Screw feeder for polyvinyl chloride granule production

Abstract

The utility model relates to the technical field of screw feeders, in particular to a screw feeder for polyvinyl chloride granule production, which comprises a feeding device and a direction adjusting device. The feeding device comprises a bottom plate, two supporting frames connected with the top of the bottom plate, a conveying charging barrel movably connected between the two supporting frames, a first motor installed on one side of the conveying charging barrel, a spiral rod movably arranged in the conveying charging barrel and connected with an output shaft of the first motor, and a direction adjusting device. And the direction adjusting device comprises a plate body mounted at the bottom of the conveying charging barrel. In the utility model, under the condition that the left end of the conveying charging barrel is determined to be inclined downwards, the motor I is started, then the screw rod conveys raw materials, when a small amount of raw materials are left, the external PLC controls the output shaft of the motor II to steer, so that the hydraulic cylinder of which the movable end is in a contraction state moves rightwards, and then the right end of the conveying charging barrel is inclined downwards under the pulling of the ball head rod; and most of the residual raw materials in the conveying charging barrel slide out, so that the raw materials are effectively prevented from being retained.

Description

Technical Field

[0001] The utility model relates to the technical field of screw feeders, and particularly relates to a screw feeder for producing polyvinyl chloride pellets. Background Technique

[0002] Polyvinyl chloride pellets are a raw material commonly used in the production of plastic products. They are granular substances formed by subjecting polyvinyl chloride resin to specific process treatments. These pellets can be used to produce various soft and hard plastic products, such as door seals, profiles, pipes, films, etc.

[0003] The characteristics of polyvinyl chloride pellets include good extrusion performance, pure chromaticity, good gloss, etc. In addition, the hardness of polyvinyl chloride pellets can be adjusted as needed, and the common hardness range is between 50 - 90.

[0004] In the currently used screw feeding device, the screw rod is suspended inside the device. When there is a large amount of raw material, the accumulated raw material can be smoothly conveyed. However, when there is less raw material, since it cannot accumulate to a high enough height, the screw rod cannot be touched, and then after the feeding operation is completed, these granular raw materials still remain at the bottom of the device. Content of the Utility Model

[0005] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] For this reason, the technical solution adopted by the utility model is as follows:

[0007] A screw feeder for producing polyvinyl chloride pellets includes a feeding device and an alignment device. The feeding device includes a bottom plate, two support frames connected to the top of the bottom plate, a conveying barrel movably connected between the two support frames, a first motor installed on one side of the conveying barrel, and a screw rod movably disposed inside the conveying barrel and connected to the output shaft of the first motor. The alignment device includes a plate body installed at the bottom of the conveying barrel, a ball head rod slidably embedded at the bottom of the plate body, a second motor connected to the top of the plate body, a threaded rod connected to the output shaft of the second motor, a sliding plate attached to the top of the bottom plate and connected to the threaded rod, and a hydraulic cylinder connected between the ball head rod and the sliding plate.

[0008] By adopting the above technical solution, when it is determined that the left end of the conveying barrel inclines downward, start the first motor, and then the screw rod conveys the raw material. When there is a little raw material left, externally connect a PLC to control the rotation direction of the output shaft of the second motor, so that the hydraulic cylinder with the movable end in a contracted state moves to the right. Then, under the pulling of the ball head rod, the right end of the conveying barrel inclines downward, and then the remaining raw material in the conveying barrel slides out completely, effectively preventing the raw material from staying.

[0009] In a preferred embodiment of the present utility model, it can be further configured that: a U-shaped plate is sleeved outside the first motor, and the U-shaped plate is fixedly connected to the conveying barrel.

[0010] In a preferred embodiment of the present utility model, it can be further configured that: two guide rods are installed on the top of the bottom plate, and the two guide rods are vertically symmetric about the second motor, and the guide rods horizontally penetrate through the sliding plate.

[0011] In a preferred embodiment of the present utility model, it can be further configured that: a feeding hopper is installed on the top of the conveying barrel, and the feeding hopper is internally communicated with the conveying barrel.

[0012] In a preferred embodiment of the present utility model, it can be further configured that: a rectangular plate is movably sleeved outside the threaded rod, and the rectangular plate is fixedly connected to the top of the bottom plate.

[0013] In a preferred embodiment of the present utility model, it can be further configured that: both the first motor and the second motor are electrically connected to an external PLC.

[0014] By adopting the above technical solutions, the beneficial effects obtained by the present utility model are as follows:

[0015] 1. In the present utility model, when it is determined that the left end of the conveying barrel is inclined downward, the first motor is started, and then the spiral rod conveys the raw materials. When there is a little raw material left, the external PLC controls the rotation direction of the output shaft of the second motor, so that the hydraulic cylinder with the movable end in a contracted state moves to the right. Then, under the pulling of the ball head rod, the right end of the conveying barrel is inclined downward, and then the remaining raw materials in the conveying barrel all slide out, effectively preventing the raw materials from staying.

[0016] 2. In the present utility model, by controlling the first motor, the second motor, and the hydraulic cylinder throughout the process by an external PLC, the control of the device can be made more convenient, and the control cost of the device can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional view of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the feeding device of the present utility model;

[0019] Figure 3 is a schematic diagram of the direction adjusting device of the present utility model;

[0020] Figure 4 is a schematic diagram of the connection relationship between the plate body and the ball head rod of the present utility model.

[0021] Reference numerals:

[0022] 100, feeding device; 110, bottom plate; 120, support frame; 130, conveying barrel; 140, first motor; 150, spiral rod;

[0023] 200, Direction adjusting device; 210, Plate body; 220, Ball head rod; 230, Motor 2; 240, Threaded rod; 250, Slide plate; 260, Hydraulic cylinder;

[0024] 300, U-shaped plate;

[0025] 400, Guide rod;

[0026] 500, Feeding hopper. Specific implementation manners

[0027] To make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments may be combined with each other.

[0028] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0029] The following describes a screw feeder for polyvinyl chloride pellet production provided by some embodiments of the present utility model with reference to the accompanying drawings.

[0030] Embodiment 1:

[0031] Combined with Figures 1-4 As shown, a screw feeder for polyvinyl chloride pellet production provided by the present utility model includes a feeding device 100 and a direction adjusting device 200. The feeding device 100 includes a bottom plate 110, two support frames 120 connected to the top of the bottom plate 110, a conveying barrel 130 movably connected between the two support frames 120, a motor 1 140 installed on one side of the conveying barrel 130, and a screw rod 150 movably arranged inside the conveying barrel 130 and connected to the output shaft of the motor 1 140;

[0032] The direction adjusting device 200 includes a plate body 210 installed at the bottom of the conveying barrel 130, a ball head rod 220 slidably embedded at the bottom of the plate body 210, a motor 2 230 connected to the top of the plate body 210, a threaded rod 240 connected to the output shaft of the motor 2 230, a slide plate 250 attached to the top of the bottom plate 110 and connected to the threaded rod 240, and a hydraulic cylinder 260 connected between the ball head rod 220 and the slide plate 250.

[0033] Furthermore, a feeding hopper 500 is installed at the top of the conveying barrel 130. The feeding hopper 500 is communicated with the inside of the conveying barrel 130. The provision of the feeding hopper 500 facilitates the entry of raw materials into the inside of the conveying barrel 130.

[0034] Further, a rectangular plate is movably sleeved on the outer end of the threaded rod 240, and the rectangular plate is fixedly connected to the top of the bottom plate 110. The rectangular plate is provided to make the rotation of the threaded rod 240 more stable.

[0035] Further, the first motor 140, the second motor 230, and the hydraulic cylinder 260 are all electrically connected to an external PLC. The control mode of the present utility model is to achieve automatic control through the external PLC. The control circuit of the external PLC can be realized by simple programming by those skilled in the art, and the provision of power also belongs to the common knowledge in the art. Moreover, the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail. Then, with this structural design, the use comfort of the present device is improved.

[0036] Embodiment 2:

[0037] Combined with Figures 1-2 As shown, on the basis of Embodiment 1, a U-shaped plate 300 is sleeved outside the first motor 140, and the U-shaped plate 300 is fixedly connected to the conveying cylinder 130. The U-shaped plate 300 is provided to improve the connection firmness between the first motor 140 and the conveying cylinder 130.

[0038] Embodiment 3:

[0039] Combined with Figure 1 、 3 and Figure 4 As shown, in the above embodiment, two guide rods 400 are installed on the top of the bottom plate 110. The two guide rods 400 are vertically symmetric about the second motor 230. The guide rods 400 horizontally penetrate through the sliding plate 250. The guide rods 400 are provided to make the sliding plate 250 more stable.

[0040] The working principle and usage process of the present utility model: When the present device is put into actual use, first control the hydraulic cylinder 260 to be located at the left end of the threaded rod 240, then control the movable end of the hydraulic cylinder 260 to contract. Then, the ball head rod 220 pulls the plate body 210 and the left end of the conveying cylinder 130 to incline downward. The raw materials in the conveying cylinder 130 gather towards the left end. Then, when the first motor 140 is started, they are sent away by the spiral rod 150. Then, after the raw material conveying is completed, the external PLC controls the output shaft of the second motor 230 to reverse. Then, the hydraulic cylinder 260 with the movable end in the contracted state moves to the right. Then, under the pulling of the ball head rod 220, the right end of the conveying cylinder 130 inclines downward. Then, the remaining raw materials in the conveying cylinder 130 all slide out, effectively preventing the raw materials from staying.

[0041] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A screw feeder for the production of polyvinyl chloride pellets, characterized in that: include: A feeding device (100), the feeding device (100) comprising a bottom plate (110), two brackets (120) connected to the top of the bottom plate (110), a conveying barrel (130) movably connected between the two brackets (120), a motor (140) installed on one side of the conveying barrel (130), and a screw rod (150) movably arranged inside the conveying barrel (130) and connected to the output shaft of the motor (140); A direction adjustment device (200), the direction adjustment device (200) comprising a plate body (210) mounted on the bottom of the conveying barrel (130), a ball head rod (220) slidably embedded in the bottom of the plate body (210), a second motor (230) connected to the top of the plate body (210), a threaded rod (240) connected to the output shaft of the second motor (230), a slide plate (250) attached to the top of the base plate (110) and connected to the threaded rod (240), and a hydraulic cylinder (260) connected between the ball head rod (220) and the slide plate (250).

2. A screw feeder for producing polyvinyl chloride pellets according to claim 1, characterized in that: A U-shaped plate (300) is sleeved on the outer side of the motor 1 (140), and the U-shaped plate (300) is fixedly connected to the conveying barrel (130).

3. A screw feeder for producing polyvinyl chloride pellets according to claim 1, characterized in that: Two guide rods (400) are installed on the top of the bottom plate (110), the two guide rods (400) are vertically symmetrical with respect to the second motor (230), and the guide rods (400) penetrate the slide plate (250) in the horizontal direction.

4. A screw feeder for producing polyvinyl chloride pellets according to claim 1, characterized in that: A material guide hopper (500) is installed on the top of the conveying barrel (130), and the material guide hopper (500) is communicated with the interior of the conveying barrel (130).

5. The screw feeder for producing polyvinyl chloride pellets according to claim 1, characterized in that: A rectangular plate is movably sleeved on the outer end of the threaded rod (240), and the rectangular plate is fixedly connected to the top of the bottom plate (110).

6. A screw feeder for producing polyvinyl chloride pellets according to claim 1, characterized in that: The motor 1 (140) and the motor 2 (230) are both electrically connected to an external PLC.

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