CN216828500U

CN216828500U - Green's foundry sand retrieves storage device

Info

Publication number: CN216828500U
Application number: CN202123021392.4U
Authority: CN
Inventors: 宁佐明; 宁楚亮; 李双江; 尹久斌
Original assignee: Yunnan Lingfeng Machinery Manufacturing Co ltd
Current assignee: Yunnan Lingfeng Machinery Manufacturing Co ltd
Priority date: 2021-12-03
Filing date: 2021-12-03
Publication date: 2022-06-28
Anticipated expiration: 2031-12-03

Abstract

The utility model discloses a green's foundry molding sand retrieves storage device, including the feed bin, classifying screen I, hoisting device, store the tower, feed bin upper portion is equipped with into the sand mouth and communicates and the bottom is equipped with out the sand mouth and communicates with classifying screen I with molding sand reducing mechanism intercommunication and bottom, I tail end of classifying screen is equipped with row cinder notch, row's sand mouth I, row's cinder notch below is equipped with the sediment frame, row's sand mouth I still is connected with classifying screen II, II tail end lower parts of classifying screen are equipped with row's powder mouth and upper portion are equipped with row's sand mouth II, II below being equipped with storage sand box in row's sand mouth, store vertical locating one side of tower, hoisting device's riser extends to in the storage sand box and row's sand pipe stretches into and stores the tower, store the tower bottom still is equipped with the valve of blowing, the inlet tube intercommunication of blowing valve bottom and defeated sand auger. The utility model discloses a set up the molding sand after the two-stage classifying screen is smashed in order to screen, realize the edulcoration of molding sand, abandon the powder, qualified molding sand is stored and is used for standby in the storage tower, has simple structure, retrieves stable in quality, little, the low characteristics of energy consumption of dust pollution.

Description

Green's foundry sand retrieves storage device

Technical Field

The utility model belongs to the technical field of pressure equipment, concretely relates to storage device is retrieved to green casting molding sand that simple structure, recovery steady quality, dust pollution are little, the energy consumption is low.

Background

The molding sand is a material used for molding in casting, and is generally formed by mixing molding materials such as raw sand for casting, a molding sand binder, an auxiliary additive and the like according to a certain proportion. The casting has an important position in the equipment manufacturing industry due to the advantages of high production efficiency and material utilization rate, good casting performance, easy realization of complex profiles and the like. Currently, the production of castings in our country is the second place in the world, with sand casting accounting for the vast majority (about 80%) of them. And because the molding sand produces about 1.2t of old and useless sand every 1t foundry goods of production, consequently can produce huge casting old and useless sand each year, not only occupy a large amount of places to stack, cause the waste of molding sand resource, and stack at will and can cause the raise dust polluted air, wherein harmful binder still can pollute the water source through rainwater erosion moreover, so must carry out effectual treatment to casting old and useless sand. In the treatment of casting waste sand, an effective and feasible method is to treat the waste sand and then recycle the waste sand as molding sand. However, since the function of the molding sand in the casting production is very important, the casting waste products caused by poor quality of the molding sand account for about 30 to 50 percent of the total casting waste products. Therefore, how to improve the treatment quality of the waste foundry sand and effectively reduce the dust pollution in the treatment process, thereby improving the stability of the quality of the regenerated molding sand and having great practical significance for realizing green sustainable development of the foundry industry.

The casting waste molding sand has complex components and various types, so in order to improve the recycling efficiency of the waste molding sand, at present, part of the casting waste molding sand is regenerated by a traditional mechanical method, and the other part of the casting waste molding sand such as sodium silicate sand, resin sand and the like can be recycled only by adopting a thermal regeneration process. However, no matter the molding sand regenerated by a mechanical method or a thermal method is adopted, because the existence of the binder and the additive and the mixture of iron impurities in the casting can cause the molding sand to have different thicknesses, and the molding sand partially powdered also exists, so the quality of the molding sand can be ensured only by removing the binder and the additive, and the quality of the casting is ensured. Among the prior art, to large granule molding sand and iron impurity, generally adopt filter screen and magnetism gyro wheel to get rid of, the molding sand after the processing can satisfy the casting requirement basically, but owing to wherein the existence of powdered molding sand, not only can influence the mobility when the molding sand is moulded, gas permeability when also can influence the molding sand casting to can lead to the casting qualification rate to be difficult to improve. Therefore, a method of screening for multiple times or spiral classification is adopted, manual screening is generally adopted for multiple screening, labor intensity is high, the environment of dust emission can damage the health of workers, the spiral classification is fine, the obtained molding sand with different particle sizes can meet different use requirements, the energy consumption during spiral classification is high, a dustproof mechanism is complex, and the method can only be applied to regeneration of waste sand with high requirements. In addition, the pretreatment such as waste sand among the prior art is smashed often takes off the festival with middle screening and later stage's storage, forms respective independent flow, not only occupies a large amount of places, and stacks in the open air and easily pollute, and the container storage after the linking transport inconvenient, can reduce the efficiency of retrieving and increase the risk of leaking.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a storage device is retrieved to green casting molding sand simple structure, recovery steady quality, dust pollution are little, the energy consumption is low.

The utility model discloses these realize: including feed bin, classifying screen I, hoisting device, storage tower, the upper portion of feed bin is provided with into the sand mouth and communicates with molding sand reducing mechanism, the bottom of feed bin is provided with out the sand mouth and communicates with the feed end of the inclosed classifying screen I in bottom, the tail end of classifying screen I is provided with row cinder notch, row's sand mouth I, row's cinder notch below is provided with the sediment frame, row's sand mouth I still is connected with inclosed classifying screen II, the tail end lower part of classifying screen II is provided with row's powder mouth and upper portion is provided with row's sand mouth II, the below of row's sand mouth II is provided with the storage sand box, the vertical one side that sets up in the feed bin of storage tower, hoisting device's riser extends to in the storage sand case and row's sand pipe stretches into the storage tower, the bottom of storage tower still is provided with the valve of blowing, the bottom of blowing valve communicates with the inlet tube of defeated sand auger.

The utility model has the advantages that:

1. the utility model discloses a set up the two-stage and link up and inclosed classifying screen to the molding sand after smashing is smashed in the screening, not only realizes the edulcoration of molding sand, abandons the powder, thereby effectively improves the stability of quality of retrieving back molding sand, and inclosed classifying screen can also avoid the pollution that the dust leaked and caused among the screening process, and the screening of classifying screen compares spiral hierarchical power consumption lower, can also realize inclosed dustproof through simple and reliable structure.

2. The utility model discloses a set up the feed bin before the classifying screen and keep in the elementary molding sand after the pretreatment such as smashing, then set up the storage tower of storing qualified molding sand behind the classifying screen, and promote the molding sand after will sieving through hoisting device and store in the tower, thereby form continuous keeping in, sieve and store and link up, it is efficient not only to compare artifical fractional screening, pollute little, but also can in time save the elementary molding sand of pretreatment, and the regenerated molding sand of storage is for use, the occupation in a large amount of places has been avoided, can also effectively avoid dust pollution.

3. The utility model discloses set up from II lateral direction hoisting device's of classifying screen magnetic sheet or magnetism gyro wheel that inclines to decurrent in the below of sand discharge opening II, iron that is mingled with in getting rid of screening back molding sand under the condition that can not have energy consumption or low energy consumption to can further improve the quality of retrieving the molding sand, effectively guarantee cast qualification rate.

To sum up, the utility model has the characteristics of simple structure, recovery stable quality, little dust pollution, low energy consumption.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a right side view of FIG. 1;

FIG. 4 is a schematic view showing a first structure of the sand storage box of FIG. 1;

FIG. 5 is a schematic view of the second sand storage box of FIG. 1;

in the figure: 1-a storage bin, 2-a grading sieve I, 2A-a slag discharge port, 2B-a frame, 2C-a spring, 2D-a vibration motor, 2E-a slag guide channel, 3-a lifting device, 4-a storage tower, 4A-a sand discharge valve, 5-a slag frame, 6-a grading sieve II, 6A-a powder discharge port, 6B-a sand discharge port II, 7-a sand storage box, 8-a sand conveying auger, 9-a magnetic plate, 10-a guide plate and 11-a dust cover.

Detailed Description

The present invention is further described with reference to the following drawings and examples, but the present invention is not limited thereto in any way, and any modification or improvement based on the teaching of the present invention is within the protection scope of the present invention.

As shown in figures 1, 2 and 3, the utility model comprises a storage bin 1, a grading sieve I2, a lifting device 3 and a storage tower 4, wherein the upper part of the storage bin 1 is provided with a sand inlet and is communicated with a molding sand smashing device, the bottom of the storage bin 1 is provided with a sand outlet and is communicated with the feeding end of the grading sieve I2 with a sealed bottom, the tail end of the grading sieve I2 is provided with a slag outlet 2A and a sand outlet I, a slag frame 5 is arranged below the slag outlet 2A, the sand outlet I is also connected with a sealed grading sieve II 6, the lower part of the tail end of the grading sieve II 6 is provided with a powder outlet 6A and the upper part is provided with a sand outlet II 6B, a sand storage box 7 is arranged below the sand outlet II 6B, the storage tower 4 is vertically arranged at one side of the storage bin 1, a lifting pipe of the lifting device 3 extends into the sand storage box 7 and a sand discharge pipe extends into the storage tower 4, the bottom of the storage tower 4 is also provided with a sand discharge valve 4A, the bottom end of the sand discharge valve 4A is communicated with an inlet pipe of the sand conveying auger 8.

As shown in fig. 4, a magnetic plate 9 or a magnetic roller inclined downward from one side of the classifying screen ii 6 to the lifting pipe of the lifting device 3 is provided below the sand discharge port ii 6B in the sand storage box 7.

As shown in fig. 5, at least two layers of magnetic plates 9 are arranged in the sand storage box 7 from top to bottom, and guide plates 10 with opposite inclination directions and staggered are arranged between the two layers of magnetic plates 9.

Two side walls of the sand storage box 7 are respectively and correspondingly provided with an inclined downward slot, and the magnetic plate 9 and/or the guide plate 10 are inserted into the slots of the sand storage box 7.

The bottom of classifying screen I2 is provided with frame 2B, be provided with spring 2C between classifying screen I2 and the frame 2B, be provided with vibrating motor 2D on one lateral wall of classifying screen I2.

The rear end of the classifying screen I2 is fixedly connected with the front end of the classifying screen II 6, and a detachable top cover is arranged at the upper end of the classifying screen I2 and/or the upper end of the classifying screen II 6.

The rear end of classifying screen I2 is provided with and is not less than the screen cloth wire side and leads sediment passageway 2E to classifying screen II 6 slope downwardly extending, row's cinder notch 2A sets up in leading one side of sediment passageway 2E.

A dust cover 11 is sleeved between the sand discharge port II 6B and the sand storage box 7, and a through hole capable of penetrating through a lifting pipe of the lifting device 3 is formed in the dust cover 11.

The lifting device 3 comprises a motor and a sand pump, the motor and the sand pump are fixedly arranged on the inner side wall of the storage tower 4, and an inlet of the sand pump is connected with the lifting pipe.

The utility model discloses theory of operation and working process:

as shown in fig. 1 to 4, when the sand grinder is used, a molding sand blank is input into the grinder to be ground, the molding sand blank is lifted into a bin 1 to be temporarily stored after being primarily filtered, after a certain amount of coarse sand is stored in the bin 1, a material valve at the bottom of the bin 1 is opened, the coarse sand is placed on a screen I of a classifying screen I2, the classifying screen I2 vibrates back and forth under the driving of a vibration motor 2D, the coarse sand on the screen I is horizontally thrown forwards, small sand grains fall below the screen I and continue to move forwards, large-diameter impurities and sand blocks which are not completely ground move forwards on the screen I, the small sand grains fall onto a screen II of a classifying screen II 6 when moving to the tail end of the classifying screen I2, and the large-diameter impurities and the sand blocks which are not completely ground fall into a slag frame 5 from a slag discharge port 2A at one side when moving to the tail end of the classifying screen I2; the classifying screen II 6 is driven by the classifying screen I2 to vibrate back and forth, small sand grains falling on the screen II continue to move forwards in a horizontal throwing manner, the powdered sand grains fall under the screen II and move forwards, sand grains larger than the diameter of a screen hole of the screen II move forwards on the screen II, when the powdered sand grains move to the tail end of the classifying screen II 6, the powdered sand grains fall into the powder storage box at the lower part from the powder discharge port 6A at one side, and when the sand grains larger than the diameter of the screen hole of the screen II move to the tail end of the classifying screen II 6, the powdered sand grains fall into the sand storage box 7 from the sand discharge port II 6B to serve as regenerated molding sand, and the quality of the regenerated molding sand is effectively improved through impurity removal and powder discard; the regenerated molding sand falls onto the magnetic plate 9 from the sand discharge port II 6B, and iron impurities in the regenerated molding sand are adsorbed on the surface of the regenerated molding sand by the magnetic plate 9, so that the iron impurities in the regenerated molding sand can be filtered; the regenerated molding sand filtered to remove iron impurities falls into the sand storage box 7, operates with a sand pump of the lifting device 3, and is lifted into the storage tower 4 through the lifting pipe for storage; when the regenerated molding sand in the storage tower 4 is needed, the sand discharge valve 4A at the bottom of the storage tower 4 is opened, the sand conveying auger 8 is started, and the regenerated molding sand in the storage tower 4 is conveyed to a transfer trolley or directly conveyed to a molding site for use.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A green and environment-friendly foundry molding sand recycling and storing device comprises a storage bin (1), a classifying screen I (2), a lifting device (3) and a storage tower (4), wherein a sand inlet is formed in the upper part of the storage bin (1) and is communicated with a molding sand crushing device, a sand outlet is formed in the bottom of the storage bin (1) and is communicated with the feeding end of the classifying screen I (2) with a sealed bottom, a slag discharge port (2A) and a sand discharge port I are formed in the tail end of the classifying screen I (2), a slag frame (5) is arranged below the slag discharge port (2A), the green and environment-friendly foundry molding sand recycling and storing device is characterized in that the sand discharge port I is also connected with the sealed classifying screen II (6), a powder discharge port (6A) is formed in the lower part of the tail end of the classifying screen II (6) and a sand discharge port II (6B) is formed in the upper part of the tail end of the classifying screen II (6), a sand storage box (7) is arranged below the sand discharge port II (6B), and the storage tower (4) is vertically arranged on one side of the storage bin (1), the lifting pipe of the lifting device (3) extends into the sand storage box (7) and the sand discharge pipe extends into the storage tower (4), the bottom of the storage tower (4) is further provided with a sand discharge valve (4A), and the bottom end of the sand discharge valve (4A) is communicated with an inlet pipe of the sand conveying auger (8).

2. The green-environment-friendly foundry sand reclamation and storage device as defined in claim 1, wherein the sand storage box (7) is provided with a magnetic plate (9) or a magnetic roller which is inclined downward from one side of the classifying screen ii (6) to a lifting pipe of the lifting device (3) below the sand discharge port ii (6B).

3. The green environmental-friendly foundry sand reclamation and storage device as defined in claim 2, wherein at least two magnetic plates (9) are arranged in the sand storage box (7) from top to bottom and guide plates (10) having opposite inclination directions and being staggered are arranged between the two magnetic plates (9).

4. The green-environment-friendly foundry sand reclamation and storage device as defined in claim 3, wherein the two side walls of the sand storage box (7) are respectively provided with downwardly inclined slots, and the magnetic plates (9) and/or the guide plates (10) are inserted into the slots of the sand storage box (7).

5. The green and environment-friendly foundry sand recycling and storing device as defined in claim 1, 2, 3 or 4, wherein a frame (2B) is arranged at the bottom of the classifying screen I (2), a spring (2C) is arranged between the classifying screen I (2) and the frame (2B), and a vibrating motor (2D) is arranged on one side wall of the classifying screen I (2).

6. The environment-friendly foundry sand recycling and storing device as claimed in claim 5, wherein the rear end of the classifying screen I (2) is fixedly connected with the front end of the classifying screen II (6), and a detachable top cover is arranged at the upper end of the classifying screen I (2) and/or the classifying screen II (6).

7. The environment-friendly foundry sand recycling and storing device as defined in claim 5, wherein the rear end of the classifying screen I (2) is provided with a slag guiding passage (2E) which is not lower than the mesh surface of the screen and extends obliquely downward toward the classifying screen II (6), and the slag discharging port (2A) is arranged on one side of the slag guiding passage (2E).

8. The green and environment-friendly foundry sand recycling and storing device as defined in claim 5, wherein a dust cover (11) is sleeved between the sand discharge port II (6B) and the sand storage box (7), and the dust cover (11) is provided with a through hole which can pass through a riser of the lifting device (3).

9. The green and environment-friendly foundry sand recycling and storing device as defined in claim 5, wherein the lifting device (3) comprises a motor and a sand pump, the motor and the sand pump are fixedly arranged on the inner side wall of the storage tower (4), and the inlet of the sand pump is connected with the lifting pipe.