CN209848829U - Plastic powder mixing barrel - Google Patents

Abstract

The utility model relates to a mould powder mixing drum, it includes the barrel of back taper, set up the motor on the barrel, the inlet pipe is worn to be equipped with in the upper end of barrel, the discharging pipe is worn to be equipped with to the lower extreme of barrel, be provided with the center pin in the barrel, set up in the epaxial first helical blade of center, be fixed in the epaxial support of center, a plurality of along circumference set up in the oblique axle of the bottom surface of support, set up in the epaxial second helical blade of a slope, the one end of center pin is worn out to the outside of barrel, rotate and connect on the motor, first helical blade is located the low reaches of support, the one end that the oblique axle is close to the center pin is less than the one end. The utility model discloses a set up the center pin and stir and carry with first helical blade and mould the powder to assist the required stirring power of moulding powder and the spiral to of not co-altitude of the oblique axis that differs in length and second helical blade adaptation, finally improve the mixing efficiency who moulds the powder.

Description

Plastic powder mixing barrel

Technical Field

The utility model belongs to the technical field of the technique of moulding powder processing equipment and specifically relates to a mould powder mixing drum is related to.

Background

The phenolic resin is also called bakelite, also called bakelite powder. Putting the phenolic resin and other additives into a mixing cylinder for crushing and mixing; then introducing the kneaded mixture into a plasticator for plastication, and cooling to room temperature; and introducing the flaky material to be granulated into plastic powder, crushing the flaky material to be granulated by using a granulator, and screening to obtain the plastic powder. The molding powder is a thermosetting powder coating for electrostatic spraying, and is widely applied to industries of corrosion prevention engineering, adhesives, flame-retardant materials, grinding wheel manufacturing and the like.

Chinese patent No. CN201755468U discloses a five-screw conical mixer, which is composed of a motor, a projecting arm, a cylinder, two-arm screws, a middle supporting shaft, a screw surface, an auxiliary screw, a discharge valve, a feed inlet, etc. The uppermost end of the center of the machine body is provided with a motor, a vertical speed reducer is arranged at the lower part of the motor, a horizontal speed reducer is arranged at one side of the vertical speed reducer, and a feeding hole is arranged right below the horizontal speed reducer; two sides of the inner wall of the cylinder body are respectively provided with two arm screws which are symmetrically distributed relative to the middle supporting shaft; the two auxiliary screws are distributed on two sides of the plane where the middle supporting shaft and the two-arm screws are located, and the two auxiliary screws are also symmetrical; the two arm screws and the two auxiliary screws are respectively connected with the middle supporting shaft through an extending arm; the middle supporting shaft is provided with a spiral surface to form a middle spiral; the discharge valve is arranged at the lowest part of the machine body.

The above prior art solutions have the following drawbacks: the mixing machine adopts the two symmetrically arranged arm screws and the auxiliary screw to stir and mix the plastic powder in the cylinder body, so that the driving force exerted on the plastic powder in unit height is similar; because the volume of moulding the powder in the barrel in different unit heights is different, the powder atress of moulding of barrel lower part is too big, and the powder atress of moulding on barrel upper portion is not enough, consequently can cause the appearance vacuum between the moulding powder of barrel lower part, and the moulding powder on barrel upper portion mixes inadequately evenly, and the mixing efficiency of mixer is not high, remains to improve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be favorable to improving the mould whitewashed mixing drum of moulding powder mixing efficiency.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a mould powder mixing drum, includes the barrel of back taper, set up in motor on the barrel, the inlet pipe is worn to be equipped with in the upper end of barrel, the discharging pipe is worn to be equipped with to the lower extreme of barrel, be provided with the center pin in the barrel, set up in epaxial first helical blade of center pin, be fixed in epaxial support of center, a plurality of along circumference set up in the oblique axle of the bottom surface of support, set up in the epaxial second helical blade of support, the one end of center pin is worn out extremely the outside of barrel, rotate connect in on the motor, first helical blade is located the low reaches of support, the oblique axle is close to the one end of center pin is less than and keeps away from the one end of center pin, the length of oblique axle reduces along circumference gradually.

By adopting the technical scheme, the motor is used as a main driving source to drive the central shaft to rotate, the central shaft and the first spiral blade form a packing auger structure, on one hand, plastic powder input by the feeding pipe is stirred, and on the other hand, the plastic powder after stirring and mixing is pushed to the discharging pipe; meanwhile, as the volume of the molding powder in the cylinder body in the unit length along the discharging direction is gradually reduced and the force required by mixing is different, the length of the second spiral blade is changed along with the change of the length of the inclined shaft, and finally the stirring force and the spiral thrust on the molding powder along the discharging direction are gradually reduced, so that the mixing efficiency of the molding powder is finally improved.

The utility model discloses further set up to: the first helical blade is a reducing helical blade, and the radius of the first helical blade is gradually reduced along the direction far away from the support.

Through adopting above-mentioned technical scheme, through the radius that changes first helical blade to this compensaties the stirring clearance between first helical blade and the second helical blade, thereby carries out intensive mixing to moulding powder, further improves the mixed effect of moulding powder.

The utility model discloses further set up to: the second helical blade is a reducing helical blade, and the radius of the second helical blade is gradually reduced along the direction far away from the support.

Through adopting above-mentioned technical scheme, through the radius that changes second helical blade to this compensaties the stirring clearance between the inner wall of second helical blade and barrel, thereby fully stirs moulding the powder, only has the mixed effect that improves moulding the powder.

The utility model discloses further set up to: the support comprises an annular frame and a plurality of supporting rods fixed between the annular frame and the central shaft, and the inclined supporting shaft is fixed on the annular frame.

By adopting the technical scheme, the central shaft and the oblique supporting shafts are not suitable for bearing the action of axial force, the annular frame is used as a supporting framework of all the oblique supporting shafts, and the central shaft is supported by the supporting rods and is limited to maintain the suspension of the central shaft on the oblique supporting shafts.

The utility model discloses further set up to: the feeding pipe is provided with a first pneumatic valve for controlling the feeding pipe to be opened and closed; and a second pneumatic valve for controlling the discharging pipe to open and close is arranged on the discharging pipe.

Through adopting above-mentioned technical scheme, through the aperture of controlling first pneumatic valve and second pneumatic valve, can be according to the mixed condition of moulding the powder in the barrel, the moulding powder flow of control inlet pipe and discharging pipe, the operation is simple and easy swift.

To sum up, the utility model discloses a beneficial technological effect does:

1. the central shaft and the first spiral blade are arranged for stirring and conveying molding powder, and the inclined supporting shafts with different lengths and the second spiral blade are matched with stirring force and spiral thrust required by molding powder with different heights, so that the mixing efficiency of the molding powder is finally improved;

2. the annular frame and the support rod are used as framework supports, so that the axial force borne by the central shaft and the oblique shaft is reduced;

3. through setting up first pneumatic valve and second pneumatic valve, be convenient for control the moulding powder flow of inlet pipe and discharging pipe.

Drawings

Fig. 1 is a schematic structural view of the mixing drum of the present invention.

Fig. 2 is a schematic sectional structure diagram of the mixing drum of the present invention.

Fig. 3 is a schematic structural diagram of the stirring mechanism of the present invention.

In the figure, 1, a cylinder; 2. a stirring mechanism; 21. a central shaft; 22. a first helical blade; 23. a support; 231. an annular frame; 232. a strut; 24. a support oblique axis; 25. a second helical blade; 3. a motor; 4. a feed pipe; 41. a first pneumatic valve; 5. a discharge pipe; 51. a second pneumatically actuated valve.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 and 2, for the utility model discloses a mould powder mixing drum, including the barrel 1 of back taper, set up rabbling mechanism 2 in barrel 1, set up in motor 3 and the inlet pipe 4 of the upper end of barrel 1, set up in discharging pipe 5 of the lower extreme of barrel 1. The motor 3 is used for driving the stirring mechanism 2 to rotate the feeding pipe 4 and the discharging pipe 5 to be communicated with the inside of the barrel body 1. When the mixing drum works, plastic powder enters the interior of the drum body 1 through the feeding pipe 4, the motor 3 drives the stirring mechanism 2 to rotate at the moment, so that the plastic powder in the drum body 1 is uniformly mixed, and finally the mixed plastic powder is output to the exterior of the drum body 1 through the discharging pipe 5.

Referring to fig. 1, in order to control the plastic powder flow of the feeding pipe 4 and the discharging pipe 5, a first pneumatic valve 41 for controlling the opening and closing of the feeding pipe 4 is arranged on the feeding pipe 4; the discharging pipe 5 is provided with a second pneumatic valve 51 for controlling the opening and closing of the discharging pipe 5. By controlling the opening degree of the first pneumatic valve 41 and the second pneumatic valve 51, the plastic powder flow rate of the feeding pipe 4 and the discharging pipe 5 can be controlled according to the mixing condition of the plastic powder in the barrel 1.

Referring to fig. 2, the stirring mechanism 2 includes a central shaft 21 rotatably connected to the motor 3, a first helical blade 22 provided on the central shaft 21, a bracket 23 fixed to the central shaft 21, a plurality of inclined shafts 24 provided on the bottom surface of the bracket 23 in the circumferential direction, and a second helical blade 25 provided on the inclined shafts 24. The first helical blade 22 is located at the downstream of the support 23, the motor 3 is used as a main driving source to drive the central shaft 21 to rotate, the central shaft 21 and the first helical blade 22 form a packing auger structure, on one hand, plastic powder input by the feeding pipe 4 is stirred, and on the other hand, the plastic powder after stirring and mixing is pushed to the discharging pipe 5.

Referring to fig. 3, since the volume of the molding powder in the discharging direction in the cylinder 1 is gradually reduced and the force required for mixing is different, the end of the inclined shaft 24 close to the central shaft 21 is lower than the end far from the central shaft 21, and the length of the inclined shaft 24 is gradually reduced clockwise. The movement direction of the molding powder around the inclined shaft 24 is consistent with the movement direction area of the molding powder along the inner wall of the cylinder 1, at the moment, the length of the second spiral blade 25 is changed along with the change of the length of the inclined shaft 24, and finally, the stirring force and the spiral thrust force applied to the molding powder along the discharging direction are gradually reduced, so that the mixing efficiency of the molding powder is finally improved.

The first helical blade 22 is a variable diameter helical blade, and the radius of the first helical blade 22 gradually decreases along the direction away from the support 23. The second helical blade 25 is a variable diameter helical blade, and the radius of the second helical blade 25 gradually decreases along the direction away from the support 23. Through changing the radius of first helical blade 22 to this compensates the stirring clearance between first helical blade 22 and the second helical blade 25, through changing the radius of second helical blade 25, compensates the stirring clearance between the inner wall of second helical blade 25 and barrel 1 with this, thereby fully stirs moulding the powder, only has the mixed effect that improves moulding the powder.

The central shaft 21 and the oblique shaft 24 are not adapted to bear the axial force, and therefore, the bracket 23 includes an annular frame 231, a plurality of struts 232 fixed between the annular frame 231 and the central shaft 21, and the oblique shaft 24 is fixed to the annular frame 231. The ring frame 231 serves as a support framework for all the oblique shafts 24, and the central shaft 21 is supported and limited by the supporting rods 232 to maintain the suspension of the central shaft 21 on the oblique shafts 24.

The implementation principle of the embodiment is as follows:

s1, opening the first pneumatic valve 41, starting the motor 3, and enabling the molding powder to enter the barrel 1 through the feeding pipe 4;

s2, the stirring mechanism 2 rotates and promotes the plastic powder in the cylinder 1 to be uniformly mixed, and the first pneumatic valve 41 is closed;

s3 after stirring for a certain time, the second air-operated valve 51 is opened.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims (5)

1. The utility model provides a mould powder mixing drum, include the barrel (1) of back taper, set up in motor (3) on barrel (1), inlet pipe (4) are worn to be equipped with in the upper end of barrel (1), discharging pipe (5), its characterized in that are worn to be equipped with to the lower extreme of barrel (1): the improved structure of the motor is characterized in that a central shaft (21), a first spiral blade (22) arranged on the central shaft (21), a support (23) fixed on the central shaft (21), a plurality of inclined supporting shafts (24) arranged on the bottom surface of the support (23) along the circumferential direction and a second spiral blade (25) arranged on the inclined supporting shafts (24) are arranged in the barrel (1), one end of the central shaft (21) penetrates out of the barrel (1) and is rotatably connected onto the motor (3), the first spiral blade (22) is located at the downstream of the support (23), one end, close to the central shaft (21), of the inclined supporting shafts (24) is lower than one end, far away from the central shaft (21), and the length of the inclined supporting shafts (24) is gradually reduced along the circumferential direction.

2. A molding powder mixing drum according to claim 1, wherein: the first helical blade (22) is a variable-diameter helical blade, and the radius of the first helical blade (22) is gradually reduced along the direction far away from the support (23).

3. A molding powder mixing drum according to claim 1, wherein: the second helical blade (25) is a variable-diameter helical blade, and the radius of the second helical blade (25) is gradually reduced along the direction far away from the support (23).

4. A molding powder mixing drum according to claim 1, wherein: the bracket (23) comprises an annular frame (231) and a plurality of supporting rods (232) fixed between the annular frame (231) and the central shaft (21), and the inclined supporting shaft (24) is fixed on the annular frame (231).

5. A molding powder mixing drum according to claim 1, wherein: the feeding pipe (4) is provided with a first pneumatic valve (41) for controlling the feeding pipe (4) to be opened and closed; and a second pneumatic valve (51) for controlling the discharge pipe (5) to open and close is arranged on the discharge pipe (5).