Ventilation device for elevator car

Abstract

The utility model discloses an elevator car ventilation device, and particularly relates to the technical field of elevator equipment, the elevator car ventilation device comprises an elevator, the upper end of the elevator is fixedly connected with a dust cover, the upper end of the dust cover is fixedly connected with three dust blocking mechanisms, the middle part of the upper end of the dust cover is fixedly connected with a motor, the upper end of the elevator is rotatably connected with an air inlet mechanism, and the air inlet mechanism is connected with an air outlet. The output end of the motor is fixedly connected with a rotating mechanism, the front portion of the bottom wall of the inner cavity of the elevator is fixedly connected with a storage box, and a plurality of air outlets are formed in the lower portion of the front end of the elevator. According to the ventilation device for the elevator car, dust can be prevented from entering the elevator car; the fan drives the brush to synchronously rotate through the transmission rod, dust on the surface of the sieve plate is continuously cleaned, the problem that the sieve plate is blocked due to dust accumulation of a traditional dustproof structure is solved, frequent manual cleaning is not needed, the ventilation efficiency is guaranteed, the maintenance cost is reduced, and the sieve plate allows air to pass while blocking dust. And efficient balance of dust prevention and ventilation is realized.

Description

Technical Field

[0001] This utility model relates to the field of elevator equipment technology, and in particular to an elevator car ventilation and air exchange device. Background Technology

[0002] In modern buildings, elevators are an indispensable vertical transportation tool, and the air quality inside their cars directly affects passenger comfort, health, and safety. Elevator cars are relatively enclosed spaces with frequent passenger flow, making them prone to problems such as poor air circulation, increased carbon dioxide concentration, and odor buildup. These issues are particularly pronounced during peak hours or when the cars are crowded.

[0003] Chinese Patent Publication No. CN215101375U discloses a ventilation and air exchange device for an elevator car. This utility model relates to the field of elevator technology. One end of the first rotating rod is fitted with a first bevel gear. The other end of the first rotating rod passes through the elevator car and is movably connected to a handle. One end of the second rotating rod is fitted with a second bevel gear, which meshes with the first bevel gear. The other end of the second rotating rod passes through the gearbox and is fitted with a first gear. An installation cavity is opened at the top of the elevator car. A motor is fixed at the bottom of the installation cavity. The output shaft of the motor is fixed to one end of the third rotating rod using a coupling. The fourth and fifth rotating rods are movably mounted in the installation cavity using bearings. Fan blades and a second gear are fitted and fixed on the third and fourth rotating rods. A reversing gear is fitted and fixed on the fifth rotating rod. The first gear, the second gear, and the reversing gear are meshed together.

[0004] The aforementioned patent documents still have the following defects in practice:

[0005] Without a dustproof function, the screen plate is prone to clogging when used in dusty environments, affecting ventilation. Utility Model Content

[0006] The main purpose of this utility model is to provide an elevator car ventilation device that can effectively solve the problems mentioned above.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] An elevator car ventilation device includes an elevator, a dust cover fixedly connected to the upper end of the elevator, three dust blocking mechanisms fixedly connected to the upper end of the dust cover, a motor fixedly connected to the middle of the upper end of the dust cover, an air intake mechanism rotatably connected to the upper end of the elevator, a rotating mechanism fixedly connected to the output end of the motor, a storage box fixedly connected to the front of the bottom wall of the elevator cavity, and several air outlets provided at the lower front end of the elevator.

[0009] Preferably, the air intake mechanism includes three support rods. The lower end of the support rod is rotatably connected to the upper end of the elevator. A fan is fixedly connected to the upper end of the support rod. A pulley 1 is fixedly connected to the outer surface of the support rod. The outer surfaces of the three pulleys 1 are covered by a transmission belt 1. A pulley 2 is fixedly connected to the upper part of the outer surface of the support rod at the front. The outer surface of the pulley 2 is covered by a transmission belt 2. A pulley 3 is wound around the end of the transmission belt 2 away from the pulley 2.

[0010] Preferably, the dust-blocking mechanism includes a transmission rod and a sieve plate. The lower end of the transmission rod is fixedly connected to the middle of the upper end of the fan. A brush is fixedly connected to the upper part of the outer surface of the transmission rod. The outer surface of the sieve plate is fixedly connected to the upper end of the dust cover.

[0011] Preferably, the transmission rod passes through the sieve plate, and the lower end of the brush contacts the upper end of the sieve plate.

[0012] Preferably, the rotating mechanism includes a connecting rod and a sleeve rod. The upper end of the connecting rod is fixedly connected to the output end of the motor. A moving block is slidably connected to the inner surface of the connecting rod. The upper end of the sleeve rod is fixedly connected to the lower end of the pulley. The lower end of the sleeve rod is magnetically connected to the inner surface of the fixed rod. An extension rod is fixedly connected to the bottom wall of the inner surface of the fixed rod. A handle is fixedly connected to the lower end of the outer surface of the fixed rod.

[0013] Preferably, the upper part of the moving block is provided with a stop block, the middle part of the outer surface of the sleeve rod is rotatably connected to the upper end of the elevator, and the outer surface of the protruding rod is embedded in the inner surface of the sleeve rod and can slide on the inner surface of the sleeve rod.

[0014] Preferably, the outer surface of the movable block has several protrusions, the inner surface of the connecting rod is fitted with the movable block, and the shape of the outer surface of the protruding rod is consistent with the shape of the outer surface of the movable block.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In this embodiment, a screen plate is installed at the upper end of the dust cover to prevent dust from entering the car. The fan drives the brush to rotate synchronously through the transmission rod, continuously cleaning the dust on the surface of the screen plate. This avoids the problem of screen plate blockage caused by dust accumulation in traditional dustproof structures, eliminating the need for frequent manual cleaning. This ensures ventilation efficiency and reduces maintenance costs. The screen plate blocks dust while allowing air to pass through, achieving a highly efficient balance between dust prevention and ventilation. It is especially suitable for environments with a lot of dust and extends the service life of the equipment.

[0017] 2. In this embodiment, a detachable rotating mechanism is set up. The rotating mechanism adopts a magnetic detachable design. When the power supply is normal, the motor drives the sleeve rod and the pulley to rotate through the connecting rod, the moving block and the pulley. When the elevator loses power or malfunctions, the combination of the fixed rod, the extension rod and the handle can be taken out from the storage box. The sleeve rod is connected by magnetic attraction, and the handle is manually rotated to drive the air intake mechanism to ensure that the air circulation in the car is uninterrupted, thereby improving the safety and emergency response capability of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of part of the mechanism structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the rotating mechanism structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall structure of this utility model from another perspective.

[0023] In the diagram: 1. Elevator; 2. Dust cover; 3. Dust blocking mechanism; 31. Screen plate; 32. Brush; 33. Transmission rod; 4. Motor; 5. Air intake mechanism; 51. Fan; 52. Belt pulley one; 53. Transmission belt one; 54. Belt pulley two; 55. Belt pulley three; 56. Transmission belt two; 57. Support rod; 6. Rotating mechanism; 61. Connecting rod; 62. Moving block; 63. Extending rod; 64. Sleeve rod; 65. Fixing rod; 66. Handle; 7. Storage box; 8. Air outlet. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] Example 1, as Figures 1-2 As shown, an elevator car ventilation device includes an elevator 1, a dust cover 2 fixedly connected to the upper end of the elevator 1, three dust blocking mechanisms 3 fixedly connected to the upper end of the dust cover 2, a motor 4 fixedly connected to the middle of the upper end of the dust cover 2, an air inlet mechanism 5 rotatably connected to the upper end of the elevator 1, a rotating mechanism 6 fixedly connected to the output end of the motor 4, a storage box 7 fixedly connected to the front of the bottom wall of the inner cavity of the elevator 1, and several air outlets 8 provided at the lower front end of the elevator 1.

[0026] In this embodiment, the motor 4 is started, and the motor 4 drives the air intake mechanism 5 to operate, drawing fresh air into the dust cover 2. The fresh air enters the inner cavity of the elevator 1 through the ventilation opening at the top of the elevator 1. The stale air is blown out of the elevator 1 from the air outlet 8. The dust blocking mechanism 3 operates synchronously with the air intake mechanism 5 to clean the dust on the top of the dust cover 2, ensuring the continuous entry of fresh air. When the elevator 1 malfunctions, a part of the rotating mechanism 6 is taken out from the storage box 7 and combined with a part of the rotating mechanism 6 located at the top of the elevator 1, so that the air intake mechanism 5 can be manually driven to operate, ensuring the circulation of air inside the elevator 1.

[0027] To allow fresh air to enter the elevator cavity 1, refer to... Figure 3 The air intake mechanism 5 includes three support rods 57. The lower end of the support rods 57 is rotatably connected to the upper end of the elevator 1. A fan 51 is fixedly connected to the upper end of the support rods 57. A pulley 52 is fixedly connected to the outer surface of the support rods 57. The outer surfaces of the three pulleys 52 are covered with a drive belt 53. A pulley 54 is fixedly connected to the upper part of the outer surface of the support rods 57 at the front. A drive belt 56 is covered on the outer surface of the pulley 54. A pulley 55 is wound around the end of the drive belt 56 away from the pulley 54.

[0028] During implementation, motor 4 drives pulley 3 55 to rotate via connecting rod 61. Pulley 3 55 drives pulley 2 54 to rotate via transmission belt 2 56. Pulley 2 54 drives pulley 1 52 to rotate via support rod 57. Pulley 1 52 drives the three pulleys 1 52 to rotate synchronously via transmission belt 1 53. The rotation of pulley 1 52 drives the three support rods 57 to rotate. The three support rods 57 drive the three fans 51 to rotate, drawing air into the cavity of elevator 1. The function of the three fans 51 is that the small fans are quieter than the large fans, and the three small fans can disperse the noise and improve the comfort of people in elevator 1.

[0029] To prevent dust from entering elevator 1, please refer to... Figure 3 The dust blocking mechanism 3 includes a transmission rod 33 and a screen plate 31. The lower end of the transmission rod 33 is fixedly connected to the middle of the upper end of the fan 51. A brush 32 is fixedly connected to the upper part of the outer surface of the transmission rod 33. The outer surface of the screen plate 31 is fixedly connected to the upper end of the dust cover 2. The transmission rod 33 passes through the screen plate 31. The lower end of the brush 32 contacts the upper end of the screen plate 31.

[0030] During implementation, the fan 51 drives the transmission rod 33 and the brush 32 to rotate. The brush 32 rotates synchronously with the fan 51 to sweep away the dust falling on the screen plate 31. The screen plate 31 blocks the dust outside the dust cover 2. The brush 32 cleans the screen plate 31 to prevent dust from clogging the screen plate 31.

[0031] Example 2: To ensure air circulation inside elevator 1 even during a power outage, refer to... Figure 4 The rotating mechanism 6 includes a connecting rod 61 and a sleeve rod 64. The upper end of the connecting rod 61 is fixedly connected to the output end of the motor 4. A moving block 62 is slidably connected to the inner surface of the connecting rod 61. The upper end of the sleeve rod 64 is fixedly connected to the lower end of the pulley 55. The lower end of the sleeve rod 64 is magnetically connected to the inner surface of the fixed rod 65. An extension rod 63 is fixedly connected to the bottom wall of the inner surface of the fixed rod 65. A handle 66 is fixedly connected to the lower end of the outer surface of the fixed rod 65. A stop block is fixedly connected to the upper part of the moving block 62. The middle part of the outer surface of the sleeve rod 64 is rotatably connected to the upper end of the elevator 1.

[0032] During implementation, when elevator 1 is powered, the moving block 62 slides downward, and the upper stop of the moving block 62 is blocked by the lower part of the connecting rod 61. The motor 4 drives the connecting rod 61 to rotate, the connecting rod 61 drives the moving block 62 to rotate, the moving block 62 drives the sleeve rod 64 to rotate, and the sleeve rod 64 drives the pulley 3 55 to rotate.

[0033] When the elevator 1 loses power, take out the combination of handle 66, fixed rod 65 and extension rod 63 from the storage box 7, insert the extension rod 63 along the inner surface of sleeve rod 64, and when sleeve rod 64 and fixed rod 65 magnetically attract each other, the extension rod 63 pushes the moving block 62 back into the connecting rod 61. At this time, grab handle 66 to drive fixed rod 65 and extension rod 63 to rotate, and extension rod 63 drives sleeve rod 64 and pulley 55 to rotate.

[0034] For further details, please refer to [link / reference]. Figure 4 The outer surface of the extension rod 63 is fitted with the inner surface of the sleeve rod 64 and can slide on the inner surface of the sleeve rod 64. The outer surface of the moving block 62 has several protrusions. The inner surface of the connecting rod 61 is fitted with the moving block 62. The shape of the outer surface of the extension rod 63 is consistent with the shape of the outer surface of the moving block 62.

[0035] During implementation, the protrusions are of the same shape and number, so that the moving block 62 can slide inside the connecting rod 61 and the sleeve rod 64, the protruding rod 63 can slide inside the sleeve rod 64, and they can also drive each other to rotate.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An elevator car ventilation and air exchange device, comprising an elevator (1), characterized in that: The elevator (1) is fixedly connected to a dust cover (2) at the top. The dust cover (2) is fixedly connected to three dust-blocking mechanisms (3). The dust cover (2) is fixedly connected to a motor (4) at the middle of the top. The elevator (1) is rotatably connected to an air intake mechanism (5). The output end of the motor (4) is fixedly connected to a rotating mechanism (6). The elevator (1) is fixedly connected to a storage box (7) at the front of the bottom wall of the inner cavity. The elevator (1) is provided with several air outlets (8) at the lower front end.

2. The elevator car ventilation device according to claim 1, characterized in that: The air intake mechanism (5) includes three support rods (57). The lower end of the support rod (57) is rotatably connected to the upper end of the elevator (1). A fan (51) is fixedly connected to the upper end of the support rod (57). A pulley (52) is fixedly connected to the outer surface of the support rod (57). The outer surfaces of the three pulleys (52) are covered by a transmission belt (53). A pulley (54) is fixedly connected to the upper part of the outer surface of the support rod (57) at the front. A transmission belt (56) is covered on the outer surface of the pulley (54). A pulley (55) is wound around the end of the transmission belt (56) away from the pulley (54).

3. The elevator car ventilation device according to claim 2, characterized in that: The dust-blocking mechanism (3) includes a transmission rod (33) and a sieve plate (31). The lower end of the transmission rod (33) is fixedly connected to the middle of the upper end of the fan (51). A brush (32) is fixedly connected to the upper part of the outer surface of the transmission rod (33). The outer surface of the sieve plate (31) is fixedly connected to the upper end of the dust cover (2).

4. The elevator car ventilation device according to claim 3, characterized in that: The transmission rod (33) passes through the sieve plate (31), and the lower end of the brush (32) contacts the upper end of the sieve plate (31).

5. The elevator car ventilation device according to claim 1, characterized in that: The rotating mechanism (6) includes a connecting rod (61) and a sleeve rod (64). The upper end of the connecting rod (61) is fixedly connected to the output end of the motor (4). A moving block (62) is slidably connected to the inner surface of the connecting rod (61). The upper end of the sleeve rod (64) is fixedly connected to the lower end of the pulley (55). The lower end of the sleeve rod (64) is magnetically connected to the inner surface of the fixed rod (65). An extension rod (63) is fixedly connected to the bottom wall of the inner surface of the fixed rod (65). A handle (66) is fixedly connected to the lower end of the outer surface of the fixed rod (65).

6. The elevator car ventilation device according to claim 5, characterized in that: The upper part of the moving block (62) is fixedly connected to a stop block, the middle part of the outer surface of the sleeve rod (64) is rotatably connected to the upper end of the elevator (1), and the outer surface of the protruding rod (63) is embedded in the inner surface of the sleeve rod (64) and can slide on the inner surface of the sleeve rod (64).

7. The elevator car ventilation device according to claim 6, characterized in that: The outer surface of the movable block (62) has several protrusions, the inner surface of the connecting rod (61) is fitted with the movable block (62), and the outer surface shape of the protruding rod (63) is consistent with the outer surface shape of the movable block (62).

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