Old sand renovation treatment device for casting

Abstract

The utility model relates to a used sand renovating device for casting, which comprises a body, a crushing cavity is arranged in the body, the plumb cross section of the crushing cavity is circular, a grinding roller is rotatably and eccentrically arranged in the crushing cavity, and a crushing part is arranged at the inner edge of the grinding roller; and the crushing piece can crush the part, entering the crushing cavity, of the sand mold in a rotating state. According to the utility model, the crushing part is arranged at the inner edge of the grinding roller, so that a part of sand mold entering the grinding roller can be crushed, meanwhile, the crushed sand mold can be ground into molding sand through eccentric rotation of the grinding roller, the two steps are carried out in the crushing cavity, and the structure integrates two crushing modes, is small in size and is beneficial to feeding.

Description

Technical Field

[0001] The utility model belongs to the technical field of old sand renovation, in particular to an old sand renovation processing device for casting. Background Art

[0002] Refurbishment of old sand refers to the secondary processing of the sand mold after pouring in order to achieve the purpose of recycling and reuse. Generally, the sand mold after pouring is crushed by a crushing device.

[0003] Existing crushing methods are generally divided into two types: hammer crushing and grinding crushing. However, hammer crushing can only break large sand molds into small pieces, which cannot make the molding sand meet the use requirements. Although grinding crushing can break sand molds into particles, large pieces of sand molds will move relative to the grinding roller due to insufficient friction after being put into the sand molds, resulting in material jamming. Therefore, when recycling sand molds, they often need to be crushed by hammer first and then by grinding.

[0004] For example, the Chinese patent with application number "202021415535.2" and name "Sand mold waste recovery device" achieves the purpose of sand mold recovery by connecting hammer crushing and grinding crushing in series; but due to the need to deploy two crushing components, the device will be larger in size, occupying space, and will increase the difficulty of loading, see application number "202021415535.2" Figure 1 . Utility Model Content

[0005] In view of the problems of the prior art, the utility model provides a device for refurbishing and processing old sand for casting, and the specific technical scheme is as follows:

[0006] The foundry used sand renovation processing device comprises a main body, wherein the main body has a crushing chamber, the plumb bob section of the crushing chamber is a circle, a grinding roller is rotatably and eccentrically arranged in the crushing chamber, and a crushing piece is provided at the inner edge of the grinding roller;

[0007] The crushing element can crush the part of the sand mold entering the crushing chamber in a rotating state.

[0008] As a further technical solution of the utility model, the main body is further provided with a feeding channel connected to the crushing chamber, and the feeding channel is connected to the feeding port of the main body.

[0009] As a further technical solution of the utility model, a sieve hole is provided on one side of the crushing chamber facing the gravity direction, and the sieve hole allows molding sand to pass through.

[0010] As a further technical solution of the utility model, the crushing member includes an extension arm connected to the outside of the grinding roller and a crushing head connected to the other end of the extension arm.

[0011] As a further technical solution of the utility model, the end of the crushing head that first contacts the sand mold in the rotating state is a tip.

[0012] As a further technical solution of the utility model, the extension arm is of hollow design.

[0013] The beneficial effects of the utility model are as follows:

[0014] (1) In the present application, a crushing piece is arranged at the inner edge of the grinding roller, so that part of the sand mold entering the crushing chamber can be crushed. At the same time, the eccentric rotation of the grinding roller can grind the crushed sand mold into molding sand, and both steps occur in the crushing chamber. This structure combines the two crushing methods into one, and has a small volume, which is convenient for loading.

[0015] (2) In the present application, the end of the crushing head that first contacts the sand mold in the rotating state is the tip, which can ensure the crushing effect on the sand mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structural schematic diagram of the foundry used sand renovation processing device is shown;

[0017] Figure 2 A schematic diagram showing the expanded state of the foundry used sand renovation processing device;

[0018] Figure 3 A schematic diagram of the internal structure of the body is shown;

[0019] Figure 4 The schematic diagram of the structure of the crushing chamber is shown;

[0020] Figure 5 The schematic diagram of the structure of the grinding roller and the crushing element is shown;

[0021] Figure 6 A schematic diagram of the structure of the crushing parts is shown.

[0022] Legend:

[0023] 100, main body; 110, shell; 120, door panel; 210, crushing chamber; 211, sieve hole; 220, feeding channel; 230, grinding roller; 240, crushing part; 241, extension arm; 242, crushing head; 243, channel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0025] Figure 1 The overall structural schematic diagram of the foundry used sand renovation processing device is shown; Figure 2 A schematic diagram showing the expanded state of the foundry used sand renovation processing device; Figure 1 and Figure 2 In the figure, the old sand refurbishment processing device for casting includes a main body 100, which includes a shell 110 and a door panel 120 rotatably connected to the open end of the shell 110. The door panel 120 can be rotated to open. At this time, the main body 100 is in an unfolded state, and sand can be taken or the internal structure can be inspected. Under normal circumstances, the door panel 120 is rotated to close to ensure that the crushing of the internal sand mold is not affected.

[0026] Figure 3 A schematic diagram of the internal structure of the body 100 is shown; Figure 4 The schematic diagram of the structure of the crushing chamber 210 is shown; Figure 3 and Figure 4 In the embodiment, a crushing chamber 210 and a feeding channel 220 connected to the crushing chamber 210 are provided in the main body 100. The plumb bob cross section of the crushing chamber 210 is a circle. The feeding channel 220 is connected to the feeding port of the main body 100. The material enters from the feeding port and falls into the crushing chamber 210 through the feeding channel 220 for crushing. A sieve hole 211 is provided on one side of the crushing chamber 210 facing the gravity direction. The crushing chamber 210 is connected to the main body 100 through the sieve hole 211. After the material is crushed, it can be discharged from the sieve hole 211 in time due to the influence of gravity to avoid the secondary coagulation of the molding sand. The aperture of the sieve hole 211 can be set according to the needs, and the molding sand passing through the sieve hole 211 can meet the use requirements.

[0027] Figure 5 A schematic diagram of the structure of the grinding roller 230 and the crushing member 240 is shown; Figure 5In the crushing chamber 210, a grinding roller 230 is rotatably and eccentrically arranged, and a gap is formed between the outer edge of the grinding roller 230 and the inner wall of the crushing chamber 210, and a crushing piece 240 is formed at the inner edge of the grinding roller 230. When the grinding roller 230 is driven by an external force, it rotates around the center of the crushing chamber 210 and enters a rotating state. The crushing piece 240 can crush the part of the sand mold entering the crushing chamber 210 in the rotating state; when the material enters from the feed channel 220, due to the large volume of the sand mold, a part of the sand mold enters the crushing chamber 210 and hits the surface of the grinding roller 230, and the other part is still stuck in the feed channel 220. As the grinding roller 230 rotates around the rotation center of the crushing chamber 210, the crushing piece 240 can hit the material. Part of the sand mold that falls into the crushing chamber 210 is broken to avoid material jamming, and the eccentric rotation of the grinding roller 230 can grind the part crushed by the crushing piece 240, so as to form a crushing process for the sand mold. This structure combines the two crushing methods into one, and has a small volume, which is conducive to loading. It should be noted that the outer edge of the grinding roller 230 refers to the position of the outer surface of the grinding roller 230 farthest from the center of the crushing chamber 210, and the inner edge of the grinding roller 230 refers to the position of the outer surface of the grinding roller 230 closest to the center of the crushing chamber 210. In this embodiment, three groups of crushing pieces 240 are arranged, which are evenly distributed on the inner edge side of the grinding roller 230, but the number and distribution of the crushing pieces 240 should not be understood as limitations on the present application.

[0028] Figure 6 A schematic diagram of the structure of the crushing member 240 is shown; Figure 6 In the figure, the crushing member 240 includes an extension arm 241 connected to the outside of the grinding roller 230 and a crushing head 242 connected to the other end of the extension arm 241. The end of the crushing head 242 that first contacts the sand mold in the rotating state is the tip; during the rotation of the crushing head 242, the tip contacts the sand mold first, which can reduce the contact area with the sand mold, thereby increasing the pressure and crushing the sand mold smoothly. There is a gap between the crushing head 242 and the inner wall of the crushing chamber 210 to avoid interference; a channel 243 is opened in the extension arm 241 to prevent the sand mold from being driven to rotate by the extension arm 241 and unable to contact the outer edge of the grinding roller 230. The actual purpose is that the extension arm 241 is hollow in design and cannot form a barrier to the sand mold.

[0029] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A device for refurbishing and treating used foundry sand, comprising a main body (100), characterized in that: The body (100) has a crushing chamber (210) in it, the plumb bob cross section of the crushing chamber (210) is circular, a grinding roller (230) is rotatably and eccentrically arranged in the crushing chamber (210), and a crushing member (240) is provided at the inner edge of the grinding roller (230); The crushing element (240) can crush the portion of the sand mold entering the crushing chamber (210) in a rotating state.

2. The device for refurbishing used foundry sand according to claim 1, characterized in that: The main body (100) also has a feed channel (220) connected to the crushing chamber (210), and the feed channel (220) is connected to the feed port of the main body (100).

3. The device for refurbishing used foundry sand according to claim 1 or 2, characterized in that: A sieve hole (211) is provided on one side of the crushing chamber (210) facing the gravity direction, and the sieve hole (211) allows molding sand to pass through.

4. The device for refurbishing used foundry sand according to claim 3, characterized in that: The crushing member (240) comprises an extension arm (241) connected to the outside of the grinding roller (230) and a crushing head (242) connected to the other end of the extension arm (241).

5. The device for refurbishing used foundry sand according to claim 4, characterized in that: The end of the crushing head (242) that first contacts the sand mold in the rotating state is the tip.

6. The device for refurbishing used foundry sand according to claim 4, characterized in that: The extension arm (241) is of hollow design.

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