Welded volute and multistage turbine vacuum machine

Abstract

The application discloses a welded volute and multistage turbine vacuum machine and relates to the technical field of vacuum machines.The welded volute and multistage turbine vacuum machine comprises an upper half machine shell and an air outlet, the lower end of the upper half machine shell is provided with a lower half machine shell, a rotor set is arranged between the upper half machine shell and the lower half machine shell, one end of the rotor set is provided with a balance disc, the outer side of the balance disc is provided with a sealing gasket, and the side of the lower half machine shell is provided with a supporting bearing box.The welded volute and multistage turbine vacuum machine can drive the whole vacuum machine to adjust the height, is suitable for different height working environments, and four air rods are independently controlled, the air rod is electrically connected with the receiver, and thus when the displacement sensor detects displacement changes, the air rod can be used to automatically compensate for the displacement difference, the vacuum machine can be kept stable during long-time operation, the vacuum machine set levelness is ensured, and the device operation is more reliable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum machines, in particular to a welded volute and a multi-stage turbine vacuum machine. BACKGROUND

[0002] It mainly relates to the papermaking industry, in particular to a multi-stage turbine vacuum machine matched with a welded volute. The vacuum system is a very important part of a paper machine. At present, a multi-stage turbine vacuum machine is usually used in a vacuum system of a medium or large paper machine. The multi-stage turbine vacuum machine generates vacuum degree by sucking gas, and the sucked gas carries away water in paper pulp, thereby improving the dryness of paper for dewatering.

[0003] At present, the stability of the multi-stage turbine vacuum machine when placed is difficult to control after multiple uses, which causes a slight deviation of the multi-stage turbine vacuum machine, and the user is difficult to find out in time, so that the levelness of the whole unit is deviated, thereby affecting the working stability of the multi-stage turbine vacuum machine.

[0004] Therefore, in view of the above, the existing structure and defects are improved, and the welded volute and the multi-stage turbine vacuum machine are provided. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a welded volute and a multi-stage turbine vacuum machine, which solves the problems in the background art.

[0006] To achieve the above purpose, the following technical scheme is adopted: a welded volute and a multi-stage turbine vacuum machine, comprising an upper half machine shell and an air outlet, a lower half machine shell is arranged at the lower end of the upper half machine shell, a rotor set is installed between the upper half machine shell and the lower half machine shell, and a balance disc is installed at one end of the rotor set, a sealing gasket is arranged on one side of the outer portion of the balance disc, a support bearing box is arranged on one side of the lower half machine shell, and a thrust bearing box is installed on the side of the outer portion of the lower half machine shell away from the support bearing box, the air outlet is arranged above the upper half machine shell, platform seats are arranged at the four corners of the bottom of the upper half machine shell, a stabilizing assembly for keeping the vacuum machine stable is installed in the inner portion of the platform seat, and the stabilizing assembly comprises an air rod, a mounting plate, a mounting column, a displacement sensor and a receiver, the output end of the air rod is provided with the mounting plate, one side of the bottom of the mounting plate is provided with the mounting column, the bottom of the mounting column is provided with the displacement sensor, and one side of the bottom of the air rod is provided with the receiver.

[0007] Further, the stabilizing assembly is provided with four groups, and the receiver is installed below the displacement sensor.

[0008] Further, the inner portion of one side of the thrust bearing box and the support bearing box is provided with an auxiliary assembly for assisting the rotor set in cooling and lubrication, and the auxiliary assembly is provided with two groups.

[0009] Further, the auxiliary assembly comprises an auxiliary cylinder, an oil pipe and an outer cover, and the auxiliary cylinder is arranged at both ends of the rotor group, the inside of the auxiliary cylinder is provided with the oil pipe on both upper and lower sides, and the outer surface of the auxiliary cylinder is provided with the outer cover.

[0010] Further, the outside of a group of the oil pipes is provided with a cooling assembly for assisting in cooling, and the cooling assembly comprises an outer pipe, a fin, a water pipe and an oil pump, the outer surface of the outer pipe is annularly provided with the fin, one end of the outer pipe is provided with the water pipe, one end of the water pipe is connected with a water pump, the end of the oil pipe is provided with the oil pump, the outside of the water pipe is provided with a thermistor, one end of the thermistor is provided with a power supply group through a wire, one end of the power supply group is connected with an electromagnet through a wire, one side of the electromagnet is provided with a metal plate, the outer surface of one side of the metal plate is provided with a connecting spring, and the end of the connecting spring is provided with a connecting top frame.

[0011] Further, the oil pump is provided with a transfer box through a pipeline, and the transfer box has a hollow structure.

[0012] Further, the inside of the transfer box is provided with an excess pipe, and one end of the excess pipe is provided with a connecting pipe through a pipeline.

[0013] Further, one end of the connecting pipe is connected with the oil pipe on the upper side of the inside of the auxiliary cylinder, and the two groups of the oil pipes are parallel to each other.

[0014] Further, the top of the air outlet is provided with an extension cover, and the inside of the extension cover is provided with an auxiliary assembly for detecting the air outlet state, and the auxiliary assembly comprises an auxiliary plate and a guide shaft, and the two ends of the auxiliary plate are provided with the guide shaft.

[0015] Further, the auxiliary assembly further comprises a connecting disc, a connecting shaft and an extension plate, and the guide shaft is rotatably connected with the extension cover, the end of the guide shaft is provided with the connecting shaft, the outside of the connecting shaft is provided with the connecting disc, and the outer surface of the connecting shaft is provided with the extension plate.

[0016] The application provides a welding volute and multi-stage turbine vacuum machine, which has the following advantages:

[0017] 1. The welding volute and multi-stage turbine vacuum machine, the multi-stage turbine vacuum machine adopts a welding shell, the size and relative position of each air inlet can be calculated according to the gas volume, so that the gas flow rate is within a reasonable range, and the position of the air inlet can be adjusted appropriately to facilitate the connection with the inlet pipeline.

[0018] 2. The welded volute and multi-stage turbine vacuum machine can drive the entire vacuum machine to adjust the height through the design of the air rod, which is beneficial to the vacuum machine suitable for different height working environments, and the four air rods are independently controlled, the air rod is electrically connected with the receiver, so that when the displacement sensor detects that the displacement changes, the displacement difference can be automatically compensated by the design of the air rod, ensuring the stability of the vacuum machine during long-time operation, ensuring the levelness of the vacuum unit and making the device run more reliably.

[0019] 3. The welded volute and multi-stage turbine vacuum machine, through the design of the cooling assembly, the lubricating oil can be immersed into the rotating area of the rotor group and the bearing, which can be lubricated when the above two rotate, reducing the friction resistance generated by rotation. In addition, through the design of the oil pump and the oil pipe, the lubricating oil flowing out of the bottom of the auxiliary cylinder can be extracted again into the over-pipe. When the lubricating oil flows, cooling water can be injected into the outer pipe by the design of the water pipe and the water pump, which is convenient for cooling the lubricating oil after heat absorption. The design of the oil pump can be used to suck the lubricating oil between the rotor group and the bearing, which can lubricate the rotor group and the bearing, and can also cool the sealing gasket between the rotor group and the bearing, avoiding the sealing gasket being in high temperature state for a long time;

[0020] 4. The welded volute and multi-stage turbine vacuum machine, when the oil pipe circulates in the rotating area of the rotor group and the bearing, the water pipe outside the oil pipe is used to absorb heat and cool down, which is beneficial to the re-emulsification of the lubricating oil in the oil pipe and the cooling between the rotor group and the bearing. At the same time, the design of the thermistor subjected to the temperature rise of the water pipe makes the resistance value of the thermistor decrease, so that the current increases and the magnetism of the electromagnet increases. When the magnetism of the electromagnet increases, the design of the connecting spring can be used to magnetically attract the metal plate, and the water pump is electrically connected with the top frame, so that the water pump obtains the power source through the above operation, which is convenient for replacing the water in the water pipe according to the temperature control of the lubricating oil, so that the water pipe can maintain good cooling effect on the oil pipe, and also avoid the continuous work of the water pump. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a main cross-sectional structure diagram of the welded volute and multi-stage turbine vacuum machine of the present application;

[0022] Figure 2 It is a support bearing box and auxiliary assembly distribution structure diagram of the welded volute and multi-stage turbine vacuum machine of the present application;

[0023] Figure 3 It is an auxiliary assembly structure diagram of the welded volute and multi-stage turbine vacuum machine of the present application;

[0024] Figure 4 It is an auxiliary assembly and cooling assembly connection structure diagram of the welded volute and multi-stage turbine vacuum machine of the present application;

[0025] Figure 5 The internal structure of the transfer box of the welded volute and multi-stage turbine vacuum machine of the present application is shown in the schematic diagram.

[0026] Figure 6 The stable assembly structure of the welded volute and multi-stage turbine vacuum machine of the present application is shown in the schematic diagram.

[0027] Figure 7 The welded volute and multi-stage turbine vacuum machine of the present application is shown in the schematic diagram. Figure 4 The enlarged structure of position A is shown in the schematic diagram.

[0028] In the figure: 1, upper half of the machine shell; 2, lower half of the machine shell; 3, rotor group; 4, thrust bearing box; 5, support bearing box; 6, air outlet; 7, extension cover; 8, balance disc; 9, sealing gasket; 10, auxiliary assembly; 1001, auxiliary cylinder; 1002, oil pipe; 1003, outer cover; 11, platform seat; 12, fixing bolt; 13, auxiliary assembly; 1301, auxiliary plate; 1302, guide shaft; 1303, connecting disc; 1304, connecting shaft; 1305, extension plate; 14, cooling assembly; 1401, outer pipe; 1402, fin; 1403, water pipe; 1404, oil pump; 15, connecting pipe; 16, top plate; 17, excess pipe; 18, transfer box; 19, stable assembly; 1901, air rod; 1902, mounting plate; 1903, mounting column; 1904, displacement sensor; 1905, receiver; 20, thermistor; 21, power supply group; 22, electromagnet; 23, metal plate; 24, connecting top frame; 25, connecting spring. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0030] As Figures 1-6As shown, the present application provides technical solutions: welding volute and multistage turbine vacuum machine, including upper half of the shell 1, lower half of the shell 2, rotor group 3, thrust bearing box 4, support bearing box 5, air outlet 6, extension cover 7, balance disc 8, gasket 9, auxiliary assembly 10, auxiliary cylinder 1001, oil pipe 1002, cover 1003, platform seat 11, fixing bolt 12, auxiliary assembly 13, auxiliary plate 1301, guide shaft 1302, connecting disc 1303, connecting shaft 1304, extension plate 1305, cooling assembly 14, outer tube 1401, fin 1402, water pipe 1403, oil pump 1404, connecting pipe 15, top plate 16, excessive pipe 17, transfer box 18, stabilizing assembly 19, air rod 1901, mounting plate 1902, mounting column 1903, displacement sensor 1904, receiver 1905, thermistor 20, power group 21, electromagnet 22, metal plate 23, connecting top frame 24 and connecting spring 25, the lower end of the upper half of the shell 1 is provided with the lower half of the shell 2, the lower half of the shell 2 is provided with mounting bracket in front and back, the bracket is provided with mounting hole and positioning pin hole, the upper half of the shell 1 and the lower half of the shell 2 are positioned and installed with the thrust bearing box 4 and the support bearing box 5, the coaxiality between the rotor group 3 and the shell sealing assembly is ensured, the multistage turbine vacuum machine adopts the shell in the form of welding, the size and relative position of each inlet can be calculated according to the gas amount, the gas flow rate is ensured to be in a reasonable range, meanwhile the position of the inlet can be adjusted appropriately, the connection with the inlet pipeline is facilitated, in addition, the number of the shell is matched according to the number of impeller stages, generally three to four stages, when the number of impeller stages is three, the number of shell stages corresponds to three, meanwhile three inlets are provided, when the number of impeller stages is four, the number of shell stages corresponds to four, meanwhile four inlets are provided, the shell adopts upper, lower and middle split structure, the inlets are all arranged at the bottom of the shell, the air outlet 6 is arranged above, the connection with the inlet pipeline and the installation of equipment are facilitated, the inlets are arranged below the shell, the rectangular interface is connected with the pipeline through the reducing pipe, the number of inlets is three or four according to the vacuum demand of the paper machine, each inlet is designed independently and does not affect each other.The size of the air inlet is 0.4-1.0m in length and 0.2-0.4m in width, the area of the air inlet is 0.4m2 at most and 0.08m2 at least, the gas flow rate is 20-30m / min, the corresponding flow range is 96-720m3 / min, compared with the casting shell, the flow of the air inlet with DN600 is 339-509m3 / min, the flow of the air inlet with DN500 is 236-353m3 / min, and the flow of the air inlet with DN400 is 151-226m3 / min, the welded shell can meet the demand of larger air volume change of the paper machine, the rotor group 3 is installed between the upper half shell 1 and the lower half shell 2, one end of the rotor group 3 is provided with the balance disc 8, the balance disc 8 is provided with the sealing gasket 9 on one side, the shell is provided with a sealing groove at both ends, the shaft end sealing and the balance disc 8 sealing are installed, the gas leakage loss is reduced, the shell is provided with a compensating backflow device installation groove, the compensating backflow device can be installed and adjusted in position, the lower half shell 2 is provided with the supporting bearing box 5 on one side, the lower half shell 2 is provided with the thrust bearing box 4 on the side away from the supporting bearing box 5, the thrust bearing box 4 and the supporting bearing box 5 are provided with the auxiliary assembly 10 on one side for assisting the rotor group 3 in cooling and lubrication, the auxiliary assembly 10 is provided with two groups, the air outlet 6 is arranged above the upper half shell 1, and the platform seat 11 is arranged at the bottom of the upper half shell 1.

[0031] As shown in Figure 1 , Figure 3 and Figure 6 , the platform seat 11 is provided with the stabilizing assembly 19 for keeping the vacuum machine stable, the stabilizing assembly 19 includes the air rod 1901, the mounting plate 1902, the mounting column 1903, the displacement sensor 1904 and the receiver 1905, the stabilizing assembly 19 is provided with four groups, the receiver 1905 is arranged below the displacement sensor 1904, the mounting plate 1902 is arranged at the output end of the air rod 1901, the mounting column 1903 is arranged at one side of the bottom of the mounting plate 1902, the displacement sensor 1904 is arranged at the bottom of the mounting column 1903, and the receiver 1905 is arranged at one side of the bottom of the air rod 1901, the stabilizing assembly 19 is arranged at the middle of the shell, which can reduce the displacement caused by the thermal deformation of the shell, and the stability of the machine group is better, the design of the air rod 1901 can drive the whole vacuum machine to adjust the height, which is beneficial to the vacuum machine to be suitable for different height working environments, and the four air rods 1901 are independently controlled, the air rod 1901 is electrically connected with the receiver 1905, so that when the displacement sensor 1904 detects the displacement change, the design of the air rod 1901 can automatically compensate the displacement difference, which can ensure the stability of the vacuum machine during long-time operation, and ensure the levelness of the vacuum machine group and make the device run more reliably.

[0032] As shown in Figure 1 ,Figure 2 、 Figure 4 、 Figure 5 and Figure 7As shown, the auxiliary assembly 10 includes an auxiliary cylinder 1001, an oil pipe 1002 and an outer cover 1003, and the auxiliary cylinder 1001 is arranged at both ends of the rotor set 3, the inside of the auxiliary cylinder 1001 is provided with the oil pipe 1002 on the upper and lower sides, the outer surface of the auxiliary cylinder 1001 is provided with the outer cover 1003, the outside of a group of oil pipes 1002 is provided with a cooling assembly 14 for auxiliary cooling, and the cooling assembly 14 includes an outer pipe 1401, a fin 1402, a water pipe 1403 and an oil pump 1404, the outer surface of the outer pipe 1401 is annularly provided with the fin 1402, one end of the outer pipe 1401 is provided with the water pipe 1403, one end of the water pipe 1403 is connected with a water pump, the end of the oil pipe 1002 is provided with the oil pump 1404, the outside of the water pipe 1403 is provided with a thermistor 20, one end of the thermistor 20 is provided with a power supply assembly 21 through a wire, one end of the power supply assembly 21 is connected with an electromagnet 22 through a wire, one side of the electromagnet 22 is provided with a metal plate 23, one side of the outer surface of the metal plate 23 is provided with a connecting spring 25, and the end of the connecting spring 25 is provided with a connecting top frame 24, when the oil pipe 1002 circulates in the rotating area of the rotor set and the bearing, the water pipe 1403 outside the oil pipe 1002 is used for heat absorption and cooling, which is conducive to the re-emulsification of the lubricating oil in the oil pipe 1002 and the cooling between the rotor set and the bearing, and at the same time, the design that the thermistor 20 is subjected to the temperature rise of the water pipe 1403 can make the resistance of the thermistor 20 decrease, so that the current increases and the magnetism of the electromagnet 22 increases, and the design of the connecting spring 25 can magnetically attract the metal plate 23 when the magnetism of the electromagnet 22 increases, and the connecting top frame 24 and the water pump are electrically connected, so that the water pump obtains a power source through the above operation, and the water in the water pipe 1403 can be extracted and replaced according to the temperature control requirement of the lubricating oil, so that the water pipe 1403 can maintain good cooling effect on the oil pipe 1002, and the water pump can avoid continuous work, wherein the thermistor 20 is an NTC thermistor, the resistance value decreases with the increase of temperature, the oil pump 1404 is provided with a transfer box 18 through a pipeline, the transfer box 18 has a hollow structure, the inside of the transfer box 18 is provided with an excess pipe 17, one end of the excess pipe 17 is provided with a connecting pipe 15 through a pipeline, one end of the connecting pipe 15 is connected with the oil pipe 1002 inside the auxiliary cylinder 1001 on the upper side, the two groups of oil pipes 1002 are parallel to each other, the rotor set 3 and the bearing are in a long-term rotating state at both ends, the design of the oil pump 1404 and the oil pipe 1002 can guide the lubricating oil stored in the excess pipe 17 in the transfer box 18 to the inside of the auxiliary cylinder 1001, and the auxiliary cylinder 1001 is sealingly arranged at both ends of the rotor set 3, so that the lubricating oil can be immersed in the rotating area of the rotor set 3 and the bearing, and can be lubricated when the above two rotate, thereby reducing the friction resistance generated by rotation, and the design of the oil pump 1404 and the oil pipe 1002 can extract the lubricating oil flowing out of the bottom of the auxiliary cylinder 1001 again into the excess pipe 17,The lubricating oil liquid flow can inject cooling water into the outer pipe 1401 by using the design of the water pipe 1403 and the water pump, which is convenient for cooling the lubricating oil liquid after heat absorption, and convenient for the design of the oil pump 1404 to suck the lubricating oil liquid to the rotor group 3 and the bearing, which can lubricate the rotor group 3 and the bearing, and can also cool the sealing gasket between the rotor group 3 and the bearing, avoid the sealing gasket in high temperature state for a long time, cause the sealing effect between the rotor group 3 and the bearing to be poor, the top of the air outlet 6 is provided with an extension cover 7, and the inside of the extension cover 7 is installed with an auxiliary assembly 13 for detecting the air outlet state, the auxiliary assembly 13 includes an auxiliary plate 1301 and a guide shaft 1302, and the both ends of the auxiliary plate 1301 are installed with the guide shaft 1302, the auxiliary assembly 13 further includes a connecting disc 1303, a connecting shaft 1304 and an extension plate 1305, and the guide shaft 1302 is rotatably connected with the extension cover 7, the end of the guide shaft 1302 is installed with the connecting shaft 1304, and the outside of the connecting shaft 1304 is provided with the connecting disc 1303, the outer surface of the connecting shaft 1304 is installed with the extension plate 1305, when the air outlet 6 blows air, the force will directly act on the auxiliary plate 1301, so that the auxiliary plate 1301 can rotate by using the design of the guide shaft 1302, and the guide shaft 1302 is connected with the connecting shaft 1304, so that the connecting shaft 1304 will follow the movement, the extension plate 1305 connected with the connecting shaft 1304 can rotate synchronously, which is convenient for directly observing the air outlet condition of the air outlet 6 from the outside, and also can adjust the rotation angle of the auxiliary plate 1301 according to the required air outlet direction, and the extension plate 1305 and the connecting disc 1303 are fixed by the design of the screw, which is convenient for guiding the direction of the air outlet 6.

[0033] In summary, as Figures 1-7As shown, the welded volute and multi-stage turbine vacuum machine, when in use, the multi-stage turbine vacuum machine adopts a welded shell, the size and relative position of each stage inlet can be calculated according to the gas volume, to ensure that the gas flow rate is within a reasonable range, and the position of the inlet can be adjusted appropriately to facilitate connection with the inlet pipeline. In addition, the number of stages of the shell is matched with the number of impeller stages, which is generally three to four stages. When the number of impeller stages is three, the number of shell stages corresponds to three, and three inlets are provided. When the number of impeller stages is four, the number of shell stages corresponds to four, and four inlets are provided. The shell adopts an upper and lower middle split structure, the inlets are provided at the bottom of the shell, and the outlets 6 are provided at the top, which facilitates connection with the inlet pipeline and installation of the equipment. The inlets are provided below the shell and connected to the pipeline through a rectangular interface and a reducer. The number of inlets is three or four according to the vacuum demand of the paper machine. Each inlet is designed independently and does not affect each other. The length of the inlet size is in the range of 0.4-1.0m, the width is in the range of 0.2-0.4m, the area of the inlet is 0.4m2 at most and 0.08m2 at least, the gas flow rate is calculated at 20-30m / min, and the corresponding flow rate is in the range of 96-720m3 / min. Compared with the cast shell, the DN600 inlet size flow rate is in the range of 339-509m3 / min; the DN500 inlet size flow rate is in the range of 236-353m3 / min; and the DN400 inlet size flow rate is in the range of 151-226m3 / min. The welded shell can meet the larger gas volume change demand of the paper machine, and the shell is provided with a sealing element groove at both ends to install shaft end seals and balance disc 8 seals, thereby reducing gas leakage loss. The shell is provided with a retractor installation groove between stages, which can install and adjust the position of the retractor. The rotor set 3 and the bearing are in a long-term rotating state at both ends, and the oil pump 1404 and the oil pipe 1002 are designed to facilitate the introduction of the lubricating oil stored in the transfer tank 18 and the excess pipe 17 into the auxiliary cylinder 1001. The auxiliary cylinder 1001 is sealed at both ends of the rotor set 3, so that the lubricating oil can be immersed in the rotating area of the rotor set 3 and the bearing, thereby lubricating the above-mentioned two rotating parts and reducing friction resistance. In addition, the oil pump 1404 and the oil pipe 1002 can extract the lubricating oil flowing out of the bottom of the auxiliary cylinder 1001 again into the excess pipe 17. When the lubricating oil flows, the water pipe 1403 and the water pump can be used to inject cooling water into the outer pipe 1401, thereby facilitating the cooling treatment of the lubricating oil after heat absorption, and facilitating the use of the oil pump 1404 to suck the lubricating oil between the rotor set 3 and the bearing again. The oil pump 1404 can also be used to cool the sealing gasket between the rotor set 3 and the bearing, thereby avoiding the sealing gasket being in a high temperature state for a long time, which can cause poor sealing effect between the rotor set 3 and the bearing. When the oil pipe 1002 flows through the rotating area of the rotor set and the bearing, the water pipe 1403 outside the oil pipe 1002 can be used for heat absorption and cooling.The lubricating oil in the oil pipe 1002 is re-emulsified and the temperature between the rotor set and the bearing is reduced, and the design that the thermistor 20 is affected by the temperature rise of the water pipe 1403 makes the resistance of the thermistor 20 decrease, so that the current increases, the magnetism of the electromagnet 22 increases, and when the magnetism of the electromagnet 22 increases, the metal plate 23 is magnetically adsorbed by the design of the connecting spring 25, the top frame 24 is electrically connected with the water pump, so that the water pump obtains a power source through the above operation, and the water in the water pipe 1403 can be extracted and replaced according to the temperature control of the lubricating oil, so that the water pipe 1403 can keep good cooling effect on the oil pipe 1002, and the water pump is prevented from working continuously, wherein the thermistor 20 is an NTC thermistor, and the resistance decreases with the temperature rise, in addition, when the air outlet 6 blows air, the force acts directly on the auxiliary plate 1301, so that the auxiliary plate 1301 can rotate by the design of the guide shaft 1302, and the guide shaft 1302 is connected with the connecting shaft 1304, so that the connecting shaft 1304 is driven to rotate, the extension plate 1305 connected with the connecting shaft 1304 can rotate synchronously, the air blowing condition of the air outlet 6 can be directly observed from the outside, and the rotation angle of the auxiliary plate 1301 can be adjusted according to the required air blowing direction, the extension plate 1305 is fixed with the connecting disc 1303 through the design of the screw, so that the direction of the air outlet 6 can be guided, and the height of the vacuum machine can be adjusted through the design of the air rod 1901, so that the vacuum machine is suitable for different working environments, the four air rods 1901 are independently controlled, the air rod 1901 is electrically connected with the receiver 1905, so that when the displacement sensor 1904 detects displacement change, the displacement difference can be automatically compensated by the design of the air rod 1901, the stability of the vacuum machine during long-time operation is ensured, and the device is more reliable.

[0034] The embodiments of the present application are given for illustration and description only, and are not exhaustive or limiting of the present application. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A welded volute and multi-stage turbo vacuum machine comprising an upper half casing (1) and an air outlet (6), characterized in that: The lower end of the upper half shell (1) is provided with the lower half shell (2), the rotor group (3) is installed between the upper half shell (1) and the lower half shell (2), one end of the rotor group (3) is provided with the balance disc (8), the outer side of the balance disc (8) is provided with the sealing gasket (9), one side of the lower half shell (2) is provided with the support bearing box (5), and the side of the lower half shell (2) away from the support bearing box (5) is provided with the thrust bearing box (4), the air outlet (6) is arranged above the upper half shell (1), and the platform seat (11) is arranged at the four corners of the bottom of the upper half shell (1), the inside of the platform seat (11) is provided with the stabilizing assembly (19) for keeping the vacuum machine stable, and the stabilizing assembly (19) comprises the air rod (1901), the mounting plate (1902), the mounting column (1903), the displacement sensor (1904) and the receiver (1905), the output end of the air rod (1901) is provided with the mounting plate (1902), one side of the bottom of the mounting plate (1902) is provided with the mounting column (1903), the bottom of the mounting column (1903) is provided with the displacement sensor (1904), and one side of the bottom of the air rod (1901) is provided with the receiver (1905).

2. The welded volute and multistage turbomolecular vacuum machine according to claim 1, characterized in that: The stabilizing assembly (19) is provided with four groups, and the receiver (1905) is arranged below the displacement sensor (1904).

3. The welded volute and multistage turbomolecular vacuum machine according to claim 1, characterized in that: The inside of the thrust bearing box (4) and the support bearing box (5) is provided with the auxiliary assembly (10) for assisting the rotor group (3) in cooling and lubrication, and the auxiliary assembly (10) is provided with two groups.

4. The welded volute and multistage turbomolecular vacuum machine according to claim 3, characterized in that: The auxiliary assembly (10) comprises the auxiliary cylinder (1001), the oil pipe (1002) and the outer cover (1003), and the auxiliary cylinder (1001) is arranged at the two ends of the rotor group (3), the inside of the auxiliary cylinder (1001) is provided with the oil pipe (1002) arranged on the upper side and the lower side, and the outer surface of the auxiliary cylinder (1001) is provided with the outer cover (1003).

5. The welded volute and multistage turbomolecular vacuum machine according to claim 4, characterized in that: The outside of one group of the oil pipe (1002) is provided with the cooling assembly (14) for assisting in cooling, and the cooling assembly (14) comprises the outer pipe (1401), the fin (1402), the water pipe (1403) and the oil pump (1404), the outer surface of the outer pipe (1401) is annularly provided with the fin (1402), one end of the outer pipe (1401) is provided with the water pipe (1403), one end of the water pipe (1403) is connected with the water pump, and the end of the oil pipe (1002) is provided with the oil pump (1404), the outside of the water pipe (1403) is provided with the thermistor (20), one end of the thermistor (20) is connected with the power supply group (21) through a wire, one end of the power supply group (21) is connected with the electromagnet (22) through a wire, one side of the electromagnet (22) is provided with the metal plate (23), one side of the metal plate (23) is provided with the connecting spring (25), and the end of the connecting spring (25) is provided with the connecting top frame (24).

6. The welded volute and multistage turbomolecular vacuum machine according to claim 5, characterized in that: The oil pump (1404) is provided with a transfer box (18) through pipeline installation, and the transfer box (18) is in a hollow structure.

7. The welded volute and multistage turbomolecular vacuum machine according to claim 6, characterized in that: The inside of the transfer box (18) is provided with an excess pipe (17), and one end of the excess pipe (17) is provided with a connecting pipe (15) through pipeline installation.

8. The welded volute and multistage turbomolecular vacuum machine according to claim 7, characterized in that: One end of the connecting pipe (15) is connected with the oil pipe (1002) inside the upper side of the auxiliary cylinder (1001), and the two groups of oil pipes (1002) are parallel to each other.

9. The welded volute and multistage turbomolecular vacuum machine of claim 1, wherein: The top of the air outlet (6) is provided with an extension cover (7), and the inside of the extension cover (7) is provided with an auxiliary assembly (13) for detecting the air outlet state, the auxiliary assembly (13) comprises an auxiliary plate (1301) and a guide shaft (1302), and the two ends of the auxiliary plate (1301) are provided with the guide shaft (1302).

10. The welded volute and multistage turbomolecular vacuum machine according to claim 9, characterized in that: The auxiliary assembly (13) further comprises a connecting disc (1303), a connecting shaft (1304) and an extension plate (1305), the guide shaft (1302) is rotatably connected with the extension cover (7), the end of the guide shaft (1302) is provided with the connecting shaft (1304), the outside of the connecting shaft (1304) is provided with the connecting disc (1303), and the outer surface of the connecting shaft (1304) is provided with the extension plate (1305).

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