CN112195926A

CN112195926A - Feeding mechanism of pulp shooting machine

Info

Publication number: CN112195926A
Application number: CN202011042005.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Anhui Lanxi Engineering Technology Development Co ltd
Current assignee: Anhui Lanxi Engineering Technology Development Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-01-08

Abstract

The invention belongs to the technical field of building construction, and particularly relates to a feeding mechanism of a shotcrete machine, which comprises a screening unit, a collecting hopper, a distributing hopper and a rotary drum, wherein the collecting hopper is positioned below the screening unit, the distributing hopper is positioned below the collecting hopper, the distributing hopper is positioned above the rotary drum, a top plate is arranged between the collecting hopper and the rotary drum, a feeding hole is formed in the top plate, a material stirring impeller is arranged in the distributing hopper, and a plurality of drum cavities are uniformly arranged at intervals along the circumferential direction of the rotary drum; the aggregate bin guides the sand and the ash to a position between two adjacent blades of the material poking impeller; the feed inlet is in a vortex line shape. The material gets into the screening unit and sieves, and the fine material after the screening gets into through the collecting hopper and divides the hopper, divides the hopper to sweep the material gradually and pushes away to the section of thick bamboo intracavity, because the feed inlet is the vortex form, consequently the material can not pushed into the section of thick bamboo chamber in the twinkling of an eye, but drops downwards in certain stroke in succession, just so can make the even entering of material on each layer of baffle when each layer baffle is closed one by one.

Description

Feeding mechanism of pulp shooting machine

Technical Field

The invention belongs to the technical field of building construction, and particularly relates to a feeding mechanism of a shotcrete machine.

Background

Before building construction, a foundation pit needs to be excavated, and then construction of a building foundation is carried out in the foundation pit. In order to prevent the slope surface of the foundation pit from collapsing, the slope surface of the foundation pit generally needs to be reinforced, the common reinforcing mode is reinforcing steel bar net rack cement mortar, namely reinforcing steel bar nets are paved on the slope surface at present and then the cement mortar is sprayed on the slope surface. However, the laying process of the mesh reinforcement is before the guniting process, so the mesh reinforcement can block the grout to a certain extent during the guniting operation, the grout cannot fully fill the area right below the steel wire, but the phenomenon of hollowing of the slope protection surface layer is caused, and the construction quality is affected.

In addition, the shotcrete machine among the prior art is mostly multi-cylinder rotary shotcrete machine, and the principle of this shotcrete machine is similar to the structure of bullet going up of left-hand wheel rifle, loads the sand and ash at first in a plurality of barrel chambeies that the rotary drum circumference was arranged, with the sand and ash blowout when barrel chamber operation was to the wind channel, the defect of this kind of structure lies in that the sand and ash can be piled up in barrel chamber bottom after getting into the barrel chamber, consequently the material is too concentrated during the injection, and the whitewashing homogeneity is relatively poor.

Disclosure of Invention

The invention aims to provide a feeding mechanism of a shotcrete machine, which can screen sand ash and enable the sand ash to continuously and uniformly enter a cylinder cavity of the shotcrete machine so as to be uniformly sprayed out subsequently.

The technical scheme adopted by the invention is as follows:

a feeding mechanism of a shotcrete machine comprises a screening unit, a collecting hopper, a material distributing hopper and a rotary drum, wherein the screening unit is used for filtering sand ash, the collecting hopper is positioned below the screening unit, the material distributing hopper is positioned below the collecting hopper, the material receiving hopper is used for collecting the sand ash screened by the screening unit and guiding the sand ash into the material distributing hopper, the material distributing hopper is positioned above the rotary drum, a top plate is arranged between the material distributing hopper and the rotary drum, a feeding hole is formed in the top plate, a material shifting impeller is arranged in the material distributing hopper, the material shifting impeller and the rotary drum are synchronously and rotatably connected and arranged on a rack, the rotary drum is uniformly provided with a plurality of drum cavities at intervals along the circumferential direction, and each drum cavity and an area between each adjacent blade of the material shifting; the aggregate bin guides the sand and the ash to a position between two adjacent blades of the material poking impeller; the feed inlet is in a vortex line shape, and the feed inlet is gradually far away from the center of the material stirring impeller from one end to the other end.

The screening unit comprises a feeding conveyer belt and a cylindrical screen, the cylindrical screen is rotatably arranged on the rack, a rotating shaft is obliquely arranged, and one end of the feeding conveyer belt extends into the cylindrical screen.

The anti-blocking mechanism is arranged at the upper end of the screen, and comprises a knocking hammer which is assembled to knock the top of the screen on the barrel intermittently in the rotating process of the barrel-shaped screen.

The knocking hammer comprises a hammer head and a hammer handle, the hammer handle is pivoted with the rack, a ratchet wheel is arranged on the outer wall of the end part of the cylindrical screen, the hammer handle is lapped on the ratchet wheel, and when the cylindrical screen rotates, the ratchet wheel can intermittently lift the hammer handle and then release the hammer handle.

The device is characterized in that a slag discharging groove is further formed in the cylindrical screen, the slag discharging groove is located below a knocking region of the knocking hammer, the slag discharging groove is obliquely arranged, and the slag discharging groove is used for collecting particle impurities which can fall off after being knocked and guiding the particle impurities out of the cylindrical screen.

The motor is arranged on the frame and used for driving the cylindrical screen to rotate, a gear ring is arranged on the outer wall of the cylindrical screen, a gear is arranged on a main shaft of the motor, and the gear is meshed with the gear ring.

And all blades of the material stirring impeller are arranged in a vortex shape.

The included angle between the axis of the cylindrical screen and the horizontal direction is 15-30 degrees.

The axis of the cylindrical screen mesh forms an included angle of 20 degrees with the horizontal direction.

A patching machine comprises the patching machine feeding mechanism.

The invention has the technical effects that: the material gets into the screening unit and sieves, and the fine material after the screening gets into through the collecting hopper and divides the hopper, divides the hopper to sweep the material gradually and pushes away to the section of thick bamboo intracavity, because the feed inlet is the vortex form, consequently the material can not pushed into the section of thick bamboo chamber in the twinkling of an eye, but drops downwards in certain stroke in succession, just so can make the even entering of material on each layer of baffle when each layer baffle is closed one by one.

Drawings

FIG. 1 is a perspective view of a shotcrete machine provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a shotcrete machine provided by an embodiment of the present invention;

FIG. 3 is a top view of a feed mechanism provided by an embodiment of the present invention;

FIG. 4 is a perspective view of a rotary drum provided in an embodiment of the present invention;

FIG. 5 is a top view of a rotary drum provided by an embodiment of the present invention;

fig. 6 is a cross-sectional view taken along line D-D of fig. 5.

Detailed Description

In order that the objects and advantages of the invention will be more clearly understood, the following description is given in conjunction with the accompanying examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

Example 1

As shown in fig. 1 and 2, a shotcrete machine includes a feeding mechanism and a material homogenizing mechanism, the feeding mechanism includes a sieving unit, a collecting hopper 60, and a distributing hopper 70, the sieving unit is used for filtering sand ash, the collecting hopper 60 is located below the sieving unit, the distributing hopper 70 is located below the collecting hopper 60, the receiving hopper is used for collecting sand ash sieved by the sieving unit and guiding the sand ash into the distributing hopper 70, and a material shifting impeller 71 is arranged in the distributing hopper 70; the aggregate bin 60 guides the sand and ash to between two adjacent blades of the kick-off impeller 71; the material homogenizing mechanism comprises a rotary drum 80, the rotary drum 80 is rotatably arranged on a rack along a vertical axis, a material stirring impeller 71 is synchronously and rotatably connected with the rotary drum 80, the rotary drum 80 is uniformly provided with a plurality of independent drum cavities 801 at intervals along the circumferential direction, each drum cavity 801 and the area between each adjacent blade of the material stirring impeller 71 are arranged in a one-to-one correspondence manner, the upper end and the lower end of the rotary drum 80 are respectively provided with a top plate 81 and a bottom plate 82 fixedly connected with the rack, a material distributing hopper 70 is positioned above the top plate 81, the top surface and the bottom surface of the rotary drum 80 are respectively connected with the top plate 81 and the bottom plate 82 in a sliding and sealing manner, the top plate 81 is provided with a feeding hole 812, the bottom plate 82 is provided with a discharging hole 821, and the feeding hole; as shown in fig. 3, the feed inlet 812 is in a vortex shape, and the feed inlet 812 is gradually away from the center of the stirring impeller 71 from one end to the other end; as shown in fig. 2, 4 and 5, a plurality of partition plates 83 are arranged in the cylinder cavity 801 at intervals along the vertical direction, the partition plates 83 have two postures of vertical and horizontal, when the partition plates 83 are horizontal, the cylinder cavity 801 can be divided into a plurality of sub-cavities which are vertically arranged, and when the partition plates 83 are vertical, the sub-cavities can be communicated with each other to form a whole; the rotary drum 80 is provided with a partition 83 control mechanism, and the partition 83 control mechanism is assembled to be capable of sequentially driving each partition 83 from bottom to top to be switched from a vertical state to a horizontal state when the drum cavity 801 passes below the feed port 812, and capable of driving each partition 83 to be simultaneously switched from the horizontal state to the vertical state when the drum cavity 801 passes above the discharge port 821.

The materials enter the screening unit for screening, the screened fine materials enter the material distribution hopper 70 through the material collection hopper 60, the material distribution hopper 70 gradually sweeps and pushes the materials into the cylinder cavity 801, and the materials cannot be instantly pushed into the cylinder cavity 801 due to the fact that the feeding hole 812 is in a vortex shape, and continuously drop downwards in a certain stroke, so that the materials can uniformly enter each layer of partition plate 83 when each layer of partition plate 83 is closed one by one. According to the invention, the sand ash is blocked at different heights of the cylinder cavity 801 by the multilayer partition plates 83, so that the sand ash can flow downstream more uniformly during spraying, rather than being sprayed downstream by a stock of brains, and the spraying uniformity is effectively improved.

Specifically, as shown in fig. 4 and 5, the partition 83 is pivotally connected to the sidewall of the cylindrical cavity 801 through a horizontally disposed pivot 831, two ends of the pivot 831 penetrate through the outside of the cylindrical cavity 801, one end of the pivot 831 is provided with a shift lever 832 radially protruding along the pivot 831, a roller 85 blocking against the shift lever 832 is disposed at the side of the stroke of the cylindrical cavity 801 corresponding to the feed port 812, and the roller can push the shift lever 832 to switch the partition 83 from a vertical state to a horizontal state in the rotation process of the rotary cylinder 80; the number of the rollers is the same as that of the partition plates 83, the rollers are respectively arranged in one-to-one correspondence with the partition plates 83, and the rollers are uniformly arranged at intervals along the circumferential direction of the rotary drum 80 when viewed from the vertical direction; a first torsion spring 833 is arranged between the pivot 831 and the rotary cylinder 80, the first torsion spring 833 is assembled to enable the partition 83 in the horizontal posture to overturn to the vertical posture under the action of the elastic force of the first torsion spring 833, a locking mechanism 84 is arranged at one end of the pivot 831, which is far away from the deflector rod 832, the locking mechanism 84 is assembled to enable the partition 83 to be kept in the horizontal state when the partition 83 overturns to the horizontal posture, and the locking mechanism 84 can release the partition 83 to enable the partition 83 to overturn from the horizontal posture to the vertical posture under the action of the first torsion spring 833 when the cylinder cavity 801 moves to the discharge hole 821.

Preferably, as shown in fig. 6, the locking mechanism 84 includes a flat shaft 834 fixedly connected to an end of the pivot 831, and a locking block 841 slidably disposed on an outer wall of the cylindrical cavity 801, the locking block 841 is provided with a circular hole 842 and a flat hole 843 penetrating each other, and the locking block 841 has the following two stations along a sliding path: in the working position A, the circular hole 842 is matched with the flat shaft 834, the pivot 831 can rotate freely at the moment, the flat hole 843 in the working position B is matched with the flat shaft 834, the pivot 831 is locked in the circumferential direction at the moment, a third pressure spring 844 is arranged between the locking block 841 and the outer wall of the cylinder cavity 801, and the third pressure spring 844 is assembled so that the elastic force of the third pressure spring 844 can drive the locking block 841 to slide from the working position A to the working position B; the locking mechanism 84 further includes an unlocking unit that is equipped to be able to switch all the locking blocks 841 from station B to station a simultaneously when the cartridge chamber 801 is rotated above the discharge port 821; the unlocking unit comprises an unlocking rod 845, the unlocking rod 845 is connected with the outer wall of the cylinder cavity 801 in a sliding mode along the vertical direction, bosses 849 which are blocked and connected with the locking blocks 841 are arranged on the unlocking rod 845, arched convex portions 847 are further arranged on the unlocking rod 845, arched top blocks 848 are arranged on the rotation paths of the arched convex portions 847, when the cylinder cavity 801 rotates to the discharge hole 821, the arched convex portions 847 are pushed by the arched top blocks 848, the unlocking rod 845 is driven to slide, and at the moment, the bosses 849 push the locking blocks 841 to enable the locking blocks 841 to be switched from the station B to the station A; a fourth pressure spring 846 is arranged between the unlocking rod 845 and the outer wall of the cylinder cavity 801, and the fourth pressure spring 846 is assembled so that the elastic force of the fourth pressure spring 846 can drive a boss 849 on the unlocking rod 845 to move towards the direction far away from the locking block 841.

Preferably, a rotating shaft is fixedly connected to the centers of the rotary drum 80 and the material poking impeller 71, the rotating shaft penetrates through the top plate 81 and the bottom plate 82, the rotating shaft is rotatably connected with the frame, and a motor for driving the rotating shaft to rotate is arranged on the frame. A first air duct 811 is formed in the top plate 81, one end of the first air duct 811 is communicated with the air inlet pipe, and the other end of the first air duct 811 is arranged opposite to the discharge port 821 in the vertical direction; discharge gate 821 is last to be connect with discharging pipe 822, is equipped with second wind channel 823 along pipe wall tangential direction on the pipe wall of discharging pipe 822, and second wind channel 823 one end and discharging pipe 822 inner chamber intercommunication, the other end and air-supply line intercommunication.

Specifically, as shown in fig. 1 and 2, the screening unit includes a feeding conveyer belt 51 and a cylindrical screen 50, the cylindrical screen 50 is rotatably disposed on the frame and the rotating shaft is disposed obliquely, and one end of the feeding conveyer belt 51 extends into the cylindrical screen 50; the upper end of the screen is provided with an anti-blocking mechanism, the anti-blocking mechanism comprises a knocking hammer 52, and the knocking hammer 52 is assembled to intermittently knock the top of the screen on the cylinder in the rotating process of the cylindrical screen 50; the knocking hammer 52 comprises a hammer head 521 and a hammer handle 522, the hammer handle 522 is pivoted with the frame, a ratchet wheel 53 is arranged on the outer wall of the end part of the cylindrical screen 50, the hammer handle 522 is lapped on the ratchet wheel 53, and when the cylindrical screen 50 rotates, the ratchet wheel 53 can intermittently lift the hammer handle 522 and then release the hammer handle; a slag discharge groove 54 is further formed in the cylindrical screen 50, the slag discharge groove 54 is located below the knocking area of the knocking hammer 52, the slag discharge groove 54 is obliquely arranged, and the slag discharge groove 54 is used for collecting particle impurities which can fall after knocking and guiding the particle impurities out of the cylindrical screen 50.

Specifically, a motor used for driving the cylindrical screen 50 to rotate is arranged on the rack, a gear ring is arranged on the outer wall of the cylindrical screen 50, a gear is arranged on a main shaft of the motor, and the gear is meshed with the gear ring. The blades of the stirring impeller 71 are arranged in a vortex shape. The axis of the cylindrical screen 50 forms an angle of 15-30 degrees, preferably 20 degrees, with the horizontal direction.

Example 2

A method of feeding a shotcrete machine comprising the steps of:

step 1: screening the sand ash to filter out coarse particle impurities;

step 2: the screened sand ash is guided into a material distribution hopper 70, and a material poking impeller 71 is arranged in the material distribution hopper 70; the sand and ash are guided to the position between two adjacent blades of the material stirring impeller 71; a top plate 81 is arranged below the material distributing hopper 70, a rotary drum 80 is arranged below the top plate 81, the rotary drum 80 is rotatably arranged on the rack along a vertical axis, the material shifting impeller 71 is synchronously and rotatably connected with the rotary drum 80, a plurality of independent drum cavities 801 are uniformly arranged at intervals along the circumferential direction of the rotary drum 80, the areas between the adjacent blades of the material shifting impeller 71 and each drum cavity 801 are arranged in a one-to-one correspondence manner, and a feeding hole 812 is arranged on the top plate 81; the feed inlet 812 is in a vortex line shape, and the feed inlet 812 is gradually far away from the center of the material stirring impeller 71 from one end to the other end;

and step 3: sweeping and pushing the sand and ash in the material distributing hopper 70 into a cylinder cavity 801 of the rotary cylinder 80; a plurality of partition plates 83 are arranged in the barrel cavity 801 at intervals along the vertical direction, the partition plates 83 have two postures of vertical and horizontal, when the partition plates 83 are horizontal, the barrel cavity 801 can be divided into a plurality of sub-cavities which are vertically arranged, and when the partition plates 83 are vertical, the sub-cavities can be communicated with each other into a whole; the rotary drum 80 is provided with a partition plate 83 control mechanism, and the partition plate 83 control mechanism is assembled to be capable of sequentially driving each partition plate 83 from bottom to top to be switched from a vertical state to a horizontal state when the drum cavity 801 passes below the feed port 812; the sand ash is swept to the feed inlet 812 by the material sweeping impeller 71 in the rotating process, one of the cylinder cavities 801 just passes below the feed inlet 812 in the sweeping process of the material sweeping impeller 71 over the feed inlet 812, and the partition plates 83 in the cylinder cavity 801 are closed from bottom to top in sequence, so that the materials are uniformly retained on each layer of partition plates 83; a bottom plate 82 is arranged below the rotary drum 80, a discharge hole 821 is arranged on the bottom plate 82, and a feed hole 812 and the discharge hole 821 are respectively positioned at two sides of the rotary drum 80 which are far away from each other when viewed in the vertical direction;

and 4, step 4: when the barrel cavity 801 filled with the sand and the ash rotates to the position above the discharge port 821, the partition 83 control mechanism drives each partition 83 to be switched from a horizontal state to a vertical state simultaneously; a first air duct 811 is arranged on the top plate 81 above the discharge port 821, one end of the first air duct 811 is communicated with the air inlet pipe, and the other end of the first air duct 811 is arranged opposite to the discharge port 821 in the vertical direction; each baffle 83 overturns to every layer of sand and ash and gushes out and enter into the discharging pipe 822 that the discharging hole 821 below is connected from discharging hole 821 under the wind-force effect after vertical gesture, is equipped with second wind channel 823 along pipe wall tangential direction on the pipe wall of discharging pipe 822, and second wind channel 823 one end and discharging pipe 822 inner chamber intercommunication, the other end and air-supply line intercommunication, thereby sand and ash receive the wind-force disturbance of second wind channel 823 in discharging pipe 822 and be the outside blowout of heliciform.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention. Structures, devices, and methods of operation not specifically described or illustrated herein are generally practiced in the art without specific recitation or limitation.

Claims

1. The utility model provides a patching machine feed mechanism which characterized in that: the sand-dust separating machine comprises a screening unit, a collecting hopper (60), a separating hopper (70) and a rotary drum (80), wherein the screening unit is used for filtering sand-dust, the collecting hopper (60) is positioned below the screening unit, the separating hopper (70) is positioned below the collecting hopper (60), the receiving hopper is used for collecting the sand-dust screened by the screening unit and guiding the sand-dust into the separating hopper (70), the separating hopper (70) is positioned above the rotary drum (80) and a top plate (81) is arranged between the collecting hopper and the rotary drum (80), a feeding hole (812) is formed in the top plate (81), a material stirring impeller (71) is arranged in the separating hopper (70), the material stirring impeller (71) and the rotary drum (80) are synchronously and rotatably connected on a rack, a plurality of drum cavities (801) are uniformly arranged at intervals along the circumferential direction of the rotary drum (80), and areas between the drum cavities (801) and adjacent blades of the material stirring impeller (71) are; the aggregate bin (60) guides the sand and the ash to the position between two adjacent blades of the material poking impeller (71); the feed inlet (812) is in a vortex line shape, and the feed inlet (812) is gradually far away from the center of the material stirring impeller (71) from one end to the other end.

2. A shotcrete machine feed mechanism according to claim 1, wherein: the screening unit comprises a feeding conveying belt (51) and a cylindrical screen (50), the cylindrical screen (50) is rotatably arranged on the rack, a rotating shaft is obliquely arranged, and one end of the feeding conveying belt (51) extends into the cylindrical screen (50).

3. A shotcrete machine feed mechanism according to claim 2, wherein: the anti-blocking mechanism is arranged at the upper end of the screen, the anti-blocking mechanism comprises a knocking hammer (52), and the knocking hammer (52) is assembled to knock the top of the screen on the cylinder intermittently in the rotating process of the cylindrical screen (50).

4. A shotcrete machine feed mechanism according to claim 3, wherein: the knocking hammer (52) comprises a hammer head (521) and a hammer handle (522), the hammer handle (522) is pivoted with the rack, a ratchet wheel (53) is arranged on the outer wall of the end part of the cylindrical screen (50), the hammer handle (522) is lapped on the ratchet wheel (53), and when the cylindrical screen (50) rotates, the ratchet wheel (53) can intermittently lift the hammer handle (522) and then release the hammer handle.

5. A shotcrete machine feed mechanism according to claim 4, wherein: the cylindrical screen (50) is also internally provided with a slag discharge groove (54), the slag discharge groove (54) is positioned below the knocking area of the knocking hammer (52), the slag discharge groove (54) is obliquely arranged, and the slag discharge groove (54) is used for collecting particle impurities which can fall off after being knocked and guiding the particle impurities out of the cylindrical screen (50).

6. A shotcrete machine feed mechanism according to claim 5, wherein: the motor is arranged on the rack and used for driving the cylindrical screen (50) to rotate, a gear ring is arranged on the outer wall of the cylindrical screen (50), a gear is arranged on a main shaft of the motor, and the gear is meshed with the gear ring.

7. A shotcrete machine feed mechanism according to claim 1, wherein: the blades of the material stirring impeller (71) are arranged in a vortex shape.

8. A shotcrete machine feed mechanism according to claim 2, wherein: the included angle between the axis of the cylindrical screen (50) and the horizontal direction is 15-30 degrees.

9. A shotcrete machine feed mechanism according to claim 8, wherein: the included angle between the axis of the cylindrical screen (50) and the horizontal direction is 20 degrees.

10. A shotcrete machine comprising a feeder mechanism according to any one of claims 1-9.