CN101191582A

CN101191582A - Steam trap

Info

Publication number: CN101191582A
Application number: CNA2006101607021A
Authority: CN
Inventors: 叶航晖
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-29
Filing date: 2006-11-29
Publication date: 2008-06-04

Abstract

The invention discloses a steam trap, which is aimed at providing a steam trap capable of carrying out automatic stepless water discharging according to the quantity of vapor condensed water, stabilizing steam pressure and processing temperature of a heating device, improving heat exchange effect, and eliminating water hammer and noise during the run of a condensed water closed circuit recovery system. The steam trap comprises a casing, a float, a water inlet, a water outlet, an axle head, an earthenware ring, a main shaft, a valve core, a valve seat and a discharging port. The sliding surface of a slide way and the shaft line of the main shaft are arranged slantwise in an included angle, the float is a closed jacket annular barrel body telescoping the main shaft, a piston ring is positioned between the inner wall of the casing and the jacket of the float, the valve core is welded onto the lower end face of the main shaft, the valve seat is positioned below the valve core, speed regulation holes are arranged in a arc form on the valve core, and discharging holes are arranged in a arc form on the valve seat.

Description

STEAM TRAP

Technical field

What the present invention relates to is a kind of automatic steam trap that is used for the exhaust steam condensed water.

Background technique

A kind of public vertical keg float automatic steam trap, float is last uncovered bucket, anhydrous in the keg float before the work, the operation startup at first entered the STEAM TRAP housing from the condensed water of heating plant afterwards, keg float floats to a high position with water level, drain port is closed, water continues to increase and overflow in the keg float, after filling enough water yields in the keg float, keg float overcomes buoyancy and drops to lowest order rapidly and open the drain port that reaches in the keg float, and most of water in the keg float is discharged, and keg float floats rapidly again, close drain port, keg float has played the effect that condensed water stops discharge of steam again of promptly discharging with the knee-action of water level.This STEAM TRAP has work and not controlled by heating power, allows to carry out the advantage of energy-saving heat-insulating insulation.But its deficiency is the drain port cross-sectional sizes can not regulate automatically, be positioned at valve seat below, be fixed on spool at the bottom of the keg float bucket with the quick opening and closing of keg float knee-action, STEAM TRAP is carried out intermittence and is spurted hydrophobic rapidly, make the vapor pressure and the temperature of heating plant produce big fluctuation, thereby use this STEAM TRAP, be difficult to satisfy the required precision of workpiece heating process temperature.

Summary of the invention

The present invention has overcome deficiency of the prior art, and a kind of size that can come automatic step-less adjustment drain port according to the production of steam condensate is provided, and it is hydrophobic to carry out continuous variable, can stablize the STEAM TRAP of the technological temperature and the hydrophobic pressure of heating plant.

Technological scheme of the present invention is: STEAM TRAP comprises housing, float, water intake, drain, spindle nose, rim, main shaft, spool, valve seat and drain port, the slip surface of described slideway becomes angle to be in tilted layout with the axis of main shaft, float is the airtight chuck annular barrel of being inserted in main shaft, piston ring is between inner walls and float overcoat, spool is welded on the lower end surface of main shaft, valve seat has the speed governing hole of arc layout on the spool below spool, the weep hole that has arc to arrange on the valve seat.

Described slide post and slideway are between housing and float, slideway is fixed on the housing, slide post one end is fixed in cover in the float, the other end puts in slideway and forms the inclined plane sliding pair, slideway also can be fixed on float and put outward, slide post one end is fixed in housing, and the other end puts in slideway and forms the inclined plane sliding pair; The interior cover of described float and main shaft surface is polygonal transmission movingly; Described speed governing hole and weep hole overlap drain port; Described piston ring is fixed on the housing, and the overcoat of its inner ring and float is for moving with the touch, and piston ring also can be fixed on the float, and the inwall of its outer ring and housing is for moving with the touch.

Described slide post and slideway are formed inclined plane polygonal transmission movingly between main shaft and float, and are provided with track and anti-turntable between housing and float; Described track and anti-turntable are formed the vertical track sliding pair, are arranged in the below or the top of piston ring.

The invention has the beneficial effects as follows: can come the size of automatic step-less adjustment drain port according to the production of steam condensate, it is hydrophobic to carry out continuous variable, stablizes the technological temperature and the hydrophobic pressure of heating plant; The mechanical part motion is slow, and wear rate is low, long service life; Help eliminating the operation water attack and the noise of the closed circuit reclaiming system of condensed water.

Description of drawings

Fig. 1 is the facade view of first embodiment of the invention.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the facade view of second embodiment of the invention.

Among the figure: 12 valve seats, 13 weep holes, 14 drain ports, 15 tracks, the 16 anti-turntables 17 of housing 1 float 2 piston rings 3 slide posts 4 slideways 5 water intakes 6 drains 7 spindle noses 8 rims 9 main shafts 10 spools 11 speed governing holes

Embodiment

Below in conjunction with accompanying drawing the present invention is further described.

Among the embodiment shown in Figure 1, STEAM TRAP mainly is made up of housing 1, float 2, piston ring 3, slide post 4, slideway 5, water intake 6, drain 7, spindle nose 8, rim 9, main shaft 10, spool 11, speed governing hole 12, valve seat 13, weep hole 14 and drain port 15.

Housing 1 is the vertical type cylinder cylindrical shell of diameter 100mm, high 260mm, and the upper cover barrel is provided with water intake 6, and drain 7 is established on the top, and the valve seat 13 that is processed with the recessed flange-type end socket of circle is by bolt locking maintenance; Its inwall stage casing is fixed with piston ring 3, and epimere is fixed with rim 9, and slideway 5 is fixed between piston ring 3 and the rim 9.

Main shaft 10 is vertical square shaft, the center hole of the cylinder spindle nose 8 insertion rims 9 of upper end welding, and during the circle of lower end welding spool 11 insertion valve seats 13 was recessed, cover employing square tubes were made and are inserted in main shaft 10 and form transmission movingly in the float 2; Slideway 5 is that two rectangular coil channel-section steel radial symmetric are fixed on housing 1 inwall, is arranged in piston ring 3 tops, and its lead angle equal and opposite in direction direction is identical, and length is got about 1/4th helical pitches, lift angle more preferably greater than 45 °; Two cylindrical body slide post 4 radial symmetric are fixed on float 2 overcoat walls, and an end puts in forms sliding pair movingly in the slideway 5; The lifting of float 2 rotatablely moves, and the inner ring of its overcoat wall and piston ring 3 is formed slack piston mechanism.

Fig. 2 shows the working state of speed governing hole 12 and weep hole 14, and speed governing hole 12 is the holes that make a circular hole or a plurality of arc layout on spool 11 disks, and weep hole 14 is to make a circular hole on valve seat 13 disks; Spool 11 is formed hydrophobic control gate with valve seat 13 with plane contact, and two surface of contact obtain sealability through mirror finishing.Rotational valve core 11 can change the area of overlap of speed governing hole 12 and weep hole 14, promptly changes the size of drain port 15.

Among another embodiment shown in Figure 3, STEAM TRAP mainly is made up of housing 1, float 2, piston ring 3, slide post 4, slideway 5, water intake 6, drain 7, spindle nose 8, rim 9, main shaft 10, spool 11, speed governing hole 12, valve seat 13 and weep hole 14, drain port 15, track 16 and anti-turntable 17.Its difference is, main shaft 10 is vertical round bar, is fixed on cover in the float 2 as 5, two cylindrical body slide post 4 radial symmetric of slide rail at two rectangular coil grooves of round bar cylinder radial symmetric processing, and an end puts in the slideway 5 to form the tilted slideway transmission movingly; In housing 1 inwall radial symmetric fixed-site two rectangle channel-section steels are arranged, be arranged vertically above piston ring 3 and be fixed on float 2 overcoats as anti-turntable 17 radial symmetric of 16, two cylindrical bodys of track, an end puts in forms vertical sliding pair in the track 16; Piston ring 3 is fixed on float 2 overcoat walls, and its outer ring and housing 1 inwall are formed slack piston mechanism.

Condensed water enters STEAM TRAP from water intake 6, arrives the drain port of being made up of speed governing hole 12 and weep hole 14 15, discharges STEAM TRAP.When float 2 was in extreme lower position, the corresponding states of drain port 15 was a contract fully.Float 2 is done upper and lower displacement with the lifting of water level, and is spacing by valve seat 13 and rim 9.After float 2 rose to slide post 4 gradually and the last slip surface of slideway 5 contacts, main shaft 10 began to do together with spool 11 and clockwise rotates, and speed governing hole 12 also just can enter overlap condition formation drain port 15 with weep hole 14; When inflow greater than hydrophobic amount, float 2 continues to rise, and amplifies drain port 15 gradually, hydrophobic amount increases progressively; When inflow less than hydrophobic amount, drawdown promotes float 2 downwards by vapor pressure, contacts with the lower slider face of slideway 5 to slide post 4, main shaft 10 begins to do and rotates counterclockwise, and dwindles drain port 15 gradually, hydrophobic amount is successively decreased; When hydrophobic amount and inflow balance, float 2 transfixions, hydrophobic amount is constant.Float 2 moves up and down with the lifting of water level, but makes main shaft 10 do de-rotation together with spool 11, has just obtained the hydrophobic function of automatic stepless variable.

At drain 7 configuration valves, be used for getting rid of the incoagulable gas of sneaking into STEAM TRAP.

Claims

1. STEAM TRAP, comprise housing (1), float (2), water intake (6), drain (7), spindle nose (8), rim (9), main shaft (10), spool (11), valve seat (13) and drain port (15), it is characterized in that, the slip surface of described slideway (5) becomes angle to be in tilted layout with the axis of main shaft (10), the airtight chuck annular barrel of float (2) for being inserted in main shaft (10), piston ring (3) is positioned between housing (1) inwall and float (2) overcoat, spool (11) is welded on the lower end surface of main shaft (10), valve seat (13) is in spool (11) below, the speed governing hole (12) that has arc to arrange on the spool (11), the weep hole (14) that has arc to arrange on the valve seat (13).

2. according to the described STEAM TRAP of claim (1), it is characterized in that described slide post (4) and slideway (5) are positioned at forms the inclined plane sliding pair between housing (1) and the float (2).

3. according to the described STEAM TRAP of claim (1), it is characterized in that interior cover of described float (2) and main shaft (10) surface composition be the polygonal transmission movingly.

4. according to the described STEAM TRAP of claim (1), it is characterized in that described speed governing hole (12) overlaps drain port (15) with weep hole (14).

5. according to the described STEAM TRAP of claim (1), it is characterized in that, described slide post (4) and slideway (5) are positioned between main shaft (10) and the float (2) forms inclined plane transmission movingly, and is provided with track (16) and anti-turntable (17) between housing (1) and float (2).

6. according to the described STEAM TRAP of claim (5), it is characterized in that described track (16) and anti-turntable (17) are formed the vertical track sliding pair.