Pickled steel wire purging device

Abstract

The utility model discloses a pickling steel wire purging device. The pickling steel wire purging device comprises a shell, an air pipe joint, a throttle valve and a mold core, a cavity is formed in the shell, a threaded hole and a core hole are formed in the shell, the threaded hole is communicated with the cavity, and the core hole penetrates through the shell and penetrates through the cavity; the air pipe connector is connected to the threaded hole, and the throttling valve is connected to the air pipe connector. The die core is axially provided with a wire passing hole for a steel wire to pass through, the die core is connected into the core hole in a sealed mode, and a plurality of small air inlet holes are formed in the die core in the cavity and communicated with the wire passing hole. Compared with the prior art, residual hydrochloric acid on the surface of the steel wire passing through the hydrochloric acid tank can be blown away, the hydrochloric acid is saved, the use amount of cleaning water is reduced, and the production cost is reduced to a great extent.

Description

Technical Field

[0001] The utility model relates to the technical field of steel wire surface treatment, in particular to a pickling steel wire blowing device. Background Art

[0002] There are two manufacturing processes for steel wire. One is rolling with a roller with arc grooves, and the other is drawing and thinning through a wire drawing die. The raw material for steel wire production is called wire rod. Wire rods are generally produced by hot rolling process in steel mills with diameters ranging from 4mm to 16mm, one roll at a time. All wire rods have a layer of iron oxide on the surface, which is brittle and hard. Before rolling and drawing with a wire drawing die, the surface must be cleaned. Otherwise, the die will be worn and embedded in the wire body, resulting in wire breakage.

[0003] The process of removing oxide scale is generally divided into mechanical removal and pickling removal. Or first use mechanical removal of most of the oxide scale, and then use 18% concentration, 60 degrees hydrochloric acid for cleaning, and remove the residual oxide layer on the surface by chemical corrosion. After the steel wire passes through the hydrochloric acid tank, there is a large amount of hydrochloric acid on the surface. If it is not removed cleanly, it will be carried to the water washing tank of the subsequent process. It causes a large amount of waste of hydrochloric acid, the amount of cleaning water, and the cost of water treatment.

[0004] Therefore, it is very important to design an effective device to remove hydrochloric acid from the surface of steel wire. Utility Model Content

[0005] The purpose of the utility model is to provide a pickling steel wire blowing device, which can blow away the hydrochloric acid remaining on the surface of the steel wire after passing through the hydrochloric acid tank, while saving hydrochloric acid, reducing the amount of cleaning water, and greatly reducing the production cost, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pickling steel wire purging device comprises a shell, an air pipe joint, a throttle valve and a mold core; a cavity is provided in the shell, and a threaded hole and a core hole are provided on the shell, the threaded hole is connected to the cavity, and the core hole passes through the shell and the cavity; the air pipe joint is connected to the threaded hole, and the throttle valve is connected to the air pipe joint; a wire hole for passing the steel wire is axially provided on the mold core, the mold core is sealed and connected to the core hole, and a plurality of air inlet holes are opened on the mold core in the cavity, and the air inlet holes are connected to the wire hole.

[0008] A further improvement of the utility model is that the shell is machined after welding the PP plate, the shell as a whole presents a T-shaped cavity structure, two ear seats are symmetrically arranged on the shell, and waist holes for installation are arranged on the ear seats.

[0009] A further improvement of the utility model is that the air pipe joint is a three-way joint, one interface of the air pipe joint is connected to the air source, another interface is connected to the cavity, and the throttle valve is connected to the other interface through a locking nut.

[0010] A further improvement of the utility model is that the mold core is in the shape of a shaft sleeve with a step on the outer wall, the large diameter sections at both ends of the mold core are interference fit in the core hole, the inner walls at both ends of the core hole are provided with fixed grooves, the O-rings are embedded in the fixed grooves, and the outer wall of the mold core squeezes the O-ring to make it elastically deformed.

[0011] A further improvement of the utility model is that the air inlet holes are arranged obliquely at the center position of the outer cylindrical surface of the small diameter section of the mold core in the cavity. There are two groups of air inlet holes, three holes in each group, the two groups of air inlet holes are staggered 60° around the circumference, and the six air inlet holes are evenly distributed around the axis.

[0012] A further improvement of the utility model is that the inclination angle of the air inlet hole is 30°.

[0013] A further improvement of the utility model is that the material of the mold core is powder metallurgy hard alloy material.

[0014] A further improvement of the utility model is that the wire-passing hole is a tapered hole, and the diameter of the small end of the wire-passing hole is 1.5 times the diameter of the passing steel wire.

[0015] Beneficial effects of the utility model:

[0016] The pickling steel wire blowing device of the utility model can blow away the hydrochloric acid remaining on the surface of the steel wire after passing through the hydrochloric acid tank, thereby saving hydrochloric acid and reducing the amount of cleaning water, thereby greatly reducing the production cost.

[0017] The utility model discloses a pickling steel wire purging device, wherein compressed air is purged at six positions in a circumferential direction, and the hydrochloric acid purging is more thorough.

[0018] The utility model of the pickling steel wire blowing device blows the compressed air to the steel wire at an angle of 30 degrees, thereby preventing the compressed air from blowing in the opposite direction of the pickling tank to the greatest extent and protecting the workshop environment.

[0019] In the pickling steel wire blowing device of the utility model, the compressed air first enters the pressure-stabilizing cavity before entering the small holes, so that the compressed air blown out of the six holes has a balanced pressure.

[0020] The utility model discloses a pickling steel wire blowing device, wherein the wire passing hole is an angled tapered hole, so that even if the steel wire shakes, it can ensure that there is a gap between the air inlet hole and the steel wire, and compressed air can be blown to the surface of the steel wire.

[0021] The pickling steel wire blowing device of the utility model has a shell made of PP material, which is corrosion-resistant, impact-resistant and easy to process.

[0022] The pickling steel wire blowing device of the utility model adopts hard alloy to make the mold core, which is wear-resistant, corrosion-resistant and has a prolonged service life.

[0023] The pickling steel wire blowing device of the utility model uses a throttle valve to adjust the flow rate of compressed air, which can better blow clean and achieve the effect of energy saving.

[0024] The pickling steel wire blowing device of the utility model uses an O-ring seal to reduce the waste of compressed air and achieve the effect of energy saving and emission reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0026] Figure 2 It is a cross-sectional view of the utility model.

[0027] Figure 3 It is a schematic diagram of the shell structure of the utility model.

[0028] Figure 4 It is a cross-sectional view of the shell of the utility model.

[0029] Figure 5 This is a schematic diagram of the mold core structure of the utility model.

[0030] Figure 6 It is a cross-sectional view of the mold core of the present utility model.

[0031] Figure 7 It is a schematic diagram of the circumferential distribution of the air intake holes of the utility model.

[0032] Figure 8 It is a structural schematic diagram of the utility model in working state.

[0033] In the figure: 1-shell, 101-cavity, 102-threaded hole, 103-core hole, 104-ear seat, 105-waist hole, 106-fixed slot, 2-trachea joint, 3-throttle valve, 4-core, 401-thread hole, 402-air inlet hole, 5-locking nut, 6-O-ring, 7-nozzle, 8-circulation pump, 9-pickling tank, 10-steel wire. DETAILED DESCRIPTION

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] Example 1: Figures 1 to 7As shown, a pickling steel wire purging device includes a shell 1, an air pipe joint 2, a throttle valve 3 and a core mold 4; a cavity 101 is provided in the shell 1, and a threaded hole 102 and a core hole 103 are provided on the shell 1, the threaded hole 102 is connected to the cavity 101, and the core hole 103 passes through the shell 1 and the cavity 101; the air pipe joint 2 is connected to the threaded hole 102, and the throttle valve 3 is connected to the air pipe joint 2 through a locking nut 5; the core mold 4 is axially provided with a wire hole 401 for the steel wire 10 to pass through, the core mold 4 is sealed and connected to the core hole 103, and a plurality of air inlet holes 402 are opened on the core mold 4 in the cavity 101, and the air inlet holes 402 are connected to the wire hole 401.

[0036] The shell 1 is made of a T-shaped hole cavity 101 structure made of PP sheet after welding, which is acid-resistant, alkali-resistant and corrosion-resistant. There is a 44*32mm cavity 101 in the middle to stabilize the compressed air. The 19mm core hole 103 is used to install the alloy mold core 4. At both ends of the core hole 103, there is a fixed card slot 106 for installing an O-ring for sealing the shell 1 and the mold core 4. Two waist holes 105 with a width of 12mm and a length of 20mm are processed at both ends of the shell 1 to adjust the position of the entire purge device so that the steel wire 10 can be exactly in the middle of the alloy mold core 4 to achieve the best purge effect.

[0037] The air pipe connector 2 is a three-way connector, one interface of the air pipe connector 2 is connected to the air source, another interface is connected to the cavity 101 , and the throttle valve 3 is connected to the other interface through a locking nut 5 .

[0038] The mold core 4 is a stepped sleeve made of powder metallurgy cemented carbide. There is a step of 22mm in diameter and 4mm in length at one end, and the outer circle size of the other end is 19mm and 50.5mm in length. The 19mm outer circle matches the 19mm hole of the shell 1 and is sealed by an O-ring 6. In the middle of this section of the cylinder with a diameter of 19mm, there is a 25mm length and a diameter of 17mm. There are two purposes. One is that the cemented carbide material is difficult to process. This section of the outer circle with a diameter of 17mm does not require precision processing, which reduces the processing cost. The second reason is to make the buffer space of the compressed air larger so that all the air intake holes 402 can get the same pressure. In the middle position, along the outer circle with a diameter of 17mm, there are two groups of air intake holes 402 with an inclination angle of 30°, three holes in each group, evenly distributed around the circumference, the second group of holes and the first group of holes are staggered by 4mm in radial direction and 60° in circumference. From the side, the six holes are evenly distributed with the axis as the center, and the second group of air intake holes 402 is 18.5mm away from the right end. The diameter d of the air inlet hole 402 is 1 / 4 of the diameter D of the small end of the thread hole 401. After testing, the same compressed air pressure can achieve the most effective purging effect with this ratio of size. The middle of the alloy mold core 4 is a tapered hole with an angle of 4°. The diameter D of the small end of the thread hole 401 is 1.5*the diameter of the steel wire 10. This size can ensure the best purging effect.

[0039] The specific working principle of the utility model is as follows:

[0040] like Figure 8 As shown, the working principle of the purging device is briefly described. Steel wire 10 is the product produced by the device. Pickling tank 9, the actual pickling tank 9 has a heating device, a negative pressure exhaust device, and a sealed cover tank body length of 6m. Circulation pump 8, used to pour hydrochloric acid onto the steel wire 10 through a pump, and there is actually an immersion type, and ensure that the steel wire 10 stays in the acid solution for a certain period of 3 to 5 seconds. The ear seat 104 on the shell 1 is connected to the outer wall of the pickling tank 9 by bolts, and the large end of the core 4 extends to the top of the pickling tank 9.

[0041] Under the traction of the wire drawing machine, the steel wire 10 moves from the right end to the left end through the pickling tank 9. The circulating pump 8 pours hydrochloric acid with a concentration of 180g / L and a temperature of 60°C onto the surface of the steel wire 10 through the nozzle 7 to corrode the oxide scale remaining on the surface of the steel wire 10. The compressed air is adjusted to 0.2MP and enters the throttle valve 3 through the air pipe joint 2. The flow rate of the compressed air entering can be changed by adjusting the screw of the throttle valve 3. The compressed air enters the cavity 101 through the outlet of the throttle valve 3, and plays a role in stabilizing pressure and flow in the cavity 101. Then, through the six air inlet holes 402 around the mold core 4, it is blown to the surface of the steel wire 10 in a 30° direction to clean the hydrochloric acid liquid remaining on the surface of the steel wire 10, and the hydrochloric acid liquid will flow from the large end to the pickling tank 9.

[0042] In addition Figure 8 In the figure, the hollow arrows indicate the flow direction of the compressed air, and the solid arrows indicate the movement direction of the steel wire 10.

[0043] The above implementation is only to illustrate the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and it cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A pickling steel wire purging device, characterized in that: The invention comprises a shell (1), an air pipe joint (2), a throttle valve (3) and a mold core (4); the shell (1) is provided with a cavity (101), and the shell (1) is provided with a threaded hole (102) and a core hole (103); the threaded hole (102) is connected to the cavity (101), and the core hole (103) passes through the shell (1) and the cavity (101); the air pipe joint (2) is connected to the threaded hole (102), and the throttle valve (3) is connected to the air pipe joint (2); the mold core (4) is axially provided with a wire hole (401) for passing a steel wire (10); the mold core (4) is sealingly connected to the core hole (103); a plurality of air inlet holes (402) are opened on the mold core (4) in the cavity (101), and the air inlet holes (402) are connected to the wire holes (401).

2. A pickling steel wire purging device as claimed in claim 1, characterized in that: The shell (1) is formed by welding PP plates and then machining them. The shell (1) as a whole presents a T-shaped cavity (101) structure. Two ear seats (104) are symmetrically arranged on the shell (1), and waist holes (105) for installation are arranged on the ear seats (104).

3. A pickling steel wire purging device as claimed in claim 1 or 2, characterized in that: The air pipe joint (2) is a three-way joint, one interface of the air pipe joint (2) is connected to the air source, another interface is connected to the cavity (101), and the throttle valve (3) is connected to the other interface via a locking nut (5).

4. A pickling steel wire purging device as claimed in claim 2, characterized in that: The mold core (4) is in the shape of a shaft sleeve with a stepped outer wall. The large diameter sections at both ends of the mold core (4) are interference fit in the core hole (103). The inner walls at both ends of the core hole (103) are provided with fixed grooves (106). The O-ring (6) is embedded in the fixed groove (106), and the outer wall of the mold core (4) squeezes the O-ring (6) to elastically deform it.

5. A pickling steel wire purging device as claimed in claim 4, characterized in that: The air inlet holes (402) are arranged obliquely at the center of the outer circular surface of the small diameter section of the mold core (4) in the cavity (101). There are two groups of air inlet holes (402), each group has three holes, the two groups of air inlet holes (402) are staggered by 60 degrees, and the six air inlet holes (402) are evenly distributed around the axis.

6. A pickling steel wire purging device as claimed in claim 5, characterized in that: The inclination angle of the air inlet hole (402) is 30°.

7. A pickling steel wire purging device as claimed in claim 5, characterized in that: The mold core (4) is made of powder metallurgy hard alloy material.

8. A pickling steel wire purging device as claimed in claim 1, characterized in that: The wire hole (401) is a tapered hole, and the diameter of the small end of the wire hole (401) is 1.5 times the diameter of the steel wire (10) passing through it.

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