CN211887363U - Baking soda grinder for dry desulfurization - Google Patents

Abstract

The utility model discloses a baking soda grinder for dry desulphurization, which belongs to the field of dry desulphurization, and comprises a frame body, a blanking hopper, a grinder body and a conveying fan, wherein the blanking hopper, the grinder body and the conveying fan are arranged on the frame body; the upper part of the shell is connected with the feed opening, the lower part of the shell is connected with the feed pipe, the feeding motor is fixedly arranged on the outer wall of the shell, two ends of the feeding roller are respectively and rotatably connected to two opposite inner walls of the shell, and the end surface and the circumferential side wall of the feeding roller are in clearance fit with the inner walls of the shell; a plurality of circumferentially and uniformly distributed blanking grooves are formed in the circumferential side wall of the blanking roller; the output shaft of the blanking motor is mechanically connected with the blanking roller. The utility model has the advantages of simple structure and reasonable design, control unloading volume and unloading speed that can be convenient and quick.

Description

Baking soda grinder for dry desulfurization

Technical Field

The utility model relates to a dry process desulfurization field, in particular to baking soda grinder for dry process desulfurization.

Background

Dry desulfurization, also known as dry flue gas desulfurization, refers to the use of powdery or granular absorbents, adsorbents, or catalysts to remove sulfide-containing gases from flue gases. Usually, a sodium-based desulfurizer is adopted for in-tower desulfurization, and the reaction product is solid dust after absorbing sulfur dioxide due to strong alkalinity of the sodium-based desulfurizer, so that the problem of scaling and blockage is avoided, and in addition, the desulfurization product is collected outside the tower in a centralized manner, so that the desulfurization product is more convenient to store and transport outside.

In the prior art, sodium bicarbonate (baking soda) particles are generally used as a desulfurizing agent, and sodium sulfate, water and carbon dioxide are generated after the sodium bicarbonate particles react with sulfur dioxide. The baking soda raw material is usually in the form of large blocks, and needs to be ground by a grinding device and sprayed into the reactor in the form of powder.

At present, the grinding device comprises a hopper, a grinder body and a fan, wherein the fan sucks the baking soda material in the hopper into the grinder body for grinding in a negative pressure suction mode, and after the baking soda material is ground by the grinder body, baking soda powder with the granularity meeting the specification is sucked out of the grinder body under the negative pressure suction of the fan, and then is sent to the next process flow.

However, in the conventional grinding apparatus, the amount and speed of the baking soda material in the hopper are difficult to control, and excessive and insufficient baking is likely to occur, and specifically, when the baking soda material in the grinder body is excessive, the suction effect of the fan on the baking soda powder in the grinder body is reduced, and when the baking soda material in the grinder body is insufficient, the grinding efficiency is affected.

SUMMERY OF THE UTILITY MODEL

The hopper unloading volume and the unloading speed to baking soda grinder that prior art exists are difficult to the control problem, the utility model aims at providing a baking soda grinder for dry process desulfurization.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the baking soda grinding device for dry desulfurization comprises a frame body, a blanking hopper, a grinding machine body and a conveying fan, wherein the blanking hopper, the grinding machine body and the conveying fan are mounted on the frame body, a blanking port is formed in the bottom of the blanking hopper and is connected with a feeding port of the grinding machine body through a feeding pipe, a discharging port of the grinding machine body is connected with a suction end of the conveying fan through a suction pipe, and the blanking device comprises a shell, a blanking motor and a blanking roller; the upper part of the shell is connected with the feed opening, the lower part of the shell is connected with the feed pipe, the feeding motor is fixedly arranged on the outer wall of the shell, two ends of the feeding roller are respectively and rotatably connected to two opposite inner walls of the shell, and the end surface and the circumferential side wall of the feeding roller are in clearance fit with the inner walls of the shell; a plurality of circumferentially and uniformly distributed blanking grooves are formed in the circumferential side wall of the blanking roller; and the output shaft of the blanking motor is mechanically connected with the blanking roller.

As right the utility model discloses a further inject, the unloading recess is rectangular form and follows the axial direction setting of unloading roller.

As right to the utility model discloses a further injectd, the cross section of unloading recess is semicircular in shape.

As right the utility model discloses a it is further injectd, the coaxial shaft hole that is provided with in the unloading roller, wear to be equipped with the pivot in the shaft hole, the pivot pass through the bearing with the casing rotates to be connected.

As right the utility model discloses a further inject, the unloading motor is inverter motor.

Adopt above-mentioned technical scheme, because the casing among the unloader, rotate connect and with casing clearance fit's unloading roller, the setting of the unloading recess on the unloading roller circumference lateral wall, make under the drive of unloading motor, when the unloading roller rotates with certain rotational speed, it all takes out quantitative baking soda raw materials in the casing from every rotation round, consequently under the fixed rotational speed of unloading motor, the unloading volume and the unloading speed of unloading hopper can be fixed, thereby guarantee that the internal too much or too little baking soda raw materials can not appear in the grinding miller.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

fig. 2 is a partially enlarged view of a portion a in fig. 1.

In the figure, 1-blanking hopper, 2-grinder body, 3-conveying fan, 4-feeding pipe, 5-suction pipe, 6-blanking device, 61-shell, 62-blanking motor, 63-blanking roller and 64-blanking groove.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "front", "back", etc. indicate the orientation or position relationship of the structure of the present invention based on the drawings, and are only for the convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the technical scheme, the terms "first" and "second" are only used for referring to the same or similar structures or corresponding structures with similar functions, and are not used for ranking the importance of the structures, or comparing the sizes or other meanings.

In addition, unless expressly stated or limited otherwise, the terms "mounted" and "connected" are to be construed broadly, e.g., the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; the two structures can be directly connected or indirectly connected through an intermediate medium, and the two structures can be communicated with each other. To those skilled in the art, the specific meanings of the above terms in the present invention can be understood in relation to the present scheme in specific terms according to the general idea of the present invention.

As shown in fig. 1, a baking soda grinding apparatus for dry desulfurization includes a frame body, and a hopper 1, a grinder body 2, and a conveyor fan 3 mounted on the frame body, wherein the hopper 1 is open at the top and bottom and has a row shape with a large upper dimension and a small lower dimension, such as a quadrangular pyramid shape or a cone shape.

The open bottom of hopper 3 is the feed opening promptly down, and this feed opening passes through conveying pipe 4 to be connected with the pan feeding mouth of grinding machine body 2, and the discharge gate of grinding machine body 2 passes through the suction tube 5 to be connected with conveying fan 3's end of breathing in simultaneously, and conveying fan 3's the end of giving vent to anger is direct to be connected with the reactor usually, also can connect cyclone collector or dust collector and be used for collecting powdered baking soda certainly. In this embodiment, the conveying fan 3 is a centrifugal fan, which axially feeds air and radially discharges air.

In this embodiment, as shown in fig. 2, the blanking device 6 further includes a blanking device 6, and the blanking device 6 specifically includes a housing 61, a blanking motor 62 and a blanking roller 63, wherein the housing 61 is rectangular, an upper portion of the housing 61 is connected to a blanking port of the blanking hopper 1 through a bolt, and a lower portion of the housing 61 is also connected to the feeding pipe 4 through a bolt, for example, in this embodiment, the housing 61 is connected to the blanking hopper 1 and the feeding pipe 4 through a flange for connection.

The blanking motor 62 is a variable frequency motor, the blanking motor 62 is fixedly mounted on the outer wall of the shell 61 through bolts, the blanking roller 63 is located in the shell 61, two ends of the blanking roller 63 are respectively rotatably connected to two opposite inner walls of the shell 61, and two end faces and circumferential side walls of the blanking roller 63 are in clearance fit with the inner wall of the shell 61. A plurality of circumferentially and uniformly distributed blanking grooves 64 for blanking are formed in the circumferential side wall of the blanking roller 63, and the output shaft of the blanking motor 62 is mechanically connected with the blanking roller 63.

In this embodiment, the axle hole that unloading roller 63 center was provided with and unloading roller 63 coaxial line wears to be equipped with the pivot in this axle hole, and the pivot passes through the key and can dismantle with unloading roller 3 and be connected, all installs the bearing on the both ends of the outstanding unloading roller 63 of this pivot, offers the dead eye with this bearing looks adaptation on the inner wall of casing 61 simultaneously, and the bearing both sides seal through the bearing gland, and this bearing gland passes through the fix with screw on casing 61.

In this embodiment, the blanking grooves 64 are formed in a long strip shape and are arranged along the axial direction of the blanking roller 63, and further, the cross section of each blanking groove 64 is semicircular.

When in use, the rotating speed of the blanking motor 62 is set according to the power of the conveying fan 3 and the negative pressure attraction force which can be generated by the conveying fan, and the rotating speed is set to achieve the purpose of controlling the rotating speed of the blanking roller 63 and further controlling the blanking amount and the blanking speed; after the baking soda is fed under the rotation action of the feeding roller 63, the baking soda enters the grinder body 2, the grinder body 2 grinds baking soda with larger particles, and then baking soda powder with the specified size is sucked into the conveying fan 3 under the suction action of the conveying fan 3 and conveyed to the reaction tower by the conveying fan 3 for dry desulfurization.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims (5)

1. The utility model provides a baking soda grinder for dry desulfurization, includes the support body and installs hopper, grinding machine body and conveying fan down on the support body, the bottom of hopper is provided with the feed opening down, the feed opening pass through the conveying pipe with the pan feeding mouth of grinding machine body is connected, the discharge gate of grinding machine body pass through the suction tube with conveying fan's the end of breathing in is connected its characterized in that: the blanking device comprises a shell, a blanking motor and a blanking roller; the upper part of the shell is connected with the feed opening, the lower part of the shell is connected with the feed pipe, the feeding motor is fixedly arranged on the outer wall of the shell, two ends of the feeding roller are respectively and rotatably connected to two opposite inner walls of the shell, and the end surface and the circumferential side wall of the feeding roller are in clearance fit with the inner walls of the shell; a plurality of circumferentially and uniformly distributed blanking grooves are formed in the circumferential side wall of the blanking roller; and the output shaft of the blanking motor is mechanically connected with the blanking roller.

2. The baking soda milling apparatus for dry desulfurization according to claim 1, characterized in that: the blanking groove is in a long strip shape and is arranged along the axial direction of the blanking roller.

3. The baking soda milling apparatus for dry desulfurization according to claim 2, characterized in that: the cross section of the blanking groove is semicircular.

4. The baking soda milling apparatus for dry desulfurization according to claim 1, characterized in that: the feeding roller is internally and coaxially provided with a shaft hole, a rotating shaft is arranged in the shaft hole in a penetrating mode, and the rotating shaft is connected with the shell in a rotating mode through a bearing.

5. The baking soda milling apparatus for dry desulfurization according to claim 1, characterized in that: the blanking motor is a variable frequency motor.

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