Bell mouth

About: Bell mouth is a research topic. Over the lifetime, 603 publications have been published within this topic receiving 1624 citations.

Outdoor underground tap water meter chamber

Abstract: The utility model relates to a residential water meter chamber, namely tap water meters of residents are all centrally arranged in an underground well, in particular to an outdoor underground tap water meter chamber. The outdoor underground tap water meter chamber comprises a shaft pipe, a reducing pipe, a chamber pipe and a chamber base, wherein a large bell mouth and a small bell mouth are arranged on the chamber pipe; a chamber inlet pipeline is arranged in the small bell mouth; a sleeve flange is arranged in the large bell mouth, a plurality of chamber outlet service pipes are welded in the sleeve flange; and the small bell mouth and the chamber inlet pipeline as well as the large bell mouth and the sleeve flange are fixed and sealed respectively by a thermal shrinkable sleeve. The outdoor underground tap water meter chamber can prevent reverse osmosis of underground water into the chamber, and reduce pollution of the underground water to drinking water, thereby eliminating the hidden insecurity of the drinking water.

Linear type smoking machine flue gas trap strorage device

Abstract: The utility model discloses a linear type smoking machine flue gas trap strorage device, it includes the baffle that erects in the rectangular channel characterized by, the equipartition has the bell mouth on the baffle, the bell mouth tapering is 2-2.2. Owing to adopt the utility model discloses the trap strorage device of structure can make the flue gas trap placed in order on inslot bell mouth baffle, can effectively avoid obscuring of trap, and the simplified operation flow is conveniently got and put simultaneously, has saved the operating space, has improved detection efficiency. Because the bell mouth tapering is identical with flue gas trap lower surface tapering on the baffle, therefore can effectively avoid hole edge fish tail trap. Owing to set up the seal groove at the rectangular channel port, the spiral -lock forms the enclosure space after lapping in the rectangular channel, around the flue gas trap is weighed and after the flue gas entrapment, can effectively avoid the influence of air convection symmetry tuple certificate, save and operated for the upper and lower ventilation hole of flue gas trap with covering the sealed cap, guaranteed the degree of accuracy of testing result.

Expansion joint for glass steel pipeline

Abstract: The utility model belongs to the technical field of glass steel pipelines and discloses an expansion joint for a glass steel pipeline. The expansion joint for the glass steel pipeline is mainly technically characterized by comprising a socket section, a bell mouth section, position-limiting flange plates which are respectively arranged on the socket section and the bell mouth section, and a position-limiting screw rod for connecting the two position-limiting flange plates, wherein cylinder sections are arranged at the front end parts of the socket section and the bell mouth section. The expansion joint for the glass steel pipeline has large expansion amount and can effectively overcome the defect of rupture risk of the pipeline due to increase in the pressure in a pipe caused by the increase in axial thrust so as to prolong the service life of the pipeline.

Inside-outside air selector of air conditioner for automobile

Abstract: PURPOSE:To inhale the inside air from almost the whole circumference of a bell mouth as well as to aim at the promotion of high air quantity and low noise, by selecting each of inside and outside air intakes installed in an outer case where an inner case is housed, according to upper and lower sliding positions of the inner case. CONSTITUTION:At the time of taking in the outside air, an inner case 4 is slidably fitted in a cylindrical outer case 3, and since negative pressure is not yet impressed on an actuator 6, this inner case 4 is pressed down by a spring 7. Therefore, an inside air intake 13 is closed, while an outside air intake 12 is opened and interconnected to a conducting port 16 by another conducting port 14. Accordingly, the outside air is inhaled in a bell mouth 11 by way of the outside air intake 12 and these conducting ports 14 and 16. On the other hand, when the negative pressure is impressed on the actuator 6 and the inner case 4 is pulled up, the outside intake 12 is closed while the inside intake 13 is opened instead. Therefore, the inside air can be inhaled from almost the whole circumference an and around the bell mouth 11.

External pretreating jet gun for molten iron furnace

Abstract: The utility model belongs to external molten iron desulphurization equipment, in particular it relates to external molten iron pre-disposal spray lance The structural parameters of the bell mouth are as follows The angle between the vertical axes of the spray lance main body and the round table generatrix inside the bell mouth is 10????-12???? The inner round height of the spray lance bell mouth is 670mm-730mm The external circle diameter of the bell mouth is 640mm-660mm, and the internal circle diameter is 445mm-465mm The change of the bell mouth parameter of the utility can greatly reduce the desulphurizer dosage during the molten iron pre-desulphurization, thus the efficiency is promoted and the cost is decreased Meanwhile, it reduces the quality of slag, iron loss and the disposal time