Movable feeding device for vibrating screen

Abstract

The movable feeding device comprises a support and a discharging hopper arranged at one end of the upper portion of the support, a material suction machine is arranged on the discharging hopper and used for feeding materials into the discharging hopper, a screw conveyor is arranged in the discharging hopper, and a feeding port of the screw conveyor is matched with the material suction machine and used for receiving the materials. And a discharge port of the screw conveyor is matched with a blanking port of the blanking hopper for blanking. By means of the material suction machine, continuous feeding is facilitated; the screw conveyor is arranged to convey high-molecular material particles, and the high-molecular material particles which are adhered into clusters are scattered by utilizing the shearing capacity of the screw, so that the screening of the vibrating screen is facilitated, and the qualified rate of products is improved.

Description

Technical Field

[0001] This utility model relates to the field of feeding technology, and in particular to a feeding device. Background Technology

[0002] Engineering plastics possess excellent comprehensive properties, including high rigidity, low creep, high mechanical strength, good heat resistance, and good electrical insulation, allowing them to be used for extended periods in harsh chemical and physical environments. Therefore, engineering plastics can replace metals as structural engineering materials and in the manufacture of machine parts, resulting in a wide range of applications.

[0003] In the production process of engineering plastics, raw materials are polymerized (addition polymerization or condensation polymerization) into granular polymer materials. These polymer granules need to be screened to select suitable particle sizes. Vibrating screens are widely used in this industry. Their main working principle involves using a vibrating motor as the vibration source, causing the material to be thrown up on the screen mesh while simultaneously moving forward in a straight line. The material enters the feed inlet of the screening machine evenly from the feeder, and through multiple layers of screens, several sizes of oversize and undersize materials are produced, which are then discharged from their respective outlets.

[0004] However, during the processing and production of polymer materials, when the product has a low melting temperature, particles are prone to clump together. These clumps of particles are usually impossible to break up with a vibrating screen, resulting in unqualified products. Summary of the Invention

[0005] To address the aforementioned technical problems, this utility model proposes a mobile feeding device for vibrating screens, which solves the problem in the prior art where polymer particles that clump together affect the screening process of vibrating screens.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0007] A mobile feeding device for a vibrating screen includes a support frame and a hopper located at one upper end of the support frame. A suction feeder is mounted on the hopper for feeding material into it. A screw conveyor is installed inside the hopper, with its inlet cooperating with the suction feeder to receive material and its outlet cooperating with the hopper's outlet for discharging material. This invention facilitates continuous feeding via the suction feeder; the screw conveyor transports polymer particles, utilizing the shearing capacity of the screw to break up clumps of polymer particles, thus facilitating screening by the vibrating screen and improving product qualification rate.

[0008] Furthermore, in order to use a longer screw conveyor, the screw conveyor is inclined inside the hopper, and the discharge end of the screw conveyor is inclined upward so that the discharge port of the screw conveyor is located obliquely above the inlet.

[0009] Furthermore, in order to drive the rotation of the screw, the lower end of the screw conveyor extends out of the hopper and is connected to a conveying power mechanism, which is mounted on a support.

[0010] Furthermore, the hopper is provided with an upper cover, and the suction machine is installed on the upper cover. The upper cover is provided with a through hole corresponding to the outlet of the suction machine.

[0011] Furthermore, in order to facilitate accurate material receiving by the screw conveyor, an inner hopper is connected to the feed inlet of the screw conveyor, with the upper end of the inner hopper facing the outlet of the suction machine.

[0012] Furthermore, in order to facilitate the feeding of the material and the opening of the hopper, a rotary telescopic cylinder is provided on one side of the hopper on the support. The working end of the rotary telescopic cylinder is connected to the upper cover to drive the upper cover to close or open the upper end of the hopper.

[0013] Furthermore, in order to allow the hopper to extend above the vibrating screen for better material feeding, the support includes a lower support frame and an upper support frame with a side view projection of "T" shape, which is set on the lower support frame. The lower end of the "T" shaped upper support frame and one end of the horizontal part are connected to the lower support frame, and the other end of the horizontal part is provided with the hopper so that the hopper extends above the vibrating screen.

[0014] Furthermore, in order to accommodate vibrating screens of different models or heights, the upper support frame is flexibly connected to the lower support frame.

[0015] Furthermore, to facilitate the adjustment of the height of the support frame, the lower end of the upper support frame is connected to the lower support frame via a telescopic drive mechanism; one end of the horizontal portion of the upper support frame is provided with a sliding sleeve, and the lower support frame is provided with a sliding rod that passes through the sliding sleeve and is slidably connected to the sliding sleeve.

[0016] Furthermore, the bottom of the lower support frame is provided with rollers.

[0017] The beneficial effects of this utility model are:

[0018] 1. This utility model can realize automatic feeding operation of vibrating screen, saving manpower and ensuring safe and stable operation.

[0019] 2. This utility model uses a screw to transport polymer material particles, and utilizes the shearing ability of the screw to break up the polymer particles that are stuck together, which facilitates the screening of the vibrating screen.

[0020] 3. This utility model uses an inclined screw feeding method, which allows for the use of a longer screw of the same size, and there is a greater drop between the discharge end of the screw conveyor and the outlet of the hopper. These two aspects enhance the shearing ability of the screw, enabling this utility model to effectively handle clumps of materials.

[0021] 4. The support frame of this utility model is height adjustable, which allows the discharge port of the feeding machine to be raised and lowered and to be moved as a whole, making this utility model adaptable to various vibrating screens and flexible in its use. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the hopper structure of this utility model;

[0025] Figure 3 This is a three-dimensional schematic diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of this utility model.

[0027] In the diagram: 1. Suction machine, 2. Hopper, 3. Screw conveyor, 4. Rotary telescopic cylinder, 5. Telescopic drive mechanism, 6. Upper support frame, 7. Lower support frame, 8. Suction port, 9. Vibrating screen, 10. Top cover, 11. Screw, 12. Inner hopper, 13. Discharge port, 14. Screw barrel, 15. Conveying power mechanism. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figure 1As shown in Embodiment 1 of this utility model, a mobile feeding device for a vibrating screen includes a support frame and a hopper 2 located at one end of the upper part of the support frame. The lower end of the hopper 2 has a discharge port 13 for feeding material into the vibrating screen. A suction machine 1 is located at the upper end of the hopper 2, and a suction port 8 is located on one side of the suction machine 1. The suction port 8 is connected to a pipe and is used to suck up material, i.e., polymer particles, and deliver them into the hopper 2. A screw conveyor 3 is mounted on the hopper 2, with most of the screw conveyor 3 located inside the hopper 2. One end of the screw conveyor 3 extends out of the hopper 2 and is connected to a conveying power mechanism 15, which is mounted on the support frame. This conveying power mechanism 15 is a motor or other power source for the screw conveyor in the prior art. The inlet of the screw conveyor 3 cooperates with the outlet of the suction machine 1 for receiving material; that is, the inlet of the screw conveyor 3 is located directly below the outlet of the suction machine 1 for receiving material. The discharge port of the screw conveyor 3 is matched with the discharge port 13 of the hopper 2 for material feeding. That is, the discharge port of the screw conveyor 3 is located inside the hopper 2 and above the discharge port 13. Thus, the material exiting the discharge port of the screw conveyor 3 falls into the discharge port 13 and onto the vibrating screen. Figure 4 As shown, the screw conveyor 3 transports materials, and the shearing ability of the screw breaks up the clumps of polymer particles, making it easier for the vibrating screen to screen and avoid defective products.

[0030] In a preferred embodiment, the screw of the screw conveyor 3 is a sawtooth screw. The sawtooth screw adopts a structure in the prior art. The helical blades of the sawtooth screw have edges with a sawtooth-like shape, thus breaking up clumps of polymer particles.

[0031] In another embodiment, the screw of the screw conveyor 3 is a variable pitch screw, a technology known in the art. The pitch of a variable pitch screw varies in the axial direction. Typically, a smaller pitch is used at the feed end to gradually compress and pre-crush the material, and then the pitch gradually increases during conveying. This pitch variation generates changes in extrusion pressure, which enhances the interaction force between material particles, breaking down material adhesion and agglomeration. Furthermore, the changes in material flow velocity and density due to the pitch variation create disturbances, causing the material to tumble and roll during conveying, which helps to break up agglomerated materials.

[0032] Example 2 differs from Example 1 in that, as Figure 2As shown, the screw conveyor 3 is inclinedly arranged inside the hopper 2, with the discharge end of the screw conveyor 3 tilted upwards. The inlet of the screw conveyor 3 is located near the other end, so that the discharge outlet of the screw conveyor 3 is located obliquely above the inlet. The screw conveyor 3 includes a screw barrel 14 and a screw 11 disposed inside the screw barrel 14; the screw conveyor 3 is inclined, meaning that both the screw barrel 14 and the screw 11 are inclined. After receiving the material fed into the hopper 2 by the suction machine 1 through the inlet of the screw conveyor 3, the material enters the screw barrel 14. Through the conveying action of the screw 11 inside the screw conveyor 3, the clumps of polymer particles are broken up. Then, the material falls from the discharge outlet of the screw conveyor 3 into the hopper 2, and is discharged through the discharge port 13 at the lower end of the hopper 2 under the action of gravity.

[0033] Example 3 differs from Example 1 in that, as Figure 2 As shown, an inner hopper 12 is connected to the feed inlet of the screw conveyor 3. The inner hopper 12 is funnel-shaped, wider at the top and narrower at the bottom. The upper end of the inner hopper 12 faces the outlet of the suction machine 1 for easy material receiving. The lower end of the inner hopper 12 is connected to the feed inlet of the screw conveyor 3.

[0034] Example 4 differs from Example 1 in that, as Figure 1 As shown, the hopper 2 is provided with an upper cover 10, and the suction machine 1 is mounted on the upper cover 10. The upper cover 10 is provided with a through hole corresponding to the outlet of the suction machine 1. In this embodiment, as... Figure 2 As shown, the upper cover 10 is equipped with a base, which is a cylindrical structure. The base is sealed to the lower end of the suction machine 1, that is, an annular flange structure is set at the upper end of the base and connected to the flange at the lower end of the suction machine 1, and a sealing ring is set between the flange and the annular flange structure. The circular hole in the annular flange structure allows the lower end of the suction machine 1 to communicate with the interior of the base. The lower end of the base is an open structure. The upper cover 10 is provided with a through hole corresponding to the lower end of the base so that the material sucked in by the suction machine 1 passes through the base and enters the hopper 2.

[0035] Example 5 differs from Example 4 in that, as Figure 1 As shown, a rotary telescopic cylinder 4 is provided on one side of the feeding hopper 2 on the support. The rotary telescopic cylinder 4 adopts a structure from the prior art. The working end of the rotary telescopic cylinder 4 is connected to the upper cover 10 to drive the upper cover 10 to rotate and rise or rotate and press down. The positioning of the rotary telescopic cylinder 4 on the support is such that after the working end of the rotary telescopic cylinder 4 rotates and presses down, it exactly closes the upper end of the feeding hopper 2.

[0036] In a preferred embodiment, the rotary telescopic cylinder 4 can be a QGBD80 type cylinder.

[0037] Example 6 differs from Example 5 in that, as Figure 1 and Figure 3As shown, the support includes a lower support frame 7 and an upper support frame 6 with a side view projection of "T" shape, which is mounted on the lower support frame 7. The lower end of the vertical part of the "T"-shaped upper support frame 6 and one end of the horizontal part of the "T"-shaped upper support frame 6 are connected to the lower support frame 7. The other end of the horizontal part of the upper support frame 6 is provided with the feeding hopper 2. The horizontal part of the "T"-shaped upper support frame 6 is relatively long so that the feeding hopper 2 extends above the vibrating screen 9.

[0038] like Figure 3 As shown, the "T"-shaped upper support frame 6 includes two "T"-shaped frames arranged parallel to each other. In this embodiment, each "T"-shaped frame has two vertical sections, meaning each "T"-shaped frame consists of a long horizontal bar and two vertical bars connected to the lower side of the middle of the horizontal bar. The four vertical bars of the two "T"-shaped frames are connected together and to the lower support frame 7. One end of each of the two long horizontal bars is connected to the lower support frame 7. The lower support frame 7 has a vertical section at a corresponding position connected to one end of the two long horizontal bars. The hopper 2 is connected to the other end of the two long horizontal bars. Furthermore, a support structure is connected to the two "T"-shaped frames to support the conveying power mechanism 15 of the screw conveyor 3.

[0039] Example 7 differs from Example 6 in that the upper support frame 6 is vertically connected to the lower support frame 7.

[0040] Furthermore, such as Figure 1 and Figure 3 As shown, the lower end of the upper support frame 6 is connected to the lower support frame 7 via a telescopic drive mechanism 5. One end of the horizontal portion of the upper support frame 6 is provided with a sliding sleeve, and the lower support frame 7 is provided with a sliding rod that passes through and is slidably connected to the sliding sleeve. Specifically, four telescopic drive mechanisms 5 are provided on the lower support frame 7 at positions corresponding to the four vertical rods of the upper support frame 6. In this embodiment, the telescopic drive mechanism 5 is a telescopic cylinder or an electric cylinder. The fixed end of the telescopic drive mechanism 5 is connected to the lower support frame 7, and the telescopic end extends upwards and connects to the upper support frame 6. The vertical portion of the lower support frame 7, connected to one end of two long horizontal rods, is provided with vertical sliding rods that cooperate with the two long horizontal rods respectively. One end of each of the two long horizontal rods is provided with a sliding sleeve, which is slidably fitted onto the sliding rod. A top plate is provided at the upper end of the sliding rod to prevent the sliding sleeve from slipping off.

[0041] Furthermore, the bottom of the lower support frame 7 is provided with rollers, allowing the entire device to move.

[0042] Example 8 differs from Example 7 in that a control cabinet is mounted on the lower support frame 7, and a controller is installed inside the control cabinet. The controller is connected to the telescopic drive mechanism 5 and the rotary telescopic cylinder 4, and can control the up-and-down movement of the upper support frame and the opening and closing of the hopper. In another embodiment, the output port of the controller is connected to the control circuit of the suction machine, allowing for convenient operation by controlling the switching of the suction machine. Furthermore, the control cabinet can be used to add counterweight to the lower support frame 7, facilitating stable support of the hopper 2.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any modifications to the technical solutions described in the foregoing embodiments, or equivalent substitutions of some or all of the technical features thereof, within the spirit and principles of the present invention, do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A mobile feeding device for a vibrating screen, characterized in that The device comprises a support, a lower hopper (2) arranged at one end of the upper part of the support, a suction feeder (1) arranged on the lower hopper (2) for feeding the lower hopper (2), a screw conveyor (3) arranged in the lower hopper (2), and a discharge port of the screw conveyor (3) matched with a lower discharge port (13) of the lower hopper (2) for discharging.

2. Mobile feeding device for a vibrating screen according to claim 1, characterized in that The screw conveyor (3) is arranged in the lower hopper (2) in an inclined manner, and an outlet end of the screw conveyor (3) is inclined upward so that the discharge port of the screw conveyor is located above the inlet port.

3. Mobile feeding device for a vibrating screen according to claim 2, characterized in that A conveying power mechanism (15) is connected to a lower end of the screw conveyor (3) and arranged on the support.

4. Mobile feeding device for a vibrating screen according to any one of claims 1 to 3, characterized in that, An upper cover (10) is arranged on the lower hopper (2), and the suction feeder (1) is arranged on the upper cover (10).

5. Mobile feeding device for a vibrating screen according to claim 4, characterized in that An inner hopper (12) is connected to the inlet port of the screw conveyor (3), and an upper end of the inner hopper (12) is opposite to an outlet of the suction feeder (1).

6. Mobile feeding device for a vibrating screen according to claim 4, characterized in that A rotary telescopic cylinder (4) is arranged on one side of the support and located above the lower hopper (2), and a working end of the rotary telescopic cylinder (4) is connected to the upper cover (10) for closing or opening the upper end of the lower hopper (2).

7. Mobile feeding device for a vibrating screen according to any one of claims 1 to 3, 5 and 6, characterized in that, The support comprises a lower support frame (7) and an upper support frame (6) arranged on the lower support frame (7) and having a "T" shape in a side view, a lower end of the upper support frame (6) and one end of a horizontal part of the upper support frame (6) are connected to the lower support frame (7), and the other end of the horizontal part is provided with the lower hopper (2) so that the lower hopper (2) extends above the vibrating screen (9).

8. Mobile feeding device for a vibrating screen according to claim 7, characterized in that The upper support frame (6) is connected to the lower support frame (7) in a lifting manner.

9. Mobile feeding device for a vibrating screen according to claim 8, characterized in that The lower end of the upper support frame (6) is connected to the lower support frame (7) through a telescopic driving mechanism (5), and one end of the horizontal part of the upper support frame (6) is provided with a sliding sleeve, and the lower support frame (7) is provided with a sliding rod penetrating through the sliding sleeve and connected to the sliding sleeve in a sliding manner.

10. Mobile feeding device for a vibrating screen according to claim 8 or 9, characterized in that The lower support frame (7) is provided with a roller at the bottom.

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