Forming and cooling device for spiral steel pipe

Abstract

The invention discloses a forming and cooling device for a spiral steel pipe, and relates to the technical field of spiral steel pipe formation.The forming and cooling device for the spiral steel pipe comprises a cart, a liquid mixer, a water pump and two long straight pipes, and a water heater and a cold water tank are fixedly installed on the cart; a water inlet of the water pump is communicated with a water outlet pipe in the liquid mixer through a guide pipe, and the two long straight pipes are communicated with a water outlet of the water pump through a flow divider. Cooling can be started in time according to the actual temperature of the spiral steel pipe, the cooling speed can be controlled by adjusting the water flow and the temperature, compared with natural cooling, the cooling time is greatly shortened, and therefore the production efficiency of the spiral steel pipe is improved; the temperature of cooling water can be accurately controlled between 20 DEG C and 40 DEG C, the situation that the quality and performance of the spiral steel pipe are affected due to the fact that the water temperature is too low or too high is avoided, and the welding quality and the forming effect are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of spiral steel pipe forming, and in particular to a forming and cooling device for a spiral steel pipe. Background Art

[0002] The forming of spiral steel strip is a key link in the production of spiral steel pipes. First of all, high-quality steel strip raw materials are selected, and the material must have good strength, toughness and weldability. In the forming process, the steel strip is transformed into a tubular structure through a series of processing steps. First, the edge of the steel strip is finely processed. Usually, a milling machine is used to mill it into a specific groove shape to prepare for subsequent welding. Then, the steel strip enters the forming machine and is gradually bent into a tubular shape by multiple forming rollers according to a predetermined spiral angle. In this process, the position and angle of the rollers need to be accurately adjusted to ensure the bending accuracy of the steel strip. The edges of the formed spiral steel strip are close to each other, creating conditions for welding. Welding uses advanced welding technology, such as submerged arc welding, to make the weld firm and uniform. The entire forming process requires strict control of various parameters to ensure the dimensional accuracy, mechanical properties and welding quality of the spiral steel strip, providing a reliable technical basis for subsequent applications; the temperature of the spiral steel pipe just welded is high and needs to be cooled naturally. At this stage, the steel pipe relies on its own heat dissipation and convection of the surrounding air to cool down. The natural cooling time is relatively long, but it can avoid excessive internal stress in the steel pipe due to rapid cooling.

[0003] However, the natural cooling of the spiral steel strip in the prior art takes a long time, which seriously affects the production efficiency of the spiral steel strip. It cannot be cooled directly by spraying water. If the water temperature is too low, the spiral steel pipe may cool too quickly, resulting in excessive internal stress, affecting the quality and performance of the spiral steel pipe. If the water temperature is too high, it may lead to poor cooling effect, affecting the welding quality and the forming effect of the spiral steel pipe. In order to address the deficiencies of the prior art, we propose a forming cooling device for a spiral steel pipe that can control the water spraying temperature. Summary of the invention

[0004] The main purpose of the present invention is to provide a forming and cooling device for a spiral steel pipe, which can effectively solve the problems in the background technology.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A forming and cooling device for a spiral steel pipe comprises: a cart, a liquid mixer, a water pump and two long straight pipes; The cart is fixedly mounted with a water heater and a cold water tank, the liquid mixer is mounted on the upper end of the cart, and the lower end of the liquid mixer is provided with two symmetrical water inlet pipes, the two water inlet pipes are respectively connected with the water heater and the drain outlet at the lower end of the cold water tank through a hose, the water pump is fixedly mounted above the cart, the water inlet of the water pump is connected with the water outlet pipe in the liquid mixer through a conduit, the two long straight pipes are connected with the water outlet of the water pump through a diverter, and are fixedly connected to the cart, and the ends of the two long straight pipes are respectively arranged on the inner and outer sides of the spiral steel pipe; The two long straight tubes are respectively composed of steel tube one and steel tube two, the ends of which are respectively fixedly connected to porous spray head one and porous spray head two, and a plurality of tie rods are fixedly installed on the periphery of the head ends of steel tube one and steel tube two, and are fixedly installed on the top of the cart.

[0006] Preferably, the liquid mixer includes a cylinder, a cover plate, a rotating shaft, and an arc-shaped sealing valve plate. The top ends of the two water inlet pipes are fixedly connected to the lower end of the cylinder. The outer wall of the arc-shaped sealing valve plate and the inner wall of the cylinder fit each other. A plurality of connecting rods are fixedly connected between the rotating shaft and the arc-shaped sealing valve plate. The rotating shaft is rotatably installed on the central axis of the cylinder. The cover plate is closed and installed on the opening of the cylinder. The water outlet pipe is fixedly installed on the cover plate.

[0007] Preferably, the liquid mixer also includes a steering gear and a second temperature sensor, the steering gear and the second temperature sensor are fixedly connected to the cover plate, the output shaft of the steering gear and the rotating shaft are coaxially fixedly connected, a control module is fixedly installed on the top of the cart, a temperature controller is fixedly installed on the water heater, and the temperature controller, the second temperature sensor and the steering gear are all signal-connected to the control module.

[0008] Preferably, a cylindrical support rod is fixedly installed below the second steel pipe, the cylindrical support rod is fixedly connected to the top of the cart, a rotating rod is coaxially installed inside the cylindrical support rod, a second fan blade is fixedly installed at the end of the rotating rod, and a motor is fixedly installed at the top of the cart, and the output shaft of the motor is fixedly connected to the rotating rod through a coupling.

[0009] Preferably, a support roller frame is coaxially arranged on one side of the second fan blade, the support roller frame is rotatably connected to the rotating rod, and a plurality of round rollers are rotatably mounted on the periphery of the support roller frame.

[0010] Preferably, a round rod is fixedly installed above the steel pipe 1, and a temperature sensor 1 is vertically fixedly installed at the end of the round rod, and the temperature sensor 1 is connected to the control module for signal connection.

[0011] Preferably, a sealing block is fixedly filled and installed at the upper end of the inner cavity of the cylinder, and a fan-shaped water mixing cavity is reserved below the inner cavity of the cylinder.

[0012] Preferably, an hourglass-shaped roller is rotatably mounted below the first steel pipe via a bracket.

[0013] Preferably, a water level gauge is fixedly mounted on one side of the water heater and the cold water tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Improve production efficiency The present invention can start cooling in time according to the actual temperature of the spiral steel pipe, use a water pump to extract the mixed water from the liquid mixer and transport it to the diverter, the diverter diverts the water to steel pipe one and steel pipe two, and cools the inner and outer sides of the spiral steel pipe respectively, the cooling efficiency is faster, and the cooling speed can be controlled by adjusting the water flow rate and temperature. Compared with natural cooling, the cooling time is greatly shortened, thereby improving the production efficiency of the spiral steel pipe, the steam and accumulated water generated by the spray cooling of the inner ring of the spiral steel pipe are driven by the output shaft of the motor to rotate rapidly, and the air at the bent working end of the spiral steel pipe is extracted and blown to the end, one is to disperse the spray of the porous spray head two more evenly, and the other is to blow the water and steam accumulated in the spiral pipe to the end of the spiral pipe for discharge, so as to avoid the backflow of the accumulated water in the spiral pipe and cool the spiral pipe in advance.

[0015] 2. Accurate temperature control improves product quality The present invention can accurately control the temperature of cooling water between 20°C and 40°C through the cooperation of a liquid mixer, a temperature sensor and a control module, thereby avoiding the influence of too low or too high water temperature on the quality and performance of the spiral steel pipe, preventing the internal stress caused by too fast cooling speed from causing defects such as cracks and deformation in the steel pipe, and ensuring a good cooling effect, guaranteeing the welding quality and the forming effect. When the water pump is working, the water flowing in the water outlet pipe pushes the fan blade 1 to drive the stirring rod to rotate in the fan-shaped water mixing chamber, further fully mixing the cold water and the hot water, and ensuring the accuracy of the temperature detected by the temperature sensor 2, so that the temperature of the cooling water can be controlled more accurately, the stability and reliability of the cooling process of the spiral steel pipe can be improved, and the poor cooling effect and the adverse effect on the quality of the spiral steel pipe due to uneven water temperature can be avoided.

[0016] 3. Uniform cooling ensures stable performance The diverter transports the mixed cooling water to steel pipe one and steel pipe two, and sprays cooling on the inside and outside of the spiral steel pipe respectively. At the same time, the spiral steel pipe is in a rotating state, so that the porous spray head can spray more evenly onto the inner and outer surfaces of the steel pipe, achieving uniform cooling and ensuring the stable performance of all parts of the spiral steel pipe.

[0017] 4. Automatic control reduces labor costs The temperature of the entire cooling process is detected by the temperature sensor and fed back to the control module. The control module automatically controls the servo to adjust the water temperature, control the water pump flow and the operation of the motor, etc., realizing automatic cooling, reducing manual intervention and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The present invention Figure 2 A magnified schematic diagram of circle A; Figure 4 The present invention Figure 2 A magnified schematic diagram of circle B; Figure 5 is an exploded view of the liquid mixer of the present invention; Figure 6 It is a structural schematic diagram of the liquid mixer in the present invention; Figure 7 It is a working schematic diagram of the porous spray head 1 and the porous spray head 2 in the present invention; Figure 8 is a schematic structural diagram of a liquid mixer in Example 2 of the present invention; Fig. 9 Schematic diagram of the structure of the agitator of the liquid mixer in Example 2 of the present invention.

[0019] In the figure: 1, cart; 2, control module; 3, water heater; 4, steel pipe 1; 5, porous spray head 1; 6, round rod; 7, temperature sensor 1; 8, bracket; 9, hourglass-shaped roller; 10, cold water tank; 11, temperature controller; 12, motor; 13, cylindrical support rod; 14, steel pipe 2; 15, hose; 16, water pump; 17, liquid mixer; 1701, cylinder; 1702, sealing block; 1703, fan-shaped water mixing chamber; 1704, rotating shaft; 1705, arc Sealing valve plate; 1706, connecting rod; 1707, cover plate; 1708, water outlet pipe; 1709, round hole; 1710, socket; 1711, temperature sensor 2; 1712, servo; 1713, water inlet pipe; 1714, regular octagonal frame; 1715, fan blade 1; 1716, fixing rod; 1717, stirring rod; 18, diverter; 19, water level meter; 20, porous spray head 2; 21, rotating rod; 22, fan blade 2; 23, supporting roller frame; 24, round roller. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0021] Embodiment 1: like Figure 1-7 As shown, a spiral steel pipe forming cooling device includes a cart 1, on which a water heater 3 and a cold water tank 10 are fixedly installed in parallel, respectively for storing hot water and cold water, which are mixed with each other to achieve the required water temperature. Generally speaking, the temperature of the mixed cooling water is usually more suitable between 20°C and 40°C. If the water temperature is too low, the spiral steel pipe may be cooled too quickly, resulting in excessive internal stress, affecting the quality and performance of the spiral steel pipe. If the water temperature is too high, the cooling effect may be poor, affecting the welding quality and the forming effect of the spiral steel pipe. refer to Figure 3 A water level gauge 19 is fixedly installed on one side of the water heater 3 and the cold water tank 10. The water level gauge 19 is mainly used for the staff to observe the water in the inner cavity of the water heater 3 and the cold water tank 10 more intuitively. The tops of the water heater 3 and the cold water tank 10 are fixedly connected with water injection pipes, and a temperature controller 11 is fixedly installed on the water heater 3. In the actual production process of spiral steel pipes, since the molding time of spiral steel pipes is long and the water consumption is relatively large, the water injection pipes at the tops of the water heater 3 and the cold water tank 10 can be directly connected to the nearby water supply tap water pipes through water pipes, so as to always ensure that there is enough water in the inner cavity of the water heater 3 and the cold water tank 10.

[0022] In this embodiment, reference may be made to Figure 3 A liquid mixer 17 is fixedly mounted on the upper end of the cart 1, and two symmetrical water inlet pipes 1713 are arranged at the lower end of the liquid mixer 17. The two water inlet pipes 1713 are connected to the water heater 3 and the drain outlet at the lower end of the cold water tank 10 through the hose 15 respectively; refer to Figure 5-6 The liquid mixer 17 includes a cylinder 1701, a cover plate 1707, a rotating shaft 1704, and an arc-shaped sealing valve plate 1705. The cylinder 1701 is the main part of the liquid mixer 17. A sealing block 1702 is fixedly filled and installed at the upper end of its inner cavity. A fan-shaped water mixing cavity 1703 is reserved below the inner cavity of the cylinder 1701. The sealing block 1702 is mainly used to reduce the inner cavity space of the cylinder 1701. The reduced space can more quickly complete the mixing of cold water and hot water. The top ends of the two water inlet pipes 1713 are fixedly connected to the cylinder 17. 01, the outer wall of the arc-shaped sealing valve plate 1705 and the inner wall of the cylinder 1701 are fitted with each other, a plurality of connecting rods 1706 are fixedly connected between the rotating shaft 1704 and the arc-shaped sealing valve plate 1705, the rotating shaft 1704 is rotatably mounted on the central axis of the cylinder 1701, a circular hole 1709 is provided at the center of the cover plate 1707, the rotating shaft 1704 is coaxially rotatably mounted in the circular hole 1709, the cover plate 1707 is closed and mounted on the opening of the cylinder 1701, and the water outlet pipe 1708 is fixedly mounted on the cover plate 1707; refer to Figure 5 The liquid mixer 17 also includes a steering gear 1712 and a second temperature sensor 1711. A socket 1710 is provided below the circular hole 1709. The socket 1710 and the fan-shaped water mixing chamber 1703 are communicated with each other. The temperature probe in the second temperature sensor 1711 is fixedly installed in the socket 1710. The steering gear 1712 and the second temperature sensor 1711 are fixedly connected to the cover plate 1707. The output shaft of the steering gear 1712 and the rotating shaft 1704 are coaxially fixedly connected. A control module 2 is fixedly installed on the top of the cart 1. The control module 2 is specifically composed of a programmable logic controller, and the temperature controller 11, the second temperature sensor 1711, and the steering gear 1712 are all connected to the control module 2 for signal connection.

[0023] In this embodiment, reference Figure 3 A water pump 16 is also fixedly installed on the upper end of the cart 1. The water inlet of the water pump 16 is connected to the water outlet pipe 1708 in the liquid mixer 17 through a conduit. The water outlet of the water pump 16 is fixedly connected to a diverter 18 through a conduit. The diverter 18 has two water outlet branches, which are respectively fixedly connected to a long straight pipe. The long straight pipe is fixedly connected to the cart 1, and the ends of the two long straight pipes are respectively arranged on the inner and outer sides of the spiral steel pipe, that is, the function of the diverter 18 is to divert the water transported by the water pump 16 to the two long straight pipes, and cool the inner and outer sides of the spiral steel pipe respectively; refer to Figure 3 and Figure 4 The two long straight pipes are respectively composed of a steel pipe 14 and a steel pipe 2 14. The steel pipe 14 is arranged on the outside of the spiral steel pipe, and the steel pipe 2 14 is arranged on the inside of the spiral steel pipe. An hourglass-shaped roller 9 is rotatably installed below the steel pipe 14 through a bracket 8. The hourglass-shaped roller 9 is rollingly installed on the upper surface of the spiral steel pipe, and is mainly used to support the end of the steel pipe 2 14 on the spiral steel pipe. A round rod 6 is fixedly installed above the steel pipe 14, and a temperature sensor 17 is vertically fixedly installed at the end of the round rod 6. The temperature sensor 17 is connected to the control module 2 for signal connection. The ends of the steel pipe 14 and the steel pipe 2 14 are respectively fixedly connected with a porous spray head 15 and a porous spray head 20; refer to Figure 1 and Figure 4 , the porous spray head 1 5 is vertically downward and is arranged just above the spiral steel pipe, and is used to spray water evenly on the outer surface of the spiral steel pipe. The porous spray head 2 20 is vertically upward and is used to spray water evenly on the inner surface of the spiral steel pipe. In the actual production process of the spiral steel pipe, the spiral steel pipe is in a state of spiral rotation and advancement, so that the porous spray head 1 5 and the porous spray head 2 20 can be sprayed more evenly on the outer side and inner wall of the spiral steel pipe for water cooling, and the mist spray is evaporated to absorb heat, which accelerates the heat dissipation, and the outer periphery of the head end of the steel pipe 1 4 and the steel pipe 2 14 are fixedly installed with a plurality of tie bars, which can be referred to Figure 1 , Figure 3 and Figure 4 At the position of the middle steel pipe 1 4 and the second steel pipe 14 , the tie rod is mainly used to increase the bending resistance of the steel pipe 1 4 and the second steel pipe 14 , and is fixedly installed at the top of the cart 1 .

[0024] In this embodiment, reference Figure 3 and Figure 4 A cylindrical support rod 13 is fixedly installed below the second steel pipe 14, and the cylindrical support rod 13 is fixedly connected to the top of the cart 1. A rotating rod 21 is coaxially installed in the cylindrical support rod 13, and a second fan blade 22 is fixedly installed at the end of the rotating rod 21. A motor 12 is fixedly installed on the top of the cart 1. The motor 12 is connected to the control module 2 through a wire, and the output shaft of the motor 12 is fixedly connected to the rotating rod 21 through a coupling. A support roller frame 23 is coaxially arranged on one side of the second fan blade 22, and the support roller frame 23 is rotatably connected to the rotating rod 21. A plurality of round rollers 24 are rotatably installed on the periphery of the support roller frame 23, and the support roller frame 23 is rotatably installed in the inner ring of the spiral steel pipe through the plurality of round rollers 24; When the motor 12 is powered on, the output shaft of the motor 12 can drive the fan blade 22 to rotate rapidly through the rotating rod 21, and extract the air from the bent working end of the spiral steel pipe and blow it to the end. Firstly, it is used to disperse the spray of the porous spray head 20 more evenly, and secondly, it is used to blow the water and steam accumulated in the spiral pipe to the end of the spiral pipe for discharge, so as to avoid the backflow of the accumulated water in the spiral pipe and cool the spiral pipe in advance.

[0025] refer to Figure 7 When the control module 2, water heater 3, temperature sensor 17, temperature controller 11, motor 12, water pump 16, temperature sensor 2 1711, and steering gear 1712 in the present invention are all in the power-on state, and the ends of steel pipe 14 and steel pipe 2 14 are respectively inserted into the cooling zone of the spiral steel pipe, generally, when the temperature of the spiral steel pipe is about 800°C to 1000°C, the cooling process can be considered to start. When the temperature detected by temperature sensor 17 is between 800°C and 1000°C, temperature sensor 17 will feedback a cooling signal to the control module 2, turn on the water pump 16, and the water heater 3 The temperature controller 11 feeds back the hot water temperature, and the mixing ratio of hot water and cold water can be roughly known. The control module 2 transmits a signal to the servo 1712 to adjust the position of the arc sealing valve plate 1705. The temperature sensor 1711 monitors the temperature of the mixed cooling water in the liquid mixer 17 in real time, and feeds back to the control module 2 for verification. If the temperature detected by the temperature sensor 1711 is too high or too low, the control module 2 controls the output shaft of the servo 1712 to drive the rotating shaft 1704, the connecting rod 1706 and the arc sealing valve plate 1705 to rotate to adjust the mixing ratio of cold water and hot water.

[0026] It should be added that the control of the cooling speed of the spiral steel pipe is very critical. If the cooling speed is too fast, the spiral steel pipe may have defects such as cracks and deformation. If the cooling speed is too slow, it will affect the production efficiency. First, the angle of rotation of the output shaft of the servo 1712 in the liquid mixer 17 can be adjusted to change the water inlet area of ​​the two water inlet pipes 1713 in the liquid mixer 17, so as to achieve the purpose of controlling the mixed water spray temperature of the porous spray head 1 5 and the porous spray head 2 20. The lower the water spray temperature, the faster the cooling speed. Second, the speed of the water pump 16 can be changed by connecting a variable frequency speed regulator in series between the control module 2 and the water pump 16. When the speed decreases, the flow rate will decrease accordingly, and when the speed increases, the flow rate will increase, thereby achieving the purpose of adjusting the flow rate of the porous spray head 1 5 and the porous spray head 2 20. The larger the flow rate, the faster the cooling speed.

[0027] In the present invention, the mixed water is extracted from the liquid mixer 17 by the water pump 16 and transported to the diverter 18. The diverter 18 diverts the water to the steel pipe 14 and the steel pipe 2 14, respectively cooling the inner and outer sides of the spiral steel pipe. The natural cooling efficiency is higher than that of the spiral steel pipe, and the inner and outer sides are cooled at the same time, so the cooling efficiency is higher. However, since the spiral steel pipe is in a horizontal state during the actual production process, the steam and accumulated water generated by the water mist sprayed on the inner circle may cause the steam and accumulated water to flow to the bending end of the spiral steel pipe if they are not handled in time. Therefore, the output shaft of the motor 12 can be used to drive the rotating rod 21 and the fan blade 22 to rotate rapidly, and the air at the bent working end of the spiral steel pipe can be extracted and blown to the end. First, it is used to disperse the spray of the porous spray head 20 more evenly, and second, it is used to blow the water and steam accumulated in the spiral pipe to the end of the spiral pipe for discharge, so as to avoid the backflow of the accumulated water in the spiral pipe and cool the spiral pipe in advance. When the water heater 3 keeps the internal hot water at a constant temperature through the temperature controller 11, and the liquid mixer 17 keeps the hot water and cold water distribution ratio in the water heater 3 and the cold water tank 10 unchanged, the porous spray head 1 5 and the porous spray head 2 20 can spray the mixed cooling water at a constant temperature; When the temperature of the hot water or cold water in the water heater 3 fluctuates, causing the mixing temperature of the liquid mixer 17 to fluctuate greatly, the temperature sensor 1711 is used to confirm that the water in the fan-shaped mixing chamber 1703 has reached the required water temperature. The temperature sensor 1711 is mainly used to detect the water temperature in the fan-shaped mixing chamber 1703 in the liquid mixer 17 in real time so that the control module 2 can adjust the water temperature. When water of different temperatures is needed, the rotation of the arc-shaped sealing valve plate 1705 can be controlled to adjust the inflow of hot water and cold water, so that water of the required temperature is mixed in the fan-shaped mixing chamber 1703. The temperature sensor 1711 detects the water temperature in the fan-shaped mixing water chamber in real time and transmits the signal to the control module 2. The control module 2 controls the rotation of the servo 1712 according to the signal of the temperature sensor 1711, thereby adjusting the position of the arc-shaped sealing valve plate 1705 to achieve precise control of the water temperature. The temperature of the cooling water can be accurately controlled between 20°C and 40°C to avoid the quality and performance of the spiral steel pipe being affected by too low or too high water temperature. It can prevent the internal stress caused by excessive cooling speed from causing cracks, deformation and other defects in the steel pipe, and ensure a good cooling effect, welding quality and forming effect.

[0028] Embodiment 2: like Figure 8-9 Based on Example 1, the main difference between Example 2 and Example 1 is that an agitator is embedded in the water outlet pipe 1708 in the liquid mixer 17, and the agitator is composed of a regular octagonal frame 1714, a fan blade 1715, a fixed rod 1716 and a plurality of stirring rods 1717. The regular octagonal frame 1714 is coaxially fixedly installed in the water outlet pipe 1708, one side of the fan blade 1715 is coaxially rotatably installed in the inner circle of the regular octagonal frame 1714 through a bearing, and the other side of the fan blade 1715 is coaxially fixedly connected to the fixed rod 1716. The head ends of the plurality of stirring rods 1717 are vertically fixedly installed on the periphery of the fixed rod 1716 and are arranged in the arc-shaped sealing valve plate 1705.

[0029] As is known to all, when the water pump 16 in Example 1 is in working condition, the water in the fan-shaped water mixing chamber 1703 in the liquid mixer 17 will be drawn to the water outlet pipe 1708, so that the water flowing in the water outlet pipe 1708 can push the fan blade 1715 to rotate in the water outlet pipe 1708, and the rotating fan blade 1715 can drive a plurality of stirring rods 1717 to rotate in the fan-shaped water mixing chamber 1703, so as to mix and stir the cold water and hot water entering the fan-shaped water mixing chamber 1703 evenly, thereby ensuring the accuracy of the temperature detection by the temperature sensor 2 1711.

[0030] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A forming and cooling device for a spiral steel pipe, characterized in that: include: A cart (1), a liquid mixer (17), a water pump (16) and two long straight pipes; The cart (1) is fixedly mounted with a water heater (3) and a cold water tank (10); the liquid mixer (17) is mounted on the upper end of the cart (1); two symmetrical water inlet pipes (1713) are arranged at the lower end of the liquid mixer (17); the two water inlet pipes (1713) are respectively connected to the water outlets at the lower ends of the water heater (3) and the cold water tank (10) through a hose (15); the water pump (16) is fixedly mounted above the cart (1); the water inlet of the water pump (16) is connected to the water outlet pipe (1708) in the liquid mixer (17) through a conduit; the two long straight pipes are connected to the water outlet of the water pump (16) through a diverter (18), and are fixedly connected to the cart (1); and the ends of the two long straight pipes are respectively arranged on the inner and outer sides of the spiral steel pipe; The two long straight tubes are respectively composed of steel tube one (4) and steel tube two (14), and the ends of the steel tube one (4) and steel tube two (14) are respectively fixedly connected to porous spray head one (5) and porous spray head two (20), and the outer periphery of the head ends of the steel tube one (4) and steel tube two (14) are fixedly installed with a plurality of tie rods, and are fixedly installed on the top end of the cart (1).

2. The forming and cooling device for spiral steel pipe according to claim 1, characterized in that: The liquid mixer (17) comprises a cylinder (1701), a cover plate (1707), a rotating shaft (1704), and an arc-shaped sealing valve plate (1705); the top ends of the two water inlet pipes (1713) are fixedly connected to the lower end of the cylinder (1701); the outer wall of the arc-shaped sealing valve plate (1705) and the inner wall of the cylinder (1701) fit each other; a plurality of connecting rods (1706) are fixedly connected between the rotating shaft (1704) and the arc-shaped sealing valve plate (1705); the rotating shaft (1704) is rotatably mounted on the central axis of the cylinder (1701); the cover plate (1707) is sealed and mounted on the opening of the cylinder (1701); and the water outlet pipe (1708) is fixedly mounted on the cover plate (1707).

3. The forming and cooling device for spiral steel pipe according to claim 2, characterized in that: The liquid mixer (17) further comprises a steering gear (1712) and a second temperature sensor (1711); the steering gear (1712) and the second temperature sensor (1711) are both fixedly connected to the cover plate (1707); the output shaft of the steering gear (1712) and the rotating shaft (1704) are coaxially fixedly connected; a control module (2) is fixedly mounted on the top of the cart (1); a temperature controller (11) is fixedly mounted on the water heater (3); and the temperature controller (11), the second temperature sensor (1711) and the steering gear (1712) are all signal-connected to the control module (2).

4. The forming and cooling device for spiral steel pipe according to claim 1, characterized in that: A cylindrical support rod (13) is fixedly mounted below the second steel pipe (14), the cylindrical support rod (13) is fixedly connected to the top of the cart (1), a rotating rod (21) is coaxially mounted inside the cylindrical support rod (13), a second fan blade (22) is fixedly mounted at the end of the rotating rod (21), a motor (12) is fixedly mounted at the top of the cart (1), and an output shaft of the motor (12) is fixedly connected to the rotating rod (21) via a coupling.

5. The forming and cooling device for spiral steel pipe according to claim 4, characterized in that: A support roller frame (23) is coaxially arranged on one side of the second fan blade (22); the support roller frame (23) is rotatably connected to the rotating rod (21); and a plurality of round rollers (24) are rotatably mounted on the periphery of the support roller frame (23).

6. The forming and cooling device for spiral steel pipe according to claim 1, characterized in that: A round rod (6) is fixedly mounted above the steel pipe (4), and a temperature sensor (7) is vertically fixedly mounted at the end of the round rod (6). The temperature sensor (7) is connected to the control module (2) for signal connection.

7. The forming and cooling device for spiral steel pipe according to claim 2, characterized in that: A sealing block (1702) is fixedly filled and installed at the upper end of the inner cavity of the cylinder (1701), and a fan-shaped water mixing cavity (1703) is reserved below the inner cavity of the cylinder (1701).

8. The forming and cooling device for spiral steel pipe according to claim 1, characterized in that: An hourglass-shaped roller (9) is rotatably mounted below the first steel pipe (4) via a bracket (8).

9. The forming and cooling device for spiral steel pipe according to claim 1, characterized in that: A water level gauge (19) is fixedly mounted on one side of the water heater (3) and the cold water tank (10).

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