CN201285569Y

CN201285569Y - Air flow controller

Info

Publication number: CN201285569Y
Application number: CNU2008201430717U
Authority: CN
Inventors: 周冰洁
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-14
Filing date: 2008-11-14
Publication date: 2009-08-05
Anticipated expiration: 2018-11-14

Abstract

The utility model relates to a gas-flow controller which comprises a meter head used for counting and displaying the gas flow, a switch valve assembly used for controlling the open and the close of a valve body, and the valve body used for controlling the make-and-break of the gas. The gas-flow controller is characterized in that the valve body also comprises a pilot valve, i.e. the pilot valve is provided with a hole, and a pilot valve core is arranged on the hole; the pilot valve core is fixedly connected to the upper end of an immediate shaft of the switch valve assembly, which is positioned at the joint of a main valve plate; and the bottom plate of the meter head and the upper end of the valve body are provided with rotatable connecting sleeves. The gas-flow controller also comprises a hand valve opening device, i.e. a hole is arranged on a spiral body at the case of the meter head, and a cover is additionally arranged on the hole; and the upper end of the spiral body is provided with a hand shaft. The utility model improves the reliability of opening the valve, easy use and emergency requirement in maintenance.

Description

Gas flow controller

Technical field

The utility model relates to a kind of gas flow controller, especially a kind ofly is applicable to that combustion gas gives the IC-card formula gas flow controller of charge.

Background technology

The IC-card formula gas flow controller that uses is by gauge outfit at present, and switch valve assembly and valve body are formed.Original controller valve plate is an integral body, under close valve state because have pressure to exist or/and undertension or when not using for a long time, and the gauge outfit of original controller part and valve body are fixed together, when the place condition changes, the display that may produce the gauge outfit front faces situations such as body of wall, makes troubles for construction and installation, user's observation, reading; Also have, the housing of original gauge outfit seals, when instrument breaks down, because external force can't act on valve body, the situation that valve body can not switch may occur, can only wait for that the maintenance personal of specialty keeps in repair, bring great inconvenience even produce unsafe factor to the user.

The utility model content

For addressing the above problem, the utility model provides a kind of and is user-friendly to, safe and reliable gas flow controller.

The purpose of this utility model is achieved in that gas flow controller, comprise the gauge outfit that is used to count and show air flow rate, the switch valve assembly that is used for the application valve body folding and the valve body that is used to control the air-flow break-make, it is characterized in that, described valve body also comprises a pilot valve, i.e. perforate on the main valve plate, and guide's spool is installed on this hole; This guide's spool is fixed in the upper end that is positioned at main valve plate junction on the axis of switch valve assembly; Base plate and valve body upper end in gauge outfit are provided with rotating adapter sleeve; Also comprise and manually drive valve gear, promptly the gauge outfit shell be in spirochetal directly over position perforate and installed a lid additional, install manual axle additional in spirochetal upper end.

The utlity model has following advantage: 1,, can reduce the pressure that valve plate bears, promote the reliability of driving valve owing to be provided with the pilot valve structure.2, between gauge outfit and switch valve assembly and valve body, be provided with rotating company, make that gauge outfit can 360 ° of rotations, be convenient to install and user's observation.3, be provided with and manually drive valve gear, solved when instrument breaks down can't the switch valve body problem.

Description of drawings

Fig. 1 is a structural representation of the present utility model; Wherein: 1 valve body, 2 nuts, 3 guide's spools, 4 valve plates, 5 main valve pads, 6 pressing plates, 7 guide's springs, 8 guide's orifice plates, 9 guide's valve pads, 10 axis, 11 rubber telescopics, 12 main springs, 13 back-up rings, 14 adapter sleeves, 15 O-ring seals A, 16 ring flanges, 17 linear bearings, 18 O-ring seals B, 19 joints, 20 flexible pipes, 21 nuts, 22 base plates, 23 limit switch plates, 24 main shafts, 25 transverse axis, 26 bearings, 27 conveyor screws, 28 manual axles, 29 lids, 30 gauge outfits, 31 motor drive mechanism assemblies, 32 O-ring seals, 33 spring guide holders, 34 bolts, 35 O-ring seals C.

Embodiment

Reaching example with reference to the accompanying drawings is described further the utility model:

Referring to accompanying drawing 1, gas flow controller, comprise the gauge outfit (30) that is used to count and show air flow rate, be used for the switch valve assembly of application valve body folding and be used to control the valve body (1) of air-flow break-make, it is characterized in that, described valve body also comprises a pilot valve, promptly go up perforate, and on this hole, guide's spool (3) is installed at main valve plate (4); This guide's spool is fixed in the upper end that is positioned at main valve plate junction on the axis (10) of switch valve assembly; Base plate (22) in gauge outfit (30) is provided with rotating adapter sleeve (14) with valve body (1) upper end; Also comprise and manually drive valve gear, promptly gauge outfit (30) shell be in conveyor screw (27) directly over position perforate and installed a lid (29) additional, O-ring seals C (35) is inserted in lid (29) from the upper end, install manual axle (28) additional in the upper end of conveyor screw (27).

Described guide drives valve and comprises: main valve pad (5) is fixed on the valve plate (4) by pressing plate (6), guide's valve pad (9) is fixed on guide's spool (3), guide's spool (3), guide's spring (7) are contained in the cavity of valve plate (4), again guide's orifice plate (8) is fixed on the valve plate (4), nut (2) is enclosed within axis (10) lower end, self-locking nut is contained on the main shaft, and nut (2) is by being threaded on guide's spool (3).Solved Common Controller when driving valve owing to there is not first guide structure, at undertension or when not using for a long time, the situation of the valve that often occurs not opening.

Described adapter sleeve (14) one end is installed on the gauge outfit base plate by screw, and the other end is locked flange (16) (having installed) with bolt (34) by the upper end of flange (16) connection valve body (1) when adapter sleeve is installed in gauge outfit with valve body (1).At this moment, be rotary between valve body (1) and the gauge outfit, user's installation, observation, reading brought convenience.

It is described that manually to drive valve gear be in the perforate of gauge outfit shell and installed a lid (29) additional, O-ring seals C (35), be inserted in lid (29) from the upper end, lid (29) be in conveyor screw (27) directly over, when breaking down can not automatic switch valve the time, uncap (29) is stretched manual axle (28) the clockwise rotation manual axle into lune outside the triangle spanner is inserted in the special use in the hole, manually axle drives conveyor screw (27) and manually drives valve, rotate to that certain position stops and can keeping, the valve gas that is opened passes through.

Manual valve-opening mechanism is formed by the bottom that is threaded onto conveyor screw (27) in the lower end of described manual axle (28), having solved Common Controller breaks down, the maintenance personal can't arrive at the scene again the short time, emergent requirement when the user uses the gas of being controlled again can make user's loss be reduced to minimum like this.Wait for maintenance personal's arrival simultaneously.

Described axis (10) links together by screw thread and main shaft (24), with rubber telescopic (11) main shaft of packing into, rubber telescopic (11) lower end is fixed on guide's spool (3), ring washer (13) and guide's spring (12) are contained on the main shaft (24), linear bearing (17) is contained on the base plate (22), O-ring seal (32) is contained on the spring guide holder (33), spring guide holder (33) is contained on the base plate (22), ring flange (16) is inserted in adapter sleeve (14), O-ring seals B (18) is contained in adapter sleeve (14) top slot, adapter sleeve (14) upper end is by being threaded onto base plate (22), and O-ring seals A (15) is contained in the following end slot of adapter sleeve (14); Main shaft (24) top penetrates in the linear bearing (17) on the spring guide holder (33), again that the upper end and spring guide holder (33) lower end of rubber telescopic (11) is affixed, transverse axis (25) is packed in main shaft (24) upper hole, and fix with holding screw, two bearings (26) are pressed into transverse axis (25), two bearings (26) two ends, one end cooperates with conveyor screw (27), and the other end embeds limit switch plate (23), with limit switch plate (23) screw be contained in base plate (22) above; Main shaft (24) top penetrates in the linear bearing (17) on the spring guide holder (33), the upper end and spring guide holder (33) lower end of rubber telescopic (11) is affixed, transverse axis (25) is packed in main shaft (24) upper hole, and fix with holding screw, two bearings (26) are pressed into transverse axis (25), two bearings (26) two ends, one end cooperates with conveyor screw (27), the other end embeds limit switch plate (23), with limit switch plate (23) screw be contained in base plate (22) above, conveyor screw (27) is contained on the base plate (22) with screw, conveyor screw (27) lower end gear matches with the motor reducer gear of motor drive mechanism assembly (31), forms switch valve part.

Joint (19) upper end is passed from the base plate lower end and is locked with nut (21), and it is affixed that an end of flexible pipe (20) penetrates joint, is used for other on line.

Claims

1, gas flow controller, comprise the gauge outfit that is used to count and show air flow rate, the switch valve assembly that is used for the application valve body folding and the valve body that is used to control the air-flow break-make, it is characterized in that, described valve body also comprises a pilot valve, i.e. perforate on the main valve plate, and guide's spool is installed on this hole; This guide's spool is fixed in the upper end that is positioned at main valve plate junction on the axis of switch valve assembly; Base plate and valve body upper end in gauge outfit are provided with rotating adapter sleeve; Also comprise and manually drive valve gear, promptly the gauge outfit shell be in spirochetal directly over position perforate and installed a lid additional, install manual axle additional in spirochetal upper end.

2, gas flow controller according to claim 1, it is characterized in that, described guide drives valve and comprises: main valve pad (5) is fixed on the valve plate (4) by pressing plate (6), guide's valve pad (9) is fixed on guide's spool (3), guide's spool (3), guide's spring (7) are contained in the cavity of valve plate (4), and guide's orifice plate (8) is fixed on the valve plate (4), and nut (2) is enclosed within axis (10) lower end, self-locking nut is contained on the main shaft, and nut (2) is by being threaded on guide's spool (3).

3, gas flow controller according to claim 1, it is characterized in that, described adapter sleeve (14) one end is installed on the gauge outfit base plate by screw, and the other end is by the upper end of flange (16) connection valve body (1), and bolt (34) is with flange (16) and valve body (1) locking.

4, gas flow controller according to claim 1 is characterized in that, O-ring seals C (35) is inserted in the described lid (29) that valve gear installs additional of manually opening from the upper end.

5, gas flow controller according to claim 1, it is characterized in that, described switch valve part is by forming with lower member, axis (10) links together by screw thread and main shaft (24), rubber telescopic (11) main shaft of packing into, rubber telescopic (11) lower end is fixed on guide's spool (3), ring washer (13) is contained on the main shaft (24) with guide's spring (12), linear bearing (17) is contained on the base plate (22), O-ring seal (32) is contained on the spring guide holder (33), spring guide holder (33) is contained on the base plate (22), ring flange (16) is inserted in adapter sleeve (14), O-ring seals B (18) is contained in adapter sleeve (14) top slot, and adapter sleeve (14) upper end is by being threaded onto base plate (22), and O-ring seals A (15) is contained in the following end slot of adapter sleeve (14); Main shaft (24) top penetrates in the linear bearing (17) on the spring guide holder (33), the upper end of rubber telescopic (11) and spring guide holder (33) lower end are affixed, transverse axis (25) is packed in main shaft (24) upper hole, and it is fixing, two bearings (26) are pressed into transverse axis (25), two bearings (26) two ends, one end cooperates with conveyor screw (27), and the other end embeds limit switch plate (23), with limit switch plate (23) screw be contained in base plate (22) above; Main shaft (24) top penetrates in the linear bearing (17) on the spring guide holder (33), the upper end of rubber telescopic (11) and spring guide holder (33) lower end are affixed, transverse axis (25) is packed in main shaft (24) upper hole, and it is fixing, two bearings (26) are pressed into transverse axis (25), two bearings (26) two ends, one end cooperates with conveyor screw (27), the other end embeds limit switch plate (23), with limit switch plate (23) screw be contained in base plate (22) above, conveyor screw (27) is packed on the base plate (22), and conveyor screw (27) lower end gear matches with the motor reducer gear of motor drive mechanism assembly (31).