A dust-free gravel method for building engineering inspection

Abstract

The present invention discloses a dust-free gravel method for building engineering inspection, belonging to the field of building engineering inspection. A dust-free gravel method for building engineering inspection comprises the following steps: Step 1: Select the building engineering stones to be inspected; Step 2: Open the gravel device, place the stones to be inspected into the gravel device, and seal the gravel device; Step 3: Start the gravel device to crush the stones to be inspected. Through the up-and-down jolting of the jolting plate, on the one hand, it promotes the separation of the stones placed on the top of the jolting plate before crushing from the dust, reduces the dust content of the stones entering the crushing mechanism, thereby reducing the amount of dust generated during the crushing of the stones. On the other hand, it realizes the cleaning of the dust filter screen, prevents a large amount of dust from adhering to the outer surface of the dust filter screen due to the air extraction effect, which affects the air circulation, thereby reducing the dust content during the crushing of the stones and ensuring the dust extraction efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of construction engineering detection, and particularly to a dust-free gravel crushing method for construction engineering detection. Background Art

[0002] In construction engineering, the quality of stone materials is crucial for the safety and durability of buildings. Therefore, the detection of stone materials is a key link to ensure construction quality. The detection of stone materials mainly includes the following performance aspects: Physical properties: This includes the density, water absorption rate, porosity, etc. of the stone materials, and these properties reflect the internal structure of the stone materials and their adaptability to the external environment. Mechanical properties: including the compressive strength, flexural strength, abrasion resistance, etc. of the stone materials, and these properties determine the reaction of the stone materials when subjected to external forces, and have an important impact on the bearing capacity and durability of buildings. Chemical properties: including the acid resistance, alkali resistance, corrosion resistance, etc. of the stone materials, and these properties reflect the stability of the stone materials in a chemical environment and have an important impact on the durability of buildings. Thermal properties: including the thermal conductivity coefficient, thermal expansion coefficient, etc. of the stone materials, and these properties determine the behavior of the stone materials under temperature changes and have an important impact on the heat insulation performance and durability of buildings. Environmental properties: including the radioactivity, harmful substance content, etc. of the stone materials, and these properties reflect the impact of the stone materials on the environment and human health and have an important impact on the environmental protection performance and safety of buildings.

[0003] However, before detecting the quality of stone materials, since the particle size of the stone materials is relatively large, it is necessary to crush the stone materials to make the particle size of the stone materials smaller for the convenience of subsequent stone material quality detection. During the process of crushing the stone materials, although an exhaust fan is used to extract the dust generated during the crushing process of the stone materials, the situation of filter screen blockage is likely to occur, affecting the dust extraction efficiency. And during the process of crushing the stone materials, due to the long-term operation of the crushing roller, the temperature of the crushing roller will rise, aggravating the wear of the crushing roller. At the same time, due to the rise in the temperature of the crushing roller, the moisture contained in the stone materials will evaporate, thus affecting the accuracy of the detection of the stone materials. Based on this, a dust-free gravel crushing method for construction engineering detection is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems in the prior art that when using an exhaust fan to extract the dust generated during the crushing process of stone materials, the situation of filter screen blockage is likely to occur, affecting the dust extraction efficiency, and during the process of crushing the stone materials, due to the long-term operation of the crushing roller, the temperature of the crushing roller will rise, aggravating the wear of the crushing roller. At the same time, due to the rise in the temperature of the crushing roller, the moisture contained in the stone materials will evaporate, thus affecting the accuracy of the detection of the stone materials, and to propose a dust-free gravel crushing method for construction engineering detection.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A dust-free gravel method for building engineering detection, comprising the following steps:

[0007] Step 1: Select the stones for building engineering to be detected;

[0008] Step 2: Open the gravel device, place the stones to be detected into the gravel device, and seal the gravel device;

[0009] Step 3: Start the gravel device to crush the stones to be detected;

[0010] Step 4: After the crushing is completed, turn off the gravel device and take out the crushed stones from the gravel device.

[0011] Preferably, the gravel device includes a gravel box; a crushing mechanism is installed in the gravel box, the crushing mechanism is used to crush the stones, and a blowing mechanism is installed on the crushing mechanism, the blowing mechanism rotates with the rotation of the crushing mechanism, and the blowing mechanism is driven by the crushing mechanism; a material-turning mechanism installed in the gravel box, the material-turning mechanism is used to perform a material-turning operation on the stones before crushing, so that the dust in the stones is separated from the stones; a dust extraction mechanism installed on the gravel box, the dust extraction mechanism is communicated with the crushing mechanism, and the gas extracted by the dust extraction mechanism enters the crushing mechanism and is sprayed into the stones during the crushing process when the blowing mechanism is driven by the crushing mechanism.

[0012] In order to crush the stones, further, the crushing mechanism includes a motor installed on the outer wall of the gravel box, the output end of the motor is fixedly connected with a first crushing shaft, the outer surface of the first crushing shaft is fixedly connected with a first crushing wheel, and a first gear is fixedly connected to the first crushing shaft. Among them, a second crushing shaft is rotatably connected inside the gravel box, the outer surface of the second crushing shaft is fixedly connected with a second crushing wheel, and a second gear is fixedly connected to one end of the second crushing shaft, and the first gear and the second gear are meshed with each other.

[0013] In order to intermittently ventilate the crushed stones during the crushing process of the stones, improve the dust reduction efficiency, and promote the air circulation in the crushing mechanism to effectively cool the crushing mechanism, furthermore, the blowing mechanism includes air blowing holes opened on the side walls of the first crushing shaft and the second crushing shaft, a fixing rod is fixedly connected inside the air blowing holes, a connecting spring is fixedly connected to one side of the fixing rod, and a blocking magnetic ball is fixedly connected to the end of the connecting spring away from the fixing rod. The blocking magnetic ball is located at the exhaust end of the air blowing hole and is adapted to the air blowing hole.

[0014] Furthermore, the blocking magnetic ball is attracted to the crushing teeth of the first crushing wheel, and the blocking magnetic ball is attracted to the crushing teeth of the second crushing wheel.

[0015] In order to make the tipping plate move up and down, so that the dust in the stone can quickly separate from the stone. Further, the tipping mechanism includes a fixed rotating shaft fixedly connected inside the gravel box. The end of the fixed rotating shaft is rotatably connected to a tipping plate. A push rod is attached to the bottom of the tipping plate. Among them, a cam is fixedly connected to the first crushing shaft, and the outer surface of the cam is attached to the bottom of the push rod. The inner surface of the gravel box is fixedly connected with a fixed sliding bin, and the push rod passes through the fixed sliding bin and is slidably connected to the fixed sliding bin.

[0016] In order to extract the dust existing in the stone during the crushing process, further, the dust extraction mechanism includes a blower arranged outside the gravel box. The input end of the blower is fixedly connected with an air extraction pipe, and the output end of the blower is fixedly connected with an exhaust pipe. A first injection pipe is fixedly connected to the exhaust pipe, and a second injection pipe is fixedly connected to the exhaust pipe. The end of the air extraction pipe away from the blower is fixedly connected with a dust extraction pipe, and a dust filter screen is fixedly connected to the intake end of the dust extraction pipe. Among them, the dust extraction pipe is fixedly connected to the gravel box, the first injection pipe is communicated with the first crushing shaft, and the second injection pipe is communicated with the second crushing shaft.

[0017] In order to clean the dust filter screen and prevent the blockage of the dust filter screen from affecting the dust extraction efficiency, further, it also includes a connecting rod fixedly connected to the end of the tipping plate. A cleaning plate is fixedly connected to the connecting rod, a jet plate is fixedly connected to the end of the connecting rod away from the tipping plate, and a baffle is fixedly connected to the part of the connecting rod between the cleaning plate and the jet plate. Among them, the cleaning plate and the jet plate are respectively slidably connected to the intake side and the exhaust side of the dust filter screen. Spray holes are opened on the side of the jet plate close to the dust filter screen, and a connecting hose is fixedly connected to the side of the jet plate away from the dust filter screen.

[0018] Further, the baffle is slidably connected to the intake side of the dust filter screen. The connecting hose passes through the dust extraction pipe and is slidably connected to the dust extraction pipe. The connecting hose passes through the gravel box and is slidably connected to the gravel box. The connecting hose is fixedly connected to the exhaust pipe.

[0019] Further, a feeding port is opened at the top of the gravel box, a sealing plate is installed in the feeding port, a storage box is installed on the gravel box, a fixed platform is fixedly connected to the gravel box, a fixed bin is fixedly connected inside the gravel box, a dust collection box is slidably connected inside the fixed bin, the dust collection box is arranged at the bottom of the dust filter screen, the blower is installed on the top of the fixed platform, a gear box is fixedly connected inside the gravel box, the first gear and the second gear are both installed inside the gear box, and the gear box is rotationally connected to the first crushing shaft and the second crushing shaft.

[0020] Compared with the prior art, the present invention provides a dust-free gravel method for construction engineering detection, and has the following beneficial effects:

[0021] 1. The dust-free gravel crushing method for building engineering detection promotes the separation of stones and dust placed on the top of the material-tossing plate before crushing through the up-and-down jolting of the material-tossing plate on one hand, reduces the dust content of the stones entering the crushing mechanism, thereby reducing the amount of dust generated during the crushing of the stones. On the other hand, it realizes the cleaning of the dust filter screen, prevents a large amount of dust from adhering to the outer surface of the dust filter screen due to the air extraction effect, affects the air circulation, and thus reduces the dust content during the gravel crushing, ensuring the dust extraction efficiency.

[0022] 2. The dust-free gravel crushing method for building engineering detection rotates the first crushing wheel and the second crushing wheel. On one hand, it makes the air blowing holes intermittently blow air between the first crushing wheel and the second crushing wheel during the stone crushing process, enabling the dust generated by the crushed stones to float upward, so that the dust can quickly enter the dust extraction mechanism, reducing the dust content in the crushed stones and alleviating the burden of subsequent stone detection. On the other hand, it makes the air jet holes intermittently jet air from the exhaust end of the dust filter screen, acting on the holes of the dust filter screen to realize the backwashing effect on the dust filter screen, blowing the dust in the holes of the dust filter screen and on the surface of the intake side away from the dust filter screen, preventing the blockage of the dust filter screen from affecting the dust extraction efficiency, thereby improving the dust extraction efficiency, reducing the dust content in the gravel box, and thus reducing the impact of dust on the subsequent stone quality detection.

[0023] 3. The dust-free gravel crushing method for building engineering detection intermittently blows air through the air blowing holes, enabling the airflow generated by the dust extraction to stay in the first crushing shaft and the second crushing shaft, cooling the first crushing shaft, the second crushing shaft, the first crushing wheel and the second crushing wheel, preventing the first crushing shaft, the second crushing shaft, the first crushing wheel and the second crushing wheel from being worn due to overheating during long-term operation, thus ensuring the efficiency of stone crushing, extending the service life of the first crushing shaft, the second crushing shaft, the first crushing wheel and the second crushing wheel, and at the same time preventing the evaporation of moisture in the stones due to the overheating of the first crushing shaft, the second crushing shaft, the first crushing wheel and the second crushing wheel, affecting the detection accuracy of the stones. Description of the Drawings

[0024] Figure 1 It is a three-dimensional structure schematic diagram of the gravel crushing device for a dust-free gravel crushing method for building engineering detection proposed by the present invention;

[0025] Figure 2 It is a three-dimensional structure schematic diagram of a partially cut-open gravel crushing device for a dust-free gravel crushing method for building engineering detection proposed by the present invention;

[0026] Figure 3 It is a front cut-open structure schematic diagram of the gravel crushing device for a dust-free gravel crushing method for building engineering detection proposed by the present invention;

[0027] Figure 4 Schematic diagram of the enlarged structure at A in Figure 3 a dust-free gravel method for building engineering detection proposed by the present invention;

[0028] Figure 5 Schematic diagram of the enlarged structure at B in Figure 3 a dust-free gravel method for building engineering detection proposed by the present invention;

[0029] Figure 6 Schematic diagram of the top-sectioned structure of the gravel device in a dust-free gravel method for building engineering detection proposed by the present invention;

[0030] Figure 7 Schematic diagram of the middle-sectioned side structure of the gravel device in a dust-free gravel method for building engineering detection proposed by the present invention;

[0031] Figure 8 Schematic diagram of the three-dimensional structure of the dust extraction pipe of the gravel device in a dust-free gravel method for building engineering detection proposed by the present invention;

[0032] Figure 9 Schematic diagram of the three-dimensional structure of the crushing roller of the gravel device in a dust-free gravel method for building engineering detection proposed by the present invention;

[0033] Figure 10 Schematic diagram of the three-dimensional structure of the bottom of the material-tumbling plate of the gravel device in a dust-free gravel method for building engineering detection proposed by the present invention.

[0034] In the figure: 1. Gravel box; 2. Feeding port; 3. Sealing plate; 4. Storage box; 5. Fixed platform; 6. Ash collection box; 7. Motor; 8. First crushing shaft; 9. Gear box; 10. First crushing wheel; 11. First gear; 12. Second gear; 13. Second crushing shaft; 14. Second crushing wheel; 15. Air blowing hole; 16. Fixed rod; 17. Connecting spring; 18. Sealing magnetic ball; 19. Cam; 20. Push rod; 21. Fixed sliding bin; 22. Material-tumbling plate; 23. Fixed rotating shaft; 24. Connecting rod; 25. Cleaning plate; 26. Flap; 27. Air jet plate; 28. Air jet hole; 29. Dust extraction pipe; 30. Dust filter screen; 31. Fixed bin; 32. Exhaust pipe; 33. Fan; 34. Exhaust pipe; 35. First injection pipe; 36. Second injection pipe; 37. Connecting hose. Detailed implementation method

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0036] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. Embodiment

[0037] Refer to Figures 1 - 10 , a dust-free gravel method for construction engineering inspection, comprising the following steps:

[0038] Step 1: Select the stones for construction engineering to be inspected;

[0039] Step 2: Open the gravel device, place the stones to be inspected into the gravel device, and seal the gravel device;

[0040] Step 3: Start the gravel device to crush the stones to be inspected;

[0041] Step 4: After the crushing is completed, turn off the gravel device and take out the crushed stones from the gravel device.

[0042] Refer to Figures 1 - 10 , the gravel device includes a gravel box 1. A feeding port 2 is opened at the top of the gravel box 1. A sealing plate 3 is installed in the feeding port 2. A storage box 4 is installed on the gravel box 1. A fixed platform 5 is fixedly connected to the gravel box 1. A fixed bin 31 is fixedly connected inside the gravel box 1. An ash collection box 6 is slidably connected inside the fixed bin 31. A gear box 9 is fixedly connected to the gravel box 1. A crushing mechanism is installed inside the gravel box 1. The crushing mechanism is used to crush the stones, and a blowing mechanism is installed on the crushing mechanism. The blowing mechanism rotates with the rotation of the crushing mechanism and is driven by the crushing mechanism. A material-tumbling mechanism installed inside the gravel box 1 is used to tumble the stones before crushing, so that the dust in the stones is separated from the stones. A dust extraction mechanism installed on the gravel box 1 is connected to the crushing mechanism. The gas extracted by the dust extraction mechanism enters the crushing mechanism and is sprayed into the stones during the crushing process when the blowing mechanism is driven by the crushing mechanism.

[0043] When crushing stones, first open the sealing plate 3 installed on the feeding port 2, and then add the stones to be crushed and detected into the crushing box 1. The stones fall on the top of the material jolting mechanism. Then, cover the sealing plate 3 back into the feeding port 2 to seal the feeding port 2. At the same time, install the storage box 4 and the dust collection box 6 in the crushing box 1. At this time, the dust extraction mechanism can be started so that the dust extraction mechanism works first. Then, start the crushing mechanism so that the crushing mechanism drives the material jolting mechanism to jolt the stones, so that the dust in the stones is separated from the stones under the action of the dust extraction mechanism, and the dust pretreatment operation of the stones is carried out. Due to the jolting of the material jolting mechanism, the stones will intermittently fall into the crushing mechanism and be crushed by the crushing mechanism. During the working process of the crushing mechanism, the air blowing mechanism will intermittently blow air during the process of the crushing mechanism crushing the stones, quickly blowing away the dust generated by crushing the stones, so that the dust can float upward, enabling the dust extraction mechanism to quickly extract the dust generated during the process of crushing the stones;

[0044] After the stone crushing is completed, first turn off the crushing mechanism, then turn off the dust extraction mechanism, and finally the storage box 4 can be taken out, and the crushed stones can be collected and sent for inspection.

[0045] Refer to Figures 2 - 4 、 Figures 6 - 9 The crushing mechanism includes a motor 7 installed on the outer wall of the crushing box 1. The output end of the motor 7 is fixedly connected with a first crushing shaft 8. The outer surface of the first crushing shaft 8 is fixedly connected with a first crushing wheel 10. A first gear 11 is fixedly connected to the first crushing shaft 8. Among them, a second crushing shaft 13 is rotatably connected inside the crushing box 1. The outer surface of the second crushing shaft 13 is fixedly connected with a second crushing wheel 14. One end of the second crushing shaft 13 is fixedly connected with a second gear 12. The first gear 11 and the second gear 12 are meshed with each other. The first gear 11 and the second gear 12 are both installed in the gear box 9. The gear box 9 is rotatably connected with the first crushing shaft 8 and the second crushing shaft 13.

[0046] After the stones to be detected enter the crushing box 1 and the dust extraction mechanism is started, start the motor 7 so that the motor 7 drives the first crushing shaft 8 to rotate, and then drives the first crushing wheel 10 to rotate. The first crushing shaft 8 will also drive the second crushing shaft 13 to rotate through the first gear 11 and the second gear 12, so that the second crushing wheel 14 rotates in the opposite direction and at the same speed as the first crushing wheel 10, and the stones falling between the first crushing wheel 10 and the second crushing wheel 14 are crushed.

[0047] Refer to Figures 1 - 3 、 Figures 5 - 8, the dust extraction mechanism includes a fan 33 arranged outside the gravel box 1. The input end of the fan 33 is fixedly connected with an air extraction pipe 32, and the output end of the fan 33 is fixedly connected with an exhaust pipe 34. A first air injection pipe 35 is fixedly connected to the exhaust pipe 34, and a second air injection pipe 36 is fixedly connected to the exhaust pipe 34. The end of the air extraction pipe 32 far from the fan 33 is fixedly connected with a dust extraction pipe 29. The air inlet end of the dust extraction pipe 29 is fixedly connected with a dust filter net 30. Among them, the dust extraction pipe 29 is fixedly connected to the gravel box 1. The first air injection pipe 35 is communicated with the first crushing shaft 8, and the second air injection pipe 36 is communicated with the second crushing shaft 13. The ash collection box 6 is arranged at the bottom of the dust filter net 30, and the fan 33 is installed on the top of the fixed platform 5.

[0048] After the stones to be detected enter the gravel box 1, start the fan 33 so that the fan 33 extracts the air in the gravel box 1 through the air extraction pipe 32 and the dust extraction pipe 29, so that the dust contained in the stones flows towards the dust extraction pipe 29 along with the air. During the process of flowing with the air, the dust will be filtered by the dust filter net 30 at the air inlet end of the dust extraction pipe 29, and the air will enter the dust extraction pipe 29. Under the action of the fan 33, the air enters the exhaust pipe 34 and enters the first crushing shaft 8 and the second crushing shaft 13 respectively through the first air injection pipe 35 and the second air injection pipe 36 to cool the first crushing shaft 8 and the second crushing shaft 13;

[0049] Prevent the first crushing shaft 8 and the second crushing shaft 13, as well as the first crushing wheel 10 and the second crushing wheel 14, from overheating and wearing during long-term operation, thus ensuring the efficiency of stone crushing, extending the service life of the first crushing shaft 8 and the second crushing shaft 13, as well as the first crushing wheel 10 and the second crushing wheel 14. At the same time, prevent the temperature of the first crushing shaft 8 and the second crushing shaft 13, as well as the first crushing wheel 10 and the second crushing wheel 14, from being too high, resulting in the evaporation of moisture in the stones and affecting the detection accuracy of the stones.

[0050] Refer to Figure 2 、 Figure 3 、 Figure 5 、 Figure 7 、 Figure 8 、 Figure 10, the tipping mechanism includes a fixed rotating shaft 23 fixedly connected inside the gravel box 1. The end of the fixed rotating shaft 23 is rotatably connected with a tipping plate 22. A push rod 20 is attached to the bottom of the tipping plate 22. Among them, a cam 19 is fixedly connected to the first crushing shaft 8. The outer surface of the cam 19 is attached to the bottom of the push rod 20. The inner surface of the gravel box 1 is fixedly connected with a fixed sliding bin 21. The push rod 20 penetrates the fixed sliding bin 21 and is slidably connected with the fixed sliding bin 21. It also includes a connecting rod 24 fixedly connected to the end of the tipping plate 22. A cleaning plate 25 is fixedly connected to the connecting rod 24. One end of the connecting rod 24 away from the tipping plate 22 is fixedly connected with a jet plate 27. A baffle 26 is fixedly connected to the part of the connecting rod 24 between the cleaning plate 25 and the jet plate 27. Among them, the cleaning plate 25 and the jet plate 27 are respectively slidably connected to the intake side and the exhaust side of the dust filter net 30. The jet plate 27 is provided with jet holes 28 on the side close to the dust filter net 30. A connecting hose 37 is fixedly connected to the side of the jet plate 27 away from the dust filter net 30. The baffle 26 is slidably connected to the intake side of the dust filter net 30. The connecting hose 37 penetrates the dust extraction pipe 29 and is slidably connected with the dust extraction pipe 29. The connecting hose 37 penetrates the gravel box 1 and is slidably connected with the gravel box 1. The connecting hose 37 is fixedly connected to the exhaust pipe 34.

[0051] The stones to be tested added into the gravel box 1 will first fall on the top of the tipping plate 22. When the first crushing shaft 8 rotates, it will drive the cam 19 to rotate. The rotation of the cam 19 will push the push rod 20 to slide up and down along the inner surface of the fixed sliding bin 21, making the tipping plate 22 present a bumpy state along the fixed rotating shaft 23. During the process when the tipping plate 22 presents a bumpy state, the dust in the stones will be quickly separated from the stones. This is because the mass difference between the stones and the dust is relatively large, and the dust will be in a state of suspension at a certain fixed position, so that the stones and the dust are separated, enabling the dust extraction mechanism to better extract the dust contained in the stones before crushing from the stones, reducing the dust generated during the stone crushing process. And during the bumpy process of the tipping plate 22, it will drive the connecting rod 24 to swing up and down, prompting the cleaning plate 25 and the jet plate 27 to swing up and down, so that the cleaning plate 25 cleans the dust attached to the intake side of the dust filter net 30 (it should be noted that during the swinging process of the cleaning plate 25 and the connecting rod 24, due to the setting of the baffle 26, the dust will not enter the dust extraction pipe 29 through the part where the connecting rod 24 is slidably connected to the dust filter net 30, thus not affecting the fan 33). When the cleaning plate 25 slides up and down along the dust filter net 30, the dust attached to the surface of the intake side of the dust filter net 30 is scraped into the dust collection box 6. After the stones to be tested are crushed, the dust collection box 6 can be removed and the accumulated dust inside can be dumped.

[0052] On the one hand, it promotes the separation of the stone materials and dust placed on the top of the tipping plate 22 before crushing, reduces the dust content of the stone materials entering the crushing mechanism, thereby reducing the amount of dust generated during the crushing of the stone materials. On the other hand, it realizes the cleaning of the dust filter screen 30, prevents a large amount of dust from adhering to the outer surface of the dust filter screen 30 due to the air extraction effect, affects the air circulation, and thus reduces the dust content during the crushing of the stone materials, ensuring the dust extraction efficiency.

[0053] Referring to Figure 4 , Figure 6 , Figure 7 , Figure 9 , the air blowing mechanism includes air blowing holes 15 opened on the side walls of the first crushing shaft 8 and the second crushing shaft 13. A fixing rod 16 is fixedly connected inside the air blowing hole 15. One side of the fixing rod 16 is fixedly connected with a connecting spring 17. The end of the connecting spring 17 far from the fixing rod 16 is fixedly connected with a plugging magnetic ball 18. The plugging magnetic ball 18 is located at the exhaust end of the air blowing hole 15 and is adapted to the air blowing hole 15. The plugging magnetic ball 18 is attracted to the crushing teeth of the first crushing wheel 10 and the plugging magnetic ball 18 is attracted to the crushing teeth of the second crushing wheel 14.

[0054] During the rotation of the first crushing wheel 10 and the second crushing wheel 14, when the crushing teeth of the first crushing wheel 10 coincide with the crushing teeth of the second crushing wheel 14, at this time, the plugging magnetic ball 18 will slide outwards under the magnetic force of the crushing teeth, stretching the connecting spring 17, so that the air blowing hole 15 loses the plugging state of the plugging magnetic ball 18. The gas generated by the air extraction in the first crushing shaft 8 and the second crushing shaft 13 is blown through the air blowing hole 15 between the first crushing wheel 10 and the second crushing wheel 14, blowing the dust generated during the stone crushing process upwards, reducing the amount of dust slowly falling into the storage bin 4 due to the action of gravity. At the same time, it makes the dust generated during the stone crushing process easier to be extracted by the dust extraction mechanism. When the crushing teeth of the first crushing wheel 10 are separated from the crushing teeth of the second crushing wheel 14, at this time, the plugging magnetic ball 18 will re-plug the air blowing hole 15 under the action of the connecting spring 17. And at this time, since the dust extraction mechanism is still in the dust extraction state, the gas entering the exhaust pipe 34 will enter the jet plate 27 through the connecting hose 37 and be discharged through the jet holes 28. And because the jet plate 27 is in the up and down sliding state, the jet holes 28 will perform a full backwash on the dust filter screen 30, blowing the dust blocked in the holes of the dust filter screen 30 away from the dust filter screen 30 and entering the dust collection box 6 under the action of the cleaning plate 25;

[0055] On the one hand, the air blowing holes 15 intermittently blow air between the first crushing wheel 10 and the second crushing wheel 14 during the stone crushing process, enabling the dust generated by the crushed stone to float upward, so that the dust can quickly enter the dust extraction mechanism, reducing the dust content in the crushed stone and alleviating the burden of subsequent stone detection. On the other hand, the air jet holes 28 intermittently jet air from the exhaust end of the dust filter net 30, acting on the holes of the dust filter net 30 to realize the backwashing effect on the dust filter net 30, blowing the dust in the holes of the dust filter net 30 and on the surface of the intake side away from the dust filter net 30, preventing the blockage of the dust filter net 30 from affecting the dust extraction efficiency, thereby improving the dust extraction efficiency, reducing the dust content in the crushing box 1, and thus reducing the impact of dust on the subsequent stone quality detection.

[0056] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent replacements or changes, should be covered by the protection scope of the present invention.

Claims

1. A dust-free gravel method for building engineering inspection, characterized in that It includes the following steps: Step 1: Select the building engineering stone to be detected; Step 2: Open the crushing device, place the stone to be detected in the crushing device, and seal the crushing device; Step 3: Start the crushing device to crush the stone to be detected; Step 4: After the crushing is completed, turn off the crushing device and take out the crushed stone from the crushing device; The crushing device includes a crushing box (1); A crushing mechanism is installed in the crushing box (1). The crushing mechanism is used to crush the stone, and a blowing mechanism is installed on the crushing mechanism. The blowing mechanism rotates with the rotation of the crushing mechanism and is driven by the crushing mechanism; A material-turning mechanism installed in the crushing box (1), which is used to perform a material-turning operation on the stone before crushing, so that the dust in the stone is separated from the stone; A dust extraction mechanism installed on the crushing box (1). The dust extraction mechanism is connected to the crushing mechanism. The gas extracted by the dust extraction mechanism enters the crushing mechanism and is sprayed into the stone during the crushing process when the blowing mechanism is driven by the crushing mechanism; The crushing mechanism includes a motor (7) installed on the outer wall of the crushing box (1). The output end of the motor (7) is fixedly connected with a first crushing shaft (8). The outer surface of the first crushing shaft (8) is fixedly connected with a first crushing wheel (10). A first gear (11) is fixedly connected to the first crushing shaft (8); Among them, a second crushing shaft (13) is rotatably connected to the inside of the crushing box (1). The outer surface of the second crushing shaft (13) is fixedly connected with a second crushing wheel (14). One end of the second crushing shaft (13) is fixedly connected with a second gear (12). The first gear (11) and the second gear (12) are meshed with each other; The material-turning mechanism includes a fixed rotating shaft (23) fixedly connected to the inside of the crushing box (1). The end of the fixed rotating shaft (23) is rotatably connected with a material-turning plate (22). A push rod (20) is attached to the bottom of the material-turning plate (22); Among them, a cam (19) is fixedly connected to the first crushing shaft (8). The outer surface of the cam (19) is attached to the bottom of the push rod (20). A fixed sliding bin (21) is fixedly connected to the inner surface of the crushing box (1). The push rod (20) passes through the fixed sliding bin (21) and is slidably connected to the fixed sliding bin (21); The dust extraction mechanism includes a fan (33) arranged outside the crushing box (1). The input end of the fan (33) is fixedly connected with an air extraction pipe (32). The output end of the fan (33) is fixedly connected with an exhaust pipe (34). A first air injection pipe (35) is fixedly connected to the exhaust pipe (34). A second air injection pipe (36) is fixedly connected to the exhaust pipe (34). The end of the air extraction pipe (32) away from the fan (33) is fixedly connected with a dust extraction pipe (29). The intake end of the dust extraction pipe (29) is fixedly connected with a dust filter net (30); Among them, the dust extraction pipe (29) is fixedly connected to the gravel box (1), the first air injection pipe (35) is communicated with the first crushing shaft (8), and the second air injection pipe (36) is communicated with the second crushing shaft (13); It further includes a connecting rod (24) fixedly connected to the end of the material tipping plate (22). A cleaning plate (25) is fixedly connected to the connecting rod (24). One end of the connecting rod (24) away from the material tipping plate (22) is fixedly connected to an air jet plate (27). A baffle (26) is fixedly connected to the part of the connecting rod (24) between the cleaning plate (25) and the air jet plate (27). Among them, the cleaning plate (25) and the air jet plate (27) are respectively slidably connected to the air inlet side and the air outlet side of the dust filter net (30). The side of the air jet plate (27) close to the dust filter net (30) is provided with air jet holes (28). A connecting hose (37) is fixedly connected to the side of the air jet plate (27) away from the dust filter net (30). The air blowing mechanism includes air blowing holes (15) opened on the side walls of the first crushing shaft (8) and the second crushing shaft (13). A fixing rod (16) is fixedly connected in the air blowing holes (15). A connecting spring (17) is fixedly connected to one side of the fixing rod (16). One end of the connecting spring (17) away from the fixing rod (16) is fixedly connected to a plugging magnetic ball (18). The plugging magnetic ball (18) is located at the exhaust end of the air blowing holes (15) and is adapted to the air blowing holes (15). The plugging magnetic ball (18) is attracted to the crushing teeth of the first crushing wheel (10), and the plugging magnetic ball (18) is attracted to the crushing teeth of the second crushing wheel (14).

2. The dust-free gravel method for building engineering inspection according to claim 1, characterized in that, The baffle (26) is slidably connected to the air inlet side of the dust filter net (30). The connecting hose (37) penetrates through the dust extraction pipe (29) and is slidably connected to the dust extraction pipe (29). The connecting hose (37) penetrates through the gravel box (1) and is slidably connected to the gravel box (1). The connecting hose (37) is fixedly connected to the exhaust pipe (34).

3. The dust-free gravel method for building engineering detection according to claim 1, characterized in that, A feeding port (2) is opened at the top of the gravel box (1). A sealing plate (3) is installed in the feeding port (2). A storage box (4) is installed on the gravel box (1). A fixed platform (5) is fixedly connected to the gravel box (1). A fixed bin (31) is fixedly connected inside the gravel box (1). An ash collection box (6) is slidably connected inside the fixed bin (31). The ash collection box (6) is arranged at the bottom of the dust filter net (30). A blower (33) is installed on the top of the fixed platform (5). A gear box (9) is fixedly connected inside the gravel box (1). The first gear (11) and the second gear (12) are both installed inside the gear box (9). The gear box (9) is rotationally connected to the first crushing shaft (8) and the second crushing shaft (13).

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