Powder recovery device

Abstract

The utility model provides a powder recovery device. The powder recovery device comprises a rotary valve (1), a powder recovery pipe (2) and a first powder conveying pipe (3), a packing gland (4) is arranged on the rotary valve (1), one end of the powder recovery pipe (2) is installed below the packing gland (4), and the other end of the powder recovery pipe (2) is communicated with the first powder conveying pipe (3). According to the powder recovery device, fine powder leaked from the filler gland (4) is recovered, and the replacement frequency of the filler is reduced, so that the production continuity is ensured, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of powder material recovery, and particularly to a powder recovery device. Background Technique

[0002] The rotary valve is an efficient and reliable fluid control device, which is widely used in various chemical process flows. By precisely controlling the flow direction and velocity of the fluid, the rotary valve can realize the functions of discharging, metering, and dust removal during the transportation of powder particle materials, thus ensuring the stability and safety of the chemical production process. Therefore, the rotary valve plays a crucial role in chemical production.

[0003] At present, the rotary valve usually relies on a packing seal structure to avoid the leakage of the internally transported materials. However, the sealing ability of the packing seal structure is limited, and powder still leaks from the packing at both sides of the rotary valve when transporting fine powder particle materials. It is necessary to frequently stop the machine to replace the packing for sealing to ensure that the fine powder materials will not leak. Due to the need to frequently stop the machine to replace the packing for the existing rotary valve, the existing rotary valve has the problems of large packing consumption, discontinuous production, and thus high production costs. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a powder recovery device, which recovers the fine powder materials leaked from the packing seal of the rotary valve, reduces the replacement frequency of the packing, thus ensuring the continuity of production and reducing the production cost.

[0005] To achieve the above purpose, according to one aspect of the utility model, a powder recovery device is provided, which includes a rotary valve, a powder recovery pipe, and a first powder delivery pipe. A packing gland is arranged on the rotary valve. One end of the powder recovery pipe is installed below the packing gland, and the other end is communicated with the first powder delivery pipe.

[0006] Further, the powder recovery pipe includes a first powder collection pipe and a second powder delivery pipe. The first powder collection pipe is provided with collection holes, which are arranged below the packing gland and face the packing gland. The end of the first powder collection pipe away from the collection holes is communicated with the second powder delivery pipe.

[0007] Further, the end of the second powder delivery pipe away from the first powder collection pipe is detachably connected to the first powder delivery pipe.

[0008] Further, there are two packing glands, which are sleeved on both ends of the rotating shaft of the rotary valve. First powder collection pipes are arranged below both packing glands, and the two first powder collection pipes are communicated with the second powder delivery pipe.

[0009] Further, the two first powder collection pipes form a series pipeline, and the second powder conveying pipe is communicated with the series pipeline.

[0010] Further, a three-way joint is arranged at one end of the second powder conveying pipe close to the first powder collection pipe, one ends of the two first powder collection pipes are arranged on the three-way joint, and the two first powder collection pipes are connected in parallel through the three-way joint and communicated with the second powder conveying pipe.

[0011] Further, the first powder collection pipe includes a collection section and a conveying section. The collection section is a square pipe, and the collection section is connected to the second powder conveying pipe through the conveying section.

[0012] Further, the powder recovery device further includes a filtration and recovery mechanism, and the filtration and recovery mechanism is arranged on the first powder conveying pipe.

[0013] Further, the filtration and recovery mechanism includes a powder filter, a valve and a first bin. The powder filter is arranged on the first powder conveying pipe, the discharge port of the powder filter is communicated with the first bin through a pipeline, and the valve is arranged on the pipeline.

[0014] Further, the powder recovery device further includes a fan, and the fan is arranged at one end of the first powder conveying pipe far from the powder recovery pipe; and / or, the powder recovery device further includes a second bin, the second bin is communicated with the first powder conveying pipe through a pipeline, and a rotary valve is arranged on the pipeline.

[0015] Applying the technical solution of the present invention, the rotary valve is used to convey the powder material into the first powder conveying pipe. A packing gland is arranged on the rotary valve, and the packing gland is used to compress the packing to improve the sealing performance of the rotary valve. One end of the powder recovery pipe is installed below the packing gland to recover the fine powder leaked from the packing gland, and the other end is communicated with the first powder conveying pipe, so as to transfer the powder recovered into the powder recovery pipe into the first powder conveying pipe. By arranging the powder recovery pipe, the fine powder leaked from the packing gland is recovered back into the system for storage, overcoming the problem that the existing rotary valve needs to stop frequently to replace the packing to reduce leakage, thereby ensuring continuous production and reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figure 1 The pipeline structure diagram of the powder recovery device according to the embodiment of the present invention is shown;

[0018] Figure 2The schematic diagram of the pipeline structure of the powder recovery pipe of the powder recovery device according to the embodiment of the present utility model is shown;

[0019] Figure 3 The top view of the powder recovery pipe of the powder recovery device according to the embodiment of the present utility model is shown; and

[0020] Figure 4 The schematic diagram of the pipeline structure of the powder recovery pipe of the powder recovery device according to the embodiment of the present utility model is shown.

[0021] Among them, the above-mentioned drawings include the following reference numerals:

[0022] 1, rotary valve; 2, powder recovery pipe; 21, first powder collection pipe; 211, collection section; 212, conveying section; 22, second powder conveying pipe; 3, first powder conveying pipe; 4, packing gland; 5, tee joint; 6, powder filter; 7, valve; 8, first bin; 9, fan; 10, second bin; 11, collection hole. Detailed implementation manners

[0023] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0024] As Figures 1 to 4 shown, according to the embodiment of the present utility model, the powder recovery device includes a rotary valve 1, a powder recovery pipe 2 and a first powder conveying pipe 3. A packing gland 4 is provided on the rotary valve 1. One end of the powder recovery pipe 2 is installed below the packing gland 4, and the other end is communicated with the first powder conveying pipe 3.

[0025] In the above technical solution, the rotary valve 1 is used to convey the powder material into the first powder conveying pipe 3. A packing gland 4 is provided on the rotary valve 1. The packing gland 4 is used to compress the packing to improve the sealing performance of the rotary valve 1. One end of the powder recovery pipe 2 is installed below the packing gland 4 to recover the fine powder leaked from the packing gland 4, and the other end is communicated with the first powder conveying pipe 3, so as to convey the powder recovered into the powder recovery pipe 2 into the first powder conveying pipe 3. By providing the powder recovery pipe 2, the fine powder leaked from the packing gland 4 is recovered back into the system for storage, overcoming the problem that the existing rotary valve 1 needs to frequently stop the machine to replace the packing to reduce leakage, thereby ensuring continuous production and reducing the production cost.

[0026] In one embodiment, the powder recovery pipe 2 includes a first powder collection pipe 21 and a second powder delivery pipe 22. A collection hole 11 is formed in the first powder collection pipe 21. The collection hole 11 is disposed below the packing gland 4 and faces the packing gland 4. One end of the first powder collection pipe 21 away from the collection hole 11 communicates with the second powder delivery pipe 22.

[0027] In the above technical solution, after the fine powder leaks out from the packing gland 4, the collection hole 11 disposed below the packing gland 4 collects the fine powder into the first powder collection pipe 21, and then the collected fine powder is transferred to the first powder delivery pipe 3 through the second powder delivery pipe 22.

[0028] In one embodiment, one end of the second powder delivery pipe 22 away from the first powder collection pipe 21 is detachably connected to the first powder delivery pipe 3.

[0029] In the above technical solution, a detachable connection such as a snap connection or a threaded connection is adopted between the second powder delivery pipe 22 and the first powder delivery pipe 3, which facilitates the disassembly, maintenance or replacement of the second powder delivery pipe 22.

[0030] In one embodiment, there are two packing glands 4. The two packing glands 4 are sleeved on both ends of the rotating shaft of the rotary valve 1. The first powder collection pipes 21 are disposed below the two packing glands 4, and the two first powder collection pipes 21 communicate with the second powder delivery pipe 22.

[0031] In the above technical solution, the packing gland 4 mainly cooperates with the packing to seal the gap between the rotating shaft and the bearing of the rotary valve 1 to prevent the material in the rotary valve 1 from leaking from the gap. Both ends of the rotating shaft of the rotary valve 1 extend to the outside of the rotary valve 1, resulting in a risk of fine powder leakage at both ends of the rotating shaft. In order to minimize the leakage of fine powder from both ends of the rotating shaft, packing glands 4 are provided at both ends of the rotating shaft of the rotary valve 1; in order to recover the fine powder leaked from the two packing glands 4, first powder collection pipes 21 are provided below the two packing glands 4, and the two first powder collection pipes 21 communicate with the second powder delivery pipe 22 to convey the fine powder to the next link through the second powder delivery pipe 22.

[0032] In one embodiment, the two first powder collection pipes 21 form a series pipeline, and the second powder delivery pipe 22 communicates with the series pipeline.

[0033] In the above technical solution, by forming the two first powder collection pipes 21 into a series pipeline to recover the fine powder leaked from the two packing glands 4, the pipeline complexity is reduced compared with a parallel pipeline, and the use of pipeline components such as three-way joints is reduced, thereby reducing the production cost.

[0034] In one embodiment, a tee joint 5 is provided at one end of the second powder delivery pipe 22 close to the first powder collection pipe 21. One ends of two first powder collection pipes 21 are arranged on the tee joint 5, and the two first powder collection pipes 21 are connected in parallel through the tee joint 5 and communicate with the second powder delivery pipe 22.

[0035] In the above technical solution, the two first powder collection pipes 21 are connected in parallel through the tee joint 5 to recover the fine powder leaked from the two packing glands 4. Compared with the series pipeline, the two first powder collection pipes 21 in the parallel pipeline can maintain the same negative pressure environment, so that the collection holes 11 provided on the two first powder collection pipes 21 have the same absorption capacity, thereby ensuring a better absorption effect on the fine leaked powder.

[0036] In one embodiment, the first powder collection pipe 21 includes a collection section 211 and a delivery section 212. The collection section 211 is a square pipe, and the collection section 211 is connected to the second powder delivery pipe 22 through the delivery section 212.

[0037] In the above technical solution, the collection section 211 is arranged below the packing gland 4. The collection section 211 is a square pipe, and the collection holes 11 provided on the square pipe have a larger collection area than the collection holes 11 on the round pipe, thereby improving the collection effect of the leaked powder. After the collection section 211 collects the leaked fine powder into the square pipe, the powder is transported to the second powder delivery pipe 22 through the delivery section 212.

[0038] In one embodiment, the powder recovery device further includes a filtration and recovery mechanism, and the filtration and recovery mechanism is arranged on the first powder delivery pipe 3.

[0039] In the above technical solution, the filtration and recovery mechanism filters out the powder in the first powder delivery pipe 3 and then recovers it.

[0040] In one embodiment, the filtration and recovery mechanism includes a powder filter 6, a valve 7 and a first bin 8. The powder filter 6 is arranged on the first powder delivery pipe 3. The discharge port of the powder filter 6 is communicated with the first bin 8 through a pipeline, and the valve 7 is arranged on the pipeline.

[0041] In the above technical solution, the powder filter 6 is arranged on the first powder delivery pipe 3. The air carrying the powder enters the powder filter 6 from the first powder delivery pipe 3. The powder is filtered out of the air through the filtering device in the powder filter 6, and then the air is discharged into the first powder delivery pipe 3. The filtered powder enters the first bin 8 through the valve 7 for storage. The valve 7 is used to control the powder transportation and plays a role in blocking the powder filter 6 and the first bin 8 to prevent the powder stored in the first bin 8 from being sucked back into the powder filter 6 under the action of air pressure.

[0042] In one embodiment, the valve 7 is a flap valve, which has the characteristics of simple structure and good sealing performance, and can be quickly opened and closed.

[0043] In one embodiment, the powder recovery device further includes a fan 9, and the fan 9 is arranged at one end of the first powder conveying pipe 3 away from the powder recovery pipe 2; and / or, the powder recovery device further includes a second bin 10, and the second bin 10 is communicated with the first powder conveying pipe 3 through a pipeline, and a rotary valve 1 is arranged on the pipeline.

[0044] In the above technical solution, the fan 9 forms a negative pressure in the pipeline by pumping air, drives the powder to move in the pipeline, thereby realizing powder transportation, and discharges the filtered clean air out of the pipeline; the second bin 10 is used to store the powder materials to be used.

[0045] The working process of the powder recovery device of the present utility model is as follows: the powder material in the second bin 10 enters the first powder conveying pipe 3 through the rotary valve 1. In this process, fine powder will leak from the packing gland 4 at the end of the rotary valve 1 to the outside. The first powder collecting pipe 21 arranged below the packing gland 4 collects the leaked fine powder into the first powder collecting pipe 21, and then transports the powder to the first powder conveying pipe 3 through the second powder conveying pipe 22. The powder is transported in the first powder conveying pipe 3 along with the air flow to the powder filter 6. The powder filter 6 filters out the powder in the air and stores the powder in the first bin 8. The filtered clean air is discharged under the action of the fan 9.

[0046] It can be seen from the above description that the above embodiments of the present utility model achieve the following technical effects: the rotary valve 1 is used to transport the powder material into the first powder conveying pipe 3. A packing gland 4 is arranged on the rotary valve 1, and the packing gland 4 is used to compress the packing to improve the sealing performance of the rotary valve 1. One end of the powder recovery pipe 2 is installed below the packing gland 4 to recover the fine powder leaked from the packing gland 4, and the other end is communicated with the first powder conveying pipe 3, so as to transport the powder recovered into the powder recovery pipe 2 into the first powder conveying pipe 3. By arranging the powder recovery pipe 2, the fine powder leaked from the packing gland 4 is recycled into the system for storage, which overcomes the problem that the existing rotary valve 1 needs to stop frequently to replace the packing to reduce leakage, thereby ensuring continuous production and reducing production costs.

[0047] Obviously, the above-described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0048] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular forms are also intended to include the plural forms. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A powder recovery device, characterized in that, It includes a rotary valve (1), a powder recovery pipe (2) and a first powder conveying pipe (3). A packing gland (4) is provided on the rotary valve (1). One end of the powder recovery pipe (2) is installed below the packing gland (4), and the other end is communicated with the first powder conveying pipe (3).

2. The powder recovery device according to claim 1, wherein The powder recovery pipe (2) includes a first powder collection pipe (21) and a second powder conveying pipe (22). A collection hole (11) is formed in the first powder collection pipe (21). The collection hole (11) is arranged below the packing gland (4) and faces the packing gland (4). One end of the first powder collection pipe (21) away from the collection hole (11) is communicated with the second powder conveying pipe (22).

3. The powder recovery device according to claim 2, characterized in that One end of the second powder conveying pipe (22) away from the first powder collection pipe (21) is detachably connected to the first powder conveying pipe (3).

4. The powder recovery device according to claim 2, characterized in that, There are two packing glands (4). The two packing glands (4) are sleeved on both ends of the rotating shaft of the rotary valve (1). The first powder collection pipes (21) are arranged below the two packing glands (4), and the two first powder collection pipes (21) are communicated with the second powder conveying pipe (22).

5. The powder recovery device according to claim 4, characterized in that, The two first powder collection pipes (21) form a series pipeline, and the second powder conveying pipe (22) is communicated with the series pipeline.

6. The powder recovery device according to claim 4, wherein One end of the second powder conveying pipe (22) close to the first powder collection pipe (21) is provided with a three-way joint (5). One ends of the two first powder collection pipes (21) are arranged on the three-way joint (5). The two first powder collection pipes (21) are connected in parallel through the three-way joint (5) and are communicated with the second powder conveying pipe (22).

7. The powder recovery device according to claim 4, characterized in that, The first powder collection pipe (21) includes a collection section (211) and a conveying section (212). The collection section (211) is a square pipe, and the collection section (211) is connected to the second powder conveying pipe (22) through the conveying section (212).

8. The powder recovery device according to any one of claims 1 to 7, characterized in that, The powder recovery device further includes a filtering and recovery mechanism, and the filtering and recovery mechanism is arranged on the first powder conveying pipe (3).

9. The powder recovery device according to claim 8, wherein The filtering and recovery mechanism includes a powder filter (6), a valve (7) and a first bin (8). The powder filter (6) is arranged on the first powder conveying pipe (3). The discharge port of the powder filter (6) is communicated with the first bin (8) through a pipeline, and the valve (7) is arranged on the pipeline.

10. The powder recovery device according to claim 1, characterized in that, The powder recovery device further includes a fan (9), and the fan (9) is arranged at one end of the first powder conveying pipe (3) away from the powder recovery pipe (2); and / or, the powder recovery device further includes a second bin (10), and the second bin (10) is communicated with the first powder conveying pipe (3) through a pipeline, and the rotary valve (1) is arranged on the pipeline.

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