A furan resin regenerated sand recovery device for casting

Abstract

The present invention discloses a furan resin regenerated sand recovery device for casting, and relates to the technical field of metal casting. The present invention comprises a feeding mechanism arranged on the right side of a conveying mechanism, comprising an installation box arranged outside the right end of a conveyor belt, a feeding assembly arranged inside the installation box, a limit assembly arranged inside the feeding assembly, and an adjustment assembly arranged at the bottom of the installation box; a dust removal mechanism arranged on the right side of the upper side of the installation box, comprising a material guide box fixed to the upper end of the right wall of the installation box and communicating with the interior of the installation box, a dust removal box fixed to the rear wall of the material guide box and communicating with the internal space of the material guide box, a filter plate arranged inside the dust removal box, and a fan blade arranged inside the dust removal box behind the filter plate corresponding to the dust removal box. The present invention realizes continuous and uniform feeding through the cooperation of a material barrel and a conveyor belt, and realizes anti-adhesion and agglomeration feeding of furan resin regenerated sand through the cooperation of a conveyor belt and a feeding box, and prevents dust from floating randomly and polluting the operating environment through fan blades and filter plates.

Description

Technical Field

[0001] The invention relates to the technical field of metal casting, in particular to a furan resin regenerated sand recovery device for casting. Background Art

[0002] Sand casting is a common metal casting method. It uses sand (such as furan resin), binder and other auxiliary materials to make a casting cavity. Liquid metal is poured into the casting cavity and the desired metal casting is obtained after cooling and solidification. Due to its wide application range, low mold cost and wide material selection, the method of using sand mold for metal casting is widely used in many industries such as automobiles, aviation, machinery, and construction.

[0003] In the process of using sand molds for metal casting, the metal casting needs to be vibrated and sanded for demoulding after cooling and forming. After demoulding, in order to improve the utilization rate of sand and reduce the waste of sand, the sand is usually regenerated to recover the sand, and then the regenerated sand is transported to the sand mixer for sand mixing;

[0004] At present, after the sand material is regenerated, due to the large specifications and high height of the sand mixer, a conveying device is often used to first convey the regenerated sand material to the feed end of the vertical conveying elevator, and the vertical conveying elevator vertically conveys the regenerated sand material to the sand mixer. However, the current conveying equipment has poor conveying uniformity when conveying the regenerated sand material, which may easily lead to too little regenerated sand material in the feed end of the vertical elevator and interrupt the feeding, or too much regenerated sand material in the feed end of the vertical elevator and cause the regenerated sand material to overflow from the feed end of the vertical elevator and spill, affecting the normal feeding of the regenerated sand material;

[0005] At the same time, at present, a tubular vertical conveying elevator is used to transport the regenerated sand to the interior of the sand mixing box. When the regenerated sand is transported by this elevator, the regenerated sand is easily adhered or even agglomerated due to the large extrusion force during the transportation process, which affects the mixing quality of the regenerated sand entering the sand mixer, resulting in the molding quality of the sand mold cavity, and finally resulting in a low qualified rate or even scrapped metal castings after cooling;

[0006] Furthermore, in the prior art, after the vertical conveyor elevator works to transport the regenerated sand to the sand mixer, during the period from when the regenerated sand leaves the discharge end of the vertical conveyor elevator to when the regenerated sand enters the sand mixer, the regenerated sand is in motion and dust will float in the operating environment, which not only pollutes the operating environment but is also detrimental to the health of the operator. Summary of the invention

[0007] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0008] In view of the poor uniformity of the current conveying equipment when conveying regenerated sand, which may easily lead to too little regenerated sand in the feed end of the vertical hoist and interrupt the feeding, or too much regenerated sand in the feed end of the vertical hoist and cause the regenerated sand to overflow the feed end of the vertical hoist and spill, affecting the normal feeding of the regenerated sand, a furan resin regenerated sand recovery device for casting is proposed.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions: a furan resin regenerated sand recovery device for casting, comprising: a conveying mechanism, including a material barrel, crushing rods arranged in a circular array on the lower side of the material barrel and a conveyor belt arranged below the material barrel; a feeding mechanism arranged on the right side of the conveying mechanism, including an installation box arranged outside the right end of the conveyor belt, a feeding assembly arranged inside the installation box, a limiting assembly arranged inside the feeding assembly and an adjusting assembly arranged at the bottom of the installation box, the feeding assembly including a driving rod horizontally arranged above and below the limiting assembly, a driving wheel fixed outside the front and rear sides of the driving rod, a conveyor belt composed of a plurality of movable plates outside the driving wheel, and a feeding box arranged outside the conveyor belt along the trajectory direction of the conveyor belt and fixed to the movable plate by bolts, and the front and rear sides of the movable plate are A tooth groove is opened, and the outer peripheral wall of the driving wheel corresponding to the position of the tooth groove is evenly provided with driving teeth matching with the tooth groove. A connecting rod with a circular cross-section is fixed to the end of the side walls on the front and rear sides of the movable plate opposite to the conveyor belt movement direction, and the external clearance of the connecting rod is matched with a connecting block fixedly connected to the movable plate adjacent to the end opposite to the conveyor belt movement direction by bolts, and the inner side wall of the connecting block is fixed with a boss which is inserted into the corresponding movable plate and matches with the gap of the corresponding movable plate; and a dust removal mechanism is arranged on the upper right side of the installation box, including a material guide box fixedly provided on the upper end of the right wall of the installation box and communicated with the interior of the installation box, a dust removal box fixed on the rear wall of the material guide box and communicated with the internal space of the material guide box, a filter plate arranged inside the dust removal box and a fan blade arranged inside the dust removal box behind the filter plate corresponding to the inside of the dust removal box.

[0010] As a preferred solution of the furan resin regenerated sand recovery device for casting of the present invention, a crushing motor is arranged at the middle position of the upper wall of the barrel, a fixing plate is fixed to the lower wall of the crushing motor, the fixing plate is fixedly connected to the barrel, a vertical rod is fixed on the power output shaft of the crushing motor, and the crushing rod is fixedly connected to the vertical rod.

[0011] As a preferred solution of the furan resin regenerated sand recovery device for casting of the present invention, wherein: limiting edges are fixed on the corresponding conveyor belts in front and rear of the bottom of the barrel, convex strips are fixed equidistantly on the outer surface of the conveyor belt between the two limiting edges, conveyor rollers are arranged at both left and right ends inside the conveyor belt, anti-skid edges are fixed equidistantly on the inner surface of the conveyor belt, anti-skid grooves matched with the anti-skid edges are opened on the outer peripheral wall of the conveyor roller, a support box is arranged inside the conveyor belt between the two conveyor rollers, side plates are fixed in front and rear of the support box, the conveyor rollers are rotatably connected to the side plates through bearings, a conveying motor is fixed to the side wall of the side plate at the position of the conveying roller, and the power output shaft of the conveying motor is fixedly connected to the corresponding conveying roller.

[0012] As a preferred solution of the furan resin regenerated sand recovery device for casting of the present invention, a U-shaped mounting plate is fixed to the outer side wall of the side plate, a hydraulic cylinder is fixed to the lower end of the U-shaped mounting plate, guide rods are fixed at the four corner positions of the lower wall of the U-shaped mounting plate, and a guide sleeve is provided in cooperation with the external clearance of the guide rod.

[0013] The beneficial effects of the furan resin regenerated sand recovery device for casting of the present invention are as follows: by pre-placing the furan resin regenerated sand into a material barrel, when the furan resin regenerated sand is horizontally conveyed, the crushing motor is operated to drive the crushing rod to rotate, and the furan resin regenerated sand in the material barrel is stirred to avoid the bridging phenomenon of the furan resin regenerated sand in the material barrel, so that the furan resin regenerated sand is continuously dropped onto the conveyor belt, and at the same time, a certain force is applied to the furan resin regenerated sand when the furan resin regenerated sand is stirred, so that the adhered furan resin regenerated sand can be separated, thereby achieving a certain anti-adhesion and anti-caking effect. Effect: After the furan resin regenerated sand falls on the conveyor belt, since the distance between the bottom of the barrel and the conveyor belt is fixed, when the conveyor belt moves, it will drive a certain amount of furan resin regenerated sand to move to the right, and continuously feed the feeding mechanism. Compared with the prior art, the device puts the furan resin regenerated sand into the barrel in advance, and uses a crushing motor to drive the crushing rod to rotate to prevent material blockage. At the same time, through the cooperation between the bottom of the barrel and the conveyor belt, uniform feeding of the feeding mechanism is achieved, avoiding abnormal feeding problems caused by uneven feeding, thereby ensuring continuous and uniform feeding of the feeding mechanism.

[0014] In view of the fact that at present, a tubular vertical conveying elevator is used to transport the regenerated sand to the inside of the sand mixing box, when this elevator is used to transport the regenerated sand, the regenerated sand is prone to adhesion or even agglomeration due to the large extrusion pressure during the transportation process, affecting the mixing quality of the regenerated sand entering the sand mixer, resulting in affecting the molding quality of the sand mold cavity, and ultimately causing the problem of low qualified rate or even scrapped metal castings after cooling. Therefore, further improvements are made to a furan resin regenerated sand recovery device for casting.

[0015] As a preferred solution of the furan resin regenerated sand recovery device for casting of the present invention, the driving rod located on the upper side is rotatably connected to the installation box through a bearing, a U-shaped plate is fixed to the rear wall of the installation box corresponding to the position of the driving rod located on the upper side, a driving motor is fixed to the rear wall of the U-shaped plate, and a power output shaft of the driving motor is fixedly connected to the driving rod located on the upper side.

[0016] As a preferred solution of a furan resin regenerated sand recovery device for casting of the present invention, the limiting component includes U-shaped guide bars arranged on the outside of the front and rear ends on the left and right sides of the conveyor belt, the movable plate is slidably connected to the U-shaped guide bar, the outer side walls of the U-shaped guide bar are fixed with limiting rods, the outer ends of the limiting rods pass through the installation box and match the gap of the installation box, inclined panels are fixed between the two U-shaped guide bars on the front side and between the two U-shaped guide bars on the rear side, the two inclined panels are symmetrically arranged, an elastic part is fixed between the two inclined panels, a U-shaped movable plate is slidably connected to the inclined surface on the lower side of the inclined panel, an electric push rod is fixed to the lower end of the U-shaped movable plate, a connecting plate is fixed to the lower end of the electric push rod, and the connecting plate is fixedly connected to the installation box.

[0017] As a preferred solution of the furan resin regenerated sand recovery device for casting of the present invention, the adjustment component includes a U-shaped adjustment plate arranged on the outside of the driving rod located on the lower side, a screw is arranged on the lower wall of the right end of the U-shaped adjustment plate, a horizontal plate fixedly connected to the installation box is arranged on the outside of the screw, the screw is threadedly connected to the horizontal plate, and an operating plate is fixed to the bottom of the screw; a movable groove is opened on the U-shaped adjustment plate corresponding to the position of the driving rod on the lower side, and movable blocks are slidably connected to the front and rear side walls of the installation box on the inner side of the movable groove corresponding to the installation box, the driving rod on the lower side is rotatably connected to the movable block through a bearing, and a round rod is arranged on the right side of the movable groove corresponding to the internal clearance of the U-shaped adjustment plate, and the round rod is fixedly connected to the installation box.

[0018] Another beneficial effect of the furan resin regenerated sand recovery device for casting of the present invention is: by using a driving motor to drive the driving rod to rotate, so that the driving wheel and the driving tooth rotate, under the cooperation of the tooth groove, the conveyor belt movement drives a number of feeding boxes to move continuously, at this time, the furan resin regenerated sand falling into the feeding box is thrown out from the uppermost end of the conveyor belt under the action of the movement of the feeding box and enters the material guide box, and finally enters the sand mixer. Compared with the prior art, the feeding box is driven to move by the conveyor belt, and there is no external force after the furan resin regenerated sand enters the feeding box. Therefore, the furan resin regenerated sand will not be subjected to a large extrusion force to produce adhesion or even agglomeration, which will affect the molding quality of the sand mold, thereby reducing the phenomenon of affecting the qualified rate of metal castings due to the molding quality of the sand mold.

[0019] In view of the problem that in the prior art, after the vertical conveyor elevator works to transport the regenerated sand to the sand mixer, during the period from the time the regenerated sand leaves the discharge end of the vertical conveyor elevator to the time the regenerated sand enters the sand mixer, the regenerated sand is in motion and dust will float in the operating environment, which not only pollutes the operating environment but is also detrimental to the health of the operators. Therefore, a further improvement is made to a furan resin regenerated sand recovery device for casting.

[0020] As a preferred scheme of the furan resin regenerated sand recovery device for casting of the present invention, wherein: an inclined plate is fixed to the lower left end of the material guide box, and its horizontal cross-section is inclined with the left side higher and the right side lower; a coarse filter screen is fixed to the rear wall inside the material guide box, and limit strips are provided on the front and rear edges of the filter plate, and the limit strips are fixedly connected to the dust removal box; a box cover is rotatably connected to the upper wall of the dust removal box at the position where the filter plate is located, and the free end of the box cover is detachably fixed to the dust removal box; an ash box communicating with the interior of the dust removal box is fixed to the lower wall of the dust removal box in front of the filter plate, and the lower wall of the ash box is rotatably connected to a rotating plate, and the free end of the rotating plate is detachably fixed to the ash storage box.

[0021] As a preferred embodiment of the furan resin regenerated sand recovery device for casting of the present invention, a rotating rod is fixed through the middle position of the fan blade, a vertical plate fixed to the dust removal box is arranged on the outside of the rotating rod corresponding to the rear of the fan blade, the rotating rod is rotatably connected to the vertical plate through a bearing, a small pulley is fixed on the outside of the rotating rod corresponding to the rear of the vertical plate, and a large pulley connected to the small pulley through a belt is fixed on the outside of the power output shaft of the driving motor.

[0022] As a preferred solution of the furan resin regenerated sand recovery device for casting of the present invention, a circular plate is fixed to the front end of the rotating rod, a mounting tube is fixed to the edge of the front wall of the circular plate, a spring is arranged inside the mounting tube, a U-shaped block is arranged in front of the spring corresponding to the internal clearance of the mounting tube, a roller in contact with the side wall of the filter plate is rotatably connected to the inside of the front end of the U-shaped block, convex ridges are evenly fixed to the outer peripheral wall of the roller, a protrusion is fixed to the rear end of the side wall of the U-shaped block, and a rectangular groove is opened at the position of the protrusion corresponding to the side wall of the mounting tube.

[0023] Another beneficial effect of the furan resin regenerated sand recovery device for casting of the present invention is: the driving motor is used to drive the large pulley to rotate, and the small pulley is caused to rotate rapidly under the action of the belt, thereby driving the fan blades to rotate, and the rotation of the fan blades causes the interior of the material guide box to be in a negative pressure state. At this time, the airflow carries the dust in the material guide box through the filter plate, and the dust is intercepted and filtered under the action of the filter plate, so as to prevent the dust from drifting to the outside and polluting the operating environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0025] Figure 1 The present invention is an overall structural diagram of a furan resin regenerated sand recovery device for casting.

[0026] Figure 2 The following is a diagram of the internal structure of the installation box.

[0027] Figure 3 This is a structural diagram of the conveying mechanism from the left.

[0028] Figure 4 It is a top view of the conveying mechanism.

[0029] Figure 5 for Figure 3 Exploded view of the structure of the middle part.

[0030] Figure 6 This is the structural diagram of the feeding mechanism.

[0031] Figure 7 for Figure 2 Partial structure diagram of .

[0032] Figure 8 An exploded view of part of the transmission assembly.

[0033] Fig. 9 This is a structural diagram of the limit assembly.

[0034] Fig.10 This is a top-down structural diagram of the dust removal mechanism.

[0035] Fig.11 This is the internal structure diagram of the dust removal box.

[0036] Fig.12 for Fig.11 Partial structure diagram.

[0037] Fig.13 for Fig.12 Decomposition structure diagram of .

[0038] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0039] 100- conveying mechanism, 101- crushing motor, 102- vertical rod, 103- barrel, 103a- leg, 103b- fixed plate, 104- conveyor belt, 104a- convex strip, 105- bottom plate, 105a- guide sleeve, 105b- hydraulic cylinder, 106- U-shaped mounting plate, 106a- guide rod, 107- crushing rod, 108- conveying roller, 108a- anti-skid groove, 109- anti-skid edge, 110- support box, 110a-side plate, 111-transmission motor, 112-limiting edge, 200-feeding mechanism, 201-driving motor, 202-installation box, 202a-U-shaped plate, 202b-round rod, 202c-cross plate, 202d-connecting plate, 203-U-shaped adjustment plate, 203a-movable groove, 204-screw, 204a-operating plate, 205-feeding box, 206-driving rod, 206a-movable block, 207-U-shaped Guide bar, 207a-limit rod, 207b-inclined plate, 208-movable plate, 208a-tooth groove, 208b-connecting rod, 209-U-shaped movable plate, 210-driving wheel, 210a-driving tooth, 211-connecting block, 211a-boss, 212-electric push rod, 213-elastic member, 300-dust removal mechanism, 301-material guide box, 301a-coarse filter screen, 301b-inclined plate, 302-large pulley, 30 3-belt, 304-dust removal box, 304a-box cover, 304b-filter plate, 304c-limiting strip, 304d-vertical plate, 305-rotating rod, 305a-small pulley, 305c-circular plate, 306-ash storage box, 306a-rotating plate, 307-fan blades, 308-mounting tube, 308a-rectangular groove, 309-U-shaped block, 309a-protrusion, 310-roller, 310a-convex ridge, 311-spring. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0042] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0043] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example 1

[0044] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , which is the first embodiment of the present invention, provides a furan resin regenerated sand recovery device for casting, by putting the furan resin regenerated sand into the barrel 103, and rotating the crushing rod 107 to move the furan resin regenerated sand to prevent clogging, and also through the cooperation between the bottom of the barrel 103 and the conveyor belt 104, the effect of continuous and uniform feeding to the feeding mechanism 200 is achieved.

[0045] Specifically, it includes a conveying mechanism 100, including a barrel 103, crushing rods 107 arranged in a circular array on the lower side of the barrel 103, and a conveyor belt 104 arranged below the barrel 103. The horizontal overlapping portion of the bottom of the barrel 103 and the limiting edge 112 is preferably rectangular in shape to adapt to the two limiting edges 112, and the portion of the barrel 103 corresponding to the height of the crushing rod 107 is preferably circular in shape to adapt to the rotation of the crushing rod 107; a feeding mechanism 200 arranged on the right side of the conveying mechanism 100, including an installation box 202 arranged outside the right end of the conveyor belt 104, a feeding assembly arranged inside the installation box 202, a limiting assembly arranged inside the feeding assembly, and an adjustment assembly arranged at the bottom of the installation box 202. The installation box 202 can be The box bodies of the same or different heights are assembled, and a maintenance slot and a maintenance door are provided on one side of each box body; the dust removal mechanism 300 arranged on the upper right side of the installation box 202 comprises a material guide box 301 fixedly arranged on the upper end of the right wall of the installation box 202 and communicating with the interior of the installation box 202, a dust removal box 304 fixed on the rear wall of the material guide box 301 and communicating with the internal space of the material guide box 301, a filter plate 304b arranged inside the dust removal box 304 and a fan blade 307 arranged inside the dust removal box 304 at the rear of the filter plate 304b corresponding to the inside of the dust removal box 304, the lower side of the material guide box 301 is open and located above the sand mixer, so that the furan resin regenerated sand can fall into the sand mixer, and the filter plate 304b can adopt an activated carbon filter plate, which is compatible with the filtering effect of dust and odor.

[0046] Read in detail Figure 3 and Figure 4As shown, a pulverizing motor 101 is arranged at the middle position of the upper wall of the material barrel 103, which is used to rotate the pulverizing rod 107, a fixing plate 103b is fixed to the lower wall of the pulverizing motor 101, the fixing plate 103b is fixedly connected to the material barrel 103, a vertical rod 102 is fixed to the power output shaft of the pulverizing motor 101, the pulverizing rod 107 is fixedly connected to the vertical rod 102, and legs 103a are evenly fixed to the lower wall of the material barrel 103, which are used to support the material barrel 103, and a bottom plate 105 is fixed to the lower end of the legs 103a, and the bottom plate 105 can be fixed to the ground;

[0047] When the above arrangement is used, the furan resin regenerated sand to be transported is placed in the material barrel 103. Before the furan resin regenerated sand falls onto the conveyor belt 104, the crushing motor 101 is operated to drive the vertical rod 102 to rotate, so that the crushing rod 107 rotates and stirs the furan resin regenerated sand, so that the adhered or agglomerated furan resin regenerated sand is separated, which can have a certain anti-adhesion and anti-agglomeration effect. At the same time, since the furan resin regenerated sand is in a moving state when the crushing rod 107 rotates, it can avoid the bridging phenomenon in the material barrel 103 when the furan resin regenerated sand moves downward and causes blockage.

[0048] Read in detail Figure 3 and Figure 5As shown, limiting edges 112 are fixed on the conveyor belt 104 corresponding to the front and rear of the bottom of the barrel 103. The setting of the limiting edges 112 can, on the one hand, prevent the distance between the bottom of the barrel 103 and the upper wall of the conveyor belt 104 from being too large, which may cause excessive leakage of the furan resin regenerated sand between the barrel 103 and the conveyor belt 104. On the other hand, it can prevent the conveyor belt 104 from running off the track during movement. The outer surface of the corresponding conveyor belt 104 between the two limiting edges 112 is equidistantly fixed with convex strips 104a. The setting of the convex strips 104a can achieve the purpose of driving the furan resin regenerated sand to follow the conveyor belt 104 when the conveyor belt 104 moves, and prevent the furan resin regenerated sand from moving to the right and passing through the right side of the lower wall of the barrel 103 due to the friction between the right side of the lower wall of the barrel 103. The high The height is higher than the height of the upper wall of the convex strip 104a located on the upper side to avoid motion interference. The convex strip 104a, the limiting rib 112 and the anti-skid rib 109 are all made of the same material as the conveyor belt 104. Conveying rollers 108 are arranged at both ends of the conveyor belt 104. When the conveying roller 108 rotates, the conveyor belt 104 is in a synchronous motion state. At the same time, the upper side of the conveyor belt 104 moves to the right to realize the rightward conveying of the furan resin regenerated sand to the installation box 202. The inner surface of the conveyor belt 104 is equidistantly fixed with anti-skid ribs 109. The anti-skid ribs 109 are equidistantly distributed along the inner side wall of the conveyor belt 104. The outer peripheral wall of the conveyor roller 108 is provided with an anti-skid groove 108a adapted to the anti-skid rib 109. The cooperation of the anti-skid rib 109 and the anti-skid groove 108a can avoid the phenomenon of slipping between the conveyor belt 104 and the conveyor roller 108 due to insufficient friction.

[0049] A support box 110 is provided inside the corresponding conveyor belt 104 between the two conveyor rollers 108. According to the movement trajectory of the conveyor belt 104, in order to avoid the corners of the support box 110 hindering the movement of the anti-skid edge 109, the upper left end and the lower right end of the support box 110 are chamfered. At the same time, the interior of the support box 110 is hollow to reduce the dead weight of the conveying mechanism 100. Side plates 110a are fixed in front and rear of the support box 110. The conveyor rollers 108 are rotatably connected to the side plates 110a through bearings. A conveying motor 111 is fixed to the side wall of the side plate 110a at the position of the conveyor rollers 108, which is used to drive the conveyor rollers 108 to rotate. At the same time, the conveying motor 111 adopts an adjustable speed motor, and the power output shaft of the conveying motor 111 is fixedly connected to the corresponding conveyor rollers 108.

[0050] With the above arrangement, when the conveying motor 111 works and drives the conveying roller 108 to rotate, the friction between the anti-skid edge 109 and the anti-skid groove 108a, and between the conveying roller 108 and the conveyor belt 104 drives the upper side of the conveyor belt 104 to move continuously and evenly to the right, thereby driving the furan resin regenerated sand that falls onto the conveyor belt 104 to move to the right and finally enter the loading box 205 in the installation box 202.

[0051] Read in detail Figure 3 As shown, a U-shaped mounting plate 106 is fixed to the outer side wall of the side plate 110a, a hydraulic cylinder 105b is fixed to the lower end of the U-shaped mounting plate 106, and guide rods 106a are fixed at the four corners of the lower wall of the U-shaped mounting plate 106. A guide sleeve 105a is provided in the outer clearance of the guide rod 106a. The guide sleeve 105a and the hydraulic cylinder 105b are fixedly connected to the bottom plate 105. The cooperation between the guide rod 106a and the guide sleeve 105a can prevent the U-shaped mounting plate 106 from tilting.

[0052] According to the above arrangement, when the conveyor belt 104 is damaged and needs to be replaced, the hydraulic cylinder 105b is controlled to retract to drive the U-shaped mounting plate 106 to descend, thereby causing the conveyor belt 104 to descend, so as to facilitate maintenance and replacement of the conveyor belt 104. The height of the conveyor belt 104 is changed by the operation of the hydraulic cylinder 105b, and the distance between the conveyor belt 104 and the barrel 103 can also be adjusted, so as to adjust the conveying speed of the furan resin regenerated sand. Example 2

[0053] Reference Figure 1 , Figure 2 , Figure 6 , Figure 7 , Figure 8 and Fig. 9 , which is the second embodiment of the present invention. This embodiment is based on the previous embodiment. The difference from the previous embodiment is that this embodiment drives the driving wheel 210 to rotate through the driving motor 201, and under the cooperation of the driving teeth 210a and the tooth grooves 208a, drives the conveyor belt composed of the movable plate 208 to move, and finally drives the loading box 205 to move, so that the furan resin regenerated sand is fed into the sand mixer without being subjected to external extrusion pressure, thereby avoiding the furan resin regenerated sand from sticking or even agglomerating due to the large extrusion pressure during the transportation process.

[0054] For details, please read Figure 6 , Figure 7 and Figure 8As shown, the loading assembly includes a driving rod 206 horizontally arranged above and below the limiting assembly, a driving wheel 210 fixed externally on the front and rear sides of the driving rod 206, a conveyor belt composed of a plurality of movable plates 208 on the outside of the driving wheel 210, and a loading box 205 arranged on the outside of the conveyor belt along the trajectory direction of the conveyor belt and fixed to the movable plate 208 by bolts. The opening direction of the loading box 205 is consistent with the movement direction of the conveyor belt. Through this arrangement, the loading box 205 can receive the furan resin regenerated sand transported by the conveying mechanism 100. When the conveyor belt moves, the right side of the conveyor belt moves downward, and the left side of the conveyor belt moves upward. In order to ensure the smooth progress of the movement, one end of the movable plate 208 in the opposite direction of the movement trajectory of the conveyor belt is arc-shaped to avoid movement interference. Tooth grooves 208a are provided on the front and rear sides of the movable plate 208. The position of the tooth groove 208a corresponds to the outer side of the driving wheel 210. The peripheral wall is evenly provided with driving teeth 210a that match the tooth grooves 208a. The cooperation between the driving teeth 210a and the tooth grooves 208a can make the conveyor belt move. The ends of the side walls on the front and rear sides of the movable plate 208 opposite to the conveyor belt movement direction are fixed with connecting rods 208b with a circular cross-section. The external clearance of the connecting rod 208b is matched with a connecting block 211 that is fixedly connected to the movable plate 208 adjacent to the end opposite to the conveyor belt movement direction by bolts. The cooperation between the connecting rod 208b and the connecting block 211 makes the corresponding two movable plates 208 connected and relatively rotatable. The inner side wall of the connecting block 211 is fixed with a boss 211a that is inserted into the corresponding movable plate 208 and matches the clearance of the corresponding movable plate 208. The insertion of the boss 211a into the corresponding movable plate 208 can avoid the phenomenon of relative rotation between the connecting block 211 and the corresponding movable plate 208 due to insufficient connection stability.

[0055] The driving rod 206 on the upper side is rotatably connected to the installation box 202 through a bearing, and a U-shaped plate 202a is fixed to the rear wall of the installation box 202 at the position where the driving rod 206 on the upper side is located, and a driving motor 201 is fixed to the rear wall of the U-shaped plate 202a. The driving motor 201 can adopt a speed-regulating motor so as to adjust the feeding speed according to demand, and the power output shaft of the driving motor 201 is fixedly connected to the driving rod 206 on the upper side;

[0056] The above arrangement, by making the driving motor 201 work to drive the driving rod 206 located on the upper side to rotate, causes the two driving wheels 210 located on the upper side to rotate, and under the cooperation of the corresponding driving teeth 210a and the tooth grooves 208a and the driving rod 206, the driving wheel 210, the driving teeth 210a and the tooth grooves 208a located on the lower side, the conveyor belt formed by the movable plate 208 moves, and finally drives the loading box 205 to receive the furan resin regenerated sand and transport it upward. When the loading box 205 moves to bypass the top of the conveyor belt, since the top of the conveyor belt is arc-shaped, the furan resin regenerated sand in the loading box 205 bypassing the top of the conveyor belt will enter the guide box 301 under the action of inertia to realize the separation of the furan resin regenerated sand from the loading box 205, and finally the furan resin regenerated sand falls into the interior of the sand mixer.

[0057] Read in detail Figure 7 and Fig. 9 As shown, the limiting assembly includes a U-shaped guide bar 207 arranged on the outside of the front and rear ends of the left and right sides of the conveyor belt. The setting of the U-shaped guide bar 207 can prevent the movable plate 208 in the conveyor belt from shaking in the horizontal direction during movement. In order to avoid the interference between the movable plate 208 in the conveyor belt and the U-shaped guide bar 207 during movement, the upper and lower ends of the U-shaped guide bar 207 are chamfered, the movable plate 208 is slidably connected to the U-shaped guide bar 207, and the outer side walls of the U-shaped guide bar 207 are fixed with limiting rods 207a, the outer ends of the limiting rods 207a pass through the installation box 202 and are gap-matched with the installation box 202. The setting of the limiting rods 207a makes the U-shaped guide bar 207 only Move forward and backward in the horizontal direction, an inclined panel 207b is fixed between the two U-shaped guide strips 207 on the front side and between the two U-shaped guide strips 207 on the rear side, the two inclined panels 207b are symmetrically arranged, an elastic member 213 is fixed between the two inclined panels 207b to provide outward support for the two inclined panels 207b, a U-shaped moving plate 209 is slidably connected to the inclined surface on the lower side of the inclined panel 207b, the upper end of the U-shaped moving plate 209 is in contact with the inclined panel 207b, an electric push rod 212 is fixed to the lower end of the U-shaped moving plate 209, a connecting plate 202d is fixed to the lower end of the electric push rod 212, and the connecting plate 202d is fixedly connected to the installation box 202;

[0058] The above arrangement controls the extension and retraction of the electric push rod 212 to drive the U-shaped movable plate 209 to move up and down accordingly. Under the action of the elastic member 213, the inclined plate 207b moves inward or outward accordingly, driving the U-shaped guide bar 207 to move inward or outward accordingly. In this way, when the conveyor belt is maintained, the U-shaped guide bar 207 is moved outward to break away from the guiding effect on the conveyor belt. After the maintenance is completed, the U-shaped guide bar 207 is moved inward to achieve the guiding effect on the conveyor belt.

[0059] Read in detail Figure 6 and Figure 7 As shown, the adjustment component includes a U-shaped adjustment plate 203 arranged outside the driving rod 206 located at the lower side, a screw 204 is arranged on the lower wall of the right end of the U-shaped adjustment plate 203, the upper end of the screw 204 is in contact with the U-shaped adjustment plate 203, and a transverse plate 202c fixedly connected to the installation box 202 is arranged outside the screw 204, the screw 204 is threadedly connected to the transverse plate 202c, and the screw 204 moves in the up and down directions when it rotates, and the movement is used to apply a force to the U-shaped adjustment plate 203 to adjust the tightness of the driving wheel 210 located at the lower side, and an operating plate 204a is fixed to the bottom of the screw 204, and the screw 204 can be rotated by manually controlling the operating plate 204a to rotate;

[0060] A movable groove 203a is provided on the U-shaped adjustment plate 203 corresponding to the position of the driving rod 206 located at the lower side, providing a movable space for the driving rod 206 located at the lower side, and movable blocks 206a are slidably connected to the front and rear side walls of the installation box 202 on the inner side of the movable groove 203a, and the driving rod 206 located at the lower side is rotatably connected to the movable block 206a through a bearing, and a round rod 202b is provided on the right side of the movable groove 203a corresponding to the internal clearance of the U-shaped adjustment plate 203, with the round rod 202b as the rotation axis, when the right end of the U-shaped adjustment plate 203 rises, the left end of the U-shaped adjustment plate 203 drops, and the round rod 202b is fixedly connected to the installation box 202;

[0061] With the above arrangement, when adjusting the driving wheel 210 located on the lower side, according to the adjustment needs, the control operation plate 204a is rotated to drive the screw 204 to rotate, so that the upper end of the screw 204 abuts against the lower wall of the right end of the U-shaped adjustment plate 203, and then under the action of the round rod 202b, the left end of the U-shaped adjustment plate 203 moves downward until the driving wheel 210 located on the lower side applies a suitable force to the conveyor belt. Example 3

[0062] Reference Figure 1 , Figure 2 , Fig.10 , Fig.11 , Fig.12 and Fig.13 , which is the third embodiment of the present invention. This embodiment is based on any of the above embodiments, and is different from the above embodiments in that: the large pulley 302 is driven to rotate by the driving motor 201, and the small pulley 305a is rotated under the action of the belt 303, so as to finally achieve the purpose of making the fan blade 307 rotate quickly, and the rotation of the fan blade 307 is used to generate negative pressure inside the guide box 301, so that the dust is sucked into the dust removal box 304, and the dust is filtered by the filter plate 304b, so as to achieve the effect of preventing the dust from drifting to the external operating environment.

[0063] For details, please read Fig.10 and Fig.11 As shown, an inclined plate 301b is fixed to the lower left end of the material guide box 301, and its horizontal cross-section is inclined with the left side higher and the right side lower. A coarse filter screen 301a is fixed to the rear wall inside the material guide box 301. The filtering specification of the coarse filter screen 301a is smaller than the specification of the furan resin regenerated sand, and is used to block the furan resin regenerated sand to prevent the furan resin regenerated sand from entering the dust removal box 304. Limiting strips 304c are provided on the front and rear edges of the filter plate 304b, which are used to clamp and fix the filter plate 304b. The limiting strips 304c are fixedly connected to the dust removal box 304. The filter plate 304b is rotatably connected to the upper wall of the dust removal box 304 at the position corresponding to the filter plate 304. The free end of the box cover 304a is detachably fixed to the dust removal box 304, and a maintenance groove is provided at the position corresponding to the upper wall of the dust removal box 304 at the position of the box cover 304a.

[0064] A dust box 306 communicating with the interior of the dust box 304 is fixed in front of the filter plate 304b and corresponds to the lower wall of the dust box 304. A through slot is provided at the location of the dust box 306 and corresponds to the lower wall of the dust box 304. Heavier dust can enter the interior of the dust box 306 through the through slot. A rotating plate 306a is rotatably connected to the lower wall of the dust box 306. The free end of the rotating plate 306a is detachably fixed to the dust box 306.

[0065] With the above arrangement, the filter plate 304b can be cleaned and replaced by opening the box cover 304a to expose the maintenance slot, and the dust collected in the dust box 306 can be discharged by rotating the rotating plate 306a.

[0066] Read in detail Fig.11 , Fig.12 and Fig.13 As shown, a rotating rod 305 is fixed through the middle position of the fan blade 307, and a vertical plate 304d fixed to the dust removal box 304 is arranged at the rear of the fan blade 307 corresponding to the outside of the rotating rod 305, and the rotating rod 305 is rotatably connected to the vertical plate 304d through a bearing, and a small pulley 305a is fixed to the outside of the rotating rod 305 corresponding to the rear of the vertical plate 304d, and a large pulley 302 connected to the small pulley 305a through a belt 303 is fixed to the outside of the power output shaft of the driving motor 201;

[0067] A circular plate 305c is fixed to the front end of the rotating rod 305, and a mounting tube 308 is fixed to the edge of the front wall of the circular plate 305c. A spring 311 is arranged inside the mounting tube 308. The arrangement of the spring 311 prevents the convex ridge 310a from exerting a large force on the filter plate 304b and damaging the filter plate 304b when the roller 310 rotates. A U-shaped block 309 is arranged in front of the spring 311 to cooperate with the internal clearance of the mounting tube 308. The front end of the U-shaped block 309 is internally connected to the roller 310 in contact with the side wall of the filter plate 304b. The outer peripheral wall of the roller 310 is evenly fixed with convex ridges 310a. The rear end of the side wall of the U-shaped block 309 is fixed with a protrusion 309a. A rectangular groove 308a is opened at the position of the protrusion 309a corresponding to the side wall of the mounting tube 308. The cooperation of the protrusion 309a and the rectangular groove 308a can prevent the U-shaped block 309 from being separated from the mounting tube 308.

[0068] With the above arrangement, when the driving motor 201 is working, it drives the large pulley 302 to rotate, and under the action of the belt 303, it drives the small pulley 305a to rotate quickly, so that the rotating rod 305 rotates, driving the fan blades 307 and the circular plate 305c to rotate. When the fan blades 307 rotate, the interior of the guide box 301 is in a negative pressure state, and the dust is sucked into the dust removal box 304. The dust is filtered by the filter plate 304b to prevent the dust from being randomly dispersed into the operating environment.

[0069] At the same time, when the circular plate 305c rotates, the mounting tube 308, the U-shaped block 309 and the roller 310 rotate synchronously with the circular plate 305c, and the ridges 310a and the rollers 310 act alternately on the filter plate 304b under the action of the spring 311, so that the filter plate 304b vibrates, and the dust adhered to the front wall of the filter plate 304b is shaken off, thereby reducing the clogging of the filter plate 304b due to dust.

[0070] In addition, the electrical appliances in the furan resin regenerated sand recovery device for casting are all electrically connected to the controller through conductive wires, and the controller is electrically connected to the external power supply through conductive wires. At the same time, all electrical appliances in the furan resin regenerated sand recovery device for casting are existing technologies and are available in the market or by private customization, so there is no limitation on their models.

[0071] Importantly, it should be noted that the construction and arrangement of the present application shown in a number of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, changes in orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete element may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to an alternative embodiment. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structure. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0072] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment may not be described (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those features that are not relevant to implementing the invention).

[0073] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A furan resin regenerated sand recovery device for casting, characterized in that: include, The conveying mechanism (100) comprises a material barrel (103), crushing rods (107) arranged in a circular array on the lower side of the material barrel (103), and a conveying belt (104) arranged below the material barrel (103); The feeding mechanism (200) arranged on the right side of the conveying mechanism (100) comprises an installation box (202) arranged outside the right end of the conveying belt (104), a feeding assembly arranged inside the installation box (202), a limiting assembly arranged inside the feeding assembly and an adjusting assembly arranged at the bottom of the installation box (202), the feeding assembly comprising a driving rod (206) arranged horizontally above and below the limiting assembly, a driving wheel (210) fixed outside the front and rear sides of the driving rod (206), a conveyor belt composed of a plurality of movable plates (208) outside the driving wheel (210), and a feeding box (205) arranged outside the conveyor belt along the track direction of the conveyor belt and fixed to the movable plate (208) by bolts, the movable plate (208) having openings on both the front and rear sides. A tooth groove (208a) is provided, and driving teeth (210a) matching with the tooth groove (208a) are evenly arranged on the outer peripheral wall of the driving wheel (210) at the position where the tooth groove (208a) is located, and the ends of the side walls on the front and rear sides of the movable plate (208) opposite to the conveyor belt movement direction are fixed with connecting rods (208b) with a circular cross section, and the outer clearance of the connecting rod (208b) is provided with a connecting block (211) fixedly connected to the movable plate (208) adjacent to the end opposite to the conveyor belt movement direction through bolts, and the inner side wall of the connecting block (211) is fixed with a boss (211a) inserted into the corresponding movable plate (208) and gap-matched with the corresponding movable plate (208); and, The dust removal mechanism (300) is arranged on the upper right side of the installation box (202), comprising a material guide box (301) fixedly arranged on the upper end of the right wall of the installation box (202) and communicating with the interior of the installation box (202), a dust removal box (304) fixed to the rear wall of the material guide box (301) and communicating with the internal space of the material guide box (301), a filter plate (304b) arranged inside the dust removal box (304), and a fan blade (307) arranged behind the filter plate (304b) and corresponding to the interior of the dust removal box (304).

2. A furan resin regenerated sand recovery device for casting as claimed in claim 1, characterized in that: A pulverizing motor (101) is arranged at the middle position of the upper wall of the material barrel (103); a fixing plate (103b) is fixed to the lower wall of the pulverizing motor (101); the fixing plate (103b) is fixedly connected to the material barrel (103); a vertical rod (102) is fixed to the power output shaft of the pulverizing motor (101); and the pulverizing rod (107) is fixedly connected to the vertical rod (102).

3. A furan resin regenerated sand recovery device for casting as claimed in claim 2, characterized in that: Limiting edges (112) are fixed on the conveyor belt (104) corresponding to the front and rear of the bottom of the barrel (103), and convex strips (104a) are fixed equidistantly on the outer surface of the conveyor belt (104) between the two limiting edges (112), and conveying rollers (108) are arranged at both left and right ends inside the conveyor belt (104), and anti-skid edges (109) are fixed equidistantly on the inner surface of the conveyor belt (104), and the outer peripheral wall of the conveyor roller (108) is provided with an anti-skid groove (109) adapted to the anti-skid edge (109). 8a), a support box (110) is arranged inside the conveyor belt (104) between the two conveyor rollers (108), and side plates (110a) are fixed in front and rear of the support box (110). The conveyor rollers (108) are rotatably connected to the side plates (110a) via bearings. A conveying motor (111) is fixed to the side wall of the side plate (110a) at the position where the conveyor rollers (108) are located, and the power output shaft of the conveying motor (111) is fixedly connected to the corresponding conveyor roller (108).

4. A furan resin regenerated sand recovery device for casting as claimed in claim 3, characterized in that: A U-shaped mounting plate (106) is fixed to the outer side wall of the side plate (110a), a hydraulic cylinder (105b) is fixed to the lower end of the U-shaped mounting plate (106), guide rods (106a) are fixed at the four corner positions of the lower wall of the U-shaped mounting plate (106), and a guide sleeve (105a) is provided in a clearance fit outside the guide rod (106a).

5. A furan resin regenerated sand recovery device for casting as claimed in claim 1, characterized in that: The driving rod (206) located on the upper side is rotatably connected to the installation box (202) via a bearing; a U-shaped plate (202a) is fixed to the rear wall of the installation box (202) at the position where the driving rod (206) located on the upper side is located; a driving motor (201) is fixed to the rear wall of the U-shaped plate (202a); and a power output shaft of the driving motor (201) is fixedly connected to the driving rod (206) located on the upper side.

6. A furan resin regenerated sand recovery device for casting as claimed in claim 5, characterized in that: The limiting assembly comprises U-shaped guide strips (207) arranged outside the front and rear ends of the left and right sides of the conveyor belt, the movable plate (208) is slidably connected to the U-shaped guide strips (207), the outer side walls of the U-shaped guide strips (207) are fixed with limiting rods (207a), the outer ends of the limiting rods (207a) pass through the installation box (202) and are gap-matched with the installation box (202), and the two U-shaped guide strips (207) located at the front side and the two U-shaped guide strips (207) located at the rear side are fixed with limiting rods (207a) at the outer side walls of the U-shaped guide strips (207) are fixed with limiting rods (207a) at the outer ends of the limiting rods (207a) pass through the installation box (202) and are gap-matched with the installation box (202). An inclined panel (207b) is fixed between the two inclined panels (207b), the two inclined panels (207b) are symmetrically arranged, an elastic member (213) is fixed between the two inclined panels (207b), a U-shaped movable plate (209) is slidably connected to the inclined surface on the lower side of the inclined panel (207b), an electric push rod (212) is fixed to the lower end of the U-shaped movable plate (209), a connecting plate (202d) is fixed to the lower end of the electric push rod (212), and the connecting plate (202d) is fixedly connected to the installation box (202).

7. A furan resin regenerated sand recovery device for casting as claimed in claim 6, characterized in that: The adjustment assembly comprises a U-shaped adjustment plate (203) arranged outside the driving rod (206) located at the lower side, a screw rod (204) is arranged on the lower wall of the right end of the U-shaped adjustment plate (203), a horizontal plate (202c) fixedly connected to the installation box (202) is arranged outside the screw rod (204), the screw rod (204) is threadedly connected to the horizontal plate (202c), and an operating plate (204a) is fixed to the bottom of the screw rod (204); A movable groove (203a) is provided on the U-shaped adjustment plate (203) corresponding to the position of the driving rod (206) located on the lower side, and movable blocks (206a) are slidably connected to the front and rear side walls of the installation box (202) on the inner side of the movable groove (203a), and the driving rod (206) located on the lower side is rotatably connected to the movable block (206a) via a bearing, and a round rod (202b) is provided on the right side of the movable groove (203a) corresponding to the internal clearance of the U-shaped adjustment plate (203), and the round rod (202b) is fixedly connected to the installation box (202).

8. A furan resin regenerated sand recovery device for casting as claimed in claim 1, characterized in that: An inclined plate (301b) is fixed to the lower left end of the material guide box (301), and its horizontal cross-section is inclined with the left side higher and the right side lower; a coarse filter screen (301a) is fixed to the rear wall inside the material guide box (301); limit strips (304c) are provided on both the front and rear edges of the filter plate (304b); the limit strips (304c) are fixedly connected to the dust removal box (304); a box cover (304a) is rotatably connected to the upper wall of the dust removal box (304) at the position where the filter plate (304b) is located; and the free end of the box cover (304a) is detachably fixed to the dust removal box (304); An ash storage box (306) communicating with the interior of the dust removal box (304) is fixed in front of the filter plate (304b) and corresponds to the lower wall of the dust removal box (304); a rotating plate (306a) is rotatably connected to the lower wall of the ash storage box (306); and a free end of the rotating plate (306a) is detachably fixed to the ash storage box (306).

9. A furan resin regenerated sand recovery device for casting as claimed in claim 5, characterized in that: A rotating rod (305) is fixedly passed through the middle of the fan blade (307); a vertical plate (304d) fixed to the dust removal box (304) is arranged at the rear of the fan blade (307) and corresponds to the outside of the rotating rod (305); the rotating rod (305) is rotatably connected to the vertical plate (304d) via a bearing; a small pulley (305a) is fixedly disposed at the rear of the vertical plate (304d) and corresponds to the outside of the rotating rod (305); and a large pulley (302) connected to the small pulley (305a) via a belt (303) is fixedly disposed on the outside of the power output shaft of the drive motor (201).

10. A furan resin regenerated sand recovery device for casting as claimed in claim 9, characterized in that: A circular plate (305c) is fixed to the front end of the rotating rod (305), a mounting tube (308) is fixed along the edge of the front wall of the circular plate (305c), a spring (311) is arranged inside the mounting tube (308), a U-shaped block (309) is arranged in front of the spring (311) to match the internal clearance of the mounting tube (308), a roller (310) in contact with the side wall of the filter plate (304b) is rotatably connected inside the front end of the U-shaped block (309), ridges (310a) are evenly fixed to the outer peripheral wall of the roller (310), a protrusion (309a) is fixed to the rear end of the side wall of the U-shaped block (309), and a rectangular groove (308a) is provided at the position where the protrusion (309a) is located, corresponding to the side wall of the mounting tube (308).

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