Aggregate drying equipment for hydraulic engineering concrete detection

Abstract

This invention discloses an aggregate drying device for concrete testing in hydraulic engineering, comprising a base, a transfer cylinder, a lifting device, a hot air device, a drying cylinder, a reversing device, and a conveying device. The lifting device conveys the aggregate from the transfer cylinder to the drying cylinder, while the hot air device supplies hot air to the drying cylinder to dry the aggregate. The dried aggregate is then returned to the transfer cylinder via the reversing device and conveyed back to the drying cylinder by the lifting device, thus achieving cyclic drying of the aggregate. The equipment requires a relatively small volume. After drying, the reversing device prevents the dried aggregate from entering the transfer cylinder and allows it to be discharged, enabling switching between drying and unloading. During unloading, new aggregate can be fed into the transfer cylinder via the conveying device, allowing for automatic switching between feeding, unloading, and drying. The one-button operation is simple and significantly reduces the labor intensity of workers.

Description

Technical Field

[0001] This invention relates to the field of water conservancy construction technology, specifically to an aggregate drying device for concrete testing in water conservancy projects. Background Technology

[0002] Water conservancy projects require a large amount of concrete during construction. Concrete is generally made by mixing raw materials such as cement, aggregates and water in a certain proportion. The proportion of raw materials directly affects the quality of concrete. Therefore, in the process of concrete preparation, it is necessary to determine the moisture content of the aggregates. To determine the moisture content of the aggregates, the aggregates need to be dried and then the moisture content is obtained through the difference in quality.

[0003] Chinese patent application number CN201310229810.X discloses an aggregate drying device, which includes a drying drum and a heating device. The aggregate flows in the drying drum, and the heating device is used to heat and dry the aggregate in the drying drum.

[0004] Although the aforementioned patent can achieve continuous drying of aggregates, in order to ensure that the aggregates are fully dried, it is necessary to ensure the residence time of the aggregates in the drying drum. The drying drum needs to be relatively long, which makes the overall size of the equipment relatively large.

[0005] Patent application number CN202122115384.X discloses a rapid drying box for aggregates used in concrete testing for water conservancy and hydropower projects. The aggregates are dried by placing a mesh box to hold them and then placing the mesh box inside the drying box, where hot air is delivered to the drying box by a hot air blower.

[0006] Although the aforementioned patent requires a small volume, during use, it is necessary to manually feed the material into the placement box, then place the placement box into the drying box, and then dry the aggregate. After drying, the aggregate needs to be manually poured out for unloading. In other words, the aforementioned patent cannot automatically realize the process of feeding, drying and unloading, which requires a lot of manual operation, making the operation cumbersome and labor-intensive. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides an aggregate drying device for concrete testing in water conservancy projects. This invention is achieved through the following technical solution.

[0008] An aggregate drying device for concrete testing in water conservancy projects includes a base, a central rotating cylinder, a lifting device, a hot air device, a drying cylinder, and a reversing device.

[0009] A mounting base is fixedly connected to the upper surface of the base, and the bottom of the transfer cylinder is fixedly connected to the mounting base.

[0010] The lifting device includes a lifting cylinder and a lifting motor; a first support rod is uniformly fixed to the bottom circumference of the transfer cylinder; the bottom of the lifting cylinder is open; the lifting cylinder is fixed to the top of the first support rod; a lifting shaft is concentrically rotatably connected inside the lifting cylinder; a spiral lifting blade is fixed to the lifting shaft; a transmission cavity is opened in the center of the base; a sealing bushing is fixed in the integrated structure of the base, mounting base and transfer cylinder; the lifting shaft is rotatably connected in the sealing bushing; the bottom of the lifting shaft extends into the transmission cavity and is fixedly connected to a driven bevel gear; a motor cavity is opened in the base on the right side of the transmission cavity; the lifting motor is fixed in the motor cavity; the lifting motor has a first output shaft pointing horizontally to the right; the first output shaft is rotatably connected in the base; the left end of the first output shaft extends into the transmission cavity and is fixedly connected to a driving bevel gear; the driving bevel gear meshes with the driven bevel gear; the motor cavity is connected to the upper surface of the base through heat dissipation holes; a dustproof net is fixedly connected inside the heat dissipation holes.

[0011] The hot air device includes a support plate and a rotating shaft. The support plate is fixed to the upper surface of the base. A support plate is provided on the front and rear sides and the left side of the central rotating cylinder. A heating chamber is opened in the support plate. A connecting chamber is opened at the top of the heating chamber. A hot air chamber is opened at the top of the connecting chamber. A serpentine heating wire is fixed to the inner wall of the heating chamber. Air supply chambers corresponding to the support plates are opened on the front and rear sides and the left side of the transmission chamber. The rotating shaft is rotatably connected to the air supply chamber. One end of the rotating shaft extends into the transmission chamber and is fixed to a transmission bevel gear. The transmission bevel gear meshes with the driven bevel gear. A fan blade assembly is fixed to the other end of the rotating shaft. When each fan blade assembly rotates, the air at the fan blade assembly position flows in a direction away from the transmission chamber. The air supply chamber is connected to the heating chamber through an air supply channel. The upper part of the air supply chamber is also connected to the upper surface of the base through an air inlet.

[0012] The drying cylinder is fixed to the top of the inner side of the support plate, and a discharge pipe is fixed between the top of the drying cylinder and the top of the side plate of the lifting cylinder. The inner cavity of the drying cylinder is connected to the hot air cavity.

[0013] The reversing device is fixed to the outer wall of the transfer cylinder and is set in a corresponding manner to the drying cylinder. The bottom of each drying cylinder is connected to the transfer cylinder through a corresponding reversing device.

[0014] Furthermore, an insulation cover is fixed to the outer wall of the drying cylinder. The insulation cover is connected to the hot air cavity through a hot air pipe. The insulation cover is fixedly connected to the top of the inner wall of the support plate. A dispersion seat and a concentration ring are arranged alternately inside the insulation cylinder. A cavity is opened at the bottom of the dispersion seat. The dispersion seat is fixed to the drying cylinder through a circumferentially evenly arranged air inlet pipe. One end of the air inlet pipe is connected to the insulation cover, and the other end of the air inlet pipe is connected to the cavity inside the dispersion seat. The upper surface of the dispersion seat is an upwardly arched arc. The concentration ring is fixed to the drying cylinder. The cross-section of the concentration ring is L-shaped. Air inlets are evenly opened circumferentially on the side plate of the drying cylinder corresponding to the position of the concentration ring. A material guide seat is fixed to the upper surface of the concentration ring. The upper surface of the material guide seat is inclined downward in the direction pointing to the center of the drying cylinder. Exhaust holes are evenly opened circumferentially on the top of the drying cylinder. A filter screen is fixed inside the exhaust hole.

[0015] Furthermore, the reversing device includes a reversing cylinder and a reversing block; the reversing cylinder is fixedly connected to the outer wall of the intermediate cylinder and is correspondingly arranged with the drying cylinder, the top of the reversing cylinder is connected to the bottom of the drying cylinder through a feeding pipe, a first mating block is fixedly connected to one end of the reversing cylinder near the intermediate cylinder, and a second mating block is fixedly connected to the other end of the reversing cylinder, the first mating block and the second mating block are arranged on both sides of the feeding pipe, the side of the first mating block and the second mating block that are close to each other is an inclined surface, the reversing block is slidably connected in the reversing cylinder, the reversing block is triangular, the inclined surfaces on both sides of the reversing block are respectively adapted to the inclined surfaces on the first mating block and the second mating block, and a discharge pipe and a return pipe are also fixedly connected to the bottom of the reversing cylinder, the other end of the return pipe is connected to the intermediate cylinder.

[0016] Furthermore, when the reversing block contacts the first mating block, the bottom of the reversing block is offset from the top of the discharge pipe, and when the reversing block contacts the second mating block, the bottom of the reversing block is offset from the top of the return pipe.

[0017] Furthermore, it also includes a sealing device, which includes a sealing ring and a lifting ring; a partition is fixedly connected to the outer wall of the lifting cylinder, and the partition is fixedly connected to the side wall of the transfer cylinder through a second support rod evenly arranged around the circumference. The partition divides the transfer cylinder into an upper feeding chamber and a lower temporary storage chamber. The connection position of the return pipe to the transfer cylinder is located below the partition. A sliding seat is fixedly connected to the upper surface of the partition, and the upper surface of the sliding seat is inclined downward in the direction away from the lifting cylinder. A reset cylinder is fixedly connected to the end of the reversing cylinder away from the transfer cylinder. A sliding plate is slidably connected inside the reset cylinder. Ventilation holes are opened at the end of the reset cylinder away from the reversing cylinder and on the side plate of the reset cylinder near the reversing cylinder. A sliding rod is fixedly connected to the side of the sliding plate near the reversing cylinder, and the sliding rod is slidably connected to a second fitting. Inside the block and the reversing cylinder, the head of the slide rod is fixedly connected to the reversing block. A return spring is sleeved on the slide rod between the slide plate and the reversing cylinder. When the reversing block contacts the second mating block, the return spring is in its natural state. The sealing ring is slidably connected inside the transfer cylinder. A groove is provided in the integral structure of the transfer cylinder, the reversing cylinder, and the first mating block. A rubber plug is fixedly connected in the groove. A rigid pull rope is provided in the groove and slidably connected to the rubber plug. The two ends of the rigid pull rope are fixedly connected to the reversing block and the sealing ring, respectively. A guide seat is fixedly connected to the inner wall of the transfer cylinder at the position corresponding to the rigid pull rope. A support is fixedly connected to the outer wall of the lifting cylinder. The lifting ring is slidably connected to the lifting cylinder. An electric telescopic rod is fixedly connected between the lifting ring and the support. A support rod is uniformly fixedly connected to the circumference between the lifting ring and the sealing ring.

[0018] Furthermore, when the electric telescopic rod is in its minimum retracted state, the reversing block contacts the second mating block, and the sealing ring is located above the material slide seat; when the electric telescopic rod is in its maximum extended state, the reversing block contacts the first mating block, and the sealing ring is located between the material slide seat and the transfer cylinder.

[0019] Furthermore, it also includes a conveying device and an electrical control device. A sand pool is fixedly connected to the right side of the base, and the sand pool contains aggregate. The conveying device includes a conveying cylinder and a conveying motor. A third support rod is uniformly fixed to the bottom circumference of the sand pool. The conveying cylinder is fixed to the top of the third support rod. The conveying motor is fixed to the top of the conveying cylinder. The conveying motor has a vertically downward conveying shaft. The conveying shaft is rotatably connected inside the conveying cylinder. Spiral conveying blades are fixed to the conveying shaft. The left side of the conveying cylinder is connected to the transfer cylinder through a conveying pipe. The electrical device includes an electrical control chamber and a metal connecting ring. The electrical control chamber is fixed to the outer ring of the lifting cylinder and located below the lifting ring. A first electrical contact ring and a second electrical contact ring are fixedly connected to the bottom of the electrical control chamber. The metal connecting ring is slidably connected inside the electrical control chamber. An insulating connecting rod is uniformly fixed to the upper surface of the metal connecting ring. The connecting rod is slidably connected to the top plate of the electrical control chamber. The top of the connecting rod is fixedly connected to the lifting ring.

[0020] When the electric telescopic rod is in its maximum extended state, the metal connecting ring is in contact with the first and second contact rings, and at this time the circuit of the conveying motor is connected.

[0021] Furthermore, it also includes an external DC power supply, a main control switch, and a reversing switch. The positive terminal of the DC power supply is connected to the positive terminals of the lifting motor, each heating wire, the electric telescopic rod, and the conveying motor through the main control switch. The negative terminal of the conveying motor is electrically connected to the first energizing ring. The negative terminal of the electric telescopic rod is electrically connected to the positive terminal of the reversing switch. The negative terminals of the lifting motor, each heating wire, and the reversing switch, as well as the second energizing ring, are electrically connected to the negative terminal of the DC power supply.

[0022] A panel is fixed to the front side of the base, and the main control switch and the reversing switch are fixed to the panel.

[0023] The beneficial effects of this invention are as follows:

[0024] 1. The aggregate in the transfer drum is conveyed to the drying drum by the lifting device. The hot air device is used to deliver hot air to the drying drum to dry the aggregate. After drying, the aggregate flows back to the transfer drum through the reversing device and is conveyed to the drying drum again under the action of the lifting device. This cycle can realize the cyclic drying of aggregate. The equipment requires a small volume.

[0025] 2. After the aggregate is dried, the reversing device can be used to discharge the dried aggregate without it entering the central drum, thus realizing the switching between drying and unloading.

[0026] 3. During the unloading process, new aggregates can be fed into the transfer drum through the conveying device, which can automatically switch between feeding, unloading and drying. The one-button operation is simple and greatly reduces the labor intensity of workers. Attached Figure Description

[0027] To more clearly illustrate the technical solution of the present invention, the accompanying drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 : A schematic diagram of the structure of an aggregate drying device for concrete testing in water conservancy projects according to the present invention;

[0029] Figure 2 : A schematic diagram of the structure of the base described in this invention;

[0030] Figure 3 : A top view of the internal structure of the base described in this invention;

[0031] Figure 4 : A schematic diagram of the drive mechanism of the fan blade assembly and the driven bevel gear described in this invention;

[0032] Figure 5 : A schematic diagram of the internal structure of the support plate described in this invention;

[0033] Figure 6 : A schematic diagram of the internal structure of the drying cylinder described in this invention;

[0034] Figure 7 : A three-dimensional structural schematic diagram of the lifting cylinder described in this invention;

[0035] Figure 8 : A schematic diagram showing the positions of the reversing block, sealing ring, and metal connecting ring of the electric telescopic rod in its minimum retracted state according to the present invention;

[0036] Figure 9 : Figure 8 A magnified view of a portion at point A shown;

[0037] Figure 10 : A schematic diagram showing the positions of the reversing block, sealing ring, and metal connecting ring of the electric telescopic rod when it is in its maximum extension state;

[0038] Figure 11 : Figure 10 A magnified view of a portion at point B shown;

[0039] Figure 12 : Figure 10 A magnified view of a portion at point C shown;

[0040] Figure 13 : A schematic diagram of the circuit connections of each circuit element in this invention.

[0041] The attached figures are labeled as follows:

[0042] 1-Base,

[0043] 2-Transfer cylinder, 21-Mounting base,

[0044] 31-Lifting cylinder, 32-Lifting motor, 33-First support rod, 34-Lifting shaft, 35-Lifting blade, 36-Transmission cavity, 37-Sealed bushing, 38-Driven bevel gear, 39-Motor cavity, 310-First output shaft, 311-Driven bevel gear, 312-Heat dissipation hole, 313-Dustproof screen

[0045] 41-Support plate, 42-Rotating shaft, 43-Support plate, 44-Heating chamber, 45-Connecting chamber, 46-Hot air chamber, 47-Heating wire, 48-Air supply chamber, 49-Transmission bevel gear, 410-Fan blade assembly, 411-Air supply duct, 412-Air inlet.

[0046] 5-Drying cylinder, 51-Feed pipe, 52-Insulation cover, 53-Hot air pipe, 54-Dispersion seat, 55-Concentrating ring, 56-Air inlet pipe, 57-Air inlet, 58-Guide seat, 59-Exhaust hole, 510-Filter screen

[0047] 6-Reversing device; 61-Reversing cylinder; 62-Reversing block; 63-Discharge pipe; 64-First mating block; 65-Second mating block; 66-Discharge pipe; 67-Return pipe; 68-Reset cylinder; 69-Slide plate; 610-Slide rod; 611-Reset spring.

[0048] 71-Sealing ring, 72-Lifting ring, 73-Baffle plate, 74-Second support rod, 75-Sliding material seat, 76-Wire trough, 77-Rubber plug, 78-Rigid pull rope, 79-Guide seat, 710-Support, 711-Electric telescopic rod, 712-Support rod

[0049] 81-Conveyor cylinder, 82-Conveyor motor, 83-Sand pit, 84-Aggregate, 85-Third support rod, 86-Conveyor shaft, 87-Conveyor blades, 88-Conveyor pipe,

[0050] 91-Electrical control compartment, 92-Metal connecting ring, 93-First electrical contact ring, 94-Second electrical contact ring, 95-Connecting rod.

[0051] 1001-DC power supply, 1002-Main control switch, 1003-Reverse switch, 1004-Panel. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] like Figure 1-13 As shown, the present invention has the following six specific embodiments.

[0054] Example 1

[0055] An aggregate drying device for concrete testing in water conservancy projects includes a base 1, a central rotating cylinder 2, a lifting device, a hot air device, a drying cylinder 5, and a reversing device 6.

[0056] A mounting base 21 is fixedly connected to the upper surface of the base 1, and the bottom of the transfer cylinder 2 is fixedly connected to the mounting base 21.

[0057] The lifting device includes a lifting cylinder 31 and a lifting motor 32; a first support rod 33 is evenly fixed to the bottom circumference of the transfer cylinder 2; the bottom of the lifting cylinder 31 is open; the lifting cylinder 31 is fixed to the top of the first support rod 33; a lifting shaft 34 is concentrically rotatably connected inside the lifting cylinder 31; a spiral lifting blade 35 is fixed to the lifting shaft 34; a transmission cavity 36 is opened in the center of the base 1; a sealing bushing 37 is fixed in the integrated structure of the base 1, the mounting base 21, and the transfer cylinder 2; the lifting shaft 34 is rotatably connected in the sealing bushing 37; and the bottom of the lifting shaft 34 extends into the transmission cavity. A driven bevel gear 38 is fixedly connected inside the cavity 36. A motor cavity 39 is opened in the base 1 on the right side of the transmission cavity 36. The lifting motor 32 is fixedly connected in the motor cavity 39. The lifting motor 32 has a first output shaft 310 that is horizontally to the right. The first output shaft 310 is rotatably connected in the base 1. The left end of the first output shaft 310 extends into the transmission cavity 36 and is fixedly connected to a driving bevel gear 311. The driving bevel gear 311 meshes with the driven bevel gear 38. The motor cavity 39 is connected to the upper surface of the base 1 through a heat dissipation hole 312. A dustproof net 313 is fixedly connected in the heat dissipation hole 312.

[0058] The hot air device includes a support plate 41 and a rotating shaft 42. The support plate 41 is fixed to the upper surface of the base 1. A support plate 41 is provided on each of the front and rear sides and the left side of the central rotating cylinder 2. A heating chamber 43 is formed inside the support plate 41. A connecting chamber 44 is formed at the top of the heating chamber 43. A hot air chamber 45 is formed at the top of the connecting chamber 44. A serpentine heating wire 46 is fixed to the inner wall of the heating chamber 43. Air supply chambers 47 corresponding to the support plate 41 are formed on the front and rear sides and the left side of the transmission chamber 36. The rotating shaft 42... 2. Rotary connection is made in the air supply chamber 47. One end of the rotating shaft 42 extends into the transmission chamber 36 and is fixedly connected to the transmission bevel gear 48. The transmission bevel gear 48 meshes with the driven bevel gear 38. The other end of the rotating shaft 42 is fixedly connected to the fan blade assembly 49. When each fan blade assembly 49 rotates, the air at the position of the fan blade assembly 49 flows in the direction away from the transmission chamber 36. The air supply chamber 47 is connected to the heating chamber 43 through the air supply channel 410. The upper part of the air supply chamber 47 is also connected to the upper surface of the base 1 through the air inlet hole 411.

[0059] The drying cylinder 5 is fixed to the top of the inner side of the support plate 41. A discharge pipe 51 is fixed between the top of the drying cylinder 5 and the top of the side plate of the lifting cylinder 31. The inner cavity of the drying cylinder 5 is connected to the hot air cavity 45.

[0060] The reversing device 6 is fixed to the outer wall of the intermediate drum 2 and is set in a corresponding manner to the drying drum 5. The bottom of each drying drum 5 is connected to the intermediate drum 2 through the corresponding reversing device 6.

[0061] In this embodiment:

[0062] When drying aggregate 84, the aggregate 84 to be dried is placed in the central drum 2, and then the lifting motor 32 and heating wire 46 are started.

[0063] When the lifting motor 32 is working, it drives the first output shaft 310 and the driving bevel gear 311 to rotate. The driven bevel gear 38, which meshes with the driving bevel gear 311, rotates, thereby causing the lifting shaft 34 and the lifting blades 35 to rotate. The aggregate 84 in the transfer bin enters the lifting cylinder 31 through the position of the first support rod 33. When the lifting blades 35 rotate, they transport the aggregate 84 from bottom to top and enter the corresponding drying cylinder 5 through each drop pipe 51.

[0064] The heat dissipation hole 312 can dissipate heat from the lifting motor 32 during operation, and the dustproof net 313 can prevent dust from entering the motor cavity 39.

[0065] When the hot air device is working, the hot air generated enters the drying cylinder 5 to dry the aggregate 84. After drying, the aggregate 84 flows back to the transfer cylinder 2 and is then conveyed back to the drying cylinder 5 by the lifting device. In this way, the aggregate 84 can be dried in a cycle, and the required volume of the equipment is reduced.

[0066] When the driven bevel gear 38 rotates, it also drives each transmission bevel gear 48 to rotate, which in turn causes the shaft 42 and the fan blade assembly 49 to rotate. When the fan blade assembly 49 rotates, outside air enters the air supply chamber 47 through the air inlet 411. The air in the air supply chamber 47 enters the heating chamber 43 through the air supply channel 410. Under the action of the heating wire 46, the air is heated. The hot air enters the hot air chamber 45 through the connecting chamber 44 and finally enters the drying cylinder 5 to perform the drying function.

[0067] Example 2

[0068] The difference from Example 1 is that this example discloses the specific technical features of the drying cylinder 5, which is used to improve the drying efficiency.

[0069] A heat insulation cover 52 is fixedly attached to the outer wall of the drying cylinder 5. The heat insulation cover 52 is connected to the hot air chamber 45 through a hot air pipe 53. The heat insulation cover 52 is fixedly connected to the top of the inner wall of the support plate 41. A dispersion seat 54 and a concentration ring 55 are arranged alternately inside the heat insulation cylinder. A cavity is opened at the bottom of the dispersion seat 54. The dispersion seat 54 is fixed in the drying cylinder 5 through air inlet pipes 56 evenly arranged around the circumference. One end of the air inlet pipe 56 is connected to the heat insulation cover 52, and the other end of the air inlet pipe 56 is connected to the cavity inside the dispersion seat 54. The upper surface of the dispersing seat 54 is an upwardly arched arc. The concentrating ring 55 is fixed in the drying cylinder 5. The cross-section of the concentrating ring 55 is L-shaped. Air inlets 57 are evenly distributed around the side plate of the drying cylinder 5 at the position corresponding to the concentrating ring 55. A guide seat 58 is fixed to the upper surface of the concentrating ring 55. The upper surface of the guide seat 58 is inclined downward in the direction pointing to the center of the drying cylinder 5. Exhaust holes 59 are evenly distributed around the top of the drying cylinder 5. A filter screen 510 is fixed inside the exhaust hole 59.

[0070] In this embodiment:

[0071] The hot air in the hot air chamber 45 enters the heat preservation cover 52 through the hot air pipe 53, and then enters the drying cylinder 5 through the air inlet pipe 56 and the air inlet 57.

[0072] Aggregate 84 enters the drying cylinder 5 through the discharge pipe 51. The dispersion seat 54 can disperse the aggregate 84, and the guide seat 58 and the concentration ring 55 can gather the aggregate 84. The aggregate 84 is continuously gathered and dispersed in the drying cylinder 5, which improves the drying efficiency of the aggregate 84.

[0073] The moisture generated during the drying process can be discharged through the exhaust port 59, and the filter screen 510 can reduce dust emissions.

[0074] Example 3

[0075] The difference from Embodiment 2 is that this embodiment discloses the specific technical features of the reversing device 6, which is used to switch the flow direction of aggregate 84.

[0076] The reversing device 6 includes a reversing cylinder 61 and a reversing block 62. The reversing cylinder 61 is fixed to the outer wall of the intermediate cylinder 2 and is correspondingly arranged with the drying cylinder 5. The top of the reversing cylinder 61 is connected to the bottom of the drying cylinder 5 through a feeding pipe 63. A first mating block 64 is fixedly connected to one end of the reversing cylinder 61 near the intermediate cylinder 2, and a second mating block 65 is fixedly connected to the other end of the reversing cylinder 61. The first mating block 64 and the second mating block 65 are arranged on both sides of the feeding pipe 63. The side of the first mating block 64 and the second mating block 65 that are close to each other is an inclined surface. The reversing block 62 is slidably connected inside the reversing cylinder 61. The reversing block 62 is triangular, and the inclined surfaces on both sides of the reversing block 62 are adapted to the inclined surfaces on the first mating block 64 and the second mating block 65, respectively. A discharge pipe 66 and a return pipe 67 are also fixedly connected to the bottom of the reversing cylinder 61. The other end of the return pipe 67 is connected to the intermediate cylinder 2.

[0077] Preferably, when the reversing block 62 contacts the first mating block 64, the bottom of the reversing block 62 is offset from the top of the discharge pipe 66, and when the reversing block 62 contacts the second mating block 65, the bottom of the reversing block 62 is offset from the top of the return pipe 67.

[0078] In this embodiment:

[0079] When drying aggregate 84, if Figure 8 As shown, the reversing block 62 contacts the second mating block 65, thereby opening the top of the return pipe 67. The aggregate 84 in the drying cylinder 5 enters the reversing cylinder 61 through the feeding pipe 63, and then enters the transfer cylinder 2 through the return pipe 67. Under the action of the lifting device, the aggregate 84 continuously flows between the drying cylinder 5 and the transfer cylinder 2, thus realizing the cyclic drying of the aggregate 84.

[0080] After aggregate 84 is dried, the annular block contacts the first mating block 64, as follows. Figure 10 As shown, at this time, the discharge pipe 66 is opened, and the aggregate 84 in the drying cylinder 5 enters the reversing cylinder 61 through the feeding pipe 63, and then is discharged to the outside through the discharge pipe 66, thus realizing the unloading operation of the aggregate 84.

[0081] By setting the reversing device 6, the aggregate 84 can be continuously switched between the drying and unloading processes.

[0082] Example 4

[0083] The difference from Embodiment 3 is that this embodiment discloses the specific technical features of the sealing device, which is used to isolate the feeding chamber and the temporary storage chamber during unloading, so that the aggregate 84 can be transported into the feeding chamber.

[0084] It also includes a sealing device, which includes a sealing ring 71 and a lifting ring 72; a partition 73 is fixedly connected to the outer wall of the lifting cylinder 31, and the partition 73 is fixedly connected to the side wall of the transfer cylinder 2 through a second support rod 74 evenly arranged around the circumference. The partition 73 divides the transfer cylinder 2 into an upper feeding chamber and a lower temporary storage chamber. The connection position of the return pipe 67 to the transfer cylinder 2 is located below the partition 73. A sliding seat 75 is fixedly connected to the upper surface of the partition 73, and the upper surface of the sliding seat 75 is along the back The reversing cylinder 61 is inclined downwards from the direction of the lifting cylinder 31. A reset cylinder 68 is fixedly connected to the end of the reversing cylinder 61 away from the intermediate cylinder 2. A sliding plate 69 is slidably connected inside the reset cylinder 68. Ventilation holes are provided at the end of the reset cylinder 68 away from the reversing cylinder 61 and on the side plate of the reset cylinder 68 near the reversing cylinder 61. A sliding rod 610 is fixedly connected to the side of the sliding plate 69 near the reversing cylinder 61. The sliding rod 610 is slidably connected to the second mating block 65 and inside the reversing cylinder 61. The head is fixedly connected to the reversing block 62. A return spring 611 is sleeved on the slide rod 610 between the slide plate 69 and the reversing cylinder 61. When the reversing block 62 contacts the second mating block 65, the return spring 611 is in its natural state. The sealing ring 71 is slidably connected inside the transfer cylinder 2. A wire groove 76 is opened in the integral structure of the transfer cylinder 2, the reversing cylinder 61 and the first mating block 64. A rubber plug 77 is fixedly connected in the wire groove 76. The wire groove 76 is provided with a connection to the rubber plug 77. A rigid pull rope 78 is slidably connected. Both ends of the rigid pull rope 78 are fixedly connected to the reversing block 62 and the sealing ring 71, respectively. A guide seat 79 is fixedly connected to the inner wall of the transfer cylinder 2 at the position corresponding to the rigid pull rope 78. A support 710 is fixedly connected to the outer wall of the lifting cylinder 31. The lifting ring 72 is slidably connected to the lifting cylinder 31. An electric telescopic rod 711 is fixedly connected between the lifting ring 72 and the support 710. A support rod 712 is evenly fixedly connected to the circumference of the lifting ring 72 and the sealing ring 71.

[0085] Preferably, when the electric telescopic rod 711 is in its minimum retracted state, the reversing block 62 is in contact with the second mating block 65, and the sealing ring 71 is located above the sliding seat 75; when the electric telescopic rod 711 is in its maximum extended state, the reversing block 62 is in contact with the first mating block 64, and the sealing ring 71 is located between the sliding seat 75 and the central transfer cylinder 2.

[0086] In this embodiment:

[0087] like Figure 8 As shown, when the aggregate 84 is drying, the electric telescopic rod 711 is in the minimum retracted state. Under the action of the reset spring 611, the reversing block 62 contacts the second mating block 65. At this time, the aggregate 84 is circulated and dried.

[0088] When aggregate 84 is dried, the electric telescopic rod 711 extends, driving the lifting ring 72 to descend. Under the action of the support rod 712, the sealing ring 71 descends. During the descent of the sealing ring 71, the reversing block 62 is moved by the rigid pull rope 78. When the electric telescopic rod 711 reaches its maximum extension state, the reversing block 62 contacts the first mating block 64, and the sealing ring 71 enters between the sliding seat 75 and the transfer cylinder 2, thereby separating the feeding chamber and the temporary storage chamber. At this point, the material is ready for use. Figure 10 The state shown.

[0089] At this time, when the lifting device is working, it can continuously transport the aggregate 84 in the temporary storage chamber to the drying cylinder 5, and the aggregate 84 in the drying cylinder 5 is discharged in sequence through the feeding pipe 63, the reversing cylinder 61 and the discharge pipe 66.

[0090] At this time, new aggregate 84 can be conveyed into the feeding chamber. Due to the setting of the sealing ring 71, the new undried aggregate 84 cannot enter the temporary storage chamber, so the dried material will not be contaminated.

[0091] Example 5

[0092] The difference from Embodiment 4 is that this embodiment discloses the specific technical features of the conveying device and the electric device, which are used to simultaneously complete the feeding operation during unloading.

[0093] It also includes a conveying device and an electrical control device. A sand tank 83 is fixedly connected to the right side of the base 1. The sand tank 83 contains aggregate 84. The conveying device includes a conveying cylinder 81 and a conveying motor 82. A third support rod 85 is evenly fixed to the bottom circumference of the sand tank 83. The conveying cylinder 81 is fixed to the top of the third support rod 85. The conveying motor 82 is fixed to the top of the conveying cylinder 81. The conveying motor 82 is equipped with a vertically downward conveying shaft 86. The conveying shaft 86 is rotatably connected inside the conveying cylinder 81. A spiral conveying blade 87 is fixed to the conveying shaft 86. The conveying cylinder 81... The left side is connected to the transfer cylinder 2 via a conveying pipe 88; the electric device includes an electric control chamber 91 and a metal connecting ring 92; the electric control chamber 91 is fixed to the outer ring of the lifting cylinder and located below the lifting ring 72; the bottom of the electric control chamber 91 is fixedly connected to a first connecting ring 93 and a second connecting ring 94; the metal connecting ring 92 is slidably connected inside the electric control chamber 91; an insulating connecting rod 95 is uniformly fixed to the upper surface of the metal connecting ring 92; the connecting rod 95 is slidably connected to the top plate of the electric control chamber 91; and the top of the connecting rod 95 is fixedly connected to the lifting ring 72.

[0094] When the electric telescopic rod 711 is in its maximum extended state, the metal connecting ring 92 contacts the first electrical contact ring 93 and the second electrical contact ring 94, and at this time the circuit of the conveying motor 82 is connected.

[0095] In this embodiment:

[0096] like Figure 8 As shown, when the electric telescopic rod 711 is in its minimum retracted state, the aggregate 84 is circulated and dried; as Figure 10 As shown, when the electric telescopic rod 711 is in its maximum extension state, the material is discharged after drying. At this time, under the pushing action of the lifting ring 72 and the connecting rod 95, the metal connecting ring 92 descends and contacts the first electrical contact ring 93 and the second electrical contact ring 94, thereby connecting the circuit of the conveying motor 82.

[0097] When the conveyor motor 82 is working, it drives the conveyor shaft 86 and the conveyor blades 87 to rotate. The aggregate 84 in the sand pool 83 enters the conveyor cylinder 81 through the position of the third support rod 85. Under the action of the conveyor blades 87, the aggregate 84 enters the feeding chamber through the conveyor pipe 88.

[0098] That is, during the unloading process, the conveying device works synchronously to transport the aggregate 84 in the sand pool 83 to the feeding chamber.

[0099] Example 6

[0100] The difference from Embodiment 5 is that this embodiment also discloses the following:

[0101] It also includes an external DC power supply 1001, a main control switch 1002, and a reversing switch 1003. The positive terminal of the DC power supply 1001 is connected to the positive terminals of the lifting motor 32, each heating wire 46, the electric telescopic rod 711, and the conveying motor 82 through the main control switch 1002. The negative terminal of the conveying motor 82 is electrically connected to the first contact ring 93. The negative terminal of the electric telescopic rod 711 is electrically connected to the positive terminal of the reversing switch 1003. The negative terminals of the lifting motor 32, each heating wire 46, and the reversing switch 1003, as well as the second contact ring 94, are electrically connected to the negative terminal of the DC power supply 1001.

[0102] A panel 1004 is fixedly attached to the front side of the base 1, and the main control switch 1002 and the reversing switch 1003 are fixedly attached to the panel 1004.

[0103] In this embodiment:

[0104] like Figure 13 As shown, the specific workflow of this invention is as follows:

[0105] The reversing switch 1003 has a braking position, a reversing position, and a forward position. When it is in the braking position, the electric telescopic rod 711 is braked. When it is in the reversing position, the electric telescopic rod 711 is shortened. When it is in the forward position, the electric telescopic rod 711 is extended. In the initial state, the electric telescopic rod 711 is in the minimum shortened state, and the reversing switch 1003 is in the braking position.

[0106] The transfer chamber contains a certain amount of aggregate 84 to be dried. When the main control switch 1002 is turned on, the lifting motor 32 and the heating wire 46 work, and the aggregate 84 in the transfer drum 2 is then circulated and dried.

[0107] When the reversing switch 1003 is in the forward position, the electric telescopic rod 711 extends and drives the sealing ring 71 to descend. Under the action of the rigid pull rope 78, the reversing block 62 moves towards the first mating block 64. When the electric telescopic rod 711 reaches its maximum extension state, the reversing switch 1003 is placed in the braking position.

[0108] At this time, the dried aggregate 84 is unloaded, and the sealing ring 71 separates the feeding chamber and the temporary storage chamber. At this time, the electric motor 82 is turned on, and new aggregate 84 is input into the feeding chamber of the conveying device box.

[0109] After unloading and loading are completed, return the electric telescopic rod 711 to its minimum retracted state and then brake it.

[0110] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An aggregate drying device for concrete testing in water conservancy projects, characterized in that: It includes a base, a transfer cylinder, a lifting device, a hot air device, a drying cylinder, and a reversing device; A mounting base is fixedly connected to the upper surface of the base, and the bottom of the transfer cylinder is fixedly connected to the mounting base. The lifting device includes a lifting cylinder and a lifting motor; a first support rod is uniformly fixed to the bottom circumference of the transfer cylinder; the bottom of the lifting cylinder is open; the lifting cylinder is fixed to the top of the first support rod; a lifting shaft is concentrically rotatably connected inside the lifting cylinder; a spiral lifting blade is fixed to the lifting shaft; a transmission cavity is opened in the center of the base; a sealing bushing is fixed in the integrated structure of the base, mounting base and transfer cylinder; the lifting shaft is rotatably connected in the sealing bushing; the bottom of the lifting shaft extends into the transmission cavity and is fixedly connected to a driven bevel gear; a motor cavity is opened in the base on the right side of the transmission cavity; the lifting motor is fixed in the motor cavity; the lifting motor has a first output shaft pointing horizontally to the right; the first output shaft is rotatably connected in the base; the left end of the first output shaft extends into the transmission cavity and is fixedly connected to a driving bevel gear; the driving bevel gear meshes with the driven bevel gear; the motor cavity is connected to the upper surface of the base through heat dissipation holes; a dustproof net is fixedly connected inside the heat dissipation holes. The hot air device includes a support plate and a rotating shaft. The support plate is fixed to the upper surface of the base. A support plate is provided on the front and rear sides and the left side of the central rotating cylinder. A heating chamber is opened in the support plate. A connecting chamber is opened at the top of the heating chamber. A hot air chamber is opened at the top of the connecting chamber. A serpentine heating wire is fixed to the inner wall of the heating chamber. Air supply chambers corresponding to the support plates are opened on the front and rear sides and the left side of the transmission chamber. The rotating shaft is rotatably connected to the air supply chamber. One end of the rotating shaft extends into the transmission chamber and is fixed to a transmission bevel gear. The transmission bevel gear meshes with the driven bevel gear. A fan blade assembly is fixed to the other end of the rotating shaft. When each fan blade assembly rotates, the air at the fan blade assembly position flows in a direction away from the transmission chamber. The air supply chamber is connected to the heating chamber through an air supply channel. The upper part of the air supply chamber is also connected to the upper surface of the base through an air inlet. The drying cylinder is fixed to the top of the inner side of the support plate, and a discharge pipe is fixed between the top of the drying cylinder and the top of the side plate of the lifting cylinder. The inner cavity of the drying cylinder is connected to the hot air cavity. The reversing device is fixed to the outer wall of the transfer cylinder and is correspondingly arranged with the drying cylinder. The bottom of each drying cylinder is connected to the transfer cylinder through the corresponding reversing device. The reversing device includes a reversing cylinder and a reversing block; the reversing cylinder is fixed to the outer wall of the intermediate cylinder and is correspondingly arranged with the drying cylinder. The top of the reversing cylinder is connected to the bottom of the drying cylinder through a feeding pipe. A first mating block is fixedly connected to one end of the reversing cylinder near the intermediate cylinder, and a second mating block is fixedly connected to the other end of the reversing cylinder. The first mating block and the second mating block are arranged on both sides of the feeding pipe. The side of the first mating block and the second mating block that is close to each other is an inclined surface. The reversing block is slidably connected inside the reversing cylinder. The reversing block is triangular, and the inclined surfaces on both sides of the reversing block are adapted to the inclined surfaces on the first mating block and the second mating block, respectively. A discharge pipe and a return pipe are also fixedly connected to the bottom of the reversing cylinder. The other end of the return pipe is connected to the intermediate cylinder. It also includes a sealing device, which comprises a sealing ring and a lifting ring; a partition is fixedly connected to the outer wall of the lifting cylinder, and the partition is fixedly connected to the side wall of the transfer cylinder by a second support rod evenly arranged around the circumference. The partition divides the transfer cylinder into an upper feeding chamber and a lower temporary storage chamber. The connection position of the return pipe to the transfer cylinder is located below the partition. A sliding seat is fixedly connected to the upper surface of the partition, and the upper surface of the sliding seat is inclined downward in the direction away from the lifting cylinder. A reset cylinder is fixedly connected to the end of the reversing cylinder away from the transfer cylinder. A sliding plate is slidably connected inside the reset cylinder. Ventilation holes are opened at the end of the reset cylinder away from the reversing cylinder and on the side plate of the reset cylinder near the reversing cylinder. A sliding rod is fixedly connected to the side of the sliding plate near the reversing cylinder, and the sliding rod is slidably connected to the second mating block. Inside the reversing cylinder, the head of the sliding rod is fixedly connected to the reversing block. A return spring is sleeved on the sliding rod between the sliding plate and the reversing cylinder. When the reversing block contacts the second mating block, the return spring is in its natural state. The sealing ring is slidably connected inside the transfer cylinder. A groove is provided in the integral structure of the transfer cylinder, the reversing cylinder, and the first mating block. A rubber plug is fixedly connected in the groove. A rigid pull rope is provided in the groove and slidably connected to the rubber plug. The two ends of the rigid pull rope are fixedly connected to the reversing block and the sealing ring, respectively. A guide seat is fixedly connected to the inner wall of the transfer cylinder at the position corresponding to the rigid pull rope. A support is fixedly connected to the outer wall of the lifting cylinder. The lifting ring is slidably connected to the lifting cylinder. An electric telescopic rod is fixedly connected between the lifting ring and the support. A support rod is uniformly fixedly connected to the circumference between the lifting ring and the sealing ring.

2. The aggregate drying equipment for concrete testing in water conservancy projects according to claim 1, characterized in that: A heat insulation cover is fixed to the outer wall of the drying cylinder. The heat insulation cover is connected to the hot air cavity through a hot air pipe. The heat insulation cover is fixedly connected to the top of the inner wall of the support plate. A dispersion seat and a concentration ring are arranged alternately inside the heat insulation cylinder. A cavity is opened at the bottom of the dispersion seat. The dispersion seat is fixed to the drying cylinder through a circumferentially evenly arranged air inlet pipe. One end of the air inlet pipe is connected to the heat insulation cover, and the other end of the air inlet pipe is connected to the cavity inside the dispersion seat. The upper surface of the dispersion seat is an upwardly arched arc. The concentration ring is fixed to the drying cylinder. The cross-section of the concentration ring is L-shaped. Air inlets are evenly opened circumferentially on the side plate of the drying cylinder corresponding to the position of the concentration ring. A material guide seat is fixed to the upper surface of the concentration ring. The upper surface of the material guide seat is inclined downward in the direction pointing to the center of the drying cylinder. Exhaust holes are evenly opened circumferentially on the top of the drying cylinder. A filter screen is fixed to the exhaust hole.

3. The aggregate drying equipment for concrete testing in water conservancy projects according to claim 1, characterized in that: When the reversing block contacts the first mating block, the bottom of the reversing block is offset from the top of the discharge pipe; when the reversing block contacts the second mating block, the bottom of the reversing block is offset from the top of the return pipe.

4. The aggregate drying equipment for concrete testing in water conservancy projects according to claim 1, characterized in that: When the electric telescopic rod is in its minimum retracted state, the reversing block contacts the second mating block, and the sealing ring is located above the material sliding seat; when the electric telescopic rod is in its maximum extended state, the reversing block contacts the first mating block, and the sealing ring is located between the material sliding seat and the central rotating cylinder.

5. The aggregate drying equipment for concrete testing in water conservancy projects according to claim 1, characterized in that: It also includes a conveying device and an electrical control device. A sand pool is fixedly connected to the right side of the base, and the sand pool contains aggregate. The conveying device includes a conveying cylinder and a conveying motor. A third support rod is uniformly fixed to the bottom circumference of the sand pool. The conveying cylinder is fixed to the top of the third support rod. The conveying motor is fixed to the top of the conveying cylinder. The conveying motor has a vertically downward conveying shaft. The conveying shaft is rotatably connected inside the conveying cylinder. Spiral conveying blades are fixed to the conveying shaft. The left side of the conveying cylinder is connected to the transfer cylinder through a conveying pipe. The electrical control device includes an electrical control chamber and a metal connecting ring. The electrical control chamber is fixed to the outer ring of the lifting cylinder and located below the lifting ring. A first electrical contact ring and a second electrical contact ring are fixedly connected to the bottom of the electrical control chamber. The metal connecting ring is slidably connected inside the electrical control chamber. Insulating connecting rods are uniformly fixed to the upper surface of the metal connecting ring. The connecting rods are slidably connected to the top plate of the electrical control chamber. The top of the connecting rods is fixedly connected to the lifting ring. When the electric telescopic rod is in its maximum extended state, the metal connecting ring is in contact with the first and second contact rings, and at this time the circuit of the conveying motor is connected.

6. The aggregate drying equipment for concrete testing in water conservancy projects according to claim 5, characterized in that: It also includes an external DC power supply, a main control switch, and a reversing switch. The positive terminal of the DC power supply is connected to the positive terminals of the lifting motor, each heating wire, the electric telescopic rod, and the conveying motor through the main control switch. The negative terminal of the conveying motor is electrically connected to the first energizing ring. The negative terminal of the electric telescopic rod is electrically connected to the positive terminal of the reversing switch. The negative terminals of the lifting motor, each heating wire, and the reversing switch, as well as the second energizing ring, are electrically connected to the negative terminal of the DC power supply. A panel is fixed to the front side of the base, and the main control switch and the reversing switch are fixed to the panel.

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