Two-roller cross piercing device for seamless steel pipe

Abstract

The utility model discloses a two-roller cross piercing device for seamless steel tubes, which relates to the technical field of seamless steel tube production and comprises a supporting table, four bearing supports are symmetrically distributed and fixedly arranged on the front side and the rear side of the upper surface of the supporting table, and rollers are rotatably arranged above the corresponding middles of the left side and the right side of each bearing support. And double-port pipes are fixedly connected to the inner surfaces of the opposite sides, corresponding front and back, of the bearing support and communicate with the interiors of the rollers, and a water inlet pipe is fixedly connected to the upper side of the surface of the double-port pipe on the right side. Compared with an existing common two-roller cross piercing device for the seamless steel pipe, the two-roller cross piercing device for the seamless steel pipe has the advantages that the rollers can be quickly cooled, so that the service life of the rollers is greatly prolonged, used cooling water can enter the discharge pipe through the left double-port pipe and then flow into the small condensing tower for secondary cooling, and the service life of the rollers is prolonged. And water flow is recycled, resource waste is avoided, and the device is more environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of seamless steel pipe production, in particular to a two-roller oblique rolling and piercing device for seamless steel pipes. Background Art

[0002] When using a two-roller cross-rolling piercing machine to produce seamless steel pipes, the rolls must be cooled with water to ensure the service life of the rolls and the surface quality of the rough pipes. The cooling of the rolls is generally done by adding water to the outside of the rolls.

[0003] In the existing two-roller oblique rolling and piercing device for seamless steel pipes, cooling water is directly sprayed on the surface of the rolls to moisten the rolls and cool them down when the rolls and mandrels are used to produce seamless steel pipes. However, this cooling method not only wastes water resources and makes it difficult to recycle the cooling water for secondary recycling, but also the single spray cooling method cannot directly cover all parts of the roll surface, and the roll cannot be fully cooled in the first place, which affects the service life of the roll.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a two-roller oblique rolling and piercing device for seamless steel pipes is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a two-roller cross-rolling and piercing device for seamless steel pipes to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-roller oblique rolling and punching device for seamless steel pipes, comprising a support table, four bearing brackets symmetrically distributed and fixedly arranged on the front and rear sides of the upper surface of the support table, rollers are rotatably arranged above the middle of the left and right corresponding bearing brackets, double-mouth pipes are fixedly connected to the inner surfaces of the opposite sides corresponding to the front and rear of the bearing brackets, the double-mouth pipes are communicated with the interior of the rollers, and a water inlet pipe is fixedly connected to the upper surface of the right double-mouth pipe, and a discharge pipe is fixedly connected to the upper surface of the left double-mouth pipe, the right end of the water inlet pipe is fixedly connected to a solenoid valve, the right end of the solenoid valve and the right end of the discharge pipe are fixedly connected to the same small condensation tower, and a water pump is provided at the connection between the small condensation tower and the solenoid valve.

[0007] Preferably, enclosures are fixedly installed around the upper surface of the support platform, and a core rod is provided in the middle of the roller passing through the left enclosure.

[0008] Preferably, a branch pipe is fixedly connected to the middle portion of the rear side of the water inlet pipe, and a nozzle plate is fixedly connected to the lower end of the branch pipe just below the roller.

[0009] Preferably, a filter is fixedly provided in the middle of the upper surface of the support platform, the interior of the support platform is hollow, and the lower part of the inner surface is an inclined surface.

[0010] Preferably, a suction pump is fixedly installed on the right side of the inner surface of the support platform, and a return pipe is fixedly connected to the right end of the suction pump.

[0011] Preferably, the right end of the reflux pipe passes through the support platform, and the right end of the reflux pipe is connected to the bottom of the small condensation tower.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The utility model is provided with a double-mouth pipe, a water inlet pipe, a solenoid valve, a discharge pipe and a small condensing tower. The water flow inside the water inlet pipe is controlled by the opening and closing state of the solenoid valve. The cooling water inside the small condensing tower is extracted by a water pump and discharged into the double-mouth pipe on the right through the water inlet pipe, thereby flowing into the inside of the roller. During the processing of seamless steel pipes, the roller can be quickly cooled, thereby greatly improving the service life of the roller. In addition, the used cooling water can enter the discharge pipe through the double-mouth pipe on the left and flow back into the small condensing tower for secondary cooling, thereby recycling the water flow, avoiding waste of resources, and being more environmentally friendly.

[0014] 2. The utility model is provided with branch pipes, nozzle plates, filter screens, suction pumps and return pipes. When the cooling water is transported, it will also enter the branch pipes, and then be sprayed out directly from the bottom through the nozzle plate, further cooling the steel pipes and rollers on the outside, further improving the cooling speed of the rollers and making the cooling performance stronger. At the same time, the sprayed cooling water will be filtered through the filter screen for impurities, seep into the inside of the support table and gather. The suction pump can be used to send the gathered cooling water back to the small condensation tower through the return pipe, so as to achieve the recycling of cooling water, remove evaporated water vapor, and achieve zero waste of water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall top view and cross-sectional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall front view and cross-sectional structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the condensation tower of the utility model.

[0018] In the figure: 1. Support platform; 2. Bearing bracket; 3. Roller; 4. Double-mouth pipe; 5. Water inlet pipe; 6. Solenoid valve; 7. Discharge pipe; 8. Small condensation tower; 9. Enclosure; 10. Core rod; 11. Branch pipe; 12. Nozzle plate; 13. Filter; 14. Suction pump; 15. Return pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 3 As shown, a two-roller oblique rolling and perforating device for seamless steel pipes includes a support table 1, four bearing brackets 2 are symmetrically distributed and fixedly arranged on the front and back sides of the upper surface of the support table 1, and rollers 3 are rotatably arranged above the middle of the left and right corresponding bearing brackets 2. Double-mouth pipes 4 are fixedly connected to the inner surfaces of the opposite sides corresponding to the front and back of the bearing brackets 2. The double-mouth pipes 4 are connected to the inside of the rollers 3, and a water inlet pipe 5 is fixedly connected to the upper surface of the right double-mouth pipe 4, and a discharge pipe 7 is fixedly connected to the upper surface of the left double-mouth pipe 4. The right end of the water inlet pipe 5 is fixedly connected to a solenoid valve 6, and the right end of the solenoid valve 6 and the right end of the discharge pipe 7 are both fixedly connected to the same small condensation tower 8, and a water pump is provided at the connection between the small condensation tower 8 and the solenoid valve 6.

[0021] By adopting the above technical solution, the opening and closing state of the solenoid valve 6 controls the water flow inside the water inlet pipe 5;

[0022] The cooling water in the small condensation tower 8 is extracted by a water pump and discharged into the right double-mouth pipe 4 through the water inlet pipe 5, thereby flowing into the interior of the roller 3. During the processing of the seamless steel pipe, the roller 3 can be quickly cooled;

[0023] The used cooling water can enter the discharge pipe 7 through the left double-mouth pipe 4 and re-flow into the small condensation tower 8 for secondary cooling, so as to recycle the water flow and avoid wasting resources.

[0024] Furthermore, enclosures 9 are fixedly installed around the upper surface of the support platform 1 , and a core rod 10 is provided in the middle of the roller 3 through the left enclosure 9 .

[0025] By adopting the above technical solution, the core rod 10 can perforate the middle of the steel tube blank.

[0026] Furthermore, a branch pipe 11 is fixedly connected to the middle portion of the rear side of the water inlet pipe 5 , and a nozzle plate 12 is fixedly connected to the lower end of the branch pipe 11 just below the roller 3 .

[0027] By adopting the above technical solution, the cooling water will also enter the branch pipe 11 during transportation, and then be directly sprayed out from the bottom through the nozzle plate 12, further cooling the steel pipe and the roller 3 on the outside.

[0028] Furthermore, a filter screen 13 is fixedly provided in the middle of the upper surface of the support platform 1 . The interior of the support platform 1 is hollow, and the lower part of the inner surface is an inclined surface.

[0029] By adopting the above technical solution, the filter 13 can filter impurities carried in the seepage cooling;

[0030] The inclined surface can ensure that the cooling water inside the support platform 1 converges to the right side.

[0031] Furthermore, a suction pump 14 is fixedly installed on the right side of the inner surface of the support platform 1, and a return pipe 15 is fixedly connected to the right end of the suction pump 14;

[0032] The right end of the reflux pipe 15 passes through the support platform 1 , and the right end of the reflux pipe 15 is communicated with the bottom of the small condensation tower 8 .

[0033] By adopting the above technical solution, the suction pump 14 can send the collected cooling water back to the small condensation tower 8 through the reflux pipe 15, thereby achieving the recycling of the cooling water.

[0034] Working principle: When using the two-roller oblique rolling and piercing device for seamless steel pipes, first, the steel pipe embryo is penetrated through the through hole of the enclosure 9 and enters the middle of the roller 3, and the middle of the steel pipe embryo is pierced with the core rod 10 to form a seamless steel pipe. During the production process, the water flow inside the water inlet pipe 5 is controlled by the opening and closing state of the solenoid valve 6, and the cooling water inside the small condensation tower 8 is extracted by a water pump and discharged into the right double-mouth pipe 4 through the water inlet pipe 5, thereby flowing into the inside of the roller 3. During the processing of the seamless steel pipe, the roller 3 can be quickly cooled, thereby greatly improving the service life of the roller 3, and the cooling water after use can enter the discharge pipe 7 through the left double-mouth pipe 4 and flow back into the small condensation tower. Secondary cooling is carried out in the tower 8 to recycle the water flow. When the cooling water is transported, it will also enter the branch pipe 11, and then be directly sprayed out from the bottom through the nozzle plate 12, further cooling the steel pipe and the roller 3 on the outside, further improving the cooling speed of the roller 3 and making the cooling performance stronger. At the same time, the sprayed cooling water will be filtered through the filter 13 for impurities, infiltrate into the support platform 1 and gather. The suction pump 14 can be used to send the gathered cooling water back to the small condensation tower 8 through the reflux pipe 15, so as to recycle the cooling water, remove the evaporated water vapor, and achieve zero waste of water resources. This is the working principle of the two-roller oblique rolling and piercing device of the seamless steel pipe.

Claims

1. A two-roller cross-rolling and piercing device for seamless steel pipes, comprising a support platform (1), characterized in that: Four bearing brackets (2) are symmetrically distributed and fixedly arranged on the front and rear sides of the upper surface of the support platform (1); rollers (3) are rotatably arranged on the upper middle parts of the left and right corresponding bearing brackets (2); double-mouth pipes (4) are fixedly connected to the inner surfaces of the opposite sides of the front and rear corresponding bearing brackets (2); the double-mouth pipes (4) are communicated with the inside of the rollers (3); the upper surface of the right double-mouth pipe (4) is fixedly connected to a water inlet pipe (5); and the upper surface of the left double-mouth pipe (4) is fixedly connected to a discharge pipe (7); the right end of the water inlet pipe (5) is fixedly connected to a solenoid valve (6); the right end of the solenoid valve (6) and the right end of the discharge pipe (7) are fixedly connected to the same small condensation tower (8); a water pump is provided at the connection between the small condensation tower (8) and the solenoid valve (6).

2. A two-roller cross-rolling and piercing device for seamless steel pipes according to claim 1, characterized in that: The upper surface of the support platform (1) is fixedly provided with enclosures (9) around it, and a core rod (10) is provided in the middle of the roller (3) passing through the left enclosure (9).

3. The two-roller cross-rolling and piercing device for seamless steel pipes according to claim 1, characterized in that: A branch pipe (11) is fixedly connected to the middle portion of the rear side of the water inlet pipe (5), and a nozzle plate (12) is fixedly connected to the lower end of the branch pipe (11) located just below the roller (3).

4. The two-roller cross-rolling and piercing device for seamless steel pipes according to claim 1, characterized in that: A filter screen (13) is fixedly provided in the middle of the upper surface of the support platform (1); the interior of the support platform (1) is hollow, and the lower portion of the inner surface is an inclined surface.

5. The two-roller cross-rolling and piercing device for seamless steel pipes according to claim 4, characterized in that: A suction pump (14) is fixedly installed on the right side of the inner surface of the support platform (1), and a return pipe (15) is fixedly connected to the right end of the suction pump (14).

6. A two-roller cross-rolling and piercing device for seamless steel pipes according to claim 5, characterized in that: The right end of the reflux pipe (15) passes through the support platform (1), and the right end of the reflux pipe (15) is connected to the bottom of the small condensation tower (8).

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