CN204114273U - Adjustable differential pressure balancing valve - Google Patents
Adjustable differential pressure balancing valve Download PDFInfo
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- CN204114273U CN204114273U CN201420518086.2U CN201420518086U CN204114273U CN 204114273 U CN204114273 U CN 204114273U CN 201420518086 U CN201420518086 U CN 201420518086U CN 204114273 U CN204114273 U CN 204114273U
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Abstract
The utility model discloses a kind of adjustable differential pressure balancing valve, relate to a kind of can be used in closed circulation system the pipeline valve that bypass flow pre-equilibration and maintenance supply backwater pressure reduction constant, mainly be made up of valve body, valve seat, flap, valve rod, hand wheel component and spring balancing assembly etc., set for the pressure difference between water return pipeline in conjunction with diaphragm by spring balancing assembly, and maintain for pressure reduction constant between backwater; In addition, valve is provided with hand wheel component, the operating pressure differential value of the next constant valve of tension force of presetting balance spring is carried out, the advantages such as the adjustable differential pressure balancing valve after improvement also has reasonable in design, rapid operation, sealing is reliable, cost of production is low by hand wheel component.
Description
Technical field
The utility model relates to the balancing valve structure in a kind of pipeline valve, refers in particular to adjustable differential pressure balancing valve.
Background technique
Differential pressure balancing valve be a kind of in closed circulation system to bypass flow pre-equilibration and maintain for the constant pipeline valve of backwater pressure reduction, it can effectively be avoided velocity of medium too high and cause pipeline noise.Simultaneously, when the near-end user pressure reduction in pipe-line system is excessive, remote subscriber pressure reduction is little, outer net pressure reduction is uneven, near-end and remote subscriber room temperature is just easily caused to produce sequential, if adopt indirect heating system, due to the intermittent time of arriving heating when the long meeting of sequential causes remote subscriber also not reach user's request, make remote subscriber cannot reach heating requirement, as when Frequency Conversion Variable Water Flow regulates due to the revolution having arrived heat-source Cycles water pump when the long remote subscriber of sequential does not also reach user's request turn down time, make converter plant cannot play due effect, therefore, just well can ensure that near-end is identical with the piping flow pressure reduction of far-end by differential pressure balancing valve, make remote subscriber indoor heating normal, and the thermostatic valve in protective conduit system, avoid producing pipeline noise.At present, the structure of differential pressure balancing valve is more, as disclosed China Patent No. be 201220460692.4 " differential pressure balancing valve " and disclosed China Patent No. be 201220376805.2 " a kind of pressure reduction bypass equilibrium valve " all disclose a kind of balancing valve structure be made up of valve body, valve seat, flap and valve rod etc., be equipped with in this equilibrium valve and work in coordination and the diaphragm of mineralization pressure balance and spring balancing assembly, thus effectively ensure the pressure balance in equilibrium valve work.And along with the continuous expansion in equilibrium valve market, more Consumer also urgently wishes that valve manufacturer can release the equilibrium valve with different structure and mode of operation more, to meet market demand; Meanwhile, existing equilibrium valve is all communicated with entrance point respectively by external pipe and outlet end is constant to carry out confession backwater pressure reduction, and the problems such as circuit design is complicated, operation effort, too high, the easy generation leakage of cost of production, make troubles to use.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defect of prior art and provides a kind of rational in infrastructure, rapid operation, sealing is reliable, cost of production is low adjustable differential pressure balancing valve.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of adjustable differential pressure balancing valve, comprises valve body, valve seat, flap, valve rod and hand wheel component; Described body top is provided with the diaphragm seat that sealing is installed, and this diaphragm seat top is provided with the diaphragm gland that sealing is installed, and this pressing diaphragm tops is provided with the valve gap that sealing is installed; Be provided with the entrance point interconnected and outlet end in described valve body, between inlet/outlet end, be provided with valve seat; Described flap is arranged on valve rod lower end, and forms to seal with valve seat open and close by valve rod drives; Hard-wired diaphragm is provided with between described diaphragm seat and diaphragm gland, this diaphragm is separated into mutual disconnected epicoele and cavity of resorption respectively by diaphragm seat He in diaphragm gland, cover the joint being provided with and connecting epicoele at pressing diaphragm, in epicoele, be provided with the spring balancing assembly coordinating mineralization pressure to balance with described diaphragm; Fix with diaphragm in the middle part of described valve rod and install; Described spring balancing assembly comprises rotary seal and is arranged on regulating valve stem in valve gap, this regulating valve stem upper end is stretched out valve gap and is connected hand wheel component, regulating valve stem lower end is stretched into diaphragm gland and to be threaded spring seat, this spring seat is arranged on valve rod upper end, below spring seat, be provided with balance spring, this balance spring one end pushing installation on spring seat, the other end pushing installation in diaphragm gland in shoulder on; Be provided with pod apertures in described valve rod, the upper end-hole of this pod apertures is connected with described cavity of resorption, exposes after the lower end mouth of pod apertures passes valve rod bottom surface and flap bottom surface.
It is that the end face contacted with diaphragm gland at diaphragm seat is provided with a circle and installs annular groove that the sealing of described diaphragm between diaphragm seat with diaphragm gland fixedly mounts structure, described diaphragm bottom surface is provided with the disjunctor ring muscle that a circle protrudes downwards, this diaphragm is fixed in described installation annular groove by disjunctor ring muscle setting-in, and is fixed by diaphragm gland.
Described pod apertures cross section is in " ┌ " type, and the top cross port being somebody's turn to do " ┌ " type pod apertures is upper end-hole, and the vertical port in bottom of " ┌ " type pod apertures is lower end mouth.
The mounting structure of described spring seat and valve rod upper end is that spring seat is threaded in valve rod upper end, is also provided with stop jump ring in valve rod upper end portion.
"O"-ring is provided with between described valve rod and diaphragm seat.
Described hand wheel component comprises the handwheel that the handwheel seat that is fixedly mounted on valve gap upper end and rotary type are fastened and connected on handwheel seat, is respectively equipped with the plectrum forming and stir rotation and dial between this handwheel and handwheel seat; Described handwheel and regulating valve stem upper end are in transmission connection, and are arranged with aperture numerical value display circle outside handwheel.
Be provided with the water port that the line of shaft axis and inlet/outlet end is perpendicular in described valve body, described valve seat is the annular groove being arranged on water port end face.
Described flap bottom surface is provided with the equipped boss that to match with described valve seat, and this boss bottom surface is provided with a circle and does to seal the seal ring contacted with valve seat.
Described diaphragm seat sealing is inserted in the mounting hole of body top, between diaphragm seat and body top, be provided with locking nut.
Being provided with between described flap with valve rod lower end fixes be connected flap gland.
Compared with prior art, the utility model is mainly provided with spring balancing assembly in equilibrium valve, set for the pressure difference between water return pipeline by spring balancing assembly in conjunction with diaphragm, when the thermostatic valve in pipe-line system room temperature reach setting value close gradually time, the pressure reduction between backwater that supplies in the region at valve place rises, pressure of supply water will be passed in the epicoele above diaphragm by joint, and pressure of return water is directly delivered in the cavity of resorption below diaphragm by the pod apertures water conservancy diversion in valve rod, on diaphragm, pressure difference between lower acts on valve rod, ovable valve stem will be with to close circling water flow rate passage downwards gradually, until the tension force of the downward thrust of diaphragm and balance spring reaches the pressure difference of setting, can maintain for pressure reduction constant between backwater, in addition, valve is provided with hand wheel component, the operating pressure differential value of the next constant valve of tension force of presetting balance spring is carried out, the advantages such as the adjustable differential pressure balancing valve after improvement also has reasonable in design, rapid operation, sealing is reliable, cost of production is low by hand wheel component.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is the structural representation (pod apertures analyses and observe state) of valve rod.
Fig. 3 is the sectional structure schematic diagram of flap.
Fig. 4 is the sectional structure schematic diagram of adjusting screw rod.
Fig. 5 is the sectional structure schematic diagram of hand wheel component.
Fig. 6 is the structural representation of dial.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Fig. 1 ~ Fig. 6, 1. valve body, 2. flap, 3. flap gland, 4. valve rod, 5. locking nut, 6. "O"-ring, 7. diaphragm seat, 8. press table, 9. diaphragm, 10. top board, 11. diaphragm glands, 12. balance springs, 13. joints, 14. adjusting screw rods, 15. spring seats, 16. stop jump rings, 17. valve gaps, 18. handwheel seats, 19. housing screws, 20. handwheels, 21. aperture numerical value display circles, 22. epicoeles, 23. cavity of resorptions, 24. pod apertures, 25. seal rings, 26. valve seats, 27. water ports, 28. mounting grooves, 29. boss, 30. apertures, 31. top covers, 32. plectrums, 33. dials.
Adjustable differential pressure balancing valve, relate to a kind of can be used for the pipeline valve that bypass flow pre-equilibration and maintenance supply backwater pressure reduction constant in closed circulation system, its structure is mainly made up of valve body 1, valve seat 26, flap 2, valve rod 4 and hand wheel component etc.
Described valve body 1 is straight-through type valve body, and be namely provided with the through entrance point of level and outlet end in valve body, be set to entrance point with the left end shown in Fig. 1, right-hand member is set to outlet end, and inlet/outlet end all adopts thread connecting mode.
Between inlet/outlet end, water port 27 is provided with in described valve body 1, line between the shaft axis of this water port and inlet/outlet end is perpendicular, be provided with valve seat 26 at the end face of water port 27, this valve seat is the annular groove of a circle centered by the shaft axis of water port 27.
Described valve body 1 top is provided with the diaphragm seat 7 that sealing is installed, its mounting structure is: diaphragm seat 7 is inserted in the mounting hole at valve body 1 top, between diaphragm seat 7 with valve body 1 top, be provided with the locking nut 5 be threaded again, and also need between diaphragm seat 7 and valve body 1 to arrange "O"-ring 6 to promote connection sealing between the two; Described diaphragm seat 7 top is provided with the diaphragm gland 11 that screw thread screwing hermetic is installed, and this pressing diaphragm tops is provided with the valve gap 17 that screw thread screwing hermetic is installed again.
Hard-wired diaphragm 9 is provided with between described diaphragm seat 7 and diaphragm gland 11, its mounting structure is: the end face that diaphragm seat 7 contacts with diaphragm gland 11 is provided with a circle and installs annular groove, diaphragm 9 bottom surface is then provided with the disjunctor ring muscle that a circle protrudes downwards, this diaphragm 9 is fixed on by disjunctor ring muscle setting-in to install in annular groove, the diaphragm gland 11 screwed by screw thread is again fixed, therefore makes to be separated into mutual disconnected epicoele 22 and cavity of resorption 23 respectively in diaphragm seat 7 and in diaphragm gland 11 by the installation of diaphragm 9.
Described diaphragm gland 11 is provided with the joint 13 connecting epicoele 22, and this joint can connect honeycomb duct, and then interconnects with the valve of supply channel.
In the equilibrium valve that described valve rod 4 is vertically installed, and realize vertical lift and move, described valve rod 4 lower end is connected with flap 2 through diaphragm seat 7, this flap is positioned at above valve seat 26, its end face is provided with mounting groove 28 as shown in Figure 3, the bottom land center of this mounting groove is provided with the aperture 30 running through flap bottom surface, flap 2 bottom surface is provided with the annular boss 29 matching equipped with the valve seat 26 of annular groove shape structure, be provided with a circle to do to seal the seal ring 25 contacted with the annular groove bottom land of valve seat 26 in boss bottom surface, valve rod 4 lower end is then fitted in the mounting groove 28 of flap 2 end face, the flap gland 3 be tightened in mounting groove by screw thread again realizes being fixedly connected with between the two, therefore flap 2 can drive to be combined to be formed with valve seat 26 by valve rod 4 and seals switching motion, the described valve rod 4 through diaphragm seat 7 need arrange larger diameter so that sealing contact is on diaphragm seat 7, therefore also need be provided with the "O"-ring 6 contacted with diaphragm seat 7 on the outer peripheral surface of this place's valve rod 4, using the dynamic seal as valve rod 4 lifting moving, therefore the scope of cavity of resorption 23 is enclosed spaces that the "O"-ring 6 contacted by diaphragm 9, diaphragm seat 7 and sealing is formed.
The pod apertures 24 as shown in Figure 1 and Figure 2 in " ┌ " type is provided with in described valve rod 4 lower end, the top cross port being somebody's turn to do " ┌ " type pod apertures is upper end-hole, namely run through from valve rod 4 side, and realize being communicated with cavity of resorption 23, the vertical port in bottom being somebody's turn to do " ┌ " type pod apertures 24 is lower end mouth, namely run through from valve rod 4 bottom surface, and also do to run through with the aperture 30 on flap 2 simultaneously, therefore can be connected with entrance point after the hermetically enclosed valve seat 26 of flap 2; Described valve rod 4 stretches in epicoele 22 through diaphragm 9, also needs to arrange top board 10 and press table 8 to realize being connected and fixed between the two between valve rod 4 and diaphragm 9.
The spring balancing assembly coordinating mineralization pressure to balance with diaphragm 9 is provided with in described epicoele 22, this spring balancing assembly comprises rotary seal and is arranged on regulating valve stem 14 in valve gap 17, therefore needs to arrange "O"-ring 6 between regulating valve stem and valve gap 17 using as dynamic seal; Described regulating valve stem 14 as Figure 1 and Figure 4, stretch out valve gap 17 and connect hand wheel component by its upper end, and after diaphragm gland 11 is stretched in regulating valve stem 14 lower end, this underpart is provided with tapped hole, is provided with the spring seat 15 installed with thread connecting mode in tapped hole; Described spring seat is threaded with valve rod 4 upper end again simultaneously, is also provided with stop jump ring 16, comes off to prevent the connection between spring seat 15 and valve rod 4 in valve rod 4 upper end portion; The balance spring 12 be sleeved on outside valve rod 4 is provided with below described spring seat 15, the upper end pushing installation of this balance spring is takeed in spring seat 15 upper and lower end pushing installation is in diaphragm gland 11, interior shoulder is just in time positioned at above diaphragm 9, makes valve rod 4 possess the driving force moved up all the time by the elastic force of balance spring 12; Therefore rotate convert rotational motion can be made after regulating valve stem 14 to be that the vertical lift of spring seat 15 moves, and then band ovable valve stem 4 forms synchronizing moving, now can carry out the adjustment of valve rod pretightening force.
Described hand wheel component as shown in Figure 5, it comprises the handwheel seat 18 that is fixedly mounted on valve gap 17 upper end and rotary type and to be fastened and connected the handwheel 20 on handwheel seat, plectrum 32 is provided with in this handwheel, corresponding be provided with on handwheel seat 18 stir by plectrum 32 and realize rotate dial 33, outside handwheel 20, be also arranged with aperture numerical value display circle 21, therefore the combination that rotation handwheel 20 shows circle 21 by dial 33 and aperture numerical value indicates current valve opening state simultaneously; Described handwheel 20 is in transmission connection by spline form with regulating valve stem 14 upper end, then realizes fastening by housing screw 19, and closes through top cover 31, therefore rotation handwheel 20 can drive regulating valve stem 14 to form synchronous axial system.
Working principle of the present utility model is: this equilibrium valve is arranged in water return pipeline, pressure of supply water in water return pipeline is delivered in the cavity of resorption 23 below diaphragm 9 by the pod apertures 24 in valve rod 4, pressure medium in supply channel is delivered in the epicoele 22 above diaphragm 9 by joint 13, when the pressure above diaphragm 9 is greater than pressure and the tension force of balance spring 12 of below, diaphragm 9 will be with ovable valve stem 4 to move downward, flap 2 thereupon downwards and reduce the area of water port 27, until the pressure reduction of diaphragm 9 upper and lower reaches design load; And hand wheel component is provided with at valve tip place, drive regulating valve stem 14 to rotate by hand wheel component, thus make spring seat 15 downwards or move upward and can set the pretightening force of balance spring 12.
Claims (10)
1. an adjustable differential pressure balancing valve, comprises valve body (1), valve seat (26), flap (2), valve rod (4) and hand wheel component; Described valve body (1) top is provided with the diaphragm seat (7) that sealing is installed, and this diaphragm seat top is provided with the diaphragm gland (11) that sealing is installed, and this pressing diaphragm tops is provided with the valve gap (17) that sealing is installed; Be provided with the entrance point and outlet end that interconnect in described valve body (1), between inlet/outlet end, be provided with valve seat (26); Described flap (2) is arranged on valve rod (4) lower end, and forms to seal with valve seat (26) open and close by valve rod drives; Hard-wired diaphragm (9) is provided with between described diaphragm seat (7) and diaphragm gland (11), this diaphragm is separated into mutual disconnected epicoele (22) and cavity of resorption (23) respectively by diaphragm seat (7) and in diaphragm gland (11), diaphragm gland (11) is provided with the joint (13) connecting epicoele (22), in epicoele (22), is provided with the spring balancing assembly coordinating mineralization pressure to balance with described diaphragm (9); Described valve rod (4) middle part fixes with diaphragm (9) and installs, and it is characterized in that:
A, described spring balancing assembly comprise rotary seal and are arranged on regulating valve stem (14) in valve gap (17), this regulating valve stem upper end is stretched out valve gap (17) and is connected hand wheel component, regulating valve stem (14) lower end is stretched into diaphragm gland (11) and to be threaded spring seat (15), this spring seat is arranged on valve rod (4) upper end, be provided with balance spring (12) in spring seat (15) below, this balance spring one end pushing installation is on spring seat (15), on the interior shoulder of the other end pushing installation in diaphragm gland (11);
Be provided with pod apertures (24) in b, described valve rod (4), the upper end-hole of this pod apertures is connected with described cavity of resorption (23), exposes after the lower end mouth of pod apertures (24) passes valve rod (4) bottom surface and flap (2) bottom surface.
2. adjustable differential pressure balancing valve according to claim 1, it is characterized in that the described sealing of diaphragm (9) between diaphragm seat (7) with diaphragm gland (11) fixedly mounts structure is that the end face contacted with diaphragm gland (11) at diaphragm seat (7) is provided with a circle and installs annular groove, described diaphragm (9) bottom surface is provided with the disjunctor ring muscle that a circle protrudes downwards, this diaphragm (9) is fixed in described installation annular groove by disjunctor ring muscle setting-in, and is fixed by diaphragm gland (11).
3. adjustable differential pressure balancing valve according to claim 1, it is characterized in that described pod apertures (24) cross section is in " ┌ " type, the top cross port being somebody's turn to do " ┌ " type pod apertures (24) is upper end-hole, and the vertical port in bottom of " ┌ " type pod apertures (24) is lower end mouth.
4. adjustable differential pressure balancing valve according to claim 1, it is characterized in that described spring seat (15) is that spring seat (15) is threaded in valve rod (4) upper end with the mounting structure of valve rod (4) upper end, be also provided with stop jump ring (16) in valve rod (4) upper end portion.
5. adjustable differential pressure balancing valve according to claim 1, is characterized in that being provided with "O"-ring (6) between described valve rod (4) and diaphragm seat (7).
6. adjustable differential pressure balancing valve according to claim 1, it is characterized in that described hand wheel component comprises the handwheel seat (18) that is fixedly mounted on valve gap (17) upper end and rotary type and to be fastened and connected the handwheel (20) on handwheel seat, between this handwheel and handwheel seat (18), be respectively equipped with the plectrum (32) and dial (33) that form and stir rotation; Described handwheel (20) and regulating valve stem (14) upper end are in transmission connection, and are arranged with aperture numerical value display circle (21) outside handwheel (20).
7. adjustable differential pressure balancing valve according to claim 1, it is characterized in that being provided with in described valve body (1) water port (27) that the line of shaft axis and inlet/outlet end is perpendicular, described valve seat (26) is for being arranged on the annular groove of water port (27) end face.
8. adjustable differential pressure balancing valve according to claim 1, it is characterized in that described flap (2) bottom surface is provided with the boss (29) matching equipped with described valve seat (26), this boss bottom surface is provided with a circle and does to seal the seal ring (25) contacted with valve seat (26).
9. adjustable differential pressure balancing valve according to claim 1, is characterized in that described diaphragm seat (7) sealing is inserted in the mounting hole at valve body (1) top, is provided with locking nut (5) between diaphragm seat (7) and valve body (1) top.
10. adjustable differential pressure balancing valve according to claim 1, it is characterized in that described flap (2) be provided with between valve rod (4) lower end fix be connected flap gland (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420518086.2U CN204114273U (en) | 2014-09-11 | 2014-09-11 | Adjustable differential pressure balancing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420518086.2U CN204114273U (en) | 2014-09-11 | 2014-09-11 | Adjustable differential pressure balancing valve |
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| Publication Number | Publication Date |
|---|---|
| CN204114273U true CN204114273U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420518086.2U Active CN204114273U (en) | 2014-09-11 | 2014-09-11 | Adjustable differential pressure balancing valve |
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| CN (1) | CN204114273U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578348A (en) * | 2018-11-23 | 2019-04-05 | 中国航发北京航科发动机控制***科技有限公司 | A kind of air pressure sense device |
| CN110822144A (en) * | 2019-06-27 | 2020-02-21 | 杭州春江阀门有限公司 | Constant flow valve |
| WO2021068863A1 (en) * | 2019-10-10 | 2021-04-15 | 浙江鑫帆暖通智控股份有限公司 | Self-balancing pipeline apparatus |
-
2014
- 2014-09-11 CN CN201420518086.2U patent/CN204114273U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578348A (en) * | 2018-11-23 | 2019-04-05 | 中国航发北京航科发动机控制***科技有限公司 | A kind of air pressure sense device |
| CN109578348B (en) * | 2018-11-23 | 2020-09-15 | 中国航发北京航科发动机控制***科技有限公司 | Air pressure sensing device |
| CN110822144A (en) * | 2019-06-27 | 2020-02-21 | 杭州春江阀门有限公司 | Constant flow valve |
| WO2021068863A1 (en) * | 2019-10-10 | 2021-04-15 | 浙江鑫帆暖通智控股份有限公司 | Self-balancing pipeline apparatus |
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