Bucket elevator for killing insects through cold smoke smoking

Abstract

The invention relates to a bucket elevator for killing insects through cold smoke smoking. One side of the sealing cover is rotationally assembled on one side of the outlet through a hinge shaft, and the hinge shaft is sleeved with a torsional spring so as to provide elastic acting force for the sealing cover to block the outlet. The locking mechanism comprises a bolt arranged on the sealing cover and a lock sleeve arranged on the elevator body, an opening is formed in the end, facing the bolt, of the lock sleeve so that the bolt can be inserted, the bolt is provided with a protruding blocking table, a lock pin matched with the blocking table in a blocking mode is arranged on the lock sleeve in the radial direction, and when the sealing cover is opened, the bolt is inserted into the lock sleeve, and the lock pin is matched with the blocking table in a blocking mode. The cover closing mechanism comprises a sliding rod assembled on the elevator body in a sliding mode, the outer end of the sliding rod is connected with a pull rope, and the pull rope is connected with the lock pin in the axis direction of the lock pin after bypassing the pulley. When the inner pipe moves at the bottom of the elevator body, the sliding rod can be pushed to move so that the pull rope can pull the pull pin outwards, and the sealing cover resets through the torsional spring to close the outlet. The outlet can be automatically closed when the inner pipe is inserted, and insecticide is prevented from escaping.

Description

Technical Field

[0001] This invention relates to a bucket elevator that uses cold smoke fumigation to kill insects. Background Technology

[0002] Bucket elevators are commonly used in grain storage and processing. They consist of buckets, a conveyor belt (or traction chain), a casing, and inlet / outlet ports. Their structure contains numerous gaps and dead angles (such as the connection between the buckets and the conveyor belt, corners of the casing, and bottom accumulation areas). During grain transport, small amounts of grain particles, debris, and dust can remain in these areas, creating breeding grounds for pests. Even after the machine stops, the remaining grain can still provide food and a habitat for pests (such as corn weevils, rice weevils, and grain borers). If left untreated, these pests will multiply rapidly and contaminate new grain when the equipment is restarted.

[0003] For better and more efficient insecticidal effects, more and more users are choosing deltamethrin as an insecticide. It has good control effects on grain pests, storage pests, agricultural pests, and sanitary pests, especially chewing and piercing-sucking pests. It can quickly control the number of pests and reduce crop or grain losses. Deltamethrin has extremely high insecticidal activity and only requires a very low concentration to be effective. The dosage is much lower than that of traditional insecticides such as organophosphates and carbamates, which can reduce the risk of pesticide residues. Moreover, it mainly acts by contact, and pests will become paralyzed and convulsed within minutes to hours after contact with the pesticide, eventually dying. It quickly stops their feeding and reproductive behaviors, reduces the duration of damage, and has a long residual effect, which can reduce the number of times the pesticide is used.

[0004] However, due to the extremely poor volatility of deltamethrin and its easy decomposition at high temperatures, traditional high-temperature fumigation and steaming methods are unusable. To address this issue, Chinese Patent CN119325963A discloses a cold-generating fumigation chamber. This chamber utilizes a reaction chamber to create pressurized smoke accumulation and controls the oxygen intake, achieving low-temperature volatilization of deltamethrin. When the smoke exits through the chamber's outlet, it possesses a certain initial velocity, allowing it to quickly rise to the top of the space, forming a mushroom cloud-like vaporization cloud. The smoke gradually fills the entire roof, and subsequently, the deltamethrin dust within the smoke settles under its own weight. This cold-generating fumigation chamber could be considered for rapid insect control using bucket elevators.

[0005] In response, the applicant of this application proposed a method that uses a cold-generating fumigation can to emit deltamethrin smoke, and sends the smoke into the bucket elevator through a smoke delivery pipe, so that the deltamethrin smoke fills the inner cavity of the bucket elevator from bottom to top to kill insects in the inner cavity. However, since the bucket elevator has a lower inlet and an upper opening, the lower inlet can be connected to the smoke delivery pipe to achieve a seal, but sealing the upper outlet is more troublesome. This is because the bucket elevator is very tall, and the bucket elevator used in grain silos can reach up to 90 meters high. Moreover, it is generally set up close to the grain silo, making it inconvenient to climb.

[0006] Therefore, it would be of great significance if the outlet could be automatically closed when the bucket elevator is used for pest control, and then easily opened when the pest control is completed and the bucket elevator is in use. Summary of the Invention

[0007] The purpose of this invention is to provide a bucket elevator that uses cold smoke fumigation to kill insects. Before inserting the smoke delivery pipe for insect killing, the inner tube triggers the transmission mechanism to close the outlet of the bucket elevator. After the insect disinfecting is completed and the bucket elevator is in use, the outlet can be easily opened to facilitate the normal use of the bucket elevator.

[0008] The technical solution of the present invention is as follows: A bucket elevator that uses cold smoke fumigation to kill insects, comprising: Cold-smoke fumigation canister, used to disperse deltamethrin fumes; The hoist body includes an inlet at the bottom and an outlet at the top; A smoke generating box, wherein the cold smoke generating fumigation canister is installed inside the smoke generating box; The smoke supply pipe includes an inner pipe and an outer pipe that are nested together. The first end of the inner pipe and the outer pipe are connected to the smoke generating box. The second end of the outer pipe is connected to the inlet. The second end of the inner pipe extends out from the second end of the outer pipe and extends to the bottom of the elevator body. The second end of the inner pipe is provided with multiple smoke distribution ports. A cap is rotatably mounted on one side of the outlet via a hinge shaft, and a torsion spring is fitted at the hinge shaft to provide an elastic force to the cap toward blocking the outlet. The locking mechanism includes a pin on the cover and a locking sleeve on the hoist body. The locking sleeve has an opening at one end facing the pin for the pin to be inserted. The pin has an outwardly protruding stop, and the locking sleeve has a locking pin that cooperates with the stop in the radial direction. When the cover is opened, the pin is inserted into the locking sleeve, and the locking pin cooperates with the stop. The closing mechanism includes a slide rod that is slidably mounted on the body of the hoist. The outer end of the slide rod is connected to a pull rope, which passes around a pulley and is connected to the locking pin along the axial direction of the locking pin. When the inner tube moves at the bottom of the hoist body, it can push the slide bar to move so that the locking pin can be pulled outward by the pull rope. The cover is reset by the torsion spring to close the outlet.

[0009] The beneficial effects of this technical solution are as follows: When using the bucket elevator for pest control, first stop conveying materials, empty the bucket elevator, and then shut it down. Next, connect the smoke generating box containing the cold-smoke fumigation canister to the inlet of the bucket elevator via the smoke delivery pipe. The outer casing connects to the inlet, while the inner casing enters the bucket elevator from the inlet and moves forward at the bottom. When the inner casing reaches its front end and contacts the inner end of the sliding rod, it pushes the sliding rod outward. As the sliding rod moves, it pulls the rope, which, after passing over the pulley, is pulled along the axis of the locking pin. The moving locking pin causes it to shift, and once it disengages from the stop on the latch, it loses its restraint on the latch. Under the action of the torsion spring of the cover, the cover rotates in the direction of closing the outlet, causing the latch to be pulled out of the locking sleeve. After the outlet is closed, the entire bucket elevator is in a closed state with the outside world. The bucket elevator can then be started for idling, and the cold smoke fumigation tank can be started to disperse deltamethrin dust into the bucket elevator to kill insects inside. After the insecticidal process is completed, the bucket elevator is turned off, the outer pipe is disconnected from the inlet, and the inner pipe is pulled out from the inlet. As can be seen from the above process, when the bucket elevator of this application is used for insecticidal purposes, the insertion of the inner tube not only allows the smoke to be distributed upwards from the bottom of the bucket elevator, but also allows the front end of the inner tube to push the sliding rod to automatically seal the outlet of the bucket elevator. This achieves insecticidal effect within the enclosed space of the bucket elevator, preventing deltamethrin smoke from escaping outside the bucket elevator. The entire process can automatically seal the outlet without requiring personnel to climb to the top of the bucket elevator, thus preventing personnel from forgetting to close the outlet and causing deltamethrin smoke to escape. This ensures that operators will not inhale deltamethrin smoke and suffer poisoning.

[0010] Based on the above solution, the following improvements are made: the rear end of the pin is hinged to the cover via a hinge shaft, and a spring sleeve is fitted on the pin. One end of the spring sleeve is connected to the cover, and the spring sleeve provides an elastic force to the pin to return to its original position in the direction perpendicular to the cover.

[0011] The beneficial effects of this technical solution are as follows: The pin and the cover are hinged because the cover drives the pin to rotate, while the locking sleeve is fixed in a horizontal position. The hinge of the pin ensures that the pin has the ability to move and rotate, so as to compensate for the angular deviation when the rotating motion is inserted into the fixed locking sleeve. However, in order to prevent the pin from deviating from the set position due to gravity, that is, to avoid the problem of the pin not being perpendicular to the cover and thus being unable to be inserted into the locking sleeve, a spring sleeve is set. This not only ensures that the pin has a certain angle of deflection, but also ensures that the pin can automatically return to a state perpendicular to the cover.

[0012] Based on the above scheme, the following improvements are made: the stop is a tapered structure with a diameter that increases from the front end to the rear end of the pin, and the front end of the locking pin has a ball head.

[0013] The beneficial effects of this technical solution are as follows: Since the pin needs to pass through the locking pin during the insertion of the bolt into the locking sleeve, setting the stop as a conical structure can achieve a guiding fit with the locking pin. That is, it ensures that when the pin is inserted into the locking sleeve, the conical surface of the stop can push the locking pin backward to avoid it. When it avoids and disengages from the stop, the locking pin is inserted into the end face of the stop to achieve a blocking fit with the stop. On the other hand, the conical structure of the stop can also have a guiding function when entering the locking sleeve, preventing the stop and the opening of the locking sleeve from getting stuck.

[0014] Based on the above solution, the following improvements are made: a first baffle is provided at the rear end of the locking pin, and a first tension spring is sleeved on the locking pin. One end of the first tension spring is connected to the first baffle and the other end is connected to the locking sleeve to provide an elastic force for the locking pin to move toward the locking sleeve.

[0015] The beneficial effects of this technical solution are as follows: By setting the first tension spring, the locking pin can automatically reset, so that it can automatically cooperate with the stop when the pin is inserted into the locking sleeve, thereby maintaining the open state of the cover.

[0016] Based on the above scheme, the following improvements are made: the inner end of the slide rod is provided with an inner baffle and the outer end is provided with an outer baffle. A second tension spring is provided between the outer baffle and the hoist body. The second tension spring is sleeved on the slide rod. One end of the second tension spring is connected to the outer baffle and the other end is connected to the hoist body. The pull rope is connected to the outer baffle along the axial direction of the slide rod.

[0017] The beneficial effects of this technical solution are as follows: the inner baffle can be conveniently matched with the end of the inner tube; the outer baffle can be conveniently set up with the second tension spring and the pull rope can be conveniently pulled to move the slide rod; the second tension spring can be conveniently reset of the slide rod for use when killing insects again; and when the second tension spring drives the slide rod to reset, the other end of the pull rope loses its restriction on the locking pin, and the locking pin can be reset by the first tension spring.

[0018] Based on the above scheme, further improvements are made as follows, including a cover opening mechanism. The cover opening mechanism includes a winch mechanism located at the lower end of the exterior of the hoist body, and a cover opening pulley located at the upper end of the exterior of the hoist body. The cover is connected to a cover opening rope, which is wound around the winch mechanism after passing around the cover opening pulley.

[0019] The beneficial effects of this technical solution are as follows: With the setting of the opening mechanism, the sealing work can be completed at the bottom of the bucket elevator after the insecticidal work is completed, without the need to climb the bucket elevator.

[0020] Based on the above solution, the following improvements are made: the opening of the lock sleeve is a flared opening, and the front end of the pin has a chamfered structure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the internal structure of a bucket elevator using cold smoke fumigation for insecticidal purposes according to an embodiment of the present invention during use; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 2 A magnified view of a section at point B in the middle; Figure 4 for Figure 1 A magnified view of a section at point C; Figure 5 A cross-sectional view of the flue gas pipe at the inlet connection point with the bucket elevator; In the diagram: 1-Bucket elevator, 11-Elevator body, 111-Left chamber, 112-Right chamber, 113-Inlet, 114-Outlet, 115-Lower connecting channel, 116-Bottom plate, 12-Sprocket, 13-Traction chain, 14-Bucket, 2-Cold smoke-generating smoke chamber, 3-Smoke-generating box, 31-Smoke-generating chamber, 4-Smoke delivery pipe, 41-Inner pipe, 411-First end of inner pipe, 412-Second end of inner pipe, 4121-Smoke distribution port, 4122-Electromagnet, 4123-Wire, 42-Outer pipe, 44- Square flange, 441-positioning support rod, 5-controller, 6-cover, 61-hinge shaft, 62-torsion spring, 7-pin, 71-stop, 72-spring sleeve, 73-beveled structure, 8-lock sleeve, 81-locking pin, 811-ball head, 812-first baffle, 813-first tension spring, 9-slide rod, 91-inner baffle, 92-outer baffle, 93-second tension spring, 10-pull rope, 20-upper pulley, 30-lower pulley, 40-hoisting mechanism, 401-handle, 50-opening pulley, 60-opening pull rope. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention; that is, the described embodiments are merely some embodiments of the invention, and not all embodiments. The components of the embodiments of the invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0024] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0025] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0026] A specific embodiment of the bucket elevator of the present invention that uses cold smoke fumigation for insecticidal purposes: as follows Figure 1-5 As shown, the bucket elevator 1, which uses cold smoke fumigation to kill insects, includes an elevator body 11, a smoke generating box 3, a smoke delivery pipe 4, a sealing cover 6, a locking mechanism, a closing mechanism, and an opening mechanism.

[0027] Among them, the cold-smoke fumigation canister 2 is used to disperse deltamethrin dust, and its structural principle is based on the patent with publication number CN119325963A.

[0028] like Figure 1 As shown, the smoke generating box 3 includes a smoke generating chamber 31, and a cold-smoking canister 2 is disposed inside the smoke generating chamber 31. The smoke generating chamber 31 has a smoke outlet communicating with the outside. The smoke generating box 3 is equipped with an ignition device, which includes a power supply, a control circuit, a control switch, and an electrical connector. The electrical connector is connected to the power supply connector of the cold-smoking canister 2, and the cold-smoking canister 2 is ignited by turning on the control switch. The smoke generating box 3 is equipped with a controller 5, which is connected to an electromagnet 4122 via a wire 4123 to control the energization and de-energization of the electromagnet 4122. A smoke box flange is provided at the smoke outlet, and the smoke supply pipe 4 includes a smoke pipe flange, which includes a flange ring, an outer ring, and an inner ring arranged in sequence. The inner and outer rings are connected by at least two connecting rods. The first end 411 of the inner pipe is connected to the inner ring, and the first end of the outer pipe 42 is connected to the outer ring. The flange ring and the smoke box flange are connected by bolts. The above settings not only facilitate the detachable connection between the smoke outlet and the smoke supply pipe 4, but also ensure that the deltamethrin dust gushing from the smoke outlet enters the inner pipe 41 and the outer pipe 42 as evenly as possible.

[0029] The smoke delivery pipe 4 includes an inner pipe 41 and an outer pipe 42 nested together. The first end 411 of the inner pipe is flush with the first end of the outer pipe 42 and is connected to the smoke outlet. The second end extends a certain length from the second end of the outer pipe 42. The second end of the outer pipe 42 is used to connect to the inlet 113 of the bucket elevator 1. The second end 412 of the inner pipe is used to be inserted from the inlet 113 of the bucket elevator 1 to extend into the connecting channel 115 at the lower part of the left and right chambers of the bucket elevator 1. The inner pipe 41 is a flexible tube. Multiple smoke distribution ports 4121 are spaced apart along the length of the upper side of the second end 412 of the inner pipe. Each smoke distribution port 4121 covers the connecting channel 115 at the lower part of the left and right chambers of the bucket elevator 1. Multiple electromagnets 4122 are spaced apart along the length of the lower side of the second end 412 of the inner pipe so that when energized, the second end 412 of the inner pipe can be attracted to the bottom plate 116 of the bucket elevator 1. The second end of the outer tube 42 is connected to a square flange 44, which is bolted to the inlet flange of the bucket elevator 1. Multiple positioning support rods 441 are provided on the inner wall of the square flange 44 to support and position the inner tube 41. A permanent magnet is provided on the side wall of the second end 412 of the inner tube in the area below the inlet 113 of the bucket elevator 1, so that the corresponding section of the inner tube 41 can be attracted to the corresponding side wall. By providing the permanent magnet, the vertical part of the inner tube 41 can be attracted to the side wall of the area below the inlet 113 of the bucket elevator 1, avoiding interference with the operating bucket 14.

[0030] In use, the cold-smoke fumigation canister 2 is installed inside the smoke-generating chamber 31 of the smoke-generating box 3. The smoke delivery pipe 4 is connected to the smoke outlet, and the second end 412 of its inner tube is inserted into the inlet 113 of the bucket elevator 1, which is to be used for insecticidal purposes. The inner tube 41 is ensured to move along the connecting channel at the bottom of the left and right chambers. After it is in place, the second end of the outer tube 42 is connected to the inlet 113 of the bucket elevator 1. Then, the outlet 114 of the bucket elevator 1 is sealed (the specific sealing method is a major improvement of this application, see below). The electromagnet 4122 is energized, causing it to adhere to the bottom plate 116 of the bucket elevator 1. At this time, each smoke outlet 4121 is facing upwards. Then, the bucket elevator 1 is started for idling, and the cold-smoke fumigation canister 2 is ignited. The deltamethrin dust released from it flows into the smoke delivery pipe 4 in a smoke-like manner, entering the inner tube 41 and the outer tube 42 respectively. Dust in the outer tube 42 enters the left chamber 111 of the bucket elevator 1 through the inlet 113 and flows upward. Dust in the inner tube 41 flows out from the smoke outlets 4121 at its second end. Due to the action of the electromagnet 4122, the soft inner tube 41 is tightly attached to the bottom plate 116 of the bucket elevator 1 so that the dust is dispersed upward from the bottom plate 116. This ensures that the deltamethrin dust can also come into contact with the lower connecting channel of the left and right chambers and all parts of the right chamber 112. At the same time, since the bucket elevator 1 is in an idling state, the positions of its traction chain 13 and buckets 14 are changing, which can ensure that the deltamethrin dust can come into contact with each bucket 14 and traction chain 13 more evenly. Moreover, the running buckets 14 and traction chain 13 will also drive the deltamethrin dust in the left and right chambers to flow along, similar to a stirring effect, further improving the uniformity of distribution. As can be seen from the above process, the electromagnet 4122 of the inner tube 41 in this scheme can adsorb the second end 412 of the inner tube, which is located in the lower connecting channel of the bucket elevator 1, onto the bottom plate 116. This allows the dust sprayed from the smoke outlet 4121 to diffuse upwards from the bottom plate 116, ensuring that the connecting channel, especially the area of ​​the bottom plate 116, is covered with dust. On the other hand, since the bucket elevator 1 needs to operate, the adsorption of the inner tube 41 onto the bottom plate 116 can prevent it from colliding with the operating bucket 14.In the prior art, deltamethrin dust enters directly from the inlet 113 of the bucket elevator 1. Since deltamethrin dust disperses upwards, only a portion of the upper part of the left chamber 111 and the left and right chambers 112 of the bucket elevator 1 comes into contact with the deltamethrin dust. Due to its strong adsorption properties, the deltamethrin dust adheres to the surface of the object it first comes into contact with, which leads to excessive accumulation in the left chamber 111, wasting the deltamethrin dust. Furthermore, because deltamethrin dust is relatively expensive, it is impossible to introduce large quantities to diffuse it to other areas and ensure that the dosage in other areas is sufficient to kill insects. The solution of this application can, under the premise of limited deltamethrin dust, make it as evenly distributed as possible during the first dispersion, so that the deltamethrin dust is more evenly adsorbed and distributed in the bucket elevator 1.

[0031] like Figure 1 As shown, one side of the cover 6 is rotatably mounted on the side of the outlet of the bucket elevator via a hinge shaft 61. A torsion spring 62 is sleeved on the hinge shaft 61 to provide an elastic force to the cover 6 toward the sealing outlet. An elastic strip is provided on the upper surface of the cover 6 corresponding to the edge of the outlet to improve the sealing performance of the connection.

[0032] The locking mechanism includes a pin 7 on the cover 6 and a locking sleeve 8 on the hoist body. The locking sleeve 8 has an opening at one end facing the pin 7 for insertion. The pin 7 has a protruding stop 71, and the locking sleeve 8 has a radially arranged locking pin 81 that engages with the stop 71. When the cover 6 is opened, the pin 7 is inserted into the locking sleeve 8, and the locking pin 81 engages with the stop 71. Figure 3 As shown, the rear end of the pin 7 is hinged to the cover 6 via a hinge shaft 61. A spring sleeve 72 is fitted onto the pin 7, with one end of the spring sleeve 72 connected to the cover 6. The spring sleeve 72 provides an elastic force to the pin 7 to return to its original position perpendicular to the cover 6. The pin 7 is hinged to the cover 6 because the cover 6 drives the pin 7 to rotate, while the lock sleeve 8 is fixed in a horizontal position. The hinge of the pin 7 ensures that the pin 7 has the ability to move and rotate, so as to compensate for the angular deviation when the rotating motion is inserted into the fixed lock sleeve 8. However, in order to prevent the pin 7 from deviating from the set position due to gravity, that is, to avoid the problem that the pin 7 cannot be inserted into the lock sleeve 8 due to not being perpendicular to the cover 6, the spring sleeve 72 is provided. This not only ensures that the pin 7 has a certain angle of deflection, but also ensures that the pin 7 can automatically return to a state perpendicular to the cover 6.

[0033] The stop 71 is a tapered structure with a diameter that increases from the front end to the rear end of the pin 7, and the front end of the locking pin 81 has a ball head 811. Since the pin 7 needs to pass through the locking pin 81 during the insertion of the pin 7 into the locking sleeve 8, setting the stop 71 as a tapered structure can achieve a guiding engagement with the locking pin 81. That is, when the pin 7 is inserted into the locking sleeve 8, the tapered surface of the stop 71 can push the locking pin 81 backward to avoid it. When it avoids and disengages from the stop 71, the locking pin 81 is inserted into the end face of the stop 71 to achieve a blocking engagement with the stop 71. On the other hand, the tapered structure of the stop 71 can also have a guiding function when entering the locking sleeve 8, preventing the stop 71 from getting stuck in the opening of the locking sleeve 8.

[0034] A first baffle 812 is provided at the rear end of the locking pin 81, and a first tension spring 813 is fitted on the locking pin 81. One end of the first tension spring 813 is connected to the first baffle 812, and the other end is connected to the locking sleeve 8, so as to provide an elastic force for the locking pin 81 to move toward the locking sleeve 8. The first tension spring 813 enables the locking pin 81 to automatically reset, so as to automatically achieve a blocking engagement with the stop 71 when the pin 7 is inserted into the locking sleeve 8, thereby maintaining the open state of the cover 6. The opening of the locking sleeve 8 is a flared opening, and the front end of the pin 7 has a chamfered structure 73.

[0035] like Figure 4 As shown, the closing mechanism includes a slide rod 9 slidably mounted on the hoist body. A pull rope 10 is connected to the outer end of the slide rod 9. The pull rope 10 passes over a pulley and is connected to the locking pin 81 along the axial direction of the locking pin 81. Figure 3 , 4 As shown, the pulley system includes an upper pulley 20 and a lower pulley 30, which guide the pull rope 10. The inner end of the slide rod 9 has an inner baffle 91, and the outer end has an outer baffle 92. A second tension spring 93 is provided between the outer baffle 92 and the elevator body. The second tension spring 93 is sleeved on the slide rod 9, with one end connected to the outer baffle 92 and the other end connected to the elevator body. The pull rope 10 is connected to the outer baffle 92 along the axial direction of the slide rod 9. The inner baffle 91 facilitates abutment against the end of the inner tube, while the outer baffle 92 facilitates the placement of the second tension spring 93 and allows the pull rope 10 to pull the slide rod 9. The second tension spring 93 facilitates the reset of the slide rod 9 for use during subsequent insecticidal treatment. When the second tension spring 93 resets the slide rod 9, the other end of the pull rope 10 loses its restraint on the locking pin 81, allowing the locking pin 81 to reset using the first tension spring 813.

[0036] like Figure 3 , 4As shown, the opening mechanism includes a winch mechanism 40 located at the lower end of the bucket elevator body. The winch mechanism 40 includes a winch drum and a crank 401 coaxially connected to the winch drum. The winch drum can be manually rotated. In other embodiments, the crank 401 can be replaced by a motor. An opening pulley 50 is provided at the upper end of the bucket elevator body. The cover 6 is connected to an opening rope 60, which winds around the opening pulley 50 and onto the winch mechanism 40. With the opening mechanism, the cover 6 can be opened from below the bucket elevator after insecticidal treatment, without having to climb the bucket elevator.

[0037] When the inner tube moves at the bottom of the hoist body, it can push the slide bar 9 to move so that the locking pin 81 can be pulled outward by the pull rope 10. The cover 6 is reset by the torsion spring 62 to close the outlet.

[0038] When using the bucket elevator for pest control, first stop conveying materials, empty the bucket elevator, and then turn it off. Next, connect the smoke generating box (containing the cold-smoke fumigation can) to the inlet of the bucket elevator via the smoke delivery pipe. The outer casing connects to the inlet, while the inner casing enters the bucket elevator from the inlet and moves forward at the bottom. When the inner casing reaches its front end and contacts the inner end of the slide bar 9, it pushes the slide bar 9 outward. As the slide bar 9 moves, it pulls the pull rope 10. The pull rope 10 passes around the pulley and pulls the locking pin 81 along its axis, thus driving the locking pin 81... After the displacement and disengagement of the locking pin 81 from the stop 71 on the latch 7, the locking pin 81 loses its restraint on the latch 7. Under the action of the torsion spring 62 of the cover 6, the cover 6 rotates in the direction of closing the outlet, causing the latch 7 to be pulled out of the locking sleeve 8. After the outlet is closed, the entire bucket elevator is in a closed state with the outside world. The bucket elevator can then be started for idling, and the cold smoke fumigation tank can be started to disperse deltamethrin dust into the bucket elevator to kill insects inside the bucket elevator. After the insects are killed, the bucket elevator is turned off, the outer pipe 42 is disengaged from the inlet, and the inner pipe is pulled out from the inlet. As can be seen from the above process, when the bucket elevator of this application is used for insecticidal purposes, the insertion of the inner tube not only allows the smoke to be spread upwards from the bottom of the bucket elevator, but also allows the front end of the inner tube to push the slide rod 9 to automatically seal the outlet of the bucket elevator. This achieves insecticidal effect within the enclosed space of the bucket elevator, preventing deltamethrin smoke from escaping outside the bucket elevator. The entire process can automatically seal the outlet without requiring personnel to climb to the top of the bucket elevator, thus preventing personnel from forgetting to close the outlet and causing deltamethrin smoke to escape. This ensures that operators will not inhale deltamethrin smoke and suffer poisoning.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present invention shall also be included within the scope of protection of the present invention.

Claims

1. A bucket elevator that uses cold smoke fumigation to kill insects, comprising: Cold-smoke fumigation canister, used to disperse deltamethrin fumes; The hoist body includes an inlet at the bottom and an outlet at the top; Its characteristic is that it further includes: A smoke generating box, wherein the cold smoke generating fumigation canister is installed inside the smoke generating box; The smoke supply pipe includes an inner pipe and an outer pipe that are nested together. The first end of the inner pipe and the outer pipe are connected to the smoke generating box. The second end of the outer pipe is connected to the inlet. The second end of the inner pipe extends out from the second end of the outer pipe and extends to the bottom of the elevator body. The second end of the inner pipe is provided with multiple smoke distribution ports. A cap is rotatably mounted on one side of the outlet via a hinge shaft, and a torsion spring is fitted at the hinge shaft to provide an elastic force to the cap toward blocking the outlet. The locking mechanism includes a pin on the cover and a locking sleeve on the hoist body. The locking sleeve has an opening at one end facing the pin for the pin to be inserted. The pin has an outwardly protruding stop, and the locking sleeve has a locking pin that cooperates with the stop in the radial direction. When the cover is opened, the pin is inserted into the locking sleeve, and the locking pin cooperates with the stop. The closing mechanism includes a slide rod that is slidably mounted on the body of the hoist. The outer end of the slide rod is connected to a pull rope, which passes around a pulley and is connected to the locking pin along the axial direction of the locking pin. When the inner tube moves at the bottom of the hoist body, it can push the slide bar to move so that the locking pin can be pulled outward by the pull rope. The cover is reset by the torsion spring to close the outlet.

2. The bucket elevator for insecticidal fumigation according to claim 1, characterized in that, The rear end of the pin is hinged to the cover via a hinge shaft. A spring sleeve is fitted on the pin, with one end of the spring sleeve connected to the cover. The spring sleeve provides an elastic force to the pin to return to its original position in a direction perpendicular to the cover.

3. A bucket elevator for insecticidal fumigation according to claim 1, characterized in that, The stop is a tapered structure with a diameter that increases from the front end to the rear end of the pin, and the front end of the locking pin has a ball head.

4. A bucket elevator for insecticidal fumigation according to claim 1, characterized in that, The rear end of the locking pin is provided with a first baffle, and a first tension spring is sleeved on the locking pin. One end of the first tension spring is connected to the first baffle and the other end is connected to the locking sleeve to provide an elastic force for the locking pin to move toward the locking sleeve.

5. A bucket elevator for insecticidal fumigation according to claim 1, characterized in that, The inner end of the slide rod is provided with an inner baffle and the outer end is provided with an outer baffle. A second tension spring is provided between the outer baffle and the hoist body. The second tension spring is sleeved on the slide rod. One end of the second tension spring is connected to the outer baffle and the other end is connected to the hoist body. The pull rope is connected to the outer baffle along the axial direction of the slide rod.

6. A bucket elevator for insecticidal fumigation according to claim 1, characterized in that, The device includes a cover opening mechanism, which includes a winch mechanism located at the lower end of the exterior of the hoist body. A cover opening pulley is located at the upper end of the exterior of the hoist body. The cover is connected to a cover opening rope, which is wound around the winch mechanism after passing around the cover opening pulley.

7. A bucket elevator for insecticidal fumigation according to claim 1, characterized in that, The opening of the lock sleeve is flared, and the front end of the pin has a chamfered structure.

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