CN111531122A

CN111531122A - Powerful rubbing and grinding regenerator for waste molding sand

Info

Publication number: CN111531122A
Application number: CN202010400753.7A
Authority: CN
Inventors: 吴贵雄; 刘海波
Original assignee: Anhui Huasong Recycling Co ltd
Current assignee: Anhui Huasong Recycling Co ltd
Priority date: 2020-05-13
Filing date: 2020-05-13
Publication date: 2020-08-14

Abstract

The invention relates to the field of sand casting, in particular to a waste molding sand powerful rubbing regenerator, which comprises a first-stage rubbing regenerating mechanism, a discharging mechanism and a hot air flow generating mechanism, wherein the first-stage rubbing regenerating mechanism is used for receiving old sand to be regenerated, preliminarily rubbing the old sand and removing a formwork on the surface of the old sand, the second-stage rubbing regenerating mechanism is used for rubbing the old sand again to obtain regenerated sand, the discharging mechanism is arranged on the side part of the second-stage rubbing regenerating mechanism, the input end of the discharging mechanism is connected with the input end of the second-stage rubbing regenerating mechanism and is used for discharging the regenerated sand, and when the second-stage rubbing regenerating mechanism works, the hot air flow generating mechanism is used for introducing air into the second-stage rubbing regenerating mechanism to increase the brittleness and cracks of the formwork on the surface of the old sand, ensuring the subsequent grinding and regeneration effect.

Description

Powerful rubbing and grinding regenerator for waste molding sand

Technical Field

The invention relates to the field of sand casting, in particular to a strong rubbing and grinding regenerator for waste molding sand.

Background

Sand casting refers to a casting process that produces a casting in a sand mold. Steel, iron and most nonferrous metal castings can be obtained by sand casting. The molding material used for sand casting is cheap and easy to obtain, the casting mould is simple and convenient to manufacture, and the casting mould can adapt to single-piece production, batch production and mass production of castings, and is a basic process in casting production for a long time. The sand casting may be classified into clay sand casting, resin sand casting and sodium silicate sand casting according to the binder used. The clay sand production process has the advantages of cheap and easily available raw materials, easy treatment, strong reusability, strong capability of adapting to a modeling mode, convenient storage and transportation and the like, and becomes the most common casting production process in the casting field. In the casting production, a large amount of resources and energy are input, and the serious environmental pollution poses a serious challenge to the casting industry in China. Therefore, the development of green casting technology, the strict control of the discharge of three wastes in the production process, the improvement of the reusability of used sand, the saving of limited silica sand resources and the reduction of production cost become urgent and difficult tasks in the casting industry today. The recycling of used sand is one of important contents for realizing green casting, and the research on the complete regeneration technology of the clay used sand is an important measure for reducing the casting cost, reducing the environmental pollution and saving resources. The clay molding sand is mainly prepared by mixing raw sand, a binder (bentonite and the like), coal powder and the like according to a certain proportion. The molding sand obtained after the clay sand casting mold is cast and boxed is called clay used sand. The clay near the surface of the cavity in the molding sand is baked at high temperature to lose crystal water due to the heat of the high-temperature molten metal during casting, so that the clay loses bonding capability and becomes dead clay. One part of the clay is mixed in the molding sand in powder form, and the other part of the clay is firmly wrapped on the surface of the molding sand in a ceramic film form, so that the performance of the molding sand is seriously influenced, the air permeability and the plasticity of the molding sand are reduced, and the brittleness of the molding sand is increased; secondly, in the casting production process, due to the repeated heat action of high-temperature metal, a small part of sand is crushed, and the crushed small sand grains are mixed in the old sand and become a part of mud in the old sand, so that the performance of the molding sand is influenced; in addition, organic and inorganic binder core sand is widely applied in modern casting production, and the decomposition products of the core sand and the chemical binder are also partially mixed into the used sand; the mixing of the coal powder and the high-temperature decomposition product of the substitute further reduces the activity of the used clay sand and deteriorates the performance of the molding sand. In order to produce qualified castings, production enterprises stabilize the performance of the sand by periodically or irregularly discharging part of used sand and simultaneously adding new sand. The discharged used clay sand cannot be reused for casting production without regeneration treatment and can only be treated as solid waste, which not only causes waste of natural resources, but also causes environmental pollution.

At present, a clay used sand regeneration method commonly used by enterprises is wet regeneration, belongs to one kind of clay used sand complete regeneration, has the problems of huge equipment, troublesome sewage and sludge treatment, high regeneration cost and the like in wet regeneration, and is rarely adopted at present. And in the later period, mechanical regeneration and airflow regeneration methods are also provided, and the sand is regenerated by the collision and rubbing between the sand and equipment and between the sand and the sand under the action of mechanical or airflow.

Chinese patent 201920896775.x discloses a vertical reciprocal dull polish regenerator of rubbing with hands of hot gas flow multiaxis, relates to casting equipment technical field, and this vertical reciprocal dull polish regenerator of rubbing with hands of hot gas flow multiaxis, including first base, the first regeneration box of top fixedly connected with of first base, the first motor of one end fixedly connected with of first regeneration box is kept away from at first base top, the bottom fixedly connected with shock pad of first motor, the output fixedly connected with pivot of first motor. According to the hot air flow multi-shaft vertical reciprocating rubbing and sanding regenerator, air is blown into a heater by a blower and enters a first regeneration box and a second regeneration box after being heated, the requirement on sand is reduced under the action of hot air flow, moisture is continuously evaporated under the heating of the hot air flow, the brittleness and cracks of a formwork on the surface of the sand are greatly increased, and the formwork on the surface of the sand is taken out to be cleaner under the high-speed friction of blades and the sand, so that higher-quality sand is obtained.

However, when the regenerator is used, air needs to be introduced and then heated, and the space of an industrial field may contain high-content coal dust and the high-temperature decomposition products of substitutes thereof, so that the subsequent sand and sand have poor grinding effect, and the quality of the obtained sand material is not high.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a waste molding sand powerful rubbing regenerator, which solves the problem that hot air directly introduced during the rubbing regeneration of the waste sand has more impurities affecting the rubbing effect, the gas introduced into the rubbing regenerator is subjected to impurity removal under the cyclone separation of two stages of cyclone channels formed by an outer pipeline and an inner pipeline, the impurities and water vapor in a particle state are filtered, and the subsequent rubbing regeneration effect is ensured.

In order to solve the technical problems, the invention provides the following technical scheme:

the utility model provides a waste molding sand strong rubbing regenerator, includes:

the primary grinding and regenerating mechanism is used for receiving the old sand to be regenerated, carrying out primary grinding on the old sand and removing a formwork on the surface of the old sand;

the secondary grinding and regenerating mechanism is arranged at the bottom of the primary grinding and regenerating mechanism, and the input end of the secondary grinding and regenerating mechanism is connected with the output end of the primary grinding and regenerating mechanism and used for grinding the old sand again to obtain regenerated sand;

the discharge mechanism is arranged on the side part of the secondary grinding and regenerating mechanism, and the input end of the discharge mechanism is connected with the input end of the secondary grinding and regenerating mechanism and used for discharging the regenerated sand;

and the hot gas flow generating mechanism is arranged on the side part of the secondary grinding regeneration mechanism, is communicated with the inside of the secondary grinding regeneration mechanism and is used for introducing hot gas flow into the inside of the secondary grinding regeneration mechanism when the secondary grinding regeneration mechanism works to increase the brittleness and cracks of the formwork on the surface of the used sand.

As an optimal selection scheme of the waste molding sand powerful rubbing regenerator, the waste molding sand powerful rubbing regenerator further comprises a support frame, the support frame is provided with an upper layer of placing space and a lower layer of placing space, the first-stage rubbing regeneration mechanism is placed in the placing space on the top layer of the support frame, and the second-stage rubbing regeneration mechanism is placed in the placing space on the bottom layer of the support frame.

As an old and useless molding sand brute force rub an optimal solution who grinds the regenerating unit, the regeneration mechanism is rubbed to the one-level and is rubbed the box including the one-level, the one-level is rubbed driving motor and the pivot is rubbed to the one-level, the top and the bottom of the box are rubbed to the one-level are equipped with the one-level respectively and are rubbed the feed inlet and the one-level is rubbed the discharge gate, the lateral part that the box was rubbed to the one-level is equipped with the driving motor is rubbed to the one-level, the output transmission that driving motor was rubbed to the one-level is connected with the pivot is rubbed to the one-level, the pivot setting is rubbed to the one-level and is rubbed the inside of grinding the box at the one-level, and the both.

As an optimal scheme of the waste molding sand powerful rubbing regeneration machine, the secondary rubbing regeneration mechanism comprises a secondary rubbing box body, a secondary rubbing driving motor, a secondary rubbing rotating shaft and a discharge port switch component, the top end of the secondary rubbing box body is provided with a secondary rubbing feed port connected with the primary rubbing discharge port, the side wall of the secondary rubbing box body is respectively provided with a hot gas flow inlet and a secondary rubbing discharge port, the hot gas flow inlet and the secondary rubbing discharge port are positioned at two sides of the secondary rubbing box body, the side part of the secondary rubbing box body is provided with the secondary rubbing driving motor, the secondary rubbing driving motor is arranged close to the hot gas flow inlet, the output end of the secondary rubbing driving motor is in transmission connection with the secondary rubbing rotating shaft, the secondary rubbing rotating shaft is arranged in the secondary rubbing box body, and both ends of the secondary rubbing rotating shaft are rotationally connected with the inner wall of the secondary rubbing box body, the blade is rubbed in the second grade that is equipped with the spiral setting on the pivot is rubbed in the second grade, and the box is rubbed in the second grade and is kept away from one side that the driving motor was rubbed in the second grade and be equipped with discharge gate intercommunication is rubbed with the second grade in the discharge gate intercommunication is rubbed in the second grade, and the discharge hole that the discharge gate was rubbed in the second grade was equipped with to a plurality of circumference distributions on the discharge gate is rubbed in the second grade, and the lateral part that the discharge gate was rubbed in.

As an optimal scheme of the regenerating machine is rubbed with hands to old and useless molding sand brute force, the second grade is rubbed and is ground the blade and set up to four, and the contained angle that adjacent second grade was rubbed and is ground between the blade equals, and every second grade is rubbed and is ground the rotatory looks homogeneous phase of blade and the same.

As a preferred scheme of the waste molding sand powerful rubbing regenerator, the discharge port switch component comprises a mounting support, a switch driving motor, a driving wheel, a transmission belt, a driven wheel, a cam divider, a rotating disc and switch blades, the mounting support is arranged on the outer wall of one side, close to the discharge port, of the secondary grinding box body, the switch driving motor is arranged on the mounting support, an output shaft of the switch driving motor is in transmission connection with the driving wheel, the driving wheel is in transmission connection with the driven wheel through the transmission belt, the driven wheel is sleeved on an input shaft of the cam divider, the cam divider is arranged on the mounting support, the output shaft of the cam divider is in transmission connection with the rotating disc, a plurality of switch blades are distributed on the outer edge of the rotating disc in a circumferential manner, and the switch blades are equal in number.

As an optimal scheme of old and useless molding sand powerful rubbing regenerator, switch blade and discharge opening all set up to the fan ring-type, and switch blade's size is greater than the size of discharge opening, and the lateral part of every discharge opening all is equipped with a blade cover, the blade cover sets up on the outer wall of box is rubbed in the second grade, and the blade cover is located the outer lane of rotary disk, and a terminal surface of blade cover is equipped with the opening, switch blade with opening sliding connection.

As an optimal scheme of old and useless molding sand powerful rubbing regenerator, the discharge mechanism includes stripper and neck bush, the both sides of stripper are equipped with the entry of unloading and the unloading export respectively, the discharge gate intercommunication is rubbed with the second grade in the entry of unloading, and the inside of box is rubbed with the second grade can be dismantled and be connected with the neck bush.

As a preferred scheme of the waste molding sand strong rubbing regenerator, the hot air flow generating mechanism comprises an outer pipeline, an inner pipeline, an impurity concentration box, a connecting pipeline, an electric heater and a fan, the outer pipeline is arranged on the side part of the support frame, the outer pipeline is arranged in a ring shape, the inner pipeline is arranged inside the outer pipeline, the impurity concentration box is arranged at the bottoms of the outer pipeline and the inner pipeline, an outer air inlet is arranged at one end of the outer pipeline, the other end of the outer pipeline is arranged in a closed manner, an outer air outlet is arranged on the side wall of the outer pipeline, a first cyclone channel is formed inside the outer pipeline, the outer air inlet and the outer air outlet are both communicated with the first cyclone channel, a plurality of impurity removing channels are distributed on the inner circumference of the outer pipeline, one end of each impurity removing channel is communicated with the first cyclone channel, the other end of each impurity removing channel is arranged as an impurity removing port, and, and the impurity removing port is communicated with the impurity collecting box, a second cyclone channel is formed in the inner pipeline, the bottom of the inner pipeline is conical, an inner gas outlet and an impurity outlet which are communicated with the second cyclone channel are respectively arranged at the top end and the bottom end of the inner pipeline, an inner gas inlet communicated with the outer gas outlet is arranged on the side wall of the inner pipeline, the connecting pipeline is arranged at the top end of the inner pipeline, one end of the connecting pipeline is connected with the inner gas outlet, the other end of the connecting pipeline is connected with a hot gas inlet, the electric heater and the fan are arranged in the connecting pipeline, the fan is arranged close to the hot gas inlet, and the electric heater is arranged on one side, away from.

As a preferred scheme of the waste molding sand powerful rubbing regenerator, a heating pipe section is arranged on a connecting pipeline and comprises a first pipe section, a second pipe section and a third pipe section, the first pipe section and the third pipe section are respectively arranged at two ends of the second pipe section, an electric heater is arranged on the second pipe section, and the inner diameters of the first pipe section and the third pipe section are gradually reduced from one end close to the second pipe section to one end far away from the second pipe section.

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

the inlet department of grinding the old sand from the one-level is thrown in inside the box is ground to the one-level, start the one-level and grind driving motor, the inside one-level of box is ground to the drive one-level and the pivot is high-speed rotatory, make to grind from the one-level and throw in between the old sand that gets into the one-level and grind the box inside and the old sand, the old sand grinds and collides and rubs between the blade with the high-speed rotatory one-level, tentatively accomplish getting rid of old sand surface mould shell, grind the discharge gate department from the one-level after tentatively grinding and get into to the second grade and grind in grinding regeneration mechanism. Next, start the second grade and rub driving motor, the high-speed rotation of the inside second grade of box is rubbed in the drive second grade for the second grade is rubbed between the inside used sand of box and the used sand, and the used sand is rubbed with the high-speed rotatory second grade and is rubbed between the blade and bump and rub, accomplishes getting rid of the former sand surface mould shell once more, makes rubbing effect of sand material better, can obtain higher quality sand material. When the first-stage grinding driving motor is started to work, the hot air flow generating mechanism is started, air is separated by the cyclone of the two-stage cyclone channel formed by the outer pipeline and the inner pipeline, so that the air can upwards enter the connecting pipeline, and impurities in a particle state and water vapor can be filtered into the impurity concentration box for centralized treatment. Under the condition that the lets in to be normal atmospheric temperature air, start electric heater, electric heater heats gas, when the sand material gets into to the second grade and grinds the box inside like this, the hot gas flow has been had in the second grade grinds the box, make the hot gas flow enter into the second grade through the hot gas flow entry and polish inside the box, grind the high-speed rotatory while of pivot at the second grade and polish driving motor drive second grade, the old sand has reduced the requirement to the sand material under the effect of hot gas flow, moisture constantly evaporates under the heating of hot gas flow, make the fragility and the crackle of old sand surface mould shell all greatly increased, the second grade grinds that the blade and the mould shell on old sand surface took out under the high-speed friction of old sand and takes out cleaner, obtain higher quality sand material, the on-off state of discharge gate switch subassembly control discharge opening, the most regenerated sand material is.

This polish regenerator has set up the two-stage polish regeneration mechanism, carries out abundant polish to the used sand, to getting rid of the former sand surface mould shell for the effect of polishing of sand material is better, can obtain higher quality sand material. When the regeneration mechanism work is rubbed in the second grade of second grade, it rubs the regeneration mechanism to the second grade to let in the hot gas flow to take place the mechanism through the hot gas flow, rub the impurity of effect with the influence that exists in the air and filter, the old sand has reduced the requirement to the sand material under the effect of hot gas flow, moisture constantly evaporates under the heating of hot gas flow, make the fragility and the crackle of old sand surface mould shell all greatly increased, the effect of rubbing of old sand is better, given the hot gas flow simultaneously and taken place the sufficient time of mechanism and remove the heated air, when the regeneration mechanism is rubbed in the sand material entering second grade, the regeneration mechanism inside has had the hot gas flow is rubbed in the second grade.

Drawings

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

FIG. 2 is a side view of the present invention;

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

FIG. 4 is a schematic view of the structure of the two-stage grinding spindle according to the present invention;

FIG. 5 is a schematic structural view of the present invention;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a schematic view of the structure of the discharge opening switch assembly of the present invention;

FIG. 8 is a schematic structural view of a hot air flow generating mechanism according to the present invention;

FIG. 9 is a schematic view of the structure of the present invention at the outer and inner conduits;

FIG. 10 is a schematic cross-sectional view taken at B-B of FIG. 9;

FIG. 11 is a schematic view of the structure of the outer pipe of the present invention;

FIG. 12 is a side view of the present invention at the hot air flow generating mechanism;

FIG. 13 is a schematic cross-sectional view taken at C-C of FIG. 12;

fig. 14 is an enlarged schematic view at B in fig. 13.

The reference numbers in the figures are:

1-grinding and regenerating mechanism in the first stage; 1 a-a grinding box body; 1a 1-level grinding feed inlet; 1a 2-level grinding discharge port; 1 b-a primary grinding drive motor; 1 c-grinding rotating shaft at first stage; 1c 1-level of grinding blades;

2-two-stage grinding and regenerating mechanism; 2 a-two-stage grinding box body; 2a 1-two stage grinding feed inlet; 2a2 — hot gas flow inlet; 2a 3-two stage grinding and discharging port; 2a 4-discharge hole; 2 b-two-stage grinding drive motor; 2 c-secondary grinding rotating shaft; 2c 1-two stage grinding blades; 2 d-a discharge port switch assembly; 2d 1-mounting bracket; 2d 2-switch drive motor; 2d3 — capstan; 2d 4-drive belt; 2d 5-driven wheel; 2d6 — cam divider; 2d 7-rotating disk; 2d 8-switch blade; 2d 9-blade sleeve;

3-a discharging mechanism; 3 a-a discharge cylinder; 3a 1-discharge inlet; 3a 2-discharge outlet; 3 b-inner liner;

4-hot air flow generating mechanism; 4 a-outer tubing; 4a 1-outer air inlet; 4a 2-outer air outlets; 4a 3-edulcoration channel; 4a 4-trash removal port; 4 b-an inner conduit; 4b 1-inner air outlet; 4b2 — impurity outlet; 4b 3-inner air inlet; 4 c-impurity concentration box; 4 d-connecting the pipeline; 4d1 — first tube segment; 4d2 — second tube segment; 4d 3-third tube segment; 4 e-an electric heater; 4 f-a fan;

and 5, supporting frames.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1 and 5, a strong rubbing regenerator for waste molding sand is provided, which comprises:

the primary grinding and regenerating mechanism 1 is used for receiving the old sand to be regenerated, carrying out primary grinding on the old sand and removing a formwork on the surface of the old sand;

the secondary grinding and regenerating mechanism 2 is arranged at the bottom of the primary grinding and regenerating mechanism 1, and the input end of the secondary grinding and regenerating mechanism 2 is connected with the output end of the primary grinding and regenerating mechanism 1 and used for grinding the used sand again to obtain regenerated sand;

and the discharging mechanism 3 is arranged on the side part of the two-stage grinding and regenerating mechanism 2. The input end of the unloading mechanism 3 is connected with the input end of the second-stage grinding and regenerating mechanism 2 and used for discharging regenerated sand;

the hot gas flow generating mechanism 4 is arranged at the side part of the second-stage grinding and regenerating mechanism 2, and the hot gas flow generating mechanism 4 is communicated with the inside of the second-stage grinding and regenerating mechanism 2 and is used for introducing hot gas flow into the inside of the second-stage grinding and regenerating mechanism 2 when the second-stage grinding and regenerating mechanism 2 works so as to increase the brittleness and cracks of the formwork on the surface of the used sand;

support frame 5, support frame 5 have upper and lower two-layer place the space, and regeneration mechanism 1 is rubbed in the one-level places in the place space of 5 top layers of support frame, and regeneration mechanism 2 is rubbed in the second-level places in the place space of 5 bottom layers of support frame.

Please refer to 2 and fig. 3, regeneration mechanism is rubbed to the first level in the figure 1 includes that the one-level grinds box 1a, the one-level grinds driving motor 1b and the one-level grinds pivot 1c, the top and the bottom that the box 1a was rubbed to the one-level are equipped with the one-level respectively and rub feed inlet 1a1 and the one-level grinds discharge gate 1a2, the lateral part that the box 1a was rubbed to the one-level is equipped with the one-level and grinds driving motor 1b, the output transmission that driving motor 1b was rubbed to the one-level is connected with the one-level and grinds pivot 1c, the pivot 1c is rubbed to the one-level and is set up the inside of grinding box 1a in the one-level, and the both ends that pivot 1c was rubbed to the one-level all with the one-level and grinds the inner wall rotation connection of. When the one-level is rubbed and is ground driving motor 1b during operation, the high-speed rotation of the inside one-level of drive one-level is rubbed and is ground pivot 1c of box 1a for throw in from one-level and grind between the inside old sand of box 1a and the old sand, collide and rub between old sand and the high-speed rotatory one-level of grinding blade 1c1, tentatively accomplish the getting rid of the former sand surface mould shell between the one-level of grinding feed inlet 1a 1.

Referring to fig. 2, 3 and 4, the secondary grinding regeneration mechanism 2 includes a secondary grinding box 2a, a secondary grinding driving motor 2b, a secondary grinding rotating shaft 2c and a discharge port switch component 2d, the top of the secondary grinding box 2a is provided with a secondary grinding feed port 2a1 connected with a primary grinding discharge port 1a2, the side wall of the secondary grinding box 2a is respectively provided with a hot air inlet 2a2 and a secondary grinding discharge port 2a3, the hot air inlet 2a2 and the secondary grinding discharge port 2a3 are located at two sides of the secondary grinding box 2a, the side of the secondary grinding box 2a is provided with a secondary grinding driving motor 2b, the secondary grinding driving motor 2b is arranged close to the inlet 2a2, the output end of the secondary grinding driving motor 2b is connected with a secondary grinding rotating shaft 2c in a transmission manner, the secondary grinding rotating shaft 2c is arranged inside the secondary grinding box 2a, and the both ends that the second grade ground pivot 2c all ground the box 2a inner wall rotation with the second grade and be connected, the second grade that is equipped with spiral setting on the second grade grinds pivot 2c grinds blade 2c1, the second grade grinds the box 2a and is kept away from the one side that the second grade ground driving motor 2b and be equipped with discharge mechanism 3, discharge mechanism 3 inside grinds discharge gate 2a3 intercommunication with the second grade, the second grade is ground and is equipped with a plurality of circumferences on discharge gate 2a3 and distributes and grinds discharge hole 2a4 on the box 2a outer wall at the second grade, the lateral part that the discharge gate 2a3 was ground in the second grade is equipped with discharge gate switch module 2 d. Rub the working method of regeneration mechanism 1 similar with the one-level, the feed inlet 2a1 is rubbed with the one-level and is rubbed discharge gate 1a2 intercommunication to the second grade, receive and come from the one-level and rub the interior old sand that accomplishes preliminary polishing of box 1a, the driving motor 2b during operation is rubbed to the second grade, the high-speed rotation of pivot 2c is rubbed to the inside second grade of box 2a is rubbed to the drive second grade, make the second grade rub between the inside old sand of box 2a and the old sand, the old sand is rubbed with high-speed rotatory second grade and is rubbed and rub and take place collision and friction between blade 2c1, accomplish the removal to old sand surface mould shell once more, make the effect of rubbing of sand material better, can obtain higher quality sand material.

Referring to fig. 4, the two-stage grinding blades 2c1 are arranged in four rows, the included angles between the adjacent two-stage grinding blades 2c1 are equal, and the rotation phases of the two-stage grinding blades 2c1 are the same. Four grades of second grades are rubbed the setting of blade 2c1 for the second grade is rubbed the spiral that the pivot 2c formed and is rubbed and just narrower with the isolating channel, makes the speed of flow of sand material in the spiral is rubbed and isolating channel faster, and the effect that the blade 2c1 was rubbed and is ground by the second grade is better, can rub discharge gate 2a3 department from the second grade simultaneously and be thrown away and get into the mechanism of unloading 3 in by the separation, unload the process.

Referring to fig. 5, 6 and 7, the outlet switch assembly 2d includes a mounting bracket 2d1, a switch driving motor 2d2, a driving wheel 2d3, a transmission belt 2d4, a driven wheel 2d5, a cam divider 2d6, a rotating disk 2d7 and switch blades 2d8, a mounting bracket 2d1 is provided on an outer wall of the second-stage grinding box 2a near the second-stage grinding outlet 2a3, a switch driving motor 2d2 is provided on the mounting bracket 2d1, an output shaft of the switch driving motor 2d2 is in transmission connection with the driving wheel 2d3, the driving wheel 2d3 is in transmission connection with the driven wheel 2d5 through the transmission belt 2d4, the driven wheel 2d5 is sleeved on an input shaft of the cam divider 2d6, the cam divider 2d6 is provided on the mounting bracket 2d1, an output shaft of the cam divider 2d6 is in transmission connection with the rotating disk 2d7, and a plurality of switch blades 2d8 are distributed along the circumference of the, the switch blades 2d8 are equal in number and correspond to the discharge holes 2a4 one by one. When the switch driving motor 2d2 works, a belt transmission module consisting of the driving wheel 2d3, the transmission belt 2d4 and the cam divider 2d6 drives the input shaft of the cam divider 2d6 to rotate, when the input shaft of the cam divider 2d6 rotates, a conjugate cam on the input shaft is vertically meshed with an indexing disc with evenly distributed needle bearings on the output shaft of the cam divider 2d6 in a gapless manner, a curved section of a cam profile surface drives the needle bearings on the indexing disc to drive the indexing disc to index, the indexing disc is made to be static by the straight section and is positioned and self-locked, the input shaft rotates for one circle, and the output shaft of the cam divider 2d6 completes an indexing process of one-motion and one-stop. When the cam divider 2d6 performs intermittent indexing rotation, the rotating disc 2d7 performs intermittent indexing rotation, that is, when the switch driving motor 2d2 drives the cam divider 2d6 to work, the switch driving motor drives the switch blades 2d8 on the rotating disc 2d7 to perform intermittent indexing rotation, and the positions of each switch blade 2d8 and the corresponding discharge hole 2a4 are changed to close or open each discharge hole 2a4, so that the sand after being ground again can enter the discharge mechanism 3 from the discharge hole 2a 4.

The switch blade 2d8 and discharge opening 2a4 all set up to fan ring-type, and the size of switch blade 2d8 is greater than the size of discharge opening 2a4, the lateral part of every discharge opening 2a4 all is equipped with a blade cover 2d9, blade cover 2d9 sets up on the outer wall of second grade grinding box 2a, and the blade cover 2d9 is located the outer lane of rotary disk 2d7, the terminal surface of blade cover 2d9 is equipped with the opening, switch blade 2d8 and opening sliding connection. When the rotating disk 2d7 rotates, the switch blade 2d8 can slide into the blade sleeve 2d9 or disengage from the blade sleeve 2d9, and the overlapping area between the switch blade 2d8 and the discharge hole 2a4 changes to close or open each discharge hole 2a 4.

Referring to fig. 3, the discharging mechanism 3 includes a discharging cylinder 3a and an inner bushing 3b, a discharging inlet 3a1 and a discharging outlet 3a2 are respectively disposed on two sides of the discharging cylinder 3a, the discharging inlet 3a1 is communicated with a second-stage grinding discharging port 2a3, and the inner bushing 3b is detachably connected inside the second-stage grinding box body 2 a. The inner bush 3b and the inner wall of the discharging cylinder 3a are detachably connected, and under the condition of long-term use, in order to keep the inside tidiness of the discharging cylinder 3a, each inner bush 3b arranged on the discharging cylinder can be replaced, and the sand stuck on the detached inner bush 3b can be cleaned, so that the waste of materials is avoided.

Referring to fig. 8, 9, 10 and 11, the hot air generating mechanism 4 includes an outer pipeline 4a, an inner pipeline 4b, an impurity concentration box 4c, a connecting pipeline 4d, an electric heater 4e and a fan 4f, the outer pipeline 4a is disposed at a side portion of the support frame 5, the outer pipeline 4a is annular, the inner pipeline 4b is disposed inside the outer pipeline 4a, the impurity concentration box 4c is disposed at bottoms of the outer pipeline 4a and the inner pipeline 4b, an outer air inlet 4a1 is disposed at one end of the outer pipeline 4a, the other end of the outer pipeline 4a is sealed, an outer air outlet 4a2 is disposed on a sidewall of the outer pipeline 4a, a first cyclone channel is formed inside the outer pipeline 4a, the outer air inlet 4a1 and the outer air outlet 4a2 are both communicated with the first cyclone channel, a plurality of impurity removing channels 4a3 are circumferentially disposed inside the outer pipeline 4a, one end of the impurity removing channel 4a3 is communicated with the first cyclone channel, the other end of the impurity removing channel 4a3 is provided with an impurity removing port 4a4, the impurity removing port 4a4 is circumferentially distributed on the outer wall of the outer pipeline 4a, the impurity removing port 4a4 is communicated with the impurity collecting box 4c, a second cyclone channel is formed inside the inner pipeline 4b, the bottom of the inner pipeline 4b is tapered, an inner air outlet 4b1 and an impurity outlet 4b2 which are communicated with the second cyclone channel are respectively arranged at the top end and the bottom end of the inner pipeline 4b, an inner air inlet 4b3 communicated with an outer air outlet 4a2 is arranged on the side wall of the inner pipeline 4b, a connecting pipeline 4d is arranged at the top end of the inner pipeline 4b, one end of the connecting pipeline 4d is connected with the inner air outlet 4b1, the other end of the connecting pipeline 4d is connected with a hot air inflow port 2a2, an electric heater 4e and a fan 4f are arranged in the connecting pipeline 4d, the fan 4f is arranged close to the hot air inflow port 2a2, and one side, far away from the hot air inflow port 2a 2.

The outer gas inlet 4a1 can be connected with gas discharge pipelines of other industrial equipment, gas with waste heat generated in industry is introduced into the outer pipeline 4a, the waste heat gas entering the outer pipeline 4a enters the first cyclone channel in a tangential direction, solid particle impurities or residual liquid drops with larger inertia centrifugal force are thrown to the inner wall of the outer pipeline 4a under the action of centrifugal force, first-stage impurity removal is carried out, the solid particle impurities or the residual liquid drops enter the impurity removal channel 4a3, the solid particle impurities or the residual liquid drops are discharged from the impurity removal port 4a4 along the impurity removal channel 4a3 and finally fall into the impurity concentration box 4c for concentrating impurities, and the gas with waste heat enters the inner pipeline 4b from the outer gas outlet 4a 2. After the waste heat gas enters the second cyclone channel, the waste heat gas enters the inner pipeline 4b with a conical bottom in the appearing direction, the fan 4f is started, the residual impurities in the waste heat gas entering the second cyclone channel are thrown to the inner wall of the inner pipeline 4b by the rotating motion caused by the tangential inflow of the air flow at the next stage under the action of the fan 4f, the residual impurities collide with the inner wall of the inner pipeline 4b and are discharged from the impurity outlet 4b2 to enter the impurity concentration box 4c, the waste heat gas is discharged upwards from the inner air outlet 4b1 to enter the connecting pipeline 4d and continuously subjected to the continuous action of the fan 4f, the gas with the waste heat enters the secondary grinding box body 2a, the requirement on sand materials is reduced by the action of hot air flow, the moisture is continuously evaporated under the heating of the hot air flow, and the brittleness and cracks of the surface formwork of the old sand are greatly increased, the second-stage grinding blade 2c1 and the used sand rub at a high speed to take out the formwork on the surface of the used sand more cleanly, and a higher-quality sand material is obtained. The outer air inlet 4a1 can also be directly connected with a blower, the blower directly blows the gas at normal temperature into the outer pipeline 4a, the gas can upwards enter the connecting pipeline 4d in accordance with the above, and the impurities and the water vapor in the particle state can be filtered into the impurity concentration box 4c for centralized treatment. If the air is introduced, the electric heater 4e needs to be started when the hot air flow generation mechanism 4 works, and the electric heater 4e heats the gas which flows into the second-stage grinding box body 2a from the connecting pipeline 4d, so that the hot air flows into the second-stage grinding box body 2 a.

Referring to fig. 12, 13 and 14, a heating pipe section is disposed on the connecting pipe 4d, the heating pipe section includes a first pipe section 4d1, a second pipe section 4d2 and a third pipe section 4d3, the first pipe section 4d1 and the third pipe section 4d3 are respectively disposed at two ends of the second pipe section 4d2, the electric heater 4e is mounted on the second pipe section 4d2, inner diameters of the first pipe section 4d1 and the third pipe section 4d3 are gradually reduced from an end close to the second pipe section 4d2 to an end far from the second pipe section 4d2, that is, a flow cross section of the connecting pipe 4d and the heating pipe at a connecting inlet is gradually increased, and a flow cross section of the connecting outlet is gradually reduced and restored to the original shape. According to bernoulli's theorem, the smaller the velocity of the fluid at a certain position, the higher the pressure at that position, and conversely, the larger the velocity of the fluid, the smaller the pressure, that is, when the gas flows through the heating pipe section equipped with the electric heater 4e, the flow velocity becomes smaller, so that the gas can be sufficiently heated by the electric heater 4e, and when the gas flows out from the heating pipe section and enters the connecting pipe 4d again, the flow velocity increases.

The working principle of the invention is as follows: throw in the one-level grinding box body 1a inside from one-level grinding feed inlet 1a1 with the old sand, start one-level grinding driving motor 1b, the inside one-level grinding pivot 1c of box body 1a is ground to the drive one-level grinding high-speed rotation, make and throw in from one-level grinding feed inlet 1a1 and get into the one-level grinding between the old sand of box body 1a inside and the old sand, the old sand rubs and rubs with high-speed rotatory one-level grinding between blade 1c1, the removal to the old sand surface mould shell is tentatively accomplished, rub after tentatively and rub discharge gate 1a2 from the one-level and get into to the second grade and rub regeneration mechanism 2. Next, start the second grade and rub driving motor 2b, the high-speed rotation of the inside second grade of box 2a is rubbed and rubbed in the drive second grade, make the second grade rub between the inside used sand of box 2a and the used sand, the used sand rubs and rubs between blade 2c1 with the high-speed rotatory second grade and collide and rub, accomplish the getting rid of the former sand surface mould shell once more, make the effect of rubbing of sand material better, can obtain higher quality sand material. When the first-stage grinding driving motor 1b is started to work, the hot air flow generating mechanism 4 is started, air enters the connecting pipeline 4d upwards under the cyclone separation of two stages of cyclone channels formed by the outer pipeline 4a and the inner pipeline 4b, and impurities and water vapor in particle states are filtered into the impurity concentration box 4c for centralized treatment. Under the condition of introducing normal temperature air, the electric heater 4e is started, the electric heater 4e heats the air, thus, when the sand enters the interior of the second stage grinding box 2a, the second stage grinding box 2a already contains a hot gas flow, so that the hot gas flow enters the interior of the second stage grinding box 2a through the hot gas flow inlet 2a2, when the second-stage grinding driving motor 2b drives the second-stage grinding rotating shaft 2c to rotate at a high speed, the requirements of the used sand on the sand are reduced under the action of hot air flow, the water is continuously evaporated under the heating of hot air flow, so that the brittleness and cracks of the formwork on the surface of the used sand are greatly increased, the formwork on the surface of the used sand is taken out more cleanly under the high-speed friction of the second-stage grinding blade 2c1 and the used sand, a higher-quality sand material is obtained, the opening and closing state of the discharge hole 2a4 is controlled by the discharge hole opening and closing component 2d, and the most regenerated sand material is discharged from the discharge outlet 3a 2.

This polish regenerator has set up the two-stage polish regeneration mechanism, carries out abundant polish to the used sand, to getting rid of the former sand surface mould shell for the effect of polishing of sand material is better, can obtain higher quality sand material. When the regeneration mechanism 2 work is rubbed in the second grade of second grade, rub through the hot gas flow and rub regeneration mechanism 2 interior logical hot gas flow of letting in of mechanism 4 to the second grade, and filter the impurity of the effect of rubbing the effect that exists in the air, the old sand has reduced the requirement to the sand material under the effect of hot gas flow, moisture constantly evaporates under the heating of hot gas flow, make the fragility and the crackle of old sand surface mould shell all greatly increased, the effect of rubbing of old sand is better, given the hot gas flow simultaneously and taken place the sufficient time of mechanism 4 and remove the heated air, when the sand material gets into the second grade and rub regeneration mechanism 2, the second grade is rubbed regeneration mechanism 2 inside and has been had the hot gas flow.

Claims

1. The utility model provides a waste molding sand strong rubbing regenerator which characterized in that includes:

the primary grinding and regenerating mechanism (1) is used for receiving the old sand to be regenerated, carrying out primary grinding on the old sand and removing a formwork on the surface of the old sand;

the secondary grinding and regenerating mechanism (2) is arranged at the bottom of the primary grinding and regenerating mechanism (1), and the input end of the secondary grinding and regenerating mechanism (2) is connected with the output end of the primary grinding and regenerating mechanism (1) and is used for grinding the old sand again to obtain regenerated sand;

the discharge mechanism (3) is arranged on the side part of the secondary grinding and regenerating mechanism (2), and the input end of the discharge mechanism (3) is connected with the input end of the secondary grinding and regenerating mechanism (2) and used for discharging the regenerated sand;

the hot air flow generating mechanism (4) is arranged on the side part of the secondary grinding and regenerating mechanism (2), and the hot air flow generating mechanism (4) is communicated with the inside of the secondary grinding and regenerating mechanism (2) and is used for introducing hot air flow into the inside of the secondary grinding and regenerating mechanism (2) when the secondary grinding and regenerating mechanism (2) works to increase the brittleness and cracks of a formwork on the surface of old sand.

2. The waste molding sand powerful rubbing and regenerating machine is characterized by further comprising a support frame (5), wherein the support frame (5) is provided with an upper placing space and a lower placing space, the first-stage rubbing and regenerating mechanism (1) is placed in the placing space on the top layer of the support frame (5), and the second-stage rubbing and regenerating mechanism (2) is placed in the placing space on the bottom layer of the support frame (5).

3. The waste molding sand powerful rubbing and regenerating machine as claimed in claim 2, characterized in that the first level of rubbing and regenerating mechanism (1) comprises a first level of rubbing and grinding box body (1a), a first level of rubbing and grinding driving motor (1b) and a first level of rubbing and grinding rotating shaft (1c), the top and the bottom of the first-level grinding box body (1a) are respectively provided with a first-level grinding feed inlet (1a1) and a first-level grinding discharge outlet (1a2), the side part of the first-level grinding box body (1a) is provided with the first-level grinding driving motor (1b), the output end of the first-level grinding driving motor (1b) is in transmission connection with a first-level grinding rotating shaft (1c), the first-level grinding rotating shaft (1c) is arranged inside the first-level grinding box body (1a), and the both ends that the pivot (1c) was rubbed to the one-level all rub the inner wall rotation connection of grinding box body (1a) with the one-level, rub the one-level that is equipped with spiral setting on pivot (1c) and rub blade (1c1) with the one-level.

4. The waste molding sand strong rubbing regeneration machine according to claim 3, wherein the secondary rubbing regeneration mechanism (2) comprises a secondary rubbing box body (2a), a secondary rubbing drive motor (2b), a secondary rubbing rotation shaft (2c) and a discharge port switch component (2d), the top end of the secondary rubbing box body (2a) is provided with a secondary rubbing feed port (2a1) connected with the primary rubbing discharge port (1a2), the side wall of the secondary rubbing box body (2a) is respectively provided with a hot air inlet (2a2) and a secondary rubbing discharge port (2a3), the hot air inlet (2a2) and the secondary rubbing discharge port (2a3) are positioned at two sides of the secondary rubbing box body (2a), the side part of the secondary rubbing box body (2a) is provided with the secondary rubbing drive motor (2b), and the secondary rubbing drive motor (2b) is arranged close to the hot air inlet (2a2), the output end of the second-stage grinding driving motor (2b) is connected with a second-stage grinding rotating shaft (2c) in a transmission way, the second-stage grinding rotating shaft (2c) is arranged inside the second-stage grinding box body (2a), and the both ends that the second grade rubbed pivot (2c) were rubbed and all rubbed box (2a) inner wall rotation with the second grade and be connected, the second grade is rubbed and is equipped with blade (2c1) are rubbed and grind in the second grade that is equipped with spiral setting on pivot (2c), the second grade is rubbed and is ground box (2a) and keep away from one side that the second grade was rubbed and is ground driving motor (2b) and be equipped with discharge gate (2a3) intercommunication is rubbed and ground with the second grade to discharge gate (3) inside, and the second grade is rubbed and is equipped with discharge hole (2a4) that a plurality of circumferences distribute on the outer wall of box (2a) are rubbed and is ground in the second grade on discharge gate (2a3), and the lateral part that the second grade was rubbed and is.

5. The waste sand brute force rubbing regenerating machine according to claim 4, characterized in that the two-stage grinding blades (2c1) are arranged in four ways, the included angle between the adjacent two-stage grinding blades (2c1) is equal, and the rotation phase of each two-stage grinding blade (2c1) is the same.

6. The waste molding sand powerful rubbing and regenerating machine is characterized in that the discharge port switch assembly (2d) comprises a mounting bracket (2d1), a switch driving motor (2d2), a driving wheel (2d3), a driving belt (2d4), a driven wheel (2d5), a cam divider (2d6), a rotating disk (2d7) and a switch blade (2d8), the mounting bracket (2d1) is arranged on the outer wall of one side, close to the secondary grinding discharge port (2a3), of the secondary grinding box body (2a), the switch driving motor (2d2) is arranged on the mounting bracket (2d1), the driving wheel (2d3) is connected to the output shaft of the switch driving motor (2d2) in a transmission mode, the driving wheel (2d3) is connected with the driven wheel (2d5) in a transmission mode through the driving belt (2d4), and the driven wheel (2d5) is sleeved on the input shaft of the cam (2d6), the cam divider (2d6) is arranged on the mounting bracket (2d1), an output shaft of the cam divider (2d6) is in transmission connection with the rotating disc (2d7), and a plurality of the (2a8) and the (2a8) are arranged on the outer circumference of the rotating disc (2d7) in a distributed mode, wherein the number of the (2a8) and the number of the (2a8) are equal to that of the discharge holes (2a4), and the discharge holes correspond to one another.

7. The waste molding sand strong rubbing regenerator according to claim 6, wherein the opening and closing blade (2d8) and the discharge hole (2a4) are both arranged in a fan ring shape, the size of the opening and closing blade (2d8) is larger than that of the discharge hole (2a4), the side of each discharge hole (2a4) is provided with a blade sleeve (2d9), the blade sleeve (2d9) is arranged on the outer wall of the secondary grinding box body (2a), the blade sleeve (2d9) is positioned at the outer ring of the rotating disk (2d7), one end face of the blade sleeve (2d9) is provided with an opening, and the opening and closing blade (2d8) is in sliding connection with the opening.

8. The waste molding sand strong rubbing regenerator according to claim 7, wherein the discharging mechanism (3) comprises a discharging cylinder (3a) and an inner bushing (3b), a discharging inlet (3a1) and a discharging outlet (3a2) are respectively arranged on two sides of the discharging cylinder (3a), the discharging inlet (3a1) is communicated with the second-stage rubbing discharge port (2a3), and the inner bushing (3b) is detachably connected to the inside of the second-stage rubbing box body (2 a).

9. The powerful rubbing and grinding regenerator for waste molding sand according to claim 8, wherein the hot air flow generating mechanism (4) comprises an outer pipeline (4a), an inner pipeline (4b), an impurity concentration box (4c), a connecting pipeline (4d), an electric heater (4e) and a fan (4f), the outer pipeline (4a) is arranged at the side of the support frame (5), the outer pipeline (4a) is annular, the inner pipeline (4b) is arranged inside the outer pipeline (4a), the impurity concentration box (4c) is arranged at the bottom of the outer pipeline (4a) and the inner pipeline (4b), an outer air inlet (4a1) is arranged at one end of the outer pipeline (4a), the other end of the outer pipeline (4a) is closed, an air outlet (4a2) is arranged on the side wall of the outer pipeline (4a), and a first cyclone channel is formed inside the outer pipeline (4a), the outer air inlet (4a1) and the outer air outlet (4a2) are both communicated with the first cyclone channel, a plurality of impurity removing channels (4a3) are distributed on the circumference of the inner part of the outer pipeline (4a), one end of each impurity removing channel (4a3) is communicated with the first cyclone channel, the other end of each impurity removing channel (4a3) is set as an impurity removing port (4a4), the impurity removing ports (4a4) are circumferentially distributed on the outer wall of the outer pipeline (4a), the impurity removing ports (4a4) are communicated with an impurity collecting box (4c), a second cyclone channel is formed inside the inner pipeline (4b), the bottom of the inner pipeline (4b) is set to be conical, the top end and the bottom end of the inner pipeline (4b) are respectively provided with an inner air outlet (4b1) and an impurity outlet (4b2) which are communicated with the second cyclone channel, and the inner air inlet (4b3) communicated with the outer air outlet (4a2) is arranged on the side wall of the inner pipeline (4b), the top end of the inner pipeline (4b) is provided with the connecting pipeline (4d), one end of the connecting pipeline (4d) is connected with the inner air outlet (4b1), the other end of the connecting pipeline (4d) is connected with the hot air inlet (2a2), the electric heater (4e) and the fan (4f) are arranged in the connecting pipeline (4d), the fan (4f) is arranged at a position close to the hot air inlet (2a2), and the electric heater (4e) is arranged at one side, away from the hot air inlet (2a2), of the fan (4 f).

10. The waste molding sand powerful rubbing regenerator is characterized in that a heating pipe section is arranged on the connecting pipe (4d), the heating pipe section comprises a first pipe section (4d1), a second pipe section (4d2) and a third pipe section (4d3), the first pipe section (4d1) and the third pipe section (4d3) are respectively arranged at two ends of the second pipe section (4d2), the electric heater (4e) is arranged on the second pipe section (4d2), and the inner diameters of the first pipe section (4d1) and the third pipe section (4d3) are gradually reduced from one end close to the second pipe section (4d2) to one end far away from the second pipe section (4d 2).