CN212187901U

CN212187901U - Vacuum defoaming machine

Info

Publication number: CN212187901U
Application number: CN202020644848.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Wuxi Lead Intelligent Equipment Co Ltd
Current assignee: Jiangsu hydrogen guide intelligent equipment Co.,Ltd.
Priority date: 2020-04-24
Filing date: 2020-04-24
Publication date: 2020-12-22
Anticipated expiration: 2030-04-24

Abstract

The utility model relates to a vacuum defoaming machine, which comprises a vacuum tank, a transmission shaft and a rotary defoaming mechanism. The rotary defoaming mechanism comprises a throwing disc, an annular screen and a baffle, and a flowing gap through which the common slurry flows is formed between the baffle and the throwing disc. The throwing disc and the annular screen mesh rotate at a high speed under the driving of the transmission shaft, slurry to be defoamed, which is introduced through the feed inlet, is led to the outer side from the middle part of the annular screen mesh under the action of centrifugal force, bubbles in the slurry are split into a plurality of more tiny bubbles under the extrusion of filtering holes in the annular screen mesh and are broken under a vacuum environment, so that air in the bubbles is separated from the slurry. Further, the slurry passing through the ring screen flows into the flow-through slits and spreads out to form a fluid film under the action of centrifugal force. At this time, the bubbles in the slurry can be more fully contacted with the vacuum environment, so that the bubbles can be rapidly broken under the action of the internal and external pressure difference. Therefore, the vacuum defoaming machine can sequentially realize two defoaming procedures, so that the defoaming efficiency is obviously improved.

Description

Vacuum defoaming machine

Technical Field

The utility model relates to a thick liquids processing technology field, in particular to vacuum defoaming machine.

Background

The defoaming machine is a device for separating bubbles in liquid fluid from the fluid, and is mainly applied to the fields of fine chemical materials, cosmetics industry, printed electronic materials, food and medicine, electronic packaging materials, new energy materials and the like. Such as inks, cosmetics, silica gels, fruit juices, lithium battery pastes, hydrogen fuel cell pastes.

The traditional defoaming machine generally adopts a stirring mode to realize defoaming. However, in the case of a slurry having a large viscosity, such as an electrolytic solution, the defoaming effect is not satisfactory, and it is necessary to perform defoaming several times. Therefore, the time required for de-bubbling the slurry is longer, and even a batch de-bubbling form is required, resulting in inefficiency.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a vacuum defoaming machine capable of improving defoaming efficiency in order to solve the problem of low efficiency of the conventional defoaming machine.

A vacuum debubbling machine comprising:

the vacuum tank is provided with a feeding hole and a discharging hole;

the transmission shaft is driven by the driving piece to rotate and penetrates through the vacuum tank; and

the rotary defoaming mechanism is accommodated in the vacuum tank and connected with the transmission shaft, the rotary defoaming mechanism comprises a throwing disk, an annular screen and a baffle, and the baffle is covered on the throwing disk and the annular screen to form a circulation gap with the throwing disk;

the slurry flowing in through the feed inlet can be guided to the middle part of the annular screen, and the throwing disc and the annular screen can rotate along with the transmission shaft.

In one embodiment, the vacuum tank comprises a tank body and a tank cover, the tank cover is openably and hermetically matched with the tank body, the feed port is formed in the tank cover, and the transmission shaft penetrates through the tank cover.

In one embodiment, the tank further comprises a frame and a rotating mechanism, the tank body is fixed on the frame, one end of the rotating mechanism is mounted on the frame, the other end of the rotating mechanism is fixedly connected with the tank cover, and the rotating mechanism can drive the tank cover to lift and rotate relative to the tank body so as to open or close the tank body.

In one embodiment, the tank cover is provided with a plurality of operation holes and a transparent window.

In one embodiment, a sleeve is formed in the middle of the throwing disk, the sleeve is sleeved with the transmission shaft, and the annular screen is sleeved and fixed on the sleeve.

In one embodiment, the flail disc and the baffle are both conical or truncated cone shaped.

In one embodiment, a transition cavity communicated with the flow gap is formed at one end of the baffle, and the annular screen is accommodated in the transition cavity and is arranged at an interval with the inner wall of the transition cavity.

In one embodiment, the device further comprises a discharge screw pump, and the discharge screw pump is communicated with the discharge hole.

In one embodiment, the vacuum pump further comprises a discharge control valve arranged at the discharge port, a liquid level sensor positioned in the vacuum tank, and a controller in communication connection with the discharge control valve and the liquid level sensor, wherein the controller closes the discharge control valve when the liquid level sensor detects that the liquid level in the vacuum tank is lower than a first preset value.

In one embodiment, the vacuum tank further comprises a feeding control valve arranged at the feeding hole, and the controller closes the feeding control valve when the liquid level sensor detects that the liquid level in the vacuum tank is higher than a second preset value.

Above-mentioned vacuum defoaming machine, throwing away dish and ring screen rotate at a high speed under the drive of transmission shaft, and the thick liquids of treating the deaeration of leading-in through the feed inlet under the effect of centrifugal force, lead to the outside by ring screen middle part, and the bubble in the thick liquids splits into a plurality of more tiny bubbles under the extrusion of annular screen inside filtration pore to break under vacuum environment, so that the air in the bubble breaks away from the thick liquids. Further, the slurry passing through the ring screen flows into the flow-through slits and spreads out to form a fluid film under the action of centrifugal force. At this time, the bubbles in the slurry can be more fully contacted with the vacuum environment, so that the bubbles can be rapidly broken under the action of the internal and external pressure difference. Therefore, the vacuum defoaming machine can sequentially realize two defoaming procedures, so that the defoaming efficiency is obviously improved.

Drawings

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

FIG. 1 is a schematic view of a vacuum defoaming machine according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural diagram of the vacuum degassing machine shown in FIG. 1 in another operating state;

FIG. 3 is a top view of a vacuum tank in the vacuum debubbling machine of FIG. 1;

fig. 4 is a schematic structural diagram of a rotary defoaming mechanism in the vacuum defoaming machine shown in fig. 1.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, a vacuum defoaming machine 100 according to a preferred embodiment of the present invention includes a vacuum tank 110, a transmission shaft 120 and a rotary defoaming mechanism 130.

The vacuum vessel 110 may be formed of a metal material, and has a generally cylindrical shape. Referring to fig. 3, the vacuum tank 110 is provided with a feed port 101 and a discharge port 102. The rotary defoaming mechanism 130 is accommodated in the vacuum tank 110 and can be rotated by the driving shaft 120. The driving shaft 120 is inserted into the vacuum tank 110 and can be rotated by the driving member 300. The driving member 300 is generally a motor and is fixedly installed at the outside of the vacuum tank 110.

The slurry to be defoamed flows in from the feeding hole 101, is defoamed by the rotary defoaming mechanism 130, and is discharged from the discharging hole 102. The vacuum defoaming machine 100 can be applied to a battery production line, and the slurry to be defoamed is referred to as a battery fluid. When the vacuum defoaming machine 100 operates, the vacuum tank 110 is maintained in a vacuum environment. Therefore, the vacuum tank 110 is generally fixedly provided with a vacuum-pumping device 200.

It should be noted that the vacuum pumping device 200 and the driving member 300 can be used as the intrinsic components of the vacuum defoaming device 100, and are always fixed outside the vacuum tank 110, and can also be used as the external components to be connected when defoaming operation is required.

In this embodiment, the vacuum defoaming machine 100 further includes a discharging screw pump 160, and the discharging screw pump 160 is communicated with the discharging port 102. The slurry discharged from the discharge port 102 flows to the next station under the driving of the discharge screw pump 160, so that the slurry defoaming process is connected with the battery processing flow.

In addition, the discharge screw pump 160 has a smooth flow rate and a small pressure pulsation, and does not form a vortex when transferring the slurry, thereby preventing the defoamed slurry from being re-foamed due to air mixing. In addition, the discharge screw pump 16 adopts a screw mode to drive feeding, and even if the viscosity of the slurry is high, the slurry is not easy to block.

Specifically, in this embodiment, the vacuum defoamers 100 further comprise a frame 140. The frame 140 is used for supporting, the vacuum tank 110 is mounted on the frame 140, and the discharging screw pump 160 is also fixed on the frame 140. It should be appreciated that in other embodiments, the vacuum tank 110 and the discharge screw pump 160 may be mounted directly to the platen of the battery production line without the frame 140.

In order to facilitate the movement of the vacuum defoaming machine 100, the bottom of the frame 140 is further provided with a roller 141. The rollers 141 may be gimbaled wheels, directional wheels, or a combination thereof. Also, the roller 141 is provided with a brake. After the vacuum defoamers 100 are moved in place, the brakes are stepped on to position the vacuum defoamers.

Specifically, in the present embodiment, the vacuum tank 110 includes a tank body 111 and a tank cover 112, and the tank cover 112 is openably and hermetically fitted to the tank body 111. The lid 112 seals the tube 111 during the defoaming operation. After the tank cover 112 is opened, the interior of the vacuum tank 110 and the rotary degassing mechanism 130 can be cleaned conveniently.

The feed inlet 101 is arranged on the tank cover 112, the discharge outlet 102 is arranged at the bottom of the tank body 111, and the tank body 111 is fixed on the frame 140. Specifically, the shaft 120 is inserted through the cover 112. The cover 112 may be provided with a bearing seat through which the shaft 120 is rotatably mounted. Furthermore, the connection between the drive shaft 120 and the vacuum canister 110 may be sealed using a shaft seal in order not to break the vacuum of the vacuum canister 110.

In order to facilitate the defoamed slurry to rapidly flow to the discharge port 102, the bottom of the tank 111 is funnel-shaped. In addition, in order to monitor the pressure inside the tank 111 in real time, the discharge port 102 is further provided with a pressure sensor 113.

Further, referring to fig. 3 again, in the present embodiment, a transparent window 1122 is disposed on the can lid 112. The lid 112 may be formed with a through hole and then covered with a transparent cover such as glass or resin to form a transparent window 1122. The inside of the vacuum tank 110 can be observed through the transparent window 1122 without opening the lid 112, which is advantageous for continuously performing the defoaming process.

The cover 112 is further provided with a vacuum hole 105, a vacuum breaking hole 106, and a sensor hole 107. The vacuum-pumping device 200 is connected to the vacuum-pumping hole 105, and the vacuum-breaking hole 106 is connected to the atmosphere through a valve. Of course, during normal debubbling operation, the valve of the vacuum breaking hole 106 should be in a closed state. The sensor holes 107 may allow sensors such as liquid level sensors, temperature sensors, etc. to extend into the vacuum tank 110 to facilitate obtaining various parameters within the vacuum tank 110.

Further, in the present embodiment, the vacuum defoaming machine 100 further includes a rotating mechanism 150, one end of the rotating mechanism 150 is mounted on the frame 140, and the other end is fixedly connected to the cover 112, and the rotating mechanism 150 can drive the cover 112 to lift and rotate relative to the can 111, so as to open or close the can 111.

As shown in fig. 1, during the defoaming operation, the lid 112 is pushed down by the rotating mechanism 150, so as to close the can body 111. As shown in fig. 2, when the rotary defoaming mechanism 130 needs to be cleaned after the defoaming operation is completed, the rotating mechanism 150 lifts the tank cover 112, thereby opening the tank 111. Also, the cover 112 is lifted up to a certain height with respect to the can body 111 while being tilted to a certain degree. At this time, the rotary defoaming mechanism 130 connected to the tank cover 112 is also lifted to a certain height and at least partially exposed outside the tank 111, so that the rotary defoaming mechanism 130 is more conveniently cleaned.

Specifically, the rotating mechanism 150 includes a telescopic cylinder 151 and a lever 153, one end of the lever 153 is connected to the cover 112, and the other end is connected to the telescopic cylinder 151. When the telescopic cylinder 151 extends, the lever 153 is pressed down, so that the tank cover 112 is driven to close the tank body 111; when the telescopic cylinder 151 retracts, the lever 153 tilts, so as to drive the cover 112 to lift corresponding to the can 111 and rotate a certain angle, so that the can 111 is opened.

Referring to fig. 4, the rotary defoaming mechanism 130 includes a throwing plate 131, an annular screen 132 and a baffle 133.

Wherein:

the material of the throwing disk 131 and the annular screen 132 can be metal, plastic or resin. The slinger 131 may be plate-like or substantially plate-like, with the annular screen 132 effecting filtration radially thereof. The rotary defoaming mechanism 130 is in transmission connection with the transmission shaft 120. Also, the slinger 131 and the ring screen 132 may rotate with the drive shaft 120. Therefore, when the transmission shaft 120 rotates at a high speed, centrifugal force is generated on both the throwing disk 131 and the ring screen 132.

The slinger 131 and the ring screen 132 may be coupled directly or indirectly to the drive shaft 120. Specifically, in the present embodiment, a sleeve 1312 is formed in the middle of the throwing disk 131, the sleeve 1312 is sleeved with the transmission shaft 120, and the ring screen 132 is sleeved and fixed on the sleeve 1312.

The sleeve 1312 may be integrally formed with the other portion of the throwing disk 131, and the throwing disk 131 and the transmission shaft 120 may be more reliably coupled by being sleeved with the transmission shaft 120. Furthermore, the annular screen 132 is fixed by a sleeve 1312 so as to be coaxially arranged with the thrower 131. Therefore, during the high-speed rotation, there is no mutual centrifugal effect between the throwing disk 131 and the ring screen 132, so that the relative position between the two is stable.

The baffle 133 covers the throwing disk 131 and the ring screen 132 and cooperates with the throwing disk 131 to form a flow gap 103 between the throwing disk 131 and the baffle 133. The baffle 133 may be attached to the spin chuck 131 so as to rotate together with the spin chuck 131, or may be attached to the vacuum tank 110 so as to be fixed to the vacuum tank 110. Specifically, in this embodiment, the baffle 133 is fixed relative to the vacuum tank 110 and does not rotate with the flail 131.

The slurry flowing in through the inlet 101 may be directed to the middle of the ring screen 132. Specifically, a flow guide tube 1121 is further disposed inside the tank cover 112. One end of the flow guide tube 1121 is abutted against the feed inlet 101, and the other end thereof is extended into the middle of the ring screen 132, thereby guiding the slurry into the ring screen 132. It should be noted that in other embodiments, the flow guiding tube 1121 may be omitted and the feed inlet 101 is directly aligned with the middle portion of the ring screen 132, so that the slurry flows into the middle portion of the ring screen 132 by itself.

During the defoaming operation, the can lid 112 closes the can body 111, and the vacuum defoaming machine 100 is in the state shown in fig. 1. Then, the vacuum tank 110 is evacuated to form a negative pressure, and the throwing disk 131 and the ring screen 132 are rotated at a high speed by the driving shaft 120. The slurry to be defoamed is introduced into the middle of the ring screen 132 through the feed inlet 10. Under the influence of centrifugal force, the slurry passes from the middle of the ring screen 132 to the outside. During the transfer of the slurry from the inside to the outside, the air bubbles inside the annular screen 132 are broken into a plurality of smaller air bubbles by the extrusion of the filtering holes therein, and are broken under a vacuum environment, so that the air in the air bubbles is separated from the slurry.

Further, the slurry passing through the ring screen 132 flows into the flow-through slits 103 and spreads on the surface of the flail 131 by the centrifugal force to form a fluid film. At this time, the slurry spreads into an extremely thin film layer, and bubbles in the slurry are more sufficiently brought into contact with the vacuum environment. Under the action of the pressure difference between the inside and the outside, the residual bubbles are quickly broken to release air. The slurry after the two defoaming processes is thrown out from the end of the flow gap 103 by the centrifugal force, and finally discharged out of the vacuum tank 110 through the discharge port 102.

In this embodiment, a transition chamber 104 communicating with the flow gap 103 is formed at one end of the baffle 133, and the annular screen 132 is received in the transition chamber 104 and spaced apart from the inner wall of the transition chamber 104.

Specifically, one end of the baffle 133 may form a cylindrical structure and be enclosed by the cylindrical structure as the transition chamber 104. The transition chamber 104 may function to house the ring screen 132, facilitating installation while preventing slurry thrown off the ring screen 132 from splashing around. Additionally, a gap exists between the annular screen 132 and the inner wall of the transition chamber 104. Thus, when the slurry is thrown by centrifugal force from the side of the ring screen 132, it does not immediately enter the flow-through slits 103, but rather remains in the transition chamber 104 for a short period of time.

Also, because the slushed slurry is extruded through the annular screen 132 and has a relatively high velocity, some atomization may occur in the transition chamber 104. Therefore, the residual bubbles in the slurry can be more fully contacted with the vacuum environment, so that the defoaming effect is further improved.

Further, in this embodiment, the rotary defoaming mechanism 130 further includes an upper plate 134. An upper platen 134 covers one end of the baffle 133 to cover the transition chamber 104. Wherein, the draft tube 1121 passes through the upper platen 134. When the slurry is introduced into the ring screen 132 through the flow guide tube 1121, the slurry is prevented from splashing outward due to the shielding of the upper platen 134.

The position of the upper platen 134 may remain fixed relative to the vacuum tank 111. Therefore, when the flail 131 and the ring screen 132 rotate at a high speed, the upper press plate 134 does not rotate, so as to ensure that the positions of the guide pipe 1121 and the upper press plate 134 are kept unchanged, which is beneficial for feeding, and obviously, the upper press plate 134 and the baffle 133 can also rotate integrally with the flail 131 and the ring screen 132. At this time, an annular feeding groove (not shown) may be formed on the surface of the upper platen 134, the annular feeding groove extending around the circumference of the driving shaft 120, and the guiding pipe 1121 extending into the annular feeding groove. Therefore, the slurry to be defoamed can be ensured to be smoothly fed.

Specifically, in the present embodiment, the throwing disk 131 and the baffle 133 are both conical or truncated cone-shaped. Thus, the surface of the throwing disk 131 is an inclined surface, and the slurry in the flowing gap 103 can flow under the action of self gravity, so that the spreading effect is better. Meanwhile, the inclined surface does not enable the formed film slurry to rapidly flow to the bottom of the vacuum tank 110, and the contact time of the slurry film and the vacuum environment can be prolonged.

In this embodiment, the vacuum defoaming machine 100 further includes a discharge control valve (not shown), a liquid level sensor (not shown), and a controller (not shown). The discharge control valve is arranged at the discharge port 102; a liquid level sensor is located within the vacuum tank 110 to detect the liquid level within the vacuum tank 110. Wherein, level sensor and level sensor all are connected with the controller communication. Moreover, the controller closes the discharge control valve when the liquid level in the vacuum tank 110 is below a first preset value.

The controller may be a single chip or a remote computer, and the liquid level sensor may extend into the vacuum tank 110 through the sensor hole 107. The first preset value is a manually set level value. Since the liquid level in the vacuum tank 110 is lower than this level, the discharge control valve is closed. Thus, the vacuum tank 110 may always remain with a portion of the slurry. Thus, under the sealing action of the slurry, a sealed negative pressure environment can be always maintained in the vacuum tank 110, so that the vacuum defoaming machine 100 can continuously work, and online defoaming is realized.

Further, in this embodiment, the vacuum defoaming machine 100 further includes a feeding control valve (not shown) disposed at the feeding port 101, and the controller closes the feeding control valve when the liquid level sensor detects that the liquid level in the vacuum tank 110 is higher than the second preset value.

The second preset value is also a manually set level value and is greater than the first preset value. Since the feed control valve is closed when the liquid level in the vacuum tank 110 is higher than the second preset value, the liquid level in the vacuum tank 110 will not rise continuously, and thus can be maintained below the second preset value all the time. Thus, the slurry can be prevented from submerging the rotary defoaming mechanism 130, and the defoaming process can be always smoothly performed.

When the liquid level in the vacuum tank 110 is between the first preset value and the second preset value, the debubbling process is normally performed. At this time, the feeding control valve and the discharging control valve are both opened, the slurry to be defoamed continuously flows into the vacuum tank 110 through the feeding port 101, and the defoamed slurry is continuously discharged from the discharging port 102.

The vacuum defoaming machine 100, the throwing disc 131 and the ring screen 132 rotate at a high speed under the driving of the transmission shaft 120, the slurry to be defoamed, which is introduced through the feed inlet 101, is led to the outside from the middle part of the ring screen 132 under the action of centrifugal force, and the bubbles in the slurry are broken into a plurality of smaller bubbles under the extrusion of the filtering holes in the ring screen 132 and are broken in a vacuum environment, so that the air in the bubbles is separated from the slurry. Further, the slurry passing through the ring screen 132 flows into the flow-through slits 103 and spreads out to form a fluid film by centrifugal force. At this time, the bubbles in the slurry can be more fully contacted with the vacuum environment, so that the bubbles can be rapidly broken under the action of the internal and external pressure difference. As can be seen, the vacuum defoaming machine 100 can sequentially implement two defoaming processes, thereby significantly improving the defoaming efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A vacuum defoaming machine, comprising:

the vacuum tank is provided with a feeding hole and a discharging hole;

2. The vacuum defoamation machine of claim 1, wherein the vacuum tank comprises a tank body and a tank cover, the tank cover is openably and sealingly engaged with the tank body, the feed port is opened in the tank cover, and the drive shaft is inserted through the tank cover.

3. The vacuum defoaming machine according to claim 2, further comprising a frame and a rotating mechanism, wherein the tank body is fixed on the frame, one end of the rotating mechanism is mounted on the frame, and the other end of the rotating mechanism is fixedly connected with the tank cover, and the rotating mechanism can drive the tank cover to lift and rotate relative to the tank body so as to open or close the tank body.

4. The vacuum defoamation machine of claim 2, wherein the canister cap is provided with a plurality of handling holes and a transparent window.

5. The vacuum defoaming machine according to claim 1, wherein a sleeve is formed in the middle of the throwing plate, the sleeve is sleeved with the transmission shaft, and the annular screen is sleeved and fixed on the sleeve.

6. The vacuum defoamation machine of claim 1, wherein the flail disk and the baffle are both conical or truncated cone shaped.

7. The vacuum defoamation machine of claim 1, wherein a transition chamber is formed at one end of the baffle plate and is in communication with the flow gap, and the annular screen is received in the transition chamber and is spaced from an inner wall of the transition chamber.

8. The vacuum defoaming machine according to claim 1, further comprising a discharge screw pump, wherein the discharge screw pump is communicated with the discharge port.

9. The vacuum defoaming machine according to claim 1, further comprising a discharge control valve disposed at the discharge port, a liquid level sensor located in the vacuum tank, and a controller in communication with the discharge control valve and the liquid level sensor, wherein the controller closes the discharge control valve when the liquid level sensor detects that the liquid level in the vacuum tank is lower than a first preset value.

10. The vacuum defoamation machine of claim 9, further comprising a feed control valve disposed at the feed inlet, wherein the controller closes the feed control valve when the level sensor detects that the liquid level in the vacuum tank is above a second preset value.