CN214635992U - Cleaning type silicone rubber powder premixing device - Google Patents

Abstract

The utility model discloses a cleaning type silicone rubber powder premixing device, which comprises a powder longitudinal stirring device, wherein a powder feeding metering device is arranged at a top end feeding port of the powder longitudinal stirring device, a bottom end feeding port of the powder longitudinal stirring device is correspondingly connected with a powder transverse premixing device, the powder longitudinal stirring device and the powder transverse premixing device are hermetically connected through a corrugated hose, and the powder transverse premixing device is obliquely arranged along the material discharging direction; the top ends of the powder longitudinal stirring device and the powder feeding metering device are respectively provided with a dust collecting opening, and each dust collecting opening is connected to a powder cleaning and dust collecting device; the utility model is provided with the transverse powder premixing device for improving the stirring and mixing effect of the powder, so as to avoid the situation that the powder cannot reach a better mixing effect due to a larger mixing difficulty after directly entering the kneading mechanism, and effectively improve the working efficiency of the kneading mechanism; meanwhile, the powder cleaning base device is additionally arranged, so that the dust loss can be reduced, and the working environment is improved.

Description

Cleaning type silicone rubber powder premixing device

Technical Field

The utility model belongs to the technical field of the silicone adhesive prepares, especially, relate to a clean type silicone rubber powder material premixing device.

Background

Silicone gel is a paste-like product of silicone materials that cure to a tough, rubbery solid material upon exposure to atmospheric moisture. The silicone adhesive has the characteristics of strong bonding force, high tensile strength, weather resistance, shock resistance, moisture resistance, odor resistance and large adaptability to cold and heat changes, has wide adaptability, and can realize the bonding of most building material products, so the application value is very high. Can be used as a sealant, an adhesive, a potting agent and the like, and is widely applied to the fields of buildings, machinery, automobiles and electronics.

At present, the method for producing the silicone adhesive in China mainly comprises the steps of adding powder materials into a stirring kettle respectively according to a certain sequence, carrying out preliminary mixing in the stirring kettle, then entering a kneading machine or a powerful dispersing machine for further mixing, reacting, vacuumizing and degassing to produce a barrel of adhesive, and packaging the barrel of adhesive into a product through split charging equipment. Stirred tank is as powder premixing device, mainly play the stirring effect, the powder still mainly is powdery material when stirred tank is interior, get into to the kneading machine after the powder, because the kneading machine has stronger effect of mediating, consequently can become to glue fast behind the powdery material entering back kneading machine and form the paste, the kneading nature between the paste material this moment is better, but the mixing degree of difficulty between the material can corresponding increase, in order to guarantee better mixed effect, need intermittent type to operate repeatedly, just can guarantee that silicone adhesive can reach better quality, it is lower to have efficiency, the energy consumption shortcoming such as higher. In addition, during the charging and stirring processes of the powdery materials, serious dust is easily generated, and the dust can cause environmental pollution and harm to the bodies of workers.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a clean type silicone rubber powder premixing device that can effectively improve powder stirring and mix effect and reducible dust loss is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: the cleaning type silicone rubber powder premixing device comprises a longitudinal powder stirring device, wherein a powder feeding metering device is arranged at a feeding port at the top end of the longitudinal powder stirring device, a feeding port at the bottom end of the longitudinal powder stirring device is correspondingly connected with a transverse powder premixing device, the longitudinal powder stirring device and the transverse powder premixing device are hermetically connected through a corrugated hose, and the transverse powder premixing device is arranged in a downward inclination manner along the material discharging direction; the top ends of the powder longitudinal stirring device and the powder feeding metering device are respectively provided with a dust collecting opening, and each dust collecting opening is connected to a powder cleaning and dust collecting device; the transverse powder premixing device comprises a transversely arranged powder premixing barrel, the powder premixing barrel is fixedly arranged on a premixing support, a powder premixing rotating shaft is rotatably arranged in the powder premixing barrel, a powder premixing motor with a power end connected with the powder premixing rotating shaft is arranged outside the powder premixing barrel, a forward spiral mixing blade is arranged on the powder premixing rotating shaft, a powder turning flat plate is further arranged on the powder premixing rotating shaft, a premixing feeding hole with an upward opening is formed in the head of the powder premixing barrel, and a premixing discharging hole with a downward opening is formed in the tail of the powder premixing barrel; and the powder premixing cylinder is also provided with at least one desulfurization gas port connected with a desulfurization device.

According to the preferable technical scheme, the powder material turning flat plate is obliquely arranged on the powder material premixing rotating shaft, the outer end of the powder material turning flat plate extends to the inner wall of the powder material premixing barrel body, the powder material turning flat plate is arranged between two adjacent forward spiral material mixing blades, and the powder material turning flat plate is obliquely arranged and the oblique direction of the powder material turning flat plate faces one side of the rotating direction of the powder material premixing rotating shaft.

According to the preferable technical scheme, the pitch of the forward spiral mixing blade is gradually increased from the premixing material inlet and then keeps unchanged, the forward spiral mixing blade extends to the premixing material outlet, and a reverse spiral anti-blocking blade with the reverse rotation direction opposite to that of the forward spiral mixing blade is arranged at the tail part of the powder premixing cylinder on the powder premixing rotating shaft.

According to a preferable technical scheme, the powder feeding and metering device comprises a powder feeding bin located above the powder longitudinal stirring device, the bottom end of the powder feeding bin is fixedly provided with the powder metering device, the powder metering device is fixedly arranged on the feeding support, a powder outlet of the powder feeding bin is connected with a top end feeding port of the powder longitudinal stirring device, and a feeding valve is connected between the powder outlet and the top end feeding port through a flange.

As the preferred technical scheme, the vertical powder stirring device comprises a powder stirring kettle body, the powder stirring kettle body is fixed on a kettle body support, a powder stirring motor is installed outside the top end of the powder stirring kettle body, the output end of the powder stirring motor is connected with a powder stirring shaft, the lower portion of the powder stirring shaft extends into the powder stirring kettle body and is connected with powder stirring blades, and a powder stirring plate is further installed on the inner wall of the powder stirring kettle body.

As the preferred technical scheme, the powder cleaning and dust collecting device comprises a bag type dust collector, a draught fan is correspondingly arranged on the bag type dust collector, and the vertical powder stirring device and a dust collecting opening on the powder discharging and grain collecting device are respectively connected with the bag type dust collector through dust collecting pipelines.

By adopting the technical scheme, the clean silicone adhesive powder premixing device comprises a longitudinal powder stirring device, a powder feeding metering device is arranged at a feeding port at the top end of the longitudinal powder stirring device, a feeding port at the bottom end of the longitudinal powder stirring device is correspondingly connected with a transverse powder premixing device, the longitudinal powder stirring device and the transverse powder premixing device are hermetically connected through a corrugated hose, and the transverse powder premixing device is arranged in a downward inclination manner along the material discharging direction; the top ends of the powder longitudinal stirring device and the powder feeding metering device are respectively provided with a dust collecting opening, and each dust collecting opening is connected to a powder cleaning and dust collecting device; the transverse powder premixing device comprises a transversely arranged powder premixing barrel, the powder premixing barrel is fixedly arranged on a premixing support, a powder premixing rotating shaft is rotatably arranged in the powder premixing barrel, a powder premixing motor with a power end connected with the powder premixing rotating shaft is arranged outside the powder premixing barrel, a forward spiral mixing blade is arranged on the powder premixing rotating shaft, a powder turning flat plate is further arranged on the powder premixing rotating shaft, a premixing feeding hole with an upward opening is formed in the head of the powder premixing barrel, and a premixing discharging hole with a downward opening is formed in the tail of the powder premixing barrel; the powder premixing cylinder is also provided with at least one desulfurization gas port connected with a desulfurization device; the utility model has the advantages that: when in use, powder is firstly added into the powder feeding and metering device, and the powder feeding and metering device has a metering function, so an operator can more conveniently control the weight of the powder which is put into the powder longitudinal stirring device each time, namely, the raw materials are respectively put into the powder longitudinal stirring device in a certain proportion and sequence, the powder can still be added into the powder longitudinal stirring device while the powder longitudinal stirring device is stirring, no extrusion exists among the powder, so that the reaction among the powder is difficult to occur, the shape of the material is maintained as a powdery material, and after the powder is stirred for a certain time in the powder longitudinal stirring device, the powder enters the powder transverse premixing device for further stirring, however, the powder transverse premixing device adopts a transverse inclined arrangement mode, when materials are stirred and mixed in the transverse powder premixing device, the stirring function can be realized, meanwhile, due to the fact that the flowability of the materials moving by means of gravity is poor, the materials are kept in the transverse powder premixing device for a long time, the powders can be extruded mutually, preliminary reaction can be generated among the powders in the extruding process, the powders are mixed and reacted through the transverse powder premixing device and then enter the kneading mechanism for further kneading reaction, vacuum desulfurization and the like, the transverse powder premixing device is additionally arranged in the prior art, the transverse powder premixing device serves as an intermediate transition device, not only has a certain mixing function, but also has an extruding function, so that the preliminary reaction among the powders can be realized, the stirring and mixing effects of the powders can be effectively improved, and the problem that the better mixing effect cannot be achieved due to the fact that the mixing difficulty is large after the powders directly enter the kneading mechanism can be avoided, the working efficiency of the kneading mechanism can be effectively improved;

in addition, when powder is added into the powder feeding and metering device or the powder is stirred in the powder longitudinal stirring device, part of the powder splashes to form dust, negative pressure is generated by the powder cleaning and dust collecting device, the dust is collected into the powder cleaning and dust collecting device in a centralized manner, the environment pollution caused by the dust can be avoided, and the physical injury to workers is reduced.

Drawings

The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the installation of a powder stirring plate according to an embodiment of the present invention;

in the figure: 1-longitudinal powder stirring device; 11-powder stirring kettle body; 12-powder stirring motor; 13-powder stirring shaft; 14-powder stirring paddle; 15-powder stirring plate; 16-kettle control valve; 2-powder material supply metering device; 21-powder feeding bin; 22-powder metering device; 23-a feed valve; 3-horizontal premixing device for powder; 31-powder premixing cylinder; 32-powder premixing rotating shaft; 33-powder premixing motor; 34-a forward spiral mixing blade; 35-powder material turning flat plate; 36-a premix feed port; 37-a pre-mixing discharge port; 38-desulfurization gas port; 39-reverse spiral anti-blocking blade; 4-powder cleaning dust collecting device; 41-bag type dust collector; 42-a dust collecting duct; 5-corrugated hose.

Detailed Description

The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

As shown in figure 1, the cleaning type silicone rubber powder premixing device comprises a mounting bracket, wherein the mounting bracket is used as a mounting base of the device, and components in the device are directly or indirectly mounted on the mounting bracket; the device comprises a vertical powder stirring device 1, a powder feeding metering device 2 is arranged at a feeding port at the top end of the vertical powder stirring device 1, a horizontal powder premixing device 3 is correspondingly connected to a feeding port at the bottom end of the vertical powder stirring device 1, the vertical powder stirring device 1 and the horizontal powder premixing device 3 are hermetically connected through a corrugated hose 5, partial vibration exists between the vertical powder stirring device 1 and the horizontal powder premixing device 3 in the material stirring process, and when the vibration frequencies are inconsistent, if a steel pipe or rigid connection is adopted, the sealing stability of connection between the vertical powder stirring device 1 and the horizontal powder premixing device 3 is influenced, so that the device is connected through the corrugated hose 5, the vibration is buffered through a soft connection mode, and the sealing connection stability is ensured; the powder transverse premixing device 3 is arranged in a downward inclination mode along the material discharging direction; the top ends of the powder longitudinal stirring device 1 and the powder feeding metering device 2 are respectively provided with a dust collecting opening, and each dust collecting opening is connected to a powder cleaning and dust collecting device 4; when in use, powder is firstly added into the powder feeding and metering device 2, because the powder feeding and metering device 2 has a metering function, an operator can more conveniently control the weight of the powder which is put into the powder longitudinal stirring device 1 each time, namely, all raw materials are respectively put into the powder longitudinal stirring device 1 according to a certain proportion and sequence in order, the powder can still be added into the powder longitudinal stirring device 1 while the powder longitudinal stirring device 1 is stirring, because the main function of the powder longitudinal stirring device 1 is stirring, no extrusion exists among the powder, the reaction among the powder is difficult to occur, the shape of the material is still maintained as a powder material, after the powder is stirred for a certain time in the powder longitudinal stirring device 1, the powder enters the powder transverse premixing device 3 for further stirring, however, because the powder transverse premixing device 3 adopts a transverse inclined arrangement mode, when materials are stirred and mixed in the transverse powder premixing device 3, the stirring function can be realized, meanwhile, due to the fact that the flowability of the materials moving by means of gravity is poor, the materials are kept in the transverse powder premixing device 3 for a long time, the powders can be mutually extruded, preliminary reaction can be generated among the powders in the extrusion process, the powders are mixed and reacted through the transverse powder premixing device 3 and then enter the kneading mechanism for further kneading reaction, vacuum desulfurization and the like, the transverse powder premixing device 3 is additionally arranged in the prior art, the transverse powder premixing device 3 serves as an intermediate transition device, not only has a certain mixing effect, but also has an extrusion effect, so that the preliminary reaction among the powders can be effectively improved, and meanwhile, the problem that the better mixing effect cannot be achieved due to the fact that the mixing difficulty is large after the powders directly enter the kneading mechanism is avoided, the working efficiency of the kneading mechanism can be effectively improved; in addition, the top ends of the powder longitudinal stirring device 1 and the powder feeding metering device 2 are sealed by adopting a sealing cover or a sealing cover, then dust collecting ports are respectively arranged on the sealing cover or the sealing cover, each dust collecting port is connected to the powder cleaning and dust collecting device 4, when powder is added into the powder feeding metering device 2 or the powder is stirred in the powder longitudinal stirring device 1, part of the powder splashes to form dust, and the powder cleaning and dust collecting device 4 generates negative pressure to collect the dust into the powder cleaning and dust collecting device 4 in a centralized manner, so that the pollution of the environment caused by the dust can be avoided, and the physical injury to workers can be reduced.

In this embodiment, one or more transverse powder premixing devices 3 may be provided, and of course, a plurality of transverse powder premixing devices 3 may be provided and sequentially connected in series from top to bottom to achieve continuous multi-stage stirring, and each transverse powder premixing device 3 is arranged in a downward inclination manner along the material discharging direction, and the inclination angle is 1-5 °. If the horizontal premixing device of powder 3 does not adopt the mode that the slope set up, the ejection of compact of powder only can rely on the lateral extrusion ejection of compact so, and the ejection of compact degree of difficulty is great, and in this embodiment, will horizontal premixing device of powder 3 sets up along material ejection of compact direction downward sloping, can improve the mobility of the ejection of compact with the help of gravity action, because inclination is less simultaneously, can effectively avoid appearing the phenomenon of quick ejection of compact again, can make the powder be in fully stir, preliminary reaction in the horizontal premixing device of powder 3.

The powder transverse premixing device 3 comprises a powder premixing cylinder 31 which is transversely arranged, the powder premixing cylinder 31 is fixedly arranged on a premixing bracket, the premixing support is arranged on the mounting support, the powder premixing cylinder 31 is internally and rotatably provided with a powder premixing rotating shaft 32, a powder premixing motor 33 with a power end connected with the powder premixing rotating shaft 32 is arranged outside the powder premixing cylinder 31, the powder premixing rotating shaft 32 is provided with a forward spiral mixing blade 34, the powder premixing rotating shaft 32 is also provided with a powder turning flat plate 35, the head part of the powder premixing cylinder 31 is provided with a premixing feeding port 36 with an upward opening, the premixing feeding port 36 is connected with the corrugated hose 5, the tail part of the powder premixing barrel body 31 is provided with a premixing discharge port 37 with a downward opening, and the premixing discharge port 37 is connected with a kneading mechanism; the powder premixing cylinder 31 is further provided with at least one desulfurization gas port 38 connected with a desulfurization device. When the powder stirring device is used, the powder premixing motor 33 drives the powder premixing rotating shaft 32 to rotate, so that the forward spiral mixing blade 34 and the powder stirring flat plate 35 rotate to stir powder. The forward spiral mixing blade 34 is mainly used for realizing the conveying effect, and powder can be stirred when the forward spiral mixing blade 34 rotates; the powder turning plate 35 mainly serves to turn powder, so that the flowability of the powder is further improved, and the effect of uniform mixing is achieved. The forward spiral mixing blade 34 is matched with the powder stirring flat plate 35, so that the transverse movement of the materials is realized, and the stirring effect is also achieved. The powder can produce heat and gas when reacting in the horizontal premixing device of powder 3, in order to guarantee the normal use of the horizontal premixing device of powder 3, consequently set up desulfurization gas port 38, can be through the gas discharge that desulfurization gas port 38 will produce, guide to the atmosphere of discharging again after desulfurization treatment of desulphurization unit department, on the one hand does not influence the normal use of this device, and on the other hand can not cause the influence to the environment.

Referring to fig. 2, the powder turning flat plate 35 is obliquely installed on the powder premixing rotating shaft 32, the outer end of the powder turning flat plate extends to the inner wall of the powder premixing cylinder 31, the powder turning flat plate 35 is arranged between two adjacent forward spiral mixing blades 34 and used for compensating the turning effect of an optical axis between the two adjacent forward spiral mixing blades 34, and the powder turning flat plate 35 is obliquely installed and the oblique direction of the powder turning flat plate faces one side of the rotating direction of the powder premixing rotating shaft 32, so that the powder turning flat plate 35 can contact more powder when rotating along with the powder premixing rotating shaft 32, and rapid and efficient stirring is achieved.

The pitch of the forward spiral mixing blade 34 is gradually increased from the premixing inlet 36 and then constantly extends to the premixing outlet 37, the pitch near the premixing inlet 36 is smaller, the powder is mainly conveyed backwards by the forward spiral mixing blade, the forced feeding effect is mainly achieved, the stirring effect of the powder is slightly poor, the powder has a certain extrusion effect after being forcibly fed, and when the powder continues to move backwards, the pitch is gradually increased and constantly remains, so that the installation of the powder turning flat plate 35 is facilitated, and the stirring effect of the powder is improved.

In order to avoid powder accumulation at the tail of the powder premixing cylinder 31, a reverse spiral anti-blocking blade 39 with a direction opposite to the rotation direction of the forward spiral mixing blade 34 is arranged at the tail of the powder premixing cylinder 31 on the powder premixing rotating shaft 32, the rotation direction of the reverse spiral anti-blocking blade 39 is opposite to the rotation direction of the forward spiral mixing blade 34, the movement direction of the powder is opposite, the powder of the forward spiral mixing blade 34 moves in the forward direction, the powder of the reverse spiral anti-blocking blade 39 moves in the reverse direction, and the powder can move to the premixing discharge port 37 and cannot accumulate at the tail.

The powder feeding and metering device 2 comprises a powder feeding bin 21 located above the vertical powder stirring device 1, a powder metering device 22 is fixedly mounted at the bottom end of the powder feeding bin 21, the powder metering device 22 is fixedly mounted on a feeding support, the feeding support is mounted on a mounting support, a powder outlet of the powder feeding bin 21 is connected with a top end feeding port of the vertical powder stirring device 1, and a feeding valve 23 is connected between the powder outlet and the top end feeding port through a flange. The powder metering device 22 is a load cell, which is a product known to those skilled in the art, and the detailed structure and operation principle thereof are not described herein. The powder metering device 22 is used for measuring the weight data of the dry powder in the powder feeding bin 21, the powder metering device 22 is arranged at the bottom end of the feeding support, when the powder feeding bin 21 is empty, the powder metering device 22 displays 0, and when the powder is added into the powder feeding bin 21, the powder metering device 22 displays a numerical value which is equal to the weight of the powder added into the powder feeding bin 21; therefore, each time when materials are added into the longitudinal powder stirring device 1, the powder feeding bin 21 is in an empty state, the feeding valve 23 is closed, then powder is added into the powder feeding bin 21 by manpower or conveying equipment, the numerical value displayed by the powder metering device 22 is observed in time, so that the amount of the powder added into the powder feeding bin 21 is controlled, after one of the powders is added, the feeding valve 23 is opened, so that all the powder in the powder feeding bin 21 enters the longitudinal powder stirring device 1, and the powder metering device 22 is reset to 0; then the feeding valve 23 is closed again, other types of powder are added into the powder feeding bin 21, and the steps are repeated to sequentially add various types of powder into the powder longitudinal stirring device 1. In this embodiment, the powder material feeding and metering device 2 is an intermediate transfer station, and has a metering function, so as to ensure that the raw materials are respectively and sequentially fed into the powder material longitudinal stirring device 1 according to a certain proportion. The dust collecting opening is arranged at the top end of the powder feeding bin 21.

In this embodiment, the powder feeding and metering device 2 is disposed above the longitudinal powder stirring device 1, so as to more conveniently supply powder into the longitudinal powder stirring device 1.

Vertical agitating unit of powder 1 includes the powder stirred tank body 11, the powder stirred tank body 11 is fixed on cauldron body support, cauldron body support mounting is in on the installing support, powder agitator motor 12 is installed outward on the top of the powder stirred tank body 11, the output of powder agitator motor 12 is connected with powder (mixing) shaft 13, the lower part of powder (mixing) shaft 13 stretches into in the powder stirred tank body 11 and be connected with powder stirring paddle leaf 14, powder stirring board 15 is still installed to the inner wall of the powder stirred tank body 11, the bottom feed opening department of vertical agitating unit of powder 1 still corresponds and is provided with cauldron body control flap 16. In the operation process of the vertical powder stirring device 1, the kettle body control valve 16 is always kept in a closed state, the powder stirring motor 12 rotates to drive the powder stirring shaft 13 and the powder stirring paddle 14 to rotate, so that powder in the powder stirring kettle body 11 is stirred, and the powder stirring paddle 14 is used as a main component for stirring the powder. The powder stirring plate 15 is used as an auxiliary device, and when powder rotates in the powder stirring kettle body 11 and contacts the powder stirring plate 15, part of the powder is damaged by the rotation, so that the powder stirring effect is achieved. The dust collecting opening is arranged at the top end of the powder stirring kettle body 11. The powder stirring blade 14 can be a propeller blade, which is a known technology of ordinary engineering in the art and is not described herein.

The powder cleaning and dust collecting device 4 comprises a bag type dust collector 41, a draught fan is correspondingly arranged on the bag type dust collector 41, and a vertical powder stirring device 1 and a dust collecting opening on a powder discharging and grain collecting device are respectively connected with the bag type dust collector 41 through a dust collecting pipeline 42. The draught fan during operation makes produce the negative pressure in the bag collector 41, all produce the negative pressure with each dust collecting opening through dust collecting pipeline 42, the raise dust can be inhaled to the bag collector 41 in through dust collecting pipeline 42 is unified under the negative pressure effect, bag collector 41 filters the dust, discharges to the atmosphere after filtering and accords with emission standard, bag collector 41 is the better filter equipment of current dust removal effect, and dust collection efficiency is high, and the technique is reliable, and because bag collector 41 structure is great, can be to a plurality of in this system the dust collecting opening gathers dust simultaneously, and not only dust removal effect is good, and still improves bag collector 41's work efficiency. The bag collector 41 and the induced draft fan are both in the prior art, and belong to the technologies known to those skilled in the art, and are not described herein again. The bag-type dust collector 41 can be a special device of the device, and can also be shared with other devices.

The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. Clean type silicone rubber powder material premixing device includes the vertical agitating unit of powder, its characterized in that: a powder feeding metering device is arranged at a feeding port at the top end of the longitudinal powder stirring device, a feeding port at the bottom end of the longitudinal powder stirring device is correspondingly connected with a transverse powder premixing device, the longitudinal powder stirring device and the transverse powder premixing device are hermetically connected through a corrugated hose, and the transverse powder premixing device is arranged in a downward inclined manner along the material discharging direction; the top ends of the powder longitudinal stirring device and the powder feeding metering device are respectively provided with a dust collecting opening, and each dust collecting opening is connected to a powder cleaning and dust collecting device; the transverse powder premixing device comprises a transversely arranged powder premixing barrel, the powder premixing barrel is fixedly arranged on a premixing support, a powder premixing rotating shaft is rotatably arranged in the powder premixing barrel, a powder premixing motor with a power end connected with the powder premixing rotating shaft is arranged outside the powder premixing barrel, a forward spiral mixing blade is arranged on the powder premixing rotating shaft, a powder turning flat plate is further arranged on the powder premixing rotating shaft, a premixing feeding hole with an upward opening is formed in the head of the powder premixing barrel, and a premixing discharging hole with a downward opening is formed in the tail of the powder premixing barrel; and the powder premixing cylinder is also provided with at least one desulfurization gas port connected with a desulfurization device.

2. The cleaning type silicone rubber powder premixing device as claimed in claim 1, wherein: the powder material turning flat plate is obliquely arranged on the powder material premixing rotating shaft, the outer end of the powder material turning flat plate extends to the inner wall of the powder material premixing barrel body, the powder material turning flat plate is arranged between every two adjacent forward spiral material mixing blades, and the powder material turning flat plate is obliquely arranged and the oblique direction of the powder material turning flat plate faces one side of the rotating direction of the powder material premixing rotating shaft.

3. The cleaning type silicone rubber powder premixing device as claimed in claim 1, wherein: the screw pitch of the forward spiral mixing blade is gradually increased from the premixing feeding port and then keeps unchanged, the forward spiral mixing blade extends to the premixing discharging port, and a reverse spiral anti-blocking blade with the reverse direction opposite to the rotation direction of the forward spiral mixing blade is arranged at the tail part of the powder premixing cylinder on the powder premixing rotating shaft.

4. The cleaning type silicone rubber powder premixing device as claimed in claim 1, wherein: the powder feeding and metering device comprises a powder feeding bin positioned above the vertical powder stirring device, the bottom end of the powder feeding bin is fixedly provided with a powder metering device, the powder metering device is fixedly arranged on a feeding support, a powder outlet of the powder feeding bin is connected with a top end feeding port of the vertical powder stirring device, and a feeding valve is connected between the powder outlet and the top end feeding port through a flange.

5. The cleaning type silicone rubber powder premixing device as claimed in claim 1, wherein: the vertical agitating unit of powder includes the powder stirred tank body, the powder stirred tank body is fixed on cauldron body support, install powder agitator motor outside the top of the powder stirred tank body, powder agitator motor's output is connected with the powder (mixing) shaft, the lower part of powder (mixing) shaft stretches into the internal powder stirring paddle that just is connected with of powder stirred tank, the powder stirring board is still installed to the inner wall of the powder stirred tank body.

6. The cleaning type silicone rubber powder premixing device as claimed in claim 1, wherein: the dust cleaning and collecting device for the powder comprises a bag type dust collector, a draught fan is correspondingly arranged on the bag type dust collector, and a vertical powder stirring device and a dust collecting opening in a powder discharging and grain collecting device are respectively connected with the bag type dust collector through dust collecting pipelines.

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