CN216154782U - Anti-blocking type screw feeder for discharging - Google Patents

Abstract

The utility model relates to a discharge anti-blocking type screw feeder which comprises a shell, a screw penetrating through the shell and a motor driving the screw to rotate, wherein the screw comprises a screw shaft and screw blades arranged on the screw shaft, a feed inlet is formed in one end of the shell, a discharge outlet is formed in the other end of the shell, anti-blocking guide vanes with the conveying direction opposite to that of the screw blades are further arranged on the screw shaft, and the screw blades and the anti-blocking guide vanes are distributed on two sides of the discharge outlet along the axial direction of the screw shaft. The utility model aims to provide a discharge anti-blocking type screw feeder with an anti-blocking guide vane for garbage conveying, which can effectively prevent discharge blocking, and solves the problem that the existing screw feeder is easy to cause discharge blocking.

Description

Anti-blocking type screw feeder for discharging

Technical Field

The utility model relates to an environment-friendly machine, in particular to a discharge anti-blocking type screw feeder.

Background

The fluidized bed incineration technology is a novel clean incineration technology which is introduced and rapidly developed after digestion in the early seventies of the last century, and has the advantages of convenient operation, stable operation, good durability, long service life, high combustion efficiency, wide load regulation range, low pollutant discharge and high combustion heat intensity in a furnace. The fluidized bed incineration technology is mature and applied to a coal-fired power station boiler at first, and is developed by Zhejiang university after the nineties in the last century to test and demonstrate in the aspect of waste incineration treatment and popularize and apply.

Fluidized bed garbage incineration has been developed for more than 20 years since the application of 90 years in the last century, and in the process of improving and developing the technology of the fluidized bed garbage incinerator, a feeding device matched with the technology of the fluidized bed garbage incineration is also subjected to crank push plate feeding, triple hydraulic piston feeding, chain plate machine feeding, shaftless spiral feeding and roller feeding in sequence along with the improvement and development; the best roller feeding device is applied at present, the problems of uneven feeding and over-standard CO emission of the fluidized bed garbage incinerator are well solved, and the best roller feeding device is a feeding device commonly applied to the fluidized bed garbage incineration at present. However, the screw feeder has not been used for feeding in waste incineration because of the following reasons: the spiral blade is worn and abraded, and the garbage can be retained in the shell, so that the environmental protection performance is poor; the phenomenon of extruding into strips can be generated in the material conveying process, and the strips are easy to cross over the discharge hole to cause discharge blockage when being formed; the materials are compressed during conveying, so that the materials cannot be scattered and fall to be sufficiently burnt, and the tail gas emission is easy to reach the standard during burning; need the material of longer length to seal and just can realize that the feeding is sealed and prevent that gaseous pollutants from discharging from the feed inlet, lead to the feeding homogeneity poor this moment easily, the tail gas that produces when the inhomogeneous same that can lead to the burning of feeding is not up to standard.

The best roller feeding device is applied at present, the problems of uneven feeding and over-standard CO emission of the fluidized bed garbage incinerator are well solved, and the best roller feeding device is a feeding device commonly applied to the fluidized bed garbage incineration at present.

Although the roller feeder is the best feeding device currently used in the fluidized bed garbage incinerator, some defects are gradually shown along with the application of the roller feeder, and the defects are mainly shown in the following aspects:

1. the roller feeder is of a cavity structure, the diameter of the cylinder is large, and the occupied area is large.

2. The roller feeder is driven by a chain wheel, the roller body is supported on a riding wheel by a roller path, and the roller path and the riding wheel are worn along with the extension of the running time, particularly the abrasion of the roller path of the roller body has no repairability.

3. The cylinder body and the feeding and discharging end of the roller feeder are of a dynamic sealing structure, the sealing performance in operation is deteriorated along with the extension of the operation period, and sites of air leakage, material leakage and the like exist.

4. The feed inlet of the roller feeder is in a structure of a reducing or throat part in a feeding system, and the feed end is easy to accumulate and block and feed unevenly during large-flow feeding.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a discharge anti-blocking type screw feeder with an anti-blocking guide vane for garbage conveying, which can effectively prevent discharge blocking, and solves the problem that the existing screw feeder is easy to cause discharge blocking.

The technical problem is solved by the following technical scheme: the utility model provides a stifled formula screw feeder is prevented in ejection of compact, includes the shell, wears to establish the spiral and the drive screw pivoted motor in the shell, the spiral includes the screw axis and sets up the helical blade on the screw axis, and the one end of shell is equipped with the feed inlet, the other end is equipped with the discharge gate, a serial communication port, still be equipped with the stifled stator of preventing that direction of delivery is opposite with helical blade direction of delivery on the screw axis, helical blade with prevent stifled stator distribution in the discharge gate along the axial both sides of screw axis. When the material is fed to form a rod shape and cross across the discharge port, the anti-blocking blade can push the material reversely, and the material at the upper end can enter the discharge port by matching with the helical blade, so that the blocking phenomenon is not easy to generate.

Preferably, the anti-blocking guide vanes are at least two. The effect of back drive material is good.

Preferably, the anti-blocking guide vanes are uniformly distributed along the circumferential direction of the spiral. Can improve the anti-blocking effect.

Preferably, the casing is provided with a casing suspension lug, the motor is provided with a motor suspension lug, and the casing suspension lug and the motor suspension lug are connected together through a suspension pin crossed with the extension direction of the screw shaft. When in use, the connection between the motor and the end plate is not easy to loosen. The lugs can be designed on the housing body or on the end plate.

Preferably, the suspension pins are perpendicular to the screw axis. The anti-loosening effect is better.

Preferably, a shock insulation gasket is arranged between the shell part suspension lug and the motor part suspension lug. When the motor is started or reversed, the motor can swing in the axial direction of the spiral shaft, and the technical scheme can avoid hard impact in the process.

Preferably, the screw shaft comprises a shaft main body and shaft heads connected to two ends of the shaft main body, the screw shaft is connected with the end plate through the shaft heads, the screw blade is only arranged on the shaft main body, the shaft main body stretches across the discharge port, the screw blade extends to a position right above the discharge port, and the length of the part, extending to the position right above the discharge port, of the screw blade is less than one fourth of the axial size of the discharge port along the screw shaft. Can enough guarantee that the material is exported by whole transport discharge gates and does not have the phenomenon of being detained in the shell, can avoid the material to wear to establish the winding again in the spiral main part. If the shaft head is positioned above the discharge port (or the part of the shell body positioned above the discharge port is reduced), the phenomenon that the material is wound on the spiral is easily generated.

Preferably, the spiral shaft comprises a shaft main body and shaft heads connected to two ends of the shaft main body, the shaft main body is of a tubular structure, inner flanges are arranged at two ends of the shaft main body, shaft head flanges are arranged on the shaft heads, and the shaft head flanges and the inner flanges are connected together to connect the shaft heads and the shaft main body together. The shaft main body is light in weight and consumable while the diameter of the screw shaft is increased to prevent the caking phenomenon during conveying.

The utility model also comprises two mounting frames, two ends of the shell are supported on the mounting frames, and the shell is fixed with the mounting frames through the binding hoops. When the device is used, the device is supported by the mounting rack to realize mounting. The shell and the spiral can be conveniently moved and hoisted during installation and adjustment and integral maintenance.

Preferably, the shell is provided with a reverse conveying emergency discharge port, a discharge gate is arranged on the reverse conveying emergency discharge port, and the feed inlet is located between the reverse conveying emergency discharge port and the discharge port. When the spiral is radially reversed, the discharge gate is opened, so that the materials can be timely discharged to avoid the clamping of the feed end, and the discharge gate is closed under the normal operation condition.

Preferably, the housing is further provided with an inspection window, and the inspection window is provided with an openable inspection door. The device is mainly used for material conveying, guide vane abrasion and material fullness inspection under normal working conditions.

Preferably, there are at least three inspection windows, one inspection window is located at the position of the shell where the position of the shell above the discharge port can be observed, and the other inspection window is located at the position of the shell where the position of the shell below the feed port can be observed.

Preferably, the pitch of the helical blade is gradually increased from the end where the feed inlet is located to the end where the discharge outlet is located. The material flow can be elongated and thinned in the conveying process, different material conveying speeds are realized at the same rotating speed, the conveying speed of the material inlet section is low, the material is full, the conveying speed of the material outlet section is high, and the material is scattered, so that the material feeding device realizes sealed and uniform material feeding.

Preferably, the helical blade has at least two ends. So that the uniformity of the output material is better.

As preferred, the feed inlet is located the upside of casing, the feed inlet has the inlet pipe to the butt joint, the inlet pipe includes from the material diffusion section and the material seal section that upwards sets gradually down, the lower extreme of material diffusion section links together with the feed inlet, the open area of material diffusion section is more than the twice of the open area of material seal section, and the height of material seal section is more than the triple of the height of material diffusion section. According to the technical scheme, the feed inlet is not easy to accumulate and block during feeding by adopting a structure of combining the material sealing section and the expansion section; through the establishment of the filling and material sealing sections of the cavity of the feeding machine, the whole tightness of the feeding machine is greatly improved compared with the roller feeding, and the air leakage is basically avoided during operation.

Preferably, the material sealing section is prismatic. The reliability is good when the material sealing is carried out.

Preferably, a material level monitoring window, a high-level sensing material level instrument and a low-level sensing material level instrument are arranged on the material sealing section. The active regulation and control of the feeding amount can be realized.

Preferably, the material diffusion section is of a cuboid structure, and the size of the material diffusion section in the axial direction of the spiral is larger than that of the material diffusion section in the radial direction of the spiral. The diffusion effect is good.

Preferably, the material diffusion section is fixed with the shell through a hoop. The maintenance, the maintenance and the adjustment of the equipment are convenient.

Preferably, the material sealing section is a straight line structure extending up and down. When the material sealing is carried out, the material in the material sealing section can be reliably lowered.

Preferably, the discharge hole is connected with a discharge pipe, and the outlet end of the discharge pipe is connected with a discharge pipe part flange. And the butt joint with the next-level equipment is convenient.

The utility model has the following advantages: the problems that the existing screw feeder is easy to generate discharge blockage and to generate insufficient scattering of output materials due to the fact that the materials are compacted are solved, and a foundation is laid for the screw feeder to be used for conveying waste incineration; the screw feeder carries out rubbish and then does not have the following problem that roller feeder exists: the diameter of the cylinder is large, and the occupied area is large; the roller path and the riding wheel are worn; the sealing is deteriorated along with the extension of the operation period, and the phenomena of air leakage, material leakage and the like exist; the feeding end is easy to accumulate and block and the feeding is not uniform when the feeding is carried out at a large flow.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic view of a helix;

fig. 4 is a left side view schematically illustrating the present invention.

In the figure: the spiral 1, motor 2, screw axis 3, helical blade 4, discharge gate 5, shell 6, shell portion suspension ear 15, motor portion suspension ear 16, hang round pin 17, axle main part 18, spindle nose 19, inner flange 20, nose portion flange 21, mounting bracket 22, tie up hoop 23, prevent stifled stator 24, reverse transport emergency bin outlet 25, bin gate 26, inspection door 27, material diffusion section 28, material seal section 29, high level response level appearance 30, low level response level appearance 31, discharging pipe 32, discharging pipe portion flange 33, isolation gasket 34, staple bolt 35.

Detailed Description

The utility model is further described with reference to the following figures and examples.

Referring to fig. 1 to 4, the discharge anti-blocking type screw feeder comprises a shell 6, a screw 1 arranged in the shell in a penetrating way and a motor 2 driving the screw to rotate. The screw comprises a screw shaft 3 and screw blades 4 arranged on the screw shaft. One end of the shell is provided with a feed inlet, and the other end is provided with a discharge outlet 5. The screw shaft extends in the left-right direction. Two ends of the spiral shaft are hermetically and rotatably connected with two ends of the shell. The motor is connected to one end of the housing. The end of the shell connected with the motor is provided with a shell part suspension lug 15, the motor is provided with a motor part suspension lug 16, and the shell part suspension lug and the motor part suspension lug are connected together through a suspension pin 17 which is vertical to the extension direction of the spiral shaft. And a shock insulation gasket 34 is arranged between the shell part suspension lug and the motor part suspension lug. The screw shaft includes a shaft body 18 and a shaft head 19 connected to both ends of the shaft body. The screw shaft is connected with the end plate through the shaft head, the screw blade is only arranged on the shaft main body, the shaft main body stretches over the discharge port, the screw blade extends to the position right above the discharge port, and the length of the part of the screw blade extending to the position right above the discharge port is less than one fourth of the axial size of the discharge port along the screw shaft. The axle main body is of a tubular structure, inner flanges 20 are arranged at two ends of the axle main body, the axle head is provided with an axle head flange 21, and the axle head flange and the inner flanges are connected together to connect the axle head and the axle main body together. The utility model also comprises two mounting brackets 22 on which the two ends of the housing are supported, the housing being fixed to the mounting brackets by means of ties 23. The screw shaft is also provided with anti-blocking guide vanes 24 with the conveying direction opposite to that of the screw blades, and the screw blades and the anti-blocking guide vanes are distributed on two sides of the discharge port along the axial direction of the screw shaft. The anti-blocking guide vane has at least two, in this embodiment three, sheets. The anti-blocking guide vanes are uniformly distributed along the circumferential direction of the spiral. The shell is equipped with reverse transport emergency bin outlet 25, is equipped with bin gate 26 on the reverse transport emergency bin outlet, and the feed inlet is located between reverse transport emergency bin outlet and the feed opening. The housing is also provided with an inspection window provided with an openable inspection door 27. The inspection window has three, and an inspection window is located the position that can observe the casing and be located discharge gate top position of casing, one the inspection window is located the position that can observe the casing and be located feed inlet below position of casing. The pitch of the helical blade is gradually increased from the end where the feed inlet is located to the end where the discharge outlet is located. The helical blade has at least two ends. The feed inlet is located the upside of casing, and the feed inlet is docked there is the inlet pipe, and the inlet pipe includes material divergent section 28 and material seal section 29 that upwards sets gradually from the following, and the lower extreme of material divergent section links together with the feed inlet, specifically is fixed together with the shell through staple bolt 35. The opening area of the material diffusion section is more than two times of the opening area of the material sealing section, and the height of the material sealing section is more than three times of the height of the material diffusion section. The material sealing section is prismatic, and the material sealing section is of a straight line structure extending up and down. The material sealing section is provided with a material level monitoring window, a high-level sensing material level instrument 30 and a low-level sensing material level instrument 31. The material diffusion section is of a cuboid structure, and the size of the material diffusion section in the axial direction of the spiral is larger than that of the material diffusion section in the radial direction of the spiral. The discharge hole is connected with a discharge pipe 32 which is a square pipe. The outlet end of the discharge pipe is connected with a discharge pipe part flange 33.

Claims (8)

1. A discharge anti-blocking type screw feeder comprises a shell, a screw penetrating the shell and a motor driving the screw to rotate, wherein the screw comprises a screw shaft and a screw blade arranged on the screw shaft; the spiral shaft comprises a shaft main body and shaft heads connected to two ends of the shaft main body, the spiral shaft is connected with an end plate through the shaft heads, the spiral blade is only arranged on the shaft main body, the shaft main body stretches across the discharge port, the spiral blade extends to the position right above the discharge port, and the length of the part of the spiral blade extending to the position right above the discharge port is less than one fourth of the axial size of the discharge port along the spiral shaft; the discharge anti-blocking type screw feeder further comprises two mounting frames, the two ends of the shell are supported on the mounting frames, and the shell is fixed together with the mounting frames through hoops.

2. The discharge anti-blocking screw feeder according to claim 1, wherein the anti-blocking guide vanes are provided with at least two pieces.

3. The discharge anti-blocking type screw feeder according to claim 2, wherein the anti-blocking guide vanes are uniformly distributed along the circumferential direction of the screw.

4. The discharge anti-blocking screw feeder according to claim 1, 2 or 3, characterized in that the casing is provided with a casing suspension lug, the motor is provided with a motor suspension lug, and the casing suspension lug and the motor suspension lug are connected together by a suspension pin crossing the extension direction of the screw shaft.

5. The discharge anti-blocking screw feeder according to claim 4, wherein the suspension pins are perpendicular to the screw shaft.

6. The discharge anti-blocking type screw feeder according to claim 4, wherein a shock insulation gasket is arranged between the outer shell portion suspension lug and the motor portion suspension lug.

7. The discharge anti-blocking screw feeder according to claim 1, 2 or 3, wherein the screw shaft comprises a shaft main body and shaft heads connected to two ends of the shaft main body, the shaft main body is of a tubular structure, inner flanges are arranged in two ends of the shaft main body, the shaft heads are provided with shaft head flanges, and the shaft head flanges and the inner flanges are connected together to connect the shaft heads and the shaft main body together.

8. The discharge anti-blocking type screw feeder according to claim 1, 2 or 3, wherein the shell is provided with a reverse conveying emergency discharge port, a discharge gate is arranged on the reverse conveying emergency discharge port, and the feed port is positioned between the reverse conveying emergency discharge port and the discharge port.

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