Dust removal and ventilation device for elevator

Abstract

The utility model discloses an elevator dust removal and ventilation device which comprises an outer barrel, an inner barrel and a flow guide plate, and the interior of the outer barrel is of a hollow structure; the inner barrel is installed in the outer barrel, an air supply cavity is formed between the periphery of the inner barrel and the inner side wall of the outer barrel, the flow guide plate is spiral and arranged in the air supply cavity, a spiral air supply channel is formed in the air supply cavity, and an ash removal piece is arranged at the bottom of the spiral air supply channel. An air inlet pipe and an air outlet pipe are arranged at the two ends of the spiral air supply channel respectively, one end of the air inlet pipe penetrates through the periphery of the outer barrel to be connected with an air outlet of the induced draft fan, one end of the air outlet pipe penetrates through the periphery of the outer barrel to be connected with an air inlet of the elevator car, and a filter screen is arranged on the air outlet pipe in the air flowing direction. After gas is subjected to two-stage filtration through the spiral air supply channel and the filter screen, clean gas is fed into the elevator car for ventilation, so that the service life of the filter screen is prolonged, the overhaul and maintenance frequency is reduced, and it is effectively guaranteed that the ventilation requirement in the elevator car is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of elevators and relates to a dust removal and ventilation device for elevators. Background Art

[0002] A vertical lift has a car that runs on at least two rigid rails that are perpendicular to the horizontal plane or inclined at an angle of less than 15° to the plumb line. The size and structure of the car are convenient for passengers to enter and exit or load and unload goods. Most existing vertical lifts use mechanical air supply to ventilate the elevator car. The gas in the elevator shaft sometimes has odor and dust, which will affect the quality of the gas after being sent into the elevator car by the fan. For this reason, most of them add a filter at the air inlet to filter the gas. However, the filter is prone to clogging or poor ventilation after long-term use, and cannot meet the normal ventilation needs of the elevator car. In addition, the ventilation holes in the car are usually located at the top of the car. Since the elevator car is in a closed state during operation, it is difficult to inspect and maintain the filter. Utility Model Content

[0003] In view of this, the purpose of the utility model is to provide an elevator dust removal and ventilation device to solve the technical problems mentioned in the prior art.

[0004] An elevator dust removal and ventilation device, comprising:

[0005] An outer cylinder, wherein the interior of the outer cylinder is a hollow structure;

[0006] An inner cylinder, the inner cylinder is installed in the outer cylinder, and an air supply chamber is formed between the outer periphery of the inner cylinder and the inner side wall of the outer cylinder;

[0007] The guide plate is spiral-shaped and is arranged in the air supply chamber to form a spiral air supply channel. A dust cleaning component is arranged at the bottom of the spiral air supply channel. An air inlet pipe and an air outlet pipe are arranged at both ends of the spiral air supply channel respectively. One end of the air inlet pipe passes through the outer periphery of the outer cylinder and is connected to the air outlet of the induced draft fan. One end of the air outlet pipe passes through the outer periphery of the outer cylinder and is connected to the air inlet of the elevator car. A filter is arranged on the air outlet pipe along the gas flow direction.

[0008] Optionally, the cleaning component includes a dust collection box, which is installed at the bottom of the outer cylinder. A collection groove is provided on the top of the dust collection box. The collection groove passes through the outer circumference of the outer cylinder along the opening direction and is connected with the bottom of the spiral air supply channel.

[0009] Optionally, an ash discharge port is provided on a side of the side wall of the aggregate trough close to the air inlet pipe.

[0010] Optionally, the depth of the aggregate trough decreases from a side close to the air inlet pipe toward a side close to the air outlet pipe.

[0011] Optionally, center lines of the inner cylinder coincide with those of the outer cylinder.

[0012] Optionally, a plurality of flow strips are provided on the outer periphery of the guide plate along the gas flow direction, and the extension direction of the flow strips intersects with the center line of the inner cylinder at one point.

[0013] Optionally, the flow strip is an activated carbon adsorption strip.

[0014] Optionally, a base is provided at the bottom of the dust collecting box.

[0015] The beneficial effects that the utility model can produce include:

[0016] The utility model provides an elevator dust removal and ventilation device, which designs a spiral air supply channel so that when the induced draft fan blows the external air of the elevator car into the spiral air supply channel through the air inlet pipe, the gas hits the side wall of the spiral air supply channel to block and filter part of the granular impurities in the gas, and then, with the continued flow of the gas, the pre-filtered gas is sent to the air outlet pipe for re-filtration through the filter, and the clean gas is sent into the elevator car for ventilation, thereby extending the service life of the filter, reducing the number of inspections and maintenance, and effectively ensuring that the ventilation needs in the elevator car are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of an elevator dust removal and ventilation device according to the utility model;

[0018] Figure 2 For the utility model Figure 1 Sectional view at AA;

[0019] Figure 3 For the utility model Figure 1 Cross-sectional view at BB;

[0020] Figure 4 For the utility model Figure 3 A schematic diagram of the structure of the inner cylinder, the guide plate and the flow strip;

[0021] In the figure: 1. outer cylinder, 2. inner cylinder, 3. air supply chamber, 4. guide plate, 5. spiral air supply channel, 6. air inlet pipe, 7. air outlet pipe, 8. filter, 9. dust collection box, 10. aggregate trough, 11. ash discharge port, 12. flow strip, 13. base. DETAILED DESCRIPTION

[0022] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to these embodiments.

[0023] like Figure 1-Figure 4 As shown, the utility model provides an elevator dust removal and ventilation device, including an outer cylinder 1, an inner cylinder 2 and a guide plate 4. The interior of the outer cylinder 1 is a hollow structure; the inner cylinder 2 is fixedly installed in the outer cylinder 1, and an air supply chamber 3 is formed between the outer periphery of the inner cylinder 2 and the inner side wall of the outer cylinder 1; the guide plate 4 is spiral, and the guide plate 4 is fixedly installed in the air supply chamber 3, and a spiral air supply channel 5 is formed in the air supply chamber 3, which is used to block and filter part of the granular impurities in the gas, and a dust cleaning part is provided at the bottom of the spiral air supply channel 5, which is used to collect the granular impurities filtered out when the gas flows along the spiral air supply channel 5, and an air inlet pipe 6 and an air outlet pipe 7 are respectively provided at both ends of the spiral air supply channel 5, one end of the air inlet pipe 6 passes through the outer periphery of the outer cylinder 1 and is connected to the air outlet of the induced draft fan, and one end of the air outlet pipe 7 passes through the outer periphery of the outer cylinder 1 and is connected to the air inlet of the elevator car, and the air outlet pipe 7 is provided with a filter 8 along the gas flow direction. In the above, by designing the spiral air supply channel 5, when the induced draft fan blows the external air of the elevator car into the spiral air supply channel 5 through the air inlet pipe 6, the gas hits the side wall of the spiral air supply channel 5 to block and filter some granular impurities in the gas, and then with the continued flow of the gas, the pre-filtered gas is sent to the air outlet pipe 7 and filtered again through the filter 8, and then the clean gas is sent into the elevator car for ventilation, thereby extending the service life of the filter 8, reducing the number of inspections and maintenance, and effectively ensuring that the ventilation needs in the elevator car are met.

[0024] Furthermore, the dust cleaning part includes a dust collecting box 9, which is fixedly mounted at the bottom of the outer cylinder 1. A collection trough 10 is provided at the top of the dust collecting box 9. The collection trough 10 passes through the outer periphery of the outer cylinder 1 along the opening direction and is connected to the bottom of the spiral air supply channel 5, so as to store the particulate impurities filtered out in the spiral air supply channel 5 in the collection trough 10. It should be noted that when the gas flows along the spiral air supply channel 5, the filtered particulate impurities can be brought into the collection trough 10, and because the top of the collection trough 10 is flush with the bottom of the spiral air supply channel 5, the top of the collection trough 10 is tangent to the flow direction of the gas, thereby avoiding blowing out the dust in the collection trough 10. It should be noted that, in the present embodiment, the center lines of the inner cylinder 2 and the outer cylinder 1 can be arranged so as not to overlap, so that the cross-sectional area of ​​the air supply chamber 3 on the side close to the aggregate trough 10 is larger than the cross-sectional area of ​​the air supply chamber 3 on the side away from the aggregate trough 10. As a result, when the gas is passed into the air supply chamber 3, the flow rate of the gas increases when it flows through the air supply chamber 3 on the side away from the aggregate trough 10, and the flow rate of the gas decreases when it flows through the air supply chamber 3 on the side close to the aggregate trough 10. This helps to collect the particulate impurities filtered out by the spiral air supply channel 5 into the aggregate trough 10. However, in order to avoid the dust in the aggregate trough 10 being sucked back into the spiral air supply channel 5 due to the change in the gas flow rate, the center lines of the inner cylinder 2 and the outer cylinder 1 are arranged to overlap, so as to ensure that the gas flow rate in the air supply chamber 3 is stable.

[0025] In the above-mentioned embodiment, a dust discharge port 11 is provided on the side wall of the aggregate trough 10 near the air inlet pipe 6, so as to facilitate the cleaning of the granular impurities collected in the aggregate trough 10. At the same time, the depth of the aggregate trough 10 decreases from the side near the air inlet pipe 6 toward the side near the air outlet pipe 7, thereby forming an inclined surface at the bottom of the aggregate trough 10, which helps the granular impurities inside the aggregate trough 10 to gather and discharge toward the side of the dust discharge port 11, so as to avoid excessive accumulation of dust in the aggregate trough 10 after the device is used for a long time, and the dust is brought to the surface of the filter screen 8 during the flow of gas, causing the filter screen 8 to be blocked or the ventilation effect to deteriorate.

[0026] In the above-mentioned embodiment, a plurality of flow strips 12 are fixedly installed on the outer periphery of the guide plate 4 along the gas flow direction, and the extension direction of the flow strips 12 intersects with the center line of the inner cylinder 2 at one point, further improving the pre-filtration effect of the gas in the spiral air supply channel 5. Among them, the flow strips 12 are activated carbon adsorption strips, which can adsorb and purify the odor contained in the gas blown into the air outlet pipe 7.

[0027] Furthermore, a base 13 is welded to the bottom of the dust collecting box 9, so as to facilitate the fixed installation of the device on the outside of the elevator car.

[0028] The above are only several embodiments of the utility model, and do not limit the utility model in any form. Although the utility model is disclosed as above in the preferred embodiments, it is not used to limit the utility model. Any technician familiar with this profession, without departing from the scope of the technical solution of the utility model, makes slight changes or modifications using the technical contents disclosed above, which are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An elevator dust removal and ventilation device, characterized in that: include: An outer cylinder (1), the interior of the outer cylinder (1) being a hollow structure; An inner cylinder (2), the inner cylinder (2) being installed in the outer cylinder (1), and an air supply chamber (3) being formed between the outer periphery of the inner cylinder (2) and the inner side wall of the outer cylinder (1); A guide plate (4), wherein the guide plate (4) is spiral-shaped and is arranged in the air supply chamber (3), forming a spiral air supply channel (5) in the air supply chamber (3), a dust cleaning component being arranged at the bottom of the spiral air supply channel (5), an air inlet pipe (6) and an air outlet pipe (7) being arranged at both ends of the spiral air supply channel (5), one end of the air inlet pipe (6) passing through the outer periphery of the outer cylinder (1) and being connected to the air outlet of the induced draft fan, one end of the air outlet pipe (7) passing through the outer periphery of the outer cylinder (1) and being connected to the air inlet of the elevator car, and a filter screen (8) being arranged along the gas flow direction of the air outlet pipe (7).

2. An elevator dust removal and ventilation device according to claim 1, characterized in that: The cleaning component comprises a dust collecting box (9), which is installed at the bottom of the outer cylinder (1). A collecting trough (10) is provided on the top of the dust collecting box (9), and the collecting trough (10) passes through the outer periphery of the outer cylinder (1) along the opening direction and is connected with the bottom of the spiral air supply channel (5).

3. An elevator dust removal and ventilation device according to claim 2, characterized in that: An ash discharge port (11) is provided on a side of the side wall of the aggregate trough (10) close to the air inlet pipe (6).

4. An elevator dust removal and ventilation device according to claim 3, characterized in that: The depth of the collecting trough (10) decreases gradually from the side close to the air inlet pipe (6) toward the side close to the air outlet pipe (7).

5. The elevator dust removal and ventilation device according to claim 1, characterized in that: The center lines of the inner cylinder (2) and the outer cylinder (1) coincide with each other.

6. The elevator dust removal and ventilation device according to claim 1, characterized in that: A plurality of flow strips (12) are arranged on the outer periphery of the guide plate (4) along the gas flow direction, and the extension direction of the flow strips (12) intersects with the center line of the inner cylinder (2) at one point.

7. An elevator dust removal and ventilation device according to claim 6, characterized in that: The flow strip (12) is an activated carbon adsorption strip.

8. An elevator dust removal and ventilation device according to claim 2, characterized in that: The bottom of the dust collecting box (9) is provided with a base (13).

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