CN-224211987-U - Ultra-high molecular weight polyethylene powder additive adding device

CN224211987UCN 224211987 UCN224211987 UCN 224211987UCN-224211987-U

Abstract

The utility model provides an ultra-high molecular weight polyethylene powder additive adding device which comprises an exhaust fan, an additive feeding hopper, an additive storage bin, a weight loss scale and a powder rotary valve, wherein the powder additive is added through a feeding hole in the upper part of the additive feeding hopper, an exhaust hole is formed in the top of the additive feeding hopper, the exhaust fan is arranged on the side of the additive feeding hopper, the exhaust fan is opened during feeding to prevent the powder additive from flying out, the pumped gas is discharged through the exhaust fan, the powder additive enters the additive storage bin through a bottom pipeline of the additive feeding hopper by means of gravity flow, the powder additive enters the weight loss scale through the bottom pipeline of the additive storage bin, the adding amount of the powder additive is measured through the weight loss scale and is conveyed to the rotary valve through a blanking screw rod, and the powder additive is added into an ultra-high molecular weight polyethylene powder pneumatic conveying system pipeline from the bottom of the rotary valve, so that the powder additive and the ultra-high molecular weight polyethylene powder are fully mixed.

Inventors

HAN SONGTAO
LIU ZHONGQUAN
FU XU
SUN ZEYU
DING DONG
ZHANG HONGBO
FAN SHAOJIE

Assignees

北方华锦化学工业股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250527

Claims (8)

1. The ultra-high molecular weight polyethylene powder additive adding device is characterized by comprising an exhaust fan, an additive feeding hopper, an additive storage bin, a weightlessness scale and a powder rotary valve, The powder additive is added through a feeding port at the upper part of an additive feeding hopper, an exhaust port is arranged at the top of the additive feeding hopper, an exhaust fan is arranged at the side of the additive feeding hopper, the exhaust fan is opened during feeding to prevent the powder additive from flying out, the pumped gas is discharged through the exhaust fan, the powder additive enters an additive storage bin through a bottom pipeline of the additive feeding hopper by means of gravity flow, the powder additive enters a powder weightless scale through a bottom pipeline of the additive storage bin, the adding amount of the powder additive is metered through the powder weightless scale and is conveyed to a rotary valve through a blanking screw rod, and the powder additive is added into an ultra-high molecular weight polyethylene powder air conveying system pipeline from the bottom of the rotary valve to ensure that the powder additive and the ultra-high molecular weight polyethylene powder are fully mixed.
2. The ultra-high molecular weight polyethylene powder additive adding device according to claim 1, wherein a dustproof filter bag is arranged at the joint of the exhaust port and the pipeline of the exhaust fan.
3. The ultra-high molecular weight polyethylene powder additive adding device according to claim 1, wherein a dust-proof filter is arranged at the top of the additive storage bin for preventing powder additive from scattering during the discharging process to cause overflow to the outside of the container.
4. The ultra-high molecular weight polyethylene powder additive adding device according to claim 1, wherein a gate valve is arranged at the bottom of the additive feeding hopper.
5. The ultra-high molecular weight polyethylene powder additive adding device according to claim 1, wherein a hand hole is provided at the bottom of the additive storage bin.
6. The ultra-high molecular weight polyethylene powder additive feeding apparatus according to claim 1, wherein the rotary valve is provided at an upper portion thereof with a rotary valve exhaust line returning to the additive storage bin.
7. The ultra-high molecular weight polyethylene powder additive feeding apparatus according to claim 1, wherein the additive feeding hopper is made of stainless steel.
8. The ultra-high molecular weight polyethylene powder additive feeding apparatus according to claim 1, wherein the additive storage bin is made of stainless steel.

Description

Ultra-high molecular weight polyethylene powder additive adding device Technical Field The utility model belongs to the technical field of high polymer material production, and particularly relates to an ultrahigh molecular weight polyethylene powder additive adding device. Background Ultra High Molecular Weight Polyethylene (UHMWPE) is an engineering plastic of linear structure with excellent overall properties. The wear resistance of UHMWPE is several times higher than that of carbon steel and brass, and its wear resistance is tens times higher than that of common polyethylene, and its friction coefficient is smaller than that of other engineering plastics. UHMWPE also has excellent water resistance, impact resistance, chemical resistance, low temperature resistance, good non-tackiness, no toxicity, excellent electrical insulation performance and the like, and has wide application fields. Because UHMWPE has extremely high molecular weight (molecular weight is more than 100 w), the processability of the product is very poor, the demolding performance is very poor in the downstream product manufacturing process, especially the ultra-high molecular weight polyethylene cannot be pelletized and stored like common polyethylene and exists in the form of powder, but chemical additives such as an antioxidant, a light stabilizer and the like cannot be added into the powder, so that the ultra-high molecular weight polyethylene powder can generate chemical reactions such as degradation and the like under the conditions of light and heat, and the physical properties of the ultra-high molecular weight polyethylene product are greatly reduced. Disclosure of utility model First, the technical problem to be solved The utility model provides an additive adding device for ultra-high molecular weight polyethylene powder, which aims to solve the technical problem of adding an additive in the preparation process of ultra-high molecular weight polyethylene powder. (II) technical scheme In order to solve the technical problems, the utility model provides an ultra-high molecular weight polyethylene powder additive adding device, which comprises an exhaust fan, an additive feeding hopper, an additive storage bin, a weightlessness scale and a powder rotary valve, wherein the powder additive is added through a feeding hole in the upper part of the additive feeding hopper, an exhaust port is arranged at the top of the additive feeding hopper, the exhaust fan is arranged on the side of the additive feeding hopper, the exhaust fan is opened during feeding to prevent the powder additive from flying out, the pumped gas is discharged through the exhaust fan, the powder additive enters an additive storage bin through a bottom pipeline of the additive feeding hopper by means of gravity flow, the powder additive enters the weightlessness scale through the bottom pipeline of the additive storage bin, the powder additive is metered by the powder weightlessness scale and is conveyed to the rotary valve through a blanking screw, the powder additive is added into a pipeline of the ultra-high molecular weight polyethylene powder air conveying system through the bottom of the rotary valve, and the powder additive and the ultra-high molecular weight polyethylene powder are fully mixed. Further, a dustproof filter bag is arranged at the joint of the exhaust port and the pipeline of the exhaust fan. Further, the top of the additive storage bin is provided with a dustproof filter for preventing powder additives from scattering in the blanking process to cause overflowing to the outside of the container. Further, a gate valve is arranged at the bottom of the additive charging hopper. Further, a hand hole is arranged at the bottom of the additive storage bin. Further, the upper portion of the rotary valve is provided with a rotary valve vent line that returns to the additive storage bin. Further, the additive feed hopper is made of stainless steel. Further, the additive storage bin is made of stainless steel. (III) beneficial effects The utility model provides an ultra-high molecular weight polyethylene powder additive adding device which comprises an exhaust fan, an additive feeding hopper, an additive storage bin, a weight loss scale and a powder rotary valve, wherein the powder additive is added through a feeding hole in the upper part of the additive feeding hopper, an exhaust hole is formed in the top of the additive feeding hopper, the exhaust fan is arranged on the side of the additive feeding hopper, the exhaust fan is opened during feeding to prevent the powder additive from flying out, the pumped gas is discharged through the exhaust fan, the powder additive enters the additive storage bin through a bottom pipeline of the additive feeding hopper by means of gravity flow, the powder additive enters the weight loss scale through the bottom pipeline of the additive storage bin, the adding amount of the powder additive is measured through the weigh