Casting sand raw material screening and recycling device

Abstract

The utility model discloses a foundry sand raw material screening and recycling device, which relates to the technical field of foundry sand raw materials and comprises a device body, a crushing bin is arranged in the device body, a feeding pipeline and a discharging pipeline are respectively formed on the inner walls of the two sides of the crushing bin, and the inner wall of the crushing bin is rotatably connected with a crushing cylinder and a rotating shaft. The top end of the feeding pipeline is connected with a hopper in a penetrating mode, and the hopper is arranged on the upper portion of the device body. According to the foundry sand raw material crushing device, the transverse and rotatable crushing cylinder is arranged, and the rotating shaft and the blades are arranged, so that foundry sand raw materials can repeatedly make contact with moving areas of the blades in the treatment process in the crushing cylinder, and the crushing efficiency and effect of the foundry sand raw materials can be effectively improved; and the situation that the foundry sand raw materials need to be repeatedly conveyed back into the smashing barrel to be machined is avoided, the smashing efficiency and effect of the foundry sand raw material screening and recycling device can be effectively improved, and the use energy consumption of the foundry sand raw material screening and recycling device is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry sand raw materials, in particular to a foundry sand raw material screening and recovery device. Background Art

[0002] Lost foam casting, also known as full mold casting, is a new casting method in which wax or foam models with similar size and shape to the casting are bonded together to form a model cluster, brushed with refractory paint and dried, and then buried in dry quartz sand for vibration molding. The mold is poured under negative pressure to vaporize the model, and liquid metal occupies the position of the model. After solidification and cooling, the casting is formed. The raw material of casting sand will contain a lot of impurities during repeated use, so the raw material needs to be screened and cleaned.

[0003] After extensive searching, it was found that: China Utility Model Patent Column: Publication No. CN221515980U discloses a foundry sand raw material screening and recovery device, which belongs to the technical field of casting auxiliary equipment, including a shell, a partition is fixedly provided at the center of the shell, and the interior of the shell is divided into a crushing chamber and a screening chamber from top to bottom by the partition, a crushing cylinder is fixedly connected to the center of the crushing chamber, and a crushing component is provided in the crushing cylinder, which fits the inner wall of the crushing cylinder and crushes the foundry sand raw materials.

[0004] In the above scheme, although there are many benefits, the method of using the blades in the crushing chamber to crush the raw materials is less effective, so a spiral auger is needed to circulate and repeatedly return the crushed raw materials to the crushing chamber, which increases the number of times the raw materials are crushed and thus increases the operating energy consumption and working time of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a foundry sand raw material screening and recovery device to solve the problem of poor crushing effect of the foundry sand raw materials proposed in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening and recovery device for casting sand raw materials, comprising a crushing bin provided in the device body, a feed pipe and a discharge pipe being respectively formed on the inner walls on both sides of the crushing bin, and a crushing drum and a rotating shaft being rotatably connected to the inner wall of the crushing bin, the top end of the feed pipe being through-connected to a hopper, the hopper being arranged on the upper part of the device body, the other end of the feed pipe being through-connected to one side of the crushing drum, the two ends of the crushing drum being respectively facing the pipe openings of the feed pipe and the discharge pipe, the rotating shaft being located at the inner center of the crushing drum, a plurality of groups of blades being staggeredly connected to the outside of the rotating shaft, a rotating mechanism being provided in the device body for driving the rotating shaft and the crushing drum to rotate relative to each other, the outer side of the crushing drum being formed with filter holes distributed in a circumferential array, and the inner wall of the crushing drum being fixedly connected with push rods distributed in a circumferential array.

[0007] Preferably, the rotating mechanism includes an inner gear ring, and a large gear and a small gear meshing with each other, the inner gear ring is meshingly connected to the large gear, and the inner gear ring is fixedly connected to one end of the crushing barrel, the large gear and the small gear are both rotatably connected to the side wall of the mounting groove opened inside the device body, the axis of one side of the small gear is fixedly connected to the end of the rotating shaft, and the outer diameter of the large gear is larger than the outer diameter of the small gear.

[0008] Preferably, a spirally distributed guide plate is fixedly connected to the inner wall of the pulverizing cylinder, and the guide plate and the push rod are cross-fixedly connected to each other.

[0009] Preferably, a screening bin is formed inside the device body, and the screening bin is located directly below the crushing bin. Inclined plates distributed in a linear array are respectively provided on the inner walls on both sides of the screening bin, and the two groups of inclined plates are mirror-symmetrical to each other and staggered with each other. A sieve plate and a vibrator are provided on the inner wall of the screening bin, and the sieve plate is located directly below the inclined plate, and the bottom of the sieve plate is in contact with the vibrator.

[0010] Preferably, a lifting bin is provided in the body of the device, a through-connection opening is formed between the lifting bin and the screening bin, a through-connection connecting pipe is formed between the lifting bin and the feed pipe, a spiral auger is rotatably connected to the top wall inside the lifting bin, the lifting bin is located on one side of the screening bin, and a through-type lifting opening is formed at the bottom of the lifting bin.

[0011] Preferably, two servo motors are installed on the device body, and the two servo motors are fixedly connected to the top of the spiral auger and one side of the large gear respectively. The servo motor used in this application is a purchased part, which is selected according to the power and size requirements. The system for controlling the switch adopts the module provided by the corresponding merchant. This application will not go into details. The servo motor is electrically connected to the power supply.

[0012] Preferably, the crushing cylinder is arranged at an angle, and a through-type discharge port is formed at the bottom of the screening bin.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present application provides a horizontal and rotatable crushing drum, a rotating shaft and a blade, so that the foundry sand raw materials can repeatedly contact the active area of ​​the blade during the processing in the crushing drum, thereby effectively improving the crushing efficiency and effect of the foundry sand raw materials, and thus avoiding the need to repeatedly transport the foundry sand raw materials back to the crushing drum for processing, thereby effectively improving the crushing efficiency and effect of the foundry sand raw material screening and recovery device, and reducing its energy consumption.

[0015] 2. This application sets a large gear and a small gear so that the crushing drum and the rotating shaft can rotate relative to each other, thereby further improving the crushing efficiency and effect of the foundry sand raw material screening and recovery device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic cross-sectional view of the overall structure of a foundry sand raw material screening and recovery device according to the present invention;

[0017] Figure 2 This is a frontal perspective schematic diagram of an overall foundry sand raw material screening and recovery device according to the present invention;

[0018] Figure 3 This is a three-dimensional schematic diagram of the coordination of a crushing cylinder, a small gear and a large gear of a foundry sand raw material screening and recovery device of the utility model;

[0019] Figure 4 This is a schematic cross-sectional perspective diagram of the cooperation of a crushing drum, a small gear and a large gear of a foundry sand raw material screening and recovery device of the utility model.

[0020] Numbers in the figure: 1. Device body; 2. Screening bin; 3. Crushing bin; 4. Feed pipe; 5. Discharge pipe; 6. Crushing cylinder; 7. Rotating shaft; 8. Blade; 9. Large gear; 10. Small gear; 11. Internal gear ring; 12. Guide plate; 13. Push rod; 14. Inclined plate; 15. Screen plate; 16. Lifting bin; 17. Connecting pipe; 18. Auger; 19. Servo motor. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] Example: Figure 1 - Figure 4As shown, the utility model provides a technical solution of a screening and recovery device for casting sand raw materials, including a crushing bin 3 provided in a device body 1, a feeding pipe 4 and a discharging pipe 5 are respectively formed on the inner walls on both sides of the crushing bin 3, and a crushing cylinder 6 and a rotating shaft 7 are rotatably connected to the inner wall of the crushing bin 3, the top of the feed pipe 4 is through-connected with a hopper, the hopper is provided at the upper part of the device body 1, the other end of the feed pipe 4 is through-connected with one side of the crushing cylinder 6, the two ends of the crushing cylinder 6 are respectively facing the pipe openings of the feed pipe 4 and the discharging pipe 5, the rotating shaft 7 is located at the inner center of the crushing cylinder 6, and a plurality of groups of blades 8 distributed in an interlaced manner are fixedly connected to the outer side of the rotating shaft 7, a rotating mechanism that drives the rotating shaft 7 and the crushing cylinder 6 to rotate relative to each other is provided in the device body 1, the outer side of the crushing cylinder 6 is formed with filter holes distributed in a circumferential array, and the inner wall of the crushing cylinder 6 is fixedly connected with push rods 13 distributed in a circumferential array;

[0023] The foundry sand raw material is fed into the crushing drum 6 through the feeding pipe 4, and then the foundry sand raw material is crushed by the blade 8 by rotating the rotating shaft 7. At the same time, by reversing the crushing drum 6, the foundry sand raw material in the crushing drum 6 can be repeatedly thrown up and down, and repeatedly pass through the active area of ​​the blade 8, thereby improving the crushing effect of the foundry sand raw material in the crushing drum 6. Among them, the push rod 13 can easily push the foundry sand raw material to be thrown up and moved around the inner wall of the crushing drum 6.

[0024] like Figure 3 and Figure 4 As shown, the rotating mechanism includes an internal gear ring 11, and a large gear 9 and a small gear 10 that are meshed with each other. The internal gear ring 11 is meshed with the large gear 9 and fixedly connected to one end of the crushing cylinder 6. The large gear 9 and the small gear 10 are both rotatably connected to the side wall of the mounting groove opened inside the device body 1. The axis of one side of the small gear 10 is fixedly connected to the end of the rotating shaft 7. The outer diameter of the large gear 9 is larger than the outer diameter of the small gear 10.

[0025] By rotating the large gear 9, the large gear 9 drives the rotating shaft 7 to rotate forward through the small gear 10. At the same time, the large gear 9 drives the crushing drum 6 to rotate reversely through the inner gear ring 11, thereby improving the crushing effect of the foundry sand raw materials.

[0026] like Figure 1 and Figure 4 As shown, a spirally distributed guide plate 12 is fixedly connected to the inner wall of the pulverizing cylinder 6, and the guide plate 12 and the push rod 13 are cross-fixedly connected to each other;

[0027] The guide plates 12 can be used to increase the residence time of the foundry sand raw material in the comminution drum 6 and thus improve the comminution effect of the foundry sand raw material.

[0028] like Figure 2As shown, a screening chamber 2 is formed inside the device body 1, and the screening chamber 2 is located directly below the crushing chamber 3. Inclined plates 14 are respectively provided on the inner walls of both sides of the screening chamber 2. The two sets of inclined plates 14 are mirror-symmetrical and staggered with each other. A sieve plate 15 and a vibrator are provided on the inner wall of the screening chamber 2. The sieve plate 15 is located directly below the inclined plate 14, and the bottom of the sieve plate 15 is in contact with the vibrator.

[0029] The foundry sand raw materials crushed in the crushing drum 6 are discharged from the discharge pipe 5 into the screening bin 2 . At this time, the foundry sand raw materials pass through each inclined plate 14 and are finally screened by the screen plate 15 .

[0030] like Figure 2 As shown, a lifting bin 16 is provided in the device body 1, a through-hole is formed between the lifting bin 16 and the screening bin 2, a connecting pipe 17 is formed between the lifting bin 16 and the feed pipe 4, a spiral auger 18 is rotatably connected to the top wall of the lifting bin 16, the lifting bin 16 is located on one side of the screening bin 2, and a through-type lifting port is formed at the bottom of the lifting bin 16;

[0031] The foundry sand raw materials filtered by the sieve plate 15 are discharged through the discharge port, while the unfiltered foundry sand raw materials move along the inclined sieve plate 15 into the lifting bin 16. Thereafter, the unfiltered foundry sand raw materials are sent back to the connecting pipe 17 by rotating the spiral auger 18, and then re-enter the crushing drum 6 along the connecting pipe 17 and the feed pipe 4 for crushing.

[0032] The vibrator is composed of an eccentric wheel, a second rotating shaft, a second motor and other related structures. The specific related structures of the vibrator, spiral auger 18, inclined plate 14 and screen plate 15, as well as the connection method and use method of the related structures are all existing technologies. For specific description, refer to a foundry sand raw material screening and recovery device disclosed in publication number CN221515980U, and this application will not go into details.

[0033] like Figure 2 As shown, two servo motors 19 are installed on the device body 1, and the two servo motors 19 are fixedly connected to the top of the spiral auger 18 and one side of the large gear 9 respectively. The servo motor 19 used in this application is a purchased part, which is selected according to the power and size requirements. The system for controlling the switch adopts the module provided by the corresponding merchant. This application will not go into details. The servo motor 19 is electrically connected to the power supply.

[0034] like Figure 2 As shown, the crushing cylinder 6 is tilted and a through discharge port is formed at the bottom of the screening bin 2;

[0035] The inclined setting of the crushing drum 6 can facilitate the discharge of the foundry sand raw materials from the crushing drum 6.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A casting sand raw material screening and recovery device, comprising a device body (1) provided with a crushing bin (3), characterized in that: A feed pipe (4) and a discharge pipe (5) are respectively formed on the inner walls of both sides of the crushing bin (3), and a crushing barrel (6) and a rotating shaft (7) are rotatably connected to the inner wall of the crushing bin (3), and the two ends of the crushing barrel (6) are respectively opposite to the pipe openings of the feed pipe (4) and the discharge pipe (5). The rotating shaft (7) is located at the center of the crushing barrel (6), and a plurality of groups of blades (8) distributed in an interlaced manner are fixedly connected to the outer side of the rotating shaft (7). A rotating mechanism for driving the rotating shaft (7) and the crushing barrel (6) to rotate relative to each other is provided in the device body (1), and push rods (13) distributed in a circumferential array are fixedly connected to the inner wall of the crushing barrel (6).

2. The foundry sand raw material screening and recovery device according to claim 1, characterized in that: The rotating mechanism comprises an inner gear ring (11), and a large gear (9) and a small gear (10) meshingly connected to each other, wherein the inner gear ring (11) is meshingly connected to the large gear (9), and the inner gear ring (11) is fixedly connected to one end of the crushing cylinder (6), and the large gear (9) and the small gear (10) are both rotatably connected to the side wall of the mounting groove opened inside the device body (1), and the axis of one side of the small gear (10) is fixedly connected to the end of the rotating shaft (7).

3. The foundry sand raw material screening and recovery device according to claim 1, characterized in that: A spirally distributed guide plate (12) is fixedly connected to the inner wall of the pulverizing cylinder (6), and the guide plate (12) and the push rod (13) are cross-fixedly connected to each other.

4. The foundry sand raw material screening and recovery device according to claim 1, characterized in that: A screening bin (2) is formed inside the device body (1), and the screening bin (2) is located directly below the crushing bin (3). Inclined plates (14) distributed in a linear array are respectively provided on the inner walls of both sides of the screening bin (2), and the two groups of inclined plates (14) are mirror-symmetrical to each other and are staggered with each other. A sieve plate (15) and a vibrator are provided on the inner wall of the screening bin (2), and the sieve plate (15) is located directly below the inclined plate (14), and the bottom of the sieve plate (15) is in contact with the vibrator.

5. The foundry sand raw material screening and recovery device according to claim 1, characterized in that: A lifting bin (16) is provided in the device body (1), a through-connection opening is formed between the lifting bin (16) and the screening bin (2), a through-connection connection pipe (17) is formed between the lifting bin (16) and the feed pipe (4), and a spiral auger (18) is rotatably connected to the top wall inside the lifting bin (16).

6. The foundry sand raw material screening and recovery device according to claim 1, characterized in that: Two servo motors (19) are respectively installed on the device body (1), and the two servo motors (19) are respectively fixedly connected to the top of the spiral auger (18) and one side of the large gear (9).

7. The foundry sand raw material screening and recovery device according to claim 4, characterized in that: The crushing cylinder (6) is arranged at an angle, and a through-type discharge port is formed at the bottom of the screening bin (2).

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