CN217550361U - Casting sand multistage screening plant - Google Patents

Abstract

The utility model discloses a casting sand multistage screening device, relating to the technical field of screening equipment and comprising a feeding part and a screening part; the feeding part comprises a feeding bracket, a feeding hopper and a feeding motor; the screening part comprises a screening bracket, a screening roller, a screening motor, a discharge hopper, a plurality of layers of screens, a discharge port and a spiral baffle; the utility model discloses simple structure, convenient operation when screening the operation, only needs an operation workman can accomplish the screening operation, screening cylinder and helical baffle's cooperative use for the effect of screening is more accurate, great promotion the screening effect of casting sand.

Description

Casting sand multistage screening plant

Technical Field

The utility model relates to a screening equipment technical field specifically is a casting sand multi-stage screening device.

Background

Before the casting sand mixes, need use screening plant to sieve for the casting sand granule is even, is favorable to follow-up processing to use, and at present, when casting sand screening plant uses among the prior art, the efficiency and the speed of screening are all low relatively, influence production efficiency.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a casting sand multi-stage screening device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a casting sand multistage screening device comprises a feeding part and a screening part; the feeding part comprises a feeding support, two feeding slideways which are inclined towards the left side and are parallel to each other are arranged on the right side of the feeding support, a feeding hopper is arranged on the two feeding slideways together, a steering pulley is arranged at the top end of each of the two feeding slideways, a feeding rope is arranged around the steering pulley, one end of the feeding rope is connected to the feeding hopper, and the other end of the feeding rope is connected to a shaft lever of a feeding motor arranged on the ground on the left side of the feeding support; the screening part comprises a screening bracket arranged at the bottom, a screening roller obliquely arranged to the left lower side is arranged on the top surface of the screening bracket, a bearing is arranged at the part of the screening roller, which is in contact with the screening bracket, a screening motor is arranged at the upper part of the screening bracket, and a shaft rod of the screening motor is provided with a driving gear and is meshed with an external gear arranged outside the screening roller; the screening cylinder right-hand member still is provided with down the hopper.

Furthermore, the screening roller comprises a plurality of layers of coaxial cylindrical screens which are sequentially arranged from inside to outside, a sealed roller wall is arranged on the outermost side, the screen hole diameters of the plurality of layers of screens are sequentially reduced from inside to outside, the inner layers of the leftmost ends of the plurality of layers of screens and the roller wall can exceed the outer layers, the exceeding parts are non-porous roller walls, and discharge holes are respectively formed below the leftmost ends of the screening roller for each layer of screens and the roller wall.

Preferably, the discharge port is fixedly arranged on the screening bracket, and a circular arc-shaped material receiving groove matched with the corresponding screen or drum wall is arranged above the discharge port.

Furthermore, spiral baffles are arranged between two adjacent layers of screens in the multiple layers of screens and inside the innermost layer of screens.

Furthermore, the bottom of the discharging hopper is also provided with an adjusting inserting plate.

Preferably, the drum wall is provided with an access hole and an access cover plate.

Preferably, the multi-layer screen is replaceable.

Preferably, the screening motor is a variable frequency speed regulating motor.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses simple structure, convenient operation when screening the operation, only needs an operation workman can accomplish the screening operation, screening cylinder and helical baffle's use in coordination for the effect of screening is more accurate, great promotion the screening effect of casting sand.

2. The setting of access hole makes the multilayer screen cloth can change to be applicable to the screening operation of more various foundry sand.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of a discharge port;

FIG. 4 is a schematic view with an access opening;

in the figure: the device comprises a feeding part-1, a feeding support-11, a feeding hopper-12, a diverting pulley-13, a feeding rope-14, a feeding motor-15, a screening part-2, a screening support-21, a screening roller-22, a bearing-23, a screening motor-24, a driving gear-25, an external gear-26, a discharging hopper-27, an adjusting inserting plate-271, a multi-layer screen-28, a roller wall-29, an access hole-291, a discharging hole-30 and a spiral baffle-31.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiments of the present invention is described below clearly and completely with reference to the accompanying drawings and the specific embodiments.

Referring to fig. 1-4, fig. 1 is a schematic view of the present invention; FIG. 2 is a schematic structural view of the present invention; FIG. 3 is a schematic view of a discharge port; fig. 4 is a schematic view with an access opening.

The utility model provides a casting sand multi-stage screening device, which is used for carrying out multi-stage screening operation on casting sand so as to ensure that the particle size of the screened casting sand is kept uniform and consistent, and comprises a feeding part 1 and a screening part 2; the feeding part 1 comprises a feeding support 11 arranged on the ground, two feeding slideways which incline to the left side and are parallel to each other are arranged on the right side of the feeding support 11, and a feeding hopper 12 is jointly arranged on the two feeding slideways and used for feeding casting sand to be screened into the screening part 2 so as to be used for further screening; the top ends of the two feeding slideways are respectively provided with a steering pulley 13, a feeding rope 14 is arranged around the steering pulley 13, one end of the feeding rope 14 is connected to the feeding hopper 12, and the other end of the feeding rope 14 is connected to a shaft lever of a feeding motor 15 arranged on the ground on the left side of the feeding support 11 and used for driving the feeding hopper 12 to carry out feeding operation through the feeding motor 15; the screening part 2 comprises a screening bracket 21 arranged at the bottom, a screening roller 22 obliquely arranged towards the lower left is arranged on the top surface of the screening bracket 21, a bearing 23 is arranged at the part of the screening roller 22, which is in contact with the screening bracket 21, and is used for assisting the screening roller 22 to rotate, a screening motor 24 is further arranged at the upper part of the screening bracket 21, a driving gear 25 is arranged on the shaft rod of the screening motor 24 and is meshed with an outer gear 26 arranged outside the screening roller 22, so that the screening roller 22 can be driven to rotate by the screening motor 24, and screening operation is completed; the right end of the screening roller 22 is also provided with a discharging hopper 27 for receiving the casting sand fed by the feeding hopper 12 and gradually discharging the casting sand into the screening roller 22, so as to facilitate screening operation.

The screening roller 22 comprises a plurality of layers of coaxial cylindrical screens 28 which are arranged in sequence from inside to outside, and a sealed roller wall 29 is arranged on the outermost side, the screen hole diameters of the plurality of layers of screens 28 are reduced in sequence from inside to outside, and the specific screen hole diameters are correspondingly arranged according to the casting sand to be screened; during the screening operation, the casting sand to be screened is directly added into the innermost screen 28, and the screening operation is started through the rotation of the screening drum 22, so that the casting sand can be screened according to different particle sizes; the inner layer of the leftmost end of the multi-layer screen 28 and the drum wall 29 both exceed the outer layer by a section, and the exceeding parts are non-porous drum walls so as to discharge the screened casting sand for use, and a discharge port 30 is respectively arranged below the leftmost end of the screening drum 22 for each layer of screen and drum wall and is respectively used for discharging the casting sand with different particle size ranges.

The discharge port 30 is fixedly arranged on the screening bracket 21, and a circular arc-shaped material receiving groove matched with the corresponding screen or drum wall is arranged above the material outlet and is used for receiving the discharge of the corresponding screen or drum wall and filling the received discharge into a corresponding container through an outlet at the bottom.

In order to increase the screening efficiency and prolong the screening time of the casting sand in the screening roller 22, a spiral baffle plate 31 is arranged between two adjacent layers of screen meshes, so that the screening distance of the casting sand in the roller is longer and the screening time is longer in the screening process, and the screening effect is more perfect.

The bottom of hopper 27 still is provided with adjusts picture peg 271 for the adjustment the unloading speed of the casting sand in the hopper 27 down, when screening the operation, can be according to the nimble adjustment unloading speed of actual screening efficiency.

The screening motor 24 is a variable frequency speed regulating motor, and in the screening operation process, the rotating speed of the screening roller 22 can be adjusted by adjusting the frequency of the screening motor 24, so that the screening efficiency is ensured.

In addition for make the utility model provides a life-span is longer, can be applicable to the screening of more various casting sand simultaneously be provided with access hole 291 and installation and maintenance apron on the drum wall 29 for use such as overhauls, change multilayer screen cloth 28, can be timely when multilayer screen cloth goes wrong overhauls, perhaps changes corresponding screen cloth, in order to be applicable to the screening of more various casting sand.

The utility model discloses simple structure, convenient operation when screening the operation, only needs an operation workman can accomplish the screening operation, screening cylinder and helical baffle's use in coordination for the effect of screening is more accurate, great promotion the screening effect of casting sand.

While embodiments of the invention have been illustrated and described, it is to be understood that the embodiments described are only some embodiments of the invention and not all embodiments. Based on the embodiments of the present invention, it can be understood to those skilled in the art that all other embodiments obtained by making various changes, modifications, substitutions and alterations to these embodiments without making creative work under the condition of not departing from the principle and spirit of the present invention belong to the protection scope of the present invention.

Claims (8)

1. The utility model provides a multistage screening plant of casting sand which characterized in that: comprises a feeding part (1) and a screening part (2); the feeding part (1) comprises a feeding support (11), two feeding slideways which are inclined towards the left side and are parallel to each other are arranged on the right side of the feeding support (11), a feeding hopper (12) is jointly arranged on the two feeding slideways, a steering pulley (13) is arranged at the top end of each of the two feeding slideways, a feeding rope (14) is arranged by bypassing the steering pulley (13), one end of the feeding rope (14) is connected to the feeding hopper (12), and the other end of the feeding rope is connected to a shaft lever of a feeding motor (15) arranged on the ground on the left side of the feeding support (11); the screening part (2) comprises a screening bracket (21) arranged at the bottom, a screening roller (22) obliquely arranged towards the left lower side is arranged on the top surface of the screening bracket (21), a bearing (23) is arranged at the part of the screening roller (22) contacted with the screening bracket (21), a screening motor (24) is arranged at the upper part of the screening bracket (21), a driving gear (25) is arranged on the shaft rod of the screening motor (24) and is meshed with an external gear (26) arranged outside the screening roller (22); the right end of the screening roller (22) is also provided with a discharging hopper (27).

2. The casting sand multi-stage screening apparatus according to claim 1, wherein: the screening drum (22) comprises a plurality of layers of coaxial cylindrical screens (28) which are sequentially arranged from inside to outside, a sealed drum wall (29) is arranged on the outermost side, the screen hole diameters of the plurality of layers of screens (28) are sequentially reduced from inside to outside, the inner layers of the layers of screens (28) and the drum wall (29) at the leftmost end exceed the outer layers, the exceeding parts are non-porous drum walls, and a discharge hole (30) is respectively formed below the leftmost end of the screening drum (22) for each layer of screens and the drum wall.

3. The multistage screening device of foundry sand of claim 2, wherein: the discharge port (30) is fixedly arranged on the screening bracket (21), and a circular arc-shaped material receiving groove matched with the corresponding screen or drum wall is arranged above the discharge port.

4. The foundry sand multi-stage screening device of claim 3, wherein: spiral baffles (31) are arranged between two adjacent layers of screens in the multilayer screens (28) and inside the innermost layer of screens.

5. The multistage screening device of foundry sand of claim 4, wherein: the bottom of the discharging hopper (27) is also provided with an adjusting inserting plate (271).

6. The casting sand multi-stage screening apparatus according to any one of claims 2 to 5, wherein: and an access hole (291) is formed in the drum wall (29) and an access cover plate is installed on the drum wall.

7. The casting sand multi-stage screening apparatus according to claim 6, wherein: the multi-layer screen (28) is replaceable.

8. The foundry sand multi-stage screening device of claim 7, wherein: the screening motor (24) is a variable-frequency speed-regulating motor.

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