CN209851550U

CN209851550U - Improved cooling loop of extruder barrel

Info

Publication number: CN209851550U
Application number: CN201920028118.3U
Authority: CN
Inventors: 罗章印
Original assignee: Nanjing Ruiya Extrusion Machinery Manufacturing Co Ltd
Current assignee: Nanjing Ruiya Extrusion Machinery Manufacturing Co Ltd
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2019-12-27
Anticipated expiration: 2029-01-08

Abstract

The utility model discloses an improved generation cooling circuit of extruder barrel, including the barrel, be equipped with both ends open-ended cavity in the barrel, just the barrel both ends are equipped with the flange link, be located in the barrel the cavity periphery is equipped with the cooling runner, the cooling runner includes two branch runners, every branch runner is along the reciprocal runner of axle, and every branch runner is through establishing in the turning department intercommunication groove intercommunication in the flange board link. The utility model discloses it is good to the cooling effect of barrel, and can realize the high accuracy control to the barrel temperature.

Description

Improved cooling loop of extruder barrel

Technical Field

The utility model relates to a double screw extruder field specifically is an improved generation cooling circuit of extruder barrel.

Background

The double-screw extruder is mainly applied to the molding processing of extruded products, and a machine barrel is an important part of the extruder and is matched with a screw to form a most core part, namely a processing section, of the extruder; all the materials are heated, sheared, mixed and extruded in the processing section to form qualified materials. The cooling of the barrel is important for controlling the temperature of the material, especially for materials which are very sensitive to temperature or have large reaction heat, and good cooling helps the temperature control system to accurately control the temperature of the barrel.

As shown in fig. 1, a cooling circuit of an existing cylinder is provided, a through cavity for placing a screw is arranged in the cylinder, a cooling flow channel is arranged at the periphery of the cavity in the cylinder, a water inlet pipe and a water outlet pipe are respectively arranged at two ends of the cooling flow channel, the cooling circuit of the existing cylinder is unidirectional, that is, the cooling flow channel only comprises a branch flow channel, cooling water flows in and out of the branch flow channel, and circulates in the cylinder for 5 times in a reciprocating manner, and the circulation frequency is small. Although the traditional structure has mature process on processing and manufacturing, the requirement of a high-precision temperature control (+/-1 ℃) production process is not suitable for special occasions.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem lie in overcoming the defect that prior art exists, provide an improved generation cooling circuit of extruder barrel. The improved cooling loop of the extruder cylinder has a good cooling effect on the cylinder, can realize high-precision control on the temperature of the cylinder, and is suitable for the requirements of a high-precision temperature control production process.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an improved generation cooling circuit of extruder barrel, includes the barrel, be equipped with both ends open-ended cavity in the barrel, just the barrel both ends are equipped with the flange link, be located in the barrel the cavity periphery is equipped with the cooling runner, the cooling runner includes two branch runners, every branch runner is along the reciprocal runner of axle, and every branch runner is through establishing in the corner the intercommunication groove intercommunication in the flange board link.

Preferably, the same end of the two cooling flow channels is communicated with a water inlet pipe, and the other end of the two cooling flow channels is communicated with a water outlet pipe.

Preferably, the flange connection end is provided with a plurality of bolt holes for bolt connection.

Compared with the prior art, the utility model discloses a change the quantity of branch runner to make branch runner along the reciprocal flow of axial in the barrel, improve the number of times of circulating from 5 times to 10 times, showing and having increased the number of times of circulating, this improved generation cooling circuit can effectively reduce the great defect of cooling water thermal inertia in practical application, can realize the accurate cooling, and actual test accuse temperature precision can reach 1 ℃, reaches high accuracy temperature control's production technology requirement.

Drawings

FIG. 1 is a schematic flow diagram of a cooling circuit of a conventional extruder barrel;

fig. 2 is a schematic flow diagram of a cooling circuit of an extruder barrel according to an embodiment of the present invention;

fig. 3 is an axial cross-sectional view of an extruder barrel according to an embodiment of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a sectional view taken along line B-B of fig. 3.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

As shown in fig. 2-5, the utility model provides a technical solution: an improved cooling loop of a machine barrel of an extruder comprises the machine barrel 23, a through cavity 24 used for placing a screw is arranged in the machine barrel 23, flange connecting ends 27 are arranged at two ends of the machine barrel 23, a communicating groove 28 is formed in the flange connecting ends 27, a cooling flow channel is arranged on the periphery of the cavity 24 in the machine barrel 23 and comprises two branch flow channels, each branch flow channel is an axially reciprocating flow channel, one branch flow channel is sequentially communicated with flow pipes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11, the other branch flow channel is sequentially communicated with flow pipes 12, 13, 14, 15, 16, 17, 18, 19, 20, 21 and 22, and the upper flow pipes are all axially arranged.

Flow tubes 1, 2, 12, 13 in fig. 4; flow tubes 3, 4, 5, 6; flow tubes 7, 8, 9, 10; flow tubes 11, 12; flow tubes 12, 13; flow tubes 14, 15, 16, 17; the flow tubes 18, 19, 20, and 21 are respectively penetrated by the communication grooves 28.

Flow tubes 1, 2, 3, 4 in fig. 5; flow tubes 5, 6, 7, 8; flow tubes 9, 10, 11; flow tubes 12, 13, 14, 15; flow tubes 16, 17, 18, 19; the flow tubes 20, 21, and 22 are respectively penetrated by the communication grooves 28.

It should be noted that the flange connection end 27 is provided with a plurality of bolt holes for bolt connection.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An improved cooling circuit of a machine barrel of an extruder, which comprises a machine barrel (23), wherein a cavity (24) with two open ends is arranged in the machine barrel (23), and flange connecting ends (27) are arranged at two ends of the machine barrel (23), and the improved cooling circuit is characterized in that: and a cooling flow channel is arranged on the periphery of the cavity (24) in the machine barrel (23), the cooling flow channel comprises two branch flow channels, each branch flow channel is an axial reciprocating flow channel, and each branch flow channel is communicated at a corner through a communication groove (28) arranged in the flange connecting end (27).

2. The improved cooling circuit of extruder barrel of claim 1, wherein: the same end of the two cooling flow channels is communicated with a water inlet pipe (25), and the other end of the two cooling flow channels is communicated with a water outlet pipe (26).

3. The improved cooling circuit of extruder barrel of claim 1, wherein: the flange connecting end (27) is provided with a plurality of bolt holes for bolt connection.