Gravel crushing and dust removing equipment for building construction

Abstract

The invention discloses gravel crushing and dust removing equipment for building construction, and relates to the technical field of gravel crushing, dust removing and filtering, and the gravel crushing and dust removing equipment for building construction comprises a crushing assembly for crushing gravel for building construction and a filter for removing dust of gas in the crushing process. In the operation process of the gravel crushing and dust removing equipment for building construction, through mutual cooperation of the dust removing assembly, the supporting assembly, the lifting assembly, the cleaning assembly and the processing assembly, dust particles dispersed in gas can be filtered and separated, and a compact filter cake formed by attachment to the outer side of a filter belt can be scraped and cleaned; according to the device, continuous dust filtering and separating treatment of the filter in the broken stone crushing process is facilitated, and in the cleaning process, dust clusters transversely migrated into the filter belt under the thrust action of the annular scraper blade in the scraping and cleaning process are separated from inside to outside through transmission, so that the cleaning effect on the filter belt is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gravel crushing dust removal and filtration equipment, and specifically relates to a gravel crushing dust removal device for construction. Background Technique

[0002] During the construction process, a crushing device is used to crush gravel. To reduce the impact of the dust gas generated during the crushing process on the air environment, a filter is provided on the crushing device. The filter separates the dispersed dust particles in the gas through filtration, for environmental protection during the processing.

[0003] During the actual process of the crushing device crushing gravel, in order to improve the dust reduction effect, a water spray dust removal method is adopted on the device to reduce the dust. However, during the operation of this dust reduction method, although it can effectively reduce the dust concentration, it will also significantly increase the dust humidity. The high humidity significantly enhances the van der Waals force and liquid bridge force between dust particles (about 3-5 times that of dry dust), resulting in dust particles with a particle size of 5-50μm being prone to form viscous lumps of 1-5mm. And when the filter is used to filter and separate the dust, the viscous dust lumps will adhere to the surface of the filter belt to form a dense filter cake. The air permeability drops suddenly from 200m³ / (m²·h) to 50m³ / (m²·h), and the resistance loss increases by 200% (from 500Pa to 1500Pa), resulting in low efficiency in actually filtering and separating dust particles. And due to the viscosity of the high-humidity dust, the inertial force (50-100N) of traditional mechanical vibration (such as a cam vibrator) cannot overcome the adhesion force of the viscous dust to the filter bag (up to 80-150N / ㎡ under high humidity), which increases the residual ash rate on the filter, affecting the continuous dust filtration and separation treatment of the filter during the gravel crushing process. For this reason, we propose a gravel crushing dust removal device for construction. Summary of the Invention

[0004] The purpose of the present invention is to provide a gravel crushing dust removal device for construction to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A gravel crushing dust removal device for construction, including a crushing component for crushing the gravel used in construction and a filter for dust removal during the crushing process. The crushing component includes a frame and a feeding box arranged above the frame. Feeding ports are opened on both sides of the feeding box. A crushing component for crushing the gravel after entering is arranged inside the frame. The filter includes a cylinder body. An installation hole is opened at the upper end of the feeding box. The cylinder body is detachably installed inside the installation hole by means of threads. An air inlet hole for air intake is opened on the cylinder body. A blower for air extraction is installed at the upper end of the cylinder body. It also includes: A dust removal component, which is arranged inside the cylinder body and is used for filtering the dust existing in the gas during the circulation and transportation process; A support component, which is arranged between the cylinder body and the dust removal component and is used for internally supporting the dust removal component; A lifting component, which is arranged between the cylinder body and the dust removal component and is used for assisting in lifting the dust removal component; And a cleaning component, which is arranged inside the cylinder body and is used for cleaning the dense filter cake formed after adsorbing the viscous dust mass on the surface of the dust removal component during the lifting process. A treatment component for treating the blockage of the mesh holes on the dust removal component during the cleaning process is arranged on the cleaning component.

[0006] Preferably, the dust removal component includes an annular plate arranged inside the cylinder body. A filter belt for filtering dust in the gas is fixed at the lower end of the annular plate. Mesh holes are arranged on the filter belt.

[0007] Preferably, the lifting component includes an installation ring arranged inside the annular plate. A plurality of groups of sliding rods are slidably connected to the annular plate, and each group of sliding rods is arranged in a circular array state. Both ends of the sliding rod are fixed to the inside of the cylinder body and the installation ring respectively. A threaded sleeve is fixed on the annular plate. A threaded rod is threadedly engaged with the threaded sleeve. One end of the threaded rod is rotatably connected to the upper end of the installation ring. A driving motor for driving the threaded rod is installed inside the cylinder body.

[0008] Preferably, the cleaning component includes a first support ring and a second support ring arranged inside the cylinder body. The first support ring is fixed inside the cylinder body. The first support ring and the second support ring are connected and fixed by a plurality of groups of connecting rods. The second support ring is located below the first support ring. The filter belt passes through and abuts between the installation ring, the first support ring and the second support ring. A ring-shaped scraping plate for abutting and extruding the outer surface of the filter belt is fixed at the lower end of the second support ring. A ring-shaped collection box for collecting after scraping and separating is installed inside the cylinder body by means of threads.

[0009] Preferably, the treatment component includes an annular installation groove opened on the installation ring. An annular cover is rotatably connected to the inside of the annular installation groove through a sliding component. The annular cover is concentric with the annular installation groove. A plurality of groups of uniformly arranged partition plates are fixed inside the annular cover. The inside of the annular cover is divided into a plurality of groups of installation cavities under the action of the plurality of groups of partition plates. A blowing and separating component for blowing and separating the mesh holes of the cleaned filter belt is arranged inside the installation cavity. A rotating component for rotating the annular cover is arranged on the installation ring.

[0010] Preferably, the air blowing and separating assembly includes a piston plate slidably connected to the inside of the installation cavity. A pushing assembly for pushing the piston plate is arranged inside the annular cover and the annular installation groove. A first one-way valve and a second one-way valve are installed on the installation cavity. The conduction direction of the first one-way valve is from the inside of the installation cavity to the outside of the annular cover, and the air outlet end of the first one-way valve faces the filter belt. The conduction direction of the second one-way valve is from the outside of the annular cover to the inside of the installation cavity. An extrusion assembly for extruding the filter belt during the air blowing and separating process is arranged on the piston plate.

[0011] Preferably, the extrusion assembly includes two sets of extrusion rods that are symmetrically arranged in the vertical direction and slidably connected to the inside of the installation cavity. One end of the extrusion rod is located outside the annular cover and is used to abut and support the inner side of the filter belt. The other end of the extrusion rod is located inside the installation cavity and is fixed to the piston plate. A spring is sleeved on the outside of the extrusion rod.

[0012] Preferably, the sliding assembly includes an annular sliding groove opened inside the annular installation groove. An annular sliding plate is slidably connected to the inside of the annular sliding groove. The annular sliding plate is fixed to the upper end of the annular cover and is concentrically arranged. The rotating assembly includes a mounting shaft rotatably connected to the mounting ring. One end of the mounting shaft is fixed to the end of the threaded rod. The other end of the mounting shaft is located inside the annular installation groove and is fixed with a gear. A toothed ring is fixed to the outside of the annular cover. The gear and the toothed ring are meshed with each other.

[0013] Preferably, the pushing assembly includes a push rod slidably connected to the annular cover. One end of the push rod is located inside the installation cavity and is fixed to the piston plate. The other end of the push rod is located inside the annular installation groove. A plurality of hemispherical protrusions for abutting and extruding the end of the push rod are fixed inside the annular installation groove.

[0014] Preferably, the support assembly includes a support disc arranged on the inner side of the filter belt and abutting against the inner bottom. A spline cylinder is fixed to the upper end of the support disc. A spline shaft is slidably connected to the spline cylinder. The spline shaft is installed inside the cylinder body through a mounting frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are: During the operation of the gravel crushing and dust removal equipment for building construction of the present invention, through the mutual cooperation of the dust removal component, the support component, the lifting component, the cleaning component and the treatment component, it can not only filter and separate the dust particles dispersed in the gas, but also scrape and clean the dense filter cake formed on the outer side of the filter belt, facilitating the continuous dust filtration and separation treatment of the filter during the gravel crushing process. And during the cleaning process, through transmission, the dust mass that migrates horizontally into the interior of the filter belt under the thrust of the annular scraper during the scraping and cleaning process is separated from the inside out, improving the cleaning effect of the filter belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall external structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the feed box after the cylinder body of the present invention is installed on the feed box; Figure 3 is a schematic diagram of the structure of the filter and the dust removal component of the present invention; Figure 4 is a schematic diagram of the structure of the support component of the present invention; Figure 5 is a schematic diagram of the structure of the cleaning component of the present invention; Figure 6 is a schematic diagram of the structures of the lifting component, the treatment component, the sliding component and the rotating component of the present invention; Figure 7 is a schematic diagram of the interior of the annular cover of the present invention; Figure 8 is a schematic diagram of the structures of the rotating component, the blowing and separating component, the squeezing component and the pushing component of the present invention; Figure 9 is a schematic diagram of the gas flow and transportation direction during the use of the filter of the present invention; Figure 10 is a schematic diagram of the blowing direction of the blowing and separating component of the present invention to the filter belt; Figure 11 is a schematic diagram of the falling direction of the sticky dust mass after being cleaned and separated by the cleaning component of the present invention.

[0017] In the figure: 101 - frame; 102 - feed box; 103 - feed inlet; 104 - crushing component; 201 - cylinder body; 202 - mounting hole; 203 - air inlet hole; 204 - fan; 301 - annular plate; 302 - filter belt; 401 - support disc; 402 - spline cylinder; 403 - spline shaft; 404 - mounting bracket; 501 - mounting ring; 502 - slide bar; 503 - threaded sleeve; 504 - threaded rod; 505 - drive motor; 601 - first support ring; 602 - second support ring; 603 - connecting rod; 604 - annular scraper; 605 - annular collection box; 701 - annular mounting groove; 702 - annular cover; 703 - partition; 801 - annular sliding groove; 802 - annular slide plate; 901 - mounting shaft; 902 - gear; 903 - gear ring; 1001 - piston plate; 1002 - first one-way valve; 1003 - second one-way valve; 1101 - extrusion rod; 1102 - spring; 1201 - push rod; 1202 - hemispherical protrusion. Specific embodiments

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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 the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0019] Please refer to Figures 1 - 11 , a gravel crushing and dust removal device for building construction shown in the figure, comprising a crushing component for crushing building construction gravel and a filter for dust removal of the gas during the crushing process. The crushing component includes a frame 101 and a feed box 102 arranged above the frame 101. Feed inlets 103 are opened on both sides of the feed box 102, and a crushing component 104 for crushing the gravel after entering is arranged inside the frame 101; It should be noted here that: the frame 101, the feed box 102, the feed inlet 103 and the crushing component 104 are conventional technical components in the crushing process, and their working principles and operation methods are regarded as existing technologies in this application and will not be elaborated here; The filter includes a cylinder body 201. A mounting hole 202 is opened at the upper end of the feed box 102. The cylinder body 201 is detachably mounted inside the mounting hole 202 by means of threads. An air inlet hole 203 for air intake is opened on the cylinder body 201, and a fan 204 for air extraction is mounted at the upper end of the cylinder body 201; It should be noted here that: the cylinder body 201, the mounting hole 202, the air inlet hole 203 and the fan 204 are conventional technical components on the filter, and their working principles and operation methods are regarded as the prior art in this application and will not be elaborated here; It further includes: a dust removal assembly, which is arranged inside the cylinder body 201 and is used for filtering the dust existing in the gas during the circulation and transportation process; a support assembly, which is arranged between the cylinder body 201 and the dust removal assembly and is used for internally supporting the dust removal assembly; a lifting assembly, which is arranged between the cylinder body 201 and the dust removal assembly and is used for assisting the lifting of the dust removal assembly; and a cleaning assembly, which is arranged inside the cylinder body 201 and is used for cleaning the viscous dust clusters on the surface of the dust removal assembly to form a dense filter cake during the lifting process. A processing assembly for dealing with the blockage of the mesh holes on the dust removal assembly during the cleaning process is arranged on the cleaning assembly; It should be noted here that: during the operation of the gravel crushing and dust removal equipment for construction, through the mutual cooperation of the dust removal assembly, the support assembly, the lifting assembly, the cleaning assembly and the processing assembly, not only can the dispersed dust particles in the gas be filtered and separated, but also the dense filter cake attached to the outside of the filter belt 302 can be scraped and cleaned, which is convenient for the continuous dust filtration and separation treatment of the filter during the gravel crushing process. And during the cleaning process, through transmission, the dust clusters that are laterally migrated into the interior of the filter belt 302 under the thrust of the annular scraper 604 during the scraping and cleaning process are separated from the inside to the outside, improving the cleaning effect of the filter belt 302.

[0020] Preferably, the dust removal assembly includes an annular plate 301 arranged inside the cylinder body 201. A filter belt 302 for filtering the dust in the gas is fixed at the lower end of the annular plate 301, and the filter belt 302 is provided with mesh holes; It should be noted here that: when the fan 204 is started, under the driving action of the fan 204, part of the gas inside the feed box 102 and the dust generated during the gravel crushing process are sucked into the interior of the cylinder body 201 through the feed port 103. The sucked gas and dust pass through the filter belt 302 after entering the interior of the cylinder body 201 and are finally discharged outward through the fan 204. During the transportation process, the dispersed dust particles in the gas are filtered and separated by the filter belt 302.

[0021] Preferably, the lifting assembly includes a mounting ring 501 disposed inside the annular plate 301. A plurality of sliding rods 502 are slidably connected to the annular plate 301, and each group of sliding rods 502 is arranged in an annular array. Both ends of the sliding rod 502 are fixed to the inside of the cylinder body 201 and the mounting ring 501 respectively. A threaded sleeve 503 is fixed to the annular plate 301. A threaded rod 504 is threadedly engaged with the threaded sleeve 503. One end of the threaded rod 504 is rotatably connected to the upper end of the mounting ring 501. A driving motor 505 for driving the threaded rod 504 is installed inside the cylinder body 201; It should be noted here that: by the driving motor 505, the threaded rod 504 is driven to rotate. During the rotation of the threaded rod 504, through the meshing transmission between the threaded rod 504 and the threaded sleeve 503, the annular plate 301 is forced to move. During the movement of the annular plate 301, through the sliding guiding action of each group of sliding rods 502, the annular plate 301 after being stressed performs a lifting movement.

[0022] Preferably, the cleaning assembly includes a first support ring 601 and a second support ring 602 disposed inside the cylinder body 201. The first support ring 601 is fixed inside the cylinder body 201. The first support ring 601 and the second support ring 602 are connected and fixed by a plurality of connecting rods 603. The second support ring 602 is located below the first support ring 601. The filter belt 302 passes through and abuts between the mounting ring 501, the first support ring 601 and the second support ring 602. A ring-shaped scraping plate 604 for abutting and extruding the outer surface of the filter belt 302 is fixed to the lower end of the second support ring 602. A ring-shaped collection box 605 for collecting the separated materials after scraping is installed inside the cylinder body 201 by means of threads; It should be noted here that: through the lifting assembly, the annular plate 301 moves upward inside the cylinder body 201. During the movement of the annular plate 301, the filter belt 302 is driven to pass through between the mounting ring 501, the first support ring 601 and the second support ring 602. During the passing process, through the supporting action of the mounting ring 501 on the inner side of the filter belt 302, the supporting action of the first support ring 601 and the second support ring 602 on the outer side of the filter belt 302, and the abutting action of the ring-shaped scraping plate 604 and the outer side of the filter belt 302, the dense filter cake formed on the outer side of the filter belt 302 is scraped and cleaned by contact extrusion, ensuring the effective cleaning operation of the dense filter cake. The scraped filter cake falls into the inside of the ring-shaped collection box 605 under the action of gravity for collection. By scraping and cleaning the dense filter cake formed on the outer side of the filter belt 302, it is convenient for the continuous dust filtration and separation treatment of the filter during the crushing process of the crushed stone.

[0023] Preferably, the processing component includes an annular mounting groove 701 formed in the mounting ring 501. An annular cover 702 is rotatably connected to the inside of the annular mounting groove 701 through a sliding component. The annular cover 702 is concentric with the annular mounting groove 701. A plurality of groups of evenly arranged partition plates 703 are fixed inside the annular cover 702. And the inside of the annular cover 702 is divided into a plurality of mounting cavities under the action of the plurality of groups of partition plates 703. A blowing and separating component for blowing and separating the mesh holes of the cleaned filter belt 302 is arranged inside the mounting cavity. A rotating component for rotating the annular cover 702 is arranged on the mounting ring 501; The blowing and separating component includes a piston plate 1001 slidably connected to the inside of the mounting cavity. A pushing component for pushing the piston plate 1001 is arranged inside the annular cover 702 and the annular mounting groove 701. A first one-way valve 1002 and a second one-way valve 1003 are installed on the mounting cavity. The conducting direction of the first one-way valve 1002 is from the inside of the mounting cavity to the outside of the annular cover 702, and the air outlet end of the first one-way valve 1002 faces the filter belt 302. The conducting direction of the second one-way valve 1003 is from the outside of the annular cover 702 to the inside of the mounting cavity. An extrusion component for extruding the filter belt 302 during the blowing and separating process is arranged on the piston plate 1001; It should be noted here that: through transmission, while the annular cover 702 rotates, the piston plates 1001 inside each mounting cavity are forced to move reciprocally. Since the conducting direction of the first one-way valve 1002 is from the inside of the mounting cavity to the outside of the annular cover 702, and the air outlet end of the first one-way valve 1002 faces the filter belt 302, and the conducting direction of the second one-way valve 1003 is from the outside of the annular cover 702 to the inside of the mounting cavity, through the reciprocating movement of the piston plate 1001, the external air is inhaled into the inside of the mounting cavity through the second one-way valve 1003 and sprayed out from the first one-way valve 1002 towards the pulled filter belt 302 by extrusion. The dust clusters that migrate horizontally into the filter belt 302 under the thrust of the annular scraping plate 604 during the scraping and cleaning process are separated from the inside to the outside by the sprayed gas, improving the cleaning effect of the filter belt 302.

[0024] Preferably, the extrusion component includes two groups of extrusion rods 1101 that are symmetrically arranged in the vertical direction and are slidably connected to the inside of the mounting cavity. One end of the extrusion rod 1101 is located outside the annular cover 702 and is used to abut and support the inner side of the filter belt 302. The other end of the extrusion rod 1101 is located inside the mounting cavity and is fixed to the piston plate 1001. A spring 1102 is sleeved on the outside of the extrusion rod 1101; It should be noted here that when the piston plate 1001 moves towards the filter belt 302 for extrusion and air injection, it pushes the two sets of extrusion rods 1101 to abut against the inner surface of the filter belt 302. During the abutting process, the apertures of the mesh holes on the filter belt 302 increase under the action of the extrusion force. Through the increase in the apertures, it is convenient for the dust clusters pressed into the inner mesh holes of the filter belt 302 to be effectively separated during the air blowing cleaning process; It should be noted here that the filter belt 302 used in this application has toughness under the action of its own material and will have slight deformation after being extruded, achieving the effect of increasing the aperture of the mesh holes.

[0025] Preferably, the sliding assembly includes an annular sliding groove 801 formed inside the annular installation groove 701. An annular sliding plate 802 is slidably connected inside the annular sliding groove 801. The annular sliding plate 802 is fixed to the upper end of the annular cover 702 and is concentrically arranged; It should be noted here that through the annular sliding groove 801 and the annular sliding plate 802, it is convenient to assist in the sliding connection of the annular cover 702. Through the sliding connection function, it is convenient to assist the rotation operation of the annular cover 702 after being pressed.

[0026] The rotating assembly includes a mounting shaft 901 rotatably connected to the mounting ring 501. One end of the mounting shaft 901 is fixed to the end of the threaded rod 504. The other end of the mounting shaft 901 is located inside the annular installation groove 701 and is fixed with a gear 902. A toothed ring 903 is fixed to the outside of the annular cover 702. The gear 902 and the toothed ring 903 are meshed with each other; It should be noted here that during the rotation of the threaded rod 504, it drives the mounting shaft 901 to rotate. Through the rotation of the mounting shaft 901, it drives the gear 902 to rotate. During the rotation of the gear 902, through the meshing transmission between the gear 902 and the toothed ring 903, the annular cover 702 is forced to rotate.

[0027] Preferably, the pushing assembly includes a push rod 1201 slidably connected to the annular cover 702. One end of the push rod 1201 is located inside the installation cavity and is fixed to the piston plate 1001. The other end of the push rod 1201 is located inside the annular installation groove 701. Multiple hemispherical protrusions 1202 for abutting and extruding the end of the push rod 1201 are fixed inside the annular installation groove 701; It should be noted here that when scraping and cleaning the dense filter cake by pulling up the filter belt 302, through transmission, the annular cover 702 is driven to rotate inside the annular installation groove 701. During the rotation of the annular cover 702, one end of the push rod 1201 abuts against each group of hemispherical protrusions 1202 in turn. Through the abutting and squeezing action between the hemispherical protrusion 1202 and the end of the push rod 1201 and the resetting action of the spring 1102 on the piston plate 1001 after movement, the piston plate 1001 inside each installation cavity is forced to reciprocate while the annular cover 702 rotates.

[0028] Preferably, the support assembly includes a support disk 401 disposed inside the filter belt 302 and abutting against the inner bottom. A spline cylinder 402 is fixed to the upper end of the support disk 401. A spline shaft 403 is slidably connected to the spline cylinder 402. The spline shaft 403 is installed inside the cylinder body 201 through a mounting frame 404. It should be noted here that through the abutting action between the support disk 401 and the inner bottom of the filter belt 302, the filter belt 302 is assisted to be in a stretched state, avoiding deformation of the filter belt 302 during use. Through the spline cylinder 402 and the spline shaft 403, it is convenient to assist the telescopic connection of the support disk 401.

[0029] In this solution: A gravel crushing and dust removal device for building construction includes the following steps: During the operation of the gravel crushing and dust removal device for building construction, the cylinder body 201 is installed on the top of the feed box 102 by means of threads. After installation, the fan 204 is started. Through the driving action of the fan 204, part of the gas inside the feed box 102 and the dust generated during the gravel crushing process are inhaled into the cylinder body 201 through the feed port 103. The inhaled gas and dust pass through the filter belt 302 after entering the cylinder body 201 and are finally discharged outward through the fan 204 (see Figure 9 ), and during the conveying process, the dust particles dispersed in the gas are filtered and separated by the filter belt 302; As the filtration and separation of dust particles proceed, the high-humidity dust generated in the processing environment forms lumps and adheres to the surface of the filter belt 302 to form a dense filter cake. To ensure the efficient dust filtration operation of the filter belt 302, the filter belt 302 is cleaned. During the cleaning process, through the lifting component, the annular plate 301 moves upward inside the cylinder body 201. During the movement of the annular plate 301, the filter belt 302 is driven to pass through between the mounting ring 501, the first support ring 601, and the second support ring 602. During the passing process, through the supporting effect of the mounting ring 501 on the inner side of the filter belt 302, the supporting effect of the first support ring 601 and the second support ring 602 on the outer side of the filter belt 302, and the abutting effect of the annular scraper 604 against the outer side of the filter belt 302, the dense filter cake formed by adhesion on the outer side of the filter belt 302 is subjected to contact extrusion scraping and cleaning to ensure effective cleaning operation of the dense filter cake. The scraped filter cake falls into the inside of the annular collection box 605 under the action of gravity for collection (see Figure 11 ), through the scraping and cleaning of the dense filter cake formed by adhesion on the outer side of the filter belt 302, it is convenient for the continuous dust filtration and separation treatment of the filter during the gravel crushing process; When scraping and cleaning the dense filter cake by pulling up the filter belt 302, through transmission, the annular cover 702 is driven to rotate inside the annular installation groove 701. During the rotation of the annular cover 702, one end of the push rod 1201 abuts against each group of hemispherical protrusions 1202 in sequence. Through the abutting and extrusion action between the hemispherical protrusion 1202 and the end of the push rod 1201 and the reset action of the spring 1102 on the piston plate 1001 after movement, the piston plate 1001 inside each installation cavity is forced to move reciprocally while the annular cover 702 rotates. Since the conduction direction of the first one-way valve 1002 is from the inside of the installation cavity to the outside of the annular cover 702, and the air outlet end of the first one-way valve 1002 is arranged towards the filter belt 302, and the conduction direction of the second one-way valve 1003 is from the outside of the annular cover 702 to the inside of the installation cavity. Through the reciprocating movement of the piston plate 1001, the external air is inhaled into the inside of the installation cavity through the second one-way valve 1003 and is ejected towards the pulled filter belt 302 through extrusion from the first one-way valve 1002. The dust clusters that migrate horizontally into the filter belt 302 under the thrust of the annular scraper 604 during the scraping and cleaning process are separated from the inside out by the ejected gas, improving the cleaning effect of the filter belt 302. And when the piston plate 1001 moves towards the filter belt 302 for extrusion and jetting, the two extrusion rods 1101 are pushed to abut against the inner surface of the filter belt 302. During the abutting process, the mesh holes on the filter belt 302 increase in aperture under the action of the extrusion force. Through the increase in aperture, it is convenient for the dust clusters pressed into the mesh holes inside the filter belt 302 to be effectively separated during the air blowing cleaning process. After the cleaning process of the filter belt 302 is completed, through transmission, the annular plate 301 moves downward. During the downward movement of the annular plate 301, due to the supporting effect of the supporting disk 401 on the filter belt 302 by the supporting assembly and the gravity of the supporting disk 401, the filter belt 302 is reset. Through the reset of the filter belt 302, it is convenient to repeat the dust filtration and separation process.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gravel crushing and dust removal device for building construction, comprising: A crushing assembly for crushing gravel used in building construction and a filter for dust removal of the gas during the crushing process. The crushing assembly includes a frame (101) and a feeding box (102) arranged above the frame (101). Feeding ports (103) are provided on both sides of the feeding box (102). Inside the frame (101), there is a crushing component (104) for crushing the gravel after it enters. The filter includes a cylinder body (201). An installation hole (202) is provided at the upper end of the feeding box (102). The cylinder body (201) is detachably installed inside the installation hole (202) by means of threads. An air inlet hole (203) for air intake is provided on the cylinder body (201). A blower (204) for air extraction is installed at the upper end of the cylinder body (201); It is characterized in that it further includes: A dust removal assembly arranged inside the cylinder body (201) for filtering and treating the dust existing in the gas during the circulation and transportation process; A support assembly arranged between the cylinder body (201) and the dust removal assembly for internally supporting the dust removal assembly; A lifting assembly arranged between the cylinder body (201) and the dust removal assembly for assisting in lifting the dust removal assembly; And, a cleaning assembly arranged inside the cylinder body (201) for cleaning the viscous dust clusters on the surface of the dust removal assembly during the lifting process to form a dense filter cake, and a treatment assembly for unclogging the mesh holes on the dust removal assembly during the cleaning process is provided on the cleaning assembly.

2. The gravel crushing and dust removal equipment for building construction according to claim 1, wherein: The dust removal assembly includes an annular plate (301) arranged inside the cylinder body (201). A filter belt (302) for filtering dust in the gas is fixed at the lower end of the annular plate (301). Mesh holes are provided on the filter belt (302).

3. The gravel crushing and dust removal equipment for building construction according to claim 2, characterized in that: The lifting assembly includes an installation ring (501) arranged inside the annular plate (301). A plurality of sliding rods (502) are slidably connected to the annular plate (301), and each group of sliding rods (502) is arranged in a circular array state. Both ends of the sliding rod (502) are fixed to the inside of the cylinder body (201) and the installation ring (501) respectively. A threaded sleeve (503) is fixed to the annular plate (301). A threaded rod (504) is threadedly engaged with the threaded sleeve (503). One end of the threaded rod (504) is rotatably connected to the upper end of the installation ring (501). A driving motor (505) for driving the threaded rod (504) is installed inside the cylinder body (201).

4. A gravel crushing and dust removal device for building construction according to claim 3, characterized in that: The cleaning component includes a first support ring (601) and a second support ring (602) disposed inside the cylinder body (201). The first support ring (601) is fixed inside the cylinder body (201). The first support ring (601) and the second support ring (602) are connected and fixed by a plurality of groups of connecting rods (603). The second support ring (602) is located below the first support ring (601). The filter belt (302) passes through and abuts between the mounting ring (501), the first support ring (601), and the second support ring (602). A ring-shaped scraping plate (604) for abutting and squeezing the outer surface of the filter belt (302) is fixed to the lower end of the second support ring (602). A ring-shaped collection box (605) for collecting the material after scraping and separation is installed inside the cylinder body (201) by means of threads.

5. The gravel crushing and dust removal equipment for building construction according to claim 4, characterized in that: The processing component includes a ring-shaped mounting groove (701) formed in the mounting ring (501). An annular cover (702) is rotatably connected inside the ring-shaped mounting groove (701) through a sliding component. The annular cover (702) is concentric with the ring-shaped mounting groove (701). A plurality of groups of uniformly arranged partition plates (703) are fixed inside the annular cover (702). The inside of the annular cover (702) is divided into a plurality of mounting cavities under the action of the plurality of groups of partition plates (703). A blowing and separating component for blowing and separating the mesh holes of the filter belt (302) after cleaning is arranged inside the mounting cavity. A rotating component for rotating the annular cover (702) is arranged on the mounting ring (501).

6. The gravel crushing and dust removal equipment for building construction according to claim 5, characterized in that: The blowing and separating component includes a piston plate (1001) slidably connected inside the mounting cavity. A pushing component for pushing the piston plate (1001) is arranged inside the annular cover (702) and the ring-shaped mounting groove (701). A first one-way valve (1002) and a second one-way valve (1003) are installed on the mounting cavity. The conduction direction of the first one-way valve (1002) is from the inside of the mounting cavity to the outside of the annular cover (702), and the air outlet end of the first one-way valve (1002) faces the filter belt (302). The conduction direction of the second one-way valve (1003) is from the outside of the annular cover (702) to the inside of the mounting cavity. An extrusion component for extruding the filter belt (302) during the blowing and separating process is arranged on the piston plate (1001).

7. The gravel crushing and dust removal equipment for building construction according to claim 6, characterized in that: The extrusion component includes two groups of extrusion rods (1101) symmetrically arranged in the vertical direction and slidably connected inside the mounting cavity. One end of the extrusion rod (1101) is located outside the annular cover (702) and is used for abutting and supporting the inner side of the filter belt (302). The other end of the extrusion rod (1101) is located inside the mounting cavity and is fixed to the piston plate (1001). A spring (1102) is sleeved on the outside of the extrusion rod (1101).

8. An apparatus for crushing and dedusting gravel used in construction, according to claim 5, wherein: The sliding component includes an annular sliding groove (801) formed inside the annular mounting groove (701). An annular sliding plate (802) is slidably connected inside the annular sliding groove (801). The annular sliding plate (802) is fixed to the upper end of the annular cover (702) and is concentrically arranged. The rotating component includes a mounting shaft (901) rotatably connected to the mounting ring (501). One end of the mounting shaft (901) is fixed to the end of the threaded rod (504). The other end of the mounting shaft (901) is located inside the annular mounting groove (701) and is fixed with a gear (902). A toothed ring (903) is fixed to the outside of the annular cover (702). The gear (902) and the toothed ring (903) are meshed with each other.

9. The gravel crushing and dust removal equipment for building construction according to claim 6, wherein: The pushing component includes a push rod (1201) slidably connected to the annular cover (702). One end of the push rod (1201) is located inside the mounting cavity and is fixed to the piston plate (1001). The other end of the push rod (1201) is located inside the annular mounting groove (701). Multiple hemispherical protrusions (1202) for abutting and squeezing the end of the push rod (1201) are fixed inside the annular mounting groove (701).

10. A gravel crushing and dust removal device for building construction according to claim 1, characterized in that: The supporting component includes a supporting disc (401) arranged inside the filter belt (302) and abutting against the inner bottom. A spline cylinder (402) is fixed to the upper end of the supporting disc (401). A spline shaft (403) is slidably connected to the spline cylinder (402). The spline shaft (403) is installed inside the cylinder body (201) through a mounting frame (404).

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