CN105233981A - Dry powder feeding device - Google Patents

Abstract

The invention provides a dry powder feeding device, which belongs to the field of building materials, and includes a housing, a stirring roller and a magnetic part. It is arranged in the middle of the housing, the upper end of the stirring roller is provided with a conical cap, and the lower end is connected with a motor for driving the stirring roller to rotate, the motor is fixed on the inner wall of the housing, and the magnetic part is provided On the inner wall of the housing, the brim of the conical cap protrudes from the outer wall of the stirring roller, and a channel for the dry powder to pass is formed between the magnetic member and the stirring roller. The dry powder feeding device provided by the present invention is provided with a rotating stirring roller. When the dry powder enters, the dry powder is thrown to the magnetic part on the housing through the conical cap on the stirring roller, which can not only break up the dry powder agglomeration, but also The metal impurities mixed in the dry powder can be absorbed to prevent these metal impurities from damaging the machine equipment. The design and operation of the whole device are simple and easy to promote.

Description

Dry powder feeding device

technical field

The invention relates to the field of building materials, in particular to a dry powder feeding device.

Background technique

In the process of making building materials and coatings, various dry powder materials need to be used. These dry powder materials are stored in different storage bins due to different materials, and these different dry powder materials need to be mixed in the subsequent processing process.

In the production and transportation of dry powder, a large number of metal objects need to be contacted, and some metal parts such as nails, metal chips, etc. will enter it. These metal impurities can easily damage the mixing page of the mixer after entering the mixer and other equipment, resulting in loss, and the existing mixing system cannot mix the dry powder materials well, resulting in poor quality of the final building material coating, especially when the dry powder is damp and agglomerated, it is more likely to be unevenly mixed, and at the same time it cannot be mixed Metal impurities in dry powder are removed, so there is an urgent need for a feeding device that can remove metal impurities and mix dry powder evenly during the feeding process of machinery and equipment.

Contents of the invention

The present invention provides a dry powder feeding device, aiming to improve the above technical problems.

The present invention is achieved like this:

A dry powder feeding device, comprising a housing, a stirring roller and a magnetic part, the upper and lower ends of the housing are respectively provided with a feed inlet and a discharge outlet, the stirring roller is vertically arranged in the middle of the housing, The upper end of the stirring roller is provided with a conical cap, the lower end is connected with a motor for driving the stirring roller to rotate, the motor is fixed on the inner wall of the housing, the magnetic part is arranged on the inner wall of the housing, the The diameter of the brim of the conical cap is larger than the outer diameter of the stirring roller, and a passage for the dry powder to pass is formed between the magnetic member and the stirring roller.

The dry powder feeding device provided by this technical solution, when working, the motor moves to drive the stirring roller to rotate. When different types of dry powder raw materials enter the shell from the feeding port, they first fall on the conical cap, and the rotating conical cap will dry the powder. Throw it to the inner wall around the stirring roller. At this time, the magnetic parts set on the inner wall will contact the dry powder, and the metal debris and metal impurities mixed in the dry powder will be absorbed by the magnetic parts to prevent these metal impurities from entering the mixer and other equipment to damage the machine.

At the same time, when different dry powders enter the shell, under the centrifugal action of the conical cap, the wet and agglomerated dry powders are crushed, and different types of dry powders are initially mixed. Mix more evenly.

The rotational speed of the motor can be properly set to prevent metal impurities from being thrown out by the conical cap from violently colliding with the inner wall of the housing and the surface of the magnetic parts, so that the magnetic parts cannot absorb the metal impurities.

Further, the magnetic part is composed of at least one set of permanent magnets, the longitudinal section of the permanent magnets is an isosceles trapezoid, the thicker side of the permanent magnets is fixed on the inner wall of the housing, and the permanent magnets It is arranged along the circumferential direction of the inner wall of the housing.

The permanent magnet can be ferrite, neodymium iron boron, samarium cobalt, alnico and other materials.

The longer bottom of the permanent magnet is fixed on the inner wall of the shell, and the channel formed between the shell and the stirring roller is narrowed by the permanent magnet. On the one hand, the permanent magnet is located on the flow path of the dry powder, which is good for absorbing metal impurities. On the other hand, the isosceles The trapezoidal permanent magnet changes the flow path of the dry powder, forming a reciprocating dry powder circulation channel, which is equivalent to extending the flow path of the dry powder, increasing the contact time between metal impurities and magnetic parts, and increasing the probability of metal impurities being adsorbed.

The magnetic parts can be arranged in multiple groups, depending on the height of the housing and the size of the magnetic parts. Further, the magnetic parts are composed of two sets of permanent magnets, and the two sets of permanent magnets are arranged at intervals up and down.

Further, the stirring roller is provided with a visor, one end of the visor is fixed to the stirring roller, and the other end obliquely extends downward into the space between the two sets of permanent magnets, and the visor and the housing Create channels for dry powder to pass through.

The interval formed between the two sets of permanent magnets is also an isosceles trapezoid when viewed from the longitudinal section. A brim is set at this position. When the dry powder falls from top to bottom, it contacts the brim and the dry powder is thrown outward. It enters the gap between two sets of permanent magnets and falls onto the permanent magnets below, which further increases the probability of metal impurities being adsorbed.

At the same time, in the process of falling from top to bottom, the dry powder is first thrown to the upper permanent magnet through the conical cap, then falls along the permanent magnet to the brim of the hat, and then is thrown to the surface of the permanent magnet below by the brim of the hat. The entire falling path is reciprocating, which greatly prolongs the time for the dry powder to fall from the feed port to the discharge port and increases the probability of being adsorbed.

Dry powder is usually stored in storage bins, but due to air humidity and other reasons, there may be moisture agglomeration. These agglomerates are not conducive to mixing different kinds of dry powders evenly.

Further, the outer wall of the stirring roller is uniformly provided with a plurality of protruding teeth for crushing dry powder agglomerates.

The convex teeth rotate with the rotation of the stirring roller. During the falling process of the dry powder, the rotating convex teeth can break up the agglomerated dry powder into granules, which is convenient for mixing the dry powder evenly.

Further, it also includes a motor fixing seat, the motor fixing seat is a cavity body with one end open, the motor fixing seat is located below the stirring roller, the cavity body extends into the lower end of the stirring roller, the The motor fixing seat is fixed on the inner wall of the housing, and the motor is fixed in the cavity.

The motor is installed under the stirring roller. Since the dry powder will float around, once it enters the motor, it may affect the operation of the motor. By extending the cavity of the fixed motor into the lower end of the stirring roller, it is equivalent to covering the entire motor to prevent dry powder from entering the motor. .

Further, the lower end of the stirring roller is closed, and the lower end of the stirring roller is provided with an annular protrusion, and the protrusion forms a groove along the circumference of the outer wall of the stirring roller, and the cavity body into the groove.

Further, the conical cap is provided with ribs, and the ribs are located on the upper surface of the conical cap.

After the convex ribs are set, it is beneficial for the conical cap to throw the dry powder, so that the dry powder can be thrown farther. In this way, the dry powder is closer to the magnetic part during the falling process, and the metal impurities mixed in it can be more easily absorbed by the magnetic part. At the same time, the convex ribs can also break up the dry powder agglomeration.

Further, there are five ribs, and the ribs are arranged along the radial direction of the cone surface.

Further, there are five ribs, and the ribs are arc-shaped.

The ribs can also be arranged in other forms, and the number can be increased or decreased accordingly.

The beneficial effects of the present invention are: the dry powder feeding device provided by the present invention is provided with a rotating stirring roller, and when the dry powder enters, the dry powder is thrown to the magnetic part on the housing through the conical cap on the stirring roller, not only can The dry powder agglomerates and breaks up, and the metal impurities mixed in the dry powder can also be absorbed to prevent these metal impurities from damaging the machinery and equipment. The design and operation of the whole device are simple and easy to promote.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is a schematic structural view of a dry powder feeding device provided by an embodiment of the present invention;

Fig. 2 is a schematic structural view of a conical cap in a dry powder feeding device provided by an embodiment of the present invention;

Fig. 3 is a schematic structural view of a conical cap in a dry powder feeding device provided by an embodiment of the present invention.

The marks in the figure are:

Shell 201; feed port 202; discharge port 203; stirring roller 204; conical cap 205; protruding teeth 206; brim 207; permanent magnet 208;

detailed description

In the process of making building materials and coatings, various dry powder materials need to be used. These dry powder materials are stored in different storage bins due to different materials, and these different dry powder materials need to be mixed in the subsequent processing process.

In the production and transportation of dry powder, a large number of metal objects need to be contacted, and some metal parts such as nails, metal chips, etc. will enter it. These metal impurities can easily damage the mixing page of the mixer after entering the mixer and other equipment, resulting in loss, and the existing mixing system cannot mix the dry powder materials well, resulting in poor quality of the final building material coating, especially when the dry powder is damp and agglomerated, it is more likely to be unevenly mixed, and at the same time it cannot be mixed Metal impurities in dry powder are removed, so there is an urgent need for a feeding device that can remove metal impurities and mix dry powder evenly during the feeding process of machinery and equipment.

Those skilled in the art have been looking for a tool or method to improve this problem for a long time.

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying References to devices or elements must have a particular orientation, be constructed, and operate in a particular orientation and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, and it can be the internal communication of two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

Example 1

As shown in Figures 1 to 2, this embodiment provides a dry powder feeding device, including a housing 201, a stirring roller 204, a magnetic member and a motor fixing seat 209, and the upper and lower ends of the housing 201 are respectively set into The material inlet 202 and the material outlet 203, the housing 201 is made of metal material, the whole housing 201 is cylindrical, the material inlet 202 and the material outlet 203 are respectively arranged in the middle of the upper and lower ends of the housing 201.

The stirring roller 204 is vertically arranged in the middle of the housing 201 and is located in the housing 201. The upper end of the stirring roller 204 is provided with a conical cap 205, and the conical cap 205 and the stirring roller 204 are integrally formed. Yes, the brim of the conical cap 205 protrudes from the outer wall of the stirring roller 204 to form a bamboo hat, and the conical cap 205 covers the stirring roller 204 .

The conical cap 205 is provided with a rib 211 , and the protruding rib 211 is located on the upper surface of the conical cap 205 .

In this embodiment, as shown in FIG. 2 , there are five ribs 211 , and the ribs 211 are linear and arranged along the radial direction of the tapered surface.

After the rib 211 is provided, it is beneficial for the conical cap 205 to throw the dry powder, so that the dry powder is thrown farther. In this way, the dry powder is closer to the magnetic part during the falling process, and the metal impurities mixed therein can be more easily absorbed by the magnetic part, and the ribs 211 can also break up the agglomeration of the dry powder.

The motor fixing seat 209 is a cavity body with an open end, the motor fixing seat 209 is located below the stirring roller 204, the cavity body extends into the lower end of the stirring roller 204, and the motor fixing seat 209 is fixed On the inner wall of the casing 201, the motor 210 is fixed in the cavity.

The lower end of the stirring roller 204 is connected to the motor 210. Specifically, in this embodiment, the stirring roller 204 is cylindrical, the upper end of the stirring roller 204 is a conical cap 205 and forms a seal, and the lower end is directly connected to the motor 210. structure.

The lower end of the stirring roller 204 is provided with an annular protrusion 212 , and the protrusion 212 forms a groove along the circumference of the outer wall of the stirring roller 204 , and the motor fixing seat 209 extends into the groove.

In this way, the motor 210 is completely covered by the motor fixing seat 209 and the protrusion 212 , preventing the dry powder floating around from entering the motor 210 and affecting the operation of the motor 210 .

Dry powder is usually stored in storage bins, but due to air humidity and other reasons, there may be moisture agglomeration. These agglomerates are not conducive to mixing different kinds of dry powders evenly. Therefore, protruding teeth 206 are provided on the outer wall of the stirring roller 204 . The protruding teeth 206 are used to crush dry powder agglomerates when the stirring roller 204 rotates.

The magnetic parts are arranged on the inner wall of the housing 201, and the magnetic parts can be arranged in multiple groups, depending on the height of the housing 201 and the size of the magnetic parts. In this embodiment, the magnetic parts are composed of two sets of permanent magnets 208, two sets of permanent magnets 208 are arranged at intervals up and down.

The interval formed between the two sets of permanent magnets 208 is also an isosceles trapezoid when seen from the longitudinal section. As shown in FIG. 1 , the channel width at the interval between the two sets of permanent magnets 208 is larger.

Specifically, the longitudinal section of the permanent magnet 208 is an isosceles trapezoid, the longer bottom edge of the permanent magnet 208 is fixed on the inner wall of the housing 201, and the permanent magnet 208 is along the inner wall of the housing 201. Circumferential setting.

The position of the discharge port 203 is also provided with an inclined discharge plate, which is inclined towards the discharge port 203 to prevent dry powder from accumulating in the housing 201. Preferably, the discharge plate can also be set as a magnetic material to increase the magnetic field. Adsorption area.

The permanent magnet 208 can be made of materials such as ferrite, neodymium iron boron, samarium cobalt, and alnico.

A more preferred embodiment is to set a visor 207 on the stirring roller 204, one end of the visor 207 is fixed to the stirring roller 204, and the other end obliquely extends downward into the space between the two sets of permanent magnets 208, the visor 207 and the A passage for the dry powder to pass is formed between the housings 201 .

After setting like this, in the process that dry powder falls from top to bottom, contact with brim of hat 207, and brim of hat 207 rotates with stirring roller 204, and dry powder is thrown out and enters the interval between two groups of permanent magnets 208, and falls to the space between two groups of permanent magnets 208, and falls to On the permanent magnet 208 below, the probability of metal impurities being adsorbed is further increased.

Simultaneously, in the process of the dry powder falling from top to bottom, it is first thrown onto the permanent magnet 208 above through the conical cap 205, then falls along the permanent magnet 208 to the brim of the hat 207, and is then thrown to the permanent magnet 208 below by the brim of the hat 207. surface. The entire falling path is reciprocating, which greatly prolongs the time for the dry powder to fall from the feed port 202 to the discharge port 203 and increases the probability of being adsorbed.

Embodiment 2, referring to Fig. 3

The basic structure, principle and technical effect of the dry powder feeding device provided in this example are the same as those in Example 1. For a brief description, for parts not mentioned in this example, refer to the corresponding content in Example 1.

The difference between this embodiment and Embodiment 1 is that in this embodiment, the convex ribs 211 on the conical cap 205 are arc-shaped, as shown in Figure 3, there are five convex ribs 211, and the convex ribs 211 are formed from the conical cap 205. The apex is drawn until the brim of the conical cap 205. The benefit of this arc-shaped rib 211 is that the length of the rib 211 is longer than the linear rib 211. The contact area is larger, and the pulverization and mixing effect of dry powder is better.

The dry powder feeding device provided by the above-mentioned embodiments, when working, the motor 210 moves to drive the stirring roller 204 to rotate. When different types of dry powder raw materials enter the housing 201 from the feed port 202, they first fall on the conical cap 205 and rotate The convex rib 211 of the dry powder throws the dry powder to the inner wall around the stirring roller 204. At this time, the magnetic parts arranged on the inner wall will contact the dry powder, and the metal debris and metal impurities mixed in the dry powder are absorbed by the magnetic parts to prevent these metal impurities from entering Equipment such as mixers can damage the machine.

When different dry powders enter the housing 201, under the centrifugal action of the conical cap 205, the wet and agglomerated dry powders are crushed, and different types of dry powders are initially mixed, and these preliminary mixed dry powders can be mixed after entering the mixer Mix more evenly.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A dry powder feeding device, characterized in that it comprises a housing, a stirring roller and a magnetic member, the upper and lower ends of the housing are respectively provided with a feed inlet and a discharge outlet, and the stirring roller is vertically arranged on the The middle part of the casing, the upper end of the stirring roller is provided with a conical cap, the lower end is connected with a motor for driving the stirring roller to rotate, the motor is fixed on the inner wall of the casing, and the magnetic part is arranged on the casing The inner wall of the body, the diameter of the brim of the conical cap is larger than the outer diameter of the stirring roller, and a channel for the dry powder to pass is formed between the magnetic member and the stirring roller. 2. The dry powder feeding device according to claim 1, wherein the magnetic member is composed of at least one set of permanent magnets, the longitudinal section of the permanent magnets is an isosceles trapezoid, and the thicker part of the permanent magnets One side is fixed to the inner wall of the housing, and the permanent magnet is arranged along the circumferential direction of the inner wall of the housing. 3. The dry powder feeding device according to claim 2, wherein the magnetic member is composed of two sets of permanent magnets, and the two sets of permanent magnets are arranged at intervals up and down. 4. The dry powder feeding device according to claim 3, wherein the stirring roller is provided with a visor, one end of the visor is fixed to the stirring roller, and the other end obliquely extends downward into two sets of permanent In the space between the magnets, a channel for dry powder to pass is formed between the visor and the housing. 5. The dry powder feeding device according to claim 1, characterized in that, the outer wall of the stirring roller is uniformly provided with a plurality of protruding teeth for crushing dry powder agglomerates. 6. The dry powder feeding device according to claim 1, further comprising a motor fixing seat, the motor fixing seat is a cavity with an opening at one end, and the motor fixing seat is located below the stirring roller, so that The accommodating cavity extends into the lower end of the stirring roller, the motor fixing seat is fixed on the inner wall of the housing, and the motor is fixed in the accommodating cavity. 7. dry powder feeding device according to claim 6, is characterized in that, the lower end of described stirring roller is closed, and the lower end of described stirring roller is provided with annular bump, and described bump is along the bottom of described stirring roller. A groove is surrounded around the outer wall, and the accommodating cavity extends into the groove. 8. The dry powder feeding device according to claim 1, characterized in that, the conical cap is provided with ribs, and the ribs are located on the upper surface of the conical cap. 9 . The dry powder feeding device according to claim 8 , wherein there are five ribs, and the ribs are arranged along the radial direction of the cone surface. 10. The dry powder feeding device according to claim 8, wherein there are five ribs, and the ribs are arc-shaped.