Uniform drying device for agricultural organic fertilizer

Abstract

The utility model discloses an agricultural organic fertilizer uniform drying device which comprises a drying box, two sets of supporting legs are symmetrically installed on the lower portion of the outer portion of the drying box, a feeding pipe is connected to the upper portion of the front face of the drying box in a penetrating mode, a discharging pipe is connected to the bottom of the drying box in a penetrating mode, and a heating cylinder is arranged in the drying box. A purification assembly is arranged above the drying box, the purification assembly comprises a ventilation hood arranged above the drying box, a ventilation plate is fixedly mounted at the top of the ventilation hood, a mounting frame is fixedly mounted at the top end in the ventilation hood, and fans are symmetrically mounted in the mounting frame; and after the organic fertilizer drying device is jacked up for use, a user can conveniently replace or clean the activated carbon layer, the situation that blockage is caused by dust generated during drying, the passing ability of gas is affected is avoided, the user can conveniently use the organic fertilizer drying device, and convenience and usability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of organic fertilizer drying, in particular to a uniform drying device for agricultural organic fertilizer. Background Art

[0002] Organic fertilizer refers to carbon-containing materials that are mainly derived from plants and (or) animals and applied to the soil to provide plant nutrition as its main function. It is processed from biomass, animal and plant waste, and plant residues, eliminating toxic and harmful substances. It is rich in a large number of beneficial substances and is the main nutrient for green food production. During the production and processing of organic fertilizer, it often needs to be dried.

[0003] Publication No. CN220136005U discloses a drying device for organic fertilizer production and processing in agriculture. The patent achieves the purpose of removing odor and preventing material blocking through the functions of a discharge seat, a gas collecting cover, a filter cover, a lifting seat, a driving motor, a supporting mesh plate, activated carbon particles, an exhaust fan, a moving plate, a threaded rod, a pulley, a synchronous belt, a push blade rotating rod, a discharge port and a push motor. The patent solves the problem that the existing drying device lacks an odor removal structure, and the organic fertilizer will emit odorous gas during the drying process, polluting the working environment and having an adverse effect on the health of the staff. In addition, the drying device is prone to accumulation and blocking when discharging, which brings inconvenience to people. However, the patent still has the following problems in actual use:

[0004] By processing the odor, the problem that the existing drying device lacks an odor removal structure is solved. During the drying process of organic fertilizer, odorous gas will be emitted to the outside, polluting the working environment and having an adverse effect on the health of the staff. However, in actual use, the organic fertilizer needs to be constantly turned over during the drying process, and a certain amount of dust will be generated during the turning of the organic fertilizer. When processing the odor, the dust can be adsorbed together with the air under the action of the exhaust fan. Due to the presence of dust, when the gas passes through the activated carbon particles, it is easy to cause the activated carbon particle layer to be blocked, and it needs to be cleaned frequently. The activated carbon shell is arranged inside the filter cover, which is inconvenient for users to disassemble and clean.

[0005] A uniform drying device for agricultural organic fertilizer is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to provide a uniform drying device for agricultural organic fertilizer, so as to solve the problem proposed in the above-mentioned background technology that the existing drying device lacks an odor removal structure by processing the odor, and the organic fertilizer will emit odorous gas to the outside during the drying process, polluting the working environment and bringing adverse effects on the health of the staff. However, in actual use, the organic fertilizer needs to be constantly turned over during the drying process, and a certain amount of dust will be generated during the turning of the organic fertilizer. When the odor is processed, the dust can be adsorbed together with the air under the action of the exhaust fan. Due to the presence of dust, when the gas passes through the activated carbon particles, it is easy to cause the activated carbon particle layer to be blocked, and it needs to be cleaned frequently. The activated carbon shell is arranged inside the filter cover, which is inconvenient for users to disassemble and clean.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a uniform drying device for agricultural organic fertilizer, comprising a drying box;

[0008] Two sets of supporting legs are symmetrically installed at the lower part of the outside of the drying box, a feeding pipe is connected through the upper part of the front of the drying box, a discharging pipe is connected through the bottom of the drying box, and a heating cylinder is arranged inside the drying box;

[0009] Also includes:

[0010] A purification component is arranged above the drying box;

[0011] Wherein, the purification component comprises a ventilation hood arranged above the drying box, and a ventilation plate is fixedly installed on the top of the ventilation hood, and a mounting frame is fixedly installed on the top of the interior of the ventilation hood, and a fan is symmetrically installed inside the mounting frame, and a cylinder is fixedly installed above the interior of the ventilation hood, and positioning strips are symmetrically installed on the upper sides of the interior of the cylinder, and a fixing frame is arranged inside the cylinder below the two positioning strips, and an activated carbon layer is arranged inside the fixing frame;

[0012] Among them, a mesh plate is arranged inside the cylinder below the activated carbon layer, and two groups of fixed frames are symmetrically installed below the two sides of the cylinder, and movable rods are slidably connected inside each group of two fixed frames, and a positioning plate is fixedly installed at one end of the two movable rods, and the positioning plate is slidably connected to the cylinder, and a connecting plate is fixedly installed at the other end of the two movable rods.

[0013] Preferably, a telescopic spring is sleeved on one side of the outer side of the movable rod, one end of the telescopic spring is fixedly connected to the fixing frame, and the other end of the telescopic spring is fixedly connected to the connecting plate, and a guide rod is symmetrically slidably connected to one side of the inner side of the connecting plate, and the guide rod is fixedly connected to the cylinder.

[0014] Preferably, a sliding rod is fixedly installed on one side of the two connecting plates that are close to each other, and a positioning frame is slidably connected to the outer side of the sliding rod, and the positioning frame is fixedly connected to the cylinder, and a fixing strip is fixedly installed on one side of the two sliding rods that are close to each other.

[0015] Preferably, one side of the cylinder is rotatably connected to a rotating rod between two fixed bars, and a rotating part is fixedly installed on the outer side of the rotating rod, and the rotating part is slidably connected to the fixed bar, and a handle is fixedly installed on the outer side of the rotating rod close to the rotating part.

[0016] Preferably, a fixed block is fixedly installed on one side of the exterior of the ventilation hood, and an electric push rod is fixedly installed on the top of one side of the drying box, and the movable end of the electric push rod is fixedly connected to the fixed block, and a support rod is symmetrically installed on the other side of the ventilation hood, and a positioning block is symmetrically installed on the top of the other side of the drying box, and the support rod is slidably connected to the positioning block.

[0017] Preferably, the interior of the drying box is symmetrically installed with mounting rods, and the interiors of the two mounting rods are rotatably connected with a rotating shaft, and a spiral blade is fixedly installed at the bottom end of the rotating shaft, and a plurality of rotating blades are symmetrically installed outside the rotating shaft, and a driving motor is fixedly installed on one side of the drying box below the positioning block, and the output end of the driving motor passes through the drying box and is fixedly installed with a connecting shaft, and the outside of the connecting shaft is symmetrically rotatably connected with a limit frame, and the limit frame is fixedly connected to the upper mounting rod.

[0018] Preferably, a second bevel gear is fixedly installed at one end of the connecting shaft, and a first bevel gear is fixedly installed on the outside of the rotating shaft on one side of the second bevel gear, and the first bevel gear is meshingly connected to the second bevel gear, and a shell is rotatably connected to the outside side of the rotating shaft and the outside side of the connecting shaft, and the shell is fixedly connected to the mounting rod, and a cleaning rod is fixedly installed on the upper side of the rotating shaft, and a silicone strip is provided on the top of the cleaning rod.

[0019] Compared with the prior art, the utility model has the following beneficial effects: the uniform drying device for agricultural organic fertilizer is provided with a purification component above the drying box, so that the displacement caused by drying the organic fertilizer can be purified, and after lifting up for use, it is convenient for users to replace or clean the activated carbon layer, avoiding the blockage caused by the dust generated by drying and affecting the permeability of the gas, which is convenient for users to use and improves the convenience and usability. The specific contents are as follows:

[0020] 1. A purification component is arranged above the drying box. When drying the organic fertilizer, the organic fertilizer is poured into the drying box through the feeding pipe and dried through the drying box. During the drying process, the fan is started so that the odorous gas and dust can be drawn upward, and the gas is purified through the activated carbon layer and the mesh plate, and then discharged through the ventilation plate. When the activated carbon layer and the mesh plate are disassembled, the ventilation hood can be lifted by the electric push rod, and then the handle can be turned to drive the rotating rod to rotate, so that the rotating part rotates to push the two fixed bars away from each other, so that the sliding rod moves, and then the connecting plates move away from each other, which can drive the movable rod to move, and the telescopic spring can be stretched so that the two positioning plates move away from each other and no longer block the mesh plate, so that the mesh plate can be moved. It can be disassembled from the fixed frame for easy cleaning or replacement. When installing the fixed frame and the screen plate, the fixed frame and the screen plate are directly placed in the cylinder and pushed upward. One side of the positioning plate is arc-shaped. The upward movement of the fixed frame and the screen plate can push the positioning plate to move. The movement of the positioning plate can stretch the telescopic spring. After the screen plate passes through the positioning plate, the fixed frame fits the positioning strip, and the telescopic spring restores its deformation, so that the positioning plate positions the screen plate, which is convenient for installing the fixed frame and the screen plate. The displacement caused by drying of organic fertilizer is purified through the purification component, and it is convenient for users to replace or clean the activated carbon layer after lifting it up for use, so as to avoid blockage caused by dust generated by drying and affect the permeability of gas, which is convenient for users to use and improves convenience and usability.

[0021] 2. When drying the organic fertilizer, start the driving motor to drive the connecting shaft to rotate. After the connecting shaft rotates, the meshing of the first bevel gear and the second bevel gear drives the rotating shaft to rotate. The organic fertilizer can be turned over by the rotation of the rotating blades, and the spiral blades can be driven to rotate, so that the organic fertilizer at the bottom can be pushed upward. After the organic fertilizer is dried, the driving motor can be reversed, and the spiral blades can be reversed to facilitate the discharge of the organic fertilizer. The rotating shaft can drive the cleaning rod to rotate during the rotation process. The rotation of the cleaning rod can drive the top silicone strip and the bottom of the mesh plate to clean and wipe to avoid excessive dust adhesion, thereby improving practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the front structure of the utility model;

[0023] Figure 2 This is a front sectional structural schematic diagram of the utility model;

[0024] Figure 3 For this utility model Figure 2 A schematic diagram of the enlarged structure of the middle A area;

[0025] Figure 4 This is a schematic diagram of the bottom view of the cylinder structure of the utility model;

[0026] Figure 5 It is a schematic diagram of the front structure of the cylinder body of the utility model.

[0027] In the figure: 1. drying box; 101. supporting legs; 102. feeding pipe; 103. discharging pipe; 104. heating cylinder; 105. mounting rod; 106. rotating shaft; 107. rotating blade; 108. driving motor; 109. connecting shaft; 110. limiting frame; 111. first bevel gear; 112. second bevel gear; 113. housing; 114. cleaning rod; 2. purification assembly; 201. ventilation hood; 2011. cylinder; 202. ventilation plate; 203. mounting frame; 2 04, fan; 205, fixed frame; 206, activated carbon layer; 207, mesh plate; 208, positioning strip; 209, fixed frame; 210, movable rod; 211, positioning plate; 212, connecting plate; 213, telescopic spring; 214, guide rod; 215, sliding rod; 216, positioning frame; 217, rotating rod; 218, rotating part; 219, fixed strip; 220, handle; 221, fixed block; 222, electric push rod; 223, support rod; 224, positioning block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the implementation regulations described are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-5The utility model provides a technical solution: a uniform drying device for agricultural organic fertilizer, comprising a drying box 1, two sets of supporting legs 101 are symmetrically installed at the lower part of the outside of the drying box 1, and a feeding pipe 102 is connected through the upper part of the front of the drying box 1, and a discharging pipe 103 is connected through the bottom of the drying box 1, and a heating cylinder 104 is arranged inside the drying box 1, and also comprises: a purification component 2 is arranged above the drying box 1, wherein the purification component 2 comprises a ventilation hood 201 arranged above the drying box 1, and a ventilation plate 202 is fixedly installed on the top of the ventilation hood 201, and a mounting frame 203 is fixedly installed on the top of the interior of the ventilation hood 201, and a fan 204 is symmetrically installed inside the mounting frame 203, and a cylinder 2011 is fixedly installed above the interior of the ventilation hood 201, and positioning strips 208 are symmetrically installed above the inner sides of the cylinder 2011, and the interior of the cylinder 2011 A fixing frame 205 is arranged below the two positioning bars 208, and an activated carbon layer 206 is arranged inside the fixing frame 205, wherein a mesh plate 207 is arranged inside the cylinder 2011 below the activated carbon layer 206, and two groups of fixing frames 209 are symmetrically installed below both sides of the cylinder 2011, and movable rods 210 are slidably connected inside each group of two fixing frames 209, and a positioning plate 211 is fixedly installed at one end of the two movable rods 210, and the positioning plate 211 is slidably connected to the cylinder 2011, and a connecting plate 212 is fixedly installed at the other end of the two movable rods 210, and the displacement caused by drying of the organic fertilizer is purified by the purification component 2, and after being lifted up for use, it is convenient for users to replace or clean the activated carbon layer 206, so as to avoid blockage caused by dust generated by drying and affect the permeability of the gas, which is convenient for users to use and improves convenience and usability.

[0030] A telescopic spring 213 is sleeved on one side of the outer side of the movable rod 210, and one end of the telescopic spring 213 is fixedly connected to the fixing frame 209, and the other end of the telescopic spring 213 is fixedly connected to the connecting plate 212, and a guide rod 214 is symmetrically slidably connected to the inner side of the connecting plate 212, and the guide rod 214 is fixedly connected to the cylinder 2011, so that the movable rod 210 can automatically reset after moving, and a sliding rod 215 is fixedly installed on the side where the two connecting plates 212 are close to each other, and a positioning frame 216 is slidably connected to the outer side of the sliding rod 215, and the positioning frame 216 is fixedly connected to the cylinder 2011, and a fixing strip 219 is fixedly installed on the side where the two sliding rods 215 are close to each other, so that the movement of the sliding rod 215 can push the connecting plate 212 to move, and one side of the cylinder 2011 is located between the two A rotating rod 217 is rotatably connected between the fixed bars 219, and a rotating member 218 is fixedly installed on the outer side of the rotating rod 217, and the rotating member 218 is slidably connected to the fixed bar 219, and a handle 220 is fixedly installed on the outer side of the rotating rod 217 close to the rotating member 218, so that the rotating rod 217 can rotate to push the fixed bar 219 to move, a fixed block 221 is fixedly installed on the outer side of the ventilation hood 201, and an electric push rod 222 is fixedly installed on the upper side of one side of the drying box 1, and the movable end of the electric push rod 222 is fixedly connected to the fixed block 221, and a support rod 223 is symmetrically installed on the other side of the ventilation hood 201, and a positioning block 224 is symmetrically installed on the upper side of the other side of the drying box 1, and the support rod 223 is slidably connected to the positioning block 224, which facilitates the movement of the ventilation hood 201.

[0031] The drying box 1 is symmetrically installed with mounting rods 105 inside, and the two mounting rods 105 are rotatably connected with a rotating shaft 106 inside, and a spiral blade is fixedly installed at the bottom of the rotating shaft 106, and a plurality of rotating blades 107 are symmetrically installed outside the rotating shaft 106, and a driving motor 108 is fixedly installed below the positioning block 224 on one side of the drying box 1, and the output end of the driving motor 108 passes through the drying box 1 and is fixedly installed with a connecting shaft 109, and the outside of the connecting shaft 109 is symmetrically rotatably connected with a limiting frame 110, and the limiting frame 110 is fixedly connected to the upper mounting rod 105, which can be The organic fertilizer is turned over, and a second bevel gear 112 is fixedly installed on one end of the connecting shaft 109, and a first bevel gear 111 is fixedly installed on the outside of the rotating shaft 106 on one side of the second bevel gear 112, and the first bevel gear 111 is meshingly connected with the second bevel gear 112, and a shell 113 is rotatably connected to the outside side of the rotating shaft 106 and the outside side of the connecting shaft 109, and the shell 113 is fixedly connected to the mounting rod 105, and a cleaning rod 114 is fixedly installed on the upper side of the rotating shaft 106, and a silicone strip is provided on the top of the cleaning rod 114, which can clean the bottom of the mesh plate 207.

[0032] Working principle: Before using this agricultural organic fertilizer uniform drying device, you need to check the overall condition of the device to make sure it can work normally. Figure 1 - Figure 5 As shown, a purification component 2 is arranged above the drying box 1. When drying the organic fertilizer, the organic fertilizer is poured into the drying box 1 through the feeding pipe 102, and dried through the drying box 1. During the drying process, the fan 204 is started so that the odorous gas and dust can be drawn upward, and the gas is purified through the activated carbon layer 206 and the mesh plate 207, and then discharged through the ventilation plate 202. When the activated carbon layer 206 and the mesh plate 207 are disassembled, the ventilation hood 201 can be lifted by the electric push rod 222, and then the handle 220 can be rotated to drive the rotating rod 217 to rotate, so that the rotating part 218 rotates and pushes the two fixed bars 219 away from each other, so that the sliding rod 215 moves, and then the connecting plates 212 move away from each other, which can drive the movable rod 210 to move, and the telescopic spring 213 can be stretched, so that the two positioning plates 211 move away from each other and no longer block the mesh plate 207, so that the mesh plate 207 and The fixed frame 205 is disassembled for easy cleaning or replacement. When installing the fixed frame 205 and the mesh plate 207, the fixed frame 205 and the mesh plate 207 are directly placed in the cylinder 2011 and pushed upward. One side of the positioning plate 211 is arc-shaped. The upward movement of the fixed frame 205 and the mesh plate 207 can push the positioning plate 211 to move. The movement of the positioning plate 211 can stretch the telescopic spring 213. After the mesh plate 207 passes through the positioning plate 211, the fixed frame 205 fits the positioning bar 208, and the telescopic spring 213 restores the deformation, so that the positioning plate 211 positions the mesh plate 207, which is convenient for the installation of the fixed frame 205 and the mesh plate 207. The displacement caused by drying the organic fertilizer is purified by the purification component 2, and it is convenient for users to replace or clean the activated carbon layer 206 after lifting it up for use, so as to avoid blockage caused by dust generated by drying and affect the permeability of the gas, which is convenient for users to use and improves convenience and usability.

[0033] When drying the organic fertilizer, start the driving motor 108 to drive the connecting shaft 109 to rotate. After the connecting shaft 109 rotates, the engagement of the first bevel gear 111 and the second bevel gear 112 drives the rotating shaft 106 to rotate. The rotating blade 107 rotates to turn the organic fertilizer, and can drive the spiral blade to rotate, so that the organic fertilizer at the bottom can be pushed upward. After the organic fertilizer is dried, the driving motor 108 can be reversed, so that the spiral blade is reversed, which is convenient for the discharge of the organic fertilizer. The rotating shaft 106 can drive the cleaning rod 114 to rotate during the rotation process. The rotation of the cleaning rod 114 can drive the top silicone strip and the bottom of the mesh plate 207 to be cleaned and wiped to avoid excessive dust adhesion, thereby improving practicality.

[0034] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A uniform drying device for agricultural organic fertilizer, comprising a drying box (1); Two groups of supporting legs (101) are symmetrically mounted on the lower part of the outside of the drying box (1), a feeding pipe (102) is connected through the upper part of the front of the drying box (1), a discharging pipe (103) is connected through the bottom of the drying box (1), and a heating cylinder (104) is arranged inside the drying box (1); It is characterized in that Also includes: A purification component (2) is arranged above the drying box (1); The purification component (2) comprises a ventilation hood (201) arranged above the drying box (1), a ventilation plate (202) being fixedly mounted on the top of the ventilation hood (201), a mounting frame (203) being fixedly mounted on the top of the interior of the ventilation hood (201), a fan (204) being symmetrically mounted inside the mounting frame (203), a cylinder (2011) being fixedly mounted above the interior of the ventilation hood (201), positioning strips (208) being symmetrically mounted on both sides of the interior of the cylinder (2011), a fixing frame (205) being arranged inside the cylinder (2011) below the two positioning strips (208), and an activated carbon layer (206) being arranged inside the fixing frame (205); A mesh plate (207) is provided inside the cylinder (2011) below the activated carbon layer (206), and two groups of fixed frames (209) are symmetrically installed below the two sides of the cylinder (2011), and each group of two fixed frames (209) is slidably connected to a movable rod (210) inside, and a positioning plate (211) is fixedly installed at one end of the two movable rods (210), and the positioning plate (211) is slidably connected to the cylinder (2011), and a connecting plate (212) is fixedly installed at the other end of the two movable rods (210).

2. A uniform drying device for agricultural organic fertilizer according to claim 1, characterized in that: A telescopic spring (213) is sleeved on one side of the outer portion of the movable rod (210), one end of the telescopic spring (213) is fixedly connected to the fixing frame (209), and the other end of the telescopic spring (213) is fixedly connected to the connecting plate (212), and a guide rod (214) is symmetrically slidably connected to one side of the inner portion of the connecting plate (212), and the guide rod (214) is fixedly connected to the cylinder (2011).

3. A uniform drying device for agricultural organic fertilizer according to claim 1, characterized in that: A sliding rod (215) is fixedly installed on the adjacent side of the two connecting plates (212), and a positioning frame (216) is slidably connected to the outer side of the sliding rod (215), and the positioning frame (216) is fixedly connected to the cylinder (2011), and a fixing strip (219) is fixedly installed on the adjacent side of the two sliding rods (215).

4. A uniform drying device for agricultural organic fertilizer according to claim 3, characterized in that: One side of the cylinder (2011) is rotatably connected to a rotating rod (217) located between two fixed bars (219), and a rotating member (218) is fixedly installed on an outer side of the rotating rod (217), and the rotating member (218) is slidably connected to the fixed bar (219), and a handle (220) is fixedly installed on an outer side of the rotating rod (217) close to the rotating member (218).

5. A uniform drying device for agricultural organic fertilizer according to claim 1, characterized in that: A fixing block (221) is fixedly mounted on one side of the outside of the ventilation hood (201), and an electric push rod (222) is fixedly mounted above one side of the drying box (1), and the movable end of the electric push rod (222) is fixedly connected to the fixing block (221), and a support rod (223) is symmetrically mounted on the other side of the ventilation hood (201), and a positioning block (224) is symmetrically mounted above the other side of the drying box (1), and the support rod (223) is slidably connected to the positioning block (224).

6. A uniform drying device for agricultural organic fertilizer according to claim 1, characterized in that: The drying box (1) is symmetrically provided with mounting rods (105) inside, and the two mounting rods (105) are rotatably connected to the inside of a rotating shaft (106), and a spiral blade is fixedly provided at the bottom end of the rotating shaft (106), and a plurality of rotating blades (107) are symmetrically provided outside the rotating shaft (106), and a driving motor (108) is fixedly provided below the positioning block (224) on one side of the drying box (1), and the output end of the driving motor (108) passes through the drying box (1) and is fixedly provided with a connecting shaft (109), and the outside of the connecting shaft (109) is symmetrically rotatably connected to a limiting frame (110), and the limiting frame (110) is fixedly connected to the mounting rods (105) above.

7. A uniform drying device for agricultural organic fertilizer according to claim 6, characterized in that: A second bevel gear (112) is fixedly mounted on one end of the connecting shaft (109), and a first bevel gear (111) is fixedly mounted on the outside of the rotating shaft (106) on one side of the second bevel gear (112), and the first bevel gear (111) is meshingly connected to the second bevel gear (112), and a housing (113) is rotatably connected to an outside side of the rotating shaft (106) and an outside side of the connecting shaft (109), and the housing (113) is fixedly connected to the mounting rod (105), and a cleaning rod (114) is fixedly mounted on one side above the rotating shaft (106), and a silicone strip is provided on the top of the cleaning rod (114).

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