CN201848181U - Self-cleaning overflow weir device - Google Patents

Abstract

A self-cleaning overflow weir device, which is uniformly arranged at multiple points in the overflow weir tank and adopts a liquid supply nozzle with agitation function, so that the agitation is sufficient, the precipitation of liquid and solid phases is avoided, and the problem of possible sludge deposition is eliminated. Avoid the failure of the overflow weir and maintain the long-term stable operation of the overflow weir. A triangular slot-shaped opening is set at the overflow opening of the overflow weir and a flat wave plate is set under the triangular slot opening of the overflow weir to reduce the adverse effects on the overflow distribution caused by the change of the level of the overflow weir and reduce the liquid The impact of fluctuations on the stability of overflow is used to stabilize the amplitude of the liquid and improve the stability of the liquid supply. The utility model can significantly improve the reliability of the work of the overflow weir, and at the same time, can avoid the sedimentation of the overflow weir groove, and overcome the failure of the overflow weir due to the accumulation of the sediment; it is mainly used in a vertical pipe washing machine The reverse nozzle protection of the device can also be applied to other similar equipment that requires overflow weir protection.

Description

Self-cleaning overflow weir device

technical field

The utility model relates to an overflow weir device, in particular to an overflow weir device for a reverse nozzle pipe of a dynamic wave scrubber.

Background technique

The power wave scrubber is a kind of industrial flue gas purification and washing equipment abroad. The working principle of the scrubber is that through the foam column of washing liquid formed in the reverse nozzle, the washing liquid flows countercurrently from bottom to top, and industrial smoke enters the scrubber from top to bottom, and the gas-liquid two-phase high-speed reverse collision achieves cooling and dust removal the goal of. In the past ten years, more and more applications have been obtained in the country through assimilation of imported technologies and equipment. The overflow weir of the reverse nozzle pipe of the dynamic wave scrubber is mainly used to prevent the damage of the high temperature flue gas to the reverse nozzle wall, and at the same time, it can also avoid the fouling of the smoke and dust on the inner wall of the reverse nozzle. In foreign power wave scrubbers (also known as "foam column scrubbers"), the reverse nozzles are mostly made of high alloy, which has high reliability and high cost. Non-metallic polymer materials are used for domestic digestion and application, which greatly reduces the cost of equipment (only one tenth of that of high alloy materials). But on the other hand, it also increases the risk of equipment operation. There have been several burnout accidents of reverse nozzles in China. There are two reasons for the accident: one is that the overflow weir uses washing circulating fluid, and the solid phase deposits in the overflow weir tank, causing part of the overflow surface to stop flow, resulting in partial burnout of the reverse nozzle. Although it was later improved and the sewage outlet was installed at the bottom of the overflow weir groove, it still could not solve the clogging problem well; secondly, the relatively simple overflow weir protection device of the reverse nozzle had poor adaptability, and when the level of the overflow weir changed, the The liquid distribution is uneven, and the polymer material is burned by the high flue gas temperature.

Contents of the invention

The purpose of this utility model is to provide a self-cleaning overflow weir device, which overcomes the shortcomings of the original overflow weir device that easily causes partial burnout of the reverse nozzle, and adapts to the requirement of using relatively turbid circulating fluid as the overflow liquid, which is economical and reliable protection overflow weir.

A self-cleaning overflow weir device, characterized in that: liquid supply nozzles with agitation function are uniformly arranged at multiple points in the overflow weir tank, so that the agitation is sufficient, the precipitation of liquid and solid phases is avoided, and the possible sludge is eliminated The problem of deposition can avoid the failure of the overflow weir and maintain the long-term stable operation of the overflow weir.

As a further improvement of the utility model, the self-cleaning overflow weir device is equipped with a triangular groove-shaped opening at the overflow outlet of the overflow weir to reduce the adverse effects on overflow distribution caused by changes in the level of the overflow weir, It can significantly improve the liquid supply capacity when the level of the overflow surface changes.

A self-cleaning overflow weir device. In order to reduce the influence of liquid fluctuations on the overflow stability, the utility model is further improved. A flat wave plate is arranged below the overflow weir triangular groove to stabilize the amplitude of the liquid and improve The stability of the liquid supply.

The utility model has the advantages of adopting the liquid supply method with internal liquid stirring, eliminating the possible problem of sludge deposition and avoiding the failure of the overflow weir. On the overflow surface, the triangular opening auxiliary overflow method and the flat wave plate can effectively improve the stability and uniformity of the overflow weir liquid supply. After taking these measures and methods, the working reliability of the overflow weir can be fundamentally improved, and the reliability of the non-metallic polymer material used as the scrubber reverse nozzle can be greatly improved. The main problems encountered in the localization of imported technology and equipment have been solved.

At the same time, these measures and methods also have universal significance and can be extended and applied to similar devices and equipment that require overflow protection.

Description of drawings

Fig. 1 is the structural representation of the utility model;

FIG. 2 is a schematic top view of the structure in FIG. 1 .

Detailed ways

The embodiment of the utility model structure is described in detail below in conjunction with accompanying drawing:

In the self-cleaning overflow weir device of the utility model, several liquid inlet nozzles are evenly arranged horizontally in the overflow tank, and liquid supply nozzles with stirring function are installed on the nozzles. The nozzle with stirring function can be purchased in the market, or it can be specially designed and manufactured according to the requirements of the overflow weir. It can prevent the deposition of solid phase in the overflow weir. A zigzag triangular overflow opening is provided on the overflow surface of the overflow opening. Since the top of the opened triangular overflow may be exposed to high temperature, special materials (such as high-purity graphite, Hastelloy, etc.) can be used to manufacture the overflow nipple. There are many angular horizontal grooves at the lower end of the short joint of the overflow outlet, which facilitates the diffusion and homogenization of the concentrated overflow at the tip of the triangular overflow outlet. Below the triangular opening of the overflow plane, a horizontal smoothing plate in the form of a narrow wing is arranged, and its function is to calm the excessive fluctuation of the liquid level caused by stirring.

The above content is a further detailed description of the utility model in combination with specific preferred embodiments, and it cannot be assumed that the specific implementation of the utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the utility model belongs, those who make several equivalent substitutions or obvious modifications without departing from the concept of the utility model, and have the same performance or use, shall be deemed to belong to the submitted utility model. The scope of protection determined by the claims.

Claims (3)

1. A self-cleaning overflow weir device, characterized in that: in the overflow weir groove, multi-point evenly set the liquid supply nozzle with stirring function. 2. The self-cleaning overflow weir device according to claim 1, characterized in that: a triangular slot-shaped opening is provided at the overflow outlet of the overflow weir. 3. The self-cleaning overflow weir device according to claim 1 or 2, characterized in that: a flat wave plate is arranged below the triangular groove opening of the overflow weir.

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