CN-121798522-B - Mixed conveyor of sponge abrasive

CN121798522BCN 121798522 BCN121798522 BCN 121798522BCN-121798522-B

Abstract

The invention relates to the technical field of conveying equipment, in particular to a sponge abrasive mixing and conveying device; the device can improve distribution uniformity of sponge abrasive particles in a storage tank and effectively ensure surface sand blasting quality of a workpiece, and comprises the storage tank, a screw conveyor and an air injection pipeline, wherein the screw conveyor and the air injection pipeline are arranged at the bottom of the storage tank, a feeding end of the screw conveyor is communicated with the bottom of the storage tank, a discharging end of the screw conveyor is communicated with the inside of the air injection pipeline, the device also comprises a lifting polymerization stirring mechanism arranged in the storage tank, the lifting polymerization stirring mechanism comprises a frame body fixedly arranged in the storage tank, a stirring shaft rotatably arranged on the frame body, a driver for providing power for rotation of the stirring shaft, a flexible stirrer fixedly arranged on the stirring shaft, a binding ring and a lifting driving mechanism for driving the binding ring to move up and down, and the flexible stirrer comprises a transverse frame fixedly connected with the upper part of the stirring shaft, and one ends of the flexible stirring members are connected with positions, far away from the stirring shaft, on the transverse frame.

Inventors

SUN JIANGUO
FU XIULI
JIANG ZHENFENG
ZHAO SONGQIAO
ZHANG FENGWEI
WANG XINBO
TAN YONGJUN
Tang Jiazhuang

Assignees

淄博大亚金属科技股份有限公司
山东大亚机械科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260311

Claims (8)

1. The mixing and conveying device for the sponge abrasive comprises a storage tank (1), a screw conveyor (2) and an air injection pipeline (3), wherein the screw conveyor (2) is arranged at the bottom of the storage tank (1), the feeding end of the screw conveyor (2) is communicated with the bottom of the storage tank (1), the discharging end of the screw conveyor (2) is communicated with the inside of the air injection pipeline (3), the mixing and conveying device is characterized by further comprising a lifting and polymerizing stirring mechanism arranged in the storage tank (1), the lifting and polymerizing stirring mechanism comprises a frame body (4) fixedly arranged in the storage tank (1), a stirring shaft (5) rotatably arranged on the frame body (4), a driver (6) for providing power for the rotation of the stirring shaft (5), a flexible stirrer fixedly arranged on the stirring shaft (5), a beam ring (7) and a lifting driving mechanism for driving the beam ring (7) to move up and down, the flexible stirrer comprises a transverse frame (8) fixedly connected with the upper part of the stirring shaft (5) and a plurality of flexible stirring pieces (9), one end of each flexible stirring piece (9) is connected with the upper part of the transverse frame (8) far away from the stirring shaft (5), and the other end of each flexible stirring piece (9) penetrates through the inner stirring piece (9) and the lower part of the flexible stirring piece (5) and penetrates through the stirring shaft (7); The lifting driving mechanism comprises an air inlet vertical pipe (10) fixedly installed above the middle part in the storage tank (1), a communicating pipeline (11), a sleeve (12) which is installed on the air inlet vertical pipe (10) in a vertical sliding mode and is matched with the outer wall of the air inlet vertical pipe (10), a plurality of connecting frames (13) and a counterweight cap (14) installed at the top of the air inlet vertical pipe (10), one ends of the connecting frames (13) are connected with the outer wall of the binding ring (7), the other ends of the connecting frames (13) are connected with the air inlet vertical pipe (10), the air inlet vertical pipe (10) and the air injection pipeline (3) are communicated through the communicating pipeline (11), and a three-way switching valve (15) is installed on the communicating pipeline (11).
2. The sponge abrasive mixing and conveying device according to claim 1, further comprising an air duct (16), wherein a hollow annular channel (17) is arranged in the bundle ring (7), an air injection hole (18) communicated with the hollow annular channel (17) is formed in the top of the bundle ring (7), a hollow air inlet channel communicated with the hollow annular channel (17) is formed in the connecting frame (13), one end of the air duct (16) is communicated with the hollow air inlet channel, the other end of the air duct (16) penetrates through the counterweight cap (14) and extends into the upper portion in the sleeve (12) from the top of the counterweight cap (14), and an opening and closing valve (19) is arranged on the air duct (16).
3. The sponge abrasive mixing and conveying device according to claim 1 or 2, wherein the counterweight cap (14) is in a conical table shape, a concave hopper (20) is arranged at the top of the storage tank (1), a feeding hole (21) which is matched with the counterweight cap (14) is formed in the concave hopper (20), the sponge abrasive mixing and conveying device further comprises a pressurizing pipeline (22) which is communicated with the upper inner part of the storage tank (1), and a sealing ring (23) is embedded and installed at the bottom of the feeding hole (21).
4. A sponge abrasive mixing and conveying device according to claim 3, further comprising an opening collecting cylinder (24) fixedly mounted on the sleeve (12) and positioned below the counterweight cap (14), an air distribution ring pipe (25) fixedly mounted at the outer wall of the opening collecting cylinder (24), a plurality of air distribution pipes (26) communicated with the inside of the air distribution ring pipe (25) and a flexible connecting pipe (27), wherein the air distribution ring pipe (25) is communicated with the pressurizing pipeline (22) through the flexible connecting pipe (27), and an air nozzle (28) facing between the counterweight cap (14) and the opening collecting cylinder (24) is mounted on the air distribution pipe (26).
5. The sponge abrasive mixing and conveying device according to claim 1, further comprising a discharge pipe (29) mounted on the storage tank (1), wherein an input end of the discharge pipe (29) extends into the inner bottom of the open collection cylinder (24), and an inner bottom wall of the open collection cylinder (24) is inclined downwards to one side of the discharge pipe (29).
6. The sponge abrasive mixing and conveying device according to claim 1, wherein the flexible stirring element (9) is a stainless steel metal hose.
7. The sponge abrasive mixing and conveying device according to claim 1, wherein the bottom of the stirring shaft (5) is provided with a stirring plate (30) extending into the discharge port at the bottom of the storage tank (1).
8. The sponge abrasive mixing and conveying device according to claim 2, characterized in that a filter block (31) for preventing sponge abrasive from entering the collar (7) is mounted at the air injection hole (18).

Description

Mixed conveyor of sponge abrasive Technical Field The invention relates to the technical field of conveying equipment, in particular to a sponge abrasive mixing and conveying device. Background The sponge abrasive sand blasting machine adopts special sponge abrasive as a jet medium, uses compressed air as power and utilizes the adsorption capacity and the cutting capacity of the sponge abrasive, thereby well solving the problems of environmental pollution, health hidden trouble, low abrasive utilization rate and the like in the traditional process. Sponge abrasive is conveyed to the spray gun through the storage tank and the screw conveyor, kinetic energy is provided for the sponge abrasive in the spray gun through an external compressed air source, and the sponge abrasive is sprayed to the surface of a workpiece under the action of pressurized air flow, so that the surface treatment of the workpiece is realized. However, the particle sizes of the sponge abrasive are different, under the traditional stirring in the storage tank, the small-particle sponge abrasive gathers towards the bottom of the storage tank, the large-particle sponge abrasive is positioned at the upper part in the storage tank, whether the distribution uniformity of the sponge abrasive in the storage and conveying system directly influences the uniformity of sprayed materials at the spray gun, and the uneven particles of the sponge abrasive cause the difference of grinding of the surface of a workpiece due to the constant high-pressure air supply flow pressure of the spray gun, so that the sand blasting quality of the surface of the workpiece is influenced. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a sponge abrasive mixing and conveying device which improves the distribution uniformity of sponge abrasive particles in a storage tank and effectively ensures the sand blasting quality of the surface of a workpiece. The invention provides a sponge abrasive mixing and conveying device which comprises a storage tank, a screw conveyor and an air injection pipeline, wherein the screw conveyor and the air injection pipeline are arranged at the bottom of the storage tank, the feeding end of the screw conveyor is communicated with the bottom of the storage tank, the discharging end of the screw conveyor is communicated with the inside of the air injection pipeline, the sponge abrasive mixing and conveying device further comprises a lifting polymerization stirring mechanism arranged in the storage tank, the lifting polymerization stirring mechanism comprises a frame body fixedly arranged in the storage tank, a stirring shaft rotatably arranged on the frame body, a driver for providing power for the rotation of the stirring shaft, a flexible stirrer fixedly arranged on the stirring shaft, a binding ring and a lifting driving mechanism for driving the binding ring to move up and down, the flexible stirrer comprises a transverse frame fixedly connected with the upper part of the stirring shaft and a plurality of flexible stirring pieces, one ends of the flexible stirring pieces are connected with the positions, far away from the stirring shaft, the other ends of the flexible stirring pieces are connected with the outer wall of the lower part of the stirring shaft, and the flexible stirring pieces penetrate through the binding ring. Further, the input end of the air injection pipeline is communicated with an external air compressor or other pressurized air flow systems, and the output end of the air injection pipeline is provided with a spray gun; the stirring device comprises a stirring shaft, a transverse frame, a plurality of flexible stirring pieces, a driver, a lifting driving mechanism, a stirring shaft, a switching valve, a pressure regulating valve, a pressure gauge and other necessary valve members, wherein the stirring shaft is driven to rotate by the driving mechanism, the transverse frame is preferably a cross frame, the stirring shaft is also driven to rotate by the stirring shaft, the stirring shaft is circumferentially uniformly distributed by the flexible stirring pieces, redundancy is reserved on the stirring shaft, the middle parts of the stirring shafts move to the side far away from the center of the stirring shaft and are close to the inner wall of a storage tank under the action of centrifugal force in the rotation process of the stirring shaft, the ring diameter of a beam ring is 1/5-1/3 of the maximum inner diameter of the storage tank, the lifting driving mechanism can adopt a telescopic cylinder and the like, the switching valve, the pressure regulating valve, the pressure gauge and other necessary valve members are arranged on an air injection pipeline to regulate the pressure and the flow of the air injection pipeline, the centrifugal force borne by the stirring shaft is larger than the self gravity of the stirring shaft and the resistance of the flexible stirring piece caused by the