Powder conveying path switching and dredging linkage device

Abstract

The invention relates to the technical field of powder conveying equipment, and discloses a powder conveying path switching dredging linkage device which comprises a mounting frame, a path switching mechanism is fixedly arranged at the bottom of the inner side of the mounting frame, and a splicing mounting mechanism is arranged outside the path switching mechanism. A powder extraction mechanism is arranged at the end, away from the path switching mechanism, of the splicing mounting mechanism, a storage tank is fixedly connected to the top of the mounting frame, a sealing cover is in threaded connection with the top of the storage tank, an air pressure discharging mechanism is arranged at the top of the sealing cover, and the air pressure discharging mechanism discharges air. And a vacuum pump is fixedly connected to the outer part of the storage tank. According to the powder conveying device, path switching during powder conveying is achieved through the path switching mechanism, the structure is simple, the cost is low, meanwhile, maintenance is convenient, the maintenance efficiency is improved, meanwhile, the powder conveying device can be matched with a vacuum pump to exhaust and pressurize, blockage can be prevented in the powder conveying process, and the dredging effect is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of powder conveying equipment, and in particular to a powder conveying path switching and dredging linkage device. Background Art

[0002] A powder conveying device is a device used to transport powdered materials from one location to another. This device is commonly used in industrial production, including but not limited to pneumatic conveying equipment, vacuum conveyors, multi-piece plunger powder pressure conveying devices and powder material conveying devices.

[0003] The powder conveying device in the prior art needs to use a path switching device when conveying powder due to different conveying locations. However, the powder conveying path switching device in the prior art generally needs to use sensors, power units, controllers and other structures to achieve it. The structure is complex and the cost is high. If it is damaged, it is difficult to repair. Therefore, it increases the production cost and reduces the maintenance efficiency. Summary of the invention

[0004] In view of the deficiencies of the prior art, the present invention provides a powder conveying path switching and unblocking linkage device, which solves the problems in the prior art that the path switching device during powder conveying is complex in structure and high in cost, difficult to repair after damage, and reduces the maintenance efficiency.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a powder conveying path switching and unblocking linkage device, comprising a mounting frame, a path switching mechanism is fixedly arranged on the inner bottom of the mounting frame, a splicing mounting mechanism is arranged on the outside of the path switching mechanism, a powder extraction mechanism is arranged on the end of the splicing mounting mechanism away from the path switching mechanism, a storage tank is fixedly connected to the top of the mounting frame, a sealing cover is threadedly connected to the top of the storage tank, a pneumatic discharge mechanism is arranged on the top of the sealing cover, the pneumatic discharge mechanism discharges gas, a vacuum pump is fixedly connected to the outside of the storage tank, an exhaust hose is fixedly connected to the output end of the vacuum pump, and the exhaust hose is fixedly connected to the inside of the sealing cover and passes through the end, the powder conveying path is switched by using the path switching mechanism, the vacuum pump is turned on, and the air in the powder extraction mechanism is extracted by using the input end of the vacuum pump, at which time suction is generated in the powder extraction mechanism to convey the powder.

[0006] Preferably, the path switching mechanism includes an outer shell, the outside of the outer shell is fixedly connected to the inner bottom of the mounting frame, the outer side of the outer shell is fixedly connected to a plurality of feed pipes, a return spring is provided inside the feed pipe, a sealing sleeve is slidably connected inside the feed pipe, the inner side of the sealing sleeve is fixedly connected to a fixing frame, a side of the fixing frame away from the return spring is fixedly connected to a movable rod, an end of the movable rod away from the fixing frame is fixedly connected to a first conical head, a plurality of feed grooves are provided on the outer periphery of the feed pipe, a discharge pipe is rotatably connected to the top of the outer shell, a mounting cylinder is fixedly connected to the bottom of the discharge pipe, a push spring is provided inside the mounting cylinder, a movable sleeve is slidably connected inside the mounting cylinder, an end of the movable sleeve away from the push spring is fixedly connected to a connecting column, an end of the connecting column away from the movable sleeve is fixedly connected to a second conical head, and a discharge groove is provided on the outside of the mounting cylinder.

[0007] Preferably, the splicing installation mechanism includes an installation sleeve, the inner side of the installation sleeve is slidably connected to the outside of the feed pipe, the outside of the installation sleeve is rotatably connected to a rotating clamp arm, the bottom of the rotating clamp arm close to the outer shell is fixedly connected to a spring, the bottom of the spring is fixedly connected to the outside of the installation sleeve, the side of the installation sleeve close to the outer shell is fixedly connected to a tension spring 1, the end of the tension spring 1 away from the installation sleeve is fixedly connected to the outside of the outer shell, a connecting tube is provided inside the installation sleeve, the outside of the connecting tube is fixedly connected to a clamp ring, and the clamp ring is engaged with the rotating clamp arm.

[0008] Preferably, the powder extraction mechanism includes a plurality of material delivery channels, and one end of the plurality of material delivery channels close to the shell is fixedly connected to one end of the plurality of connecting tubes away from the shell, and one end of the material delivery channels away from the connecting tube is fixedly connected to a powder temporary storage tank, and the bottom of the powder temporary storage tank is fixedly connected to a solenoid valve, and the bottom of the solenoid valve is fixedly connected to a discharge pipe, and the top of the powder temporary storage tank is fixedly connected to an exhaust hose, and the input end of the vacuum pump is fixedly connected to a multi-way tube, and one end of the plurality of exhaust hoses away from the powder temporary storage tank is fixedly connected to the outside of the multi-way tube.

[0009] Preferably, the air pressure discharge mechanism includes a mounting ring, the bottom of the mounting ring is fixedly connected to the top of the sealing cover, the middle of the mounting ring is fixedly connected to a ventilation pipe, the outside of the mounting ring is fixedly connected to a plurality of outer rods, the inside of the outer rods is slidably connected to a movable limit block, the top of the movable limit block is fixedly connected to an inner rod, the inside of the ventilation pipe is slidably connected to an inner plug, a plurality of exhaust holes are provided on the outer wall of the inner plug, an air inlet hole is provided at the bottom of the inner plug, the top of the air inlet hole is fixedly connected to a top cover, the tops of the plurality of inner rods are fixedly connected to the outside of the top cover, the bottom of the top cover is fixedly connected to a second tension spring, and the bottom of the second tension spring is fixedly connected to the top of the mounting ring.

[0010] Preferably, a rotating frame is fixedly connected to the outside of the discharge pipe, and the top of the discharge pipe is rotatably connected to the bottom of the storage tank.

[0011] Preferably, the bottom of the discharge pipe is connected to the discharge trough, and the top of the discharge pipe passes through the bottom of the storage tank.

[0012] Preferably, the tension spring is provided on the outside of the feed pipe, and the outer sleeve of the connecting pipe is provided with a sealing sleeve.

[0013] Preferably, the second sleeve of the tension spring is arranged outside the ventilation pipe, and the inner rod passes through the top of the outer rod.

[0014] Preferably, the bottom of the ventilation pipe passes through the top of the sealing cover, and a sealing gasket is provided on the inner wall of the ventilation pipe.

[0015] The present invention provides a powder conveying path switching and dredging linkage device. It has the following beneficial effects: 1. The present invention realizes path switching during powder transportation through a path switching mechanism, and has a simple structure, low cost, and is convenient for maintenance, thereby improving maintenance efficiency. At the same time, it can also cooperate with a vacuum pump for exhaust and pressurization, thereby preventing blockage during powder transportation and achieving a clearing effect.

[0016] 2. The present invention can quickly connect the powder conveying pipeline through the splicing installation mechanism, thereby speeding up the connection of the pipeline during powder conveying, facilitating the operation of the staff, improving the connection efficiency of the pipeline, and further improving the efficiency of powder conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the structure of the housing in the present invention; Figure 3 It is a schematic diagram of the structure of the discharge pipe in the present invention; Figure 4 It is a schematic diagram of the structure of the blocking sleeve in the present invention; Figure 5 It is a structural schematic diagram of the movable sleeve in the present invention; Figure 6 It is a schematic diagram of the structure of installing the outer jacket in the present invention; Figure 7 It is a structural schematic diagram of the clamp ring in the present invention; Figure 8 It is a structural schematic diagram of the inner rod in the present invention; Fig. 9 It is a schematic diagram of the structure of the inner plug in the present invention.

[0018] Among them, 1. mounting frame; 2. path switching mechanism; 201. housing; 202. feed pipe; 203. reset spring; 204. blocking sleeve; 205. fixing frame; 206. movable rod; 207. conical head 1; 208. feed trough; 209. discharge pipe; 210. mounting cylinder; 211. push spring; 212. movable sleeve; 213. connecting column; 214. conical head 2; 215. discharge trough; 216. rotating frame; 3. splicing mounting mechanism; 301. mounting jacket; 302. rotating clamp arm; 303. shrapnel; 304. tension spring 1; 305, connecting pipe; 306, clamping ring; 4, powder extraction mechanism; 401, feeding channel; 402, powder temporary storage tank; 403, solenoid valve; 404, discharge pipe; 405, exhaust hose; 406, multi-way pipe; 5, storage tank; 6, sealing cover; 7, air pressure discharge mechanism; 701, mounting ring; 702, vent pipe; 703, outer rod; 704, movable limit block; 705, inner rod; 706, inner plug; 707, exhaust hole; 708, air inlet hole; 709, top cover; 710, tension spring 2; 8, vacuum pump; 9, exhaust hose. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Fig. 9 The embodiment of the present invention provides a powder conveying path switching and unblocking linkage device, including a mounting frame 1, a path switching mechanism 2 is fixedly arranged at the inner bottom of the mounting frame 1, the path switching mechanism 2 can switch the conveying path of the powder, a splicing mounting mechanism 3 is arranged outside the path switching mechanism 2, the splicing mounting mechanism 3 facilitates the connection of the path, and a powder extraction mechanism 4 is arranged at one end of the splicing mounting mechanism 3 away from the path switching mechanism 2, the powder extraction mechanism 4 can convey the powder, and a storage tank 5 is fixedly connected to the top of the mounting frame 1, the storage tank 5 stores the powder, and the top of the storage tank 5 is threadedly connected A sealing cover 6 is connected, and the sealing cover 6 can seal the top of the storage tank 5. An air pressure exhaust mechanism 7 is arranged on the top of the sealing cover 6, and the air pressure exhaust mechanism 7 exhausts gas. A vacuum pump 8 is fixedly connected to the outside of the storage tank 5, and an exhaust hose 9 is fixedly connected to the output end of the vacuum pump 8. The end of the exhaust hose 9 away from the vacuum pump 8 is fixedly connected to the inside of the sealing cover 6 and passes through it. The path switching mechanism 2 is used to switch the conveying path of the powder, and the vacuum pump 8 is turned on. The air in the powder extraction mechanism 4 is extracted by the input end of the vacuum pump 8. At this time, suction is generated in the powder extraction mechanism 4 to convey the powder.

[0021] The path switching mechanism 2 includes a shell 201, which provides an installation space and also provides a space for switching the powder conveying path. The outside of the shell 201 is fixedly connected to the inner bottom of the mounting frame 1, and a plurality of feeding pipes 202 are fixedly connected to the outside of the shell 201. The inside of the feeding pipe 202 is provided with a return spring 203. The inside of the feeding pipe 202 is slidably connected with a plugging sleeve 204, and the inner side of the plugging sleeve 204 is fixedly connected with a fixing frame 205. The fixing frame 205 provides an installation position, and a movable rod 206 is fixedly connected to the side of the fixing frame 205 away from the return spring 203. The movable rod 206 can play a connecting role, and a conical head 207 is fixedly connected to the end of the movable rod 206 away from the fixing frame 205. The outer periphery of the tube 202 is provided with a plurality of feed slots 208, into which powder can enter; the top of the outer shell 201 is rotatably connected with a discharge pipe 209, which can conveniently pass the powder in the storage tank 5 into the interior of the outer shell 201; the return spring 203 can use its own reaction force to push the blocking sleeve 204 to move in the direction of the feed slot 208, and then the blocking sleeve 204 can be used to block the feed slot 208; the bottom of the discharge pipe 209 is fixedly connected with a mounting cylinder 210, and the mounting cylinder 210 provides a mounting position; a pushing spring 211 is arranged inside the mounting cylinder 210, and a movable sleeve 212 is slidably connected inside the mounting cylinder 210, and the end of the movable sleeve 212 away from the pushing spring 211 is fixedly connected with a connecting The connecting column 213 is fixedly connected with a conical head 214 at one end of the connecting column 213 away from the movable sleeve 212. A discharge groove 215 is provided on the outside of the mounting tube 210. The pushing spring 211 can use its own reaction force to push the movable sleeve 212 to move in the direction of the discharge groove 215, so as to block the discharge groove 215. The outside of the discharge pipe 209 is fixedly connected with a rotating frame 216. The top of the discharge pipe 209 is rotatably connected to the bottom of the storage tank 5. The bottom of the discharge pipe 209 is connected to the discharge groove 215. The top of the discharge pipe 209 passes through the bottom of the storage tank 5. When the powder conveying path is switched, the rotating frame 216 is rotated. After the rotating frame 216 rotates, it drives the discharge pipe 209 to rotate. The mounting tube 210 is driven to rotate. After the mounting tube 210 rotates, the connecting column 213 can drive the second conical head 214 to rotate. When the second conical head 214 contacts the outside of the first conical head 207, since the second conical head 214 and the first conical head 207 are both inclined surfaces, when the contact is continued to rotate, the second conical head 214 and the first conical head 207 squeeze each other, so that the first conical head 207 and the second conical head 214 move to both sides, which can then drive the movable rod 206 and the connecting column 213 to move to both sides, and then drive the blocking sleeve 204 and the movable sleeve 212 to move to both sides. At this time, the blocking sleeve 204 and the movable sleeve 212 can be used to squeeze the reset spring 203 and the push spring 211.At the same time, the blocking sleeve 204 no longer blocks the feed slot 208 and the movable sleeve 212 no longer blocks the discharge slot 215. At this time, the powder inside the storage tank 5 will fall into the interior of the installation cylinder 210 through the discharge pipe 209 and the discharge slot 215. At the same time, under the action of the storage tank 5, the storage tank 5 will be inflated through the exhaust hose 9, so that the air pressure inside the storage tank 5 increases, thereby accelerating the spraying of the powder inside the storage tank 5. The increase in pressure can give the powder a pressure to fall out, thereby preventing the discharge pipe 209 from being blocked. At the same time, as the storage tank 5 is started, the powder extraction mechanism 4 can be used to transmit the suction force to the inside of the feed pipe 202, so that the powder can be extracted using the feed slot 208.

[0022] The splicing installation mechanism 3 includes an installation sleeve 301, which can provide an installation position. The inner side of the installation sleeve 301 is slidably connected to the outside of the feed pipe 202. The outside of the installation sleeve 301 is rotatably connected to a rotating clamp arm 302. The bottom of the rotating clamp arm 302 close to the shell 201 is fixedly connected to a spring piece 303. The spring piece 303 can push the rotating clamp arm 302 to reset. The bottom of the spring piece 303 is fixedly connected to the outside of the installation sleeve 301. The side of the installation sleeve 301 close to the shell 201 is fixedly connected to a pull The tension spring 304 is provided with one end of the tension spring 304 away from the installation sleeve 301 and fixedly connected to the outside of the housing 201. The installation sleeve 301 is provided with a connecting tube 305 inside. The outside of the connecting tube 305 is fixedly connected with a clamping ring 306. The clamping ring 306 is engaged with the rotating clamping arm 302. The tension spring 304 can provide a pulling force to make the rotating clamping arm 302 move toward the direction of the housing 201, so as to tighten the clamping ring 306. The tension spring 304 is sleeved on the outside of the feeding pipe 202. The outside of the connecting tube 305 is sleeved with a sealing sleeve. When performing the splicing and installation of the pipeline, first insert the connecting pipe 305 into the interior of the feeding pipe 202. Since the head of the rotating clamp arm 302 is a curved surface, and the side of the clamp ring 306 close to the feeding pipe 202 is an inclined surface, as the clamp ring 306 moves toward the rotating clamp arm 302, the head of the rotating clamp arm 302 can be pushed outward and expanded, so that the tail of the rotating clamp arm 302 can move toward the direction of the feeding pipe 202, thereby compressing the spring sheet 303. When the vertical surface of the clamp ring 306 moves into the rotating clamp arm 302, After the head of the spring piece 303 is released, the spring piece 303 is pushed to expand outward under the reaction force of the spring piece 303, so that the head of the rotating clamp arm 302 can be moved toward the direction of the feeding tube 202, and then the rotating clamp arm 302 can be clamped on the outside of the clamp ring 306, so as to complete the installation of the connecting tube 305. When removing the connecting tube 305, it is only necessary to press the tail of the rotating clamp arm 302 toward the middle, so that the head of the rotating clamp arm 302 can be expanded outward, and then the clamp ring 306 and the head of the rotating clamp arm 302 can be released.

[0023] The powder extraction mechanism 4 includes a plurality of feed channels 401, which provide conveying channels. One end of the plurality of feed channels 401 close to the housing 201 is fixedly connected to one end of the plurality of connecting pipes 305 away from the housing 201. One end of the feed channel 401 away from the connecting pipe 305 is fixedly connected to a powder temporary storage tank 402. The powder temporary storage tank 402 can provide a location for temporary storage of powder. The bottom of the powder temporary storage tank 402 is fixedly connected to an electromagnetic valve 403, which plays a role in controlling the on and off of the powder temporary storage tank 402. The bottom of the electromagnetic valve 403 is fixedly connected to a discharge pipe 404, which has the function of guiding materials. The top of the powder temporary storage tank 402 is fixedly connected to an exhaust hose 405. The input end of the vacuum pump 8 is fixedly connected to a multi-way pipe 406, which plays a role in connecting multiple pipelines. One end of a plurality of vacuum hoses 405 away from the powder temporary storage tank 402 is fixedly connected to the outside of the multi-way pipe 406. When the connecting pipe 305 is installed on the path switching mechanism 2, the connection between the feeding channel 401 and the path switching mechanism 2 is completed, the vacuum pump 8 is started, and the input end of the vacuum pump 8 is evacuated to evacuate the air inside the powder temporary storage tank 402 through the multi-way pipe 406 and the vacuum hose 405. Then, the air inside the powder temporary storage tank 402 can be evacuated. At this time, suction is generated inside the powder temporary storage tank 402 and transmitted into the inside of the path switching mechanism 2 through the feeding channel 401. At this time, if the path switching of the path switching mechanism 2 is completed, the powder inside the storage tank 5 can be sucked into the inside of the powder temporary storage tank 402. At this time, the solenoid valve 403 is opened, and the powder can be discharged through the discharge pipe 404.

[0024] The air pressure discharge mechanism 7 includes a mounting ring 701, the bottom of the mounting ring 701 is fixedly connected to the top of the sealing cover 6, the middle of the mounting ring 701 is fixedly connected to a vent pipe 702, the vent pipe 702 plays a role of communication, the outside of the mounting ring 701 is fixedly connected to a plurality of outer rods 703, the outer rods 703 provide mounting positions, the inner sliding connection of the outer rods 703 is connected to a movable limit block 704, the movable limit block 704 plays a role of limiting, the top of the movable limit block 704 is fixedly connected to an inner rod 705, the inner sliding connection of the vent pipe 702 The inner plug 706 is connected, and the inner plug 706 can block the vent pipe 702 to prevent gas leakage. A plurality of exhaust holes 707 are provided on the outer wall of the inner plug 706, and an air inlet hole 708 is provided at the bottom of the inner plug 706. The exhaust holes 707 and the air inlet holes 708 can play a role in ventilation. The top of the air inlet hole 708 is fixedly connected with a top cover 709, and the tops of the plurality of inner rods 705 are fixedly connected to the outside of the top cover 709. The bottom of the top cover 709 is fixedly connected with a tension spring 710, and the bottom of the tension spring 710 is fixedly connected to the mounting ring 709. 01, the tension spring 710 is sleeved on the outside of the vent pipe 702, the inner rod 705 penetrates the top of the outer rod 703, the bottom of the vent pipe 702 penetrates the top of the sealing cover 6, and the inner wall of the vent pipe 702 is provided with a sealing gasket. After the vacuum pump 8 is started, the output end passes the gas into the storage tank 5 through the exhaust hose 9, so that the air pressure inside the storage tank 5 increases, so that the powder inside the storage tank 5 can be pressurized and then prevented from being blocked. When the air pressure inside the storage tank 5 increases, when the air pressure inside the storage tank 5 is too high, it will push The inner plug 706 moves upward, and when the exhaust hole 707 moves to the outside of the vent pipe 702, the gas will enter the inner plug 706 through the air inlet hole 708 and be discharged through the exhaust hole 707. As the inner plug 706 rises, it can drive the top cover 709 to move upward, and then the tension spring 710 can be stretched. When the gas is discharged, the air pressure inside the storage tank 5 drops. At this time, the top cover 709 is pulled downward by the action of the tension spring 710, and then the inner plug 706 can be driven downward to block the exhaust hole 707 again.

[0025] Working principle: when the powder conveying path is switched, the rotating frame 216 is rotated, and the rotating frame 216 drives the discharge pipe 209 to rotate after rotating, and drives the installation cylinder 210 to rotate through the discharge pipe 209, and when the installation cylinder 210 rotates, it can drive the cone head 214 to rotate through the connecting column 213, and when the cone head 214 contacts the outside of the cone head 1 207, since the cone head 214 and the cone head 1 207 are both inclined surfaces, when they continue to rotate after contact, the cone head 214 and the cone head 1 207 squeeze each other, so that the cone head 1 207 and the cone head 214 move to both sides, which can then drive the movable rod 206 and the connecting column 213 to move to both sides, and then drive the blocking sleeve 204 and the movable sleeve 212 to move to both sides. When the blocking sleeve 204 and the movable sleeve 212 are pressed, the return spring 203 and the push spring 211 can be squeezed, and the blocking sleeve 204 no longer blocks the feed slot 208 and the movable sleeve 212 no longer blocks the discharge slot 215. At this time, the powder inside the storage tank 5 will fall into the interior of the installation cylinder 210 through the discharge pipe 209 and the discharge slot 215. At the same time, under the action of the storage tank 5, the interior of the storage tank 5 will be inflated through the exhaust hose 9, so that the air pressure inside the storage tank 5 increases, thereby accelerating the powder spraying out of the storage tank 5. The increase in pressure can give the powder a pressure to fall out, thereby preventing the discharge pipe 209 from being blocked. At the same time, as the storage tank 5 is started, the powder extraction mechanism 4 can be used to transmit the suction force to the inside of the feed pipe 202, so that the powder can be extracted by the feed slot 208. When performing the splicing and installation of the pipeline, first insert the connecting pipe 305 into the interior of the feeding pipe 202. Since the head of the rotating clamp arm 302 is a curved surface, and the side of the clamp ring 306 close to the feeding pipe 202 is an inclined surface, as the clamp ring 306 moves toward the rotating clamp arm 302, the head of the rotating clamp arm 302 can be pushed outward and expanded, so that the tail of the rotating clamp arm 302 can move toward the direction of the feeding pipe 202, thereby compressing the spring sheet 303. When the vertical surface of the clamp ring 306 moves into the rotating clamp arm 302, After the head of the spring sheet 303 is released, the spring sheet 303 is pushed outward under the reaction force of the spring sheet 303, and then the head of the rotating clamp arm 302 can be moved toward the direction of the feeding tube 202, and then the rotating clamp arm 302 can be clamped on the outside of the clamp ring 306, so that the installation of the connecting tube 305 can be completed. When removing the connecting tube 305, it is only necessary to press the tail of the rotating clamp arm 302 toward the middle, so that the head of the rotating clamp arm 302 is expanded outward, and then the clamping ring 306 and the head of the rotating clamp arm 302 can be released; After the connecting pipe 305 is installed on the path switching mechanism 2, the connection between the feeding channel 401 and the path switching mechanism 2 is completed, the vacuum pump 8 is started, and the input end of the vacuum pump 8 is evacuated to evacuate the air inside the powder temporary storage tank 402 through the multi-way pipe 406 and the exhaust hose 405, and then the air inside the powder temporary storage tank 402 can be evacuated. At this time, suction is generated inside the powder temporary storage tank 402 and is transmitted into the path switching mechanism 2 through the feeding channel 401. At this time, if the path switching of the path switching mechanism 2 is completed, the powder inside the storage tank 5 can be sucked into the powder temporary storage tank 402. At this time, the solenoid valve 403 is opened, and the powder can be discharged through the discharge pipe 404; After the vacuum pump 8 is started, the output end passes the gas into the storage tank 5 through the exhaust hose 9, so that the air pressure inside the storage tank 5 increases, so that the powder inside the storage tank 5 can be pressurized and then prevented from being blocked. When the air pressure inside the storage tank 5 increases, when the air pressure inside the storage tank 5 is too large, the inner plug 706 will be pushed to move upward. When the exhaust hole 707 moves to the outside of the vent pipe 702, the gas will enter the inner plug 706 through the air inlet hole 708 and be discharged through the exhaust hole 707. As the inner plug 706 rises, the top cover 709 can be driven to move upward, and then the tension spring 710 can be stretched. When the gas is discharged, the air pressure inside the storage tank 5 drops. At this time, the top cover 709 is pulled downward under the action of the tension spring 710, and then the inner plug 706 can be driven to move downward, and the exhaust hole 707 is blocked again.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A powder conveying path switching and unblocking linkage device, comprising a mounting frame (1), characterized in that: A path switching mechanism (2) is fixedly arranged at the bottom of the inner side of the mounting frame (1), a splicing mounting mechanism (3) is arranged outside the path switching mechanism (2), a powder extraction mechanism (4) is arranged at one end of the splicing mounting mechanism (3) away from the path switching mechanism (2), a storage tank (5) is fixedly connected to the top of the mounting frame (1), a sealing cover (6) is threadedly connected to the top of the storage tank (5), a gas pressure discharge mechanism (7) is arranged on the top of the sealing cover (6), the gas pressure discharge mechanism (7) discharges gas, a vacuum pump (8) is fixedly connected to the outside of the storage tank (5), an exhaust hose (9) is fixedly connected to the output end of the vacuum pump (8), and one end of the exhaust hose (9) away from the vacuum pump (8) is fixedly connected to the inside of the sealing cover (6) and penetrates through it, the path switching mechanism (2) is used to switch the powder conveying path, the vacuum pump (8) is turned on, and the air in the powder extraction mechanism (4) is extracted by the input end of the vacuum pump (8), at which time suction is generated in the powder extraction mechanism (4) to convey the powder.

2. A powder conveying path switching and dredging linkage device according to claim 1, characterized in that: The path switching mechanism (2) comprises a housing (201), the exterior of the housing (201) being fixedly connected to the inner bottom of the mounting frame (1), a plurality of feed pipes (202) being fixedly connected to the exterior of the housing (201), a return spring (203) being provided inside the feed pipe (202), a blocking sleeve (204) being slidably connected inside the feed pipe (202), a fixing frame (205) being fixedly connected to the inner side of the blocking sleeve (204), a movable rod (206) being fixedly connected to a side of the fixing frame (205) away from the return spring (203), and a conical head (207) being fixedly connected to an end of the movable rod (206) away from the fixing frame (205). The outer circumference of the feed pipe (202) is provided with a plurality of feed grooves (208); the top of the housing (201) is rotatably connected to a discharge pipe (209); the bottom of the discharge pipe (209) is fixedly connected to a mounting tube (210); a push spring (211) is provided inside the mounting tube (210); a movable sleeve (212) is slidably connected inside the mounting tube (210); an end of the movable sleeve (212) away from the push spring (211) is fixedly connected to a connecting column (213); an end of the connecting column (213) away from the movable sleeve (212) is fixedly connected to a conical head 2 (214); and a discharge groove (215) is provided outside the mounting tube (210).

3. A powder conveying path switching and dredging linkage device according to claim 1, characterized in that: The splicing installation mechanism (3) comprises an installation sleeve (301), the inner side of which is slidably connected to the outside of the feed pipe (202), the outside of which is rotatably connected to a rotating clamp arm (302), the bottom of which is close to the outer shell (201) of the rotating clamp arm (302) is fixedly connected to a spring (303), the bottom of which is fixedly connected to the outside of the installation sleeve (301), the side of which is close to the outer shell (201) of the installation sleeve (301) is fixedly connected to a tension spring 1 (304), the end of which is away from the installation sleeve (301) is fixedly connected to the outside of the outer shell (201), a connecting tube (305) is arranged inside the installation sleeve (301), the outside of which is fixedly connected to a clamp ring (306), and the clamp ring (306) is engaged with the rotating clamp arm (302).

4. A powder conveying path switching and dredging linkage device according to claim 3, characterized in that: The powder extraction mechanism (4) comprises a plurality of material delivery channels (401), one end of the plurality of material delivery channels (401) close to the housing (201) is fixedly connected to one end of the plurality of connecting tubes (305) away from the housing (201), one end of the material delivery channels (401) away from the connecting tubes (305) is fixedly connected to a powder temporary storage tank (402), a solenoid valve (403) is fixedly connected to the bottom of the powder temporary storage tank (402), a discharge pipe (404) is fixedly connected to the bottom of the solenoid valve (403), an exhaust hose (405) is fixedly connected to the top of the powder temporary storage tank (402), an input end of the vacuum pump (8) is fixedly connected to a multi-way pipe (406), and one end of the plurality of exhaust hoses (405) away from the powder temporary storage tank (402) is fixedly connected to the outside of the multi-way pipe (406).

5. The powder conveying path switching and unblocking linkage device according to claim 1, characterized in that: The air pressure discharge mechanism (7) comprises a mounting ring (701), the bottom of the mounting ring (701) is fixedly connected to the top of the sealing cover (6), the middle of the mounting ring (701) is fixedly connected to a ventilation pipe (702), the outside of the mounting ring (701) is fixedly connected to a plurality of outer rods (703), the inside of the outer rods (703) is slidably connected to a movable limit block (704), the top of the movable limit block (704) is fixedly connected to an inner rod (705), the inside of the ventilation pipe (702) is slidably connected to the inner rod (705), the inner An inner plug (706) is connected, a plurality of exhaust holes (707) are provided on the outer wall of the inner plug (706), an air inlet hole (708) is provided at the bottom of the inner plug (706), a top cover (709) is fixedly connected to the top of the air inlet hole (708), the tops of the plurality of inner rods (705) are fixedly connected to the outside of the top cover (709), a second tension spring (710) is fixedly connected to the bottom of the top cover (709), and the bottom of the second tension spring (710) is fixedly connected to the top of the mounting ring (701).

6. A powder conveying path switching and dredging linkage device according to claim 2, characterized in that: The outside of the discharge pipe (209) is fixedly connected to a rotating frame (216), and the top of the discharge pipe (209) is rotatably connected to the bottom of the storage tank (5).

7. A powder conveying path switching and dredging linkage device according to claim 2, characterized in that: The bottom of the discharge pipe (209) is connected to the discharge trough (215), and the top of the discharge pipe (209) passes through the bottom of the storage tank (5).

8. A powder conveying path switching and unblocking linkage device according to claim 3, characterized in that: The tension spring 1 (304) is sleeved on the outside of the feed pipe (202), and the outside of the connecting pipe (305) is sleeved with a sealing sleeve.

9. A powder conveying path switching and dredging linkage device according to claim 5, characterized in that: The second tension spring (710) is sleeved on the outside of the ventilation pipe (702), and the inner rod (705) passes through the top of the outer rod (703).

10. A powder conveying path switching and unblocking linkage device according to claim 5, characterized in that: The bottom of the ventilation pipe (702) passes through the top of the sealing cover (6), and a sealing gasket is provided on the inner wall of the ventilation pipe (702).

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