Multi-granularity metal powder disc vibrating screen

Abstract

The utility model relates to the technical field of vibration screening, and provides a multi-granularity metal powder disc vibration screen which comprises a plurality of layers of screens vertically distributed in a shell, a funnel is arranged between every two vertically-adjacent screens, and a material gathering hole is formed in the middle of each funnel. The plugging block is arranged in the funnel in a lifting manner, is far away from or close to the material gathering hole after being lifted, and is used for plugging the material gathering hole after being descended; the canopy is arranged at the upper end of the plugging block. According to the technical scheme, the problem that materials are accumulated in the middle of the screen due to the fact that falling of the materials cannot be effectively controlled when the materials are gathered through a funnel in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration screening, in particular to a multi-granularity metal powder disc vibrating screen. Background Art

[0002] Vibrating screens are used for screening metal powder production. Commonly used disc vibrating screens include single-layer and multi-layer screens. Under the action of ultrasonic vibration of the motor, the powder moves from the center to the surrounding area for screening. Due to the different falling positions of the powder, the screening time on the second layer of screen is reduced, resulting in incomplete screening on the second layer.

[0003] In the prior art, the patent document with authorization announcement number CN217491641U discloses a vibrating screen with a conical material gathering funnel. The outer shell has multiple layers of screens, and the material is gathered to the middle through the funnel below the screen, so that the screening time of the material on the lower screen is prolonged and the screening is more sufficient. However, when the funnel gathers the material to the middle, the material in the middle also increases sharply. If the accumulation thickness is large, it will be conical, causing the material to diffuse and fall directly to the periphery. The material directly involved in the screening at the most central position is still relatively small, affecting the screening efficiency and effect. The amount of material entering the screening can be changed by controlling the feeding rate or feeding cycle, but in the case of multiple layers of screens, the control of the material accumulation on the lower screen has a high delay and cannot be controlled in time. Therefore, other solutions are needed to improve the control accuracy.

[0004] In the prior art, the use of a funnel to gather materials cannot effectively control the falling of the materials, resulting in the problem of materials piling up in the middle of the screen, which needs to be solved. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a multi-size metal powder disc vibrating screen in response to the above-mentioned technical deficiencies, which solves the problem in the prior art that a funnel is used to gather materials, the falling of the materials cannot be effectively controlled, and the materials are accumulated in the middle of the screen.

[0006] The technical solution adopted by the utility model is to provide a multi-size metal powder disc vibrating screen, including a plurality of screen layers vertically distributed in a shell, a funnel is provided between two upper and lower adjacent screen layers, and the middle part of the funnel is a material gathering hole; the utility model is characterized by further comprising:

[0007] A blocking block is arranged in the funnel by lifting, and the blocking block moves away from or approaches the material gathering hole after being lifted, and is used to block the material gathering hole after being lowered;

[0008] An umbrella cover is arranged on the upper end of the blocking block.

[0009] To further optimize the technical solution, the block has a sealing portion at the bottom, the sealing portion is truncated cone-shaped and the side with a smaller diameter is located at the lower end, and after the block is lowered, the sealing portion is inserted into the material gathering hole.

[0010] Further optimizing the technical solution, the upper portion of the blocking block is provided with a guide block, the umbrella cover is arranged at the upper end of the guide block, and the guide block has a guide groove; further comprising:

[0011] A transmission rod is rotatably mounted on the funnel, wherein the axis of the transmission rod is perpendicular to the axial direction of the material collecting hole;

[0012] The rotating rod is arranged beside the transmission rod and is rotatable around the axis of the transmission rod. The rotating rod rotates in the guide groove. After the rotating rod rotates around the transmission rod, it is used to drive the block to rise and fall.

[0013] To further optimize the technical solution, the side wall of the funnel has a mounting hole; the transmission rod passes through the mounting hole and then through the outer wall of the shell, so as to be connected to the power output end of the external power equipment.

[0014] Further optimization of this technical solution also includes:

[0015] The support rod is arranged on a side of the rotating rod away from the transmission rod, and the support rod is rotatably arranged on the funnel.

[0016] To further optimize the technical solution, the guide groove is in the shape of a straight slot or an ellipse, the major axis of the ellipse is vertically arranged, and the rotating rod moves up and down in the guide groove.

[0017] To further optimize the technical solution, the bottom end diameter of the umbrella cover is larger than the diameter of the material gathering hole.

[0018] The beneficial effects of the present invention are:

[0019] 1. After the block descends and then rises, it can block or open the gathering hole, thereby controlling the falling of the material through the gathering hole, avoiding the accumulation of the material in the middle of the screen into a cone shape, so that more material can participate in the screening in the middle of the screen.

[0020] 2. The middle of the umbrella cover is higher, and the sides are tilted downward, which can quickly disperse the material falling from the middle of the upper screen to the periphery, avoiding the retention of material at the upper end of the blockage. At the same time, it is conducive to more even diffusion of the material in the middle, reducing the probability of excessive material in a local position. The uniform dispersion of materials is conducive to improving the efficiency of a single screening.

[0021] 3. After the block descends, it can be plugged into the gathering hole or covered on the gathering hole to seal the gathering hole. At the same time, the block descends to abut against the collision funnel, causing the funnel to vibrate irregularly, promoting the flow of materials on the funnel and reducing the amount of materials remaining on the funnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the appearance structure of the utility model (omitting the prior art structure);

[0023] Figure 2 This is a schematic diagram of the structure of the utility model from above;

[0024] Figure 3 For the utility model Figure 2 Schematic diagram of the cross-sectional structure at the AA position;

[0025] Figure 4 This is a schematic diagram of the installation structure of the blocking block of the present utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the utility model after the blocking block is raised;

[0027] Figure 6 This is a schematic diagram of the structure of the utility model after the blocking block is lowered;

[0028] Figure 7 This is a schematic diagram of the block structure of the utility model;

[0029] Explanation of the marks in the figure: 1. Shell; 101. Screen; 102. Funnel; 1021. Material gathering hole; 1022. Mounting hole; 2. Block; 201. Sealing part; 202. Guide block; 2021. Guide groove; 3. Umbrella cover; 4. Transmission rod; 5. Rotating rod; 6. Support rod. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0031] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0032] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0033] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0034] like Figure 1-7 As shown, a multi-size metal powder disc vibrating screen includes several layers of screens 101 distributed vertically in a shell 1, a funnel 102 is arranged between two upper and lower adjacent screens 101, and the middle part of the funnel 102 is a gathering hole 1021; it also includes: a block 2, which is set in the funnel 102 for lifting and lowering. After the block 2 is raised and lowered, it moves away from or close to the gathering hole 1021, and after the block 2 is lowered, it is used to block the gathering hole 1021; an umbrella cover 3 is arranged at the upper end of the block 2.

[0035] During use, the accumulation data of the material in the middle of the lower screen 101 after passing through the gathering hole 1021 of the funnel 102 can be verified by setting a camera, setting an observation window on the housing 1, or verifying the accumulation data through experiments. Parameters such as time can be clearly determined and used as a reference to control the timing of raising and lowering the block 2. When a large amount of material accumulates in the middle of the lower screen 101, the block 2 descends, blocking the gathering hole 1021, immediately reducing the amount of material entering the lower screen 101. The screen 101 is always in a vibrating screening state, and the material that is not excessively accumulated in the middle can be quickly diffused and screened to the surrounding areas. Then the block 2 rises, opening the gathering hole 1021, and the material falling from above is gathered by the funnel 102 and falls to the middle of the lower screen 101. The umbrella cover 3 can be conical, cylindrical, or pyramidal, etc., with the side tilted downward, which can reduce the accumulation of material at the upper end and allow the material to diffuse to the periphery.

[0036] The block 2 can be placed over the material collection hole 1021 to seal it, or inserted into the material collection hole 1021, with a small gap or abutment with the inner wall of the material collection hole 1021, both of which can effectively seal the material. When the block 2 descends, it can collide with the funnel 102, generating vibrations that promote the flow of materials on the funnel 102 and the umbrella cover 3.

[0037] The block 2 can be raised and lowered in various forms, such as vertically, or through circular rotation or swinging to achieve the conversion between high and low positions, with the high position away from the material gathering hole 1021 and the low position blocking the material gathering hole 1021.

[0038] The umbrella cover 3 is positioned opposite the middle of the upper screen 101. A funnel 102 is positioned between two adjacent screens 101, and the block 2 is also positioned between the two screens 101. In a multi-layer vibrating screen, a funnel 102 can be positioned between each two adjacent screens 101, and a block 2 can be positioned in each funnel 102.

[0039] Furthermore, the block 2 has a blocking portion 201 at its lower portion. The blocking portion 201 is truncated cone-shaped with the side with a smaller diameter located at the lower end. After the block 2 descends, the blocking portion 201 is inserted into the material collecting hole 1021 .

[0040] During use, the material collection hole 1021 can be a circular hole, and the block 2 can be a spherical structure that can be adapted to block the circular hole. In the vertical direction, the blocking portion 201 can be partially inserted into the material collection hole 1021. The blocking portion 201 at the bottom of the block 2 can also be truncated cone-shaped, with the smaller diameter side located at the lower end. The smaller diameter end has a smaller diameter than the material collection hole 1021, and the larger diameter end has a larger diameter than the material collection hole 1021.

[0041] Furthermore, the block 2 has a guide block 202 at its upper portion, with an umbrella cap 3 positioned at its upper end. The guide block 202 has a guide slot 2021. The block 2 also includes a transmission rod 4 rotatably mounted on the hopper 102, with the axis of the transmission rod 4 perpendicular to the axial direction of the material collecting hole 1021. A rotating rod 5 is positioned adjacent to the transmission rod 4 and rotatably mounted about its axis. The rotating rod 5 rotates within the guide slot 2021, rotating about the transmission rod 4 to raise and lower the block 2. The guide slot 2021 is in the shape of a straight slot or an ellipse, with the major axis of the ellipse vertically oriented. The rotating rod 5 moves up and down within the guide slot 2021.

[0042] During use, the rotating rod 5 and the transmission rod 4 are parallel but not coaxial. As the rotating rod 5 rotates around the transmission rod 4, it switches between a high position and a low position. At this time, the rotating rod 5 is within the guide groove 2021, driving the blocking block 2 to switch between a high position and a low position. When in the low position, the blocking block 202 blocks the material collection hole 1021. The guide block 202 is located above the blocking portion 201. The two can have the same diameter, or the guide block 202 can have a smaller diameter.

[0043] The guide groove 2021 can be a circular hole-shaped groove, which is arranged along the radial direction of the block 2. The rotating rod 5 is rotatably connected with the guide groove 2021 to control the high and low position transformation of the block 2. When moving to the low position through circular motion, the lower end of the block 2 can collide with the lower inner wall of the funnel 102 first, and cause the funnel 102 to deform slightly, so that the block 2 can enter the gathering hole 1021.

[0044] The guide groove 2021 can be a straight slot shape, an elliptical shape, a rectangular shape, etc., with a vertically arranged long axis direction. The rotating rod 5 can rotate and move up and down in the guide groove 2021, so that when the rotating rod 5 is rotated to the high position, the block 2 can be lowered within the long axis direction of the guide groove 2021, reducing the height of the block 2 and the rotating rod 5 when they are in the high position, so as to facilitate adaptation to the internal space between the two layers of screen 101, reduce the height requirement, and meet the existing relatively small height of the entire equipment. When the block 2 descends and abuts the lower part of the funnel 102 and continues to move, the rotating rod 5 that continues to rotate can be relatively lowered in the guide groove 2021 without generating downward pressure on the block 2, retaining the effect of the block 2 hitting the funnel 102, but reducing the extrusion deformation of the funnel 102.

[0045] Furthermore, the sidewall of the funnel 102 has a mounting hole 1022. The transmission rod 4 passes through the mounting hole 1022 and then through the outer wall of the housing 1, enabling transmission connection to the power output of an external power device. The funnel 102 also includes a support rod 6, which is disposed on the side of the rotating rod 5 away from the transmission rod 4 and is rotatably mounted on the funnel 102.

[0046] During use, the power source of the transmission rod 4 can be located inside the funnel 102 or outside the housing 1 to reduce the impact of metal powder. After the transmission rod 4 passes through the mounting hole 1022 and the outer wall of the housing 1, power transmission can be performed externally, such as by controlling the rotation of the transmission rod 4 through a servo drive motor.

[0047] The support rod 6 and the transmission rod 4 are respectively arranged on both sides of the rotating rod 5 to form a stable support for the rotating rod 5.

[0048] Furthermore, the bottom diameter of the umbrella cover 3 is larger than the diameter of the material collecting hole 1021 .

[0049] When in use, the diameter of the umbrella cover 3 is larger than the diameter of the material collecting hole 1021 , and the dispersed materials on the umbrella cover 3 fall onto the lower inner wall of the funnel 102 .

[0050] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A multi-size metal powder disc vibrating screen, comprising a plurality of screens (101) vertically distributed within a housing (1), a funnel (102) being provided between two upper and lower adjacent screens (101), the middle portion of the funnel (102) being a material collecting hole (1021); characterized in that: Also includes: A blocking block (2) is arranged in the funnel (102) in a lifting manner, wherein the blocking block (2) moves away from or close to the material gathering hole (1021) after being lifted, and is used to block the material gathering hole (1021) after being lowered; An umbrella cover (3) is arranged on the upper end of the blocking block (2).

2. The multi-size metal powder disc vibrating screen according to claim 1, characterized in that: The block (2) has a blocking portion (201) at its lower portion. The blocking portion (201) is truncated cone-shaped, with the side with a smaller diameter located at the lower end. After the block (2) descends, the blocking portion (201) is inserted into the material collecting hole (1021).

3. The multi-size metal powder disc vibrating screen according to claim 2, characterized in that: The blocking block (2) has a guide block (202) at its upper portion, the umbrella cover (3) is arranged at the upper end of the guide block (202), and the guide block (202) has a guide groove (2021); and further comprises: A transmission rod (4) is rotatably mounted on the funnel (102), wherein the axial direction of the transmission rod (4) is perpendicular to the axial direction of the material collecting hole (1021); A rotating rod (5) is arranged beside the transmission rod (4) and is rotatable around the axis of the transmission rod (4). The rotating rod (5) rotates in the guide groove (2021). After the rotating rod (5) rotates around the transmission rod (4), it is used to drive the block (2) to rise and fall.

4. The multi-size metal powder disc vibrating screen according to claim 3, characterized in that: The side wall of the funnel (102) has a mounting hole (1022); the transmission rod (4) passes through the mounting hole (1022) and then through the outer wall of the housing (1) for transmission connection with the power output end of an external power device.

5. The multi-size metal powder disc vibrating screen according to claim 4, characterized in that: Also includes: A support rod (6) is arranged on a side of the rotating rod (5) away from the transmission rod (4), and the support rod (6) is rotatably arranged on the funnel (102).

6. The multi-size metal powder disc vibrating screen according to claim 3, characterized in that: The guide groove (2021) is in the shape of a straight slot or an ellipse, and the major axis direction of the ellipse is arranged vertically. The rotating rod (5) moves up and down in the guide groove (2021).

7. The multi-size metal powder disc vibrating screen according to claim 1, characterized in that: The bottom end diameter of the umbrella cover (3) is larger than the diameter of the material collecting hole (1021).

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