Vacuum defoaming machine

Abstract

The utility model discloses a vacuum defoaming machine, which relates to the technical field of defoaming and comprises a shell, and a vacuum cavity is arranged in the shell. The sealing cover can be rotatably connected to the shell; a transmission device; the defoaming tank comprises a tank body and a tank cover, the tank body is detachably connected to the output end of the transmission device, a first exhaust hole is formed in the tank cover, a filter part is arranged on the tank cover, the filter part corresponds to the first exhaust hole, so that an inner cavity of the tank body communicates with the vacuum cavity through the first exhaust hole and the filter part, and the filter part is used for filtering bacteria; the rotary driving device can drive the defoaming tank to rotate through the transmission device; and the vacuum generating device is used for enabling the vacuum cavity to generate negative pressure. The filtering piece on the tank cover is used for filtering bacteria, so that the filtering piece plays a role in blocking the bacteria, the bacteria in the vacuum cavity and the outside atmosphere are effectively prevented from entering the tank body, and then a solution in the defoaming tank is prevented from being polluted by the bacteria in the vacuum cavity.

Description

Technical Field

[0001] This utility model relates to the field of degassing technology, and in particular to a vacuum degassing machine. Background Technology

[0002] Vacuum degassing machines are crucial equipment in the field of biotechnology, primarily used in the production of pharmaceutical formulations and biological reagents. By creating a vacuum environment and utilizing pressure differences, vacuum degassing machines rapidly remove air bubbles from solutions, ensuring the purity and stability of the solution and meeting the high standards required for biological experiments and production. A vacuum degassing machine typically consists of a housing and a degassing tank. The housing contains a vacuum chamber, and the degassing tank has vent holes. When degassing is required, the operator first pours the solution into the degassing tank and places the tank into the vacuum chamber. The vacuum chamber then generates negative pressure, causing the air bubbles in the solution to burst. The gas released from these bursting bubbles is then expelled into the vacuum chamber through the vent holes on the degassing tank, thus completing the degassing process. However, in existing technologies, after the operator places the degassing tank into the vacuum chamber, gases carrying bacteria from the vacuum chamber can pass through the vent holes and enter the degassing tank, potentially contaminating the solution inside. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a vacuum degassing machine that can prevent contamination of the solution inside the degassing tank.

[0004] A vacuum degassing machine according to an embodiment of the present invention includes a housing with a vacuum chamber inside; a cover rotatably connected to the housing, capable of opening or sealing the upper end of the vacuum chamber; a transmission device disposed within the vacuum chamber; and a degassing tank comprising a tank body and a tank cover. The tank body is used to contain a solution and is detachably connected to the output end of the transmission device. The tank cover is detachably connected to the tank body, has a first vent hole, and has a filter element corresponding to the first vent hole. The system is configured such that the inner cavity of the tank is connected to the vacuum chamber through the first exhaust port and the filter element, the filter element being used to filter bacteria to prevent bacteria in the vacuum chamber from entering the tank; a rotary drive device is configured to drive the degassing tank to rotate via the transmission device, so that the degassing tank can rotate around its own axis while also rotating around the axis of the vacuum chamber; a vacuum generating device is configured to generate negative pressure in the vacuum chamber, so that the gas in the tank passes sequentially through the first exhaust port and the filter element and is discharged into the vacuum chamber.

[0005] It has at least the following beneficial effects:

[0006] When degassing of a solution is required, the operator pours the solution into the tank and installs the lid. Next, the operator places the degassing tank into the vacuum chamber and attaches the tank body to the output end of the transmission device. After installation, the operator rotates the lid to seal the upper end of the vacuum chamber and starts the vacuum generator and rotary drive. Once the rotary drive is activated, the degassing tank begins to rotate around its own axis and the axis of the vacuum chamber. The liquid in the solution inside the tank begins to rupture and release gas under centrifugal force. After the vacuum generator is activated, a negative pressure is generated in the vacuum chamber. Due to the pressure difference between the tank's inner cavity and the vacuum chamber, the gas inside the tank passes through the first exhaust port and the filter element and is discharged into the vacuum chamber, thus achieving degassing of the solution. After degassing, the operator rotates the lid to open the upper end of the vacuum chamber and removes the tank body from the output end of the transmission device, allowing the degassing tank to be removed from the vacuum chamber. The filter element on the can lid is used to filter bacteria, which effectively prevents bacteria from the vacuum chamber and the outside atmosphere from entering the can, thus preventing the solution in the degassing tank from being contaminated by bacteria in the vacuum chamber.

[0007] According to the vacuum degassing machine of this utility model embodiment, the inner side of the can lid is provided with a first internal thread, and the outer wall of the can body is provided with a first external thread. The first internal thread can be threadedly connected with the first external thread so that the can lid covers the can body.

[0008] According to the vacuum degassing machine of this utility model embodiment, a first sealing ring is provided between the can lid and the can body.

[0009] According to an embodiment of the present invention, the vacuum degassing machine further includes a sealing head. The bottom wall of the tank is provided with a drain hole for discharging the solution inside the tank. The sealing head can be inserted into the drain hole to seal the drain hole.

[0010] According to the vacuum degassing machine of this utility model embodiment, the bottom wall of the tank is a cone shape that gradually narrows from top to bottom, so that the solution on the bottom wall of the tank can flow to the drain hole.

[0011] According to an embodiment of the present invention, the vacuum degassing machine further includes a mounting cover, a second exhaust hole on the mounting cover, an exhaust pipe on the cover, the exhaust pipe communicating with the first exhaust hole, an installation groove at the upper end of the exhaust pipe, a filter element disposed in the installation groove, and the mounting cover being detachably connected to the outer wall of the exhaust pipe, so that the gas in the tank passes through the first exhaust hole, the exhaust pipe, the filter element and the second exhaust hole in sequence and is discharged into the vacuum chamber.

[0012] According to the vacuum degassing machine of this utility model embodiment, the inner side of the mounting cover is provided with a second internal thread, and the outer wall of the exhaust pipe is provided with a second external thread. The second internal thread can be threadedly connected with the second external thread so that the mounting cover covers the exhaust pipe. A second sealing ring is provided between the mounting cover and the filter element.

[0013] According to the vacuum degassing machine of this utility model embodiment, the second exhaust port can be inserted into the output end of the gas boosting device, so that the gas delivered by the gas boosting device can pass through the second exhaust port, the filter element, the exhaust pipe and the first exhaust port in sequence and enter the tank body, thereby increasing the internal pressure of the tank body.

[0014] The vacuum degassing machine according to an embodiment of the present invention further includes a mounting cup, which is connected to the output end of the transmission device. The can body is inserted into the mounting cup, and a locking component is provided on the mounting cup to fix the can body inside the mounting cup.

[0015] According to the vacuum degassing machine of this utility model embodiment, the locking assembly includes a plurality of fasteners, a plurality of threaded holes are provided on the cup wall of the mounting cup, the plurality of threaded holes are arranged in a circumferential array along the axis of the mounting cup, the plurality of fasteners are respectively threadedly connected to the hole walls of the plurality of threaded holes, and the plurality of fasteners can all abut against the can body inside the mounting cup so that the plurality of fasteners clamp the can body.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the internal structure of the vacuum degassing machine according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the degassing tank and mounting cup in the vacuum degassing machine according to an embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the degassing tank in the vacuum degassing machine according to an embodiment of the present invention;

[0021] Figure 4 This is a cross-sectional schematic diagram of the degassing tank in the vacuum degassing machine according to an embodiment of this utility model;

[0022] Figure 5This is a partial cross-sectional view of the can lid in the vacuum degassing machine according to an embodiment of the present invention;

[0023] Figure label:

[0024] Degassing tank 100; tank body 110; drain hole 111; tank cover 120; first vent hole 121; vent pipe 130; mounting groove 131; filter element 140; mounting cover 150; second vent hole 151; sealing head 160; first sealing ring 170; second sealing ring 180;

[0025] Mounting cup 200; Locking assembly 210; Fastener 211;

[0026] Transmission device 300;

[0027] Rotary drive unit 400;

[0028] 500 housing; 510 vacuum chamber; 520 cover. Detailed Implementation

[0029] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0030] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0031] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0032] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0033] refer to Figure 1 , Figure 3 and Figure 4The vacuum degassing machine according to an embodiment of the present invention includes a housing 500, a cover 520, a transmission device 300, a degassing tank 100, a rotary drive device 400, and a vacuum generating device.

[0034] A vacuum chamber 510 is provided inside the housing 500. A cover 520 is rotatably connected to the housing 500 and can open or seal the upper end of the vacuum chamber 510. A transmission device 300 is located inside the vacuum chamber 510. The degassing tank 100 includes a tank body 110 and a tank cover 120. The tank body 110 is used to contain the solution and is detachably connected to the output end of the transmission device 300. The tank cover 120 is detachably connected to the tank body 110 and has a first vent hole 121. A filter element 140 is provided on the tank cover 120 and is correspondingly arranged with the first vent hole 121 so that the inner cavity of the tank body 110 is connected to the vacuum chamber 510 through the first vent hole 121 and the filter element 140. The filter element 140 is used to filter bacteria to prevent bacteria in the vacuum chamber 510 from entering the tank body 110. A rotary drive device 400 drives the degassing tank 100 to rotate via a transmission device 300, so that the degassing tank 100 can rotate around its own axis while also rotating around the axis of the vacuum chamber 510. A vacuum generating device is used to generate negative pressure in the vacuum chamber 510, so that the gas in the tank 110 passes sequentially through the first exhaust port 121 and the filter element 140 and is discharged into the vacuum chamber 510.

[0035] It should be explained that in the field of biotechnology, vacuum degassing machines are mainly used in the production processes of pharmaceutical preparations, biological reagents, and other products. These products have high requirements for purity, stability, and sterility; the presence of air bubbles and bacteria can adversely affect the products. Therefore, vacuum degassing machines need to be used in a sterile operating room. In existing technology, operators need to pour the solution into the degassing tank 100 in a laminar flow hood, and then place the degassing tank 100 into the vacuum degassing machine. Although the vacuum degassing machine is placed in a sterile operating room, it cannot completely eliminate all bacteria. Therefore, after the operator places the degassing tank 100 into the vacuum chamber 510, the gas carrying bacteria in the vacuum chamber 510 may pass through the vent on the degassing tank 100 and contaminate the solution.

[0036] A vacuum chamber 510 is provided inside the housing 500, and a cover 520 is rotatably connected to the housing 500. When the degassing tank 100 needs to be placed into the vacuum chamber 510, the operator can rotate the cover 520 to open the upper end of the vacuum chamber 510. After the degassing tank 100 is placed, the operator can rotate the cover 520 to seal the upper end of the vacuum chamber 510. The cover 520 is a common feature in the field of degassing machines and will not be described further here. A transmission device 300 is provided inside the vacuum chamber 510, and the degassing tank 100 is detachably connected to the output end of the transmission device 300. It is understood that when the solution in the degassing tank 100 needs to be degassed, the operator can place the degassing tank 100 into the vacuum chamber 510 and install it on the output end of the transmission device 300. After degassing is completed, the operator can detach the degassing tank 100 from the output end of the transmission device 300 so that the operator can remove the degassing tank 100 from the vacuum chamber 510. A rotary drive device 400 is housed within the housing 500. The output end of the rotary drive device 400 is connected to the input end of the transmission device 300, enabling the rotary drive device 400 to be connected to the degassing tank 100 via the transmission device 300. After the rotary drive device 400 is started, under the action of the transmission device 300, the degassing tank 100 rotates around its own axis while simultaneously rotating around the axis of the vacuum chamber 510. This is equivalent to the degassing tank 100 revolving while rotating on its own axis, which is beneficial for improving the degassing effect and efficiency of the solution within the degassing tank 100. As one embodiment of this utility model, the vacuum generating device includes a vacuum pump and a vacuum tube. The output end of the vacuum pump is connected to the vacuum chamber 510 via the vacuum tube. After the vacuum pump is started, a negative pressure is formed in the vacuum chamber 510, which will not be further elaborated here.

[0037] The degassing tank 100 includes a tank body 110 and a lid 120. When degassing a solution is required, the operator pours the solution to be degassed into the tank body 110 and then installs the lid 120 onto the tank body 110. After the lid 120 is installed, the operator can install the tank body 110 onto the output end of the transmission device 300 inside the vacuum chamber 510, so that the tank body 110, the lid 120, and the solution inside the tank body 110 are placed together in the vacuum chamber 510. The lid 120 is provided with a first vent hole 121, and a filter element 140 is provided on the area of ​​the lid 120 corresponding to the first vent hole 121, so that the inner cavity of the tank body 110 is connected to the vacuum chamber 510 through the first vent hole 121 and the filter element 140. That is, after the vacuum chamber 510 generates negative pressure, the gas inside the tank body 110 can pass through the first vent hole 121 and the filter element 140 in sequence and enter the vacuum chamber 510. The filter element 140 is used to filter bacteria in the gas; in other words, bacteria in the gas cannot pass through the filter element 140. As one embodiment of this utility model, the filter element 140 includes a substrate and a filter membrane, the filter membrane being disposed on the substrate. The filter membrane can be a polytetrafluoroethylene bacterial filter membrane, which will not be further described here.

[0038] Understandably, when degassing of the solution is required, the operator pours the solution to be degassed into tank 110 and installs the tank cover 120 onto tank 110. Next, the operator places the degassing tank 100 into the vacuum chamber 510 and installs tank 110 onto the output end of the transmission device 300. After the degassing tank 100 is installed, the operator rotates the sealing cap 520 to seal the upper end of the vacuum chamber 510 and starts the vacuum generator and the rotary drive device 400. After the rotary drive device 400 is started, the degassing tank 100 begins to rotate around its own axis and around the axis of the vacuum chamber 510. The liquid in the solution inside tank 110 begins to rupture and release gas under centrifugal force. After the vacuum generator is started, the vacuum chamber 510 generates negative pressure. Due to the pressure difference between the inner cavity of the tank 110 and the vacuum chamber 510, the gas in the tank 110 passes through the first exhaust port 121 and the filter element 140 in sequence and is discharged into the vacuum chamber 510, thereby achieving degassing treatment of the solution in the tank 110. After degassing is completed, the operator rotates the cap 520 to open the upper end of the vacuum chamber 510 and removes the tank 110 from the output end of the transmission device 300, so that the degassing tank 100 can be taken out from the vacuum chamber 510. The filter element 140 on the cap 120 is used to filter bacteria, so that the filter element 140 plays a blocking role against bacteria, effectively preventing bacteria from the vacuum chamber 510 and the outside atmosphere from entering the tank 110, thereby preventing the solution in the degassing tank 100 from being contaminated by bacteria in the vacuum chamber 510.

[0039] refer to Figure 1 and Figure 2The vacuum degassing machine also includes a mounting cup 200, which is connected to the output end of the transmission device 300. A container 110 is inserted into the mounting cup 200. The mounting cup 200 is equipped with a locking assembly 210, which is used to fix the container 110 inside the mounting cup 200. It can be understood that the connection between the mounting cup 200 and the output end of the transmission device 300 allows the rotary drive device 400 to be connected to the mounting cup 200 via the transmission device 300, thereby enabling the rotary drive device 400 to drive the mounting cup 200 to rotate around the axis of the vacuum chamber 510 while rotating on its own axis. When degassing is required in the degassing tank 100, the operator can place the degassing tank 100 into the vacuum chamber 510 and insert the tank body 110 into the mounting cup 200. The operator then uses the locking assembly 210 on the mounting cup 200 to lock and fix the tank body 110 onto the mounting cup 200, allowing the tank body 110 to be detachably connected to the output end of the transmission device 300 via the mounting cup 200 and the locking assembly 210. The locking assembly 210 prevents the degassing tank 100 from detaching from the mounting cup 200 during rotation. After degassing is complete, the operator can drive the locking assembly 210 to release the tank body 110, allowing it to be removed from the mounting cup 200.

[0040] refer to Figure 2 The locking assembly 210 includes multiple fasteners 211. The mounting cup 200 has multiple threaded holes arranged circumferentially along its axis. Each fastener 211 is threadedly connected to the wall of one of the threaded holes. All fasteners 211 abut against the container 110 inside the mounting cup 200, thus clamping the container 110. Understandably, after the operator inserts the container 110 of the degassing tank 100 into the mounting cup 200, all fasteners 211 can be tightened, pressing them against the container 110. This clamps the container 110 within the mounting cup 200, preventing it from detaching during the degassing process. After degassing is complete, the operator can loosen multiple fasteners 211, at which point the operator can remove the degassing tank 100 body 110 from the mounting cup 200. In one embodiment of this invention, the fasteners 211 can be bolts. In another embodiment, the outer wall of the tank body 110 is provided with a first fastening part, and the mounting cup 200 is provided with a second fastening part. The first and second fastening parts can engage with each other to restrict rotation of the tank body 110 relative to the mounting cup 200. It is understood that after the operator inserts the tank body 110 into the mounting cup 200, the first fastening part engages with the second fastening part, and the second fastening part limits the movement of the tank body 110 relative to the mounting cup 200.

[0041] In this embodiment of the invention, the vacuum degassing machine includes two degassing tanks 100, and the transmission device 300 has two output ends. Each output end of the transmission device 300 is connected to a mounting cup 200. The two degassing tanks 100 are detachably connected to the two mounting cups 200. Both mounting cups 200 are inclined, and the included angle formed by the axes of the two mounting cups 200 points downwards, causing the degassing tanks 100 installed in the two mounting cups 200 to be inclined. In another embodiment of the invention, the transmission device 300 includes a rotating platform and two first motors. The rotating platform is rotatably connected to the inner bottom wall of the vacuum chamber 510. Both first motors are mounted on the rotating platform and are inclined. The output ends of the two first motors are respectively connected to the two mounting cups 200. The rotary drive device 400 includes a second motor, and the output end of the second motor is connected to the rotating platform. It is understood that the second motor drives the rotating platform to rotate, which in turn causes the degassing tanks 100 inside the two mounting cups 200 to rotate around the axis of the vacuum chamber 510. The two first motors respectively drive the two mounting cups 200 to rotate, which in turn causes the two degassing tanks 100 to rotate around their own axes. In another embodiment of this utility model, the rotary drive includes a fixed gear and a motor. The transmission device 300 includes two gear sets. The fixed gear is located inside the vacuum chamber 510. One end of each gear set meshes with the fixed gear, and the other end of each gear set is connected to the two mounting cups 200. The motor can drive the two gear sets to rotate around the axis of the fixed gear. During the rotation of the two gear sets around the axis of the fixed gear, the other end of each gear set drives the two mounting cups 200 to rotate, thus causing the degassing tanks 100 inside the mounting cups 200 to rotate on their own axes while simultaneously revolving around the axis of the vacuum chamber 510. In the field of vacuum degassing machine technology, it is common to set up a transmission device 300 and a rotary drive device 400 to realize the rotation and revolution of the degassing tank 100. The transmission device 300 is often a gear transmission device 300. The specific structure and principle of the transmission device 300 and the rotary drive device 400 will not be described in detail here.

[0042] refer to Figure 3 and Figure 4The can lid 120 has a first internal thread on its inner side, and the can body 110 has a first external thread on its outer wall. The first internal thread can be threadedly connected to the first external thread so that the can lid 120 can be closed onto the can body 110. It is understood that after the operator pours the solution to be degassed into the can body 110, they can tighten the can lid 120 onto the first external thread on the can body 110 via the first internal thread, so that the can lid 120 mounting cap 150 is closed onto the can body 110. After degassed, the operator can loosen the can lid 120, causing the first internal thread on the can lid 120 to disengage from the first external thread on the can body 110, and then remove the can lid 120 from the can body 110. A first sealing ring 170 is provided between the can lid 120 and the can body 110. Understandably, after the operator tightens the can lid 120, the can lid 120 can compress the first sealing ring 170. The first sealing ring 170 seals the gap at the connection between the can lid 120 and the can body 110, preventing bacteria-laden gas in the vacuum chamber 510 from passing through the gap at the connection between the can lid 120 and the can body 110 and entering the can body 110. Specifically, a first mounting ring groove is provided on the inner side of the can lid 120, and the first sealing ring 170 is disposed in the first mounting ring groove. In this embodiment of the present invention, the can body 110 also has a locking assembly, which is used to lock the can lid 120 onto the can body 110. Understandably, after the operator tightens the can lid 120 onto the can body 110, the locking assembly can lock the can lid 120 onto the can body 110, so that the can lid 120 can be firmly connected to the can body 110, preventing the can lid 120 from detaching from the can body 110 during the degassing process.

[0043] refer to Figure 3 and Figure 4 The degassing tank 100 also includes a sealing head 160. A drain hole 111 is provided on the bottom wall of the tank body 110 for draining the solution inside the tank body 110. The sealing head 160 can be inserted into the drain hole 111 to seal it. Understandably, when the operator needs to remove the degassed solution from the tank body 110, the sealing head 160 can be removed from the drain hole 111, allowing the degassed solution to drain out, improving the convenience of solution collection. When pouring solution into the tank body 110, the operator must first insert the sealing head 160 into the drain hole 111 to seal it. In one embodiment of this utility model, both the sealing head 160 and the drain hole 111 have mating threaded structures on their walls, allowing the sealing head 160 to be tightened onto the drain hole 111 and also allowing the sealing head 160 to be loosened and removed from the drain hole 111. Further details are omitted here. (Reference) Figure 4In another embodiment of this utility model, the degassing tank 100 also includes a fixed cover, and a sealing ring is fitted on the outer wall of the sealing head 160. After the operator inserts the sealing head 160 into the drain hole 111, the sealing ring seals the gap between the sealing head 160 and the drain hole 111. Then, the operator tightens the fixed cover under the bottom wall of the tank body 110, so that the fixed cover abuts against the sealing head 160. The fixed cover prevents the sealing head 160 from sliding out of the drain hole 111, ensuring that the sealing head 160 and the sealing ring on the sealing head 160 can always seal the drain hole 111 during the degassing process.

[0044] refer to Figure 3 and Figure 4 The bottom wall of the tank 110 is a cone shape that gradually tapers from top to bottom, so that the solution on the bottom wall of the tank 110 can flow to the drain hole 111. It can be understood that the bottom wall of the tank 110 is a cone shape that gradually tapers from top to bottom, meaning the bottom wall of the tank 110 slopes downwards. The bottom wall of the tank 110 has a certain guiding function, allowing the solution remaining on the bottom wall of the tank 110 to flow to the drain hole 111 and be discharged from the tank 110 through the drain hole 111, which helps to reduce solution waste.

[0045] refer to Figures 2 to 5 The degassing tank 100 also includes a mounting cover 150, which has a second vent 151. A vent pipe 130 is provided on the tank cover 120, communicating with the first vent 121. The upper end of the vent pipe 130 has a mounting groove 131, and a filter element 140 is disposed within the mounting groove 131. The mounting cover 150 is detachably fitted onto the vent pipe 130, allowing gas inside the tank 110 to sequentially pass through the first vent 121, the vent pipe 130, the filter element 140, and the second vent 151 before being discharged into the vacuum chamber 510. It is understood that the inner cavity of the tank 110, the first vent 121, the vent pipe 130, the filter element 140, and the second vent 151 are all interconnected. After a period of use, the filtration performance of the filter element 140 will decrease, thus requiring replacement with a new filter element 140. When filter element 140 needs to be replaced, the operator can remove the mounting cover 150 from the exhaust pipe 130, then remove the old filter element 140 from the mounting slot 131 and place the new filter element 140 into the mounting slot 131. Finally, the operator can replace the mounting cover 150 on the exhaust pipe 130 to complete the replacement of filter element 140.

[0046] refer to Figure 4 and Figure 5The mounting cover 150 has a second internal thread on its inner side, and the exhaust pipe 130 has a second external thread on its outer wall. The second internal thread can be threadedly connected to the second external thread so that the mounting cover 150 covers the exhaust pipe 130. A second sealing ring 180 is provided between the mounting cover 150 and the filter element 140. It is understood that after the operator places a new filter element 140 into the mounting groove 131, the mounting cover 150 can be tightened onto the second external thread on the outer wall of the exhaust pipe 130 via the second internal thread, so that the mounting cover 150 covers the exhaust pipe 130. When the filter element 140 needs to be replaced, the operator can loosen the mounting cover 150, so that the second internal thread on the mounting cover 150 disengages from the second external thread on the exhaust pipe 130, and the mounting cover 150 can be removed from the exhaust pipe 130. A second sealing ring 180 is provided between the mounting cover 150 and the filter element 140. Understandably, after the operator tightens the mounting cover 150, the mounting cover 150 can compress the second sealing ring 180, causing the second sealing ring 180 to compress the filter element 140. The second sealing ring 180 seals the gap between the mounting cover 150 and the filter element 140, preventing bacteria-laden gas in the vacuum chamber 510 from passing through the gap between the mounting cover 150 and the filter element 140 and entering the tank 110. As an embodiment of this utility model, the degassing tank 100 also includes a third sealing ring, which is disposed in the mounting groove 131. The second sealing ring 180 abuts against the upper surface of the filter element 140, and the third sealing ring abuts against the lower surface of the filter element 140.

[0047] refer to Figure 4 and Figure 5 The second vent 151 allows the output end of the gas booster to be inserted, enabling the gas supplied by the gas booster to pass sequentially through the second vent 151, filter 140, vent pipe 130, and first vent 121 into the tank 110, increasing the internal pressure of the tank 110. Understandably, when the operator needs to remove the degassed solution from the tank 110, the sealing head 160 can be removed from the drain hole 111, and then the output end of the gas booster can be inserted into the second vent 151. The operator then activates the gas booster, and the gas supplied by the gas booster passes sequentially through the second vent 151, filter 140, vent pipe 130, and first vent 121 into the tank 110, increasing the internal pressure of the tank 110. After the air pressure inside the tank 110 increases, the solution inside the tank 110 can be discharged more quickly from the drain hole 111 on the bottom wall of the tank 110, thereby increasing the speed at which the operator collects the solution. In this embodiment of the invention, the gas pressurization device can be a pressurizing air pump, and the gas delivered by the pressurizing air pump is also filtered by the filter element 140, so that the gas sent into the tank 110 does not carry bacteria.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] Of course, this utility model is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of this utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A vacuum deaerator characterized by, The application relates to a vacuum degassing device. The vacuum degassing device comprises: a shell (500) provided with a vacuum cavity (510); a cover (520) rotatably connected to the shell (500), the cover (520) being capable of opening or sealing the upper end of the vacuum cavity (510); a transmission device (300) arranged in the vacuum cavity (510); a degassing tank (100) comprising a tank body (110) and a tank cover (120), the tank body (110) being used for containing a solution, the tank body (110) being detachably connected to the output end of the transmission device (300), the tank cover (120) being detachably connected to the tank body (110), the tank cover (120) being provided with a first exhaust hole (121), the tank cover (120) being provided with a filter (140), the filter (140) being arranged in correspondence with the first exhaust hole (121) so that the inner cavity of the tank body (110) is in communication with the vacuum cavity (510) through the first exhaust hole (121) and the filter (140), the filter (140) being used for filtering bacteria so as to prevent the bacteria in the vacuum cavity (510) from entering the tank body (110); a rotary driving device (400) capable of driving the degassing tank (100) to rotate through the transmission device (300) so that the degassing tank (100) can rotate around its own axis and also rotate around the axis of the vacuum cavity (510); 2. The vacuum deaerator of claim 1, wherein: a vacuum generating device used for generating negative pressure in the vacuum cavity (510) so that the gas in the tank body (110) sequentially passes through the first exhaust hole (121) and the filter (140) and is discharged into the vacuum cavity (510).

3. The vacuum deaerator of claim 2, wherein: The inner side of the tank cover (120) is provided with a first inner thread, the outer wall of the tank body (110) is provided with a first outer thread, and the first inner thread is threadedly connected with the first outer thread so that the tank cover (120) is covered on the tank body (110).

4. The vacuum deaerator of claim 1, wherein: A first sealing ring (170) is arranged between the tank cover (120) and the tank body (110).

5. The vacuum deaerator of claim 4, wherein: The degassing tank (100) further comprises a plugging head (160), the bottom wall of the tank body (110) is provided with a liquid discharge hole (111) used for discharging the solution in the tank body (110), and the plugging head (160) can be inserted into the liquid discharge hole (111) so that the plugging head (160) can seal the liquid discharge hole (111). The bottom wall of the tank body (110) is tapered and gradually shrinks from top to bottom, so that the solution on the bottom wall of the tank body (110) can flow to the liquid discharge hole (111).

6. The vacuum deaerator of claim 4, wherein: The defoaming tank (100) further comprises a mounting cover (150) provided with a second exhaust hole (151), the tank cover (120) is provided with an exhaust pipe (130) in communication with the first exhaust hole (121), the upper end of the exhaust pipe (130) is provided with a mounting groove (131), the filter (140) is arranged in the mounting groove (131), and the mounting cover (150) is detachably connected to the outer wall of the exhaust pipe (130), so that the gas in the tank body (110) passes through the first exhaust hole (121), the exhaust pipe (130), the filter (140) and the second exhaust hole (151) in sequence and is discharged into the vacuum cavity (510).

7. The vacuum deaerator of claim 6, wherein: The inner side of the mounting cover (150) is provided with a second internal thread, the outer wall of the exhaust pipe (130) is provided with a second external thread, the second internal thread can be threadedly connected with the second external thread, so that the mounting cover (150) is covered on the exhaust pipe (130), and a second sealing ring (180) is arranged between the mounting cover (150) and the filter (140).

8. The vacuum deaerator of claim 6, wherein: The second exhaust hole (151) can be inserted by an output end of a gas pressurizing device, so that the gas delivered by the gas pressurizing device can pass through the second exhaust hole (151), the filter (140), the exhaust pipe (130) and the first exhaust hole (121) in sequence and enter the tank body (110), and the pressure of the inner cavity of the tank body (110) is increased.

9. The vacuum deaerator of claim 1, wherein: Further comprising a mounting cup (200) connected with the output end of the transmission device (300), the tank body (110) is inserted into the mounting cup (200), and the mounting cup (200) is provided with a locking assembly (210) for fixing the tank body (110) in the mounting cup (200).

10. The vacuum deaerator of claim 9, wherein: The locking assembly (210) comprises a plurality of fasteners (211), a plurality of threaded holes are formed in the cup wall of the mounting cup (200), the plurality of threaded holes are arranged in a circular array along the axis of the mounting cup (200), the plurality of fasteners (211) are respectively threadedly connected with the hole walls of the plurality of threaded holes, and the plurality of fasteners (211) can abut against the tank body (110) in the mounting cup (200), so that the plurality of fasteners (211) clamp the tank body (110).

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