CN201288868Y

CN201288868Y - Pressure reducing valve

Info

Publication number: CN201288868Y
Application number: CNU2008200627874U
Authority: CN
Inventors: 周伦富
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-03
Filing date: 2008-04-03
Publication date: 2009-08-12
Anticipated expiration: 2018-04-03

Abstract

The utility model relates to a compression release valve. A water shutoff baffle plate formed by valve seats is arranged between the lower end of a low pressure cavity and a high pressure cavity in the compression release valve. A water shutoff opening is formed by openings in the center of the water shutoff baffle plate. The water shutoff baffle plate is provided with through-water flow passages which take the water shutoff opening as the center to be distributed in radial pattern. The high pressure cavity is provided with a pressure sensing sealing through-water membrane which is used to seal the water shutoff baffle. The periphery of the pressure sensing sealing through-water membrane is compressed to be fixed between the valve seat and a lower clamping cap. The center of the pressure sensing sealing through-water membrane is compressed to be fixed between an inner clamping ring formed by a lower clamping cap body and the water shutoff baffle plate. The structure of the pressure sensing sealing through-water membrane and the water shutoff baffle which are arranged in the compression release valve of the utility model has buffer action for water pressure when opening or closing. Compared with the existing interception valve, the compression release valve cannot be easy to generate oscillation during the operation process; and the compression release valve also comprises the functions of the disconnecting valve; when used for the water purification machine system, the disconnecting valve can be not arranged on the front end of the compression release valve so as to greatly save cost.

Description

Reduction valve

Technical field

The utility model relates to a kind of reduction valve.

Background technique

Along with expanding economy, the trend that water resources situation worsens has appearred in many places, and shortage of water resources and pollution are more and more serious, and city dweller's drinking water safety problem highlights.At the secondary pollution problem of city tap-water and because source water pollutes the harmful matter that renews in tap water, more and more be that the domestic water purifying machine of core filter element enters huge numbers of families with the reverse osmosis membrane.Existing domestic water purifying machine is to be the core filter element with the reverse osmosis membrane, through after the multistage pretreatment and supercharging to tap water, enters reverse osmosis membrane unit again, the pure water that produces can meet the drinking water standard of developed country fully.But, end water stop valve should be set in existing domestic water purifying machine, also reduction valve to be set when network of rivers pipe pressure is higher, on the one hand, reduction valve adopts blocked or intercept type valve, the water hydraulic pressure instability that adopts the blocked valve to flow out through reduction valve can increase with the increase that flows to reduction valve hydraulic pressure, and security and stability is lower; Adopt the intercept type valve to form dither easily; On the other hand, reduction valve splits with the stop valve of cutting off the water supply, and the domestic water purifying machine cost is higher, is unfavorable for popularizing.

The model utility content

Technical problem to be solved in the utility model provides a kind of pressure limiting effect stability, is difficult for producing the reduction valve of vibrations; And, on described reduction valve, dispose water-breaking structure, replace the independent stop valve of cutting off the water supply that is provided with.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: reduction valve, comprise valve seat, be provided with the source water cavity in the valve seat, low-pressure cavity, the source water cavity, low-pressure cavity respectively with source water water intake, water outlet is connected, has the water shutoff baffle plate that constitutes by valve seat between low-pressure cavity lower end and the source water cavity, the perforate of described water shutoff baffle plate central position constitutes secondary valve port, having with secondary valve port on the water shutoff baffle plate is the main valve runner that the center distributes radially, be provided with the main valve diaphragm of main valve runner on the sealing water shutoff baffle plate in the water cavity of source, the main valve diaphragm periphery is fixed between valve seat and following friction top, the main valve diaphragm center has the perforate greater than secondary valve port, and the pressing diaphragm of this perforate periphery is tightly fixed on by between the friction top body constitutes down the interior hold-down ring and water shutoff baffle plate; The cavity that described down friction top and main valve diaphragm form constitutes balance and helps the envelope chamber, and balance helps the envelope chamber by the Kong Yuyuan water cavity connection of damming of source water; Described low-pressure cavity upper end is provided with the pressure-sensitive diaphragm that bears hydraulic pressure, the pressure-sensitive diaphragm periphery is fixed between valve seat and last friction top, also be provided with the center controlling rod that passes secondary valve port in the described valve seat, fixedly connected with the pressure-sensitive diaphragm central position in the upper end that the center controlling rod is positioned at low-pressure cavity, the center controlling rod is positioned at the secondary valve film that lower end that balance helps the envelope chamber is furnished with the sealing pair valve port; Also be provided with the pressure-sensitive spring in the cavity that described upward friction top and pressure-sensitive diaphragm constitute, the pressure-sensitive both ends of the spring acts on pressure-sensitive diaphragm and last friction top inwall respectively.

The reduction valve of this programme is when opening water flowing, the water source uses back hydraulic pressure to reduce in the low-pressure cavity, the center controlling rod moves down under the effect of pressure-sensitive spring force and pushes secondary valve film open, balance helps in the envelope chamber water source from secondary valve port inflow low-pressure cavity, this moment, balance helped in the envelope chamber because water source to flow out, its hydraulic pressure reduces, when balance help the envelope chamber to the active force of main valve diaphragm less than source water cavity hydraulic pressure during to the active force of main valve diaphragm, main valve diaphragm moves down opens the main valve runner; And the periphery of the main valve diaphragm in this reduction valve is fixed between valve seat and following friction top, the center is fixed between the interior hold-down ring and water shutoff baffle plate that are made of following friction top body, when reduction valve is opened because main valve diaphragm center is fixed on the water shutoff baffle plate, has the main valve runner that distributes radially on the water shutoff baffle plate, the main valve runner is along the radially-arranged list structure of radiation center, the radial length of this main valve runner is less than the radius length of main valve diaphragm, so that sealing, its periphery moved apart each water flowing runner earlier when therefore main valve diaphragm moved down under hydraulic action, main valve diaphragm moves apart the main valve runner by periphery gradually to the center subsequently, keeps the water route of reduction valve to be in opening state; When hydraulic pressure reached setting value in low-pressure cavity, hydraulic pressure moved up the center controlling rod to the elastic force that the active force of pressure-sensitive diaphragm overcomes the pressure-sensitive spring in the low-pressure cavity, till secondary valve film sealing pair valve port; Behind the secondary valve film sealing pair valve port, balance helps hydraulic pressure in the envelope chamber because source water raises by the injection of damming mouthful of source water, until with source water hydraulic balance, at this moment, main valve diaphragm seals the main valve runner to periphery from central division gradually under himself elastic-restoring force and the acting in conjunction of main valve runner Sealing Surface area pressure difference, realize pressure-reducing function thus; Simultaneously, the structure of the main valve diaphragm of reduction valve and water shutoff baffle plate and fit system all have buffering when primary valve is opened or closed effect, this reduction valve operates steadily, and is difficult for producing vibrations.

Described center controlling rod sidewall has the balanced runner that at least one indent groove constitutes, and the cross section of balanced runner increases gradually from secondary valve film one end a to end of connecting low-pressure cavity; And the cross section gross area of described balanced runner is greater than the dam cross section gross area in hole of source water.Balance that this structure helps to be adjusted at secondary valve port when opening helps in the envelope chamber because source water flows out the minimizing speed of hydraulic pressure in its that causes, and then the regulation and control balance helps and seals that hydraulic pressure helps the unlatching of main valve runner to the speed that reduces of main valve diaphragm active force in the chamber; Vice versa.

Described upward friction top inwall and pressure-sensitive spring contact position are provided with the spring casting die, have by the Regulation spring casting die above the spring casting die to move back and forth the control piece of cutting off the water supply that the sense of control pressing spring is changed between compressive state, nature.This control piece of cutting off the water supply makes reduction valve have the function of cutting off the water supply, when needs disconnect the water route, only need Regulation spring casting die sense of control pressing spring to move up and return to nature, the state that does not promptly have compression, even the interior hydraulic pressure of low-pressure cavity this moment reduces, the pressure-sensitive spring can not promote the center controlling rod yet and move downward, and secondary valve port is in the state of secondary valve film sealing always under the effect that is helping the envelope spring, and then make main valve diaphragm also be in the state of sealing primary valve, realize normally closed stop valve function; When this reduction valve normally uses, only need Regulation spring casting die sense of control pressing spring to move down to be in its pre-compressed state can realize the relief valve function of often opening.

The described control piece of cutting off the water supply is positioned at spring casting die top, and the control piece of cutting off the water supply is furnished with the Joystick that the Regulation spring casting die moves back and forth.

Be fixed with secondary valve film fixed block on the described secondary valve film, secondary valve film fixed block lower end is provided with and helps the envelope spring, helps the envelope both ends of the spring to act on helping on the envelope spring pad spare of secondary valve film fixed block and following friction top inwall respectively.

Described down friction top with help envelope spring contacting point be provided with following friction top screw thread adjustable be connected help envelope spring adjusting element, help the envelope spring to seal spring pad spare and help and seal spring adjusting element apical grafting by helping.

The end face that described water shutoff baffle plate contacts with main valve diaphragm is a plane structure, and the main valve runner radially is strip along radiation center and is distributed on the water shutoff baffle plate, and described main valve diaphragm has the shape with water shutoff baffle plate coupling.

The end face that described water shutoff baffle plate contacts with main valve diaphragm is the structure of evagination, and the main valve runner radially is strip along radiation center and is distributed on the water shutoff baffle plate, and described main valve diaphragm has the shape with water shutoff baffle plate evagination structure matching.

The end face that described water shutoff baffle plate contacts with main valve diaphragm is the structure of indent, and the main valve runner radially is strip along radiation center and is distributed on the water shutoff baffle plate, and described main valve diaphragm has the shape with water shutoff baffle plate concave inward structure coupling.

To sum up, the beneficial effects of the utility model are:

1, the effect that the matching structure of the main valve diaphragm of setting and water shutoff baffle plate and matching way all have buffering in the reduction valve when reduction valve opens or cuts out makes this reduction valve operate steadily, and is difficult for producing vibrations.

2, this reduction valve has the function of cutting off the water supply, and promptly this reduction valve has also comprised the function of stop valve, and when being used for pure water machine system, this reduction valve front end can not established stop valve, has saved cost greatly.

Description of drawings

Fig. 1 is the utility model embodiment 1 a structural representation;

Fig. 2 is that the A-A of water shutoff baffle plate among Fig. 1 is to view;

Fig. 3 is the perspective view of Fig. 2;

Fig. 4 is the structural representation of center controlling rod among Fig. 1;

Fig. 5 is that the B-B of Fig. 4 is to view;

Fig. 6 is the perspective view of Fig. 4;

Fig. 7 is the utility model embodiment 1 each component assembling schematic representation;

Fig. 8 is the utility model embodiment 2 a structural representation;

Fig. 9 is that the A-A of water shutoff baffle plate among Fig. 8 is to view;

Figure 10 is the perspective view of Fig. 9;

Figure 11 is the structural representation of center controlling rod among Fig. 8;

Figure 12 is the perspective view of Figure 11;

Figure 13 is that the B-B of Figure 11 is to view;

Figure 14 is the utility model embodiment 2 each component assembling schematic representation;

Figure 15 is cut off the water supply a structural representation after the control piece assembling of the utility model embodiment 2.

Mark and corresponding component title among the figure: 101-valve seat, 102-water outlet, the secondary valve port of 103-, the 104-low-pressure cavity, 105-center controlling rod, 106-pressure-sensitive diaphragm, 107-spring pad spare, 108-pressure-sensitive spring, 109-spring casting die, the 110-control piece of cutting off the water supply, the last friction top of 111-, 112-Joystick, the 113-set screw, 114-source water water intake, 115-source water cavity, the 116-main valve diaphragm, 117-water port, friction top under the 118-, the 119-fastening screw, the secondary valve film fixed block of 120-, the secondary valve film of 121-, 122-helps envelope spring adjusting element, 123-helps envelope spring pad spare, and 124-helps the envelope spring, 125-sealing O circle, press ring in the 126-, the 127-balance helps envelope chamber, the 128-source water hole of damming, 129-water shutoff baffle plate, 130-main valve runner, 131-main valve external port, 132-balanced runner, the 133-port that is threaded, the 201-valve seat, the 202-water outlet, the secondary valve port of 203-, 204-low-pressure cavity, 205-center controlling rod, the 206-pressure-sensitive diaphragm, 207-spring pad spare, 208-pressure-sensitive spring, 209-spring casting die, the 210-control piece of cutting off the water supply, the last friction top of 211-, 214-source water water intake, 215-source water cavity, the 216-main valve diaphragm, 217-water port, friction top under the 218-, the 219-fastening screw, the secondary valve film fixed block of 220-, the secondary valve film of 221-, 222-help envelope spring adjusting element, 223-helps envelope spring pad spare, 224-helps the envelope spring, and 225-sealing O circle presses ring in the 226-, the 227-balance helps the envelope chamber, the 228-source water hole of damming, 229-water shutoff baffle plate, 230-nut, the 231-control piece port of cutting off the water supply, 232-main valve runner, 233-main valve external port, 234-balanced runner, the 235-positioning convex of cutting off the water supply, the 236-Joystick.

Embodiment

Embodiment 1:

Extremely shown in Figure 7 as Fig. 1, reduction valve of the present utility model comprises valve seat 101, be provided with source water cavity 115 in the valve seat 101, low-pressure cavity 104, source water cavity 115, low-pressure cavity 104 respectively with source water water intake 114, water outlet 102 is connected, has the water shutoff baffle plate 129 that constitutes by valve seat 101 between low-pressure cavity 104 lower ends and the source water cavity 115, the perforate of described water shutoff baffle plate 129 central positions constitutes secondary valve port 103, having with secondary valve port 103 on the water shutoff baffle plate 129 is the main valve runner 130 that the center distributes radially, be provided with the main valve diaphragm 116 of main valve runner 130 on the sealing water shutoff baffle plate 129 in the source water cavity 115, main valve diaphragm 116 peripheries are fixed between valve seat 101 and following friction top 118, main valve diaphragm 116 centers have the perforate greater than secondary valve port 103, and the pressing diaphragm of this perforate periphery is tightly fixed on down between the interior hold-down ring 126 and water shutoff baffle plate 129 of friction top 118 bodies formation; The cavity that described down friction top 118 and main valve diaphragm 116 form constitutes balance and helps envelope chamber 127, and balance helps envelope chamber 127 to connect with source water cavity 115 by the source water hole 128 of damming; Described low-pressure cavity 104 upper ends are provided with the pressure-sensitive diaphragm 106 that bears hydraulic pressure, pressure-sensitive diaphragm 106 peripheries are fixed between valve seat 101 and last friction top 110, also be provided with the center controlling rod 105 that passes secondary valve port 103 in the described valve seat 101, fixedly connected with pressure-sensitive diaphragm 106 central positions in the upper end that center controlling rod 105 is positioned at low-pressure cavity 104, center controlling rod 105 is positioned at the secondary valve film 121 that lower end that balance helps envelope chamber 127 is equipped with sealing pair valve port 103; Described center controlling rod 105 sidewalls have the balanced runner 132 that at least one indent groove constitutes, and the cross section gross area of described balanced runner 132 increases from secondary valve film one end a to end of connecting low-pressure cavity 104 gradually greater than the dam cross section gross area in hole 128 and the cross section of balanced runner 132 of source water.Also be provided with pressure-sensitive spring 108 in the cavity that described upward friction top 110 and pressure-sensitive diaphragm 106 constitute, pressure-sensitive spring 108 two ends act on pressure-sensitive diaphragm 106 and last friction top 110 inwalls by spring pad spare 109 and spring casting die 107 respectively; Described spring casting die 109 tops have by Regulation spring casting die 109 move back and forth the control piece 110 of cutting off the water supply that sense of control pressing spring 108 is changed between compressive state, natures; The described control piece 110 of cutting off the water supply is positioned at spring casting die 109 tops, has Joystick 112 that Regulation spring casting die 109 moves back and forth and the set screw 113 that Joystick 112 is fixed in adjusted position in the control piece 110 of cutting off the water supply.Be fixed with secondary valve film fixed block 120 on the described secondary valve film 121, secondary valve film fixed block 120 lower ends are provided with and help envelope spring 124, help envelope spring 124 two ends to act on secondary valve film fixed block 120 and following friction top 118 inwalls respectively; Described down friction top 118 with help envelope spring 124 contacting points be provided with following friction top 118 screw threads adjustable be connected help envelope spring adjusting element 122, help and seal spring 124 lower ends and seal spring pad spare 123 and act on to help and seal spring adjusting element 122 upper surfaces by helping.

The end face that the water shutoff baffle plate of present embodiment reduction valve contacts with main valve diaphragm is a plane structure, and the main valve runner radially is strip along radiation center and is distributed on the water shutoff baffle plate, and described main valve diaphragm has the shape with water shutoff baffle plate coupling; Perhaps the end face that contacts with main valve diaphragm of water shutoff baffle plate is the structure of evagination, and the main valve runner radially is strip along radiation center and is distributed on the water shutoff baffle plate, and described main valve diaphragm has the shape with water shutoff baffle plate evagination structure matching; Perhaps the end face that contacts with main valve diaphragm of water shutoff baffle plate is the structure of indent, and the main valve runner radially is strip along radiation center and is distributed on the water shutoff baffle plate, and described main valve diaphragm has the shape with water shutoff baffle plate concave inward structure coupling.Balance being helped in the reduction valve of present embodiment the source water of envelope chamber and the connection of the source water cavity hole of damming can be to be made of the water flowing runner that forms on the valve seat, also can be to constitute by the perforate on the main valve diaphragm, this perforate and source water cavity, balance help the envelope chamber to connect, and the number of this perforate can be one or more.

Embodiment 2:

Extremely shown in Figure 15 as Fig. 8, present embodiment and embodiment's 1 difference is, embodiment 1 the control piece of cutting off the water supply is to be connected in the adjustable mode of screw thread with last friction top, has a concave inward structure that is polygon prism on the last friction top, the lower end of Joystick is consistent with this indent polygon prism, by rotatable handle is cut off the water supply control piece rotation of can regulate, play the compressive state of adjusting the pressure-sensitive spring, so reach secondary valve port Chang Kai and normally closed between state exchange and realize that further reduction valve is converted to the stop valve function by relief valve function.The control piece 210 of cutting off the water supply of present embodiment directly passes the control piece port 231 of cutting off the water supply of friction top, cut off the water supply and do not have substantive the connection between control piece 210 and the last friction top, when needs are regulated pressure-sensitive spring 208, directly down by putting in place and locating by rotating the positioning convex of to cut off the water supply, realization pressure-sensitive spring is finished precompression, and reduction valve is in the relief valve function state of often opening; Otherwise the adjusting Joystick makes the pressure-sensitive spring be returned to unpressed nature, and then this moment, reduction valve was in normally closed stop valve functional status.

The utility model is not limited only to the foregoing description, thereby also comprises the combination of each technical characteristics in the foregoing description, especially cut off the water supply control piece structure and realize the mode of reduction valve to the stop valve function conversion by the conversion between compression and nature of sense of control pressing spring.

Claims

1, reduction valve, comprise valve seat (101), be provided with source water cavity (115) in the valve seat (101), low-pressure cavity (104), source water cavity (115), low-pressure cavity (104) respectively with source water water intake (114), water outlet (102) is connected, has the water shutoff baffle plate (129) that constitutes by valve seat (101) between low-pressure cavity (104) lower end and the source water cavity (115), it is characterized in that, the perforate of described water shutoff baffle plate (129) central position constitutes secondary valve port (103), having with secondary valve port (103) on the water shutoff baffle plate (129) is the main valve runner (130) that the center distributes radially, be provided with sealing water shutoff baffle plate (129) in the source water cavity (115) and go up the main valve diaphragm (116) of main valve runner (130), main valve diaphragm (116) periphery is fixed between valve seat (101) and following friction top (118), main valve diaphragm (116) center has the perforate greater than secondary valve port (103), and the pressing diaphragm of this perforate periphery is tightly fixed on by between friction top (118) body constitutes down the interior hold-down ring (126) and water shutoff baffle plate (129); The cavity that described down friction top (118) and main valve diaphragm (116) form constitutes balance and helps envelope chamber (127), and balance helps envelope chamber (127) to connect with source water cavity (115) by the source water hole (128) of damming; Described low-pressure cavity (104) upper end is provided with the pressure-sensitive diaphragm (106) that bears hydraulic pressure, pressure-sensitive diaphragm (106) periphery is fixed between valve seat (101) and last friction top (110), also be provided with the center controlling rod (105) that passes secondary valve port (103) in the described valve seat (101), fixedly connected with pressure-sensitive diaphragm (106) central position in the upper end that center controlling rod (105) is positioned at low-pressure cavity (104), center controlling rod (105) is positioned at the secondary valve film (121) that lower end that balance helps envelope chamber (127) has sealing pair valve port (103); Also be provided with pressure-sensitive spring (108) in the cavity that described upward friction top (110) and pressure-sensitive diaphragm (106) constitute, pressure-sensitive spring (108) two ends act on pressure-sensitive diaphragm (106) and last friction top (110) inwall respectively.

2, reduction valve according to claim 1, it is characterized in that, described center controlling rod (105) sidewall has the balanced runner (132) that at least one indent groove constitutes, and the cross section gross area of described balanced runner (132) is greater than the dam cross section gross area in hole (128) of source water.

3, reduction valve according to claim 2 is characterized in that, the cross section gross area of described balanced runner (132) increases gradually from secondary valve film one end a to end of connecting low-pressure cavity (104).

4, according to any described reduction valve of claim 1 to 3, it is characterized in that, described upward friction top (110) inwall and pressure-sensitive spring (108) contact position are provided with spring casting die (109), have by Regulation spring casting die (109) above the spring casting die (109) to move back and forth the control piece of cutting off the water supply (110) that sense of control pressing spring (108) is changed between compressive state, nature.

5, reduction valve according to claim 4 is characterized in that, the described control piece of cutting off the water supply (110) is positioned at spring casting die (109) top, has the Joystick (112) that Regulation spring casting die (109) moves back and forth in the control piece of cutting off the water supply (110).

6, according to any described reduction valve of claim 1 to 3, it is characterized in that, be fixed with secondary valve film fixed block (120) on the described secondary valve film (121), secondary valve film fixed block (120) lower end is provided with and helps envelope spring (124), helps envelope spring (124) two ends to act on secondary valve film fixed block (120) respectively and is located at down helping of friction top (118) inwall and seal spring pad spare (123).

7, reduction valve according to claim 6, it is characterized in that, described down friction top (118) with help envelope spring (124) contacting point be provided with following friction top (118) screw thread adjustable be connected help envelope spring adjusting element (122), help envelope spring (124) lower end to seal spring pad spare (123) and act on to help and seal on the spring adjusting element (122) by helping.

8, according to any described reduction valve of claim 1 to 3, it is characterized in that, the end face that described water shutoff baffle plate (129) contacts with main valve diaphragm (116) is a plane structure, main valve runner (130) radially is strip along radiation center and is distributed on the water shutoff baffle plate (129), and described main valve diaphragm (116) has the shape with water shutoff baffle plate (129) coupling.

9, according to any described reduction valve of claim 1 to 3, it is characterized in that, the end face that described water shutoff baffle plate (129) contacts with main valve diaphragm (116) is the structure of evagination, main valve runner (130) radially is strip along radiation center and is distributed on the water shutoff baffle plate (129), and described main valve diaphragm (116) has the shape with water shutoff baffle plate (129) evagination structure matching.

10, according to any described reduction valve of claim 1 to 3, it is characterized in that, the end face that described water shutoff baffle plate (129) contacts with main valve diaphragm (116) is the structure of indent, main valve runner (130) radially is strip along radiation center and is distributed on the water shutoff baffle plate (129), and described main valve diaphragm (116) has the shape with water shutoff baffle plate (129) concave inward structure coupling.