Sand mold screening device for casting

Abstract

The utility model discloses a casting sand mold screening device which comprises a screening set, the screening set comprises an upper cover plate, a driving motor, a rotating guide shaft, a sand mold stirring set, a screening barrel and a rotating motor, the driving motor is arranged above the upper cover plate, and the output end of the driving motor is connected with the rotating guide shaft; a sand mold stirring set is connected to the outer side of the rotating guide shaft in a sleeving mode, the screening barrel is located on a rotating base on the lower surface of the upper cover plate, the output end of the rotating motor is connected with the lower portion of the screening barrel, and an outer cover shell is arranged on the lower surface of the upper cover plate. The sand mold screening device has the functions of screening, blocking prevention and efficient discharging, the sand mold screening efficiency and precision are improved, sand mold materials continuously flow from top to bottom under the action of centrifugal force through cooperative work of the cone-like screening barrel and the rotating motor, and particles with different particle sizes are effectively separated; the probability that particles pass through the sieve holes is improved, fine screening is achieved, and the screening efficiency and precision are remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of sand mold screening, and in particular to a sand mold screening device for casting. Background Art

[0002] In the modern foundry industry, sand molds are the basic molds for castings, and their quality directly affects the precision, surface quality and production efficiency of castings. In the process of sand mold making, the particle size control of sand mold materials is particularly important. Too coarse or too fine sand particles may cause casting defects such as pores, sand inclusions, rough surfaces, etc. Therefore, accurate screening of sand mold materials to ensure that their particle size distribution meets the process requirements is one of the key links to ensure the quality of castings.

[0003] Traditional sand screening methods mostly use static vibrating screens, drum screens and other equipment. Although they can achieve a certain degree of particle size separation, they have the following limitations: Traditional screening equipment often relies on a single vibration or drum rotation for screening, and the material is unevenly distributed or has poor fluidity on the screen surface, which can easily lead to low screening efficiency and difficulty in effectively separating particles close to the size of the screen hole, affecting the screening accuracy. During the screening process, sand materials, especially when they contain more clay or water, are prone to form agglomerated particles, causing the screen holes to be blocked, which not only affects the screening effect, but also increases the frequency and difficulty of equipment maintenance. Summary of the invention

[0004] The technical problem to be solved by the present application is to overcome the existing defects and provide a sand mold screening device for casting, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a sand mold screening device for casting, comprising a screening group, the screening group comprising an upper cover plate, a driving motor, a rotating guide shaft, a sand mold stirring group, a screening barrel and a rotating motor, a driving motor is arranged above the upper cover plate, the output end of the driving motor is connected to the rotating guide shaft, the outer side of the rotating guide shaft is sleeved with the sand mold stirring group, the screening barrel is located on a rotating seat on the lower surface of the upper cover plate, the output end of the rotating motor is connected to the bottom of the screening barrel, an outer cover shell is arranged on the lower surface of the upper cover plate, a lower pad is arranged at the lower outlet of the outer cover shell, a bracket is arranged on the lower pad, and the bracket is arranged corresponding to the rotating motor.

[0006] As a preferred technical solution of the present application, the bracket adopts a frustum-like structure, the interior of which is a cavity, and the cavity is arranged corresponding to the rotating motor.

[0007] As a preferred technical solution of the present application, the screening barrel adopts a cone-like structure, and the lower half of the screening barrel is provided with screening holes.

[0008] As a preferred technical solution of the present application, a motor mounting seat is arranged above the upper cover plate, and the motor mounting seat is composed of a guide shaft and a cross brace plate. Guide shafts are arranged on both sides of the cross brace plate, and the guide shaft is connected to the rotating sleeve on the upper surface of the upper cover plate.

[0009] As a preferred technical solution of the present application, a material guide tube is arranged above the upper cover plate, the material guide tube is arranged obliquely, and its discharge end is located in the screening barrel.

[0010] As a preferred technical solution of the present application, it also includes a discharging group, which is located below the outer cover shell, and the two are connected by fasteners.

[0011] As a preferred technical solution of the present application, side support plates are arranged on both sides of the outer cover shell, and the side support plates are connected to the installation connecting plates arranged above the outer cover shell through fasteners.

[0012] As a preferred technical solution of the present application, the discharging group is in a right-angled trapezoidal structure, and transfer ear plates are provided on both sides of the outer side surface of the discharging group, and adjustable pad supports are provided on the transfer ear plates.

[0013] Compared with the prior art: the present invention has the functions of screening, anti-blocking and efficient material discharging, which improves the efficiency and accuracy of sand mold screening. Through the coordinated work of the conical screening barrel and the rotating motor, the sand mold material forms a continuous flow from top to bottom under the action of centrifugal force, effectively separating particles of different particle sizes; increasing the probability of particles passing through the sieve holes, achieving fine screening, and significantly improving the screening efficiency and accuracy;

[0014] Driven by the driving motor, the sand mixing group forcibly stirs the sand materials in the screening barrel to break up the agglomerated particles, ensuring that the materials are evenly dispersed before screening, effectively avoiding the clogging of the screen holes; the cone-shaped structure facilitates the flow of materials from top to bottom to prevent local accumulation;

[0015] The discharging group adopts a right-angle trapezoidal structure. The materials fall naturally after screening and flow out smoothly downward along the slope without being easily blocked. It is suitable for discharging sand materials of various particle sizes and significantly improves the discharging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 This is the main view of this application;

[0018] Figure 3 for Figure 2 Schematic diagram of the AA section structure.

[0019] In the figure: 1 upper cover plate, 2 driving motor, 3 rotating guide shaft, 4 sand mold mixing group, 5 screening barrel, 6 outer cover shell, 7 lower pad, 8 rotating motor, 9 bracket, 10 motor mounting seat, 11 cross support plate, 12 material guide tube, 13 discharging group, 14 side support plate, 15 transfer ear plate, 16 adjustable pad support. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application (for the convenience of description and understanding, the following is Figure 2 All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0021] See also Figure 1-3 The present application provides a technical solution: a sand mold screening device for casting, including a screening group, the screening group including an upper cover plate 1, a driving motor 2, a rotating guide shaft 3, a sand mold stirring group 4, a screening barrel 5 and a rotating motor 8, a driving motor 2 is arranged above the upper cover plate 1, the output end of the driving motor 2 is connected to the rotating guide shaft 3, the outer side of the rotating guide shaft 3 is sleeved with the sand mold stirring group 4, the screening barrel 5 is located on a rotating seat on the lower surface of the upper cover plate 1, and the output end of the rotating motor 8 is connected to the bottom of the screening barrel 5.

[0022] The upper cover plate 1 is used to install components such as the drive motor 2, the connection point of the rotating guide shaft 3, and the material guide inlet.

[0023] The driving motor 2 is the power source of the screening group. The driving motor 2 drives the rotating guide shaft 3 to rotate, thereby providing continuous and stable power for the operation of the sand mold stirring group 4.

[0024] The sand mold stirring group 4 usually includes structures such as blades and stirring paddles. By rotating synchronously with the rotating guide shaft 3, the sand mold material in the screening barrel 5 is forced to be mixed to break up the agglomerated particles and ensure that the material reaches a uniform dispersion state before screening.

[0025] The conical structure of the screening barrel 5 is conducive to the top-down flow of materials during the screening process, which is beneficial to particle classification; the screening barrel 5 is installed on a rotating seat on the lower surface of the upper cover plate 1, and can rotate with the driving of the rotating motor 8, thereby enhancing the tumbling of materials and further improving the screening effect.

[0026] The operation of the rotating motor 8 enables the sand material in the screening barrel 5 to more fully contact the screening holes under the action of centrifugal force, so that the sand material can fully roll during the screening process, effectively separating sand particles of different particle sizes, significantly improving the screening efficiency and accuracy, and effectively avoiding the occurrence of screen hole blockage.

[0027] An outer cover shell 6 is disposed on the lower surface of the upper cover plate 1 , a lower pad 7 is disposed at the lower outlet of the outer cover shell 6 , a bracket 9 is disposed on the lower pad 7 , and the bracket 9 is disposed corresponding to the rotating motor 8 .

[0028] The outer cover shell 6 provides a closed working environment for the screening barrel 5 and the sand mixing and screening process inside it, reduces dust emission, and improves the environment of the workplace. In addition, the outer cover shell 6 can also play a certain sound insulation and noise reduction effect, reducing the impact of the equipment operation on the surrounding environment.

[0029] The lower pad 7 is located at the lower exit of the outer cover shell 6, receiving the screened sand material, buffering the impact of the falling material, and protecting the subsequent conveying equipment from damage. The surface of the lower pad 7 is flat, which is convenient for the material to slide.

[0030] The bracket 9 corresponds to the rotating motor 8 and provides a stable support for the rotating motor 8, thereby ensuring that the rotating motor 8 remains stable during operation and preventing damage to the equipment or affecting the screening effect due to excessive vibration.

[0031] Furthermore, the bracket 9 adopts a frustum-like structure, and the interior thereof is a cavity, and the cavity is arranged corresponding to the rotating motor 8.

[0032] The support cone structure makes the bracket 9 have good self-stability, which can provide strong support during the operation of the rotating motor 8, reduce equipment vibration, and ensure the smooth operation of the motor.

[0033] The cavity structure of the bracket 9 corresponds precisely to the shape and installation position of the rotating motor 8, ensuring that the motor can be tightly and firmly installed in the bracket 9. The installation process of the motor is simplified, the installation accuracy is improved, and the vibration and load generated when the motor is running can be effectively transferred to the structure of the bracket 9. Through the dispersion and absorption of the supporting cone structure, the impact on other parts of the equipment is reduced.

[0034] Furthermore, the screening barrel 5 adopts a cone-like structure, and the lower half of the screening barrel 5 is provided with screening holes.

[0035] The screening barrel 5 adopts a cone-like structure, that is, its cross section gradually decreases from top to bottom, which is conducive to the natural flow of materials from top to bottom in the barrel. When the sand material enters the screening barrel 5, due to the inclination angle of the barrel wall and the gravity of the material itself, the material will roll down along the barrel wall to form a continuous and uniform flow state, avoiding local accumulation of materials in the barrel, thereby improving the screening efficiency.

[0036] The sieving holes are the key part to achieve material particle size separation. As the material flows downward in the screening barrel 5, smaller particles can pass through the sieving holes smoothly, while larger particles are blocked outside the holes. The conical structure makes the material subject to greater centrifugal force when approaching the sieving hole area, prompting the particles to contact the sieving holes more fully, increasing the probability of particles passing through the sieving holes, thereby improving the fineness and efficiency of screening.

[0037] Furthermore, a motor mounting seat 10 is arranged above the upper cover plate 1 , and the motor mounting seat 10 is composed of a guide shaft and a cross brace plate 11 . Guide shafts are arranged on both sides of the cross brace plate 11 , and the guide shafts are connected to a rotating sleeve on the upper surface of the upper cover plate 1 .

[0038] Furthermore, a material guide tube 12 is arranged above the upper cover plate 1 . The material guide tube 12 is arranged obliquely, and a discharge end thereof is located in the screening barrel 5 .

[0039] The material guide tube 12 adopts an inclined structure and utilizes the material's own gravity to realize directional conveying of the material from top to bottom, ensuring that the material can accurately and continuously enter the screening barrel 5, avoiding the scattered distribution of the material and improving the controllability and efficiency of the feeding.

[0040] Furthermore, it also includes a discharging group 13, which is located below the outer cover shell 6, and the two are connected by fasteners.

[0041] Furthermore, side support plates 14 are provided on both sides of the outer cover shell 6 , and the side support plates 14 are connected to the mounting connecting plates provided above the outer cover shell 6 through fasteners.

[0042] Furthermore, the discharging group 13 is in a right-angled trapezoidal structure, and transfer ear plates 15 are provided on both sides of the outer side surface of the discharging group 13 , and adjustable cushion supports 16 are provided on the transfer ear plates 15 .

[0043] The discharge group 13 adopts a right-angle trapezoidal structure. The material naturally falls after screening, so that the screened sand material can flow down smoothly along the slope, avoiding the accumulation of materials at the discharge port and improving the discharge efficiency. It is not easy to be blocked and is suitable for the discharge of sand materials of various particle sizes.

[0044] When in use: the sand material to be screened is put into the screening barrel 5 through the material guide cylinder 12. The material guide cylinder 12 is tilted to realize directional conveying by the material's own gravity, ensuring that the material enters the screening barrel 5 continuously and evenly to avoid accumulation.

[0045] The driving motor 2 is started, and the sand mold stirring group 4 is driven by the rotating guide shaft 3 to stir the sand mold material in the screening barrel 5 to break up the agglomerated particles and ensure that the material is evenly dispersed to prepare for subsequent screening.

[0046] At the same time, the rotating motor 8 is started to drive the screening barrel 5 to rotate, so that the material flows from top to bottom under the action of centrifugal force, and smaller particles pass through the screening holes smoothly, while larger particles are blocked. During the screening process, the material keeps rolling, effectively avoiding local accumulation and improving the screening efficiency and accuracy.

[0047] The screened sand material rolls down along the inner wall of the screening barrel 5, is discharged through the screening holes at the bottom of the screening barrel 5, and enters the discharge group 13 of the right-angle trapezoidal structure. The material flows out smoothly downward along the inclined surface of the discharge group 13 to avoid accumulation, and is suitable for the discharge of sand materials of various particle sizes, thereby completing the sand screening.

[0048] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A casting sand screening device, comprising a screening group, characterized in that: The screening group comprises an upper cover plate (1), a driving motor (2), a rotating guide shaft (3), a sand mold stirring group (4), a screening barrel (5) and a rotating motor (8). The driving motor (2) is arranged above the upper cover plate (1), the output end of the driving motor (2) is connected to the rotating guide shaft (3), the outer side of the rotating guide shaft (3) is sleeved with the sand mold stirring group (4), the screening barrel (5) is located on a rotating seat on the lower surface of the upper cover plate (1), the output end of the rotating motor (8) is connected to the lower side of the screening barrel (5), the lower surface of the upper cover plate (1) is provided with an outer cover shell (6), the lower outlet of the outer cover shell (6) is provided with a lower pad (7), the lower pad (7) is provided with a bracket (9), and the bracket (9) is arranged corresponding to the rotating motor (8).

2. A casting sand screening device according to claim 1, characterized in that: The bracket (9) adopts a frustum-like structure, and its interior is a cavity, and the cavity is arranged corresponding to the rotating motor (8).

3. The casting sand screening device according to claim 1, characterized in that: The screening barrel (5) adopts a cone-like structure, and the lower half of the screening barrel (5) is provided with screening holes.

4. The casting sand screening device according to claim 1, characterized in that: A motor mounting seat (10) is arranged above the upper cover plate (1), and the motor mounting seat (10) is composed of a guide shaft and a cross brace plate (11). Guide shafts are arranged on both sides of the cross brace plate (11), and the guide shafts are connected to a rotating sleeve on the upper surface of the upper cover plate (1).

5. The casting sand screening device according to claim 1, characterized in that: A material guide tube (12) is arranged above the upper cover plate (1), and the material guide tube (12) is arranged at an angle, with a discharge end thereof being located in the screening barrel (5).

6. The casting sand screening device according to claim 1, characterized in that: It also comprises a discharge group (13), wherein the discharge group (13) is located below the outer cover shell (6), and the two are connected via fasteners.

7. A casting sand screening device according to claim 1, characterized in that: Side support plates (14) are provided on both sides of the outer cover shell (6), and the side support plates (14) are connected to a mounting connection plate provided above the outer cover shell (6) via fasteners.

8. The casting sand screening device according to claim 6, characterized in that: The material discharging group (13) is in a right-angled trapezoidal structure, and transfer ear plates (15) are provided on both sides of the outer side surface of the material discharging group (13), and adjustable cushion supports (16) are provided on the transfer ear plates (15).

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