Vacuum defoaming machine

Abstract

The utility model provides a vacuum defoaming machine which comprises a defoaming tank, the defoaming tank is provided with a vacuum pipe used for vacuumizing an inner cavity of the defoaming tank, the bottom of the defoaming tank is provided with a discharging port communicated with the inner cavity of the defoaming tank, a rotatable dispersing disc is arranged at the position, close to the top of the inner cavity, of the defoaming tank, and at least one group of dispersing plates extending upwards and arranged on the upper surface of the dispersing disc is arranged on the upper surface of the dispersing disc. The barrel-shaped screen is concentric with the rotation center of the dispersion disc, and a plurality of screen holes are formed in the barrel wall of the barrel-shaped screen; when the plurality of groups of cylindrical screens are arranged, all the cylindrical screens are concentrically arranged in an offset manner, and the size of screen holes of the cylindrical screen close to the center side of the dispersion disc is larger than that of screen holes of the cylindrical screen close to the outer edge of the dispersion disc; the defoaming tank is further provided with a feeding pipe, and the outlet end of the feeding pipe is located above the dispersing disc and close to the center of the dispersing disc. The device has the advantages of high defoaming efficiency, suitability for materials with different viscosities, convenience in cleaning and capability of realizing on-line continuous defoaming.

Description

Technical Field

[0001] The utility model relates to the field of degassing equipment, in particular to a vacuum degassing machine. Background Art

[0002] In the production process of conventional liquid and slurry materials, the bubbles dissolved in the liquid precipitate or the bubbles introduced into the air will lead to problems such as reduced specific gravity of the product, increased volume, affecting metering, and uneven appearance. Therefore, it is necessary to use equipment to remove the bubbles in the material. At present, the market mostly uses vacuum centrifuges, filters, static storage and other equipment or processes to achieve degassing effects, which have disadvantages such as unstable degassing effects and low efficiency. At the same time, for high-viscosity materials, it is difficult to remove bubbles, and high-strength shearing equipment is required. The current existing equipment does not have these capabilities. There are also difficulties in cleaning the equipment, and the hygienic requirements cannot be met. The actual process production often requires continuous online operation to maintain a continuous supply of materials, so it is difficult for traditional degassing equipment to achieve continuous online production. Utility Model Content

[0003] Based on the above problems, the utility model aims to provide a vacuum degassing machine which has high degassing efficiency, is suitable for materials of different viscosities, is easy to clean and can realize online continuous degassing.

[0004] In view of the above problems, the following technical solutions are provided: a vacuum degassing machine, comprising a degassing tank, wherein the degassing tank is provided with a vacuum tube for evacuating the inner cavity thereof, a discharge port connected to the inner cavity of the degassing tank is provided at the bottom of the degassing tank, a rotatable dispersion disk is provided near the top of the inner cavity of the degassing tank, the upper surface of the dispersion disk is provided with at least one group of cylindrical screens extending upward and arranged concentrically with the rotation center of the dispersion disk, and a plurality of sieve holes are provided on the cylinder wall of the cylindrical screen; when there are multiple groups of cylindrical screens, the cylindrical screens are concentrically offset with each other, and the sieve hole size of the cylindrical screen near the center side of the dispersion disk is larger than the sieve hole size of the cylindrical screen near the outer edge of the dispersion disk; the degassing tank is also provided with a feed pipe, and the outlet end of the feed pipe is located above the dispersion disk and near the center of the dispersion disk.

[0005] In the above structure, the vacuum tube is used to evacuate the degassing tank to generate negative pressure. The degassing material is input to the dispersion disk through the feed pipe. The centrifugal force generated by the rotation of the dispersion disk evenly spreads the material on the dispersion disk and moves centrifugally around to reach the inner wall of the cylindrical screen. The degassing material passes through the sieve holes under the action of centrifugal force and is sheared and dispersed by the sieve holes, so that the bubbles in the material burst and escape. Under the action of the vacuum system, the bubbles in the material are accelerated to escape and are quickly extracted, thereby obtaining a uniform degassing material product. The degassing material will be thrown to the inner wall of the degassing tank, and then gathered at the bottom of the degassing tank and extracted in real time through the discharge port.

[0006] The utility model is further configured that a centrifugal motor for driving the dispersion disk to rotate is provided on the top of the degassing tank.

[0007] In the above structure, the motor is directly driven, the operation is more stable, the efficiency is higher, and the structure is compact, which is suitable for the processing of high-viscosity materials. The rotation of the dispersion disk is controlled by a centrifugal motor with variable frequency speed regulation, which is convenient for dealing with the degassing of materials with different viscosities and has good energy-saving effect.

[0008] The utility model is further configured as follows: the degassing tank comprises a tank body and a cover body, a tank mouth is provided on the top of the tank body, the cover body is buckled on the tank mouth, and the discharge port is located at the bottom of the tank body; the centrifugal motor is located on the outside of the top of the cover body, the dispersion disk and the cylindrical screen are located on the inside of the cover body; the feed pipe and the vacuum tube are located on the cover body.

[0009] In the above structure, a sealing ring is provided between the tank mouth and the cover body for sealing during vacuuming; the feed pipe and the vacuum pipe are located on the cover body, which ensures the compactness and rationality of the overall structure, is conducive to increasing the upper height of the dispersion plate, and indirectly increases the effective storage volume of the tank body.

[0010] The utility model is further configured that a material mixing plate is provided above the dispersion plate, which is spaced apart from the dispersion plate and arranged concentrically with the dispersion plate. The material mixing plate is fixed relative to the dispersion plate, and the outlet end of the feed pipe is located below the material mixing plate.

[0011] In the above structure, when the deaerated material is discharged from the outlet end of the feed pipe, it is easy for the viscosity problem to cause it to be unable to be spread on the mixing plate and be centrifugally thrown onto the cylindrical screen, causing dynamic balance failure and vibration. The provision of a dispersion plate can effectively reduce the thickness of the deaerated material when it is discharged from the outlet end, so that it can contact the mixing plate more evenly.

[0012] The utility model is further configured that the outer edge of the material mixing disk is provided with a disk wall extending toward the upper surface of the dispersion disk and having a gradually increasing diameter, and the end of the disk wall is spaced from the upper surface of the material mixing disk and the inner wall of the cylindrical screen.

[0013] In the above structure, the disc wall can further reduce the thickness of the degassing material, so that the material can be spread more evenly in the circumferential direction of the material leveling disc.

[0014] The utility model is further configured such that the tank body and the cover body are opened and closed by an opening and closing mechanism.

[0015] In the above structure, the opening and closing mechanism can be controlled by a hinge or an electric push rod or an oil cylinder or a pneumatic cylinder.

[0016] The utility model is further configured that the cylindrical screen is detachably connected to the dispersion disk.

[0017] In the above structure, the cylindrical screen with different mesh sizes can be replaced according to the properties of the degassing material (viscosity, etc.).

[0018] The utility model is further configured that the degassing tank is also provided with a lower flushing nozzle and an upper flushing nozzle, the lower flushing nozzle is located below the dispersion plate, and the upper flushing nozzle is located above the dispersion plate and the cylindrical screen.

[0019] In the above structure, the lower flushing nozzle and the upper flushing nozzle are cip cleaning balls, which meet the needs of online cleaning.

[0020] The utility model is further configured that the upper flushing nozzles are divided into two groups, which are arranged 180 degrees apart from each other in the rotation direction of the dispersion disk.

[0021] In the above structure, there are two groups of upper flushing nozzles to ensure that when water flows into the dispersion disk and the cylindrical screen during online cleaning, resistance is generated at symmetrical positions, avoiding vibration due to different dynamic balance and ensuring 360-degree full coverage of cleaning.

[0022] The utility model is further configured that the top of the degassing tank is also provided with a vertical observation window, a lighting window, and a pressure gauge; and the side wall of the degassing tank body is provided with a material observation window.

[0023] In the above structure, the lighting window is used for lighting, so that the degassing state can be observed through the vertical observation window. The pressure gauge is used to display the vacuum degree. The material observation window can intuitively observe the storage amount of the degassing material in the degassing tank.

[0024] The beneficial effects of the utility model are as follows: the vacuum tube is used to evacuate the degassing tank to generate negative pressure, the degassing material is input to the dispersion disk through the feed pipe, the centrifugal force generated by the rotation of the dispersion disk evenly spreads the material on the dispersion disk, and centrifugally moves around to reach the inner wall of the cylindrical screen, the degassing material passes through the screen holes under the action of the centrifugal force, and is sheared and dispersed by the screen holes, so that the bubbles in the material are broken and escaped, and under the action of the vacuum system, the bubbles in the material are accelerated to escape and are quickly extracted, so as to obtain a uniform degassing material product The deaeration product will be thrown to the inner wall of the deaeration tank, and then gathered at the bottom of the deaeration tank and extracted in real time through the discharge port; 3 groups of cylindrical screens are installed on the dispersion plate, which can effectively improve the deaeration efficiency; it can be interconnected with PLC frequency conversion control, material level control, pump pressure control, vacuum control and other multi-functional systems, and under the control of PLC program, it runs fully automatically, with high degree of freedom of process parameters and wide range of applications; both the discharge port and the feed pipe adopt screw pump transportation mode, which can meet the needs of continuous production flow control and can also be used for cyclic batch production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the whole machine structure of the utility model.

[0026] Figure 2 It is a structural schematic diagram of the cover body of the utility model in an open state.

[0027] Figure 3 For this utility model Figure 1 Right view of .

[0028] Figure 4 It is a schematic diagram of the local cross-sectional structure of the utility model.

[0029] Figure 5 It is a partially cutaway three-dimensional structural schematic diagram of the cover body of the utility model from a first viewing angle.

[0030] Figure 6 It is a partially cutaway three-dimensional structural schematic diagram of the cover body of the utility model from a second viewing angle.

[0031] Figure 7 For this utility model Figure 1 Top view of the .

[0032] Meaning of the numbers in the figure: 10-frame; 11-degassing tank; 111-vacuum tube; 112-discharge port; 113-feeding pipe; 114-lower flushing nozzle; 115-upper flushing nozzle; 116-vertical observation window; 117-illumination window; 118-pressure gauge; 119-material observation window; 12-dispersion disk; 13-cylindrical screen; 131-sieve hole; 14-centrifugal motor; 15-tank body; 151-tank mouth; 16-cover body; 17-mixing disk; 171-disk wall; 18-opening and closing mechanism. DETAILED DESCRIPTION

[0033] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0034] refer to Figures 1 to 7 ,like Figures 1 to 7A vacuum degassing machine is shown, comprising a degassing tank 11 fixed on a frame 10, the degassing tank 11 is provided with a vacuum tube 111 for evacuating the inner cavity thereof, a discharge port 112 connected to the inner cavity thereof is provided at the bottom of the degassing tank 11, a rotatable dispersion disk 12 is provided near the top of the inner cavity of the degassing tank 11, at least one group of cylindrical screens 13 extending upward and arranged concentrically with the rotation center of the dispersion disk 12 is provided on the upper surface of the dispersion disk 12, and a plurality of sieve holes 131 are provided on the cylinder wall of the cylindrical screen 13; when there are multiple groups of cylindrical screens 13, the cylindrical screens 13 are arranged concentrically and offset to each other, and the size of the sieve holes 131 of the cylindrical screen 13 near the center side of the dispersion disk 12 is larger than the size of the sieve holes 131 of the cylindrical screen 13 near the outer edge of the dispersion disk 12; the degassing tank 11 is also provided with a feeding pipe 113, the outlet end of the feeding pipe 113 is located above the dispersion disk 12 and near the center of the dispersion disk 12.

[0035] In the above structure, the vacuum tube 111 is used to evacuate the degassing tank 11 to generate negative pressure. The degassing material is input to the dispersion disk 12 through the feed pipe 113. The centrifugal force generated by the rotation of the dispersion disk 12 evenly spreads the material on the dispersion disk 12 and centrifugally moves around to reach the inner wall of the cylindrical screen 13. The degassing material passes through the sieve hole 131 under the action of centrifugal force and is sheared and dispersed by the sieve hole 131, so that the bubbles in the material burst and escape. Under the action of the vacuum system, the bubbles in the material are accelerated to escape and are quickly extracted, thereby obtaining a uniform degassing material product. The degassing material will be thrown to the inner wall of the degassing tank 11, and then gathered at the bottom of the degassing tank 11 and extracted in real time through the discharge port 112.

[0036] In this embodiment, a centrifugal motor 14 for driving the dispersion disk 12 to rotate is provided on the top of the degassing tank 11 .

[0037] In the above structure, the motor is directly driven, the operation is more stable, the efficiency is higher, and the structure is compact, which is suitable for the processing of high-viscosity materials. The centrifugal motor 14 with variable frequency speed control controls the rotation of the dispersion disk 12, which is convenient for dealing with the degassing of materials with different viscosities and has good energy-saving effect.

[0038] In this embodiment, the degassing tank 11 includes a tank body 15 and a cover body 16, a tank mouth 151 is provided on the top of the tank body 15, the cover body 16 is buckled on the tank mouth 151, and the discharge port 112 is located at the bottom of the tank body 15; the centrifugal motor 14 is located on the outside of the top of the cover body 16, the dispersion disk 12 and the cylindrical screen 13 are located on the inside of the cover body 16; the feed pipe 113 and the vacuum tube 111 are located on the cover body 16.

[0039] In the above structure, a sealing ring (not shown in the figure) is provided between the tank mouth 151 and the cover body 16 for sealing during vacuuming; the feed pipe 113 and the vacuum tube 111 are located on the cover body 16, which ensures the compactness and rationality of the overall structure, is conducive to increasing the upper height of the dispersion plate 12, and indirectly increases the effective storage volume of the tank body 15.

[0040] In this embodiment, a material mixing plate 17 is provided above the dispersion plate 12 and is spaced apart from the dispersion plate 12 and arranged concentrically with the dispersion plate 12. The material mixing plate 17 is fixed relative to the dispersion plate 12, and the outlet end of the feed pipe 113 is located below the material mixing plate 17.

[0041] In the above structure, when the deaerated material is discharged from the outlet end of the feed pipe 113, it is easy for the viscosity problem to cause it to be unable to be spread on the material mixing plate 17 and be centrifugally thrown onto the cylindrical screen 13 as a whole, causing dynamic balance failure and vibration. The provision of a dispersion plate 12 can effectively reduce the thickness of the deaerated material when it is discharged from the outlet end, so that it can contact the material mixing plate 17 more evenly.

[0042] In this embodiment, the outer edge of the material mixing plate 17 is provided with a plate wall 171 extending toward the upper surface of the dispersion plate 12 and with a gradually increasing diameter. The end of the plate wall 171 is spaced from the upper surface of the material mixing plate 17 and the inner wall of the cylindrical screen 13 .

[0043] In the above structure, the disc wall 171 can further reduce the thickness of the degassing material, so that the material can be spread more evenly in the circumferential direction of the material leveling disc 17 .

[0044] In this embodiment, the tank body 15 and the cover body 16 are opened and closed by an opening and closing mechanism 18 .

[0045] In the above structure, the opening and closing mechanism 18 can be controlled by a hinge or an electric push rod or an oil cylinder or a pneumatic cylinder.

[0046] In this embodiment, the cylindrical screen 13 is detachably connected to the dispersion disk 12 .

[0047] In the above structure, the cylindrical screen 13 with different sizes of screen holes 131 can be replaced according to the properties of the degassing material (viscosity, etc.).

[0048] In this embodiment, the degassing tank 11 is further provided with a lower flushing nozzle 114 and an upper flushing nozzle 115 . The lower flushing nozzle 114 is located below the dispersion plate 12 , and the upper flushing nozzle 115 is located above the dispersion plate 12 and the cylindrical screen 13 .

[0049] In the above structure, the lower flushing nozzle 114 and the upper flushing nozzle 115 are cip cleaning balls, which meet the needs of online cleaning.

[0050] In this embodiment, the upper flushing nozzles 115 are divided into two groups and are arranged 180 degrees apart from each other in the rotation direction of the dispersion disk 12 .

[0051] In the above structure, there are two groups of upper flushing nozzles 115 to ensure that when water flows into the dispersion disk 12 and the cylindrical screen 13 during online cleaning, resistance is generated at symmetrical positions to avoid vibration due to different dynamic balance and ensure 360-degree full coverage of cleaning.

[0052] In this embodiment, a vertical observation window 116, a lighting window 117, and a pressure gauge 118 are further provided on the top of the degassing tank 11; and a material observation window 119 is provided on the side wall of the tank body 15 of the degassing tank 11.

[0053] In the above structure, the lighting window 117 is used for lighting, so that the degassing state can be observed through the vertical observation window 116, the pressure gauge 118 is used to display the vacuum degree, and the material observation window 119 can intuitively observe the storage amount of the degassing material in the degassing tank 11.

[0054] Beneficial effects of the utility model: the vacuum tube 111 is used to evacuate the degassing tank 11 to generate negative pressure, and the degassing material is input to the dispersion plate 12 through the feed pipe 113. The centrifugal force generated by the rotation of the dispersion plate 12 evenly spreads the material on the dispersion plate 12, and centrifugally moves around to reach the inner wall of the cylindrical screen 13. The degassing material passes through the sieve hole 131 under the action of the centrifugal force, and is sheared and dispersed by the sieve hole 131, so that the bubbles in the material are broken and escaped. Under the action of the vacuum system, the bubbles in the material are accelerated to escape and are quickly extracted, so as to obtain a uniform degassing material. The deaerating material will be thrown to the inner wall of the deaerating tank 11, and then gathered at the bottom of the deaerating tank 11, and extracted in real time through the discharge port 112; 3 groups of cylindrical screens 13 are installed on the dispersion plate 12, which can effectively improve the deaeration efficiency; it can be interconnected with multi-functional systems such as PLC frequency conversion control, material level control, pump pressure control, vacuum control, etc., and under the control of the PLC program, it runs fully automatically, with a high degree of freedom of process parameters and a wide range of applications; the discharge port 112 and the feed pipe 113 both adopt screw pump transportation, which can meet the needs of continuous production flow control and can also be used for cyclic batch production.

[0055] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A vacuum degassing machine, comprising a degassing tank, wherein the degassing tank is provided with a vacuum tube for evacuating the inner cavity thereof, and the bottom of the degassing tank is provided with a discharge port connected to the inner cavity thereof, characterized in that: The degassing tank is provided with a rotatable dispersion disk near the top of the inner cavity, and the upper surface of the dispersion disk is provided with at least one group of cylindrical screens extending upward and arranged concentrically with the rotation center of the dispersion disk, and the cylindrical screen is provided with a plurality of screen holes on the cylinder wall; when the cylindrical screens are multiple groups, the cylindrical screens are arranged concentrically and offset to each other, and the screen hole size of the cylindrical screen near the center side of the dispersion disk is larger than the screen hole size of the cylindrical screen near the outer edge of the dispersion disk; the degassing tank is also provided with a feeding pipe, and the outlet end of the feeding pipe is located above the dispersion disk and close to the center of the dispersion disk.

2. A vacuum degassing machine according to claim 1, characterized in that: A centrifugal motor for driving the dispersion disk to rotate is arranged on the top of the degassing tank.

3. A vacuum degassing machine according to claim 2, characterized in that: The degassing tank comprises a tank body and a cover body, a tank mouth is arranged on the top of the tank body, the cover body is buckled on the tank mouth, and the discharge port is located at the bottom of the tank body; the centrifugal motor is located on the outside of the top of the cover body, and the dispersion disk and the cylindrical screen are located inside the cover body; the feed pipe and the vacuum pipe are located on the cover body.

4. A vacuum degassing machine according to claim 1, 2 or 3, characterized in that: A material mixing plate is provided above the dispersion plate, which is spaced apart from the dispersion plate and arranged concentrically with the dispersion plate. The material mixing plate is fixed relative to the dispersion plate, and the outlet end of the feed pipe is located below the material mixing plate.

5. A vacuum degassing machine according to claim 4, characterized in that: The outer edge of the material mixing plate is provided with a plate wall extending toward the upper surface of the dispersion plate and having a gradually increasing diameter, and the end of the plate wall is spaced from the upper surface of the material mixing plate and the inner wall of the cylindrical screen.

6. A vacuum degassing machine according to claim 3, characterized in that: The tank body and the cover body are opened and closed by an opening and closing mechanism.

7. A vacuum degassing machine according to claim 1, characterized in that: The cylindrical screen is detachably connected to the dispersion disk.

8. A vacuum degassing machine according to claim 1, characterized in that: The degassing tank is also provided with a lower flushing nozzle and an upper flushing nozzle, wherein the lower flushing nozzle is located below the dispersion plate, and the upper flushing nozzle is located above the dispersion plate and the cylindrical screen.

9. A vacuum degassing machine according to claim 8, characterized in that: The upper flushing nozzles are divided into two groups, which are arranged 180 degrees apart from each other in the rotation direction of the dispersion disk.

10. A vacuum degassing machine according to claim 1, characterized in that: The top of the degassing tank is also provided with a vertical observation window, a lighting window, and a pressure gauge; the side wall of the degassing tank body is provided with a material observation window.

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