CN211709990U

CN211709990U - Sealing structure of extruder barrel

Info

Publication number: CN211709990U
Application number: CN201922275925.8U
Authority: CN
Inventors: 范宗元
Original assignee: Nanjing Meiya Rubber & Plastic Machinery Manufacturing Co ltd
Current assignee: Nanjing Meiya Rubber & Plastic Machinery Manufacturing Co ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-10-20
Anticipated expiration: 2029-12-18

Abstract

The utility model discloses an extruder barrel sealing structure, including barrel and the barrel rear cover of setting in the barrel rear side, the barrel is a pipe, fixed welding has the preceding position ring flange on the body outer wall of its rear end, six round holes have evenly been seted up on the preceding position ring flange, the barrel rear cover is a lid structure, the edge of its lid front surface has seted up the back position ring flange, fixed welding has the limiting plate on the inboard bottom surface of barrel rear cover, form a mounting groove structure between limiting plate and the lid, and be provided with rubber seal ring in its cell body, the bottom surface of barrel rear cover is equipped with a through-hole; through set up cooling water circulation groove in the lateral wall of lid behind the barrel to set up the lateral wall of lid behind the laminating barrel of rubber seal ring, thereby through the cooling effect of cooling water, make near the further reduction of temperature of rubber seal ring, avoid high temperature to make rubber seal ring's accelerated ageing, thereby improve rubber seal ring's life.

Description

Sealing structure of extruder barrel

Technical Field

The utility model particularly relates to an extruder barrel seal structure.

Background

The extruder belongs to one of plastic manufacturing machines, and can divide a machine head into a right-angle machine head, an oblique-angle machine head and the like according to the material flow direction of the machine head and the included angle of the central line of a screw rod, the screw extruder can fully plasticize and uniformly mix materials by means of pressure and shearing force generated by rotation of the screw rod, and the plastic extruder can be basically classified into a double-screw extruder, a single-screw extruder, a rare multi-screw extruder and a non-screw extruder through the molding of a neck ring.

But traditional extruder is when using, because the rubber seal ring of its sealed department is in under the high temperature environment for a long time, thereby make its ageing speed accelerate, the time just can lead to the extruder barrel to seal not tight for a long time, thereby cause the reduction of the inside pressure of barrel, influence the discharging efficiency of barrel, can cause the raw materials to leak even when serious, the inhomogeneous scheduling problem of raw materials density of extruding, thereby influence product quality, and the change of rubber seal ring is very troublesome again, not only need dismantle the device, but also need wash the drying to the defective material of sealing washer position department, thereby can delay the mass production time of assembly line, therefore the utility model aims to provide an extruder barrel seal structure, with the problem of proposition in solving above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, provide an extruder barrel seal structure to reach the purpose that improves barrel seal structure life.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an extruder barrel seal structure, is including barrel and the lid behind the barrel of setting at the barrel rear side, the barrel is a pipe, and fixed welding has preceding position ring flange on the body outer wall of its rear end, six round holes have evenly been seted up on the preceding position ring flange, the lid is a lid structure behind the barrel, and the edge of its lid front surface has seted up back position ring flange, fixed welding has the limiting plate on the inboard bottom surface of lid behind the barrel, form a mounting groove structure between limiting plate and the lid, and be provided with rubber seal ring in its cell body, the bottom surface of lid is equipped with a through-hole behind the barrel.

Preferably, the outer diameter of the rear flange plate is equal to that of the front flange plate in size, mounting holes matched with the round holes in the front flange plate in position are formed in the rear flange plate, the number and the size of the mounting holes are equal, and the rear flange plate and the front flange plate are fixed through hexagon bolts and hexagon nuts.

Preferably, the limiting plate is an annular plate, a cavity is reserved in a plate body of the limiting plate, and a heat insulation plate is filled in the cavity.

Preferably, a mechanical seal is installed in a through hole in the bottom surface of the rear cover of the machine barrel, and a rotating shaft is fixedly installed in an inner ring of the mechanical seal.

Preferably, a cooling water circulation groove is formed in the side wall of the rear cover of the machine barrel, the groove body is of an annular structure, a water inlet is formed in the upper end of the groove body, a water outlet is formed in the lower end of the groove body, and the water inlet and the water outlet are respectively connected with a water outlet pipe and a water inlet pipe in a water circulation system.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the limiting plate is fixedly welded on the bottom surface of the inner side of the rear cover of the machine barrel, the rubber sealing washer is arranged in a cavity formed by the limiting plate and the side wall of the rear cover of the machine barrel, the limiting plate is arranged into a hollow cavity structure, and the cavity is filled with the heat insulation plate, so that a certain insulation effect is achieved on heat inside the machine barrel;

2. and through set up cooling water circulation groove in the lateral wall of lid behind the barrel to the lateral wall of lid sets up behind the laminating barrel with rubber seal ring, thereby through the cooling effect of cooling water, makes near the further reduction of temperature of rubber seal ring, avoids high temperature to make rubber seal ring's accelerated ageing, thereby improves rubber seal ring's life.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the rear cover structure of the cylinder of the present invention;

FIG. 3 is a front view of the rear cover of the barrel of the present invention;

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

FIG. 5 is a side view of the rear cover of the barrel of the present invention;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 5;

fig. 7 is an enlarged view of the structure at C in fig. 6.

In the figure: the machine comprises a machine barrel 1, a machine barrel rear cover 2, a front flange 3, a rear flange 4, a mounting hole 5, a limiting plate 6, a rubber sealing washer 7, a mechanical seal 8, a cooling water circulation groove 9, a water inlet 10, a water outlet 11, a heat insulation plate 12, a hexagon bolt 13, a hexagon nut 14 and a rotating shaft 15.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an extruder barrel seal structure, lid 2 behind the barrel of 1 rear side of barrel including barrel 1 and setting, barrel 1 is a pipe, fixed welding has preceding position ring flange 3 on the body outer wall of its rear end, six round holes have evenly been seted up on preceding position ring flange 3, lid 2 is a lid structure behind the barrel, back position ring flange 4 has been seted up to the edge of its lid front surface, fixed welding has limiting plate 6 on the inboard bottom surface of lid 2 behind the barrel, form a mounting groove structure between limiting plate 6 and the lid, and be provided with rubber seal ring 7 in its cell body, the bottom surface of lid 2 is equipped with a through-hole behind the barrel.

Furthermore, the outer diameter of the rear flange plate 4 is equal to the outer diameter of the front flange plate 3 in size, mounting holes 5 matched with the round holes in the front flange plate 3 in position are formed in the rear flange plate, the number and the size of the mounting holes are equal, the rear flange plate and the front flange plate are fixed through the hexagon bolts 13 and the hexagon nuts 14, the mounting holes, the water inlets 10 and the water outlets 11 are arranged in a staggered mode, and inconvenience in mounting of the hexagon bolts 13 and the hexagon nuts 14 is avoided;

furthermore, the limiting plate 6 is an annular plate, a cavity is reserved in the plate body of the annular plate, a heat insulation plate 12 is filled in the cavity, the limiting plate 6 is fixedly welded on the bottom surface of the inner side of the rear cover 2 of the machine barrel, the rubber sealing washer 7 is arranged in a cavity formed by the limiting plate 6 and the side wall of the rear cover 5 of the machine barrel, the limiting plate 6 is arranged into a hollow cavity structure, and the heat insulation plate 12 is filled in the cavity, so that a certain insulation effect is achieved on heat inside the machine barrel 1;

furthermore, a mechanical seal 8 is arranged in a through hole on the bottom surface of the rear cover 2 of the machine barrel, and a rotating shaft 15 is fixedly arranged in an inner ring of the mechanical seal 8, so that the sealing property of the joint of the rotating shaft 15 and the rear cover 2 of the machine barrel is improved;

furthermore, a cooling water circulation groove 9 is formed in the side wall of the machine barrel rear cover 2, the groove body is of an annular structure, a water inlet 10 is formed in the upper end of the groove body, a water outlet 11 is formed in the lower end of the groove body, the water inlet 10 and the water outlet 11 are respectively connected with a water inlet pipe and a water outlet pipe in a circulating water system, and the cooling water circulation groove 9 is formed in the side wall of the machine barrel rear cover 1, so that heat near the rubber sealing washer 7 can be absorbed completely through the cooling effect of cooling water, the accelerated aging of the rubber sealing washer is avoided due to high temperature, and the service life of the rubber sealing washer is prolonged;

the working principle is as follows: during the in-service use, fixed welding has limiting plate 6 on the inboard bottom surface of lid 1 behind the barrel, set up rubber seal ring 7 in the cavity that 2 lateral walls of lid formed behind limiting plate 6 and the barrel, and set the limiting plate to hollow cavity structures, and pack heat insulating board 12 in the cavity, thereby play certain isolated effect to the heat of 1 inside of barrel through it, and through set up cooling water circulation groove 9 in the lateral wall of lid 1 behind the barrel, the further reduction of temperature near rubber seal ring is flowed to the water through cooling water circulating device, avoid high temperature to make rubber seal ring's accelerated ageing, thereby improve rubber seal ring's life, reduce the assembly line and lead to the holistic shutdown of assembly line because of changing sealing device.

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. The utility model provides an extruder barrel seal structure, includes barrel (1) and sets up lid (2) behind barrel (1) rear side, its characterized in that: barrel (1) is a pipe, and fixed welding has preceding position ring flange (3) on the body outer wall of its rear end, six round holes have evenly been seted up on preceding position ring flange (3), lid (2) are a lid structure behind the barrel, and back position ring flange (4) have been seted up to the edge of its lid front surface, fixed welding has limiting plate (6) on the inboard bottom surface of lid (2) behind the barrel, form a mounting groove structure between limiting plate (6) and the lid, and be provided with rubber seal ring (7) in its cell body, the bottom surface of lid (2) is equipped with a through-hole behind the barrel.

2. A barrel seal structure of an extruder as defined in claim 1, wherein: the outer diameter of the rear flange plate (4) is equal to that of the front flange plate (3), mounting holes (5) matched with the positions of the round holes in the front flange plate (3) are formed in the rear flange plate, the number and the size of the mounting holes are identical, and the rear flange plate and the front flange plate are fixed through hexagon bolts (13) and hexagon nuts (14).

3. A barrel seal structure of an extruder as defined in claim 1, wherein: the limiting plate (6) is an annular plate, a cavity is reserved in the plate body of the limiting plate, and a heat insulation plate (12) is filled in the cavity.

4. A barrel seal structure of an extruder as defined in claim 1, wherein: and a mechanical seal (8) is arranged in a through hole on the bottom surface of the machine barrel rear cover (2), and a rotating shaft (15) is fixedly arranged in an inner ring of the mechanical seal (8).

5. A barrel seal structure of an extruder as defined in claim 1, wherein: the side wall of the machine barrel rear cover (2) is provided with a cooling water circulation groove (9), the groove body is of an annular structure, the upper end of the groove body is provided with a water inlet (10), the lower end of the groove body is provided with a water outlet (11), and the water inlet (10) and the water outlet (11) are respectively connected with a water inlet pipe through a water outlet pipe in a water circulation system.