CN109127013B

CN109127013B - Prevent sand mill of jam

Info

Publication number: CN109127013B
Application number: CN201810836427.3A
Authority: CN
Inventors: 谭贺洵; 贺春扬; 樊腾飞
Original assignee: Foshan Xunteng Technology Co ltd
Current assignee: Suzhou Huangguan Paint Technology Development Co.,Ltd.
Priority date: 2018-07-26
Filing date: 2018-07-26
Publication date: 2021-06-18
Anticipated expiration: 2038-07-26
Also published as: CN109127013A

Abstract

The invention provides an anti-blocking sand mill, which comprises a motor, a grinding cylinder, a material conveying pump, a main shaft, a stirring device, a plurality of dispersion discs, a gauze and a cleaning device, wherein the main shaft is connected with an output shaft of the motor and is concentrically arranged with the grinding cylinder; a plurality of dispersion discs are sleeved on the main shaft and are uniformly distributed along the axial direction of the main shaft; the one end that is close to the motor in the grinding vessel is equipped with agitating unit, and agitating unit sets up on the main shaft, and this one end bottom is equipped with the feed inlet simultaneously, and the other end is equipped with gauze and cleaning device, uses the gauze as center both sides to seted up discharge gate and feed back mouth respectively near the gauze one end at the grinding vessel, and wherein the discharge gate is close to the end of grinding vessel. According to the anti-blocking sand mill, the coating with the required fineness is screened out by adding the gauze, the coating with the insufficient fineness is continuously ground through the circulating loop, the grinding quality is improved, and meanwhile, the cleaning device is added, so that holes blocked on the gauze can be cleaned timely, and the smooth discharging of the coating is ensured.

Description

Prevent sand mill of jam

Technical Field

The invention relates to the field of grinding equipment, in particular to an anti-blocking sand mill.

Background

Present grinding apparatus is generally through the structure that improves the dispersion impeller, constantly improves grinding quality, but the structure of dispersion impeller is difficult to reach the degree that influences coating particle size to the sand mill is generally through centrifugal force with the ground paste whipping, because the difference apart from the axle center distance leads to centrifugal force variation in size, makes the ground paste granule by grinding degree inconsistent, and the product thickness that directly leads to coming out is different, and the quality is uneven, and product quality is not good.

Disclosure of Invention

In order to solve the defects of the technology, the invention provides an anti-blocking sand mill which is provided with a gauze and a cleaning device, so that the required coating raw stock can be screened out, and the quality of a coating product is improved.

In order to achieve the purpose, the invention adopts the following technical scheme:

an anti-blocking sand mill comprises a motor, a grinding cylinder, a material conveying pump, a main shaft, a stirring device, a plurality of dispersion discs, a gauze and a cleaning device, wherein the main shaft is connected with an output shaft of the motor and is concentrically arranged with the grinding cylinder; the plurality of dispersion discs are sleeved on the main shaft and are uniformly distributed along the axial direction of the main shaft; the one end that is close to the motor in the grinding vessel is equipped with agitating unit, agitating unit sets up on the main shaft, this one end bottom is equipped with the feed inlet simultaneously, and the other end is equipped with gauze and cleaning device the grinding vessel is close to gauze one end with gauze has seted up discharge gate and feed back mouth respectively for central both sides, and wherein the discharge gate is close to the end of grinding vessel.

Furthermore, cleaning device includes telescopic link and plectane, on the plectane towards evenly distributed a plurality of perpendicular acupunture that set up on the face of the plectane of gauze, the plectane passes through the telescopic link setting is in grinding vessel is terminal.

Still further, the cleaning device comprises a connecting rod and a circular plate, the circular plate is connected with the tail end of the grinding cylinder through the connecting rod, and a nozzle on the circular plate is connected with a water pipe.

Further, the gauze is arranged on one side of the cleaning device far away from the tail end of the grinding cylinder, and the distance between the gauze and the tail end of the grinding cylinder is smaller than the sum of the fully extended length of the telescopic rod and the length of the needle pricks.

Furthermore, the telescopic rod of the cleaning device is connected with the driving mechanism and driven by the driving mechanism to do telescopic action.

Further, the gauze is arranged concentrically with the grinding cylinder, and the periphery of the gauze is connected with the inner wall of the grinding cylinder.

Still further, the grinding cylinder inner wall is equipped with the recess, the periphery of dispersion impeller extends to in the recess, both match in the position.

Furthermore, the feed back port is connected with the feed inlet through a conveying pipe and the material conveying pump.

Further, the stirring device and the grinding cylinder are arranged concentrically, and the stirring device is driven by the motor to rotate.

Compared with the prior art, the invention has the following beneficial effects:

the invention provides an anti-blocking sand mill which is characterized in that a coating product with a certain fineness is screened out through a gauze and a cleaning device and through a gauze with holes of a certain size, and meanwhile, the cleaning device is started in time to clean the gauze, so that the holes are kept through, and the smooth discharging of the product is ensured. In addition, a circulation loop is added, the coating with larger fineness is ground again through the circulation loop and is fully ground in continuous flow, so that the coating is fully dispersed and uniformly mixed, and the dispersion efficiency is improved; the grinding equipment has simple and reasonable design, easy operation and complete functions, and meets the production requirements.

Drawings

FIG. 1 is a schematic view of the internal structure of an anti-clogging sander according to the present invention.

Description of reference numerals:

1-a motor; 2-grinding cylinder; 3-a main shaft; 4-a stirring device; 5-a dispersion plate; 6-groove; 7-a gauze;

8-a cleaning device; 9-a material conveying pump; 10-a discharge hole; 11-a feed inlet; 12-feed back port.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.

As shown in fig. 1, the invention provides an anti-clogging sand mill, which comprises a motor 1, a grinding cylinder 2, a material conveying pump 9, a main shaft 3, a stirring device 4, a plurality of dispersion discs 5, a gauze 7 and a cleaning device 8, wherein the main shaft 3 is connected with an output shaft of the motor 1 and is arranged concentrically with the grinding cylinder 2, and the main shaft 3 can be driven to rotate by starting the motor 1; the dispersion discs 5 are sleeved on the main shaft 3 and are evenly distributed along the axial direction of the main shaft 3, the cross-sectional structures of the dispersion discs 5 are a central ring and an outer ring, and a strip-shaped body is connected between the central ring and the outer ring. The connection between the dispersion disc 5 and the main shaft 3 is that a central ring of the dispersion disc 5 is sleeved on the main shaft 3, and a bearing, a sealing ring and other structures are fixedly connected. The dispersion discs 5 can be driven by the main shaft 3 to do circular motion, so that the coating flowing between the dispersion discs 5 can vibrate, shear, break and the like, and the grinding effect is achieved. The dispersion discs 5 are provided with a plurality of dispersion discs and distributed along the axial direction of the main shaft 3, and the structures of the dispersion discs 5 at different axial positions can be different. The stirring device 4 is arranged at one end, close to the motor 1, in the grinding cylinder 2, the stirring device 4 is also arranged on the main shaft 3, and meanwhile, the bottom of the end is provided with the feeding hole 11, and the design is to primarily vibrate and disperse the coating which is just fed into the grinding cylinder 2 through the stirring of the stirring device 4; the other end is equipped with gauze 7 and cleaning device 8, cleaning device 8 is close to the end of grinding vessel 2 is keeping away from one side that grinding vessel 2 is terminal is equipped with gauze 7, gauze 7 is close to cleaning device 8 sets up, is close to the inside of grinding vessel 2 agitating unit 4 with be a plurality of between the gauze 7 dispersion impeller 5. Grinding vessel 2 is close to gauze 7 one end with gauze 7 has seted up discharge gate 10 and feed back mouth 12 respectively for center both sides, and wherein discharge gate 10 is close to grinding vessel 2's end sets up grinding vessel 2's bottom, feed back mouth 12 sets up grinding vessel 2's top, feed back mouth 12 sets up last dispersion impeller 5 with between the gauze 7.

The cleaning device 8 has two schemes, namely: the cleaning device 8 comprises a telescopic rod and a circular plate, a plurality of vertically arranged needle pricks are uniformly distributed on the circular plate surface of the circular plate facing the gauze 7, and the circular plate is arranged at the tail end of the grinding cylinder 2 through the telescopic rod; and (2) a second needling scheme: the cleaning device 8 comprises a connecting rod and a circular plate, the circular plate is connected with the tail end of the grinding cylinder 2 through the connecting rod, and a nozzle on the circular plate is connected with a water pipe. In a first scheme, the distance between the cleaning device 8 and the gauze 7 is smaller than the sum of the length of the telescopic rod after the telescopic rod is completely extended and the length of the needle pricks, so that when the gauze 7 is blocked by paint, the needle pricks on the cleaning device 8 can contact the gauze 7 and penetrate through holes in the gauze 7, the holes are kept in a transparent state, the paint flowing through the dispersion disc 5 is conveniently screened, the paint with fineness can flow through the gauze through the holes and flows to the discharge port 10, the part with insufficient fineness flows to the feed back port 12, and the next grinding process is carried out again. The telescopic rod of the cleaning device 8 is connected with the driving mechanism and driven by the driving mechanism to do telescopic action. Because the needling and the telescopic rod are both parts on the cleaning device 8, when the telescopic rod is driven by the driving mechanism to do telescopic action, the telescopic rod can drive the needling to do the action of extending and retracting towards the gauze 7. The acupuncture is parallel to each other and evenly sets up on cleaning device 8's plectane surface, be on a parallel with the direction of main shaft 3, orientation and perpendicular to gauze 7, and the syringe needle of acupuncture is less than the size of gauze punchhole guarantees the acupuncture can pierce through the punchhole, will block up the coating of punchhole is disclosed, lets the punchhole keeps penetrating state, forms unobstructed discharging channel. In another embodiment, the driving mechanism is connected with a control unit, the control unit controls the starting and the closing, time can be input manually, and the driving mechanism is controlled to be started intermittently, so that the needle punching can clean the gauze intermittently, and the manual frequent operation is reduced. In the second scheme, the cleaning device 8 adopts a high-pressure water jet mode to clean holes in which the gauze 7 is blocked, and similarly, a control module is arranged in the cleaning device 8 and is connected with a high-pressure water pump, an intermittent water spraying mode is adopted, the interval time and the water spraying time are automatically set, and then the interval time and the water spraying time are input into the control module. For example, the intermittent time is two minutes, the water spraying time is five minutes, namely when the coating flows through the grinding cylinder 2, the control module in the cleaning device 8 can control the water spraying for five minutes every two minutes, when the water spraying is needed, the control module sends a water spraying instruction, starts the high-pressure water pump, pumps the water in the water tank, conveys the water to the nozzle of the cleaning device 8 through the water pipe, and sprays the water out of the nozzle, because the nozzle is over against the eyelet of the gauze 7, the coating adhered to the eyelet can be washed away by the high-pressure water sprayed from the nozzle, so that the eyelet is kept in a transparent state, the small-particle coating can pass through, the coating with different fineness can be separated, and the quality of a discharged product can be ensured. And when the water spraying time is five minutes, the control module sends a pause instruction, closes the high-pressure water pump, stops spraying water, pauses for two minutes, continues to spray water, and repeats the operation.

The gauze 7 is arranged concentrically with the grinding cylinder 2, and the periphery of the gauze 7 is connected with the inner wall of the grinding cylinder 2. The gauze 7 is a disc with a plurality of holes, the outer circumference of the disc is tightly connected with the inner wall of the grinding cylinder 2 and can be sealed by a sealing ring or sealant, no gap is left between the outer circumference of the gauze 7 and the inner wall of the grinding cylinder 2, the paint is prevented from flowing through the gap, the discharged product is ensured to completely pass through the holes of the gauze 7, and thus, the fineness of the paint flowing through the holes can be ensured only by ensuring that the holes of the gauze 7 meet the micropore requirement, and the quality of the product is ensured. The gauze 7 may be made of stainless steel or glass fiber, and preferably, stainless steel is used.

The inner wall of the grinding cylinder 2 is provided with a groove 6, the periphery of the dispersion disc 5 extends into the groove 6, and the two are matched in position. 2 inner walls of grinding vessel are equipped with a plurality of recess 6 along axial direction, just with 2 centers of grinding vessel the main shaft 3 is gone up and is connected the position of dispersion impeller 5 corresponds, the periphery of dispersion impeller 5 is less than the recess department the inner wall of grinding vessel 2, but is bigger than elsewhere the inner wall of grinding vessel 2, the benefit of design like this is, let flow through the passageway of the coating of grinding vessel 2 is guaranteed as far as on the main part latus rectum passageway of grinding vessel 2, the coating of flowing through is set up on being as far as by the main part latus rectum passageway dispersion impeller 5 dispersion grinding improves grinding efficiency, reduces useless work. Although there is a little gap between the groove 6 and the dispersion plate 5, the space is small, the coating material particles can pass through the space, the amount of the coating material can pass through the space is small, the grinding effect of the sand mill is not greatly influenced, furthermore, the groove 6 is not designed on the main body path channel of the grinding cylinder 2, and is not a conventional channel through which the coating material flows, and only a small amount of the coating material can be extruded to flow through the groove 6 and the gap position between the dispersion plates 5, so that the condition that most of the coating material flows through the conventional channel and is dispersedly ground by the dispersion plate 5 can be ensured. The structure of dispersion impeller 5 is two rings that the diameter is not of uniform size, connects a plurality of irregular circular arc strip between, irregular circular arc strip one end is connected on the center ring, and the other end extends to outer peripheral ring, all on a dispersion impeller 5 irregular circular arc strip distributes along the radial direction divergence of center ring. The irregular arc strips can be replaced by a plurality of cutters, or a plurality of circular rings with different thicknesses are connected by a plurality of radial strips to form the dispersion disc 5. The dispersion discs 5 are generally provided in several numbers and are uniformly distributed along the axial direction of the main shaft 3, and the structure of the dispersion discs 5 at different axial positions can be different, and preferably, the radial strips of the dispersion discs 5, including but not limited to the irregular arc strips and the cutters, are distributed more densely in the direction of the flowing paint. The dispersion disc 5 is fixedly connected with the main shaft 3, when the main shaft 3 is started by the motor 1 to drive the main shaft to rotate, the dispersion disc 5 is also driven to do circular motion, and the rotating dispersion disc 5 is like a disc full of cutters to cut, break up and grind flowing paint, so that the grinding function of the sand mill is completed.

The feed back port 12 is connected with the feed inlet 11 through a conveying pipe and the feed delivery pump 9. The material conveying pump 9 is also connected with a raw material pool and can convey two kinds of coatings from different sources: raw materials and ground, non-conforming coatings. In addition, the feed back mouth 12 with be equipped with the valve between the conveyer pipe, and the valve is the check valve, guarantees to flow out the coating of feed back mouth 12 can not flow against the current, follow again feed back mouth 12 gets into grinding vessel 2. The working process of the structure is as follows: the circulation channel is closed, the raw material channel is opened, a certain amount of raw material coating is conveyed to the feed inlet 11 by the feed delivery pump 9, then the raw material conveying channel is closed, the circulating channel is opened, the raw material coating enters the interior of the grinding cylinder 2 from the feed inlet 11, the paint part with smaller fineness smoothly passes through the gauze 7 to come to the rear side of the gauze 7 and then flows to the discharge port 10 to become a qualified product because of the isolation of the gauze 7 after being ground by the dispersion disc 5 in the grinding cylinder 2, and the paint part with larger fineness is intercepted and stopped at the front side of the gauze 7, flows to the feed back port 12 and flows into the conveying pipe to become a circulating paint, then the mixture is pumped by the material conveying pump 9 again and is filled into the feeding hole 11, and the grinding process is repeated again. After several times, the circulation channel is closed again, the material channel is opened, and the above process is repeated. The design can feed the separated coating which does not meet the requirement into the feed inlet 11 again to enable the coating to be ground again, and the qualified coating and the unqualified coating are not directly mixed together to influence the quality of the product, so that the coating ground for a plurality of times can provide the qualified coating as much as possible, the quality of the product is improved, and the utilization rate of raw materials is also improved.

The stirring device 4 is arranged inside the grinding cylinder 2, is close to one end of the motor, is concentrically arranged with the grinding cylinder 2, and is driven to rotate by the motor 1. Agitating unit 4 sets up 5 with grinding vessel 2 is inside to be close to between the motor one end, and be close to feed inlet 11, the purpose is in order to make raw materials coating get into feed inlet 11, before grinding, once stirs at first, and preliminary dispersion disintegration is carried out, is prepared for the grinding process of follow. Agitating unit 4's structure is a plurality of stirring rakes of center pin connection, the center pin with 3 fixed connection of main shaft, along with motor 1's start-up, main shaft 3 is following the rotation, drives 3 rotations of center pin make the stirring rake then rotates to the coating of flowing through stirs.

In one embodiment, the motor 1 is started to drive the stirring device 4 and the dispersion disc 5 to make circular motion, the circulation channel is closed, the material channel is opened, the delivery pump 9 is started to extract the coating material in the material pool, and when a certain amount of coating material is extracted, the material channel is closed, and the circulation channel is opened. The coating raw materials are sent to the feeding hole 11, the coating raw materials begin to enter the grinding cylinder 2, firstly contact with the stirring device 4, are stirred and scattered by a stirring paddle of the stirring device 4, then contact with the dispersion disc 5, are ground and dispersed, and finally arrive at the front side of the gauze 7, at the moment, the coating part with smaller fineness smoothly passes through the gauze 7, arrives at the rear side of the gauze 7, then arrives at the discharging hole 10 to become a qualified product, the coating part with larger fineness is intercepted and stopped at the front side of the gauze 7, flows to the material return hole 12, flows into the conveying pipe to become a circulating coating, is pumped by the material conveying pump 9 again and conveyed to the feeding hole 11, and the stirring, grinding and separation processes are repeated. In the process, the control system of the cleaning device 8 starts to perform intermittent cleaning work, and the permeability of the holes of the gauze 7 is ensured, so that the qualified coating can pass through smoothly, and the blockage phenomenon is avoided.

The invention provides an anti-blocking sand mill, which separates grinding paint by adding a gauze, continuously stores qualified products, and sends unqualified paint to a circulating channel for secondary grinding, thereby improving the grinding efficiency; still add cleaning device, clear up the gauze in good time, guarantee the permeability of gauze, make whole grinding separation process go on in succession. The grinding equipment has simple and reasonable design, easy operation and complete functions, and meets the production requirements.

It should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The anti-blocking sand mill comprises a motor (1), a grinding cylinder (2) and a material conveying pump (9), and is characterized by further comprising a main shaft (3), a stirring device (4), a plurality of dispersion discs (5), a gauze (7) and a cleaning device (8), wherein the main shaft (3) is connected with an output shaft of the motor (1) and is concentrically arranged with the grinding cylinder (2); the dispersion discs (5) are sleeved on the main shaft (3) and are uniformly distributed along the axial direction of the main shaft (3); the grinding cylinder (2) is internally provided with the stirring device (4) at one end close to the motor (1), the stirring device (4) is arranged on the main shaft (3), the bottom of one end is provided with a feed inlet (11), the other end is provided with the gauze (7) and a cleaning device (8), one end of the grinding cylinder (2) close to the gauze (7) is respectively provided with a discharge outlet (10) and a feed back port (12) at two sides by taking the gauze (7) as the center, wherein the discharge outlet (10) is close to the tail end of the grinding cylinder (2), the cleaning device (8) comprises a telescopic rod and a circular plate, a plurality of vertically arranged acupuncture points are uniformly distributed on the circular plate surface facing the gauze (7) on the circular plate surface, the circular plate is arranged at the tail end of the grinding cylinder (2) through the telescopic rod, and the telescopic rod of the cleaning device (8) is connected with a driving mechanism, the driving mechanism drives the grinding cylinder to do telescopic motion, the gauze (7) and the grinding cylinder (2) are arranged concentrically, the periphery of the gauze (7) is connected with the inner wall of the grinding cylinder (2), and the stirring device (4) is arranged between the dispersion disc (5) and one end, close to the motor, in the grinding cylinder (2) and close to the feed port (11);

the dispersion disc (5) comprises a center ring, a peripheral ring and a plurality of irregular circular arc strips, the diameter of the center ring is not equal to that of the peripheral ring, one ends of the irregular circular arc strips are connected to the center ring, the other ends of the irregular circular arc strips extend to the peripheral ring, the irregular circular arc strips are distributed along the radial direction of the center ring in a divergent mode, and the irregular circular arc strips of the dispersion disc which move towards the flowing direction of the coating are distributed more densely.

2. An anti-clogging grinding mill according to claim 1, characterized in that the grinding cylinder (2) is provided with a groove (6) in its inner wall, and the dispersion disc (5) has its outer periphery extending into the groove (6) in a position matching therewith.

3. An anti-clogging sand mill according to claim 1, characterized in that said feed back opening (12) is connected to said feed inlet (11) through a feed pipe and said feed delivery pump (9).

4. A grit mill according to any one of claims 1 to 3, wherein said agitator means (4) is disposed concentrically with said grinding cylinder (2) and is driven in rotation by said motor (1).