CN210208523U

CN210208523U - Sand grain friction device for mechanical regeneration of used sand

Info

Publication number: CN210208523U
Application number: CN201920615781.3U
Authority: CN
Inventors: Xiaoguang Dong; 董晓光
Original assignee: ANHUI QUANCHAI TIANHE MACHINERY CO LTD
Current assignee: ANHUI QUANCHAI TIANHE MACHINERY CO LTD
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-03-31
Anticipated expiration: 2029-04-30

Abstract

The utility model discloses a sand grain friction ware of used sand mechanical regeneration, including the friction case, inside division of friction case top has coarse grinding chamber and correct grinding chamber, inside division of friction case below has the separation chamber, it has the blanking hole to separate between separation chamber and correct grinding chamber, cup joint the pivot between coarse grinding chamber and correct grinding chamber, install the motor on the friction roof board, the output shaft pivot of motor, the both sides of motor are equipped with the used sand entry, a plurality of fixed grinding rod of inner wall installation in coarse grinding chamber, install a plurality of stirring rods in the pivot of coarse grinding chamber department, the friction incasement wall of coarse grinding chamber department has cup jointed the electrothermal tube, cup joint the mill in the pivot of correct grinding chamber department, installation friction tooth between the outer wall of mill and the correct grinding intracavity wall. The electrothermal tube heats the sand, so that the adhesive film is heated up and is more easily rubbed off, the rotating shaft drives the stirring rod to rotate, the sand is stirred, the sand is uniformly heated and is coarsely ground, the coarsely ground sand slides downwards along the millstone and the inner wall of the fine grinding cavity, the millstone is driven to rotate by the rotating shaft, and the friction teeth perform strong friction on the sand.

Description

Sand grain friction device for mechanical regeneration of used sand

Technical Field

The utility model relates to a sand casting technical field specifically is a sand grain friction disc of used sand mechanical regeneration.

Background

In sand casting, 1-7 tons of used sand can be produced when 1 ton of castings are produced, the used sand is usually recycled through mechanical regeneration, a failed binder film on the surface of sand grains needs to be removed during regeneration, so that the performance of original sand is basically recovered, at present, sand materials are mutually impacted, sheared and rubbed in a shell through a vibrator to achieve the purpose of peeling and wrapping residual binder films on the surfaces of the used sand grains, however, mutual friction among the sand grains is completely relied on in vibration friction, the friction force is small, the residual binder films can be removed through long-time friction, the efficiency is low, the friction force is small, and the residual binder films cannot be completely rubbed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sand friction ware of used sand mechanical regeneration to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a sand grain friction device for mechanical regeneration of used sand comprises a friction box, wherein a coarse grinding cavity and a fine grinding cavity are arranged inside the upper portion of the friction box, the coarse grinding cavity and the fine grinding cavity are communicated, a separation cavity is arranged inside the lower portion of the friction box, blanking holes are formed between the separation cavity and the fine grinding cavity, a rotating shaft is rotatably sleeved between the top of the coarse grinding cavity and the bottom of the fine grinding cavity, a motor is fixedly installed on a top plate of the friction box, an output shaft of the motor penetrates through the top of the friction box and is fixedly connected with a rotating shaft, an old sand inlet and a new sand inlet are respectively arranged on the friction boxes on two sides of the motor, a plurality of fixed grinding rods are fixedly installed on the inner wall of the coarse grinding cavity, a plurality of stirring rods are fixedly installed on the rotating shaft of the coarse grinding cavity, the stirring rods and the fixed grinding rods are distributed in a staggered manner, an electric heating pipe is sleeved on the inner wall of the friction box at the position of the, install crisscross friction tooth between the outer wall of mill and the correct grinding intracavity wall, select separately the intracavity and install the sieve, it has the discharge gate to select separately to open on the friction case of chamber bottom.

Preferably, fixed grinding rod and stirring rod are all along the axis direction evenly distributed multirow of pivot, and every row's quantity is four, and the fixed grinding rod and the stirring rod of adjacent two rows all distribute crisscross, and the stirring rod rotates through the pivot and makes sand material by fixed grinding rod and stirring rod multitime stirring when the whereabouts in the corase grind intracavity for sand material collides the friction each other and carries out the corase grind.

Preferably, equal fixed mounting compounding branch on fixed grinding rod and the stirring rod outer wall, compounding branch on fixed grinding rod and the stirring rod is crisscross each other, and compounding branch outer wall is fixed and is equipped with a plurality of clutch blocks for sand material and compounding branch take place relative movement, further friction sand material, the clutch block is globular diamond dust, removes the in-process at the sand material and carries out the corase grind to it.

Preferably, the top of the grinding disc is of a conical structure, the lower part of the grinding disc is of a round table structure with a large upper part and a small lower part, the fine grinding cavity is of a round table structure matched with the lower part of the grinding disc, so that sand slides to the inner wall of the fine grinding cavity along the top of the grinding disc and slides downwards through the round table structure, the friction teeth are alternately installed at the round table structures of the grinding disc and the fine grinding cavity at intervals, the spacing between the friction teeth on the grinding disc and the fine grinding cavity gradually decreases from the top to the bottom of the grinding disc, the friction of the friction teeth with the decreasing spacing becomes finer in the sliding process of the sand, and the adhesive film on.

Preferably, the blanking holes are uniformly distributed with four in the circumferential direction of the rotating shaft, the bottom of the grinding disc is fixedly provided with a driving disc, and the finely ground sand material is pushed into the blanking holes through the driving disc.

Preferably, the sieve plate is a vibrating sieve which is obliquely arranged, sand materials are conveniently sieved, the sand grains which are rubbed to be small fall into the separation cavity and are collected through the discharge hole, and the bottom of the friction box is fixedly provided with the support legs.

Preferably, fixed cover connects the feed back pipe on the friction box of sieve department, pass through support fixed mounting conveying pipeline on the friction box outer wall, the bottom outer wall of feed back pipe intercommunication conveying pipeline, install the spiral track in the conveying pipeline, the fixed cover of top outer wall of conveying pipeline connects the discharging pipe, the discharging pipe is located the old sand entry directly over, passes through the feed back pipe with the good large granule sand material of not rubbing on the sieve and flows into the conveying pipeline, sends into the friction box friction once more through discharging pipe and old sand entry once more through the spiral track, and cyclic friction makes it satisfy the standard.

Preferably, the top of conveying pipeline is installed the orbital driving motor of drive spiral, the fixed cover of bottom outer wall of conveying pipeline has still been connect with the material feeding pipe, is convenient for drop into the conveying pipeline with the old sand and delivers to the old sand entry.

Compared with the prior art, the beneficial effects of the utility model are that: the sand material is heated by the electric heating tube, so that the adhesive film is heated and is easy to rub; the stirring rod rotates to stir the sand, so that old sand and new sand are uniformly mixed, the sand is uniformly heated, relative collision occurs among the sand, and the sand collides with the stirring rod, the fixed grinding rod and the mixing support rod, so that coarse grinding is performed on the sand; the grinding disc rotates, so that in the process that sand grains slide down along the inner walls of the grinding disc and the fine grinding cavity, the grinding disc rotates to enable the friction teeth to move relatively, so that the sand grains are subjected to strong friction, the friction efficiency is high, the spacing between the friction teeth on the grinding disc and the fine grinding cavity is gradually reduced from the top to the bottom of the grinding disc, the friction of the friction teeth with the reduced spacing is finer in the process that the sand grains slide down, and the adhesive film on the surface of the sand grains is completely rubbed off; the sand material after the fine grinding falls to the sieve and screens, the molding sand that satisfies the sand material particle diameter after the friction falls through the discharge gate and falls and collects, the large granule molding sand that the binder did not completely rub off flows back the conveying pipeline through the feed back pipe, thereby carry the old sand entry once more and get into the friction box and carry out the circulating friction, guarantee that final sand grain satisfies the requirement, and the sand grain diameter of backward flow is less than the old sand, can act as the abrasive material of old sand at the circulating friction process, mutual friction gets rid of surface binder film between the sand material when being convenient for the corase grind.

Drawings

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

fig. 2 is an enlarged schematic structural view of a point a in fig. 1 according to the present invention;

fig. 3 is a schematic structural diagram of the millstone of the present invention.

In the figure: 1 friction box, 2 rough grinding chamber, 3 fine grinding chamber, 4 sorting chamber, 5 blanking holes, 6 rotating shaft, 7 motor, 8 fixed grinding rod, 9 stirring rod, 10 electric heating tube, 11 grinding disc, 12 friction teeth, 13 driving disc, 14 sieve plate, 15 discharging port, 16 landing leg, 17 conveying pipe, 18 spiral track, 19 material returning pipe, 20 feeding pipe, 21 discharging pipe, 22 old sand inlet, 23 new sand inlet, 24 material mixing supporting rod and 25 friction block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a sand grain friction device for mechanical regeneration of used sand comprises a friction box 1, a coarse grinding cavity 2 and a fine grinding cavity 3 are arranged inside the upper portion of the friction box 1, the coarse grinding cavity 2 is communicated with the fine grinding cavity 3, a separation cavity 4 is arranged inside the lower portion of the friction box 1, a blanking hole 5 is arranged between the separation cavity 4 and the fine grinding cavity 3, a rotating shaft 6 is rotatably sleeved between the top of the coarse grinding cavity 2 and the bottom of the fine grinding cavity 3, a motor 7 is fixedly installed on the top plate of the friction box 1, an output shaft of the motor 7 penetrates through the top of the friction box 1 and is fixedly connected with the rotating shaft 6, an old sand inlet 22 and a new sand inlet 23 are respectively arranged on the friction box 1 at two sides of the motor 7, a plurality of fixed grinding rods 8 are fixedly installed on the inner wall of the coarse grinding cavity 2, a plurality of stirring rods 9 are fixedly installed on the rotating shaft 6 at the position of the coarse grinding cavity 2, the stirring rods 9 and the fixed grinding rods 8 are distributed in a staggered manner, an electric heating tube, staggered friction teeth 12 are arranged between the outer wall of the grinding disc 11 and the inner wall of the fine grinding chamber 3, a sieve plate 14 is arranged in the separation chamber 4, and a discharge hole 15 is arranged on the friction box 1 at the bottom of the separation chamber 4. After the sand material enters the friction box 1, the electric heating tube 10 heats the sand material, so that the adhesive film is heated and is more easily rubbed off, the motor 7 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the stirring rod 9 to rotate, thereby stirring the sand material, leading the sand material to be heated evenly, and stirring the sand material by the stirring rod 9 and the fixed grinding rod 8 which are staggered with each other, so that the sand materials collide with each other, the sand particles collide with the stirring rod 9 and the fixed grinding rod 8, thereby carrying out coarse grinding on the sand grains, the sand material after coarse grinding flows to the inner wall of the fine grinding chamber 3 along the grinding disc 11 and slides downwards along the grinding disc 11 and the inner wall of the fine grinding chamber 3, the rotating shaft 6 drives the grinding disc 11 to rotate, when the sand grains slide down along the grinding disc 11 and the inner wall of the refining chamber 3, the grinding disc 11 rotates to cause the friction teeth 12 to move relatively, therefore, sand grains are strongly rubbed, residual adhesive is bent and rubbed off, and finally the residual adhesive falls on the sieve plate 14 through the blanking holes 5 and is screened and collected through the discharge hole 15.

Fixed grinding rod 8 and stirring rod 9 are all along the axis direction evenly distributed multirow of pivot 6, and every row's quantity is four, and the fixed grinding rod 8 and the stirring rod 9 of adjacent two rows all distribute crisscross, and stirring rod 9 rotates through pivot 6 and makes the sand material by fixed

grinding rod

8 and 9 stirs many times of stirring rod when falling in the corase grind chamber 2 for the sand material misce bene, it is even to be heated, make the sand material collision friction each other carry out the corase grind.

Equal fixed mounting compounding branch 24 on fixed emery stick 8 and the 9 outer walls of stirring rod, compounding branch 24 on fixed emery stick 8 and the stirring rod 9 is crisscross each other, and the 24 outer wall fixings of compounding branch are equipped with a plurality of clutch blocks 25 for sand material and compounding branch 24 take place relative movement, further rubs sand material, and clutch blocks 25 are globular diamond dust, removes the in-process at sand material and carries out the corase grind to it.

The top of the millstone 11 is a conical structure, the lower part is a circular truncated cone structure with a big top and a small bottom, the refining chamber 3 is a circular truncated cone structure matched with the lower part of the millstone 11, so that sand slides to the inner wall of the refining chamber 3 along the top of the millstone 11 and slides downwards through the circular truncated cone structure, the friction teeth 12 are alternately arranged at the circular truncated cone structures of the millstone 11 and the refining chamber 3 at intervals, the distance between the friction teeth 12 on the millstone 11 and the refining chamber 3 gradually decreases from the top to the bottom of the millstone 11, the friction of the friction teeth 12 with the decreased distance in the sand sliding process becomes finer, and the adhesive film on the surface of the sand is.

Four blanking holes 5 are uniformly distributed along the circumferential direction of the rotating shaft 6, the bottom of the grinding disc 11 is fixedly provided with a driving disc 13, and the sand after fine grinding is pushed into the blanking holes 5 through the driving disc 13.

The sieve plate 14 is a vibrating sieve which is obliquely arranged and is convenient for sieving sand materials, sand grains which are rubbed to be small fall into the separation cavity 4 and are collected through a discharge hole 15, and the bottom of the friction box 1 is fixedly provided with a support leg 16.

Fixed cover connects feed back pipe 19 on the friction box 1 of sieve 14 department, through support fixed mounting conveying pipeline 17 on the friction box 1 outer wall, feed back pipe 19 communicates the bottom outer wall of conveying pipeline 17, install spiral track 18 in the conveying pipeline 17, the fixed cover of top outer wall of conveying pipeline 17 connects discharge pipe 21, discharge pipe 21 is located the old sand entry 22 directly over, big granule sand material that does not rub well on the sieve 14 flows into conveying pipeline 17 through feed back pipe 19, send into friction box 1 friction once more through discharge pipe 21 and old sand entry 22 once more through spiral track 18, cyclic friction makes it satisfy the standard.

The top of the conveying pipe 17 is provided with a driving motor for driving the spiral track 18, and the outer wall of the bottom of the conveying pipe 17 is fixedly sleeved with a feeding pipe 20, so that old sand can be conveniently put into the conveying pipe 17 and conveyed to an old sand inlet 22.

The working principle is as follows: when the utility model is used, old sand is poured into the material conveying pipe 17 through the material feeding port 20, the spiral track 18 conveys the old sand to the material discharging pipe 21 so as to enter the friction box 1 through the old sand inlet 22, and a small amount of new sand is added into the friction box 1 through the new sand inlet 23 at the beginning, so that the new sand serves as a grinding material to rub the old sand; after sand enters the friction box 1, the electric heating tube 10 heats the sand to enable the adhesive film to be heated more easily to be rubbed off, the motor 7 drives the rotating shaft 6 to rotate, the rotating shaft 6 drives the stirring rod 9 to rotate, thereby stirring the sand, old sand and new sand are uniformly mixed and the sand is uniformly heated, the stirring rod 9 and the fixed grinding rod 8 are mutually staggered to stir the sand, so that relative collision occurs between the sand, the sand collides with the stirring rod 9 and the fixed grinding rod 8, thereby carrying out coarse grinding on the sand, the sand after coarse grinding flows to the inner wall of the finish grinding chamber 3 along the grinding disc 11 and slides downwards along the grinding disc 11 and the inner wall of the finish grinding chamber 3, the rotating shaft 6 drives the grinding disc 11 to rotate, so that the sand slides downwards along the grinding disc 11 and the inner wall of the finish grinding chamber 3, the grinding disc 11 rotates to enable the friction teeth 12 to relatively move, thereby carrying out strong friction on the sand, and the distance between the grinding disc 11 and the friction teeth 12 on the finish grinding chamber 3 gradually decreases from the, the sand material gliding in-process is become more meticulous by the friction tooth 12 friction that the interval is degressive, the binder film on sand grain surface rubs completely, then the sand material falls to smart grinding chamber 3 bottom, the driver plate 13 of mill 11 bottom sweeps the sand material into blanking hole 5, the sand material after the fine grinding falls to the sieve 14 on the screening, the molding sand that satisfies the sand material particle size after the friction falls through discharge gate 15 and collects, the large granule molding sand that the binder did not rub completely flows back conveying pipeline 17 through return pipe 19, thereby carry old sand entry 22 once more and get into friction box 1 and carry out the circular friction, guarantee that final sand grain satisfies the requirement, and the sand particle size of backward flow is less than old sand, can act as the abrasive material of old sand in the circular friction process and carry out the corase grind.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a sand friction ware of used sand mechanical regeneration, includes friction case (1), its characterized in that: the grinding device is characterized in that a coarse grinding cavity (2) and a fine grinding cavity (3) are arranged inside the upper portion of a friction box (1), the coarse grinding cavity (2) is communicated with the fine grinding cavity (3), a separation cavity (4) is arranged inside the lower portion of the friction box (1), blanking holes (5) are formed between the separation cavity (4) and the fine grinding cavity (3), a rotating shaft (6) is rotatably sleeved between the top of the coarse grinding cavity (2) and the bottom of the fine grinding cavity (3), a motor (7) is fixedly installed on a top plate of the friction box (1), an output shaft of the motor (7) penetrates through the top of the friction box (1) and is fixedly connected with the rotating shaft (6), an old sand inlet (22) and a new sand inlet (23) are respectively formed in the friction box (1) on the two sides of the motor (7), a plurality of fixed grinding rods (8) are fixedly installed on the inner wall of the coarse grinding cavity (2), and a plurality of stirring rods (9) are fixedly installed on the rotating shaft (6) at the position, stirring rod (9) and fixed grinding rod (8) distribute in a staggered way, it has electrothermal tube (10) to cup joint in friction case (1) inner wall of coarse grinding chamber (2) department, fixed cup joint mill (11) on pivot (6) of finish grinding chamber (3) department, install crisscross friction tooth (12) between the outer wall of mill (11) and finish grinding chamber (3) inner wall, install sieve (14) in separation chamber (4), it has discharge gate (15) to open on friction case (1) of separation chamber (4) bottom.

2. The sand grinder for mechanical reclamation of used sand according to claim 1, wherein: fixed grinding rod (8) and stirring rod (9) are all along the axis direction evenly distributed multirow of pivot (6), and every row's quantity is four, and fixed grinding rod (8) and stirring rod (9) of adjacent two rows all stagger the distribution, and stirring rod (9) are rotated through pivot (6) and are makeed sand material by fixed grinding rod (8) and stirring rod (9) multitime stirring when whereabouts in coarse grinding chamber (2), make sand material collision friction each other carry out the corase grind.

3. The sand grinder for mechanical reclamation of used sand according to claim 1, wherein: equal fixed mounting compounding branch (24) on fixed grinding rod (8) and stirring rod (9) outer wall, compounding branch (24) on fixed grinding rod (8) and stirring rod (9) are crisscross each other, and compounding branch (24) outer wall is fixed and is equipped with a plurality of clutch blocks (25) for sand material and compounding branch (24) take place relative movement, further rub sand material, clutch blocks (25) are globular carborundum, move the in-process at sand material and carry out the corase grind to it.

4. The sand grinder for mechanical reclamation of used sand according to claim 1, wherein: the top of mill (11) is the circular cone structure, and the below is big-end-up's round platform structure, finish grinding chamber (3) are for matching the round platform structure of mill (11) below for the sand material slides to finish grinding chamber (3) inner wall department along mill (11) top, and through the downward landing of round platform structure, friction tooth (12) interval staggered mounting is in the round platform structure department of mill (11) and finish grinding chamber (3), and friction tooth (12) interval on mill (11) and finish grinding chamber (3) is degressive from mill (11) top bottom gradually, and the sand material gliding in-process is become more meticulous by degressive friction tooth (12) friction of interval, rubs the adhesive film on the sand grain surface completely.

5. The sand grinder for mechanical reclamation of used sand according to claim 1, wherein: blanking hole (5) have four along the circumferencial direction evenly distributed of pivot (6), the bottom fixed mounting of mill dish (11) has driver plate (13), and the sand material after will finely grinding passes through driver plate (13) propelling movement to in blanking hole (5).

6. The sand grinder for mechanical reclamation of used sand according to claim 1, wherein: the screen plate (14) is a vibrating screen which is obliquely arranged, sand materials can be screened conveniently, the sand grains which are rubbed to be small fall into the sorting cavity (4) and are collected through the discharge hole (15), and the bottom of the friction box (1) is fixedly provided with support legs (16).

7. The sand grinder for mechanical reclamation of used sand according to claim 1, wherein: fixed material return (19) of cup jointing is gone up in friction case (1) of sieve (14) department, through support fixed mounting conveying pipeline (17) on friction case (1) outer wall, the bottom outer wall of material return (19) intercommunication conveying pipeline (17), install spiral track (18) in conveying pipeline (17), the fixed discharging pipe (21) that cup joints of top outer wall of conveying pipeline (17), discharging pipe (21) are located old sand and enter the mouth (22) directly over, flow into conveying pipeline (17) through material return (19) with the good large granule sand material of not rubbing on sieve (14), send into friction case (1) friction once more through discharging pipe (21) and old sand entry (22) once more through spiral track (18), and circulating friction makes it satisfy the standard.

8. The sand grinder for mechanical reclamation of used sand according to claim 7, wherein: the top of conveying pipeline (17) is installed the driving motor who drives spiral track (18), the fixed cover of bottom outer wall of conveying pipeline (17) has connect material feeding pipe (20), is convenient for drop into conveying pipeline (17) with the used sand and send used sand entry (22) into.