CN205260986U - High temperature drain tap's novel connection bent axle - Google Patents

Abstract

The utility model relates to a high temperature drain tap's novel connection bent axle, including handle, crank, axostylus axostyle, axle sleeve, recess, the handle sets up at the crank front end, the axostylus axostyle is connected to the crank rear end, the axostylus axostyle cover is in the axle sleeve, the axostylus axostyle outer wall sets up two recesses. The beneficial effects of the utility model are that: axostylus axostyle after the improvement has increased by two recesses on original optical axis, make to connect the bent axle and under the prerequisite of affect using intensity not, reduced the area of contact of axostylus axostyle with the bush to heat radiating area between trough of belt axostylus axostyle and the axle sleeve increases, has reduced because factor that heat rises leads to the crank in the possibility of during operation with the mutual interference area of bush, thereby has made turbo charger get a promotion in the stability of long -time during operation. Through the friction that reduces axostylus axostyle and axle sleeve, the heat dissipation of increase axostylus axostyle and axle sleeve increases the life who connects the bent axle, and the reduction promotes economic benefits owing to the cost that maintains or the renewal part causes greatly.

Description

A kind of novel connection bent axle of high-temperature exhaust air valve

Technical field

The utility model relates to a kind of valve and connects bent axle, relates in particular to a kind of novel connection song of high-temperature exhaust air valveAxle.

Background technology

High-temperature exhaust air valve is widely used in boiler, solar energy, die heater, petroleum gas. Station boiler or industry potHigh temperature exhaust steam valve is all equipped with on stove,, air-out tube while starting as boiler, regulate boiler steam temperature prescribed limit itIn. When normal operation, when boiler pressure raises, do not wish again boiler safety door action, often output air-out tube valve and carry out step-down,As can be seen here, the condition of work of air-out tube valve is very severe, and what when starting, often discharge is steam water interface, under dutyWhat discharge is the high temperature and high pressure steam of total head state.

Along with increasing of boiler internal temperature and pressure, in order to prevent boiler internal excess Temperature and to control boost pressure,Under the effect of boost pressure, push high-temperature exhaust air valve open, bleed off a part of waste gas, it is to examine that boiler can normally be workedConsider the thing arriving. Because boiler is often worked under high speed, high temperature, the extreme temperatures of high-temperature exhaust air valve end, for high temperatureThe connection crankcase temperature of drain tap also increases thereupon. Especially in the time that boiler works long hours, connect crankshaft part position temperatureDegree can reach excessive temperature, because part material expands with heat and contract with cold, and gap smaller between the crank on connection bent axle and axle sleeve, evenCan make the two interfere with each other, finally cause the crank can not flexible rotating, the performance of boiler is produced to impact greatly. In addition axle,Bar and axle sleeve are for a long time in airtight break-in state, and rubbing surface is large, radiating effect is poor, in the situation that part temperature is high,Between each parts, phase mutual friction also can continue to increase the temperature of whole part, causes the short series of problems that waits in part service lifeOccur.

Therefore,, for above aspect, need to reasonably improve prior art.

Utility model content

For above defect, the utility model provides a kind of and reduces axostylus axostyle and axle sleeve contact area, thus reduce axostylus axostyle andThe friction of shaft room increases the novel connection bent axle of a kind of high-temperature exhaust air valve of whole part radiating effect, to solve simultaneouslyMany deficiencies of existing measuring technique.

For achieving the above object, the utility model is by the following technical solutions:

A novel connection bent axle for high-temperature exhaust air valve, comprises handle, crank, axostylus axostyle, axle sleeve, groove, described handleBe arranged on crank front end, can drive crank to rotate by handle, described crank rear end connects axostylus axostyle, and described axostylus axostyle is enclosed within axle sleeveIn, crank rotates and drives axostylus axostyle rotation to control drain tap aperture size;

Described axostylus axostyle outer wall arranges two grooves.

Meanwhile, described two grooves are the position relationship being parallel to each other.

The beneficial effect of the novel connection bent axle of a kind of high-temperature exhaust air valve described in the utility model is:

(1) axostylus axostyle after improvement has increased by two grooves on original optical axis, and making to connect bent axle is not affecting use by forceUnder the prerequisite of degree, reduce the contact area of axostylus axostyle and lining, and area of dissipation increase between trough of belt axostylus axostyle and axle sleeve, subtractLack the factor rising due to heat and caused the possibility of crank at the mutual intervene area of when work and lining, thereby boiler is being grownStability when time service gets a promotion.

(2) by reducing the friction of axostylus axostyle and axle sleeve, increase the heat radiation of axostylus axostyle and axle sleeve, increase the use longevity that connects bent axleLife, reduces due to the cost keeping in repair or renewal part causes, and greatly promotes economic benefit.

Brief description of the drawings

With reference to the accompanying drawings the utility model is described in further detail below.

Fig. 1 is the structural representation of a kind of novel connection bent axle of high-temperature exhaust air valve described in the utility model embodiment;

Fig. 2 is the shaft configurations signal of a kind of novel connection bent axle of high-temperature exhaust air valve described in the utility model embodimentFigure.

In figure:

1, handle; 2, crank; 3, axostylus axostyle; 4, axle sleeve; 5, groove.

Detailed description of the invention

As shown in Figure 1-2, the novel connection bent axle of a kind of high-temperature exhaust air valve described in the utility model embodiment, comprisesHandle 1, crank 2, axostylus axostyle 3, axle sleeve 4, groove 5, described handle 1 is arranged on crank 2 front ends, can drive crank 2 to turn by handle 1Moving, described crank 2 rear ends connect axostylus axostyle 3, and described axostylus axostyle 3 is enclosed within axle sleeve 4. Along with boiler works long hours, internal temperature andPressure constantly increases. In order to prevent excess Temperature in boiler, the excessive initiation contingency of pressure, need to be with by joystick 1Moving crank 2 rotates, and then drives axostylus axostyle 3 to rotate, and controls the size of high-temperature exhaust air valve valve opening.

Described axostylus axostyle 3 outer walls arrange two grooves 5;

Correspondingly, the position relationship of described two grooves 5 for being parallel to each other. Axostylus axostyle 3 after improvement, on original optical axisIncreased by two grooves 5, making to connect bent axle is not affecting under the prerequisite of working strength, has reduced the contact-making surface of axostylus axostyle 3 with lining 4Long-pending, and area of dissipation between trough of belt axostylus axostyle 3 and axle sleeve 4 increases, and reduced the factor rising due to heat and caused crank 2 workingTime and the possibility of the mutual intervene area of lining 4, thereby the stability of boiler in the time working long hours is got a promotion. SimultaneouslyBy reducing the friction of axostylus axostyle 3 and axle sleeve 4, increase the heat radiation of axostylus axostyle 3 and axle sleeve 4, increase the service life that connects bent axle, reductionDue to the cost keeping in repair or renewal part causes, greatly promote economic benefit.

Above-mentioned is can understand and apply this case technology for the ease of those skilled in the art, is familiar with abilityThe personnel of field technique obviously can make various amendments to these examples easily, and General Principle described herein is applied to otherIn embodiment and needn't pass through performing creative labour. Therefore, this case is not limited to above embodiment, those skilled in the art according toThe announcement of this case, the improvement of making for this case and amendment all should be in the protection domains of this case.

Claims (2)

1. a novel connection bent axle for high-temperature exhaust air valve, comprises handle (1), crank (2), axostylus axostyle (3), axle sleeve (4), its spyLevy and be: described handle (1) is arranged on crank (2) front end, crank (2) rear end connects axostylus axostyle (3), and described axostylus axostyle (3) is enclosed within axleIn cover (4); Described axostylus axostyle (3) outer wall arranges two grooves (5).

2. the novel connection bent axle of a kind of high-temperature exhaust air valve according to claim 1, is characterized in that: described two recessedGroove (5) is parallel to each other.