CN212492609U - Epoxy adhesive agitating unit - Google Patents

Abstract

An epoxy resin adhesive stirring device comprises a conical stirring tank body, wherein an upper cover is arranged at the upper port of the conical stirring tank body, a lower cover is arranged at the lower port of the conical stirring tank body, a vacuum valve and a feed inlet are arranged on the upper cover, a sealing cover plate is arranged on the feed inlet, and an adjusting device is arranged in the middle of the upper cover; the adjusting device comprises a flange, an annular flange and a speed reducer flange, the longitudinal section of the flange is U-shaped, the flange is fixedly connected with the annular flange, the flange and the annular flange enclose a cavity, the speed reducer flange is located in the cavity, the upper portion of the speed reducer flange extends out of the cavity and is connected with the bottom of the speed reducer, the speed reducer flange is connected with the annular flange through an adjusting bolt, the adjusting bolt is in threaded connection with the speed reducer flange, and the adjusting bolt is matched with a first through hole in the annular flange.

Description

Epoxy adhesive agitating unit

Technical Field

The utility model relates to a stirring apparatus, especially to the stirring apparatus of the epoxy adhesive in the mineral foundry goods manufacturing process.

Background

The raw material epoxy resin adhesive required by the manufacture of mineral castings generally adopts a two-component formula, namely modified epoxy resin and a modified curing agent. The stirring process in the preparation process of the epoxy resin adhesive has the following requirements:

1. the speed is high: the epoxy resin curing agent can generate chemical curing reaction after being mixed, and the curing reaction process time is preset and determined according to the formula, so that the epoxy resin curing agent needs to be quickly stirred after being mixed so as to be mixed with aggregate subsequently.

2. Stirring uniformly: the uniform stirring can ensure the full curing reaction of the two components and the consistency of the material performance.

3. As little air as possible is introduced: air introduced in the stirring process can finally form air holes in the mineral casting, and the mechanical property of the material is influenced.

4. The stirring device is easy to clean: the epoxy resin adhesive is difficult to clean after being cured, and the epoxy resin adhesive can bond most materials such as metal, wood and the like, so that in the discontinuous production process, a stirring device needs to be cleaned in time and thoroughly before the epoxy resin adhesive is cured for subsequent use.

At present, the epoxy resin adhesive stirring device generally adopts a structure that a motor is connected with a primary gear reduction mechanism to drive a driving center shaft, a transverse stirring rod, a scraping plate and an upward stirring blade to rotate simultaneously so as to stir the adhesive in a box body. The hollow pipe can be filled with water to clean the interior of the stirring box body. The discharging control valve is arranged on the discharging pipe. The inner wall of the box body is wound with an electric heating rod to heat the box body as required. The existing stirring device has the following problems:

1. in order to improve the mixing speed, the rotating speed of the stirring shaft is high, the adhesive is severely turbulent in the box body, and air is easily introduced;

2. the method of high-pressure water washing is adopted to clean the residual adhesive in the box body, which causes the problem of sewage treatment.

In conclusion, the problems that air is easily introduced in the stirring process and the inner wall of the box body is extremely difficult to clean generally exist in the prior technical scheme.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide an epoxy resin adhesive stirring apparatus, which performs vacuum pumping through a vacuum pumping valve according to the epoxy resin mixing requirement, so as to form negative pressure in a stirring tank body, thereby avoiding introducing air in the epoxy resin adhesive mixing process; the special conical stirring tank body and the adjusting device are designed, and the contradiction between high-speed stirring and wall scraping cleaning is met by lifting the wall scraping plate. The device has the advantages of simple structure, high mixing efficiency, good mixing effect and easy cleaning, and can solve the problems existing in the prior art.

The utility model provides a technical scheme that its technical problem adopted is: an epoxy resin adhesive stirring device comprises a conical stirring tank body, wherein an upper cover is arranged at the upper port of the conical stirring tank body, a lower cover is arranged at the lower port of the conical stirring tank body, a vacuum valve and a feed inlet are arranged on the upper cover, a sealing cover plate is arranged on the feed inlet, and an adjusting device is arranged in the middle of the upper cover; the adjusting device comprises a flange, an annular flange and a speed reducer flange, the longitudinal section of the flange is U-shaped, the flange is fixedly connected with the annular flange, the flange and the annular flange enclose a cavity, the speed reducer flange is positioned in the cavity, the upper part of the speed reducer flange extends out of the cavity and is connected with the bottom of the speed reducer, the speed reducer flange is connected with the annular flange through an adjusting bolt, the adjusting bolt is in threaded connection with the speed reducer flange, and the adjusting bolt is matched with a first through hole in the annular flange; the improved stirring device is characterized in that a motor is arranged on the speed reducer, a rotating shaft is arranged on an output shaft of the speed reducer, the rotating shaft penetrates through the flange and the annular flange to be located in the stirring tank body, stirring blades are arranged on the periphery of the rotating shaft, a scraping plate is arranged on one side of each stirring blade, and the outer side edge of each scraping plate is consistent with the inclination direction of the inner wall of the conical stirring tank body.

A first hinged support is arranged at the bottom of the stirring tank body, a rocker arm is mounted on the first hinged support, the first hinged support is hinged with the middle part of the rocker arm, one end of the rocker arm is hinged with the lower cover, and the other end of the rocker arm is hinged with a piston rod of the air cylinder; still be equipped with the articulated seat of second on the agitator tank body, the articulated seat of second is articulated with the cylinder body of cylinder, and one side of lower cover is articulated with the agitator tank body. The stirring blade comprises anti-stirring blade and conical positive stirring blade, positive stirring blade's upper end diameter is big, the lower extreme diameter is little. The rotating shaft is provided with a connecting rod, one end of the connecting rod is fixedly connected with the rotating shaft, and the other end of the connecting rod is connected with the bottom of the conical positive stirring blade. The scraping plate is formed by connecting a fixed plate and a scraping plate, the fixed plate is connected with one side of the stirring blade, and the scraping plate is installed on the fixed plate. The speed reducer flange is connected with the flange through a fixing bolt, the fixing bolt is in threaded connection with the flange, and the fixing bolt penetrates through a third through hole of the annular flange to be matched with a second through hole in the speed reducer flange. The motor is a variable frequency motor. The vacuum valve is a vacuum pumping valve.

The utility model has the advantages of: the surfaces of the stirring tank body, the rotating shaft, the stirring blade, the scraping plate, the lower cover and the like which are contacted with the epoxy resin adhesive are sprayed with modified polytetrafluoroethylene. The adhesive force between the epoxy resin adhesive and the polytetrafluoroethylene coating is low, and the difficulty in cleaning the inside of the stirring device is reduced. Meanwhile, the polytetrafluoroethylene coating modified by SiC or Si3N4 has more excellent wear resistance, and the service life of the coating can be prolonged.

The conical stirring tank body and the adjusting device structure are adopted, so that the scraping plate can be ensured not to contact the inner wall of the stirring tank body in the stirring process, unnecessary abrasion between the scraping plate and the polytetrafluoroethylene coating on the inner wall in the stirring process can be avoided, high-efficiency stirring can be ensured, and the energy consumption is low; after the stirring is finished, the inner part of the stirring tank body needs to be cleaned by scraping the wall, and the rotating shaft, the stirring blades and the wall scraping plate can be driven to move downwards by adjusting the mounting position of the speed reducer. After the scraping plate integrally moves downwards, the scraping plate contacts the inner wall of the stirring tank body (6), the epoxy resin adhesive on the inner wall of the stirring tank body is cleaned in the rotating process of the scraping plate, the cleaning difficulty of the stirring device is reduced, and the problem of sewage treatment can be avoided by using high-pressure water cleaning. The lower cover adopting the hinged installation has a large opening angle and is convenient to disassemble, the cleaning operation is simplified, and the problem of blockage of a discharge valve in the prior art can be avoided.

The double helical blade structure is in opposite helical direction, and comprises a positive stirring blade and a negative stirring blade. In the stirring process, the rotating shaft rotates anticlockwise, the positive stirring blade drives the middle part adhesive to move upwards, the reverse stirring blade drives the peripheral part adhesive to move downwards, the adhesive in the stirring tank forms a circulation flow, the structure can improve the mixing speed and the mixing effect of the epoxy resin adhesive, and meanwhile, due to the fact that the stirring efficiency is high, the air introduction amount is reduced, the internal porosity of a mineral casting can be reduced, and the mechanical property of the material is improved. The variable frequency motor is adopted to drive the stirring blades, so that the rotating speed can be changed as required, and the functions of medium-speed stirring, high-speed cleaning and low-speed wall scraping are realized. Before the stirring operation, the porosity in the epoxy resin adhesive is further reduced by vacuumizing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view showing the lower cover of the utility model being opened in the discharging state;

FIG. 3 is an enlarged partial view of I of FIG. 1, showing the reducer flange in an upper limit position;

FIG. 4 is an enlarged partial view of I of FIG. 1 with the reducer flange in a lower limit position;

FIG. 5 is an enlarged partial view of II of FIG. 1, with the paring plate separated from the agitator tank;

FIG. 6 is an enlarged partial view of section II of FIG. 1, showing the wall scraping plate in close proximity to the blender jar body;

FIG. 7 is a schematic view of the flow of the material during the stirring process of the present invention;

FIG. 8 is a perspective view of a flange;

FIG. 9 is a schematic perspective view of an annular flange;

FIG. 10 is a perspective view of the stirring blade;

reference numerals: 1, motor 2, speed reducer 3, upper cover 4, feed inlet 41, sealing cover plate 5, vacuum valve 6, stirring tank 7, rotating shaft 8, positive stirring blade 9, negative stirring blade 10, scraping plate 101, fixing plate 102, scraping plate 11, cylinder 12, lower cover 13, rocker arm 14, adjusting device 141, flange 142, annular flange 143, adjusting bolt 144, speed reducer flange 146, cavity 15, first hinge support 16, second hinge support 17, connecting rod 18, third through hole 19, second through hole 20, first through hole.

Detailed Description

For further explaining the purpose, technical scheme and advantage of the utility model, combine the drawing to be right the technical scheme of the utility model carries out detailed description:

an epoxy adhesive agitating unit, as shown in fig. 1 and fig. 2, including conical agitator tank body 6, its upper end diameter is greater than the lower extreme diameter. An upper cover 3 is arranged at the upper port of the stirring tank body 6, and a lower cover 12 is arranged at the lower port. The lower cover 12 may be fixed at a lower port, i.e., a discharge port, by bolts. When the lower port of the stirring tank body 6 needs to be sealed, the bolt is screwed down, and the lower cover 12 is taken down when the material needs to be discharged. And the upper cover 3 is provided with a vacuum valve 5 and a feeding hole 4. The feed inlet 4 is provided with a sealing cover plate 41, and the middle part of the upper cover 3 is provided with an adjusting device 14.

As shown in fig. 3 and 4, the adjusting device 14 includes a flange 141, an annular flange 142, and a reducer flange 145. The longitudinal section of the flange 141 is U-shaped. The flange 141 and the annular flange 142 are fixedly connected, and the fixing mode can be the existing bolt fixing mode or the welding mode. The flange 141 and the annular flange 142 enclose a cavity 146. The reducer flange 145 is located in the cavity 146, and the upper portion of the reducer flange 145 extends out of the cavity 146 and is connected with the bottom of the reducer 2. The speed reducer flange 145 is connected to the annular flange 142 via an adjusting bolt 144, wherein the adjusting bolt 144 is in threaded connection with the speed reducer flange 145, and the lower end of the adjusting bolt 144 can contact the flange 141. The adjusting bolt 144 is engaged with the first through hole 20 of the annular flange 142, and the adjusting bolt 144 can move vertically along the first through hole 20. The adjusting bolt 144 is used to realize the lifting of the speed reducer 2. Three adjusting bolts 144 are typically provided to ensure that the reducer 2 is lifted vertically to avoid tilting after lifting. The three adjusting bolts 144 are circularly and uniformly distributed on the periphery of the speed reducer 2. When the adjusting bolt 144 is rotated, the reducer flange 145 does not rotate, and therefore, it moves up and down along the adjusting bolt 144. Since the height of the adjusting bolt 144 with respect to the flange 141 is constant, the height of the speed reducer 2 can be adjusted.

As shown in fig. 1, a motor 1 is arranged on the speed reducer 2, and an output shaft of the motor 1 is connected with an input shaft of the speed reducer 2. And a rotating shaft 7 is arranged on an output shaft of the speed reducer 2. The rotating shaft 7 is positioned in the stirring tank 6 through the flange 141 and the annular flange 142. The periphery of the rotating shaft 7 is provided with a stirring blade, and one side of the stirring blade is provided with a scraping plate 10. The outer side edge of the scraper wall 10 is consistent with the inner wall of the conical stirring tank body 6 in the inclined direction, namely is parallel to the generatrix of the conical stirring tank body 6.

The working principle is as follows:

firstly, a stirring procedure:

before the process, the adjusting bolts 144 need to be rotated reversely, so that the speed reducer 2 is driven by the speed reducer flange 145 to ascend along the adjusting bolts 144 until the upper surface of the speed reducer flange 145 is tightly attached to the lower surface of the annular flange 142 as shown in fig. 3, that is, the speed reducer flange 145 is fixed to the annular flange 142 through the adjusting bolts 144. At this time, the speed reducer 2 drives the rotating shaft 7, the stirring blades and the wall scraping plate 10 to move synchronously, so that the wall scraping plate 10 is separated from the inner wall of the stirring tank body 6, and a distance H is formed between the wall scraping plate 10 and the inner wall. The stirring device can be put into a high-speed stirring state.

Firstly, sealing the lower port of the stirring tank body 6 through the lower cover 12;

secondly, the sealing cover 41 on the feeding hole 4 is opened to inject the required ingredients;

thirdly, after the feeding is finished, closing the sealing cover 41, connecting the vacuum valve 5 with vacuumizing equipment, and opening the vacuum valve 5 to perform vacuumizing operation;

and finally, starting the motor 1 to work under the vacuum working condition in the stirring tank body 6, and driving the rotating shaft 7 provided with the stirring blades to stir through the speed reducer 2. After the stirring is finished, the lower cover 12 is opened to discharge the materials, and the uniformly mixed epoxy resin adhesive mixture naturally flows out.

II, cleaning:

firstly, after discharging is finished, the motor 1 is controlled to drive the rotating shaft 7 and the stirring blades to idle, and adhesives on the surfaces of the rotating shaft 7 and the stirring blades are cleaned by the action of centrifugal force.

Next, the adjusting bolts 144 are rotated to move the reducer flange 145 downward under the action of gravity, as shown in fig. 4, and the lower surface of the reducer flange is tightly attached to the upper surface of the flange 141. At this time, the outer edge of the wall scraping plate 10 is tightly attached to the inner wall of the stirring tank body 6, that is, the value of H is zero. Starting the motor 1, the motor 1 drives the speed reducer 2, the speed reducer 2 drives the rotating shaft 7 with the stirring blades to work, and the inner wall of the stirring tank body 6 is cleaned at the moment.

A plurality of feed inlets 4 can be arranged on the upper cover 3, so that the components of the epoxy resin adhesive are respectively placed into the stirring tank body 6 through the corresponding feed inlets 4 according to the proportion.

The technical innovation of the utility model is mainly embodied as follows: the variable frequency motor is adopted to drive the stirring blades, so that the rotating speed can be changed as required, and the functions of medium-speed stirring, high-speed cleaning and low-speed wall scraping are realized. The surface contacted with the epoxy resin adhesive can be sprayed with a modified polytetrafluoroethylene coating, so that the cleaning difficulty is reduced. The stirring blades with the reverse double-helix structure form circulation in the stirring process, so that the stirring efficiency is high, and the air introduction amount is reduced.

Further, as shown in fig. 2, a first hinge support 15 may be provided at the bottom of the agitator tank 6, and the first hinge support 15 is provided with the rocker arm 13. The first hinge support 15 is hinged to the middle of the swing arm 13. One end of the rocker arm 13 is hinged with the lower cover 12, and the other end is hinged with a piston rod of the cylinder 11. The stirring tank body 6 can be further provided with a second hinged seat 16, the second hinged seat 16 is hinged with the cylinder body of the air cylinder 11, one side of the lower cover 12 is hinged with the stirring tank body 6, specifically, the lower cover 12 is hinged with the lower port of the stirring tank body 6, and meanwhile, the lower cover 12 is hinged with the rocker arm 13. When discharging is required, the cylinder 11 drives the piston rod to retract so as to drive the rocker arm 13 to swing on the hinge base 15, and meanwhile, the rocker arm 13 can drive the lower cover 12 hinged on the stirring tank body 6 to open. When sealing is needed, the air cylinder 11 drives the piston rod to extend out, the rocker arm 13 is driven to reversely swing on the hinge base 15, and meanwhile, the rocker arm 13 can drive the lower cover 12 hinged on the stirring tank body 6 to close. The lower cover 12 adopting the hinge connection mode can adopt plane sealing with the flange surface of the stirring tank body, the inner surface is coated with modified polytetrafluoroethylene, and the cleaning is convenient.

Further, as shown in fig. 7 and 10, the agitating blade may be composed of a counter agitating blade 9 and a tapered positive agitating blade 8. The diameter of the upper end of the positive stirring blade 8 is large, the diameter of the lower end of the positive stirring blade is small, and the positive stirring blade is a conical spiral blade. During the stirring, rotation axis 7 drives positive stirring vane 8 and anti-stirring vane 9 and rotates in step, and the material is under the combined action of positive stirring vane 8 and anti-stirring vane 9, as shown in fig. 7, on the one hand, the region that is close to rotation axis 7 flows from bottom to top, and the region that is far away from rotation axis 7 flows from top to bottom, and on the other hand, realizes that the material flows from inside to inside, and in addition, the material still rotates along with rotation axis 7 is high-speed, can high-efficiently misce bene.

Further, as shown in fig. 7, the rotating shaft 7 is provided with a plurality of connecting rods 17, one end of each connecting rod 17 is fixedly connected with the rotating shaft 7, and the other end of each connecting rod 17 is connected with the conical forward stirring blade 8, so that the forward stirring blade 8 can be conveniently installed, and the production cost is reduced.

Further, as shown in fig. 5 and 6, the wall scraping plate 10 is formed by connecting a fixing plate 101 and a scraping plate 102, and the fixing plate 101 and the scraping plate 102 can be integrally formed. The fixed plate 101 is connected with one side of the stirring blade, and the scraper 102 is arranged on the fixed plate 101, so that automatic cleaning can be realized, and meanwhile, the processing, installation and replacement are convenient.

Further, as shown in fig. 3 and 4, the reducer flange 145 is connected to the flange 141 by fixing bolts 143. The lower end of the fixing bolt 143 is screwed with the flange 141. The fixing bolt 143 passes through the third through hole 18 of the annular flange 142 to be matched with the second through hole 19 on the speed reducer flange 145. When the inner wall of the stirring tank body 6 is cleaned by the scraping plate 10, the adjusting bolt 144 is rotated forward, so that the speed reducer flange 145 moves downwards under the action of gravity until the lower surface of the speed reducer flange is tightly attached to the upper surface of the flange 141. At this time, in order to ensure stable operation during wall scraping, the fixing bolt 143 is rotated, and the reducer flange 145 and the flange 141 are fixedly connected by the fixing bolt 143.

Further, as shown in fig. 1, the motor 1 is a variable frequency motor, and the variable frequency motor can change the rotating speed, so as to realize the functions of medium-speed stirring, high-speed cleaning and low-speed wall scraping. Specifically, in the mixing process of the resin adhesive, the rotating speed of the variable frequency motor is controlled to be medium, and the rotating speed is controlled to be 1000-1200 rpm for stirring. After the discharging is finished, the rotating speed of the variable frequency motor can be controlled to be high, the variable frequency motor rotates at a high speed of 1500-1800 rpm, and the adhesive on the surfaces of the rotating shaft 7, the forward stirring blade 8 and the backward stirring blade 9 is cleaned by the centrifugal force. When the inner wall is cleaned, the rotating speed of the variable frequency motor is controlled to be low, namely the rotating speed is 10-20 rpm, and wall scraping is carried out.

Further, as shown in fig. 1, the vacuum valve 5 may be a vacuum valve, and is connected to a vacuum device for vacuum pumping.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings of the present invention, or the direct or indirect application thereof to other related technical fields, are included in the patent protection scope of the present invention.

Claims (8)

1. The utility model provides an epoxy adhesive agitating unit which characterized in that: the device comprises a conical stirring tank body (6), wherein an upper end opening of the conical stirring tank body (6) is provided with an upper cover (3), a lower end opening of the conical stirring tank body is provided with a lower cover (12), the upper cover (3) is provided with a vacuum valve (5) and a feeding hole (4), the feeding hole (4) is provided with a sealing cover plate (41), and the middle part of the upper cover (3) is provided with an adjusting device (14);

the adjusting device (14) comprises a flange (141), an annular flange (142) and a speed reducer flange (145), the longitudinal section of the flange (141) is U-shaped, the flange (141) is fixedly connected with the annular flange (142), a cavity (146) is defined by the flange (141) and the annular flange (142), the speed reducer flange (145) is located in the cavity (146), the upper part of the speed reducer flange (145) extends out of the cavity (146) and is connected with the bottom of the speed reducer (2), the speed reducer flange (145) is connected with the annular flange (142) through an adjusting bolt (144), the adjusting bolt (144) is in threaded connection with the speed reducer flange (145), and the adjusting bolt (144) is matched with a first through hole (20) in the annular flange (142);

be equipped with motor (1) on speed reducer (2), be equipped with rotation axis (7) on the output shaft of speed reducer (2), rotation axis (7) pass flange (141) and ring flange (142) and are located agitator tank body (6), and rotation axis (7) periphery is equipped with stirring vane, stirring vane one side is equipped with scrapes wallboard (10), scrapes wallboard (10) outside border and the unanimity of toper agitator tank body (6) inner wall incline direction.

2. The epoxy resin adhesive stirring device of claim 1, wherein: a first hinged support (15) is arranged at the bottom of the stirring tank body (6), a rocker arm (13) is mounted on the first hinged support (15), the first hinged support (15) is hinged with the middle of the rocker arm (13), one end of the rocker arm (13) is hinged with the lower cover (12), and the other end of the rocker arm is hinged with a piston rod of the air cylinder (11); still be equipped with articulated seat of second (16) on the agitator tank body (6), the articulated seat of second (16) is articulated with the cylinder body of cylinder (11), and one side of lower cover (12) is articulated with the agitator tank body (6).

3. The epoxy resin adhesive stirring device of claim 1, wherein: the stirring blade consists of a reverse stirring blade (9) and a conical forward stirring blade (8), and the diameter of the upper end of the forward stirring blade (8) is large, and the diameter of the lower end of the forward stirring blade is small.

4. The epoxy resin adhesive stirring device of claim 3, wherein: and a connecting rod (17) is arranged on the rotating shaft (7), one end of the connecting rod (17) is fixedly connected with the rotating shaft (7), and the other end of the connecting rod is connected with the bottom of the conical forward stirring blade (8).

5. The epoxy resin adhesive stirring device of claim 1, wherein: the scraper wall plate (10) is formed by connecting a fixing plate (101) and a scraper (102), the fixing plate (101) is connected with one side of the stirring blade, and the scraper (102) is installed on the fixing plate (101).

6. The epoxy resin adhesive stirring device of claim 1, wherein: the speed reducer flange (145) is connected with the flange (141) through a fixing bolt (143), the fixing bolt (143) is in threaded connection with the flange (141), and the fixing bolt (143) penetrates through a third through hole (18) of the annular flange (142) to be matched with a second through hole (19) in the speed reducer flange (145).

7. The epoxy resin adhesive stirring device of claim 1, wherein: the motor (1) is a variable frequency motor.

8. The epoxy resin adhesive stirring device of claim 1, wherein: the vacuum valve (5) is a vacuum pumping valve.

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