WO2016049952A1

WO2016049952A1 - Vacuum spray coater

Info

Publication number: WO2016049952A1
Application number: PCT/CN2014/089022
Authority: WO
Inventors: 赫泽高托马斯克里斯坦森; 奥拉夫松卡斯滕; 格劳夫彼得晖
Original assignee: 江苏牧羊控股有限公司
Priority date: 2014-09-30
Filing date: 2014-10-21
Publication date: 2016-04-07
Also published as: CN104305498B; CN104305498A

Abstract

A vacuum spray coater, comprising a tank (1) and an auger (4) provided in the tank; the auger is connected to the top portion of the tank via a shaft; the bottom portion of the tank is provided with a circular discharging port (5); a valve (6) is installed at the discharging port; the top portion of the valve is a cone (61), and a conical point points to the auger; the cone and the auger are coaxial, and a conical surface of the cone fits with and is sealed with the circular discharging port; a spiral blade (42) of the auger spirally extends along the conical surface to the bottom portion of the tank; the bottom portion of the valve is provided with an extension and retraction device (7) for driving the discharging valve to move up and down; and the cone fits with the circular discharging port, and seals and tightly presses the discharging port via the extension and retraction device, and the spiral blade of the auger spirally extends along the conical surface of the cone to the bottom portion of the tank.

Description

Vacuum spraying machine

Technical field

The invention relates to a spraying device for feed, in particular to a vacuum spraying machine.

Background technique

The vacuum spraying machine of the prior art comprises a tank body, and a feeding port is arranged at an upper portion of the tank body, a discharging port and a valve are arranged at a lower portion of the tank body, and a cylindrical branching pipe is vertically arranged in the tank body, The upper and lower ends of the tube are respectively kept at a predetermined distance from the top and bottom of the tank, and a liquid nozzle facing the position between the branch pipe and the tank body is arranged at the upper portion of the tank body, and the auger is installed on the upper part of the tank body. The auger is inserted into the interior of the dispensing tube. The tank is also connected with a vacuuming device. The material is put into the tank body from the feed port. After the material is loaded, the feed port and the discharge port are closed, and the tank is evacuated. The auger lifts the granular material at the bottom of the tank upwards through the distribution pipe, and throws it from the upper part of the distribution pipe to the surrounding area to form a thin material layer. At this time, the liquid sprayed from the nozzle happens to be the granular material thrown out from this part. In combination, the particles between the materializing tube and the tank body flow downward and further mix, and the particles in the materializing tube move upward, and the particles in the tank body are repeatedly repeated in the above process, and repeatedly mixed to achieve the purpose of uniform liquid spraying. After the granular material is sprayed evenly, the discharge port is discharged. The publication date is January 22, 2014, the publication number is CN103527802A, and the invention patent application discloses a discharge valve of a vacuum spray machine, which is a planar valve, including a valve plate seat and two valves installed in the valve seat The seat plate, the two valve seat plates are provided with valve holes, and a sealing ring is embedded in the valve seat plate, and a reciprocating shutter is installed between the two valve seat plates, and the shutter reciprocates under the action of the pressure cylinder The movement closes the opening of the valve, and the tight fit of the sealing ring and the ram can seal the can body, which is beneficial for vacuuming. The valve plate and the sealing ring are surface-sealed. During the operation process, there is a large displacement between the ram and the sealing ring, and the sealing ring wears faster, and the sealing ring needs to be replaced frequently, which reduces the working efficiency of the vacuum spraying machine. How to design a vacuum sprayer with good sealing performance, good spraying effect and low maintenance frequency is an urgent problem to be solved.

Summary of the invention

The object of the present invention is to provide a vacuum sprayer with good sealing performance, good spraying effect and low maintenance frequency in view of the deficiencies of the prior art.

In order to achieve the above object, the technical solution adopted by the vacuum sprayer of the present invention is:

A vacuum spraying machine comprises a tank body and a stirrer disposed inside the tank body, the auger is connected with the top of the tank body, a circular discharge port is arranged at the bottom of the tank body, and a valve is installed at the discharge port The top of the valve is a cone body, the cone tip points to the auger, the cone body is coaxial with the auger, the cone surface of the cone body is matched with the circular discharge port, and the spiral blade of the auger extends spirally along the cone surface. To the bottom of the tank, a telescopic device for driving the discharge valve up and down is arranged at the bottom of the valve. The taper body and the circular discharge port can be well matched. Under the action of the telescopic device, the discharge port can be sealed and compacted. During the vacuum process of the tank body, the valve can be tightly packed and discharged under the action of negative pressure. The mouth fits, the greater the negative pressure, the greater the suction force. The spiral blade of the auger spirals along the cone surface of the cone to the bottom of the tank, and the particles at the bottom of the tank can be The material is scraped and transported to the upper side of the tank to be in full contact with the atomized droplets, so that the particulate material is completely sprayed.

The taper tip of the valve is provided with a guide post coaxial with the taper body, and the main shaft of the auger is provided with a guide hole that cooperates with the guide post. The guide rod of the valve is matched with the guide hole of the main shaft driven by the telescopic device, so that the conical body and the main shaft are arranged coaxially, so that the spiral blade on the outer side of the conical body is matched with the conical body, and the spiral blade which appears due to the misalignment is avoided. Damaged, improving the accuracy of valve positioning.

A flange is arranged at the discharge opening at the bottom of the tank, and the flange is provided with an inner tapered surface that cooperates with the valve cone body. The inner tapered surface of the flange not only can be closely matched with the tapered body to improve the sealing performance but also to guide the tapered body.

The inner tapered surface of the flange is fitted with a sealing ring. The seal can further seal the gap between the valve and the discharge port.

The bottom side of the tapered body of the valve is fitted with a soft sleeve that encloses the telescopic device therein to prevent material from entering. The soft sleeve protects the telescopic device from material, liquid and dust, which causes the telescopic device to malfunction.

The top of the telescopic device is hinged to the cone body. The conical body and the telescopic device are connected by means of an articulated manner, which facilitates the alignment of the taper body with the discharge port and the main shaft, thereby improving the sealing performance.

The top of the telescopic device is hinged at the inner corner of the cone.

The auger is connected to the top of the can body by a centering mechanism. Through the centering mechanism, the axis of the spindle of the auger can be fine-tuned so that the spindle can be coaxial with the cone body, and the spiral blade and the cone body are closely fitted, thereby improving the accuracy of the installation and offsetting the error in manufacturing.

The aligning mechanism is a spherical aligning mechanism, and the mounting sleeve of the main shaft shaft and the can body are matched by a spherical surface to realize alignment of the main shaft. The spherical fit can universally adjust the axis of the auger spindle and improve the range of centering.

The spherical aligning mechanism comprises a fixing seat mounted on the top of the tank body, the fixing seat is provided with a concave spherical surface, the outer side of the main shaft of the auger is connected with a mounting sleeve, and the end of the mounting sleeve is provided with a convex spherical surface matched with the concave spherical surface, The mounting sleeve and the fixing base are connected by bolts, and a driving device for powering the main shaft is arranged at the top of the mounting sleeve.

Compared with the prior art, the invention has the following advantages:

The valve at the bottom of the tank adopts a taper body, and the taper body opens and closes the discharge port through the lifting mechanism, and the taper body and the circular discharge port can be closely matched, thereby realizing the sealing of the tank body, and facilitating vacuuming of the tank body, the tank After the body generates negative pressure, the valve is placed at the discharge port under the action of the external air pressure, which further improves the sealing reliability, and the manufacturing precision meets certain requirements. The sealing effect can be achieved without using the sealing ring, and will not be sealed. The problem is to maintain the vacuum sprayer. The spiral blade extends spirally along the tapered surface to the bottom of the tank to scrape the material at the bottom of the tank and transport it to the top to make full contact with the atomized droplets. The particulate material is fully sprayed under the action of auger stirring and atomizing droplets. It ensures that all the granular materials are sprayed with liquid to achieve uniform spraying.

DRAWINGS

Figure 1 is a schematic view showing the structure of a vacuum sprayer.

Figure 2 is an enlarged view of the valve at A in Figure 1.

Figure 3 is an enlarged view of the centering mechanism at B in Figure 1.

detailed description

The invention will be further clarified with reference to the accompanying drawings and specific embodiments, which are to be construed as illustrative only and not to limit the scope of the invention. Modifications of equivalent forms are intended to fall within the scope defined by the appended claims.

As shown in FIG. 1 , a vacuum spraying machine includes a tank body 1 in which a vertical cylindrical branch pipe 3 is fixed by a plurality of support rods 2, and upper and lower ends of the branch pipe are respectively The top and bottom of the tank body are kept at a predetermined distance, and auger 4 is connected to the top of the tank body. The auger is disposed coaxially with the branching pipe and the branching pipe. The auger includes a main shaft 41 and a spiral blade 42 surrounding the outer side of the main shaft. A circular discharge port 5 is opened at the bottom of the tank body, a valve 6 is installed at the bottom of the discharge port, and a telescopic device 7 is installed at the bottom of the valve 6. The top of the valve is a taper body 61, and the expansion device and the cone body are The inner top is hinged, the cone body is coaxially arranged with the main shaft, and the spiral blade outside the main shaft spirally extends along the tapered surface of the cone body to the bottom of the tank body, and the spiral blade is arranged between the spiral blade and the spiral blade outside the cone body for reinforcement A support rod 421 of the bottom spiral blade strength (shown in Figure 2).

As shown in FIGS. 1 and 2, the valve includes a taper body 61. The bottom of the taper body is connected with a soft sleeve 62. The taper tip of the taper body is mounted with a guide post 63. The main shaft is provided with a guide hole 411 that cooperates with the guide post. The bottom of the dough body is hinged with a pressure cylinder as a telescopic device 7. The top of the pressure cylinder is hinged with the inner top corner 64 of the cone body, and the soft sleeve covers the base of the pressure cylinder and the fixed pressure cylinder to prevent foreign matter from entering. A ring plate 51 is welded to the discharge port 5 at the bottom of the tank body, and a flange 52 is connected to the bottom of the ring plate by bolts. The inner side of the flange is provided with an inner cone surface 53 matching the cone body, and the inner cone is surrounded. A sealing ring 54 is embedded in the surface. The auger's helical blade 42 extends helically along the tapered surface of the cone to the bottom of the can.

As shown in FIG. 1 and FIG. 3, a ring plate 11 is welded to the top of the can body 1, and a fixing seat 12 is mounted on the ring plate. The upper side of the fixing seat is provided with a concave spherical surface 121, and the upper side of the main shaft is axially connected. There is a mounting sleeve 412. The bottom of the mounting sleeve is provided with a convex spherical surface 413 matched with the concave spherical surface. The concave spherical surface and the convex spherical surface cooperate to realize the alignment of the main shaft, and after adjusting the guiding shaft of the main shaft and the valve, the bolt is fixedly mounted. The sleeve and the fixing seat are embedded with a sealing ring 13 between the mounting sleeve and the fixing seat, and a sealing ring 13 is embedded between the fixing seat and the annular plate. A drive unit 8 for powering the main shaft is connected to the top of the mounting sleeve, and the drive unit can be a reduction motor, and the output shaft of the reduction motor is connected to the main shaft.

Claims

A vacuum spraying machine comprises a tank body and a stirrer disposed inside the tank body, the auger is connected with the top of the tank body, a circular discharge port is arranged at the bottom of the tank body, and a valve is installed at the discharge port The utility model is characterized in that: the top of the valve is a cone body, the cone tip points to the auger, the cone surface is coaxial with the auger, the cone surface of the cone body is matched with the circular discharge port, and the spiral blade of the auger is along The conical spiral extends to the bottom of the tank, and a telescopic device for driving the discharge valve up and down is provided at the bottom of the valve.
The vacuum sprayer according to claim 1, wherein the taper tip of the valve is provided with a guide post coaxial with the taper body, and the main shaft of the auger is provided with a guide hole that cooperates with the guide post.
The vacuum spraying machine according to claim 1, wherein a flange is disposed at a discharge opening at the bottom of the can body, and the flange is provided with an inner tapered surface that cooperates with the valve cone body.
The vacuum sprayer according to claim 3, wherein the inner tapered surface of the flange is fitted with a sealing ring.
The vacuum sprayer of claim 1 wherein the bottom side of the tapered body of the valve is fitted with a soft sleeve that encloses the telescoping device therein to prevent material from entering.
A vacuum sprayer according to claim 1 wherein the top of said telescoping device is hinged to the cone.
A vacuum sprayer according to claim 6 wherein the top of the telescopic device is hinged at the inner corner of the cone.
A vacuum sprayer according to claim 1 wherein said auger is coupled to the top of the can body by a centering mechanism.
The vacuum spraying machine according to claim 7, wherein the centering mechanism is a spherical centering mechanism, and the mounting sleeve of the spindle shaft and the can body are spherically matched to realize alignment of the spindle.
The vacuum spraying machine according to claim 8, wherein the spherical centering mechanism comprises a fixing seat mounted on the top of the tank body, the fixing seat is provided with a concave spherical surface, and the outer side of the main shaft of the auger is connected with a mounting sleeve, The end of the mounting sleeve is provided with a convex spherical surface that cooperates with the concave spherical surface, and the mounting sleeve and the fixing base are connected by bolts, and a driving device for powering the main shaft is arranged at the top of the mounting sleeve.