CN-122009837-A - High-temperature powder reverse-pressure air locking discharge valve and control method

Abstract

The invention discloses a high-temperature powder reverse-pressure air locking discharge valve and a control method, and relates to the technical field of raw material conveying, and the high-temperature powder reverse-pressure air locking discharge valve comprises a pipeline which is arranged at a set included angle with the ground, wherein the upper end of the pipeline is a raw material inlet end, a valve group is arranged in the pipeline, the valve group comprises a plurality of valve structures which are sequentially arranged along the axis direction of the pipeline, and a temporary storage channel is formed between every two adjacent valve structures; the valve group has a first working condition and a second working condition, when the valve group is in the first working condition, all the valve structures are in a closed state, and when the valve group is in the second working condition, at least one valve structure is in an open state, and at least one valve structure is in a closed state. Through the structural design, raw materials can be transported from the low-pressure supply side to the high-pressure transfer side without pressure compensation, and the valve body is simple in design and relatively low in cost and can be assembled only by a pipeline and a corresponding valve structure.

Inventors

• DAI JUNKANG
• YANG LISHAN
• ZHANG KUN
• ZHAN YILONG
• He Weishuai
• GAO TING
• WANG LINGRUI
• MA JUN
• CAI YULIANG
• HONG QI
• CHEN ZHENGWEN
• LIU MINGTAO
• WANG JIAJIA
• TANG LIANG
• LI XIAOXIANG
• LIU QIXUAN

Assignees

• 中国中材国际工程股份有限公司
• 合肥水泥研究设计院有限公司
• 江苏凯希盟科技有限公司
• 天山材料股份有限公司

Dates

Publication Date

20260512

Application Date

20260331

Claims (10)

1. 1. The high-temperature powder reverse-pressure air locking discharge valve is characterized by comprising a pipeline (1) which is arranged at a preset included angle with the ground, wherein the upper end of the pipeline (1) is a raw material inlet end, a valve group is arranged in the pipeline (1), the valve group comprises a plurality of valve structures (3) which are sequentially arranged along the axial direction of the pipeline (1), and a temporary storage channel (2) is formed between every two adjacent valve structures (3); The valve group has a first working condition and a second working condition; when the valve group is in a first working condition, all the valve structures (3) are in a closed state; When the valve group is in the second working condition, at least one valve structure (3) is in an open state, and at least one valve structure (3) is in a closed state.
2. 2. The high-temperature powder reverse pressure air locking discharge valve according to claim 1, wherein the pipeline (1) comprises a valve mounting pipe (4) and an intermediate pipe (5), the valve mounting pipe (4) and the intermediate pipe (5) are alternately arranged in sequence along the axis direction of the pipeline (1), and the valve mounting pipe (4) is in sealing connection with the corresponding intermediate pipe (5).
3. 3. The high-temperature powder reverse-pressure air locking and discharging valve according to claim 2, wherein the valve structure (3) comprises a power source arranged outside the valve mounting tube (4) and an air locking valve (7) correspondingly arranged in the valve mounting tube (4), one end of an inner rotating shaft (16) of the air locking valve (7) penetrates through the wall surface of the valve mounting tube (4) and extends to the outer side of the wall surface, and an output end of the power source is connected with an extending end of the rotating shaft (16) on the corresponding air locking valve (7).
4. 4. A high temperature powder reverse pressure air locking discharge valve according to claim 3, characterized in that the power source comprises a shell (8) fixed on the valve mounting tube (4), the lower part of the shell (8) is rotationally connected with a cylinder (9), the output end of the cylinder (9) is rotationally connected with a crank (10), and the other end of the crank (10) is fixedly connected with the extending end of the rotating shaft (16) on the corresponding air locking valve (7).
5. 5. The high-temperature powder reverse-pressure air locking and discharging valve according to claim 3 or 4, wherein through holes are formed in corresponding positions of the valve mounting pipes (4), rotating shafts (16) on corresponding air locking valves (7) penetrate through the through holes, sleeves (11) are arranged in the through holes, sealing boxes (12) are arranged in the sleeves (11), pressing covers (13) are arranged in the sealing boxes (12), the sleeves (11) and the sealing boxes (12) are fixed on the wall surfaces of the corresponding valve mounting pipes (4) through fasteners, the pressing covers (13) are fixed on the sealing boxes (12) through fasteners, and the sealing boxes (12) and the pressing covers (13) are in sealing connection with the rotating shafts (16) on the corresponding air locking valves (7).
6. 6. The high-temperature powder reverse-pressure air-locking discharge valve according to claim 5, wherein the valve mounting tube (4) is square in inner cross section along the length direction.
7. 7. The high-temperature powder reverse-pressure air locking discharge valve according to claim 2, wherein square-change circular pipelines (14) are connected on valve mounting pipes (4) at two ends of the pipeline (1) in a sealing manner.
8. 8. A high temperature powder reverse pressure air locking discharge valve according to claim 3, characterized in that the air locking valve (7) comprises a valve plate (15) fixed on a rotating shaft (16), the valve plate (15) is positioned in the pipeline (1) and is used for sealing one end of the corresponding temporary storage channel (2), and a balancing weight (6) is fixed at one end of the rotating shaft (16) far away from the power source.
9. 9. The high-temperature powder reverse-pressure air locking discharge valve according to claim 8, wherein the inner valve plate (15) and the rotating shaft (16) of the air locking valve (7) are made of heat-resistant steel.
10. 10. A control method of a high-temperature powder reverse-pressure air locking discharge valve adopting the high-temperature powder reverse-pressure air locking discharge valve according to any one of claims 1-9, comprising the following steps: s1, controlling at least one valve structure (3) to be in an open state, and simultaneously controlling at least one valve structure (3) to be in a closed state.

Description

High-temperature powder reverse-pressure air locking discharge valve and control method Technical Field The invention relates to the technical field of raw material conveying, in particular to a high-temperature powder reverse-pressure air locking discharge valve and a control method. Background When the raw materials are transported, the pressure of the raw materials can be divided into three conditions according to the difference of the pressure of a transfer side and a supply side, wherein the pressure of the transfer side is lower than that of the supply side, the pressure of the transfer side is equal to that of the supply side, the pressure of the transfer side is higher than that of the supply side, the conveying process of the raw materials can be realized through a common structure in the former two conditions, and the final condition can be realized through a complex structure or a step. For the case that the pressure of the transfer side is higher than that of the supply side, one common means is to perform additional pressurization treatment on the material on the supply side to make the material on the supply side even with the pressure of the supply side so as to realize normal conveying of the material, and the means needs to supplement pressurization equipment and provide an environment in which the material can be pressurized, and when the pressure difference is too large, additional requirements are put on the pressurization equipment and the pressurization means, so that the additional cost of the means is high, and the structural design is complex. Disclosure of Invention The invention aims to solve the problems that the design and manufacturing structure of the scheme are complex and the cost is high when the existing raw materials are transported from the side with low pressure to the side with high pressure. In order to solve the problems, the invention provides a high-temperature powder reverse-pressure air locking discharge valve, which comprises a pipeline which is arranged at a set included angle with the ground, wherein the upper end of the pipeline is a raw material inlet end, a valve group is arranged in the pipeline, the valve group comprises a plurality of valve structures which are sequentially arranged along the axis direction of the pipeline, and a temporary storage channel is formed between every two adjacent valve structures; The valve group has a first working condition and a second working condition; when the valve group is in the first working condition, all the valve structures are in a closed state; when the valve group is in the second working condition, at least one valve structure is in an open state, and at least one valve structure is in a closed state. Compared with the prior art, the high-temperature powder reverse-pressure air locking discharge valve provided by the invention has the following beneficial effects: Taking three valve structures on a pipeline as an example, the three valve structures are sequentially set as a1, a2 and a3 from top to bottom, two temporary storage channels are arranged in the pipeline, the temporary storage channel at the upper part is set as b1, and the temporary storage channel at the lower part is set as b2; one of the second working conditions is to open the valve structure nearest to the inlet end of the raw material, namely a1, so that the raw material enters b1 from the low-pressure supply side through a1, then close a1, open a2 again, enable b1 and b2 to be communicated, and enable the raw material in b1 to enter b2, close a2, open a3, enable b2 to be communicated with the transfer side pipeline, enable the raw material in b2 to be discharged from b2, and repeat the steps until the raw material is completely discharged. Through the structural design, raw materials can be transported from the low-pressure supply side to the high-pressure transfer side without pressure compensation, and the valve body is simple in design and relatively low in cost and can be assembled only by a pipeline and a corresponding valve structure. The pipeline comprises a valve installation pipe and a middle pipe, wherein the valve installation pipe and the middle pipe are sequentially and alternately arranged along the axial direction of the pipeline, and the valve installation pipe is in sealing connection with the corresponding middle pipe. The valve structure comprises a power source arranged outside the valve mounting tube and a locking air valve correspondingly arranged in the valve mounting tube, wherein one end of a rotating shaft in the locking air valve penetrates through the wall surface of the valve mounting tube and extends to the outer side of the valve mounting tube, and the output end of the power source is connected with the extending end of the rotating shaft on the corresponding locking air valve. The invention further adopts the scheme that the power source comprises a shell fixed on the valve mounting pipe, an air cylinder is r