Dry cutting dust collection type concrete cutting machine

Abstract

The invention relates to the technical field of cutting machines, in particular to a dry cutting dust collection type concrete cutting machine which comprises a machine frame and a pulley block rotationally installed on one side of the machine frame and further comprises a positioning roller movably installed at the bottom of the machine frame. The sealing cover is fixedly mounted on one side of the rack, and a notch is formed in the sealing cover; the air pipe is detachably mounted at the top of the sealing cover, one end of the air pipe is communicated with the notch, and the other end is connected with external dust collection equipment; the cutter is rotationally mounted in the notch, and one part of the cutter extends out of the sealing cover; the wind scooper is fixedly mounted in the notch, is communicated with one side of the air pipe and is in a gradually-shrunk horn shape; and the flow guide assemblies are arranged at the two ends of the exterior of the wind scooper and used for preventing dust from being accumulated on the exterior of the wind scooper, and the concrete cutting machine can actively cut and disturb the vortex area and break the stagnation state of airflow through rotation of the rotating pieces, so that detained dust-containing gas is re-fused into a main adsorption flow field, and discharging of the detained dust-containing gas is accelerated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cutting machines, in particular to a dry cutting dust collection type concrete cutting machine. BACKGROUND

[0002] In the fields of building, stone processing, metal cutting, etc., cutting machines are widely used core processing equipment. A large amount of dust gas is generated during the cutting process. These dusts not only pollute the working environment and harm the health of the operators, but also affect the construction quality of subsequent masonry, plastering and other processes in the concrete construction industry. Therefore, it is crucial to equip the cutting machine with an efficient dust collection device.

[0003] In the prior art, the dust treatment scheme of the concrete cutting machine generally adopts the structure form of "sealed shield + straight hole dust collection". Specifically, a sealed shield is provided outside the saw blade of the cutting machine to block the outward diffusion of concrete dust. Meanwhile, a circular straight hole is formed on the wall surface (usually the top) of the sealed shield as an air hole, which is connected with the external dust collection device through a flexible air pipe. When working, the external dust collection device generates negative pressure after starting, and the dust-containing gas inside the sealed shield is sucked into the dust collection device through the straight hole, air pipe and dust collection device under the action of negative pressure, thereby realizing the adsorption treatment of dust.

[0004] Although the above-mentioned prior art scheme can block and adsorb concrete dust to some extent, its structure design is relatively extensive, and it has poor adaptability to the characteristics of uneven particle size, easy caking and fast diffusion speed of concrete dust. In actual concrete cutting operation, there are many deficiencies and disadvantages, resulting in low dust adsorption efficiency. For example, the air hole in the prior art is a straight hole without guiding structure, and the negative pressure generated by the external dust collection device can only form a local adsorption field at the entrance of the straight hole, which cannot effectively guide the chaotic diffusion of concrete dust inside the sealed shield. In addition, due to the limited adsorption range of the straight hole dust collection, the two side areas of the air hole corresponding to the inner wall of the sealed shield and the gap between the shield and the saw blade are prone to form air flow vortex and stagnation zone, affecting the adsorption efficiency of dust. SUMMARY

[0005] Therefore, it is necessary to provide a dry cutting dust collection type concrete cutting machine which can improve the dust adsorption efficiency.

[0006] The dry cutting dust collection type concrete cutting machine provided by the present application comprises a rack and a pulley set rotatably installed on one side of the rack, and further comprises: a positioning roller movably installed at the bottom of the rack; a sealing cover fixedly installed on one side of the rack, and a slot is formed in the inside of the sealing cover; A duct is detachably mounted on the top of the sealing cover, one end of which is in communication with the slot, and the other end is connected with an external dust collection device. A cutter is rotatably mounted in the slot, and a part of the cutter extends outside the sealing cover. A guide cover is fixedly mounted inside the slot and in communication with one side of the duct, and is shaped like a tapered horn. A guide assembly is arranged at both ends of the guide cover to prevent dust from accumulating outside the guide cover.

[0007] In one embodiment, the guide assembly includes a rotating shaft, which is movably arranged through one side of the guide cover, and a rotating cylinder is fixedly arranged at the outer end of the rotating shaft, and a plurality of rotating pieces are fixedly arranged in an annular array on the outer side of the rotating cylinder.

[0008] In one embodiment, a horizontal groove is formed at one end of the rotating piece close to the outer wall of the guide cover, and a plurality of rotating balls are movably arranged in the horizontal groove, and a rotating rod is fixedly arranged through the middle of the rotating ball close to the outermost side of the horizontal groove, and the other end of the rotating rod is rotatably connected with the inner wall of the horizontal groove.

[0009] In one embodiment, an L-shaped groove is formed at one side of the rotating piece, and a movable groove is formed above the L-shaped groove, and a pressing plate is movably arranged in the movable groove, and a plurality of sharp teeth are arranged on the surface of the pressing plate close to one end of the L-shaped groove.

[0010] In one embodiment, a plurality of leakage holes are formed at the lower surface of the L-shaped groove, and the leakage holes penetrate the side wall of the rotating piece away from the pressing plate.

[0011] In one embodiment, a movable plate is movably arranged in the movable groove, a limiting rod is fixedly arranged at one end of the movable plate close to the pressing plate, an arc-shaped groove is formed at one end of the pressing plate close to the movable plate, and the other end of the limiting rod is slidably connected with the arc-shaped groove.

[0012] In one embodiment, a round rod is rotatably arranged in the movable groove, a curved groove is formed on the outer side of the round rod, a positioning rod is fixedly arranged at one end of the movable plate close to the round rod, and the other end of the positioning rod is slidably attached to the curved groove.

[0013] In one embodiment, a horizontal rod is movably arranged at one side of the round rod, one end of the horizontal rod is arranged inside the horizontal groove, and the horizontal rod and the round rod are connected by a belt transmission.

[0014] In one embodiment, one end of the horizontal rod inside the horizontal groove is connected with the rotating rod by a bevel gear transmission.

[0015] In one of the embodiments, the rotating piece is provided with a containing groove below the L-shaped groove, and a plurality of steel balls are movably installed in the containing groove and movably abut against the inner wall of the containing groove.

[0016] In one of the embodiments, the rotating shaft is fixedly connected with a plurality of fan blades on one side inside the air guide cover.

[0017] In one of the embodiments, the sealing cover is fixedly installed with a baffle on the bottom on both sides.

[0018] The dry cutting dust collection type concrete cutting machine can actively cut and disturb the vortex area by the rotation of the rotating piece, break the stagnation state of the airflow, make the retained dust-containing gas re-mix into the main adsorption flow field, and accelerate the discharge thereof. The sharp teeth at the bottom of the pressing plate can extrude, puncture and grind the large particles / caked dust below, break the large particles / caked dust into fine particles with smaller particle size, and the fine particle dust is light in weight and easy to suspend, so that the fine particle dust can be quickly adsorbed by the negative pressure of the air guide cover and discharged with the dust-containing gas, thereby solving the problem that the large particle dust cannot be adsorbed and is easy to accumulate. When the rotating piece rotates, the steel balls in the containing groove are jointly acted by the centrifugal force, the gravity and the collision force of the groove wall, and roll, bounce and collide irregularly in the groove. The vibration force generated by the collision is transmitted to the entire rotating piece, so that the rotating piece generates high-frequency and small-amplitude shaking, which can quickly shake off the fine powder adhered to the surface of the rotating piece, so that the fine powder is re-suspended and then sucked away by the negative pressure of the air guide cover. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the structure of the positioning roller in the present application; Figure 3 It is a schematic diagram of the internal structure of the sealing cover in the present application; Figure 4 It is a schematic diagram of the structure of the air guide cover in the present application; Figure 5 It is a schematic diagram of the structure of the rotating cylinder in the present application; Figure 6 It is a schematic diagram of the structure of the rotating ball in the present application; Figure 7 It is Figure 6 It is an enlarged schematic diagram of part A in the present application; Figure 8 Fig. 1 is a schematic view of the structure of the pressing plate in the present application; Figure 9 Fig. 2 is a schematic view of the structure of the limiting rod in the present application; Figure 10 Fig. 3 is a schematic view of the structure of the pressing plate in the present application; Figure 9 Fig. 4 is an enlarged schematic view of part B in Fig. 3.

[0021] Reference signs: 1, frame; 2, pulley block; 3, positioning roller; 4, air pipe; 5, cutter; 6, sealing cover; 61, notch; 7, air guide cover; 8, flow guide assembly; 81, rotating shaft; 82, rotating cylinder; 9, rotating piece; 91, horizontal groove; 92, L-shaped groove; 93, movable groove; 94, leakage hole; 95, containing groove; 10, rotating ball; 11, rotating rod; 12, pressing plate; 121, arc-shaped groove; 13, tine; 14, movable plate; 15, limiting rod; 16, round rod; 161, curved groove; 17, positioning rod; 18, crossbar; 19, belt; 20, bevel gear; 21, steel ball; 22, fan blade; 23, baffle. DETAILED DESCRIPTION

[0022] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely explain the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall into the scope of protection of the present application.

[0023] It should be noted that when a component is referred to as being “fixed to” or “disposed on” another component, it can be directly on the other component or there can be intervening components. When a component is referred to as being “connected to” another component, it can be directly connected to the other component or there can be intervening components. The terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in the description of the present application are for the purpose of illustration only and do not indicate the only orientation of the embodiments.

[0024] In addition, the terms “first” and “second” are used only for descriptive purposes and should not be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined as “first” and “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “a plurality of” is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0025] In the present application, unless otherwise explicitly specified and limited, the first feature is "on", "under" the second feature, which can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only means that the first feature is horizontally higher than the second feature. The first feature is "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only means that the first feature is horizontally lower than the second feature.

[0026] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0027] The present application will be described below in conjunction with Figures 1-10 The dry cutting dust collection type concrete cutting machine of the present application is described.

[0028] As Figures 1-5 shown, in one embodiment, the dry cutting dust collection type concrete cutting machine comprises a frame 1 and a pulley set 2 rotatably mounted on one side of the frame 1, and further comprises: A positioning roller 3 movably mounted at the bottom of the frame 1; A sealing cover 6 fixedly mounted on one side of the frame 1, and a notch 61 is formed in the inside of the sealing cover 6; A wind pipe 4 detachably mounted on the top of the sealing cover 6, one end of which is in communication with the notch 61, and the other end is connected with an external dust collection equipment; A cutter 5 rotatably mounted in the notch 61, a part of which extends outside the sealing cover 6; A wind deflector 7 fixedly mounted inside the notch 61, which is in communication with one side of the wind pipe 4, and is shaped as a tapered horn; A flow guide assembly 8 provided at both ends of the wind deflector 7, which is used to avoid dust accumulation outside the wind deflector 7.

[0029] Specifically, pulley block 2 allows operators to push frame 1 to a preset position for cutting. Frame 1 can drive components such as sealing cover 6 and cutter 5 to rotate relative to pulley block 2, adapting to concrete blocks of different thicknesses. When pulley block 2 rotates, positioning roller 3 slides laterally along the ground to adjust its position, ensuring the overall stability of frame 1. During cutting, cutter 5 rotates to cut the concrete block. Sealing cover 6 wraps around cutter 5 to prevent dust and gas generated during cutting from spreading outwards and being inhaled, affecting health. Simultaneously, external dust collection equipment is activated during the cutting process. The airflow generated by the dust collection equipment extracts the dust and gas inside sealing cover 6 through duct 4 and air guide hood 7. Air guide hood 7 is designed with a tapered, flared structure, which... As the airflow passes through, its velocity increases. According to Bernoulli's principle, the faster the velocity, the lower the local pressure, thus creating a stronger negative pressure zone at the inlet of the through hole. This stronger negative pressure can more effectively draw dust-laden gas from inside the sealing cover 6, improving adsorption efficiency. Secondly, the tapering slope can act like a funnel, guiding and converging the scattered dust-laden airflow in the slot 61 of the sealing cover 6 to the inlet of the duct 4, reducing eddies and dead zones in the airflow at the top of the sealing cover 6, allowing more dust to directly enter the pipe and preventing dust deposition. However, some dust-laden gas will still gather outside the air guide cover 7. The airflow in this area can be fluctuated by the flow guiding component 8, causing this part of the dust-laden gas to move to the opening of the air guide cover 7, accelerating its adsorption speed and preventing dust from accumulating on the outside of the air guide cover 7.

[0030] See Figures 4-6 As shown, in this embodiment, the flow guiding component 8 includes a rotating shaft 81, which movably passes through one side of the air guide shroud 7, and a rotating cylinder 82 is fixedly sleeved on the outer side of its end. Multiple rotating plates 9 are fixedly installed in a ring array on the outer side of the rotating cylinder 82.

[0031] Specifically, the rotation of the rotating shaft 81 drives the rotating cylinder 82 to rotate synchronously, and the rotating plate 9 to rotate. The rotating shaft 81 is driven by a micro motor. Although the tapered air guide 7 can accelerate the main airflow to converge towards the air hole, the leeward area outside the air guide 7 is easily blocked by the airflow adsorbed by negative pressure, which easily forms an airflow stagnation vortex area. After the dust-laden gas enters this area, it cannot be discharged with the main airflow and will stagnate and remain locally. The rotation of the rotating plate 9 can actively cut and disturb this vortex area, break the stagnation of the airflow, and allow the stagnant dust-laden gas to re-integrate into the main adsorption flow field and flow along the outside of the air guide 7 towards the air hole. This clears the discharge path of the dust-laden gas at the flow field level and reduces the "flow field resistance" of the main airflow discharge.

[0032] See Figure 6 and Figure 7As shown, in this embodiment, a horizontal groove 91 is provided at one end of the rotating plate 9 near the outer wall of the wind guide shroud 7. A plurality of rotating balls 10 are movably installed in the horizontal groove 91. A rotating rod 11 is fixedly provided through the middle of the rotating ball 10 near the outermost side of the horizontal groove 91. The other end of the rotating rod 11 is rotatably connected to the inner wall of the horizontal groove 91.

[0033] Specifically, during concrete cutting operations, fine concrete powder and sand particles easily adhere to the outer wall of the air guide shroud 7. If the rotating plate 9 directly slides in hard contact with the outer wall, rigid sliding friction will be formed due to dust contamination. This not only results in high rotational resistance, but also easily leads to jamming of the rotating plate 9 and increased power loss. Furthermore, it will rapidly wear down the contact end of the rotating plate 9 and the outer wall of the air guide shroud 7, reducing the service life of the components. After the rotating ball 10 is embedded in the transverse groove 91 and abuts against the outer wall, the sliding friction between the rotating plate 9 and the outer wall is converted into rolling friction of the rotating ball 10. The coefficient of friction is greatly reduced. Even if dust adheres to the outer wall, it can be dispersed and carried away by the rolling of the rotating ball 10. This facilitates the adsorption of dust and avoids jamming caused by a sudden increase in frictional resistance. At the same time, it completely reduces the scraping and wear on the outer wall of the air guide shroud 7, ensuring the integrity of the external structure of the air guide shroud 7 and not affecting its airflow guiding effect.

[0034] See Figure 8 As shown, in this embodiment, an L-shaped groove 92 is provided on one side of the rotating plate 9, and a movable groove 93 is provided above the L-shaped groove 92 on the rotating plate 9. A pressure plate 12 is movably arranged in the movable groove 93, and a plurality of sharp teeth 13 are provided on the surface of the pressure plate 12 facing the L-shaped groove 92.

[0035] Specifically, the dust generated from concrete cutting contains a large amount of coarse particles and agglomerated dust. This type of dust is heavy and has poor flowability, making it difficult to be adsorbed by the negative pressure of the air guide hood 7 alone. It tends to accumulate in the leeward side of the air guide hood 7. When the rotating plate 9 rotates, the large dust particles on the outer wall of the air guide hood 7 will enter the L-shaped groove due to the scraping and driving action of the rotating plate 9. Secondly, the dust particles in the airflow will also enter the interior of the L-shaped groove 92. The large dust particles that enter the L-shaped groove slide to the bottom of the pressure plate 12. The pressure plate 12 moves up and down in the movable groove 93. The sharp teeth 13 at the bottom of the pressure plate 12 will squeeze, puncture, and grind the large dust particles / agglomerated dust below, breaking them into finer particles with smaller particle sizes. The fine dust particles are light and easy to suspend, and can be quickly adsorbed by the negative pressure of the air guide hood 7 and smoothly discharged with the dust-laden gas, solving the problem of large dust particles being "unable to be adsorbed and able to accumulate".

[0036] See Figure 5 and Figure 8 As shown, in this embodiment, the rotating plate 9 has multiple holes 94 on the lower surface of the L-shaped groove 92, and the holes 94 penetrate the side wall of the rotating plate 9 away from the pressure plate 12.

[0037] Specifically, large dust particles are broken into smaller fine particles by the sharp teeth 13 and discharged through the holes 94. Because the rotating plate 9 is always rotating, it generates centrifugal force, which throws the dust out, making it easier for the dust collection equipment to adsorb it.

[0038] See Figure 9 and Figure 10 As shown, in this embodiment, a movable plate 14 is movably disposed in the movable groove 93. A limit rod 15 is fixedly disposed on one end of the movable plate 14 near the pressure plate 12. An arc-shaped groove 121 is opened on one end of the pressure plate 12 near the movable plate 14. The end of the limit rod 15 away from the movable plate 14 is slidably connected to the arc-shaped groove 121.

[0039] Specifically, during the rotation of the rotating plate 9, the movable plate 14 moves laterally back and forth. The back and forth movement of the movable plate 14 will drive the limit rod 15 to move laterally back and forth. During the movement of the limit rod 15, it slides along the arc groove 121 opened in the pressure plate 12, which will cause the pressure plate 12 to move up and down back and forth. The sharp teeth 13 can crush large dust particles.

[0040] See Figure 9 and Figure 10 As shown, in this embodiment, a round rod 16 is rotatably installed in the movable groove 93, and a curved groove 161 is provided on the outer side of the round rod 16. A positioning rod 17 is fixedly provided on the movable plate 14 near one end of the round rod 16, and the end of the positioning rod 17 away from the movable plate 14 is slidably attached to the curved groove 161.

[0041] Specifically, the rotation of the round rod 16 will drive the curved groove 161 to rotate, the rotation of the curved groove 161 will drive the positioning rod 17 to move laterally back and forth, and the lateral back and forth movement of the positioning rod 17 will drive the movable plate 14 to move. Through the cooperation of the limiting rod 15 and the arc groove 121, the pressure plate 12 can move up and down back and forth, which is convenient for crushing large particles of dust.

[0042] See Figures 8-10 As shown, in this embodiment, a crossbar 18 is movably installed through one side of the round rod 16 on the rotating plate 9. One end of the crossbar 18 is located inside the transverse groove 91, and the crossbar 18 and the round rod 16 are connected by a belt 19.

[0043] Specifically, the rotation of the crossbar 18 drives the round bar 16 to rotate synchronously through the transmission of the belt 19. The rotation of the round bar 16 can ultimately realize the up and down movement of the pressure plate 12, thereby crushing large dust particles.

[0044] See Figure 7 As shown, in this embodiment, the end of the crossbar 18 located in the cross groove 91 is connected to the rotating rod 11 by a bevel gear 20.

[0045] Specifically, during the rotation of the rotating plate 9, one of the rotating balls 10 will rotate on its own axis. The rotation of the rotating ball 10 will drive the rotating rod 11 to rotate. The rotating rod 11 drives the crossbar 18 to rotate synchronously through the transmission of the bevel gear 20, thereby ultimately realizing the up-and-down reciprocating movement of the pressure plate 12. In this step, the transmission of the bevel gear 20 enables the pressure plate 12 to simultaneously crush large dust particles during the rotation of the rotating plate 9, resulting in higher dust adsorption efficiency.

[0046] See Figure 8 As shown, in this embodiment, the rotating plate 9 is provided with a receiving groove 95 below the L-shaped groove 92. A plurality of steel balls 21 are movably installed in the receiving groove 95, and the steel balls 21 movably abut against the inner wall of the receiving groove 95.

[0047] Specifically, concrete powder is highly adhesive. Even if the rotating plate 9 completes the cleaning and crushing through the rotating ball 10 and the sharp teeth 13, a large amount of fine powder will still stick to the surface of the rotating plate 9. Long-term accumulation will lead to a decrease in the fit of the rotating plate 9 and structural jamming. When the rotating plate 9 rotates, the steel ball 21 in the receiving groove 95 is subjected to the combined action of centrifugal force, gravity, and groove wall collision force, and rolls, bounces and collides irregularly in the groove. The vibration force generated by the collision is transmitted to the entire rotating plate 9, causing the rotating plate 9 to produce high-frequency micro-vibration: on the one hand, it can quickly shake off the fine powder sticking to the surface of the plate, allowing the dust to be resuspended and sucked away by the negative pressure of the air guide 7; on the other hand, it can shake off the dust embedded in the gaps of the sharp teeth 13 and the horizontal groove 91, avoiding the gaps from being blocked by dust accumulation and affecting the normal movement of the rotating ball 10 and the pressure plate 12, ensuring that the functions of each structure do not fail.

[0048] See Figure 4 As shown, in this embodiment, the rotating shaft 81 is located inside the air guide shroud 7 and is fixedly connected to multiple fan blades 22.

[0049] Specifically, although the tapered structure of the air guide hood 7 can initially accelerate the suction airflow, relying solely on the passive negative pressure of the external suction device can easily lead to uneven airflow velocity and negative pressure attenuation inside the air guide hood 7 (especially in the edge area far from the air duct 4 interface), where fine dust particles are easily trapped. However, the fan blades 22, which rotate together with the rotating shaft 81, can actively enhance the airflow dynamics inside the air guide hood 7, improving the adsorption efficiency from the source. In addition, the rotation of the fan blades 22 will force the airflow inside the air guide hood 7 to flow rapidly towards the air duct 4 interface, further increasing the airflow velocity and allowing the dust-laden gas to be discharged more quickly, preventing dust from being trapped and accumulated inside the air guide hood 7.

[0050] See Figure 1 As shown, in this embodiment, baffles 23 are fixedly installed on both sides of the bottom of the sealing cover 6.

[0051] Specifically, the baffle 23 can further prevent dust-laden gas generated during the cutting process from overflowing from the sealing cover 6 and causing unnecessary harm to the human body.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A dry-cutting, dust-collecting concrete cutter, comprising a frame and a pulley system rotatably mounted on one side of the frame, characterized in that, Also includes: The positioning roller is movably mounted on the bottom of the frame; A sealing cover is fixedly installed on one side of the frame, and a slot is provided inside it; The duct is detachably installed on the top of the sealing cover, with one end connected to the slot and the other end connected to an external vacuuming device; The cutter is rotatably mounted inside the slot, with a portion extending outside the sealing cover; An air guide shroud is fixedly installed inside the slot and is connected to one side of the air duct. Its shape is a tapered horn. The airflow guiding components are located at both ends of the outside of the air guide cover to prevent dust from accumulating on the outside of the air guide cover.

2. The dry-cutting, dust-collecting concrete cutter according to claim 1, characterized in that, The airflow guiding assembly includes a rotating shaft that movably passes through one side of the air guide shroud, and a rotating cylinder is fixedly sleeved on the outer side of its end. Multiple rotating blades are fixedly installed in a ring array on the outer side of the rotating cylinder.

3. The dry-cutting, dust-collecting concrete cutter according to claim 2, characterized in that, The rotating plate has a horizontal groove at one end near the outer wall of the air guide shroud. Multiple rotating balls are movably installed in the horizontal groove. A rotating rod is fixedly installed through the middle of the rotating ball near the outermost side of the horizontal groove. The other end of the rotating rod is rotatably connected to the inner wall of the horizontal groove.

4. The dry-cutting, dust-collecting concrete cutter according to claim 3, characterized in that, An L-shaped groove is provided on one side of the rotating plate, and a movable groove is provided above the L-shaped groove on the rotating plate. A pressure plate is movably disposed in the movable groove, and multiple sharp teeth are provided on the surface of the pressure plate facing the L-shaped groove.

5. The dry-cutting, dust-collecting concrete cutter according to claim 4, characterized in that, The rotating plate has multiple drainage holes on the lower surface of the L-shaped groove, and the drainage holes penetrate the side wall of the rotating plate away from the pressure plate.

6. The dry-cutting, dust-collecting concrete cutter according to claim 4, characterized in that, A movable plate is movably disposed within the movable groove. A limit rod is fixedly disposed on one end of the movable plate near the pressure plate. An arc-shaped groove is formed on one end of the pressure plate near the movable plate. The end of the limit rod away from the movable plate is slidably connected to the arc-shaped groove.

7. The dry-cutting, dust-collecting concrete cutter according to claim 6, characterized in that, A round rod is rotatably installed inside the movable groove. A curved groove is opened on the outer side of the round rod. A positioning rod is fixedly installed on the movable plate at one end near the round rod. The end of the positioning rod away from the movable plate slides and fits into the curved groove.

8. The dry-cutting, dust-collecting concrete cutter according to claim 7, characterized in that, The rotating plate is movably mounted with a crossbar on one side of the round rod. One end of the crossbar is located inside the horizontal groove, and the crossbar and the round rod are connected by a belt drive.

9. The dry-cutting, dust-collecting concrete cutter according to claim 8, characterized in that, The crossbar is located at one end within the horizontal groove and is connected to the rotating rod via a bevel gear transmission.

10. The dry-cutting, dust-collecting concrete cutter according to claim 4, characterized in that, The rotating plate has a receiving groove below the L-shaped groove, and multiple steel balls are movably installed in the receiving groove, with the steel balls movably abutting against the inner wall of the receiving groove.

11. The dry-cutting, dust-collecting concrete cutter according to claim 2, characterized in that, The rotating shaft is located inside the air guide cover and is fixedly connected to multiple fan blades on one side.

12. The dry-cutting, dust-collecting concrete cutter according to claim 1, characterized in that, Baffles are fixedly installed on both sides of the bottom of the sealing cover.

Images