CN111055394A

CN111055394A - Sealing rubber mixing device

Info

Publication number: CN111055394A
Application number: CN201911363860.0A
Authority: CN
Inventors: 宋元飞
Original assignee: Haimen Jinma Rubber Plastic Machinery Technology Co Ltd
Current assignee: Haimen Jinma Rubber Plastic Machinery Technology Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-04-24

Abstract

The invention relates to a sealing rubber mixing device, which comprises a mixer and a feeding assembly arranged at the upper part of the mixer; the mixer is internally hollow to form a batching chamber, the front end of the batching chamber is opened to form an outlet, and the outlet is provided with a detachable sealing piece; the part of the batching chamber close to the mixer is a feeding area, and the part of the batching chamber close to the outlet is a pipeline area; the lower part of the pipeline area is provided with a medicament inlet; the batching room is equipped with the stirring subassembly, the stirring subassembly includes toper axis and stirring page or leaf. The beneficial effects are that: a movable blind flange for temporarily sealing the outlet of the ingredient compartment thereby forcing the material to recirculate between the conduit region and the feed region in the ingredient compartment, the compartment thereby also serving as a mixing chamber; an inlet in the region of the conduit, which inlet is capable of introducing a diluent during mixing of the raw sealing rubber material.

Description

Sealing rubber mixing device

Technical Field

The invention belongs to the technical field of rubber processing and identification, and particularly relates to a mixing extruder for a tire sealant material.

Background

The mixing of the rubber mixture can be carried out in various equipment including Banbury type mixers, extruders and the like.

Tire sealant materials are rubber compounds that include various components, including a large amount of a relatively low viscosity diluent, such as oil or a low molecular weight polymer. In prior art conical mixers, complete mixing of the diluent with the remaining ingredients is difficult, resulting in incomplete mixing with large amounts of un-incorporated diluent.

Disclosure of Invention

In order to solve the problems, the invention adopts the following scheme:

a sealing rubber mixing device comprises a mixer and a feeding assembly arranged at the upper part of the mixer; the mixer is hollow inside to form a batching chamber,

an opening at the front end of the batching chamber forms an outlet, and the outlet is provided with a detachable sealing piece;

the part of the batching chamber close to the mixer is a feeding area, and the part of the batching chamber close to the outlet is a pipeline area;

the lower part of the pipeline area is provided with a medicament inlet;

the batching room is equipped with the stirring subassembly, the stirring subassembly includes toper axis and stirring page or leaf.

In one form, the tapered bottom bracket axle increases in outer diameter from the head end to the tail end.

In one mode, the cross section of the conical middle shaft is a diamond shape.

In one mode, the stirring blade is spiral, and the outer diameter of the spiral increases gradually from the head end to the tail end of the stirring blade.

In one mode, a rotating shaft is arranged at the tail end of the conical middle shaft, and one end of the rotating shaft is connected to the driving assembly.

In one mode, two stirring assemblies are arranged in the batching chamber, and the rotating directions of the two stirring assemblies are opposite.

In one mode, the inner diameter of the batching chamber increases from the head end to the tail end, and the tail ends of the two stirring assemblies respectively incline upwards or downwards.

In one form, the seal member is connected to the rotatable member by a connecting member to connect to the mixer.

One way, the rotating connector can be opened and closed from the hole to the seal.

The invention has the beneficial effects that:

1. a movable blind flange for temporarily sealing the outlet of the ingredient compartment thereby forcing the material to recirculate between the conduit region and the feed region in the ingredient compartment, the compartment thereby also serving as a mixing chamber;

2. an inlet in the region of the duct, which inlet is capable of introducing a diluent during mixing of the joint strip raw material.

Drawings

FIG. 1 is a side view of the inventive mixer;

FIG. 2 is a schematic view of the stirring assembly of the present invention;

fig. 3 is a diagram of a usage state of the present invention.

In the figure:

10 mixer, 12 stirring assembly, 121 conical central shaft, 122 stirring blade, 123 rotating shaft, 14 outlet, 16 ingredient chamber, 18 sealing element, 20 feeding assembly, 24 feeding area, 26 pipeline area, 30 driving assembly, 32 medicament inlet.

Detailed Description

The invention is further illustrated with reference to the accompanying drawings:

as shown in fig. 1, a sealing rubber mixing apparatus includes a mixer 10 and a feeding assembly 20 disposed at an upper portion of the mixer 10; the mixer 10 is hollow internally to form an ingredient compartment 16,

the front end of the batching chamber 16 is opened to form an outlet 14, and the outlet 14 is provided with a detachable sealing member 18;

the part of the ingredient compartment 16 near the mixer 10 is a feeding zone 24, and the part of the ingredient compartment 16 near the outlet 14 is a piping zone 26;

the lower part of the pipeline area 26 is provided with a medicament inlet 32;

the batching chamber 16 is provided with a stirring assembly 12, and the stirring assembly 12 comprises a conical middle shaft 121 and a stirring blade 122.

The outer diameter of the conical middle shaft 121 gradually increases from the head end to the tail end.

The section of the conical middle shaft 121 is a diamond shape.

The stirring blade 122 is spiral, and the outer diameter of the spiral from the head end to the tail end of the stirring blade 122 is gradually increased.

As shown in fig. 2, the tapered middle shaft 121 is provided with a rotating shaft 123 at the rear end, and one end of the rotating shaft 123 is connected to the driving assembly 30.

The batching chamber 16 is provided with two stirring assemblies 12, and the rotation directions of the two stirring assemblies 12 are opposite.

The inner diameter of the batching chamber 16 increases from the head end to the tail end, and the tail ends of the two stirring assemblies 12 incline upwards or downwards respectively.

The mixing blades of the two mixing assemblies 12 are engaged with each other.

The seal 18 is connected to the rotor by a connection to the mixer 10.

With reference to fig. 3, the rotary connection can be opened and closed from the hole to the seal 18.

As shown in FIG. 1, the mixer 10 includes two intermeshing agitator assemblies 12 located in a batching chamber 16.

The stirring assembly 12 converges towards the outlet 14 of the ingredient compartment 16.

The stirring assembly 12 is rotated in a reverse rotation mode by a motor (not shown).

With reference to fig. 3, a seal 18 (shown in an open position) is used to close the outlet 14 and allow mixing of added material (e.g., bead filler ingredients) in the ingredient compartment 16.

The ingredient compartment 16 opens through the inlet opening 22 towards the inlet box 20.

The ingredient compartment 16 includes a feed zone 24 adjacent the feed box 20 and a conduit zone 26 adjacent the outlet 14.

The circular stirring assembly 12 tapers in a direction from the feed zone 24 toward the conduit zone 24.

The agitating assembly 12 has a higher pitch and a higher channel depth in the feed zone 24 and a lower pitch and a lower channel depth in the conduit zone 26, i.e., the pitch and channel depth of the screw gradually decrease from the feed zone 26 toward the conduit zone 26.

The drive assembly 30 rotates the stirring assembly 12 via an engagement mechanism (not shown).

As shown, with the mixer outlet closed, as shown in FIG. 2, material introduced through the feed box 20 is forced to recirculate within the ingredient compartment 16 during the counter-rotation and intermeshing of the blending assembly 12.

During operation, the seal 18 is closed, as shown in fig. 1. The material to be mixed into the rubber mixture is loaded through the feed bin 20 and fed into the batching chamber 16. The reverse rotation of the stirring assembly 12 pushes the material to be mixed toward the closed outlet 14 and the sealing member 18. The seal 18 forces material to recirculate from the pipe region 26 toward the feed region 24. This achieves an increased pressure gradient between the feed region 24 at low pressure and the pipe region 26 near the blind flange at high pressure. The recirculation of material between the variable pressure zones allows for the mixing of the compounds.

The medicament inlet 32 is located in the conduit region 26. The inlet 26 allows relatively low viscosity diluent (e.g., oil or liquid polymer) to be introduced into the conduit region 26 during rotation of the stirring assembly 12 and mixing of the materials. The inlet port 32 may be formed by a tube, pipe or other conduit mounted on the mixer 10 so that external diluent flowing through the port 32 may be in fluid communication with the conduit region 26. The inlet 32 is constructed to withstand the applied pressure of the diluent using manufacturing techniques known in the art.

Introducing diluent into high pressure piping section 26 through inlet 26 requires pressurizing the diluent. The diluent pressure must be higher than the pressure of the material being mixed in the conduit region 26 or the material will flow into the port 26. The diluent is pressurized using a pressurizing device (not shown) external to the mixer 10.

The medicament inlet 32 is provided with a closure door (not shown) operable to allow injection of diluent during a portion of the mixing cycle. The diluent is pressurized before the gate (not shown) is not opened, and must be maintained in a pressurized state until the gate is closed when the diluent injection is completed.

After mixing, a valve (not shown) in seal 18 is opened and the rotating circular stirring assembly 12 pushes the mixture through the valve (not shown).

The sealant composition may include any of a variety of sealant compositions known in the art. In one embodiment, the sealant composition may include a variety of components including at least one of an elastomer, a thermoplastic elastomer, an ionomer, polybutene as a diluent, an oil as a diluent, and a tackifying resin. The sealant may further contain a curing agent and a filler as required.

In one embodiment, the sealant includes an elastomer and a liquid polymer or oil diluent, and a suitable curing agent. In particular, this type of sealant includes butyl rubber, polybutene and quinoid curing agents.

After the sealant components are mixed in the mixer 10 and any desired reaction and curing is performed, the sealant composition is applied to the innerliner of the cured tire.

It is to be understood, however, that the invention is not limited to the particular embodiments shown above, which represent only non-limiting examples of the scope of the invention, but that various modifications may be made, all within the ability of the skilled person. It will be appreciated by those skilled in the art that the present invention may be practiced without departing from the scope of the invention.

Claims

1. A sealing rubber mixing device comprises a mixer (10) and a feeding assembly (20) arranged at the upper part of the mixer (10); the method is characterized in that: the mixer (10) is hollow inside to form a batching chamber (16),

the front end of the batching chamber (16) is opened to form an outlet (14), and the outlet (14) is provided with a detachable sealing piece (18);

the part of the batching chamber (16) close to the mixer (10) is a feeding area (24), and the part of the batching chamber (16) close to the outlet (14) is a pipeline area (26);

a medicament inlet (32) is formed in the lower part of the pipeline area (26);

the batching chamber (16) is provided with a stirring component (12), and the stirring component (12) comprises a conical middle shaft (121) and a stirring blade (122).

2. A sealing rubber mixing apparatus according to claim 1, wherein: the outer diameter of the conical middle shaft (121) gradually increases from the head end to the tail end.

3. A sealing rubber mixing apparatus according to claim 1, wherein: the section of the conical middle shaft (121) is rhombic.

4. A sealing rubber mixing apparatus according to claim 1, wherein: the stirring page (122) is spiral, and the outer diameter of the spiral from the head end to the tail end of the stirring page (122) is gradually increased.

5. A sealing rubber mixing apparatus according to claim 1, wherein: the tail end of the conical middle shaft (121) is provided with a rotating shaft (123), and one end of the rotating shaft (123) is connected to the driving assembly (30).

6. A sealing rubber mixing apparatus according to claim 1, wherein: two stirring assemblies (12) are arranged in the batching chamber (16), and the rotating directions of the two stirring assemblies (12) are opposite.

7. A sealing rubber mixing apparatus according to claim 6, wherein: the inner diameter of the batching chamber (16) increases from the head end to the tail end, and the tail ends of the two stirring assemblies (12) incline upwards or downwards respectively.

8. A sealing rubber mixing apparatus according to claim 6, wherein: the stirring blades of the two stirring assemblies (12) are meshed with each other.

9. A sealing rubber mixing apparatus according to claim 1, wherein: the sealing element (18) is connected to the rotating element by a connecting element to the mixer (10).

10. A sealing rubber mixing apparatus according to claim 9, wherein: the rotary connecting piece can be opened and closed from the hole to the sealing piece (18).