Novel venturi powder spraying and mixing device

Abstract

The utility model discloses a novel venturi powder spraying and mixing device which is characterized in that high-speed gas is introduced through a gas inlet pipe, so that a gas flow nozzle sprays out the high-speed gas to pass through a throat section of an outer sleeve, and then a negative pressure area formed by an inlet section and a contraction section of the outer sleeve serves as a vacuum chamber and generates suction force; the negative pressure adsorption area generates suction force through the feeding pipe, powder in the powder bin is sucked into the gas-material buffer chamber in an unpowered mode and fully mixed in the gas-material mixing chamber, then the powder is diffused into the gas-powder conveying pipe through the gas-material diffusion chamber, and the gas-powder conveying pipe of a bent pipe structure can enable the powder to be deeply mixed and convey the powder into an equipment reactor. According to the structure, powder is fully mixed in the spraying process through the design of the shape of the Venturi tube of the outer sleeve, so that the product quality is improved; and the Venturi tube principle is adopted, additional power equipment is not needed for powder suction and conveying, and energy consumption and emission are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of powder mixing, in particular to a new Venturi powder injection mixing device. BACKGROUND

[0002] With the development of modern chemical technology, the quality and performance requirements of production equipment in the chemical industry are continuously improved, and the powder mixing device belongs to the production process machinery. Due to its unique characteristics, it is widely used in the building materials, chemical industry, food processing and other industries. The powder mixing device is applied more and more widely, and the performance requirements are higher and higher, and the technology is constantly updated.

[0003] In the prior art, the design of the powder inlet structure of the Venturi has defects, or improper operation during operation will cause powder blockage, and even powder clumps will appear inside the powder inlet throat diameter, increasing the difficulty of cleaning, and increasing the air intake and energy consumption, and the powder suction efficiency is low. In order to meet the requirements of mixing a plurality of powders in a certain proportion to form new powders, a new Venturi powder injection mixing device is urgently needed to solve the above problems. CONTENT OF THE INVENTION

[0004] In view of the deficiencies in the prior art, the present application aims to provide a new Venturi powder injection mixing device to solve the problems raised in the background art. The present application has a reasonable structure, good anti-blocking effect, small air intake and energy consumption, and high powder suction efficiency.

[0005] According to one aspect of the present application, a new Venturi powder injection mixing device comprises at least one injection device, each injection device comprising an air inlet pipe, an outer sleeve pipe and a feed pipe, the air inlet pipe being fixedly inserted into the outer sleeve pipe, the outer sleeve pipe being in the shape of a Venturi pipe, the upper end of the air inlet pipe being provided as an air inlet, the lower end of the air inlet pipe being provided as a gas flow nozzle, the gas flow nozzle being capable of spraying high-speed gas, the upper end of the inner part of the outer sleeve pipe being formed as a vacuum chamber, the lower part of the vacuum chamber being a gas- material buffer chamber, the lower part of the gas-material buffer chamber being a gas-material mixing chamber, and the lower part of the gas-material mixing chamber being a gas-material diffusion chamber.

[0006] The outer side wall of the outer sleeve pipe is connected with the feed pipe, one end of the feed pipe is in communication with the vacuum chamber, and the other end of the feed pipe is in communication with the powder bin. The position of the vacuum chamber connected with the feed pipe is formed as a negative pressure adsorption area, and the negative pressure adsorption area is used for non-powered suction of the powder in the powder bin.

[0007] The vacuum chamber is located at the inlet section and the contraction section of the outer sleeve pipe, the gas-material buffer chamber is located at the throat section of the outer sleeve pipe, and the gas-material mixing chamber and the gas-material diffusion chamber are located at the diffusion section of the outer sleeve pipe.

[0008] Preferably, the negative pressure adsorption zone is located in the constricted section of the outer sleeve, and the end of the gas flow nozzle is arranged towards the gas material buffer chamber.

[0009] Preferably, the feed pipe is in an inverted cone structure with the pipe diameter size being large at the top and small at the bottom.

[0010] Preferably, the powder bin is in an inverse closure cone structure at the position connected with the feed pipe.

[0011] Preferably, the outer sleeve is connected with the gas-powder conveying pipe at the outlet position of the gas material diffusion chamber, and the other end of the gas-powder conveying pipe is connected with the equipment reactor.

[0012] Preferably, the gas-powder conveying pipe is in a bent pipe structure.

[0013] Preferably, the powder bin is replaced by a controllable flow feeding device, the lower side of the controllable flow feeding device is connected with the feed pipe, the gas inlet pipe and the outer sleeve are arranged transversely, and the gas material buffer chamber is extended to be connected with the gas material mixing chamber through a bent pipe.

[0014] Preferably, the controllable flow feeding device can be selected from a screw conveyor, a star-type discharger, a flow control belt conveyor, an electromagnetic vibrating feeder, a pipe chain conveyor or a flow control gravity feeder.

[0015] Preferably, the injection device is replaced by a gas material uniform mixing device, which comprises a gas inlet pipe one, an expansion pipe, a distributor, a gas material contact chamber, a gas material buffer chamber one, a gas material mixing chamber one and a gas material diffusion chamber one, the lower end of the gas inlet pipe one is arranged as a gas inlet, the upper end of the gas inlet pipe is connected with the lower narrow end of the expansion pipe, the upper expanded end of the expansion pipe is connected with the lower side of the gas material contact chamber, the upper side of the gas material contact chamber is connected with the feed pipe at the lower side of the controllable flow feeding device, one side of the gas material contact chamber is connected with one end of the gas material buffer chamber one, the other end of the gas material buffer chamber one is connected with the upper end of the gas material mixing chamber one, the lower end of the gas material mixing chamber one is connected with the gas material diffusion chamber one, and the lower end of the gas material diffusion chamber is connected with the gas-powder conveying pipe.

[0016] Compared with the prior art, the application has the advantages that: the novel Venturi powder injection mixing device of the application introduces high-speed gas through the air inlet pipe, so that the high-speed gas sprayed by the gas flow nozzle passes through the throat section of the outer sleeve pipe, and then the inlet section and the contraction section of the outer sleeve pipe form a negative pressure area as a vacuum chamber and generate suction force, since the negative pressure adsorption area is located in the vacuum chamber, the negative pressure adsorption area generates suction force to suck the powder in the powder bin to the gas material buffer chamber through the feeding pipe without power, and then the powder is fully mixed in the gas material mixing chamber, and then diffused to the gas powder conveying pipe through the gas material diffusion chamber, the gas powder conveying pipe with the elbow structure can mix and convey the powder to the equipment reactor; in the above structure, the design of the Venturi pipe shape of the outer sleeve pipe enables the powder to be fully mixed during the injection process, thereby improving the product quality; and the Venturi pipe principle is adopted, so that the powder is sucked and conveyed without additional power equipment, thereby reducing energy consumption and emission; in addition, the gas flow nozzle sprays high-speed gas towards the gas material buffer chamber, which can also avoid the situation of powder accumulation and blockage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of a novel Venturi powder injection mixing device according to the first embodiment of the application.

[0018] Figure 2 It is a structural schematic view of a gas powder conveying structure of a novel Venturi powder injection mixing device according to the first embodiment of the application.

[0019] Figure 3 It is a structural schematic view of a novel Venturi powder injection mixing device according to the second embodiment of the application.

[0020] Figure 4 It is a structural schematic view of a novel Venturi powder injection mixing device according to the third embodiment of the application.

[0021] The reference signs: 1, air inlet pipe; 101, air inlet; 2, vacuum chamber; 3, gas flow nozzle; 4, gas material buffer chamber; 5, gas material mixing chamber; 6, negative pressure adsorption area; 7, feeding pipe; 8, powder bin; 9, gas powder conveying pipe; 10, equipment reactor; 11, gas material diffusion chamber; 12, outer sleeve pipe; 13, controllable flow feeding equipment; 14, air inlet pipe I; 15, expansion pipe; 16, distributor; 17, gas material contact chamber; 18, gas material buffer chamber I; 19, gas material mixing chamber I; 20, gas material diffusion chamber I. DETAILED DESCRIPTION

[0022] In order to make the content of the present application more easily understood, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings, and the words "inner" and "outer" refer to the directions towards or away from the geometric center of a specific component. Figure 1

[0023] In embodiment one, as Figure 1 and Figure 2 ​The utility model discloses a new type Venturi powder injection mixing device, including: at least one injection device, in order to satisfy a plurality of powder can be mixed according to certain proportion and form new powder, the number of injection device can be set according to production demand N >= 1, a plurality of injection devices are designed in parallel, each injection device includes air inlet pipe 1, outer sleeve 12 and feed pipe 7, air inlet pipe 1 is fixedly inserted in outer sleeve 12, outer sleeve 12 is the shape of Venturi pipe, the structure of existing Venturi pipe is all by inlet section, contraction section, throat section and diffusion section, the upper end of air inlet pipe 1 is arranged as air inlet 101, the lower end of air inlet pipe 1 is arranged as airflow nozzle 3, airflow nozzle 3 can spray high-speed gas, the inside upper end of outer sleeve 12 forms vacuum chamber 2, the lower side of vacuum chamber 2 is gas material buffer chamber 4, the lower side of gas material buffer chamber 4 is gas material mixing chamber 5, the lower side of gas material mixing chamber 5 is gas material diffusion chamber 11, specifically, vacuum chamber 2 is located at the inlet section and contraction section of outer sleeve 12, gas material buffer chamber 4 is located at the throat section of outer sleeve 12, gas material mixing chamber 5 and gas material diffusion chamber 11 are located at the diffusion section of outer sleeve 12, the outer side wall of outer sleeve 12 is connected with feed pipe 7, one end of feed pipe 7 is communicated with vacuum chamber 2, the other end of feed pipe 7 is communicated with powder bin 8, the position of feed pipe 7 in powder bin 8 is arranged as reverse closure cone structure, can realize that there is no excess material in powder bin 8, feed pipe 7 is inverted cone structure that the pipe diameter size is big on the top and small on the bottom, this design can make the powder that enters gas material buffer chamber 4 keep proper flow and flow rate, avoid the situation that powder is accumulated and blocked, the position of vacuum chamber 2 in feed pipe 7 is formed as negative pressure adsorption area 6, negative pressure adsorption area 6 is located at the contraction section of outer sleeve 12, negative pressure adsorption area 6 is used to powerless suction powder in powder bin 8, the outlet position of gas material diffusion chamber 11 in outer sleeve 12 is communicated with gas powder conveying pipe 9, the other end of gas powder conveying pipe 9 is communicated with equipment reactor 10, in addition, the end of airflow nozzle 3 is arranged towards gas material buffer chamber 4, high-speed gas is passed into through air inlet pipe 1, makes high-speed gas that airflow nozzle 3 sprays pass through the throat section gas material buffer chamber of outer sleeve 12, and then makes the inlet section and contraction section of outer sleeve 12 form negative pressure area as vacuum chamber 2 and produce suction force, because negative pressure adsorption area 6 is located in vacuum chamber 2, makes negative pressure adsorption area 6 produce suction force and powerless suction powder in powder bin 8 to gas material buffer chamber 4 through feed pipe 7, and is mixed fully in gas material mixing chamber 5, then diffuses to gas powder conveying pipe 9 through gas material diffusion chamber 11, and conveys powder to equipment reactor 10, gas powder conveying pipe 9 is elbow pipe structure, and powder can be mixed deeply in gas powder conveying pipe 9.

[0024] In the above structure, the Venturi tube shape of the outer sleeve 12 is designed to make the powder fully mixed during the injection process, thereby improving the product quality; and using the Venturi tube principle, the powder suction and transportation do not require additional power equipment, reducing energy consumption and emissions; in addition, the gas flow nozzle 3 sprays high-speed gas towards the gas material buffer chamber 4 direction, which can also avoid the accumulation of powder.

[0025] Working principle: high-speed gas is introduced through the gas inlet pipe 1, so that the gas flow nozzle 3 sprays high-speed gas through the throat section of the outer sleeve 12, thereby forming a negative pressure area for the inlet section and the contraction section of the outer sleeve 12. The vacuum chamber 2 generates suction, and the negative pressure adsorption area 6 is located in the vacuum chamber 2, so that the negative pressure adsorption area 6 generates suction to suction the powder in the powder bin 8 into the gas material buffer chamber 4 through the feed pipe 7 without power, and then fully mixed in the gas material mixing chamber 5, and then diffused into the gas-powder conveying pipe 9 through the gas-powder diffusion chamber 11. The gas-powder conveying pipe 9 with a curved pipe structure can make the powder mix and transport the powder to the equipment reactor 10.

[0026] In Example Two, as shown in Figure 3 compared with Example One, the difference is that the powder bin 8 is replaced by a controllable flow feeding device 13, the lower side of the controllable flow feeding device 13 is in communication with the feed pipe 7, the gas inlet pipe 1 and the outer sleeve 12 are adjusted to be transversely arranged, and the gas material buffer chamber 4 is extended to be a curved pipe in communication with the gas material mixing chamber 5; the controllable flow feeding device 13 can be selected from a screw conveyor, a star-type unloader, a flow control belt conveyor, an electromagnetic vibration feeder, a pipe chain conveyor or a flow control gravity feeder; in this design, the controllable flow feeding device can be used to quantitatively control the flow of the powder, so as to better mix the gas and the material.

[0027] In Example Three, as shown in Figure 4As shown, compared with the second embodiment, the difference lies in that the spraying device is replaced by a gas-material uniform mixing device, the gas-material uniform mixing device comprising a gas inlet pipe 14, an expansion pipe 15, a distributor 16, a gas-material contact chamber 17, a gas-material buffer chamber 18, a gas-material mixing chamber 19 and a gas-material diffusion chamber 20, a lower end of the gas inlet pipe 14 being provided as a gas inlet, an upper end of the gas inlet pipe being in communication connection with a lower narrow end of the expansion pipe 15, an upper flared end of the expansion pipe 15 being in communication connection with a lower side of the gas-material contact chamber 17, the distributor 16 being horizontally fixed between the expansion pipe 15 and the gas-material contact chamber 17, the distributor 16 being a disc structure with a plurality of through holes uniformly distributed on a surface thereof, an upper side of the gas-material contact chamber 17 being in communication connection with the feed pipe 7 at a lower side of the controllable flow feeding device 13, one side of the gas-material contact chamber 17 being in communication connection with one end of the gas-material buffer chamber 18, another end of the gas-material buffer chamber 18 being in communication connection with an upper end of the gas-material mixing chamber 19, a lower end of the gas-material mixing chamber 19 being in communication connection with the gas-material diffusion chamber 20, a lower end of the gas-material diffusion chamber 20 being in communication connection with the gas-powder conveying pipe 9; in this design, the nitrogen gas entering from the gas inlet pipe can be more uniformly mixed with the powder material after passing through the distributor.

[0028] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same. Although the present application is described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be replaced by equivalent ones, without departing from the spirit and scope of the present application defined by the claims.

Claims

1. A novel venturi powder injection mixing device characterized in that, The application relates to a powder feeding device, which comprises at least one jet device, each of which comprises an air inlet pipe (1), an outer sleeve pipe (12) and a feeding pipe (7), the air inlet pipe (1) is fixedly arranged in the outer sleeve pipe (12), the outer sleeve pipe (12) is in the shape of a Venturi tube, the upper end of the air inlet pipe (1) is provided with an air inlet (101), the lower end of the air inlet pipe (1) is provided with a gas flow nozzle (3), the gas flow nozzle (3) can spray high-speed gas, the upper end of the inner part of the outer sleeve pipe (12) is formed into a vacuum chamber (2), the vacuum chamber (2) is below a gas-powder buffer chamber (4), the gas-powder buffer chamber (4) is below a gas-powder mixing chamber (5), and the gas-powder mixing chamber (5) is below a gas-powder diffusion chamber (11). The outer side wall of the outer sleeve pipe (12) is connected with the feeding pipe (7), one end of the feeding pipe (7) is communicated with the vacuum chamber (2), the other end of the feeding pipe (7) is communicated with a powder bin (8), the vacuum chamber (2) is formed into a negative pressure adsorption area (6) at the position connected with the feeding pipe (7), and the negative pressure adsorption area (6) is used for power-free suction of powder in the powder bin (8). The vacuum chamber (2) is located at the inlet section and the contraction section of the outer sleeve pipe (12), the gas-powder buffer chamber (4) is located at the throat section of the outer sleeve pipe (12), and the gas-powder mixing chamber (5) and the gas-powder diffusion chamber (11) are located at the diffusion section of the outer sleeve pipe (12). The negative pressure adsorption area (6) is located at the contraction section of the outer sleeve pipe (12), and the end of the gas flow nozzle (3) is arranged towards the gas-powder buffer chamber (4).

2. A new type of Venturi powder injection mixing device according to claim 1, characterized in that, The feeding pipe (7) is in the structure of an inverted cone with the pipe diameter size being large at the top and small at the bottom.

3. A new type of Venturi powder injection mixing device according to claim 1, characterized in that, The position of the powder bin (8) connected with the feeding pipe (7) is provided with an inverse closing cone structure.

4. A new type of Venturi powder injection mixing device according to claim 1, characterized in that, The outer sleeve pipe (12) is communicated and connected with a gas-powder conveying pipe (9) at the outlet position of the gas-powder diffusion chamber (11), and the other end of the gas-powder conveying pipe (9) is communicated and connected with a device reactor (10).

5. A new type of Venturi powder injection mixing device according to claim 1, characterized in that, The gas-powder conveying pipe (9) is in the structure of a bent pipe.

6. A novel venturi powder injection mixing device as claimed in claim 5, wherein, The powder bin (8) is replaced by a controllable flow feeding device (13), the lower side of the controllable flow feeding device (13) is communicated and connected with the feeding pipe (7), the air inlet pipe (1) and the outer sleeve pipe (12) are arranged horizontally, and the gas-powder buffer chamber (4) is extended and arranged in the structure of a bent pipe and is communicated and connected with the gas-powder mixing chamber (5).

7. A new type of Venturi powder injection mixing device according to claim 6, characterized in that, The controllable flow feeding device (13) can be selected from a spiral conveyor, a star-shaped discharging machine, a flow control belt conveyor, an electromagnetic vibration feeder, a pipe chain conveyor or a flow control gravity feeder.

8. A new type of Venturi powder injection mixing device according to claim 7, characterized in that, ​ 9. A new type of Venturi powder injection mixing device according to claim 8, characterized in that, The spraying device is replaced by a gas-material uniform mixing device, which comprises a gas inlet pipe (14), an expansion pipe (15), a distributor (16), a gas-material contact chamber (17), a gas-material buffer chamber (18), a gas-material mixing chamber (19) and a gas-material diffusion chamber (20). The lower end of the gas inlet pipe (14) is provided as a gas inlet, the upper end of the gas inlet pipe is connected with the lower narrow end of the expansion pipe (15), the upper flared end of the expansion pipe (15) is connected with the lower side of the gas-material contact chamber (17), a distributor (16) is horizontally fixed between the expansion pipe (15) and the gas-material contact chamber (17), the distributor (16) is a disc structure with a plurality of through holes uniformly distributed on the surface, the upper side of the gas-material contact chamber (17) is connected with the feeding pipe (7) on the lower side of the controllable flow feeding device (13), one side of the gas-material contact chamber (17) is connected with one end of the gas-material buffer chamber (18), the other end of the gas-material buffer chamber (18) is connected with the upper end of the gas-material mixing chamber (19), the lower end of the gas-material mixing chamber (19) is connected with the gas-material diffusion chamber (20), and the lower end of the gas-material diffusion chamber (20) is connected with the gas-powder conveying pipe (9).

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