steel strand according to claim 1, characterized in that: The spraying structure comprises a water pump (41) installed at two corners below the rear side of the quenching box (1), the water pump (41) is connected to a water pumping pipe (42), one end of the water pumping pipe (42) passes through the top of the quenching box (1), and the bottom end of the water pumping pipe (42) inserted into the quenching box (1) is connected to a nozzle (43), and a row of water spray holes is provided on the nozzle (43).

8. The quenching equipment for prestressed steel strand according to claim 1, characterized in that: The collecting structure comprises a collecting cabinet (44) inserted from below the front of the quenching box (1), a filter plate is installed on the lower inner wall of the collecting cabinet (44), and a handle (45) is installed in the middle of the front of the collecting cabinet (44).

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