Spiral conveying device

Abstract

The spiral conveying device comprises a conveying mechanism and a draught fan, the conveying mechanism comprises a conveying pipeline, a spiral rod, a motor and a sealing cover, the spiral rod is rotationally arranged in the conveying pipeline in a sleeved mode, the motor is in transmission connection with the spiral rod, and a feeding port and a discharging port are formed in the two opposite sides of the conveying pipeline respectively. The sealing cover is connected to the outer wall of the conveying pipeline in a sealed mode, a cavity is defined by the sealing cover and the outer wall of the conveying pipeline, a water inlet and a water outlet are formed in the cavity, the fan is installed above the feeding port, and by means of the fan, negative pressure is formed in the conveying pipeline, hot air exhausting is accelerated, and the cooling speed of plastic particles is increased; the temperature of the side wall of the conveying pipeline can be increased when the plastic particles make contact with the inner wall of the conveying pipeline for a long time, the temperature of the side wall of the conveying pipeline is further reduced through cold water in the cavity, the cooling speed of the plastic particles is further increased, and the problem that the cut plastic particles are bonded in the spiral conveyor is effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, specifically to a screw conveyor device. Background Technology

[0002] Plastic granules are raw materials for storing, transporting, and processing plastics in a semi-finished form. Common types of plastic granules include general-purpose plastics, engineering plastics, and specialty plastics. In the processing of plastic granules, a plastic granulator is the main supporting equipment of the granulation production unit. For example, the utility model patent CN220373660U, entitled "A Plastic Granulator," includes a plastic granulator body, a motor, a spiral conveyor shaft, heating elements, an electric push rod, and a cutting frame. A motor is fixedly installed at one end of the plastic granulator body, and the motor's output drives the spiral conveyor shaft that enters the interior of the plastic granulator body. Heating elements are spirally distributed inside the plastic granulator body along the conveying direction. The main body of the plastic granulator has several rows of extrusion holes at different heights at its output end. A cutting frame is located outside the extrusion holes on the main body of the plastic granulator. The cutting frame includes side plates symmetrically distributed on both sides. Several positive and negative electrodes are installed on the side plates at equal intervals. Heating wires are connected between the positive and negative electrodes and are parallel to each other. An electric push rod is fixedly installed at the tail end of the main body of the plastic granulator. The output end of the electric push rod is fixedly connected to the cutting frame. By replacing the single heating wire of the existing technology with multiple sets of parallel heating wires, the extrusion holes at different heights can be cut by heating wires at different heights during the cutting process, ensuring the synchronization of the heating wire cutting time and thus ensuring the uniformity of the plastic granules.

[0003] After the plastic granules are produced, they need to be transported to a certain height by a bolt conveyor for the next stage of processing. However, the freshly cut plastic granules are still hot, which makes them prone to sticking together inside the screw conveyor, resulting in poor processing effect. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a screw conveyor device to solve the technical problem that freshly cut plastic particles are prone to sticking together inside the screw conveyor.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] This utility model provides a screw conveying device, including a conveying mechanism and a fan. The conveying mechanism includes a conveying pipe, a screw rod, a motor, and a sealing cover. The screw rod is rotatably sleeved inside the conveying pipe. The motor is drivenly connected to the screw rod. An inlet and an outlet are respectively opened on opposite sides of the conveying pipe. The sealing cover is sealed to the outer wall of the conveying pipe and forms a cavity with the outer wall of the conveying pipe. The cavity has a water inlet and a water outlet. The fan is installed above the inlet.

[0007] In some embodiments, the conveying mechanism further includes a support for supporting the conveying pipe in an inclined state, with the inlet facing upward and the outlet facing downward, and the inlet being lower than the outlet.

[0008] In some embodiments, the sealing cover is disposed opposite to the feed inlet.

[0009] In some embodiments, the cavity is provided with a plurality of support rods, and the support rods are distributed alternately at equal intervals.

[0010] In some embodiments, the feed inlet is equipped with a funnel.

[0011] In some embodiments, an inclined plate is installed inside the funnel, and the fan is installed at the top of the funnel.

[0012] In some embodiments, the discharge port is equipped with a guide hopper.

[0013] In some embodiments, the motor is equipped with a speed reducer.

[0014] In some embodiments, the sidewall of the delivery pipe has an opening.

[0015] In some embodiments, the opening is fitted with a flip-top cover.

[0016] Compared with the prior art, the spiral conveying device provided by this utility model creates negative pressure in the conveying pipe through the setting of a fan, which accelerates the discharge of hot air and speeds up the cooling of plastic granules. At the same time, the long-term contact between the plastic granules and the inner wall of the conveying pipe will increase the temperature of the side wall of the conveying pipe. Furthermore, the use of cold water in the cavity reduces the temperature of the side wall of the conveying pipe, further accelerating the cooling of the plastic granules. This effectively avoids the problem of freshly cut plastic granules sticking together in the spiral conveyor. Attached Figure Description

[0017] Figure 1 This is a three-dimensional view of a screw conveyor device provided in an embodiment of this utility model;

[0018] Figure 2 yes Figure 1 Top view;

[0019] Figure 3 yes Figure 2 Sectional view of AA.

[0020] Explanation of reference numerals in the attached drawings: 1. Conveying mechanism; 11. Conveying pipe; 111. Inlet; 112. Outlet; 113. Funnel; 114. Inclined plate; 115. Guide hopper; 116. Opening; 117. Flip-top cover; 12. Screw rod; 13. Motor; 14. Sealing cover; 141. Cavity; 142. Water inlet; 143. Water outlet; 144. Support rod; 15. Bracket; 16. Reducer; 2. Fan. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0022] To address the technical problem of freshly cut plastic granules easily sticking together inside a screw conveyor, this invention provides a screw conveying device that can prevent freshly cut plastic granules from sticking together inside the screw conveyor.

[0023] It should be noted that the screw conveyor device described in this utility model is used for, but not limited to, plastic granules. For ease of explanation, this utility model only uses the application of a screw conveyor device to plastic granules as an example. The principle of the screw conveyor device applied to other types of equipment is essentially the same as that applied to plastic granules, and will not be described in detail here.

[0024] Please see Figure 1 - Figure 3 ,in Figure 1 This is a schematic diagram of the structure of a screw conveyor in one embodiment of the present invention. The screw conveyor includes a conveying mechanism 1 and a fan 2. The conveying mechanism 1 includes a conveying pipe 11, a screw rod 12, a motor 13 and a sealing cover 14. The screw rod 12 is rotatably sleeved inside the conveying pipe 11. The motor 13 is connected to the screw rod 12 for transmission. The conveying pipe 11 has an inlet 111 and an outlet 112 on opposite sides. The sealing cover 14 is sealed to the outer wall of the conveying pipe 11 and forms a cavity 141 with the outer wall of the conveying pipe 11. The cavity 141 has an inlet 142 and an outlet 143. The fan 2 is installed above the inlet 111.

[0025] In this embodiment, the fan 2 creates a negative pressure inside the conveying pipe 11, accelerating the discharge of hot air and speeding up the cooling of the plastic particles. At the same time, the long-term contact between the plastic particles and the inner wall of the conveying pipe 11 increases the temperature of the side wall of the conveying pipe 11. Furthermore, the cooling water in the cavity 141 reduces the temperature of the side wall of the conveying pipe 11, further accelerating the cooling of the plastic particles and effectively preventing the problem of the freshly cut plastic particles sticking together inside the conveying pipe 11.

[0026] Furthermore, filters are installed at both the air inlet and outlet of the fan 2 to prevent impurities from passing through and affecting the service life of the fan 2.

[0027] Furthermore, the cavity 141 is sealed, and the inlet 142 and outlet 143 are both sealed by flanges to prevent cold water from leaking during circulation. The method of circulating cold water in the cavity 141 is existing technology in the field, so it will not be described in detail.

[0028] In one embodiment, the conveying mechanism 1 further includes a support 15 for supporting the conveying pipe 11 in an inclined state, with the inlet 111 facing upward and the outlet 112 facing downward, and the inlet 111 being lower than the outlet 112.

[0029] In this embodiment, the support 15 includes a tall rod and a short rod. The tall rod supports one end of the discharge port 112, and the short rod supports one end of the inlet port 111, thereby achieving the inclined state of the conveying pipe 11. The support 15 is fixedly connected to the ground by bolts to prevent the support 15 from shifting during long-term operation.

[0030] It should be noted that by having the inlet 111 facing upwards and the outlet 112 facing downwards, and by having the inlet 111 lower than the outlet 112, the plastic granules rise and then fall autonomously to the next processing stage as the outlet 112 faces downwards.

[0031] In one embodiment, the sealing cover 14 is disposed opposite to the feed inlet 111.

[0032] In this embodiment, the plastic particles are cooled down immediately after falling into the conveying pipe 11 from the feed inlet 111, thus preventing the plastic particles from sticking together as they move with the screw rod 12.

[0033] In one embodiment, the cavity 141 is provided with a plurality of support rods 144, and the support rods 144 are distributed at equal intervals and staggered.

[0034] In this embodiment, the various intricate support rods 144 increase the flow time of water in the cavity 141, allowing the water sufficient time to carry away the heat from the side wall of the delivery pipe 11.

[0035] In one embodiment, the feed inlet 111 is fitted with a funnel 113.

[0036] In this embodiment, the funnel 113 is used to expand the range of the feed inlet 111, making it easier for plastic particles to enter the conveying pipe 11.

[0037] In one embodiment, an inclined plate 114 is installed inside the funnel 113, and a fan 2 is installed at the top of the funnel 113.

[0038] In this embodiment, the function of the inclined plate 114 is to prolong the time it takes for the plastic particles to fall into the feed inlet 111, so that the plastic particles have more time to dissipate heat during the falling process.

[0039] Furthermore, a trapezoidal channel is installed between the fan 2 and the funnel 113 to facilitate the collection of hot air, which is then extracted by the fan 2.

[0040] In one embodiment, the discharge port 112 is equipped with a guide bucket 115.

[0041] In this embodiment, the guide bucket 115 is used to assist the plastic particles to be discharged from the conveying pipe 11 in a designated direction.

[0042] In one embodiment, the motor 13 is equipped with a speed reducer 16.

[0043] In this embodiment, the motor 13 is equipped with a reducer 16, which is common knowledge in the art, so it will not be described in detail.

[0044] In one embodiment, the sidewall of the delivery pipe 11 has an opening 116.

[0045] In this embodiment, the opening 116 serves to further improve heat dissipation within the conveying pipe 11.

[0046] In one embodiment, the opening 116 is fitted with a flip cover 117.

[0047] In this embodiment, during winter, there is no need to add an extra heat dissipation opening 116; the opening 116 can be blocked by flipping the cover 117.

[0048] To better understand this utility model, the following is combined with... Figures 1 to 3 The technical solution of this utility model is described in detail below:

[0049] First, cold water is poured into the inlet 142. After the cold water fills the cavity 141, it is discharged from the outlet 143. Through a water storage tank and a water pump, water is recycled, saving resources and ensuring that the cavity 141 is always filled with cold water. This keeps the sidewall of the conveying pipe 11 at a low temperature, providing a cool space for the plastic granules and preventing the sidewall of the conveying pipe 11 from overheating due to prolonged contact. Then, the fan 2 is turned on to accelerate the discharge of hot air from the funnel 113 or the conveying pipe 11, further improving the heat dissipation effect. Finally, the freshly cut plastic granules fall... As the plastic particles fall into the funnel 113 and continue to fall through the inclined plate 114 to the feed inlet 111, they are cooled down by the fan 2 during this falling process. The plastic particles entering the conveying pipe 11 are further cooled by the cold water in the cavity 141. During operation, the hot air can be quickly discharged from the opening 116. At the same time, the fan 2 also creates a certain negative pressure in the conveying pipe 11, which accelerates the flow rate of hot air in the conveying pipe 11 and further accelerates the cooling of the plastic particles. This effectively prevents the plastic particles from sticking together in the conveying pipe 11 and improves the processing effect of the plastic particles.

[0050] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A screw conveyor, characterized in that The utility model relates to a kind of conveying mechanism and water cooling system, including: Conveying mechanism, the conveying mechanism includes conveying pipe, screw rod, motor and sealing cover, the screw rod rotationally sets in the conveying pipe, the motor is connected with the screw rod transmission, the opposite sides of the conveying pipe are respectively provided with feeding port and discharge port, the sealing cover is sealingly connected to the outer wall of the conveying pipe and is surrounded with the outer wall of the conveying pipe cavity, the cavity is provided with water inlet and water outlet;And Fan, the fan is installed above the feeding port.

2. A screw conveyor according to claim 1, wherein The conveying mechanism further includes a support for supporting the conveying pipe in an inclined state, the feeding port faces upward, the discharge port faces downward, and the feeding port is lower than the discharge port.

3. A screw conveyor as claimed in claim 1, wherein The sealing cover is arranged opposite to the feeding port.

4. A screw conveyor as claimed in claim 1, wherein The cavity is provided with a plurality of support rods, and each support rod is distributed at equal intervals.

5. A screw conveyor as claimed in claim 1, wherein, The feeding port is provided with a hopper.

6. A screw conveyor according to claim 5, wherein The hopper is provided with an inclined plate, and the fan is installed at the top end of the hopper.

7. A screw conveyor as claimed in claim 1, wherein The discharge port is provided with a guide hopper.

8. A screw conveyor as defined in claim 1, wherein The motor is provided with a speed reducer.

9. A screw conveyor as defined in claim 1, wherein The side wall of the conveying pipe is provided with an opening.

10. A screw conveyor according to claim 9, wherein The opening is provided with a turnover cover.

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