Casting sand mixer

Abstract

The utility model discloses a casting sand mixer which comprises an outer cylinder, a mixing assembly and a dustproof assembly, the mixing assembly is arranged in the outer cylinder, and the dustproof assembly is arranged in the outer cylinder; the mixing assembly comprises a driving box, a rotating shaft, a second rotating rod, a fifth bevel gear and a rotating drum; the driving box is fixedly connected to the top of the outer cylinder, the top of the driving box is fixedly connected with a motor, the driving end of the motor penetrates through the top of the outer cylinder and is fixedly connected with a first bevel gear, one side of the first bevel gear is in meshed connection with a second bevel gear, and the driving end of the second bevel gear is fixedly connected with a third bevel gear; the rotating shaft is rotationally connected to the inner top face of the driving box, and the bottom of the rotating shaft is fixedly connected with a fourth bevel gear. According to the utility model, by arranging the mixing assembly, auxiliary materials such as an adhesive can be uniformly coated on the surface of a main material, and by arranging the dustproof assembly, the influence on the operation of workers due to higher dust concentration can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry sand mixers, and particularly to a foundry sand mixer. Background Technique

[0002] A foundry sand mixer is a key device in the foundry industry for mixing raw materials such as used sand, new sand, binders, and auxiliary materials to make uniform molding sand or core sand. Through specific mixing mechanisms, such as rolling, rubbing, and stirring, it ensures the uniform distribution of each component, improves the strength and stability of the molding sand, and meets the requirements of the foundry process for the quality of the molding sand. Through the effective coating of auxiliary materials such as binders, it can ensure that the sand mold has good collapsibility, that is, the sand mold can be easily broken and separated after the casting solidifies, avoiding additional damage or defects to the casting.

[0003] The utility model with the authorization publication number CN220805399U provides a sand mixer for foundry, which also belongs to the technical field of "foundry sand mixers", and the protected claims are: "including a sand mixing barrel, a grinding component and a stirring component are arranged in the sand mixing barrel, the stirring component is located below the grinding component and is used for stirring materials, and a conveying component is arranged between the grinding component and the stirring component and is used for conveying materials; the grinding component includes a moving grinding block and a fixed grinding block, the moving grinding block is rotatably arranged in the sand mixing barrel, the fixed grinding block is fixedly arranged in the sand mixing barrel, and a gap is left between the moving grinding block and the fixed grinding block for grinding. In the present utility model, the sand material is conveyed into the sand mixing barrel, the sand material falls on the upper surfaces of the moving grinding block and the fixed grinding block, and then slides into the gap between the moving grinding block and the fixed grinding block for crushing and grinding. The crushed materials are mixed more uniformly, and the quality of the molding sand can be improved".

[0004] In this equipment, although mixing can be carried out, the equipment cannot effectively coat auxiliary materials such as binders on the surface of sand grains, and the dust concentration during the operation of the sand mixer is relatively high, and no effective dust prevention measures are implemented. Therefore, we propose a foundry sand mixer. Content of the Utility Model

[0005] The purpose of the present utility model is to provide a foundry sand mixer to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the present utility model provides the following technical solutions:

[0007] A foundry sand mixer includes an outer cylinder, a mixing component, and a dust prevention component. The mixing component is arranged in the outer cylinder, and the dust prevention component is arranged in the outer cylinder;

[0008] The mixing component includes a drive box, a rotating shaft, a second rotating rod, a fifth helical gear, and a rotating cylinder; the drive box is fixedly connected to the top of the outer cylinder, a motor is fixedly connected to the top of the drive box, the drive end of the motor penetrates through the top of the outer cylinder and is fixedly connected to a first helical gear, a second helical gear is meshed and connected to one side of the first helical gear, and the drive end of the second helical gear is fixedly connected to a third helical gear; the rotating shaft is rotatably connected to the inner top surface of the drive box, a fourth helical gear is fixedly connected to the bottom of the rotating shaft, the fourth helical gear is meshed and connected to the third helical gear, and a first rotating rod is fixedly connected to the bottom of the fourth helical gear; the second rotating rod is rotatably sleeved outside the first rotating rod; the fifth helical gear is fixedly sleeved outside the second rotating rod, and the fifth helical gear is meshed and connected to the third helical gear; the rotating cylinder is fixedly connected to the bottom end of the second rotating rod, and the bottom end of the first rotating rod extends into the rotating cylinder and is fixedly connected to a stirrer.

[0009] Preferably: a feeding pipe is connected through the outside of the rotating cylinder, and a plurality of notches are formed in the top of the rotating cylinder.

[0010] Preferably: a bottom cylinder is rotatably arranged at the bottom of the rotating cylinder, and a plurality of rotating wheels are rotatably connected between the bottom cylinder and the rotating cylinder, and all the rotating wheels are arranged around the central axis of the rotating cylinder.

[0011] Preferably: a material accumulation box is fixedly connected to the bottom of the bottom cylinder, and a discharge port is formed in the outside of the material accumulation box.

[0012] Preferably: a discharge groove is fixedly connected to the outside of the discharge port.

[0013] Preferably: the dust-proof component includes a connecting plate; the connecting plate is fixedly connected to the outside of the outer cylinder, a wind box is fixedly connected to the outside of the connecting plate, a connecting pipe is fixedly connected to the outer end of the wind box, and a pump body is fixedly connected to the outer end of the connecting pipe.

[0014] Preferably: the number of the dust-proof components is set to two groups, and the two groups are arranged oppositely.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] 1. By setting up a mixing component, the main material and auxiliary materials are both input into the rotating cylinder through the feeding pipes. Then, the motor is started. The motor drives the first helical gear to rotate, which in turn drives the second helical gear to rotate. The rotation of the second helical gear drives the third helical gear to rotate, and the rotation of the third helical gear drives the fourth helical gear and the fifth helical gear to rotate in opposite directions. The fourth helical gear drives the stirrer to rotate through the first rotating rod to mix and stir the materials. At the same time, the fifth helical gear drives the rotating cylinder to rotate in the opposite direction under the support of the bottom cylinder through the second rotating rod. The opposite rotation of the stirrer and the rotating cylinder intensifies the friction and collision between the main material and the auxiliary materials, making it easier for the auxiliary materials to coat the surface of the main material. In short, auxiliary materials such as binders can be evenly coated on the surface of the main material.

[0017] 2. By setting up a dust-proof component, two pump bodies are started. The two pump bodies filter the generated dust through the air box and then extract it through the connecting pipe, which can avoid affecting the workers' operation due to high dust concentration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the internal structure of the outer cylinder in the present utility model;

[0020] Figure 3 is in the present utility model Figure 2 cross-sectional view;

[0021] Figure 4 is in the present utility model Figure 3 enlarged view of part A;

[0022] Figure 5 is a schematic diagram of the partial structure of the present utility model.

[0023] In the figure: 1. Outer cylinder; 2. Mixing component; 3. Dust-proof component; 201. Driving box; 202. Motor; 203. First helical gear; 204. Second helical gear; 205. Third helical gear; 206. Rotating shaft; 207. Fourth helical gear; 208. First rotating rod; 209. Second rotating rod; 210. Fifth helical gear; 211. Rotating cylinder; 212. Stirrer; 301. Connecting plate; 302. Air box; 303. Connecting pipe; 304. Pump body; 4. Feeding pipe; 5. Notch; 6. Bottom cylinder; 7. Runner; 8. Accumulating box; 9. Discharge port; 10. Discharge groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1

[0026] As Figures 1-5 shown, in this embodiment, a casting sand mixer includes an outer cylinder 1, a mixing assembly 2, and a dust-proof assembly 3. The mixing assembly 2 is arranged inside the outer cylinder 1, and the dust-proof assembly 3 is arranged inside the outer cylinder 1;

[0027] The mixing assembly 2 includes a drive box 201, a rotating shaft 206, a second rotating rod 209, a fifth helical gear 210, and a rotating cylinder 211. The drive box 201 is fixedly connected to the top of the outer cylinder 1. A motor 202 is fixedly connected to the top of the drive box 201. The driving end of the motor 202 penetrates through the top of the outer cylinder 1 and is fixedly connected to a first helical gear 203. A second helical gear 204 is meshed and connected to one side of the first helical gear 203. The driving end of the second helical gear 204 is fixedly connected to a third helical gear 205. The rotating shaft 206 is rotatably connected to the inner top surface of the drive box 201. A fourth helical gear 207 is fixedly connected to the bottom of the rotating shaft 206. The fourth helical gear 207 is meshed and connected to the third helical gear 205. A first rotating rod 208 is fixedly connected to the bottom of the fourth helical gear 207. The second rotating rod 209 is rotatably sleeved outside the first rotating rod 208. The fifth helical gear 210 is fixedly sleeved outside the second rotating rod 209. The fifth helical gear 210 is meshed and connected to the third helical gear 205. The rotating cylinder 211 is fixedly connected to the bottom end of the second rotating rod 209. The bottom end of the first rotating rod 208 extends into the rotating cylinder 211 and is fixedly connected to a stirrer 212.

[0028] During specific implementation, the main materials and auxiliary materials are both input into the rotating cylinder 211 through the feeding pipe 4, and then the motor 202 is started. The motor 202 drives the first helical gear 203 to rotate, which in turn drives the second helical gear 204 to rotate. The rotation of the second helical gear 204 drives the third helical gear 205 to rotate. The rotation of the third helical gear 205 drives the fourth helical gear 207 and the fifth helical gear 210 to rotate in opposite directions. The fourth helical gear 207 drives the stirrer 212 to rotate through the first rotating rod 208 to mix and stir the materials. At the same time, the fifth helical gear 210 drives the rotating cylinder 211 to rotate in the opposite direction under the support of the bottom cylinder 6 through the second rotating rod 209. The opposite rotation of the stirrer 212 and the rotating cylinder 211 intensifies the friction and collision between the main materials and the auxiliary materials, making it easier for the auxiliary materials to coat the surface of the main materials. In short, auxiliary materials such as binders can be evenly coated on the surface of the main materials.

[0029] In addition, it should be noted that there are multiple limiting rods arranged in the driving box 201. The multiple limiting rods are used to prevent the first helical gear 203, the second helical gear 204, the third helical gear 205, the fourth helical gear 207 and the fifth helical gear 210 from disengaging from the meshing and from getting out of position. In addition, a valve body is arranged in the material conveying pipe 4. The arrangement of the material conveying pipe 4 does not affect the rotation of the rotary drum 211. At the same time, when the rotary drum 211 stops rotating, the material conveying pipe 4 can convey materials. After the material conveying is completed, the external connection is disconnected, and then the stirring and mixing can be started.

[0030] Furthermore, a material conveying pipe 4 is connected through the outside of the rotary drum 211, and a plurality of notches 5 are opened at the top of the rotary drum 211. By arranging the material conveying pipe 4 for material conveying, and by arranging the notches 5, dust can be scattered to the outside of the rotary drum 211, which is convenient for extracting the dust.

[0031] Furthermore, a bottom cylinder 6 is rotatably arranged at the bottom of the rotary drum 211, and a plurality of rotating wheels 7 are rotatably connected between the bottom cylinder 6 and the rotary drum 211. The plurality of rotating wheels 7 are all arranged around the central axis of the rotary drum 211. By arranging the plurality of rotating wheels 7, the rotary drum 211 can rotate on the bottom cylinder 6.

[0032] Furthermore, a material accumulating box 8 is fixedly connected to the bottom of the bottom cylinder 6, and a discharge port 9 is arranged on the outside of the material accumulating box 8; a discharge chute 10 is fixedly connected to the outside of the discharge port 9. The mixed material falls into the material accumulating box 8 through the bottom cylinder 6, and then is discharged from the device through the discharge port 9 and the discharge chute 10 in the material accumulating box 8.

[0033] Embodiment Two

[0034] On the basis of Embodiment One, in order to make up for the problem of dust appearing in Embodiment One, a dust-proof component 3 is arranged.

[0035] As Figure 1 shown, the dust-proof component 3 includes a connecting plate 301; the connecting plate 301 is fixedly connected to the outside of the outer cylinder 1, a wind box 302 is fixedly connected to the outside of the connecting plate 301, a connecting pipe 303 is fixedly connected to the outer end of the wind box 302, and a pump body 304 is fixedly connected to the outer end of the connecting pipe 303.

[0036] During specific implementation, two pump bodies 304 are started, and the dust generated by the two pump bodies 304 is filtered through the wind box 302 and then extracted from the device through the connecting pipe 303.

[0037] Working principle: First, both the main material and the auxiliary material are input into the rotating cylinder 211 through the material conveying pipe 4. Then, the motor 202 is started. The motor 202 drives the first helical gear 203 to rotate, and then drives the second helical gear 204 to rotate. The rotation of the second helical gear 204 drives the third helical gear 205 to rotate. The rotation of the third helical gear 205 drives the fourth helical gear 207 and the fifth helical gear 210 to rotate in opposite directions. The fourth helical gear 207 drives the stirrer 212 to rotate through the first rotating rod 208 to stir and mix the materials. At the same time, the fifth helical gear 210 drives the rotating cylinder 211 to rotate in the opposite direction under the support of the bottom cylinder 6 through the second rotating rod 209. The opposite rotation of the stirrer 212 and the rotating cylinder 211 intensifies the friction and collision between the main material and the auxiliary material, making it easier for the auxiliary material to coat the surface of the main material. In short, auxiliary materials such as binders can be evenly coated on the surface of the main material. The mixed materials fall into the material accumulation box 8 through the bottom cylinder 6, and then are discharged from the device through the discharge port 9 and the discharge groove 10 in the material accumulation box 8. During the operation of the mixing assembly 2, the dust-proof assembly 3 is started. Specifically, first, two pump bodies 304 are started. The two pump bodies 304 filter the generated dust through the air box 302 and then extract it from the device through the connecting pipe 303.

[0038] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0039] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A foundry muller, comprising an outer cylinder (1), a mixing assembly (2) and a dust-proof assembly (3), characterized in that, The mixing component (2) is arranged inside the outer cylinder (1), and the dust-proof component (3) is arranged inside the outer cylinder (1); The mixing component (2) includes a drive box (201), a rotating shaft (206), a second rotating rod (209), a fifth helical gear (210) and a rotating cylinder (211); the drive box (201) is fixedly connected to the top of the outer cylinder (1), a motor (202) is fixedly connected to the top of the drive box (201), the driving end of the motor (202) penetrates through the top of the outer cylinder (1) and is fixedly connected to a first helical gear (203), a second helical gear (204) is meshed and connected to one side of the first helical gear (203), and the driving end of the second helical gear (204) is fixedly connected to a third helical gear (205); the rotating shaft (206) is rotatably connected to the inner top surface of the drive box (201), a fourth helical gear (207) is fixedly connected to the bottom of the rotating shaft (206), the fourth helical gear (207) is meshed and connected to the third helical gear (205), and a first rotating rod (208) is fixedly connected to the bottom of the fourth helical gear (207); the second rotating rod (209) is rotatably sleeved outside the first rotating rod (208); the fifth helical gear (210) is fixedly sleeved outside the second rotating rod (209), and the fifth helical gear (210) is meshed and connected to the third helical gear (205); the rotating cylinder (211) is fixedly connected to the bottom end of the second rotating rod (209), and the bottom end of the first rotating rod (208) extends into the rotating cylinder (211) and is fixedly connected to a stirrer (212).

2. The foundry muller according to claim 1, wherein, A feeding pipe (4) is connected through the outside of the rotating cylinder (211), and a plurality of notches (5) are formed in the top of the rotating cylinder (211).

3. A foundry muller according to claim 1, characterized in that, A bottom cylinder (6) is rotatably arranged at the bottom of the rotating cylinder (211), and a plurality of rotating wheels (7) are rotatably connected between the bottom cylinder (6) and the rotating cylinder (211), and the plurality of rotating wheels (7) are all arranged around the central axis of the rotating cylinder (211).

4. A foundry muller according to claim 3, characterized in that, A material accumulation box (8) is fixedly connected to the bottom of the bottom cylinder (6), and a discharge port (9) is formed in the outside of the material accumulation box (8).

5. A casting sand mixer according to claim 4, characterized in that A discharge chute (10) is fixedly connected to the outside of the discharge port (9).

6. The casting sand mixer according to claim 1, wherein, The dust-proof component (3) includes a connecting plate (301); the connecting plate (301) is fixedly connected to the outside of the outer cylinder (1), a wind box (302) is fixedly connected to the outside of the connecting plate (301), a connecting pipe (303) is fixedly connected to the outer end of the wind box (302), and a pump body (304) is fixedly connected to the outer end of the connecting pipe (303).

7. The foundry muller according to claim 6, wherein, The number of the dust-proof components (3) is set to two groups, and the two groups are arranged oppositely.

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