Fitting structure of pressure measurement piping in dust collector

Abstract

To provide a fitting structure of a pressure measurement piping in a dust collector which enables a safe and an easy maintenance work with no need of work inside a dust collector body during the maintenance work related to a pressure sensor.SOLUTION: This fitting structure has an outer plate 21, fixed by coupling means from outside of a dust collector 1 onto the outer face of the dust collector and an inner plate 22, equipped with piping joint member which can connect a pressure measurement air hose from outside of the dust collector 1 on one face and a filter suction piping member on the other face, where the inner plate 22 is characterized by facing the plate opening 211 of the outer plate 21 to be fixed on the collector side face of the outer plate 21, and to keep an opening 16 leading to the interior of the dust collector 1 formed in the outer face of the dust collector 1, and by fitting the inner plate 22 with the opening 16 to keep the outer plate 21 fixed on the dust collector 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a mounting structure for pressure measurement piping provided in a dust collector. [Background technology]

[0002] Conventionally, in dust collectors using a bag filter such as that disclosed in Patent Document 1, a method for extending the life of the bag filter has been to provide pressure sensors in the dust collection chamber and clean chamber inside the dust collector, and when the differential pressure detected by the pressure sensors reaches a predetermined differential pressure, backwash air is sprayed into the bag filter to knock off dust adhering to the bag filter.

[0003] In order to accurately determine a specific differential pressure using a pressure sensor as described above, it is necessary to perform maintenance (cleaning or replacement) of the filter-equipped suction piping member of the pressure sensor attached to the dust collector.In particular, pressure sensors installed inside a dust collection chamber are susceptible to clogging in a short period of time due to dust adhesion and accumulation on the filter due to changes in temperature and humidity, as there is a large amount of dust in the dust collection chamber. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 06-190229 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in conventional dust collectors, the pipe joint member of the pressure sensor is fixed by direct welding to the outside of the dust collector body, so maintenance (cleaning or replacement) of the filter-equipped suction pipe member located inside the dust collector body cannot be performed from the outside of the dust collector body. Therefore, to perform maintenance, a worker must enter the dust collector body to perform the maintenance work.

[0006] That is, in order to perform maintenance on the filter-equipped suction piping member, it is necessary to remove the bag filter installed inside the dust collector body, secure a working space, and perform the maintenance work using unstable scaffolding installed inside the dust collector body. Therefore, there are problems such as a decrease in productivity due to the dust collector being shut down for a long time for maintenance work, and the maintenance work itself being dangerous for the worker.

[0007] In view of these problems, the present invention aims to provide a mounting structure for pressure measurement piping in a dust collector that enables maintenance work related to a pressure sensor to be performed safely and easily without the need to perform the work inside the dust collector body. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides an installation structure for pressure measurement piping in a dust collector having a dust collection chamber and a clean chamber, comprising: an outer plate fixed to an outer surface of the dust collector from outside the dust collector by a fastening means; and an inner plate having on one surface a pipe coupling member to which a pressure measurement air hose can be connected from outside the dust collector and having on the other surface a filter-equipped suction piping member, the inner plate facing a plate opening in the outer plate and fixed to the surface of the outer plate facing the dust collector, an opening is formed in the outer surface of the dust collector that leads to the interior of the dust collector, and the outer plate is fixed to the dust collector by fitting into the opening.

[0009] Furthermore, the mounting structure for pressure measurement piping in a dust collector is characterized in that a packing is sandwiched between the outer plate and the outer surface of the dust collector.

[0010] Furthermore, the mounting structure for pressure measurement piping in a dust collector is characterized in that the shape and dimensions of the opening leading to the inside of the dust collector are approximately the same as the shape and dimensions of the inner plate to the extent that they can be fitted together.

[0011] Furthermore, there is provided a mounting structure for pressure measurement piping in a dust collector having a dust collection chamber and a clean chamber, which comprises a plate fixed to an outer surface of the dust collector from outside by a fastening means, the plate having a protruding portion with a protruding surface on part of its surface facing the dust collector, the protruding surface being equipped with a filter-equipped suction piping member, and the surface opposite the protruding surface being equipped with a piping coupling member to which a pressure measurement air hose can be connected from outside the dust collector, an opening which leads to the interior of the dust collector is formed on the outer surface of the dust collector, and the plate is fixed to the dust collector by fitting the protruding portion into the opening.

[0012] Furthermore, the mounting structure for pressure measurement piping in a dust collector is characterized in that a packing is sandwiched between the plate and the outer surface of the dust collector.

[0013] Furthermore, the mounting structure for pressure measurement piping in a dust collector is characterized in that the shape and dimensions of the opening leading to the inside of the dust collector are approximately the same as the shape and dimensions of the protrusion to the extent that they can be fitted together. [Effects of the Invention]

[0014] According to the present invention, maintenance (cleaning and replacement) of filter-equipped suction piping members and the like installed in a dust collector can be performed by removing the plate member from the outside of the dust collector. Therefore, unlike conventional methods, it is not necessary to remove a bag filter from inside the dust collector and have workers enter the machine to perform dangerous and time-consuming maintenance work on unstable footing. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 2 is a perspective view of a dust collector according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded perspective view of a pressure measurement pipe section in an embodiment of the present invention. [Figure 3] FIG. 2 is a side view of a pressure measurement pipe section in one embodiment of the present invention. [Figure 4] FIG. 2 is a front view of a pressure measurement pipe section viewed from the outside of the dust collector in one embodiment of the present invention. [Figure 5] FIG. 2 is a side view of an outer plate and an inner plate in an embodiment of the present invention. [Figure 6] 10A and 10B are a side view and a front view of an outer plate and an inner plate from the outside of a dust collector in another embodiment of the present invention. [Figure 7] 10A and 10B are a side view and a front view, respectively, of a plate according to another embodiment of the present invention, taken from the outside of a dust collector. DETAILED DESCRIPTION OF THE INVENTION

[0016] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a pressure measurement pipe mounting structure for a dust collector according to the present invention will be described below with reference to the drawings. However, the present invention is not limited to the embodiment shown below.

[0017] FIG. 1 is a perspective view of a dust collector 1 in this embodiment. The dust collector 1 has a dust collection chamber 13 and a clean chamber 12, and is provided with a pressure measurement piping section 20 for detecting the differential pressure between the dust collection chamber 13 and the clean chamber 12 using a pressure sensor (not shown).

[0018] More specifically, the dust collector 1 itself is a known dust collector, in which dust-laden gas containing dust is taken into the dust collection chamber 13 through the dust-laden gas inlet 14 and passes through a bag filter (not shown) installed in the dust collection chamber 13. The dust-laden gas that has passed through the bag filter enters the clean chamber 12 and is discharged as clean gas from the clean gas outlet 11. Due to this gas flow, the dust contained in the dust-laden gas is filtered by the bag filter and collected on the outer surface of the bag filter.

[0019] Furthermore, since the dust collected by the bag filter needs to be brushed off as needed, the pressure values ​​of the dust collection chamber 13 and the clean chamber 12 are detected by the pressure sensor, and when the differential pressure (for example, pressure loss value) exceeds a preset threshold, control is performed to brush off the dust from the bag filter.

[0020] Therefore, in this embodiment, in order to measure the pressure inside the dust collector 1, a pressure measurement pipe section 20 is provided as shown in FIG.

[0021] FIG. 2 shows an exploded perspective view of the pressure measurement piping section 20 in this embodiment, FIG. 3 shows a side view of the pressure measurement piping section 20, FIG. 4 shows a front view of the pressure measurement piping section 20 from outside the dust collector 1, and FIG. 5 shows a side view of the outer plate 21 and the inner plate 22.

[0022] As shown in the figure, the mounting structure of the pressure measurement piping section 20 of this embodiment has an outer plate 21 that is fixed to the outer surface of the dust collector 1 from the outside of the dust collector 1 by fastening means (e.g., fixing bolts 17, nuts 18), and an inner plate 22 that has on one side a piping joint member (e.g., air hose joint 24, socket 25) to which a pressure measurement air hose can be connected from the outside of the dust collector 1 and on the other side a filtered suction piping member (e.g., 90° socket 26, filter 27), the inner plate 22 facing a plate opening 211 of the outer plate 21 and fixed to the surface of the outer plate 21 facing the dust collector 1, an opening 16 that leads to the inside of the dust collector 1 is formed on the outer surface of the dust collector 1, and the outer plate 21 is fixed to the dust collector 1 by fitting the inner plate 22 into the opening 16.

[0023] With the above-described mounting structure, maintenance (cleaning and replacement) of filter-equipped suction piping components and the like installed in the dust collector 1 can be performed by releasing the fastening means from the outside of the dust collector 1 and removing the outer plate 21.

[0024] More specifically, fixing bolts 17 and nuts 18 protruding from the outer surface of the dust collector 1, which serve as fastening means for the outer plate 21, make it possible to attach and detach the filter-equipped suction piping member (e.g., 90° socket 26, filter 27) together with the outer plate 21. This allows the filter 27 of the filter-equipped suction piping member to be easily cleaned or replaced from outside the dust collector 1.

[0025] In this embodiment, fixing bolts 17 and nuts 18 are used as fastening means for the outer plate 21, but this is not necessarily limited to such components, and any known fastening means that can firmly fix the outer plate 21 can be used.

[0026] 3, the filter 27 of the filter-equipped suction piping member is disposed facing downward via the 90° socket 26. This prevents dust from accumulating on the filter 27.

[0027] 5 and other figures, the inner plate 22 faces a plate opening 211 formed in the outer plate 21 and is fixed by welding to the surface of the outer plate 21 facing the dust collector 1. This two-plate structure simplifies the manufacturing process compared to cutting out a step from a single metal plate.

[0028] 2 and other figures, the present embodiment is configured such that a packing 23 is sandwiched between the outer plate 21 and the outer surface of the dust collector 1. This improves airtightness within the dust collector 1, and effectively prevents dust from leaking between the outer plate 21 and the outer surface of the dust collector 1, for example.

[0029] 3, in this embodiment, the shape and dimensions of the opening 16 leading to the inside of the dust collector 1 are configured to be substantially the same as those of the inner plate 22 to the extent that they can be fitted together. With this configuration, the gap between the outer periphery of the fitted inner plate 22 and the opening 16 can be reduced, further improving the airtightness of the inside of the dust collector 1.

[0030] In this embodiment, the inner plate 22 is a square of 50 mm x 50 mm, and the opening 16 leading to the inside of the dust collector 1 is also of approximately the same shape, but these shapes and dimensions are not necessarily limited to the above embodiment.

[0031] (Other variations) Although one embodiment of the pressure measurement pipe mounting structure in a dust collector according to the present invention has been described above, the present invention is not limited to the above embodiment and also includes the following.

[0032] For example, as shown in the side view of the outer plate 21 and the inner plate 22 in another embodiment of the present invention and the front view from outside the dust collector in Figure 6, the inner plate 22 may be made smaller, and the opening 16 leading to the interior of the dust collector 1 may also be made smaller.

[0033] In other words, if the filter-equipped suction piping components (e.g., 90° socket 26, filter 27) can be taken in and out through the opening 16 for maintenance, the manufacturing costs of each component can be reduced by making the opening 16 etc. as small as possible, and furthermore, the airtightness of the dust collector 1 can be improved.

[0034] Fig. 7 shows a side view and a front view from outside the dust collector of plate 21A in another embodiment of the present invention. The difference between the embodiment shown in Fig. 7 and the embodiment in which inner plate 22 is fixed to outer plate 21 is that the plate 21A is machined from a single metal plate with steps, but in other respects it is the same as the embodiment described above.

[0035] That is, the invention according to another embodiment provides an attachment structure for a pressure measurement piping section 20 in a dust collector 1 having a dust collection chamber 13 and a clean chamber 12, and includes a plate 21A fixed to the outer surface of the dust collector 1 from the outside by a fastening means, the plate 21A having a protruding portion 22A with a protruding surface 221A on a part of its surface facing the dust collector 1, the protruding surface 221A having a filter-equipped suction piping member, and the surface opposite the protruding surface 221A having a piping joint member to which a pressure measurement air hose can be connected from the outside of the dust collector 1, an opening 16 leading to the interior of the dust collector 1 is formed on the outer surface of the dust collector 1, and the protruding portion 22A is fitted into the opening 16 so that the plate 21A is fixed to the dust collector 1.

[0036] Also, in another embodiment, as in the above-described embodiment, the packing 23 may be sandwiched between the plate 21A and the outer surface of the dust collector 1. This can improve the airtightness of the inside of the dust collector 1, and can effectively prevent dust from leaking between the plate 21A and the outer surface of the dust collector 1, for example.

[0037] Furthermore, the shape and dimensions of opening 16 leading to the inside of dust collector 1 may be configured to be substantially the same as those of protrusion 22A to the extent that they can be fitted together. By configuring in this way, the gap between the outer periphery of protrusion 22A that is fitted into opening 16 can be reduced, and the airtightness of the inside of dust collector 1 can be further improved.

[0038] Although the embodiments and modifications of the present invention have been described above, the above-described embodiments of the invention are intended to facilitate understanding of the present invention and are not intended to limit the present invention. The present invention may be modified or improved without departing from the spirit thereof, and the present invention includes equivalents thereof. Furthermore, the components described in the claims and specification may be combined or omitted to the extent that at least part of the above-described problems can be solved or at least part of the effects can be achieved. [Explanation of symbols]

[0039] 1 dust collector 11 Clean gas outlet 12 Clean Room 13 Dust collection chamber 14 Dust-containing gas inlet 15 Work entrance / exit 16 Opening 17 Fixing bolt (fastening means) 18 Nut (fastening means) 20 Pressure measurement piping section 21 Outer plate 211 Plate opening 21A Plate 22 Inner plate 221 Through hole 22A Protrusion 221A Protruding surface 222A Plate Through Hole 23 Gasket 24 Air hose joint (piping joint component) 25 Socket (pipe joint component) 26 90° socket (filtered suction piping component) 27 Filter (filtered suction piping component)

Claims

1. In a dust collector having a dust collection chamber and a clean chamber, a pressure measurement pipe mounting structure is provided, an outer plate fixed to an outer surface of the dust collector from outside by a fastening means; an inner plate having a pipe joint member on one surface to which a pressure measuring air hose can be connected from the outside of the dust collector and a filter-equipped suction pipe member on the other surface, the inner plate faces the plate opening of the outer plate and is fixed to a surface of the outer plate facing the dust collector; An opening leading to the inside of the dust collector is formed on the outer surface of the dust collector, and the inner plate is fitted into the opening to fix the outer plate to the dust collector.

1. A pressure measurement pipe mounting structure for a dust collector.

2. A packing is sandwiched between the outer plate and the outer surface of the dust collector.

2. The pressure measuring pipe mounting structure for a dust collector according to claim 1.

3. The shape and dimensions of the opening leading to the inside of the dust collector are substantially the same as those of the inner plate to the extent that they can be fitted together.

3. The pressure measuring pipe mounting structure for a dust collector according to claim 1 or 2.

4. In a dust collector having a dust collection chamber and a clean chamber, a pressure measurement pipe mounting structure is provided, a plate fixed to an outer surface of the dust collector from outside the dust collector by a fastening means; The plate is a protruding portion having a protruding surface on a part of the surface facing the dust collector, a suction piping member with a filter on the protruding surface, and a piping joint member on the surface opposite to the protruding surface to which a pressure measuring air hose can be connected from the outside of the dust collector, An opening leading to the inside of the dust collector is formed on the outer surface of the dust collector, and the plate is fixed to the dust collector by fitting the protrusion into the opening.

1. A pressure measurement pipe mounting structure for a dust collector.

5. A packing is sandwiched between the plate and the outer surface of the dust collector.

5. The pressure measuring pipe mounting structure for a dust collector according to claim 4.

6. The shape and dimensions of the opening leading to the inside of the dust collector are substantially the same as the shape and dimensions of the protrusion to the extent that they can be fitted together.

6. The pressure measuring pipe mounting structure for a dust collector according to claim 4 or 5.

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