CN217576917U

CN217576917U - Spiral feeder

Info

Publication number: CN217576917U
Application number: CN202221622655.9U
Authority: CN
Inventors: 赫勃兴; 李青; 李�远; 杨宗宝; 任士芳; 张顶; 刘彬; 韩军; 宋元生; 杜玉平
Original assignee: Beijing Yuanda Xinda Technology Co Ltd; Gansu Xukang Material Technology Co Ltd
Current assignee: Beijing Yuanda Xinda Technology Co Ltd; Gansu Xukang Material Technology Co Ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-10-14
Anticipated expiration: 2032-06-27

Abstract

The utility model discloses a spiral feeder, which comprises a spiral shaft, a spiral sheet and a spiral pipe, wherein the spiral sheet is arranged on the spiral shaft; the spiral pipe comprises an outer pipe and an inner pipe which are concentrically arranged, a first cavity is formed between the outer pipe and the inner pipe, a compressed air inlet is formed in the outer pipe, and a plurality of compressed air blowing nozzles are formed in the inner pipe; the spiral shaft is concentrically positioned in the inner tube; the two ends of the outer pipe and the inner pipe are hermetically connected, so that the first cavity is a sealed cavity; the compressed air inlet is communicated to the compressed air storage tank. The utility model discloses a form first cavity between outer tube and inner tube to set up compressed air on the inner tube and sweep the mouth, through sweeping of compressed air, make the easy bonding powder material between spiral and the spiral pipe suspend near the screw axis as far as possible, frictional force between the spiral that significantly reduces and the batch improves reinforced stability, reduces the high temperature radiation power of screw axis, prolongs the life of spiral feeder, and does not influence kiln internal pressure and kiln atmosphere.

Description

Spiral feeder

Technical Field

The utility model relates to a pharmaceutical glass batch charging equipment carries technical field, especially relates to a spiral feeder.

Background

At present, borosilicate medical glass raw materials used in production need to be uniformly mixed and then enter a furnace through a spiral feeder, generally, the spiral feeder is used for feeding materials into the furnace, the axial thrust of a spiral is utilized to push the materials, and powdery materials can enter the furnace along a spiral pipe; however, it has the main disadvantages of high unit power consumption, severe abrasion of the screw and the shaft, and easy blockage. Therefore, the stability of the feeder can be seriously influenced for a long time, and the service life of the spiral feeder is shortened.

Based on this, the prior art still remains to be improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, an embodiment of the utility model provides a spiral feeder to it is great to solve current spiral feeder unit power consumption, sends wearing and tearing easily, the technical problem of easy jam.

The embodiment of the utility model discloses a spiral feeder, which comprises a spiral shaft, a spiral sheet and a spiral pipe, wherein the spiral sheet is arranged on the spiral shaft;

the spiral pipe comprises an outer pipe and an inner pipe which are concentrically arranged, a first cavity is formed between the outer pipe and the inner pipe, a compressed air inlet is formed in the outer pipe, and a plurality of compressed air blowing nozzles are formed in the inner pipe; the screw shaft is concentrically located within the inner tube.

Furthermore, two ends of the outer pipe and two ends of the inner pipe are hermetically connected, so that the first cavity is a sealed cavity; the compressed air inlet is communicated to the compressed air storage tank.

Further, the distance between the spiral sheet and the inner wall of the inner pipe is 1.5-2.5cm; the height of the compressed air blowing nozzle protruding out of the inner wall of the inner pipe is 0.8-1.2mm.

Furthermore, a plurality of purging nozzle inspection ports are formed in the outer pipe, and the purging nozzle inspection ports and the compressed air purging nozzles are concentric and are arranged in one-to-one correspondence;

and a sealing plug is arranged on the blowing nozzle check opening.

The feeding device further comprises a feeding bin, wherein an inner pipe feeding hole is formed in the inner pipe, and an outer pipe feeding hole is formed in the outer pipe;

the lower extreme in feeding storehouse passes outer tube feed inlet is connected sealedly inner tube feed inlet, and, the outer tube feed inlet with the sealed setting in junction in feeding storehouse.

Furthermore, the circumference of the inner tube where the inner tube feeding hole is located is not provided with the compressed air blowing nozzle.

The screw shaft is connected with the outer tube through a screw shaft, and the outer tube is connected with the screw shaft through a screw shaft.

Further, the compressed air purging nozzle comprises a columnar part and a noise reduction part extending from the columnar part to the gas conveying direction, the inner diameter of the noise reduction part is the same as that of the columnar part, and an air outlet of the compressed air purging nozzle is formed at the free end of the noise reduction part;

and along the gas conveying direction, the wall thickness of the noise reduction part is gradually reduced, and the wall of the noise reduction part is provided with a vent hole.

Further, the inner diameter of the columnar part is 6-8mm, and the aperture of the vent hole is 1-2mm.

Further, the number of the vent holes is two, and the vent holes are symmetrically arranged relative to the center line of the columnar portion.

Further, a first included angle is formed between the center line of the vent hole and the center line of the columnar portion, and the first included angle is 45-60 degrees.

Further, a center line of the columnar portion is perpendicular to an axis of the screw shaft.

Further, the compressed air blowing nozzles are arranged in two rows and are respectively arranged at the upper end and the lower end of the inner pipe.

Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has at least:

the utility model provides a spiral feeder is through forming first cavity between outer tube and inner tube to set up compressed air on the inner tube and sweep the mouth, through sweeping of compressed air, make the easy bonding powder between spiral and the spiral pipe suspend near the screw axis as far as possible, frictional force between the greatly reduced spiral and the batch improves reinforced stability, reduces the high temperature radiation power of screw axis, prolongs spiral feeder's life, and does not influence kiln internal pressure and kiln atmosphere.

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 a spiral feeder according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a compressed air purge nozzle of a screw feeder according to an embodiment of the present invention;

fig. 3 is a cross-sectional view of a spiral feeder according to an embodiment of the present invention.

Reference numerals:

1. the device comprises a power transmission device, 2, a support body, 3, a feeding bin, 4, a spiral pipe, 5, a spiral shaft, 6, a spiral sheet, 7, a compressed air blowing nozzle, 8, a compressed air inlet, 9, a blowing nozzle inspection opening, 10 and a first cavity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are only used for convenience of expression and should not be understood as limitations to the embodiments of the present invention, and the following embodiments do not describe any more.

As shown in fig. 1-3, some embodiments of the present invention disclose a screw feeder, comprising a screw shaft 5, a spiral sheet 6 and a spiral pipe 4, wherein the spiral sheet 6 is mounted on the screw shaft 5; the spiral pipe 4 comprises an outer pipe and an inner pipe which are concentrically arranged, a first cavity 10 is formed between the outer pipe and the inner pipe, a compressed air inlet 8 is formed in the outer pipe, and a plurality of compressed air blowing nozzles 7 are formed in the inner pipe; the screw shaft 5 is concentrically located within the inner tube. The two ends of the outer pipe and the inner pipe are hermetically connected, so that the first cavity 10 is a sealed cavity; the compressed air inlet 8 is communicated to a compressed air storage tank.

During the use, through forming first cavity 10 between outer tube and inner tube to set up compressed air on the inner tube and sweep mouth 7, through compressed air's sweeping, make the easy bonding powder between spiral and spiral pipe 4 suspend near screw axis 5 as far as possible, the frictional force between the greatly reduced spiral and the batch improves reinforced stability, reduces the high temperature radiation power of screw axis 5, prolongs the life of spiral feeder, and does not influence kiln internal pressure and kiln atmosphere.

According to the spiral feeder disclosed by some embodiments of the utility model, on the basis of the above embodiments, the outer tube is provided with a plurality of purging nozzle check ports 9, and the purging nozzle check ports 9 and the compressed air purging nozzles 7 are concentric and are arranged in a one-to-one correspondence manner; and a sealing plug is arranged on the blowing nozzle inspection port 9. The long-time dust collection and cleaning of the blowing nozzle and the damage and replacement are convenient. Compressed air sweeps mouth 7 and evenly arranges on the inner tube for a plurality of, make the compressed gas in the first cavity 10 sweep mouth 7 and blow out by compressed air, compressed air can blow the material of being detained between flight 6 and the spiral pipe 4 through sweeping the mouth and float perpendicularly, reduce the material, screw axis 5, frictional force between the three of the 4 inner walls of spiral pipe, the putty condition in the spiral pipe 4 that significantly reduces, the reinforced stability of screw feeder has been improved, reduce the heat radiation of screw axis 5, prolong its life, just because it sweeps the direction and is perpendicular to 5 direction of motion directions of screw axis to sweep the mouth, so do not influence the inside atmosphere of kiln and pressure, guarantee the stability of melting process.

Generally, the compressed air purge nozzle 7 is not provided on the circumference of the inner tube where the inner tube feed opening is located. Namely, the compressed air blowing nozzle 7 is not arranged at the vertical position below the feeding hole, so that the situation that the batch is blown back into the feeding hopper by compressed air is considered, and the blanking effect is influenced.

The spiral feeder disclosed by some embodiments of the utility model further comprises a feeding bin 3, a power transmission device 1 and a support body 2 on the basis of the above embodiments, wherein the inner pipe is provided with an inner pipe feeding port, and the outer pipe is provided with an outer pipe feeding port; the lower end of the feeding bin 3 penetrates through the outer pipe feeding hole to be hermetically connected with the inner pipe feeding hole, and the joint of the outer pipe feeding hole and the feeding bin 3 is hermetically arranged. The power transmission device 1 is connected with one end of the screw shaft 5 to drive the screw shaft 5 to rotate, and the support body 2 supports the power transmission device 1 and the outer tube. The sealing device is arranged at the front ends of the structures of the power transmission device 1 and the supporting body 2, so that the situation that the blown batch enters the power transmission device 1 through a mechanism connecting gap by compressed air and then the guide screw feeder is damaged is avoided.

After the batch drops into the feed inlet, the batch in 3 hoppers in feeding storehouse is on the dead weight and the axial direction of drive of screw axis 5, can slowly push into the kiln, but because the batch, flight 6, the frictional force between the inside of spiral pipe 4, make flight 6 and the inside batch that exists of spiral pipe 4 detain the part, and the batch receives the kiln heat radiation in the spiral pipe 4, lead to the batch can partially harden, these factors can all influence reinforced stability, reduce the life-span of spiral feeder, consequently, set up the compressed air pipeline in spiral pipe 4 inside, and evenly distributed compressed air sweeps mouth 7 on the pipeline, compressed air inlet 8 sets up in the below that spiral pipe 4 said, put through with power transmission's compressed air gaseous phase.

The utility model discloses a spiral feeder, on the basis of above-mentioned embodiment, compressed air sweeps mouth 7 and includes column portion and by the noise reduction portion that the column portion extends to gas conveying direction, the internal diameter of noise reduction portion is the same with the internal diameter of column portion, forms the gas outlet that compressed air sweeps mouth 7 at the free end of noise reduction portion; and along the gas conveying direction, the wall thickness of the noise reduction part is gradually reduced, and the wall of the noise reduction part is provided with a vent hole. The number of the vent holes is two, and the vent holes are symmetrically arranged relative to the center line of the columnar part. A first included angle is formed between the central line of the vent hole and the central line of the columnar portion, and the first included angle is an acute angle. The center line of the columnar part is perpendicular to the axis of the screw shaft 5. Namely, the compressed air blowing nozzle 7 is designed to be a middle through hole, and through most of air, two sides of the compressed air blowing nozzle are respectively provided with an air vent, so that the noise generated when the compressed air passes through the blowing nozzle is reduced, the environmental pollution is reduced, and the passing air flow is uniform and stable.

In some embodiments, the compressed air blowing nozzles 7 are arranged in two rows and are respectively arranged at the upper end and the lower end of the inner pipe, and the distance between the spiral sheet 6 and the inner wall of the inner pipe is 1.5-2.5cm; the height of the compressed air blowing nozzle 7 protruding out of the inner wall of the inner pipe is 0.8-1.2mm. The inner diameter of the columnar part is 6-8mm, and the aperture of the vent hole is 1-2mm.

To sum up, the embodiment of the utility model discloses spiral feeder utilizes compressed air to sweep the delay material between flight 6 and the spiral pipe 4, changes traditional spiral feeder and relies on screw axis 5 to single thrust promotion material, causes phenomenons such as

screw axis

5 and 6 wearing and tearing of flight to take place, utilizes compressed air to sweep perpendicularly the material between spiral feeder screw axis 5 and the spiral pipe 4, reducees the friction between material and the screw axis 5 greatly, reaches to improve reinforced stability, cools down for screw axis 5, the purpose in extension spiral feeder life-span.

It should be noted that, the components or steps in the above embodiments can be mutually intersected, replaced, added or deleted, and therefore, the combination formed by these reasonable permutation and combination transformations shall also belong to the protection scope of the present invention, and shall not limit the protection scope of the present invention to the above embodiments.

The above is an exemplary embodiment of the present disclosure, and the order of the embodiment of the present disclosure is only for description, and does not represent the merits of the embodiment. It should be noted that the discussion of any embodiment above is exemplary only, and is not intended to imply that the scope of the disclosure of embodiments of the invention (including the claims) is limited to these examples, since various changes and modifications may be made without departing from the scope defined by the claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements disclosed in the embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the concept of the embodiments of the invention, also combinations between technical features in the above embodiments or in different embodiments are possible, and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit or scope of the embodiments of the present invention are also intended to be included within the scope of the embodiments of the present invention.

Claims

1. The spiral feeder is characterized by comprising a spiral shaft, a spiral sheet and a spiral pipe, wherein the spiral sheet is arranged on the spiral shaft;

the spiral pipe comprises an outer pipe and an inner pipe which are concentrically arranged, a first cavity is formed between the outer pipe and the inner pipe, a compressed air inlet is formed in the outer pipe, and a plurality of compressed air blowing nozzles are formed in the inner pipe; the screw shaft is concentrically positioned in the inner tube;

the two ends of the outer pipe and the inner pipe are hermetically connected, so that the first cavity is a sealed cavity; the compressed air inlet is communicated to the compressed air storage tank.

2. The screw feeder of claim 1, wherein the distance between the screw flight and the inner wall of the inner tube is 1.5-2.5cm; the height of the compressed air blowing nozzle protruding out of the inner wall of the inner pipe is 0.8-1.2mm.

3. The screw feeder according to claim 1, wherein a plurality of purge nozzle inspection ports are provided on the outer tube, the purge nozzle inspection ports being concentric with and in one-to-one correspondence with the compressed air purge nozzles; and a sealing plug is arranged on the blowing nozzle inspection opening.

4. The spiral feeder according to claim 1, further comprising a feeding bin, wherein the inner tube is provided with an inner tube feeding port, and the outer tube is provided with an outer tube feeding port;

the lower end of the feeding bin penetrates through the outer pipe feeding port to be hermetically connected with the inner pipe feeding port, and the joint of the outer pipe feeding port and the feeding bin is hermetically arranged.

5. The screw feeder of claim 4, wherein the compressed air purge nozzle is not provided on the circumference of the inner tube where the inner tube feed opening is located.

6. The screw feeder of claim 1, further comprising a power transmission device and a support body, wherein the power transmission device is connected to one end of the screw shaft to rotate the screw shaft, and the support body supports the power transmission device and the outer tube.

7. The screw feeder according to claim 1, wherein the compressed air purge nozzle includes a columnar portion and a noise reduction portion extending from the columnar portion in a gas conveying direction, an inner diameter of the noise reduction portion being the same as an inner diameter of the columnar portion, an air outlet of the compressed air purge nozzle being formed at a free end of the noise reduction portion, a center line of the columnar portion being perpendicular to an axis of the screw shaft;

8. The screw feeder according to claim 7, wherein the vent holes are two and are symmetrically arranged with respect to a center line of the columnar portion;

the inner diameter of the columnar part is 6-8mm, and the aperture of the vent hole is 1-2mm.

9. The screw feeder of claim 7, wherein a first included angle is provided between a center line of the vent hole and a center line of the cylindrical portion, the first included angle being 45 ° to 60 °.

10. The screw feeder of claim 1, wherein the compressed air purge nozzles are in two rows and are disposed at the upper and lower ends of the inner tube, respectively.