A kind of sand recovery equipment for flange casting

Abstract

The present invention belongs to the technical field of molding sand recovery, and discloses a molding sand recovery device for flange casting, including a processing frame, a crushing roller is rotatably installed inside the processing frame, a feeding part is fixedly connected to the top of the processing frame, and a primary screening component is arranged inside the processing frame. The present invention uses the assembly state of the secondary screening component and the primary screening component through the rotation of the multi-stage vibration part, cooperates with the elastic connection effect of the elastic connection component, and makes the secondary screening component intermittently actively impact the primary screening component, thereby quickly and effectively realizing the synchronous auxiliary vibration of multi-stage screening, and the vibration of multiple groups of screening does not need to add multiple groups of vibration generating power, which reduces the investment in power equipment and comprehensively improves the screening effect of molding sand. The final screening effect is improved from the two aspects of enhancing the screening strength and multi-stage vibration, which greatly improves the effect and quality of the final molding sand classification recovery, and the use effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of molding sand recovery, in particular to molding sand recovery equipment for flange casting. Background Art

[0002] The flange casting sand recovery equipment is a device used to recover and reuse the waste sand generated in the flange casting process. In flange casting, the molding sand is the material used to make the mold. After the casting is completed, a large amount of waste sand is usually generated. The molding sand recovery equipment cleans, separates and regenerates the waste molding sand through physical, chemical or thermal treatment methods to achieve the purpose of reuse. The common flange casting molding sand recovery equipment is the molding sand screening equipment.

[0003] The molding sand recovery equipment for flange casting in the prior art usually adopts multi-stage screening after crushing during use. However, the current screening assembly has a general screening effect when realizing screening, and the screening capacity itself is limited during multi-stage screening. The residual screening residues are difficult to separate, and they are retained on the screening components, further affecting the screening effect. The disassembly and separation are relatively complicated. Not only is the screening effect limited, but there is also the problem of difficulty in cleaning the screened materials. There are certain limitations in screening effect and screening material processing. When vibration assistance is used to achieve enhanced screening effect, multi-stage dynamic vibration is used for multi-stage screening, and the comprehensive energy input is large, and the screening effect is not good.

[0004] In addition, during the use of the molding sand recovery equipment for flange casting in the prior art, there are still large dust and fragments inside the molding sand to be recycled. During the screening process, it is affected by the multi-stage screening and the vibration of the multi-stage screening. When the entire processing frame is distributed and screened, the existing dust is easy to fly in the processing frame. On the one hand, the unprocessed dust remains in the molding sand, causing quality problems after screening. The actual quality after final screening is poor. Summary of the invention

[0005] The object of the present invention is to provide a sand recovery device for flange casting to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a molding sand recovery device for flange casting, comprising a processing frame, a crushing roller is rotatably installed inside the processing frame, a feeding part is fixedly connected to the top of the processing frame, a primary screening assembly is arranged inside the processing frame, the number of the primary screening assemblies is two and they are symmetrically distributed below the crushing roller, the inner ends of the two primary screening assemblies are inclined downward, the outer ends of the two primary screening assemblies pass through the side of the processing frame, a secondary screening assembly is arranged below the primary screening assembly, one end of the secondary screening assembly is sleeved on the outer side of the primary screening assembly, an elastic connecting assembly is arranged between the two primary screening assemblies, both ends of the elastic connecting assembly are fixedly connected to the secondary screening assembly, a multi-stage vibration part is arranged between the two secondary screening assemblies, the multi-stage vibration part is rotatably sleeved inside the processing frame, and a power mechanism and a composite power assembly are respectively arranged on the front and rear sides of the processing frame;

[0007] The primary screening assembly comprises a rotating roller, a primary screening belt and side plates;

[0008] The secondary screening assembly comprises a secondary screening lower inclined plate, an arc-shaped portion and a secondary screening upper inclined plate, and a notch is provided at the bottom of the front side of the secondary screening upper inclined plate;

[0009] The elastic connection assembly comprises a supporting frame, a movable plate and a spring.

[0010] Preferably, the side surfaces of the processing frame are respectively provided with an upper lead-out groove, a middle adaption groove and a lower lead-out groove from top to bottom, and a discharge frame is fixedly connected to the side surfaces of the processing frame, and the discharge frame is communicated with the upper lead-out groove.

[0011] Preferably, the rotating roller is rotatably sleeved inside the processing frame, the primary screening belt is sleeved on the outer surface of the rotating roller, the side plates are evenly spaced on the outer surface of the primary screening belt, the outer surface of the primary screening belt is arrayed with primary sieve holes, the interior of the processing frame is fixedly connected with an inner baffle plate, the inner baffle plates are symmetrically distributed in the inner space of the primary screening belt, and the rotating roller located above the incline is located in the upper guide groove.

[0012] Preferably, the outer end of the secondary screening lower inclined plate is inclined downward and movably sleeved in the lower outlet groove, the secondary screening upper inclined plate is fixedly connected to the middle part of the top surface of the secondary screening lower inclined plate, the outer end of the secondary screening upper inclined plate is inclined upward and movably sleeved in the middle adaptation groove, the front sides of the secondary screening lower inclined plate and the secondary screening upper inclined plate are both provided with secondary screening holes, the arc portion is arranged above the front side of the secondary screening lower inclined plate, the arc portion is located on the outer side of the lower end of the primary screening component and is arc-shaped and adapted.

[0013] Preferably, the support frame is fixedly installed inside the processing frame, the movable plate is movably sleeved on both sides of the support frame, the spring is fixedly connected between the two movable plates, and the outer ends of the two movable plates are respectively fixedly connected to the tops of the two secondary screening lower inclined plates.

[0014] Preferably, the multi-stage vibration part includes a rotating shaft and a cam roller. The rotating shaft is rotatably sleeved inside the processing frame, and the cam roller is fixedly sleeved on the outer surface of the rotating shaft and is located between two secondary screening lower inclined plates. The back sides of the two secondary screening lower inclined plates are always in contact with the cam roller.

[0015] Preferably, one end of the rotating roller and the crushing roller both extend into the power mechanism, the feeding part includes a top frame and a guide platform, the top frame is fixedly connected to the top of the processing frame, the guide platform is fixedly connected to the inside of the top frame, and the guide platform is located above the crushing roller and corresponds one to one.

[0016] Preferably, the composite power assembly includes a motor, a fixed cylinder, a connecting shaft and fan blades, the motor is installed on the outside of the processing frame through a bracket, the output shaft of the motor is fixedly connected to one end of the connecting shaft, the other end of the connecting shaft is fixedly connected to the rotating shaft, the fan blades are fixedly installed on the outer surface of the connecting shaft, the fixed cylinder is located on the outside of the connecting shaft and the fan blades, the connecting shaft is rotatably sleeved in the interior of the fixed cylinder, an air outlet is opened at one end of the fixed cylinder, and an air outlet guide pipe is provided at the air outlet.

[0017] Preferably, a distribution suction assembly is fixedly installed on the outside of the processing frame, and the distribution suction assembly includes a distribution frame, an intermediate cavity, a connecting cavity and a suction pipe. The intermediate cavity and the connecting cavity are distributed from bottom to top inside the distribution frame and are connected to each other. One end of the suction pipe is fixedly sleeved on the left side of the distribution frame and is connected with the intermediate cavity and the connecting cavity. The other end of the suction pipe is fixedly sleeved on the inside of the processing frame and is connected with the inside of the processing frame. The right side of the distribution frame is fixedly connected to the fixed cylinder, and the intermediate cavity is connected to the fixed cylinder.

[0018] Preferably, the number of the suction pipes is three, and the three suction pipes are respectively located above the crushing roller, below the crushing roller and below the secondary screening assembly from top to bottom.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The present invention cooperates with two symmetrically distributed and inclinedly arranged primary screening assemblies added below the crushing roller, and cooperates with the secondary screening assembly added below it, utilizes the upper and lower layers of the primary screening belts in the primary screening assembly to complete double primary screening, and cooperates with the oblique upward and downward multi-frequency screening of the secondary screening assembly below, so as to comprehensively improve the multi-stage filtering effect of the actual molding sand after crushing, and realizes double primary screening and multi-frequency secondary screening in a limited two-stage screening process. Moreover, through the rotation of the multi-stage vibration part, in conjunction with the elastic connection effect of the elastic connection assembly, and utilizing the assembly state of the secondary screening assembly and the primary screening assembly, the secondary screening assembly intermittently actively impacts the primary screening assembly, thereby quickly and effectively realizing the synchronous auxiliary vibration of the multi-stage screening, the vibration of the multiple screening groups does not require the addition of multiple groups of vibration generating power, and while reducing the investment in power equipment, the screening effect of the molding sand is comprehensively improved, and the final screening effect is improved from the two aspects of enhanced screening strength and the same multi-stage vibration, which greatly improves the effect and quality of the final molding sand classification and recovery, and has a good use effect.

[0021] 2. The present invention utilizes the primary screening components that are arranged upward at an angle on both sides, and cooperates with the side plates to follow the circular rotation of the primary screening belt. While completing the primary screening, the incompletely crushed molding sand combination that cannot fall off the primary screening is transported upward, and is automatically separated and discharged. At the same time, the downward tilted screening effect of the secondary screening component is utilized, and in the process of blocking screening with the inclined plate on the secondary screening, the large-particle molding sand after screening is automatically tilted downward and separated. The intermediate screening products in the entire multi-stage screening process can be automatically and effectively separated and discharged, without the need for a separate sorting and cleaning process, the efficiency of the whole machine is greatly improved, and the comprehensive use effect is good.

[0022] 3. The present invention utilizes the connection and coordination of the composite power component and the distribution suction component to realize the provision of the rotational force of the multi-stage vibration part on the one hand, and utilizes the additional fan blades and the suction pipes distributed up and down to complete the suction and discharge of dust in different areas when the multi-stage vibration and multi-stage screening are carried out on the other hand. A single set of power motors is used to complete the deep suction treatment of dust in the multi-stage vibration and screening process. While completing the screening of the molding sand, the air suction of different working conditions areas is utilized to complete multiple suction and cleaning of dust step by step, which greatly improves the dust removal effect, improves the final quality of the molding sand recovery, and at the same time maintains the air state at the recycling and processing site, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention;

[0024] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0025] Figure 3 is a cross-sectional view of a processing frame of the present invention;

[0026] Figure 4 It is a schematic diagram of the feeding part of the present invention;

[0027] Figure 5 It is a schematic diagram of the back side of the processing frame of the present invention;

[0028] Figure 6 It is a schematic diagram of the arrangement of the primary screening assembly and the secondary screening assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the installation of the secondary screening assembly and the elastic connection assembly of the present invention;

[0030] Figure 8 is a schematic diagram of a primary screening assembly of the present invention;

[0031] Fig. 9 is a schematic diagram of an elastic connection assembly of the present invention;

[0032] Fig.10 is a schematic diagram of a multi-stage vibration assembly of the present invention;

[0033] Fig.11 It is an exploded schematic diagram of the composite power assembly and the distribution and intake assembly of the present invention;

[0034] Fig.12 A cross-sectional view of a dispensing inhalation assembly according to the present invention.

[0035] In the figure: 1, processing frame; 2, crushing roller; 3, feeding part; 31, top frame; 32, guide platform; 4, primary screening assembly; 41, rotating roller; 42, primary screening belt; 43, side plate; 5, secondary screening assembly; 51, secondary screening lower inclined plate; 52, arc-shaped part; 53, secondary screening upper inclined plate; 6, elastic connection assembly; 61, support frame; 62, movable plate; 63, spring; 7, multi-stage vibration part; 71. Rotating shaft; 72. Cam roller; 8. Discharge frame; 9. Power mechanism; 10. Inner baffle; 11. Upper lead-out groove; 12. Middle adapter groove; 13. Lower lead-out groove; 14. Composite power assembly; 141. Motor; 142. Fixed cylinder; 143. Connecting shaft; 144. Fan blades; 15. Distribution suction assembly; 151. Distribution frame; 152. Intermediate cavity; 153. Connecting cavity; 154. Suction pipe. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] like Figures 1 to 12 As shown, an embodiment of the present invention provides a sand recovery device for flange casting, comprising a processing frame 1, a crushing roller 2 is rotatably installed inside the processing frame 1, a feeding part 3 is fixedly connected to the top of the processing frame 1, a primary screening assembly 4 is arranged inside the processing frame 1, the number of the primary screening assemblies 4 is two and they are symmetrically distributed below the crushing roller 2, the inner ends of the two primary screening assemblies 4 are inclined downward, the outer ends of the two primary screening assemblies 4 pass through the side of the processing frame 1, a secondary screening assembly 5 is arranged below the primary screening assembly 4, one end of the secondary screening assembly 5 is sleeved on the outside of the primary screening assembly 4, an elastic connection assembly 6 is arranged between the two primary screening assemblies 4, both ends of the elastic connection assembly 6 are fixedly connected to the secondary screening assembly 5, a multi-stage vibration part 7 is arranged between the two secondary screening assemblies 5, the multi-stage vibration part 7 is rotatably sleeved inside the processing frame 1, and a power mechanism 9 and a composite power assembly 14 are respectively arranged on the front and rear sides of the processing frame 1;

[0038] The primary screening assembly 4 comprises a rotating roller 41, a primary screening belt 42 and a side plate 43;

[0039] The secondary screening assembly 5 comprises a secondary screening lower inclined plate 51, an arc-shaped portion 52 and a secondary screening upper inclined plate 53, and a notch is provided at the bottom of the front side of the secondary screening upper inclined plate 53;

[0040] The elastic connection assembly 6 includes a support frame 61 , a movable plate 62 and a spring 63 .

[0041] The first embodiment: when in use, the molding sand to be recovered is put into the top of the feeding part 3, and the power mechanism 9 is started to start the crushing roller 2 and the primary screening component 4. As the crushing roller 2 rotates, the block molding sand is crushed and falls downward, and the crushed sand falls on the top of the primary screening component 4 on both sides below. The large-particle molding sand with complete particles falls along the primary sieve hole (not shown in the figure) at the top of the primary screening belt 42, and is filtered out again through the primary screening belt 42 below, while the remaining incompletely crushed combined molding sand falls on the top of the primary screening belt 42 and is supported by the side plate 43. As the rotating roller 41 rotates, the remaining incompletely crushed combined molding sand on the primary screening belt 42 is gradually transported upward, and is discharged along the upper guide trough 11 and the discharging frame 8 for standby use, while the molding sand that has passed the primary screening falls downward into the secondary screening component 5, part of which falls directly on the secondary screening upper inclined plate 53, and part of which falls on the secondary screening lower inclined plate 51, and is filtered out through the second screening belt 42. The secondary sieve holes (not shown in the figure) on the top surfaces of the secondary screening upper inclined plate 53 and the secondary screening lower inclined plate 51 are screened downward, and the remaining large-particle molding sand passes through the notch (not shown in the figure) at the bottom of the secondary screening upper inclined plate 53 and slides downward along the secondary screening lower inclined plate 51, and slides out along the lower lead-out groove 13 for standby use. The completely screened molding sand falls from the bottom of the processing frame 1 and is collected. During the screening process, the composite power component 14 is started, so that the motor 141 in the composite power component 14 drives the connecting shaft 143 to rotate, thereby rotating the rotating shaft 71 in the multi-stage vibration part 7, and rotating the cam roller 72. During the rotation of the cam roller 72, the lateral movement of the secondary screening components 5 symmetrically distributed on both sides is intermittently pushed in turn. With the lateral instantaneous displacement of the secondary screening component 5, expansion vibration occurs between the secondary screening component 5 and the processing frame 1 and the primary screening component 4, and the entire primary screening component 4 and the secondary screening component 5 vibrate intermittently to cooperate to complete the screening process.

[0042] Firstly, by cooperating with two symmetrically distributed and inclined primary screening components 4 added below the crushing roller 2, and cooperating with the secondary screening component 5 added below it, the upper and lower layers of the primary screening belts 42 in the primary screening component 4 are used to complete double primary screening, and the multi-frequency screening of the secondary screening component 5 below is coordinated with the upward and downward inclined multi-frequency screening, so as to comprehensively improve the multi-stage filtering effect of the actual molding sand after crushing, and realize double primary screening and multi-frequency secondary screening in the limited two-stage screening process. Moreover, through the rotation of the multi-stage vibration part 7, in coordination with the elastic connection effect of the elastic connection component 6, and by utilizing the assembly state of the secondary screening component 5 and the primary screening component, the secondary screening component 5 intermittently actively impacts the primary screening component 4, so as to quickly and effectively realize the synchronous auxiliary vibration of the multi-stage screening, and the vibration of the multiple screening groups does not need to add multiple groups of vibration generating power, which reduces the investment in power equipment, and comprehensively improves the screening effect of the molding sand, and improves the final screening effect from the two aspects of enhancing the screening strength and the same multi-stage vibration, which greatly improves the effect and quality of the final molding sand classification and recovery, and has a good use effect.

[0043] In addition, by utilizing the first-stage screening components 4 that are arranged upward at an angle on both sides, and cooperating with the side plates 43 to follow the circular rotation of the first-stage screening belt 42, while completing the first-stage screening, the incompletely crushed molding sand combination that cannot fall off the first-stage screening is transported upward and automatically separated and discharged. At the same time, by utilizing the downward-inclined screening effect of the second-stage screening component 5 and cooperating with the blocking screening process of the upper inclined plate 53 of the second-stage screening, the large-particle molding sand after screening is automatically separated and tilted downward. The intermediate screening products in the entire multi-stage screening process can be automatically and effectively separated and discharged without the need for a separate sorting and cleaning process. The efficiency of the whole machine is greatly improved, and the comprehensive use effect is good.

[0044] Second embodiment: As the composite power component 14 starts and completes the rotation of the multi-stage vibration part 7, the connecting shaft 143 in the composite power component 14 in the synchronous state drives the fan blades 144 to rotate during rotation, and forms an axial flow wind, and inhales air from the distribution suction component 15 and blows it out along the outer end of the fixed cylinder 142. As the air is inhaled into the distribution frame 151 of the distribution suction component 15, the three groups of suction pipes 154 inhale air from the processing frame 1 at the same time, so that the dust raised during the screening above and below the first-level screening component 4 and above the crushing roller 2 is inhaled, and the inhaled dust is blown out through the fixed cylinder 142 and collected by the external collection processing component, and the dust in the processing frame 1 disappears.

[0045] Firstly, by utilizing the connection and coordination between the composite power component 14 and the distribution suction component 15, on the one hand, the rotational force of the multi-stage vibration part 7 is provided, and on the other hand, by utilizing the additional fan blades 144 and the suction pipes 154 distributed up and down, dust suction and discharge in different areas are completed when multi-stage vibration and multi-stage screening are carried out. A single power motor 141 is utilized to complete the deep suction treatment of dust during the multi-stage vibration and screening process. While completing the screening of the molding sand, the air suction of different working conditions areas is utilized to complete multiple dust suction and cleaning step by step, which greatly improves the dust removal effect, improves the final quality of the molding sand recovery, and at the same time maintains the air state at the recycling and processing site, and the use effect is good.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, the side of the processing frame 1 is respectively provided with an upper lead-out groove 11 , a middle adapting groove 12 and a lower lead-out groove 13 from top to bottom, and the side of the processing frame 1 is fixedly connected with a discharge frame 8 , which is communicated with the upper lead-out groove 11 .

[0047] The upper outlet trough 11 is used to discharge the combined molding sand during the primary screening, and the discharge frame 8 is used to isolate and collect the sand.

[0048] like Figure 2 , Figure 6 and Figure 8 As shown, the rotating roller 41 is rotatably sleeved inside the processing frame 1, the primary screening belt 42 is sleeved on the outer surface of the rotating roller 41, the side plates 43 are evenly distributed on the outer surface of the primary screening belt 42, and the outer surface of the primary screening belt 42 is arrayed with primary sieve holes, the interior of the processing frame 1 is fixedly connected with an inner baffle plate 10, and the inner baffle plate 10 is symmetrically distributed in the inner space of the primary screening belt 42, and the rotating roller 41 located above the incline is located in the upper guide groove 11.

[0049] The first-stage screening assembly 4 completes primary screening, filters and transports out the incompletely crushed combined sand. The first-stage screening hole is used for screening and filtering, and the internal baffle 10 is used to block it to prevent it from entering between the first-stage screening belt 42 and the rotating roller 41.

[0050] like Figure 2 , Figure 6 and Figure 7 As shown, the outer end of the secondary screening lower inclined plate 51 is inclined downward and movably sleeved in the lower outlet groove 13, the secondary screening upper inclined plate 53 is fixedly connected to the middle part of the top surface of the secondary screening lower inclined plate 51, the outer end of the secondary screening upper inclined plate 53 is inclined upward and movably sleeved in the middle adapting groove 12, the front sides of the secondary screening lower inclined plate 51 and the secondary screening upper inclined plate 53 are both provided with secondary screening holes, the arc portion 52 is arranged above the front side of the secondary screening lower inclined plate 51, and the arc portion 52 is located on the outer side of the lower end of the primary screening component 4 and is arc-shaped and adapted.

[0051] The secondary screening assembly 5 completes the secondary screening, and the space enclosed by the secondary screening lower inclined plate 51 and the secondary screening upper inclined plate 53 is fully screened, and the gap at the bottom of the secondary screening upper inclined plate 53 is cooperated to allow the large-particle molding sand after screening to be isolated through the lower outlet trough 13.

[0052] like Figure 2 , Figure 6 , Figure 5 , Figure 7 and Fig. 9 As shown, the support frame 61 is fixedly installed inside the processing frame 1, the movable plate 62 is movably sleeved on both sides of the support frame 61, the spring 63 is fixedly connected between the two movable plates 62, and the outer ends of the two movable plates 62 are respectively fixedly connected to the tops of the two secondary screening lower inclined plates 51.

[0053] The elastic connection of the secondary screening components 5 on both sides is realized by utilizing the elastic connection component 6, so as to facilitate the cooperation with the multi-stage vibration part 7 to complete the intermittent vibration. The spring 63 provides the vibration effect, and the support frame 61 maintains the fixed support effect.

[0054] like Figure 2 , Figure 6 and Fig.10 As shown, the multi-stage vibration part 7 includes a rotating shaft 71 and a cam roller 72. The rotating shaft 71 is rotatably sleeved inside the processing frame 1, and the cam roller 72 is fixedly sleeved on the outer surface of the rotating shaft 71 and is located between the two secondary screening lower inclined plates 51. The back sides of the two secondary screening lower inclined plates 51 are always in contact with the cam roller 72.

[0055] By utilizing the multi-stage vibration part 7 to achieve synchronous intermittent vibration of the primary screening component 4 and the secondary screening component 5, the screening effect is enhanced and the investment in power equipment is reduced.

[0056] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, one end of the rotating roller 41 and the crushing roller 2 are extended into the power mechanism 9, the feeding part 3 includes a top frame 31 and a guide platform 32, the top frame 31 is fixedly connected to the top of the processing frame 1, the guide platform 32 is fixedly connected to the inside of the top frame 31, and the guide platform 32 is located above the crushing roller 2 and corresponds one to one.

[0057] The feed section 3 provides a feed crushing effect.

[0058] like Figure 1 , Figure 2 , Fig.11 and Fig.12As shown, the composite power assembly 14 includes a motor 141, a fixed cylinder 142, a connecting shaft 143 and a fan blade 144. The motor 141 is installed on the outside of the processing frame 1 through a bracket. The output shaft of the motor 141 is fixedly connected to one end of the connecting shaft 143, and the other end of the connecting shaft 143 is fixedly connected to the rotating shaft 71. The fan blade 144 is fixedly installed on the outer surface of the connecting shaft 143. The fixed cylinder 142 is located on the outside of the connecting shaft 143 and the fan blade 144. The connecting shaft 143 is rotatably sleeved in the interior of the fixed cylinder 142. An air outlet is opened at one end of the fixed cylinder 142, and a guide air outlet pipe is provided at the air outlet. A distribution suction assembly 15 is fixedly installed on the outside of the processing frame 1. The distribution suction assembly 15 includes a distribution Frame 151, middle cavity 152, connecting cavity 153 and suction pipe 154, the middle cavity 152 and connecting cavity 153 are distributed inside the distribution frame 151 from bottom to top and are connected to each other, one end of the suction pipe 154 is fixedly sleeved on the left side of the distribution frame 151 and is connected with the middle cavity 152 and the connecting cavity 153, the other end of the suction pipe 154 is fixedly sleeved on the inside of the processing frame 1 and is connected with the inside of the processing frame 1, the right side of the distribution frame 151 is fixedly connected with the fixed cylinder 142, the middle cavity 152 is connected with the fixed cylinder 142, there are three suction pipes 154, and the three suction pipes 154 are respectively located above the crushing roller 2, below the crushing roller 2 and below the secondary screening assembly 5 from top to bottom.

[0059] The composite power component 14 is used to realize the rotation of the multi-stage vibration part 7 to provide vibration power, and the connecting shaft 143 and the fan blades 144 are used to provide suction force, and the distribution suction component 15 is used to suck air for different places of multi-stage screening to complete the dust suction process, avoid the dust flying in the processing frame 1, and reduce the amount of dust in the molding sand after the final screening and recovery, thereby further providing a screening effect.

[0060] Working principle and usage process:

[0061] Instructions for use or operation methods used to describe the technology; when in use, the molding sand to be recovered is put in along the top of the feed part 3, and the power mechanism 9 is started, so that the crushing roller 2 and the primary screening component 4 are started. As the crushing roller 2 rotates, the block molding sand is crushed and falls downward, and the crushed sand falls on the top of the primary screening component 4 on both sides below. The large-particle molding sand with complete particles falls along the primary sieve holes (not shown in the figure) at the top of the primary screening belt 42, and is filtered out again through the primary screening belt 42 below, while the remaining incompletely crushed combined molding sand falls on the top of the primary screening belt 42 and is supported by the side plate 43. As the roller 41 rotates, the mold sand is crushed and falls downward, and the crushed sand falls on the top of the primary screening belt 42. The incompletely crushed combined molding sand remaining on the primary screening belt 42 rotates, and is gradually transported upward, and is discharged along the upper guide trough 11 and the discharging frame 8 for standby use, while the molding sand that has passed the primary screening falls downward into the secondary screening assembly 5, part of which falls directly on the secondary screening upper inclined plate 53, and part of which falls on the secondary screening lower inclined plate 51, and is screened downward through the secondary sieve holes (not shown in the figure) on the top surfaces of the secondary screening upper inclined plate 53 and the secondary screening lower inclined plate 51, and the remaining large-particle molding sand passes through the notch (not shown in the figure) at the bottom of the secondary screening upper inclined plate 53 and slides downward along the secondary screening lower inclined plate 51, and slides out along the lower guide trough 13 for standby use, and is completely The screened molding sand falls from the bottom of the processing frame 1 and is collected. During the screening process, the composite power assembly 14 is started, so that the motor 141 in the composite power assembly 14 drives the connecting shaft 143 to rotate, thereby rotating the rotating shaft 71 in the multi-stage vibration part 7 and rotating the cam roller 72. During the rotation of the cam roller 72, the lateral movement of the secondary screening assembly 5 symmetrically distributed on both sides is intermittently pushed in turn. With the lateral instantaneous displacement of the secondary screening assembly 5, expansion vibration occurs between the secondary screening assembly 5 and the processing frame 1 and the primary screening assembly 4. The entire primary screening assembly 4 and the secondary screening assembly 5 vibrate intermittently to cooperate to complete the screening process. When the combined power component 14 is started and the rotation of the multi-stage vibration part 7 is completed, the connecting shaft 143 in the combined power component 14 in the synchronous state drives the fan blades 144 to rotate during rotation, and forms an axial flow wind, and inhales air from the distribution suction component 15 and blows it out along the outer end of the fixed cylinder 142. As the air is inhaled into the distribution frame 151 of the distribution suction component 15, the three groups of suction pipes 154 inhale air from the processing frame 1 at the same time, so that the oxygen dust is inhaled during the screening at the upper and lower parts of the first-level screening component 4 and above the crushing roller 2. The inhaled dust is blown out through the fixed cylinder 142 and collected by the external collection processing component, and the dust in the processing frame 1 disappears.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sand recovery device for flange casting, comprising a processing frame (1), characterized in that: A crushing roller (2) is rotatably mounted inside the processing frame (1), a feeding portion (3) is fixedly connected to the top of the processing frame (1), a primary screening assembly (4) is provided inside the processing frame (1), two primary screening assemblies (4) are symmetrically distributed below the crushing roller (2), the inner ends of the two primary screening assemblies (4) are inclined downward, the outer ends of the two primary screening assemblies (4) pass through the side of the processing frame (1), and a secondary screening assembly (4) is provided below the primary screening assembly (4). 5), one end of the secondary screening component (5) is sleeved on the outside of the primary screening component (4), an elastic connection component (6) is provided between the two primary screening components (4), both ends of the elastic connection component (6) are fixedly connected to the secondary screening component (5), a multi-stage vibration part (7) is provided between the two secondary screening components (5), the multi-stage vibration part (7) is rotatably sleeved inside the processing frame (1), and a power mechanism (9) and a composite power component (14) are respectively provided on the front and rear sides of the processing frame (1); The primary screening assembly (4) comprises a rotating roller (41), a primary screening belt (42) and a side plate (43); The secondary screening assembly (5) comprises a secondary screening lower inclined plate (51), an arc-shaped portion (52) and a secondary screening upper inclined plate (53), wherein a notch is provided at the bottom of the front side of the secondary screening upper inclined plate (53); The elastic connection assembly (6) comprises a support frame (61), a movable plate (62) and a spring (63).

2. The flange casting sand recovery device according to claim 1, characterized in that: The side surface of the processing frame (1) is respectively provided with an upper lead-out groove (11), a middle adaption groove (12) and a lower lead-out groove (13) from top to bottom, and a discharge frame (8) is fixedly connected to the side surface of the processing frame (1), and the discharge frame (8) is in communication with the upper lead-out groove (11).

3. The flange casting sand recovery device according to claim 2, characterized in that: The rotating roller (41) is rotatably sleeved inside the processing frame (1); the primary screening belt (42) is sleeved on the outer surface of the rotating roller (41); the side plates (43) are evenly spaced on the outer surface of the primary screening belt (42); the outer surface of the primary screening belt (42) is provided with primary sieve holes in an array; an inner baffle plate (10) is fixedly connected to the inside of the processing frame (1); the inner baffle plate (10) is symmetrically distributed in the inner space of the primary screening belt (42); and the rotating roller (41) located above the inclination is located in the upper guide groove (11).

4. The flange casting sand recovery device according to claim 3, characterized in that: The outer end of the secondary screening lower inclined plate (51) is inclined downward and movably sleeved in the lower outlet groove (13); the secondary screening upper inclined plate (53) is fixedly connected to the middle part of the top surface of the secondary screening lower inclined plate (51); the outer end of the secondary screening upper inclined plate (53) is inclined upward and movably sleeved in the middle adapting groove (12); the front sides of the secondary screening lower inclined plate (51) and the secondary screening upper inclined plate (53) are both provided with secondary screening holes; the arc portion (52) is arranged above the front side of the secondary screening lower inclined plate (51); the arc portion (52) is located outside the lower end of the primary screening assembly (4) and is arc-shaped and adaptable.

5. The flange casting sand recovery device according to claim 1, characterized in that: The support frame (61) is fixedly mounted inside the processing frame (1); the movable plate (62) is movably sleeved on both sides of the support frame (61); the spring (63) is fixedly connected between the two movable plates (62); and the outer ends of the two movable plates (62) are respectively fixedly connected to the tops of the two secondary screening lower inclined plates (51).

6. The flange casting sand recovery device according to claim 1, characterized in that: The multi-stage vibration part (7) comprises a rotating shaft (71) and a cam roller (72); the rotating shaft (71) is rotatably sleeved inside the processing frame (1); the cam roller (72) is fixedly sleeved on the outer surface of the rotating shaft (71) and is located between two secondary screening lower inclined plates (51); the back surfaces of the two secondary screening lower inclined plates (51) are always in contact with the cam roller (72).

7. The flange casting sand recovery device according to claim 1, characterized in that: One end of the rotating roller (41) and the crushing roller (2) both extend into the power mechanism (9), and the feeding part (3) comprises a top frame (31) and a guide platform (32), wherein the top frame (31) is fixedly connected to the top of the processing frame (1), and the guide platform (32) is fixedly connected to the inside of the top frame (31), and the guide platform (32) is located above the crushing roller (2) and corresponds one to one.

8. The flange casting sand recovery device according to claim 1, characterized in that: The composite power assembly (14) comprises a motor (141), a fixing cylinder (142), a connecting shaft (143) and a fan blade (144); the motor (141) is mounted on the outside of the processing frame (1) via a bracket; the output shaft of the motor (141) is fixedly connected to one end of the connecting shaft (143); the other end of the connecting shaft (143) is fixedly connected to the rotating shaft (71); the fan blade (144) is fixedly mounted on the outer surface of the connecting shaft (143); the fixing cylinder (142) is located on the outside of the connecting shaft (143) and the fan blade (144); the connecting shaft (143) is rotatably sleeved inside the fixing cylinder (142); an air outlet is provided at one end of the fixing cylinder (142); and an air outlet guide pipe is provided at the air outlet.

9. The flange casting sand recovery device according to claim 8, characterized in that: A distribution suction assembly (15) is fixedly mounted on the outside of the processing frame (1), and the distribution suction assembly (15) comprises a distribution frame (151), an intermediate cavity (152), a connecting cavity (153) and a suction pipe (154); the intermediate cavity (152) and the connecting cavity (153) are distributed from bottom to top inside the distribution frame (151) and are connected to each other; one end of the suction pipe (154) is fixedly sleeved on the left side of the distribution frame (151) and is connected to the intermediate cavity (152) and the connecting cavity (153); the other end of the suction pipe (154) is fixedly sleeved on the inside of the processing frame (1) and is connected to the inside of the processing frame (1); the right side of the distribution frame (151) is fixedly connected to a fixed cylinder (142); and the intermediate cavity (152) is connected to the fixed cylinder (142).

10. The flange casting sand recovery device according to claim 9, characterized in that: The number of the suction pipes (154) is three, and the three suction pipes (154) are respectively located above the crushing roller (2), below the crushing roller (2), and below the secondary screening assembly (5) from top to bottom.

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