CN114273060B

CN114273060B - Molding sand crushing equipment

Info

Publication number: CN114273060B
Application number: CN202210200539.6A
Authority: CN
Inventors: 牛纯强; 曹钊兴
Original assignee: Longkou Jiangda Automobile Fitting Co ltd
Current assignee: Longkou Jiangda Automobile Fitting Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-06-07
Anticipated expiration: 2042-03-03
Also published as: CN114273060A

Abstract

The invention relates to the technical field of crushing equipment, and discloses molding sand crushing equipment which comprises an installation frame, a crushing device and a grinding device, wherein the crushing device and the grinding device are installed on the installation frame, the crushing device is connected with the grinding device in a bearing mode, the crushing device comprises a matching groove fixed on the installation frame, a squeezing roller which is rotatably connected into the matching groove through a center shaft, and a first driving mechanism installed on the installation frame; the matching groove is of a U-shaped structure, the extrusion roller is close to the inner bottom of the matching groove, and the peripheral surface of the extrusion roller is matched with the inner wall of the matching groove for use; the invention has the advantages of less energy consumption, low cost, less material consumption, high integration degree, wide application range and strong practicability, and can effectively reduce the cost.

Description

Molding sand crushing equipment

Technical Field

The invention relates to the technical field of crushing equipment, in particular to molding sand crushing equipment.

Background

Casting is a method of casting liquid metal into a casting cavity with a shape adapted to a part, and cooling and solidifying the liquid metal to obtain the part or a blank, wherein most of the cast substances are the metal which is originally in a solid state and is heated to a liquid state. The sand casting refers to a casting method for producing castings in sand molds, and in the casting industry, the sand casting is a common casting method, in the sand casting, after the castings are demoulded, molding sand needs to be crushed again so as to be reused, and when an existing crusher works, large raw materials are crushed into fragments by using methods such as extrusion, splitting, bending, impacting, rolling and the like.

The patent of the invention discloses a molding sand recovery and crushing device for casting, which comprises a machine body, wherein the top of the machine body is provided with a feed hopper, the interior of the machine body is sequentially provided with a primary crushing cavity, a secondary crushing cavity and a crushing cavity from top to bottom, the primary crushing cavity is internally provided with a pair of primary crushing rollers in transmission connection, the secondary crushing cavity is internally provided with a pair of secondary crushing rollers in transmission connection, the crushing cavity is internally provided with a crushing cutter shaft, the bottom of the crushing cavity is provided with a discharge hole, and the discharge hole is provided with a filter screen; the machine body is provided with a water injection cooling mechanism, and the water injection cooling mechanism comprises mounting bases arranged on two sides of the machine body; the bottom of the water tank is connected with a main water pipe, and a plurality of branch water pipes are arranged on the main water pipe. The water injection cooling mechanism carries out water cooling heat dissipation, so that heat accumulation of the device in long-time use is reduced, the service life of equipment is greatly prolonged, and the cost is saved; in addition, the invention also effectively avoids the generation of toxic gas due to higher temperature.

Among the above-mentioned scheme, need earlier through one-level crushing roller breakage, rethread second grade crushing roller is broken, can realize smashing through smashing the arbor at last, among the prior art, to some great article of intensity, for example shaped sand piece, stone etc., all need smash through similar multi-stage reduction's mode, the consumptive material that needs when this kind of multi-stage reduction's mode is made is many, high in manufacturing cost, and when moving, the big cost of power consumption is high, and the reducing mechanism among the prior art generally can not carry out corresponding regulation to the smashing of some hardness, the different article of intensity, application scope is little, the practicality is weak.

Disclosure of Invention

The invention aims to solve the technical problems of multi-stage crushing, more material consumption, high energy consumption, high cost, incapability of correspondingly adjusting the crushing of objects with different hardness and strength, small application range and weaker practicability.

The technical scheme of the invention is realized as follows: a molding sand crushing device comprises a mounting frame, a crushing device and a grinding device, wherein the crushing device and the grinding device are mounted on the mounting frame, the crushing device is connected with the grinding device in a supporting mode, the crushing device comprises a matching groove fixed on the mounting frame, a squeezing roller rotatably connected into the matching groove through a center shaft, and a first driving mechanism mounted on the mounting frame, a first filter screen is mounted in the middle of the inner bottom end of the matching groove, two vertical pendulum weights are correspondingly mounted at two ends of the center shaft, and the first driving mechanism drives the center shaft to rotate; the cooperation groove is the U type structure, the squeeze roll is close to the interior bottom of cooperation groove, and squeeze roll outer peripheral face and cooperation inslot wall cooperation use.

Furthermore, the inner bottom wall of the matching groove is provided with a first crushing cutter in an array mode, the length direction of the first crushing cutter is the same as the axial direction of the extrusion roller, the bottom of the outer circumferential surface of the extrusion roller is provided with a second crushing cutter in an array mode, the length direction of the second crushing cutter is the same as the axial direction of the extrusion roller, the first crushing cutter is matched with the second crushing cutter in use, and the cutter point of the first crushing cutter is opposite to the cutter point of the second crushing cutter.

Furthermore, the bottom of the two side walls of the matching groove is provided with a first cutter, the two side walls of the squeeze roller are provided with a second cutter, the first cutter and the second cutter are vertically arranged respectively, the first cutter and the second cutter are opposite in dislocation, the first cutter gradually widens from bottom to top on the side wall of the matching groove, the second cutter gradually widens from bottom to top on the side wall of the squeeze roller, and the first cutter and the second cutter are matched for use.

Furthermore, broken tooth I is distributed on the top of two side walls in the matching groove, a cone edge is arranged on the top of the extrusion roller, broken tooth II is distributed on two sides of the cone edge, the broken tooth I and the broken tooth II on the same side are matched for use, and the center of the cone edge, the center of the middle shaft I and the center of the pendulum bob are on the same vertical line.

Furthermore, two rod sleeves are correspondingly fixed at two ends of the first middle shaft, two connecting rods are correspondingly connected in the two rod sleeves in a sliding manner, and the two pendulum bob are correspondingly fixed at free ends of the two connecting rods; the top end of the rod sleeve is fixedly provided with a first motor, the top end in the rod sleeve is rotatably connected with a lead screw, a threaded hole is formed in the middle of the connecting rod, the lead screw and the threaded hole are in threaded connection at the same side, and an output shaft of the first motor at the same side is fixedly connected with one end of the lead screw.

Furthermore, a flywheel is fixed at one end of the first middle shaft.

Furthermore, the grinding device comprises a grinding barrel fixed on the mounting frame, a second filter screen fixed in the grinding barrel through a support rod, a rotating frame connected with the grinding barrel in a rotating mode through a second middle shaft, the rotating frame is arranged in the second filter screen, a grinding roller is connected to the rotating frame in a rotating mode, the grinding roller is arranged on the rotating frame in a circular array mode around the second middle shaft, a second driving mechanism is installed on the mounting frame and drives the second middle shaft to rotate, first grinding ridges are arranged on the inner side faces of the second filter screen, second grinding ridges are arranged on the outer circumferential face of the grinding roller in an array mode, the first grinding ridges and the second grinding ridges are matched and ground, the top end inlet of the second filter screen is communicated with the matching groove through the first filter screen, and a discharge hole is formed in the bottom end of the grinding barrel.

Furthermore, the distances from the grinding rollers in the circular array to the inner side surfaces of the second filter screens are sequentially reduced.

Furthermore, tool holders are circularly arrayed on the rotating frame around the second middle shaft, crushing tools are movably connected to the tool holders, and the crushing tools are matched with the first grinding edges for use.

Further, smash sword and grinding roller and set up in turn, circular array has the direction tile on the swivel mount, and is provided with a direction tile between adjacent crushing sword and the grinding roller, the direction tile cover is on grinding roller, the distance between the guide tile distolateral and the filter screen two equals with the distance between the grinding roller outer periphery that it covers to the filter screen two, and the angle of orientation grinding roller one side between two inner walls of guide tile and filter screen is less than sixty degrees.

The beneficial effects of the invention are summarized as follows: firstly, the pendulum bob has great inertia performance to provide great rotating force for the squeeze roll, so that the rotating force of the squeeze roll can be matched with a matching groove to gradually break and crush large-sized sand blocks, the pendulum bob swings mainly by means of self inertia when swinging, and a driving mechanism only needs to provide small force; secondly, the large molding sand block is firstly crushed by the first crushing cutter and the second crushing cutter, then is cut and crushed by the first cutting cutter and the second cutting cutter, and is crushed by the first crushing tooth and the second crushing tooth, and the molding sand block can be subjected to stepless crushing and crushing from large to small in the way; third, the motor drives the lead screw and rotates, thereby the lead screw makes the connecting rod produce relative slip in the rod cover at screw hole internal rotation motion, thereby the connecting rod drives the pendulum and rises or descend, realize the adjustment of the distance between pendulum to the axis one, can realize the inertial adjustment of pendulum through this kind of mode, after the pendulum risees, its swing inertia reduces, thereby make the rotatory extruded power of squeeze roll reduce, the used time of a reciprocating stroke shortens, be applicable to some hardness this moment, the crushing grinding of the less article of intensity, for example, some building stones of the caking of weing etc., when pendulum inertia is great, be applicable to the breakage of the great article of some intensity, for example, the type sand lump, stone etc., application scope is wide, therefore, the clothes hanger is strong in practicability.

Drawings

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

FIG. 2 is a schematic view of the internal structure of the mating groove of the present invention.

Fig. 3 is a cross-sectional view of the rod cover of the present invention.

FIG. 4 is a schematic view of the internal structure of the grinding barrel according to the present invention.

In the figure: 1 mounting rack, 2 smashing devices, 3 grinding devices, 4 matching grooves, 5 middle shafts I, 6 squeezing rollers, 7 driving mechanisms I, 8 filter screens I, 9 pendulums, 10 crushing cutters I, 11 crushing cutters II, 12 cutters I, 13 cutters II, 14 crushing teeth I, 15 conical edges, 16 crushing teeth II, 17 grinding barrels, 18 filter screens II, 19 middle shafts II, 20 rotating frames, 21 grinding rollers, 22 driving mechanisms II, 23 grinding edges I, 24 discharging ports, 25 cutter seats, 26 crushing cutters, 27 flywheels, 28 rod sleeves, 29 connecting rods, 30 motor I, 31 lead screws, 32 threaded holes, 33 guide tiles and 34 grinding edges II.

Detailed Description

In order to enhance the understanding of the present invention, a molding sand crushing apparatus according to the present invention will be described in further detail with reference to examples and drawings, which are provided for the purpose of illustration only and are not to be construed as limiting the scope of the present invention.

As shown in fig. 1 to 4, the molding sand crushing equipment comprises a mounting frame 1, a crushing device 2 and a grinding device 3 which are mounted on the mounting frame 1, wherein the crushing device 2 is connected with the grinding device 3, the crushing device 2 comprises a matching groove 4 fixed on the mounting frame 1, an extrusion roller 6 which is rotatably connected in the matching groove 4 through a first central shaft 5, a first driving mechanism 7 mounted on the mounting frame 1, a first filter screen 8 is mounted in the middle of the inner bottom end of the matching groove 4, two vertical pendulum weights 9 are correspondingly mounted at two ends of the first central shaft 5, and the first driving mechanism 7 drives the first central shaft 5 to rotate; the matching groove 4 is of a U-shaped structure, the squeeze roller 6 is close to the inner bottom of the matching groove 4, the outer peripheral surface of the squeeze roller 6 is matched with the inner wall of the matching groove 4 for use, the first drive mechanism 7 drives the first middle shaft 5 to rotate in a reciprocating mode, the first middle shaft 5 drives the two pendulums 9 to swing in a reciprocating mode, meanwhile, the first middle shaft 5 drives the squeeze roller 6 to deflect in a reciprocating mode, when the squeeze roller 6 deflects towards one side, the side face of the squeeze roller applies force to the molding sand block, the molding sand block enters a gap formed between the squeeze roller 6 and the inner wall of the matching groove 4 downwards, and the molding sand block is gradually crushed along with the continuous narrowing of the gap; the gap between the matching groove 4 and the squeeze roller 6 is gradually narrowed from top to bottom, the gap can squeeze and crush larger molding sand blocks through a wider gap at the upper part, the molding sand blocks fall into a narrower gap at the lower part after being squeezed and crushed, and the squeezed and crushed molding sand blocks are crushed again through the narrower gap at the moment, so that the molding sand blocks can be crushed and crushed steplessly from big to small, and compared with the mode that multistage crushing is completed by matching other devices in the prior art, the device has the advantages that fewer structural parts are used, fewer consumables are used, the integration degree is high, and the cost can be effectively reduced; when the action is initial, the driving mechanism I7 provides smaller power to drive the pendulum bob 9 to swing, then when the pendulum bob 9 swings to one side by means of inertia, the driving mechanism I7 only needs to provide smaller force to drive the central shaft I5 to correspondingly rotate along the direction of deflection of the pendulum bob 9, the pendulum bob 9 swings to the other side again after rotating to a certain height to one side, at the moment, the driving mechanism I7 only needs to provide smaller force to drive the central shaft I5 to correspondingly rotate along the direction of deflection of the pendulum bob 9 to the other side, the pendulum bob 9 can swing greatly by applying force in a reciprocating way, the great inertia performance of the pendulum bob 9 provides great rotating force for the squeeze roller 6, so that the rotating force of the squeeze roller 6 can be matched with the matching groove 4 to gradually break and crush large-sized sand blocks, when the pendulum bob 9 swings, the driving mechanism I7 mainly depends on self inertia, and only needs to provide smaller force, compared with other crushing devices in the prior art, the energy consumption is lower, so that the cost is further reduced; the inner bottom wall of the matching groove 4 is provided with a first crushing cutter 10 in an array mode, the length direction of the first crushing cutter 10 is the same as the axial direction of the extrusion roller 6, the bottom of the outer circumferential surface of the extrusion roller 6 is provided with a second crushing cutter 11 in an array mode, the length direction of the second crushing cutter 11 is the same as the axial direction of the extrusion roller 6, the first crushing cutter 10 is matched with the second crushing cutter 11 for use, a cutter point of the first crushing cutter 10 is opposite to the cutter point of the second crushing cutter 11, the cross section of the first crushing cutter 10 is triangular, the cross section of the second crushing cutter 11 is the same as that of the first crushing cutter 10, the distance between the extrusion roller 6 and the bottom of the matching groove 4 is small, and when small hard sand particles enter the small sand particles, the outer circumferential surface of the extrusion roller 6 and the inner bottom surface of the matching groove 4 are smooth relatively, the hard sand particles are prone to generate sliding friction in the gap or jump out of the gap, the situation that the sand cannot be crushed occurs, so that the first crushing knife 10 and the second crushing knife 11 are added, the friction force between the squeeze roller 6 and the inner surface of the matching groove 4 can be increased, small and hard sand particles can be retained and crushed, and meanwhile, the matching crushing mode is higher in efficiency, quicker in crushing and higher in crushing quality; the bottom of two side walls of the matching groove 4 is provided with a first cutting knife 12 in an array mode, two side walls of the extrusion roller 6 are provided with a second cutting knife 13 in an array mode, the first cutting knife 12 and the second cutting knife 13 are respectively arranged vertically, the first cutting knife 12 and the second cutting knife 13 are opposite in a staggered mode, the first cutting knife 12 gradually widens from bottom to top on the side walls of the matching groove 4, the second cutting knife 13 gradually widens from bottom to top on the side walls of the extrusion roller 6, the first cutting knife 12 and the second cutting knife 13 are matched for use, the cross section shape of the first cutting knife 12 and the cross section shape of the second cutting knife 13 are both triangular, when the outer circumferential surface of the extrusion roller 6 and the inner bottom surface of the matching groove 4 are relatively smooth, although extrusion crushing of a formed sand block can be completed through extrusion of a gap, the crushing amount in unit time is very small, a new side wall shearing mode can be formed through the added first cutting knife 12 and the second cutting knife 13, when a larger sand block is placed, the cutting edges of the first cutting knife 12 and the second cutting knife 13 can more quickly crush the formed sand block, therefore, the crushing efficiency in unit time is improved, and the mode that the first cutters 12 and the second cutters 13 are gradually widened from bottom to top is mainly used for pertinently crushing the molding sand blocks which are gradually enlarged from bottom to top; crushing teeth I14 are distributed on the tops of two side walls in the matching groove 4, a conical edge 15 is arranged on the top of the squeezing roller 6, crushing teeth II 16 are distributed on two sides of the conical edge 15, the crushing teeth I14 on the same side are matched with the crushing teeth II 16 for use, the center of the conical edge 15, the center of the middle shaft I5 and the center of the pendulum bob 9 are on the same vertical line, and the crushing teeth I14 and the crushing teeth II 16 are mainly used for finishing the crushing of a sand plate and a large block, so that the primary crushing is realized, and the subsequent downward gradual crushing is facilitated; two rod sleeves 28 are correspondingly fixed at two ends of the middle shaft I5, two connecting rods 29 are correspondingly connected in the two rod sleeves 28 in a sliding mode, and the two pendulum bob 9 is correspondingly fixed at free ends of the two connecting rods 29; the top end of the rod sleeve 28 is fixed with a motor I30, the top end in the rod sleeve 28 is rotatably connected with a screw rod 31, the middle of the connecting rod 29 is provided with a threaded hole 32, the screw rod 31 on the same side is in threaded connection with the threaded hole 32, the output shaft of the motor I30 on the same side is fixedly connected with one end of the screw rod 31, the motor I30 drives the screw rod 31 to rotate, the screw rod 31 rotates in the threaded hole 32 to enable the connecting rod 29 to slide relatively in the rod sleeve 28, so that the connecting rod 29 drives the pendulum bob 9 to ascend or descend, the adjustment of the distance between the pendulum bob 9 and the middle shaft I5 is realized, the inertia of the pendulum bob 9 can be adjusted in such a way, after the pendulum bob 9 ascends, the swinging inertia is reduced, the rotating and extruding force of the extruding roller 6 is reduced, the time of a reciprocating stroke is shortened, and the grinding device is suitable for grinding objects with small hardness and strength, such as damp lumps, when the pendulum bob 9 has large inertia, the pendulum bob is suitable for crushing some strong objects, such as molding sand blocks, stones and the like; a flywheel 27 is fixed at one end of the central shaft I5, and the flywheel 27 is mainly used for increasing the swinging inertia of the pendulum bob 9, so that the rotating extrusion force of the extrusion roller 6 is increased, and the impact force of the cone arris 15 is increased; the grinding device 3 comprises a grinding barrel 17 fixed on the mounting frame 1, a filter screen II 18 fixed in the grinding barrel 17 through a support rod, a rotating frame 20 rotatably connected with the grinding barrel 17 through a middle shaft II 19, the rotating frame 20 is arranged in the filter screen II 18, a grinding roller 21 is rotatably connected on the rotating frame 20, the grinding roller 21 is arranged on the rotating frame 20 around the middle shaft II 19 in a circular array, a driving mechanism II 22 is installed on the mounting frame 1, the driving mechanism II 22 drives the middle shaft II 19 to rotate, a grinding edge I23 is arranged on the inner side surface of the filter screen II 18, a grinding edge II 34 is arranged on the outer circumferential surface of the grinding roller 21 in an array, the grinding edge I23 is matched and ground with the grinding edge II 34, the top inlet of the filter screen II 18 is communicated with the inside of the matching groove 4 through a filter screen I8, a discharge port 24 is arranged at the bottom end of the grinding barrel 17, after the molding sand blocks are ground to a certain size by the grinding device 2, the filter screen I8 enters the filter screen II 18 along the through port, then the second driving mechanism 22 drives the second middle shaft 19 to rotate, the second middle shaft 19 drives the rotating frame 20 to rotate, and then the rotating frame 20 drives the arrayed grinding rollers 21 to rotate, the grinding ridges 23 on the grinding rollers 21 rotate are matched with the grinding ridges 34 to grind the molding sand particles, so that the recycling process requirement is met, after grinding to a certain thickness, the molding sand powder enters the grinding barrel 17 along the through holes on the second filter screen 18, and then is sent out from the discharge hole 24 at the bottom end of the grinding barrel 17, so that the molding sand grinding process is realized, the grinding rollers 21 can rotate by themselves while being driven to rotate by the rotating frame 20, the rotation of the grinding rollers can be matched with the grinding ridges 23 to improve the extrusion grinding efficiency, the crushing speed is higher, and the crushing efficiency is higher; the distances from the grinding rollers 21 in the circular arrays to the inner side surfaces of the second filter screens 18 are sequentially reduced, gaps with different sizes are formed between the different grinding rollers 21 and the second filter screens 18 in the mode, along with rotation, when the molding sand blocks pass through the gaps which are gradually reduced, the molding sand particles can be ground and thinned by the grinding rollers 21 one by one, the grinding efficiency can be improved, meanwhile, the condition that some smaller molding sand particles cannot be ground due to the fact that the grinding rollers 21 in the circular arrays and the second filter screens have the same distance can be prevented, some overlarge molding sand blocks are clamped in the gaps of the grinding rollers 21 to cause damage of the molding sand particles can be avoided, and the service life of the molding sand blocks can be effectively prolonged; a cutter seat 25 is circularly arrayed on the rotating frame 20 around the second middle shaft 19, a crushing cutter 26 is movably connected to the cutter seat 25, the crushing cutter 26 is matched with the first grinding edge 23, and the crushing cutter 26 is mainly used for crushing some high-strength molding sand blocks, so that the crushing cutter 26 and the grinding roller 21 form alternate crushing and grinding, and the crushing and grinding quality can be further improved; the grinding knives 26 and the grinding rollers 21 are alternately arranged, the guide shoes 33 are circularly arrayed on the rotating frame 20, the guide shoes 33 are arranged between the adjacent grinding knives 26 and the grinding rollers 21, the guide shoes 33 are covered on the grinding rollers 21, the distance between the end sides of the guide shoes 33 and the filter screen II 18 is equal to the distance between the outer circumferential surface of the covered grinding rollers 21 and the filter screen II 18, the angle between the guide shoes 33 and the inner wall of the filter screen II 18 towards one side of the grinding rollers 21 is less than sixty degrees, after the molding sand particles enter the filter screen II 18, the rotating frame 20 drives the grinding knives 26, the grinding rollers 21 and the guide shoes 33 to rotate, the smaller molding sand particles enter from the gap between the end sides of the guide shoes 33 and the filter screen II 18 and then enter the gap between the grinding rollers 21 and the filter screen II 18 to be ground, some larger molding sand particles cannot enter, and are intercepted by the guide shoes 33 and are guided to the rear side to be thrown between the grinding knives 26 and the grinding arris 23, the grinding roller 21 is ground by the grinding knife 26 in cooperation with the grinding edge I23, when the grinding roller is crushed to a position where the grinding roller can enter a gap between the end side of the guide tile 33 and the filter screen II 18, the grinding roller enters a position between the end side of the next guide tile 33 and the filter screen II 18 and is ground by the next grinding roller 21, the gap between the end side of the guide tile 33 and the filter screen II 18 mainly plays a role of screening, and when the size is larger, the grinding roller is thrown to the rear side by the next rotary guide tile 33 and is ground again, and screening type grinding in two steps is realized by the mode, and the mode can effectively protect the grinding roller 21 and ensure higher grinding efficiency; wherein: the first driving mechanism 7 and the second driving mechanism 22 are mainly power devices, the first driving mechanism 7 mainly provides power to drive the first middle shaft 5 to rotate, the second driving mechanism 22 mainly provides power to drive the second middle shaft 19 to rotate, the first driving mechanism 7 and the second driving mechanism 22 can adopt a mode that a motor which is commonly used in the prior art drives a shaft to rotate through a belt, or can adopt other power devices which can drive the first middle shaft 5 and the second middle shaft 19 to rotate, such as a speed reduction motor, a mode that the motor is matched with a gear set and the like, and belong to the known technical means.

Instructions for use: when the device is used, firstly, the first driving mechanism 7 and the second driving mechanism 22 of the device are connected with an external power supply, then the first driving mechanism 7 drives the first middle shaft 5 to rotate, the first middle shaft 5 drives the two pendulums 9 to swing in a reciprocating way, meanwhile, the first middle shaft 5 drives the extrusion roller 6 to deflect in a reciprocating way, the first driving mechanism 7 provides smaller power to drive the pendulums 9 to swing in a small amplitude, then when the pendulums 9 swing to one side by means of inertia, the first driving mechanism 7 only needs to provide smaller force to drive the first middle shaft 5 to rotate correspondingly along the swinging direction of the pendulums 9, after the pendulums 9 swing to one side to a certain height, kinetic energy is converted into gravitational potential energy, the pendulums 9 swing to the other side again, at the moment, the first driving mechanism 7 only needs to provide smaller force to drive the first middle shaft 5 to rotate correspondingly along the deflecting direction of the pendulums 9 to the other side, and the pendulum 9 can swing gradually by applying force in a reciprocating way, after the pendulum bob 9 swings greatly, the great inertia performance of the pendulum bob 9 provides great rotating force for the squeeze roller 6, and meanwhile, the rotating force is further increased through the clamping of the flywheel 27; at the moment, the molding sand blocks or other raw materials needing to be crushed are placed into the matching groove 4, when the pendulum bob 9 swings towards one side, the crushing teeth II 16 on the cone arris 15 are matched with the crushing teeth I14 to crush the placed molding sand blocks into small blocks, after crushing, the molding sand blocks are reduced to enter gaps between the squeezing roller 6 and the inner wall of the matching groove 4 below, then the squeezing roller 6 continues to rotate to enable the cutters I12 and II 13 to move to crush the molding sand blocks, the molding sand blocks which are reduced again after crushing continue to enter gaps between the squeezing roller 6 and the bottom of the matching groove 4 downwards, at the moment, the squeezing roller 6 continues to rotate in a reciprocating manner, so that the crushing cutters I10 and II 11 are matched to crush the molding sand particles again, after crushing, the molding sand particles which can pass through the filter screen I8 enter the filter screen II 18 along a channel, and the molding sand particles which cannot pass through the filter screen I8 continue to be crushed, the molding sand particles entering the second filter screen 18 can enter the guide tile 33 through a gap between the guide tile 33 and the inner side wall of the second filter screen 18, are ground and crushed by the grinding rib II 34 on the grinding roller 21 covered by the guide tile 33 and the grinding rib I23 on the second filter screen 18, and enter the outer grinding barrel 17 along the filtering holes of the second filter screen 18 after being ground to be smaller, and then are discharged from the discharge hole 24; some larger sand particles cannot enter, the sand particles are intercepted by the guide shoe 33 and thrown backwards between the crushing cutter 26 and the first grinding edge 23 along the back side of the guide shoe 33, the sand particles are crushed by the crushing cutter 26 in cooperation with the first grinding edge 23 until the sand particles can enter a gap between the end side of the guide shoe 33 and the second filter screen 18, the sand particles enter a gap between the end side of the next guide shoe 33 and the second filter screen 18 and are crushed by the next grinding roller 21, and the crushed sand powder passes through the second filter screen 18 to enter the grinding barrel 17 and is discharged from the discharge port 24, so that the whole crushing and grinding process can be completed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a molding sand crushing apparatus, includes mounting bracket (1), installs reducing mechanism (2) and grinder (3) on mounting bracket (1), reducing mechanism (2) are accepted with grinder (3), its characterized in that: the crushing device (2) comprises a matching groove (4) fixed on the mounting frame (1), an extrusion roller (6) rotatably connected into the matching groove (4) through a first middle shaft (5), and a first driving mechanism (7) mounted on the mounting frame (1), wherein a first filter screen (8) is mounted in the middle of the inner bottom end of the matching groove (4), two vertical pendulum weights (9) are correspondingly mounted at two ends of the first middle shaft (5), and the first driving mechanism (7) drives the first middle shaft (5) to rotate; cooperation groove (4) are U type structure, squeeze roll (6) are close to the interior bottom in cooperation groove (4), and squeeze roll (6) outer peripheral face and cooperation groove (4) inner wall cooperation use, the inside both sides wall top distribution in cooperation groove (4) has broken tooth one (14), the top of squeeze roll (6) is provided with awl arris (15), the both sides distribution of awl arris (15) has broken tooth two (16), and the broken tooth one (14) and the cooperation of broken tooth two (16) of same side use, the center of awl arris (15) center, axis one (5) center and pendulum (9) is on same vertical line.

2. The molding sand crushing apparatus according to claim 1, wherein: the inner bottom wall array of cooperation groove (4) has broken sword one (10), and broken sword one (10) length direction is the same with squeeze roll (6) axis direction, the array has broken sword two (11) in the outer periphery bottom of squeeze roll (6), and broken sword two (11) length direction is the same with squeeze roll (6) axis direction, broken sword one (10) uses with the cooperation of broken sword two (11), and the knife tip of broken sword one (10) and the relative setting of the knife tip of broken sword two (11).

3. The molding sand crushing apparatus according to claim 1, wherein: the utility model discloses a combination groove, including cooperation groove (4), the both sides wall bottom array of cooperation groove (4) has cutter (12), the both sides wall array of squeeze roll (6) has cutter two (13), cutter (12) and cutter two (13) vertical setting respectively, and cutter (12) and cutter two (13) dislocation are relative, cutter (12) are from upwards becoming widen gradually from the bottom at cooperation groove (4) lateral wall, cutter two (13) are from upwards becoming widen gradually from the bottom at squeeze roll (6) lateral wall, cutter (12) are used with the cooperation of cutter two (13).

4. A molding sand crushing apparatus according to any one of claims 1 to 3, characterized in that: two rod sleeves (28) are correspondingly fixed at two ends of the first middle shaft (5), two connecting rods (29) are correspondingly connected in the two rod sleeves (28) in a sliding mode, and the two pendulum weights (9) are correspondingly fixed at free ends of the two connecting rods (29); the motor I (30) is fixed on the top end of the rod sleeve (28), a lead screw (31) is rotatably connected to the top end in the rod sleeve (28), a threaded hole (32) is formed in the middle of the connecting rod (29), the lead screw (31) and the threaded hole (32) on the same side are in threaded connection, and an output shaft of the motor I (30) on the same side is fixedly connected with one end of the lead screw (31).

5. The molding sand crushing apparatus according to claim 1, wherein: and a flywheel (27) is fixed at one end of the middle shaft I (5).

6. The molding sand crushing apparatus according to claim 1, wherein: the grinding device (3) comprises a grinding barrel (17) fixed on a mounting frame (1), a second filter screen (18) fixed in the grinding barrel (17) through a support rod, a rotating frame (20) rotatably connected with the grinding barrel (17) through a second middle shaft (19), the rotating frame (20) is arranged in the second filter screen (18), a grinding roller (21) is rotatably connected onto the rotating frame (20), the grinding roller (21) is arranged on the rotating frame (20) in a circular array around the second middle shaft (19), a second driving mechanism (22) is installed on the mounting frame (1), the second driving mechanism (22) drives the second middle shaft (19) to rotate, a first grinding edge (23) is arranged on the inner side surface of the second filter screen (18), a second grinding edge (34) is arranged on the outer circumferential surface of the grinding roller (21), and the first grinding edge (23) and the second grinding edge (34) are matched for grinding, the top end inlet of the second filter screen (18) is communicated with the inside of the matching groove (4) through the first filter screen (8), and the bottom end of the grinding barrel (17) is provided with a discharge hole (24).

7. A moulding sand comminution apparatus as claimed in claim 6 in which: the distances from the grinding rollers (21) in the circular array to the inner side surface of the second filter screen (18) become smaller in sequence.

8. A moulding sand comminution apparatus as claimed in claim 7 in which: the rotating frame (20) is provided with tool apron (25) in a circular array around the second central shaft (19), the tool apron (25) is movably connected with a crushing knife (26), and the crushing knife (26) is matched with the first grinding edge (23) for use.

9. The molding sand crushing apparatus according to claim 8, wherein: smash sword (26) and grinding roller (21) and set up in turn, circular array has direction tile (33) on swivel mount (20), and is provided with one between adjacent crushing sword (26) and grinding roller (21) and leads tile (33), it covers on grinding roller (21) to lead tile (33), the distance between direction tile (33) distolateral and filter screen two (18) equals with the distance between grinding roller (21) outer periphery that it covered to filter screen two (18), and leads the angle of orientation grinding roller (21) one side between tile (33) and the filter screen two (18) inner wall and be less than sixty degrees.