Oil ring vacuum negative pressure unit

Abstract

The present invention relates to the field of pumps, and discloses an oil ring vacuum negative pressure unit, comprising: a casing, a bottom of which is provided with a recovery groove, a bottom of the casing is provided with a drain port and an oil drain port connected to the recovery groove, the oil drain port is located above the drain port, and a top side of the casing is provided with an air outlet; a pressure storage mechanism, which is located in the casing and forms a pressure storage chamber arranged upward, and a top side of the pressure storage mechanism is provided with a plurality of air holes connected to the pressure storage chamber; a spray mechanism, which is located in the casing and above the pressure storage mechanism, and the spray mechanism has a plurality of spray heads arranged downward; and a vacuum pump, which is connected with an air outlet pipe, and the air outlet pipe passes through the casing and is connected to the pressure storage chamber. The present invention can recycle the oil contained in the exhaust gas of the vacuum pump during operation, which not only improves the cleanliness of the gas, but also reduces the waste of oil, and is more environmentally friendly.

Description

Technical Field

[0001] The invention relates to a pump, in particular to an oil ring vacuum negative pressure unit. Background Art

[0002] Vacuum pumps can be divided into oil ring vacuum pumps and water ring vacuum pumps according to the different media they use. For oil ring vacuum pumps, oil is used as the medium. The gas discharged by the oil ring vacuum pump contains oil, which is easy to pollute the air environment. Therefore, a filter is currently connected to the gas outlet of the oil ring vacuum pump to absorb and remove the oil in the gas before discharging it. Although this method can effectively solve the problem of oil mixed in the gas when the oil ring vacuum pump is discharged, the filter needs to be cleaned frequently, and it is difficult to recover the oil absorbed in the filter, which increases the cost of use. Therefore, there is an urgent need for a vacuum device that can remove oil mixed in the gas in a more environmentally friendly way. Summary of the invention

[0003] The purpose of the present invention is to provide an oil ring vacuum negative pressure unit to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0004] The solution of the present invention to solve its technical problem is:

[0005] The oil ring vacuum negative pressure unit comprises: a casing, a recovery groove is arranged at the bottom, a drain port and an oil drain port connected to the recovery groove are arranged at the bottom of the casing, the oil drain port is located above the drain port, and an air outlet is arranged on the top side of the casing; a pressure storage mechanism is located in the casing and formed with an upwardly arranged pressure storage chamber, and a plurality of diffusion holes connected to the pressure storage chamber are arranged on the top side of the pressure storage mechanism; a spray mechanism is located in the casing and above the pressure storage mechanism, and the spray mechanism has a plurality of downwardly arranged spray heads; a vacuum pump is connected with an air outlet pipe, and the air outlet pipe passes through the casing and is connected to the pressure storage chamber.

[0006] The technical solution has at least the following beneficial effects: when the vacuum pump is working, the gas discharged from the vacuum pump is output from the air outlet pipe to the pressure storage chamber of the pressure storage mechanism. At this time, the gas is pressurized in the pressure storage chamber and then discharged upward from the multiple diffusion holes on the top side of the pressure storage mechanism, so that the discharged gas is fully diffused, and then the spray head in the spray mechanism sprays downward, and the formed water mist is fully in contact with the gas diffused upward, and the surface tension of the water droplets in the water mist is used to wrap the oil droplets in the gas, so as to capture the large particulate matter (such as oil droplets) in the gas, and then drip into the recovery tank under the action of gravity, and the gas after the oil droplets are removed continues to rise and is discharged from the air outlet on the top side of the casing. Due to the different densities of water and oil, the water and oil accumulated in the recovery tank will be layered up and down. When the oil accumulates enough, it can be discharged from the oil discharge port for recycling. In this way, the oil contained in the gas discharged from the vacuum pump can be recycled, which not only improves the cleanliness of the gas, but also reduces the waste of oil, and is more environmentally friendly.

[0007] As a further improvement of the above technical solution, the pressure storage mechanism includes a pressure storage inner shell, a driving motor, a conveying paddle and a top cover. A support leg is connected between the outer bottom side of the pressure storage inner shell and the recovery tank. The pressure storage chamber is formed inside the pressure storage inner shell. The flow area of ​​the pressure storage chamber gradually decreases upward. The driving motor is connected to the pressure storage inner shell. The driving motor is connected to the conveying paddle. The driving motor can drive the conveying paddle to rotate and generate an upward airflow. The top cover is connected to the top side of the pressure storage inner shell. A plurality of diffusion holes are formed on the top cover. A discharge valve is provided on the bottom side of the pressure storage inner shell. When the gas enters the pressure storage chamber, the conveying slurry is driven to rotate by the driving motor, and the gas can be transported upward. Since the flow area in the pressure storage chamber gradually decreases upward, the gas is gradually squeezed in the process of rising in the pressure storage chamber, and then released from the multiple diffusion holes on the top cover. In addition, when the driving motor drives the conveying slurry to rotate, it can drive the gas in the pressure storage chamber to rotate. At this time, large particles of oil in the gas will be thrown to the inner wall of the pressure storage chamber under the action of centrifugal force, and form an oil film that gradually flows downward to the bottom of the pressure storage chamber, and finally discharged from the discharge valve. In this way, a double separation is achieved in the pressure storage chamber. First, the larger particles of oil droplets are separated and collected by centrifugal force, and then the gas is pressurized to increase the pressure of the gas when it is discharged from the pressure storage chamber. When discharging the pressure storage inner shell, the gas diffuses to the surroundings, and the gas is more fully in contact with the water mist formed by the sprinkler head, thereby further improving the effect of capturing the remaining oil droplets in the gas by the surface tension of the water droplets in the water mist.

[0008] As a further improvement of the above technical solution, the conveying paddle includes a transmission rod, a separation blade and a pressurizing blade. The driving motor drives and connects the transmission rod. The separation blade is connected to the bottom of the transmission rod. The driving motor drives the transmission rod to rotate and enables the separation blade to pull the air upward. A plurality of separation blades are arranged around the transmission rod. The pressurizing blade is connected to the top of the transmission rod. The pressurizing blade spirally extends upward around the transmission rod. The gas enters the pressure storage chamber and rotates in the pressure storage chamber driven by the separation blade. It can drive the gas to rotate in the pressure storage chamber so that the gas is evenly distributed in the pressure storage chamber. The main purpose is to separate and collect larger oil droplets by centrifugal force at this position. The gas can also be pushed upward and the spiral pressurizing blade is used to pressurize and transport the gas upward. By configuring different types of blades, the effect of separating oil droplets and pressurizing the gas in the pressure storage chamber is improved.

[0009] As a further improvement of the above technical solution, an inlet flow channel is arranged around the outer side of the pressure accumulator inner shell, and a plurality of inlet holes are arranged between the inlet flow channel and the pressure accumulator inner shell, and the plurality of inlet holes are respectively located below the separation blades, and the outlet pipe is connected to the inlet flow channel. When the gas enters the pressure accumulator chamber, it first enters the inlet flow channel, and the gas flows around the pressure accumulator inner shell along the inlet flow channel, and then enters the pressure accumulator chamber from the plurality of inlet holes of the inlet flow channel, so that the distribution uniformity of the gas when entering the pressure accumulator chamber can be further improved, and the inlet hole is located below the separation blade, which can reduce the mutual interference of the rotating airflow formed by the rotation of the separation blade during the intake, and reduce the noise generated during the intake.

[0010] As a further improvement of the above technical solution, the top cover is in the shape of a cone with a small top and a large bottom. A guide groove extending away from the center is provided on the top side of the top cover. A plurality of guide grooves are provided around the center of the top cover, and a connecting groove is provided between two adjacent guide grooves. When the water mist above the pressure accumulator inner shell in the casing drops onto the top cover, the droplets can flow along the cone-shaped top cover with a small top and a large bottom toward the edge of the top cover. Since the guide groove and the connecting groove connecting the two adjacent guide grooves are provided on the top side of the top cover, the convergence of the droplets can be accelerated, thereby improving the efficiency of the droplets flowing on the top side of the top cover.

[0011] As a further improvement of the above technical solution, the spray mechanism includes a fixed grid, a water receiving pipe and a shunt pipe, the fixed grid is connected to the housing, a plurality of first vents are arranged on the fixed grid, the shunt pipe is connected to the fixed grid, a plurality of the spray heads are arranged on the shunt pipe, one end of the water receiving pipe is connected to the housing, and the other end of the water receiving pipe is connected to the shunt pipe. The fixed grid provides support and fixation for the shunt pipe, and the mesh formed on the fixed grid itself can form a first vent for gas to pass through. When in use, the shunt pipe supplies water to the plurality of spray heads, so that the plurality of spray heads spray water mist into the pressure storage chamber, and the rising airflow is discharged upward from the first vent formed by the fixed grid after passing through the water mist.

[0012] As a further improvement of the above technical solution, the bottom side of the fixed grid is connected with a plurality of spikes. When the gas encounters water mist to form bubbles during the rising process, the spikes on the bottom side of the fixed grid pierce the bubbles, allowing the oil to fall onto the top cover, thereby improving the collection efficiency of the oil and preventing the bubbles from being directly combined with the oil and discharged upward during spraying.

[0013] As a further improvement of the above technical solution, at least two sides of the fixed grid are inclined upward toward the middle, a plurality of the diverter pipes are arranged at intervals on the fixed grid, and the water receiving pipe is connected to the plurality of the diverter pipes. The fixed grid is arranged obliquely, which can increase the space occupied in the up and down directions, and there are a plurality of diverter pipes, each of which is provided with a plurality of sprinkler heads, so that the spray coverage can be increased and the uniformity of water supply to the sprinkler heads can be improved.

[0014] As a further improvement of the above technical solution, a return pipe is connected between the drain port and the water receiving pipe. The water collected in the housing can flow back to the water receiving pipe through the return pipe and resupply water to the sprinkler head through multiple diversion pipes, thereby improving water utilization.

[0015] As a further improvement of the above technical solution, the present invention also includes a condensing mechanism, the condensing mechanism includes a condensing plate and a refrigerator, the condensing plate is connected to the housing, the condensing plate is located above the spraying mechanism, a plurality of second vents are arranged on the condensing plate, and the condensing plate is located on the top side of the condensing plate. The rising airflow passes through the spraying mechanism and then passes through the condensing plate. Since the refrigerator cools the condensing plate, the condensing plate maintains a relatively low temperature. When the airflow passes through the condensing plate upward, water and oil can be further condensed and then dripped into the housing, which can further improve the collection efficiency of water and oil. The condensed gas passes through the second vents and is discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for use in the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present invention, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the internal structure of the casing of the present invention.

[0018] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A.

[0019] Figure 3 It is a top cover stereogram of the present invention.

[0020] Figure 4 It is a schematic diagram of the vertical cross-section structure of the center of the pressure accumulator inner shell of the present invention.

[0021] Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B.

[0022] In the attached drawings: 100- housing, 110- recovery tank, 120- drain outlet, 130- oil drain outlet, 140- air outlet, 150- vertical partition, 310- pressure storage inner shell, 311- inlet flow channel, 312- air inlet, 320- driving motor, 331- transmission rod, 332- separation blade, 333- pressurization blade, 340- top cover, 341- diffusion hole, 342- guide groove, 343- connecting groove, 350- support foot, 410- spray head, 420- fixed grid, 421- spike, 430- water pipe, 440- return pipe, 500- air outlet, 610- condensation plate, 620- refrigerator, 630- driving roller, 640- driven roller, 650- absorption layer, 660- upper pressure roller, 670- lower pressure roller. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0027] Reference Figure 1 The oil ring vacuum negative pressure unit comprises a casing 100, a pressure storage mechanism, a spray mechanism and a vacuum pump, wherein a recovery tank 110 is arranged at the bottom of the casing 100, a drain port 120 and an oil drain port 130 connected to the recovery tank 110 are arranged at the bottom of the casing 100, the oil drain port 130 is located above the drain port 120, and an air outlet 140 is arranged on the top side of the casing 100; the pressure storage mechanism is located in the casing 100, a pressure storage chamber arranged upward is formed in the pressure storage mechanism, and a plurality of diffusion holes 341 connected to the pressure storage chamber are arranged on the top side of the pressure storage mechanism; the spray mechanism is located in the casing 100, the spray mechanism is located above the pressure storage mechanism, and the spray mechanism has a plurality of spray heads 410 arranged downward; the vacuum pump is connected to an air outlet pipe 500, and the air outlet pipe 500 passes through the casing 100 and is connected to the pressure storage chamber.

[0028] As can be seen from the above, when the vacuum pump is working, the gas discharged from the outlet pipe 500 is output to the pressure storage chamber of the pressure storage mechanism. At this time, the gas is pressurized in the pressure storage chamber and then discharged upward from the multiple diffusion holes 341 on the top side of the pressure storage mechanism, so that the discharged gas is fully diffused. Then the spray head 410 in the spray mechanism sprays downward, and the formed water mist is fully in contact with the gas diffused upward. The surface tension of the water droplets in the water mist is used to wrap the oil droplets in the gas, thereby capturing large particulate matter (such as oil droplets) in the gas. After that, it drips into the recovery tank 110 under the action of gravity, and the gas after removing the oil droplets continues to rise and is discharged from the air outlet 140 on the top side of the casing 100. Due to the different densities of water and oil, the water and oil accumulated in the recovery tank 110 will be layered up and down. When the oil accumulates enough, it can be discharged from the oil drain port 130 for recycling. In this way, the oil contained in the exhaust gas of the vacuum pump can be recycled, which not only improves the cleanliness of the gas, but also reduces the waste of oil, making it more environmentally friendly.

[0029] The pressure storage mechanism is mainly used to pressurize the gas so that the gas discharge can be diffused to the surroundings and more fully contact with the water mist. In the present embodiment, the pressure storage mechanism includes a pressure storage inner shell 310, a driving motor 320, a conveying paddle and a top cover 340. A support leg 350 is connected between the outer bottom side of the pressure storage inner shell 310 and the recovery tank 110. The pressure storage chamber is formed inside the pressure storage inner shell 310. The flow area of ​​the pressure storage chamber gradually decreases upward. The driving motor 320 is connected to the pressure storage inner shell 310. The driving motor 320 drives the conveying paddle. The driving motor 320 can drive the conveying paddle to rotate and generate an upward airflow. The top cover 340 is connected to the top side of the pressure storage inner shell 310. A plurality of diffusion holes 341 are formed on the top cover 340. A discharge valve is provided on the bottom side of the pressure storage inner shell 310.

[0030] In the pressure storage mechanism, when the gas enters the pressure storage chamber, the conveying slurry is driven to rotate by the driving motor 320, so that the gas can be transported upward. Since the flow area in the pressure storage chamber gradually decreases upward, the gas is gradually squeezed in the process of rising in the pressure storage chamber, and then released from the multiple diffusion holes 341 on the top cover 340. In addition, when the driving motor 320 drives the conveying slurry to rotate, the gas in the pressure storage chamber can be driven to rotate. At this time, the large particles of oil in the gas will be thrown to the inner wall of the pressure storage chamber under the action of centrifugal force, and form an oil film that gradually flows downward to the bottom of the pressure storage chamber, and finally discharged from the discharge valve. In this way, a double separation is achieved in the pressure storage chamber. First, the larger particles of oil droplets are separated and collected by centrifugal force, and then the gas is pressurized to increase the pressure of the gas when it is discharged from the pressure storage chamber. When discharging the pressure storage inner shell 310, the gas diffuses to the surroundings, and the gas is more fully in contact with the water mist formed by the spray head 410, thereby further improving the effect of capturing the remaining oil droplets in the gas by the surface tension of the water droplets in the water mist.

[0031] The conveying slurry can drive the gas to rotate to achieve the rotational separation of large oil droplets, and the gas can be pressurized for delivery. In order to further improve the effect of the conveying slurry in achieving these two functions, in this embodiment, Figure 4 As shown, the conveying paddle includes a transmission rod 331, a separation blade 332 and a pressurizing blade 333. The driving motor 320 is driven and connected to the transmission rod 331. The separation blade 332 is connected to the bottom of the transmission rod 331. The driving motor 320 drives the transmission rod 331 to rotate and enables the separation blade 332 to draw air upward. A plurality of separation blades 332 are arranged around the transmission rod 331. The pressurizing blade 333 is connected to the top of the transmission rod 331. The pressurizing blade 333 spirally extends upward around the transmission rod 331. The gas enters the pressure storage chamber and rotates in the pressure storage chamber driven by the separation blades 332. This can drive the gas to rotate in the pressure storage chamber so that the gas is evenly distributed in the pressure storage chamber. It is mainly at this position that the larger particles of oil droplets are separated and collected by centrifugal force. The gas can also be sent upward and the spiral pressurizing blades 333 are used to pressurize and transport the gas upward. By configuring different types of blades, the effect of separating oil droplets from the gas and pressurizing and discharging the gas in the pressure storage chamber is improved.

[0032] When the air outlet pipe 500 is connected to the pressure storage chamber, a connector can be directly set on the outside of the pressure storage inner shell 310 to connect the air outlet pipe 500 and the connector. At this time, the air outlet pipe 500 discharges air at a single position in the pressure storage chamber. In order to improve the uniformity of the air outlet, in this embodiment, an inlet flow channel 311 is arranged around the outside of the pressure storage inner shell 310, and a plurality of air inlet holes 312 are arranged between the inlet flow channel 311 and the pressure storage inner shell 310. The plurality of air inlet holes 312 are respectively located below the separation blades 332, and the air outlet pipe 500 is connected to the inlet flow channel 311. When the gas enters the pressure storage chamber, it first enters the inlet flow channel 311, and the gas flows along the inlet flow channel 311 around the pressure storage inner shell 310, and then enters the pressure storage chamber from the multiple inlet holes 312 of the inlet flow channel 311. This can further improve the distribution uniformity of the gas when it enters the pressure storage chamber, and the inlet hole 312 is located below the separation blade 332, which can reduce the mutual interference between the rotating airflow formed by the rotation of the separation blade 332 during air intake and reduce the noise generated during air intake.

[0033] After the gas discharged from the pressure storage chamber contacts the water mist, some oil droplets or water droplets fall on the top cover 340. The top cover 340 may be provided with an inclination to discharge the oil droplets or water droplets to the bottom of the housing 100. In order to further improve the recovery efficiency of the oil droplets or water droplets, in this embodiment, as shown in FIG. Figure 3As shown, the top cover 340 is in the shape of a cone that is small at the top and large at the bottom. A guide groove 342 extending away from the center is provided on the top side of the top cover 340. A plurality of guide grooves 342 are provided around the center of the top cover 340, and a connecting groove 343 is provided between two adjacent guide grooves 342. When the water mist droplets above the pressure accumulator inner shell 310 in the housing 100 fall on the top cover 340, the droplets can flow along the cone-shaped top cover 340 that is small at the top and large at the bottom toward the edge of the top cover 340. Since the guide groove 342 and the connecting groove 343 connecting between two adjacent guide grooves 342 are provided on the top side of the top cover 340, the convergence of the droplets can be accelerated, thereby improving the efficiency of the droplets flowing on the top side of the top cover 340.

[0034] As a specific structural embodiment of the spray mechanism, the spray mechanism includes a fixed grid 420, a water receiving pipe 430 and a shunt pipe. The fixed grid 420 is connected to the housing 100. A plurality of first vents are arranged on the fixed grid 420. The shunt pipe is connected to the fixed grid 420. A plurality of spray heads 410 are arranged on the shunt pipe. One end of the water receiving pipe 430 is connected to the housing 100, and the other end of the water receiving pipe 430 is connected to the shunt pipe. The fixed grid 420 provides support and fixation for the shunt pipe, and the mesh formed on the fixed grid 420 itself can form a first vent for gas to pass through. When in use, the shunt pipe supplies water to the plurality of spray heads 410, so that the plurality of spray heads 410 spray water mist into the pressure storage chamber, and the rising airflow is discharged upward from the first vent formed by the fixed grid 420 after passing through the water mist.

[0035] like Figure 2 As shown, further, a plurality of spikes 421 are connected to the bottom side of the fixed grid 420. When the gas encounters water mist to form bubbles during the rising process, the spikes 421 on the bottom side of the fixed grid 420 pierce the bubbles, so that the oil can fall onto the top cover 340, thereby improving the collection efficiency of the oil and preventing the bubbles from being directly combined with the oil and discharged upward during spraying.

[0036] The fixed grid 420 may be arranged horizontally, and in the present embodiment, at least two sides of the fixed grid 420 are inclined upward toward the middle, for example, two sides of the fixed grid 420 that are opposite to each other are inclined upward toward the middle, and at this time, the shape of the entire fixed grid 420 is an inverted V shape, or the four sides of the fixed grid 420 are inclined upward toward the middle, and at this time, the shape of the entire fixed grid 420 is a quadrangular pyramid, and a plurality of the diverter pipes are arranged at intervals on the fixed grid 420, and the water receiving pipe 430 is connected to the plurality of the diverter pipes. The fixed grid 420 is arranged obliquely, which can increase the space occupied in the up and down directions, and there are a plurality of diverter pipes, and each diverter pipe is provided with a plurality of sprinkler heads 410, so that the spray coverage can be increased and the uniformity of water supply to the sprinkler head 410 can be improved.

[0037] The spray water used by the sprinkler head 410 can be directly supplied from the outside, for example, the water receiving pipe 430 is connected to an external water supply tank or a municipal water pipe. Since the spray water is accumulated at the bottom of the housing 100, the water and the oil will be separated from each other. In order to better reuse the spray water, in this embodiment, a return pipe 440 is connected between the drain port 120 and the water receiving pipe 430. The water collected in the housing 100 can flow back to the water receiving pipe 430 through the return pipe 440, and water is re-supplied to the sprinkler head 410 through multiple diversion pipes, which can improve the water utilization rate.

[0038] In actual application, in order to reduce the discharge of unstratified oil from the return pipe 440, the water can be drained from the bottom of the housing 100 when the water accumulated at the bottom of the housing 100 is high enough, so as to reduce the impact of the newly introduced water and oil on the drainage. In addition, a transfer box can be installed between the return pipe 440 and the housing 100, and the sprinkler head 410 is stopped first, and the water at the bottom of the housing 100 is pumped into the transfer box. At this time, the phenomenon of pumping out the oil when the water and oil are not stratified can be effectively reduced. During spraying, the transfer box supplies water to the sprinkler head 410.

[0039] The present invention also includes a condensation mechanism, the condensation mechanism includes a condensation plate 610 and a refrigerator 620, the condensation plate 610 is connected to the housing 100, the condensation plate 610 is located above the spray mechanism, a plurality of second vents are arranged on the condensation plate 610, the condensation plate 610 is located on the top side of the condensation plate 610, and in addition, a heat preservation plate can be arranged at a position above the refrigerator 620 in the housing 100, and a third vent is arranged on the heat preservation plate. The rising airflow passes through the spray mechanism and then passes through the condensation plate 610. Since the refrigerator 620 cools the condensation plate 610, the condensation plate 610 maintains a relatively low temperature, and the heat preservation effect of the interior is improved by the heat preservation plate. When the airflow passes through the condensation plate 610 upward, water and oil can be further condensed and then dripped into the housing 100, so that the collection efficiency of water and oil can be further improved. The condensed gas passes through the second vents and then discharged from the third vents.

[0040] In order to further improve the collection efficiency of water vapor and oil in the gas after passing through the spray mechanism, a structure for absorbing water vapor and oil is set above the spray mechanism. Specifically, Figure 5 As shown, the condensing mechanism also includes a winding motor, an active roller 630, a driven roller 640 and an absorption layer 650, the active roller 630 and the driven roller 640 are respectively rotatably connected in the casing 100, the active roller 630 and the driven roller 640 are both located above the spray mechanism, the winding motor is connected in the casing 100, the winding motor is driven and connected to the active roller 630, the condensation plate 610 is in the shape of a sheet, the condensation plate 610 bypasses the active roller 630 and the driven roller 640 and is connected end to end, the refrigerator 620 is located in the space formed around the condensation plate 610, and the absorption layer 650 is connected to the side of the condensation plate 610 away from the refrigeration plate.

[0041] In this condensation mechanism, since an absorption layer 650 for absorbing water vapor and oil is provided on the outside of the condensation plate 610, for example, the absorption layer 650 is made of sponge, the condensation plate 610 can cool the sponge, and the sponge can be used to further reduce the loss of cold in the up and down directions. When the gas after passing through the spraying mechanism rises to the absorption layer 650, the water vapor and oil are first absorbed by the absorption layer 650. Since the condensation plate 610 cools the absorption layer 650, the efficiency of condensation and adsorption of water vapor and oil in the absorption layer 650 after condensation can be effectively improved, thereby further improving the efficiency of removing water vapor and oil in the gas. After continuous use for a period of time, the part of the absorption layer 650 facing the top of the spray mechanism will absorb a large amount of water vapor and oil. At this time, the winding motor can be started, and the winding motor drives the active roller 630 to rotate, and the active roller 630 drives the condensation plate 610 to rotate, thereby driving the absorption layer 650 outside the condensation plate 610 to move, so that the absorption layer 650 at other positions is facing the spray mechanism. At this time, the absorption layer 650 of this part can be used to continue to remove water vapor and oil in the gas. In the entire vacuum device, large particles in the gas are removed through rotational separation, and then the large particles remaining in the gas are captured again by water mist after pressurized diffusion. Finally, the absorption layer 650 is used to further absorb water vapor and residual oil. After three-step separation, adsorption and purification of the gas, the oil ring vacuum pump can effectively ensure the oil separation and recovery effect after the gas is discharged, and the number of shutdowns for maintenance of the vacuum device can be reduced by transferring and replacing the absorption position of the absorption layer 650.

[0042] In order to realize automatic cleaning of the absorption layer 650 and reduce the maintenance of the whole machine during use, in the present embodiment, a vertical partition 150 is arranged in the casing 100, and the vertical partition 150 divides the interior of the casing 100 in the horizontal direction to form a filter chamber and a reflux chamber, and a water flow gap is provided between the bottom end of the vertical partition 150 and the inner bottom wall of the casing 100, and an avoidance hole is arranged on the top of the vertical partition 150, the pressure storage mechanism and the spray mechanism are both located in the filter chamber, the driven roller 640 is located in the filter chamber, the active roller 630 and the winding motor are located in the reflux chamber, the condensation plate 610 passes through the avoidance hole, and an upper pressure roller 660 and a lower pressure roller 670 are rotatably connected in the reflux chamber, the upper pressure roller 660 abuts against the top side of the condensation plate 610 located below, and the lower pressure roller 670 abuts against the bottom side of the absorption layer 650 located below.

[0043] The interior of the housing 100 is divided into a filter chamber for removing oil from the gas after entering the housing 100 and a reflux chamber for recovering the water and oil cleaned out by the absorption layer 650 by using a vertical partition 150. Since the condensation plate 610 is connected end to end with the driven roller 640 after bypassing the active roller 630, a rotatable structure is formed. When working normally, the absorption layer 650 located at the bottom side of the lower filter plate in the filter chamber is mainly relied on to absorb water vapor and oil in the gas. When the absorption layer 650 needs to be updated, the winding motor drives the condensation plate 610 to rotate, and drives the absorption layer 650 in the filter chamber to the reflux chamber. When the absorption layer 650 passes through the upper pressure roller 660 and the lower pressure roller 670, the upper pressure roller 660 and the lower pressure roller 670 are used to absorb the absorption layer 6 50 is squeezed to squeeze out the absorbed water and oil, and the absorbed water and oil flow to the bottom of the reflux chamber and mix with the water and oil collected in the filter chamber. In this way, the absorbed water and solution can be actively squeezed out of the absorption layer 650, so that the absorption layer 650 can be rotated and recycled repeatedly to improve the absorption rate of water vapor and oil in the gas. In addition, since the water and oil squeezed out from the absorption layer 650 have a lower temperature, when they flow back to the bottom of the casing 100 and mix with the water and oil in the filter chamber, the overall temperature can be reduced. At this time, when the water at the bottom of the casing 100 is pumped to the spray head 410 for recycling, the re-entering gas can be pre-cooled to improve the effect of cooling and condensing the gas, and further enhance the effect of condensation and collection when it passes through the absorption layer 650 later.

[0044] The refrigerator 620 may be the cold end of a semiconductor refrigeration device. In this case, the cold end of the semiconductor refrigeration device is installed in the housing 100, and the hot end of the semiconductor refrigeration device is located outside the housing 100. The gas discharged from the housing 100 can be guided through the hot end of the semiconductor refrigeration device to increase the outlet temperature. Alternatively, the refrigerator 620 may be an evaporator. The refrigerator 620 is connected to a condenser, a compressor, and an expansion valve through a pipeline. The refrigerant circulates among the refrigerator 620, the condenser, the compressor, and the expansion valve. When the refrigerant passes through the refrigerator 620, it absorbs heat, thereby cooling the refrigeration plate.

[0045] The preferred embodiments of the present invention are specifically described above, but the invention is not limited to the embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. Oil ring vacuum negative pressure unit, characterized by: include: A casing (100), with a recovery tank (110) provided at the bottom, a water outlet (120) and an oil outlet (130) connected to the recovery tank (110) provided at the bottom of the casing (100), the oil outlet (130) being located above the water outlet (120), and an air outlet (140) provided at the top side of the casing (100); A pressure storage mechanism is located in the housing (100) and is formed with a pressure storage chamber arranged upward, and a top side of the pressure storage mechanism is provided with a plurality of diffusion holes (341) connected to the pressure storage chamber; A spray mechanism, located in the housing (100) and above the pressure storage mechanism, the spray mechanism having a plurality of spray heads (410) arranged downward; A vacuum pump connected to an air outlet pipe (500), wherein the air outlet pipe (500) passes through the casing (100) and is connected to the pressure storage chamber; A condensing mechanism, the condensing mechanism comprising a condensing plate (610) and a refrigerator (620), the condensing plate (610) being connected to the housing (100), the condensing plate (610) being located above the spraying mechanism, the condensing plate (610) being provided with a plurality of second vent holes, the condensing mechanism further comprising a winding motor, a driving roller (630), a driven roller (640) and an absorption layer (650), the driving roller (630) and the driven roller (640) being respectively rotatably connected to the housing (100) and the cooling device (620). The active roller (630) and the driven roller (640) are both located above the spray mechanism, the winding motor is connected to the housing (100), the winding motor is driven and connected to the active roller (630), the condensation plate (610) is in the shape of a sheet, the condensation plate (610) bypasses the active roller (630) and is connected end to end with the driven roller (640), and the refrigerator (620) is located in a space formed by the condensation plate (610). The absorption layer (650) is connected to a side of the condensing plate (610) away from the refrigerator (620), a vertical partition (150) is arranged in the casing (100), and the vertical partition (150) divides the interior of the casing (100) in a horizontal direction to form a filter chamber and a reflux chamber, a water flow gap is provided between the bottom end of the vertical partition (150) and the inner bottom wall of the casing (100), and an avoidance hole is provided on the top of the vertical partition (150), and the pressure storage mechanism and the spray nozzle are The shower mechanism is located in the filter chamber, the driven roller (640) is located in the filter chamber, the active roller (630) and the winding motor are located in the reflux chamber, the condensation plate (610) passes through the avoidance hole, and an upper pressure roller (660) and a lower pressure roller (670) are rotatably connected in the reflux chamber, the upper pressure roller (660) is against the top side of the condensation plate (610) located below, and the lower pressure roller (670) is against the bottom side of the absorption layer (650) located below.

2. The oil ring vacuum negative pressure unit according to claim 1, characterized in that: The pressure storage mechanism comprises a pressure storage inner shell (310), a drive motor (320), a conveying paddle and a top cover (340); a support foot (350) is connected between the outer bottom side of the pressure storage inner shell (310) and the recovery tank (110); the pressure storage chamber is formed inside the pressure storage inner shell (310); the flow area of ​​the pressure storage chamber gradually decreases upwards; the drive motor (320) is connected to the pressure storage inner shell (310); the drive motor (320) drives the conveying paddle; the drive motor (320) can drive the conveying paddle to rotate and generate an ascending airflow; the top cover (340) is connected to the top side of the pressure storage inner shell (310); a plurality of diffusion holes (341) are formed on the top cover (340); and a discharge valve is provided on the bottom side of the pressure storage inner shell (310).

3. The oil ring vacuum negative pressure unit according to claim 2, characterized in that: The conveying paddle comprises a transmission rod (331), a separation blade (332) and a pressurizing blade (333); the driving motor (320) is connected to the transmission rod (331) by driving; the separation blade (332) is connected to the bottom of the transmission rod (331); the driving motor (320) drives the transmission rod (331) to rotate and enables the separation blade (332) to draw air upwards; a plurality of separation blades (332) are arranged around the transmission rod (331); the pressurizing blade (333) is connected to the top of the transmission rod (331); and the pressurizing blade (333) spirally extends upwards around the transmission rod (331).

4. The oil ring vacuum negative pressure unit according to claim 3, characterized in that: An intake air duct (311) is arranged around the outer side of the pressure accumulator inner shell (310), a plurality of air intake holes (312) are arranged between the intake air duct (311) and the pressure accumulator inner shell (310), the plurality of air intake holes (312) are respectively located below the separation blades (332), and the air outlet pipe (500) is connected to the intake air duct (311).

5. The oil ring vacuum negative pressure unit according to claim 2, characterized in that: The top cover (340) is in the shape of a cone that is smaller at the top and larger at the bottom. A guide groove (342) extending in a direction away from the center of the top cover (340) is provided on the top side of the top cover (340). A plurality of guide grooves (342) are provided around the center of the top cover (340), and a connecting groove (343) is provided between two adjacent guide grooves (342).

6. The oil ring vacuum negative pressure unit according to claim 1, characterized in that: The spray mechanism comprises a fixed grid (420), a water receiving pipe (430) and a diversion pipe, wherein the fixed grid (420) is connected to the housing (100), a plurality of first vent holes are arranged on the fixed grid (420), the diversion pipe is connected to the fixed grid (420), a plurality of the spray heads (410) are arranged on the diversion pipe, one end of the water receiving pipe (430) is connected to the housing (100), and the other end of the water receiving pipe (430) is connected to the diversion pipe.

7. The oil ring vacuum negative pressure unit according to claim 6, characterized in that: A plurality of spikes (421) are connected to the bottom side of the fixed grid (420).

8. The oil ring vacuum negative pressure unit according to claim 6, characterized in that: At least two sides of the fixed grid frame (420) are inclined upwards towards the middle, a plurality of diversion pipes are arranged at intervals on the fixed grid frame (420), and the water receiving pipe (430) is connected to the plurality of diversion pipes.

9. The oil ring vacuum negative pressure unit according to claim 6, characterized in that: A water return pipe (440) is connected between the water outlet (120) and the water receiving pipe (430).

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