Helical blade conveyor

Abstract

The utility model discloses a spiral blade conveyor, and relates to the technical field of dry powder conveying. The spiral blade conveyor comprises a trough and a cover plate detachably installed at the upper end of the trough, a spiral shaft is rotatably installed in the trough, one end of the spiral shaft is fixedly connected with a motor, and a discharging port is formed in the bottom of the trough. In order to solve the problem that when a spiral blade conveyor conveys materials such as dry putty powder, the materials are often adhered to the blades and cause blockage, air can be sprayed to the surfaces of the spiral shaft and the blades through the air nozzles, the attached materials can be cleaned in time, the roughness of the surfaces of the blades is increased through the protrusions, and the service life of the spiral blade conveyor is prolonged. The contact area between the materials and the surfaces of the blades is reduced, the material attachment possibility is reduced, the protruding structures facilitate falling of the materials from the surfaces of the blades during air injection cleaning, and the effect of preventing the materials from being stuck is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to dry powder conveying technical field, concretely is a kind of spiral blade conveyor. BACKGROUND

[0002] When the spiral blade conveyor is conveying putty powder dry powder and other building materials, it often faces the problem that materials stick to the blade and cause blockage, the reason is that powdery materials usually have certain viscosity and adsorbability, easily adhere to the surface of spiral blade, with the continuous progress of conveying process, the adhered material will gradually accumulate, form a relatively thick material layer, not only increase the weight and rotating resistance of blade, but also change the geometry of blade, affect the normal conveying of material.

[0003] Therefore, in order to solve the problem that the spiral blade conveyor often faces the problem that materials stick to the blade and cause blockage when conveying putty powder dry powder and other materials, it is necessary to provide a spiral blade conveyor. SUMMARY

[0004] The utility model discloses a kind of spiral blade conveyors, air can be sprayed to spiral shaft and blade surface by air jet nozzle, timely clean adhered material, the roughness of blade surface is increased by protrusion, reduce the contact area of material and blade surface, reduce the possibility of material adhesion, and when air jet cleaning, protrusion structure is conducive to material from blade surface drop, further enhance the effect of preventing material sticking, to solve the problem proposed in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] A kind of spiral blade conveyor, including trough and the cover plate of detachable installation on the upper end of trough, the spiral shaft is rotatably installed in the trough, one end of the spiral shaft is fixedly connected with motor, the bottom of the trough is provided with discharge port, variable pitch blade is arranged around on the rod body of the right side of discharge port of the spiral shaft, reverse blade is arranged around on the rod body of the left side of discharge port of the spiral shaft, the surface of variable pitch blade and reverse blade is all distributed with protrusion;

[0007] Air inlet pipe is installed on the cover plate by fixed frame, the air jet nozzle is sealingly connected on the bottom of air inlet pipe by air guide pipe, the air jet nozzle penetrates cover plate and extends into the trough, and air jet nozzle is arranged on the upper end of adjacent two blades.

[0008] Preferably, the trough is supported by the supporting leg.

[0009] Preferably, the cover plate is provided with feed inlet on the right side.

[0010] Preferably, the pitch of the variable pitch blade near the inlet is larger and is arranged between 400-600mm, and the pitch of the variable pitch blade near the outlet is smaller and is arranged between 200-400mm.

[0011] Preferably, the pitch of the reverse blade is the same as the pitch of the variable pitch blade near the outlet.

[0012] Preferably, flanges for connecting air compressors are arranged at the left and right ends of the air inlet pipe.

[0013] Preferably, air holes for cleaning the spiral shaft are arranged at the bottom of the air jet nozzle, and air holes for cleaning the blade are arranged at the side end of the air jet nozzle.

[0014] Compared with the prior art, the helical blade conveyor has the following beneficial effects:

[0015] 1. The helical blade conveyor can spray air to the spiral shaft and the blade surface through the air jet nozzle, so that the adhered material can be cleaned in time, the material is prevented from gradually accumulating on the blade due to its own adhesion and adsorption, and the problem of blockage caused by material accumulation is effectively prevented, so that the material conveying channel is always kept unobstructed.

[0016] 2. The helical blade conveyor increases the roughness of the blade surface through the protrusions, reduces the actual contact area between the material and the blade surface, makes it difficult for the material to adhere to the blade, and when the air jet nozzle sprays air for cleaning, the protrusion structure can further destroy the adhesion state of the material and the blade surface, so that the material is more easily detached from the blade surface, and the effect of preventing material adhesion is significantly enhanced.

[0017] 3. The helical blade conveyor can quickly transport and push the material at the inlet end through the variable pitch blade, and as the material gradually approaches the outlet, the material conveying speed is relatively slow, which helps the material to be discharged more uniformly and stably at the outlet, improves the stability of material conveying, prevents the material from flowing back during conveying through the reverse blade, prevents the material from remaining or accumulating near the outlet, and ensures that the material can be smoothly discharged. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the overall structure of the utility model;

[0019] Figure 2 It is a front view of the overall structure of the utility model;

[0020] Figure 3 It is a schematic view of the internal structure of the conveyor of the utility model;

[0021] Figure 4 It is a Figure 3 A enlarged view of A;

[0022] In the figure: 1, trough; 11, leg; 12, discharge port; 13, spiral shaft; 14, motor; 15, variable pitch blade; 16, reverse blade; 17, protrusion; 2, cover plate; 21, fixing frame; 22, air inlet pipe; 221, flange; 222, air guide pipe; 223, air nozzle; 224, air hole; 23, feed inlet. DETAILED DESCRIPTION

[0023] Please refer to Figures 1-3 A spiral blade conveyor, comprising a trough 1 and a cover plate 2 detachably mounted on the upper end of the trough 1, the trough 1 is supported by a leg 11, a spiral shaft 13 is rotatably installed in the trough 1, one end of the spiral shaft 13 is fixedly connected with a motor 14, and a discharge port 12 is formed at the bottom of the trough 1.

[0024] Among them, the design of the cover plate 2 is to prevent the material from splashing or overflowing the trough 1 during the conveying process. If the material overflows, not only will it cause resource waste, but also it may form dust in the workplace, affecting air quality and the health of the operators.

[0025] In order to solve the technical problem of how the conveyor conveys the material, please refer to Figures 1-3 The embodiment provides the following technical scheme:

[0026] The variable pitch blade 15 is arranged on the rod body on the right side of the discharge port 12, the reverse blade 16 is arranged on the rod body on the left side of the discharge port 12, and the surfaces of the variable pitch blade 15 and the reverse blade 16 are uniformly distributed with protrusions 17.

[0027] The cover plate 2 is provided with a feed inlet 23 on the right side, the pitch of one end of the variable pitch blade 15 close to the feed inlet 23 is relatively large and is arranged between 400-600 mm, the pitch of one end of the variable pitch blade 15 close to the discharge port 12 is relatively small and is arranged between 200-400 mm, and the pitch of the reverse blade 16 is the same as that of one end of the variable pitch blade 15 close to the discharge port 12.

[0028] Specifically, the material enters the trough 1 through the feed inlet 23, at this time the spiral shaft 13 starts to rotate under the drive of the motor 14, the variable pitch blade 15 on the rod body on the right side of the discharge port 12 rotates together with the spiral shaft 13, because the pitch of one end of the variable pitch blade 15 close to the feed inlet 23 is relatively large, the relatively large pitch enables the variable pitch blade 15 to quickly grasp and accommodate more material at this end, the material entering the trough 1 is quickly rolled in and pushed forward, laying a foundation for the subsequent conveying process.

[0029] As the screw shaft 13 continues to rotate, the material moves along the trough 1 towards the discharge port 12 under the push of the variable pitch blades 15. During this process, the pitch of the variable pitch blades 15 gradually decreases, causing the material to be gradually compressed and concentrated during the conveying process, and the conveying speed is also relatively slowed down. On the one hand, the material is conveyed forward more orderly under the action of the gradually decreasing pitch, avoiding the accumulation or blockage of the material during the conveying process. On the other hand, this gradually compressed conveying method helps to improve the density of the material, preparing for the stable discharge at the discharge port 12 in the future.

[0030] When the material is conveyed to the vicinity of the discharge port 12, the reversing blade 16 begins to function. Its rotation direction is opposite to that of the variable pitch blade 15, which can prevent the material from flowing back during the conveying process, prevent the material from flowing back, and also prevent the material from remaining or accumulating near the discharge port 12, ensuring that the material can be discharged smoothly.

[0031] The protrusion 17 increases the roughness of the blade surface and reduces the actual contact area between the material and the blade surface, making it difficult for the material to adhere to the blade. At the same time, when the jet nozzle 223 performs jet cleaning, the protrusion 17 structure can further disrupt the adhesion between the material and the blade surface, making it easier for the material to fall off the blade surface, and significantly enhancing the effect of preventing material adhesion.

[0032] To address the technical challenge of preventing material adhesion in conveyors, please refer to [link / reference]. Figures 3-4 This embodiment provides the following technical solution:

[0033] An air inlet pipe 22 is installed on the cover plate 2 via a fixing bracket 21. Flanges 221 for connecting to an air compressor are installed at both ends of the air inlet pipe 22. An air nozzle 223 is sealed to the bottom of the air inlet pipe 22 via an air guide pipe 222.

[0034] The nozzle 223 penetrates the cover plate 2 and extends into the trough 1. The upper ends of two adjacent blades are provided with nozzles 223. The bottom of the nozzle 223 is provided with a cleaning vent 224 for the cleaning spiral shaft 13, and the side end of the nozzle 223 is provided with a cleaning vent 224 for the blade.

[0035] Specifically, the air inlet pipe 22 is connected to the air compressor via flange 221 to ensure a stable supply of compressed air. During the operation of the conveyor, the compressed air generated by the air compressor enters the nozzle 223 through the air inlet pipe 22 and the air guide pipe 222, and then is ejected at high speed from the air hole 224. The high-speed airflow can directly act on the surface of the screw shaft 13 and the blades to blow off the attached material, keep the screw shaft 13 and the blades clean, and ensure the normal conveying of materials.

[0036] Working principle: the spiral blade conveyor, in use, the material is introduced into the chute 1 through the feed inlet 23, the motor 14 is started, the variable pitch blade 15 and the reverse blade 16 are driven to rotate by the spiral shaft 13, at this time, due to the large pitch, the material at the feed inlet 23 is quickly rolled in and pushed forward, as the material moves, the pitch of the variable pitch blade 15 gradually decreases, so that the material is gradually compressed and concentrated during the conveying process, and the conveying speed is relatively slow, this gradual compression conveying method helps to improve the compactness of the material, and prepares for the stable discharge at the discharge port 12, when the material is conveyed to the vicinity of the discharge port 12, the reverse blade 16 begins to play a role, its rotating direction is opposite to that of the variable pitch blade 15, which can prevent the material from flowing back during the conveying process, prevent the material from remaining or accumulating near the discharge port 12, and ensure that the material can be smoothly discharged, at the same time, during the operation of the conveyor, the compressed air generated by the air compressor enters the air nozzle 223 through the air inlet pipe 22 and the air guide pipe 222, and then is sprayed out from the air hole 224 at high speed, the high-speed airflow can directly act on the spiral shaft 13 and the blade surface for blowing, blow off the adhered material, keep the spiral shaft 13 and the blade clean, and ensure the normal conveying of the material.

Claims

1. A spiral blade conveyor, comprising a trough (1) and a cover plate (2) detachably mounted on the upper end of the trough (1), wherein a spiral shaft (13) is rotatably mounted inside the trough (1), and a motor (14) is fixedly connected to one end of the spiral shaft (13), characterized in that: The bottom of the trough (1) is provided with a discharge port (12). The spiral shaft (13) is surrounded by variable pitch blades (15) on the rod body on the right side of the discharge port (12). The spiral shaft (13) is surrounded by reversing blades (16) on the rod body on the left side of the discharge port (12). The surfaces of the variable pitch blades (15) and the reversing blades (16) are covered with protrusions (17). An air inlet pipe (22) is installed on the cover plate (2) by a fixing bracket (21). The bottom of the air inlet pipe (22) is sealed with an air nozzle (223) through an air guide pipe (222). The air nozzle (223) penetrates the cover plate (2) and extends into the material trough (1). An air nozzle (223) is provided on the upper end of two adjacent blades.

2. The spiral blade conveyor according to claim 1, characterized in that: The feed trough (1) is supported by a support leg (11).

3. The spiral blade conveyor according to claim 1, characterized in that: The cover plate (2) has a feed inlet (23) on its right side.

4. The spiral blade conveyor according to claim 3, characterized in that: The pitch of the variable pitch blade (15) is larger at the end near the feed inlet (23) and is set between 400-600mm. The pitch of the variable pitch blade (15) is smaller at the end near the discharge outlet (12) and is set between 200-400mm.

5. The spiral blade conveyor according to claim 1, characterized in that: The pitch of the reverse blade (16) is the same as the pitch of the variable pitch blade (15) at the end near the discharge port (12).

6. The spiral blade conveyor according to claim 1, characterized in that: The left and right ends of the air intake pipe (22) are each equipped with a flange (221) for connecting an air compressor.

7. The spiral blade conveyor according to claim 1, characterized in that: The bottom of the jet nozzle (223) is provided with an air hole (224) for cleaning the spiral shaft (13), and the side end of the jet nozzle (223) is provided with an air hole (224) for cleaning the blades.

Images