High performance impact angle valve
An impact angle, high-performance technology, used in the field of alumina slurry conveying pipelines and globe valves, can solve the problems of sealing packing wear, easy crystallization, affecting the sealing performance of the middle cavity, etc., and achieves small wear, light opening, and good sealing performance. Effect
Active Publication Date: 2017-08-15
ZHEJIANG BETHEL TECH CO LTD
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Problems solved by technology
Due to the characteristics of high wear and easy crystallization of alumina raw pulp, and the use environment has relatively large wind, sand and dust pollution
The disadvantages of the existing products are: when the alumina raw slurry crystallizes on the valve disc and the valve seat, the handwheel operation is very heavy at the moment of opening, and even the handwheel cannot be turned and cannot be opened; the valve disc adheres to the valve stem during opening and closing. Wind sand and dust will enter the packing, which will wear the sealing packing and affect the sealing performance of the middle cavity
Method used
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Embodiment Construction
[0011] Such as figure 1 The high-performance impact angle valve shown includes a valve body 1, a valve seat 2, a valve disc 3, a valve stem 4, a bracket 10, and a transmission mechanism. The bevel gear 13 and the bevel gear disc 12 are composed of a sealing packing 5 installed between the valve body 1 and the valve stem 4. A butterfly spring is installed between the sealing packing 5 and the packing cover 6 to automatically compensate the wear of the sealing packing 5. The lower end of the valve stem 4 is fixedly connected with the valve disc 3, and the upper part of the valve stem 4 is threaded with the inner hole of the valve stem nut 15. The nut 15 is installed on the bracket 10 through the bearing 11. A radial step is formed between the outer cylindrical surface of the valve stem nut 15 and the shaft hole of the bevel gear disc 12. The bevel gear disc 12 is pressed into the bracket 10 by the valve stem nut 15. In the upper end surface, rotating bearings are respectively i...
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The invention relates to a high-performance impact angle valve which comprises a valve body, a valve seat, a valve clack, a valve stem, a bracket and a transmission mechanism, wherein an inlet and an outlet of the valve body form a right angle structure; the transmission mechanism is composed of a handwheel, a bevel gear and a bevel gear plate; the transmission mechanism adopts an energy accumulation impact structure: when the valve clack and valve seat are in the sealed state, a cambered clearance is arranged between the radial step of the outer cylindrical surface of the valve stem nut and the radial step of the bevel gear plate; and the bracket adopts a closed structure: the bracket, upper cover and valve body constitute a sealed chamber. In the rotation opening early state of the handwheel, the bevel gear plate has an idle rotation distance, and impacts the valve stem nut after the rotation speed of the bevel gear plate is enhanced, thereby providing higher valve opening impulse for the valve stem nut; and the bracket adopts the closed structure, thereby preventing sand dust from being attached to the valve stem. The high-performance impact angle valve has the characteristics of light opening, low seal packing abrasion, favorable sealing property and the like, and is suitable for aluminum oxide primary pulp transmission pipelines.
Description
technical field [0001] The invention belongs to the field of valves, in particular to a stop valve. The invention is applicable to the pipeline for conveying alumina raw slurry. Background technique [0002] Globe valves are the most commonly used control valves in mine alumina raw slurry pipelines. Because the alumina raw pulp has the characteristics of high wear and easy crystallization, and the use environment has relatively large wind, sand and dust pollution. The disadvantages of the existing products are: when the alumina raw slurry crystallizes on the valve disc and the valve seat, the hand wheel operation is very heavy at the moment of opening, and even the hand wheel cannot be turned and cannot be opened; the valve disc adheres to the valve stem during opening and closing. Wind sand and dust will enter the packing, which will wear the sealing packing and affect the sealing performance of the middle cavity. Contents of the invention [0003] The object of the pr...
Claims
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IPC IPC(8): F16K1/34F16K1/32F16K31/53
CPCF16K1/32F16K1/34F16K31/53
Inventor 胡道忠金克雨缑志奇章跑
Owner ZHEJIANG BETHEL TECH CO LTD