Passivator injection device for producing passivated lime powder

Abstract

The utility model relates to the technical field of passivated lime production, and particularly discloses a passivator blowing device for passivated lime powder production. Comprising an elephant trunk arranged between upper lime feeding equipment and lower lime grinding equipment, atomizing nozzles uniformly distributed on the periphery of the elephant trunk in the circumferential direction, a passivating agent supply assembly communicated with the atomizing nozzles and used for supplying a passivating agent to the atomizing nozzles, and a blanking assembly arranged at the top of the inner side of the elephant trunk and used for intermittently controlling lime blanking, the lime passivator injection device solves the problems that a traditional lime passivator injection device cannot control the falling amount of lime, and part of lime does not wrap a passivator or wraps too much passivator in the injection process.

Description

Technical Field

[0001] The present application relates to the technical field of passivated lime production, and specifically discloses a passivating agent spraying device for the production of passivated lime powder. Background Art

[0002] In the steel production process, in order to improve the performance of steel, a molten iron pretreatment step is applied in the pure steel production process. In the molten iron pretreatment step, the use of a desulfurizer is required. In the prior art, passivated lime is often used as a desulfurizer for molten iron pretreatment.

[0003] As for the production of passivated lime, a passivator adding device for passivated lime production, such as the Chinese patent authorization announcement number CN205223286U, includes a chute, an atomizing nozzle, a rubber hose, a metering pump, and a passivator containing cylinder. The chute is used as a lime discharge channel, and the atomizing nozzle is evenly distributed on the chute in the circumferential direction. The rubber hose is used to guide the passivator from the passivator containing cylinder to the atomizing nozzle for spraying, so that the passivator spray is sprayed during the lime discharge process to adhere to the lime surface.

[0004] However, in combination with the current status of lime passivator injection and the lime passivator injection mode provided in the above public documents, the passivator is injected during the free fall of the lime in the chute, and the passivator injection will continue as the lime continues to fall. However, since the falling speed of the lime and the falling amount per unit time are different each time, when the lime accumulates, some of the lime will not be entrained with the passivator or will be entrained with too much passivator.

[0005] Therefore, in view of this, the inventor provides a passivating agent spraying device for passivated lime powder production to solve the above-mentioned problems. Utility Model Content

[0006] The utility model aims to solve the problem that the traditional lime passivating agent spraying device cannot control the falling amount of lime and some lime does not carry the passivating agent or carries too much passivating agent during the spraying process.

[0007] In order to achieve the above-mentioned purpose, the basic scheme of the utility model provides a passivating agent spraying device for passivating lime powder production, including a chute arranged between an upper lime feeding device and a lower lime grinding device, atomizing nozzles uniformly distributed around the chute in the circumferential direction, and a passivating agent supplying component connected to the atomizing nozzles and used for supplying passivating agent to the atomizing nozzles, and also including a dropping component arranged at the top of the inner side of the chute for intermittently controlling the discharge of lime.

[0008] Furthermore, the blanking assembly includes a baffle fixedly connected to the top of the inner side of the chute and having a plurality of main blanking holes, a rotating structure rotatably connected to the baffle and used to control the opening and closing of the main blanking holes, and a driving structure arranged on one side of the chute and used to drive the rotating structure to rotate.

[0009] Furthermore, the rotating structure includes a rotating shaft that coaxially passes through the baffle and can rotate, a lever fixedly connected to the top of the rotating shaft, and a sealing plate fixedly connected to the bottom of the rotating shaft and driven to rotate by the driving structure. A closing portion that can simultaneously close all main blanking holes is formed on the sealing plate, and secondary blanking holes of the same size as the main blanking holes are opened on the sealing plate between the closing portions.

[0010] Furthermore, a transmission groove is opened on one side of the slide pipe, a circle of closed rack is fixedly connected to the outer wall of the sealing plate, and the driving structure includes a support platform fixedly connected to the outside of the slide pipe, a driving motor fixedly connected to the support platform, and a gear transmission mechanism arranged between the output shaft of the driving motor and the rack.

[0011] Furthermore, the passivator supply assembly includes a passivator container, a metering pump connected to the passivator container, a main liquid supply pipe connected to the metering pump, and auxiliary liquid supply pipes respectively connected between the main liquid supply pipe and the atomizing nozzle, and the connection between the liquid supply pipe and the atomizing nozzle is a threaded connection.

[0012] Furthermore, a heating section is provided on the outside of the atomizing nozzle.

[0013] The principle and effect of this scheme are:

[0014] 1. Compared with the prior art, the utility model uses a passivating agent supply assembly to supply the passivating agent to the atomizing nozzle, and the atomizing nozzle sprays the passivating agent to form a passivating agent spray into the chute, and the lime is supplied by the lime feeding equipment above the chute and enters the chute, and the lime contacts and entrains the passivating agent spray on the surface to realize the passivation of the lime, and the passivated lime directly falls into the lime grinding equipment below.

[0015] 2. Compared with the prior art, the utility model is provided with a dropping assembly for intermittently controlling the discharge of lime above the chute to prevent lime from piling up, and the chute below the dropping assembly forms a relatively independent dropping chamber, and the passivating agent spray sprayed by the atomizing nozzle is formed in the dropping chamber, waiting for the supply of lime, and part of the descending passivating agent spray will fall into the lime grinding equipment below, which will not cause waste of the passivating agent spray, and solves the problem that the traditional lime passivating agent spraying device cannot control the falling amount of lime, and some lime will not be entrained with the passivating agent or will be entrained with too much passivating agent during the spraying process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A cross-sectional view of a passivating agent spraying device for passivated lime powder production proposed in an embodiment of the present application is shown;

[0018] Figure 2 A schematic diagram showing a nozzle of a passivating agent spraying device for passivated lime powder production proposed in an embodiment of the present application is shown;

[0019] Figure 3 A top view of a passivating agent spraying device for passivated lime powder production proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0021] The reference numerals in the drawings of the specification include: slide pipe 1, nozzle safety sleeve 2, atomizing nozzle 3, auxiliary liquid supply pipe 4, lime feeding equipment 5, baffle 6, lever 7, rotating shaft 8, sealing plate 9, transmission shaft 10, and driving motor 11.

[0022] A passivating agent spraying device for passivating lime powder production, for example Figure 1 As shown:

[0023] It includes a chute 1 installed between an upper lime feeding device 5 and a lower lime grinding device, eight atomizing nozzles 3 circumferentially installed around the chute 1, a passivating agent supply assembly set up outside and used for supplying a passivating agent to the atomizing nozzles 3, and a dropping assembly installed on the top of the inner side of the chute 1 and used for intermittently controlling the discharge of lime.

[0024] The passivation agent supply assembly includes a passivation agent container, a metering pump connected to the passivation agent container through a pipeline, a main liquid supply pipe connected to the metering pump, a flow divider connected to the free end of the main liquid supply pipe, and a secondary liquid supply pipe 4 connected to the flow divider and respectively supplying the passivation agent to the atomizing nozzle 3. Among them, the passivation agent container, the metering pump, and the main liquid supply pipe are all commonly used equipment when the existing lime passivation agent spraying device is used. In this embodiment, no improvement of the above structure is involved and it is not shown in the drawings. The flow divider adopts a multi-head connecting pipe, which is respectively connected to the main liquid supply pipe and the secondary liquid supply pipe 4.

[0025] like Figure 2 As shown, the outer wall of the end of the auxiliary liquid supply pipe 4 is provided with an external thread, and the inner wall of the end of the atomizing nozzle 3 connected to the auxiliary liquid supply pipe 4 is provided with an internal thread meshing with the external thread, and the auxiliary liquid supply pipe 4 and the atomizing nozzle 3 are connected by threaded connection, which is convenient for disassembly and maintenance. A heating section is also provided in the middle section of the atomizing nozzle 3, and a heating copper tube is installed inside the heating section and is wound around the inner channel of the atomizing nozzle 3. The passivator at the nozzle at the right end of the internal atomizing nozzle 3 is appropriately heated by heating to increase the fluidity of the passivator.

[0026] Moreover, in this embodiment, a nozzle mounting sleeve is installed around the chute 1, and the end of the atomizing nozzle 3 with the nozzle is inserted into the nozzle mounting sleeve for fixation. Moreover, the nozzle of the atomizing nozzle 3 after installation is located at the inner end of the nozzle mounting sleeve and does not extend into the chute 1 to prevent lime powder from entering.

[0027] like Figure 1 and Figure 3 As shown, the blanking assembly includes a baffle 6 fixedly mounted on the top of the inner side of the chute 1 and having a plurality of main blanking holes circumferentially opened, a rotating structure rotatably mounted on the baffle 6 and used to control the opening and closing of the main blanking holes, and a driving structure mounted on one side of the chute 1 and used to drive the rotating structure to rotate. In this embodiment, the baffle 6 is circular.

[0028] The rotating structure includes a rotating shaft 8 coaxially penetrating the baffle 6 and being rotatable, a lever 7 coaxially fixedly mounted on the top of the rotating shaft 8, and a sealing plate 9 coaxially fixedly mounted on the bottom of the rotating shaft 8. The bottom surface of the lever 7 is attached to the top surface of the baffle 6, and the top surface of the sealing plate 9 is attached to the bottom surface of the baffle 6. The sealing plate 9 is formed with a closing portion that can close all the main blanking holes at the same time, and the sealing plate 9 between the closing portions is also provided with a secondary blanking hole of the same size as the main blanking hole.

[0029] A transmission groove is opened on the left side of the slide pipe 1, and a circle of closed racks is fixedly installed on the outer wall of the sealing plate 9. The driving structure includes a support platform fixedly installed on the left side of the slide pipe 1 by bolts, a driving motor 11 fixedly installed on the support platform, and a gear transmission mechanism installed between the output shaft of the driving motor 11 and the rack. The gear transmission mechanism includes a transmission platform fixedly installed on the outer wall of the slide pipe 1, a transmission shaft 10 rotatably installed on the transmission platform, a driving gear fixedly installed on the output shaft of the driving motor 11, and a transmission gear fixedly installed on the transmission shaft 10. The driving gear meshes with the transmission gear, and the transmission gear also meshes with the rack.

[0030] When the utility model is used, lime is supplied by the lime feeding device 5 above the chute 1 and enters above the baffle 6. In the initial state, the main drop hole on the baffle 6 is blocked by the closing part of the sealing plate 9;

[0031] After the lime falls onto the baffle 6, the metering pump continuously pumps out the passivating agent to the atomizing nozzle 3, and sprays it out after being slightly heated. The baffle 6 isolates the chute 1 below into a relatively independent blanking chamber, and after the passivating agent is sprayed out and the passivating agent spray is formed, the driving motor 11 is started, and the sealing plate 9 is driven to rotate through the gear transmission mechanism, so that the auxiliary blanking hole is aligned with the main blanking hole and the lime falls. After a certain period of time, the driving motor 11 is started again and the sealing part on the sealing plate 9 is controlled to block the main blanking hole;

[0032] During the falling process of lime, the lever 7 can assist in pushing the lime into the main drop hole and falling to the auxiliary drop hole. After the lime falls into the drop chamber, it will entrain the currently sprayed passivating agent spray and then fall into the lime grinding equipment below, without causing lime pile. In addition, the unentrained passivating agent spray will not only dissipate in the drop chamber waiting for the next lime drop, but will also fall into the lime grinding equipment below. The lime contacts and entrains the passivating agent spray on the surface to achieve the passivation of the lime. The passivated lime directly falls into the lime grinding equipment below, without causing waste of the passivating agent spray.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A passivating agent spraying device for passivating lime powder production, comprising a chute arranged between an upper lime feeding device and a lower lime grinding device, atomizing nozzles uniformly distributed around the chute, and a passivating agent supplying assembly connected to the atomizing nozzles and used for supplying a passivating agent to the atomizing nozzles, characterized in that: It also includes a material dropping component which is arranged on the top of the inner side of the chute and is used for intermittently controlling the discharge of lime.

2. A passivating agent spraying device for passivated lime powder production according to claim 1, characterized in that, The blanking assembly includes a baffle fixedly connected to the top of the inner side of the chute and having a plurality of main blanking holes, a rotating structure rotatably connected to the baffle and used to control the opening and closing of the main blanking holes, and a driving structure arranged on one side of the chute and used to drive the rotating structure to rotate.

3. A passivating agent spraying device for passivated lime powder production according to claim 2, characterized in that, The rotating structure includes a rotating shaft that coaxially passes through the baffle and can rotate, a lever fixed to the top of the rotating shaft, and a sealing plate fixed to the bottom of the rotating shaft and driven to rotate by the driving structure. A closing part that can simultaneously close all main blanking holes is formed on the sealing plate, and secondary blanking holes of the same size as the main blanking holes are opened on the sealing plate between the closing parts.

4. A passivating agent spraying device for passivated lime powder production according to claim 3, characterized in that, A transmission groove is opened on one side of the slide pipe, a circle of closed racks is fixedly connected to the outer wall of the sealing plate, and the driving structure includes a support platform fixedly connected to the outside of the slide pipe, a driving motor fixedly connected to the support platform, and a gear transmission mechanism arranged between the output shaft of the driving motor and the rack.

5. A passivating agent spraying device for passivated lime powder production according to claim 1, characterized in that, The passivator supply assembly includes a passivator container, a metering pump connected to the passivator container, a main liquid supply pipe connected to the metering pump, and auxiliary liquid supply pipes respectively connected between the main liquid supply pipe and the atomizing nozzle. The connection between the liquid supply pipe and the atomizing nozzle is a threaded connection.

6. A passivating agent spraying device for passivated lime powder production according to claim 1, characterized in that: A heating section is also arranged outside the atomizing nozzle.

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