An environmentally friendly dephosphorization machine for treating wire rod oxide scale

Abstract

The present invention relates to the field of steel processing, and in particular to an environmentally friendly dephosphorization machine for treating wire rod oxide scale. It comprises a frame, a heating and temperature control module, and a cooling module; the heating and temperature control module comprises a high-frequency heater and a temperature sensor, the high-frequency heater is fixed on the frame, and the temperature sensor is arranged behind the high-frequency heater; the cooling module is arranged behind the high-frequency heater; the cooling module comprises an overflow cooling water tank, and the overflow cooling water tank is provided with an inner tank, an outer tank, and a wire rod inlet and outlet that passes through the overflow cooling water tank. The environmentally friendly dephosphorization machine for treating wire rod oxide scale provided by the present invention utilizes the different expansion coefficients of the metal substrate and the oxide scale to make the oxide scale burst and fall off during thermal expansion and contraction, and heats the surface of the wire rod with high frequency, and then allows the wire rod to pass through cooling water, so that the oxide scale can be separated from the wire rod. The working process is simple and efficient.

Description

Technical Field

[0001] The invention relates to the field of steel processing, and in particular to an environmentally friendly dephosphorization machine for treating wire rod oxide scale. Background Art

[0002] During hot rolling, steel wire rod forms oxide scale, which must be removed before drawing. The earliest method for removing this scale involved a chemical reaction between the acid and the scale. However, this method was costly, environmentally unfriendly, and prone to hydrogen embrittlement, seriously impacting product quality. As environmental concerns have gained increasing attention, this method has been phased out.

[0003] Subsequently, mechanical descaling methods were developed, including mechanical peeling combined with steel brushing, mechanical peeling combined with abrasive belts, and mechanical peeling combined with polishing. The basic principle of these methods is to use a turning wheel to loosen the scale, and then use a steel brush, abrasive belt, or steel shot to impact or knock the scale off the surface of the wire rod. However, these methods all have disadvantages such as high dust production, uneven scale removal, damage to the wire rod, poor production environment, high power consumption, and high consumables.

[0004] For example, a patent document with the announcement number CN 209953374U and the announcement date of January 17, 2020, discloses an ultra-high-pressure water dephosphorization device, comprising a base plate, the top of which is fixedly connected to a working box, and the back of the working box is fixedly connected to an equipment water tank and a control cabinet in sequence from left to right. By placing the forgings that need to be dephosphorized on a conveying device, and through the mutual cooperation of an infrared temperature controller and a touch-screen control panel, the forgings can be transported from the conveying device to the interior of the working box, and water is stored in the equipment water tank through a water inlet pipe. The high-pressure water in the equipment water tank is transported to the working box through the mutual cooperation of a three-steel plunger high-pressure pump, a first water outlet pipe, and a water supply pipe, and is sprayed out through a high-pressure rotary nozzle to perform a full range of oxide scale cleaning on the forgings.

[0005] However, the above solution directly uses high-pressure water to flush the steel wire rod to remove the oxide scale. If the water pressure is too low, it is not easy to flush it cleanly. If the water pressure is too high, it is easy to damage the steel wire rod and it is difficult to control. Summary of the Invention

[0006] In order to solve the above-mentioned shortcomings of the dephosphorization equipment in the prior art when removing the oxide scale on the steel wire rod, such as large dust, uneven oxide scale removal, wire rod loss, poor production environment, high power consumption, and large number of consumables, the present invention provides an environmentally friendly dephosphorization machine for treating wire rod oxide scale, comprising a frame, a heating and temperature control module, and a cooling module;

[0007] The heating and temperature control module includes a high-frequency heater and a temperature sensor, wherein the high-frequency heater is fixed on the frame and the temperature sensor is arranged behind the high-frequency heater;

[0008] The cooling module is arranged behind the high-frequency heating machine; the cooling module includes an overflow cooling water trough, and the overflow cooling water trough is provided with an inner trough, an outer trough and a wire rod inlet and outlet passing through the overflow cooling water trough.

[0009] In one embodiment, the invention further comprises a guide straightening module, wherein the guide straightening module is fixed in front of the high-frequency heating machine;

[0010] The guide straightening module includes a cross-shaped guide and a straightening wheel group, wherein the cross-shaped guide is arranged in front of the straightening wheel group; the straightening wheel group is fixed on the frame.

[0011] In one embodiment, it further includes a high-pressure air wipe, which is arranged at the wire rod outlet of the overflow cooling water tank.

[0012] In one embodiment, a recovery module is further included, wherein the recovery module includes a magnetic solid-liquid separator and a water collection tank;

[0013] The water collecting box is arranged below the frame, and the magnetic solid-liquid separator is installed in a chamber inside the water collecting box. The chamber is connected to the water collecting box and the outer tank of the overflow cooling water tank.

[0014] In one embodiment, the cooling module further includes a heat exchanger, a water tank and a water pump. The water tank is connected to the water collecting tank via the heat exchanger. The water pump is provided in the water tank and pumps the cooling water in the water tank to the overflow cooling water tank.

[0015] In one embodiment, the heat exchanger is a plate heat exchanger.

[0016] In one embodiment, a liquid level sensor is further provided in the water tank.

[0017] In one embodiment, a cooling water outlet is provided at the bottom of the water tank, and a cooling water inlet is provided at the top of the water tank.

[0018] In one embodiment, the water tank is further provided with an alarm for warning of abnormal liquid level.

[0019] In one embodiment, a flip cover is provided on the top of the overflow cooling water tank.

[0020] Compared with the prior art, the environmentally friendly dephosphorization machine for treating wire rod oxide scale provided by the present invention has the following advantages:

[0021] 1. No dust spillage, good environment.

[0022] 2. The oxide scale is removed cleanly and evenly.

[0023] 3. No damage to the steel surface.

[0024] 4. No emissions, no waste, environmentally friendly.

[0025] 5. No consumables, low cost.

[0026] 6. It has the function of straightening, which is convenient for the next process.

[0027] 7. Small space occupation and high integration.

[0028] Other features and beneficial effects of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The objectives and other beneficial effects of the present invention can be achieved and obtained by the structures particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work. The positional relationships described in the drawings in the following description are based on the directions of the components drawn in the diagrams, unless otherwise specified.

[0030] Figure 1 A schematic structural diagram of an embodiment of an environmentally friendly dephosphorization machine for treating wire rod oxide scale provided by the present invention;

[0031] Figure 2 This is a schematic structural diagram of another embodiment provided by the present invention.

[0032] Reference numerals:

[0033] 1. Tile guide 2. Straightening wheel set 3. High frequency heating machine

[0034] 4 Temperature sensor 5 Overflow cooling water tank 6 High pressure air wipe

[0035] 7 Magnetic solid-liquid separator 8 Water collecting tank 9 Heat exchanger

[0036] 10 water tank 11 water pump 12 rack

[0037] 13 Liquid level sensor 14 Cooling water inlet 15 Cooling water outlet DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that all terms used in the present invention (including technical terms and scientific terms) have the same meanings as those generally understood by ordinary technicians in the field to which the present invention belongs, and should not be understood as limiting the present invention; it should be further understood that the terms used in the present invention should be understood to have meanings consistent with the meanings of these terms in the context of this specification and in the relevant fields, and should not be understood in an idealized or overly formal sense, unless explicitly defined as such in the present invention.

[0040] In order to solve the problem that the dephosphorization equipment in the prior art cannot take into account both environmental protection and protection of the wire rod from damage when removing the oxide scale on the steel wire rod, the present invention provides an environmentally friendly dephosphorization machine for treating the oxide scale of the wire rod, comprising a frame 12, a heating and temperature control module, and a cooling module;

[0041] The heating and temperature control module includes a high-frequency heater 3 and a temperature sensor 4. The high-frequency heater 3 is fixed on the frame 12, and the temperature sensor 4 is arranged behind the high-frequency heater 3.

[0042] The cooling module is arranged behind the high-frequency heating machine 3; the cooling module includes an overflow cooling water tank 5, and the overflow cooling water tank 5 is provided with an inner tank, an outer tank and a wire rod inlet and outlet passing through the overflow cooling water tank 5.

[0043] When implementing it specifically, Figure 1 As shown, a high-frequency heater 3 is fixed on the frame 12, and a temperature sensor 4 is arranged behind the high-frequency heater 3 and electrically connected to the high-frequency heater 3. The temperature sensor 4 is used to detect the temperature of the wire rod after being heated by the high-frequency heater 3, and then feeds the detected temperature back to the high-frequency heater 3 to control the wire rod temperature within the set range.

[0044] The overflow cooling water tank 5 is arranged behind the high-frequency heating machine 3. The overflow cooling water tank 5 is provided with an inner tank and an outer tank. The bottom of the inner tank is provided with a water inlet. The cooling water enters the inner tank through the water inlet and overflows into the outer tank. The bottom of the outer tank is provided with a drain outlet to discharge the overflow cooling water. At the same time, the overflow cooling water tank 5 is provided with a wire rod inlet and outlet that pass through the inner and outer tanks. The wire rod passes through the outer tank, the inner tank, and the outer tank to the outside in sequence, where it is fully exposed to the cooling water and cooled rapidly. In this way, the different expansion coefficients of the metal substrate and the oxide scale are utilized to cause the oxide scale to burst and fall off during thermal expansion and contraction. Preferably, the water inlet and drain rates are controlled so that the liquid level in the outer tank is higher than the wire rod, so that the high-temperature wire rod first contacts the higher-temperature cooling water, ensuring that the cooling rate is not too fast, thereby affecting the performance of the wire rod.

[0045] Specific working principle and process:

[0046] Powered by the wire drawing machine, the wire rod is heated by the high-frequency heating machine 3 and then cooled in the overflow cooling water tank 5. The oxide scale has low expansion and high brittleness, while the metal substrate has a large expansion coefficient. The oxide scale bursts and falls off during thermal expansion and contraction, and the fallen oxide scale enters the overflow cooling water tank 5. At the same time, during operation, the temperature sensor 4 monitors the temperature of the heated wire rod in real time, and feeds back the signal to the high-frequency heating machine 3 to adjust the temperature in real time.

[0047] The environmentally friendly dephosphorization machine for treating wire rod scale utilizes the different expansion coefficients of the metal substrate and the scale to cause the scale to burst and fall off during thermal expansion and contraction. The scale is removed by high-frequency heating of the wire rod surface and then passing the wire rod through cooling water, resulting in a simple and efficient process. Furthermore, the entire production process is dust-free, meeting environmental requirements. Furthermore, no additional consumables are required, reducing operating costs and improving production efficiency.

[0048] Preferably, it further comprises a guide straightening module, which is fixed in front of the high-frequency heating machine 3 .

[0049] The guide straightening module includes a cross-shaped guide 1 and a straightening wheel group 2. The cross-shaped guide 1 is arranged in front of the straightening wheel group 2; the straightening wheel group 2 is fixed on the frame 12.

[0050] When implementing it specifically, Figure 1 As shown, the straightening wheel assembly 2 is fixed to the frame in front of the high-frequency heating machine 3, and the cross-shaped guide 1 is located in front of the wire rod inlet of the straightening wheel assembly 2. The cross-shaped guide 1 controls the position of the wire rod entering the straightening wheel assembly 2 and ensures that the wire rod does not move during straightening in the straightening wheel assembly 2. After the wire rod is straightened by the cross-shaped guide 1 and the straightening wheel assembly 2, it is convenient for subsequent processing.

[0051] Furthermore, it also includes a high-pressure air wipe 6, which is arranged at the wire rod outlet of the overflow cooling water tank 5.

[0052] When implementing it specifically, Figure 1 As shown, the overflow cooling water trough 5 wire rod outlet is provided with a high-pressure air wipe 6. When in use, the wire rod is moved out of the overflow cooling water trough 5 through the through hole of the high-pressure air wipe 6; an air jet is provided on the side wall of the through hole of the high-pressure air wipe 6, and high-pressure gas is ejected from the air jet to clean the surface of the wire rod passing through, so that the oxide scale attached to the wire rod and the cooling water remain in the outer groove of the overflow cooling water trough 5.

[0053] In one embodiment, a recovery module is further included, and the recovery module includes a magnetic solid-liquid separator 7 and a water collection tank 8;

[0054] The water collecting box 8 is arranged below the frame 12 , and the magnetic solid-liquid separator 7 is installed in a chamber inside the water collecting box 8 , and the chamber is connected to the water collecting box 8 and the outer tank of the overflow cooling water tank 5 .

[0055] When implementing it specifically, Figure 1 As shown, the magnetic solid-liquid separator 7 is installed in the chamber of the water collection tank 8 below the frame 12. The chamber is connected to the water collection tank 8 and the outer tank of the overflow cooling water tank 5. During operation, the cooling water in the outer tank of the overflow cooling water tank 5 passes through the magnetic solid-liquid separator 7 to separate the oxide scale before entering the water collection tank 8, preventing the continuous accumulation of oxide scale and affecting equipment operation.

[0056] Furthermore, the cooling module also includes a heat exchanger 9, a water tank 10 and a water pump 11. The water tank 10 is connected to the water collecting tank 8 through the heat exchanger 9. The water pump 11 is provided in the water tank 10. The water pump 11 pumps the cooling water in the water tank 10 to the overflow cooling water tank 5.

[0057] When implementing it specifically, Figure 1 As shown, water tank 10 is connected to water collection tank 8 via heat exchanger 9. The cooling water in water collection tank 8 is fully cooled in heat exchanger 9 before entering water tank 10. Water tank 10 is equipped with a water pump 11, which pumps the cooling water from water tank 10 into the inner tank of overflow cooling water tank 5. This allows the cooling water in the cooling module to circulate, saving resources and reducing production costs.

[0058] Preferably, the heat exchanger 9 is a plate heat exchanger.

[0059] In specific implementation, the heat exchanger 9 is a plate heat exchanger, which has high heat exchange efficiency, small heat loss, compact and lightweight structure, and long service life.

[0060] Preferably, a liquid level sensor 13 is further provided in the water tank 10 .

[0061] When implementing it specifically, Figure 2 As shown, a liquid level sensor 13 for monitoring the liquid level is provided in the water tank 10 and feeds back the liquid level in the water tank 10 to the outside.

[0062] Furthermore, a cooling water outlet 15 is provided at the bottom of the water tank 10 , and a cooling water inlet 14 is provided at the top of the water tank 10 .

[0063] When implementing it specifically, Figure 2 As shown, a cooling water outlet 15 is provided at the bottom of the water tank 10, and a cooling water inlet 14 is provided at the top of the water tank 10. When the cooling water level in the water tank 10 is too low, cooling water is replenished through the cooling water inlet 14; when the cooling water level in the water tank 10 is too high, cooling water is discharged through the cooling water outlet 15 to prevent damage to the cooling module due to excessive pressure.

[0064] Furthermore, the water tank 10 is also provided with an alarm for reminding of abnormal liquid level.

[0065] In specific implementation, the water tank 10 is also provided with an alarm for reminding abnormal liquid level, and the alarm is electrically connected to the liquid level sensor 13. When the liquid level sensor 13 detects that the liquid level is higher or lower than the set value, it sends a signal to the alarm, which sounds an alarm to remind personnel of the abnormal situation.

[0066] In one embodiment, a flip cover is provided on the top of the overflow cooling water tank 5 .

[0067] During specific implementation, a flip cover is provided on the top of the overflow cooling water tank 5 for inspecting and cleaning the overflow cooling water tank 5 to prevent blockage.

[0068] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention may be improved in only one or several aspects, without having to simultaneously solve all the technical problems listed in the prior art or background art. Those skilled in the art should understand that any content not mentioned in a claim should not be construed as limiting the claim.

[0069] Although this document frequently uses terms such as "tic-tac-toe guide," "straightening wheel assembly," "high-frequency heater," "temperature sensor," "overflow cooling water tank," "high-pressure air rubbing," "magnetic solid-liquid separator," "water collecting tank," "heat exchanger," "water tank," "water pump," "machine frame," "liquid level sensor," "cooling water inlet," and "cooling water outlet," other terms are not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations would be contrary to the spirit of the present invention.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An environmentally friendly dephosphorization machine for treating wire rod oxide scale, characterized by: It includes a frame (12), a heating and temperature control module, and a cooling module; The heating and temperature control module comprises a high-frequency heating machine (3) and a temperature sensor (4), wherein the high-frequency heating machine (3) is fixed on the frame (12), and the temperature sensor (4) is arranged behind the high-frequency heating machine (3); The cooling module is arranged behind the high-frequency heating machine (3); the cooling module comprises an overflow cooling water tank (5), the overflow cooling water tank (5) is provided with an inner tank, an outer tank and a wire rod inlet and outlet that penetrates the overflow cooling water tank (5); a water inlet is provided at the bottom of the inner tank, and cooling water flows into the inner water tank from the water inlet and overflows to the outer tank, and a drain outlet is provided at the bottom of the outer tank; the wire rod passes through the outer tank, the inner tank, and the outer tank to the outside in sequence, and is fully in contact with the cooling water to quickly cool down; the water inlet and drain rate are controlled so that the liquid level of the outer tank is higher than the wire rod, so that the high-temperature wire rod first contacts the cooling water with a higher temperature, and ensures that the cooling rate is not too fast, thereby affecting the performance of the wire rod; It also includes a high-pressure air wipe (6), which is arranged at the wire rod outlet of the overflow cooling water tank (5); a jet nozzle is provided on the side wall of the through hole of the high-pressure air wipe (6), and high-pressure gas is ejected from the jet nozzle to clean the surface of the wire rod passing through, so that the oxide scale attached to the wire rod and the cooling water remain in the outer tank of the overflow cooling water tank (5); It also includes a guide straightening module, the guide straightening module is fixed in front of the high-frequency heating machine (3); the guide straightening module includes a cross-shaped guide (1) and a straightening wheel group (2), the cross-shaped guide (1) is arranged in front of the straightening wheel group (2); the straightening wheel group (2) is fixed on the frame (12); The machine further comprises a recovery module, the recovery module comprising a magnetic solid-liquid separator (7) and a water collecting tank (8); the water collecting tank (8) is arranged below the frame (12), the magnetic solid-liquid separator (7) is installed in a chamber inside the water collecting tank (8), and the chamber is connected to the water collecting tank (8) and the outer tank of the overflow cooling water tank (5); The cooling module further comprises a heat exchanger (9), a water tank (10) and a water pump (11); the water tank (10) is connected to the water collecting tank (8) via the heat exchanger (9); the water pump (11) is provided in the water tank (10); the water pump (11) pumps the cooling water in the water tank (10) to the overflow cooling water tank (5).

2. The environmentally friendly dephosphorization machine for treating wire rod oxide scale according to claim 1, characterized in that: The heat exchanger (9) is a plate heat exchanger.

3. The environmentally friendly dephosphorization machine for treating wire rod oxide scale according to claim 1, characterized in that: A liquid level sensor (13) is also provided in the water tank (10).

4. The environmentally friendly dephosphorization machine for treating wire rod oxide scale according to claim 2, characterized in that: A cooling water outlet (15) is provided at the bottom of the water tank (10), and a cooling water inlet (14) is provided at the top of the water tank (10).

5. The environmentally friendly dephosphorization machine for treating wire rod oxide scale according to claim 4, characterized in that: The water tank (10) is also provided with an alarm for notifying of abnormal liquid levels.

6. The environmentally friendly dephosphorization machine for treating wire rod oxide scale according to claim 1, characterized in that: The top of the overflow cooling water tank (5) is provided with a flip cover.

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