Workshop conveyor and control method thereof

Abstract

The application discloses a workshop conveying device and a control method thereof, and relates to the technical field of pneumatic pipeline conveyors. The workshop conveying device comprises a main-path pneumatic conveying system, a control system and a plurality of branch-path pneumatic conveying systems. The branch-path pneumatic conveying systems each comprise a branch pneumatic pipeline and a branch-path air blower. The branch pneumatic pipeline is connected with a machining device generating fine chips. The branch-path air blower is connected with the branch pneumatic pipeline. The main-path pneumatic conveying system comprises a main pneumatic pipeline, a main-path air blower and a plurality of connecting valves. The main pneumatic pipeline is connected with the plurality of branch-path pneumatic conveying systems through the connecting valves. The main-path air blower is connected with the main pneumatic pipeline. The control system is connected with the connecting valves and is used for controlling the plurality of connecting valves to sequentially convey the fine chips to the main pneumatic pipeline, and at most one branch pneumatic pipeline in the same time conveys the fine chips into the main pneumatic pipeline through the connecting valve. The workshop conveying device is beneficial to solving the technical problem of low efficiency of metal fine chip recycling and conveying.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pneumatic pipeline conveyor, in particular to a workshop conveying device and a control method thereof. BACKGROUND

[0002] In the process of preparing metal products, the raw materials generally need to be cut and / or polished. A large amount of metal fines will be generated in the cutting or polishing process of metal materials. The metal fines are bulk materials mixed with metal particles and metal powder. In the related art, the metal fines are mainly sucked into the pneumatic pipeline by the suction force generated by the pneumatic conveying fan, and the metal fines are conveyed along the pneumatic pipeline to the cyclone tower and the spray tower for fine separation to realize metal fine recycling.

[0003] In the prior art, the cutting and polishing equipment of the processing plant is generally distributed at different positions and different floors of the workshop. Therefore, the metal fines generated by each cutting equipment need to be conveyed to the fine recycling and processing equipment through the pneumatic pipeline conveyor to realize fine recycling and processing. However, for some enterprises with a large number of cutting and polishing equipment, in order to adapt to the product preparation process, the cutting and polishing equipment is often distributed at different positions in the workshop. In the production process, the speed of fine generated by a single cutting equipment or a single polishing equipment is much smaller than the rated speed of the pneumatic pipeline conveyor for conveying metal fines, thereby resulting in low conveying efficiency of the pneumatic pipeline conveyor. SUMMARY

[0004] The present application discloses a workshop conveying device and a control method thereof to solve the technical problem of low metal fine recycling and conveying efficiency.

[0005] To solve the above problems, the present application adopts the following technical solutions:

[0006] The workshop conveying device provided by the present application can generate airflow in the pipeline through the fan, and can convey metal fines and similar bulk materials in the pipeline through the airflow. Specifically, the workshop conveying device comprises a main pneumatic conveying system, a control system and a plurality of branch pneumatic conveying systems. The branch pneumatic conveying system comprises a branch pneumatic pipeline and a branch fan. The branch pneumatic pipeline is connected to the processing equipment generating the fine. The branch fan is connected to the branch pneumatic pipeline and is used to drive the fine along the branch pneumatic pipeline. The main pneumatic conveying system comprises a main pneumatic pipeline, a main fan and a plurality of connection valves. The main pneumatic pipeline is connected to the plurality of branch pneumatic conveying systems through the connection valves. The main fan is connected to the main pneumatic pipeline and is used to drive the fine along the main pneumatic pipeline to the fine processing equipment. The control system is connected to the connection valves and is used to control the plurality of connection valves to convey the fine to the main pneumatic pipeline in turn, and at most one branch pneumatic pipeline in the same time instant enters the main pneumatic pipeline through the connection valve.

[0007] In some embodiments, the connection valve comprises a valve body, a first valve plate and a second valve plate. The valve body has a vertically arranged conveying passage. The main pneumatic pipe has a horizontally arranged first pipe. The valve body has a first side and a second side along the conveying direction of the first pipe. The first side is adjacent to the upstream end of the first pipe relative to the second side. The first valve plate and the second valve plate are sequentially and spacedly arranged along the conveying direction of the conveying passage. The first valve plate is rotationally connected to the second side of the valve body. The second valve plate is rotationally connected to the first side of the valve body.

[0008] In some embodiments, the first valve plate is inclined upward along the conveying direction of the first pipe when the first valve plate is in the closed state.

[0009] In some embodiments, the second valve plate extends along the conveying direction of the first pipe when the second valve plate is in the closed state.

[0010] In some embodiments, the second valve plate is inclined downward along the conveying direction of the first pipe and at least partially extends into the first pipe adjacent to one side of the second side of the valve body when the second valve plate is in the open state.

[0011] In some embodiments, the connection valve further comprises a first driving member. The first driving member is connected to the first valve plate and is used to drive the first valve plate to open or close.

[0012] In some embodiments, the connection valve further comprises a second driving member. The second driving member is connected to the second valve plate and is used to drive the second valve plate to open or close.

[0013] In some embodiments, the second valve plate has a plurality of material leakage gaps on one side adjacent to the second side of the valve body. The material leakage gaps are spacedly arranged, and the distance between two material leakage gaps is greater than the width of the material leakage gap.

[0014] In some embodiments, a temporary storage hopper is arranged in the valve body, the temporary storage hopper is located between the first valve plate and the second valve plate, and the temporary storage hopper has a metal lip and a sealing lip on one end adjacent to the second valve plate. The metal lip is arranged in the sealing lip, and a heat insulation cavity is formed between the metal lip and the sealing lip. When the second valve plate is in the closed state, the metal lip abuts against the surface of the second valve plate, and the sealing lip is sealingly fitted with the surface of the second valve plate.

[0015] In some embodiments, the sidewall adjacent to the first side of the valve body is a first sidewall, and the first sidewall is inclined downward along the conveying direction of the first pipe.

[0016] In some embodiments, the first pipeline has a make-up section at an end away from the main line fan. The make-up section has a make-up opening, and the first pipeline is in communication with the atmosphere through the make-up opening. The inner wall of the make-up section has a guide plate, which is helically arranged along the inner wall of the make-up section, and the width of the guide plate is less than the radius of the main pneumatic pipeline.

[0017] In some embodiments, the helix angle of the guide plate is less than or equal to 30°.

[0018] In some embodiments, the main pneumatic pipeline has a second pipeline and an arc-shaped pipeline. The second pipeline is vertically arranged, the first end of the arc-shaped pipeline is smoothly connected to the first pipeline, and the second end of the arc-shaped pipeline is smoothly connected to the second pipeline. The inner diameter of the arc-shaped pipeline gradually decreases from the first end to the second end of the arc-shaped pipeline.

[0019] In some embodiments, the branch pneumatic conveying system further comprises a secondary cyclone tower and a secondary spray tower. The first gas inlet of the secondary cyclone tower is connected to the fine dust generating processing equipment through the branch pneumatic pipeline. The first gas outlet of the secondary cyclone tower is connected to the branch fan through the secondary spray tower. The first dust discharge port of the secondary cyclone tower is connected to the main pneumatic pipeline through the connection valve. The secondary spray tower is used to clean the gas discharged from the secondary cyclone tower.

[0020] In some embodiments, the main line pneumatic conveying system further comprises a main cyclone tower and a main spray tower. The second gas inlet of the main cyclone tower is connected to the plurality of branch pneumatic conveying systems through the main pneumatic pipeline and the connection valve, respectively. The second gas outlet of the main cyclone tower is connected to the main line fan through the main spray tower. The second dust discharge port of the main cyclone tower is connected to the feed inlet of the fine dust treatment equipment. The main spray tower is used to clean the gas discharged from the main cyclone tower.

[0021] In some embodiments, the control system is connected to the fine dust generating processing equipment. The control system is used to start the branch pneumatic conveying system when any one of the processing equipment connected to the branch pneumatic conveying system is started. The control system is also used to shut down the branch pneumatic conveying system after all the processing equipment connected to the branch pneumatic conveying system are shut down for a first preset time length.

[0022] The technical scheme of the workshop conveying device provided by the present application can achieve the following beneficial effects:

[0023] The workshop conveying device provided by the application can be applied to a workshop in which a large number of machining devices generating fine dust are arranged. Specifically, the workshop conveying device has two-stage pneumatic conveying pipelines, and the two-stage pneumatic conveying pipelines are respectively provided with independent pneumatic fans. In this way, each independent branch pneumatic conveying system is provided with a corresponding fan to provide power, so that the airflow in the pneumatic pipeline connected with each machining device can maintain a high flow rate. This scheme is beneficial to prevent the power generated by the pneumatic fan from being dispersed due to too many branches, and is further beneficial to maintain the flow rate of the airflow at each position in the conveying pipeline, so as to facilitate the conveying of fine dust in the pipeline along with the airflow and improve the conveying efficiency of fine dust. In addition, the main pneumatic conveying system is connected with a plurality of branch pneumatic conveying systems, which is beneficial to increase the proportion of fine dust conveyed by the main conveying pipeline, that is, the main conveying pipeline carries more fine dust per unit volume of gas, thereby improving the conveying efficiency of the main pneumatic conveying system for conveying metal fine dust.

[0024] The control method of the workshop conveying device provided by the application can be applied to the workshop conveying device provided by the application.

[0025] The control method of the workshop conveying device provided by some embodiments comprises the following steps.

[0026] Obtaining the working state of the machining device connected with the branch pneumatic conveying system in the workshop;

[0027] When any one of the machining devices connected with the branch pneumatic conveying system is started, the branch pneumatic conveying system is started;

[0028] After all the machining devices connected with the branch pneumatic conveying system are stopped for a preset time length, the branch pneumatic conveying system is stopped.

[0029] The control method of the workshop conveying device provided by some embodiments further comprises the following steps.

[0030] The two connection valves connected with the started branch pneumatic conveying system are controlled to convey fine dust to the main pneumatic pipeline in sequence, and the time interval for conveying fine dust to the main pneumatic pipeline by the two connection valves is a second preset time length.

[0031] The control method of the workshop conveying device provided by the application is not only beneficial to improve the conveying efficiency of metal fine dust, but also can adaptively adjust the working state of the branch pneumatic conveying system according to the working state of the machining device in the workshop, thereby reducing the energy consumption of the workshop conveying device. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0033] Figure 1 is a perspective view of a workshop conveying device provided by some embodiments of the present application;

[0034] Figure 2 is a front view of a workshop conveying device provided by some embodiments of the present application;

[0035] Figure 3 is a schematic view of a branch pneumatic conveying system connected with a main pneumatic pipeline provided by some embodiments of the present application;

[0036] Figure 4 is a schematic view of a branch pneumatic conveying system connected with a processing device provided by some embodiments of the present application; Figure 1 ;

[0037] Figure 5 is a schematic view of a branch pneumatic conveying system connected with a processing device provided by some embodiments of the present application; Figure 2 ;

[0038] Figure 6 is an enlarged schematic view of A in Figure 1 ;

[0039] Figure 7 is a perspective view of a connecting valve provided by some embodiments of the present application;

[0040] Figure 8 is a schematic view of a connecting valve provided by some embodiments of the present application, in which a first valve plate and a second valve plate are both closed;

[0041] Figure 9 is a schematic view of a connecting valve provided by some embodiments of the present application, in which a first valve plate is opened and a second valve plate is closed;

[0042] Figure 10 is a schematic view of a connecting valve provided by some embodiments of the present application, in which a first valve plate is closed and a second valve plate is opened;

[0043] Figure 11 is a schematic view of a connecting valve provided by some embodiments of the present application, in which a second valve plate is connected with a second driving member;

[0044] Figure 12 is a schematic view of a make-up air section provided by some embodiments of the present application;

[0045] Figure 13is a schematic diagram of a secondary cyclone tower provided by some embodiments of the present application;

[0046] Figure 14 is a schematic diagram of a primary cyclone tower provided by some embodiments of the present application.

[0047] Legend:

[0048] 10 - processing equipment; 20 - treatment equipment; 100 - branch pneumatic conveying system; 110 - branch pneumatic pipeline; 120 - branch fan; 130 - secondary cyclone tower; 131 - first air inlet; 132 - first air outlet; 133 - first chip outlet; 140 - secondary spray tower; 200 - main pneumatic conveying system; 210 - main pneumatic pipeline; 211 - first pipeline; 2111 - air supplement section; 2112 - air supplement opening; 2113 - guide plate; 212 - second pipeline; 213 - arc-shaped pipeline; 220 - main fan; 230 - connecting valve; 231 - valve body; 2311 - conveying channel; 232 - first valve plate; 2321 - first rotating shaft; 233 - second valve plate; 2331 - material leakage gap; 2332 - second rotating shaft; 234 - first driving member; 235 - second driving member; 236 - temporary storage hopper; 2361 - metal lip; 2362 - sealing lip; 2363 - heat insulation cavity; 240 - primary cyclone tower; 241 - first sub-tower; 242 - second sub-tower; 243 - material discharging machine; 244 - second air inlet; 245 - second air outlet; 246 - second chip outlet; 250 - primary spray tower. DETAILED DESCRIPTION

[0049] In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions of the present application will be described in detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0050] The terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally of a kind, and are not limited to the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / ", generally represents that the front and rear associated objects are in an "or" relationship.

[0051] The metal fines belong to the bulk material mixed with metal particles and metal powder. In the related art, the metal fines are mainly sucked into the pneumatic pipeline by the suction force generated by the pneumatic conveying fan, and the metal fines are conveyed along the pneumatic pipeline to the cyclone tower and the spray tower for the separation of the fines, so as to realize the recycling of the metal fines. However, in the case that the number of cutting and grinding equipment is large, the suction force generated by the pneumatic fan will be dispersed by the numerous branch pipelines, thereby causing the suction force of each branch to be small. In addition, the metal fines are directly sucked from the processing equipment, and the proportion of the fines in the mixture of the fines and the gas in the pipeline is small, that is, the metal fines carried by the unit volume of the gas is small, thereby causing the conveying efficiency of the pneumatic conveyor to be low.

[0052] The workshop conveying device provided by the present application adopts two-stage conveying. Specifically, the first-stage branch pneumatic pipeline adopts a plurality of branch pneumatic conveying systems, and each branch pneumatic conveying system is configured with an independent branch fan. This is beneficial to avoid the suction force generated by the fan being excessively dispersed, and to improve the efficiency of conveying the fines by each branch pipeline. In addition, each branch pneumatic conveying system conveys the collected fines to the second-stage main pneumatic conveying system. Specifically, each branch pneumatic conveying system conveys the collected fines to the main pneumatic pipeline of the main pneumatic conveying system. In this way, in the main pneumatic pipeline, the unit volume of the gas carries more fines, thereby being beneficial to improve the conveying efficiency of the pneumatic conveyor. Moreover, the two-stage transmission mode for conveying the fines is also beneficial to avoid the power generated by the main fan of the main pneumatic conveying system being dispersed, thereby being beneficial to conveying the fines over a long distance and at a high gradient, and improving the conveying efficiency of the workshop conveying device for conveying the fines.

[0053] The workshop conveying device and the control method thereof provided by the embodiments of the present application will be described in detail below by combining the accompanying drawings Figures 1 to 14 with specific embodiments and application scenarios.

[0054] The workshop conveying device provided by the present application can convey the bulk material by airflow. For example, the workshop conveying device can convey the metal fines generated in the workshop by airflow, for the recycling of the metal fines.

[0055] Reference is made to Figure 1 , Figure 4 and Figure 5The workshop conveying device provided in the application comprises a main route pneumatic conveying system 200 and a plurality of branch route pneumatic conveying systems 100. The plurality of branch route pneumatic conveying systems 100 are distributed in different areas of the workshop, and are used to suck and collect metal fine chips generated in the corresponding areas of the workshop and drive the metal fine chips to be conveyed along the pneumatic pipelines to the main route pneumatic conveying system 200 by air flow. The main route pneumatic conveying system 200 is connected with the plurality of branch route pneumatic conveying systems 100 respectively, and is used to convey the metal fine chips collected by each branch route pneumatic conveying system 100 to a fine chip processing device 20 by air flow conveying. For example, the fine chip processing device 20 can be but is not limited to a cake press. Specifically, the fine chip processing device 20 can be used to press bulk fine chip materials into blocks.

[0056] With reference to Figure 3 Each of the branch route pneumatic conveying systems 100 comprises a branch pneumatic pipeline 110 and a branch route blower 120. The branch pneumatic pipeline 110 is connected with a fine chip generating machining device 10. For example, the fine chip generating machining device 10 can be but is not limited to a metal cutting device or a metal polishing device. The branch route blower 120 is connected with the branch pneumatic pipeline 110, and is used to drive the fine chips to be conveyed along the branch pneumatic pipeline 110. Specifically, the branch route blower 120 generates air flow in the branch pneumatic pipeline 110 connected therewith, and drives the fine chips to be conveyed along the branch pneumatic pipeline 110 by the air flow.

[0057] With reference to Figure 1 The main route pneumatic conveying system 200 comprises a main pneumatic pipeline 210, a main route blower 220 and a plurality of connection valves 230. The main pneumatic pipeline 210 is connected with the plurality of branch route pneumatic conveying systems 100 through the connection valves 230. The main route blower 220 is connected with the main pneumatic pipeline 210, and is used to drive the fine chips to be conveyed along the main pneumatic pipeline 210 to the fine chip processing device 20. The fine chip processing device 20 can be a fine chip cake press, which is used to prepare the fine chips into metal blocks by extrusion.

[0058] In the above embodiment, the branch route pneumatic conveying systems 100 all convey the collected fine chips to the main pneumatic pipeline 210 of the main route pneumatic conveying system 200. In this way, the unit volume of gas carries more fine chips in the main pneumatic pipeline 210, which is beneficial to improve the conveying efficiency of the pneumatic conveying machine.

[0059] In some embodiments, the branch route blowers 120 and the main route blower 220 can all be special blowers for pneumatic pipeline conveying. Specifically, the type or power of the branch route blower 120 can be determined according to the number of machining devices 10 connected with the branch pneumatic pipeline 110 and the pipe diameter and length of the branch pneumatic pipeline 110. Of course, the type or power of the main route blower 220 can also be determined according to the number of branch pneumatic pipelines 110 connected with the main pneumatic pipeline 210, the pipe diameter and length of the main pneumatic pipeline 210.

[0060] In some embodiments, the branch pneumatic pipeline 110 has two suction ports with a diameter of 125 mm, one suction port with a diameter of 150 mm, and three suction ports with a diameter of 200 mm, each of which corresponds to one processing equipment 10. In order to better transport the metal fines, the air speed of the branch pneumatic pipeline 110 is not less than 35 m / s. To this end, the branch air blower 120 can use a blower with a power of 37 kw. Due to the difference in the connected processing equipment 10, the size of the corresponding suction port is also different. The number and type of corresponding processing equipment 10 in different functional areas in the workshop are also different, so the application does not describe the number, size of the suction port in each branch pneumatic conveying system 100 and the rated power of the branch air blower 120.

[0061] In some embodiments, the control system is connected with the connecting valve 230. Specifically, the control system can be used to control the plurality of connecting valves 230 to sequentially transport the fines to the main pneumatic pipeline 210. In some embodiments, the connecting valve 230 is a normally closed valve. Specifically, in the case where the fines collected and transported by the branch pneumatic conveying system 100 need to be transported into the main pneumatic pipeline 210, the connecting valve 230 will be opened under the control of the control system. This is beneficial to prevent the air flow in the branch pneumatic conveying system 100 from intermingling with the air flow in the main pneumatic conveying system 200, thereby benefiting to maintain the flow rate of the air flow in the branch pneumatic conveying system 100 and the main pneumatic conveying system 200, and improving the efficiency of fine conveying.

[0062] In some embodiments, at most one branch pneumatic pipeline 110 transports the fines into the main pneumatic pipeline 210 through the connecting valve 230 at the same time. This is beneficial to prevent the air flow in part of the main pneumatic pipeline 210 from being dispersed, and improve the stability of the capacity of the main pneumatic conveying system 200 to transport the fines. In addition, this embodiment can also avoid the back and forth flow of the fines between the branch pneumatic conveying system 100 and the main pneumatic conveying system 200, and is beneficial to improve the efficiency of fine conveying.

[0063] Referring to Figure 2 , Figure 6 and Figure 8 , the connecting valve 230 comprises a valve body 231, a first valve plate 232 and a second valve plate 233. The valve body 231 has a vertically arranged conveying passage 2311. The main pneumatic pipeline 210 has a horizontally arranged first pipeline 211. Along the conveying direction of the first pipeline 211, the valve body 231 has a first side and a second side, and the first side is adjacent to the upstream end of the first pipeline 211 relative to the second side. For example, the conveying direction of the first pipeline 211 can be the direction indicated by the arrow F1 in Figure 6 . Specifically, the gas or fines passing through the first pipeline 211 is conveyed from the upstream end of the first pipeline 211 to the downstream end of the first pipeline 211.

[0064] Referring toFigure 7 and Figure 8 ,in Figure 8 The direction indicated by the red arrow is the gas transport direction within the first pipe 211, i.e., the transport direction of the first pipe 211. The first valve plate 232 and the second valve plate 233 are sequentially and alternately arranged on the valve body 231 along the transport direction of the transport channel 2311. The transport direction of the transport channel 2311 is... Figure 8 The direction indicated by the middle arrow F2. Specifically, the first valve plate 232 is adjacent to the upstream end of the conveying channel 2311, and the second valve plate 233 is adjacent to the downstream end of the conveying channel 2311. The first valve plate 232 is rotatably connected to the second side of the valve body 231. The second valve plate 233 is rotatably connected to the first side of the valve body 231. For example, refer to... Figure 7 The first valve plate 232 has a first rotating shaft 2321. Specifically, the first valve plate 232 is rotatably engaged with the valve body 231 via the first rotating shaft 2321, so that the first valve plate 232 rotates relative to the valve body 231 about the first rotating shaft 2321, thereby switching the first valve plate 232 between open and closed states. The second valve plate 233 has a second rotating shaft 2332. Specifically, the second valve plate 233 is rotatably engaged with the valve body 231 via the second rotating shaft 2332, so that the second valve plate 233 rotates relative to the valve body 231 about the second rotating shaft 2332, thereby switching the second valve plate 233 between open and closed states.

[0065] Figures 8 to 10 This is a schematic diagram showing the falling of fine debris during the process of conveying fine debris from the connecting valve 230 into the first pipe 211. (Refer to...) Figures 8 to 10 In the above embodiment, the first valve plate 232 and the second valve plate 233 are rotatably connected to opposite sides of the valve body 231, and the side of the second valve plate 233 rotatably connected to the valve body 231 is closer to the upstream end of the first pipe 211 than the side of the first valve plate 232 rotatably connected to the valve body 231. Thus, when the first valve plate 232 is open, fine debris is more concentrated on the side of the second valve plate 233 rotatably connected to the valve body 231. When the first valve plate 232 is closed, opening the second valve plate 233 allows fine debris to slide down along it. This helps prevent a large amount of fine debris from rapidly entering the first pipe 211. Therefore, this design allows fine debris to enter the first pipe 211 more evenly and dispersedly, which is beneficial for the airflow in the first pipe 211 to carry the fine debris along the pipe, and helps prevent a large amount of fine debris from accumulating near the connecting valve 230 in the first pipe 211.

[0066] It should be noted that the fine powder collected and transported by the branch pneumatic conveying system 100 is intermittently transported into the first pipeline 211, which is beneficial to prevent the airflow in the branch pneumatic conveying system 100 from interfering with the airflow in the main pneumatic conveying system 200, and avoid the fine powder repeatedly transported between the branch pneumatic pipeline 110 and the main pneumatic pipeline 210 due to airflow interference. The above embodiment solves the technical problem that the single-transported fine powder is too large to easily gather in the first pipeline 211 during the process of the branch pneumatic conveying system 100 intermittently transporting fine powder to the main pneumatic conveying system 200, and is beneficial to prevent the first pipeline 211 from being blocked.

[0067] With reference to Figure 8 In the case where the first valve plate 232 is in the closed state, the first valve plate 232 is inclined upward along the conveying direction of the first pipeline 211. This is beneficial to the fine powder being concentrated on the first side of the valve body 231, and further beneficial to the fine powder being quickly discharged when the first valve plate 232 is opened. This embodiment is beneficial to shorten the opening time of the first valve plate 232 during the process of discharging fine powder, and is beneficial to maintaining the stability of the airflow in the branch pneumatic conveying system 100. In addition, in the case where the first valve plate 232 is in the closed state, the first valve plate 232 is inclined upward along the conveying direction of the first pipeline 211, which is also beneficial to the fine powder being more concentrated on the second valve plate 233 adjacent to the first side of the valve body 231 when the fine powder is transported to the second valve plate 233, so as to facilitate the fine powder entering the first pipeline 211 uniformly and dispersedly.

[0068] With reference to Figure 8 And Figure 9 In the case where the second valve plate 233 is in the closed state, the second valve plate 233 extends along the conveying direction of the first pipeline 211. Specifically, the second valve plate 233 is in a horizontal state. With reference to Figure 9 This embodiment is beneficial to the fine powder forming a slope on the second valve plate 233. Specifically, the fine powder distributed on the second valve plate 233 gradually decreases along the conveying direction of the first pipeline 211. With reference to Figure 10 During the process of the second valve plate 233 being opened, the fine powder pile will gradually slide down on the slope formed by itself, and then avoid a large amount of fine powder being concentrated and transported into the first pipeline 211 in a short time. Therefore, this embodiment is beneficial to the airflow in the first pipeline 211 transporting the fine powder along the first pipeline 211, and improves the transmission efficiency of the fine powder.

[0069] In some embodiments, with reference to Figure 10 In the case where the second valve plate 233 is in the opened state, the second valve plate 233 is inclined downward along the conveying direction of the first pipeline 211, and the side of the second valve plate 233 adjacent to the second side of the valve body 231 at least partially extends into the first pipeline 211. Figure 10The middle red arrow shows the flow direction of the airflow in the first pipeline 211. In this embodiment, the second valve plate 233 at least partially extends into the first pipeline 211 at the side of the second valve body 231, i.e. the edge of the side of the second valve plate 233 at the second valve body 231 protrudes from the inner wall of the first pipeline 211. When the airflow in the first pipeline 211 passes the second valve plate 233, the flow rate of the airflow increases, and when the airflow reaches the edge of the side of the second valve plate 233 at the second valve body 231, the airflow in the first pipeline 211 is inclined upward. This is beneficial to lift the fine particles on the second valve plate 233 upward, and further beneficial to disperse and suspend the fine particles in the first pipeline 211, and improve the transmission efficiency of the fine particles.

[0070] With reference to Figure 7 In some embodiments, the connection valve 230 further comprises a first driving member 234. The first driving member 234 is connected to the first valve plate 232, and the first driving member 234 is used to drive the first valve plate 232 to open or close.

[0071] With reference to Figure 8 In some embodiments, the connection valve 230 further comprises a second driving member 235. The second driving member 235 is connected to the second valve plate 233, and the second driving member 235 is used to drive the second valve plate 233 to open or close.

[0072] For example, the first driving member 234 and the second driving member 235 can be air cylinders or hydraulic cylinders.

[0073] In the above embodiment, the first valve plate 232 and the second valve plate 233 are respectively driven by independent driving members, which is beneficial to adjust the time interval of opening of the first valve plate 232 and the second valve plate 233 according to the size of different fine particle granularity.

[0074] In some embodiments, a control system is connected to the first driving member 234 and the second driving member 235 respectively, so that the control system can independently control the first driving member 234 to drive the first valve plate 232 to open or close, and independently control the second driving member 235 to drive the second valve plate 233 to open or close. Specifically, the control system can be a PLC (Programmable Logic Controller) control system.

[0075] With reference to Figure 10 and Figure 11The second valve plate 233 has a plurality of material leakage gaps 2331 on one side adjacent to the second side of the valve body 231, and the material leakage gaps 2331 are arranged at intervals. Specifically, during the opening of the second valve plate 233, the fines on the second valve plate 233 slide downward along the second valve plate 233, and the fines opposite to the material leakage gaps 2331 slide a short distance, which is beneficial to the fines being transported into the first pipeline 211 at different positions in the transport direction of the first pipeline 211, beneficial to the dispersion of the fines in the first pipeline 211, and further beneficial to the rapid transport of the fines along the first pipeline 211 under the action of the airflow.

[0076] In some embodiments, the distance between two adjacent material leakage gaps 2331 is greater than the width of the material leakage gap 2331. Specifically, during the sliding of the fines downward along the second valve plate 233, part of the fines opposite to the gap between two adjacent material leakage gaps 2331 will slide laterally into the material leakage gap 2331 when reaching the plate body between the two adjacent material leakage gaps 2331. In this embodiment, the distance between two adjacent material leakage gaps 2331 is greater than the width of the material leakage gap 2331, which is beneficial to the uniform dispersion of the fines, so as to facilitate the suspension and transport of the fines along the first pipeline 211 under the action of the airflow.

[0077] In some embodiments, as shown in Figures 8 to 10 The valve body 231 is provided with a temporary storage hopper 236 between the first valve plate 232 and the second valve plate 233, and the temporary storage hopper 236 has a metal lip 2361 and a sealing lip 2362 adjacent to one end of the second valve plate 233. The metal lip 2361 is arranged in the sealing lip 2362, and a heat insulation cavity 2363 is formed between the metal lip 2361 and the sealing lip 2362. When the second valve plate 233 is in a closed state, the metal lip 2361 abuts against the surface of the second valve plate 233, and the sealing lip 2362 is in sealing cooperation with the surface of the second valve plate 233.

[0078] In some embodiments, the part of the sealing lip 2362 in contact with the second valve plate 233 is made of a non-metallic material. For example, the part of the sealing lip 2362 in contact with the second valve plate 233 can be: high-strength graphite composite plate, flexible graphite metal core plate, mica composite plate, perfluorinated rubber, fluororubber, silicone rubber, hydrogenated nitrile rubber.

[0079] In the above embodiment, the sealing lip 2362 is provided to improve the sealing of the connecting valve 230. In addition, the heat insulation cavity 2363 is formed between the metal lip 2361 and the sealing lip 2362 to protect the sealing lip 2362. It should be noted that the metal chips generated by the processing equipment 10 have a high temperature, and although the temperature of the metal chips is reduced after being conveyed by the branch pneumatic conveying system 100, the metal chips still have a high temperature when reaching the connecting valve 230. Therefore, the embodiment is beneficial to avoid damage to the sealing lip 2362 due to the high temperature, and is beneficial to improve the service life of the sealing lip 2362.

[0080] In some embodiments, with reference to Figure 9 , the first side wall of the temporary hopper 236 adjacent to the first side of the valve body 231 is a first side wall, and the first side wall is inclined downward along the conveying direction of the first pipeline 211. This embodiment is beneficial to the accumulation of the chips on the side of the second valve plate 233 adjacent to the first side of the valve body 231, and is beneficial to the formation of an inclined slope on the second valve plate 233, so that the metal chips can slide on the slope formed by themselves. In this way, it is beneficial to avoid the accumulation of metal chips after entering the first pipeline 211.

[0081] In some embodiments, with reference to Figure 2 and Figure 12 , the end of the first pipeline 211 away from the main fan 220 has a make-up section 2111. The make-up section 2111 has a make-up opening 2112, and the first pipeline 211 is in communication with the atmosphere through the make-up opening 2112. The inner wall of the make-up section 2111 has a guide plate 2113, which is spirally arranged along the inner wall of the make-up section 2111, and the width of the guide plate 2113 is less than the radius of the main pneumatic pipeline 210. For example, the first pipeline 211 has a conveying pipe section for conveying the chips. Specifically, the downstream end of the make-up section 2111 is connected to the upstream end of the conveying pipe section. The branch pneumatic conveying system 100 is located downstream of the make-up section 2111, i.e., the branch pneumatic conveying system 100 is connected to the conveying pipe section. Specifically, during the conveying of the chips, the air flows from the make-up opening 2112 and is conveyed into the conveying pipe section along the make-up section 2111. Therefore, during the conveying of the chips, the chips will not enter the make-up section 2111.

[0082] In the above embodiment, the guide plate 2113 can guide the air entering the first pipeline 211, so that the gas in the first pipeline 211 can form a spiral air flow, which is beneficial to the lifting of the chips in the first pipeline 211 and the prevention of the chips from settling in the first pipeline 211, and therefore the scheme is beneficial to improve the conveying efficiency of the chips. For example, the helix angle of the guide plate 2113 is less than or equal to 30°. Specifically, the helix angle of the guide plate 2113 is 15° to 30°.

[0083] In some embodiments, referring to Figure 6 The main pneumatic pipeline 210 has a second pipeline 212 and an arc-shaped pipeline 213. The second pipeline 212 is vertically arranged. The first end of the arc-shaped pipeline 213 is smoothly connected with the first pipeline 211, and the second end of the arc-shaped pipeline 213 is smoothly connected with the second pipeline 212. The inner diameter of the arc-shaped pipeline 213 gradually decreases from the first end to the second end. Specifically, the inner diameter of the first end of the arc-shaped pipeline 213 is equal to the inner diameter of the first pipeline 211, and the two are coaxially connected. The inner diameter of the second end of the arc-shaped pipeline 213 is equal to the inner diameter of the second pipeline 212, and the two are coaxially connected.

[0084] In some embodiments, the fine dust treatment device 20 is located at the top floor of the workshop. In the case of a large number of processing devices 10 in the workshop, it is generally necessary to distribute different processing devices 10 on different floors. Compared with the conveying amount of the processed products and the corresponding materials, the conveying amount of the fine dust is smaller. Therefore, this embodiment is beneficial to reduce the workshop logistics transportation cost.

[0085] In the above embodiment, the inner diameter of the arc-shaped pipeline 213 gradually decreases from the first end to the second end, and the flow rate gradually increases during the fluid passing through the arc-shaped pipeline 213, thereby being beneficial to the vertical upward conveying of the fine dust driven by the airflow. In addition, in some embodiments, by improving the assembly mode of the connecting valve 230 and the first pipeline 211 and the structure of the connecting valve 230, the fine dust conveyed into the first pipeline 211 by the branch pneumatic conveying system 100 is more uniformly dispersed, thereby being beneficial to avoiding that the amount of fine dust carried per unit volume in the first pipeline 211 is too much in a short time. Therefore, the workshop conveying device provided by the present application is beneficial to preventing the fine dust from blocking the conveying pipeline at the bend of the arc-shaped pipeline 213.

[0086] Referring to Figure 3 and Figure 13 In some embodiments, the branch pneumatic conveying system 100 further includes a secondary cyclone tower 130 and a secondary spray tower 140. The secondary cyclone tower 130 has a first gas inlet 131, a first gas outlet 132, and a first dust outlet 133. Specifically, the first gas inlet 131 of the secondary cyclone tower 130 is connected with the processing device 10 generating fine dust through the branch pneumatic pipeline 110. The first gas outlet 132 of the secondary cyclone tower 130 is connected with the branch air blower 120. Specifically, the secondary spray tower 140 is arranged between the secondary cyclone tower 130 and the branch air blower 120, and the first gas outlet 132 of the secondary cyclone tower 130 is connected with the branch air blower 120 through the secondary spray tower 140. The first dust outlet 133 of the secondary cyclone tower 130 is connected with the main pneumatic pipeline 210 through the connecting valve 230. The secondary spray tower 140 is used for cleaning the gas discharged through the secondary cyclone tower 130.

[0087] In the above embodiments, the secondary cyclone tower 130 can separate the fine dust collected and transported by the branch pneumatic conveying system 100 from the airflow in the branch pneumatic pipeline 110 used for transporting the fine dust, so that the fine dust can be intermittently transported to the connecting valve 230 by the branch pneumatic conveying system 100, so that the unit volume of gas in the main pneumatic pipeline 210 can carry more fine dust, thereby improving the conveying efficiency and processing efficiency of the fine dust. In addition, the secondary cyclone tower 130 can clean the airflow in the branch pneumatic pipeline 110 used for transporting the fine dust, so as to avoid that the fine fine dust is brought into the atmosphere by the airflow.

[0088] In some embodiments, the branch fan 120 is connected to the exhaust port of the secondary spray tower 140, so that the branch fan 120 can provide power for the airflow entering the secondary spray tower 140, and at the same time the secondary spray tower 140 can also clean the airflow entering the branch fan 120.

[0089] In some optional embodiments, the air outlet of the branch fan 120 can be connected to the workshop fresh air system, so that the branch fan 120 can also provide airflow for the workshop fresh air system.

[0090] Referring to Figure 1 and Figure 2 In some embodiments, the main pneumatic conveying system 200 further comprises a main cyclone tower 240 and a main spray tower 250. The main cyclone tower 240 comprises a second air inlet 244, a second air outlet 245 and a second dust outlet 246. Specifically, the second air inlet 244 of the main cyclone tower 240 is connected to the plurality of branch pneumatic conveying systems 100 through the main pneumatic pipeline 210 and the connecting valve 230. The second air outlet 245 of the main cyclone tower 240 is connected to the main fan 220. Specifically, the main spray tower 250 is arranged between the main cyclone tower 240 and the main fan 220, and the second air outlet 245 of the main cyclone tower 240 is connected to the main fan 220 through the main spray tower 250. The second dust outlet 246 of the main cyclone tower 240 is connected to the feed inlet of the fine dust treatment equipment 20, and the main spray tower 250 is used to clean the gas discharged by the main fan 220.

[0091] In the above embodiments, the main cyclone tower 240 can separate the airflow used for transporting the fine dust in the main pneumatic conveying system 200 from the fine dust, so as to facilitate the feeding of the fine dust into the fine dust treatment equipment 20. In order to avoid that the fine fine dust carried by the airflow used for transporting the fine dust enters the atmosphere, the main spray tower 250 is arranged to remove the fine fine dust in the airflow used for transporting the fine dust.

[0092] In some embodiments, the main fan 220 is connected to the exhaust port of the main spray tower 250, so that the main fan 220 can provide power for the airflow entering the main spray tower 250, and at the same time the main spray tower 250 can also clean the airflow entering the main fan 220.

[0093] In some optional embodiments, the outlet of the main air fan 220 can be connected with the workshop fresh air system, so that the branch air fan 120 can also provide air flow for the workshop fresh air system.

[0094] With reference to Figure 14 The main cyclone tower 240 includes a first sub-tower 241 and a second sub-tower 242. Specifically, the first sub-tower 241 and the second sub-tower 242 are arranged in parallel. Specifically, the first sub-tower 241 and the second sub-tower 242 are respectively connected with the second air inlet 244 and the second air outlet 245. In this embodiment, the first sub-tower 241 and the second sub-tower 242 share the air inlet and the air outlet, which is beneficial to reduce the height of the main cyclone tower 240. This embodiment is beneficial to reduce the length of the second pipeline 212, so as to facilitate the transportation of the fines in the second pipeline 212. In addition, the scheme provided in this embodiment is also beneficial to adapt to the installation of the main air conveying system 200 in a workshop with a small height space.

[0095] In some embodiments, the main cyclone tower 240 further includes a discharge machine 243. Specifically, the first sub-tower 241 and the second sub-tower 242 are connected with the discharge machine 243, so that the separated fines in the first sub-tower 241 and the second sub-tower 242 can be discharged from the discharge machine 243 into the fine treatment device 20. Specifically, the fines discharged from the discharge machine 243 can be transported to the fine treatment device 20 by a screw conveyor. Specifically, the discharge machine 243 forms a second discharge port 246. The discharge machine 243 can be all types of discharge machines suitable for cyclone towers in the prior art, such as a double-plate valve discharge machine. Therefore, the specific structure of the discharge machine 243 will not be described in detail in this embodiment.

[0096] In some embodiments, the control system is connected with the machining device 10 generating the fines, and the control system is used to start the branch air conveying system 100 when any one of the machining devices 10 connected with the branch air conveying system 100 is started. In the case that all the machining devices 10 connected with the branch air conveying system 100 are stopped, the control system controls the corresponding branch air conveying system 100 to be stopped.

[0097] The above-mentioned embodiments can realize the linkage control of the machining device 10 and the workshop conveying device, which is beneficial to the adjustment of the working state of each branch air conveying system 100 by the workshop conveying device according to the working state of the machining device 10 in the workshop, and is further beneficial to reduce the energy consumption of the workshop conveying device.

[0098] In some embodiments, the branch pneumatic conveying system 100 is shut down after a first preset time length after all the processing equipment 10 connected to the branch pneumatic conveying system 100 is stopped. That is, after all the processing equipment 10 connected to the branch pneumatic conveying system 100 is stopped, the corresponding branch pneumatic conveying system 100 is not shut down immediately, but is shut down after a delay of the first preset time length. For example, the first preset time length can be, but is not limited to, 5 minutes. Specifically, the value of the first preset time length can be related to the size of the branch pneumatic pipeline 110 in the branch pneumatic conveying system 100, the number and type of the processing equipment 10 connected. Therefore, the specific value of the first preset time length is not limited in this embodiment.

[0099] The above embodiment can ensure that the fine particles in the branch pneumatic conveying system 100 can be all conveyed to the main pneumatic conveying system 200 by delaying the shutdown of the branch pneumatic conveying system 100 after all the processing equipment 10 connected to the branch pneumatic conveying system 100 is stopped, so as to avoid the fine particles staying in the branch pneumatic conveying system 100, thereby being beneficial to preventing the branch pneumatic pipeline 110 of the branch pneumatic conveying system 100 from being blocked.

[0100] The application further provides a control method of a workshop conveying device. The control method of the workshop conveying device can be applied to the workshop conveying device provided by the application.

[0101] For example, the control method of the workshop conveying device comprises:

[0102] In step 101, the working state of the processing equipment connected to the branch pneumatic conveying system 100 in the workshop is obtained. Specifically, the working state of the processing equipment can be obtained according to the current detection of the processing equipment connection circuit. Of course, the working state of the processing equipment can also be obtained by obtaining the control signal of the processing equipment start switch.

[0103] In step 102, the branch pneumatic conveying system 100 is started when any one of the processing equipment 10 connected to the branch pneumatic conveying system 100 is started. Specifically, the branch pneumatic conveying system 100 can be started by the PLC controller.

[0104] In step 103, the branch pneumatic conveying system 100 is shut down after all the processing equipment 10 connected to the branch pneumatic conveying system 100 is stopped for a preset time length.

[0105] The above embodiment can realize linkage control of the branch pneumatic conveying system 100 and the processing equipment 10, thereby being beneficial to adjusting the opening or shutdown of each branch pneumatic conveying system 100 according to the scheduling of the processing equipment 10 in the workshop, avoiding the empty running of the branch pneumatic conveying system 100, and thereby being beneficial to reducing the energy consumption of the conveying device in the workshop. For example, after all the processing equipment 10 connected with the branch pneumatic conveying system 100 is stopped for a first preset time length, the branch pneumatic conveying system 100 is shut down. For example, the first preset time length can be, but is not limited to, 5 minutes. Specifically, the value of the first preset time length can be related to the size of the branch pneumatic pipeline 110 in the branch pneumatic conveying system 100, the number and type of the connected processing equipment 10. Therefore, the embodiment does not limit the specific value of the first preset time length.

[0106] In some embodiments, the control method of the conveying device in the workshop further includes: step 104, controlling the two connection valves 230 connected with the activated branch pneumatic conveying system 100 to sequentially convey the fine particles to the main pneumatic pipeline 210, and the time interval for the two connection valves 230 to convey the fine particles to the main pneumatic pipeline 210 is a second preset time length. For example, the second preset time length can be 10s.

[0107] The embodiment is beneficial to preventing the airflow in the branch pneumatic conveying system 100 from flowing into the airflow in the main branch pneumatic conveying system 200.

[0108] For example, the control of the connection valve 230 connected with the activated branch pneumatic conveying system 100 to convey the fine particles to the main pneumatic pipeline 210 includes:

[0109] Step 1041, controlling the first valve plate 232 of the connection valve 230 to open, so that the fine particles collected by the secondary cyclone tower 130 can enter between the first valve plate 232 and the second valve plate 233.

[0110] Step 1042, after the fine particles enter between the first valve plate 232 and the second valve plate 233, controlling the first valve plate 232 of the connection valve 230 to close.

[0111] Step 1043, controlling the second valve plate 233 of the connection valve 230 to open, so that the fine particles between the first valve plate 232 and the second valve plate 233 can enter the first pipeline 211.

[0112] Step 1044, controlling the second valve plate 233 of the connection valve 230 to close.

[0113] In the above embodiments, the fine powder in the different branch pneumatic conveying systems 100 is prevented from being simultaneously conveyed to the main pneumatic pipeline 210, which not only prevents the airflow in the different branch pneumatic conveying systems 100 from interfering with each other, but also prevents the airflow speed in the main pneumatic conveying system 200 from being reduced, thereby preventing the main pneumatic pipeline 210 and improving the efficiency of the main pneumatic conveying system 200 in conveying fine powder.

[0114] It should be noted that the terms "comprising", "including", or any other variant thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without more limitations, an element defined by the phrase "comprising a" does not exclude the existence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, it should be pointed out that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0115] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A workshop conveying device, characterized in that, include: Multiple branch pneumatic conveying systems (100), each branch pneumatic conveying system (100) includes a branch pneumatic pipe (110) and a branch fan (120). The branch pneumatic pipe (110) is connected to the processing equipment (10) that generates fine chips. The branch fan (120) is connected to the branch pneumatic pipe (110) and is used to drive the fine chips to be conveyed along the branch pneumatic pipe (110). A main pneumatic conveying system (200) includes a main pneumatic pipeline (210), a main blower (220), and multiple connecting valves (230). The main pneumatic pipeline (210) is connected to multiple branch pneumatic conveying systems (100) through the connecting valves (230). The main blower (220) is connected to the main pneumatic pipeline (210) and is used to drive fine debris to be conveyed along the main pneumatic pipeline (210) to the fine debris processing equipment (20). The control system is connected to the connecting valve (230) and is used to control multiple connecting valves (230) to sequentially deliver fine debris to the main pneumatic pipeline (210), and at most one branch pneumatic pipeline (110) contains fine debris that enters the main pneumatic pipeline (210) through the connecting valve (230) at the same time. The connecting valve (230) includes a valve body (231), a first valve plate (232), and a second valve plate (233). The valve body (231) has a vertically arranged conveying channel (2311), and the main pneumatic pipeline (210) has a horizontally arranged first pipeline (211). Along the conveying direction of the first pipeline (211), the valve body (231) has a first side and a second side, with the first side adjacent to the upstream end of the first pipeline (211) relative to the second side. The first valve plate (232) and the second valve plate (233) are sequentially spaced on the valve body (231) along the conveying direction of the conveying channel (2311). The first valve plate (232) is rotatably connected to the second side of the valve body (231); the second valve plate (233) is rotatably connected to the first side of the valve body (231). The valve body (231) is provided with a temporary storage hopper (236), which is located between the first valve plate (232) and the second valve plate (233). The temporary storage hopper (236) has a metal lip (2361) and a sealing lip (2362) at one end adjacent to the second valve plate (233). The metal lip (2361) is disposed in the sealing lip (2362), and a heat insulation cavity (2363) is formed between the metal lip (2361) and the sealing lip (2362). When the second valve plate (233) is in the closed state, the metal lip (2361) abuts against and adheres to the surface of the second valve plate (233), and the sealing lip (2362) seals against the surface of the second valve plate (233). The first duct (211) has a makeup air section (2111) at the end away from the main air blower (220). The makeup air section (2111) has a makeup air inlet (2112), and the first duct (211) is connected to the atmosphere through the makeup air inlet (2112). The inner wall of the makeup air section (2111) has a guide plate (2113), which is spirally arranged along the inner wall of the makeup air section (2111). The width of the guide plate (2113) is smaller than the radius of the main pneumatic duct (210).

2. The workshop conveying device according to claim 1, characterized in that: With the first valve plate (232) in the closed state, the first valve plate (232) tilts upward along the conveying direction of the first pipe (211); And / or, when the second valve plate (233) is in the closed state, the second valve plate (233) extends along the conveying direction of the first pipe (211); And / or, when the second valve plate (233) is in the open state, the second valve plate (233) is inclined downward along the conveying direction of the first pipe (211), and at least part of the side of the second valve plate (233) adjacent to the second side of the valve body (231) extends into the first pipe (211); And / or, the connecting valve (230) further includes a first driving member (234), which is connected to the first valve plate (232) and is used to drive the first valve plate (232) to open or close; And / or, the connecting valve (230) further includes a second drive member (235), which is connected to the second valve plate (233) and is used to drive the second valve plate (233) to open or close; And / or, the second valve plate (233) has a plurality of leakage notches (2331) on one side of the second side adjacent to the valve body (231), the leakage notches (2331) being spaced apart, and the distance between two leakage notches (2331) being greater than the width of the leakage notches (2331).

3. The workshop conveying device according to claim 1, characterized in that: The side wall of the temporary storage hopper (236) adjacent to the first side of the valve body (231) is the first side wall, which is inclined downward along the conveying direction of the first pipe (211).

4. The workshop conveying device according to claim 1, characterized in that: The main pneumatic pipe (210) has a second pipe (212) and an arc-shaped pipe (213). The second pipe (212) is vertically arranged. The first end of the arc-shaped pipe (213) is smoothly connected to the first pipe (211), and the second end of the arc-shaped pipe (213) is smoothly connected to the second pipe (212). From the first end of the arc-shaped pipe (213) to the second end of the arc-shaped pipe (213), the inner diameter of the arc-shaped pipe (213) gradually decreases. And / or, the helix angle of the guide plate (2113) is less than or equal to 30°.

5. The workshop conveying device according to any one of claims 1 to 3, characterized in that: The branch pneumatic conveying system (100) further includes a secondary cyclone tower (130) and a secondary spray tower (140). The first air inlet (131) of the secondary cyclone tower (130) is connected to the processing equipment (10) that generates fine chips through the branch pneumatic pipeline (110). The first air outlet (132) of the secondary cyclone tower (130) is connected to the branch fan (120) through the secondary spray tower (140). The first chip discharge port (133) of the secondary cyclone tower (130) is connected to the main pneumatic pipeline (210) through the connecting valve (230). The secondary spray tower (140) is used to clean the gas discharged through the secondary cyclone tower (130). And / or, the main pneumatic conveying system (200) further includes a main cyclone tower (240) and a main spray tower (250). The second air inlet (244) of the main cyclone tower (240) is connected to multiple branch pneumatic conveying systems (100) through the main pneumatic pipeline (210) and the connecting valve (230); the second air outlet (245) of the main cyclone tower (240) is connected to the main blower (220) through the main spray tower (250); the second chip discharge port (246) of the main cyclone tower (240) is connected to the feed inlet of the fine chip treatment equipment (20); and the main spray tower (250) is used to clean the gas discharged through the main cyclone tower (240). And / or, the control system is connected to the processing equipment (10) that generates fine chips, and the control system is used to start the branch pneumatic conveying system (100) when any of the processing equipment (10) connected to the branch pneumatic conveying system (100) is started, and the control system is also used to shut down the branch pneumatic conveying system (100) after all the processing equipment (10) connected to the branch pneumatic conveying system (100) has been shut down for a first preset time.

6. A control method for a workshop conveying device, characterized in that, The control method, applicable to any one of claims 1 to 5, comprises: Obtain the working status of the processing equipment connected to the branch pneumatic conveying system (100) in the workshop; When any of the processing equipment (10) connected to the branch pneumatic conveying system (100) is started, the branch pneumatic conveying system (100) is started. After all the processing equipment (10) connected to the branch pneumatic conveying system (100) has been shut down for a first preset time, the branch pneumatic conveying system (100) is shut down.

7. The control method according to claim 6, characterized in that, The control method further includes: The connecting valve (230) connected to the branch pneumatic conveying system (100) controlled by the start sequentially conveys fine debris to the main pneumatic pipeline (210), and the time interval between the two connecting valves (230) conveying fine debris to the main pneumatic pipeline (210) is a second preset time.

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