CN217120592U

CN217120592U - Powder medicament injection apparatus

Info

Publication number: CN217120592U
Application number: CN202220442440.2U
Authority: CN
Inventors: 徐飞; 朱尹徽; 尹力
Original assignee: Hefei Zhongya Environmental Protection Technology Co ltd
Current assignee: Hefei Zhongya Environmental Protection Technology Co ltd
Priority date: 2022-03-01
Filing date: 2022-03-01
Publication date: 2022-08-05
Anticipated expiration: 2032-03-01

Abstract

The utility model discloses a powder medicament injection device, which comprises an injection pipeline, wherein the inlet end of the injection pipeline is respectively connected with a powder pipeline for conveying powder medicament and a compressed air pipeline for conveying compressed air; the upper peripheral side of the injection pipeline is wrapped with a heat insulation structure; a protective tube is sleeved on the outer side of the lower part of the injection pipeline; the outlet end of the injection pipeline is sequentially connected with an arc-shaped bent pipe and a horn-shaped nozzle, and the nozzle is installed at the air flow outlet area of the horn-shaped nozzle. The utility model can make the powder medicament delivered through the pipeline spray into the flue in a conical shape, increase the coverage area and fully mix with the flue gas under the action of the airflow; the utility model can regularly remove the medicament adhered on the inner wall of the pipeline by adding the compressed air pipeline; in addition, different types of spray heads are designed according to the characteristics of the medicament, so that the spray head is not limited to a single spray head and has wide application range; in addition, the outer side of the lower part of the injection pipeline is provided with a protection pipe, so that the corrosion and abrasion of the injection pipeline can be avoided, and the service life of the device is prolonged.

Description

Powder medicament injection apparatus

Technical Field

The utility model belongs to the technical field of industrial furnace waste gas treatment, concretely relates to powder medicament injection apparatus.

Background

At present, industrial furnace waste gas contains a large amount of harmful components such as acid gas and dioxin, and in order to remove the harmful components, powder agents (dry powder agents) such as slaked lime powder, sodium bicarbonate powder and activated carbon powder need to be sprayed into a furnace, a dust remover or a flue. The powder medicament is fully mixed with harmful components such as acid gas, dioxin and the like to generate reaction or adsorption, so that the powder medicament meets the pollutant emission standard specified by the state and is discharged into the atmosphere. Therefore, the powder agent injection device has a great effect in the flue gas purification system, and the mixing degree of the injected agent and the flue gas directly influences the separation efficiency of harmful components.

Currently, the related devices for ejecting powdered medicaments have the following problems: 1) most of the powder is directly concentrated on one point to be sprayed and is columnar, and the dry powder is not uniformly sprayed and dispersed. 2) The spraying effect is seriously influenced by the blockage of a spray head caused by moisture absorption of sprayed slaked lime powder, sodium bicarbonate powder, activated carbon powder and other medicaments. 3) The spray head has a single form, and corresponding diffusion angles are adjusted according to different cross-sectional diameters of spray points so as to prevent the spray from spraying to the inner wall of the flue; 4) the spray pipe has no protective layer, and when the spray pipe is worn and corroded, the spray effect is influenced; 5) the powder medicament adding port and the compressed air inlet share the same pipeline, so that the medicament adhered to the inner wall of the pipeline can be remained in the pipeline, and certain corrosion and blockage effects can be generated on the pipeline for a long time.

Disclosure of Invention

To the deficiency of the prior art, the utility model aims at providing a dry powder medicament injection apparatus.

In order to achieve the above object, the utility model adopts the following technical scheme:

a powder medicament injection device comprises an injection pipeline, wherein the inlet end of the injection pipeline is respectively connected with a powder pipeline for conveying powder medicament and a compressed air pipeline for conveying compressed air; the outer periphery of the upper part of the injection pipeline is wrapped with a heat insulation structure; a protective tube is sleeved on the outer side of the lower part of the injection pipeline; the outlet end of the injection pipeline is sequentially connected with an arc-shaped bent pipe and a horn-shaped nozzle, and a spray head is installed at the air flow outlet of the horn-shaped nozzle. Preferably, the trumpet-shaped nozzle is detachably connected with the arc-shaped bent pipe through a flange, so that the nozzle is convenient to replace. When powder medicament from loudspeaker form spout blowout and contact shower nozzle its motion trajectory can take place the skew, can follow the shower nozzle all around disperse to increase the diffusion range of powder medicament, increase its and flue gas pipeline in the area of contact of waste gas, improve the exhaust-gas treatment effect. Further, the heat insulation structure comprises a heat insulation cylinder sleeved on the periphery of the injection pipeline, and heat insulation cotton is filled in the heat insulation cylinder. The fixed plate is installed in the outside of a thermal-insulated section of thick bamboo, the top of fixed plate is connected with mounting flange, pass through fastening bolt and be connected between mounting flange and the fixed plate. The mounting flange is used for connecting the powder medicament injection device with the flue to play a role in fixing. A first pneumatic butterfly valve is arranged between the powder pipeline and the injection pipeline; and a second pneumatic butterfly valve is arranged between the compressed air pipeline and the injection pipeline.

According to a preferable technical scheme, the spray head is a conical spray head, the conical spray head is positioned right in front of the horn-shaped spray opening, and a conical vertex of the conical spray head is positioned in the center of the end face of the horn-shaped spray opening; the radius of a circle where the arc-shaped bent pipe is located is 2-3 times of the pipe diameter of the injection pipeline; the periphery of the conical spray head is fixedly provided with a plurality of fixed blocks, and the conical spray head is fixed right ahead of the horn-shaped spray nozzle through the fixed blocks. The nozzle with the structural design is suitable for spraying powder medicaments which are easy to absorb moisture and harden, such as slaked lime powder, sodium bicarbonate powder and the like, and the problems of blockage and the like are easy to cause when the powder medicaments absorb moisture and harden. Therefore, the conical spray head is arranged right ahead of the trumpet-shaped spray nozzle, so that the trumpet-shaped spray nozzle has larger air flow outlet area; simultaneously, the arc return bend has great turning radius in this structure, makes the air current resistance reduce, and the air current is comparatively smooth and easy when passing through, can avoid powder medicament to take place to block up in arc return bend department.

As a preferred technical scheme, the spray head is a shuttle-shaped spray head, and the cross-sectional area of the shuttle-shaped spray head is smaller than that of the trumpet-shaped spray opening; the shuttle-shaped nozzle is characterized in that a plurality of fixing blocks are fixed on the peripheral sides of the shuttle-shaped nozzle, and the shuttle-shaped nozzle is fixed in the middle of the cavity of the horn-shaped nozzle through the fixing blocks. The fusiform nozzle can guide the spraying direction of the powder medicament, so that the powder medicament can be better diffused in the flue gas pipeline. The nozzle with the structural design is suitable for powder medicaments which are not easy to absorb moisture and have stable properties.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a set up thermal-insulated structure at the upper portion periphery side of injection pipeline, have adiabatic effect, can prevent to avoid producing the injury to operating personnel because the injection pipeline high temperature that the flue gas high temperature arouses is too high.

(2) The utility model discloses a lower part at the injection pipeline sets up the protection tube, can prevent that dust and acid gas that concentration is big in the flue from to the wearing and tearing and the corruption of injection pipeline, extension fixture's life.

(3) The utility model provides a powder medicament injection apparatus increases the compressed air pipeline through the entry end at the injection pipeline, adds at the powder medicament and accomplishes the back, and accessible compressed air pipeline blows in compressed air in to the injection pipeline, can clear away the medicament of adhesion at spray tube pipeline inner wall.

(4) The powder medicament injection device provided by the utility model can use different forms of spray heads according to medicament characteristics, designs different diffusion angles according to different cross section diameters of injection points, and is not limited to a single spray head; so that the powder medicament conveyed by the spraying pipeline is sprayed into the flue in a conical shape, the coverage area is increased, and the powder medicament is fully mixed with the flue gas under the action of the airflow.

Drawings

Fig. 1 is a sectional view of a powder chemical injection device according to embodiment 1 of the present invention;

fig. 2 is a perspective view of a shuttle-shaped nozzle connection structure in the powder chemical injection apparatus provided in embodiment 1 of the present invention;

fig. 3 is a perspective view of a conical nozzle connecting structure in the powder chemical injection apparatus provided in embodiment 2 of the present invention;

reference numerals: the method comprises the following steps of 1-spraying a pipeline, 2-powder pipeline, 3-compressed air pipeline, 4-protecting pipe, 5-arc-shaped bent pipe, 6-horn-shaped nozzle, 7-heat insulation cylinder, 8-heat insulation cotton, 9-fixing plate, 10-mounting flange, 11-fastening bolt, 12-first pneumatic butterfly valve, 13-second pneumatic butterfly valve, 14-shuttle-shaped nozzle, 15-fixing block, 16-conical nozzle and 17-flange.

Detailed Description

The present invention will be further described with reference to the following examples and drawings so that those skilled in the art can better understand the present invention and can carry out the present invention, but the examples are not intended to limit the present invention.

In the present invention, "fixed", "connected" and "mounted" mean that two parts connected to each other are fixed to each other, and are generally fixed to each other by welding, screws, or gluing. It is to be understood that the terms "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the appended drawings to indicate orientations and positional relationships, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered limiting. In the present invention, the terms "first" and "second" do not denote any particular quantity or order, but are merely used to distinguish names. The specific meanings of the above description in the present invention can be understood by those skilled in the art according to specific situations.

Example 1

Referring to fig. 1 and 2, a powder agent spraying device includes a spraying pipe 1, and an inlet end of the spraying pipe 1 is connected with a powder pipe 2 for conveying powder agent and a compressed air pipe 3 for conveying compressed air, respectively; the upper peripheral side of the injection pipeline 1 is wrapped with a heat insulation structure; the outer side of the lower part of the injection pipeline is sleeved with a protection pipe 4; the outlet end of the injection pipeline 1 is sequentially connected with an arc-shaped bent pipe 5 and a horn-shaped nozzle 6, and a spray head is arranged at the airflow outlet of the horn-shaped nozzle 6. In order to change the spray head conveniently, the trumpet-shaped spray nozzle 6 is detachably connected with the arc-shaped bent pipe 5 through a flange 17. When powder medicament from loudspeaker form spout blowout and contact shower nozzle its motion trajectory can take place the skew, can follow the shower nozzle all around disperse to increase the diffusion range of powder medicament, increase its and flue gas pipeline in the area of contact of waste gas, improve the exhaust-gas treatment effect. Further, the heat insulation structure comprises a heat insulation cylinder 7 sleeved on the peripheral side of the injection pipeline, and heat insulation cotton 8 is filled in the heat insulation cylinder 7. The outer side of the heat insulation cylinder 7 is provided with a fixing plate 9, the top of the fixing plate 9 is connected with a mounting flange 10, and the mounting flange 10 is connected with the fixing plate 9 through a fastening bolt 11. The mounting flange is used for connecting the powder medicament injection device with the flue to play a role in fixing. A first pneumatic butterfly valve 12 is arranged between the powder pipeline 2 and the injection pipeline 1; a second pneumatic butterfly valve 13 is arranged between the connection of the compressed air pipeline 3 and the injection pipeline 1.

In the scheme of the embodiment, the spray head is a shuttle-shaped spray head 14, and the cross-sectional area of the shuttle-shaped spray head 14 is smaller than that of the trumpet-shaped spray opening 6; a plurality of fixing blocks 15 are fixed on the peripheral side of the shuttle-shaped nozzle 14, and the shuttle-shaped nozzle 14 is fixed in the middle of the cavity of the horn-shaped nozzle 6 through the fixing blocks 15. The shuttle-shaped spray head 14 can guide the spraying direction of the powder medicament, so that the powder medicament can be better diffused in the flue gas pipeline. The nozzle with the structural design is suitable for powder medicaments which are not easy to absorb moisture and have stable properties.

Example 2

Unlike embodiment 1, the structure of the showerhead and the design of the curved elbow are different in embodiment 2. Referring to fig. 3, the spray head in embodiment 2 is a conical spray head 16, the conical spray head 16 is positioned right in front of the trumpet-shaped nozzle 6, and the conical vertex of the conical spray head 16 is positioned in the center of the end surface of the trumpet-shaped nozzle; the radius of the circle where the arc-shaped bent pipe 5 is located is 2-3 times of the pipe diameter of the injection pipeline 1; a plurality of fixing blocks 15 are fixed on the peripheral side of the conical spray head 16, and the conical spray head 16 is fixed right in front of the horn-shaped spray opening 6 through the fixing blocks 15. The nozzle with the structural design is suitable for spraying powder medicaments which are easy to absorb moisture and harden, such as slaked lime powder, sodium bicarbonate powder and the like, and the problems of blockage and the like are easy to cause when the powder medicaments absorb moisture and harden. Therefore, in the embodiment, the conical spray head is arranged right ahead of the trumpet-shaped spray opening, so that the trumpet-shaped spray opening has larger airflow outlet area; simultaneously, the arc return bend has great turning radius in this structure, makes the air current resistance reduce, and the air current is comparatively smooth and easy when passing through, can avoid powder medicament to take place to block up in arc return bend department.

The method for treating the flue gas by using the powder agent injection device provided by the utility model is as follows:

this powder medicament injection apparatus is installed to the department at flue injection point, opens first pneumatic butterfly valve 12, and the powder medicament is carried in proper order through injection pipeline 1, arc return bend 5, loudspeaker form spout 6, shower nozzle through the air-blower and is got into the flue after-diffusion, guarantees that the medicament of covering surface can fully mix with the flue gas, gets rid of harmful components such as acid gas, dioxin. When the regular purging is performed, the first pneumatic butterfly valve 12 is closed, the second pneumatic butterfly valve 13 is opened, compressed air (0.6Mpa) flows through the injection pipeline through the compressed air pipeline and flows into the spray head, and the agent adhered to the inner wall of the injection pipeline can be sprayed into the flue, so that the blockage of the injection device is avoided.

It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Claims

1. The utility model provides a powder medicament injection apparatus, includes the injection pipeline, its characterized in that: the inlet end of the injection pipeline is respectively connected with a powder pipeline for conveying powder medicament and a compressed air pipeline for conveying compressed air; the outer periphery of the upper part of the injection pipeline is wrapped with a heat insulation structure; a protective tube is sleeved on the outer side of the lower part of the injection pipeline; the outlet end of the injection pipeline is sequentially connected with an arc-shaped bent pipe and a horn-shaped nozzle, and a spray head is installed at the air flow outlet of the horn-shaped nozzle.

2. The powder chemical injection apparatus according to claim 1, wherein: the spray head is a conical spray head, the conical spray head is positioned right in front of the horn-shaped spray nozzle, and the conical vertex of the conical spray head is positioned in the center of the end face of the horn-shaped spray nozzle; the radius of a circle where the arc-shaped bent pipe is located is 2-3 times of the pipe diameter of the injection pipeline; the periphery of the conical spray head is fixedly provided with a plurality of fixed blocks, and the conical spray head is fixed right ahead of the horn-shaped spray nozzle through the fixed blocks.

3. The powder chemical injection apparatus according to claim 1, wherein: the nozzle is a fusiform nozzle, and the cross-sectional area of the fusiform nozzle is smaller than that of the trumpet-shaped nozzle; the shuttle-shaped nozzle is characterized in that a plurality of fixing blocks are fixed on the peripheral sides of the shuttle-shaped nozzle, and the shuttle-shaped nozzle is fixed in the middle of the cavity of the horn-shaped nozzle through the fixing blocks.

4. The powder agent spraying apparatus according to claim 2 or 3, wherein: the horn-shaped nozzle is detachably connected with the arc-shaped bent pipe through a flange.

5. The powder agent spraying apparatus according to any one of claims 1 to 3, wherein: the heat insulation structure comprises a heat insulation cylinder sleeved on the periphery of the injection pipeline, and heat insulation cotton is filled in the heat insulation cylinder.

6. The powder chemical injection apparatus according to claim 5, wherein: the fixed plate is installed in the outside of a thermal-insulated section of thick bamboo, the top of fixed plate is connected with mounting flange, pass through fastening bolt and be connected between mounting flange and the fixed plate.

7. The powder chemical injection apparatus according to claim 6, wherein: a first pneumatic butterfly valve is arranged between the powder pipeline and the injection pipeline; and a second pneumatic butterfly valve is arranged between the compressed air pipeline and the injection pipeline.