CN212121575U

CN212121575U - Dehydration and purification device for regeneration of sodium silicate sand

Info

Publication number: CN212121575U
Application number: CN202020836495.2U
Authority: CN
Inventors: 赵锦; 方异锋; 宋文付; 徐仁强; 王佳
Original assignee: CMCU Engineering Co Ltd
Current assignee: CMCU Engineering Co Ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-11
Anticipated expiration: 2030-05-19

Abstract

The utility model belongs to the technical field of the treatment of inorganic binders for casting used sand, and relates to a dehydration and purification device for the regeneration of sodium silicate sand, which comprises a cylinder body and a cover plate arranged at the top of the cylinder body, wherein the cover plate is provided with a feeding pipe; the bottom of the cylinder body is provided with a bottom end enclosure; and a water filtering cap is arranged on the bottom end socket. The utility model provides an among the sodium silicate sand wet process regeneration technology, after the sand-water mixture stirs, the problem of sand-water separation, the moisture content of wet sand is steerable 5% ~ 7% after handling, reduction back end drying equipment's that can be very big energy consumption. Is suitable for the wet regeneration process of the sodium silicate sand.

Description

Dehydration and purification device for regeneration of sodium silicate sand

Technical Field

The utility model belongs to the technical field of the processing of the inorganic binder of casting used sand, a dehydration purifier for sodium silicate sand regeneration is related to.

Background

The sodium silicate sand has the advantages of high strength, low cost, simple process, no odor, environmental protection, low energy consumption, good casting quality, few defects and the like, does not generate pungent odor and toxic gas in the casting process, does not harm the body of operators, and is a modeling material which can realize green casting most probably. More than 90% of steel castings in China are treated in a mode of water glass sand casting, landfill or low recovery rate, silica sand resource waste is caused, and the ecological environment is polluted. At present, the regeneration of sodium silicate sand is to remove residual binder and impurities on the surface of sand grains by adopting a technical means for old sand containing sodium silicate, thereby realizing the recycling.

At present, the water glass sand has good regeneration effect by a wet method, the film removing rate is 80-90%, the quality of the regenerated sand is good, and the regenerated sand can replace new sand by 100%. However, in the wet regeneration process, the regeneration equipment occupies a large area, consumes a large amount of water, consumes a large amount of energy, and is difficult to treat sewage, which is a key factor restricting the further popularization of the wet regeneration. Therefore, energy conservation and consumption reduction of the wet regeneration of the used sodium silicate sand are the current research focus.

After the current sand-water mixture regeneration, the wet sand all dries in the open area nature through the tiling to realize the sand-water separation. The mode has large floor area and long drying time of 2-3 days, and a large amount of water is naturally evaporated to cause energy waste.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a dehydration purification device for sodium silicate sand regeneration to improve dehydration purification efficiency, reduce area.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a dehydration purification device for water glass sand regeneration comprises a cylinder body, a cover plate arranged at the top of the cylinder body, and a feeding pipe arranged on the cover plate; the bottom of the cylinder body is provided with a bottom end enclosure; the bottom end socket is of an upper arch shape, and a water filtering cap is arranged on the end socket.

Optionally, a conical hopper is arranged below the cylinder, and the bottom end enclosure is arranged at the bottom of the conical hopper.

Optionally, a water filtering cap is arranged on the bottom end socket.

Optionally, a bin wall vibrator is arranged on the outer side of the conical hopper.

Optionally, a screw feeder is arranged above the bottom seal head.

Optionally, a compressed air inlet pipe is arranged on the cover plate.

Optionally, an overflow groove is arranged below the cover plate.

Optionally, the overflow trough is communicated with an overflow drain pipe.

Optionally, a filter screen is arranged at an inlet of the overflow tank.

Optionally, the taper angle of the cone bucket is greater than 65 °.

The utility model has the advantages as follows:

1. the utility model provides an among the sodium silicate sand wet process regeneration technology, after the sand-water mixture stirs, the problem of sand-water separation, the moisture content of wet sand is steerable 5% ~ 7% after handling, reduction back end drying equipment's that can be very big energy consumption.

2. The utility model discloses area is little, and dehydration purification efficiency is high, has solved present sodium silicate sand wet process regeneration technology, need occupy very big area, tiles the wet sand in spacious area, dries the problem that realizes the sand-water separation through the nature to shorten the dehydration time to 18 ~ 24 hours.

3. The utility model provides a waste water recovery's in the sodium silicate sand wet process regeneration technology problem, the sand-water separation back, pipeline emission to special sewage treatment plant is down connected to the waste water accessible, but the sewage cycle after handling.

4. The utility model provides an improvement sand-water separation efficiency that the vibrator can be very big.

5. The utility model provides an improvement sand-water separation efficiency that compressed air supercharging device can be very big.

6. The utility model is suitable for a wet process regeneration technology of sodium silicate sand.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of the overall structure of the present invention.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to FIG. 1, the reference numbers in the drawings denote: the device comprises a feeding pipe 1, a compressed air inlet pipe 2, a filter screen 3, an overflow trough 4, an overflow drain pipe 5, a barrel 6, a bin wall vibrator 7, a cone hopper 8, a screw feeder 9, a bottom end enclosure 10 and a water filtering cap 11.

The utility model relates to a dehydration purification device for regeneration of sodium silicate sand, which comprises a cylinder body 6 and a cover plate arranged at the top of the cylinder body 6, wherein the cover plate is provided with a feeding pipe 1; a conical hopper 8 is arranged below the cylinder 6, and the bottom end enclosure 10 is arranged at the bottom of the conical hopper 8; a water filtering cap 11 is arranged on the bottom end socket 10; a bin wall vibrator 7 is arranged on the outer side of the conical hopper 8; a screw feeder 9 is arranged above the bottom seal head 10; the cover plate is provided with a compressed air inlet pipe 2; an overflow groove 4 is arranged below the cover plate; the overflow groove 4 is communicated with an overflow drain pipe 5; a filter screen 3 is arranged at the inlet of the overflow groove 4; the conical angle of the conical hopper 8 is more than 65 degrees.

The specific technical scheme of the utility model as follows, mix the sand-water and reach the mixed liquid that water glass got rid of the requirement and send into barrel 6 through inhaling the sand pump. The upper part of the cylinder body 6 is of a vertical barrel-shaped structure, the lower part of the cylinder body is of a cone hopper 8-shaped structure, the cone angle is larger than 65 degrees, and the requirement of natural flow of sand is met. The cover plate of the cylinder 6 is provided with a feeding pipe 1 and a compressed air inlet pipe 2. The side wall of the conical hopper 8 is provided with a bin wall vibrator 7; the bottom end enclosure 10 is designed to be arched upwards and is provided with a special water filtering cap 11; the top of the water filtering cap 11 is provided with a screw feeder 9 for continuously discharging sand after sand-water separation.

The utility model discloses a purification process divide into the triplex:

(1) the height-diameter ratio of the upper barrel-shaped part of the cylinder body 6 is more than 2, and the purpose of primary separation of sand and water is achieved by utilizing different settling speeds of the sand and water. At the inside upper water line department of barrel 6, be equipped with overflow launder 4, can discharge the water after the initial gross separation to sewage treatment plant through overflow launder 4 to be equipped with 70 mesh filter screens 3 at overflow launder 4 entrance, can intercept the little fine sand grain of particle size, avoid the waste of fine sand, and can be mixed with the ash in the sand and take away, play the purification performance.

(2) Most of sand grains are deposited at the bottom of the cylinder body 6 through sedimentation, a bottom end socket 10 arranged on a conical hopper 8 at the bottom of the cylinder body 6 is designed to be in an upper arch shape, special water filtering caps 11 are uniformly distributed on a bottom plate of the cylinder body 6, and waste water which cannot be discharged through the overflow groove 4 is discharged through outlets of the water filtering caps 11 and is connected to a sewage treatment device.

(3) After the sand suction pump stops feeding, the bin wall vibrator 7 on the conical hopper 8 starts to work to vibrate intermittently, so that the sand is prevented from being solidified after a long time. Meanwhile, compressed air begins to be introduced into the compressed air pipe on the cover plate, and water which cannot be naturally discharged through gravity is enabled to be brought out of the purification device through the water filtering cap 11 through rapid impact of air flow.

And (3) through the three steps of dehydration and purification for 18-24 hours, discharging the sand after sand-water separation through a screw feeder 9, and continuously feeding the sand to a rear-section drying device. The water content of the sand passing through the dehydration purification device can be reduced to 5-7 percent, and the energy consumption of the back-stage drying equipment can be greatly reduced.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The utility model provides a dehydration purifier for sodium silicate sand is regenerated which characterized in that: the device comprises a cylinder body and a cover plate arranged at the top of the cylinder body, wherein a feeding pipe is arranged on the cover plate; the bottom of the cylinder body is provided with a bottom end enclosure; the bottom end socket is of an upper arch shape, and a water filtering cap is arranged on the end socket.

2. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 1, wherein: a conical hopper is arranged below the barrel, and the bottom end enclosure is arranged at the bottom of the conical hopper.

3. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 1, wherein: and a water filtering cap is arranged on the bottom end socket.

4. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 2, wherein: and a bin wall vibrator is arranged on the outer side of the conical hopper.

5. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 1, wherein: and a screw feeder is arranged above the bottom seal head.

6. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 1, wherein: and the cover plate is provided with a compressed air inlet pipe.

7. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 1, wherein: an overflow groove is arranged below the cover plate.

8. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 7, wherein: the overflow trough is communicated with an overflow drain pipe.

9. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 7, wherein: and a filter screen is arranged at the inlet of the overflow groove.

10. The dehydration purification apparatus for regeneration of sodium silicate-bonded sand as claimed in claim 2, wherein: the conical angle of the conical hopper is larger than 65 degrees.