A casting sand muller

Abstract

The utility model discloses a casting sand mixer, it includes sand mixing barrel, roll pressure wheel, stirring mechanism and unloading mechanism, the inner wall upper portion of sand mixing barrel is provided with the inner tooth ring, the annular baffle is provided below the inner tooth ring, and the stirring mechanism includes the rotating column setting in the sand mixing barrel inside, and the rotating column bottom end passes through sand mixing barrel bottom wall and is connected with the driving part, and the rotating column top end is provided with the top block, and the both sides of top block are provided with first drive plate and second drive plate respectively, and first drive plate top is provided with the transmission part, and first drive plate bottom is provided with the stirring part connected with transmission part, and one side of rotating column is provided with the connecting column, and one end of connecting column is rotatably connected with the middle part of roll pressure wheel end face, and the unloading mechanism includes the discharge gate of sand mixing barrel inner bottom wall and the baffle of inserting in the discharge gate, and the baffle one side is provided with the pull -out handle, the utility model discloses can accelerate the mixing effect of sand and auxiliary material.

Description

Technical Field

[0001] This utility model relates to the field of sand mixing technology, and in particular to a casting sand mixing machine. Background Technology

[0002] Sand mixers are key equipment in the foundry industry used to mix raw materials such as old sand, new sand, binders, and auxiliary materials to produce uniform molding sand or core sand. Through specific mixing mechanisms, such as rolling, rubbing, and stirring, they ensure that the components are evenly distributed, improve the strength and stability of the molding sand, and meet the quality requirements of the casting process. However, existing sand mixers only stir the sand particles through simple mixing and stirring, resulting in poor mixing effect and affecting the quality of the foundry sand. Therefore, we propose a foundry sand mixer. Summary of the Invention

[0003] The problem to be solved by this utility model is the poor mixing effect of sand mixers in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a casting sand mixer, including a sand mixing cylinder, a rolling wheel, a stirring mechanism, and a discharge mechanism. An internal toothed ring is provided on the upper part of the inner wall of the sand mixing cylinder, and an annular baffle plate is provided below the internal toothed ring. The stirring mechanism includes a rotating column disposed inside the sand mixing cylinder. The bottom end of the rotating column passes through the bottom wall of the sand mixing cylinder and is connected to a driving component. A top block is provided at the top of the rotating column. A first driving plate and a second driving plate are respectively disposed on both sides of the top block. A transmission component is provided at the top of the first driving plate, and a stirring component connected to the transmission component is provided at the bottom of the first driving plate. A connecting column is provided on one side of the rotating column, and one end of the connecting column is rotatably connected to the middle of the end face of the rolling wheel. The discharge mechanism includes a discharge port opened in the bottom wall of the sand mixing cylinder and a baffle block inserted at the discharge port. A push-pull handle is provided on one side of the baffle block.

[0005] In a preferred embodiment of the casting sand mixer of this utility model, the driving component includes an L-shaped mounting bracket disposed at the bottom of the sand mixing cylinder, a motor disposed on the L-shaped mounting bracket, the output end of the motor being connected to the input end of the gearbox, and the output end of the gearbox being connected to the rotating column.

[0006] In a preferred embodiment of the casting sand mixer of this utility model, the transmission component includes a dust cover. A first rotating rod and a second rotating rod are rotatably arranged on both sides of a first drive plate inside the dust cover. A gear and a first sprocket are respectively arranged on the outer wall of the first rotating rod. The gear meshes with an internal gear ring. A second sprocket is arranged on the outer wall of the second rotating rod. A chain is arranged between the first sprocket and the second sprocket.

[0007] In a preferred embodiment of the casting sand mixer of this utility model, the stirring component includes a rotating shaft, the second rotating rod passes through the first drive plate and is connected to the rotating shaft, a first connecting rod and a second connecting rod are respectively spaced apart on both sides of the rotating shaft, and a first stirring plate and a second stirring plate with opposite inclination directions are respectively provided at the ends of the first connecting rod and the ends of the second connecting rod.

[0008] In a preferred embodiment of the casting sand mixer of this utility model, a mounting rod is provided on one side of the bottom end of the first drive plate, and a first scraper is vertically provided at the bottom end of the mounting rod, with the side of the first scraper fitting closely to the inner wall of the sand mixing cylinder.

[0009] In a preferred embodiment of the casting sand mixer described in this utility model, a second scraper is provided at the bottom end of the second drive plate, the bottom end of the second scraper is in close contact with the outer wall of the rolling wheel, and a plurality of third stirring plates are evenly distributed around the end face of the rolling wheel.

[0010] In a preferred embodiment of the casting sand mixer of this utility model, mounting seats are provided on both sides of the discharge port at the bottom of the sand mixing cylinder, the stop block is slidably connected to the mounting seat, and the top of the stop block is flush with the inner bottom wall of the sand mixing cylinder.

[0011] In a preferred embodiment of the casting sand mixer described in this utility model, a support leg is provided at the bottom end of the sand mixing cylinder.

[0012] The beneficial effects of this utility model are as follows: the rotating column rotates under the drive of the driving component, which drives the rolling roller to roll and crush the molding sand and auxiliary materials. The transmission component on the first driving plate drives the rotating shaft to rotate on its own axis, and the rotating shaft rotates around the rotating column under the drive of the first driving plate. The first and second stirring plates on the rotating shaft rotate on their own axis and also rotate around the rotating column. In addition, multiple third stirring plates arranged circumferentially on the end face of the rolling roller rotate with the rotation of the rolling roller to stir. The combination of multiple stirring methods facilitates the thorough mixing of molding sand and auxiliary materials in the mixing cylinder. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a visual representation of a foundry sand mixer.

[0014] Figure 2 This is a bottom view of a foundry sand mixer.

[0015] Figure 3 This is a schematic diagram of the internal structure of a foundry sand mixer.

[0016] Figure 4 for Figure 3 Enlarged view of point A in the middle. Detailed Implementation

[0017] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] Reference Figures 1-4 This embodiment is a casting sand mixer, including a mixing cylinder 100, a rolling wheel 101, a stirring mechanism 300, and a discharge mechanism 400. An internal toothed ring 102 is provided on the upper part of the inner wall of the mixing cylinder 100, and an annular baffle plate 103 is provided below the internal toothed ring 102. The stirring mechanism 300 includes a rotating column 301 disposed inside the mixing cylinder 100. The bottom end of the rotating column 301 passes through the bottom wall of the mixing cylinder 100 and is connected to the driving component 302. A top block 303 is provided at the top of the rotating column 301, and two side plates are respectively provided on both sides of the top block 303. The device has a first drive plate 303a and a second drive plate 303b. The top of the first drive plate 303a is provided with a transmission component 304, and the bottom of the first drive plate 303a is provided with a stirring component 305 connected to the transmission component 304. A connecting column 104 is provided on one side of the rotating column 301. One end of the connecting column 104 is rotatably connected to the middle of the end face of the rolling wheel 101. The unloading mechanism 400 includes a discharge port opened in the bottom wall of the mixing cylinder 100 and a stop block 401 inserted at the discharge port. A push-pull handle 402 is provided on one side of the stop block 401.

[0019] Molding sand and auxiliary materials are placed into the mixing cylinder 100. The driving component 302 drives the rotating column 301 to rotate. The rotating column 301 drives the rolling wheel 101 to crush the molding sand and auxiliary materials. The transmission component 304 drives the agitator 305 to agitate the molding sand and auxiliary materials in the mixing cylinder 100, thereby accelerating the mixing between the molding sand and auxiliary materials. The annular baffle 103 can prevent material from splashing and adhering to the inner toothed ring 102, which would affect subsequent operations.

[0020] In this embodiment, the driving component 302 includes an L-shaped mounting bracket 302a disposed at the bottom of the sand mixing cylinder 100. A motor 302b is disposed on the L-shaped mounting bracket 302a. The output end of the motor 302b is connected to the input end of the gearbox 302c. The output end of the gearbox 302c is connected to the rotating column 301.

[0021] After the motor 302b is turned on, the motor 302b drives the rotating column 301 to rotate through the gearbox 302c.

[0022] In this embodiment, the transmission component 304 includes a dust cover 304a. Inside the dust cover 304a, a first rotating rod 304b and a second rotating rod 304c are rotatably arranged on both sides of a first drive plate 303a. A gear 304d and a first sprocket 304e are respectively arranged on the outer wall of the first rotating rod 304b. The gear 304d meshes with the internal gear ring 102. A second sprocket 304f is arranged on the outer wall of the second rotating rod 304c. A chain 304g is arranged between the first sprocket 304e and the second sprocket 304f.

[0023] The dust cover 304a has a hollow interior and an open end to prevent material from splashing and adhering to the gear 304d, the first sprocket 304e, the second sprocket 304f, and the chain 304g. When the rotating column 301 rotates, it drives the first drive plate 303a and the second drive plate 303b to rotate. Since the gear 304d meshes with the internal gear ring 102, the first drive plate 303a can drive the gear 304d to roll between the gear 304d and the internal gear ring 102. When the gear 304d rotates, it drives the first sprocket 304e, and the first sprocket 304e drives the second sprocket 304f to rotate through the chain 304g.

[0024] In this embodiment, the stirring component 305 includes a rotating shaft 305a, and a second rotating rod 304c passes through the first drive plate 303a and is connected to the rotating shaft 305a. A first connecting rod 305b and a second connecting rod 305c are respectively spaced apart on both sides of the rotating shaft 305a. A first stirring plate 305d and a second stirring plate 305e with opposite inclination directions are respectively provided at the ends of the first connecting rod 305b and the second connecting rod 305c.

[0025] When the second sprocket 304f rotates, it drives the second rotating rod 304c to rotate. The second rotating rod 304c then drives the rotating shaft 305a to rotate. The rotating shaft 305a drives the first stirring plate 305d and the second stirring plate 305e to rotate in opposite directions. At the same time, the rotating shaft 305a also rotates around the rotating column 301 under the drive of the first drive plate 303a. By rotating the rotating shaft 305a itself and rotating around the rotating column 301 at the same time, the variety of stirring methods of the first stirring plate 305d and the second stirring plate 305e is increased.

[0026] In this embodiment, a mounting rod 105 is provided on one side of the bottom end of the first drive plate 303a, and a first scraper 105a is vertically provided at the bottom end of the mounting rod 105. The side of the first scraper 105a is in close contact with the inner wall of the sand mixing cylinder 100.

[0027] The first scraper 105a can scrape off the molding sand and auxiliary materials adhering to the inner wall of the mixing cylinder 100.

[0028] In this embodiment, a second scraper 303c is provided at the bottom end of the second drive plate 303b. The bottom end of the second scraper 303c is in close contact with the outer wall of the rolling wheel 101. A plurality of third stirring plates 101a are evenly distributed around the end face of the rolling wheel 101.

[0029] When the rolling roller 101 compacts the molding sand and auxiliary materials, some materials may adhere to the outer wall of the rolling roller 101 and not be fully mixed. When the rolling roller 101 rotates, the bottom end of the second scraper 303c can scrape off the materials adhering to the outer wall of the rolling roller 101. At the same time, when the rolling roller 101 rotates, multiple third mixing plates 101a evenly distributed around the end face of the rolling roller 101 can mix the molding sand and auxiliary materials, accelerating the mixing effect between the molding sand and auxiliary materials.

[0030] In this embodiment, mounting bases 403 are provided on both sides of the discharge port at the bottom of the sand mixing cylinder 100. The baffle 401 is slidably connected to the mounting base 403, and the top of the baffle 401 is flush with the inner bottom wall of the sand mixing cylinder 100.

[0031] After the mixing of molding sand and auxiliary materials is completed, the baffle 401 is removed from the mounting base 403, and the material can be discharged from the bottom outlet of the mixing cylinder 100. After the discharge is completed, the baffle 401 is reinserted into the mounting base 403 to seal the outlet.

[0032] In this embodiment, a support leg 100a is provided at the bottom end of the sand mixing cylinder 100.

[0033] Working principle: Molding sand and auxiliary materials are placed into the mixing cylinder 100. The motor 302b is turned on, and the motor 302b drives the rotating column 301 to rotate through the gearbox 302c. The rotating column 301 drives the rolling roller 101 to crush the molding sand and auxiliary materials. When the rolling roller 101 crushes the molding sand and auxiliary materials, some materials will adhere to the outer wall of the rolling roller 101 and will not be fully mixed. When the rolling roller 101 rotates, the bottom end of the second scraper 303c can scrape off the material adhering to the outer wall of the rolling roller 101. At the same time, when the rolling roller 101 rotates, multiple third mixing plates 101a evenly distributed around the end face of the rolling roller 101 can mix the molding sand and auxiliary materials, accelerating the mixing effect between the molding sand and auxiliary materials. When the rotating column 301 rotates, it drives the first drive plate 303a and the second drive plate 303b to rotate. Due to the gear 304d and the internal gear ring 10 With 2 meshing, the first drive plate 303a can drive the gear 304d to roll with the internal gear ring 102. When the gear 304d rotates, it drives the first sprocket 304e to rotate. The first sprocket 304e drives the second sprocket 304f to rotate through the chain 304g. When the second sprocket 304f rotates, it drives the second rotating rod 304c to rotate. The second rotating rod 304c then drives the rotating shaft 305a to rotate. The rotating shaft 305a drives the first mixing plate 305d and the second mixing plate 305e to rotate in opposite directions. At the same time, the rotating shaft 305a also rotates around the rotating column 301 under the drive of the first drive plate 303a. Through the rotation of the rotating shaft 305a and its simultaneous rotation around the rotating column 301, the diversity of the mixing mode of the first mixing plate 305d and the second mixing plate 305e is increased, and the mixing effect of molding sand and auxiliary materials is accelerated.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A foundry sand mixer, characterized in that: The system includes a sand mixing cylinder (100), a rolling mill (101), a mixing mechanism (300), and a discharge mechanism (400). An internal toothed ring (102) is provided on the upper part of the inner wall of the sand mixing cylinder (100), and an annular baffle plate (103) is provided below the internal toothed ring (102). The mixing mechanism (300) includes a rotating column (301) disposed inside the sand mixing cylinder (100). The bottom end of the rotating column (301) passes through the bottom wall of the sand mixing cylinder (100) and is connected to a driving component (302). A top block (303) is provided at the top of the rotating column (301), and first driving components are respectively provided on both sides of the top block (303). The first drive plate (303a) and the second drive plate (303b) are provided with a transmission component (304) at the top of the first drive plate (303a) and a stirring component (305) connected to the transmission component (304) at the bottom of the first drive plate (303a). A connecting column (104) is provided on one side of the rotating column (301). One end of the connecting column (104) is rotatably connected to the middle of the end face of the rolling wheel (101). The unloading mechanism (400) includes a discharge port opened in the bottom wall of the mixing cylinder (100) and a stop block (401) inserted at the discharge port. A push-pull handle (402) is provided on one side of the stop block (401).

2. The casting sand mixer as described in claim 1, characterized in that: The drive unit (302) includes an L-shaped mounting bracket (302a) disposed at the bottom of the sand mixing cylinder (100), a motor (302b) disposed on the L-shaped mounting bracket (302a), the output end of the motor (302b) being connected to the input end of the gearbox (302c), and the output end of the gearbox (302c) being connected to the rotating column (301).

3. A casting sand mixer as described in claim 1, characterized in that: The transmission component (304) includes a dust cover (304a). Inside the dust cover (304a), a first rotating rod (304b) and a second rotating rod (304c) are rotatably arranged on both sides of a first drive plate (303a). A gear (304d) and a first sprocket (304e) are respectively arranged on the outer wall of the first rotating rod (304b). The gear (304d) meshes with an internal gear ring (102). A second sprocket (304f) is arranged on the outer wall of the second rotating rod (304c). A chain (304g) is arranged between the first sprocket (304e) and the second sprocket (304f).

4. A casting sand mixer as described in claim 3, characterized in that: The stirring component (305) includes a rotating shaft (305a), and the second rotating rod (304c) passes through the first drive plate (303a) and is connected to the rotating shaft (305a). A first connecting rod (305b) and a second connecting rod (305c) are respectively spaced apart on both sides of the rotating shaft (305a). A first stirring plate (305d) and a second stirring plate (305e) with opposite inclination directions are respectively provided at the ends of the first connecting rod (305b) and the second connecting rod (305c).

5. A casting sand mixer as described in claim 1, characterized in that: A mounting rod (105) is provided on one side of the bottom end of the first drive plate (303a), and a first scraper (105a) is vertically provided at the bottom end of the mounting rod (105). The side of the first scraper (105a) is in close contact with the inner wall of the sand mixing cylinder (100).

6. A casting sand mixer as described in claim 1, characterized in that: The second drive plate (303b) is provided with a second scraper (303c) at the bottom end. The bottom end of the second scraper (303c) is in close contact with the outer wall of the rolling wheel (101). Multiple third stirring plates (101a) are evenly distributed around the end face of the rolling wheel (101).

7. A casting sand mixer as described in claim 1, characterized in that: Mounting seats (403) are provided on both sides of the discharge port at the bottom of the sand mixing cylinder (100). The baffle (401) is slidably connected to the mounting seat (403), and the top of the baffle (401) is flush with the inner bottom wall of the sand mixing cylinder (100).

8. A casting sand mixer as described in claim 1, characterized in that: The bottom end of the mixing cylinder (100) is provided with a support leg (100a).

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