Mechanical seal structure of circulating pump
A circulating pump and mechanical seal technology, applied to pumps, parts of pumping devices for elastic fluids, pump components, etc., can solve problems such as seal failure and easy leakage, to prevent solidification, improve sealing effect, and avoid leakage Effect
Pending Publication Date: 2018-11-13
四川天宇油脂化学有限公司
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Problems solved by technology
[0004] Aiming at the deficiencies in the prior art, the present invention provides a mechanical seal structure of a circulating pump, which solves the problems that the existing mechanical seal structure easily causes seal failure and leakage
Method used
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Embodiment Construction
[0014] The present invention will be further described below in conjunction with the accompanying drawings.
[0015] Such as Figure 1 ~ Figure 3 As shown, the mechanical seal structure of a circulating pump according to the present invention includes a mechanical casing 1 and a rotating shaft 2, wherein the mechanical casing 1 and the rotating shaft 2 are both parts of the circulating pump, and the inside of the circulating pump and the rotating shaft 2 are sealed by the mechanical sealing mechanism. The rotating shaft 2 is sealed so that the internal material of the circulating pump can still be kept from leaking when the motor is driven to rotate. The cooling shell 3 is fastened on the machine casing 1 by screws, and the sealing plate 4 is fastened on the cooling shell 3 by screws. In order to ensure the stability of the installation, at least 4 screws are used, and they are evenly distributed along the circumferential direction, which can keep the machine The contact plan...
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The invention discloses a mechanical seal structure of a circulating pump. The mechanical seal structure comprises a mechanical seal shell and a rotary shaft; cooling shells are fastened to the mechanical seal shell through screws, and sealing plates are fastened to the cooling shells through screw; a first sealing ring is arranged between the cooling shells, and a second sealing ring is arrangedbetween the cooling shells and the sealing plates; the rotary shaft sequentially penetrates through the mechanical seal shell, the cooling shells and the sealing plates, and the portion, located in the mechanical seal shell, of the rotary shaft is provided with a first mechanical seal assembly used for preventing the mechanical seal shell from communicating with the cooling shells; the portion, located in the cooling shells, of the rotary shaft is provided with a second mechanical seal assembly used for preventing leakage of the interiors of the cooling shells; and the cooling shells are provided with threaded inlets and threaded outlets, and the threaded inlets and the threaded outlets are symmetrical relative to the rotary shaft. The problems that an existing mechanical seal structure isprone to causing sealing failure, and leakage is likely to occur are solved.
Description
technical field [0001] The invention relates to the field of circulating pumps for fatty nitrile reactors, in particular to a mechanical seal structure for circulating pumps. Background technique [0002] P1901A is a circulating pump for aliphatic nitrile reactors, the production conditions are harsh, the maximum working temperature of the material is 320°C, the freezing point of the material is 80°C, the working pressure is 0.3-0.4Mpa, and the medium of the material is fatty acid (saturated stearic acid, tallow, etc.) + solid particles Catalyst Zinc Oxide, Aluminum Oxide + Ammonia. The type of P1901A circulation pump is IH type chemical corrosion-resistant centrifugal pump. The inter-shaft seal of the current equipment adopts built-in unbalanced single-end bellows mechanical seal. [0003] Under the high temperature environment of 320 ℃, the bellows machine seal bellows will produce high temperature creep and fracture, and the seal will fail, resulting in frequent leakage ...
Claims
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IPC IPC(8): F04D29/12F04D29/58
CPCF04D29/126F04D29/5886
Inventor 邹华蒋隆书任开勇
Owner 四川天宇油脂化学有限公司