Double-air-duct ventilation device for magnetic suspension fan

Abstract

The double-air-duct ventilation device for the magnetic suspension draught fan is installed at an air inlet of the magnetic suspension draught fan and comprises a double-air-duct ventilation cabinet body, a filter screen is installed at the air inlet of the double-air-duct ventilation cabinet body, and a partition plate is installed in the double-air-duct ventilation cabinet body. A first air duct and a second air duct are arranged on the two sides of the partition plate correspondingly; the air duct valve plate switching mechanism is installed at an air outlet of the double-air-duct ventilation cabinet body, the air duct valve plate switching mechanism comprises a switching box body, a valve shaft and an adjusting unit, the switching box body is arranged at the air outlet of the double-air-duct ventilation cabinet body, the valve shaft is installed in the box body, and the adjusting unit is installed on the valve shaft. The top of the valve shaft penetrates through the box body and is provided with a switching unit, two valve plates are hinged to the valve shaft, and an adjusting unit is arranged between the two valve plates. A double-air-duct mechanism is adopted, the shutdown trouble of a fan during maintenance of a filtering system is solved, and the operation efficiency and maintenance convenience are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ventilation duct valve switching, and in particular to a dual-duct ventilation device for a magnetic suspension fan. Background Art

[0002] With the continuous advancement of industrial technology, magnetic levitation blowers have demonstrated their extensive application value in sewage treatment, cement manufacturing, chemical industry and other fields. Their significant advantages, such as high efficiency, energy saving, low noise, and oil-free lubrication, have brought significant economic benefits to industrial production.

[0003] In the operation of a magnetic levitation blower, ventilation and air intake control are crucial links. As a key component of a magnetic levitation blower, the control and maintenance of the filtration system cannot be ignored. Currently, traditional blower equipment and most magnetic levitation blowers on the market generally use an integrated cabinet sealing structure, with one or more windows machined into the cabinet to serve as the equipment's air inlet filter. As a primary industrial air supply device, magnetic levitation blowers, due to their special operating environment, require maintenance of the filtration system during actual use. However, maintenance of the filtration system of a typical blower requires that the air supply system be shut down before the operation is performed.

[0004] In industrial production, stable and uninterrupted operation of air supply equipment is crucial for ensuring production efficiency. Furthermore, the frequent downtime of magnetic levitation blowers poses inestimable risks and hidden dangers to the equipment itself. Furthermore, from the perspective of ventilation and air intake control, traditional structures have shortcomings in duct switching and gas sealing, making it difficult to meet the requirements for efficient and stable ventilation. Therefore, designing a fume hood system that can maintain the filtration system without shutting down the air supply equipment is particularly urgent. Summary of the Invention

[0005] (1) Technical problems solved

[0006] In view of the deficiencies in the prior art, the present invention provides a dual-duct ventilation device for a magnetic levitation fan.

[0007] (2) Technical solution

[0008] To solve the above problems, the present invention provides the following technical solutions: a dual-duct ventilation device for a magnetic levitation blower, the dual-duct ventilation device for a magnetic levitation blower being installed at the air inlet of the magnetic levitation blower, comprising: a dual-duct ventilation cabinet and a duct valve plate switching mechanism;

[0009] A dual-duct fume hood, wherein a partition is installed in the dual-duct fume hood, and a first air duct and a second air duct are respectively provided on both sides of the partition, so that the partition is used to separate the first air duct and the second air duct, and the first air duct and the second air duct are respectively provided with air duct outlets, and a switching box is provided at the air duct outlet, and the two air duct outlets are located in the switching box, and the dual-duct fume hood is connected to the air inlet of the magnetic levitation blower through the air outlet of the switching box;

[0010] The duct valve plate switching mechanism is installed in the switching box, and includes: a valve shaft, an adjusting unit, and a switching unit. The valve shaft is arranged at a position between the two air duct outlets, and the top of the valve shaft passes through the switching box. The switching unit is arranged above the switching box. The movable end of the switching unit is connected to the top of the valve shaft. Two valve plates are provided on the valve shaft. The adjusting unit is arranged between the two valve plates. The adjusting unit is used to control the opening and closing between the two valve plates. The switching unit is used to control the air duct valve plate switching mechanism to open and close the two air duct inlets.

[0011] Preferably, the adjustment unit includes: a supporting hinge and a telescopic rod, the two ends of the supporting hinge are hinged to the valve plate, the fixed end of the telescopic rod is vertically arranged on the valve shaft, and the telescopic end of the telescopic rod is arranged in the middle of the supporting hinge, and the telescopic rod is used to control the supporting hinge to pull the two valve plates to open and close or retract.

[0012] Preferably, the switching unit includes: a switching handle and a limit assembly, one end of the switching handle is connected to the top of the valve shaft, the sub-end of the limit assembly is arranged on the switching handle, and the female end of the limit assembly is arranged on the switching box body, the sub-end and the female end of the limit assembly are used for interlocking, and the limit assembly is used to limit the switching handle.

[0013] Preferably, the limiting assembly includes: a tower lock, a tower lock buckle, an electromagnetic lock, and an electromagnetic lock buckle. The tower lock is symmetrically arranged above the switching box along the valve axis, the tower lock buckle is arranged on the upper surface of the switching handle, and the tower lock buckle is used to interlock with the tower lock. The electromagnetic lock is arranged on the lower surface of the switching handle, and the electromagnetic lock buckle is arranged in the middle of the two tower locks. The electromagnetic lock buckle is used to interlock with the electromagnetic lock. The tower lock and the electromagnetic lock buckle are both used to fix the switching handle.

[0014] Preferably, a filter is installed at the air inlet of the dual-duct ventilation cabinet, and a support seat is provided at the bottom of the dual-duct ventilation cabinet.

[0015] Preferably, the number of the filter screens is four.

[0016] Preferably, one side of the filter is hinged to the dual-duct fume hood body, and the other side of the filter is fixed by bolts.

[0017] Preferably, the opening and closing degree between the two valve plates does not exceed 90°, and they are symmetrically arranged along the valve axis.

[0018] Preferably, both valve plates are provided with sealing gaskets.

[0019] Preferably, the sealing gasket is made of rubber.

[0020] (3) Beneficial effects

[0021] Compared with the prior art, the present invention provides a dual-duct ventilation device for a magnetic levitation fan, which has the following beneficial effects:

[0022] 1. The present invention employs a dual-duct mechanism, switching between the first and second ducts via a duct valve plate switching mechanism. In normal operation, when the second duct remains open and the first duct is closed, gas can flow smoothly into the system. When maintenance is required on the filtration system associated with the first duct, air can be switched to the second duct. Improvements to the reinforcing ribs also allow for simultaneous operation of both ducts, avoiding downtime due to maintenance and enabling continuous and stable operation of the equipment. This significantly improves overall operating efficiency and ensures the continuity of industrial production.

[0023] 2. The partition of the present invention divides the interior of the cabinet into two independent and non-interfering air ducts, with a clear and reasonable structure. Through the coordinated work of the valve shaft, adjustment unit and other components, not only can the opening and closing of the air duct be effectively controlled, with a maximum opening and closing degree of 90° and symmetrical arrangement along the valve axis, ensuring smooth air duct switching, but also the rubber sealing gasket provided on the valve plate has excellent sealing, corrosion resistance and high temperature resistance, effectively preventing gas leakage between the air ducts and improving the reliability of the air duct system. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the present invention connected to a magnetic levitation blower;

[0025] Figure 2 This is one of the structural diagrams of the present invention;

[0026] Figure 3 This is the second structural diagram of the present invention;

[0027] Figure 4 It is the front view of the present invention;

[0028] Figure 5 It is a plan view of the main view of the present invention;

[0029] Figure 6 A top view of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the tower buckle lock of the present invention;

[0031] Figure 8 This is a structural diagram of the air duct valve plate switching mechanism of the present invention;

[0032] Figure 9 This is a structural schematic diagram of the air duct valve plate switching mechanism of the present invention in an expanded state;

[0033] Figure 10 This is a structural diagram of the air duct valve plate switching mechanism in the retracted state of the present invention.

[0034] Figure 11 This is the front view of the air duct valve plate switching mechanism of the present invention.

[0035] In the figure: 1 double-duct fume hood body, 101 partition, 102 first air duct, 103 second air duct, 104 filter, 105 air duct air inlet, 106 support seat, 2 switching box body, 3 valve shaft, 4 valve plate, 401 sealing gasket, 5 adjustment unit, 501 support hinge, 502 telescopic rod, 6 switching unit, 7 tower buckle lock, 701 tower buckle lock, 8 electromagnetic lock, 801 electromagnetic lock. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] The present invention provides a new technical solution: a dual-duct ventilation device for a magnetic levitation blower, which is installed at the air inlet of the magnetic levitation blower and includes: a dual-duct ventilation cabinet 1 and a duct valve plate switching mechanism;

[0038] A dual-duct fume hood 1 is provided with a partition 101 inside the dual-duct fume hood 1. A first air duct 102 and a second air duct 103 are respectively provided on both sides of the partition 101. Therefore, the partition 101 is used to separate the first air duct 102 from the second air duct 103. The first air duct 102 and the second air duct 103 are respectively provided with air duct outlets 105. A switching box 2 is provided at the air duct outlet 105. The two air duct outlets 105 are located in the switching box 2. The dual-duct fume hood 1 is connected to the air inlet of the magnetic levitation blower through the air outlet of the switching box 2.

[0039] The air duct valve plate switching mechanism is installed in the switching box 2, and includes: a valve shaft 3, an adjusting unit 5, and a switching unit 6. The valve shaft 3 is arranged between the two air duct air outlets 105, and the top of the valve shaft 3 passes through the switching box 2. The switching unit 6 is arranged above the switching box 2. The movable end of the switching unit 6 is connected to the top of the valve shaft 3. Two valve plates 4 are provided on the valve shaft 3. The adjusting unit 5 is arranged between the two valve plates 4. The adjusting unit 5 is used to control the opening and closing between the two valve plates 4. The switching unit 6 is used to control the air duct valve plate switching mechanism to open and close the two air duct air inlets 105.

[0040] In this embodiment, the adjustment unit 5 includes: a supporting hinge 501 and a telescopic rod 502. The two ends of the supporting hinge 501 are hinged to the valve plate 4. The fixed end of the telescopic rod 502 is vertically arranged on the valve shaft 3. The telescopic end of the telescopic rod 502 is arranged in the middle of the supporting hinge 501. The telescopic rod 501 is used to control the supporting hinge 501 to pull the two valve plates 4 to open and close or retract.

[0041] In this embodiment, the switching unit 6 includes: a switching handle 601 and a limit assembly, one end of the switching handle 601 is connected to the top of the valve shaft 3, the sub-end of the limit assembly is arranged on the switching handle 601, and the female end of the limit assembly is arranged on the switching box 2, the sub-end and the female end of the limit assembly are used for interlocking, and the limit assembly is used to limit the switching handle 601.

[0042] In this embodiment, the limiting assembly includes: a tower lock 7, a tower lock buckle 701, an electromagnetic lock 8, and an electromagnetic lock buckle 801. The tower lock 7 is symmetrically arranged above the switching box 2 along the valve axis, and the tower lock buckle 701 is arranged on the upper surface of the switching handle 601. The tower lock buckle 701 is used to interlock with the tower lock 7. The electromagnetic lock 8 is arranged on the lower surface of the switching handle 601. The electromagnetic lock buckle 801 is arranged in the middle of the two tower locks 7. The electromagnetic lock buckle 801 is used to interlock with the electromagnetic lock 8. The tower lock 7 and the electromagnetic lock buckle 801 are both used to fix the switching handle 601.

[0043] In this embodiment, a filter 104 is installed at the air inlet of the dual-duct ventilation cabinet 1 , and a support base 106 is provided at the bottom of the dual-duct ventilation cabinet 1 .

[0044] In this embodiment, four filters 104 are provided.

[0045] In this embodiment, one side of the filter 104 is hinged to the dual-duct fume hood 1, and the other side of the filter 6 is fixed by bolts.

[0046] In this embodiment, the opening and closing degree between the two valve plates 4 does not exceed 90°, and the two valve plates 4 are symmetrically arranged along the valve axis 3 .

[0047] In this embodiment, both valve plates 4 are provided with sealing gaskets 401 .

[0048] In this embodiment, the sealing gasket 401 is made of rubber.

[0049] Working Principle: When in use, the dual-duct switching cabinet divides its interior into two independent, non-interfering areas via a partition 101, forming a first duct 102 and a second duct 103. Switching between the two channels is achieved by controlling the valve plate 4 via the valve shaft 3 connected to the switching unit 6. The valve plate 4 is equipped with a sealing gasket 401 made of silicone, which offers excellent sealing, corrosion resistance, and high-temperature resistance. The switching unit 6 is manually controlled. In the normal operating mode of the equipment, the second air duct 103 always remains in an open state, while the first air duct 102 is in a closed state, and the gas enters the system smoothly through the second air duct 103. When the first air duct 102 is fully closed, the second air duct 103 is fully opened. At this time, the air duct valve plate switching mechanism is fixed by the tower buckle lock 7, and the air duct valve plate switching mechanism is in an expanded state; when the first air duct 102 is fully opened, the second air duct 103 is fully closed. At this time, the air duct valve plate switching mechanism is fixed by the tower buckle lock 7 on the other side, and the air duct valve plate switching mechanism is in an expanded state; when both the first air duct 102 and the second air duct 103 are opened, the air duct valve plate switching mechanism is in a retracted state, and at this time the air duct valve plate switching mechanism is fixed by the electromagnetic lock 10. In this way, the filtration system can be maintained without stopping the machine, and at the same time, the equipment can be guaranteed to operate stably and uninterruptedly. When the air duct valve plate switching mechanism is in the retracted state, the telescopic rod 502 is retracted, pushing the supporting hinge 501 to retract to both sides. The supporting hinge 501 is hinged to the valve plate 4, so that the two valve plates 4 are in a retracted state along the valve axis; in the expanded state, the telescopic rod 502 is retracted, pulling the supporting hinge 501 inward to retract, so that the two valve plates 4 are in an expanded state along the valve axis.

[0050] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A dual-duct ventilation device for a magnetic levitation fan, wherein the dual-duct ventilation device for a magnetic levitation fan is installed at the air inlet of the magnetic levitation blower, characterized in that: include: Dual-duct fume hood (1) and duct valve plate switching mechanism; A dual-duct ventilation cabinet (1), wherein a partition (101) is installed in the dual-duct ventilation cabinet (1), and a first air duct (102) and a second air duct (103) are respectively provided on both sides of the partition (101), so that the partition (101) is used to separate the first air duct (102) and the second air duct (103), and the first air duct (102) and the second air duct (103) are respectively provided with air duct outlets (105), and a switching box (2) is provided at the air duct outlets (105), and the two air duct outlets (105) are located in the switching box (2), and the dual-duct ventilation cabinet (1) is connected to the air inlet of the magnetic suspension blower through the air outlet of the switching box (2); An air duct valve plate switching mechanism is installed in the switching box (2), comprising: a valve shaft (3), an adjusting unit (5), and a switching unit (6); the valve shaft (3) is arranged between the two air duct outlets (105), and the top of the valve shaft (3) passes through the switching box (2); the switching unit (6) is arranged above the switching box (2); the movable end of the switching unit (6) is connected to the top of the valve shaft (3); two valve plates (4) are arranged on the valve shaft (3); the adjusting unit (5) is arranged between the two valve plates (4); the adjusting unit (5) is used to control the opening and closing between the two valve plates (4); and the switching unit (6) is used to control the air duct valve plate switching mechanism to open and close the two air duct inlets (105).

2. A dual-duct ventilation device for a magnetic levitation fan according to claim 1, characterized in that: The adjustment unit (5) comprises: a supporting hinge (501) and a telescopic rod (502), wherein both ends of the supporting hinge (501) are hinged to the valve plate (4), the fixed end of the telescopic rod (502) is perpendicularly arranged on the valve shaft (3), and the telescopic end of the telescopic rod (502) is arranged in the middle of the supporting hinge (501), and the telescopic rod (501) is used to control the supporting hinge (501) to pull the two valve plates (4) to open, close or retract.

3. A dual-duct ventilation device for a magnetic levitation fan according to claim 1, characterized in that: The switching unit (6) comprises: a switching handle (601) and a limiting assembly, wherein one end of the switching handle (601) is connected to the top of the valve shaft (3), the sub-end of the limiting assembly is arranged on the switching handle (601), and the female end of the limiting assembly is arranged on the switching box (2), the sub-end and the female end of the limiting assembly are used for interlocking, and the limiting assembly is used to limit the switching handle (601).

4. A dual-duct ventilation device for a magnetic levitation fan according to claim 3, characterized in that: The limiting assembly comprises: a tower lock (7), a tower lock buckle (701), an electromagnetic lock (8), and an electromagnetic lock buckle (801); the tower lock (7) is symmetrically arranged above the switching box (2) along the valve axis; the tower lock buckle (701) is arranged on the upper surface of the switching handle (601); the tower lock buckle (701) is used to interlock with the tower lock (7); the electromagnetic lock (8) is arranged on the lower surface of the switching handle (601); the electromagnetic lock buckle (801) is arranged at a position between the two tower locks (7); the electromagnetic lock buckle (801) is used to interlock with the electromagnetic lock (8); the tower lock (7) and the electromagnetic lock buckle (801) are both used to limit the switching handle (601).

5. A dual-duct ventilation device for a magnetic levitation fan according to claim 1, characterized in that: The air inlet of the dual-duct ventilation cabinet (1) is equipped with a filter (104), and the bottom of the dual-duct ventilation cabinet (1) is provided with a support base (106).

6. A dual-duct ventilation device for a magnetic levitation fan according to claim 5, characterized in that: The number of the filter screens (104) is four.

7. A dual-duct ventilation device for a magnetic levitation fan according to claim 5 or 6, characterized in that: One side of the filter screen (104) is hinged to the dual-duct ventilation cabinet (1), and the other side of the filter screen (6) is fixed by bolts.

8. The dual-duct ventilation device for a magnetic levitation fan according to claim 1, characterized in that: The opening and closing degree between the two valve plates (4) does not exceed 90°, and the two valve plates (4) are symmetrically arranged along the valve axis (3).

9. A dual-duct ventilation device for a magnetic levitation fan according to claim 8, characterized in that: Both valve plates (4) are provided with sealing gaskets (401).

10. A dual-duct ventilation device for a magnetic levitation fan according to claim 9, characterized in that: The sealing gasket (401) is made of rubber.

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