An integrated circulating liquid cooling dry vacuum unit and a method of using the same

Abstract

This invention discloses an integrated circulating liquid-cooled dry vacuum unit, comprising a housing, a vacuum main unit, a piping system, a cooling system, and a refrigeration system. The vacuum main unit includes a Roots vacuum pump and a screw vacuum pump, which are mounted opposite each other on the outside of the housing. The cooling system is located inside the housing and includes a storage tank for storing coolant. The piping system connects the vacuum main unit, the cooling system, and the refrigeration system to achieve coolant circulation. The refrigeration system is located inside the housing and is used to cool the coolant after heat exchange. The beneficial effect of this invention is that it solves the technical problem that existing vacuum unit cooling devices have low cooling efficiency for coolant, resulting in ineffective heat dissipation from the vacuum unit and thus reducing its working efficiency.

Description

Technical Field

[0001] This invention relates to the field of vacuum unit technology, specifically to an integrated circulating liquid-cooled dry vacuum unit and its usage method. Background Technology

[0002] Currently, Roots vacuum pumps and screw vacuum pumps generally adopt external circulating water cooling or air cooling. When using external plant circulating water, the water temperature and water quality are uncontrollable. If the water temperature is too low, some condensable gases will condense in the pump chamber. If the water temperature is too high, heat will accumulate due to untimely heat dissipation, affecting the cooling effect of the vacuum unit and easily causing equipment failure.

[0003] Chinese patent CN219795570U proposes a "closed-loop cooling system for Roots reciprocating vacuum units". In this device, the coolant is poured into the water tank from the top and extracted from the bottom of the water tank. Therefore, the extracted coolant can ensure the cooling of the Roots pump. The coolant is cooled after being transported to the water tank, thus avoiding the temperature rise of the Roots pump body and coolant during use, which would affect the efficiency and lifespan. Although the device has a certain heat dissipation effect, its heat dissipation efficiency is low and it cannot effectively and quickly cool the coolant, which will affect the operating efficiency of the vacuum unit. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned technical deficiencies and provide an integrated circulating liquid-cooled dry vacuum unit and its usage method, which solves the technical problem that the cooling equipment of the vacuum unit in the prior art has low cooling efficiency for the coolant, which ultimately fails to effectively dissipate heat from the vacuum unit and thus reduces the working efficiency of the vacuum unit.

[0005] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides an integrated circulating liquid-cooled dry vacuum unit and its method of use, comprising:

[0007] It includes the housing, vacuum unit, piping system, cooling system, and refrigeration system;

[0008] The vacuum unit includes a Roots vacuum pump and a screw vacuum pump, which are mounted opposite each other on the outside of the housing.

[0009] The cooling mechanism is located inside the housing, and the cooling mechanism includes a storage tank for storing coolant;

[0010] The pipeline system is connected to the vacuum main unit, the cooling mechanism and the refrigeration mechanism respectively, so as to realize the circulation and transportation of coolant;

[0011] The refrigeration mechanism is arranged inside the housing to cool the coolant after heat exchange and, together with the flow guiding mechanism, guides the cooled coolant back into the storage tank.

[0012] In some embodiments, the piping system includes two inlet pipes, two outlet pipes, a return pipe, and a guide pipe; the two inlet pipes are respectively connected to the Roots vacuum pump and the screw vacuum pump, and their ends are connected to the liquid storage tank through a first tee pipe; the two outlet pipes are respectively connected to the Roots vacuum pump and the screw vacuum pump, and their ends are connected to the return pipe through a second tee pipe; the end of the return pipe extends into the refrigeration mechanism, the end of the refrigeration mechanism is connected to the guide pipe, and the end of the guide pipe is connected to the liquid storage tank.

[0013] In some embodiments, the upper and lower ends of the liquid storage tank are provided with sleeves, and a rotating component is provided on the outside of the sleeve, located inside the tank and a limiting ring is also provided on the outer periphery of the liquid storage tank.

[0014] In some embodiments, the rotating component includes a mounting gear, a motor, and a drive gear; the mounting gear is connected to the outside of the sleeve, and the motor is mounted on the top of the inner cavity of the housing. The output end of the motor is connected to the drive gear, and the drive gear meshes with the outer wall of the mounting gear. A rotatable rotating shaft is provided on the inner wall of the limiting ring.

[0015] In some embodiments, the refrigeration mechanism includes a refrigeration chamber with a serpentine arrangement of cooling pipes inside. One end of the cooling pipe is connected to the return pipe, and the other end is connected to the liquid guide pipe. A top refrigeration component and a bottom refrigeration component are also provided at the top and bottom of the inner cavity of the refrigeration chamber.

[0016] In some embodiments, the top cooling component includes a first motor, a first main gear, and a plurality of second auxiliary gears; the first motor is mounted on the top of the inner cavity of the cooling box, and its output end is connected to the first main gear; the plurality of second auxiliary gears are equidistantly arranged in the cooling box, and a top gear chain is connected between the first main gear and the plurality of second auxiliary gears; top fan blades are provided on the first main gear and the plurality of second auxiliary gears.

[0017] The bottom cooling component includes a second motor, a second main gear, and several second auxiliary gears; the second motor is installed at the bottom of the inner cavity of the cooling box, and the output end of the second motor is equipped with the second main gear; several second auxiliary gears are equidistantly arranged at the bottom of the inner cavity of the cooling box, and a bottom gear chain is connected between the second main gear and several second auxiliary gears; bottom fan blades are installed on both the second main gear and several second auxiliary gears.

[0018] In some embodiments, the airflow guiding mechanism includes an external box and a wind deflector; the external box is also connected to both sides of the refrigeration box, and a plurality of ventilation openings are provided on the external box. The wind deflector 652 is slidably connected to the external box and is used to adjust the opening size of the ventilation openings.

[0019] In some embodiments, the windbreak includes a baffle plate, a plurality of electrically operated telescopic rods, and a buffer member; the baffle plate is slidably connected to the inside of the refrigeration box, and the plurality of electrically operated telescopic rods are installed on the top of the inner cavity of the refrigeration box. The telescopic ends of the electrically operated telescopic rods are connected to the baffle plate and are used to push the baffle plate to move. The baffle plate has a plurality of strip-shaped openings that cooperate with the ventilation openings, and a buffer member is provided at the bottom of the inner cavity of the refrigeration box.

[0020] In some embodiments, the buffer includes a plurality of spring bars and a limiting plate, wherein the plurality of spring bars are equidistantly arranged at the bottom of the inner cavity of the refrigeration box, and the limiting plate is connected to the top of the spring bars.

[0021] In some embodiments, the following steps are included:

[0022] S1. Start the equipment. The coolant from the storage tank is delivered to the vacuum unit outside the tank through the pipeline system to exchange heat and cool the operating vacuum unit.

[0023] S2. The coolant, after absorbing heat, is transported from the vacuum unit to the refrigeration unit inside the chamber through the pipeline system.

[0024] S3. Operate the refrigeration mechanism to cool the coolant after heat exchange;

[0025] S4. The cooled coolant, after cooling is completed, is transported back to the coolant reservoir of the cooling system for storage through the flow guiding mechanism and pipeline system.

[0026] Compared with existing technologies, the integrated circulating liquid-cooled dry vacuum unit provided by this invention connects various components through a pipeline system to form a closed-loop coolant circulation circuit. The storage tank continuously supplies coolant to exchange heat and cool the vacuum main unit. After heat exchange, the coolant is centrally cooled by the refrigeration mechanism inside the tank and flows back to the storage tank for reuse with the help of the flow guiding mechanism. This not only removes the heat generated by the equipment in a timely manner and avoids pump overheating failure, but also ensures the stable operation of the unit for a long time. It solves the problems of uncontrollable water temperature and quality and insufficient natural heat dissipation efficiency of traditional external water cooling. At the same time, the entire circulation process is automated, which greatly reduces manual intervention and maintenance costs. The enclosure can effectively protect the internal liquid cooling and refrigeration components, and the external main unit is convenient for daily maintenance. Moreover, the closed liquid circuit meets the requirements for clean operation of dry vacuum units, making it more practical and adaptable. Attached Figure Description

[0027] Figure 1 This is a cross-sectional view of the integrated circulating liquid-cooled dry vacuum unit provided in an embodiment of the present invention;

[0028] Figure 2 This is a schematic diagram of the interior of the integrated circulating liquid-cooled dry vacuum unit provided in an embodiment of the present invention;

[0029] Figure 3 In the integrated circulating liquid-cooled dry vacuum unit provided in the embodiments of the present invention Figure 1 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the interior of the refrigeration chamber of the integrated circulating liquid-cooled dry vacuum unit provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the assembly of the top and bottom cooling components of the integrated circulating liquid-cooled dry vacuum unit provided in this embodiment of the invention;

[0032] Figure 6 This is a side view of the refrigeration chamber of the integrated circulating liquid-cooled dry vacuum unit provided in an embodiment of the present invention;

[0033] Figure 7 This is a schematic diagram of the internal structure of the external casing of the integrated circulating liquid-cooled dry vacuum unit provided in this embodiment of the invention;

[0034] Figure 8 This is a side view of the external casing of the integrated circulating liquid-cooled dry vacuum unit provided in an embodiment of the present invention;

[0035] Figure 9 This is a three-dimensional schematic diagram of the external casing of the integrated circulating liquid-cooled dry vacuum unit provided in an embodiment of the present invention.

[0036] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Roots vacuum pump; 3. Screw vacuum pump; 4. Piping mechanism; 41. Inlet pipe; 42. Outlet pipe; 43. Return pipe; 44. Guide pipe; 5. Cooling mechanism; 51. Storage tank; 501. Sleeve; 52. Rotating component; 521. Mounting gear; 522. Motor; 523. Drive gear; 53. Limiting ring; 531. Rotating shaft; 6. Refrigeration mechanism; 61. Refrigeration box; 62. Cooling pipe; 63. Top refrigeration component; 631. First motor; 632. First main gear; 633, Second auxiliary gear; 634, Top fan blade; 635, Top gear chain; 64, Bottom cooling component; 641, Second motor; 642, Second main gear; 643, Second auxiliary gear; 644, Bottom fan blade; 645, Bottom gear chain; 65, Air guide mechanism; 651, External housing; 6511, Ventilation opening; 652, Wind deflector; 6521, Baffle plate; 6522, Electric telescopic rod; 6523, Strip-shaped opening; 66, Buffer component; 661, Spring strip; 662, Limiting plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of an integrated circulating liquid-cooled dry vacuum unit according to an embodiment of the present invention. The integrated circulating liquid-cooled dry vacuum unit includes:

[0039] It includes a housing 1, a vacuum main unit, a piping system 4, a cooling system 5, and a refrigeration system 6;

[0040] The vacuum unit includes a Roots vacuum pump 2 and a screw vacuum pump 3, which are mounted opposite each other on the outside of the housing 1.

[0041] The cooling mechanism 5 is located inside the housing 1, and the cooling mechanism 5 includes a liquid storage tank 51 for storing coolant;

[0042] Piping mechanism 4 is connected to vacuum main unit, cooling mechanism 5 and refrigeration mechanism 6 respectively to realize the circulation and transportation of coolant;

[0043] The refrigeration unit 6 is located inside the housing 1 and is used to cool the coolant after heat exchange, and works with the flow guiding mechanism 65 to guide the cooled coolant back into the storage tank 51.

[0044] In this embodiment, a closed-loop coolant circulation loop is formed by connecting various components through the pipeline mechanism 4. The storage tank 51 continuously supplies coolant to exchange heat and cool the vacuum main unit. After heat exchange, the coolant is centrally cooled by the refrigeration mechanism 6 inside the tank and flows back to the storage tank 51 for recycling in conjunction with the flow guiding mechanism 65. This can remove the heat from the equipment in time, avoid pump overheating failure, and ensure the unit operates stably for a long time. It solves the problems of uncontrollable water temperature and water quality and insufficient natural heat dissipation efficiency of traditional external water cooling. At the same time, the entire circulation process is automated, which greatly reduces manual intervention and maintenance costs. The housing 1 can effectively protect the internal liquid cooling and refrigeration components. The external main unit is also convenient for daily maintenance. Moreover, the closed liquid circuit meets the requirements for clean operation of dry vacuum units, making it more practical and adaptable.

[0045] In one embodiment, please refer to Figure 1 - Figure 5 To improve the flow efficiency of the liquid, the pipeline mechanism 4 includes two inlet pipes 41, two outlet pipes 42, a return pipe 43, and a guide pipe 44. The two inlet pipes 41 are respectively connected to the Roots vacuum pump 2 and the screw vacuum pump 3, and their ends are connected to the liquid storage tank 51 through a first tee pipe. The two outlet pipes 42 are respectively connected to the Roots vacuum pump 2 and the screw vacuum pump 3, and their ends are connected to the return pipe 43 through a second tee pipe. The end of the return pipe 43 extends into the refrigeration mechanism 6, and the end of the refrigeration mechanism 6 is connected to the guide end. The end of the guide pipe 44 is connected to the liquid storage tank 51.

[0046] In this embodiment, the coolant in the storage tank 51 is transported to the first three-way pipe by an external pump, and then split into two inlet pipes 41, which are respectively sent to the Roots vacuum pump 2 and the screw vacuum pump 3 to complete heat absorption and exchange. The heated coolant flows out from the outlet pipes 42 of the two devices, collects in the second three-way pipe and enters the return pipe 43. Under the action of the pump, it is transported to the refrigeration mechanism 6 for cooling. The cooled coolant is connected to the guide pipe 44 and then transported back to the storage tank 51 by the pump, thus continuously completing the closed-loop cycle.

[0047] In one embodiment, please refer to Figure 1 - Figure 5 To improve the antifreeze effect of the liquid storage tank 51, sleeves 501 are provided at both the upper and lower ends of the liquid storage tank 51, and a rotating component 52 is provided on the outside of the sleeve 501. A limit ring 53 is also provided on the outer periphery of the liquid storage tank 51 inside the tank body 1. The rotating component 52 includes a mounting gear 521, a motor 522, and a drive gear 523. The mounting gear 521 is connected to the outside of the sleeve 501, and the motor 522 is installed on the top of the inner cavity of the tank body 1. The output end of the motor 522 is connected to the drive gear 523, and the drive gear 523 meshes with the outer wall of the mounting gear 521. A rotatable rotating shaft 531 is provided on the inner wall of the limit ring 53.

[0048] In this embodiment, the motor 522 drives the drive gear 523 to rotate, and through gear meshing, the mounting gear 521, along with the sleeve 501 and the liquid storage tank 51, rotate together. This keeps the coolant inside the liquid storage tank 51 in a constant state of flow, effectively preventing the liquid from freezing in low-temperature environments, improving the overall anti-freeze capability of the equipment, and ensuring the normal operation of the unit under low-temperature conditions. The sleeves 501 at both ends of the liquid storage tank 51 serve as connecting carriers, which not only securely mount the mounting gear 521 but also ensure that the structure is subjected to uniform stress when the liquid storage tank 51 rotates, reducing operational jamming and component wear. The limiting ring 53 set inside the housing 1 around the liquid storage tank 51, together with the rotating shaft 531 on its inner wall, can limit and support the rotating liquid storage tank 51. The structure constrains the rotation trajectory and prevents the housing 1 from deviating, improving the stability and safety of the operation process. At the same time, the rotating shaft 531 can rotate synchronously with the liquid storage tank 51, reducing frictional resistance and making the overall transmission operation smoother. It should be noted that the sleeves 501 at both ends of the liquid storage tank are connected to the conduits. When the liquid storage tank 51 rotates with the rotating component 52, the sleeves 501 can rotate freely around the conduits without relative torsion between them, which can also completely avoid the problems of pipe twisting and pulling, ensuring that the coolant passage is always unobstructed. At the same time, this rotating connection structure does not affect the normal liquid delivery of the conduits. While achieving continuous rotation and antifreeze of the liquid storage tank 51, it takes into account the reliability of mechanical rotation and the stability of pipeline delivery, so that the rotation and liquid delivery functions do not interfere with each other.

[0049] In one embodiment, please refer to Figure 1 - Figure 9To improve the cooling effect on the coolant, the refrigeration mechanism 6 includes a refrigeration box 61, inside which are arranged serpentine cooling pipes 62. One end of the cooling pipes 62 is connected to the return pipe 43, and the other end is connected to the guide pipe 44. A top refrigeration component 63 and a bottom refrigeration component 64 are also provided at the top and bottom of the inner cavity of the refrigeration box 61. The top refrigeration component 63 includes a first motor 631, a first main gear 632, and several second auxiliary gears 633 and 643. The first motor 631 is installed at the top of the inner cavity of the refrigeration box 61, and its output end is connected to the first main gear 632. The several second auxiliary gears 633 and 643 are equidistantly arranged. The cooling unit 64 is placed inside the refrigeration chamber 61, and a top gear chain 635 is connected between the first main gear 632 and several second auxiliary gears 633643. Top fan blades 634 are provided on both the first main gear 632 and several second auxiliary gears 633643. The bottom cooling component 64 includes a second motor 641, a second main gear 642, and several second auxiliary gears 633643. The second motor 641 is installed at the bottom of the inner cavity of the refrigeration chamber 61, and the output end of the second motor 641 is equipped with the second main gear 642. Several second auxiliary gears 633643 are equidistantly arranged at the bottom of the inner cavity of the refrigeration chamber 61. A bottom gear chain 645 is connected between the main gear 642 and several second auxiliary gears 633643; bottom fan blades 644 are installed on both the main gear 642 and several second auxiliary gears 633643; the flow guiding mechanism 65 includes an outer box 651 and a wind deflector 652; the two sides of the refrigeration box 61 are also connected to the outer box 651, which has several ventilation openings 6511. The wind deflector 652 is slidably connected inside the outer box 651 and is used to adjust the opening size of the ventilation openings 6511. The wind deflector 652 includes a baffle 6521, several electric telescopic rods 6522 and a buffer 66; A baffle 6521 is slidably connected to the inside of the refrigeration box 61, and several electric telescopic rods 6522 are installed on the top of the inner cavity of the refrigeration box 61. The telescopic ends of the electric telescopic rods 6522 are connected to the baffle 6521 and are used to push the baffle 6521 to move. Several strip-shaped openings 6523 that cooperate with the ventilation openings 6511 are provided on the baffle 6521. A buffer 66 is provided at the bottom of the inner cavity of the refrigeration box 61. The buffer 66 includes several spring strips 661 and a limiting plate 662. Several spring strips 661 are equidistantly arranged at the bottom of the inner cavity of the refrigeration box 61, and the top of the spring strips 661 is connected to the limiting plate 662.

[0050] In this embodiment, the cooling box 61 uses a serpentine cooling pipe 62, which significantly extends the flow path of the coolant within the cooling box 61 compared to a straight pipe, increasing the contact area and heat exchange time between the coolant and the cold air inside the box. This allows the high-temperature coolant to fully dissipate heat, significantly improving the overall cooling efficiency and ensuring uniform and stable cooling effect. Simultaneously, the two ends of the pipe are connected to the return pipe 43 and the guide pipe 44, respectively, smoothly receiving the upstream high-temperature coolant and outputting the cooled coolant, ensuring continuous and uninterrupted liquid cooling circulation. The top cooling component 63 and the bottom cooling component 64 are each powered by an independent electric motor. The machine consists of a main gear, a secondary gear, and a gear chain. The first motor 631 and the second motor 641 drive the corresponding main gears, which in turn drive all the secondary gears to rotate synchronously via the gear chain. This ensures that the top fan blades 634 and the bottom fan blades 644 operate fully. The two sets of fan blades are positioned in the upper and lower areas of the refrigeration chamber 61, creating omnidirectional, forced air convection within the chamber, quickly removing heat from the surface of the cooling pipes 62 and further enhancing heat exchange capacity. The gear chain drive provides smooth transmission, and the synchronous operation of multiple fan blades ensures good consistency, reducing the likelihood of individual blades stopping. This results in high mechanical reliability. The cold box 61 is connected to an outer box 651 with ventilation openings 6511 on both sides. This, along with a sliding baffle 652, allows for air intake and exhaust adjustment. An electric telescopic rod 6522 can push the baffle 6521 to slide back and forth. By utilizing the misalignment / alignment of the strip opening 6523 on the baffle 6521 with the ventilation opening 6511 of the outer box 651, the effective opening area of ​​the ventilation opening 6511 can be freely changed. When the ambient temperature is high and the coolant temperature rises significantly, the ventilation opening is increased to enhance airflow and heat dissipation. In low-temperature environments or when the equipment is operating under low load, the ventilation opening is reduced to minimize cold loss and prevent cooling. Excessive cooling of the liquid can dynamically match the heat dissipation demand according to the working conditions and ambient temperature to achieve energy-saving operation. At the same time, it can also prevent a large amount of low-temperature airflow from blowing directly into the pipeline, reducing the risk of condensation in the pipeline. The bottom of the refrigeration box 61 is equipped with a buffer 66 consisting of a spring strip 661 and a limiting plate 662, which can buffer and dampen the downward-moving baffle 6521 and the moving parts inside the box, preventing hard impacts when the parts slide into place, reducing impact noise, and mitigating the problem of loosening of parts caused by mechanical impact. The limiting plate 662, together with the spring strip 661, can limit the maximum downward stroke of the baffle 6521.

[0051] To better understand this invention, the following is combined with... Figures 1 to 9 The technical solution of the present invention will be described in detail below:

[0052] S1. The entire equipment is powered on and started. Motor 522, first motor 631, second motor 641, electric telescopic rod 6522, and liquid pump all enter standby mode. The Roots vacuum pump 2 and screw vacuum pump 3 outside the housing 1 start to operate. The two vacuum pumps continuously generate heat during operation. The liquid storage tank 51 of the cooling mechanism 5 inside the housing 1 stores coolant. The sleeves 501 at the upper and lower ends of the liquid storage tank 51 are fitted on the outside of the guide tube. The sleeves 501 and the guide tube are rotatably connected, and the pipeline can pass through normally without entanglement. At the same time, the limiting ring 53 and the rotating shaft 531 on the inner wall form radial limiting and auxiliary support for the liquid storage tank 51 to ensure smooth subsequent rotation.

[0053] S2. Start the matching liquid pump. The coolant in the storage tank 51 is drawn out and transported to the first three-way pipe. After being split by the first three-way pipe, it enters the two inlet pipes 41 respectively. The two coolants are simultaneously sent into the running Roots vacuum pump 2 and screw vacuum pump 3. The coolant comes into full contact with the pump body to complete heat exchange. After absorbing the heat generated by the operation of the vacuum pump, its own temperature rises. The heated coolant flows out from the corresponding outlet pipes 42 of the two vacuum pumps respectively. The coolant from the two outlet pipes 42 merges into the second three-way pipe and then flows into the return pipe 43. Under the continuous transport action of the liquid pump, the high temperature coolant enters the refrigeration box 61 of the refrigeration mechanism 6 along the return pipe 43.

[0054] S3. After the high-temperature coolant enters the refrigeration chamber 61, it flows through the serpentine cooling pipe 62 inside the chamber. The serpentine structure extends the flow path of the coolant, increasing the heat exchange area and heat exchange time. The first motor 631 drives the first main gear 632 to rotate, which in turn drives all the second auxiliary gears 633 and 643 to rotate synchronously through the top gear chain 635, causing all the top fan blades 634 to rotate. The second motor 641 drives the second main gear 642 to rotate, which in turn drives the bottom second auxiliary gears 633 and 643 to work synchronously with the bottom fan blades 644 through the bottom gear chain 645. The two sets of fan blades form a full-area forced convection within the refrigeration chamber 61, quickly removing the heat from the surface of the cooling pipe 62 and continuously cooling the coolant inside the pipe. The staff can control the extension and retraction of the electric telescopic rod 6522 according to the ambient temperature and equipment load, and push the baffle 6521 to slide inside the outer box 651. By aligning or misaligning the strip opening 6523 on the baffle 6521 with the ventilation opening 6511 of the outer box 651, the opening and closing size of the ventilation opening 6511 can be adjusted, thereby controlling the airflow inside and outside the refrigeration box 61 to adapt to different heat dissipation needs. When the baffle 6521 slides downward, it will contact the buffer 66 at the bottom of the refrigeration box 61, which is composed of a spring strip 661 and a limiting plate 662. The spring strip 661 deforms to absorb the impact force, and the limiting plate 662 limits the maximum downward distance of the baffle 6521 to avoid damage from impact and scratches.

[0055] S4. After being sufficiently cooled by the serpentine cooling pipe 62, the coolant flows from the end of the cooling pipe 62 into the liquid guide pipe 44. Under the action of the liquid pump, the cooled coolant flows back to the liquid storage tank 51 along the liquid guide pipe 44 for temporary storage. Simultaneously, the motor 522 matched with the liquid storage tank 51 is started. The motor 522 drives the drive gear 523 to rotate. The drive gear 523 meshes with the mounting gear 521, thereby driving the sleeve 501 and the liquid storage tank 51 to rotate at a uniform speed. The coolant inside the liquid storage tank 51 flows continuously with the tank body 1. Combined with the rotational cooperation structure of the sleeve 501 and the guide pipe, the coolant is prevented from freezing in low temperature environment while ensuring normal liquid delivery and preventing tangling.

[0056] S5. After the coolant returns to the storage tank 51, it enters the next cycle. The entire equipment relies on the continuous cooperation of the pipeline mechanism 4, the cooling mechanism 5, and the refrigeration mechanism 6 to form an uninterrupted closed-loop liquid cooling cycle. The Roots vacuum pump 2 and the screw vacuum pump 3 are always cooled by the circulating coolant, and the equipment maintains continuous and stable operation until the whole machine stops being powered.

[0057] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An integrated circulating liquid-cooled dry vacuum unit, characterized in that, It includes the housing, vacuum unit, piping system, cooling system, and refrigeration system; The vacuum unit includes a Roots vacuum pump and a screw vacuum pump, which are mounted opposite each other on the outside of the housing. The cooling mechanism is located inside the housing, and the cooling mechanism includes a storage tank for storing coolant; The pipeline system is connected to the vacuum main unit, the cooling mechanism and the refrigeration mechanism respectively, so as to realize the circulation and transportation of coolant; The refrigeration mechanism is arranged inside the housing to cool the coolant after heat exchange and, together with the flow guiding mechanism, guides the cooled coolant back into the storage tank.

2. The integrated circulating liquid-cooled dry vacuum unit according to claim 1, characterized in that: The piping system includes two inlet pipes, two outlet pipes, a return pipe, and a guide pipe. The two inlet pipes are respectively connected to the Roots vacuum pump and the screw vacuum pump, and their ends are connected to the liquid storage tank through a first tee pipe. The two outlet pipes are respectively connected to the Roots vacuum pump and the screw vacuum pump, and their ends are connected to the return pipe through a second tee pipe. The end of the return pipe extends into the refrigeration mechanism, and the end of the refrigeration mechanism is connected to the guide pipe. The end of the guide pipe is also connected to the liquid storage tank.

3. The integrated circulating liquid-cooled dry vacuum unit according to claim 1, characterized in that: Both the upper and lower ends of the liquid storage tank are provided with sleeves, and a rotating component is provided on the outside of the sleeve. The sleeve is located inside the tank, and a limit ring is also provided on the outer periphery of the liquid storage tank.

4. The integrated circulating liquid-cooled dry vacuum unit according to claim 3, characterized in that: The rotating component includes a mounting gear, a motor, and a drive gear; the mounting gear is connected to the outside of the sleeve, and the motor is mounted on the top of the inner cavity of the housing. The output end of the motor is connected to the drive gear, and the drive gear meshes with the outer wall of the mounting gear. A rotatable rotating shaft is provided on the inner wall of the limiting ring.

5. The integrated circulating liquid-cooled dry vacuum unit according to claim 1, characterized in that: The refrigeration mechanism includes a refrigeration box, inside which are arranged serpentine cooling pipes. One end of the cooling pipe is connected to the return liquid pipe, and the other end is connected to the liquid guide pipe. Top refrigeration components and bottom refrigeration components are also provided at the top and bottom of the inner cavity of the refrigeration box.

6. The integrated circulating liquid-cooled dry vacuum unit according to claim 5, characterized in that: The top cooling component includes a first motor, a first main gear, and several second auxiliary gears; the first motor is installed at the top of the inner cavity of the cooling box, and its output end is connected to the first main gear; several second auxiliary gears are equidistantly arranged inside the cooling box, and a top gear chain is connected between the first main gear and several second auxiliary gears; top fan blades are provided on the first main gear and several second auxiliary gears. The bottom cooling component includes a second motor, a second main gear, and several second auxiliary gears; the second motor is installed at the bottom of the inner cavity of the cooling box, and the output end of the second motor is equipped with the second main gear; several second auxiliary gears are equidistantly arranged at the bottom of the inner cavity of the cooling box, and a bottom gear chain is connected between the second main gear and several second auxiliary gears; bottom fan blades are installed on both the second main gear and several second auxiliary gears.

7. The integrated circulating liquid-cooled dry vacuum unit according to claim 6, characterized in that: The airflow guiding mechanism includes an external box and a wind deflector; the two sides of the refrigeration box are also connected to the external box, and the external box has several ventilation openings. The wind deflector 652 is slidably connected inside the external box and is used to adjust the opening size of the ventilation openings.

8. The integrated circulating liquid-cooled dry vacuum unit according to claim 7, characterized in that: The windproof component includes a baffle plate, several electric telescopic rods, and a buffer component; the baffle plate is slidably connected to the inside of the refrigeration box, and several electric telescopic rods are installed on the top of the inner cavity of the refrigeration box. The telescopic ends of the electric telescopic rods are connected to the baffle plate and are used to push the baffle plate to move. Several strip-shaped openings that cooperate with the ventilation openings are provided on the baffle plate, and a buffer component is provided at the bottom of the inner cavity of the refrigeration box.

9. The integrated circulating liquid-cooled dry vacuum unit according to claim 8, characterized in that: The buffer component includes several spring bars and a limiting plate. The several spring bars are equidistantly arranged at the bottom of the inner cavity of the refrigeration box, and the limiting plate is connected to the top of the spring bars.

10. A method of using an integrated circulating liquid-cooled dry vacuum unit, applicable to the integrated circulating liquid-cooled dry vacuum unit as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Start the equipment. The coolant from the storage tank is delivered to the vacuum unit outside the tank through the pipeline system to exchange heat and cool the operating vacuum unit. S2. The coolant, after absorbing heat, is transported from the vacuum unit to the refrigeration unit inside the chamber through the pipeline system. S3. Operate the refrigeration mechanism to cool the coolant after heat exchange; S4. The cooled coolant, after cooling is completed, is transported back to the coolant reservoir of the cooling system for storage through the flow guiding mechanism and pipeline system.

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