CN105216276A - The air cooled chiller of thermoplastic pipes extruder - Google Patents

Abstract

The invention discloses an air-cooled cooler for a thermoplastic pipe extruder, which comprises an outer cooling pipe and an inner cooling pipe. The inlet end of the inner cooling pipe is fixedly connected with the inner extruding block at the extrusion end of the extruder, and the outer cooling pipe is provided with a plurality of outer air cooling holes, which form a plurality of parallel annular outer Air-cooling hole group, multiple outer air-cooling hole groups are equipped with an air-cooling ring on the outside, the air-cooling ring is connected to the air outlet of the temperature-controlled fan through the air pipe, and the inner cooling pipe is provided with a plurality of inner air-cooling holes. The inner extrusion block of the machine is provided with an air duct, the air outlet of the air duct is connected with the air inlet of the inner cooling pipe, and the air inlet of the air duct is connected with the air outlet of the constant temperature fan. The present invention air-cools the plastic pipe extruded by the extruder by arranging the outer cooling pipe and the inner cooling pipe, thereby reducing the requirement on the sealing performance of the cooler and avoiding various problems caused by water leakage without using water cooling.

Description

Air-cooled coolers for thermoplastic pipe extruders

technical field

The invention relates to a plastic processing equipment, in particular to an air-cooled cooler of a thermoplastic pipe extruder.

Background technique

The plastic extruder is also one of the types of plastic machinery. It is used to extrude plastic raw materials from the extrusion block with high extrusion pressure. After the molded plastic extruded cladding leaves the machine head, it should be cooled and shaped immediately, otherwise it will be deformed under the action of gravity. The cooling method is usually water cooling, which can be divided into rapid cooling and slow cooling according to the water temperature. However, water cooling requires better sealing. If the sealing is not good, water leakage will occur. If water leakage is found in the workshop, it will It will affect the environment of the workshop. If water leaks to the wires, it may cause electric leakage.

Contents of the invention

The object of the present invention is to provide an air-cooled cooler for a thermoplastic pipe extruder in order to solve the above problems.

The present invention achieves the above object through the following technical solutions:

An air-cooled cooler for a thermoplastic pipe extruder, comprising an outer cooling pipe and an inner cooling pipe, the inlet end of the outer cooling pipe is fixedly connected to the outer extrusion block at the extrusion end of the extruder, The inlet end of the inner cooling pipe is fixedly connected with the inner extrusion block at the extrusion end of the extruder, and the outer cooling pipe is provided with a plurality of external air cooling holes, which consist of a plurality of external air cooling holes A plurality of ring-shaped outer air-cooling hole groups parallel to each other, and an air-cooling ring is arranged on the outside of the plurality of outer air-cooling hole groups, and the air-cooling ring is connected to the air outlet of the temperature-controlled fan through an air duct. The cooling pipe is provided with a plurality of internal air-cooling holes, the inner extruded block of the extruder is provided with an air duct, the air outlet of the air duct is connected with the air inlet of the inner cooling pipe, and the air duct The air inlet of the fan is connected with the air outlet of the constant temperature fan.

When the extruded plastic pipe needs to be cooled, the cooling air can be input into the external cooling pipe and the internal cooling pipe through the temperature-controlled fan and the constant temperature fan to make it air-cool the plastic pipe, avoiding the use of water cooling and reducing the cooling capacity of the cooler. Sealing requirements; at the same time, two cooling pipes inside and outside are used to make the air pressure inside and outside the plastic pipe equal, preventing it from collapsing or bulging due to the difference in air pressure inside and outside before cooling.

Specifically, there are multiple temperature-controlled fans, and each of the air-cooled rings is connected to the air outlets of different temperature-controlled fans, and the plurality of temperature-controlled fans pass through the inlet of the outer cooling pipe. The temperature at the pipe outlet of the external cooling pipe decreases sequentially.

The gradual cooling type slow cooling can reduce the internal stress of plastic products and avoid cracks and other phenomena during use.

Further, the cooler also includes a thermoelectric cooling sheet, the cooling end of the thermoelectric cooling sheet is arranged outside the outer cooling pipe, and the heat release end of the thermoelectric cooling sheet is arranged in the extrusion chamber of the extruder outside.

The use of thermoelectric cooling sheets can transfer the heat of the cooler to the extruder, which can effectively save energy.

The beneficial effects of the present invention are:

The air-cooled cooler of the thermoplastic pipe extruder of the present invention air-cools the plastic pipe extruded by the extruder by arranging an outer cooling pipe and an inner cooling pipe, which reduces the sealing requirements of the cooler and does not use water cooling to avoid Various problems caused by water leakage can be eliminated; at the same time, the temperature of each section of the external cooling pipe can be flexibly controlled by adjusting the temperature control of the temperature control fan, which can effectively reduce the internal stress caused by the excessive cooling speed and improve the product's durability. quality.

Description of drawings

Fig. 1 is a cross-sectional view of an air-cooled cooler of a thermoplastic pipe extruder according to the present invention.

detailed description

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the air-cooled cooler of the thermoplastic pipe extruder of the present invention includes an outer cooling pipe 1, an inner cooling pipe 5 and a thermoelectric cooling sheet (not shown in the figure), and the inlet pipe of the outer cooling pipe 1 end is fixedly connected with the outer extrusion block of the extrusion end of the extruder 8, the inlet end of the inner cooling pipe 5 is fixedly connected with the inner extrusion block of the extrusion end of the extruder 8, and the outer cooling pipe 1 is provided with a plurality of External air cooling holes 2, a plurality of external air cooling holes 2 form a plurality of ring-shaped external air cooling hole groups parallel to each other, and an air cooling ring 3 is arranged on the outside of the plurality of external air cooling hole groups, and the air cooling ring 3 passes through the air duct 4. It is connected with the air outlet of the temperature control fan. The inner cooling pipe 5 is provided with a plurality of inner air cooling holes 6. The inner extrusion block of the extruder 8 is provided with an air duct 9. The air outlet of the air duct 9 is connected with the inner cooling The air inlet of the pipe 5 is connected, the air inlet of the air duct 9 is connected with the air outlet of the constant temperature fan, and a plurality of air cooling rings 3 are respectively connected with the air outlets of a plurality of temperature control fans, and the plurality of temperature control fans are cooled from the outside of the pipe 1. The temperature from the inlet to the outlet of the outer cooling pipe 1 decreases sequentially, the cooling end of the thermoelectric cooling sheet is arranged outside the outer cooling pipe 1, and the heat release end of the thermoelectric cooling sheet is arranged outside the extrusion cavity of the extruder 8.

The operating principle of the air-cooled cooler of the thermoplastic pipe extruder of the present invention is as follows:

When it is necessary to cool the extruded plastic pipe, adjust the temperature of each temperature-controlled fan, so that the temperature of the inlet port of the outer cooling pipe 1 and the temperature of the outlet port of the outer cooling pipe 1 are sequentially reduced, so that the outer cooling pipe 1 The outer wall of the plastic pipe is cooled by air, and the gradual cooling type slow cooling can reduce the internal stress of the plastic product and avoid cracks and other phenomena during use; at the same time, the constant temperature fan supplies cooling air to the inner cooling pipe 5 to make it The inner wall of the plastic pipe is air-cooled to cool down, avoiding the use of water cooling and reducing the sealing requirements of the cooler. At the same time, because of the use of two cooling pipes inside and outside, the internal and external air pressure of the plastic pipe can be equalized to prevent it from being cooled due to the internal and external air pressure. Once there is a collapse or bulge; the thermoelectric cooling sheet transfers the heat of the cooler to the extruder 8, which can effectively save energy.

The technical solution of the present invention is not limited to the limitations of the above-mentioned specific embodiments, and any technical deformation made according to the technical solution of the present invention falls within the protection scope of the present invention.

Claims (3)

1. the air cooled chiller of a thermoplastic pipes extruder, it is characterized in that: comprise outer cooling tube and interior cooling tube, the inlet pipe end of described outer cooling tube is fixedly connected with the outer block of extruding of the extruding end of described extruder, the inlet pipe end of described interior cooling tube with extrude block in the extruding end of described extruder and be fixedly connected with, described outer cooling tube is provided with multiple external air cooling system hole, the multiple ring-type external air cooling system hole group be parallel to each other of multiple described external air cooling system hole composition, air-cooled ring is provided with outside the group of multiple described external air cooling system holes, described air-cooled ring is connected by the air outlet of airduct with temperature control blower fan, described interior cooling tube is provided with multiple interior air-cooled hole, extrude in block in described extruder and be provided with air channel, the air outlet in described air channel is connected with the air inlet of described interior cooling tube, the air inlet in described air channel is connected with the air outlet of constant temperature blower fan.

2. the air cooled chiller of thermoplastic pipes extruder according to claim 1, it is characterized in that: described temperature control blower fan is multiple, and air-cooled ring described in each connects from the air outlet of different described temperature control blower fans respectively, the temperature of multiple described temperature control blower fan from the inlet pipe mouth of described outer cooling tube to the outlet spout of described outer cooling tube reduces successively.

3. the air cooled chiller of thermoplastic pipes extruder according to claim 1, it is characterized in that: also comprise thermoelectric module, the refrigeration end of described thermoelectric module is arranged on the outside of described outer cooling tube, and the release end of heat of described thermoelectric module is arranged on outside the extruding cavity of described extruder.