CN110947447A

CN110947447A - Superfine grinding device for powder coating

Info

Publication number: CN110947447A
Application number: CN201911243506.4A
Authority: CN
Inventors: 郭平
Original assignee: Hanshan Lingchuang New Material Technology Co ltd
Current assignee: Hanshan Lingchuang New Material Technology Co ltd
Priority date: 2019-12-06
Filing date: 2019-12-06
Publication date: 2020-04-03

Abstract

The invention relates to the technical field of paint grinding machines, in particular to a powder paint superfine grinding device which comprises a fixing frame, a grinding cylinder and a storage bin, wherein the lower end of the grinding cylinder is provided with a support leg, the support leg is welded with the bottom of the fixing frame, the storage bin is arranged at the top end of the fixing frame, the left end and the right end of the lower surface of the storage bin are both connected with a feed hopper, the feed hopper is communicated with the upper surface of the grinding cylinder, the lower surface of the top end of the fixing frame is fixedly provided with a speed reducing motor, and the lower end of an output shaft of the speed reducing motor; according to the invention, the reciprocating screw rod is driven to rotate by the speed reducing motor, so that the movable circular truncated cone grinding block moves up and down, and the grinding gap is gradually reduced in the grinding process, so that the superfine grinding of the powder coating is realized, and the grinding effect is excellent.

Description

Superfine grinding device for powder coating

Technical Field

The invention relates to the technical field of paint grinders, in particular to a superfine grinding device for powder paint.

Background

The powder coating is a solid powder synthetic resin coating composed of solid resin, pigment, filler, auxiliary agent and the like. The processing steps of the powder coating comprise the working procedures of mixing and stirring, melt extrusion, tabletting and curing, grinding and crushing and the like. The grinding of powder coatings is a crucial step in determining the properties of the powder coatings during use, and if the powder coatings are coarse, the coating surface will not be uniform, so the conventional production process needs to divide the grinding of powder coatings into two steps, i.e. coarse grinding and fine grinding.

The invention with the patent number of CN108160274B discloses a powder grinding device for producing water-soluble paint, which comprises a processing barrel and a circulating barrel, wherein a movable grinding block and a fixed grinding block which can be matched with powder to grind are arranged in the processing barrel, the movable grinding block is hollow inside, sieve holes are formed in the side wall of the movable grinding block, a funnel-shaped channel is formed in the fixed grinding block, a fixed shaft and a closed curve chute are formed in the inner wall of the fixed grinding block, semicircular filter screens are respectively hinged to the two sides of the fixed shaft, and grooves are formed in the circumferential lines of the filter screens. This powder grinder is when grinding coating powder, the grinding gap between its activity abrasive brick and the fixed abrasive brick is fixed unchangeable, if will grind the gap and set up the undersize though can carry out the fine grinding to powder coating, but if the granularity of the crushing coating that adds is great then can't effectively get into it and grind the processing in the gap, and if will grind the gap and set up too big, then can only carry out the corase grind to powder coating, still need adjust after the corase grind and grind the gap, carry out the fine grinding to powder coating again, the step of grinding the processing has been increased, and the production cost is improved. Therefore, aiming at the defects of the existing powder coating grinding equipment, the invention provides a grinding device capable of directly carrying out superfine grinding on the powder coating with larger granularity, which is a technical problem to be solved.

Disclosure of Invention

The invention aims to solve the technical problem of designing a superfine grinding device for powder coating, which is used for solving the defects of complicated steps and increased production cost caused by the fact that grinding gaps are fixed and need to be coarsely ground and finely ground when the conventional powder coating is ground.

The invention is realized by the following technical scheme:

a superfine grinding device for powder coatings comprises a fixing frame, a grinding cylinder and a storage bin, wherein the lower end of the grinding cylinder is provided with a support leg, the support leg is welded with the bottom of the fixing frame, the storage bin is arranged at the top end of the fixing frame, the left end and the right end of the lower surface of the storage bin are both connected with a feed hopper, the feed hopper is communicated with the upper surface of the grinding cylinder, a speed reduction motor is fixed on the lower surface of the top end of the fixing frame, the lower end of an output shaft of the speed reduction motor, which penetrates through the center of the upper surface of the storage bin, is connected with a reciprocating screw rod, a big bearing is welded on the inner wall of the grinding cylinder, a rotary annular grinding block is welded on the inner ring of the big bearing, a grinding surface in the shape of an inverted circular truncated cone is arranged in the middle of, the output shaft of the driving motor is connected with a pinion, the grinding cylinder is provided with a notch, and the pinion extends into the notch to be meshed with the bull gear;

a movable round platform grinding block is arranged right above the grinding surface, a sliding sleeve matched with the reciprocating screw rod is welded on the upper surface of the movable round platform grinding block, a through hole capable of extending into the reciprocating screw rod is arranged on the movable round platform grinding block at the center of the sliding sleeve, sliding holes are arranged on the movable round platform grinding blocks at the left side and the right side of the sliding sleeve, the left and right ends of the top wall of the grinding cylinder are provided with limit slide bars which extend into the slide holes, the left and right ends of the slide sleeve are connected with ejector rods, the lower end of the feed hopper extending into the grinding cylinder is connected with a blanking channel, a movable baffle is rotatably arranged in the blanking channel, the outer end of the movable baffle plate extends out of the blanking channel, the movable baffle plate extending out of the blanking channel is connected with a return spring connected with the top wall of the grinding cylinder, and the ejector rod of the movable circular truncated cone grinding block is abutted against the outer end of the movable baffle plate in the upward movement process.

As a further improvement of the proposal, a filter screen is rotatably arranged below the rotary annular grinding block, a fixed block is welded on the inner wall of the grinding cylinder below the filter screen, the fixed block is connected with a vibration spring connected with a screen frame of the filter screen, the lower end of the movable round platform grinding block is connected with a supporting rod which is abutted against the filter screen, a grinding cylinder positioned below the filter screen is connected with a coarse grain channel, the outer side surface of the grinding cylinder is provided with a vertically upward auger conveyor, the coarse grain channel is communicated with the lower end of the auger conveyor, the upper end of the auger conveyor is communicated with the storage bin, the insufficiently ground coarse coating powder can be screened out by arranging the filter screen, then returning to the storage bin for secondary grinding under the action of the auger conveyor until qualified superfine powder coating can be obtained through the filter screen.

As a further improvement of the scheme, the upper end of the rotary annular grinding block is provided with an annular guide plate, guide chutes are formed in the left side surface and the right side surface of the upper end of the movable circular truncated cone grinding block, so that the paint to be ground falling from the blanking channel can fall into a grinding gap along the guide chutes, and the annular guide plate can prevent the paint to be ground from falling into the outer side surface of the rotary annular grinding block.

As a further improvement of the scheme, the lower end of the grinding cylinder is connected with a discharge pipe, and a drawing baffle is arranged on the discharge pipe, so that the powder coating which is qualified after grinding can be conveniently packaged in a packaging bag.

As a further improvement of the scheme, the grinding surfaces and the circumferential surfaces at the lower ends of the movable circular truncated cone grinding blocks are provided with the grinding layers, so that the wear resistance of the movable circular truncated cone grinding blocks and the wear resistance of the rotary annular grinding blocks can be improved, and the service life of the rotary annular grinding blocks can be prolonged.

As a further improvement of the scheme, a transparent observation window is arranged on the storage bin, a feed inlet is arranged at the upper end of the storage bin, a cover plate is arranged on the feed inlet, the amount of the raw materials in the storage bin is observed in real time through the transparent observation window, and the cover plate can be conveniently opened to supplement the powder coating in time.

Has the advantages that:

1. compared with the prior art, the invention drives the reciprocating screw rod to rotate through the speed reducing motor, the movable circular truncated cone grinding block does up-and-down reciprocating motion under the action of the sliding sleeve and the reciprocating screw rod, when the movable circular truncated cone grinding block moves upwards, the ejector rod of the movable circular truncated cone grinding block pushes the outer end of the movable baffle plate, so that the blanking channel is opened, the paint to be ground in the storage bin falls into a grinding gap between the movable circular truncated cone grinding block and the rotary annular grinding block along the guide chute, the grinding gap is larger at the moment, the coarse grinding of the paint to be ground can be carried out, the movable circular truncated cone grinding block moves downwards along with the continuous rotation of the reciprocating screw rod, the movable baffle plate closes the blanking channel under the action of the reset spring, the grinding gap is gradually smaller along with the descending of the movable circular truncated cone grinding block at the moment, so that the fine grinding of the paint in the continuous gliding process after the coarse, the polishing effect is excellent.

2. The filter screen is rotatably arranged below the rotary annular grinding block, the ground powder coating can pass through the filter screen in a very small particle size, so that the powder coating meeting the requirement can be screened, the coating which does not meet the grinding requirement is poured into the coarse particle channel by inclining the filter screen due to the fact that the support rod is in contact with the filter screen in a contact manner, and then the coating is conveyed to the storage bin by the auger conveyor to be continuously ground for the second time, so that the particle size requirement of all the ground coatings can be met, and the uniformity of the ground powder coating can be guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of the present embodiment 1;

FIG. 2 is a view showing an internal structure of a polishing cartridge in a first state according to this embodiment 1;

FIG. 3 is a view showing an internal structure of a polishing cartridge in a second state according to example 1;

FIG. 4 is a cross-sectional view taken along plane A-A of FIG. 3;

FIG. 5 is an enlarged internal structural view at B in FIG. 3;

fig. 6 is a schematic perspective view of the movable circular truncated cone grinding block in the embodiment 1;

FIG. 7 is a schematic perspective view of the present embodiment 2;

FIG. 8 is an internal structural view of a polishing cylinder in this example 2;

fig. 9 is a cross-sectional view taken at C-C in fig. 8.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the present invention can be understood by those skilled in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meanings of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail with reference to the accompanying drawings 1 to 8, in conjunction with the embodiments.

Example 1

Embodiment 1 specifically introduces a powder coating ultrafine grinding device, as shown in fig. 1 to 6, the main structure of the device includes a fixing frame 1, a grinding cylinder 2 and a storage bin 3, three support legs 4 are arranged at the lower end of the grinding cylinder 2, the support legs 4 are welded to the bottom of the fixing frame 1, a discharge pipe 5 is connected to the lower end of the grinding cylinder 2, and a pull baffle 6 is arranged on the discharge pipe 5. The storage bin 3 is arranged on the top end of the fixing frame 1, the left end and the right end of the lower surface of the storage bin 3 are connected with feed hoppers 7, the feed hoppers 7 are communicated with the upper surface of the grinding cylinder 2, a transparent observation window (not shown in the figure) is arranged on the storage bin 3, a feed inlet is further arranged at the upper end of the storage bin, a cover plate 8 is arranged on the feed inlet, the amount of raw materials in the storage bin 3 is observed in real time through the transparent observation window, and the cover plate 8 can be conveniently opened to supplement powder coatings in time.

A speed reducing motor 9 is fixed on the lower surface of the top end of the fixing frame 1, an output shaft of the speed reducing motor 9 penetrates through the center of the upper surface of the storage bin 3 and extends into the grinding cylinder 2, and the lower end of the output shaft is connected with a reciprocating screw rod 10 through a coupling (not marked in the figure). The inner wall of the grinding cylinder 2 is welded with a large bearing 11, the inner ring of the large bearing 11 is welded with a rotary annular grinding block 12, the middle of the rotary annular grinding block 12 is provided with a grinding surface in the shape of an inverted circular truncated cone, the lower end of the circumferential surface of the rotary annular grinding block 12 is welded with a large gear 13, the outer surface of the grinding cylinder 2 is welded with a driving motor 14, the output shaft of the driving motor 14 is connected with a small gear 15, the grinding cylinder 2 is provided with a notch (not marked in the figure), the small gear 15 extends into the notch to be meshed with the large gear 13, and the rotary annular grinding block 12 rotates inside the grinding cylinder 2 under the action of the driving motor 14.

The movable circular truncated cone grinding block 16 is arranged right above the grinding surface, the movable circular truncated cone grinding block 16 consists of an upper circular truncated cone body and a lower circular truncated cone body, a grinding gap is formed between the circumferential side surface of the lower circular truncated cone body of the movable circular truncated cone grinding block 16 and the grinding surface, grinding layers 25 are arranged on the grinding surface and the circumferential surface of the lower end of the movable circular truncated cone grinding block 16, and the wear resistance of the movable circular truncated cone grinding block 16 and the wear resistance of the rotary annular grinding block 12 can be improved. The upper surface welding of activity round platform abrasive brick 16 has sliding sleeve 17, and its sliding sleeve 17 cooperatees with reciprocal lead screw 10 to set up the through-hole 18 that can stretch into reciprocal lead screw 10 on the activity round platform abrasive brick 16 of sliding sleeve 17 center department, all set up the slide opening 19 on the activity round platform abrasive brick 16 of the both sides about sliding sleeve 17 simultaneously, both ends all are provided with the spacing slide bar 20 that plays limiting displacement in stretching into slide opening 19 about the roof of grinding vessel 2.

Ejector rods 21 are connected to the left end and the right end of the sliding sleeve 17, a blanking channel 22 is connected to the lower end, extending into the grinding cylinder 2, of the feed hopper 7, a movable baffle plate 23 is rotatably arranged in the blanking channel 22, the outer end of the movable baffle plate 23 extends out of the blanking channel 22, a return spring 24 connected with the top wall of the grinding cylinder 2 is connected to the movable baffle plate 23 extending out of the blanking channel 22, and when the movable circular truncated cone grinding block 16 moves upwards, the ejector rods 21 are abutted to the outer end of the movable baffle plate 23, so that the effect of opening the blanking channel 22 can be achieved.

In addition, in this embodiment 1, an annular material guiding plate 26 is further disposed at the upper end of the rotating annular grinding block 12, and material guiding slots 27 are disposed on both left and right sides of the upper end of the re-movable circular truncated cone grinding block 16, so as to ensure that the paint to be ground falling from the material dropping channel 22 falls into the grinding gap along the material guiding slots 27, and the annular material guiding plate 26 can prevent the paint to be ground from falling into the outer side surface of the rotating annular grinding block 12, which affects the performance of the large bearing 11.

Example 2

Embodiment 2 is a further improvement on the basis of embodiment 1, and its main improvement point is as shown in fig. 7-9, a filter screen 28 is rotatably disposed below the rotary annular grinding block 12, a fixed block 29 is welded on the inner wall of the grinding cylinder 2 below the filter screen 28, a vibration spring 30 connected between the fixed block 29 and a screen frame of the filter screen 28 is connected, meanwhile, a resisting rod 31 is connected to the lower end of the movable circular truncated cone grinding block 16, and when the movable circular truncated cone grinding block 16 moves downward under the action of the reciprocating screw rod 10 and the sliding sleeve 17, the resisting rod 31 is contacted with one end of the filter screen 28, so that the filter screen 28 inclines. And a coarse grain channel 32 is connected on the grinding cylinder 2 below the inclined end of the filter screen 28, an auger conveyor 33 is arranged on the outer side surface of the grinding cylinder 2, the auger conveyor 33 is vertically and upwards arranged, the coarse grain channel 32 is communicated with the lower end of the auger conveyor 33, and the upper end of the auger conveyor 33 is communicated with the storage bin 3. This embodiment 2 can select the thick coating powder who grinds inadequately through setting up filter screen 28, then grinds once more in returning storage silo 3 again under auger conveyor 33's effect, until can obtain qualified superfine powder coating through the filter screen, has greatly increased the degree of consistency of grinding back powder coating, has guaranteed powder coating's performance.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The superfine grinding device for the powder coating comprises a fixing frame, a grinding cylinder and a storage bin, and is characterized in that a supporting leg is arranged at the lower end of the grinding cylinder and is welded with the bottom of the fixing frame, the storage bin is arranged at the top end of the fixing frame, the left end and the right end of the lower surface of the storage bin are both connected with a feed hopper, the feed hopper is communicated with the upper surface of the grinding cylinder, a speed reducing motor is fixed on the lower surface of the top end of the fixing frame, a reciprocating screw rod is connected to the lower end, penetrating through the center of the upper surface of the storage bin, of an output shaft of the speed reducing motor, a big bearing is welded on the inner wall of the grinding cylinder, a rotary annular grinding block is welded on the inner ring of the big bearing, a grinding surface in the shape of an inverted truncated cone is arranged in the middle of the rotary annular grinding, the output shaft of the driving motor is connected with a pinion, the grinding cylinder is provided with a notch, and the pinion extends into the notch to be meshed with the bull gear;

2. The ultrafine grinding device for powder coatings according to claim 1, characterized in that a filter screen is arranged below the rotary annular grinding block in a rotary manner, a fixing block is welded on the inner wall of the grinding cylinder below the filter screen, a vibration spring connected with a screen frame of the filter screen is connected onto the fixing block, a support rod abutted against the filter screen is connected to the lower end of the movable circular truncated cone grinding block, a coarse grain channel is connected onto the grinding cylinder below the filter screen, a vertical upward auger conveyor is arranged on the outer side surface of the grinding cylinder, the coarse grain channel is communicated with the lower end of the auger conveyor, and the upper end of the auger conveyor is communicated with a storage bin.

3. The powder coating material superfine grinding device of claim 1, wherein the upper end of the rotating annular grinding block is provided with an annular material guide plate, and the left and right sides of the upper end of the movable circular truncated cone grinding block are provided with material guide grooves.

4. The apparatus as claimed in any one of claims 1 to 3, wherein a discharge pipe is connected to a lower end of the grinding drum, and a drawing baffle is provided on the discharge pipe.

5. The apparatus as claimed in claim 1, wherein the polishing surface and the circumferential surface of the lower end of the movable circular table polishing block are provided with polishing layers.

6. The fine grinding device for powder coating according to claim 1, wherein the storage bin is provided with a transparent viewing window, the upper end of the storage bin is provided with a feed opening, and the feed opening is provided with a cover plate.