Pouring device for hub of land wind generating set

Abstract

The utility model relates to a pouring device for a hub of an onshore wind generating set, which comprises a pouring cup, a pouring gate is arranged at the bottom of the pouring cup, a sprue is arranged below the pouring gate, a recoil plate is arranged at the bottom of the sprue, a filter sheet pressing sheet is arranged below the recoil plate, a filter sheet is arranged at the lower end of the filter sheet pressing sheet, and the filter sheet pressing sheet is arranged below the recoil plate. The filter sheet is a disc-shaped filter sheet, a filter body of the disc-shaped filter sheet is provided with filter holes penetrating through the filter body from top to bottom, and a solution can be filtered by the filter holes to the outside of the filter body; the die further comprises a lower die base, a step-shaped core hole is formed in the lower die base, a floating pouring nest is arranged in the core hole, and the filtering piece is installed on the pouring nest. By means of the floating pouring nest, rigid connection between the original pouring nest and the lower die base is avoided, when the filter piece is pressed on the pouring nest through the filter piece pressing piece, automatic leveling is achieved, the filter piece is stressed in a balanced mode, and the filter piece and the pouring nest are tightly combined.

Description

TECHNICAL FIELD

[0001] The utility model relates to casting technical field especially relates to a kind of pouring device for land wind turbine hub. BACKGROUND

[0002] General pouring system includes: sprue cup, straight sprue, horizontal sprue, inner gate, sprue cup is also called outer gate.The role of sprue cup is to guide the liquid metal poured by ladle into straight sprue and into the cavity of mold.The sprue cup of small castings is mostly funnel-shaped, and the diameter of the upper opening should be more than twice the diameter of the straight sprue, and it is usually directly made on the mold during molding.The sprue cup of medium-sized or larger castings is usually basin-shaped, and it is usually made separately and placed on the mold.The castings with high quality requirements also need to set special slag collecting devices in the sprue cup.The better pouring system combines the filter sheet and the slag collecting ladle to eliminate the slag eye, sand eye and air hole of cast steel, cast iron, cast aluminum and other alloy castings due to various reasons, improve the yield of castings and improve the quality of castings.The installation method of high-temperature resistant fiber filter screen is to cut the filter screen into any size square block, place it under the sprue cup, on the horizontal sprue lap joint surface and on the horizontal sprue and inner gate lap joint surface, and press it tightly with the mold closing machine.The existing installation method and position of the filter sheet need to remove the sprue cup after pouring, and also need to remove the filter sheet, which has the problems of unreasonable structure, inconvenience to use and low work efficiency.

[0003] In the process of casting process production, the space of wind power hub special product is limited, the existing foam filter sheet is a standard part with square or circular shape, and when the filter sheets are combined, the gap is large, which leads to sand inclusion, increases the sand-iron ratio and molding cost, has poor flexibility, and the original pouring cavity is rigidly connected with the lower mold base, so when the filter sheet is pressed on the pouring cavity by the filter sheet pressing device, the filter sheet is inclined, which causes uneven stress, and the above problems need to be solved urgently. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects in the prior art, and provides a pouring device for land wind turbine hub.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is to design a pouring device for land wind turbine hub, which comprises a sprue cup, the bottom of the sprue cup is provided with a sprue, the straight sprue is arranged below the sprue, the bottom of the straight sprue is provided with a backflushing plate, the lower side of the backflushing plate is provided with a filter sheet pressing device, the lower end of the filter sheet pressing device is provided with a filter sheet, the filter sheet is a disc-shaped filter sheet, the filter body of the disc-shaped filter sheet is provided with a filter hole penetrating through the filter body from top to bottom, and the solution can be filtered through the filter hole and then to the outside of the filter body,

[0006] The lower mold base is provided with a stepped core hole, and a floating pouring cavity is arranged in the core hole.

[0007] Further, the bottom of the pouring cavity is provided with a guide rod, the guide rod is sleeved with a spring, the core hole of the lower mold base is provided with a spring seat, and the pouring cavity is inserted into the core hole through the guide rod, so that the pouring cavity is in elastic contact with the lower mold base.

[0008] Further, the end of the guide rod is provided with a threaded connection end, the threaded connection end is sleeved with a gasket and is screwed with a nut, and the gasket is locked in the threaded connection end and matched with the stepped core hole on the lower mold base through the nut.

[0009] Further, one end of the inner hole of the filter disc is provided with a ring of protruding wedge-shaped stopper, and the pouring cavity is provided with a ring of wedge-shaped stop groove.

[0010] The advantages and beneficial effects of the utility model are as follows: 1. The disc-shaped filter disc makes the structure of the filter disc more compact, avoids the original structure, and needs multiple filter discs to be installed on the filter seat, so that the whole filter structure is large in size, large in gap, leads to sand clamping, and increases sand-iron ratio and molding cost;

[0011] 2. The disc-shaped filter disc saves space and resin sand, solves product slag clamping, saves 20% of space, reduces 10% of sand-iron ratio, is simple to operate, has no combination gap, and has good filter slag effect;

[0012] 3. The floating pouring cavity avoids the rigid connection between the original pouring cavity and the lower mold base, the filter disc is automatically leveled when the filter disc is pressed and assembled on the pouring cavity, the filter disc is balanced in stress, and the filter disc and the pouring cavity are combined tightly;

[0013] 4. The wedge-shaped stopper of the filter disc is automatically matched with the wedge-shaped stop groove on the pouring cavity, so that the filter disc can be conveniently and stably installed on the pouring cavity. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 It is a front view of the utility model Figure 1 It is a front view of the utility model

[0016] In the drawing: 10, pouring cup; 20, straight gate; 30, backflushing plate; 40, filter disc pressing piece; 50, filter disc; 51, wedge-shaped stopper; 60, lower mold base; 70, pouring cavity; 71, wedge-shaped stop groove; 72, guide rod; 80, spring; 90, gasket; 100, nut. DETAILED DESCRIPTION

[0017] The specific embodiments of the present application will be further described below in conjunction with the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical scheme of the present application, and cannot be used to limit the protection scope of the present application.

[0018] Referring to Figure 1-2 As shown in the figure, a pouring device for land wind turbine hub, including a pouring cup 10, the bottom of the pouring cup 10 has a gate, the gate is provided with a straight runner 20, the bottom of the straight runner 20 is provided with a backflush plate 30, the lower side of the backflush plate 30 is provided with a filter sheet pressing sheet 40, the lower end of the filter sheet pressing sheet 40 is provided with a filter sheet 50, the filter sheet 50 is a disc-shaped filter sheet, the filter body of the disc-shaped filter sheet has a filter hole penetrating the filter body from top to bottom, and the solution can be filtered through the filter hole and then to the outside of the filter body;

[0019] It also includes a lower die holder 60, the lower die holder 60 has a stepped core hole, the core hole is provided with a floating pouring nest 70, and the filter sheet 50 is installed in the pouring nest 70;

[0020] Specifically, the bottom of the pouring nest 70 has a guide rod 72, the guide rod 72 is sleeved with a spring 80, the core hole of the lower die holder 60 is provided with a spring seat, and the pouring nest 70 is inserted into the core hole through the guide rod, so that the pouring nest 70 is in elastic contact with the lower die holder 60. In this way, when the filter sheet pressing sheet 40 is pressed on the filter sheet 50, the filter sheet 50 is automatically leveled by the matched pouring nest 70, avoiding the original pouring nest 70 being rigidly connected with the lower die holder 60. When the filter sheet 50 is pressed on the pouring nest 70 by the filter sheet pressing sheet 40, the force is unbalanced due to the inclination of the filter sheet 50, and the combination of the filter sheet 50 and the pouring nest 70 is not tight enough.

[0021] In order to stably place the pouring nest 70 on the lower die holder 60, the end of the guide rod 72 is provided with a threaded connection end, the threaded connection end is sleeved with a gasket 90 and is threadedly connected with a nut 100, the gasket 90 is locked on the threaded connection end and the stepped core hole on the lower die holder 60 by the nut 100, and the pouring nest 70 is limited on the core hole to float up and down.

[0022] In order to automatically match the filter sheet 50 with the pouring nest 70 and facilitate installation, one end of the inner hole of the filter sheet 50 is provided with a ring of protruding wedge-shaped stop 51, and a corresponding ring of wedge-shaped stop groove 71 is provided on the pouring nest 70. During installation, the wedge-shaped stop 51 of the filter sheet 50 automatically pairs with the wedge-shaped stop groove 71 on the pouring nest 70, so that the filter sheet 50 can be conveniently and stably installed on the pouring nest 70.

[0023] In one embodiment, the sprue 20 is combined by multi-section sprue, the sprue 20 is a straight pipe, two sprues 20 are connected by receiving flange, the pipe diameter of lower end sprue 20 is smaller than that of upper end sprue 20, the bottom of the sprue 20 is provided with a backflushing plate 30, the backflushing plate 30 is disc-shaped, the middle part has a through hole in communication with the sprue 20, the hole diameter of the through hole is the same as the pipe diameter of the sprue 20, the lower part of the backflushing plate 30 is the filter pressing plate 40, the filter 50 is pressed on the pouring cavity 70 by pressing the outer periphery of the filter 50, the filter 50 is disc-shaped filter, the filter body of the disc-shaped filter has filter holes penetrating the filter body from top to bottom, and the solution can be filtered through the filter holes and then to the outside of the filter body.

[0024] The filter pressing plate 40 is a circular ring type pressing plate, the lower end of the filter pressing plate 40 is pressed on the edge of the filter 50, a filter cavity is formed between the filter pressing plate 40 and the filter 50, and the sprue 20 is in communication with the filter cavity.

[0025] During pouring, the molten iron enters between the filter pressing plate 40 and the filter 50 arranged in the lower die seat 60, enters the filter box formed by the filter 50 and the filter pressing plate 40, and then enters the mold cavity through the pouring gate to form the product.

[0026] The above is only the preferred embodiment of the present application, it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A casting device for an onshore wind turbine hub, comprising a pouring cup, a pouring gate at the bottom of the pouring cup, a sprue below the pouring gate, a recoil plate at the bottom of the sprue, a filter press below the recoil plate, and a filter at the lower end of the filter press, characterized in that: The filter disc is a disc-shaped filter disc, and the filter body of the disc-shaped filter disc has filter holes that penetrate the filter body from top to bottom. The solution can be filtered through the filter holes and then flow to the outside of the filter body. It also includes a lower die base, which has a stepped core hole. A floating pouring nest is provided in the core hole, and the filter is installed on the pouring nest.

2. A casting device for an onshore wind turbine hub according to claim 1, characterized in that: The bottom of the pouring nest is provided with a guide rod, a spring is mounted on the guide rod, a spring seat is provided on the core hole of the lower die seat, the pouring nest is inserted into the core hole through the guide rod, so that the pouring nest is in elastic contact with the lower die seat.

3. The casting device for the hub of an onshore wind turbine generator set according to claim 2, characterized in that: The end of the guide rod is provided with a threaded connection end, the threaded connection end is covered with a gasket and threadedly connected with a nut, and the gasket is locked to the threaded connection end through the nut to cooperate with the stepped core hole on the lower mold base.

4. The casting device for an onshore wind turbine hub according to claim 1, characterized in that: One end of the inner hole of the filter plate is provided with a circle of protruding wedge-shaped stoppers, and the corresponding pouring nest is provided with a circle of wedge-shaped stop grooves.

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