Lost foam sand screening device

Abstract

The utility model relates to the technical field of screening devices, in particular to an evanescent mode sand screening device which not only can feed sand materials to a screen in a quantitative mode and prevent the screening effect from being influenced by too much or too much materials fed each time, but also can extract and separate dust generated during screening and prevent the surrounding environment from being influenced by dust diffusion. Comprising a supporting mechanism; the sand screening device further comprises a screening mechanism, a feeding mechanism, a dust collection mechanism and a vibration mechanism, the screening mechanism is installed on the supporting mechanism and screens sand grains, the feeding mechanism is installed on the supporting mechanism and quantitatively feeds sand to the screening mechanism, and the dust collection mechanism is installed on the supporting mechanism and absorbs dust generated in the screening process. The vibration mechanism is installed on the dust collection mechanism and drives the screening mechanism to vibrate.

Description

Technical Field

[0001] This utility model relates to the technical field of screening devices, and in particular to a lost foam sand screening device. Background Technology

[0002] During the production process of lost foam casting, dust is easily generated due to the high temperature. In addition, coating shells and iron oxide may also be mixed in the casting sand. Therefore, a vibrating screen is needed to screen the casting sand during processing to remove dust and impurities.

[0003] Existing lost foam sand screening devices, such as the lost foam sand processing vibrating screen disclosed in utility model patent application number 202021562160.2, mainly include support feet fixed below the outer tail of the vibrating screen, and motor support feet fixed below the middle of the vibrating screen. The vibrating screen is fixed to the ground by the support feet and motor support feet. There are two vibrating motors, which are fixed in the middle of the motor support feet. The upper part of the vibrating screen is divided into upper and lower layers. In use, the foundry sand is screened by the screen plate and then screened by the vibrating screen. After two screenings, the foundry sand is recovered from the sand outlet.

[0004] However, during the screening process, sand particles generate dust through friction. Most existing screening devices lack effective dust removal structures, which harms the operating environment. Moreover, the screening capacity of screening devices is limited, and existing screening devices have difficulty controlling the feed rate, which can easily affect the screening effect. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a lost foam sand screening device that can not only quantitatively feed sand onto the screen to avoid the effect of excessive or insufficient feeding each time, but also extract and separate the dust generated during screening to prevent the dust from spreading and affecting the surrounding environment.

[0006] This utility model discloses a lost foam sand screening device, including a support mechanism; it also includes a screening mechanism, a feeding mechanism, a dust collection mechanism, and a vibration mechanism. The screening mechanism is installed on the support mechanism and screens the sand particles. The feeding mechanism is installed on the support mechanism and quantitatively feeds the sand to the screening mechanism. The dust collection mechanism is installed on the support mechanism and absorbs the dust generated during the screening process. The vibration mechanism is installed on the dust collection mechanism and drives the screening mechanism to vibrate. The sand is fed into the feeding mechanism, which feeds the sand into the screening mechanism in batches and in quantitative quantities for screening. The dust collection mechanism is activated to extract the dust generated during the screening process, and at the same time, the vibration mechanism is driven to vibrate the screening mechanism, thereby increasing the screening rate and preventing sand particles from sticking to the screen.

[0007] Preferably, the support mechanism includes shock-absorbing legs, a reinforcing bracket, a protective cover, four sets of guide columns, four sets of sealing heads, and four sets of springs. The bottom ends of the four sets of shock-absorbing legs are connected to the ground, the bottom end of the reinforcing bracket is connected to the top end of the four sets of shock-absorbing legs, the bottom end of the protective cover is connected to the top end of the reinforcing bracket, the top end of the four sets of guide columns is connected to the bottom end of the reinforcing bracket, the bottom end of the four sets of sealing heads is connected to the top end of the four sets of guide columns, and the four sets of springs are respectively fitted onto the four sets of guide columns. By setting four sets of shock-absorbing legs, the impact of the vibration of the screening mechanism on the ground is reduced; by setting a protective cover, dust overflow can be prevented; by setting four sets of guide columns and four sets of sealing heads, the screening mechanism is limited; and by setting four sets of springs, the vibration of the screening mechanism is facilitated.

[0008] Preferably, the screening mechanism includes a fine screen, a partition, a coarse screen, side baffles, and a collection hopper. The fine screen is slidably mounted on four sets of guide columns. The bottom end of the partition is connected to the top end of the fine screen. The bottom end of the coarse screen is connected to the top end of the partition and is slidably mounted on the four sets of guide columns. The bottom end of the side baffle is connected to the top end of the coarse screen. The top end of the collection hopper is connected to the bottom end of the fine screen. The feeding mechanism quantitatively conveys the sand to the coarse screen. The coarse screen screens out coarse sand particles, the partition screens out medium sand particles, and the fine sand particles enter the collection hopper for collection and discharge. The side baffles and partitions prevent the sand from falling off the sides during vibration.

[0009] Preferably, the screening mechanism is tilted at 10° relative to the support mechanism. By tilting the screening mechanism, the screening effect can be guaranteed, and the flow and discharge of sand particles on the fine and coarse screens can be accelerated, thereby improving the screening efficiency.

[0010] Preferably, the feeding mechanism includes a feeding hopper, a stepper motor, a reducer, a drive shaft, and four sets of discharge plates. The bottom end of the feeding hopper is connected to the top of the protective cover, the bottom end of the stepper motor is connected to the top of the protective cover, the bottom end of the reducer is connected to the top of the protective cover, the drive shaft is rotatably installed inside the feeding hopper, and the four sets of discharge plates are all installed on the drive shaft. The operator feeds the sand into the feeding hopper, starts the stepper motor, and the stepper motor drives the drive shaft to rotate 90° each time through the reducer. The drive shaft rotates, and each time a certain amount of sand is fed onto the coarse screen.

[0011] Preferably, the dust collection mechanism includes a collection box, a cyclone separator, an air inlet pipe, and an air collection hopper. The bottom end of the collection box is connected to the top end of the protective cover, the bottom end of the cyclone separator is connected to the inside of the top end of the collection box, the air inlet pipe is installed on the cyclone separator, and the bottom end of the air collection hopper is connected to the inside of the top end of the protective cover and also connected to the inside of the air inlet pipe. When the cyclone separator is activated, it draws dust from inside the protective cover through the air inlet pipe and the air collection hopper. The cyclone separator separates the dust from the air, and the dust settles into the collection box for collection.

[0012] Preferably, the vibration mechanism includes a connecting seat, a starting vibrator, and an air supply hose. The connecting seat is installed on the collection hopper, the starting vibrator is installed on the connecting seat, and the air supply hose is installed on the starting vibrator and communicates with the exhaust port of the cyclone separator. The cyclone separator delivers the separated air to the starting vibrator through the air supply hose. The starting vibrator drives the connecting seat and the collection hopper to vibrate. The vibration area is increased by setting the connecting seat.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the sand is fed into the feeding mechanism, which feeds the sand into the screening mechanism in batches and quantities for screening. The dust collection mechanism is activated to extract the dust generated during the screening process. At the same time, the vibration mechanism is driven to make the screening mechanism vibrate, thereby improving the screening rate and preventing sand particles from sticking to the screen. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is a cross-sectional isometric structural diagram of the support mechanism and screening mechanism of this utility model;

[0016] Figure 3 This is a cross-sectional isometric structural diagram of the feeding mechanism of this utility model;

[0017] Figure 4 This is a cross-sectional isometric structural diagram of the dust collection mechanism and vibration mechanism of this utility model.

[0018] The attached diagram is labeled as follows: 01, Support mechanism; 11, Shock-absorbing leg; 12, Reinforcing bracket; 13, Protective cover; 14, Guide column; 15, Sealing head; 16, Spring; 02, Screening mechanism; 21, Fine screen; 22, Partition plate; 23, Coarse screen; 24, Side baffle; 25, Collection hopper; 03, Feeding mechanism; 31, Feeding hopper; 32, Stepper motor; 33, Reducer; 34, Drive shaft; 35, Discharge plate; 04, Dust collection mechanism; 41, Collection box; 42, Cyclone separator; 43, Air inlet pipe; 44, Air collection hopper; 05, Vibration mechanism; 51, Connecting seat; 52, Pneumatic vibrator; 53, Air supply hose. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0020] Example 1

[0021] This utility model discloses a lost foam sand screening device, including a support mechanism 01; it also includes a screening mechanism 02, a feeding mechanism 03, a dust collection mechanism 04, and a vibration mechanism 05. The screening mechanism 02 is installed on the support mechanism 01 and screens the sand particles. The feeding mechanism 03 is installed on the support mechanism 01 and quantitatively feeds the sand to the screening mechanism 02. The dust collection mechanism 04 is installed on the support mechanism 01 and absorbs the dust generated during the screening process. The vibration mechanism 05 is installed on the dust collection mechanism 04 and drives the screening mechanism 02 to vibrate. The support mechanism 01 includes shock-absorbing legs 11, reinforcing supports 12, a protective cover 13, four sets of guide columns 14, four sets of sealing heads 15, and four sets of springs 16. The bottom ends of the four sets of shock-absorbing legs 11 are connected to the ground, and the reinforcing supports 12... The bottom end is connected to the top end of four sets of shock-absorbing support legs 11, the bottom end of the protective cover 13 is connected to the top end of the reinforcing bracket 12, the top end of four sets of guide columns 14 is connected to the bottom end of the reinforcing bracket 12, the bottom end of four sets of sealing heads 15 is connected to the top end of four sets of guide columns 14 respectively, and four sets of springs 16 are respectively fitted on four sets of guide columns 14; the screening mechanism 02 includes a fine screen 21, a partition 22, a coarse screen 23, a side baffle 24, and a collection hopper 25. The fine screen 21 is slidably installed on the four sets of guide columns 14, the bottom end of the partition 22 is connected to the top end of the fine screen 21, the bottom end of the coarse screen 23 is connected to the top end of the partition 22 and the coarse screen 23 is slidably installed on the four sets of guide columns 14, the bottom end of the side baffle 24 is connected to the top end of the coarse screen 23, and the top end of the collection hopper 25 is connected to the top end of the four sets of guide columns 14. The bottom end of the fine screen 21 is connected; the screening mechanism 02 is tilted 10° relative to the support mechanism 01; the feeding mechanism 03 includes a feeding hopper 31, a stepper motor 32, a reducer 33, a drive shaft 34, and four sets of discharge plates 35. The bottom end of the feeding hopper 31 is connected to the top of the protective cover 13, the bottom end of the stepper motor 32 is connected to the top of the protective cover 13, the bottom end of the reducer 33 is connected to the top of the protective cover 13, the drive shaft 34 is rotatably installed inside the feeding hopper 31, and the four sets of discharge plates 35 are all installed on the drive shaft 34. When it is working, firstly, the worker puts the sand into the feeding hopper 31, starts the stepper motor 32, and the stepper motor 32 drives the drive shaft 34 to rotate 90° each time through the reducer 33. The drive shaft 34 drives the transmission... The shaft 34 rotates, and each time a certain amount of sand is fed onto the coarse screen 23. The coarse screen 23 screens out coarse sand particles, the baffle 22 screens out medium sand particles, and the fine sand particles enter the collection hopper 25 for collection and discharge. The side baffle 24 and the baffle 22 prevent the sand from falling from the side during vibration. The inclined setting of the screening mechanism 02 can not only ensure the screening effect, but also accelerate the flow and discharge of sand particles on the fine screen 21 and the coarse screen 23, thus improving the screening efficiency. The four sets of shock-absorbing legs 11 reduce the impact of the vibration of the screening mechanism 02 on the ground. The protective cover 13 can prevent dust from overflowing. The four sets of guide columns 14 and four sets of sealing heads 15 limit the movement of the screening mechanism 02. The four sets of springs 16 facilitate the vibration of the screening mechanism 02.

[0022] Example 2

[0023] like Figures 1 to 4 As shown, this utility model discloses a lost foam sand screening device based on Embodiment 1; the dust collection mechanism 04 includes a collection box 41, a cyclone separator 42, an air inlet pipe 43, and an air collection hopper 44. The bottom end of the collection box 41 is connected to the top end of the protective cover 13, the bottom end of the cyclone separator 42 communicates with the inside of the top end of the collection box 41, the air inlet pipe 43 is installed on the cyclone separator 42, and the bottom end of the air collection hopper 44 communicates with the inside of the top end of the protective cover 13 and also communicates with the inside of the air inlet pipe 43; the vibration mechanism 05 includes a connecting seat 51, a starting vibrator 52, and... The air supply hose 53 and the connecting seat 51 are installed on the collecting hopper 25. The starting vibrator 52 is installed on the connecting seat 51, and the air supply hose 53 is installed on the starting vibrator 52 and communicates with the exhaust port of the cyclone separator 42. During operation, the operator first feeds sand into the feeding hopper 31, starts the stepper motor 32, and the stepper motor 32 drives the drive shaft 34 to rotate 90° each time through the reducer 33. The drive shaft 34 rotates, quantitatively feeding sand onto the coarse screen 23 each time, and the coarse screen 23 filters out the coarse sand particles. The baffle 22 screens out medium-sized sand particles, while fine sand particles enter the collection hopper 25 for collection and discharge. Side baffles 24 and baffle 22 prevent sand from falling from the sides during vibration. The inclined screening mechanism 02 ensures screening efficiency and accelerates the flow and discharge of sand particles on the fine and coarse screens 21 and 23, thus improving screening efficiency. Four sets of shock-absorbing legs 11 reduce the impact of the screening mechanism 02's vibration on the ground. A protective cover 13 prevents dust from overflowing. Four sets of guide columns 14 and four sets of sealing heads are also included. 15 limits the screening mechanism 02. Four sets of springs 16 are set to facilitate the vibration of the screening mechanism 02. The cyclone separator 42 is started. The cyclone separator 42 sucks in the dust in the protective cover 13 through the air inlet pipe 43 and the air collection bucket 44. The cyclone separator 42 separates the dust and air. The dust settles into the collection box 41 for collection. The cyclone separator 42 delivers the separated air to the start vibrator 52 through the air delivery hose 53. The start vibrator 52 drives the connecting seat 51 and the collection bucket 25 to vibrate. The vibration area is increased by setting the connecting seat 51.

[0024] The stepper motor 32, reducer 33, cyclone separator 42 and starting exciter 52 of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lost foam sand screening device comprising a support mechanism (01); characterized in that, The sand screening device also comprises a screening mechanism (02), a feeding mechanism (03), a dust suction mechanism (04) and a vibrating mechanism (05), the screening mechanism (02) is installed on the supporting mechanism (01) and screens sand particles, the feeding mechanism (03) is installed on the supporting mechanism (01) and quantitatively feeds sand to the screening mechanism (02), the dust suction mechanism (04) is installed on the supporting mechanism (01) and absorbs dust generated in the screening process, and the vibrating mechanism (05) is installed on the dust suction mechanism (04) and drives the screening mechanism (02) to vibrate.

2. A lost foam sand screening apparatus as defined in claim 1, wherein, The supporting mechanism (01) comprises four shock-absorbing legs (11), a reinforcing support (12), a protective cover (13), four sets of guide columns (14), four sets of blocking heads (15) and four sets of springs (16), the bottom ends of the four shock-absorbing legs (11) are connected with the ground, the bottom end of the reinforcing support (12) is connected with the top ends of the four shock-absorbing legs (11), the bottom end of the protective cover (13) is connected with the top end of the reinforcing support (12), the top ends of the four sets of guide columns (14) are connected with the bottom end of the reinforcing support (12), the bottom ends of the four sets of blocking heads (15) are respectively connected with the top ends of the four sets of guide columns (14), and the four sets of springs (16) are respectively sleeved on the four sets of guide columns (14).

3. A lost foam sand screening apparatus as defined in claim 2, wherein, The screening mechanism (02) comprises a fine screen (21), a partition plate (22), a coarse screen (23), a side baffle (24) and a collecting hopper (25), the fine screen (21) is slidingly installed on the four sets of guide columns (14), the bottom end of the partition plate (22) is connected with the top end of the fine screen (21), the bottom end of the coarse screen (23) is connected with the top end of the partition plate (22) and the coarse screen (23) is slidingly installed on the four sets of guide columns (14), the bottom end of the side baffle (24) is connected with the top end of the coarse screen (23), and the top end of the collecting hopper (25) is connected with the bottom end of the fine screen (21).

4. A lost foam sand screening apparatus as defined in claim 1, wherein, The screening mechanism (02) is inclined by 10° relative to the supporting mechanism (01) as a whole.

5. An lost foam sand screening apparatus as defined in claim 2 wherein, The feeding mechanism (03) comprises a feeding hopper (31), a stepping motor (32), a speed reducer (33), a transmission shaft (34) and four sets of discharge plates (35), the bottom end of the feeding hopper (31) is in communication with the top end of the inside of the protective cover (13), the bottom end of the stepping motor (32) is connected with the top end of the protective cover (13), the bottom end of the speed reducer (33) is connected with the top end of the protective cover (13), the transmission shaft (34) is rotatably installed in the feeding hopper (31), and the four sets of discharge plates (35) are all installed on the transmission shaft (34).

6. A lost foam sand screening apparatus as defined in claim 2, wherein, The dust suction mechanism (04) comprises a collecting box (41), a cyclone separator (42), an air inlet pipe (43) and a gas collecting hopper (44), the bottom end of the collecting box (41) is connected with the top end of the protective cover (13), the bottom end of the cyclone separator (42) is in communication with the top end of the inside of the collecting box (41), the air inlet pipe (43) is installed on the cyclone separator (42), and the bottom end of the gas collecting hopper (44) is in communication with the top end of the inside of the protective cover (13) and the inside of the air inlet pipe (43).

7. A lost foam sand screening apparatus as defined in claim 6, wherein, The vibration mechanism (05) comprises a connecting seat (51), a starting exciter (52) and a gas conveying hose (53), the connecting seat (51) is installed on the collecting hopper (25), the starting exciter (52) is installed on the connecting seat (51), and the gas conveying hose (53) is installed on the starting exciter (52) and communicates with the inside of the exhaust port of the cyclone separator (42).

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