Novel magnetic suspension turbine vacuum fan

Abstract

The utility model relates to the technical field of fans, in particular to a novel magnetic suspension turbine vacuum fan. Comprising a shell with the front end open, an inner cylinder is fixedly installed in the shell, a turbine compressor is fixedly installed in the inner cylinder, a vacuum pump is fixed to the rear end of the shell, the outlet end of the vacuum pump is communicated with the inlet end of the turbine compressor, a protection frame is detachably and fixedly connected into the front end of the inner cylinder, and a filter screen is fixed into the protection frame; a filter plate is fixed in the door frame. By arranging the door frame and the filter plate, the filter screen can be protected, and the filter screen is prevented from being damaged after being impacted.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to a novel magnetic suspension turbine vacuum fan. Background Art

[0002] The structure of the turbine vacuum blower includes a centrifugal vacuum pump and a turbine compressor. The centrifugal vacuum pump is responsible for sucking the air inside the equipment to keep the equipment in a negative pressure state. The turbine compressor is used to increase the air pressure. When working, the centrifugal vacuum pump is the first, and the high speed inside causes the air to be separated under the action of centrifugal force, generating a high negative pressure. Then, the turbine compressor compresses the sucked air to increase its pressure. The main use scenarios of turbine vacuum blowers include various types of paper mills, printing plants and other industrial applications that need to handle large amounts of air. In these occasions, they can effectively improve production efficiency and ensure product quality.

[0003] The centrifugal vacuum pump and turbine compressor drive motors of the magnetic levitation turbine vacuum blower are driven by magnetic levitation motors. The magnetic levitation bearing uses magnetic force to suspend the rotor in the air, so that there is zero contact, zero friction, and no lubrication between the rotor and the stator. It also uses an integrated vacuum potting production process to greatly increase the service life of the bearing. The magnetic levitation motor adopts magnetic levitation control technology and uses a high-precision digital controller. Through high-precision ID control and imbalance compensation algorithms, it can achieve stable high-speed suspension of the shaft. It can provide secondary power to the magnetic bearing within 4ms of an unexpected power outage to ensure the power-off operation of the magnetic bearing. Linkage control, automatic protection and inverter protection are linked.

[0004] A protective net needs to be set at the air outlet of the magnetic levitation turbine vacuum blower to prevent foreign matter from entering the turbine compressor. The protective nets at the air outlet of some existing magnetic levitation turbine vacuum blowers are fixedly set. When the humidity of the extracted air is high, dust is easily attached to the protective net, making it inconvenient to clean the protective net. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a magnetic suspension turbine vacuum fan which is convenient for cleaning a protective net.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A novel magnetic levitation turbine vacuum blower comprises a shell with an opening at the front end, an inner cylinder is fixedly installed in the shell, a turbine compressor is fixedly installed in the inner cylinder, a vacuum pump is fixed at the rear end of the shell, the outlet end of the vacuum pump is connected to the inlet end of the turbine compressor, a protective frame is detachably fixedly connected in the front end of the inner cylinder, a filter screen is fixed in the protective frame, a door frame is hingedly connected to the left side of the front end of the shell, a filter plate is fixed in the door frame, the right side of the front end of the shell is connected to the door frame through a connecting piece, a plug hole is provided at the outer edge of the protective frame, a through hole concentric with the plug hole is provided on the inner cylinder, a transverse groove corresponding to the through hole is provided on the shell, a second plug rod is elastically slidably connected in the transverse groove, the second plug rod is inserted into the plug hole after passing through the through hole, a longitudinal groove connected with the transverse groove is provided on the shell, a first plug rod is slidably arranged in the longitudinal groove, the rear end of the first plug rod and the right end of the second plug rod are both processed with guide inclined surfaces, the two guide inclined surfaces are parallel to each other and in sliding contact, the right end of the guide inclined surface at the rear end of the first plug rod is inclined toward the rear side, and the front end of the first plug rod is in contact with the door frame and is limited by the door frame.

[0008] Specifically, a base is fixed at the lower end of the shell.

[0009] Specifically, the connecting member includes a first magnet and a second magnet, the first magnet is fixed on the door frame, the second magnet is fixed on the front end of the shell, and the first magnet attracts the second magnet.

[0010] Specifically, a connecting block is fixed at the lower end of the second insertion rod, the connecting block is slidably arranged in the transverse groove, and the right end of the connecting block is connected to the right groove wall of the transverse groove through a tension spring.

[0011] Specifically, a long groove is opened on the outer edge of the protection frame, the length direction of the long groove is parallel to the axial direction of the inner tube, and a convex strip is fixed on the outer side of the protection frame, and the convex strip is slidably engaged in the long groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model can protect the filter screen by arranging the door frame and the filter plate to prevent the filter screen from being damaged after being hit.

[0014] 2. After opening the door frame, the door frame loses its blocking effect on the first plug rod. Under the elastic force of the tension spring, the second plug rod moves to the right, the first plug rod moves forward, and the second plug rod moves to the right and then withdraws from the socket. Then the protective frame and the filter can be taken out of the inner cylinder to facilitate cleaning of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the utility model.

[0016] Figure 2 This is a state diagram of the first plunger and the second plunger after the door frame is opened.

[0017] Figure 3 for Figure 2 Magnified view of area A.

[0018] The names of the parts in the attached drawings are:

[0019] 1. Base; 2. Shell; 3. Inner tube; 301. Through hole; 4. Protective frame; 401. Plug hole; 5. Filter; 6. Door frame; 7. Raised strip; 8. First magnet; 9. Second magnet; 10. First plug rod; 100. Horizontal groove; 11. Second plug rod; 110. Vertical groove; 12. Connecting block; 13. Tension spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 3 As shown, a novel magnetically suspended turbine vacuum blower comprises a shell 2 with an opening at the front end, and a base 1 is fixed at the lower end of the shell 2.

[0022] An inner cylinder 3 is fixedly installed in the shell 2, a turbine compressor is fixedly installed in the inner cylinder 3, a vacuum pump is fixed at the rear end of the shell 2, and the outlet end of the vacuum pump is connected to the inlet end of the turbine compressor.

[0023] A protective frame 4 is detachably fixedly connected to the front end of the inner tube 3, and a long groove is provided on the outer edge of the protective frame 4. The length direction of the long groove is parallel to the axial direction of the inner tube 3. A convex strip 7 is fixed to the outer side of the protective frame 4, and the convex strip 7 is slidably engaged in the long groove. A filter screen 5 is fixed inside the protective frame 4.

[0024] The left side of the front end of the housing 2 is hinged with a door frame 6, and a filter plate is fixed in the door frame 6. By arranging the door frame 6 and the filter plate, the filter screen 5 can be protected to prevent the filter screen 5 from being damaged after being hit.

[0025] The right side of the front end of the housing 2 is connected to the door frame 6 through a connecting piece. The connecting piece includes a first magnet 8 and a second magnet 9. The first magnet 8 is fixed on the door frame 6, and the second magnet 9 is fixed on the front end of the housing 2, and the first magnet 8 attracts the second magnet 9.

[0026] The outer edge of the protection frame 4 is provided with an insertion hole 401 , the inner tube 3 is provided with a through hole 301 concentric with the insertion hole 401 , the shell 2 is provided with a transverse groove 100 corresponding to the through hole 301 , and a second insertion rod 11 is elastically slidably connected in the transverse groove 100 .

[0027] A connecting block 12 is fixed to the lower end of the second insert rod 11 . The connecting block 12 is slidably disposed in the transverse groove 100 . The right end of the connecting block 12 is connected to the right groove wall of the transverse groove 100 via a tension spring 13 .

[0028] The second plug rod 11 passes through the through hole 301 and is inserted into the socket 401. A longitudinal groove 110 connected to the transverse groove 100 is opened on the shell 2. The first plug rod 10 is slidably arranged in the longitudinal groove 110. The rear end of the first plug rod 10 and the right end of the second plug rod 11 are both processed with guiding bevels. The two guiding bevels are parallel to each other and in sliding contact. The right end of the guiding bevel at the rear end of the first plug rod 10 is inclined toward the rear side, and the front end of the first plug rod 10 is in contact with the door frame 6 and is limited by the door frame 6.

[0029] After the door frame 6 is opened, the door frame 6 loses its blocking effect on the first plug rod 10, and the second plug rod 11 moves to the right under the elastic force of the tension spring 13. Since the rear end of the first plug rod 10 and the right end of the second plug rod 11 are both processed with guiding inclined surfaces, the two guiding inclined surfaces are parallel and in sliding contact, and the right end of the guiding inclined surface at the rear end of the first plug rod 10 is inclined toward the rear side. Therefore, during the movement of the second plug rod 11 to the right, the first plug rod 10 moves toward the front side under the guidance of the guiding inclined surfaces at the rear end of the first plug rod 10 and the right end of the second plug rod 11.

[0030] After the second insertion rod 11 moves to the right, it withdraws from the insertion hole 401 , and then the protection frame 4 and the filter screen 5 can be taken out from the inner tube 3 , so that the filter screen 5 can be cleaned conveniently.

[0031] When installing the protective frame 4, make the convex strip 7 correspond to the long groove on the inner tube 3, and then install the protective frame 4 into the inner tube 3. The cooperation between the convex strip 7 and the long groove can limit the protective frame 4 in the inner tube 3. After the protective frame 4 is limited in the inner tube 3, the socket 401 is concentric with the through hole 301. In the process of closing the door frame 6, the door frame 6 can squeeze the first plug rod 10 to move backward. In the process of the first plug rod 10 moving backward, the second plug rod 11 moves to the left, and after the second plug rod 11 moves to the left, the tension spring 13 is stretched. When the first magnet 8 and the second magnet 9 are adsorbed, the door frame 6 is stabilized. At this time, the second plug rod 11 passes through the through hole 301 and is inserted into the socket 401. The protective frame 4 is connected to the inner tube 3.

[0032] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships 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.

[0033] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0034] A person skilled in the art will appreciate that all or part of the steps in the above-mentioned embodiment method can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel magnetically suspended turbine vacuum blower, comprising a casing (2) with an opening at the front end, an inner cylinder (3) fixedly mounted in the casing (2), a turbine compressor fixedly mounted in the inner cylinder (3), a vacuum pump fixedly mounted at the rear end of the casing (2), an outlet end of the vacuum pump being connected to an inlet end of the turbine compressor, characterized in that: A protective frame (4) is detachably fixedly connected to the front end of the inner cylinder (3), a filter screen (5) is fixed in the protective frame (4), a door frame (6) is hingedly connected to the left side of the front end of the shell (2), a filter plate is fixed in the door frame (6), the front right side of the shell (2) is connected to the door frame (6) through a connecting piece, a plug hole (401) is provided on the outer edge of the protective frame (4), a through hole (301) concentric with the plug hole (401) is provided on the inner cylinder (3), a transverse groove (100) corresponding to the through hole (301) is provided on the shell (2), and a second filter plate (5) is elastically slidably connected in the transverse groove (100). The plug rod (11) is inserted into the plug hole (401) after passing through the through hole (301). The housing (2) is provided with a longitudinal groove (110) which is connected to the transverse groove (100). The first plug rod (10) is slidably arranged in the longitudinal groove (110). The rear end of the first plug rod (10) and the right end of the second plug rod (11) are both processed with guiding inclined surfaces. The two guiding inclined surfaces are parallel to each other and in sliding contact. The right end of the guiding inclined surface at the rear end of the first plug rod (10) is inclined toward the rear side. The front end of the first plug rod (10) is in contact with the door frame (6) and is limited by the door frame (6).

2. According to claim 1, a novel magnetically suspended turbine vacuum blower is characterized in that: A base (1) is fixed to the lower end of the shell (2).

3. According to claim 1, a novel magnetically suspended turbine vacuum blower is characterized in that: The connecting member comprises a first magnet (8) and a second magnet (9), wherein the first magnet (8) is fixed on the door frame (6), the second magnet (9) is fixed on the front end of the shell (2), and the first magnet (8) attracts the second magnet (9).

4. According to claim 1, a novel magnetically suspended turbine vacuum blower is characterized in that: A connecting block (12) is fixed to the lower end of the second insertion rod (11), and the connecting block (12) is slidably arranged in the transverse groove (100), and the right end of the connecting block (12) is connected to the right groove wall of the transverse groove (100) via a tension spring (13).

5. According to claim 1, a novel magnetically suspended turbine vacuum blower is characterized in that: The outer edge of the protection frame (4) is provided with a long groove, the length direction of the long groove is parallel to the axial direction of the inner tube (3), and a convex strip (7) is fixed on the outer side of the protection frame (4), and the convex strip (7) is slidably engaged in the long groove.

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