Centrifugal machine for pipe fitting machining

Abstract

The invention relates to a centrifugal machine for pipe fitting machining, and belongs to the field of pipe fitting machining equipment. The device comprises a pouring mechanism, a centrifugal main machine, core feeding mechanisms, a tube drawing mechanism, a protective cover and a dust removal cover, and is structurally characterized by further comprising a sand distribution mechanism, the centrifugal main machine is located in the protective cover, the front side and the rear side of the centrifugal main machine are each provided with one core feeding mechanism, and the sand distribution mechanism and the pouring mechanism are both arranged on the rear side of the centrifugal main machine; the dust removal cover and the pipe drawing mechanism are both arranged on the front side of the centrifugal main machine, the pouring mechanism and the sand distribution mechanism are arranged in the left-right direction, a pipe die is arranged in the centrifugal main machine, and the dust removal cover is arranged in a swinging mode and matched with the front end of the protective cover.

Description

Technical Field

[0001] The invention relates to a centrifuge used for pipe processing, belonging to the field of pipe processing equipment. Background Art

[0002] A centrifugal main machine is used to drive the pipe mold to rotate, and it is poured by a pouring machine. After the pipe fittings are formed, a pipe pulling machine is needed to pull the pipe fittings out of the pipe mold. In view of this, a centrifuge for reduction tank processing is disclosed in the patent document with application number 202310559855.7; in view of this, a centrifuge for center pipe processing is disclosed in the patent document with application number 202310245575.9. When processing pipe fittings, the centrifuge in the above-mentioned prior art needs to spray inside the pipe mold first, and then pour the molten steel into the pipe mold by flipping the flow channel, and the core loading crane is used for core loading. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a centrifuge for pipe processing with a reasonable structural design.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the centrifuge used for pipe processing includes a pouring mechanism, a centrifugal main machine, a core loading mechanism, a tube pulling mechanism, a protective cover and a dust removal cover, and its structural characteristics are: it also includes a sand spreading mechanism, the centrifugal main machine is located in the protective cover, and a core loading mechanism is respectively arranged on the front and rear sides of the centrifugal main machine, the sand spreading mechanism and the pouring mechanism are both arranged on the rear side of the centrifugal main machine, the dust removal cover and the tube pulling mechanism are both arranged on the front side of the centrifugal main machine, and the pouring mechanism and the sand spreading mechanism are arranged along the left and right directions.

[0005] Furthermore, a tube mold is arranged in the centrifugal main unit.

[0006] Furthermore, the dust removal cover is swingably arranged and cooperates with the front end of the protective cover.

[0007] Furthermore, the pouring mechanism includes a pouring transverse movement trolley, a pouring advance and retreat trolley, a steel ladle, a flow ladle, a chute and a flow channel. The pouring advance and retreat trolley is installed on the pouring transverse movement trolley. The steel ladle, the flow ladle, the chute and the flow channel are all arranged on the pouring advance and retreat trolley. The steel ladle cooperates with the flow ladle, the flow ladle is located above the chute, and the chute is connected to the flow channel.

[0008] Furthermore, the sand-distributing mechanism includes a sand-distributing transverse trolley, a sand-distributing advance-and-retract trolley, a sand-adding trolley, a sand-distributing frame, a sand trough assembly, a cleaning assembly and a sand-adding assembly. The sand-distributing advance-and-retract trolley is installed on the sand-distributing transverse trolley, the sand-distributing frame is installed on the sand-distributing advance-and-retract trolley, the sand trough assembly and the cleaning assembly are both installed on the sand-distributing frame, and the sand-adding assembly is installed on the sand-adding trolley, and the sand-adding assembly cooperates with the sand trough assembly.

[0009] Furthermore, the sand trough assembly includes a sand trough bracket, a sand trough body and a sand trough flip motor, the sand trough bracket is installed on the sand distribution machine frame, the sand trough body is installed on the sand trough bracket, and the motor shaft of the sand trough flip motor is connected to the sand trough body.

[0010] Furthermore, the cleaning assembly includes a cleaning rod, a cleaning wire brush and a cleaning motor, the cleaning rod is installed on the sand cloth machine frame, one end of the cleaning rod is connected to the cleaning wire brush, and the other end of the cleaning rod is connected to the motor shaft of the cleaning motor.

[0011] Furthermore, the sand adding assembly includes a sand adding screw, a sand adding pipe and a sand adding bucket, the sand adding bucket is connected to the feed port of the sand adding screw, the discharge port of the sand adding screw is connected to the sand adding pipe, and the sand adding pipe is located above the sand tank body.

[0012] Furthermore, the core upper mechanism includes a core upper frame, a core upper swing frame, a core upper assembly, a locking assembly and a lifting assembly, one end of the core upper swing frame is swingably mounted on the core upper frame, the locking assembly is mounted on the other end of the core upper swing frame, the core upper assembly is mounted in the middle of the core upper swing frame, and the height of the core upper swing frame on the core upper frame is controlled by the lifting assembly.

[0013] Furthermore, the locking assembly includes a locking cylinder and a locking card plate, the cylinder barrel of the locking cylinder and the locking card plate are both rotatably mounted on the upper core swing frame, and the piston rod of the locking cylinder is rotatably connected to the locking card plate.

[0014] Compared with the prior art, the present invention has the following advantages: the centrifuge used for pipe processing does not need to spray the inner wall of the pipe mold, but sands the inner wall of the pipe mold through a sand spreading mechanism to protect the pipe mold; while the pouring advance and retreat trolley is retreating, the molten steel can flow into the pipe mold through the inclination setting of the flow channel, ensuring uniform wall thickness of the pipe and ensuring that the residue in the molten steel is cleanly tilted; the cooling system integrates air cooling and water cooling to achieve a better cooling effect; and the use of a swing arm structure for core loading can save space. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of a centrifuge for pipe processing according to an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Schematic diagram of the partial structure of the middle pouring mechanism and sand spreading mechanism.

[0017] Figure 3 yes Figure 1 Schematic diagram of the partial structure of the centrifugal main unit, core loading mechanism, protective cover, and dust removal cover.

[0018] Figure 4 yes Figure 1 Schematic diagram of the local structure of the tube removal mechanism.

[0019] Figure 5 The figure is a schematic diagram of the top view of the centrifuge used for pipe processing according to an embodiment of the present invention.

[0020] Figure 6 yes Figure 5 Schematic diagram of the partial structure of the middle pouring mechanism and sand spreading mechanism.

[0021] Figure 7 yes Figure 5 Schematic diagram of the partial structure of the centrifugal main unit, core loading mechanism, protective cover, and dust removal cover.

[0022] Figure 8 yes Figure 5 Schematic diagram of the local structure of the tube removal mechanism.

[0023] Fig. 9 It is a right view structural schematic diagram of the centrifugal main machine and the core loading mechanism according to an embodiment of the present invention.

[0024] Fig.10 It is a left-side structural schematic diagram of a centrifuge for pipe processing according to an embodiment of the present invention.

[0025] In the figure: pouring mechanism A, sand spreading mechanism B, centrifugal main machine C, core loading mechanism D, tube pulling mechanism E, protective cover F, dust removal cover G, tube mold H, Pouring trolley A1, pouring forward and backward trolley A2, ladle A3, flow ladle A4, chute A5, flow chute A6, Sand spreading trolley B1, sand spreading forward and backward trolley B2, sand adding trolley B3, sand spreading frame B4, sand trough bracket B5, sand trough body B6, sand trough turning motor B7, cleaning rod B8, cleaning wire brush B9, cleaning motor B10, sand adding spiral B11, sand adding tube B12, sand adding bucket B13, Core loading frame D1, core loading swing frame D2, core loading assembly D3, locking cylinder D4, locking clamping plate D5. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0027] Example

[0028] See also Figures 1 to 10As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0029] The centrifuge for pipe processing in this embodiment includes a pouring mechanism A, a sand spreading mechanism B, a centrifugal main machine C, a core loading mechanism D, a tube pulling mechanism E, a protective cover F and a dust removal cover G. The centrifugal main machine C is located in the protective cover F, and a core loading mechanism D is respectively arranged on the front and rear sides of the centrifugal main machine C. The sand spreading mechanism B and the pouring mechanism A are both arranged on the rear side of the centrifugal main machine C. The dust removal cover G and the tube pulling mechanism E are both arranged on the front side of the centrifugal main machine C. The dust removal cover G is swingably arranged and cooperates with the front end of the protective cover F. The pouring mechanism A and the sand spreading mechanism B are arranged along the left and right directions. A tube mold H is arranged in the centrifugal main machine C.

[0030] The pouring mechanism A in this embodiment includes a pouring transverse movement trolley A1, a pouring advance and retreat trolley A2, a ladle A3, a flow ladle A4, a chute A5 and a flow chute A6. The pouring advance and retreat trolley A2 is installed on the pouring transverse movement trolley A1, and the ladle A3, the flow ladle A4, the chute A5 and the flow chute A6 are all arranged on the pouring advance and retreat trolley A2. The ladle A3 cooperates with the flow ladle A4, the flow ladle A4 is located above the chute A5, and the chute A5 is connected to the flow chute A6.

[0031] The sand-distributing mechanism B in this embodiment includes a sand-distributing transverse movement trolley B1, a sand-distributing advance-and-retract trolley B2, a sand-adding trolley B3, a sand-distributing frame B4, a sand trough assembly, a cleaning assembly and a sand-adding assembly. The sand-distributing advance-and-retract trolley B2 is installed on the sand-distributing transverse movement trolley B1, the sand-distributing frame B4 is installed on the sand-distributing advance-and-retract trolley B2, the sand trough assembly and the cleaning assembly are both installed on the sand-distributing frame B4, the sand-adding assembly is installed on the sand-adding trolley B3, and the sand-adding assembly cooperates with the sand trough assembly.

[0032] The sand trough assembly in this embodiment includes a sand trough bracket B5, a sand trough body B6 and a sand trough turning motor B7. The sand trough bracket B5 is installed on the sand distribution machine frame B4, the sand trough body B6 is installed on the sand trough bracket B5, and the motor shaft of the sand trough turning motor B7 is connected to the sand trough body B6.

[0033] The cleaning assembly in this embodiment includes a cleaning rod B8, a cleaning wire brush B9 and a cleaning motor B10. The cleaning rod B8 is installed on the sand cloth machine frame B4. One end of the cleaning rod B8 is connected to the cleaning wire brush B9, and the other end of the cleaning rod B8 is connected to the motor shaft of the cleaning motor B10.

[0034] The sand adding assembly in this embodiment includes a sand adding screw B11, a sand adding pipe B12 and a sand adding bucket B13. The sand adding bucket B13 is connected to the feed port of the sand adding screw B11. The discharge port of the sand adding screw B11 is connected to the sand adding pipe B12. The sand adding pipe B12 is located above the sand tank body B6.

[0035] The core loading mechanism D in this embodiment includes a core loading frame D1, a core loading swing frame D2, a core loading assembly D3, a locking assembly and a lifting assembly D6. One end of the core loading swing frame D2 is swingably mounted on the core loading frame D1, the locking assembly is mounted on the other end of the core loading swing frame D2, the core loading assembly D3 is mounted in the middle of the core loading swing frame D2, and the height of the core loading swing frame D2 on the core loading frame D1 is controlled by the lifting assembly D6.

[0036] The locking assembly in this embodiment includes a locking cylinder D4 and a locking card plate D5. The cylinder barrel of the locking cylinder D4 and the locking card plate D5 are both rotatably mounted on the upper core swing frame D2, and the piston rod of the locking cylinder D4 is rotatably connected to the locking card plate D5.

[0037] Specifically, the pouring mechanism A injects the molten steel in the ladle A3 of the unit into the rotating tube mold H through the flow ladle A4, the drop trough A5 and the flow trough A6. The machine is mainly composed of the following parts: a pouring forward and backward trolley A2, a pouring transverse trolley A1, etc.

[0038] The ladle A3 is translated to the pouring advance and retreat trolley A2 by the roller conveyor, and the pouring advance and retreat trolley A2 tilts the molten steel into the tube mold H through the ladle A4, the chute A5 and the flow chute A6; the chute A5 and the flow chute A6 are fixed and do not rotate, and the inclination and up and down of the flow chute A6 can be adjusted, and it is used in conjunction with the corundum chute bricks, and a connecting flange is provided at the connection between the chute A5 and the flow chute A6.

[0039] The pouring adopts the long flow chute A6 with an effective length of 4500mm and prefabricated brick lining. The pouring starting position is about 300-400mm away from the blocking plate on the right side to avoid the layered casting defects of the pipe fittings and the local overheating of the pipe mold H caused by the pouring of the half-long flow chute. The pouring advance and retreat trolley A2 retreats and the pouring is formed in one time.

[0040] The pouring transverse shift trolley A1 is used to realize the lateral position switching of the pouring advance and retreat trolley A2 and the sand spreading advance and retreat trolley B2. The pouring transverse shift trolley A1 and the sand spreading transverse shift trolley B1 are driven by two independent cylinders. The pouring advance and retreat trolley A2 and the sand spreading advance and retreat trolley B2 can move independently, which is convenient for workers to clean the chute and the residual iron in the flow chute earlier.

[0041] The cleaning wire brush B9 is installed at the end of the sand distribution machine frame B4, driven by a cleaning motor B10 and transmitted through the cleaning rod B8; the cylinder controls the lifting and lowering of the cleaning wire brush B9, and the pressure relief valve is used to adjust the force of the cleaning wire brush B9 on the pipe mold H to quickly clean the residual sand in the pipe mold H.

[0042] The sand trough body B6 is arranged on the side of the sand distribution machine frame B4, and is driven to rotate by a sand trough flip motor B7. The sand adding trolley B3 automatically adds sand into the sand trough body B6. After the sand trough body B6 enters the tube mold H, the sand trough body B6 flips 180°, and the sand falls evenly into the tube mold H.

[0043] The sand spreading transverse shift trolley B1 is used to realize the lateral position switching of the pouring advance and retreat trolley A2 and the sand spreading advance and retreat trolley B2. The pouring transverse shift trolley A1 and the sand spreading transverse shift trolley B1 are driven by two independent cylinders. The pouring advance and retreat trolley A2 and the sand spreading advance and retreat trolley B2 can move independently to avoid the red tube baking the sand spreading advance and retreat trolley B2 after pouring, which causes the tube to cool down after pouring and the sand cannot be added automatically.

[0044] The cooling system is provided with end cooling nozzles and tube cooling nozzles I according to the positions: the tube cooling nozzles I are divided into 5 sections, one section is about 1 meter, arranged along the axial direction of the tube mold H, each section is independently adjustable, and one water spray pipe is provided on each of the left and right sides. The distance between the nozzle and the tube mold is adjustable, and the flow rate can be manually adjusted through the pneumatic ball valve switch; the end cooling nozzles are provided with one on the left and one on the right, symmetrically made, one set at the front and one set at the rear, and are equipped with special nozzles. The flow rate can be manually adjusted through the pneumatic ball valve switch; before the tube mold H cools the molten steel to solidify, atomized tap water is used to cool it down slowly, circulating cooling water is used to cool it down quickly, and air cooling can be used to cool it down slowly.

[0045] The protective cover F can prevent the cooling water and steam from overflowing. The upper cover is provided with 2 atomized tap water cooling pipes, 4 sets of cold air fans, dust removal pipes, and steam exhaust pipes. The cold air outlets are arranged on the two left and right side walls to blow out the cooling pipe mold H horizontally. The atomized cooling water is slowly blown down from the high positions of the left and right side walls and blown onto the pipe mold H through the cold air. The staggered design of the upper and lower adjacent cold air outlets and the staggered setting of the inspection doors ensure that there are no dead angles for air cooling and atomized water cooling. The cold air is blown in from the side and the hot air is discharged from the middle position of the top. The cold air is discharged from the protective cover F after circular convection, ensuring sufficient heat exchange of the cold air and helping to improve the air cooling effect. The steam exhaust fan is used to discharge the flue gas when the pipe mold H is heated, the hot air when the pipe mold H is cooled, and the water vapor when the pipe mold H is cooled to the outside of the plant.

[0046] When placing the sand core, the first step is to rotate the upper core swing frame D2 90° to the upper sand core position through the hydraulic motor reducer; the second step is to rotate the locking clamp D5 through the locking cylinder D4, and clamp the opposite column through the locking clamp D5 to offset the horizontal reverse thrust when placing the sand core; the third step is to insert the core pressing plate and the forming plugging plate into the tube mold H by the core assembly D3; the fourth step is to release the core pressing plate, and the upper core assembly D3 controls the advance and retreat of the core pressing plate and the opening and closing of the sandwich part through the oil cylinder; the fifth step is to lower the core placing device for a distance, and the upper core assembly D3 returns to its original position; the sixth step is to rotate the upper core swing frame D2 90° through the hydraulic motor, and the upper plugging plate is ready for pouring, and the forming sand core and the core pressing plate are removed by reverse operation.

[0047] The lifting assembly D6 adopts a motor reducer and a screw lift to adjust the height of the core swing frame D2 on the core rack D1. The height change is detected by an electronic ruler. The core rack D1 adopts a left and right double-column structure to increase structural stability and facilitate the lifting of the sand cores before and after the protective cover F.

[0048] The dust hood G is swingably set at the front side of the protective hood F, and is used to collect smoke and dust when the pipe mold H is cleaned after pipe pulling. The protective hood F is used to collect smoke and dust generated from the burning or falling of the coated sand from both ends of the pipe mold H during pouring and pipe pulling. The dust hood G is composed of a frame, a slewing support, a hood body and an oil cylinder. The residual paint on the inner wall of the pipe mold is collected by the dust hood G during purging. The dust hood G is set at the front side of the centrifugal main machine C, and the sand spreading advance and retreat trolley B2 cleans and purges the rear side of the centrifugal main machine C. After the dust hood G swings into place, it is buckled on the protective hood F. The periphery is almost sealed to easily form negative pressure, thereby minimizing dust spillage; the suction hood is set at both ends of the pipe mold H to collect smoke and dust generated from the burning or falling of the coated sand from both ends of the pipe mold H during pouring and pipe pulling.

[0049] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A centrifuge for pipe processing, comprising a casting mechanism (A), a centrifugal main machine (C), a core loading mechanism (D), a pipe pulling mechanism (E), a protective cover (F) and a dust removal cover (G), characterized in that: It also includes a sand spreading mechanism (B), the centrifugal main machine (C) is located in the protective cover (F), and a core loading mechanism (D) is respectively arranged on the front and rear sides of the centrifugal main machine (C), the sand spreading mechanism (B) and the pouring mechanism (A) are both arranged on the rear side of the centrifugal main machine (C), the dust removal cover (G) and the tube pulling mechanism (E) are both arranged on the front side of the centrifugal main machine (C), and the pouring mechanism (A) and the sand spreading mechanism (B) are arranged in the left and right directions; The pouring mechanism (A) comprises a pouring transverse shifting trolley (A1), a pouring forward and backward trolley (A2), a steel ladle (A3), a flow ladle (A4), a chute (A5) and a flow chute (A6); the pouring forward and backward trolley (A2) is installed on the pouring transverse shifting trolley (A1); the steel ladle (A3), the flow ladle (A4), the chute (A5) and the flow chute (A6) are all arranged on the pouring forward and backward trolley (A2); the steel ladle (A3) cooperates with the flow ladle (A4); the flow ladle (A4) is located above the chute (A5); and the chute (A5) is connected to the flow chute (A6); The sand-distributing mechanism (B) comprises a sand-distributing transverse trolley (B1), a sand-distributing advance-retract trolley (B2), a sand-adding trolley (B3), a sand-distributing frame (B4), a sand trough assembly, a cleaning assembly and a sand-adding assembly. The sand-distributing advance-retract trolley (B2) is mounted on the sand-distributing transverse trolley (B1), the sand-distributing frame (B4) is mounted on the sand-distributing advance-retract trolley (B2), the sand trough assembly and the cleaning assembly are both mounted on the sand-distributing frame (B4), and the sand-adding assembly is mounted on the sand-adding trolley (B3), and the sand-adding assembly cooperates with the sand trough assembly.

2. The centrifuge for pipe processing according to claim 1, characterized in that: A tube mold (H) is arranged inside the centrifugal main unit (C).

3. The centrifuge for pipe processing according to claim 1, characterized in that: The dust removal cover (G) is swingably arranged and cooperates with the front end of the protective cover (F).

4. The centrifuge for pipe processing according to claim 1, characterized in that: The sand trough assembly comprises a sand trough bracket (B5), a sand trough body (B6) and a sand trough flip motor (B7); the sand trough bracket (B5) is mounted on a sand distribution machine frame (B4); the sand trough body (B6) is mounted on the sand trough bracket (B5); and a motor shaft of the sand trough flip motor (B7) is connected to the sand trough body (B6).

5. The centrifuge for pipe processing according to claim 1, characterized in that: The cleaning assembly comprises a cleaning rod (B8), a cleaning wire brush (B9) and a cleaning motor (B10); the cleaning rod (B8) is mounted on a sand cloth frame (B4); one end of the cleaning rod (B8) is connected to the cleaning wire brush (B9); and the other end of the cleaning rod (B8) is connected to a motor shaft of the cleaning motor (B10).

6. The centrifuge for pipe processing according to claim 1, characterized in that: The sand adding assembly comprises a sand adding screw (B11), a sand adding pipe (B12) and a sand adding bucket (B13); the sand adding bucket (B13) is connected to the feed port of the sand adding screw (B11); the discharge port of the sand adding screw (B11) is connected to the sand adding pipe (B12); and the sand adding pipe (B12) is located above the sand tank body (B6).

7. The centrifuge for pipe processing according to claim 1, characterized in that: The core loading mechanism (D) comprises a core loading frame (D1), a core loading swing frame (D2), a core loading assembly (D3), a locking assembly and a lifting assembly (D6); one end of the core loading swing frame (D2) is swingably mounted on the core loading frame (D1); the locking assembly is mounted on the other end of the core loading swing frame (D2); the core loading assembly (D3) is mounted in the middle of the core loading swing frame (D2); and the height of the core loading swing frame (D2) on the core loading frame (D1) is controlled by the lifting assembly (D6).

8. The centrifuge for pipe processing according to claim 7, characterized in that: The locking assembly comprises a locking cylinder (D4) and a locking clamping plate (D5); the cylinder barrel of the locking cylinder (D4) and the locking clamping plate (D5) are both rotatably mounted on the upper core swing frame (D2); and the piston rod of the locking cylinder (D4) is rotatably connected to the locking clamping plate (D5).

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