Spherical ammonium perchlorate closed delivery device

Abstract

This invention discloses a closed conveying device for spherical ammonium perchlorate, relating to the field of ammonium perchlorate conveying equipment. It includes a first pneumatic conveying pipe, a second pneumatic conveying pipe, and a third pneumatic conveying pipe. The second pneumatic conveying pipe is curved, and a diversion pipe is provided on one side of the second pneumatic conveying pipe. When pneumatic gas and spherical ammonium perchlorate enter the second pneumatic conveying pipe from the first pneumatic conveying pipe, due to the parallel diversion pipe on one side of the second pneumatic conveying pipe, a portion of the pneumatic gas passes through the diversion pipe. The pneumatic gas in the diversion pipe is redirected and re-enters the second pneumatic conveying pipe, reducing the phenomenon of pneumatic gas driving spherical ammonium perchlorate to impact the inner wall of the second pneumatic conveying pipe, thereby reducing wear.

Description

Technical Field

[0001] This invention relates to the field of ammonium perchlorate conveying equipment, and particularly to a spherical enclosed ammonium perchlorate conveying device. Background Technology

[0002] Spherical ammonium perchlorate is usually transported using conveyor belts. During the transport process, the spherical ammonium perchlorate is first placed in a storage box, and then the storage box is placed on the conveyor belt for transport. Loading and unloading are required before and after transport; the transport efficiency is relatively low.

[0003] To improve the conveying efficiency of spherical ammonium perchlorate, pneumatic conveying technology from the existing technology was adopted. Spherical ammonium perchlorate is transported using pneumatic conveying pipelines, which can transport over long distances and eliminate the need for loading and unloading steps.

[0004] However, when using pneumatic conveying pipelines to transport spherical ammonium perchlorate, the pneumatic force causes the spherical ammonium perchlorate to move within the pipeline, resulting in impacts and abrasions to the inner wall of the pipeline. This causes severe wear and tear, especially when the spherical ammonium perchlorate is transported to a corner of the pipeline. When it is reversed during transport, it will impact the inner wall of the corner, causing severe wear and making leakage more likely.

[0005] Therefore, it is necessary to propose a spherical ammonium perchlorate closed conveying device to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a closed conveying device for spherical ammonium perchlorate to solve the problem that during the transmission of spherical ammonium perchlorate through pneumatic conveying pipelines, the spherical ammonium perchlorate moves within the pipeline due to pneumatic force, causing severe wear and tear on the inner wall of the pipeline. In particular, when the spherical ammonium perchlorate is conveyed to a corner of the pneumatic conveying pipeline, it impacts the inner wall of the corner during the reversal of the transmission, causing severe wear and leakage.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a spherical ammonium perchlorate closed conveying device, comprising a first pneumatic conveying pipe, a second pneumatic conveying pipe, and a third pneumatic conveying pipe. The second pneumatic conveying pipe is curved, and a diversion pipe is provided on one side of the second pneumatic conveying pipe. One end of the diversion pipe is connected to the side of the second pneumatic conveying pipe near the first pneumatic conveying pipe, and the other end of the diversion pipe is connected to the middle of the second pneumatic conveying pipe. The section of the diversion pipe connected to the second pneumatic conveying pipe faces the third pneumatic conveying pipe. Both ends of the diversion pipe are provided with perforated filter plates.

[0008] Both the first and third pneumatic conveying pipelines include an outer pipeline and an inner pipeline. The outer pipeline includes a first outer pipeline and a second outer pipeline, and the inner pipeline includes a first inner pipeline and a second inner pipeline. The first outer pipeline, the second outer pipeline, the first inner pipeline, and the second inner pipeline all have a semi-circular pipeline structure. The sides of the first inner pipeline and the second inner pipeline that are close to each other are respectively provided with a rectangular groove and a rectangular plate. The rectangular plate is movably inserted into the rectangular groove. The outer rings of the second inner pipeline and the first inner pipeline that are far from each other are fixedly welded with a first spring. The end of the first spring that is far from the inner pipeline is fixedly welded to the inner wall of the corresponding first outer pipeline or the inner wall of the second outer pipeline.

[0009] Preferably, the filter plate with mesh is movably disposed inside the diversion pipe. Limiting rings are provided on both sides of the filter plate with mesh. The limiting rings are fixedly welded to the inner wall of the diversion pipe. A second spring is fixedly welded to the side of the two limiting rings that are close to each other. The end of the second spring away from the limiting ring is fixedly welded to the surface of the filter plate with mesh.

[0010] Preferably, a multi-purpose pipe is provided on one side of the outer ring of the diversion pipe.

[0011] Preferably, a one-way sealing plate is provided in the diversion pipe. The middle part of the one-way sealing plate is rotatably connected to the inner wall of the diversion pipe via a hinge shaft. The one-way sealing plate is located above the multi-purpose pipe. A third spring is fixedly welded to the lower surface of the one-way sealing plate near the end of the multi-purpose pipe. The end of the third spring away from the one-way sealing plate is fixedly welded to the inner wall of the diversion pipe. An upper limit plate is movably attached to the upper surface of the one-way sealing plate away from the multi-purpose pipe. The upper limit plate is fixedly welded to the inner wall of the diversion pipe.

[0012] Preferably, a cylindrical valve body is provided at one end of the second pneumatic conveying pipe near the third pneumatic conveying pipe. A rubber piston is provided inside the cylindrical valve body. A threaded rod is fixedly provided at the upper end of the rubber piston. An annular upper cover plate is sleeved on the outer ring of the threaded rod. The annular upper cover plate and the threaded rod are connected by a threaded engagement. The annular upper cover plate is fixed to the upper opening of the cylindrical valve body by screws. A handwheel is fixedly provided at the upper end of the threaded rod. The bottom of the cylindrical valve body is connected to the interior of the second pneumatic conveying pipe.

[0013] Preferably, a pressure sensor is fixedly installed on the inner wall of the second pneumatic conveying pipe.

[0014] Preferably, a connecting plate is fixedly provided at one end of the first outer pipe and the second outer pipe that are close to each other, the corresponding connecting plates are fitted together, and the corresponding connecting plates are fixed together by screws.

[0015] Preferably, the ends of the first and second outer pipes are integrally provided with a fixing sleeve, which is movably sleeved on the outer ring of the corresponding first or second pneumatic conveying pipe, and the corresponding fixing sleeve is fixed to the outer ring of the first or second pneumatic conveying pipe by screws.

[0016] Preferably, a rubber sleeve is provided at the connection position between the second pneumatic conveying pipe, the first pneumatic conveying pipe and the inner pipe. The rubber sleeve has a tubular structure, with one end of the rubber sleeve fixedly connected to the corresponding second pneumatic conveying pipe or the first pneumatic conveying pipe, and the other end of the rubber sleeve fixedly connected to the outer ring of the inner pipe.

[0017] Preferably, the filter holes on the mesh filter plate at the lower end of the diversion pipe are smaller than the filter holes on the mesh filter plate at the upper end of the diversion pipe.

[0018] The technical effects and advantages of this invention are as follows:

[0019] 1. When the pneumatic gas and spherical ammonium perchlorate pass through the first pneumatic conveying pipe into the second pneumatic conveying pipe, because there is a parallel diversion pipe on one side of the second pneumatic conveying pipe, a portion of the pneumatic gas will pass through the diversion pipe. The pneumatic gas in the diversion pipe will be redirected and then re-enter the second pneumatic conveying pipe. This reduces the phenomenon of the pneumatic gas driving the spherical ammonium perchlorate to impact the inner wall of the second pneumatic conveying pipe, thereby reducing wear.

[0020] 2. Since the spherical ammonium perchlorate and the gas entering the second pneumatic conveying pipe from the first pneumatic conveying pipe are initially conveyed along the direction of the first pneumatic conveying pipe, the spherical ammonium perchlorate will continue to move along its original conveying direction in the second pneumatic conveying pipe due to inertia. However, the flow area in the second pneumatic conveying pipe becomes smaller due to the obstruction of the spherical ammonium perchlorate, and the gas will preferentially enter the diversion pipe. After being reversed in the diversion pipe, it will re-enter the second pneumatic conveying pipe. At this time, the gas entering the second pneumatic conveying pipe can be transmitted along the direction of the third pneumatic conveying pipe to continue conveying the spherical ammonium perchlorate. Therefore, in this invention, the design of the diversion pipe diverts a portion of the gas at the corner of the second pneumatic conveying pipe, thereby reducing the impact of the spherical ammonium perchlorate and the gas on the corner of the second pneumatic conveying pipe.

[0021] 3. To prevent spherical ammonia perchlorate from entering the distribution pipe, perforated filter plates are installed inside both ends of the distribution pipe. The perforated filter plates allow air to pass through, preventing spherical ammonia perchlorate from entering the interior of the distribution pipe.

[0022] 4. Since pneumatic power can pass through the diversion pipe, pneumatic power can also transport the perchloric acid powder and some dust contained in the spherical ammonia perchlorate to the diversion pipe. Some of the perchloric acid powder and dust are collected in the diversion pipe, thus achieving the purpose of dust removal from the spherical ammonia perchlorate.

[0023] 5. To prevent dust and ammonia perchlorate powder from clogging the perforated filter plate, the perforated filter plate is movably installed inside the diversion pipe. Limiting rings are installed on both sides of the perforated filter plate, and these rings are fixedly welded to the inner wall of the diversion pipe. A second spring is fixedly welded to the side of each limiting ring closest to it, and the end of the second spring furthest from the limiting ring is fixedly welded to the surface of the perforated filter plate. When air passes through the perforated filter plate, the air pressure fluctuates within a certain range, causing the perforated filter plate to vibrate between the two limiting rings. This prevents dust and ammonia perchlorate powder from adhering to the perforated filter plate, thus avoiding clogging.

[0024] 6. When it is necessary to clean the dust and perchloric acid powder collected inside the diversion pipe, operate the handwheel to turn the threaded rod so that the annular upper cover plate is lowered to the position of sealing in the second pneumatic conveying pipe. A multi-purpose pipe is set on one side of the outer ring of the diversion pipe. At this time, a collection box is connected to the multi-purpose pipe. Pneumatic force can blow the dust and perchloric acid powder collected in the diversion pipe into the collection box for collection.

[0025] 7. The multi-purpose pipeline can also supplement the diversion pipeline with air to make up for the loss of air after the diversion pipeline. A pressure sensor is fixedly installed on the inner wall of the second air delivery pipeline. The pressure sensor can monitor the strength of the air after the diversion pipeline. If air needs to be supplemented, it can be supplemented from the multi-purpose pipeline. It is highly practical.

[0026] 8. When pneumatically conveying spherical ammonium perchlorate, the pneumatic force and the spherical ammonium perchlorate push the inner wall of the inner pipe, causing the second inner pipe and the first inner pipe to expand and contract accordingly. The second inner pipe and the first inner pipe compress the first spring to form a buffer, reducing the wear of the pneumatic force and the spherical ammonium perchlorate on the inner wall of the inner pipe, thus increasing the service life of the first pneumatic conveying pipe and the third pneumatic conveying pipe.

[0027] 9. The rubber sleeve can deform elastically, which serves to seal the connection between the second pneumatic conveying pipe, the first pneumatic conveying pipe and the inner pipe. The rubber sleeve does not affect the expansion and contraction of the second inner pipe and the first inner pipe in the inner pipe. When the second pneumatic conveying pipe is damaged, it can be replaced separately. It is convenient, practical and has low operating cost. The rubber sleeve can be glued to the inner pipe. Attached Figure Description

[0028] Figure 1This is a schematic diagram of the spherical ammonium perchlorate enclosed conveying device of the present invention from one perspective.

[0029] Figure 2 This is a cross-sectional view of the spherical ammonium perchlorate enclosed conveying device of the present invention.

[0030] Figure 3 For the present invention Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0031] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B.

[0032] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C.

[0033] Figure 6 For the present invention Figure 2 Enlarged schematic diagram of the structure at point D.

[0034] Figure 7 This is a schematic diagram of the spherical ammonium perchlorate enclosed conveying device of the present invention from another perspective.

[0035] In the diagram: 1. First pneumatic conveying pipe; 2. Second pneumatic conveying pipe; 3. Third pneumatic conveying pipe; 4. Diversion pipe; 5. Multi-purpose pipe; 6. Cylindrical valve body; 601. Handwheel; 602. Threaded rod; 603. Annular upper cover plate; 604. Rubber piston; 7. Pressure sensor; 801. First outer pipe; 802. Second outer pipe; 803. First inner pipe; 804. Second inner pipe; 805. Rectangular groove; 806. Rectangular plate; 807. Connecting plate; 808. Fixing sleeve; 9. Rubber sleeve; 10. Filter plate with mesh; 101. Limiting ring; 102. Second spring; 11. One-way sealing plate; 111. Hinge shaft; 112. Third spring; 113. Upper limit plate; 108. First spring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] This invention addresses the problem of severe wear and tear on the inner wall of pneumatic conveying pipelines during the transport of spherical ammonium perchlorate. This wear is particularly pronounced at pipeline bends, where the ammonium impacts the inner wall during reversal, leading to leakage. The invention provides a solution as follows: Figures 1-7 The spherical ammonium perchlorate closed conveying device shown includes a first pneumatic conveying pipe 1, a second pneumatic conveying pipe 2, and a third pneumatic conveying pipe 3. These pipes are used to convey spherical ammonium perchlorate. Pneumatic power is connected to the end of the first pneumatic conveying pipe 1 furthest from the second pneumatic conveying pipe 2, allowing the spherical ammonium perchlorate to be conveyed pneumatically. The second pneumatic conveying pipe 2 is curved, and a diversion pipe 4 is provided on one side of it. One end of the diversion pipe 4 is connected to the side of the second pneumatic conveying pipe 2 near the first pneumatic conveying pipe 1. The other end of 4 is connected to the middle of the second pneumatic conveying pipe 2, and the branch pipe 4 is connected to a section of the second pneumatic conveying pipe 2 facing the third pneumatic conveying pipe 3. When the pneumatic force and spherical ammonium perchlorate enter the second pneumatic conveying pipe 2 from the first pneumatic conveying pipe 1, since the second pneumatic conveying pipe 2 is provided with parallel branch pipes 4 on one side, a part of the pneumatic force will pass through the branch pipes 4. The pneumatic force in the branch pipes 4 changes direction in the branch pipes 4 and re-enters the second pneumatic conveying pipe 2, which reduces the phenomenon of the pneumatic force driving the spherical ammonium perchlorate to impact the inner wall of the second pneumatic conveying pipe 2, thereby reducing wear.

[0038] The specific principle of pneumatic entry into the diversion pipe 4 is as follows:

[0039] Since the spherical ammonium perchlorate and the air entering the second pneumatic conveying pipe 2 from the first pneumatic conveying pipe 1 are initially conveyed along the direction of the first pneumatic conveying pipe 1, the spherical ammonium perchlorate will continue to move in the second pneumatic conveying pipe 2 along its original conveying direction due to inertia. However, the flow area in the second pneumatic conveying pipe 2 becomes smaller due to the obstruction of the spherical ammonium perchlorate, and the air will preferentially enter the diversion pipe 4. After being diverted in the diversion pipe 4, it will re-enter the second pneumatic conveying pipe 2. At this time, the air entering the second pneumatic conveying pipe 2 can be transmitted along the direction of the third pneumatic conveying pipe 3 to continue conveying the spherical ammonium perchlorate. Therefore, in this invention, the design of the diversion pipe 4 diverts a portion of the air at the corner of the second pneumatic conveying pipe 2, thereby reducing the impact of the spherical ammonium perchlorate and the air at the corner of the second pneumatic conveying pipe 2.

[0040] To prevent spherical ammonia perchlorate from entering the diversion pipe 4, perforated filter plates 10 are installed inside both ends of the diversion pipe 4. The perforated filter plates 10 allow air to pass through, thus preventing spherical ammonia perchlorate from entering the interior of the diversion pipe 4.

[0041] Furthermore, since the pneumatic force can pass through the diversion pipe 4, the pneumatic force can also transport the perchlorate powder and some dust contained in the spherical perchlorate to the diversion pipe 4. Some of the perchlorate powder and dust are collected in the diversion pipe 4, thus achieving the purpose of dust removal from the spherical perchlorate.

[0042] It should be noted that when collecting ammonium perchlorate powder and dust in the diversion pipe 4, the filter holes on the lower mesh filter plate 10 are smaller than those on the upper mesh filter plate 10. Alternatively, a cotton filter layer can be attached to the surface of the lower mesh filter plate 10 so that the ammonium perchlorate powder and dust are collected inside the diversion pipe 4 after passing through the upper mesh filter plate 10.

[0043] To prevent dust and ammonia perchlorate powder from clogging the perforated filter plate 10, the perforated filter plate 10 is movably installed inside the diversion pipe 4. Limiting rings 101 are provided on both sides of the perforated filter plate 10, and the limiting rings 101 are fixedly welded to the inner wall of the diversion pipe 4. A second spring 102 is fixedly welded to the side of each limiting ring 101 that is close to the other. The end of the second spring 102 away from the limiting ring 101 is fixedly welded to the surface of the perforated filter plate 10. When air passes through the perforated filter plate 10, the air pressure fluctuates within a certain range, causing the perforated filter plate 10 to vibrate between the two limiting rings 101. This prevents dust and ammonia perchlorate powder from adhering to the perforated filter plate 10, thus avoiding clogging.

[0044] Considering that dust and ammonia perchlorate powder can be collected in the diversion pipe 4, a cylindrical valve body 6 is provided at one end of the second pneumatic conveying pipe 2 near the third pneumatic conveying pipe 3. A rubber piston 604 is installed inside the cylindrical valve body 6, and a threaded rod 602 is fixedly installed at the upper end of the rubber piston 604. An annular upper cover plate 603 is fitted around the outer ring of the threaded rod 602. The annular upper cover plate 603 and the threaded rod 602 are connected by a threaded engagement. The annular upper cover plate 603 is fixed to the upper opening of the cylindrical valve body 6 by screws. A handwheel 601 is fixedly installed at the upper end of 02. The bottom of the cylindrical valve body 6 is connected to the interior of the second pneumatic conveying pipe 2. When it is necessary to clean the dust and perchloric acid powder collected inside the diversion pipe 4, the handwheel 601 is operated to rotate the threaded rod 602, so that the annular upper cover plate 603 is lowered to the position of sealing in the second pneumatic conveying pipe 2. A multi-purpose pipe 5 is provided on one side of the outer ring of the diversion pipe 4. At this time, a collection box is connected to the multi-purpose pipe 5. Pneumatic force can blow the dust and perchloric acid powder collected in the diversion pipe 4 into the collection box for collection.

[0045] A one-way sealing plate 11 is installed in the diversion pipe 4. The middle part of the one-way sealing plate 11 is rotatably connected to the inner wall of the diversion pipe 4 via a hinge shaft 111. The one-way sealing plate 11 is located above the multi-purpose pipe 5. A third spring 112 is fixedly welded to the lower surface of the one-way sealing plate 11 near the end of the multi-purpose pipe 5. The end of the third spring 112 away from the one-way sealing plate 11 is fixedly welded to the inner wall of the diversion pipe 4. An upper limit plate 113 is movably attached to the upper surface of the one-way sealing plate 11 away from the multi-purpose pipe 5. The upper limit plate 113 is fixedly welded to the inner wall of the diversion pipe 4. When a force pushes the one-way sealing plate 11 from above, the one-way sealing plate 11... The one-way sealing plate 11 opens and closes downwards with the hinge shaft 111 as the axis, allowing pneumatic force to enter the lower part of the one-way sealing plate 11 in one direction. When the pneumatic force at the lower end of the one-way sealing plate 11 pushes the one-way sealing plate 11, the pneumatic force backflow from the multi-purpose pipe 5 will first blow to the lower part of the one-way sealing plate 11 away from the multi-purpose pipe 5. Therefore, the upper limit plate 113 will block the one-way sealing plate 11 from opening and closing upwards, thus achieving the purpose of avoiding pneumatic backflow. This ensures that when the pneumatic force blows into the diversion pipe 4, the dust and perchloric acid ammonia powder in the diversion pipe 4 can be blown into the multi-purpose pipe 5. In this invention, other one-way valves in the prior art can also be installed in the diversion pipe 4 to achieve this purpose, which will not be elaborated here.

[0046] Furthermore, the multi-purpose pipe 5 can also supplement the air supply to the diversion pipe 4 to compensate for the air loss after the air is diverted through the diversion pipe 4. A pressure sensor 7 is fixedly installed on the inner wall of the second air supply pipe 2. The pressure sensor 7 can monitor the strength of the air after the diversion through the diversion pipe 4. If air needs to be supplemented, it can be supplemented from the multi-purpose pipe 5. It is highly practical. The air supply can be supplemented by using common pneumatic equipment that can be detachably connected to the multi-purpose pipe 5. This will not be elaborated here.

[0047] Considering that the pneumatic conveying process of spherical ammonium perchlorate will cause severe wear to the inner walls of the first pneumatic conveying pipe 1 and the third pneumatic conveying pipe 3, the first pneumatic conveying pipe 1 and the third pneumatic conveying pipe 3 are configured to each include an outer pipe and an inner pipe. The outer pipe includes a first outer pipe 801 and a second outer pipe 802, and the inner pipe includes a first inner pipe 803 and a second inner pipe 804. The first outer pipe 801, the second outer pipe 802, the first inner pipe 803, and the second inner pipe 804 are all in a semi-annular pipe structure. The sides of the first inner pipe 803 and the second inner pipe 804 that are close to each other are respectively provided with a rectangular groove 805 and a rectangular plate 806. The rectangular plate 806 is movably inserted into the rectangular groove 805. In the tank 805, a first spring 108 is fixedly welded to the outer ring of the second inner pipe 804 and the first inner pipe 803, which are far apart from each other. The end of the first spring 108 away from the inner pipe is fixedly welded to the inner wall of the corresponding first outer pipe 801 or the inner wall of the second outer pipe 802. When the spherical ammonium perchlorate is pneumatically conveyed, the pneumatic force and the spherical ammonium perchlorate push the inner wall of the inner pipe, which will cause the second inner pipe 804 and the first inner pipe 803 to expand and contract accordingly. The second inner pipe 804 and the first inner pipe 803 compress the first spring 108 to form a buffer, reducing the wear of the pneumatic force and the spherical ammonium perchlorate on the inner wall of the inner pipe, thereby increasing the service life of the first pneumatic conveying pipe 1 and the third pneumatic conveying pipe 3.

[0048] It should be noted that the length of the rectangular plate 806 that can extend and retract in the rectangular groove 805 is greater than the length that the first spring 108 can be compressed, so that the inner pipe remains in a state of not leaking spherical ammonium perchlorate. The purpose of buffering the gas transmission of spherical ammonium perchlorate is achieved by using the extendable first inner pipe 803 and the second inner pipe 804, thus protecting the inner wall of the inner pipe.

[0049] A connecting plate 807 is fixedly installed at one end of the first outer pipe 801 and the second outer pipe 802 that are close to each other. The corresponding connecting plates 807 fit together and are fixed to each other by screws. A fixing sleeve 808 is integrally provided at the end of the first outer pipe 801 and the second outer pipe 802. The fixing sleeve 808 is movably sleeved on the outer ring of the corresponding first pneumatic conveying pipe 1 or second pneumatic conveying pipe 2. The corresponding fixing sleeve 808 is fixed to the outer ring of the first pneumatic conveying pipe 1 or second pneumatic conveying pipe 2 by screws. The first outer pipe 801 and the second outer pipe 802 can be disassembled and installed, which is convenient for the group leader and maintenance, and easy to use.

[0050] Rubber sleeves 9 are installed at the connection points of the second pneumatic conveying pipe 2, the first pneumatic conveying pipe 1, and the inner pipe. The rubber sleeves 9 have a tubular structure. One end of the rubber sleeve 9 is fixedly connected to the corresponding second pneumatic conveying pipe 2 or first pneumatic conveying pipe 1, and the other end is fixedly connected to the outer ring of the inner pipe. The rubber sleeves 9 can be elastically deformed, which serves to seal the connection points of the second pneumatic conveying pipe 2, the first pneumatic conveying pipe 1, and the inner pipe. The rubber sleeves 9 do not affect the expansion and contraction of the second inner pipe 804 and the first inner pipe 803 in the inner pipe. When the second pneumatic conveying pipe 2 is damaged, it can be replaced separately. It is convenient, practical, and has low operating costs. The rubber sleeves 9 can be glued to the inner pipe.

Claims

1. A spherical ammonium perchlorate closed conveying device, comprising a first pneumatic conveying pipe (1), a second pneumatic conveying pipe (2), and a third pneumatic conveying pipe (3), characterized in that: The second pneumatic conveying pipe (2) is bent. A diversion pipe (4) is provided on one side of the second pneumatic conveying pipe (2). One end of the diversion pipe (4) is connected to the side of the second pneumatic conveying pipe (2) near the first pneumatic conveying pipe (1). The other end of the diversion pipe (4) is connected to the middle of the second pneumatic conveying pipe (2). The section of the diversion pipe (4) connected to the second pneumatic conveying pipe (2) is directed toward the third pneumatic conveying pipe (3). Both ends of the diversion pipe (4) are provided with mesh filter plates (10). Both the first pneumatic conveying pipeline (1) and the third pneumatic conveying pipeline (3) include an outer pipeline and an inner pipeline. The outer pipeline includes a first outer pipeline (801) and a second outer pipeline (802). The inner pipeline includes a first inner pipeline (803) and a second inner pipeline (804). The first outer pipeline (801), the second outer pipeline (802), the first inner pipeline (803), and the second inner pipeline (804) are all in a semi-circular pipeline structure. The sides of the first inner pipeline (803) and the second inner pipeline (804) that are close to each other are respectively provided with a rectangular groove (805) and a rectangular plate (806). The rectangular plate (806) is movably inserted into the rectangular groove (805). The outer rings of the second inner pipeline (804) and the first inner pipeline (803) that are far away from each other are fixedly welded with a first spring (108). The end of the first spring (108) that is far away from the inner pipeline is fixedly welded to the inner wall of the corresponding first outer pipeline (801) or the inner wall of the second outer pipeline (802). The perforated filter plate (10) is movably disposed inside the diversion pipe (4). Limiting rings (101) are provided on both sides of the perforated filter plate (10). The limiting rings (101) are fixedly welded to the inner wall of the diversion pipe (4). A second spring (102) is fixedly welded to the side of the two limiting rings (101) that are close to each other. The end of the second spring (102) away from the limiting ring (101) is fixedly welded to the surface of the perforated filter plate (10).

2. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: A multi-purpose pipe (5) is provided on one side of the outer ring of the diversion pipe (4).

3. The spherical ammonium perchlorate enclosed conveying device according to claim 2, characterized in that: A one-way sealing plate (11) is provided in the diversion pipe (4). The middle part of the one-way sealing plate (11) is rotatably connected to the inner wall of the diversion pipe (4) through a hinge shaft (111). The one-way sealing plate (11) is located above the multi-purpose pipe (5). A third spring (112) is fixedly welded to the lower surface of the one-way sealing plate (11) near the end of the multi-purpose pipe (5). The end of the third spring (112) away from the one-way sealing plate (11) is fixedly welded to the inner wall of the diversion pipe (4). An upper limit plate (113) is movably attached to the upper surface of the one-way sealing plate (11) away from the multi-purpose pipe (5). The upper limit plate (113) is fixedly welded to the inner wall of the diversion pipe (4).

4. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: A cylindrical valve body (6) is provided at one end of the second pneumatic conveying pipe (2) near the third pneumatic conveying pipe (3). A rubber piston (604) is provided inside the cylindrical valve body (6). A threaded rod (602) is fixedly provided at the upper end of the rubber piston (604). An annular upper cover plate (603) is sleeved on the outer ring of the threaded rod (602). The annular upper cover plate (603) and the threaded rod (602) are connected by a threaded engagement. The annular upper cover plate (603) is fixed to the upper opening of the cylindrical valve body (6) by screws. A handwheel (601) is fixedly provided at the upper end of the threaded rod (602). The bottom of the cylindrical valve body (6) is connected to the interior of the second pneumatic conveying pipe (2).

5. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: A pressure sensor (7) is fixedly installed on the inner wall of the second pneumatic conveying pipe (2).

6. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: The first outer pipe (801) and the second outer pipe (802) are each fixedly provided with a connecting plate (807) at their respective ends that are close to each other. The corresponding connecting plates (807) are fitted together and fixed together by screws.

7. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: The ends of the first outer pipe (801) and the second outer pipe (802) are integrally provided with a fixed sleeve (808). The fixed sleeve (808) is movably sleeved on the outer ring of the corresponding first pneumatic conveying pipe (1) or second pneumatic conveying pipe (2). The corresponding fixed sleeve (808) is fixed to the outer ring of the first pneumatic conveying pipe (1) or second pneumatic conveying pipe (2) by screws.

8. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: Rubber sleeves (9) are provided at the connection points between the second pneumatic conveying pipe (2), the first pneumatic conveying pipe (1) and the inner pipe. The rubber sleeves (9) are tubular structures. One end of the rubber sleeves (9) is fixedly connected to the corresponding second pneumatic conveying pipe (2) or first pneumatic conveying pipe (1), and the other end of the rubber sleeves (9) is fixedly connected to the outer ring of the inner pipe.

9. The spherical ammonium perchlorate enclosed conveying device according to claim 1, characterized in that: The filter holes on the mesh filter plate (10) at the lower end of the diversion pipe (4) are smaller than the filter holes on the mesh filter plate (10) at the upper end of the diversion pipe (4).

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