CN216520324U - Polyurethane insulation pipe structure for drying machine - Google Patents

Abstract

The utility model discloses a polyurethane insulation pipe structure for a dryer, relating to the field of plastic particle drying equipment, and the technical scheme is as follows: including the heat preservation outer tube, set up the heat preservation inner tube in the heat preservation outer tube and fill the polyurethane insulation material between heat preservation outer tube and heat preservation inner tube, be provided with on the heat preservation outer tube rather than sealing connection's annular end cover and annular end cover down, the periphery wall at heat preservation inner tube both ends respectively with the internal perisporium sealing connection of last annular end cover and annular end cover down, the heat preservation inner tube, the heat preservation outer tube, be formed with inclosed cylinder chamber between last annular end cover and the annular end cover down, it is provided with the filling hole with cylinder chamber intercommunication to go up on the annular end cover, it can be with filling hole confined seal assembly still to be provided with on the annular end cover, be provided with the check valve that is used for with the evacuation of cylinder chamber on the seal assembly. The utility model has the advantages of simple structure and strong heat preservation capability.

Description

Polyurethane insulation pipe structure for drying machine

Technical Field

The utility model relates to the field of plastic particle drying equipment, in particular to a polyurethane heat-insulating pipe structure for a dryer.

Background

The plastic products commonly seen in daily life are mostly produced by extruding or injection molding plastic particles, and the plastic particles used as raw materials are consumed more and faster, so that more plastic particles are usually purchased at one time and stored in a factory for later use. However, plastic granules are exposed to moisture after long storage, especially polyamides, ABS, PC, etc., and must be dried to remove moisture before use.

Use the desiccator to carry out the drying to plastic granules usually among the prior art, the desiccator need let in hot-blastly through the blast pipe when using, and current blast pipe is single-layer structure usually, does not possess the heat preservation ability, and hot-blastly can cause very big loss when carrying like this.

In order to solve the problems, the Chinese patent with the publication number of CN108626522A discloses a polyurethane heat-insulating tube built-in support, which comprises a heat-insulating outer tube, a heat-insulating inner tube, a rubber support and a filling material, wherein the rubber support is arranged in the outer tube, the edge end face of the rubber support is contacted with the inner surface of the outer tube, the heat-insulating inner tube is also arranged in the heat-insulating outer tube, the heat-insulating inner tube is sleeved on the inner surface of the rubber support and is tightly connected with the inner surface layer of the rubber support, the filling material can fill a gap between the heat-insulating outer tube and the heat-insulating inner tube, the rubber support is uniformly provided with 6 identical circular holes in the circumferential direction, the inner tube and the outer tube are effectively supported, the inner tube and the outer tube are always positioned at the same axial line position, the support is not inclined when the solid heat-insulating material is filled, and the phenomenon of uneven filling of the heat-insulating material is caused, and the support is made of the rubber material, can not scratch the tube body.

Although the mode realizes the heat preservation of the blast pipe, a larger opening which is contacted with the outside air exists between the rubber support and the heat preservation outer pipe and between the rubber support and the heat preservation inner pipe, so that the outside moisture and air can easily enter the heat preservation material, and the heat preservation capability of the heat preservation pipe is not strong.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a polyurethane heat-insulating pipe structure for a dryer, which has the advantages of simple structure and strong heat-insulating capability.

The technical purpose of the utility model is realized by the following technical scheme: the utility model provides a polyurethane insulation tube structure for desiccator, includes the heat preservation outer tube, sets up the heat preservation inner tube in the heat preservation outer tube and fills the polyurethane insulation material between heat preservation outer tube and heat preservation inner tube, be provided with on the heat preservation outer tube rather than sealing connection's annular end cover and annular end cover down, the periphery wall at heat preservation inner tube both ends respectively with the internal perisporium sealing connection of last annular end cover and annular end cover down, be formed with inclosed cylinder chamber between heat preservation inner tube, heat preservation outer tube, the last annular end cover of going up and the annular end cover down, it is provided with the filling hole with cylinder chamber intercommunication to go up on the annular end cover, go up and still be provided with on the annular end cover and can be with filling hole confined seal assembly, the last check valve that is used for with the evacuation of cylinder chamber that is provided with of seal assembly.

In one embodiment, the injection holes are arranged in a circle, and the injection holes are arranged in a plurality along a circumferential annular array of the upper annular end cover.

In one embodiment, the sealing assembly comprises an end cover matched with the injection hole, one side of the end cover is hinged to an upper annular end cover positioned on one side of the injection hole through a hinge seat, the other side of the upper annular end cover positioned on the injection hole is provided with a reverse buckle, and the other side of the end cover is provided with a snap lock matched with the reverse buckle.

In one embodiment, a sealing rubber ring is arranged on the end cover.

In one embodiment, the inner tube is made of stainless steel.

In conclusion, the utility model has the following beneficial effects: set up to the cylindricality chamber through the cavity with between heat preservation outer tube and the heat preservation inner tube, during the use, pour into the cylindricality chamber with the polyurethane insulation material of fluid form into by the filling hole, be full of whole cylindricality chamber through the foaming solidification, compare with the traditional mode, the contact of polyurethane insulation material and heat preservation outer tube and heat preservation inner tube is inseparabler, the thermal insulation performance of insulating tube has been improved, cover the seal assembly simultaneously and close just can be airtight with the cylindricality chamber on the filling hole, reuse evacuation equipment takes out the air in the cylindricality chamber to the greatest extent and just can make polyurethane insulation material be in airtight and dry environment, be difficult to absorb the moisture in the air, also be difficult to be by the oxidation, the life and the thermal insulation performance of insulating tube have further been improved.

Drawings

FIG. 1 is a schematic structural diagram of a polyurethane insulation pipe structure for a dryer according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a lower annular end cap in a polyurethane insulation pipe structure for a dryer according to an embodiment of the present application;

FIG. 3 is an enlarged view of portion A of FIG. 1;

fig. 4 is a cross-sectional view of a polyurethane insulation pipe structure for a dryer according to an embodiment of the present application.

In the figure: 1. a heat-insulating outer pipe; 11. an upper annular end cap; 111. an injection hole; 12. a lower annular end cap; 2. a seal assembly; 21. an end cap; 22. reversing; 23. a hinged seat; 24. a hasp lock; 3. a one-way valve; 4. a heat preservation inner pipe; 5. polyurethane thermal insulation material.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 4, an embodiment of the present application provides a polyurethane insulation pipe structure for a dryer, including an insulation outer pipe 1, an insulation inner pipe 4 disposed inside the insulation outer pipe 1, and a polyurethane insulation material 5 filled between the insulation outer pipe 1 and the insulation inner pipe 4. The heat-insulating outer pipe 1 is provided with an upper annular end cover 11 and a lower annular end cover 12 which are connected with the heat-insulating outer pipe in a sealing mode, and the peripheral walls at two ends of the heat-insulating inner pipe 4 are connected with the inner peripheral walls of the upper annular end cover 11 and the lower annular end cover 12 in a sealing mode respectively. The warm outer pipe, the heat preservation inner pipe 4, the upper annular end cover 11 and the lower annular end cover 12 can be connected in a sealing mode in a welding mode. And a closed cylindrical cavity is formed among the heat-insulation inner pipe 4, the heat-insulation outer pipe 1, the upper annular end cover 11 and the lower annular end cover 12. The upper annular end cover 11 is provided with an injection hole 111 communicated with the cylindrical cavity, the upper annular end cover 11 is further provided with a sealing assembly 2 capable of sealing the injection hole 111, and the sealing assembly 2 is provided with a one-way valve 3 for vacuumizing the cylindrical cavity.

Set up to the cylindricality chamber through the cavity with between heat preservation outer tube 1 and the heat preservation inner tube 4, in use, pour into the cylindricality chamber with the polyurethane insulation material 5 of fluid form by injection hole 111, be full of whole cylindricality chamber through the foaming solidification, compare with the traditional mode, polyurethane insulation material 5 is inseparabler with the contact of heat preservation outer tube 1 and heat preservation inner tube 4, the thermal insulation performance of insulating tube has been improved, cover seal assembly 2 simultaneously and close just can be airtight with the cylindricality chamber on injection hole 111, reuse evacuation equipment takes out the air in the cylindricality chamber to the greatest extent just can make polyurethane insulation material 5 be in airtight and dry environment, be difficult to absorb the moisture in the air, also difficult oxidation, the life and the thermal insulation performance of insulating tube have further been improved.

On the basis of the above, the injection holes 111 are arranged in a circular shape, and the injection holes 111 are arranged in a plurality along the circumferential annular array of the upper annular end cover 11.

Through setting up the filling hole 111 into a plurality of, during the use, can be by a plurality of filling holes 111 with polyurethane insulation material 5 injection cylindricality intracavity for polyurethane insulation material 5's flow is more even, thereby causes its whole cylindricality chamber of filling up that can be even.

On the basis, the sealing assembly 2 comprises an end cover 21 matched with the injection hole, one side of the end cover 21 is hinged to an upper annular end cover 11 positioned on one side of the injection hole 111 through a hinge seat 23, an inverted buckle 22 is arranged on the other side of the upper annular end cover 11 positioned on the injection hole 111, and a snap lock 24 matched with the inverted buckle 22 is arranged on the other side of the end cover 21.

Through the setting of end cover 21, can supply the injection of polyurethane insulation material 5 on the one hand, on the other hand, when breaking down in the insulating tube follow-up use, can open end cover 21 again and overhaul, make locking and opening of end cover 21 convenient and fast more through the setting of hasp lock 24 and back-off 22 simultaneously.

On the basis, the end cover 21 is provided with the sealing rubber ring, and the sealing performance between the end cover 21 and the inner side wall of the injection hole 111 is enhanced through the arrangement of the sealing rubber ring.

On the basis, the inner pipe is made of stainless steel, the stainless steel is corrosion-resistant, the hardness is high, the inner pipe is not easy to damage, and the service life of the inner pipe is longer.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims (5)

1. The utility model provides a polyurethane insulation tube structure for desiccator, includes heat preservation outer tube (1), sets up heat preservation inner tube (4) in heat preservation outer tube (1) and fills polyurethane insulation material (5) between heat preservation outer tube (1) and heat preservation inner tube (4), its characterized in that: be provided with on heat preservation outer tube (1) rather than sealing connection's last annular end cover (11) and lower annular end cover (12), the periphery wall at heat preservation inner tube (4) both ends respectively with the internal perisporium sealing connection of last annular end cover (11) and lower annular end cover (12), be formed with inclosed cylinder chamber between heat preservation inner tube (4), heat preservation outer tube (1), last annular end cover (11) and the lower annular end cover (12), it is provided with filling hole (111) with the cylinder chamber intercommunication to go up annular end cover (11), it can be with filling hole (111) confined seal assembly (2) still to be provided with on last annular end cover (11), be provided with on seal assembly (2) and be used for cylindrical chamber evacuation's check valve (3).

2. The polyurethane insulation pipe structure for the dryer according to claim 1, wherein: the injection holes (111) are arranged in a circle, and the injection holes (111) are arranged in a plurality along the circumferential annular array of the upper annular end cover (11).

3. The polyurethane insulation pipe structure for the dryer according to claim 1, wherein: seal assembly (2) include with end cover (21) of filling opening adaptation, one side of end cover (21) articulates on last annular end cover (11) that are located filling hole (111) one side through articulated seat (23), the opposite side that is located filling hole (111) on going up annular end cover (11) is provided with back-off (22), the opposite side of end cover (21) is provided with hasp lock (24) with back-off (22) adaptation.

4. The polyurethane insulation pipe structure for the dryer according to claim 1, wherein: and a sealing rubber ring is arranged on the end cover (21).

5. The polyurethane insulation pipe structure for the dryer according to claim 1, wherein: the inner tube is stainless steel.

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