Screening device for foundry clay sand treatment

Abstract

The screening device for casting clay sand treatment comprises a base, a rear supporting ring sleeve and a front supporting ring sleeve are fixedly installed at the two ends of the upper surface of the base respectively, and a power mechanism for driving a screening cylinder to rotate is fixedly installed on the upper surface of the base. A screening cylinder is rotationally installed in the rear supporting ring sleeve and the front supporting ring sleeve. A discharging mechanism is fixedly mounted on the outer side of the front supporting ring sleeve and rotationally connected with one end of the screening barrel. A hopper is fixedly installed on the outer side of the rear supporting ring sleeve, the hopper is rotationally connected with the other end of the screening barrel, and the hopper communicates with the interior of the screening barrel. By means of the overall arrangement, in the casting clay sand screening process, when casting clay sand is accumulated, the casting clay sand accumulated on the upper portion can be prevented from being discharged from the discharging port, and therefore multiple screening can be fully conducted on the casting clay sand, and the whole casting clay sand screening device is more reliable in the casting clay sand screening process.

Description

Technical Field

[0001] The utility model relates to the field of casting, and in particular to a screening device for treating casting clay sand. Background Art

[0002] The screening device for processing foundry clay sand is an important equipment for processing clay sand in the foundry industry. Its main function is to remove impurities and particulate matter in the clay sand through the screening process to ensure the purity and quality of the sand, thereby meeting the requirements of the casting process.

[0003] After searching, a clay sand screening device disclosed in Chinese patent number CN 217491655 U includes a vibrating screen, the vibrating screen is tilted and has an outlet at the lower end, the vibrating screen includes a screening section at its higher end and a conveying section between the screening section and the outlet; it also includes a mounting plate fixedly arranged above the conveying section, the mounting plate is detachably connected with a magnetic plate covering the conveying section; it also includes a fixedly arranged vibration motor, and the output end of the vibration motor is vertically arranged and fixedly connected to the vibration screen, and the magnetic plate is separated from the vibration screen during the process of the vibration motor driving the vibration screen. The utility model can smoothly separate the casting residue from the coarse sand.

[0004] However, in the above-mentioned clay sand screening device, if a large amount of clay sand is accumulated in one piece during the screening process of clay sand, since the vibrating screen adopts an inclined structure, the clay sand accumulated on the top will be discharged through the outlet before the screening is completed, resulting in leakage.

[0005] Therefore, it is very necessary to invent a screening device for the processing of foundry clay sand. Utility Model Content

[0006] In order to solve the above technical problems, the utility model provides a technical solution adopted by a screening device for processing foundry clay sand: a screening device for processing foundry clay sand, comprising a base, wherein: a rear support ring sleeve and a front support ring sleeve are respectively fixedly installed at both ends of the upper surface of the base, and a power mechanism for driving the screening drum to rotate is fixedly installed on the upper surface of the base, and the screening drum is rotatably installed in the rear support ring sleeve and the front support ring sleeve; a discharging mechanism is fixedly installed on the outside of the front support ring sleeve, and the discharging mechanism is rotatably connected to one end of the screening drum, and the discharging mechanism is communicated with the screening drum; a hopper is fixedly installed on the outside of the rear support ring sleeve, and the hopper is rotatably connected to the other end of the screening drum, and the hopper is communicated with the inside of the screening drum;

[0007] Preferably, the screening cylinder comprises an outer cylinder, an intermediate cylinder and an inner cylinder, and the intermediate cylinder is fixedly installed inside the outer cylinder, and the inner cylinder is fixedly installed inside the intermediate cylinder; the inner surfaces of the outer cylinder, the intermediate cylinder and the inner cylinder are respectively fixedly installed with auger blades, and the surfaces of the intermediate cylinder and the inner cylinder are respectively provided with screening holes of different diameters; the length of the intermediate cylinder is greater than the length of the outer cylinder, and one end of the intermediate cylinder extends out from the outer cylinder and the front supporting ring sleeve; the length of the inner cylinder is greater than the length of the intermediate cylinder, and one end of the inner cylinder extends out from the intermediate cylinder and the front supporting ring sleeve; the outer cylinder, the intermediate cylinder and the inner cylinder are coaxial; the outer cylinder is rotatably installed in the rear supporting ring sleeve and the front supporting ring sleeve; the ends of the outer cylinder, the intermediate cylinder and the inner cylinder close to the front supporting ring sleeve are rotatably connected to the discharge mechanism; the hopper is connected to the inner cylinder;

[0008] Preferably, a gear ring is sleeved and fixedly mounted on the outer surface of the outer cylinder, and the gear ring is meshingly connected with the power mechanism.

[0009] Preferably, the power mechanism includes a rolling support and a motor, and the rolling support is fixedly mounted on both sides of the upper surface of the base, and the motor is fixedly mounted on one side of the base close to the front support ring sleeve; the output end of the motor is meshedly connected with the gear ring through a gear; the rolling support is in rolling contact with the outer cylinder.

[0010] Preferably, an annular rail is sleeved and fixedly mounted on the outer surface of the outer cylinder, and the annular rail is in rolling contact with the rolling bearing.

[0011] Preferably, a feed hole is provided at one end where the outer cylinder, the middle cylinder and the inner cylinder are connected, and the feed hole is communicated with the inner cylinder; the discharge port of the hopper extends into the inner cylinder through the feed hole, and the discharge port of the hopper is rotatably connected to the feed hole.

[0012] Preferably, the discharge mechanism includes an outer support cover, an intermediate support cover, an inner support cover and a discharge pipe, and the outer support cover is fixedly installed on the outer side of the front support ring sleeve; the outer side of the outer support cover is fixedly installed with an intermediate support cover, and the outer side of the intermediate support cover is fixedly installed with an inner support cover, and the outer support cover, the intermediate support cover and the inner support cover are connected; a discharge pipe is fixedly installed below each of the outer support cover, and is connected with the corresponding discharge pipe; the intermediate support cover is rotatably sleeved on one end of the intermediate cylinder; the inner support cover is rotatably sleeved on one end of the inner cylinder; the discharge pipe on the outer support cover is connected to the inside of the outer cylinder; the discharge pipe on the intermediate support cover is connected to the inside of the intermediate cylinder; the discharge pipe on the inner support cover is connected to the inside of the inner cylinder.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] The overall arrangement of the utility model can prevent the foundry clay sand accumulated on the upper part from being discharged from the discharge port when the foundry clay sand accumulates during the screening process of the foundry clay sand, thereby being able to fully perform multiple screening on the foundry clay sand, making the overall screening process of the foundry clay sand more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a partial cutaway structural schematic diagram of the utility model.

[0017] Figure 3 It is a schematic diagram of the exploded structure of the screening drum and the discharging mechanism of the utility model.

[0018] In the figure:

[0019] Base 1, rear support ring sleeve 2, front support ring sleeve 3, rolling bearing 4, motor 5, outer cylinder 6, middle cylinder 7, inner cylinder 8, outer support cover 9, middle support cover 10, inner support cover 11, discharge pipe 12, annular rail 13, gear ring 14, feed hole 15, hopper 16, auger blade 17, screening hole 18. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0021] In the description of the embodiments, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0022] The utility model is further described below in conjunction with the accompanying drawings: Example

[0023] Reference Figure 1-3 , a screening device for processing foundry clay sand, comprising a base 1, wherein: a rear support ring sleeve 2 and a front support ring sleeve 3 are fixedly installed at both ends of the upper surface of the base 1, respectively, so as to ensure the stability and smoothness of the screening drum during rotation, and a power mechanism for driving the screening drum to rotate is fixedly installed on the upper surface of the base 1, and the screening drum is rotatably installed in the rear support ring sleeve 2 and the front support ring sleeve 3, so as to screen the foundry clay sand; a discharging mechanism is fixedly installed on the outer side of the front support ring sleeve 3, so as to classify and discharge the screened foundry clay sand, and the discharging mechanism is rotatably connected to one end of the screening drum; a hopper 16 is fixedly installed on the outer side of the rear support ring sleeve 2, and the hopper 16 is rotatably connected to the other end of the screening drum, so as to ensure the stability and smoothness of the screening drum during rotation, and the hopper 16 is communicated with the inside of the screening drum, so as to transport the foundry clay sand to be screened into the screening drum;

[0024] The screening cylinder includes an outer cylinder 6, an intermediate cylinder 7 and an inner cylinder 8, and the intermediate cylinder 7 is fixedly installed inside the outer cylinder 6, and the inner cylinder 8 is fixedly installed inside the intermediate cylinder 7; the inner surfaces of the outer cylinder 6, the intermediate cylinder 7 and the inner cylinder 8 are respectively fixedly installed with auger blades 17, so as to transport the screened foundry clay sand to the discharge mechanism, and the surfaces of the intermediate cylinder 7 and the inner cylinder 8 are respectively provided with screening holes 18 of different diameters, so that the foundry clay sand is put into the inner cylinder 8, screened once by the inner cylinder 8, and then screened twice by the intermediate cylinder 7; the length of the intermediate cylinder 7 is greater than the length of the outer cylinder 6, and One end of the intermediate cylinder 7 extends out from the outer cylinder 6 and the front support ring sleeve 3; the length of the inner cylinder 8 is greater than that of the intermediate cylinder 7, and one end of the inner cylinder 8 extends out from the intermediate cylinder 7 and the front support ring sleeve 3; the outer cylinder 6, the intermediate cylinder 7 and the inner cylinder 8 are coaxial; the outer cylinder 6 is rotatably installed in the rear support ring sleeve 2 and the front support ring sleeve 3; the outer cylinder 6, the intermediate cylinder 7 and the inner cylinder 8 are rotatably connected to the discharge mechanism at one end close to the front support ring sleeve 3; the hopper 16 is connected to the inner cylinder 8; the arrangement between the outer cylinder 6, the intermediate cylinder 7 and the inner cylinder 8 allows the screened casting clay sand to be discharged separately through the discharge mechanism;

[0025] The outer surface of the outer cylinder 6 is sleeved with a gear ring 14, which is meshed with the power mechanism; the power mechanism includes a rolling support 4 and a motor 5, and the rolling support 4 is fixedly installed on both sides of the upper surface of the base 1, and the motor 5 is fixedly installed on the side of the base 1 close to the front support ring sleeve 3; the output end of the motor 5 is meshed with the gear ring 14 through a gear, so that the screening cylinder can be driven to rotate by the motor 5; the rolling support 4 is in rolling contact with the outer cylinder 6; the outer surface of the outer cylinder 6 is sleeved with a ring rail 13, which is in rolling contact with the rolling support 4, so as to ensure the stability and smoothness of the screening cylinder during rotation;

[0026] It should be noted that the motor 5 adopts a forward and reverse motor. When the motor 5 rotates forward, the auger blades 17 will not discharge the casting clay sand inside the screening cylinder. On the contrary, when the motor 5 rotates reversely, the auger blades 17 will discharge the casting clay sand inside the screening cylinder. At the same time, the electrical components involved in this case are all controlled by an external PLC controller.

[0027] A feed hole 15 is provided at one end where the outer tube 6, the middle tube 7 and the inner tube 8 are connected, so that the casting clay sand in the hopper 16 can enter the inner tube 8, and the feed hole 15 is connected with the inner tube 8; the discharge port of the hopper 16 extends into the inner tube 8 through the feed hole 15, and the discharge port of the hopper 16 is rotatably connected to the feed hole 15.

[0028] The discharge mechanism includes an outer support cover 9, an intermediate support cover 10, an inner support cover 11 and a discharge pipe 12, and the outer support cover 9 is fixedly installed on the outer side of the front support ring sleeve 3; the outer side of the outer support cover 9 is fixedly installed with the intermediate support cover 10, and the outer side of the intermediate support cover 10 is fixedly installed with the inner support cover 11, and the outer support cover 9, the intermediate support cover 10 and the inner support cover 11 are connected; the lower parts of the outer support cover 9, the intermediate support cover 10 and the inner support cover 11 are fixedly installed with a discharge pipe 12, and are connected with the corresponding discharge pipe 12; the intermediate support cover 10 is rotatably sleeved on one end of the intermediate cylinder 7; the inner The support cover 11 is rotatably sleeved on one end of the inner cylinder 8; the discharge pipe 12 on the outer support cover 9 is connected with the inside of the outer cylinder 6, so that the casting clay sand after screening inside the outer cylinder 6 can be discharged separately through the discharge pipe 12 on the outer support cover 9; the discharge pipe 12 on the middle support cover 10 is connected with the inside of the middle cylinder 7, so that the casting clay sand after screening inside the middle cylinder 7 can be discharged separately through the discharge pipe 12 on the middle support cover 10; the discharge pipe 12 on the inner support cover 11 is connected with the inside of the inner cylinder 8, so that the casting clay sand after screening inside the inner cylinder 8 can be discharged separately through the discharge pipe 12 on the inner support cover 11.

[0029] In this embodiment, when in use, the casting clay sand is transported to the inner cylinder 8 through the hopper 16, and the motor 5 is started to drive the screening cylinder to rotate clockwise. During the rotation, the casting clay sand is screened by the inner cylinder 8 and falls into the middle cylinder 7, and then screened by the middle cylinder 7. The screened casting clay sand will fall into the outer cylinder 6; after the casting clay sand is fully screened, the motor 5 can drive the screening cylinder to rotate counterclockwise. During the rotation, the casting clay sand screened inside the outer cylinder 6 will be discharged separately through the discharge pipe 12 on the outer support cover 9; the casting clay sand screened inside the middle cylinder 7 will be discharged separately through the discharge pipe 12 on the middle support cover 10; the casting clay sand screened inside the inner cylinder 8 will be discharged separately through the discharge pipe 12 on the inner support cover 11.

[0030] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.

Claims

1. A screening device for processing foundry clay sand, characterized in that: The invention comprises a base (1), wherein: a rear support ring sleeve (2) and a front support ring sleeve (3) are respectively fixedly mounted on the two ends of the upper surface of the base (1), and a power mechanism for driving a screening drum to rotate is fixedly mounted on the upper surface of the base (1), and the screening drum is rotatably mounted in the rear support ring sleeve (2) and the front support ring sleeve (3); a discharge mechanism is fixedly mounted on the outer side of the front support ring sleeve (3), and the discharge mechanism is rotatably connected to one end of the screening drum, and the discharge mechanism is communicated with the screening drum; a hopper (16) is fixedly mounted on the outer side of the rear support ring sleeve (2), and the hopper (16) is rotatably connected to the other end of the screening drum, and the hopper (16) is communicated with the inside of the screening drum; The screening cylinder comprises an outer cylinder (6), an intermediate cylinder (7) and an inner cylinder (8), and the inner cylinder (6) is fixedly mounted with the intermediate cylinder (7), and the inner cylinder (8) is fixedly mounted with the intermediate cylinder (7); the inner surfaces of the outer cylinder (6), the intermediate cylinder (7) and the inner cylinder (8) are fixedly mounted with auger blades (17), and the surfaces of the intermediate cylinder (7) and the inner cylinder (8) are provided with screening holes (18) of different diameters; one end of the intermediate cylinder (7) extends out from the outer cylinder (6) and the front support ring sleeve (3); one end of the inner cylinder (8) extends out from the intermediate cylinder (7) and the front support ring sleeve (3); the outer cylinder (6) is rotatably mounted in the rear support ring sleeve (2) and the front support ring sleeve (3); one end of the outer cylinder (6), the intermediate cylinder (7) and the inner cylinder (8) close to the front support ring sleeve (3) is rotatably connected to the discharge mechanism; the hopper (16) is communicated with the inner cylinder (8); A gear ring (14) is sleeved and fixedly mounted on the outer surface of the outer cylinder (6), and the gear ring (14) is meshingly connected to the power mechanism.

2. A screening device for processing foundry clay sand according to claim 1, characterized in that: The power mechanism comprises a rolling support (4) and a motor (5), wherein the rolling support (4) is fixedly mounted on both sides of the upper surface of the base (1), and the motor (5) is fixedly mounted on a side of the base (1) close to the front support ring sleeve (3); the output end of the motor (5) is meshedly connected with the gear ring (14) via a gear; and the rolling support (4) is in rolling contact with the outer cylinder (6).

3. A screening device for processing foundry clay sand as claimed in claim 2, characterized in that: An annular rail (13) is sleeved and fixedly mounted on the outer surface of the outer cylinder (6), and the annular rail (13) is in rolling contact with the rolling support (4).

4. A screening device for processing foundry clay sand as claimed in claim 3, characterized in that: A feed hole (15) is provided at one end where the outer cylinder (6), the middle cylinder (7) and the inner cylinder (8) are connected, and the feed hole (15) is communicated with the inner cylinder (8); the discharge port of the hopper (16) extends into the inner cylinder (8) through the feed hole (15), and the discharge port of the hopper (16) is rotatably connected to the feed hole (15).

5. A screening device for treating foundry clay sand according to claim 4, characterized in that: The discharge mechanism comprises an outer support cover (9), an intermediate support cover (10), an inner support cover (11) and a discharge pipe (12), wherein the outer support cover (9) is fixedly mounted on the outer side of the front support ring sleeve (3); the intermediate support cover (10) is fixedly mounted on the outer side of the outer support cover (9), and the inner support cover (11) is fixedly mounted on the outer side of the intermediate support cover (10); the outer support cover (9), the intermediate support cover (10) and the inner support cover (11) are connected to each other; the outer support cover (9), the intermediate support cover (10) and the inner support cover (11) are connected to each other; A discharge pipe (12) is fixedly installed below each of the intermediate support covers (11) and is communicated with the corresponding discharge pipe (12); the intermediate support cover (10) is rotatably sleeved on one end of the intermediate cylinder (7); the inner support cover (11) is rotatably sleeved on one end of the inner cylinder (8); the discharge pipe (12) on the outer support cover (9) is communicated with the interior of the outer cylinder (6); the discharge pipe (12) on the intermediate support cover (10) is communicated with the interior of the intermediate cylinder (7); and the discharge pipe (12) on the inner support cover (11) is communicated with the interior of the inner cylinder (8).

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