CN207848520U - A kind of pressure reducing valve of adjustable output pressure - Google Patents

Abstract

The utility model provides a kind of pressure reducing valve of adjustable output pressure, including valve body (1), spool (2), pressure regulation bar (3), compression bar set (4), dial (5) and knob (6).The valve body that the utility model uses is equipped with import, outlet, throttling chamber and upper accent, spool and is made of diaphragm, core frame, dnockout core, strainer and gasket, and pressure regulation bar is made of screw rod, look nut and spring；When work, the high pressure water flow of entrance flows out for low pressure water from exit through throttling seam decompression；When exit hydraulic pressure increases, diaphragm drives dnockout core to move up, and throttling seam is reduced or even closed by bulb, and the low hydraulic pressure in exit is made to keep stablizing；When adjusting decompression ratio, turn knob, screw rod drives look nut to push down on spring, spring increases the pressure to diaphragm, change the proportionate relationship of the stress and protuberance of diaphragm, it causes the pressure of the low hydraulic pressure in exit to be able to the technical solution adjusted, pressure reducing valve is made to have achieved the purpose that decompression proportion adjustment can be carried out in site of deployment.

Description

A kind of pressure reducing valve of adjustable output pressure

Technical field

A kind of tap line the utility model is related to pressure reducing valve, in particular to for high-rise apartment building building and residential quarter, will High pressure tap water is decompressed to a kind of pressure reducing valve of adjustable output pressure of low pressure.

Background technology

Pressure reducing valve be it is a kind of input terminal high-pressure fluid is decompressed to the valve that low pressure is exported by output end by throttling valve core, Pressure reducing valve has pressure stabilization function for the low-pressure fluid of output；

The aperture of the throttling valve core of pressure reducing valve is determined through the decompression ratio between its input terminal and output end pressure, existing The aperture for having the throttling valve core of technology pressure reducing valve, by its depressurize scale lattice production when just it has been determined that thus, prior art knot The output pressure of the pressure reducing valve of structure is uncontrollable in application；

In practical applications, since the hydraulic pressure of high building tap water bus pipeline is with the height difference of each interlayer and by upper It is incremented by downwards, since decompression ratio can not be adjusted in site of deployment, causes the hydraulic pressure height of registering one's residence of each interlayer tap line of high building It is widely different, often occur, hydraulic pressure of registering one's residence is excessively high, impairs the tap and other water appliances of user, such as such as washing machine, heat Hydrophone, direct filtering drinking water device；Hydraulic pressure of registering one's residence is too low, makes troubles to user；Therefore, the prior art there are decompression ratios can not It is the problem of site of deployment is adjusted and insufficient.

Invention content

Existing problems and shortcomings for the above-mentioned prior art, the utility model are used by valve body, spool, pressure regulation bar, pressure The device that rod set, dial, knob are constituted, wherein valve body is equipped with import, outlet, throttling chamber and upper accent, and the import is through upper Accent, throttling chamber are communicated with outlet, are known as internal thread suitable for reading equipped with internal thread at the upper edge of the upper accent；Spool is by film Piece, core frame, dnockout core, strainer and gasket are constituted, and diaphragm is disc elastic rubber texture part；Core frame is support diaphragm, core frame, work The plastics matter component of core, strainer；Dnockout core is plastics matter component, and the top of dnockout core is that cylinder rod is known as core bar, the top of dnockout core It is known as bulb for spherical shape；Diaphragm is located at the upper surface of core frame, and dnockout core slides through the center of core frame, the upper end of the core bar of dnockout core Be fixedly connected with diaphragm, the bulb of dnockout core is located at below core frame, below the bulb and core frame between be equipped with spacing Referred to as throttling seam；Strainer is located at the outer rim of core frame, and gasket is located at the upper surface of diaphragm；Pressure regulation bar is by screw rod, look nut and spring It constitutes, look nut screws the lower part for being connected to screw rod, and spring is located at below look nut, at the outer rim of the look nut If the notch there are one rectangle is known as guide groove；Compression bar set is hollow, open underneath, has the cylinder step cup-shaped plastics on top above Texture part, the top center of compression bar set are equipped with circular through-hole and are known as covering mesoporous, compression bar cover post jamb it is following be equipped with it is described on The external screw thread of mouth internal thread corresponding matching is known as rod set external screw thread, and compression bar, which covers, is equipped with upper and lower directions and the guide groove at internal chamber wall The convex ribs being slidably matched are known as guide rail；Dial be upper and lower opening, hollow and thin-walled, truncated cone plastics matter component, dial Circular conical surface is laid with scale；Knob is hollow, open underneath, has the polygon cup-shaped plastics matter component on top above, on knob The through-hole of the central rectangular in face is known as button rod aperture, and the side above knob is additionally provided with fan-shaped through-hole and is known as form；

Spool is located at the upper accent of valve body at throttling chamber, and the core frame and strainer are located at the knot of the upper accent and import At conjunction, the lower end of the dnockout core is located at throttling intracavitary, and pressure regulation bar is located at the top of the diaphragm, the lower end of the spring with it is described The upper surface of diaphragm central contact；Compression bar set screws through the rod set external screw thread and internal thread suitable for reading fixation and is connected to the upper accent Upper edge at and the core frame fixed；Knob is located at the top of compression bar set, and dial is located between knob and compression bar set, carves The upper surface of scale and compression bar set is fixedly connected；The upper end upward sliding of the pressure regulation bar passes through the set mesoporous, through the button bar Hole is fixedly connected with knob；The look nut is located in compression bar set to be connected through the guide groove, guide rail sliding gomphosis；

When work, the high pressure water of valve body is entered from import, when flowing through the spool at upper accent and the chamber that throttles, through institute It is that low pressure water is flowed out by exit to state throttling seam decompression；When exit, hydraulic pressure increases, diaphragm is swelled drive upwards by hydraulic pressure lives Core moves up, and the bulb, which upwards stitches the throttling, to reduce or even close, and the low hydraulic pressure in exit is made to keep stablizing；When need When adjusting decompression ratio, manual rotation knob drives look nut to push down on spring, passes through spring by the screw rod of pressure regulation bar Increase to the pressure above diaphragm, changes the stress of diaphragm and the proportionate relationship of protuberance, the pressure of the low hydraulic pressure in exit is made to obtain To adjust；Guide groove is with guide rail for preventing look nut from dallying with the rotation of knob and the screw rod；Form is for adjusting When decompression ratio, can ocular scale disk scale as the technical solution with reference to scale, a kind of adjustable output pressure is provided Pressure reducing valve, it is intended to make pressure reducing valve, achieve the purpose that decompression proportion adjustment can be carried out in site of deployment.

What the purpose of this utility model was realized in：A kind of pressure reducing valve of adjustable output pressure, including valve body, valve Core, pressure regulation bar, compression bar set, dial and knob, wherein：The valve body is hollow, thin-walled, the copper alloy matter in threeway tubulose The channel of component, valve body left part is import, and the channel of valve body right part is outlet, and the channel of valve body central upper is upper accent, valve The channel of body central lower is throttling chamber, and the import is communicated through upper accent, throttling chamber with outlet；The upper edge of the upper accent Place is known as internal thread suitable for reading equipped with internal thread；

The spool is made of diaphragm, core frame, dnockout core, strainer and gasket, and the diaphragm is disc elastic rubber matter Component；The core frame is the modeling for being used to support diaphragm, core frame, dnockout core and strainer, and being used to be isolated the upper accent and the chamber that throttles Expect texture part；The dnockout core is plastics matter component, and the top of dnockout core is that cylinder rod is known as core bar, and the top of dnockout core is spherical claim For bulb；The strainer is cylindrical annular stainless steel cloth；The gasket is the stainless steel components of circular ring shape；Diaphragm is located at core frame The upper surface of, dnockout core slides through the center of core frame, and the upper end of the core bar of dnockout core is fixedly connected with diaphragm, the ball of dnockout core Head be located at core frame below, below the bulb and core frame between be equipped with spacing be known as throttle seam；Strainer is located at the outer of core frame Edge, gasket are located at the upper surface of diaphragm；

The pressure regulation bar is made of screw rod, look nut and spring, and the screw rod is the modeling that middle part is equipped with flange step Expect that texture part, the lower part of screw rod are equipped with external screw thread, the top of screw rod is cylindrical rod-shaped, and the upper end of screw rod is equipped with the tenon of rectangle And screw hole；The look nut is discoid plastics matter component, and look nut center is equipped with internal thread through hole, look nut Outer rim at the notch that sets there are one rectangle be known as guide groove；The spring is cylindroid helical-coil compression spring；Look nut screws company It is connected on the lower part of screw rod, spring is located at below look nut；

The compression bar set is hollow, open underneath, has the cylinder step cup-shaped plastics matter component on top, compression bar set above Top center be equipped with circular through-hole and be known as covering mesoporous, being equipped with below for compression bar set post jamb corresponding with the internal thread suitable for reading being matched The external screw thread of conjunction is known as rod set external screw thread, the convex ribs for being equipped with upper and lower directions at compression bar set internal chamber wall, being slidably matched with the guide groove Referred to as guide rail；

The dial is upper and lower opening, hollow and thin-walled, truncated cone plastics matter component, and the circular conical surface of dial is uniformly distributed Equipped with scale label；

The knob is hollow, open underneath, has the polygon cup-shaped plastics matter component on top above, above knob in The through-hole of heart rectangle is known as button rod aperture, and the side above knob is additionally provided with fan-shaped through-hole and is known as form；

Spool is located at the upper accent of valve body at throttling chamber, and the core frame and strainer are located at the knot of the upper accent and import At conjunction, the lower end of the dnockout core is located at throttling intracavitary, and pressure regulation bar is located at the top of the diaphragm, the lower end of the spring with it is described The upper surface of diaphragm central contact；Compression bar set screws through the rod set external screw thread and internal thread suitable for reading fixation and is connected to the upper accent Upper edge at and the core frame fixed；Knob is located at the top of compression bar set, and dial is located between knob and compression bar set, carves The upper surface of scale and compression bar set is fixedly connected；The upper end upward sliding of the pressure regulation bar passes through the set mesoporous, through the button bar Hole is fixedly connected with knob；The look nut is located in compression bar set to be connected through the guide groove, guide rail sliding gomphosis.

Working principle and beneficial effect

When work, the high pressure water of valve body is entered from import, when flowing through the spool at upper accent and the chamber that throttles, through institute It is that low pressure water is flowed out by exit to state throttling seam decompression；

When exit, hydraulic pressure increases, diaphragm is swelled upwards by hydraulic pressure drives dnockout core to move up, and the bulb upwards will The throttling seam reduces or even closes, and the low hydraulic pressure in exit is made to keep stablizing；

When needing to adjust decompression ratio, manual rotation knob drives look nut to push down on by the screw rod of pressure regulation bar Spring is increased to the pressure above diaphragm by spring, changes the stress of diaphragm and the proportionate relationship of protuberance, make the low of exit The pressure of hydraulic pressure is adjusted；

Guide groove is with guide rail for preventing look nut from dallying with the rotation of knob and the screw rod；Form is used for When adjusting decompression ratio can the scale of ocular scale disk be used as with reference to scale.

The present apparatus is simple in structure, reliable operation, and the effect by pressure regulation bar and knob to diaphragm enables pressure reducing valve answering The adjusting of decompression ratio is carried out with scene.

Above-mentioned, the utility model uses the device being made of valve body, spool, pressure regulation bar, compression bar set, dial, knob, In, valve body is equipped with import, outlet, throttling chamber and upper accent, and the import is communicated through upper accent, throttling chamber with outlet, it is described on It is known as internal thread suitable for reading equipped with internal thread at the upper edge of accent；Spool is made of diaphragm, core frame, dnockout core, strainer and gasket, film Piece is disc elastic rubber texture part；Core frame is the plastics matter component for supporting diaphragm, core frame, dnockout core, strainer；Dnockout core is plastics The top of texture part, dnockout core is that cylinder rod is known as core bar, and the top of dnockout core is spherical referred to as bulb；Diaphragm is located at the upper of core frame Face, dnockout core slide through the center of core frame, and the upper end of the core bar of dnockout core is fixedly connected with diaphragm, the bulb position of dnockout core Below core frame, below the bulb and core frame between be equipped with spacing be known as throttle seam；Strainer is located at the outer rim of core frame, pad Piece is located at the upper surface of diaphragm；Pressure regulation bar is made of screw rod, look nut and spring, and look nut, which screws, to be connected under screw rod Portion, spring are located at below look nut, and the notch there are one rectangle is set at the outer rim of the look nut and is known as guide groove；Compression bar Set is hollow, open underneath, has the cylinder step cup-shaped plastics matter component on top, the top center of compression bar set to be equipped with circle above Through-hole be known as covering mesoporous, following be equipped with of compression bar set post jamb is known as rod set with the external screw thread of the internal thread corresponding matching suitable for reading External screw thread, compression bar, which covers, to be equipped with upper and lower directions, is known as guide rail with the convex ribs that the guide groove is slidably matched at internal chamber wall；Dial is upper Lower opening, hollow and thin-walled, truncated cone plastics matter component, the circular conical surface of dial are laid with scale；Knob is hollow, following Polygon cup-shaped plastics matter component that is open, having top above, the through-hole of the central rectangular above knob are known as button rod aperture, on knob The side in face is additionally provided with fan-shaped through-hole and is known as form；

Spool is located at the upper accent of valve body at throttling chamber, and the core frame and strainer are located at the knot of the upper accent and import At conjunction, the lower end of the dnockout core is located at throttling intracavitary, and pressure regulation bar is located at the top of the diaphragm, the lower end of the spring with it is described The upper surface of diaphragm central contact；Compression bar set screws through the rod set external screw thread and internal thread suitable for reading fixation and is connected to the upper accent Upper edge at and the core frame fixed；Knob is located at the top of compression bar set, and dial is located between knob and compression bar set, carves The upper surface of scale and compression bar set is fixedly connected；The upper end upward sliding of the pressure regulation bar passes through the set mesoporous, through the button bar Hole is fixedly connected with knob；The look nut is located in compression bar set to be connected through the guide groove, guide rail sliding gomphosis；

When work, the high pressure water of valve body is entered from import, when flowing through the spool at upper accent and the chamber that throttles, through institute It is that low pressure water is flowed out by exit to state throttling seam decompression；When exit, hydraulic pressure increases, diaphragm is swelled drive upwards by hydraulic pressure lives Core moves up, and the bulb, which upwards stitches the throttling, to reduce or even close, and the low hydraulic pressure in exit is made to keep stablizing；When need When adjusting decompression ratio, manual rotation knob drives look nut to push down on spring, passes through spring by the screw rod of pressure regulation bar Increase to the pressure above diaphragm, changes the stress of diaphragm and the proportionate relationship of protuberance, the pressure of the low hydraulic pressure in exit is made to obtain To adjust；Guide groove is with guide rail for preventing look nut from dallying with the rotation of knob and the screw rod；Form is for adjusting When decompression ratio, can ocular scale disk scale as with reference to scale technical solution, overcoming the prior art, there are Pressure reducing ratios Example can not make to subtract the problem of site of deployment is adjusted with deficiency, a kind of pressure reducing valve of the adjustable output pressure provided Pressure valve has achieved the purpose that decompression proportion adjustment can be carried out in site of deployment.

Description of the drawings

Fig. 1 is a kind of main view schematic cross-sectional view of the pressure reducing valve of adjustable output pressure of the utility model；

Fig. 2 is a kind of axonometric schematic diagram of the pressure reducing valve of adjustable output pressure of the utility model；

Fig. 3 is a kind of exploded isometric schematic diagram of the pressure reducing valve of adjustable output pressure of the utility model；

Fig. 4 is a kind of schematic cross-sectional view of the spool 2 of the pressure reducing valve of adjustable output pressure of the utility model；

Fig. 5 is a kind of schematic top plan view of the pressure reducing valve of adjustable output pressure of the utility model.

Embodiment in below in conjunction with the accompanying drawings is described in further detail the utility model, but should not be construed as to this reality With novel any restrictions.

In figure：Valve body 1, import 11, outlet 12, throttling chamber 13, upper accent 14, internal thread suitable for reading 141, spool 2, diaphragm 21, core frame 22, dnockout core 23, strainer 24, gasket 25, pressure regulation bar 3, screw rod 31, look nut 32, guide groove 321, spring 33, compression bar Set 4, set mesoporous 41, rod set external screw thread 42, guide rail 43, dial 5, knob 6, form 61, button rod aperture 62.

Specific implementation mode

Refering to fig. 1~Fig. 5, a kind of pressure reducing valve of adjustable output pressure of the utility model, including valve body 1, spool 2, Pressure regulation bar 3, compression bar set 4, dial 5 and knob 6, wherein：The valve body 1 is hollow, thin-walled, in the copper alloy of threeway tubulose The channel of texture part, 1 left part of valve body is import 11, and the channel of 1 right part of valve body is outlet 12, and the channel of 1 central upper of valve body is The channel of upper accent 14,1 central lower of valve body is throttling chamber 13, and the import 11 is through upper accent 14, throttling chamber 13 and outlet 12 It communicates；It is known as internal thread 141 suitable for reading equipped with internal thread at the upper edge of the upper accent 14；

The spool 2 is made of diaphragm 21, core frame 22, dnockout core 23, strainer 24 and gasket 25, and the diaphragm 21 is disk Shape elastic rubber texture part；The core frame 22 is to be used to support diaphragm 21, core frame 22, dnockout core 23 and strainer 24, and be used to be isolated The plastics matter component of the upper accent 14 and throttling chamber 13；The dnockout core 23 is plastics matter component, and the top of dnockout core 23 is cylinder Rod is known as core bar, and the top of dnockout core 23 is spherical referred to as bulb；The strainer 24 is cylindrical annular stainless steel cloth；The pad Piece 25 is the stainless steel components of circular ring shape；Diaphragm 21 is located at the upper surface of core frame 22, and dnockout core 23 slides through the center of core frame 22, living The upper end of the core bar of core 23 is fixedly connected with diaphragm 21, and the bulb of dnockout core 23 is located at below core frame 22, the ball It is equipped with spacing between below head and core frame 22 and is known as the seam that throttles；Strainer 24 is located at the outer rim of core frame 22, and gasket 25 is located at diaphragm The upper surface of 21；

The pressure regulation bar 3 is made of screw rod 31, look nut 32 and spring 33, and the screw rod 31 is that middle part is equipped with flange The lower part of the plastics matter component of step, screw rod 31 is equipped with external screw thread, and the top of screw rod 31 is cylindrical rod-shaped, the upper end of screw rod 31 Tenon equipped with rectangle and screw hole；The look nut 32 is discoid plastics matter component, and 32 center of look nut is equipped with Internal thread through hole, sets that there are one the notches of rectangle to be known as guide groove 321 at the outer rim of look nut 32；The spring 33 is cylinder spiral shell Revolve compressed spring；Look nut 32 screws the lower part for being connected to screw rod 31, and spring 33 is located at below look nut 32；

The compression bar set 4 is hollow, open underneath, has the cylinder step cup-shaped plastics matter component on top, compression bar above The top center of set 4 is equipped with circular through-hole and is known as covering mesoporous 41, and compression bar covers the following of 4 post jambs and is equipped with and the internal thread suitable for reading The external screw thread of 141 corresponding matchings is known as rod set external screw thread 42, and compression bar, which covers, is equipped with upper and lower directions and the guide groove 321 at 4 internal chamber walls The convex ribs being slidably matched are known as guide rail 43；

The dial 5 is upper and lower opening, hollow and thin-walled, truncated cone plastics matter component, and the circular conical surface of dial 5 is equal It is laid with scale label；

The knob 6 is hollow, open underneath, has the polygon cup-shaped plastics matter component on top above, above knob 6 The through-hole of central rectangular is known as button rod aperture 62, and the side above knob 6 is additionally provided with fan-shaped through-hole and is known as form 61；

Spool 2 is located at the upper accent 14 of valve body 1 at throttling chamber 13, and the core frame 22 and strainer 24 are located at the upper accent 14 are located at the junction of import 11, the lower end of the dnockout core 23 in throttling chamber 13, and pressure regulation bar 3 is located at the upper of the diaphragm 21 Side, the upper surface of the lower end of the spring 33 and the diaphragm 21 central contact；Compression bar set 4 through the rod set external screw thread 42 with it is suitable for reading The fixation of internal thread 141, which screws, to be connected at the upper edge of the upper accent 14 and fixes the core frame 22；Knob 6 is located at compression bar The top of set 4, dial 5 are located between knob 6 and compression bar set 4, and dial 5 covers the upper surface of 4 with compression bar and is fixedly connected；The tune The upper end upward sliding of compression bar 3 passes through the set mesoporous 41, is fixedly connected with knob 6 through the button rod aperture 62；The pressure regulation spiral shell Mother 32 is located in compression bar set 4 to be connected through the guide groove 321,43 sliding gomphosis of guide rail.

Working principle and beneficial effect

When work, the high pressure water of valve body 1 is entered from import 11, is flowing through the spool at upper accent 14 and the chamber 13 that throttles It is that low pressure water is flowed out by outlet 12 through the throttling seam decompression when 2；

When hydraulic pressure increases at outlet 12, diaphragm 21 is swelled upwards by hydraulic pressure drives dnockout core 23 to move up, the bulb The throttling is stitched upwards and reduces or even closes, the low hydraulic pressure at outlet 12 is made to keep stablizing；

When need adjust decompression ratio when, manual rotation knob 6, from pressure regulation bar 3 screw rod 31 drive look nut 32 to Lower push the spring 33 increases the ratio pass of the stress and protuberance that change diaphragm 21 to the pressure above diaphragm 21 by spring 33 System, enables the pressure of the low hydraulic pressure at outlet 12 to adjust；

Guide groove 321 is with guide rail 43 for preventing look nut 32 from dallying with the rotation of knob 6 and the screw rod 31； Form 61 for when adjusting decompression ratio can ocular scale disk 5 scale as reference scale.

The present apparatus is simple in structure, reliable operation, and the effect by pressure regulation bar 3 and knob 6 to diaphragm 21 enables pressure reducing valve The adjusting of decompression ratio is carried out in site of deployment.

Claims (1)

1. a kind of pressure reducing valve of adjustable output pressure, including valve body (1), spool (2), pressure regulation bar (3), compression bar set (4), scale Disk (5) and knob (6), it is characterised in that：The valve body (1) be hollow, thin-walled, the copper alloy texture part in threeway tubulose, The channel of valve body (1) left part is import (11), and the channel of valve body (1) right part is outlet (12), the channel of valve body (1) central upper Channel for upper accent (14), valve body (1) central lower is throttling chamber (13), and the import (11) is through upper accent (14), throttling Chamber (13) is communicated with outlet (12)；It is known as internal thread suitable for reading (141) equipped with internal thread at the upper edge of the upper accent (14)；

The spool (2) is made of diaphragm (21), core frame (22), dnockout core (23), strainer (24) and gasket (25), the diaphragm (21) it is disc elastic rubber texture part；The core frame (22) be used to support diaphragm (21), core frame (22), dnockout core (23) and Strainer (24), and the plastics matter component for the upper accent (14) and the chamber (13) that throttles to be isolated；The dnockout core (23) is plastics The top of texture part, dnockout core (23) is that cylinder rod is known as core bar, and the top of dnockout core (23) is spherical referred to as bulb；The strainer (24) it is cylindrical annular stainless steel cloth；The gasket (25) is the stainless steel components of circular ring shape；Diaphragm (21) is located at core frame The upper surface of (22), dnockout core (23) slides through the center of core frame (22), upper end and the diaphragm (21) of the core bar of dnockout core (23) Be fixedly connected, the bulb of dnockout core (23) is located at below core frame (22), below the bulb and core frame (22) between set There is spacing to be known as the seam that throttles；Strainer (24) is located at the outer rim of core frame (22), and gasket (25) is located at the upper surface of diaphragm (21)；

The pressure regulation bar (3) is made of screw rod (31), look nut (32) and spring (33), and the screw rod (31) sets for middle part There are the plastics matter component of flange step, the lower part of screw rod (31) to be equipped with external screw thread, the top of screw rod (31) is cylindrical rod-shaped, spiral shell The upper end of bar (31) is equipped with the tenon and screw hole of rectangle；The look nut (32) is discoid plastics matter component, pressure regulation Nut (32) center is equipped with internal thread through hole, sets that there are one the notches of rectangle to be known as guide groove at the outer rim of look nut (32) (321)；The spring (33) is cylindroid helical-coil compression spring；Look nut (32) screws the lower part for being connected to screw rod (31), bullet Spring (33) is located at below look nut (32)；

The compression bar set (4) is hollow, open underneath, has the cylinder step cup-shaped plastics matter component on top, compression bar set above (4) top center is equipped with circular through-hole and is known as covering mesoporous (41), compression bar set (4) post jamb it is following be equipped with it is described it is suitable for reading in The external screw thread of screw thread (141) corresponding matching is known as rod set external screw thread (42), be equipped at compression bar set (4) internal chamber wall upper and lower directions, with The convex ribs that the guide groove (321) is slidably matched are known as guide rail (43)；

The dial (5) is upper and lower opening, hollow and thin-walled, truncated cone plastics matter component, and the circular conical surface of dial (5) is equal It is laid with scale label；

The knob (6) is hollow, open underneath, have the polygon cup-shaped plastics matter component on top above, and knob (6) is above The through-hole of central rectangular is known as button rod aperture (62), and the side of knob (6) above is additionally provided with fan-shaped through-hole and is known as form (61)；

Spool (2) is located at the upper accent (14) of valve body (1) at throttling chamber (13), and the core frame (22) and strainer (24) are located at institute The junction of accent (14) and import (11) is stated, the lower end of the dnockout core (23) is located in throttling chamber (13), pressure regulation bar (3) position Top in the diaphragm (21), the upper surface of the lower end of the spring (33) and the diaphragm (21) central contact；Compression bar set (4) It is connected at the upper edge of the upper accent (14) simultaneously through fixed screw of the rod set external screw thread (42) and internal thread suitable for reading (141) The core frame (22) is fixed；Knob (6) is located at the top of compression bar set (4), and dial (5) is located at knob (6) and compression bar set (4) Between, the upper surface of dial (5) and compression bar set (4) are fixedly connected；The upper end upward sliding of the pressure regulation bar (3) passes through the set Mesoporous (41) is fixedly connected through the button rod aperture (62) with knob (6)；The look nut (32) is located at warp in compression bar set (4) The guide groove (321), the connection of guide rail (43) sliding gomphosis.