Elevator dust collector

Abstract

To provide an elevator comprising an inexpensive space-saving type dust collector without the need for especially providing a dust collector, and without requiring piping therefor.SOLUTION: A part of an intermediate space formed in a pair of intermediate elevator case gaps is made to be a dust chamber. Then, in the intermediate space, a pipeline with a lower end made to face the dust chamber is erected, and an upper end of the pipeline is made to face an inside of a chevron-shaped partition plate inside an upper portion elevator case to form a dust sucking chamber from a guide plate and an upper portion elevator case inner wall inside the upper portion elevator case. A first sucking portion is provided on one side face of the upper portion elevator case for forming the dust sucking chamber, and a second sucking portion in communication with the inside of the chevron-shaped partition plate is provided on the one side face of the upper portion elevator case. These first and second sucking portions are communicated and continuously connected by an external duct.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates primarily to a bucket-type elevator, and more particularly to a dust collecting device for an elevator. [Background technology]

[0002] This type of elevator is well known and consists of an upper elevator case, a lower elevator case, and an intermediate elevator case located between them. Pulleys are journaled within the upper and lower elevator cases, and an endless bucket belt is stretched between the pulleys.

[0003] The elevator scoops up granular materials such as grains in a bucket inside a lower elevator case, throws the granular materials using the bucket inside an upper elevator case, and discharges them from a discharge port in the upper elevator case. However, while the grains are being lifted and transported, dust mixed in the grains becomes fine particles and rises up. In particular, since a large amount of dust is generated when the granular materials are thrown, it is known to connect one end of a dust exhaust duct to an opening in the wall of the upper elevator case and connect the other end to the exhaust chamber of a grain dryer (Patent Document 1), or to connect the upper elevator cases of multiple elevators in series with a dust exhaust duct and centrally exhaust the dust using a common dust collector installed at the end of the dust exhaust duct. Furthermore, Patent Document 2 discloses an elevator connected to a cargo receiving hopper, in which the opposing space (intermediate space) formed between the ascending elevator case and the descending elevator case is used as a dust exhaust duct to transport dust generated in the cargo receiving hopper to a dust collector through a dust exhaust pipe installed near the upper elevator case. However, the above-mentioned patent documents all require piping such as a dust exhaust duct leading to the dust collector separate from the elevator, and the centralized dust collector is large and expensive. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 54-166681 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-335491 Summary of the Invention [Problem to be solved by the invention]

[0005] In view of the above problems, the present invention aims to provide an elevator equipped with an inexpensive, space-saving dust collector that does not require a special dust collector or piping for that purpose. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides an elevator comprising an upper pulley journaled in an upper elevator case and a lower pulley journaled in a lower elevator case, with a bucket belt stretched between the upper pulley journaled in an upper elevator case and a lower pulley journaled in a lower elevator case, wherein two intermediate elevator cases are erected in parallel, through which the ascending side and the descending side of the bucket belt are inserted separately, and an intermediate space is formed between these two opposing intermediate elevator cases, A part of the intermediate space is used as a dust collection chamber equipped with a filter and an exhaust fan, and a pipe is erected in the intermediate space so that its lower end faces the dust collection chamber, and the upper end of the pipe is located directly below the upper pulley. above Elevating bucket belt and under a guide plate for hitting granular objects thrown by the bucket belt on one side of the interior of the upper elevator case, the guide plate and the inner wall of the upper elevator case forming a dust collection chamber; a first suction port on one side of the upper elevator case forming the dust collection chamber; and a second suction port on one side of the upper elevator case that communicates with the interior of the angled partition, the first and second suction ports being connected by an external duct.

[0007] The dust collecting chamber has the intermediate space separated by a panel. air It is preferable to form the panel in a tightly covering state, with a part of the panel serving as a door.

[0008] A dust collection box may be provided at the bottom of the dust collection chamber.

[0009] A lower air passage may be vertically provided from the bottom of the dust collection chamber toward the lower elevator case. [Effects of the Invention]

[0010] According to the present invention, dust generated when granular material thrown by the bucket collides with the guide plate is guided into the dust collection chamber, while the upper end of a pipe whose lower end faces the dust collection chamber formed in the intermediate space is positioned within the angled partition plate, and the dust collection chamber and the interior of the angled partition plate are connected in communication with each other by an external duct.As a result, dust in the dust collection chamber is introduced from the external duct through the pipe and into the dust collection chamber for dust collection, making it possible to collect dust within the elevator without installing a large, expensive dust collection device.

[0011] The dust collection chamber is formed by covering a portion of the intermediate space between a pair of conventionally existing intermediate elevator cases in an almost airtight manner with a panel, so there is no need to form a dust collection chamber outside the elevator, making it compact.

[0012] Furthermore, if a collection box is provided at the bottom of the dust collection chamber, dust can be easily collected.

[0013] Furthermore, by providing a lower air passage extending downward from the dust collection chamber, it becomes possible to simultaneously collect dust generated within the lower elevator case. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is an overall perspective view of an elevator showing an embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged view of the upper elevator case in FIG. 1. [Figure 3]FIG. 3 is a cross-sectional view of FIG. 2. [Figure 4] FIG. 2 is an enlarged view of the intermediate elevator case in FIG. 1. [Figure 5] FIG. 2 is an enlarged cross-sectional view of the dust collection chamber in FIG. [Figure 6] FIG. 2 is a perspective view showing the dust collection chamber in FIG. [Figure 7] FIG. 4 is a perspective view showing a filter in the dust collection chamber. [Figure 8] FIG. 10 is a cross-sectional view showing another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall perspective view of a bucket-type elevator 1 showing an embodiment of the present invention, FIG. 2 is an enlarged view of the upper elevator case in FIG. 1, FIG. 3 is a cross-sectional view of FIG. 2, and FIG. 4 is an enlarged view of the intermediate elevator case. The elevator 1 consists of an upper elevator case 2, a lower elevator case 3, and an intermediate elevator case 4. An upper pulley 6 supported by an upper shaft 5 is provided in the upper elevator case 2, and a lower pulley 10 (see Figure 8) supported by a lower shaft 9 is provided in the lower elevator case 3, both of which are rotatable.

[0016] The intermediate elevator case 4 is provided between the upper elevator case 2 and the lower elevator case 3. The intermediate elevator case 4 consists of an ascending elevator case 4a and a descending elevator case 4b that face each other in parallel, and an endless bucket belt 7 that runs between the upper pulley 6 and the lower pulley is inserted into the ascending elevator case 4a and the descending elevator case 4b. A plurality of buckets 8 are attached to the bucket belt 7 at equal intervals. A motor and a chain (neither shown) that drive a sprocket attached to the upper shaft 5 are provided inside a safety cover 11 provided on the outside of the upper elevator case 2, and these allow the bucket belt 7 to rotate between the upper and lower pulleys.

[0017] The intermediate elevator case 4 is divided into three sections vertically, with pairs of upward and downward cases facing parallel to each other in the vertical direction. That is, the upper part of the intermediate elevator case 4 consists of upward elevator case 4a1 and downward elevator case 4b1, and the lower part consists of upward elevator case 4a3 and downward elevator case 4b3, with upward elevator case 4a2 and downward elevator case 4b2 provided between them. Joining flanges 12 are provided at the upper and lower ends of each of the upward and downward elevator cases, and the intermediate elevator case 4 is formed by joining the flanges 12. Furthermore, the upper end of the intermediate elevator case 4 is joined to the lower end of the upper elevator case 2, and the lower end of the intermediate elevator case 4 is joined to the upper end of the lower elevator case 3, respectively, by the flanges 12, thereby forming the entire elevator 1 as a single unit.

[0018] A plurality of reinforcing stays 13 are provided in an intermediate space 14 formed between the ascending elevator case and each of the descending elevator cases in the intermediate elevator case 4, and a dust collection chamber 15 is formed in the intermediate space 14 between the lower ascending elevator case 4a3 and descending elevator case 4b3. The dust collection chamber 15 will be described below with reference to Figures 5 and 6.

[0019] A front panel 16 is provided on the front side of the dust collection chamber 15 (in this embodiment, this refers to the side where the safety cover 11 is provided), a rear panel 17 is provided on the rear side, and an upper panel 18 is provided on the top side.Furthermore, a collection box 19 that can be freely inserted and removed from the front side is provided at the bottom, thereby making the dust collection chamber 15 approximately airThe dust collecting chamber 15 is formed in a dense pattern. A filter shelf 20 is provided in the dust collecting chamber 15, and a filter (filtering machine) 21 is installed by inserting it into holes 20a provided in the filter shelf 20. The filter 21 comprises a filter cloth 21a and a retainer 21b that holds the filter cloth 21a. A flange 21c at the upper end of the retainer 21b is placed on the periphery of the hole 20a of the filter shelf 20, allowing the filter 21 to be detachably installed (see FIG. 7). An air nozzle 22 is provided on the flange 21c, with its tip facing the inside of the retainer 21b. By intermittently spraying high-pressure air from an air source (not shown), dust adhering to the filter cloth 21a can be dropped into the collection box 19.

[0020] A suction type exhaust fan 23 is provided on the upper part of the front panel 16, and the front panel 16 between the exhaust fan 23 and the collection box 19 serves as a door 16a. As a result, when the door 16a is closed, the inside of the dust collection chamber 15 is approximately air The upper elevator case 2 is formed in a dense shape. The lower end of a duct 24 for supplying dust generated in the upper elevator case 2 to the dust collection chamber 15 faces the bottom of the dust collection chamber 15. That is, the duct 24 penetrates the filter shelf 20 and the top panel 18 of the dust collection chamber 15, extends upward within the intermediate space 14, and is erected with its upper end facing the upper elevator case 2.

[0021] Within the upper elevator case 2, directly below the upper pulley 6, there is provided a mountain-shaped partition plate 25 with its peak facing in the axial direction of the upper shaft 5. The mountain-shaped partition plate 25 is formed by extending upward on the opposing inner walls of the upper ascending-side elevator case 4a1 and the descending-side elevator case 4b1 of the intermediate elevator case 4, i.e., the side wall on the intermediate space 14 side, and is sandwiched between the ascending-side and descending-side bucket belts 7 and formed across the front wall and rear wall of the upper elevator case 2, and is provided so as to be isolated from other spaces within the upper elevator case 2.

[0022] A guide plate 26 is provided above the discharge portion 2a of the upper elevator case 2 to guide granular material thrown from each bucket 8 toward the discharge portion 2a. The guide plate 26 is provided with its lower portion inclined toward the outside of the upper elevator case 2, and a dust collection chamber 27 is formed by the guide plate 26 and the inner wall of the upper elevator case 2. A dust collection port 27a for introducing dust into the dust collection chamber 27 is formed near the lower end of the guide plate 26. Furthermore, a first suction port 28 is provided in the front wall or rear wall of the upper elevator case 2 which forms the dust collection chamber 27, while a second suction port 29 which communicates with the inside of the angled partition plate 25 is opened in the front wall or rear wall of the upper elevator case 2 on the side where the first suction port 28 is provided (the same side as the first suction port 28), and these first suction port 28 and second suction port 29 are connected in communication by an external duct 30 which is provided on the front side or rear side of the upper elevator case 2 (the same side as the first suction port 28).

[0023] As described above, in this embodiment, dust generated when granular material thrown by bucket 8 collides with guide plate 26 inside upper elevator case 2 is introduced into dust collection chamber 27 through dust suction port 27a, and then, by the suction action of exhaust fan 23, passes through first suction port 28, external duct 30, and second suction port 29 into angled partition plate 25, and is then transported by duct 24 into dust collection chamber 15. In dust collection chamber 15, the air is filtered by filter 21 and then discharged outside the elevator as clean air, with dust dropping from filter 21 to be collected in dust collection box 19.

[0024] 8 shows another embodiment. In this embodiment, a lower duct 31 is provided that hangs down from the bottom of the dust collection chamber 15 into the lower elevator case 3 to remove dust generated when the bucket 8 scoops up granular material inside the lower elevator case 3. In this case, the relatively short lower duct 31 can effectively collect dust inside the lower elevator case 3. Furthermore, by combining this embodiment with the previous embodiment, dust generated inside the elevator 1 can be more completely collected. [Industrial Applicability]

[0025] According to the present invention, a dust collection chamber can be provided by utilizing the intermediate space of an existing elevator, and dust generated in the upper elevator case can be efficiently transported and collected, making it possible to use it as an inexpensive, space-saving dust collection device. [Explanation of symbols]

[0026] 1 elevator 2 Upper elevator case 3 Lower elevator case 4 Intermediate elevator case 5 Upper shaft 6 Upper pulley 7 Bucket Belt 8 buckets 9 Lower Axis 10 Lower pulley 11 Safety Cover 12 flange 13 Stay 14 Intermediate Space 15 Dust collection chamber 16 Front Panel 17 Rear Panel 18 Top Panel 19 Collection Box 20 filter shelves 21 Filters 22 Air nozzle 23 Exhaust fan 24 Conduit 25 Chevron divider 26 Signboard 27 Dust collection room 28 First intake port 29 Second intake port 30 External Duct 31 Lower Pipe

Claims

1. An elevator comprising an upper pulley journaled in an upper elevator case and a lower pulley journaled in a lower elevator case, with a bucket belt stretched between them, wherein two intermediate elevator cases are erected in parallel, through which the ascending side and the descending side of the bucket belt are inserted separately, and an intermediate space is formed between these two opposing intermediate elevator cases; a dust collection chamber formed by an inner wall of the upper elevator case; a first suction port provided on one side of the upper elevator case that communicates with the interior of the angle-shaped partition plate; and a second suction port provided on one side of the upper elevator case that communicates with the interior of the angle-shaped partition plate. The first and second suction ports are connected to each other by an external duct.

2. 2. The dust collecting device for an elevator according to claim 1, wherein the dust collecting chamber is formed by covering the intermediate space with a panel in a substantially airtight manner, and a part of the panel serves as a door.

3. 3. A dust collecting device for an elevator according to claim 2, wherein a dust collecting box is provided at the bottom of said dust collecting chamber.

4. 3. A dust collecting device for an elevator according to claim 2, wherein a lower air passage is vertically extended from the bottom of said dust collecting chamber toward said lower elevator case.

Images