Sand floating machine

Abstract

The utility model discloses a sand floating machine and relates to the technical field of sand floating machines. Comprising a box body, a baffle plate with a plurality of air holes, a screen mesh with a plurality of screen holes, a driving device for driving the baffle plate to rotate, and a vibrating mechanism for driving the screen mesh to vibrate, wherein the baffle plate and the screen mesh are sequentially arranged in the box body from top to bottom; a sand ball outlet and a sand grain outlet are further formed in the side wall of the box body; by arranging the baffles, materials can be borne; by arranging the driving device, the baffle can be rotated after the sand floating operation is finished, so that a discharging channel is formed by the baffle and the inner wall of the box body, and materials can fall down; by arranging a screen, materials can be screened, and then sand grains and sand balls are classified; the vibrating machine for vibrating the screen is arranged, so that the screen can achieve the purpose of vibrating and screening, and the screening speed is increased; and the sand ball outlet and the sand grain outlet are formed, so that sand balls and sand grains screened by the screen can be collected respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of floating sand machines, in particular to a floating sand machine. Background Art

[0002] Sand molds made by the lost wax method are often used in precision casting products. The sand mold making process requires pre-making a wax mold according to the shape and size of the product, then applying a layer of slurry on the surface of the wax mold, and then placing the wax mold in a floating sand machine or a sand spraying machine to make the mold sand stick to the surface of the wax mold. The slurry and sand sticking actions are repeated until a sand mold of a certain thickness is formed on the surface of the wax mold. The wax mold is then heated to melt and flow out, thus making a sand mold shell that can be used to cast molten metal.

[0003] When the wax mold is floating sand or pouring sand, the slurry adheres to its surface and is in a wet state. Therefore, some of the slurry will fall into the inside of the floating sand machine and stick to the sand particles inside the floating sand machine to form some sand clumps. These sand clumps will adhere to the holes or grooves on the surface of the wax mold along with other normal sand particles, resulting in the inability to fill the normal sand particles, which in turn causes the sand mold shell to have insufficient strength, seriously affecting the quality of the sand mold shell.

[0004] In order to solve the above technical defects, in the prior art, after the floating sand operation is completed, all materials in the floating sand machine are often directly transferred to a filtering device for filtration. Since this operation is performed in two different instruments, it causes troublesome operation and increases the workload. Utility Model Content

[0005] The utility model aims to provide a floating sand machine, which can directly filter or screen the materials inside the floating sand machine after the floating sand operation is completed, without the need to transfer the materials to another instrument for filtering, so the operation is simpler and the workload is reduced.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A floating sand machine comprises a box body, a baffle with a plurality of air holes and a screen with a plurality of screen holes which are sequentially arranged in the box body from top to bottom, a driving device for driving the baffle to rotate, and a vibrating mechanism for driving the screen to vibrate; the side wall of the box body is also provided with a sand mass outlet and a sand grain outlet.

[0008] Preferably, one end of the baffle is rotatably mounted on the inner wall of the box, and the driving device includes a first hydraulic rod arranged on the inner wall of the box, a first sliding block arranged on the telescopic end of the first hydraulic rod, and a first sliding groove arranged on the bottom wall of the baffle and slidingly matched with the first sliding block.

[0009] Preferably, the vibration structure includes a rotating rod rotatably disposed in the housing, an eccentric wheel sleeved on the rotating rod, and a motor disposed outside the housing and fixedly connected to one end of the rotating rod.

[0010] Preferably, a second sliding block is provided at the edge of the screen, a groove is provided on the inner wall of the box body, and the second sliding block is slidably matched with the groove; and a vertical projection of the inner cavity of the box body is located within the second screen.

[0011] Preferably, the screen is arranged to be inclined downward toward a side wall provided with a hinge, and the sand mass outlet is arranged at the inclined lower end.

[0012] Preferably, the bottom wall of the box body is arranged at an inclination, and the sand outlet is arranged at the inclined lower end.

[0013] Preferably, the floating sand machine further comprises at least two connecting plates arranged on the inner wall of the box body, a second hydraulic rod arranged at the bottom end of each of the connecting plates, and a placement frame jointly arranged at the bottom end of the second hydraulic rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] By setting a baffle, the floating sand machine can carry materials (including sand particles) when performing floating sand operations; by setting a plurality of air holes on the baffle, the wind introduced by the fan can be blown from bottom to top along the air holes into the materials on the baffle to achieve the purpose of floating sand; by setting a driving device for driving the baffle to rotate, the baffle can be rotated after the floating sand operation is completed, so that the baffle and the inner wall of the box body form a feeding channel, so that the materials in the floating sand machine can fall along the feeding channel; by setting a screen under the baffle, the materials falling from the feeding channel can fall into the screen to screen the materials, thereby achieving the classification of sand particles and sand agglomerates; by setting a vibrator for vibrating the screen, the screen can achieve the purpose of vibration screening and improve the screening speed; by setting a sand agglomerate outlet and a sand particle outlet, the sand agglomerates and sand particles screened by the screen can be collected separately.

[0016] Through the synergistic effect of the above-mentioned devices, the materials in the floating sand machine can be directly screened without being transferred to another instrument for filtering, which makes the operation simpler and reduces the workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the cross-sectional structure of the utility model in the front view direction;

[0018] Figure 2 This is a schematic diagram of the structure of the screen in the utility model when viewed from above;

[0019] Figure 3This is a schematic diagram of the structure of the middle baffle of the utility model when viewed from above;

[0020] In the figure: 100-box, 110-baffle, 120-screen, 130-sand mass outlet, 140-sand particle outlet, 150-first hydraulic rod, 160-first slider, 170-first slide, 180-rotating rod, 190-eccentric wheel, 200-motor, 210-second slider, 220 groove, 230-connecting plate, 240-placing rack. DETAILED DESCRIPTION

[0021] Example 1

[0022] A floating sand machine, such as Figure 1 As shown, it includes a box body 100, a baffle 110 with multiple air holes and a screen 120 with multiple screen holes, which are sequentially arranged in the box body 100 from top to bottom, a driving device for driving the baffle 110 to rotate, and a vibration mechanism for driving the screen 120 to vibrate; the side wall of the box body 100 is also provided with a sand mass outlet 130 and a sand particle outlet 140, and a blocking block (not shown in the figure) is detachably provided in the sand mass outlet 130. Further, a top cover is provided on the top of the box body 100, and during screening, the top cover can be fixed to the box body 100 by bolts (existing technology, not shown in the figure); the top cover is provided with air holes (not shown in the figure). Furthermore, the floating sand machine also includes a fan arranged on the outer wall, the fan is connected to the inside of the box 100 through an air duct, and the air outlet end of the air duct is arranged between the baffle 110 and the filter (wherein, the fan and air duct are both existing technologies and are not drawn in the figure).

[0023] In specific implementation, the top cover is opened, and the wax model is placed in the box 100 and on the baffle 110. Thereafter, sand grains are added into the box 100, and the top cover is closed. In actual implementation, sand grains may be placed first, and then the wax model is placed. This is a prior art and will not be described in detail here. Thereafter, the top cover is closed. The fan is turned on. Under the action of the fan, the wind blows into the box 100 along the air duct, and then blows into the material (including only sand grains at this time) above the baffle 110 along a plurality of air holes. The sand grains achieve the purpose of floating sand during the blowing process. In the floating sand process, the slurry on the surface of the wax model falls into the sand grains to form sand clumps, so that the material becomes a mixture of sand grains and sand clumps. After the floating sand operation is completed, the driving device is driven to rotate the baffle 110 so that a certain gap is formed between the baffle 110 and the inner wall of the box 100, i.e., the material discharge channel. At this time, the material falls into the screen 120 along the material discharge channel under the action of gravity. At this time, a blocking block (not shown in the figure) is provided at the sand mass outlet 130, which will not affect the vibration of the screen 120, and a collection device is provided at the outer end of the sand mass outlet 130 and the sand particle outlet 140 (the structure is not limited here in the prior art, and any device that can achieve the purpose of collection can be used). Then the motor 200 is started, and under the action of the motor 200, the screen 120 vibrates up and down, thereby accelerating the screening of the material on its top surface, and the normal sand particles fall along the screen 120 to the bottom of the box 100, and the sand mass remains on the top of the screen 120. During the screening process, the sand particles falling to the bottom of the box 100 are collected along the sand particle outlet 140, and the sand mass remaining on the screen 120 is collected along the sand mass outlet 130. In addition, by setting the blocking block, the screen 120 can be prevented from diffusing the material below along the sand mass outlet 130 when vibrating up and down, resulting in insufficient material screening. After the screening is completed, the blocking block is removed.

[0024] Further, such as Figure 1 and Figure 3 As shown, one end of the baffle 110 is rotatably mounted on the inner wall of the box body 100 through a hinge, and the driving device includes a first hydraulic rod 150 arranged on the inner wall of the box body 100, a first slider 160 rotatably arranged on the telescopic end of the first hydraulic rod 150, and a first slide groove 170 arranged on the bottom wall of the baffle 110 and slidably matched with the first slider 160. Among them, the first hydraulic rod 150, the first slider 160 and the first slide groove 170 are set as at least one group. If there are multiple groups, it is necessary to ensure that multiple first hydraulic rods 150 operate synchronously. In specific implementation, the hydraulic rod is started to make the first slider 160 slide in the first slide groove 170, thereby causing the baffle 110 to rotate with the hinge as the rotating axis. When in floating sand, the baffle 110 just rotates to abut against the inner wall of the box body 100 (such as Figure 1 As shown), when screening, the baffle 110 can be rotated to form a certain angle with the horizontal direction, and the specific rotation angle depends on the actual situation.

[0025] Further, such as Figure 1 As shown, the vibration structure includes a rotating rod 180 rotatably arranged in the box 100 and located below the screen 120, an eccentric wheel 190 sleeved on the rotating rod 180, and a motor 200 arranged outside the box 100 and fixedly connected to one end of the rotating rod 180; the eccentric wheel 190 can contact the screen 120. Further, as Figure 1 and Figure 2 As shown, the edge of the screen 120 is provided with a second slider 210, and the inner wall of the box 100 is provided with a groove 230, and the second slider 210 is slidably matched with the side wall of the groove 230; the vertical projection of the inner cavity of the box 100 is located within the second screen 120, that is, the edge of the screen 120 can be completely located in the groove 230. In specific implementation, when screening, the motor 200 is started, so that the rotating shaft drives the eccentric wheel 190 to rotate synchronously, and when the eccentric wheel 190 is in continuous contact with the screen 120, the screen 120 can be moved up and down to achieve the purpose of vibration screening. During the up and down movement of the screen 120, the second slider 210 continuously moves up and down in the groove 230.

[0026] Furthermore, since the side of the material discharge channel formed between the baffle 110 and the box body 100 is the side away from the hinge, the material will directly fall to the left side of the screen 120 after falling along the material discharge channel (refer to Figure 1 In order to allow the material to be fully screened by the screen 120, such as Figure 1 As shown, the screen 120 is arranged downwardly and tilted toward the side wall provided with the hinge, and the sand mass outlet 130 is arranged at the lowest end of the tilt. This solution can prolong the contact time between the material and the screen 120, thereby improving the screening adequacy.

[0027] Further, such as Figure 1 As shown, the bottom wall of the box body 100 is inclined, and the sand outlet 140 is arranged at the lowest end of the inclination. The inclined arrangement facilitates the sand to slide directly to the sand outlet 140, thereby improving the convenience of discharging.

[0028] Further, such as Figure 1 As shown, the floating sand machine also includes at least two connecting plates 230 arranged on the inner wall of the box body 100, a second hydraulic rod arranged at the bottom end of each connecting plate 230, and a placement rack 240 arranged together at the bottom end of the second hydraulic rod. In this solution, by setting the placement rack 240 (the utility model does not limit its structure, and the existing technology can achieve the placement requirements in the floating sand machine), by setting the second hydraulic rod, it is convenient to move the placement rack 240 up and down, so as to improve the convenience of taking and placing the wax model on the placement rack 240.

[0029] In the description of this patent, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "longitudinal", "horizontal" and the like indicate the orientation or position relationship based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing this patent and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation of this patent.

Claims

1. A floating sand machine, characterized in that: The invention comprises a box body (100), a baffle (110) with a plurality of air holes and a screen (120) with a plurality of screen holes which are sequentially arranged in the box body (100) from top to bottom, a driving device for driving the baffle (110) to rotate, and a vibration mechanism for driving the screen (120) to vibrate; a sand mass outlet (130) and a sand grain outlet (140) are also arranged on the side wall of the box body (100).

2. A floating sand machine according to claim 1, characterized in that: One end of the baffle (110) is rotatably mounted on the inner wall of the box (100), and the driving device comprises a first hydraulic rod (150) arranged on the inner wall of the box (100), a first sliding block (160) arranged at the telescopic end of the first hydraulic rod (150), and a first sliding groove (170) arranged on the bottom wall of the baffle (110) and slidably matched with the first sliding block (160).

3. A floating sand machine according to claim 1, characterized in that: The vibration mechanism comprises a rotating rod (180) rotatably arranged in the box body (100), an eccentric wheel (190) sleeved on the rotating rod (180), and a motor (200) arranged outside the box body (100) and fixedly connected to one end of the rotating rod (180).

4. A floating sand machine according to claim 1, characterized in that: A second sliding block (210) is provided at the edge of the screen (120), a groove is provided around the inner wall of the box (100), and the second sliding block (210) is slidably matched with the groove; the vertical projection of the inner cavity of the box (100) is located within the screen (120).

5. A floating sand machine according to claim 4, characterized in that: The screen (120) is arranged to be inclined downward toward a side wall provided with a hinge, and the sand mass outlet (130) is arranged at the inclined lower end.

6. A floating sand machine according to claim 5, characterized in that: The bottom wall of the box body (100) is arranged to be inclined, and the sand outlet (140) is arranged at the inclined lower end.

7. A floating sand machine according to claim 1, characterized in that: It also includes at least two connecting plates (230) arranged on the inner wall of the box body (100), a second hydraulic rod arranged at the bottom end of each of the connecting plates (230), and a placement rack (240) arranged together at the bottom end of the second hydraulic rod.

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