Raw materials stoving mechanism is used in powder coating processing
Technical Field
The utility model relates to a powder coating processing technology field specifically is a powder coating processing is with raw materials stoving mechanism.
Background
The powder coating is in a completely different form from general coating, and it exists in a state of fine powder. Since no solvent is used, it is called a powder coating. The powder coating is mainly characterized in that: has the characteristics of harmlessness, high efficiency, resource saving and environmental protection.
It has two main categories: thermoplastic powder coatings and thermosetting powder coatings.
The thermoplastic powder coating is composed of thermoplastic resin, pigment, filler, plasticizer and stabilizer. The thermoplastic powder coating comprises: polyethylene, polypropylene, polyester, polyvinyl chloride, chlorinated polyether, polyamide, cellulose, polyester, and the like.
The thermosetting powder paint consists of thermosetting resin, curing agent, pigment, stuffing, assistant, etc. The thermosetting powder coating comprises: epoxy resins, epoxy-polyester resins, polyurethane resins, acrylic resins, and the like.
The production process and the production equipment of the powder coating are different from those of common solvent-based coatings, the production process of the powder coating generally comprises a plurality of links such as premixing, feeding, melt extrusion, cooling tabletting and graded crushing, drying treatment is required to be carried out after premixing of raw materials in order to ensure the drying of the materials, the subsequent extrusion processing quality is improved, the drying in the prior art is generally carried out through hot air, the internal materials are only stirred to avoid accumulation, the contact area of the hot air and the materials is small, and the drying efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a raw materials stoving mechanism is used in powder coating processing that drying efficiency is high to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a powder coating processing is with raw materials stoving mechanism, including the section of thick bamboo of drying, the whole annular that is of section of thick bamboo of drying, the both sides of a section of thick bamboo of drying link firmly a main shaft respectively, these two coaxial settings of main shaft, the main shaft passes through the bearing and installs in the frame, the main shaft is the hollow shaft, the center is equipped with the cavity that runs through the main shaft, the left side of a section of thick bamboo of drying is equipped with the air inlet with the inside cavity intercommunication of left side main shaft, the right side of a section of thick bamboo of drying is equipped with the gas outlet with the inside cavity intercommunication of right side main shaft, the left end of left main shaft.
All be equipped with the filter screen on air inlet and the gas outlet, avoid inside material to follow the air current and discharge.
A driven belt wheel is fixedly installed on the main shaft on the left side of the drying cylinder, and the driven belt wheel is connected with a driving belt wheel on an output shaft of a speed reducing motor through a belt. Gear motor drives driving pulley, driving pulley passes through belt drive and drives driven pulley and main shaft rotation, it rotates to drive the mount pad, and then drive the drying cylinder around the main shaft low-speed rotation, the rotation in-process can constantly be followed the horizontality and switched to vertical state, the material flows to the latter half of drying cylinder when rotating to vertical state, the material flows to the first half of drying cylinder again when switching to vertical state, cooperation material gravity makes inside material constantly roll the dispersion, thereby improve and hot-blast area of contact, and the heat exchange efficiency is improved.
The top of the drying cylinder is provided with a feeding hole, and the bottom of the drying cylinder is provided with a discharging hole.
As a further aspect of the present invention: the filter screen is the toper, and fixed mounting is on the inner wall of a stoving section of thick bamboo. Because inside air current and material flow direction all are along drying cylinder ring to the ring, conical filter screen is tangent with the filter screen surface when air current and material pass through the filter screen, even the material is attached to and also can be blown away by follow-up air current on the filter screen, avoids the filter screen to block up.
As a further aspect of the present invention: and valves are arranged on the feed inlet and the discharge outlet.
As a further aspect of the present invention: and valves are arranged on the hot air supply pipe and the exhaust pipe.
As a further aspect of the present invention: the left spindle is connected with a rotor part of the first rotary joint, and the hot air supply pipe is connected with a stator part of the first rotary joint.
As a further aspect of the present invention: the right main shaft is connected with a rotor part of the second rotary joint, and the exhaust pipe is connected with a stator part of the second rotary joint.
As a further aspect of the present invention: and a plurality of vertical blades which are arranged in a staggered manner are arranged on the inner wall of the drying cylinder. The material and the air flow can be baffled between the vertical blades, the stroke is prolonged, and the heat exchange and drying efficiency is improved.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model dries the internal materials through hot air while driving the internal materials to roll and flow, and has long stroke, large contact area between the hot air and the materials and high drying efficiency;
the dried materials can flow in the drying cylinder along with hot air, so that the problem of incomplete material accumulation and drying is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention in the first embodiment.
Fig. 2 is a schematic structural view of a drying cylinder according to the first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the present invention in the second embodiment.
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.
Example one
Referring to fig. 1-2, a raw material drying mechanism for powder coating processing includes a drying cylinder 1, the drying cylinder 1 is annular, two sides of the drying cylinder 1 are fixedly connected with a main shaft 2 respectively, the two main shafts 2 are coaxially arranged, the main shaft 2 is mounted on a frame 3 through a bearing, the main shaft 2 is a hollow shaft, a cavity penetrating through the main shaft 2 is arranged in the center, an air inlet 4 communicated with the cavity inside the main shaft 2 on the left side is arranged on the left side of the drying cylinder 1, an air outlet 5 communicated with the cavity inside the main shaft 2 on the right side is arranged on the right side of the drying cylinder 1, the left end of the main shaft 2 on the left side is connected with a hot air supply pipe through a first rotary joint 6, and the right end of the main shaft 2.
All be equipped with filter screen 8 on air inlet 4 and the gas outlet 5, avoid inside material to follow the air current and discharge.
A driven belt wheel is fixedly arranged on a main shaft 2 on the left side of the drying cylinder 1 and is connected with a driving belt wheel on an output shaft of a speed reducing motor through a belt. Gear motor drives driving pulley, driving pulley passes through belt drive and drives driven pulley and 2 rotations of main shaft, it rotates to drive the mount pad, and then drive drying cylinder 1 and rotate around 2 low-speed of main shaft, the rotation in-process can constantly be switched to vertical state from the horizontality, the material flows to the latter half of drying cylinder 1 when rotating to vertical state, the material flows to the first half of drying cylinder 1 again when switching to vertical state, cooperation material gravity makes inside material constantly roll the dispersion, thereby improve and hot-blast area of contact, and the heat exchange efficiency is improved.
The top of the drying cylinder 1 is provided with a feeding hole 9, and the bottom is provided with a discharging hole 10.
Above-mentioned, filter screen 8 is the toper, and fixed mounting is on the inner wall of drying cylinder 1. Because inside air current and material flow direction all are along drying cylinder 1 hoop, conical filter screen 8 is tangent with filter screen 8 surface when air current and material pass through filter screen 8, even the material is attached to and also can be blown away by follow-up air current on filter screen 8, avoids filter screen 8 to block up.
Above-mentioned, all be equipped with the valve on feed inlet 9 and the discharge gate 10.
Above-mentioned, all be equipped with the valve on hot-blast air supply pipe and the exhaust pipe.
The left spindle 2 is connected to a rotor portion of the first rotary joint 6, and the hot air supply pipe is connected to a stator portion of the first rotary joint 6.
The right spindle 2 is connected to the rotor of the second rotary joint 7, and the exhaust duct is connected to the stator of the second rotary joint 7.
The utility model discloses a structural feature and theory of operation: at first through feed inlet 9 to adding damp material (accessible feed pump feed) in drying cylinder 1, then open gear motor, gear motor passes through belt drive and drives drying cylinder 1 and rotate, it flows to drive inside material and roll, then supply with hot-blast through hot-blast supply line this moment, dry to inside material in hot-blast entering drying cylinder 1, and later follow the air current with the moisture and discharge from the air outlet, along with going on of drying, the material after the stoving still can follow hot-blast and flow in drying cylinder 1, avoid the material to pile up the incomplete problem of drying, dry for a period of time after the material and dry completely, gear motor is closed this moment, and stop the air feed, discharge material through discharge gate 10.
Still further, in order to facilitate discharging, the speed reduction motor can be stopped after drying is completed, but air supply is not stopped, then the valve on the exhaust pipe is closed, so that the materials are discharged from the discharge port 10 along with hot air, and the materials can be separated through the filter screen 8 or the bag filter after being discharged.
Example two
Referring to fig. 3, a plurality of vertical blades 21 are disposed on the inner wall of the drying cylinder 1 in a staggered manner. The material and the air flow can be baffled between the vertical blades 21, the stroke is prolonged, and the heat exchange drying efficiency is improved.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.