Water inflow prevention device of negative pressure fan

Abstract

The utility model discloses a water inflow prevention device of a negative pressure fan. The water inflow prevention device of the negative pressure fan comprises a negative pressure fan body and a protection assembly, the negative pressure fan body comprises a negative pressure box, the negative pressure box is designed to be of a through cavity structure, a baffle is fixedly arranged on the end side of an inner cavity of the negative pressure box, a limiting frame is fixedly arranged at one end of the baffle in parallel, and a carrying frame is arranged at the center end of the limiting frame; a driving motor is fixedly assembled in the carrying frame, rotating blades are arranged at the output end of the driving motor, connecting pieces are further symmetrically arranged on the outer end side of the negative pressure box, the connecting base is installed on the negative pressure box, a notch is formed in one end of the connecting base, the protection assembly comprises a protection frame, and inserting columns are symmetrically arranged at one end of the protection frame. According to the negative pressure fan, rainwater can be prevented from being splashed into the negative pressure fan through the arranged protection assembly, the rainwater is effectively prevented from entering the fan through the protection assembly, water is prevented from corroding a motor and key parts of blades, and normal operation of the fan is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for negative pressure fans, in particular to a water ingress prevention device for negative pressure fans. Background Art

[0002] Negative pressure fan is a kind of high-efficiency ventilation equipment, which is widely used in various occasions for air circulation and temperature control. Negative pressure fan discharges indoor air to make the indoor pressure lower than the outdoor pressure, thereby introducing fresh air.

[0003] In the existing negative pressure fan, the negative pressure fan starts to run through the drive of the motor, and the rotation of the blades generates airflow, so that a negative pressure state is formed indoors. The negative pressure formed inside the workshop promotes the hot air to concentrate to the exhaust port in preparation for discharge. Due to the action of the fan, the indoor air pressure is lower than the outdoor air pressure, forming a negative pressure area, which prompts external air to flow into the room.

[0004] However, the existing negative pressure fans still have some defects. Since negative pressure fans are often installed at windows, when it rains, rain will splash into the negative pressure fans when they are working. The intrusion of rain may cause the blades and other mechanical parts of the fan to rust, thereby reducing the operating efficiency and ventilation effect of the fan.

[0005] Therefore, it is necessary to provide a negative pressure fan anti-water ingress device to solve the above technical problems. Utility Model Content

[0006] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a negative pressure fan anti-water ingress device which can be used in conjunction with multiple parts in a protective component to prevent rainwater from splashing into the negative pressure fan. The protective component can effectively block rainwater from entering the inside of the fan, thereby avoiding corrosion of key components of the motor and blades by moisture, and ensuring the normal operation of the fan.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] The negative pressure fan water ingress prevention device comprises: a negative pressure fan body and a protective component, the negative pressure fan body comprises a negative pressure box, the negative pressure box is designed as a through-cavity structure, a baffle is fixedly arranged on the inner end side of the negative pressure box inner cavity, a limit frame is fixedly arranged parallel to one end of the baffle, a carrier frame is provided at the center end of the limit frame, a drive motor is fixedly assembled in the carrier frame, a rotor is provided at the output end of the drive motor, connecting parts are symmetrically provided on the outer end side of the negative pressure box, the connecting seat is installed on the negative pressure box, a slot is provided at one end of the connecting seat, the protective component comprises a protective frame, and columns are symmetrically provided on one end of the protective frame, the columns provided on the protective frame are embedded in the slot provided at one end of the connecting seat, and are fixedly connected by a fixing bolt provided at one end of the connecting seat.

[0009] Preferably, the protection frame is designed as a cavity structure, and an adjustment plate is provided in the cavity, and the adjustment plate is rotatably mounted in the inner cavity of the protection frame through a movable bolt.

[0010] Preferably, a blocking plate is further provided at the bottom end side of the inner cavity of the protection frame, the blocking plate is designed as an inclined surface, and the blocking plate is welded to the bottom of the protection frame.

[0011] Preferably, positioning plates are welded at both ends of the connection seat, and the connection seat is detachably mounted on the end side of the negative pressure box through the positioning plates.

[0012] Preferably, a limiting hole is also opened on one end side of the negative pressure box, and the upper and lower ends of the baffle plate and the limiting frame are provided with holes with the same diameter as the limiting hole, and the baffle plate and the lower limiting frame are fixedly installed in the inner cavity of the negative pressure box through the first pin and the second pin.

[0013] Preferably, the notch provided at one end of the connection seat is adapted to the plug post provided at the end side of the protection frame, and the plug post is embedded in the notch provided at a port of the connection seat.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The utility model can prevent rainwater from splashing into the negative pressure fan by using multiple parts in the protective assembly. The protective assembly effectively blocks rainwater from entering the fan, preventing moisture from corroding the key components of the motor and blades, thereby ensuring the normal operation of the fan. Compared with the traditional negative pressure fan device, this device can prevent rainwater from entering the negative pressure fan during the rainy season.

[0016] (2) The utility model uses the adjustment plate and the movable bolt. In actual use, the adjustment plate can effectively prevent rain from splashing into the negative pressure fan. At the same time, through the cooperation of the movable bolt and the adjustment plate, the rotating plate can be adjusted according to the actual weather. When it is not necessary to prevent rain, the rotating plate is adjusted to a horizontal position, which can optimize air circulation and improve the ventilation efficiency of the negative pressure fan.

[0017] (3) The utility model can prevent rainwater that has entered the protection frame from flowing into the fan from the bottom plate of the protection frame by using the protection frame in combination with the baffle plate, thereby protecting the fan from moisture damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the negative pressure fan water ingress prevention device provided by the utility model;

[0019] Figure 2 This is a schematic diagram of the overall disassembled structure of the negative pressure fan water ingress prevention device provided by the utility model;

[0020] Figure 3 A schematic diagram of the installation structure of the baffle and the limit frame of the negative pressure fan water ingress prevention device provided by the utility model;

[0021] Figure 4 This is a schematic diagram of the installation structure of the protective component and the connecting seat of the negative pressure fan anti-water ingress device provided by the utility model.

[0022] Among them, the names corresponding to the figure marks are: 100, negative pressure fan body; 101, negative pressure box; 102, limit hole; 103, baffle; 104, first latch; 105, limit frame; 106, second latch; 107, carrier frame; 108, rotor; 200, protection component; 201, protection frame; 202, plug column; 203, movable bolt; 204, adjustment plate; 205, barrier plate; 300, connecting seat. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments. The present invention includes but is not limited to the following embodiments.

[0024] First embodiment:

[0025] like Figure 1-4 As shown, the negative pressure fan water ingress prevention device provided by the utility model comprises: a negative pressure fan body 100 and a protective component 200, the negative pressure fan body 100 comprises a negative pressure box 101, the negative pressure box 101 is a through-cavity structure design, a baffle 103 is fixedly provided on the inner cavity end side of the negative pressure box 101, a limit frame 105 is fixedly provided at one end of the baffle 103 in parallel, a carrier frame 107 is provided at the center end of the limit frame 105, a drive motor is fixedly installed in the carrier frame 107, a rotor blade 108 is provided at the output end of the drive motor, a connecting seat 300 is symmetrically provided on the outer end of the negative pressure box 101, the connecting seat 300 is installed on the negative pressure box 101, a notch is provided at one end of the connecting seat 300, and the protective component 200 includes a protective frame 201, and one end of the protective frame 201 is symmetrically provided with a column 202. The column 202 provided on the protective frame 201 is embedded in the groove provided at one end of the connecting seat 300, and is fixedly connected by a fixing bolt provided at one end of the connecting seat 300. In actual use, the staff fixes the connecting seat 300 to the end side of the negative pressure box 101 by positioning bolts. After the connecting seat 300 is fixed, the column 202 provided at the end of the protective frame 201 is aligned with the groove provided at the end of the connecting seat 300. When the columns 202 provided at the four corners of the protective frame 201 are inserted into the connecting seat 300, the protective frame 201 can be fixed by the fixing bolt provided at the other end of the connecting seat 300.

[0026] By using multiple parts in the protective component 200 in coordination, rainwater can be prevented from splashing into the negative pressure fan. The protective component 200 can effectively block rainwater from entering the inside of the fan, preventing moisture from corroding the key components of the drive motor and the rotor 108, thereby ensuring the normal operation of the fan. Compared with traditional negative pressure fan devices, this device can prevent rainwater from entering the negative pressure fan during the rainy season.

[0027] Second embodiment:

[0028] like Figure 4 As shown, the protective frame 201 is designed as a cavity structure, and an adjustment plate 204 is provided in the cavity. The adjustment plate 204 is rotatably installed in the inner cavity of the protective frame 201 through a movable bolt 203. In actual use, when encountering diversion rainy weather, the adjustment plate 204 can be rotated to 90° by adjusting the movable bolt 203.

[0029] By using the setting adjustment plate 204 and the movable bolt 203, in actual use, the setting adjustment plate 204 can effectively prevent rain from splashing into the negative pressure fan. At the same time, through the cooperation of the movable bolt 203 and the adjustment plate 204, the adjustment plate 204 can be rotated according to the actual weather. When there is no need to prevent rain, the adjustment plate 204 is adjusted to a horizontal position, which can optimize air circulation and improve the ventilation efficiency of the negative pressure fan.

[0030] Third embodiment:

[0031] like Figure 4 As shown, a blocking plate 205 is further provided at the bottom end side of the inner cavity of the protection frame 201 . The blocking plate 205 is designed as an inclined surface, and the blocking plate 205 is welded to the bottom of the protection frame 201 .

[0032] The protective frame 201 and the blocking plate 205 are used in combination to prevent rainwater that has entered the protective frame 201 from flowing from the bottom plate of the protective frame 201 into the interior of the fan, thereby protecting the fan from moisture damage.

[0033] Fourth embodiment:

[0034] like Figure 1 As shown, positioning plates are welded at both ends of the connection seat 300, and the connection seat 300 is detachably mounted on the end side of the negative pressure box 101 through the positioning plates.

[0035] The connection base 300 can be quickly installed and disassembled by the positioning plates provided at both ends of the connection base 300, so that it is convenient for subsequent staff to replace the connection base 300.

[0036] Fifth embodiment:

[0037] like Figure 1-3As shown, a limiting hole 102 is further provided on one end side of the negative pressure box 101, and holes with the same diameter as the limiting hole 102 are provided on the upper and lower ends of the baffle 103 and the limiting frame 105, and the baffle 103 and the lower limiting frame 105 are fixedly installed in the inner cavity of the negative pressure box 101 through the first latch 104 and the second latch 106. In actual use, the limiting frame 105, the driving motor and the rotor 108 are first placed as a whole in the inner cavity of the negative pressure box 101, and then the second latch 106 is cooperated with to insert it from the limiting hole 102 provided on the end side of the negative pressure box 101, so as to fix the limiting frame 105, and then the baffle 103 is placed in the inner cavity of the negative pressure box 101. Similarly, the baffle 103 is fixedly installed through the cooperation of the first latch 104.

[0038] By cooperating with the first latch 104 and the second latch 106, the baffle 103 and the limit frame 105 can be firmly installed. At the same time, the cooperation between the first latch 104 and the second latch 106 is more convenient and quicker in subsequent disassembly and installation than the traditional fixing method by rivets.

[0039] Working principle: In actual use, the staff fixes the connecting seat 300 to the end side of the negative pressure box 101 through the positioning bolts. After the connecting seat 300 is fixed, the plug column 202 provided at the end of the protective frame 201 is aligned with the groove provided at the end of the connecting seat 300. When the plug columns 202 provided at the four corners of the protective frame 201 are inserted into the connecting seat 300, the protective frame 201 is fixed by the fixing bolt provided at the other end of the connecting seat 300. When encountering diversion rainy weather, the adjusting plate 204 can be rotated to 90° by adjusting the movable bolt 203.

[0040] The above embodiment is only one of the preferred implementation modes of the present utility model and should not be used to limit the protection scope of the present utility model. Any changes or modifications that are made to the main design concept and spirit of the present utility model without any substantive significance, as long as the technical problems solved are still consistent with the present utility model, should be included in the protection scope of the present utility model.

Claims

1. A negative pressure fan water ingress prevention device, characterized in that: include: A negative pressure fan body (100) and a protective assembly (200), wherein the negative pressure fan body (100) comprises a negative pressure box (101), the negative pressure box (101) is designed as a through-cavity structure, a baffle (103) is fixedly provided on the inner cavity end side of the negative pressure box (101), a limit frame (105) is fixedly provided parallel to one end of the baffle (103), a carrier frame (107) is provided at the center end of the limit frame (105), a drive motor is fixedly installed in the carrier frame (107), and a rotor (108) is provided at the output end of the drive motor. The negative pressure box (101) is also symmetrically provided with a connection seat (300) at the outer end thereof. The connection seat (300) is mounted on the negative pressure box (101). A notch is provided at one end of the connection seat (300). The protection component (200) comprises a protection frame (201). One end of the protection frame (201) is symmetrically provided with plug posts (202). The plug posts (202) provided on the protection frame (201) are embedded in the notch provided at one end of the connection seat (300) and are fixedly connected by a fixing bolt provided at one end of the connection seat (300).

2. A negative pressure fan water ingress prevention device according to claim 1, characterized in that: The protection frame (201) is designed as a cavity structure, and an adjustment plate (204) is provided in the cavity. The adjustment plate (204) is rotatably mounted in the inner cavity of the protection frame (201) via a movable bolt (203).

3. A negative pressure fan water ingress prevention device according to claim 2, characterized in that: A blocking plate (205) is also provided at the bottom end side of the inner cavity of the protection frame (201); the blocking plate (205) is designed as an inclined surface, and the blocking plate (205) is welded to the bottom of the protection frame (201).

4. The negative pressure fan water ingress prevention device according to claim 1, characterized in that: Positioning plates are welded to both ends of the connection seat (300), and the connection seat (300) is detachably mounted on the end side of the negative pressure box (101) via the positioning plates.

5. A negative pressure fan water ingress prevention device according to claim 4, characterized in that: A limiting hole (102) is also provided at one end of the negative pressure box (101); holes having the same diameter as the limiting hole (102) are provided at the upper and lower ends of the baffle plate (103) and the limiting frame (105); and the baffle plate (103) and the lower limiting frame (105) are fixedly mounted in the inner cavity of the negative pressure box (101) via a first latch (104) and a second latch (106).

6. The negative pressure fan water ingress prevention device according to claim 4, characterized in that: The notch provided at one end of the connection seat (300) is adapted to the plug post (202) provided at the end side of the protection frame (201), and the plug post (202) is engaged with the notch provided at one end of the connection seat (300).

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