CN212525903U

CN212525903U - Sand recovery system

Info

Publication number: CN212525903U
Application number: CN202020869621.4U
Authority: CN
Inventors: 袁旭鹏; 刘文浩; 张东栓; 田学智
Original assignee: Kocel Intelligent Foundry Industry Innovation Center Co Ltd
Current assignee: Kocel Intelligent Machinery Ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2021-02-12
Anticipated expiration: 2030-05-22

Abstract

The utility model relates to a sand recovery system. The sand reclamation system includes: a collecting mechanism and a screening mechanism; the collecting mechanism comprises a conveyor and a sand hopper, an inlet of the conveyor is connected with the sand cleaning station, and the sand hopper is connected with an outlet of the conveyor; screening mechanism includes the reciprocating sieve structure and divides the sand fill, the entry intercommunication of reciprocating sieve structure the sand fill for screen qualified sand and non-qualified sand, divide the sand fill with the export intercommunication of reciprocating sieve structure is used for holding qualified sand and non-qualified sand. The sand recovery system can effectively reduce the sand recovery cost.

Description

Sand recovery system

Technical Field

The utility model relates to a sand processing technology field especially relates to a sand recovery system.

Background

At present, sand such as silica sand or ceramsite sand is mostly used in model production workshop to manufacture sand coreAfter the sand core is solidified, the floating sand around the sand core or on the sand core is not recycled, so that the waste of raw materials is caused, and the cost is increased. Taking 3D printing as an example, the work box after printing is transported to a sand cleaning station, the ceramsite sand in the work box falls into a sand hopper below the sand cleaning station, is transported to a hot method sand warehouse in a pneumatic sending tank mode, is burned by a hot method regeneration device to generate regenerated sand, and the purpose of recycling is achieved. The required natural gas consumption is about 27m by using a thermal regeneration device³H, which increases the cost of production.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is necessary to provide a sand reclamation system that can effectively reduce the sand reclamation cost, in order to solve the problem of high reclamation cost of the sand for the 3D printer.

A sand reclamation system, said sand reclamation system comprising: a collecting mechanism and a screening mechanism; the collecting mechanism comprises a conveyor and a sand hopper, an inlet of the conveyor is connected with the sand cleaning station, and the sand hopper is connected with an outlet of the conveyor; screening mechanism includes the reciprocating sieve structure and divides the sand fill, the entry intercommunication of reciprocating sieve structure the sand fill for screen qualified sand and non-qualified sand, divide the sand fill with the export intercommunication of reciprocating sieve structure is used for holding qualified sand and non-qualified sand.

In one embodiment, the vibrating screen structure comprises a body, a three-stage screen and a vibrating piece, wherein the body is connected with the sand hopper, the body is provided with an inner cavity, the three-stage screen is contained in the inner cavity of the body, and the vibrating piece is arranged on the body.

In one embodiment, the vibrating piece is arranged at the connecting position of the body and the sand hopper.

In one embodiment, the three-stage screen is a 50-mesh screen, a 100-mesh screen and a 140-mesh screen which are sequentially arranged at intervals along the vertical direction.

In one embodiment, the body is provided with a plurality of sand conveying ports, and each sand conveying port is arranged corresponding to each grade of screen.

In one embodiment, the sand conveying port formed in the upper space of the 50-mesh screen and the sand conveying port formed in the lower space of the 140-mesh screen are used for conveying non-qualified sand, and the sand conveying port formed in the upper space of the 100-mesh screen and the sand conveying port formed in the upper space of the 140-mesh screen are used for conveying qualified sand.

In one embodiment, the sand separating hopper comprises a qualified sand hopper and a non-qualified sand hopper, the qualified sand hopper is communicated with the sand conveying port for conveying qualified sand, and the non-qualified sand hopper is communicated with the sand conveying port for conveying non-qualified sand.

In one embodiment, the sand recovery system further comprises a conveying mechanism, the conveying mechanism comprises a sending tank and a conveying pipe which are connected with each other, the sending tank is communicated with the sand separating hopper, and the conveying pipe is used for conveying qualified sand and non-qualified sand in the sending tank to corresponding equipment respectively.

In one embodiment, the sand recovery system further comprises a recycled sand warehouse, and the recycled sand warehouse is connected with a conveying pipe for conveying qualified sand.

In one embodiment, the sand recovery system further comprises a hot sand warehouse connected with a conveying pipe for conveying non-qualified sand

Above-mentioned sand recovery system collects the sand hopper through the conveyer with the sand at sand removal station, further sieves the sand that the sand hopper was collected through the reciprocating sieve structure of being connected with the sand hopper and acquires qualified sand and non-qualified sand to contain qualified sand and non-qualified sand through dividing the sand hopper, thereby realize sieving the back and do the processing again with the sand, thereby effectively improve sand recovery used repeatedly's efficiency, reduce sand heat method regeneration volume, effectively reduce sand recovery cost correspondingly.

Drawings

Fig. 1 is a schematic structural view of a sand reclamation system according to an embodiment.

Fig. 2 is a schematic structural diagram of a vibrating screen structure according to an embodiment.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "left," "right," "top," "bottom," "top," and the like are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, a sand reclamation system, the sand reclamation system comprising: a collecting mechanism and a screening mechanism; the collecting mechanism comprises a conveyor and a sand hopper, an inlet of the conveyor is connected with the sand cleaning station, and the sand hopper is connected with an outlet of the conveyor; screening mechanism includes the reciprocating sieve structure and divides the sand fill, the entry intercommunication of reciprocating sieve structure the sand fill for screen qualified sand and non-qualified sand, divide the sand fill with the export intercommunication of reciprocating sieve structure is used for holding qualified sand and non-qualified sand.

The sand reclamation system is described below with reference to specific embodiments to further understand the concepts of the sand reclamation system. Referring to fig. 1, a sand reclamation system 10 includes: a collection mechanism 100 and a screening mechanism 200; the collection mechanism 100 is interconnected with the sifting mechanism 200. Wherein, the collecting mechanism 100 is used for collecting the sand in the sand cleaning station after printing is completed. It should be noted that the sand in the sand cleaning station includes sand solidified by resin and sand not solidified by resin, and in the prior art, various kinds of sand in the sand cleaning station are generally conveyed to a thermal regeneration furnace for thermal regeneration at one time, so that the amount of sand regenerated by thermal regeneration is relatively large, the required combustion gas amount is relatively large, and the cost of sand recovery is high. Wherein, screening mechanism 200 is used for screening the processing to the sand after collecting, screens out the qualified sand that need not carry out the heat method regeneration and directly transports to the printer in and carry out used repeatedly, compares like this in not screening the processing and directly carries out the recovery heat method regeneration processing, can greatly reduce heat method regeneration sand volume to greatly reduce sand recovery cost.

With continued reference to fig. 1, the collecting mechanism 100 includes a conveyor 110 and a sand hopper 120, wherein an inlet of the conveyor 110 is connected to the sand cleaning station, and the sand hopper 120 is connected to an outlet of the conveyor 110. In one embodiment, the conveyor 110 comprises a screw conveyor. Like this, carry out preliminary stirring effect to retrieving sand when being favorable to quick defeated sand through setting up screw conveyer. The conveyor 110 of the present embodiment may be a transfer device having another structure. In one embodiment, the sand hopper 120 is triangular in cross-section. Further, the sand hopper 120 has a top cover that is opened with an opening that fits the outlet pipe of the conveyor 110. Like this, through set up the top cap on sand hopper in order to avoid the great production environment that influences of on-the-spot flying dust of sand recovery. In another embodiment, the collection mechanism 100 and the screening mechanism 200 are both disposed below the foundation. That is, collect mechanism 100 and screening mechanism 200 and set up in ground pit pond, can avoid the polluted environment on the one hand like this, on the other hand conveniently carries out the sand recovery of gravity direction to the sand at sand removal station, reduces to set up middle transfer apparatus, is favorable to practicing thrift manufacturing cost more.

Referring to fig. 2, the screening mechanism 200 includes a vibrating screen structure 210 and a sand separating hopper 220, an inlet of the vibrating screen structure 210 is communicated with the sand hopper 120 for screening qualified sand and non-qualified sand, and the sand separating hopper 220 is communicated with an outlet of the vibrating screen structure 210 for containing qualified sand and non-qualified sand. In one embodiment, the vibrating screen structure 210 includes a body 211, a tertiary screen 212, and a vibrating element 213, the body 211 is connected to the sand hopper 120, the body 211 has an inner cavity, the tertiary screen 212 is received in the inner cavity of the body 211, and the vibrating element 213 is disposed on the body 211. The body 211 is a shell structure, which may be made of metal, and the structure of the body 211 is not particularly limited in this embodiment, and is preferably as shown in the drawings, which is advantageous for installing a screen. In one embodiment, the vibrating member 213 is disposed at a connecting position of the body 211 and the sand hopper 120. Compare like this in set up the vibrating part in other positions of body and be favorable to playing the vibrations effect of sand down more. Wherein the vibration member 213 includes a vibration motor.

In one embodiment, the three-stage screen 212 is a 50-mesh screen 2121, a 100-mesh screen 2122 and a 140-mesh screen 2123, which are sequentially arranged at intervals along the vertical direction. That is, a 50-mesh screen 2121, a 100-mesh screen 2122, and a 140-mesh screen 2123 are provided in the inner cavity of the body 211 at a predetermined interval from top to bottom. It should be noted that, in this embodiment, the screen is suitable for sand recycling of a sand mold printer, and since the qualified sand used by the 3D sand mold printer is 50-140 meshes, in this embodiment, a three-stage screen is correspondingly provided in this range, the 50-mesh screen can be used for filtering impurities and sand blocks with large particles, the 100-mesh screen can screen 50-100 meshes of sand, the 140-mesh screen can screen 100-140 meshes of sand, and the gray matter is below 140 meshes. Specifically, different screens are selected according to the screen mesh range of qualified sand on site, and the screening rate can be improved by arranging a multi-stage screen for matching use. In one embodiment, the screen includes a linear screen, a spiral screen, a circular shaker, or other screen with filtering function.

In one embodiment, the body 211 is provided with a plurality of sand conveying ports 214, and each sand conveying port corresponds to each screen. In one embodiment, the sand conveying port opened in the upper space of the 50-mesh screen 2121 and the sand conveying port opened in the lower space of the 140-mesh screen 2123 are used for conveying non-qualified sand, and the sand conveying port opened in the upper space of the 100-mesh screen 2122 and the sand conveying port opened in the upper space of the 140-mesh screen are used for conveying qualified sand. Namely, the sand below the first layer of screen and the third layer of screen at the upper part is unqualified sand exceeding 50 meshes to 140 meshes, and the sand separated by the second layer of screen and the third layer of screen is qualified sand with 50 meshes to 140 meshes. The sand conveying ports for correspondingly outputting unqualified sand are provided with two sand conveying ports, and the sand conveying ports for outputting qualified sand are also provided with two sand conveying ports. The positions of the sand conveying openings on the body can be arranged on the same side or different sides, and the sand conveying openings are selected according to actual design.

In one embodiment, referring to fig. 1 again, the sand recovery system 10 further includes a conveying mechanism 300, the conveying mechanism 300 includes a sending tank 310 and a conveying pipe 320 connected to each other, the sending tank 310 is communicated with the sand separating hopper 220, and the conveying pipe 320 is used for conveying qualified sand and unqualified sand in the sending tank 310 to corresponding devices respectively. Wherein, divide the sand hopper can be two independent sand hoppers or a sand hopper has two holding storehouses, corresponds qualified sand of storage and unqualified sand respectively. In one embodiment, the sand separating hopper 220 includes a qualified sand hopper 221 and a non-qualified sand hopper 222, the qualified sand hopper communicates with the sand conveying port for conveying qualified sand, and the non-qualified sand hopper communicates with the sand conveying port for conveying non-qualified sand. The sending tank 310 includes positive pressure sending, negative pressure conveying, screw conveying or other conveying modes, and is used for conveying the sand in the sand separating hopper to the corresponding equipment. In one embodiment, the sand reclamation system 10 further includes a reclaimed sand reservoir 400, and the reclaimed sand reservoir 400 is connected to the delivery pipe 320 for delivering qualified sand. That is, the qualified sand is finally transported to the reclaimed sand silo 400 through the transportation pipe 320 for standby. In one embodiment, the sand reclamation system 10 further includes a hot sand reservoir 500, and the hot sand reservoir 500 is connected to a delivery pipe 320 for delivering non-qualified sand. That is, the non-qualified sand is finally transferred to the hot sand silo 500 through the transfer pipe 320 to prepare for hot reclamation.

In a preferred embodiment, an electromagnetic valve is arranged between the sand hopper and the vibrating screen structure. In one embodiment, the sand separating hopper is provided with a material level detector for sending sand amount information of the sand separating hopper. In one embodiment, the sand recovery system comprises an operation system, wherein the operation system is electrically connected with the electromagnetic valve and the material level detector, and is used for receiving a material level signal sent by the liquid material detector and controlling the electromagnetic valve to open and close. When the sand separating hopper is at a low material level, a low signal is sent out, and the control system receives the low signal to control the trigger electromagnetic valve to be opened, so that the sand in the sand hopper is placed into the vibrating screen structure for vibrating screening. Like this through setting up solenoid valve and material level detector, be favorable to through the operation of upper control system automatic control whole sand recovery system to improve sand recovery efficiency.

In one embodiment, the sand reclamation system operates as follows:

the first step is as follows: installing a conveyor at the sand cleaning station, and collecting shakeout of the sand cleaning station into a sand hopper through the conveyor;

the second step is that: separating shakeout in the sand hopper through a vibrating screen structure;

the third step: and storing the separated sand in a sand separating hopper and respectively conveying the sand to a recycling sand warehouse by adopting a conveying mechanism for direct use or conveying the sand to a hot method sand warehouse for hot method regeneration.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A sand reclamation system, said sand reclamation system comprising: a collecting mechanism and a screening mechanism;

the collecting mechanism comprises a conveyor and a sand hopper, an inlet of the conveyor is connected with the sand cleaning station, and the sand hopper is connected with an outlet of the conveyor;

screening mechanism includes the reciprocating sieve structure and divides the sand fill, the entry intercommunication of reciprocating sieve structure the sand fill for screen qualified sand and non-qualified sand, divide the sand fill with the export intercommunication of reciprocating sieve structure is used for holding qualified sand and non-qualified sand.

2. The sand recovery system of claim 1 wherein the shaker structure includes a body connected to the sand hopper, the body having an interior cavity, a tertiary screen received in the interior cavity of the body, and a vibratory member disposed on the body.

3. The sand reclamation system as recited in claim 2, wherein the vibratory member is disposed at a connection location of the body and the sand hopper.

4. The sand reclamation system as recited in claim 2 wherein the tertiary screens are a 50 mesh screen, a 100 mesh screen, and a 140 mesh screen, respectively, spaced apart in the vertical direction.

5. The sand reclamation system as recited in claim 4, wherein the body defines a plurality of sand conveying ports, each sand conveying port corresponding to a respective one of the screens.

6. The sand reclamation system as recited in claim 5, wherein the sand conveying port opened in the upper space of the 50 mesh screen and the sand conveying port opened in the lower space of the 140 mesh screen are used for conveying non-qualified sand, and the sand conveying port opened in the upper space of the 100 mesh screen and the sand conveying port opened in the upper space of the 140 mesh screen are used for conveying qualified sand.

7. The sand recovery system of claim 6 wherein the sand separating hopper comprises a qualified sand hopper in communication with the sand conveying port for conveying qualified sand and a non-qualified sand hopper in communication with the sand conveying port for conveying non-qualified sand.

8. The sand reclamation system as recited in claim 1 further comprising a conveying mechanism, wherein the conveying mechanism comprises a sending tank and a conveying pipe which are connected with each other, the sending tank is communicated with the sand separating hopper, and the conveying pipe is used for conveying qualified sand and unqualified sand in the sending tank to corresponding equipment respectively.

9. The sand reclamation system as recited in claim 8 further comprising a reclaimed sand reservoir, the reclaimed sand reservoir being connected to a delivery line for delivering qualified sand.

10. The sand reclamation system as recited in claim 8 further comprising a hot sand reservoir, the hot sand reservoir being connected to a delivery pipe for delivering non-qualified sand.