Cellulose ether dust recovery device

Abstract

The utility model relates to a cellulose ether dust recovery device, and belongs to the technical field of cellulose ether dust recovery treatment. Comprising a recycling barrel, an exhaust pipe, a gas collecting hood and an air inducing device. The gas collecting hood is arranged at the intersection of the feeding pipe and the stock bin in a covering manner, and the gas collecting hood is in through connection with the recycling barrel through the feeding pipe. A dust filtering device is arranged in the recycling barrel, an exhaust pipe communicated with the recycling barrel is arranged outside the recycling barrel, an air inducing device is arranged on the exhaust pipe, and the dust filtering device is located between the inlet pipe and the exhaust pipe. According to the utility model, the existing stock bin can be continued, and the dust collection bag is used for replacing a cyclone separator, so that the existing production line is convenient to transform, and the cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of cellulose ether dust recovery and treatment, and specifically relates to a cellulose ether dust recovery device. Background Art

[0002] When adding cellulose ether powder to the silo, dust is easily generated due to the splashing of the powder. The dust spreads into the air, which not only affects the factory environment, but also affects the health of employees.

[0003] In order to solve this problem, a Chinese patent disclosed on April 10, 2020, a silo dust collection device for cellulose ether with announcement number CN 210278668U, including a silo, a feed pipe is provided at the top of the silo, a top vacuum suction pipeline is provided on the upper part of the silo, the top vacuum suction pipeline is connected to the cyclone separator through a fan, the cyclone separator is also connected to the filter, and an exhaust gas treatment device is provided at the rear end of the filter; a collecting bucket is provided at the bottom of the cyclone separator, and the collecting bucket is connected to the silo through a return pipeline.

[0004] This patent solves the problem of filler dust, but it collects dust through a cyclone separator and requires the silo to be modified and a dust collection pipeline to be added inside the silo, which requires significant changes to the existing production line and is costly. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cellulose ether dust recovery device. The utility model can use the existing silo and replace the cyclone separator with a dust collecting bag, which is convenient for modifying the existing production line and reducing costs.

[0006] The technical solution adopted by the utility model to solve the problems existing in the prior art is:

[0007] A cellulose ether dust recovery device comprises a recovery cylinder, an air extraction pipe, an air collecting hood and an air inducing device.

[0008] The gas collecting hood is arranged at the intersection of the feed pipe and the silo, and the gas collecting hood is connected with the recovery cylinder through the feed pipe.

[0009] A dust filtering device is arranged inside the recovery tube, an exhaust pipe connected to the recovery tube is arranged outside the recovery tube, an air inducing device is arranged on the exhaust pipe, and the dust filtering device is located between the inlet pipe and the exhaust pipe.

[0010] Preferably, the dust filtering device is a dust bag, and the inlet and outlet ends of the inlet pipes are inserted into the dust bag.

[0011] Preferably, the dust collecting bag is arranged vertically, a discharge pipe is provided at the bottom of the dust collecting bag, the end of the discharge pipe is passed through to the outside of the cylinder, and a stop valve is provided on the discharge pipe.

[0012] Preferably, a cavity is concavely provided on the bottom surface of the gas collecting hood, the inlet pipe is connected through the cavity inside the gas collecting hood, and the bottom surface of the gas collecting hood abuts against the top surface of the silo.

[0013] Preferably, the cavity inside the gas collecting hood is an annular cavity, the gas collecting hood is sleeved on the feed pipe, and the gas collecting hood is fixedly connected to the feed pipe.

[0014] Preferably, a mounting flange is provided at the bottom of the gas collecting hood, and the mounting flange is fixedly connected to the silo.

[0015] Preferably, an air outlet pipe which is connected to the internal cavity of the air collecting hood is disposed outside the air collecting hood, the inner diameter of the air outlet pipe is smaller than the inner diameter of the inlet pipe, and the air outlet pipe is fixedly connected to the inlet pipe by a diameter change.

[0016] Preferably, the inner diameter of the air extraction pipe is larger than the inner diameter of the air inlet pipe.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) There is no need to modify the silo and feed pipe, so it can be directly applied to the existing production line, with little modification to the production line, which is easy to promote and apply.

[0019] (2) The recovery cylinder mainly includes the cylinder body and the dust bag inside. Compared with the cyclone separator, it is cheaper and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 This is a system diagram of a cellulose ether dust recovery device of the utility model.

[0022] Figure 2 This is a structural diagram of a recovery cylinder of a cellulose ether dust recovery device of the utility model.

[0023] Figure 3 for Figure 2 A cross-sectional view of

[0024] Figure 4 This is a structural diagram of the feed pipe in a cellulose ether dust recovery device of the utility model.

[0025] Figure 5 for Figure 4 Bottom view of

[0026] Figure 6 for Figure 4 A cross-sectional view of

[0027] Figure 7 for Figure 4 Bottom view of the central gas hood.

[0028] Figure 8 for Figure 4 The structural diagram of the middle dust cover keel.

[0029] Fig. 9 for Figure 4 The effect picture after the middle dust cover is opened.

[0030] Fig.10 for Fig. 9 Bottom view of the .

[0031] In the figure: 1-cylinder, 2-inlet pipe, 3-discharge pipe, 4-stop valve, 5-exhaust pipe, 6-dust bag, 7-feed pipe, 701-guide ring, 702-block, 8-air collecting hood, 801-mounting flange, 9-air outlet pipe, 10-reducing diameter, 11-fixing ring, 12-sliding rod, 13-crotch cloth, 14-pull rod, 15-silo, 16-draft induced device. DETAILED DESCRIPTION

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present application. The terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit the present application embodiments.

[0033] In addition, in the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Therefore, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0034] The following is a further detailed description of a cellulose ether dust recovery device of the present invention in conjunction with the accompanying drawings.

[0035] A cellulose ether dust recovery device comprises a recovery cylinder, an air extraction pipe 5, an air collecting hood 8 and an air inducing device 16.

[0036] The gas collecting hood 8 is arranged at the intersection of the feed pipe 7 and the silo 15 , and the gas collecting hood 8 is connected to the recovery cylinder through the feed pipe 2 .

[0037] A dust filtering device is provided inside the recovery tube, and an exhaust pipe 5 connected thereto is provided outside the recovery tube. An air inducing device 16 is provided on the exhaust pipe 5 . The dust filtering device is located between the inlet pipe 2 and the exhaust pipe 5 .

[0038] Because during the filling process, dust mainly leaks through the gap at the connection between the feed pipe 7 and the silo 15, so this place is the focus of treatment.

[0039] In this embodiment, a cavity is concavely formed on the bottom surface of the gas collecting hood 8 , the inlet pipe 2 is connected through the cavity inside the gas collecting hood 8 , and the bottom surface of the gas collecting hood 8 abuts against the top surface of the silo 15 .

[0040] Further, the cavity inside the gas collecting hood 8 is an annular cavity, the gas collecting hood 8 is sleeved on the feed pipe 7, and the gas collecting hood 8 is fixedly connected to the feed pipe 7. The bottom of the gas collecting hood 8 is provided with a mounting flange 801, and the mounting flange 801 is fixedly connected to the silo 15.

[0041] The air collecting hood 8 is sealed with the feed pipe 7 and the silo 15 by a sealing ring, and the air induction device 16 extracts the air inside the recovery cylinder to form a negative pressure inside the recovery cylinder, and the negative pressure is transmitted to the cavity inside the air collecting hood 8, which is located on the gap between the feed pipe 7 and the silo 15, thereby extracting the dust inside the silo 15. The extracted dust flows into the recovery cylinder through the inlet pipe 2, and then is filtered by the dust filtering device, and the dust-free air is discharged from the exhaust pipe 5.

[0042] The draft device 16 only needs to provide a slight negative pressure and does not need a large airflow. The advantage is that the power of the draft device 16 can be reduced, thereby reducing costs, and at the same time, it also avoids extracting the cellulose ether raw material in the silo 15 that is not in a splashing state.

[0043] In order to save costs while ensuring practical effects, the dust filtering device is a dust bag 6, and the outlet end of the inlet pipe 2 is inserted into the dust bag 6. The dust bag 6 is arranged vertically, and a discharge pipe 3 is provided at the bottom of the dust bag 6. The end of the discharge pipe 3 is passed through the outside of the cylinder 1, and a stop valve 4 is provided on the discharge pipe 3.

[0044] After a certain amount of cellulose ether powder is collected in the dust bag 6, the stop valve 4 is opened to discharge the powder for reuse.

[0045] The air collecting hood 8 is provided with an air outlet pipe 9 which is connected to the internal cavity thereof. The inner diameter of the air outlet pipe 9 is smaller than the inner diameter of the inlet pipe 2. The air outlet pipe 9 is fixedly connected to the inlet pipe 2 via a diameter reducer 10. The inner diameter of the air extraction pipe 5 is larger than the inner diameter of the inlet pipe 2. This arrangement can increase the flow rate of the air outlet pipe 9 and enhance the extraction effect.

[0046] In order to further prevent the raw materials discharged into the silo 15 by the feed pipe 7 from being directly drawn out, in the present embodiment, a guide ring 701 is protrudingly provided at the bottom of the circumferential surface of the feed pipe 7, and a clamping block 702 is protrudingly provided on the circumferential surface of the guide ring 701. The guide ring 701 and the clamping block 702 can pass through the feed port of the silo 15.

[0047] A plurality of blocks 702 are distributed in a circular array along the axis of the feed pipe 7, and a vertically arranged slide bar 12 is sleeved above the slide bar 12. The slide bar 12 is provided with a slide groove on the side facing the feed pipe 7, and the block 702 is slidably arranged inside the slide groove. The slide bar 12 is an elastic rod, and in a natural state, the bottom of the slide bar 12 is bent toward the side away from the feed pipe 7. A crotch cover 13 is provided between two adjacent slide bars 12, and a fixing ring 11 is fixed above all the slide bars 12. A pull rod 14 is provided on the fixing ring 11, and the top of the pull rod 14 passes through the air collecting hood 8 and is placed above the air collecting hood 8.

[0048] During the installation process, the pull rod 14 moves upward, the block 702 is clamped at the bottom of the slide rod 12, and the entire feed pipe 7 is attached. Figure 4 As shown, the slide bars 12 are arranged vertically and can pass through the feed opening of the silo 15.

[0049] After installation, push the pull rod 14 downward, the slide bar 12 moves downward, and its bottom is bent outward under the action of its own elastic force. All the slide bars 12 and the crotch cover 13 together form a trumpet mouth, and the end of the feed pipe 7 is covered inside. At this time, the state of the feed pipe 7 is changed from attached Fig. 9 And attached Fig.10 shown.

[0050] In this way, the negative pressure suction force felt by the cellulose ether raw material at the outlet of the feed pipe 7 is small, and the cellulose ether raw material will not be directly sucked into the gas collecting hood 8 .

[0051] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cellulose ether dust recovery device, characterized in that: It comprises a recovery cylinder, an air extraction pipe (5), an air collecting hood (8) and an air inducing device (16). The gas collecting hood (8) is arranged at the intersection of the feed pipe (7) and the silo (15), and the gas collecting hood (8) is connected to the recovery cylinder through the feed pipe (2). A dust filtering device is provided inside the recovery tube, an exhaust pipe (5) connected thereto is provided outside the recovery tube, an air induction device (16) is provided on the exhaust pipe (5), and the dust filtering device is located between the inlet pipe (2) and the exhaust pipe (5).

2. A cellulose ether dust recovery device according to claim 1, characterized in that: The dust filtering device is a dust collecting bag (6), and the outlet end of the inlet pipe (2) is inserted into the dust collecting bag (6).

3. A cellulose ether dust recovery device according to claim 2, characterized in that: The dust collecting bag (6) is arranged vertically, a discharge pipe (3) is provided at the bottom of the dust collecting bag (6), the end of the discharge pipe (3) is passed through the outside of the cylinder (1), and a stop valve (4) is provided on the discharge pipe (3).

4. A cellulose ether dust recovery device according to claim 1, 2 or 3, characterized in that: The bottom surface of the gas collecting hood (8) is concavely provided with a cavity, the inlet pipe (2) is connected to the cavity inside the gas collecting hood (8), and the bottom surface of the gas collecting hood (8) is in contact with the top surface of the silo (15).

5. A cellulose ether dust recovery device according to claim 4, characterized in that: The cavity inside the gas collecting hood (8) is an annular cavity. The gas collecting hood (8) is sleeved on the feed pipe (7), and the gas collecting hood (8) is fixedly connected to the feed pipe (7).

6. A cellulose ether dust recovery device according to claim 5, characterized in that: The bottom of the gas collecting hood (8) is provided with a mounting flange (801), and the mounting flange (801) is fixedly connected to the silo (15).

7. A cellulose ether dust recovery device according to claim 5 or 6, characterized in that: The air collecting hood (8) is provided with an air outlet pipe (9) on the outside thereof and is connected to the internal cavity thereof. The inner diameter of the air outlet pipe (9) is smaller than the inner diameter of the inlet pipe (2). The air outlet pipe (9) and the inlet pipe (2) are fixedly connected via a diameter reducer (10).

8. A cellulose ether dust recovery device according to claim 7, characterized in that: The inner diameter of the air extraction pipe (5) is greater than the inner diameter of the air inlet pipe (2).

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