CN212238457U

CN212238457U - Vacuum sand sucking device for production of precoated sand shell

Info

Publication number: CN212238457U
Application number: CN202021822409.9U
Authority: CN
Inventors: 陈思春
Original assignee: Anhui Foundry Machinery Intelligence Co ltd
Current assignee: Anhui Foundry Machinery Intelligence Co ltd
Priority date: 2020-08-27
Filing date: 2020-08-27
Publication date: 2020-12-29
Anticipated expiration: 2030-08-27

Abstract

The invention discloses a vacuum sand suction device for production of a precoated sand shell, which comprises a sand hopper, wherein a cover plate is fixed at the upper end of the sand hopper, the sand hopper and the cover plate form a vacuum box, more than one fixing flange is fixed on the outer wall of the sand hopper, a framework is respectively fixed on the fixing flanges, the framework extends into the sand hopper, a dust removal cloth bag is fixedly sleeved on the framework, the fixing flanges are respectively fixed with a transition pipe, the transition pipes are respectively communicated with the dust removal cloth bag, one end of each transition pipe is in a closed state, the other end of each transition pipe is fixedly connected with one interface of an automatic three-way ball valve, the other interface of the automatic three-way ball valve is fixed with a connecting flange, the connecting flange is connected with a vacuum pump through a vacuum pipeline, the rest interfaces of the automatic three-way ball valve are communicated with the atmosphere, a sand suction pipeline is fixed on the outer wall of the sand hopper, the sand suction pipeline is communicated with the sand hopper. This a vacuum sand suction device for production of tectorial membrane sand system shell has liberated the manpower, has improved operational environment.

Description

Vacuum sand sucking device for production of precoated sand shell

Technical Field

The invention relates to a vacuum device, in particular to a vacuum sand suction device for production of a precoated sand shell.

Background

The existing precoated sand shell manufacturing production is also the traditional manual operation, and when the precoated sand falls into a sand frame, the mould is completely buried. The precoated sand on the surface of the mold is rapidly solidified under the action of high temperature to form a layer of hard shell, meanwhile, the temperature of the mold is rapidly reduced in the process of crusting, and the precoated sand far away from the surface of the mold cannot be crusted to form floating sand because sufficient heat cannot be obtained. In the sand shell forming process, a worker holds a compressed air gun to blow off redundant floating sand on the sand shell. The operation causes fine sand to fly, the dust is large, and the working environment is severe.

Disclosure of Invention

The invention aims to provide a vacuum sand suction device for precoated sand shell manufacturing production, which changes a sand blowing process into a sand suction process, frees manpower and improves working environment.

In order to achieve the purpose, the invention provides the following technical scheme:

a vacuum sand suction device for production of precoated sand shells comprises a sand hopper, a cover plate is fixed at the upper end of the sand hopper, the sand hopper and the cover plate form a vacuum box, more than one fixing flange is fixed on the outer wall of the sand hopper, a framework is respectively fixed on the fixing flanges, the framework extends into the sand hopper, a dust removal cloth bag is fixedly sleeved on the framework, the fixing flanges are respectively fixed with a transition pipe, the transition pipes are respectively communicated with the dust removal cloth bag, one end of each transition pipe is in a closed state, the other end of each transition pipe is fixedly connected with a connector of an automatic three-way ball valve, the other connector of the automatic three-way ball valve is fixed with a connecting flange, the connecting flange is connected with a vacuum pump through a vacuum pipeline, the rest connectors of the automatic three-way ball valve are communicated with the atmosphere, an electromagnetic valve is installed on the automatic three-way ball valve, a sand suction pipeline is fixed on the outer wall of the, the sand suction pipeline is communicated with the sand hopper, a shakeout pipeline is fixed at the lower end of the sand hopper, and the shakeout pipeline is communicated with the sand hopper.

Preferably, sealing gaskets are arranged between the cover plate and the sand hopper, between the fixing flange and the sand hopper, between the transition pipe and the fixing flange, and between the connecting flange and the vacuum pipeline.

Preferably, the transition pipe is fixedly connected with the automatic three-way ball valve through an external thread joint.

Preferably, a control valve is installed on the shakeout pipeline.

Preferably, the sand suction pipe is connected with the sand suction frame.

Preferably, the lower end of the sand suction pipeline is connected with a welding elbow through a pagoda joint, and the welding elbow is connected with the sand suction frame.

Preferably, the sand suction frame comprises two symmetrically arranged straight steel pipes I and two symmetrically arranged straight steel pipes II, the straight steel pipes I are perpendicular to the straight steel pipes II, the straight steel pipes I are connected with the straight steel pipes II through bent steel pipes respectively, all the straight steel pipes I, the straight steel pipes II and the bent steel pipes enclose a frame shape, the welding elbow is communicated with one of the straight steel pipes I, and more than one copper pipe is fixed at one end of each of the straight steel pipes I and the straight steel pipes II.

Preferably, the sand suction frame further comprises a first connecting steel pipe fixed at the lower ends of the first straight steel pipe and the second straight steel pipe, a first connecting steel pipe at the lower end of the first straight steel pipe connected with the welding elbow is respectively communicated with a first sand suction steel pipe, the second straight steel pipe and the first connecting steel pipe at the lower end of the first straight steel pipe are respectively communicated with the second sand suction steel pipe, a sand suction steel pipe II below the straight steel pipe II is respectively communicated with a sand suction steel pipe III through a connecting steel pipe II, two opposite ends of the sand suction steel pipe are respectively fixed with a transverse steel pipe, the lower end of the transverse steel pipe is fixed with the vertical steel pipe, sealing plates are respectively fixed at two ends of the sand suction steel pipe one, two ends of the sand suction steel pipe two, three ends of the sand suction steel pipe three and one end of the transverse steel pipe, and the sealing plate, the copper pipe, the straight steel pipe I, the straight steel pipe II, the sand suction steel pipe I, the sand suction steel pipe II and the sand suction steel pipe III are respectively provided with sand suction holes with different sizes.

Compared with the prior art, the invention has the beneficial effects that:

1) the sand blowing process is changed into the sand sucking process, the sand hopper is formed into the vacuum box, the vacuum box is connected with the vacuum pump, smooth sand sucking can be realized, when the vacuum pump is disconnected, the pressure in the vacuum box is instantly released, and the vacuum box can not bear the negative pressure constantly.

2) The special profiling design of the sand suction frame and the design of multiple sand suction holes adapt to the layout of the sand suction holes and the size of the holes of the airflow, so that floating sand can be cleaned synchronously and quickly at multiple points, and the floating sand is prevented from being softened and even crusted.

Drawings

FIG. 1 is a schematic structural diagram of a vacuum sand suction device for precoated sand shell production in an embodiment of the invention;

FIG. 2 is a front view of a vacuum box in an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;

FIG. 4 is a schematic structural view of a sand suction frame according to an embodiment of the present invention;

in the figure, 1, a sand hopper, 2, a cover plate, 3, a fixing flange, 4, a framework, 5, a dust removal cloth bag, 6, a transition pipe, 7, an automatic three-way ball valve, 8, an external thread joint, 9, a connecting flange, 10, a welding elbow, 11, an electromagnetic valve, 12, a sand suction pipeline, 13, a sand suction frame, 1301, a first straight steel pipe, 1302, a second straight steel pipe, 1303, a bent steel pipe, 1304, a copper pipe, 1305, a first connecting steel pipe, 1306, a first sand suction steel pipe, 1307, a second sand suction steel pipe, 1308, a second connecting steel pipe, 1309, a third sand suction steel pipe, 1310, a transverse steel pipe, 1311, a vertical steel pipe, 1312, a sealing plate, 1313, a sand suction hole, 14, a sand shakeout pipeline, 15, a sealing gasket, 16 and a pagoda joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a vacuum sand suction device for precoated sand shell production includes a sand hopper 1, a cover plate 2 fixed on the upper end of the sand hopper 1, and a vacuum box formed by the sand hopper 1 and the cover plate 2. More than one fixing flange 3 is fixed on the outer wall of the sand hopper 1, a framework 4 is fixed on the fixing flange 3 respectively, the framework 4 extends into the sand hopper 1, and a dust removal cloth bag 5 is sleeved and fixed on the framework 4. The fixed flanges 3 are respectively fixed with the transition pipes 6, so that the transition pipes 6 are respectively communicated with the dust removal cloth bags 5. One end of the transition pipe 6 is in a closed state, the other end of the transition pipe 6 is fixedly connected with one connector of the automatic three-way ball valve 7, and the transition pipe 6 is fixedly connected with the automatic three-way ball valve 7 through the external thread connector 8. The other interface of the automatic three-way ball valve 7 is fixed with a connecting flange 9, and the connecting flange 9 is connected with a vacuum pump through a vacuum pipeline. The residual interfaces of the automatic three-way ball valve 7 are open and communicated with air, an electromagnetic valve 11 is arranged on the automatic three-way ball valve 7, and the electromagnetic valve 11 is used for controlling the automatic three-way ball valve 7 to work.

The outer wall of the sand hopper 1 is fixedly provided with a sand suction pipeline 12, the sand suction pipeline 12 is communicated with the sand hopper 1, and the sand suction pipeline 12 is connected with a sand suction frame 13. The lower end of the sand hopper 1 is fixed with a shakeout pipeline 14, the shakeout pipeline 14 is communicated with the sand hopper 1, and a control valve which can be an electromagnetic valve is installed on the shakeout pipeline 14. By providing the shakeout passage 14, the surface of the mold can be conveniently coated with sand. Sealing gaskets 15 are arranged between the cover plate 2 and the sand hopper 1, between the fixing flange 3 and the sand hopper 1, between the transition pipe 6 and the fixing flange 3 and between the connecting flange 9 and the vacuum pipeline, and the sealing gaskets 15 can enhance the sealing performance of the vacuum box.

The lower end of the sand suction pipeline 12 is connected with the welding elbow 10 through a pagoda joint 16, and the welding elbow 10 is connected with the sand suction frame 13. The sand absorption frame 13 comprises two first straight steel pipes 1301 symmetrically arranged and two second straight steel pipes 1302 symmetrically arranged, the first straight steel pipes 1301 are perpendicular to the second straight steel pipes 1302, the first straight steel pipes 1301 are connected with the second straight steel pipes 1302 through bent steel pipes 1303, and all the first straight steel pipes 1301, the second straight steel pipes 1302 and the bent steel pipes 1303 are encircled to form a frame. The welded elbow 10 is communicated with one straight steel pipe 1301, more than one copper pipe 1304 is respectively fixed at one end of each of the straight steel pipe 1301 and the straight steel pipe 1302, and the copper pipes 1304 are fixed on the inner wall of the sand absorption frame. The sand suction frame 13 further comprises more than two first connecting steel pipes 1305 which are respectively fixed at the lower ends of the first straight steel pipes 1301 and the second straight steel pipes 1302, the first connecting steel pipes 1305 at the lower ends of the first straight steel pipes 1301 connected with the welded elbow 10 are respectively communicated with the first sand suction steel pipes 1306, the first sand suction steel pipes 1306 and the first straight steel pipes 1301 are vertically arranged, the second straight steel pipes 1302 and the first connecting steel pipes 1305 at the lower ends of the first straight steel pipes 1301 are respectively communicated with the second sand suction steel pipes 1307, the second sand suction steel pipes 1307 and the first straight steel pipes 1301 and the second straight steel pipes 1302 corresponding to the upper portions of the second sand suction steel pipes 1307 are respectively arranged in parallel, and the second sand suction steel pipes 1307 below the second straight steel pipes 1302 are respectively communicated with. And a transverse steel pipe 1310 is respectively fixed at one end of the sand suction steel pipe II 1307, the transverse steel pipe 1310 is perpendicular to the straight steel pipe II 1302, and the lower end of the transverse steel pipe 1310 is fixed with the vertical steel pipe 1311. Sealing plates 1312 are respectively fixed at two ends of the first sand suction steel pipe 1306, two ends of the second sand suction steel pipe 1307, two ends of the third sand suction steel pipe 1309 and one end of the transverse steel pipe 1310, and sand suction holes 1313 with different sizes are respectively arranged on the sealing plates 1312, the copper pipe 1304, the first straight steel pipe 1301, the second straight steel pipe 1302, the first sand suction steel pipe 1306, the second sand suction steel pipe 1307 and the third sand suction steel pipe 1309.

The working principle is as follows: firstly, the shakeout pipeline 14 is closed through the control valve, so that the vacuum pump is in a normally open state, the automatic three-way ball valve 7 is in a normally closed state, so that the vacuum pipeline is closed, and the vacuum box is communicated with the atmosphere through one interface of the automatic three-way ball valve 7. The electromagnetic valve 11 works to close the interface of the automatic three-way ball valve 7 communicated with the atmosphere and open the interface communicated with the vacuum tube, so that the vacuum pump is communicated with the vacuum box through the vacuum pipeline and the transition tube 6, and the air in the vacuum box is instantly discharged through the dust removal cloth bag 5, the transition tube 6 and the automatic three-way ball valve 7 to form negative pressure. The sand suction pipeline 12 is connected to the sand suction frame 13, floating sand enters the vacuum box through the sand suction holes 1313, the sand suction frame 13 and the sand suction pipeline 12 under the action of negative pressure, and the sand falls to the bottom of the sand hopper 1 under the action of gravity, so that the sand suction function is realized. Wherein, inhale the special profile modeling design of sand frame 13, inhale sand hole 1313 design more, the design of the sand hole 1313 overall arrangement and the hole size of inhaling of adaptation air current for float sand can the multiple spot be synchronous and quick cleared up, avoid floating sand by softening, the crust even.

After sand suction is finished, the electromagnetic valve 11 works to enable the automatic three-way ball valve to close the connection between the vacuum box and the vacuum pump and simultaneously connect the vacuum box and the atmosphere, and the vacuum box instantly releases pressure. Air enters from the automatic three-way ball valve 7, and forms back blowing on the dust removal cloth bag 5 after passing through the external thread joint 8 and the transition pipe 6, so as to achieve the effect of cleaning the dust removal cloth bag.

The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the present invention as defined in the accompanying claims.

Claims

1. The utility model provides a sand device is inhaled in vacuum for production of tectorial membrane sand system shell which characterized in that: the automatic three-way ball valve comprises a sand hopper, a cover plate is fixed at the upper end of the sand hopper, the sand hopper and the cover plate form a vacuum box, more than one fixing flange is fixed on the outer wall of the sand hopper, a framework is respectively fixed on the fixing flanges, the framework extends into the sand hopper, a dust removal cloth bag is fixedly sleeved on the framework, the fixing flanges are respectively fixed with a transition pipe, the transition pipe is respectively communicated with the dust removal cloth bag, one end of the transition pipe is in a closed state, the other end of the transition pipe is fixedly connected with one interface of the automatic three-way ball valve, the other interface of the automatic three-way ball valve is fixed with a connecting flange, the connecting flange is connected with a vacuum pump through a vacuum pipeline, the rest interfaces of the automatic three-way ball valve are communicated with the atmosphere, an electromagnetic valve is installed on the automatic three-way ball valve, a sand suction pipeline is fixed on the outer wall of the, and a shakeout pipeline is fixed at the lower end of the sand hopper and is communicated with the sand hopper.

2. The vacuum sand suction device for the production of the precoated sand shell according to claim 1, characterized in that: sealing gaskets are arranged between the cover plate and the sand hopper, between the fixed flange and the sand hopper, between the transition pipe and the fixed flange, and between the connecting flange and the vacuum pipeline.

3. The vacuum sand suction device for the production of the precoated sand shell according to claim 1, characterized in that: the transition pipe is fixedly connected with the automatic three-way ball valve through an external thread joint.

4. The vacuum sand suction device for the production of the precoated sand shell according to claim 1, characterized in that: and the shakeout pipeline is provided with a control valve.

5. The vacuum sand suction device for the production of the precoated sand shell according to claim 1, characterized in that: and the sand suction pipeline is connected with the sand suction frame.

6. The vacuum sand suction device for the production of the precoated sand shell according to claim 5, characterized in that: the lower end of the sand suction pipeline is connected with a welding elbow through a pagoda joint, and the welding elbow is connected with the sand suction frame.

7. The vacuum sand suction device for the production of the precoated sand shell according to claim 6, characterized in that: the sand suction frame comprises two first straight steel pipes and two second straight steel pipes, the first straight steel pipes and the second straight steel pipes are symmetrically arranged, the first straight steel pipes and the second straight steel pipes are perpendicularly arranged, the first straight steel pipes are connected with the second straight steel pipes through bent steel pipes respectively, all the first straight steel pipes, the second straight steel pipes and the bent steel pipes are enclosed to form a frame shape, a welding elbow is communicated with one first straight steel pipe, and more than one copper pipe is fixed at one end of each of the first straight steel pipes and the second straight steel pipes.

8. The vacuum sand suction device for the production of the precoated sand shell according to claim 7, characterized in that: the sand absorption frame also comprises a first connecting steel pipe fixed at the lower ends of the first straight steel pipe and the second straight steel pipe, the first connecting steel pipe at the lower end of the first straight steel pipe connected with the welding elbow is respectively communicated with the first sand absorption steel pipe, the second straight steel pipe and the first connecting steel pipe at the lower end of the first straight steel pipe are respectively communicated with the second sand suction steel pipe, a sand suction steel pipe II below the straight steel pipe II is respectively communicated with a sand suction steel pipe III through a connecting steel pipe II, two opposite ends of the sand suction steel pipe are respectively fixed with a transverse steel pipe, the lower end of the transverse steel pipe is fixed with the vertical steel pipe, sealing plates are respectively fixed at two ends of the sand suction steel pipe one, two ends of the sand suction steel pipe two, three ends of the sand suction steel pipe three and one end of the transverse steel pipe, and the sealing plate, the copper pipe, the straight steel pipe I, the straight steel pipe II, the sand suction steel pipe I, the sand suction steel pipe II and the sand suction steel pipe III are respectively provided with sand suction holes with different sizes.