An aluminum phosphide residue treatment device

Abstract

The application relates to the technical field of grain storehouse insecticide treatment, and particularly discloses a phosphorized aluminum residue treatment device, which comprises a sleeve, a feeding pipe is arranged at the upper end of the sleeve, a plurality of air holes are uniformly arranged on the sleeve, a spiral blade is arranged in the sleeve, a conveying rod is arranged in the sleeve, a plurality of accommodating grooves are arranged in the circumferential direction of the conveying rod, and a spiral sleeve is arranged on the conveying rod; a collecting cylinder is coaxially arranged at the lower end of the conveying rod, a circular hole is arranged in the middle of the collecting cylinder, a pressing handle is arranged on the upper end of the conveying rod, a cleaning ring is arranged on the sleeve below the pressing handle, and a scraping piece is arranged on the inner wall of the cleaning ring; after the conveying rod enters into the sleeve, the conveying rod can rotate downwards under the cooperation between the spiral blade and the spiral sleeve, so that the gas generated by the volatilization of the pelletized phosphorized aluminum is uniformly dispersed, the phosphorized aluminum is isolated from the grain, the phosphorized aluminum residue after volatilization is conveniently collected, and the situation that the phosphorized aluminum cannot be treated after being volatilized and remaining in the grain is solved.

Description

Technical Field

[0001] This invention relates to the field of grain storage pest control technology, specifically to an aluminum phosphide residue treatment device. Background Technology

[0002] When pest infestation in grains (including finished grains, raw grains, oilseeds, dried sweet potatoes, seed grains, etc.) reaches a certain level, under sealed conditions, a certain amount of aluminum phosphide, calcium phosphide, zinc phosphide, dichlorvos, and other pesticides are buried in the grain pile. The above-mentioned phosphides absorb moisture from the gaps in the grain pile and the grain, producing a chemical reaction that releases highly toxic phosphine gas, thereby killing various pests and insect eggs in the grain pile.

[0003] Common grain fumigation methods typically use pellet aluminum phosphide, which is inserted into the grain pile through a tube and a rod. The tube is about 1 to 3 meters long, and the rod is located inside the tube. After removing the rod, the tube becomes hollow, and then the pellet aluminum phosphide is dropped into the grain pile to fumigate the grain.

[0004] A search revealed a patent with authorization announcement number CN220140641U, which discloses a grain fumigation ring dosing device. The device includes a support frame, a rotating rod rotatably connected to the upper part of the support frame, a wire roller fixedly connected to the middle of the rotating rod, a steel wire rope arranged around the outer periphery of the wire roller, a cap at the lower end of the steel wire rope, a medicine tube threadedly connected to the lower part of the cap, a cone head threadedly connected to the bottom of the medicine tube, and multiple evenly distributed oblique holes on the upper outer periphery of the medicine tube. A base plate is fixedly connected to the bottom of the support frame, a lifting port is provided in the middle of the base plate, a cross-shaped fixing rod is fixedly connected to the inner side of the cone head, and a limit rod is fixedly connected to the middle of the support frame. The support frame, rotating rod, limit rod, and base plate are all made of galvanized material. This dosing device, through the combination of a rotating rod, wire roller, steel wire rope, tube cap, dosing tube, cone head, and oblique holes, achieves precise dosing without spatial limitations, providing environmentally friendly fumigation with zero pollution. However, this dosing device loads multiple pellet-shaped aluminum phosphide into the dosing tube. After the aluminum phosphide in the tube has volatilized, the tube needs to be removed from the grain. During removal, due to the oblique holes in the tube, aluminum phosphide residue can easily escape through the holes and come into contact with the grain. Furthermore, the residual gases from the aluminum phosphide residue can easily be inhaled by the human body, causing adverse effects. Therefore, an aluminum phosphide residue treatment device is proposed to solve the above-mentioned problems. Summary of the Invention

[0005] This invention provides an aluminum phosphide residue treatment device that can safely treat pellet-shaped aluminum phosphide residue during grain silo pest control operations, ensuring the effectiveness of grain silo pest control and preventing the pellet-shaped aluminum phosphide residue from causing food safety issues. At the same time, it can seal and collect the aluminum phosphide residue to prevent the residual aluminum phosphide gas from dissipating.

[0006] The aluminum phosphide residue treatment device of the present invention includes a sleeve inserted into the grain, a conveying pipe communicating with the inner cavity of the sleeve at the upper end of the sleeve, a plurality of vent holes for gas flow evenly provided on the sleeve, a spiral blade coaxially arranged inside the sleeve, a conveying rod inserted and installed inside the sleeve, the diameter of the conveying rod being adapted to the inner diameter of the inner cylinder, a spiral groove being formed circumferentially from top to bottom on the conveying rod, a plurality of receiving grooves being arranged at intervals in the spiral groove, and a spiral sleeve being provided on the conveying rod to cooperate with the spiral blade and drive the conveying rod to rotate;

[0007] A collection cylinder is coaxially arranged at the lower end of the conveyor rod. A circular hole with an outer diameter matching the spiral blade is opened in the middle of the collection cylinder. A pressure handle is inserted through and rotatably connected to the upper end of the conveyor rod. A cleaning ring is coaxially arranged inside the upper opening of the sleeve below the pressure handle and is slidably connected to the upper section of the conveyor rod. A scraper for treating the residue in the receiving tank is provided on the inner wall of the cleaning ring. The scraper moves along the spiral groove on the conveyor rod to scrape off the residue in the spiral groove and the receiving tank.

[0008] Preferably, the sleeve includes an outer cylinder, an inner cylinder, and an installation sleeve. The inner cylinder is rotatably disposed inside the outer cylinder, and the outer wall of the inner cylinder is in contact with the inner wall of the outer cylinder. The installation sleeve is coaxially connected to and communicates with the outer cylinder. The upper ends of both the outer cylinder and the inner cylinder are open. Several vent holes are evenly and symmetrically arranged on the inner cylinder and the outer cylinder. The material conveying pipe is fixed to one side of the installation sleeve and communicates with the inner cavity of the installation sleeve.

[0009] Preferably, the lower end of the spiral blade is fixedly connected to the inner cylinder, a guide groove is provided along the circumferential direction on the lower inner side of the outer cylinder, and a positioning post that slides in the guide groove is provided on the lower outer wall of the inner cylinder.

[0010] Preferably, the upper end face of the mounting sleeve is provided with a limiting groove adapted to the cleaning ring, and one or more sets of position locking mechanisms for limiting the cleaning ring are provided between the mounting sleeve and the cleaning ring.

[0011] Preferably, the position locking mechanism includes a pin, the outer end of which is provided with a limiting ring and the inner end of which is provided with an upward guide slope. The pin passes through the wall of the mounting sleeve and the guide slope is located in the inner cavity of the mounting sleeve. The outer wall of the cleaning ring is provided with a corresponding pin hole. A spring is sleeved on the surface of the pin between the outer wall of the mounting sleeve and the limiting ring. The two ends of the spring are fixed to the limiting ring and the outer wall of the mounting sleeve, respectively.

[0012] Preferably, the position locking mechanism includes two symmetrically arranged locking plates located within the limiting groove, a locking groove for cooperating with the locking plates is provided on the cleaning ring, two symmetrically arranged mounting cavities are provided within the limiting groove, and the locking plates are elastically disposed within the mounting cavities; the two symmetrically arranged mounting cavities are provided within the limiting groove, the locking plates are elastically disposed within the mounting cavities, and a locking connector is provided at the upper end of the locking plate, the cross-section of the locking connector being triangular.

[0013] Preferably, the snap-fit ​​connector has a first inclined surface and a second inclined surface, the inclination angle of the first inclined surface is greater than the inclination angle of the second inclined surface, and connecting rods are connected to both sides of the lower end of the snap-fit ​​plate. The connecting rods are located in the mounting cavity, and a torsion spring is fixedly connected between the connecting rods and the mounting cavity.

[0014] Preferably, the scraper includes a bristle bundle and a sponge sleeve disposed at the outer end of the bristle bundle. The outer end of the bristle bundle is bundled together and the inner end is freely dispersed. The outer diameter of the outer end of the bristle bundle is smaller than the width of the spiral groove. The length of the outer end of the bristle bundle is adapted to the depth of the spiral groove. After the sponge sleeve is placed on the outer end of the bristle bundle, the outer diameter is larger than the width of the spiral groove. The area of ​​the bristles at the inner end of the bristle bundle in their free state is larger than the area of ​​the receiving groove. The length of the bristles at the inner end of the bristle bundle in their free state is greater than the depth of the receiving groove. The outer end of the bristle bundle always moves along the spiral groove.

[0015] Preferably, the lower end of the cleaning ring is detachably provided with a ring cover plate, the outer diameter of the ring cover plate is adapted to the inner diameter of the inner cylinder, the lower end of the cleaning ring is provided with a snap-fit ​​groove, the upper surface of the ring cover plate is fixedly connected with a snap-fit ​​component that cooperates with the snap-fit ​​groove, the outer wall of the collecting cylinder is in contact with the inner wall of the inner cylinder, the collecting cylinder is provided with an annular storage cavity, the upper surface of the storage cavity is provided with an annular collection opening, and the side wall of the annular collection opening is provided with a protruding ring with its end face inclined inward.

[0016] Preferably, an installation ring is fixedly connected to the collecting cylinder. The installation ring is threaded to the lower end of the conveying rod, and the circumferential surface of the installation ring is flush with the conveying rod after the threaded connection. The inner surface of the installation ring is provided with an internal thread. The lower end of the conveying rod has a smaller outer diameter and is provided with an external thread. The installation ring is threadedly installed at the lower end of the conveying rod, and the circumferential surface is flush with the installation ring. The inner wall of the ring cover plate is provided with an internal thread, and the outer wall of the installation ring is provided with a corresponding external thread.

[0017] Beneficial effects:

[0018] 1. After the conveyor rod enters the sleeve, the cooperation between the spiral blade and the spiral sleeve allows the conveyor rod to rotate and move downwards. At the same time, after the receiving groove on the conveyor rod aligns with the conveying pipe, the pellet aluminum phosphide rolls into the receiving groove, achieving an even distribution of the pellet aluminum phosphide in the inner cylinder. This ensures that the gas generated by the volatilization of the pellet aluminum phosphide is evenly dispersed and the pellet aluminum phosphide is isolated from the grain, facilitating the collection of aluminum phosphide residue after volatilization. This solves the problem of the pellet aluminum phosphide remaining in the grain after volatilization and being difficult to handle. When the conveyor rod is removed from the sleeve, the scraper on the cleaning ring enters the receiving groove along the spiral groove, thereby cleaning the residue in the receiving groove and collecting it. This reduces the need for manual cleaning and effectively reduces the inhalation of harmful gases from the residue.

[0019] 2. During the descent of the conveyor rod, the conveyor rod will drive the inner cylinder to rotate at a certain angle through the spiral blades, so that the through hole on the outer cylinder corresponds to the through hole on the inner cylinder, so that the gas in the inner cylinder can be discharged from the through hole on the outer cylinder. During the ascent of the conveyor rod, the inner cylinder rotates at a certain angle again, so that the through hole on the outer cylinder is misaligned with the through hole on the inner cylinder, to prevent aluminum phosphide residue from flowing into the grain through the through hole on the inner cylinder.

[0020] 3. When the conveyor rod rises or falls, it rotates while the scraper remains stationary. The scraper passes through multiple receiving slots sequentially from the spiral groove to clean the aluminum phosphide residue in the receiving slots on the conveyor rod during the rising process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the processing device of the present invention;

[0022] Figure 2 This is a cross-sectional structural schematic diagram of the processing device of the present invention;

[0023] Figure 3 This is a schematic diagram of the transmission rod of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the spiral blade of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of the spiral sleeve of the present invention;

[0026] Figure 6 This is a schematic diagram of the mating structure between the outer insert and the inner insert of the present invention;

[0027] Figure 7 This is a first-view structural diagram of the cooperation between the cleaning ring and the ring cover plate of the present invention;

[0028] Figure 8 This is a second-view structural diagram of the cooperation between the cleaning ring and the ring cover plate of the present invention;

[0029] Figure 9 This is a schematic diagram of the structure of the bristle bundle of the present invention;

[0030] Figure 10 This is a schematic diagram of one embodiment of the locking mechanism of the present invention;

[0031] Figure 11 This is the present invention. Figure 10 Schematic diagram of the central pin column;

[0032] Figure 12 This is a schematic diagram of the structure of the collection tube of the present invention;

[0033] Figure 13 This is a schematic cross-sectional view of the material conveying pipe of the present invention;

[0034] Figure 14 This is a schematic diagram of another embodiment of the locking mechanism of the present invention;

[0035] Figure 15 This is the present invention. Figure 14 A schematic diagram of the structure of the middle card plate.

[0036] Figure label:

[0037] 100. Outer cylinder; 200. Mounting sleeve; 300. Conveying pipe; 400. Conveying rod; 500. Cleaning ring; 110. Inner cylinder; 120. Vent hole; 130. Positioning ring; 140. Spiral blade; 111. Positioning pin; 101. Guide groove; 210. Limiting groove; 220. Mounting cavity; 230. Clamping plate; 231. Connecting rod; 232. Torsion spring; 233. Clamping connector; 234. First inclined surface; 235. Second inclined surface; 201. Pin; 202. Limiting ring; 203. Spring Spring; 310, feed pipe; 320, driver; 330, mounting groove; 340, rotating roller; 350, receiving groove; 410, spiral groove; 420, receiving groove; 430, collecting cylinder; 440, pressure handle; 450, circular groove; 460, spiral sleeve; 431, mounting ring; 432, storage chamber; 433, circular hole; 434, convex ring; 510, ring cover plate; 530, slot; 540, sponge sleeve; 550, bristle bundle; 511, snap-fit ​​component; 501, snap-fit ​​groove; 502, pin hole. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, with examples of the embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figures 1 to 15As shown, the present invention provides an aluminum phosphide residue treatment device, including a sleeve inserted into the grain, a conveying pipe 300 communicating with the inner cavity of the sleeve at the upper end of the sleeve, a plurality of vent holes 120 uniformly provided on the sleeve for gas flow, a spiral blade 140 coaxially arranged inside the sleeve, that is, the spiral blade 140 is a rectangular rod, and two spiral guide grooves are respectively opened on both sides of the rectangular rod. A conveying rod 400 is inserted and installed inside the sleeve, the diameter of the conveying rod 400 is adapted to the inner diameter of the inner cylinder 110, and the circumferential opening of the conveying rod 400 from top to bottom is... There is a spiral groove 410, and several receiving grooves 420 are arranged at intervals in the spiral groove 410. There is a transition arc surface between the receiving grooves 420 and the spiral groove 410. The inner diameter of the receiving groove 420 is adapted to the pellet aluminum phosphide and is larger than the width of the spiral groove 410. The inner diameter of the spiral groove 410 is smaller than the outer diameter of the pellet aluminum phosphide. A spiral sleeve 460 is provided in the conveying rod 400 to cooperate with the spiral blade 140 and drive the conveying rod 400 to rotate. When the conveying rod 400 is sleeved on the outside of the spiral blade 140 and moves downward, the conveying rod 400 rotates synchronously during the descent.

[0040] The lower end of the conveyor rod 400 is coaxially provided with a collection cylinder 430 with an annular collection opening at the top. The middle part of the collection cylinder 430 has a circular hole 433 that matches the outer diameter of the spiral blade 140, so as to facilitate the passage of the spiral blade 140. The upper end of the conveyor rod 400 is provided with a pressure handle 440 which is rotatably connected. Specifically, the pressure handle 440 and the conveyor rod 400 are connected by a bearing so that the pressure handle 440 no longer rotates with the conveyor rod 400 during the rotation and descent of the conveyor rod 400. A cleaning ring 500 is coaxially mounted inside the upper opening of the sleeve below the pressure handle 440, which is attached to the upper section of the conveyor rod 400. The cleaning ring 500 is slidably connected to the conveyor rod 400. A scraper is provided on the inner wall of the cleaning ring 500 for processing the residue in the receiving tank 420. As the conveyor rod 400 moves upward and leaves the cleaning ring 500, the scraper moves along the spiral groove 410 on the conveyor rod 400 to scrape off the residue in the spiral groove 410 and the receiving tank 420.

[0041] In the above-described process, firstly, pelleted aluminum phosphide is stored in the conveying pipe 300; then, the sleeve is inserted into the grain pile; next, the conveying rod 400 is inserted into the sleeve; during the downward movement of the conveying rod 400 into the sleeve, the cooperation between the spiral blade 140 and the spiral sleeve 460 allows the conveying rod 400 to rotate and move downward from top to bottom. Simultaneously, after the receiving groove 420 on the conveying rod 400 aligns with the conveying pipe 300, because the outer diameter of the pelleted aluminum phosphide is larger than the inner diameter of the spiral groove 410 and smaller than the inner diameter of the receiving groove 420, ... When the pellet aluminum phosphide comes into contact with the spiral groove 410, it can only roll. It can only enter and be stored in the receiving tank 420 when it moves to the receiving tank 420. This achieves automatic feeding of the pellet aluminum phosphide and its spaced distribution in the inner cylinder 110. With the help of several vent holes 120, the gas generated by the uniform volatilization of the pellet aluminum phosphide is evenly dispersed. It can also isolate the pellet aluminum phosphide from the grain, making it easy to collect the aluminum phosphide residue after volatilization. This solves the problem of the pellet aluminum phosphide remaining in the grain after volatilization and being unable to be processed. When the conveyor rod 400 is taken out from the sleeve, the scraper on the cleaning ring 500 enters the receiving groove 420 along the spiral groove 410. Since the cleaning ring 500 is fixed in position, the scraper is always located in the spiral groove 410 of the conveyor rod 400 during the rotation process, thereby cleaning the residue in the spiral groove 410 and the receiving groove 420, and then collecting the residue in the receiving groove 420 into the collection cylinder 430. This reduces the need for manual cleaning and effectively prevents the inhalation of harmful gases in the residue.

[0042] In this embodiment, the bottom end of the conveying rod 400 is provided with a circular groove 450 whose depth matches the height of the spiral blade 140. A spiral sleeve 460 is provided axially within the circular groove 450 and is fixedly installed within the opening at the bottom end of the circular groove 450. The spiral sleeve 460 is provided with a spiral rectangular hole that matches the circumference of the spiral blade 140. Specifically, the rectangular hole is provided with two protrusions that match the spiral guide groove of the spiral blade 140, and the gap between the two protrusions matches the spiral guide groove of the spiral blade 140. The two protrusions can respectively fit the spiral guide grooves on both sides of the spiral blade 140 and drive the spiral sleeve 460 to rotate; with the cooperation of the spiral blade 140 and the spiral sleeve 460, when the spiral sleeve 460 in the conveying rod 400 is sleeved outside the spiral blade 140 and the conveying rod 400 moves downward, the spiral blade 140 can drive the spiral sleeve 460 to rotate, thereby driving the conveying rod 400 to rotate synchronously during the descent, so as to cooperate with the conveying pipe 300, the spiral groove 410 and the receiving groove 420 to feed the pellet aluminum phosphide at intervals.

[0043] like Figure 2 and Figure 4As shown, in order to further prevent the pellet aluminum phosphide residue from leaking into the grain, and at the same time to ensure that the pellet aluminum phosphide can effectively kill insects, the present invention controls the closing and opening states of the vent holes 120 on the sleeve, thereby achieving communication and relative sealing between the inner cavity of the sleeve and the outside world. In this embodiment, the sleeve includes an outer cylinder 100, an inner cylinder 110, and a mounting sleeve 200. The inner cylinder 110 is rotatably disposed inside the outer cylinder 100, and the outer wall of the inner cylinder 110 is in contact with the inner wall of the outer cylinder 100. The upper ends of both the outer cylinder 100 and the inner cylinder 110 are open. A plurality of vent holes 120 are evenly and symmetrically arranged on the inner cylinder 110 and the outer cylinder 100. In the initial state, the vent holes 120 on the inner cylinder 110 and the outer cylinder 100 are staggered, and the inner cavity of the inner cylinder 110 is not connected to the outside. When the inner cylinder 110 and the outer cylinder 100 rotate relative to each other by a set angle, the vent holes 120 on the inner cylinder 110 and the outer cylinder 100 correspond one-to-one, and the inner cylinder... The inner cavity of 110 is open to the outside; the mounting sleeve 200 is coaxially connected to and open to the outer cylinder 100, and a matching positioning ring 130 is provided along the circumference at the connection point; the cleaning ring 500 is set in the upper opening of the mounting sleeve 200; the conveying pipe 300 is fixed to one side of the upper end of the mounting sleeve 200 and is open to the inner cavity of the mounting sleeve 200; the positioning ring 130 is used to support and limit the sleeve inserted into the grain pile, so that the outer cylinder 100 and the inner cylinder 110 below the positioning ring 130 are inside the grain pile, and the mounting sleeve 200, the conveying pipe 300, the cleaning ring 500 and the pressure handle 440 above the positioning ring 130 are outside the grain pile, which is convenient for installation and use;

[0044] like Figure 2 and Figure 6 As shown, in order to align the vent holes 120 on the outer cylinder 100 and the inner cylinder 110 by rotating them at a set angle (the rotation angle is five to ten degrees), in this embodiment, the lower end of the spiral blade 140 is fixedly connected to the inner cylinder 110; a guide groove 101 is provided along the circumferential direction on the lower inner side of the outer cylinder 100, and a positioning post 111 is provided on the lower outer wall of the inner cylinder 110 that slides in the guide groove 101. The cooperation between the positioning post 111 and the guide groove 101 allows the inner cylinder 110 to be rotated relative to the outer cylinder 100 only at a set angle to limit its position, so as to cooperate with external force to achieve communication or relative sealing between the inner cavity of the inner cylinder 110 and the outside world through the relative rotation of the outer cylinder 100 and the inner cylinder 110.

[0045] In detail, during use, the upper end of the hand-held conveyor rod 400 is first inserted downwards into the inner cylinder 110 through the mounting sleeve 200. When the spiral sleeve 460 at the lower end of the conveyor rod 400 is inserted into the spiral blade 140 of the inner cylinder 110, since the hand-held conveyor rod 400 does not rotate, the spiral blade 140 drives the inner cylinder 110 to rotate forward by a set angle. At this time, the vent holes 120 on the outer cylinder 100 and the inner cylinder 110 are aligned, realizing the connection between the inner cavity of the inner cylinder 110 and the outside world; then... Release the upper end of the conveyor rod 400 and hold the pressure handle 440 to continue feeding the conveyor rod 400 downwards. Since the spiral blade 140 can no longer rotate to its limit position as the inner cylinder 110 rotates forward, the conveyor rod 400 will continue to rotate forward relative to the inner cylinder 110 and the pressure handle 440 during the descent, with the cooperation of the spiral blade 140 and the spiral sleeve 460, thereby realizing the intermittent feeding of pellet aluminum phosphide. During use, after the pellet aluminum phosphide volatilizes, it can enter the grain pile through the vent hole 120 to effectively kill insects.

[0046] When the pellet aluminum phosphide needs to be replaced after a set usage time, first lift the upper end of the conveyor rod 400 upwards. Since the conveyor rod 400 does not rotate, the driving spiral blade 140 causes the inner cylinder 110 to rotate in the opposite direction by a set angle. At this time, the vent holes 120 on the outer cylinder 100 and the inner cylinder 110 are misaligned, achieving a relative seal between the inner cavity of the inner cylinder 110 and the outside. Then, release the upper end of the conveyor rod 400 and continue lifting the conveyor rod 400 while holding the pressure handle 440. Because the spiral blade 140 rotates with the inner cylinder... When cylinder 110 reverses to its limit position and can no longer rotate, the conveyor rod 400, in conjunction with the spiral blade 140 and spiral sleeve 460, will continuously rotate in the opposite direction to the inner cylinder 110 and pressure handle 440 during its ascent. As the spiral groove 410 and receiving groove 420 on the conveyor rod 400 pass the scraper on the inner wall of the cleaning ring 500, the pellet aluminum phosphide residue in the spiral groove 410 and receiving groove 420 will be scraped off and fall down along the spiral groove 410 or directly downwards, eventually being collected in the collection cylinder 430. Due to the relative sealing between the inner cavity of the inner cylinder 110 and the outside during this process, it can effectively prevent the pellet aluminum phosphide residue from leaking into the grain through the vent hole 120.

[0047] like Figure 9 and Figure 10 As shown, the upper end face of the mounting sleeve 200 is provided with a limiting groove 210 that is adapted to the cleaning ring 500. The limiting groove 210 can limit the circumferential movement of the cleaning ring 500 to prevent it from moving. In order to ensure that the cleaning ring 500 does not move upward with the conveyor rod 400 during the upward movement of the conveyor rod 400, one or more sets of position locking mechanisms are provided between the mounting sleeve 200 and the cleaning ring 500 to limit the axial movement and circumferential rotation of the cleaning ring 500 to prevent it from moving.

[0048] In this embodiment, the position locking mechanism can be a pin 201. The outer end of the pin 201 is provided with a limiting ring 202 and the inner end is provided with an upward guide slope. The pin 201 passes through the wall of the mounting sleeve 200 and the guide slope is located in the inner cavity of the mounting sleeve 200. The outer wall of the cleaning ring 500 is provided with a corresponding pin hole 502. A spring 203 is sleeved on the surface of the pin 201 between the outer wall of the mounting sleeve 200 and the limiting ring 202. The two ends of the spring 203 are fixed to the limiting ring 202 and the outer wall of the mounting sleeve 200, respectively. In the original length state, the guide slope of the spring 203 is located in the inner cavity of the mounting sleeve 200, that is, the spring 203 always drives the pin 201 to move inward.

[0049] In the initial state, the cleaning ring 500 is sleeved on the conveyor rod 400 and located between the collection cylinder 430 and the pressure handle 440. After the spiral sleeve 460 of the conveyor rod 400 is inserted into the spiral blade 140 of the inner cylinder 110 through the round hole 433, the cleaning ring 500 is placed in the limiting groove 210 and contacts the guide slope at the outer end of the pin 201. As the conveyor rod 400 is driven downward, the cleaning ring 500 descends and squeezes the guide slope, thereby driving the pin 201 to move outward against the elastic force of the spring 203. When the pin 201 corresponds to the pin hole 502 on the outer wall of the cleaning ring 500, the spring 203 drives the pin 201 into the pin hole 502, thereby locking the position of the cleaning ring 500.

[0050] When removing the conveyor rod 400, after the collection cylinder 430 at the lower end of the conveyor rod 400 presses against the lower end of the cleaning ring 500, the cleaning ring 500 and the collection cylinder 430 can be removed from the outer casing together by pulling out the pin 201.

[0051] like Figure 14 and Figure 15As shown, in this embodiment, the position locking mechanism can also employ two symmetrically arranged locking plates 230 within the limiting groove 210. The cleaning ring 500 has a locking groove 530 that cooperates with the locking plates 230. The cooperation between the locking plates 230 and the locking groove 530 can limit the axial movement of the cleaning ring 500, preventing the cleaning ring 500 from rising with the conveyor rod 400 and thus preventing the formation of a closed space within the inner cylinder 110. Two symmetrically arranged mounting cavities 220 are provided within the limiting groove 210. The locking plates 230 are elastically disposed within the mounting cavities 220. Specifically, connecting rods 231 are connected to both sides of the lower end of the locking plates 230. The connecting rods 231 are located within the mounting cavities 220, and a torsion spring 232 is fixedly connected between the connecting rods 231 and the mounting cavities 220. A locking connector 233 is provided at the upper end of the locking plates 230. The cross-section of the locking connector 233 is triangular, and the shape of the locking connector 233 matches the shape of the locking groove 530. The clamping connector 233 has a first inclined surface 234 and a second inclined surface 235. The second inclined surface 235 is provided so that the cleaning ring 500 can lift the clamping plate 230, so that the clamping plate 230 enters the clamping groove 530 and fixes the position of the cleaning ring 500. The first inclined surface 234 is provided so that after the collecting cylinder 430 contacts the cleaning ring 500, the cleaning ring 500 can be pushed out from the mounting sleeve 200. The inclination angle of the first inclined surface 234 is greater than the inclination angle of the second inclined surface 235, so that the resistance increases when the cleaning ring 500 moves out of the mounting sleeve 200, preventing the cleaning ring 500 from easily sliding out of the mounting sleeve 200.

[0052] In the initial state, the cleaning ring 500 is sleeved on the conveyor rod 400 and located between the collection cylinder 430 and the pressure handle 440. After the spiral sleeve 460 of the conveyor rod 400 is inserted into the spiral blade 140 of the inner cylinder 110 through the round hole 433, the cleaning ring 500 is placed in the limiting groove 210 and contacts the second inclined surface 235 of the locking connector 233. As the conveyor rod 400 is driven downward, when the cleaning ring 500 descends and squeezes through the second inclined surface 235, the driving plate 230 swings against the elastic force of the torsion spring 232. When the locking connector 233 on the locking plate 230 corresponds to the position of the locking groove 530, the torsion spring 232 resets and drives the locking connector 233 into the locking groove 530, thereby locking the position of the cleaning ring 500.

[0053] When the conveyor rod 400 is removed, after the collection cylinder 430 at the lower end of the conveyor rod 400 presses against the lower end of the cleaning ring 500, the cleaning ring 500 is subjected to force between the snap joint 233 and the first inclined surface 234, which drives the snap plate 230 to swing against the elastic force of the torsion spring 232, so that the cleaning ring 500 and the collection cylinder 430 can be removed from the outer shell together.

[0054] like Figure 7 and Figure 9As shown, the scraper is always located within the spiral groove 410 and is initially located at the uppermost end of the spiral groove 410. The scraper includes a bristle bundle 550 and a sponge sleeve 540 disposed at the outer end of the bristle bundle 550. The outer end of the bristle bundle 550 is bundled together and the inner end is freely dispersed. The outer diameter of the outer end of the bristle bundle 550 is smaller than the width of the spiral groove 410. The length of the outer end of the bristle bundle 550 is adapted to the depth of the spiral groove 410. After the sponge sleeve 540 is placed on the outer end of the bristle bundle 550, the outer diameter is larger than the width of the spiral groove 410. The area of ​​the bristles at the inner end of the bristle bundle 550 in the free state is larger than the area of ​​the receiving groove 420. The length of the bristles at the inner end of the bristle bundle 550 in the free state is larger than the depth of the receiving groove 420.

[0055] The outer end of the bristle bundle 550 always moves along the spiral groove 410, and the spiral groove 410 is cleaned by the expandable and contractible sponge sleeve 540, while the outer end of the bristle bundle 550 provides good support. The bristles at the inner end of the bristle bundle 550 are bent in the spiral groove 410. When the bristle bundle 550 moves to the receiving groove 420, the bristles at the inner end of the bristle bundle 550 freely unfold to clean the receiving groove 420. As the scraper and the conveyor rod 400 move relative to each other, the aluminum phosphide residue in the spiral groove 410 and the receiving groove 420 can be cleaned by the sponge sleeve 540 and the bristle bundle 550.

[0056] like Figure 3 , Figure 7 and Figure 8 As shown, in order to automatically seal the collection cylinder 430 after it is removed, the cleaning ring 500 is detachably equipped with a ring cover plate 510 at its lower end. The outer diameter of the ring cover plate 510 is adapted to the inner diameter of the inner cylinder 110, and the ring cover plate 510 is used to seal the annular collection opening at the upper end of the collection cylinder 430. A snap-fit ​​groove 501 is provided at the lower end of the cleaning ring 500, and a snap-fit ​​piece 511 that cooperates with the snap-fit ​​groove 501 is fixedly connected to the upper end surface of the ring cover plate 510. The engagement between the connectors 511 enables a detachable connection between the ring cover plate 510 and the cleaning ring 500. During the cleaning process, the ring cover plate 510 and the cleaning ring 500 are relatively fixed in position, preventing the ring cover plate 510 from moving downward and obstructing the annular collection opening at the upper end of the collection cylinder 430. After cleaning, the ring cover plate 510 can seal the annular collection opening at the upper end of the collection cylinder 430 and can be separated from the cleaning ring 500, facilitating further processing of the collection cylinder 430 containing aluminum phosphide residue.

[0057] like Figure 7 and Figure 8As shown, in this embodiment, the snap-fit ​​groove 501 includes a guide hole and an arc-shaped sliding groove, and the snap-fit ​​member 511 includes an anti-detachment part at the upper end and a sliding rod at the lower end. The area of ​​the anti-detachment part is smaller than that of the guide hole and larger than that of the arc-shaped sliding groove. After inserting the anti-detachment part of the snap-fit ​​member 511 into the guide hole, the ring cover plate 510 is rotated to achieve a coaxial connection between the ring cover plate 510 and the cleaning ring 500.

[0058] like Figure 12 As shown, in this embodiment, the outer wall of the collecting cylinder 430 contacts the inner wall of the inner cylinder 110. The collecting cylinder 430 is provided with an annular storage cavity 432, and an annular collecting opening is provided on the upper end face of the storage cavity 432. The side wall of the annular collecting opening is provided with a protruding ring 434 with its end face inclined inward. The protruding ring 434 is made of a flexible material, such as a rubber protruding ring. After the lower end of the ring cover plate 510 is inserted into the annular collecting opening, the lower end of the ring cover plate 510 is squeezed by deformation, thereby closing the annular collecting opening at the upper end of the collecting cylinder 430 through the ring cover plate 510. The upper end face of the protruding ring 434 is inclined inward, which is conducive to the residue swept off the conveying rod 400 entering the storage cavity 432 of the collecting cylinder 430 more quickly.

[0059] like Figure 2 , Figure 7 , Figure 8 and Figure 12 As shown, in order to disassemble the collection cylinder 430 and allow further processing of the collection cylinder 430 containing aluminum phosphide residue, in this invention, a mounting ring 431 is fixedly connected to the collection cylinder 430. The mounting ring 431 is threadedly connected to the lower end of the conveyor rod 400, and the circumferential surface of the mounting ring 431 is flush with the conveyor rod 400 after the threaded connection, so as to avoid blocking the residue from entering the storage chamber 432. In this embodiment, the inner surface of the mounting ring 431 is provided with an internal thread, the lower end of the conveyor rod 400 has a smaller outer diameter and is provided with an external thread, and the mounting ring 431 is threadedly installed at the lower end of the conveyor rod 400, with the circumferential surface flush.

[0060] The mounting ring 431 and the transmission rod 400 can also be connected by a snap-fit ​​method (the snap-fit ​​method uses existing technology and will not be described in detail here).

[0061] In this invention, the sealing of the collection cylinder 430 by the ring cover plate 510 can be achieved by the deformation of the convex ring 434 pressing the lower end of the ring cover plate 510; or the sealing of the collection cylinder 430 by the ring cover plate 510 and the mounting ring 431 can be achieved by threaded connection. In this embodiment, the inner wall of the ring cover plate 510 is provided with internal threads, and the outer wall of the mounting ring 431 is provided with corresponding external threads. After the ring cover plate 510 contacts the collection cylinder 430, the collection cylinder 430 is rotated by the transmission rod 400, thereby achieving the threaded connection between the ring cover plate 510 and the mounting ring 431.

[0062] After the ring cover plate 510 seals the collection cylinder 430, the axial and circumferential movement restrictions on the cleaning ring 500 are released by the position locking mechanism, and the cleaning ring 500, the ring cover plate 510, the collection cylinder 430, and the conveyor rod 400 are removed from the outer cylinder 100 together. Then, by rotating the collection cylinder 430, the collection cylinder 430, the cleaning ring 500, and the ring cover plate 510 are separated from the conveyor rod 400 together. Finally, by rotating the collection cylinder 430, the ring cover plate 510 is rotated together, and the snap fastener 511 on the ring cover plate 510 is disengaged from the snap fastener groove 501 on the cleaning ring 500, and the collection cylinder 430 and the ring cover plate 510 are removed from the cleaning ring 500, which facilitates further processing of the aluminum phosphide residue in the collection cylinder 430.

[0063] like Figure 1 and Figure 13 As shown, to allow aluminum phosphide to be intermittently fed into the inner cylinder 110, the feed pipe 300 has an installation groove 330 inside. A rotating roller 340 is rotatably mounted inside the installation groove 330. Multiple receiving grooves 350 are evenly spaced around the rotating roller 340. A feed pipe 310 corresponding to the rotating roller 340 is connected to the top of the feed pipe 300. The feed pipe 310 is connected to an external storage container. A driver 320 is installed on one side of the feed pipe 300. The rotating shaft of the driver 320 passes through the feed pipe 300 and is coaxially and fixedly connected to the rotating roller 340. The receiving grooves 350 on the rotating roller 340 can intermittently convey the pellet aluminum phosphide. After conveying the pellet aluminum phosphide, the rotating roller 340 seals the feed pipe 300 to prevent the gas generated during the volatilization of the pellet aluminum phosphide from escaping from the feed pipe 300. In detail, in order to move the pellet aluminum phosphide on the rotating roller 340 into the receiving tank 420 as quickly as possible, the outlet end of the feed pipe 300 is set with a downward inclined surface.

[0064] In this invention, considering the large volume of the sleeve inserted into the grain, the length of the sleeve can generally reach 1 to 3 meters, and the diameter of the sleeve can be 15 to 25 centimeters, providing ample space for structural design optimization. Therefore, this invention adopts a multi-layer nested design, namely, an outer cylinder 100, an inner cylinder 110, and a spiral blade 140 nested sequentially. With the cooperation between the spiral blade 140 and the spiral sleeve 460, the conveyor rod 400 rotates synchronously during its descent, allowing for the intermittent feeding of the pellet aluminum phosphide. When the conveyor rod 400 enters the inner cylinder 110, the upper end of the conveyor rod 400 is held and rotated. The spiral sleeve 460 drives the spiral blade 140 to rotate the inner cylinder 110 in the forward direction, aligning the vent holes 120 on the outer cylinder 100 and the inner cylinder 110 to achieve communication between the inner cavity of the inner cylinder 110 and the outside. When the conveyor rod 400 is removed from the inner cylinder 110, the upper end of the conveyor rod 400 is held and lifted upwards. The spiral sleeve 460 drives the spiral blade 140 to rotate the inner cylinder 110 in the reverse direction, causing the vent holes 120 on the outer cylinder 100 and the inner cylinder 110 to be misaligned, achieving a relative seal between the inner cavity of the inner cylinder 110 and the outside.

[0065] In this invention, after the aluminum phosphide residue is collected and treated, considering that toxic phosphine gas may remain after aluminum phosphide fumigation, posing a threat to the environment and human health, a reaction vessel is provided to work in conjunction with the aluminum phosphide collection sleeve. A stirring rod is installed inside the reaction vessel, and a multi-speed adjustable motor connected to the stirring rod is installed at the bottom of the reaction vessel to control the stirring speed. A water storage tank connected to the reaction vessel is installed above the reaction vessel, and a copper heating element is installed inside the water storage tank to heat the water. An aluminum phosphide residue inlet is provided above the reaction vessel, and a sealing cap is installed on the inlet. Four phosphine gas processors and two pressure relief valves are installed above the reaction vessel. Activated carbon is installed inside the phosphine gas processors to adsorb harmful gases. A remote-controlled electric regulating ball valve is installed below the vessel, and another remote-controlled electric regulating ball valve is installed in the middle of the pipeline connecting the water storage tank and the reaction vessel. During operation, aluminum phosphide residue is first collected and poured into a reaction tank. Then, boiling water from a storage tank is remotely injected into the reaction tank. A stirring rod driven by a remote-controlled motor is used to stir the aluminum phosphide and boiling water evenly. After the reaction is complete, the wastewater is discharged into a wastewater pool through a remotely controlled ball valve. This completes the entire operation, ensuring no secondary pollution occurs during the treatment process. It can quickly and effectively treat aluminum phosphide residue, reducing treatment costs and time.

[0066] Working principle of this invention:

[0067] In use, the outer cylinder 100 is first inserted into the grain from the top of the grain bin. The outer cylinder 100 is deeply inserted into the grain, and the mounting sleeve 200 protrudes from the horizontal surface of the grain. Then, the conveying rod 400 enters the inner cylinder 110 from the mounting sleeve 200. The spiral blade 140 contacts the spiral sleeve 460. With the cooperation of the spiral blade 140 and the spiral sleeve 460, the conveying rod 400 rotates and moves downward toward the inner cylinder 110.

[0068] Simultaneously, pellet aluminum phosphide enters the conveying pipe 300 through the feed pipe 310. The pellet aluminum phosphide is located in the receiving groove 350 on the rotating roller 340. When the receiving groove 420 on the conveying rod 400 corresponds to the outlet of the conveying pipe 300, the pellet aluminum phosphide enters the receiving groove 420 and is sequentially conveyed to the inner cylinder 110.

[0069] After the conveyor rod 400 enters the inner cylinder 110, the cleaning ring 500 is fixed by the position locking mechanism to prevent the cleaning ring 500 from rotating and moving.

[0070] When the spiral sleeve 460 contacts the spiral blade 140, the spiral sleeve 460 will drive the spiral blade 140 to rotate at a certain angle, so that the vent holes 120 on the inner cylinder 110 and the outer cylinder 100 correspond, thereby opening the vent holes 120 on the sleeve so that the gas generated by the volatilization of the pellet aluminum phosphide can come into contact with the grain.

[0071] After the fumigation of the pellet aluminum phosphide is completed, the pellet aluminum phosphide becomes a blocky slag material and is located in the receiving tank 420;

[0072] Lifting the conveyor rod 400 by pressing the handle 440 causes it to rotate in the opposite direction again under the cooperation of the spiral sleeve 460 and the spiral blade 140, causing the inner cylinder 110 to rotate at a certain angle. This causes the vent holes 120 on the inner cylinder 110 and the outer cylinder 100 to be staggered, thus sealing the vent holes 120 on the inner cylinder 110. Since the cleaning ring 500 remains stationary, a sealed space is formed between the collecting cylinder 430 and the cleaning ring 500 during the upward movement of the conveyor rod 400. This prevents the absorption of incompletely volatilized gases from the aluminum phosphide residue by the human body. At the same time, the scraper on the cleaning ring 500 enters the receiving tank 420 from the spiral groove 410. The residue in the receiving tank 420 falls downward into the storage chamber 432 on the collecting cylinder 430, thereby cleaning the residue in the receiving tank.

[0073] When the collecting cylinder 430 contacts the ring cover plate 510, the ring cover plate 510 seals the inlet of the storage chamber 432 on the collecting cylinder 430. Then, the collecting cylinder 430 is rotated, separating the collecting cylinder 430 from the conveying rod 400. At the same time, the threads on the collecting cylinder 430 and the ring cover plate 510 correspond. The rotation of the collecting cylinder 430 causes the snap fastener 511 to separate from the snap fastener groove 501, thereby separating the cleaning ring 500 from the ring cover plate 510. This achieves the connection between the collecting cylinder 430 and the ring cover plate 510, sealing the storage chamber 432 of the disassembled collecting cylinder 430 to prevent gas leakage from the storage chamber 432.

[0074] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0075] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A device for treating aluminum phosphide residue, comprising a sleeve inserted into grain, characterized in that, The upper end of the sleeve is provided with a conveying pipe that communicates with the inner cavity of the sleeve. The sleeve is evenly provided with several vent holes for gas flow. The sleeve is coaxially provided with a spiral blade inside. The sleeve is inserted and installed inside. The sleeve includes an outer cylinder, an inner cylinder and an installation sleeve. The inner cylinder is rotatably set inside the outer cylinder, and the outer wall of the inner cylinder is in contact with the inner wall of the outer cylinder. The installation sleeve is coaxially connected to and communicates with the outer cylinder. The upper ends of both the outer cylinder and the inner cylinder are set as open. The inner cylinder and the outer cylinder are evenly and symmetrically provided with several vent holes. The conveying pipe is fixed to one side of the installation sleeve and communicates with the inner cavity of the installation sleeve. The diameter of the conveying rod is adapted to the inner diameter of the inner cylinder. The conveying rod is provided with a spiral groove from top to bottom along its circumference. Several receiving grooves are provided at intervals in the spiral groove. The conveying rod is provided with a spiral sleeve that works with the spiral blade and drives the conveying rod to rotate. A collection cylinder is coaxially mounted at the lower end of the conveyor rod. A circular hole with an outer diameter matching the spiral blade is opened in the middle of the collection cylinder. A pressure handle is inserted through and rotatably connected to the upper end of the conveyor rod. A cleaning ring is coaxially mounted inside the upper opening of the sleeve below the pressure handle and is slidably connected to the upper section of the conveyor rod. A scraper is provided on the inner wall of the cleaning ring for processing the residue in the receiving tank. The scraper moves along the spiral groove on the conveyor rod to scrape off the residue in the spiral groove and the receiving tank.

2. The aluminum phosphide residue treatment device according to claim 1, characterized in that, The lower end of the spiral blade is fixedly connected to the inner cylinder, and a guide groove is provided along the circumference on the lower inner side of the outer cylinder. A positioning post that slides in the guide groove is provided on the lower outer wall of the inner cylinder.

3. The aluminum phosphide residue treatment device according to claim 1, characterized in that, The upper end face of the mounting sleeve is provided with a limiting groove that is compatible with the cleaning ring, and one or more sets of position locking mechanisms are provided between the mounting sleeve and the cleaning ring for limiting the cleaning ring.

4. The aluminum phosphide residue treatment device according to claim 3, characterized in that, The position locking mechanism includes a pin, with a limit ring at the outer end and an upward guide slope at the inner end. The pin passes through the wall of the mounting sleeve and the guide slope is located in the inner cavity of the mounting sleeve. A pin hole is correspondingly provided on the outer wall of the cleaning ring. A spring is sleeved on the surface of the pin between the outer wall of the mounting sleeve and the limit ring. The two ends of the spring are fixed to the limit ring and the outer wall of the mounting sleeve, respectively.

5. The aluminum phosphide residue treatment device according to claim 3, characterized in that, The position locking mechanism includes two symmetrically arranged locking plates located in the limiting groove. The cleaning ring has a locking groove for cooperating with the locking plates. The limiting groove has two symmetrically arranged mounting cavities, and the locking plates are elastically arranged in the mounting cavities. The upper end of the locking plate has a locking connector with a triangular cross-section.

6. The aluminum phosphide residue treatment device according to claim 5, characterized in that, The clamp connector has a first inclined surface and a second inclined surface. The inclination angle of the first inclined surface is greater than that of the second inclined surface. Both sides of the lower end of the clamp plate are connected to connecting rods. The connecting rods are located in the mounting cavity, and a torsion spring is fixedly connected between the connecting rods and the mounting cavity.

7. The aluminum phosphide residue treatment device according to claim 1, characterized in that, The scraper includes a bristle bundle and a sponge sleeve disposed at the outer end of the bristle bundle. The outer end of the bristle bundle is bundled together and the inner end is freely dispersed. The outer diameter of the outer end of the bristle bundle is smaller than the width of the spiral groove, and the length of the outer end of the bristle bundle is adapted to the depth of the spiral groove. After the sponge sleeve is placed on the outer end of the bristle bundle, the outer diameter is larger than the width of the spiral groove. The area of ​​the bristles at the inner end of the bristle bundle in the free state is larger than the area of ​​the receiving groove, and the length of the bristles at the inner end of the bristle bundle in the free state is greater than the depth of the receiving groove. The outer end of the bristle bundle always moves along the spiral groove.

8. The aluminum phosphide residue treatment device according to claim 1, characterized in that, The cleaning ring has a detachable cover plate at its lower end. The outer diameter of the cover plate is adapted to the inner diameter of the inner cylinder. The cleaning ring has a snap-fit ​​groove at its lower end. A snap-fit ​​piece that works with the snap-fit ​​groove is fixedly connected to the upper surface of the cover plate. The outer wall of the collection cylinder is in contact with the inner wall of the inner cylinder. The collection cylinder has an annular storage cavity. An annular collection opening is provided on the upper surface of the storage cavity. A convex ring with an inwardly inclined end face is provided on the side wall of the annular collection opening.

9. The aluminum phosphide residue treatment device according to claim 8, characterized in that, An installation ring is fixedly connected to the collection cylinder. The installation ring is threaded to the lower end of the conveyor rod, and the circumferential surface of the installation ring is flush with the conveyor rod after the threaded connection. The inner surface of the installation ring is provided with internal threads. The lower end of the conveyor rod has a smaller outer diameter and is provided with external threads. The installation ring and the thread are installed at the lower end of the conveyor rod, and the circumferential surface is flush with the installation ring. The inner wall of the ring cover plate is provided with internal threads, and the outer wall of the installation ring is provided with corresponding external threads.

Images