Flow-aiding type powder arch-breaking discharging device

Abstract

The utility model discloses a flow-aiding powder arch-breaking discharging device which comprises an arch-breaking disturbance device, a feeding box, a chain type driving device and a driving motor. The feeding box is mounted at a discharging flange below a powder bin conical hopper, and a chain type driving device and a driving motor are mounted on the side wall of the feeding box; the arch breaking disturbance device comprises two main body parts, namely a disturbance scraping blade and a scraping blade sleeve, the disturbance scraping blade is arranged in the powder bin conical hopper, and the scraping blade sleeve is arranged in the feeding box and is rigidly connected with the disturbance scraping blade; a sleeve driving gear is arranged on the circumferential outer wall of the lower middle side of the scraper sleeve, the sleeve driving gear is installed in the feeding box clamping groove, and under the combined action of the chain type driving device and the driving motor, the scraper sleeve drives the disturbance scraper to do circular motion along the inner wall of the powder bin conical hopper so as to disturb materials in the powder bin conical hopper. The problems of internal hardening, cavities and the like of materials can be effectively solved under the action of disturbance and centripetal force generated in the operation process of the arch breaking disturbance device, and smooth discharging is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solid powder material storage and transportation field relates to a flow-aided powder arch breaking and discharging device. BACKGROUND

[0002] Solid powder material conveying has a relatively wide application in food and chemical industry. Due to the special properties of some raw materials such as moisture absorption and oxidation, the material in the silo is prone to hardening and arching. Once the hardening or arching occurs, the material cannot flow normally, affecting the normal operation of the next production process.

[0003] For the problem of material hardening, the common disturbance methods in China at present are mainly mechanical vibration, compressed air fluidization and mechanical scraper arch breaking. Mechanical vibration achieves arch breaking and disturbance by vibrating the hopper. During operation, the noise is loud, and the connecting rubber is prone to breakage and powder leakage. Moreover, the material may become more compact with vibration. Compressed air fluidization technology achieves the disturbance effect by breaking the hardened material layer in the silo through pulse compressed air. However, the compressed air flow is single, the arch breaking range is small, and the compressed air may affect the bulk density of the material, causing inaccurate metering. Mechanical scraper arch breaking mainly rotates the arch breaking shaft driven by a motor in the powder silo, and the mechanical scraper on the arch breaking shaft disturbs the material. However, the scraper is often broken, and the problem of screw jamming and deformation after entering the powder conveying screw also occurs from time to time.

[0004] Due to the problems of the above-mentioned discharging devices, most powder storage and preparation systems are not in good condition after being put into operation. Problems such as blockage of the discharging and conveying device, inaccurate dosage of the medicament, twisting and deformation of the conveying screw, and breakage of the scraper often occur, affecting the safe and stable operation of the system. SUMMARY

[0005] In order to overcome the shortcomings of the existing devices, the utility model provides a flow-aided powder arch breaking and discharging device. By optimizing the form of mechanical arch breaking scraper, the disturbance effect of the mechanical scraper during operation in the powder silo is improved, and the arch breaking efficiency is improved. At the same time, the probability of jamming caused by breakage of the scraper to the subsequent conveying device is prevented.

[0006] The technical scheme of the utility model is: a flow-aided powder arch breaking and discharging device, comprising an arch breaking and disturbing device, a feeding box, a chain type driving device and a driving motor.

[0007] The feeding box is installed below the discharge flange of the powder silo cone hopper. The chain type driving device and the driving motor are installed on the side wall of the feeding box.

[0008] The feeding box is composed of an upper flange of the feeding box, a lower flange of the feeding box, a cylinder of the feeding box and a clamping groove of the feeding box. The cylinder of the feeding box is hollow, which is the working area of the chain type driving device. The clamping groove of the feeding box is embedded in the inner wall of the cylinder of the feeding box.

[0009] The arch breaking and disturbing device comprises two main parts of a disturbing scraper and a scraper sleeve, the disturbing scraper is arranged in the interior of the powder bin hopper and closely contacts the inner wall of the powder bin hopper, the scraper sleeve is arranged in the interior of the feeding box and is rigidly connected with the disturbing scraper, a sleeve sealing is arranged on the outer wall of the scraper sleeve on the upper side along a circle, the sleeve sealing is used for sealing the gap between the arch breaking and disturbing device and the feeding box, and the gap is prevented from being filled with powder when the arch breaking and disturbing device rotates, the scraper sleeve is provided with a sleeve driving gear on the circumferential outer wall of the middle and lower side, the sleeve driving gear is installed in the interior of the clamping groove of the feeding box, under the joint action of the chain driving device and the driving motor, the disturbing scraper is driven by the scraper sleeve to make the circumferential motion along the inner wall of the powder bin hopper, and the material in the powder bin hopper is disturbed.

[0010] Further, the driving motor is installed on the side wall of the feeding box and is connected with the disturbing scraper through the chain driving device.

[0011] Further, the disturbing scraper is of an irregular spiral curved surface plate structure, the spiral curved surface radian gradually decreases from top to bottom, the disturbing scraper is wide on the top and narrow on the bottom, and the top and bottom proportions are consistent with the vertical section of the powder bin hopper.

[0012] Further, the gap between the scraper sleeve and the feeding box is sealed by rubber brushes, so that the material is prevented from entering the chain driving device when the disturbing scraper rotates.

[0013] Further, the bottom of the feeding box is a flange interface and is connected with the subsequent powder conveying device, the material stored in the powder bin hopper is continuously fed into the subsequent powder conveying device after being disturbed by the disturbing scraper, and the normal transfer of the material is realized.

[0014] Further, the upper flange of the feeding box is connected with the powder bin hopper, the lower flange of the feeding box is matched with the installation of the gate valve, and the material in the powder bin hopper is completely cut off when the subsequent powder conveying device is overhauled.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model discloses a flow-aiding powder arch breaking and discharging device, which mainly comprises an arch breaking and disturbing device, a feeding box, a chain driving device and a driving motor.

[0017] 2. The disturbing scraper is of an irregular spiral curved surface plate structure, the material contact surface is similar to a conveying spiral, the upper material of the disturbing scraper is pushed downward along the curved surface in the running process, forming a downward extrusion force, which is helpful for powder conveying.

[0018] 3. The utility model discloses a disturbance blade is wide on the top and narrow on the bottom, and is consistent with the upper and lower proportion of the vertical section of the powder bin hopper, can produce uniform pushing force to the material in the hopper, so that the material in the bin is better.

[0019] 4. The utility model discloses a feeding box as the carrier of the disturbance device and the driving device, also plays the intermediate link role of connecting the powder bin hopper and the conveying screw, and is easy to install. The feeding box bottom can be matched with the installation of the gate valve, and the powder in the powder bin can be completely cut off when the screw conveying device is overhauled, so that the risk of leakage of powder caused by the existence of the arch breaking shaft during the insertion of the plate is avoided.

[0020] 5. The utility model discloses a driving motor is installed on the side wall of the feeding box, and is connected with the scraper sleeve of the arch breaking disturbance device through the chain type driving device, and the driving motor can be frequency conversion controlled and can be selected according to the system configuration process requirement. DRAWINGS

[0021] Figure 1 It is a kind of flow-aiding type powder arch breaking and discharging device assembly diagram;

[0022] Figure 2 It is the structure diagram of arch breaking disturbance device;

[0023] Figure 3 It is the structure diagram of feeding box;

[0024] Explanation of figures:1-powder bin hopper, 2-arch breaking disturbance device, 3-feeding box, 4-chain type driving device, 5-driving motor, 2-1-disturbance blade, 2-2-blade sleeve, 2-3-sleeve seal, 2-4-sleeve driving gear, 3-1-feeding box upper flange, 3-2-feeding box lower flange, 3-3-feeding box cylinder, 3-4-feeding box clamping groove. SPECIFIC IMPLEMENTATION

[0025] The utility model contents are further described in detail below in connection with the drawings.

[0026] Referring to Figure 1 A flow-aiding type powder arch breaking and discharging device includes arch breaking disturbance device 2, feeding box 3, chain type driving device 4 and driving motor 5 several main components.

[0027] Feeding box 3 is installed at the discharge flange under powder bin hopper 1, and chain type driving device 4 and driving motor 5 are installed on the side wall of feeding box 3. The bottom of feeding box 3 is flange interface, and the arch breaking and discharging device is also discharge port when running, and is connected with subsequent powder conveying device.

[0028] Referring to Figure 2The arch breaking and disturbing device 2 comprises two parts, a disturbing blade 2-1 and a blade sleeve 2-2. The disturbing blade 2-1 is arranged inside the solid material powder bin hopper 1 and closely adheres to the inner wall of the powder bin hopper 1; the blade sleeve 2-2 is arranged inside the feeding box 3 and is hard connected with the disturbing blade 2-1. The outer wall of the blade sleeve 2-2 is provided with a sleeve sealing 2-3 on the upper side along a circle, which is mainly used for sealing the gap between the arch breaking and disturbing device 2 and the feeding box 3 to prevent the powder from entering the chain driving device 4 when the arch breaking and disturbing device 2 rotates. The outer wall of the blade sleeve 2-2 is provided with a sleeve driving gear 2-4 on the lower side along a circle, which is installed inside the feeding box slot 3-4. Under the joint action of the chain driving device 4 and the driving motor 5, the disturbing blade 2-1 driven by the blade sleeve 2-2 can move along the inner wall of the powder bin hopper 1 to disturb the material in the powder bin hopper 1.

[0029] The gap between the blade sleeve 2-2 and the feeding box 3 is sealed by a rubber brush to prevent the material from entering the chain driving device 4 when the disturbing blade 2-1 rotates.

[0030] The disturbing blade 2-1 is of an irregular spiral curved surface plate structure, and the spiral curved surface arc decreases from top to bottom. In the running process, the upper material is pushed downward along the curved surface to form a downward extrusion force, which is helpful for powder conveying. At the same time, the spiral curved surface can reduce the counter thrust of the disturbing blade 2-1 from the solid powder in the running process, effectively protecting the disturbing blade 2-1 from being broken. The disturbing blade 2-1 is wide at the top and narrow at the bottom, which is consistent with the vertical section of the powder bin hopper 1, can produce uniform pushing force on the material in the powder bin hopper 1, and makes the material in the powder bin hopper 1 better. The disturbing blade 2-1 is made of carbon steel or stainless steel with a thickness of 8-10 mm, which is selected according to the chemical properties of the stored material.

[0031] The driving motor 5 is installed on the side wall of the feeding box 3 and is connected with the disturbing blade 2-1 through the chain driving device 4. The driving device 5 acts on the blade sleeve 2-2 to drive the disturbing blade 2-1 to rotate. The output speed of the driving motor is 40-60 r / min, which can be controlled by frequency conversion. The system configuration process requirements can be selected.

[0032] Referring to Figure 3, the feeding box 3 is composed of a feeding box upper flange 3-1, a feeding box lower flange 3-2, a feeding box barrel 3-3 and a feeding box clamping groove 3-4. The feeding box 3 serves as a carrier of the arch breaking and disturbing device 2 and the chain type driving device 4, and simultaneously plays a role of an intermediate link connected with the powder bin hopper 1 and subsequent powder conveying devices. The feeding box upper flange 3-1 is connected with the powder bin hopper 1, the feeding box lower flange 3-2 can be installed with a gate valve, and when the subsequent powder conveying device is maintained, the material in the powder bin hopper 1 can be completely cut off to prevent the material from being not completely isolated due to the influence of the mechanical arch breaking shaft. The feeding box barrel 3-3 is hollow, and is a working area of the chain type driving device 4. The feeding box clamping groove 3-4 is embedded in the lower middle position of the inner wall of the feeding box barrel 3-3, and is used for connecting the sleeve driving gear 2-4 of the arch breaking and disturbing device 2 with the chain type driving device 4.

[0033] The utility model provides a kind of flow-aiding type powder arch breaking and discharging device, by being provided with arch breaking and disturbing device 2 in powder bin hopper 1, under the joint action of chain type driving device 4 and driving motor 5, scraper sleeve 2-2 drives disturbing scraper 2-1 to make circumferential motion along the inner wall of powder bin, and the material in powder bin is disturbed. Arch breaking and disturbing device 2 can produce extrusion from outside to inside and from top to bottom to material in the process of disturbing scraper 2-1 operation, which helps powder material to be discharged from the discharge port at the bottom of powder bin hopper 1. It can effectively break the problems such as material hardening and cavitation in powder bin, realize smooth discharging, and avoid the problem of mechanical scraper fracture arranged on the arch breaking shaft in mechanical scraper arch breaking form, to ensure stable conveying and transfer of solid material.

Claims

1. A flow-assisted arch-breaking and powder-discharging device, characterized in that, It comprises an arch breaking disturbance device (2), a feeding box (3), a chain driving device (4) and a driving motor (5). The feeding box (3) is installed at the discharge flange below the powder bin hopper (1), and the chain driving device (4) and the driving motor (5) are installed on the side wall of the feeding box (3). The feeding box (3) is composed of an upper flange (3-1), a lower flange (3-2), a cylinder (3-3) and a clamping groove (3-4). The arch breaking disturbance device (2) comprises a disturbance blade (2-1) and a blade sleeve (2-2), the disturbance blade (2-1) is arranged inside the powder bin hopper (1) and closely contacts the inner wall of the powder bin hopper (1), the blade sleeve (2-2) is arranged inside the feeding box (3) and is rigidly connected with the disturbance blade (2-1), a sleeve seal (2-3) is arranged on the outer wall of the blade sleeve (2-2) on the upper side along a circle to seal the gap between the arch breaking disturbance device (2) and the feeding box (3) to prevent the powder from entering the chain driving device (4) when the arch breaking disturbance device (2) rotates, a sleeve driving gear (2-4) is arranged on the outer wall of the blade sleeve (2-2) on the lower side along a circle, the sleeve driving gear (2-4) is installed inside the clamping groove (3-4), under the joint action of the chain driving device (4) and the driving motor (5), the blade sleeve (2-2) drives the disturbance blade (2-1) to move along the inner wall of the powder bin hopper (1) along a circle to disturb the material in the powder bin hopper (1).

2. The flow-assisted arch-breaking and powder- discharging device of claim 1, wherein, The driving motor (5) is installed on the side wall of the feeding box (3) and is connected with the disturbance blade (2-1) through the chain driving device (4).

3. The flow-assisted arch-breaking and powder- discharging device of claim 1, wherein, The gap between the blade sleeve (2-2) and the feeding box (3) is sealed by a rubber brush to prevent the material from entering the chain driving device (4) when the disturbance blade (2-1) rotates.

4. The flow-assisted arch-breaking and powder- discharging device of claim 1, wherein, The bottom of the feeding box (3) is a flange interface connected with a subsequent powder conveying device, the material stored in the powder bin hopper is continuously conveyed to the subsequent powder conveying device after being disturbed by the disturbance blade (2-1) to realize normal transfer of the material.

5. The flow-assisted arch-breaking and powder- discharging device of claim 1, wherein, The upper flange (3-1) of the feeding box is connected with the powder bin hopper (1), the lower flange (2-2) is installed with a gate valve to completely cut off the material in the powder bin hopper (1) when the subsequent powder conveying device is maintained.

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