CN209971479U

CN209971479U - Screw rod conveying equipment

Info

Publication number: CN209971479U
Application number: CN201920720113.7U
Authority: CN
Inventors: 余文俊
Original assignee: SHANGHAI TANGKE NEW PACKAGE MATERIAL Co Ltd
Current assignee: Shanghai Tangke New Material Technology Co.,Ltd.
Priority date: 2019-05-18
Filing date: 2019-05-18
Publication date: 2020-01-21
Anticipated expiration: 2029-05-18

Abstract

The utility model belongs to the technical field of the plastics technique of extruding and specifically relates to a screw rod conveying equipment is related to, including first order barrel and second order barrel, be equipped with first order extrusion screw rod in the first order barrel, be equipped with the second order in the second order barrel and extrude the screw rod, first order extrusion screw rod and second order extrusion screw rod all connect driving motor, are equipped with feed inlet and delivery outlet on the first order barrel, are equipped with input port and discharge gate on the second order barrel, and the delivery outlet passes through the pipeline and links to each other with the input port. The utility model uses the central tube, the spiral tube and the inner wall of the pipeline to form a narrow spiral channel, thus prolonging the path of the material passing through the pipeline, leading the material and the spiral tube to have sufficient contact area and contact time, leading the cooling liquid to be communicated in the spiral tube, exchanging heat with the material and leading the material to be cooled rapidly; utilize solenoid valve control only first liquid pipe to lead to the coolant liquid (cooling effect is general), or first liquid pipe leads to the coolant liquid simultaneously with the second liquid pipe (cooling effect is better), adjustable cooling effect.

Description

Screw rod conveying equipment

Technical Field

The utility model belongs to the technical field of the plastics extrusion technique and specifically relates to a screw rod conveying equipment is related to.

Background

The screw extruder is an important device for heating and extruding plastic raw materials, after the plastic raw materials enter a machine barrel from a feeding port, the plastic raw materials are plasticized after being heated and extruded under the action of a screw, and are pushed to a discharging port under the driving of the screw, and then various plastic products are manufactured through corresponding auxiliary dies or equipment. In order to ensure the extrusion effect, plastics are often required to be subjected to a series of processes such as preliminary plasticizing, complete plasticizing, pressure output establishment and the like in the extrusion process, and the conventional single-screw structure is adopted to ensure that the realization of the series of processes has to make the structure of the screw relatively complex and the length of the screw longer, which brings great difficulty to design and manufacture, brings inconvenience to maintenance and use, and simultaneously causes the quality of a finished product to be influenced to a certain extent.

The utility model discloses a utility model patent that grant bulletin number is CN201446671U discloses a novel serial-type single screw extruder, including first order barrel, second order barrel, install first order extrusion screw in the first order barrel, install the second order in the second order barrel and extrude the screw rod, the one end that first order extrusion screw rod and second order extruded the screw rod all links to each other with the reducing gear box that corresponds, and the reducing gear box links to each other with the driving motor who corresponds, and the delivery outlet of first order barrel passes through the pipeline and links to each other with the input port of second order barrel, and the feed inlet is located first order barrel, and the discharge gate is located the second order barrel.

The temperature of the material in the pipeline is controlled to be critical, and the material in the pipeline is discharged from the first-stage cylinder and fed into the second-stage cylinder, so that the discharge temperature of the second-stage cylinder is overhigh due to overhigh discharge temperature of the first-stage cylinder, the product quality is influenced, and the temperature of the material in the pipeline needs to be reduced. The cooling method of the novel tandem single-screw extruder is to reduce the rotating speed of the driving motor so as to reduce the heat generated by the screw for material calendering, friction and shearing, but the heat in the material is conducted to the barrel body of the machine barrel and air, so the cooling speed is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a screw rod conveying equipment can accelerate the cooling of material among the screw rod conveying equipment.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a screw rod conveying equipment, includes first order barrel and second order barrel, is equipped with first order extrusion screw rod in the first order barrel, is equipped with the second order in the second order barrel and extrudes the screw rod, and first order extrusion screw rod and second order extrusion screw rod all connect driving motor, are equipped with feed inlet and delivery outlet on the first order barrel, are equipped with input port and discharge gate on the second order barrel, and the delivery outlet passes through the pipeline and links to each other with the input port, be equipped with center tube and spiral pipe in the pipeline, spiral pipe winding center tube setting, outer wall and pipeline seamless connection that the spiral pipe corresponds with the external diameter, outer wall and center tube seamless connection that the spiral pipe corresponds with the internal diameter, the pipe connection cooling water.

Through adopting above-mentioned technical scheme, enclose into constrictive screw-tupe passageway with center tube and spiral pipe and pipeline inner wall, prolonged the route that the material passes through the pipeline, make material and spiral pipe have abundant area of contact and contact time, and lead to in the spiral pipe has the coolant liquid, can with the material heat transfer, make material rapid cooling.

Preferably, both ends of the central pipe are also penetrated out of the pipeline to be connected with a water chilling unit, and the central pipe is also used for introducing cooling liquid.

Through adopting above-mentioned technical scheme, make the center tube also can with the material heat transfer, improved the speed of cooling down the material.

Preferably, the side wall of the pipeline is provided with a spiral hole, the spiral path of the spiral hole is the same as that of the spiral pipe, the spiral hole is filled with a solder layer, and the solder layer is in seamless fixed connection with the outer wall of the spiral pipe.

By adopting the technical scheme, the spiral hole is formed in the side wall of the pipeline, and the spiral pipe and the pipeline are welded and fixed in the spiral hole in a seamless mode, so that the spiral pipe and the pipeline are convenient to connect and fix.

Preferably, the pipe is formed by seamless welding of two semicircular plates.

By adopting the technical scheme, the connection and fixation of the spiral pipe and the pipeline are facilitated.

Preferably, the end part of the pipeline is connected with an arc adapter tube, and the input port and/or the output port are connected with the pipeline through the arc adapter tube.

Through adopting above-mentioned technical scheme, set up the arc switching pipe and can make the material smoothly pass through the corner, prevent the corner putty.

Preferably, the pipeline is provided with a first temperature sensor, and a probe of the first temperature sensor extends into one end, close to the input port, of the spiral pipe in the pipeline; a probe of the second temperature sensor extends into one end, far away from the input port, of the second stage cylinder; the first temperature sensor and the second temperature sensor are both connected with a temperature controller, and the temperature controller is connected with a water chilling unit.

By adopting the technical scheme, when the temperature of the material in the pipeline is measured by the first temperature sensor to be higher than a set value, the first temperature sensor sends an electric signal to the temperature controller, and the temperature controller controls the water chilling unit to feed cooling liquid into the spiral pipe and the central pipe; when the materials in the pipeline are cooled to be lower than another set value, the first temperature sensor sends an electric signal to the temperature controller, and the temperature controller controls the water chilling unit to stop introducing cooling liquid into the spiral pipe and the central pipe.

Preferably, the pipeline is provided with a pressure sensor, a probe of the pressure sensor extends into the pipeline and is provided with a spiral pipe, the pressure sensor is connected with a pressure controller, and the pressure controller is connected with a driving motor.

By adopting the technical scheme, when the pressure in the pipeline is higher than a set value, the pressure sensor sends an electric signal to the pressure controller, and the pressure controller controls the driving motor to decelerate; when the pressure in the pipeline is reduced to be lower than another set value, the pressure sensor sends an electric signal to the temperature controller, and the temperature controller controls the driving motor to accelerate.

Preferably, a solenoid valve is arranged on a cooling liquid discharge pipe of the water chilling unit, a first liquid pipe and a second liquid pipe are connected in parallel to the solenoid valve, the first liquid pipe is communicated with one end of the spiral pipe, the second liquid pipe is communicated with one end of the central pipe, and the other ends of the spiral pipe and the central pipe are communicated with a cooling liquid return pipe of the water chilling unit.

Through adopting above-mentioned technical scheme, utilize solenoid valve control only first liquid pipe to lead to the coolant liquid (the cooling effect is general), or first liquid pipe and second liquid pipe lead to the coolant liquid simultaneously (the cooling effect is better), adjustable cooling effect.

To sum up, the utility model discloses a beneficial technological effect does:

1. a narrow spiral channel is formed by enclosing the central tube, the spiral tube and the inner wall of the pipeline, so that the path of the material passing through the pipeline is prolonged, the material and the spiral tube have sufficient contact area and contact time, and the cooling liquid is introduced into the spiral tube and can exchange heat with the material to quickly cool the material;

2. utilize solenoid valve control only first liquid pipe to lead to the coolant liquid (cooling effect is general), or first liquid pipe leads to the coolant liquid simultaneously with the second liquid pipe (cooling effect is better), adjustable cooling effect.

Drawings

FIG. 1 is a schematic view of the overall structure of a screw conveyor apparatus in example 1;

FIG. 2 is a schematic view of the first stage barrel, the second stage barrel and the pipe of FIG. 1 taken apart;

fig. 3 is a schematic view of an end structure of a pipe.

In the figure, 1, the first stage cylinder; 1a, a feed inlet; 1b, an output port; 2. a first stage extrusion screw; 3. a second stage barrel; 3a, an input port; 3b, a discharge hole; 4. a second stage extrusion screw; 5. a drive motor; 6. a speed reducer; 7. a pipeline; 7a, a spiral hole; 71. a semicircular plate; 8. a central tube; 9. a spiral tube; 10. a solder layer; 11. a water chilling unit; 11a, a cooling liquid return pipe; 11b, a coolant discharge pipe; 12. an arc-shaped transfer pipe; 13. a first temperature sensor; 14. a second temperature sensor; 15. a temperature controller; 16. a pressure sensor; 17. a pressure controller; 18. an electromagnetic valve; 19. a first liquid pipe; 20. a second liquid pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1: fig. 1 is the utility model discloses a screw conveying equipment, comprises first stage barrel 1, second stage barrel 3 and straight long pipeline 7. A first-stage extrusion screw 2 (shown in figure 2) is arranged in the first-stage cylinder 1, a second-stage extrusion screw 4 (shown in figure 2) is arranged in the second-stage cylinder 3, and the first-stage extrusion screw 2 and the second-stage extrusion screw 4 are both connected with a speed reducer 6 and a driving motor 5.

As shown in FIG. 2, the first stage cylinder 1 is provided with a feed inlet 1a and an output port 1b, the feed inlet 1a and the output port 1b are respectively located at both ends of the working section of the first stage extrusion screw 2, the feed inlet 1a is used for feeding polyester granules into the first stage cylinder 1, and the polyester granules are discharged from the output port 1b after being melted in the first stage cylinder 1. An inlet 3a and a discharge port 3b are arranged on the second-stage machine barrel 3, and the inlet 3a and the discharge port 3b are respectively positioned at two ends of the working section of the second-stage extrusion screw 4. Delivery port 1b passes through pipeline 7 and is connected with input port 3a, and pipeline 7 and delivery port 1b or delivery port 1b can not directly link the department and pass through arc switching pipe 12 and be connected, and arc switching pipe 12 can make the material smoothly pass through the corner, prevents the corner putty. The molten material discharged from the first stage cylinder 1 enters the second stage cylinder 3 through a pipe 7, and is finally discharged from a discharge port 3b of the second stage cylinder 3.

As shown in fig. 2, a central tube 8 and a spiral tube 9 are arranged in the pipeline 7, the central tube 8 is positioned on the central axis of the pipeline 7, and the spiral tube 9 is wound around the central tube 8. The outer wall that spiral pipe 9 and its external diameter correspond is seamless with pipeline 7, and spiral pipe 9 and the outer wall that its internal diameter corresponds are seamless with center tube 8, and the pipeline 7 connection cooling water set 11 is worn out at the both ends of spiral pipe 9, and the pipeline 7 connection cooling water set 11 is also worn out at the both ends of center tube 8, and cooling water set 11 is used for letting in the coolant liquid in spiral pipe 9 and the center tube 8.

With reference to fig. 1 and 2, a spiral hole 7a is formed in the side wall of the pipe 7, the spiral path of the spiral hole 7a is the same as that of the spiral pipe 9, a solder layer 10 is filled in the spiral hole 7a, and the solder layer 10 is fixedly connected to the outer wall of the spiral pipe 9 in a seamless manner. The concrete mode of seamless fixing of spiral pipe 9 and pipeline 7 inner wall does: the spiral pipe is extended into the pipe 7, the spiral pipe 9 is aligned with the spiral hole 7a, then welding wires are melted in the spiral hole 7a by a welding gun to form a welding flux layer 10, and the welding flux layer 10 enables the pipe 7 and the spiral pipe 9 to be connected into a whole.

As shown in fig. 1, a first temperature sensor 13 is mounted on the pipe 7, and a probe of the first temperature sensor 13 extends into one end of the pipe 7 near the input port 3 a. The second stage barrel 3 is provided with a second temperature sensor 14, and a probe of the second temperature sensor 14 extends into one end of the second stage barrel 3 far away from the input port 3 a. The first temperature sensor 13 and the second temperature sensor 14 are both connected with a temperature controller 15, and the temperature controller 15 is connected with the water chilling unit 11. When the temperature of the material in the pipeline 7 measured by the first temperature sensor 13 is higher than a set value, an electric signal is sent to the temperature controller 15, and the temperature controller 15 controls the water chilling unit 11 to feed cooling liquid into the spiral pipe 9 and the central pipe 8; when the material in the pipeline 7 is cooled to be lower than another set value, the first temperature sensor 13 sends an electric signal to the temperature controller 15, and the temperature controller 15 controls the water chilling unit 11 to stop introducing the cooling liquid into the spiral pipe 9 and the central pipe 8. The temperature control principle of the second temperature sensor 14 is the same as that of the first temperature sensor 13.

As shown in figure 1, a pressure sensor 16 is arranged on the pipeline 7, a probe of the pressure sensor 16 extends into the pipeline 7 and is provided with a spiral pipe 9, the pressure sensor 16 is connected with a pressure controller 17, and the pressure controller 17 is connected with the driving motor 5 on the first-stage cylinder 1. When the pressure in the pipeline 7 is higher than the set value, the pressure sensor 16 sends an electric signal to the pressure controller 17, and the pressure controller 17 controls the driving motor 5 on the first-stage cylinder 1 to decelerate; when the pressure in the conduit 7 drops below another set value, the pressure sensor 16 sends an electrical signal to the temperature controller 15, and the temperature controller 15 controls the drive motor 5 on the first stage barrel 1 to accelerate.

As shown in fig. 2, a solenoid valve 18 is disposed on the coolant discharge pipe 11b of the chiller 11, a first liquid pipe 19 and a second liquid pipe 20 are connected in parallel to the solenoid valve 18, the first liquid pipe 19 is connected to one end of the coil 9, the second liquid pipe 20 is connected to one end of the central pipe 8, and the other ends of the coil 9 and the central pipe 8 are connected to the coolant return pipe 11a of the chiller 11. When the electromagnetic valve 18 is used for controlling the first liquid pipe 19 to be communicated with cooling liquid, the cooling effect on the materials is general; when the electromagnetic valve 18 is used for controlling the first liquid pipe 19 and the second liquid pipe 20 to be simultaneously communicated with cooling liquid, the cooling effect on the materials is better. The cooling effect on the material can be adjusted through the control of the electromagnetic valve 18.

The implementation principle of the embodiment is as follows: enclose into constrictive screw-tupe passageway with 7 inner walls of pipeline with center tube 8 and spiral pipe 9, prolonged the route that the material passes through pipeline 7, make material and spiral pipe 9 have abundant area of contact and contact time, and all lead to the coolant liquid in spiral pipe 9 and the center tube 8, can with the material heat transfer, make material rapid cooling.

Example 2: as shown in fig. 3, unlike the connection method of the pipe 7 and the spiral pipe 9 in example 1, the pipe 7 is not provided with the spiral hole 7a, but the spiral pipe is welded to two semicircular plates 71 in sequence, and then the two semicircular plates 71 are welded into the pipe 7 without seams.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a screw rod conveying equipment, including first order barrel (1) and second order barrel (3), be equipped with first order extrusion screw (2) in first order barrel (1), be equipped with second order extrusion screw (4) in second order barrel (3), first order extrusion screw (2) and second order extrusion screw (4) are all connected driving motor (5), be equipped with feed inlet (1 a) and delivery outlet (1 b) on first order barrel (1), be equipped with input port (3 a) and discharge gate (3 b) on second order barrel (3), delivery outlet (1 b) link to each other with input port (3 a) through pipeline (7), its characterized in that: be equipped with center tube (8) and spiral pipe (9) in pipeline (7), spiral pipe (9) winding center tube (8) set up, outer wall and pipeline (7) seamless connection that spiral pipe (9) and external diameter correspond, outer wall and center tube (8) seamless connection that spiral pipe (9) and internal diameter correspond, pipeline (7) connection cooling water set (11) are worn out at the both ends of spiral pipe (9), and spiral pipe (9) are used for leading to the coolant liquid.

2. A screw conveyor apparatus according to claim 1, wherein: the two ends of the central pipe (8) also penetrate through the pipeline (7) to be connected with a water chilling unit (11), and the central pipe (8) is also used for introducing cooling liquid.

3. A screw conveyor apparatus according to claim 1, wherein: the pipeline is characterized in that a spiral hole (7 a) is formed in the side wall of the pipeline (7), the spiral path of the spiral hole (7 a) is the same as that of the spiral pipe (9), a solder layer (10) is filled in the spiral hole (7 a), and the solder layer (10) is in seamless fixed connection with the outer wall of the spiral pipe (9).

4. A screw conveyor apparatus according to claim 1, wherein: the pipeline (7) is formed by two semicircular plates (71) through seamless welding.

5. A screw conveyor apparatus according to claim 1, wherein: the end part of the pipeline (7) is connected with an arc-shaped adapter tube (12), and the input port (3 a) and/or the output port (1 b) are connected with the pipeline (7) through the arc-shaped adapter tube (12).

6. A screw conveyor apparatus according to claim 1, wherein: a first temperature sensor (13) is arranged on the pipeline (7), and a probe of the first temperature sensor (13) extends into one end, close to the input port (3 a), of the spiral pipe (9) in the pipeline (7); a second temperature sensor (14) is arranged on the second-stage cylinder (3), and a probe of the second temperature sensor (14) extends into one end, far away from the input port (3 a), of the second-stage cylinder (3); the first temperature sensor (13) and the second temperature sensor (14) are both connected with a temperature controller (15), and the temperature controller (15) is connected with the water chilling unit (11).

7. A screw conveyor apparatus according to claim 1, wherein: install pressure sensor (16) on pipeline (7), pressure sensor's (16) probe stretches to have spiral pipe (9) department in pipeline (7), and pressure sensor (16) connect pressure controller (17), and driving motor (5) are connected in pressure controller (17).

8. A screw conveyor apparatus according to claim 2, wherein: the cooling water system is characterized in that an electromagnetic valve (18) is arranged on a cooling liquid discharge pipe (11 b) of the water chilling unit (11), a first liquid pipe (19) and a second liquid pipe (20) are connected to the electromagnetic valve (18) in parallel, the first liquid pipe (19) is communicated with one end of the spiral pipe (9), the second liquid pipe (20) is communicated with one end of the central pipe (8), and the other ends of the spiral pipe (9) and the central pipe (8) are communicated with a cooling liquid return pipe (11 a) of the water chilling unit (11).