A novel spray cooling device facilitating rapid replacement of pipe molds

Abstract

The present invention provides a novel spray cooling device facilitating quick replacement of pipe molds, which includes a centrifuge protective cover and a pipe mold carrier wheel mechanism, and further includes: a pipe mold socket spray cooling mechanism, a pipe mold spigot spray cooling mechanism, a spray cooling mechanism on both sides of the pipe mold body, and a spray cooling mechanism at the bottom of the pipe mold body located inside the centrifuge protective cover; the pipe mold socket spray cooling mechanism and the pipe mold spigot spray cooling mechanism have the same structure and are respectively located at the pipe mold socket and the pipe mold spigot ends. The pipe mold socket spray cooling mechanism and the pipe mold spigot spray cooling mechanism of the present invention can rotate. When hoisting and replacing the pipe mold, the semi-circular main pipes on both sides of the socket and spigot open at a certain angle, facilitating the up-and-down hoisting of the pipe mold; the spray cooling mechanisms on both sides of the pipe mold body are fixed on the inner wall of the centrifuge protective cover, and the setting of the rotating device ensures that the portal main pipe can be adjusted at any angle along the bottom rotating shaft, meeting the spray cooling requirements for all pipe mold bodies with specifications of DN1100 - 3000.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe casting processing equipment, and particularly relates to a novel spray cooling device that facilitates the rapid replacement of pipe molds. Background Art

[0002] At present, large-diameter cast iron pipes are all produced by the hot mold method centrifugal casting process, and the pipe mold has become the main forming equipment for the hot mold method centrifugal casting of pipes. For each cast iron pipe produced, the inside of the pipe mold is subjected to the impact of molten iron at a temperature above 1300°C once. The different cooling rates of each section (socket section, pipe body section, and spigot section) of the pipe mold will result in differences in the metallographic structure of the cast iron pipe, thereby affecting the quality of the cast iron pipe. Generally, the pipe mold cooling device will perform segmented spray cooling on the outer wall of the pipe mold, and control the cooling water flow rate of each segment through different water inlet pipes and regulating valves, so as to achieve the effect of uniform cooling of each section of the pipe mold. The largest amount of cooling water is in the pipe body section of the pipe mold. Usually, the cooling pipes of the pipe body section are arranged on both sides of the pipe mold, and the support of the pipe body cooling pipe is installed on the large base under the pipe mold. When replacing the pipe mold, it is necessary to remove or disassemble all the centrifuge cover and the pipe mold spray device, and the most laborious work in disassembling the spray device is the pipe body spray mechanism. However, the pipe body spray cooling pipe must be completely removed to make room for the replacement of the pipe mold. This has caused the need to remove the support of the pipe mold cooling pipe every time the pipe mold is replaced, which not only increases the workload, but also prolongs the pipe mold replacement time and reduces the production efficiency of cast iron pipes.

[0003] Affected by the pipe body spray structure of the existing pipe mold spray device, every time the pipe mold is replaced (i.e., the pipe mold and the idler wheel set are replaced at the same time), it is necessary to remove the pipe body spray mechanism and the socket and spigot spray mechanisms. In particular, the disassembly and assembly of the pipe body spray mechanism are very cumbersome. When the nozzle sprays vertically on the pipe mold, the cooling efficiency is the best. However, due to the large number of specifications from DN1100 to 3000 and the large span, the nozzles of the traditional spray cooling device often cannot be perpendicular to all pipe molds, resulting in a reduction in cooling efficiency. Summary of the Invention

[0004] In order to solve the problems of the existing technology, the present invention provides a novel spray cooling device that facilitates the replacement of the pipe mold and the idler wheel set. When replacing the pipe mold and the idler wheel set, the base of the socket and spigot spray cooling mechanism is inserted into the installation hole of the idler wheel set base, which is convenient for removal.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A novel spray cooling device that facilitates the rapid replacement of pipe molds, including a centrifuge protective cover and a pipe mold idler wheel mechanism, and further includes: a pipe mold socket spray cooling mechanism, a pipe mold spigot spray cooling mechanism, a pipe mold body two-side spray cooling mechanism, and a pipe mold body bottom spray cooling mechanism located inside the centrifugal protective cover;

[0007] The spray cooling mechanism for the socket of the pipe mold has the same structure as that for the spigot of the pipe mold, and they are respectively located at the socket end and the spigot end of the pipe mold. The spray cooling mechanism for the socket of the pipe mold includes a semi-circular main pipe group symmetrically arranged on the left and right, located on both sides of the socket of the pipe mold. The semi-circular main pipe group consists of two upper and lower semi-circular main pipes, and a plurality of cooling nozzles are evenly distributed on the semi-circular main pipes. The semi-circular main pipes are fixed to the drag wheel base of the pipe mold drag wheel mechanism by means of a first rotary joint.

[0008] The spray cooling mechanisms on both sides of the pipe body of the pipe mold include two groups of upper and lower symmetrically arranged portal main pipes, located on both sides of the pipe body of the pipe mold and horizontally arranged along the pipe body line direction of the pipe mold. A plurality of cooling nozzles are evenly distributed on the horizontal straight pipes of each portal main pipe. The bottom of the vertical pipe of the portal main pipe is fixed on the rotating device, and the rotating device is fixed to the inner wall of the centrifuge protective cover by means of a fixed bracket. The rotating device drives the portal main pipe to rotate by means of a second rotary joint.

[0009] The spray cooling mechanism at the bottom of the pipe body of the pipe mold includes two horizontal straight main pipes, located at the bottom of the pipe body of the pipe mold and horizontally arranged along the pipe body line direction of the pipe mold. A plurality of cooling nozzles are evenly distributed on the two horizontal straight main pipes, and the horizontal straight main pipes are fixed to the drag wheel base.

[0010] Further, the spray cooling mechanism for the socket of the pipe mold and the spray cooling device mechanism for the spigot of the pipe mold further include a manual rotation and swing device, which is located on the semi-circular main pipe and drives the semi-circular main pipe to rotate along its central rotation axis.

[0011] Further, the spray cooling mechanisms on both sides of the pipe body of the pipe mold are connected to the main main pipe by means of hoses and quick connectors. When replacing the pipe mold, the quick connectors are disassembled, and the spray cooling mechanisms on both sides of the pipe body of the pipe mold and the centrifuge protective cover move towards the socket direction of the pipe mold together.

[0012] Further, the rotating device includes a rotating base, an adjusting pull rod and a sector adjusting plate. The bottom of the vertical pipe of the portal main pipe is fixed on the rotating base. The handle part of the sector adjusting plate is fixedly connected to the rotating shaft of the rotating base. A plurality of through holes are provided on the sector surface of the sector adjusting plate. Both ends of the adjusting pull rod are provided with bolt holes and are fixed to the through holes of the sector adjusting plate and the fixed bracket by means of pin shafts.

[0013] Further, the rotating device further includes a manual winch, which is connected to the rotating base by means of a wire rope and a fixed pulley, and the portal main pipe rotates with the rotation of the manual winch.

[0014] Further, the spray cooling mechanism at the bottom of the pipe body of the pipe mold, the spray cooling mechanism for the socket of the pipe mold and the spray cooling mechanism for the spigot of the pipe mold are respectively connected to the main pipe by means of hoses and quick connectors.

[0015] The beneficial effects obtained by the present invention are as follows:

[0016] 1. The spray cooling mechanism for the socket of the pipe mold and the spray cooling mechanism for the spigot of the pipe mold can rotate. When hoisting and replacing the pipe mold, the semi-circular main pipes on both sides of the socket and spigot open at a certain angle, facilitating the up and down hoisting of the pipe mold.

[0017] 2. The spray cooling mechanisms on both sides of the pipe body of the pipe mold are fixed on the inner wall of the centrifugal protective cover. The rotation device ensures that the portal main pipe can be adjusted at any angle along the bottom rotating shaft, meeting the spray cooling requirements for the pipe bodies of all pipe molds with specifications from DN1100 to 3000.

[0018] 3. Quick connectors are installed at the water inlets of all spray pipes, facilitating the disassembly and assembly of the corresponding spray pipes and shortening the time for changing the pipe mold type.

[0019] 4. The centrifuge housing can move by itself through its own reduction motor, and the spray cooling mechanisms on both sides of the pipe body of the pipe mold are removed together with the centrifuge housing, greatly saving the time for replacing the pipe mold and improving the production efficiency of cast pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a left view of the present invention;

[0022] Figure 3 is a front view of the spray cooling mechanism for the socket of the pipe mold of the present invention;

[0023] Figure 4 is a left view of the spray cooling mechanism for the socket of the pipe mold of the present invention;

[0024] Figure 5 is a front view of the spray cooling mechanisms on both sides of the pipe body of the pipe mold of the present invention;

[0025] Figure 6 is a sectional view of the present invention Figure 5 along the A - A direction;

[0026] Among them, 1 represents the centrifuge protective cover, 2 represents the pipe mold trolley mechanism, 3 represents the semi-circular main pipe, 4 represents the cooling nozzle, 5 represents the first rotary joint, 6 represents the trolley base, 7 represents the portal main pipe, 8 represents the fixed bracket, 9 represents the second rotary joint, 10 represents the horizontal straight main pipe, 11 represents the manual rotary swing device, 12 represents the quick connector, 13 represents the rotating base, 14 represents the adjusting rod, 15 represents the sector adjusting plate, 16 represents the manual winch, and 17 represents the fixed pulley. DETAILED DESCRIPTION OF THE INVENTION

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0028] As Figures 1-6 shown: A novel spray cooling device for facilitating the quick replacement of a pipe mold, including a centrifuge protective cover 1 and a pipe mold carrier wheel mechanism 2, and further including: a pipe mold socket spray cooling mechanism, a pipe mold spigot spray cooling mechanism, a pipe mold body two-side spray cooling mechanism, and a pipe mold body bottom spray cooling mechanism located inside the centrifuge protective cover 1; the pipe mold socket spray cooling mechanism and the pipe mold spigot spray cooling mechanism have the same structure and are respectively located at the pipe mold socket and the pipe mold spigot ends; the pipe mold socket spray cooling mechanism includes a semi-circular main pipe group symmetrically arranged on the left and right, located on both sides of the pipe mold socket; the semi-circular main pipe group is composed of two upper and lower semi-circular main pipes 3, and a plurality of cooling nozzles 4 are evenly distributed on the semi-circular main pipe 3; the semi-circular main pipe 2 is fixed to the carrier wheel base 6 of the pipe mold carrier wheel mechanism 2 by means of a first rotary joint 5, and the first rotary joint 5 is fixed to the carrier wheel base 6 by means of a rotary head support; the pipe mold body two-side spray cooling mechanism includes two sets of upper and lower symmetrically arranged portal main pipes 7, located on both sides of the pipe mold body and horizontally arranged along the pipe mold body line direction, and a plurality of cooling nozzles 4 are evenly distributed on the horizontal straight pipe of each portal main pipe 7; the bottom of the vertical pipe of the portal main pipe 7 is fixed to a rotating device, and the rotating device is fixed to the inner wall of the centrifuge protective cover 1 by means of a fixed bracket 8; the rotating device drives the portal main pipe 7 to rotate by means of a second rotary joint 9; the pipe mold body bottom spray cooling mechanism includes two horizontal straight main pipes 10, located at the bottom of the pipe mold body and horizontally arranged along the pipe mold body line direction, and a plurality of cooling nozzles 4 are evenly distributed on the two horizontal straight main pipes 10, and the horizontal straight main pipes 10 are fixed to the carrier wheel base 6.

[0029] The pipe mold socket spray cooling mechanism and the pipe mold spigot spray cooling device mechanism further include a manual rotation and swing device 11, which is located on the semi-circular main pipe 3 and drives the semi-circular main pipe 3 to rotate along its central rotation axis.

[0030] The pipe mold body two-side spray cooling mechanism is connected to the main main pipe by means of a hose and a quick connector 12. When replacing the pipe mold, the quick connector 12 is disassembled, and the pipe mold body two-side spray cooling mechanism and the centrifuge protective cover 1 move together towards the pipe mold socket direction.

[0031] The rotating device includes a rotating base 13, an adjusting pull rod 14, and a sector adjusting plate 15; the bottom of the vertical pipe of the portal main pipe 7 is fixed on the rotating base 13, the handle part of the sector adjusting plate 15 is fixedly connected to the rotating shaft of the rotating base 13, a plurality of through holes are provided on the fan surface of the sector adjusting plate 15, bolt holes are respectively provided at both ends of the adjusting pull rod 14, and the adjusting pull rod 14 is fixed to the through holes of the sector adjusting plate 15 and the fixed bracket 8 by means of a pin shaft.

[0032] The rotating device further includes a manual winch 16, the manual winch 16 is connected to the rotating base 13 by means of a wire rope and a fixed pulley 17, and the portal main pipe 7 rotates with the rotation of the manual winch 16.

[0033] The spray cooling mechanism at the bottom of the pipe mold body, the spray cooling mechanism at the pipe mold socket, and the spray cooling mechanism at the pipe mold spigot are respectively connected to the main pipe by means of hoses and quick connectors 12.

[0034] During specific implementation: Except for the different numbers and angles of the cooling nozzles 4, the other structural forms and installation methods of the spray cooling mechanism at the pipe mold socket and the spray cooling mechanism at the pipe mold spigot are the same. Each specification of the pipe mold corresponds to a semi-circular main pipe 3 of a different specification. The spray cooling mechanisms on both sides of the pipe mold body are divided into 4 rows of horizontally arranged portal main pipes 7, which are distributed on both sides of the pipe mold body in two upper and lower rows. The portal main pipes 7 can be adjusted to different angles through their respective rotating bases 13 and the second rotary joint 9, so that the distance between the cooling nozzles 4 and the outer wall of the pipe mold can be kept within a reasonable range. At the same time, the spray cooling mechanisms on both sides of the pipe mold body are installed on the inner walls of both sides of the centrifuge protective cover 1. In this way, when replacing the pipe mold and the pipe mold drag wheel mechanism 2, as long as the quick connector 12 is disassembled and the centrifuge protective cover 1 is removed from the centrifuge main machine station, the spray cooling mechanisms on both sides of the pipe mold body can move together with the centrifuge protective cover 1, so as to vacate the replacement space for the pipe mold and the pipe mold support wheel mechanism 2.

[0035] When replacing, the centrifuge protective cover 1 is first moved out of the working state of the centrifuge main unit, the pipe mold and the pipe mold supporting wheel mechanism 2 are installed in place, and then the pipe mold socket spraying cooling mechanism and the pipe mold spigot spraying cooling mechanism are installed on the supporting wheel base 6 on the socket and spigot sides of the pipe mold. The semi-circular main pipe 3 is manually rotated by the swinging device 11 to a proper distance from the pipe mold. Finally, the water inlet of the semi-circular main pipe 3 and the ground pipe water supply pipe are connected by a metal hose with a quick connector 12. In the second step, the spraying cooling mechanisms on both sides of the pipe mold body and the centrifuge protective cover 1 move to the centrifuge main unit working station by themselves. Then, the steel wire is extended by the manual winch 16 at the lower part of the centrifuge protective cover 1. One end of the steel wire bypasses the fixed pulley 17 at the top and is connected to the rotating base 13 together. By turning the manual winch 16, the portal main pipe 7 can be swung to a proper angle along the rotating base 13 at the bottom to ensure that the cooling nozzle 4 of the portal main pipe 7 is also at a proper distance from the outer surface of the pipe mold. The manual winch 16 and the fixed pulley 17 are only used to adjust the angle of the portal main pipe 7. The fixing of the portal main pipe 7 is completed by the adjusting tie rod 14 and bolts. To prevent the bolts from loosening, there are multiple uniformly distributed through holes, namely dense pin holes, at the edge of the sector adjusting plate 15 at the bottom of the pipe. There are also 3 corresponding pin holes opened on the fixed bracket 8 parallel to the sector adjusting plate 15. When the angle of the portal main pipe 7 is adjusted, the sector adjusting plate 15 and the fixed bracket 8 are fixed with pins. When replacing the pipe mold and the pipe mold supporting wheel mechanism 2, only the above implementation method needs to be repeated once in the reverse order of the steps.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel spray cooling device facilitating rapid replacement of a pipe mold, comprising a centrifuge protective cover (1) and a pipe mold drag wheel mechanism (2), characterized in that: It also includes: A die socket spray cooling mechanism, a die spigot spray cooling mechanism, a spray cooling mechanism on both sides of the die body, and a spray cooling mechanism at the bottom of the die body, which are located inside the centrifuge protective cover (1); The die socket spray cooling mechanism and the die spigot spray cooling mechanism have the same structure and are respectively located at the die socket end and the die spigot end; the die socket spray cooling mechanism includes a semi-circular main pipe group symmetrically arranged on the left and right, which is located on both sides of the die socket; the semi-circular main pipe group is composed of two upper and lower semi-circular main pipes (3), and a plurality of cooling nozzles (4) are evenly distributed on the semi-circular main pipes (3); the semi-circular main pipes (3) are fixed to the drag wheel base (6) of the die drag wheel mechanism (2) by means of a first rotary joint (5); The spray cooling mechanism on both sides of the die body includes two sets of upper and lower symmetrically arranged portal main pipes (7), which are located on both sides of the die body and are horizontally arranged along the die body line direction. A plurality of cooling nozzles (4) are evenly distributed on the horizontal straight pipes of each portal main pipe (7); the bottom of the vertical pipe of the portal main pipe (7) is fixed on a rotating device, and the rotating device is fixed to the inner wall of the centrifuge protective cover (1) by means of a fixed bracket (8); the rotating device drives the portal main pipe (7) to rotate by means of a second rotary joint (9); The spray cooling mechanism at the bottom of the die body includes two horizontal straight main pipes (10), which are located at the bottom of the die body and are horizontally arranged along the die body line direction. A plurality of cooling nozzles (4) are evenly distributed on the two horizontal straight main pipes (10), and the horizontal straight main pipes (10) are fixed to the drag wheel base (6); The spray cooling mechanism on both sides of the die body is connected to the main main pipe by means of a hose and a quick connector (12). When replacing the die, the quick connector (12) is disassembled, and the spray cooling mechanism on both sides of the die body and the centrifuge protective cover (1) move together towards the die socket direction; The rotating device includes a rotating base (13), an adjusting pull rod (14), and a sector adjusting plate (15); the bottom of the vertical pipe of the portal main pipe (7) is fixed to the rotating base (13), the handle part of the sector adjusting plate (15) is fixedly connected to the rotating shaft of the rotating base (13), a plurality of through holes are provided on the sector surface of the sector adjusting plate (15), and bolt holes are respectively provided at both ends of the adjusting pull rod (14), and the adjusting pull rod (14) is fixed to the through holes of the sector adjusting plate (15) and the fixed bracket (8) by means of a pin shaft; 2. The novel spray cooling device for facilitating quick replacement of a pipe mold according to claim 1, characterized in that: The die socket spray cooling mechanism and the die spigot spray cooling device mechanism also include a manual rotating and swinging device (11), which is located on the semi-circular main pipe (3) and drives the semi-circular main pipe (3) to rotate along its central rotation axis; 3. The novel spray cooling device for facilitating quick replacement of a pipe mold according to claim 1, wherein: The rotating device also includes a manual winch (16), the manual winch (16) is connected to the rotating base (13) by means of a wire rope and a fixed pulley (17), and the portal main pipe (7) rotates with the rotation of the manual winch (16).

4. The novel spray cooling device for facilitating quick replacement of a pipe mold according to claim 1, wherein: The spray cooling mechanism at the bottom of the tube body of the pipe mold, the spray cooling mechanism at the socket of the pipe mold, and the spray cooling mechanism at the spigot of the pipe mold are respectively connected to the main pipeline by means of hoses and quick connectors (12).

Images