CN213763900U

CN213763900U - Self-hardening resin sand mixer outlet structure

Info

Publication number: CN213763900U
Application number: CN202022669800.6U
Authority: CN
Inventors: 李宏兴; 王立波
Original assignee: Henan Xurui Alloy New Material Manufacturing Co ltd
Current assignee: Henan Xurui Alloy New Material Manufacturing Co ltd
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-07-23
Anticipated expiration: 2030-11-18

Abstract

An outlet structure of a self-hardening resin sand mixer belongs to the field of casting. The utility model discloses an outside of roller mill export is provided with the gas receiver, and the gas receiver includes gas inlet and gas outlet, is fixing the sealing bag suitable for reading on the gas outlet flange of gas receiver, and the sealing bag suitable for reading is located the sand box, and the gas outlet and the vertical direction of gas receiver have a contained angle alpha, the inside intercommunication of gas receiver inner wall and sealing bag, the external compressed air of gas receiver air inlet. The utility model provides a self hardening resin sand roller mill outlet structure can improve the degree of compaction of the automatic tight real molding sand of self hardening sand roller mill, improves the surface quality of casting product to satisfy the needs of producing the high-end casting product.

Description

Self-hardening resin sand mixer outlet structure

Technical Field

The utility model relates to a roller mill exit structure, in particular to self hardening resin sand roller mill exit structure belongs to the casting field.

Background

The self-hardening resin sand molding in the casting industry is characterized in that sand is mixed by an automatic continuous sand mixer, the mixed molding sand automatically flows out of an outlet of the sand mixer and falls into a sand box for molding in a free-fall mode, and a mold is arranged in the sand box. If the core is manufactured, the core sand flowing out of the automatic sand mixer falls into a core box for manufacturing the core in a free-falling mode. The compactness of the molding sand falling from the free falling body sometimes cannot meet the casting quality requirement and is often tamped by manual assistance, however, during manual compaction treatment, the surrounding environment is not ideal enough and is unfavorable for human health, a general operation method is to install a vibration table below a sand box, a mold or a core box, start the vibration table before the sand discharging is finished and tamp the molding sand or the core sand by vibration. However, the vibration of the vibration table can cause the sand box and the mold to move, so that the position of the mold in the sand box deviates, and the vibration of the mold also causes the size and shape errors of the inner wall of the sand mold cavity. Such a production method cannot meet the requirements of high-end castings for high product appearance quality. At present, no sand mixer for compacting molding sand by high-speed jet aiming at self-hardening sand exists.

Fig. 5 is a schematic view of an arrangement structure of an outlet of a conventional sand mixer and a sand mold. In the prior art, the sand mixer comprises a large arm 26, a motor 27 and a sand mixer outlet 20, the molding sand 21 is mixed in the sand mixer and enters a sand box 23 from the sand mixer outlet 20, a mold 24 is arranged in the sand box 23 and is arranged above a mold bottom plate 25, the mold bottom plate 25 is arranged on a compact horizontal bottom surface, and the molding sand 21 is compacted in the sand box 23 to form a sand mold.

However, since the free fall compact of the molding sand is used, the strength is insufficient, and it is only possible to compact it manually or compact it by a vibrator.

How to improve the compactness of the self-compacting molding sand of a self-hardening sand mixer is a subject to be faced by those skilled in the casting field.

Disclosure of Invention

In moulding to the foundry industry self-hardening resin sand, the molding sand compactness of free fall whereabouts can not reach the casting quality requirement sometimes, and mechanical vibration makes the mould remove and can produce the size deviation, and artifical compactedness exists takes a lot of work and time and to the unfavorable problem of health, the utility model provides a self-hardening resin sand mixer exit structure, its purpose is the compactness that improves the automatic compactedness molding sand of self-hardening sand mixer, improves the surface quality of casting product to satisfy the needs of producing the high-end casting product.

The technical scheme of the utility model is that: a gas storage box is arranged on the periphery of the edge of an outlet of a self-hardening resin sand mixer, the gas storage box comprises a gas inlet and a gas outlet, the gas outlet of the gas storage box faces a sand box arranged downwards, an upper opening of a sealing bag is fixed on the periphery of the gas outlet of the gas storage box, a lower opening of the sealing bag extends into the sand box, and compressed air is connected to the gas inlet of the gas storage box;

further, a flange is arranged on the periphery of a gas outlet of the gas storage box, an upper opening of the sealing bag is fixed on the flange, and a valve is arranged on a gas inlet of the gas storage box;

further, a gas outlet of the gas storage box is positioned on the inner side of the bottom of the gas storage box and is inclined inwards and downwards by an angle alpha, wherein the angle alpha = 10-20 degrees;

further, the gas outlet of the gas storage box is of a slit structure, and the width of the slit is 2-10 mm.

The utility model discloses the positive effect who has is: the periphery or two sides of the outlet of the sand mixer are provided with the gas storage boxes, compressed air can be sent into the gas storage boxes, then the compressed air is sent into the sealing bag through the gas outlets of the gas storage boxes, and the self-hardening resin sand sent from the outlet of the sand mixer can be accelerated in the sealing bag through the compressed air, so that the self-hardening resin sand can be correspondingly compacted in the sand box, the hardness of the sand mold is improved, the circulation and the flow of the compressed air can be controlled through arranging the valve on the gas inlet of the gas storage boxes, particularly, when the sand is added at the outlet of the mixer, the compressed air is opened, the speed of the self-hardening resin sand entering the sand mold can be accelerated, the self-hardening resin sand is injected into the sand mold at a high speed, and the compactness of the sand mold is improved; the gas outlet of the gas storage box is designed into a slit structure and is inclined by an included angle alpha, so that the sand in the center of the sand flow can fall down in an accelerated manner. The utility model discloses an utilize compressed air, the molding sand can be under compressed air's drive, with the assigned position in high acceleration directive sand box, with this make the molding sand automatic higher degree of compaction that has formed, manual assistance compact molding sand has been removed from, manual assistance compact intensity of labour has been reduced, the disadvantage of shaking table messenger sand box and mould removal has been avoided, can guarantee that the mould and the psammitolite that set up in the formation precision and the sand type of sand mould do not take place the displacement, can improve the precision of sand mould, and then guarantee the quality of foundry goods.

Drawings

Fig. 1 is provided with the utility model discloses a whole schematic diagram of roller mill.

Fig. 2 is a schematic view of the longitudinal section structure of the present invention.

Fig. 3 is a schematic view of the bottom view structure of the present invention.

Fig. 4 is a schematic side view of the present invention.

FIG. 5 is a schematic diagram of an arrangement structure of an outlet of a prior sand mixer and a sand mold.

Reference numbers: 11-gas storage box, 12-gas inlet, 13-gas outlet, 13-flange, 14-valve, 15-gas pipe, 16-sub-gas pipe, 17-main gas pipe, 18-gas storage tank, 19-compressed air main line, alpha-included angle, E-slit width 20-sand mixer outlet, 21-molding sand, 22-sealing bag, 23-sand box, 24-mold, 24 a-mold bottom plate, 25-bottom surface, 26-automatic sand mixer big arm, 27-motor and 28-sand mixer.

Detailed Description

The following describes the embodiments of the present invention in detail with reference to the accompanying drawings.

The technical scheme of the utility model is a self-hardening resin sand roller mill outlet structure, figure 1 is provided with the utility model discloses a whole schematic diagram of roller mill, figure 2 are the utility model discloses a longitudinal section structure schematic diagram. Fig. 3 is a schematic bottom view of the present invention. Fig. 4 is a schematic side view of the present invention. The self-hardening resin sand mixer outlet structure comprises a mixer outlet 20, a gas storage box 11 is arranged on the periphery or the outer side of the mixer outlet 20, the gas storage box 11 comprises a gas inlet 12 and a gas outlet 13, a sealing bag 22 fixed on the peripheral edge of the gas outlet 13 of the gas storage box 11 is provided with an upper opening, a lower opening of the sealing bag 22 extends into a sand box 23 arranged below, and the gas inlet 12 of the gas storage box 11 is connected with compressed air.

In this embodiment, an air pipe 15 is connected to an air inlet 12 of the air storage box 11, the air pipe 15 is connected to a sub-pipe of an outlet of an air storage tank 18, the air storage tank 18 includes a main air pipe 17 of the outlet, and an inlet of the air storage tank 18 is connected to a compressed air main line 19.

A flange 13a is provided on the outer periphery of the gas outlet 13 of the gas holder 11, and in order to prevent the molding sand 21 from splashing and sloshing, the flange 13a is provided on the outer periphery of the gas outlet 13 of the gas holder 11, the upper opening of the seal bag 22 is fixed to the flange 13a, the seal bag 22 is provided between the gas outlet 13 of the gas holder 11 and the flask 23, and the flask 23 is provided below the seal bag 22.

An air pipe 15 is linked on the air inlet 12 of the air storage box 11, the air pipe 15 is linked with a valve 14, the valve 14 is arranged, and the valve 14 controls the air volume of the compressed air.

An inclined vent hole is formed between the gas outlet 13 of the gas storage box 11 and the outlet 20 of the sand mixer, and the included angle alpha between the vent hole and the vertical direction is 10-20 degrees.

The gas outlet 13 of the gas storage box 11 is of a slit structure, and the width E of the slit is 2-10 mm.

In the present embodiment, the outlet 20 of the sand mixer is a rectangular structure, the gas storage box 11 is an integrated annular structure, and slits are provided on four sides between the gas storage box 11 and the outlet 20 of the sand mixer as the gas outlet 13.

Carrying out the step

Firstly, measuring the sizes L and K of an outlet of an automatic sand mixer, then designing and determining other sizes of the structure according to needs, determining and selecting materials, generally using a common A3 steel plate, secondly drawing a drawing, thirdly selecting materials according to the designed drawing, blanking, welding and manufacturing the structure, fifthly, welding the manufactured components on the outlet of the automatic sand mixer, connecting compressed air conveyed from an air storage bag, and installing an air valve. All the preparation is appropriate, and the operation can be carried out.

Firstly, the length of a cloth bag is adjusted when the sand mixer works, secondly, the sand mixer is started according to a normal procedure, sand at the head of the sand mixer is discharged, thirdly, the outlet of the sand mixer is opposite to the part needing sand discharge in the sand box, and an air valve for supplying air to the structure is immediately opened, so that the sand mixer can work normally.

Example 1

Referring to fig. 2-4, my company has a 10t/h automatic furan resin sand mixer with an outlet size of L =150mm and K =90mm, and we design the size as follows: a =100mm, H =120mm, B =30mm, C =20mm, α =16 °, E =4mm, selecting A3 steel plate material with 4mm wall thickness, blanking according to design size, welding, installing the gas inlet 12 component, finally welding the manufactured component on the outlet of the automatic sand mixer, connecting the compressed air delivered from the gas storage bag, and installing the gas valve. When all the materials are properly prepared, the modeling is started. Compared with the prior art without the structure, the method for producing the high-end intelligent textile machine wallboard casting has the advantages that other production processes and materials are unchanged, the appearance quality of the casting produced by using the structure is greatly improved compared with the casting produced without using the structure, the former of the main surface roughness of the product can reach Ra =25, and the latter Ra is more than or equal to 50.

Example 2

The company has a 5t/h automatic furan resin sand mixer, which is specially used for core production, the outlet size of the automatic furan resin sand mixer is L =120mm, K =70mm, and the designed size is as follows: a =70mm, H =90mm, B =25mm, C =20mm, a =15 °, E =2.5mm, selecting A3 steel plate material with 4mm wall thickness, blanking according to design size, welding, installing the gas inlet 12 component, finally welding the manufactured component on the outlet of the automatic sand mixer, connecting compressed air delivered from the gas storage bag, and installing the valve 14. When all the materials are properly prepared, the modeling is started. Compared with the sand core without the structure, the sand core for producing the high-end intelligent screw compressor casting has the advantages that other production processes and materials are unchanged, the edge and corner compactness of the sand core produced by using the structure is the same as that of other parts, the surface quality of the inner cavity of the casting product is greatly improved compared with the sand core without the structure, the roughness of the main surface of the inner cavity can reach Ra =25, and the Ra of the inner cavity is more than or equal to 50.

Referring to fig. 2-4, the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and may be applied to various self-hardening resin sand or sodium silicate sand production in foundry enterprises, and may be used for both molding and core making to improve the appearance quality of the product.

The utility model is not only suitable for the mass production of the assembly line, but also suitable for the small-batch production of single pieces; the sand casting core is not only suitable for sand casting, but also suitable for sand casting cores; the sand core can be used for the automatic sand mixer for molding various molding sands, such as various self-hardening resin sands, various sodium silicate sands and the like.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the present invention can be applied to the production of various self-hardening resin sands or water glass sands in foundry enterprises, and can improve the appearance quality of products, both by molding and core making.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and the present invention can be applied to various self-hardening resin sands or sodium silicate sands in foundry enterprises, and can improve the appearance quality of products, both by molding and core making.

The utility model discloses a set up gas storage box 11 in sand mixer export 20 periphery or both sides, can send compressed air to in the gas storage box 11, send to the sealing bag 22 by gas outlet 13 of gas storage box 11 again, can accelerate the self-hardening resin sand that is sent into by sand mixer export 20 in the sealing bag 22, thereby can make the self-hardening resin sand obtain corresponding compactedness in sand box 23, the hardness of sand mould has been improved, through set up valve 14 on gas storage box 11 gas inlet 12, the circulation of accessible control compressed air, especially when can making sand mixer export add sand, open compressed air, can accelerate the speed that the self-hardening resin sand gets into in the sand mould, make the high-speed of self-hardening resin sand shoot into the sand box, improve the compactness of sand mould; the gas outlet 13 of the gas storage box 11 is designed into a slit structure, and is inclined at an angle alpha, so that sand in the center of a sand flow can fall down at an accelerated speed and can be shot into the sand box 23, and the sealing bag 22 is arranged below the structure, so that the molding sand can be prevented from splashing and falling to the outside of the sand box 23, and the environment-friendly effect is achieved. The utility model discloses an utilize compressed air, molding sand 21 can be under compressed air's drive to the assigned position in high acceleration directive sand box 23 to this makes molding sand 21 automatic form higher degree of compaction, has removed artifical supplementary tight real molding sand 21 from, has reduced artifical supplementary tight real intensity of labour, has avoided the disadvantage that shaking table made sand box 23 and mould 24 remove, can improve the precision of sand mould, and then guarantees the quality of foundry goods.

Claims

1. The utility model provides a self-hardening resin sand roller mill outlet structure which characterized in that: the edge periphery of sand mixer export is provided with the gas receiver, and the gas receiver includes gas inlet and gas outlet, and the sand box that the gas outlet of gas receiver set up downwards, the gas outlet periphery of gas receiver is fixed with the sealed bag upper shed, and the sealed bag end opening extends to in the sand box, is connected with compressed air on the gas inlet of gas receiver.

2. The outlet structure of a self-hardening resin sand mixer according to claim 1, wherein: the periphery of the gas outlet of the gas storage box is provided with a flange, the upper opening of the sealing bag is fixed on the flange, and the gas inlet of the gas storage box is provided with a valve.

3. The outlet structure of a self-hardening resin sand mixer according to claim 1, wherein: the gas outlet of the gas storage box is located on the inner side of the bottom of the gas storage box and inclines towards the inner lower side by an angle alpha, and alpha = 10-20 degrees.

4. The outlet structure of a self-hardening resin sand mixer according to claim 1, wherein: the gas outlet of the gas storage box is of a slit structure, and the width of the slit is 2-10 mm.