阅读说明：本技术 除尘干燥机 (Dust-removing drier ) 是由 孙兆磊 王守仁 张明远 王高琦 温道胜 朱国栋 郭宇 肖滕 李金坤 时晓宇 于 2020-05-29 设计创作，主要内容包括：本发明公开了一种除尘干燥机,包括：干燥仓,一端具有进料口,另一端具有出料口,上侧开有除尘口；输送机构,安装在干燥仓内,用于将物料自进料口转运到出料口；空气加热器,导入并加热空气；送风装置,桥接空气加热器与干燥仓的一端,以将空气加热器加热后的空气送入干燥仓；除尘装置,以引风的方式对接除尘口。依据本发明的除尘干燥机除尘干燥效率比较高。(The invention discloses a dust removal dryer, comprising: one end of the drying bin is provided with a feeding hole, the other end of the drying bin is provided with a discharging hole, and the upper side of the drying bin is provided with a dust removing hole; the conveying mechanism is arranged in the drying bin and is used for transferring the materials from the feeding hole to the discharging hole; an air heater for introducing and heating air; the air supply device is bridged with the air heater and one end of the drying bin so as to send the air heated by the air heater into the drying bin; the dust removal device is in butt joint with the dust removal port in an induced air mode. The dedusting dryer has higher dedusting and drying efficiency.)

1. A dust removal dryer characterized by comprising:

the drying bin is of a horizontal structure, one end of the drying bin is provided with a feeding hole, the other end of the drying bin is provided with a discharging hole, and the upper side of the drying bin is provided with a dust removing hole;

the conveying mechanism is arranged in the drying bin and is used for transferring the materials from the feeding hole to the discharging hole;

an air heater for introducing and heating air;

the air supply device is bridged with the air heater and one end of the drying bin so as to send the air heated by the air heater into the drying bin;

the dust removal device is in butt joint with the dust removal port in an induced air mode.

2. The dust removing dryer as claimed in claim 1, wherein the drying compartment is divided into an upper material sub-compartment and a lower air homogenizing sub-compartment by a transverse partition;

correspondingly, vent holes for ventilating from the gas homogenizing sub-bin to the material sub-bin are uniformly distributed on the transverse partition plate;

the conveying mechanism is supported at two ends of the transverse partition plate in the feeding and discharging direction.

3. A dust extraction dryer as claimed in claim 1 or 2, wherein the conveyor means is a chain bed conveyor.

4. The dust removing dryer as claimed in claim 3, wherein the chain bed of the chain bed conveyor is provided with round-headed needle bed supports in an array.

5. The dust removal dryer of claim 3, wherein the drive member of the chain bed conveyor is located outside the drying bin;

correspondingly, a through hole is formed in the position, aligned with one end of a chain wheel shaft of a driving chain wheel of the chain bed conveyor, of the drying bin, and the chain wheel shaft penetrates through the through hole to be connected with the driving part.

6. The dust extraction dryer of claim 1, wherein the conveyor is a horizontal conveyor.

7. The dust removing dryer according to claim 1, wherein the dust removing port has a plurality;

and the dust removal ports are connected through a connecting pipe, and the connecting pipe is connected with the dust removal device.

8. The dust-removing dryer as claimed in claim 7, wherein the dust-removing opening is a wide opening, and a gas-collecting cover with a larger bottom and a smaller top is arranged at the wide opening for closing.

9. The dust removing dryer as claimed in claim 7, wherein the end of the header connected to the dust removing device is provided with a flow control valve.

10. The dust removing dryer according to claim 1, wherein the dust removing device includes a cyclone dust collector at a front stage and a bag dust collector at a rear stage.

Technical Field

The invention relates to a dust removal dryer.

Background

In a machined workpiece, dirt such as oil stain and dust is left on the surface, and cooling is often required due to machining, so that moisture is usually left on the surface of the workpiece, and galvanic cells are formed on the surface of the workpiece due to the combination of the dirt and the moisture, so that corrosion of the workpiece can be accelerated.

In some implementations, the air knife is used in combination with electrostatic dust removal to remove dirt and water remaining on the surface of the workpiece, and the air knife is a device capable of generating a sheet-bundle-shaped airflow, and particularly, a plurality of slits are formed in one box body, and the sheet-bundle-shaped airflow is formed when compressed air is sprayed out of the box body. The compressed gas has a set temperature, and the air knife evaporates the temperature of the workpiece surface and blows away dirt while blowing against the workpiece surface at a relatively high temperature. Then the airflow on the side of the workpiece contains dust and water vapor, and then the electrostatic dust removal device is used for removing the dust in the airflow. However, electrostatic precipitation is incompatible with water vapor, and such a dust removal apparatus is suitable for applications in which the surface of the workpiece is completely dry. In fact, after the workpiece is naturally placed for a period of time after being processed, most of the moisture on the surface of the workpiece is naturally evaporated, but the moisture remained on the supported surface where the workpiece is placed and the moisture combined with dust and the like to form hydrate is hardly naturally evaporated in a short time, so that the efficiency is low, and adverse effects can be caused on subsequent electrostatic dust removal.

In other implementations, a dry dust chamber, generally referred to as a dust chamber body, is directly constructed, a plurality of heating devices are disposed on an inner surface of the dust chamber body, and an intake assembly and an exhaust assembly are disposed on two vertical panels opposite to the dust chamber body. The dust removal mode belongs to static dust removal, a workpiece is placed in a dust removal box, and after drying and dust removal are finished, the workpiece is taken out, so that the drying and dust removal mode cannot realize continuous production, and the efficiency is low.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a dust removal dryer with relatively high dust removal drying efficiency.

In an embodiment of the present invention, there is provided a dust removal dryer including:

the drying bin is of a horizontal structure, one end of the drying bin is provided with a feeding hole, the other end of the drying bin is provided with a discharging hole, and the upper side of the drying bin is provided with a dust removing hole;

the conveying mechanism is arranged in the drying bin and is used for transferring the materials from the feeding hole to the discharging hole;

an air heater for introducing and heating air;

the air supply device is bridged with the air heater and one end of the drying bin so as to send the air heated by the air heater into the drying bin;

the dust removal device is in butt joint with the dust removal port in an induced air mode.

Optionally, the drying bin is divided into an upper material sub-bin and a lower gas homogenizing sub-bin by a transverse partition plate;

correspondingly, vent holes for ventilating from the gas homogenizing sub-bin to the material sub-bin are uniformly distributed on the transverse partition plate;

the conveying mechanism is supported at two ends of the transverse partition plate in the feeding and discharging direction.

Optionally, the conveying mechanism is a chain bed conveyor.

Optionally, the chain bed of the chain bed conveyor is provided with round-head needle table supports in an array mode.

Optionally, the drive component of the chain bed conveyor is located outside the drying bin;

correspondingly, a through hole is formed in the position, aligned with one end of a chain wheel shaft of a driving chain wheel of the chain bed conveyor, of the drying bin, and the chain wheel shaft penetrates through the through hole to be connected with the driving part.

Optionally, the conveying mechanism is a horizontal conveying mechanism.

Optionally, the dust removing port has a plurality;

and the dust removal ports are connected through a connecting pipe, and the connecting pipe is connected with the dust removal device.

Optionally, the dust removing opening is a wide opening, and a gas collecting cover with a large lower part and a small upper part for closing is arranged at the wide opening.

Optionally, a flow control valve is arranged at one end of the header connected with the dust removing device.

Optionally, the dust removing device comprises a cyclone dust remover at a front stage and a bag dust remover at a rear stage.

In the embodiment of the invention, a horizontal drying bin is constructed, and a conveying mechanism is arranged in the drying bin and used for conveying materials fed from a feeding hole at one end of the drying bin to a discharging hole at the other end of the drying bin. Use hot-air to carry out the drying at the material transportation in-process, the produced steam of drying and dust are discharged from the dust removal mouth that is located dry storehouse upside, handle through dust collector, and the atmosphere is discharged to the waste gas after the processing. In the process, the conveying mechanism runs continuously, so that the continuity of drying and dust removal can be ensured, and the drying and dust removal efficiency is high.

Drawings

Fig. 1 is a schematic front view of a dust removal dryer in an embodiment (the dryer is hidden).

Fig. 2 is a schematic top view of the dust removing dryer in one embodiment (the dust removing portion is omitted to avoid shielding).

In the figure, 1, a feed hopper, 2, a drying bin, 3, a gas collecting cover, 4, a header pipe, 5, a reducer union, 6, a flow control valve, 7, a dust remover, 8, a communicating pipe, 9, a tail gas pipeline, 10, an induced draft fan, 11, an auger, 12, a discharge hopper, 13, a supporting plate, 14, a chain bed, 15, a chain wheel, 16, a chain wheel seat, 17, a triangular box, 18, a blower, 19, a motor, 21, an induced draft pipe and 22, an air heater.

Detailed Description

For example, the air knife is limited by the single air outlet direction, the actual cleaning effect is represented by single-side cleaning of the side where the air knife is located, therefore, the actual effect of cleaning the surface by using the wind force of the air knife is not significant for workpieces, and therefore, in the embodiment of the invention, relatively mild heating is performed by means of heated air.

For the sake of convenience of distinction, the air before being heated is referred to as cold air and the air after being heated is referred to as hot air based on the relative concept.

For the drying chamber 2, the rest parts except the set interface should be in a relatively good sealing state.

Furthermore, it will be appreciated that the drying chamber 2 is required to have a relatively high stiffness, and therefore it may be made of sheet metal as a whole, particularly where the drying chamber 2 is to be loaded, such as the support plate 13 in fig. 1, which may be made of steel. In order to reduce heat loss, the sheet metal part is wrapped with a heat insulation material to form a heat insulation layer, the heat insulation material can be asbestos or rock wool or other heat insulation boards for external wall heat insulation, such as traditional polyurethane boards, polystyrene boards, novel GPES boards and the like, and a foaming process can be adopted to manufacture a foaming heat insulation layer.

As can be seen from the dust extraction dryer in fig. 1, the drying chamber 2 is illustrated in the figure as a horizontal structure, it being understood that the horizontal structure is not necessarily illustrated as horizontal, and horizontal is used to distinguish from vertical, and the rest of the states between vertical and horizontal can also be classified as horizontal or vertical, respectively.

In fig. 1, a drying bin 2 is provided with a feed inlet at the left end, the feed inlet being adapted with a feed hopper 1; the right-hand member in dry storehouse is equipped with the discharge gate, and the adaptation has discharge hopper 12.

Wherein, the feed hopper 1 can be provided with an air-lock valve.

Further, it can be understood that, since the dust removing device has an induced air function, the hot air is discharged from the dust removing port provided at the upper side of the drying compartment 2 based on the suction force generated by the induced air.

In some applications, for example, a sliding plate with a certain inclination angle may be used for conveying materials by gravity, but the structure has a relatively short service life, on one hand, the sliding plate is easy to wear, especially, materials entering a feed inlet often have a certain speed, and the sliding plate is hard and very easy to crack metal workpieces.

Therefore, in the embodiment of the invention, the material is conveyed by using a special conveying mechanism, similar to a circulation device on a production line, and the conveying mechanism conveys the material from a feeding hole to a discharging hole.

Accordingly, the conveying mechanism necessarily needs to be installed in the drying compartment 1.

The air heater 22 is configured, as shown in fig. 2, and the air heater 22 belongs to a relatively mature gas heating apparatus, and generally uses an electric heating element. The air heater 22 has a duct, which is typically a stainless steel tube, and an electric heating wire is wound around the stainless steel tube to heat the duct, so that the air is heated when passing through the duct.

The heated air can be used for evaporating moisture on the workpiece and carrying away part of dust.

It will be appreciated that the air heater 22 is used in a wide range and that the present air heater 22 can heat air up to 450 degrees celsius. Generally, the air heater 22 is also provided with a temperature adjusting device, which can adjust the temperature of the output hot air according to the working condition, and at least from the applicable range, the air heater 22 can be used for a dust removing dryer which performs drying based on the hot air.

Generally, the air heater 22 is provided with an air supply device to supply heated hot air, and in the embodiment of the present invention, a separate air supply device is provided, and the air supply device and the air heater 22 can form an assembly, or the air supply device forms a component of the air heater 22.

The air supply device is used for bridging the air heater 22 and the drying chamber 2, and as can be seen in the figure, the end of the drying chamber 2 used for bridging is the left end in fig. 2.

In some embodiments, one end of the drying bin 2 for bridging is the right end, and the flow direction of the hot air is opposite to the trend of the materials, so that the drying of the workpiece is facilitated.

And a dust removing device is further arranged and is in butt joint with the dust removing port in an induced air mode, for example, the waste gas is rapidly discharged.

The dust removal port is arranged at the upper side of the drying bin 2, the specific gravity of the hot air is relatively small, after the hot air enters the drying bin 2, under the condition that the air supply pressure is gradually released, the hot air is naturally generated, the workpiece is dried, the temperature of the hot air is reduced, and the hot air is discharged from the dust removal port.

If not controlled, the distribution of the hot air fed by, for example, the blower 18 in the drying compartment 2 is relatively concentrated and the dispersion is not good. In the preferred embodiment, a transverse partition is provided in the transverse direction of the drying chamber 2, which transverse partition is shown as a supporting plate 13 in fig. 1, the supporting plate 13 divides the drying chamber 2 into an upper part and a lower part, the upper part is referred to as a material sub-chamber, and the lower part is referred to as an air-distributing sub-chamber.

Correspondingly, the part of the drying chamber 2 communicated with the air supply device is the uniform air distribution chamber, and further, the transverse partition plate, namely the supporting plate 13 in fig. 1, is uniformly distributed with vent holes for ventilating the material distribution chamber from the uniform air distribution chamber.

The vent holes have a flow resistance and the blade 13 physically blocks the airflow to create a reverse flow, thereby spreading the airflow pumped by the blower 18 and covering a larger area.

With respect to pipe pumping, usually coupled with round pipes, and the chain beds often have a certain width, in the configuration shown in fig. 2 the blower 18 is connected to the air distribution chamber of the drying chamber 2 through a triangular box 17. The triangular box 17 is originally a pipe connecting part in cotton industry machinery, can disperse cotton conveyed by a pipeline with a circular cross section through the triangular box 17, is equivalent to change a circular pipe into a flat pipeline, and is only represented as a triangular box 17 structure in terms of mechanical structure. In the embodiment of the present invention, referring to fig. 2 of the specification, the triangular box 17 has a trapezoidal structure in a plan view, a small end is connected to the blower 18, and a large end is connected to the drying compartment 2, so that the hot air can be dispersed in the vertical direction in the drawing.

The conveying mechanism is preferably based on a chain bed conveyor, and the chain bed of the chain bed conveyor has large gaps, so that hot air can penetrate through the chain bed and rise upwards, and the supported surface of the workpiece can be dried.

Likewise, if other types of transport mechanisms are used, the components for transport may also be perforated on their carrying surfaces. For example, the conveyor belt may be perforated to form a mesh-like structure, which facilitates the upward transfer of hot air through the conveyor belt and directly onto the lower surface of the workpiece.

It is obvious that the conveying mechanisms are supported at both ends of the transverse partition in the feeding and discharging direction, so that the conveying mechanisms in the feeding and discharging direction of the drying chamber 2 can be constructed.

In order to further reduce the shielding of the workpiece when being supported, round-head needle table supports are arrayed on a chain bed of the chain bed conveyor.

For example, the motor often requires heat dissipation, and obviously, the temperature in the drying chamber 2 is high, which is not favorable for heat dissipation, so that a driving component for driving the chain bed conveyor, such as the motor or the motor reducer assembly, is preferably installed outside the drying chamber 2.

Correspondingly, a through hole is formed in the position, aligned with one end of a chain wheel shaft of a driving chain wheel of the chain bed conveyor, of the drying bin 2, and the chain wheel shaft penetrates through the through hole to be connected with the driving part.

In a preferred embodiment, the conveying mechanism is a horizontal conveying mechanism.

Referring to the attached figure 1, the air collection cover 3 is provided with a plurality of air collection covers, and the corresponding dust removal openings are necessarily provided with a plurality of air collection covers, so that the hot air generated by the air entraining is prevented from being excessively concentrated. Accordingly, under this condition, the dust removal ports are distributed in the direction of the material inlet and outlet of the drying bin.

The dust removing openings are connected through a connecting pipe 4, and the connecting pipe 4 is connected with the dust removing device.

In order to reduce the concentration effect generated by air entraining, the dust removal opening is a wide opening, and a gas collection cover 3 with a big bottom and a small top is arranged at the wide opening for closing. The broad mouth is a relative concept, the gas collecting cover 3 is a cone-shaped structure, the big end of the gas collecting cover is matched with the broad mouth, and the broad mouth is a structure relative to the small end of the cone-shaped structure.

In the preferred embodiment, the end of the manifold 4 connected to the dust removing means is provided with a flow control valve 6, and the induced air force is controlled by the flow valve 6, so that the drying efficiency can be adjusted.

In the structure shown in fig. 1, the dust removing device includes a cyclone dust collector at a front stage and a bag dust collector at a rear stage. The cyclone dust collector is shown as dust collector 7 in fig. 1, and can directly convey part of dust without using a filtering device, and the cyclone dust collector is realized only by sedimentation, so that the problem of blockage can not be caused, particularly, part of steam can be cooled, and the settled dust can be used as a condensation nucleus to condense part of the steam.

And then use the filtering capability of cloth bag dust removal to filter the particulate matter in the waste gas, the particulate matter quantity at this moment has been less, and the load of cloth bag dust removal is lower, is difficult to become invalid.