CN213264640U - Powder conveyor is used in concrete production - Google Patents

Abstract

The utility model provides a powder conveyor is used in concrete production, includes first fixed plate and portal frame, and the portal frame is fixed at the middle part on first fixed plate top, and the one end at first fixed plate top is provided with first supporting mechanism, and first supporting mechanism includes four first pillars and a second fixed plate, and the fixed storage tank body that is equipped with from taking the solenoid valve in top of second fixed plate, the fixed first bellows that is equipped with of discharge gate of storage tank body. The utility model is provided with the blower, the blowing direction of the blower is consistent with the length direction of the material conveying pipe, the movement speed of the powder inside the material conveying pipe can be accelerated, the conveying efficiency is further improved, the powder blown out from the air inlet pipe moves along the length direction of the material conveying pipe, and the conveying effect is better; the output shaft through the motor drives the rotation axis to rotate, and then lets the transmission shaft drive the slider and slide in the inside of bow-shaped spacing frame, and the device's noise is less, can let the conveying pipeline rock about simultaneously.

Description

Powder conveyor is used in concrete production

Technical Field

The utility model belongs to the technical field of production, the processing of concrete, specifically be a powder conveyor is used in concrete production.

Background

In the production and processing process of the existing concrete, a material conveying device of the existing concrete is usually conveyed by a screw conveyer, however, the powder conveying mode has the following defects: firstly, the conveying speed is low by adopting spiral conveying, the conveying efficiency is low, and blockage is easily caused; secondly, the powder material weighing device does not have the weighing function, so that the powder material cannot be accurately weighed, larger errors exist in the batching of the powder material of the concrete, and certain adverse effects are generated on the quality of finished products of the concrete.

In order to solve the technical defects, patent document No. CN209257236U discloses a powder conveying device for concrete production, wherein a connecting pipe is fixedly installed on a first electric valve and is communicated with the first electric valve, a spring is fixedly installed on a second frame, a conveying pipe is fixedly installed on the spring through a first support, the conveying pipe is obliquely arranged, a vibration motor is fixedly installed on the conveying pipe, one end of the conveying pipe is communicated with the connecting pipe through a first connecting hose, an air inlet pipe is fixedly installed on the first frame, two side portions of the conveying pipe are respectively provided with a first air inlet in a row, and two side portions of the connecting pipe are respectively provided with a second air inlet.

The powder conveying device for concrete production has the following technical defects:

1) although the blowing mechanisms are arranged on the two sides of the material conveying pipe, the powder conveying efficiency of the material conveying pipe still has a space for improving;

2) the powder driving device of the device uses a vibration motor and an accessory mechanism thereof, thus being not beneficial to controlling noise in a factory;

therefore, the applicant improves and provides a powder conveying device for concrete production.

Disclosure of Invention

The utility model aims at improving the powder conveying efficiency of the powder conveying device for the concrete production of the type mentioned above and controlling the noise generated when the powder conveying device is operated, and the provided powder conveying device for the concrete production.

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a powder conveyor is used in concrete production, it includes first fixed plate and portal frame, the middle part on first fixed plate top is fixed to the portal frame, the one end at first fixed plate top is provided with first supporting mechanism, first supporting mechanism includes first pillar and second fixed plate, the fixed storage tank body that is equipped with the discharge gate from taking the solenoid valve in top of second fixed plate, the fixed first bellows that is equipped with of discharge gate of storage tank body, the bottom of first bellows is provided with conveying mechanism, the middle part of conveying pipeline bottom is provided with rocks the mechanism, the other end at first fixed plate top is provided with second supporting mechanism, second supporting mechanism includes cyclone, cyclone's bottom mounting is pegged graft and is had the first pipe from taking the solenoid valve, the middle part of fourth fixed plate is provided with weighing machine and constructs.

The second fixing plate is located at the top of the first fixing plate, the top ends of the four first supporting columns are fixedly connected with four corners of the bottom end of the second fixing plate respectively, and the bottom ends of the four first supporting columns are fixedly connected with the top end of the first fixing plate.

Above-mentioned conveying mechanism includes the conveying pipeline, the hair-dryer, the baffle, the second expansion hose, gas-supply pipe and intake pipe, the conveying pipeline is located the bottom of portal frame inner chamber, the fixed air intake of pegging graft at cyclone of second expansion hose, the one end of conveying pipeline and first expansion hose's bottom fixed connection, the other end of conveying pipeline and second expansion hose's one end fixed connection, the hair-dryer is fixed in conveying pipeline one side, the air outlet of hair-dryer runs through one side of conveying pipeline, and the axis of the air outlet of hair-dryer is in same straight line with the axis of conveying pipeline.

The one side at the conveying pipeline inner chamber is fixed to above-mentioned baffle, and the baffle is located the top of hair-dryer air outlet, the gas-supply pipe is located the top of conveying pipeline, and the one end and the peripheral hardware air supply unit intercommunication of gas-supply pipe, the intake pipe has a plurality of, the top of a plurality of intake pipe is fixed the both sides of pegging graft at the gas-supply pipe respectively, the bottom of a plurality of intake pipe is fixed the both sides of pegging graft at the conveying pipeline respectively, and the intake pipe pegs graft to the inside of conveying pipeline, the intake pipe slope that is located the conveying pipeline inside is placed, the air outlet of.

The swing mechanism comprises a fixed block, a motor, a rotating shaft, a transmission shaft, a sliding block, a sliding rod and an arched limiting frame, two ends of the fixed block are respectively fixedly connected with two sides of an inner cavity of a portal frame, the sliding rods are respectively connected to two ends of the fixed block in a sliding manner, two middle parts of two sides of the arched limiting frame are respectively fixedly connected with two opposite ends of the sliding rods, the sliding block is connected inside the arched limiting frame in a sliding manner, the top end of the arched limiting frame is fixedly connected with the bottom end of a conveying pipe, the top end of the transmission shaft is rotatably inserted into one side of the sliding block, the motor is fixed to one side of the fixed block, one end of the rotating shaft is fixedly connected with the end of an.

The second supporting mechanism comprises four second pillars, a third fixing plate and a fourth fixing plate, the top end of the third fixing plate is fixedly provided with a cyclone separator, the third fixing plate is located at the top of the first fixing plate, the top ends of the four second pillars are fixedly connected with four corners of the bottom end of the third fixing plate respectively, the bottom ends of the four second pillars are fixedly connected with the top end of the first fixing plate, and the fourth fixing plate is fixed at the middle part of the inner side of the four second pillars.

The fixed dustproof cloth that is equipped with of edge of above-mentioned third fixed plate bottom, the bottom of flexible dustproof cloth and the edge fixed connection on time shape pressure plate top, the fixed pressure display screen that is equipped with of one end of fourth fixed plate bottom.

Above-mentioned weighing mechanism includes the funnel, return the shape pressure plate, the fixed column, pressure sensor and from the second pipe of taking the solenoid valve, the funnel is located the top of fourth fixed plate, the through-hole has been seted up at the middle part on fourth fixed plate top, the fixed bottom of pegging graft at the funnel of second pipe, the inside at the through-hole is pegged graft in the second pipe activity, the both ends at fourth fixed plate top are all fixed and are equipped with the fixed column, the top of two fixed columns is all fixed and is equipped with pressure sensor, two pressure sensor's top all with the bottom fixed connection who returns the shape pressure plate, the outward flange department on funnel top and the interior flange fixed connection who returns the.

The middle parts of two sides of the conveying pipeline and one ends of two sides of the conveying pipeline are fixedly provided with lifting ropes, the top ends of the two lifting ropes are fixedly connected with two corners of the bottom end of the second fixing plate respectively, and the top ends of the other two lifting ropes are fixedly connected with two ends of the bottom of the inner cavity of the portal frame respectively.

Compared with the prior art, the utility model discloses a technological effect lies in:

1) the utility model is provided with the material conveying pipe, the blower is arranged on one side of the material conveying pipe, and the blowing direction of the blower is consistent with the length direction of the material conveying pipe, so that the movement speed of powder inside the material conveying pipe can be accelerated during work, and the conveying efficiency is further improved;

2) the air inlet pipe is obliquely arranged in the conveying pipe, so that the air blown out from the air inlet pipe can be ensured to move along the length direction of the conveying pipe, and compared with a device in the prior art, the conveying effect is better;

3) the output shaft of the motor drives the rotating shaft to rotate, and then the transmission shaft drives the sliding block to slide in the arc-shaped limiting frame, so that the arc-shaped limiting frame can drive the conveying pipe to swing left and right;

4) in addition, the clip-shaped pressure plate is connected with the bottom of the third fixing plate through the telescopic dustproof cloth, compared with a mode of connecting by using a hose in the prior art, the device has small interference on weighing, almost has no influence, and can better ensure the weighing precision.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic cross-sectional view of a first fixing plate according to the present invention;

fig. 3 is a schematic sectional view of the rocking mechanism of the present invention;

fig. 4 is a schematic top sectional view of the rocking mechanism of the present invention;

FIG. 5 is a schematic sectional view of the feed delivery pipe of the present invention;

fig. 6 is a schematic view of a partial cross-sectional structure of the middle weighing mechanism of the present invention.

In the figure: 1. a first fixing plate; 2. a gantry; 3. a first support; 4. a second fixing plate; 5. a storage tank body; 6. a first flexible hose; 7. a delivery pipe; 8. a blower; 9. a baffle plate; 10. a second flexible hose; 11. a gas delivery pipe; 12. an air inlet pipe; 13. a fixed block; 14. an electric motor; 15. a rotating shaft; 16. a drive shaft; 17. a slider; 18. a slide bar; 19. an arched limiting frame; 20. a second support; 21. a third fixing plate; 22. a fourth fixing plate; 23. a cyclone separator; 24. a first conduit; 25. a funnel; 26. a clip-shaped pressure plate; 27. fixing a column; 28. a pressure sensor; 29. a second conduit; 30. a telescopic dustproof cloth; 31. a pressure display screen; 32. a lifting rope.

Detailed Description

As shown in fig. 1 to 6, a powder conveying device for concrete production comprises a first fixing plate 1 and a portal frame 2, wherein the portal frame 2 is fixed in the middle of the top end of the first fixing plate 1, one end of the top of the first fixing plate 1 is provided with a first supporting mechanism, the first supporting mechanism comprises four first supporting columns 3 and a second fixing plate 4, the top end of the second fixing plate 4 is fixedly provided with a storage tank body 5 with a solenoid valve, a discharge port of the storage tank body 5 is fixedly provided with a first flexible hose 6, the bottom end of the first flexible hose 6 is provided with a conveying mechanism, the conveying mechanism comprises a conveying pipe 7, a blower 8, a baffle plate 9, a second flexible hose 10, a conveying pipe 11 and an air inlet pipe 12, the middle of the bottom end of the conveying pipe 7 is provided with a shaking mechanism, the shaking mechanism comprises a fixing block 13, a motor 14, a rotating shaft 15, a transmission shaft 16, a slide block 17, a, the other end at 1 top of first fixed plate is provided with second supporting mechanism, second supporting mechanism includes four second pillars 20, a third fixed plate 21 and a fourth fixed plate 22, the fixed cyclone 23 that is equipped with in top of third fixed plate 21, the bottom mounting of cyclone 23 is pegged graft and is had from the first pipe 24 of taking the solenoid valve, the middle part of fourth fixed plate 22 is provided with weighing mechanism, weighing mechanism includes funnel 25, it is back shape pressure plate 26, fixed column 27, pressure sensor 28 and from the second pipe 29 of taking the solenoid valve, the fixed flexible dustproof cloth 30 that is equipped with in edge of third fixed plate 21 bottom, the bottom of flexible dustproof cloth 30 and the edge fixed connection who returns shape pressure plate 26 top, the fixed pressure display screen 31 that is equipped with in one end of fourth fixed plate 22 bottom.

Second fixed plate 4 is located the top of first fixed plate 1, four first pillars 3 the top respectively with four edges fixed connection in 4 bottoms of second fixed plate, four first pillars 3 the bottom all with the top fixed connection of first fixed plate 1, can play the effect of support to second fixed plate 4 through first pillar 3, can play fixed effect to storage tank body 5 through being equipped with second fixed plate 4.

The feed delivery pipe 7 is positioned at the bottom end of an inner cavity of the portal frame 2, the second flexible hose 10 is fixedly inserted at an air inlet of the cyclone separator 23, one end of the feed delivery pipe 7 is fixedly connected with the bottom end of the first flexible hose 6, the other end of the feed delivery pipe 7 is fixedly connected with one end of the second flexible hose 10, the blower 8 is fixed at one side of the feed delivery pipe 7, an air outlet of the blower 8 penetrates through one side of the feed delivery pipe 7, the axis of the air outlet of the blower 8 and the axis of the feed delivery pipe 7 are in the same straight line, the baffle 9 is fixed at one side of the inner cavity of the feed delivery pipe 7, the baffle 9 is positioned at the top of the air outlet of the blower 8, the feed delivery pipe 11 is positioned at the top of the feed delivery pipe 7, one end of the feed delivery pipe 11 is communicated with an external air supply device, a plurality of air inlet pipes 12 are respectively fixedly inserted at two sides of, and intake pipe 12 pegs graft to the inside of conveying pipeline 7, the inside intake pipe 12 slope that is located conveying pipeline 7 is placed, the air outlet of intake pipe 12 sets up towards cyclone 23, through being equipped with conveying pipeline 7 and conveniently carrying cyclone 23 with the inside powder of storage tank body 5 inside, accelerate the inside powder delivery rate of conveying pipeline 7 through the wind-force that hair-dryer 8 produced, can prevent through baffle 9 that the inside powder of conveying pipeline 7 from flowing back to the inside of storage tank body 5, can blow in the inside of conveying pipeline 7 bottom tray through intake pipe 12 with the air current through gas-supply pipe 11, prevent the inside condition that the powder blockked up of appearing of conveying pipeline 7.

Two ends of a fixed block 13 are respectively fixedly connected with two sides of an inner cavity of a portal frame 2, two slide bars 18 are provided, the two slide bars 18 are respectively connected with two ends of the fixed block 13 in a sliding manner, the middle parts of two sides of an arched limiting frame 19 are respectively fixedly connected with the opposite ends of the two slide bars 18, a slide block 17 is connected inside the arched limiting frame 19 in a sliding manner, the top end of the arched limiting frame 19 is fixedly connected with the bottom end of a material conveying pipe 7, the top end of a transmission shaft 16 is rotatably inserted into one side of the slide block 17, a motor 14 is fixed on one side of the fixed block 13, one end of a rotating shaft 15 is fixedly connected with the end of an output shaft of the motor 14, the other end of the rotating shaft 15 rotatably penetrates through the fixed block 13 and is fixedly connected with the bottom end of one side of the transmission shaft 16, meanwhile, the rotating shaft 15 drives the transmission shaft 16 to rotate, the transmission shaft 16 drives the sliding block 17 to slide in the arched limiting frame 19, so that the arched limiting frame 19 can drive the conveying pipe 7 to swing left and right, powder is prevented from being accumulated in the conveying pipe 7 to block the conveying pipe 7, and the arched limiting frame 19 can be limited through the sliding rod 18.

Third fixed plate 21 is located the top of first fixed plate 1, the top of four second pillars 20 respectively with four edges fixed connection of third fixed plate 21 bottom, the bottom of four second pillars 20 all with the top fixed connection of first fixed plate 1, fourth fixed plate 22 is fixed at the inboard middle part of four second pillars 20, can play the effect of support to third fixed plate 21 and fourth fixed plate 22 through second pillar 20, can play fixed effect to cyclone 23 through being equipped with third fixed plate 21, can play fixed support's effect to funnel 25 through being equipped with fourth fixed plate 22.

The funnel 25 is located at the top of the fourth fixing plate 22, a through hole is formed in the middle of the top end of the fourth fixing plate 22, the second guide pipe 29 is fixedly inserted at the bottom end of the funnel 25, the second guide pipe 29 is movably inserted inside the through hole, fixing columns 27 are fixedly arranged at two ends of the top end of the fourth fixing plate 22, pressure sensors 28 are fixedly arranged at the top ends of the two fixing columns 27, the top ends of the two pressure sensors 28 are fixedly connected with the bottom end of the clip pressure plate 26, the outer edge of the top end of the funnel 25 is fixedly connected with the inner edge of the clip pressure plate 26, powder flowing out of the cyclone separator 23 can be contained through the funnel 25, the clip pressure plate 26 is arranged at the top end of the funnel 25, meanwhile, the clip pressure plate 26 moves downwards under the gravity action of the powder contained in the funnel 25, the clip pressure plate 26 exerts a pressure on the pressure sensors 28, and thus the powder in the funnel 25, meanwhile, the powder in the hopper 25 can be discharged to an external powder collecting device through the electromagnetic valve on the second conduit 29.

The middle part of conveying pipeline 7 both sides and the one end of both sides all are fixed and are equipped with lifting rope 32, wherein two lifting rope 32's top respectively with two edges fixed connection of 4 bottoms of second fixed plate, two other lifting rope 32's top respectively with the both ends fixed connection of portal frame 2 inner chamber bottoms, it is fixed to utilize lifting rope 32 to hoist conveying pipeline 7, so both can fix conveying pipeline 7, can guarantee simultaneously that conveying pipeline 7 rocks, and then can guarantee that the inside powder of conveying pipeline 7 can not block up.

Fixed the inlaying is equipped with flush mounting plate of switch on one of them first pillar 3, the last display switch that is provided with of flush mounting plate of switch, first electromagnetic switch, second electromagnetic switch, third electromagnetic switch, fan switch and electric switch, pressure display screen 31 is through display switch and external power supply electric connection, two pressure sensor 28 all with pressure display screen 31 electric connection, solenoid valve on the storage tank body 5 is through first electromagnetic switch and external power supply electric connection, solenoid valve on the first pipe 24 is through second electromagnetic switch and external power supply electric connection, solenoid valve on the second pipe 29 is through third electromagnetic switch and external power supply electric connection, hair-dryer 8 is through fan switch and external power supply electric connection, motor 14 is through motor switch and external power supply electric connection.

Optionally, the blower 8 may be of type 6SY7000-0AB67, the motor 14 may be of type YE2132M-4, the pressure display screen 31 may be of type SV-900, and the pressure sensor 28 may be of type HDYL-400A-T, which are conventional in the art and may be selected by those skilled in the art, and the selection of the type should not be limited to the description in the specification.

The utility model discloses when using, adopt following step:

1) opening an electromagnetic valve on the storage tank body 5 to enable powder inside the storage tank body 5 to flow into a material conveying pipe 7 through a first flexible hose 6;

2) the blower 8 is enabled to start to work, the blower 8 is arranged on one side of the conveying pipe 7, the blowing direction of the blower 8 is consistent with the length direction of the conveying pipe 7, therefore, in the working process, the moving speed of powder inside the conveying pipe 7 can be increased, the conveying efficiency is further improved, the powder inside the conveying pipe 7 is blown to the inside of the cyclone separator 23 by wind power generated by the blower 8, meanwhile, the air pipe 11 blows air flow into the conveying pipe 7 through the air inlet pipe 12, the air inlet pipe 12 is obliquely arranged inside the conveying pipe 7, the air flow blown out by the air inlet pipe 12 can be guaranteed to move along the length direction of the conveying pipe 7, the conveying effect is better, and the situation of powder blockage inside the conveying pipe 7 can be avoided;

3) the motor 14 starts to work, an output shaft of the motor 14 drives the rotating shaft 15 to rotate, meanwhile, the rotating shaft 15 drives the transmission shaft 16 to rotate, the transmission shaft 16 drives the sliding block 17 to slide in the arc-shaped limiting frame 19, so that the arc-shaped limiting frame 19 can drive the material conveying pipe 7 to sway left and right, powder is prevented from being accumulated in the material conveying pipe 7 to block the material conveying pipe 7, the output shaft of the motor 14 drives the rotating shaft 15 to rotate, the transmission shaft 16 drives the sliding block 17 to slide in the arc-shaped limiting frame 19, the arc-shaped limiting frame 19 can drive the material conveying pipe 7 to sway left and right, and the device is low in noise;

4) meanwhile, the material conveying pipe 7 can shake left and right, then the valve of the first conduit 24 is opened, and the powder inside the cyclone separator 23 flows into the hopper 25;

5) the pressure display screen 31 is enabled to work, meanwhile, the clip-shaped pressure plate 26 is contacted with the pressure sensor 28 under the action of the gravity of the funnel 25 and applies a pressure to the pressure sensor 28, the pressure sensor 28 feeds back pressure data to the pressure display screen 31, and the weight data of the concrete powder inside the funnel 25 is displayed through the pressure display screen 31;

6) when the concrete powder data in the hopper 25 reach a specified weight value, the electromagnetic valve on the first conduit 24 is closed, so that the concrete powder in the cyclone separator 23 cannot flow out, the telescopic dustproof cloth 30 connects the square-shaped pressure plate 26 with the bottom of the third fixing plate 21, dust can be prevented from flying into the air, meanwhile, the telescopic dustproof cloth 30 is provided with enough length, so that the telescopic dustproof cloth 30 is always in a loose state, the device has small interference on weighing, almost no influence is caused, and the weighing precision can be better ensured;

7) when the solenoid valve on the second conduit 29 is opened, the concrete powder in the hopper 25 flows into the external collecting device through the second conduit 29 to be used.

Claims (9)

1. A powder conveying device for concrete production is characterized by comprising a first fixing plate (1) and a portal frame (2), wherein the portal frame (2) is fixed in the middle of the top end of the first fixing plate (1), one end of the top of the first fixing plate (1) is provided with a first supporting mechanism, the first supporting mechanism comprises a first pillar (3) and a second fixing plate (4), the top end of the second fixing plate (4) is fixedly provided with a storage tank body (5) with a discharge port provided with an electromagnetic valve, the discharge port of the storage tank body (5) is fixedly provided with a first flexible hose (6), the bottom end of the first flexible hose (6) is provided with a conveying mechanism, the middle of the bottom end of a conveying pipe (7) is provided with a shaking mechanism, the other end of the top of the first fixing plate (1) is provided with a second supporting mechanism, the second supporting mechanism comprises a cyclone separator (23), the bottom end of the cyclone separator (23) is fixedly inserted with a first guide pipe (24) provided with an, the middle part of the fourth fixing plate (22) is provided with a weighing mechanism.

2. The powder conveying device for concrete production according to claim 1, wherein the second fixing plate (4) is located on top of the first fixing plate (1), the top ends of the four first supporting columns (3) are respectively fixedly connected with four corners of the bottom end of the second fixing plate (4), and the bottom ends of the four first supporting columns (3) are respectively fixedly connected with the top end of the first fixing plate (1).

3. The powder conveying device for concrete production according to claim 1, wherein: conveying mechanism includes conveying pipeline (7), hair-dryer (8), baffle (9), second expansion hose (10), gas-supply pipe (11) and intake pipe (12), conveying pipeline (7) are located the bottom of portal frame (2) inner chamber, the fixed air intake of pegging graft at cyclone (23) in second expansion hose (10), the one end of conveying pipeline (7) and the bottom fixed connection of first expansion hose (6), the other end of conveying pipeline (7) and the one end fixed connection of second expansion hose (10), hair-dryer (8) are fixed in conveying pipeline (7) one side, the air outlet of hair-dryer (8) runs through one side of conveying pipeline (7), and the axis of the air outlet of hair-dryer (8) is in same straight line with the axis of conveying pipeline (7).

4. The powder conveying device for concrete production according to claim 3, wherein: baffle (9) are fixed in one side of conveying pipeline (7) inner chamber, and baffle (9) are located the top of hair-dryer (8) air outlet, gas-supply pipe (11) are located the top of conveying pipeline (7), and the one end and the peripheral hardware air supply unit intercommunication of gas-supply pipe (11), intake pipe (12) have a plurality of, the top of a plurality of intake pipe (12) is fixed the both sides of pegging graft at gas-supply pipe (11) respectively, the bottom of a plurality of intake pipe (12) is fixed the both sides of pegging graft at conveying pipeline (7) respectively, and intake pipe (12) are pegged graft to the inside of conveying pipeline (7), intake pipe (12) that are located conveying pipeline (7) inside are inclined and are placed, the air outlet of intake pipe (12) sets up towards cyclone (23).

5. The powder conveying device for concrete production according to claim 1, wherein: the swing mechanism comprises a fixed block (13), a motor (14), a rotating shaft (15), a transmission shaft (16), two sliding blocks (17), two sliding rods (18) and an arched limiting frame (19), wherein two ends of the fixed block (13) are fixedly connected with two sides of an inner cavity of the portal frame (2) respectively, the two sliding rods (18) are respectively and slidably connected with two ends of the fixed block (13), the middle parts of two sides of the arched limiting frame (19) are fixedly connected with opposite ends of the two sliding rods (18) respectively, the sliding blocks (17) are slidably connected inside the arched limiting frame (19), the top end of the arched limiting frame (19) is fixedly connected with the bottom end of the material conveying pipe (7), the top end of the transmission shaft (16) is rotatably inserted into one side of the sliding blocks (17), the motor (14) is fixed on one side of the fixed block (13), one end of the rotating shaft (15) is fixedly connected with the end, the other end of the rotating shaft (15) rotatably penetrates through the fixing block (13) and is fixedly connected with the bottom end of one side of the transmission shaft (16).

6. The powder conveying device for concrete production according to claim 1 or 4, wherein the second supporting mechanism comprises four second supporting columns (20), a third fixing plate (21) and a fourth fixing plate (22), the top end of the third fixing plate (21) is fixedly provided with a cyclone separator (23), the third fixing plate (21) is positioned at the top of the first fixing plate (1), the top ends of the four second supporting columns (20) are fixedly connected with four corners of the bottom end of the third fixing plate (21), the bottom ends of the four second supporting columns (20) are fixedly connected with the top end of the first fixing plate (1), and the fourth fixing plate (22) is fixed in the middle of the inner sides of the four second supporting columns (20).

7. The powder conveying device for concrete production according to claim 6, wherein a telescopic dustproof cloth (30) is fixedly arranged at the edge of the bottom end of the third fixing plate (21), the bottom end of the telescopic dustproof cloth (30) is fixedly connected with the edge of the top end of the square-shaped pressure plate (26), and a pressure display screen (31) is fixedly arranged at one end of the bottom of the fourth fixing plate (22).

8. The powder conveying device for concrete production according to claim 1, weighing mechanism includes funnel (25), return shape pressure plate (26), fixed column (27), pressure sensor (28) and second pipe (29) from taking the solenoid valve, funnel (25) are located the top of fourth fixed plate (22), the through-hole has been seted up at the middle part on fourth fixed plate (22) top, the bottom in funnel (25) is pegged graft in second pipe (29) is fixed, second pipe (29) activity is pegged graft in the inside of through-hole, both ends at fourth fixed plate (22) top are all fixed and are equipped with fixed column (27), the top of two fixed columns (27) is all fixed and is equipped with pressure sensor (28), the top of two pressure sensor (28) all with the bottom fixed connection who returns shape pressure plate (26), the outer edge on funnel (25) top and the interior border fixed connection who returns shape pressure plate (26).

9. The powder conveying device for concrete production according to claim 1, wherein lifting ropes (32) are fixedly arranged at the middle part of two sides and one end of two sides of the conveying pipe (7), wherein the top ends of two lifting ropes (32) are fixedly connected with two corners of the bottom end of the second fixing plate (4), and the top ends of the other two lifting ropes (32) are fixedly connected with two ends of the bottom of the inner cavity of the portal frame (2).

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