CN205578835U - Vertical pulling formula electric two way valve - Google Patents

Abstract

The utility model discloses a vertical pulling formula electric two way valve, the mountable is on the air conditioning equipment of heating ventilation air conditioning system end, its structure includes the valve body, a valve sea, the valve clack, the valve rod, valve gap and electric actuator etc, mainly with setting up the structural style that the valve clack adoption bipyramid facial features above the disk seat combines, constitute with lower taper surface by the integrative last taper surface that links to each other promptly, and it is lighter than taper surface tapering down to go up toper face cone degree, the port is equipped with sealed face of awl mouthful form and last taper surface sealing contact on the disk seat again, but with the lower contactless relation of taper surface, this kind of structural style is favorable to improving the control range value of the discharge coefficient and the flow of valve, the vertical pulling formula electric two way valve that avoids traditional structure the valve flow coefficient appears and less and arouse when valve exit end flow is not enough, must improve that the velocity of flow of medium remedies the defect that the flow is not enough among the pipe -line system through the output who improves the water pump, consequently better reduction system energy consumption, also reduce user's energy loss.

Description

Straight pull electric two-way valve

Technical field

This utility model relates to a kind of HVAC valve type technical field, refers in particular to Straight pull electric two-way valve.

Background technology

Straight pull electric two-way valve is the one in many pipeline valves, is mostly applicable to heating ventilation air-conditioning system tail end air conditioner equipment, and the temperature such as air-conditioning box, Fresh air handling units, air processing machine etc. controls, and its structure mainly comprises two parts, i.e. YE and two-port valve；Wherein, YE typically uses synchronous machine drives, possesses spring reset and manual valve opening lever control function；Two-port valve is typically made up of valve body, valve gap, valve rod, spring and flap etc..In actually used, Straight pull electric two-way valve can match with temperature sensor, YE work is controlled by temperature sensor, thus drive the valve rod of two-port valve to lift, and then drive flap synchronization lifting to be in sealing contact keying valve seat, i.e. achieve the switch of two-port valve, also achieve the break-make of pipeline cold water or hot water, blown by fan coil again, to realize being automatically adjusted of temperature, mainly controlled rate-of flow and the temperature of each loop by YE and temperature sensor due to Straight pull electric two-way valve, therefore energy Appropriate application energy, reach energy-saving and cost-reducing, the purpose of intelligent management.

But, current Straight pull electric two-way valve generally also exists discharge coefficient and does not reaches under the regulation of JB/T10768 standard and valve-closed state leakage rate considerably beyond the problem of 0.5%Kv required value, when causing valve export end underfed owing to the discharge coefficient of valve is less, now it is accomplished by improving the output of water pump to improve the flow velocity of pipe-line system medium to the shortcoming making up underfed, therefore the energy consumption of system also improves, and causes the energy loss of user.

Disclosed China Patent No. is " the cryogenic globe valve flap Double-conical-surface fire proof seal structure " of 201120430419.2, although this structure also refer to a kind of Double-conical-surface valve flap structure being applied in cryogenic globe valve, but its biconical surface structure is separated into two and sentences and play double sealing effect, that is mainly for strengthening the sealing property between flap and valve seat, and any effect is not played for the raising of discharge coefficient and the range of accommodation value of flow, therefore also cannot solve the use defect of current Straight pull electric two-way valve.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the defect of prior art to provide a kind of discharge coefficient that can beneficially improve valve and the Straight pull electric two-way valve of flow adjustment range value.

Technical problem of the present utility model is achieved through the following technical solutions:

A kind of Straight pull electric two-way valve, including valve body, the limbers being arranged in valve body, seal the valve seat being embedded in limbers, the valve rod that lifting movable sealing is arranged in valve body, it is arranged on body top and connects the YE of valve rod upper end and be arranged on the flap of valve rod lower end, this flap is in sealing contact valve seat by valve rod lifting activity and opens and closes limbers, described valve seat upper port is provided with cone mouth shape sealing surface, described flap is located at above valve seat, this flap lower end is provided with and is in sealing contact upper conical of described cone mouth shape sealing surface and is arranged on upper conical basifacial inferior pyramidal face, this inferior pyramidal face and the cone mouth contactless relation of shape sealing surface, on, inferior pyramidal face is connected integrally；Described upper conical face cone degree is less than inferior pyramidal face cone degree.

Described cone mouth shape sealing surface tapering is 60 °, and described upper conical face cone degree is 30 °, and inferior pyramidal face cone degree is 135 °.

Being provided with in described valve body and seal the bonnet installed, described valve rod upper end connects YE through bonnet, is provided with and seals the filler installed between valve rod and bonnet.

The sealing installation structure of described filler is to be provided with packing ring and elastic pushing tow spring on packing ring in filler bottom, and filler top is provided with and is connected to bonnet upper end the gland described packing seal being enclosed in bonnet and gland nut.

Described filler cross section is V-shaped.

Being provided with the interlayer being separated by limbers in described valve body, this interlayer top is set to uuper valve chamber, and interlayer bottom is set to lower valve chamber, described limbers axial line and valve rod axle center line overlap.

Described body base is communicated with the end through hole of lower valve chamber, and this end through hole is provided with the valve gap being tightly connected and closes.

It is provided with the holding screw of interconnection, cutting ferrule nut between described YE and valve rod upper end, between YE and body top, is provided with the U-shaped ring of interconnection, hex nut.

Compared with prior art, this utility model mainly will be arranged on the version that the flap above valve seat uses Double-conical-surface to combine, i.e. it is made up of upper conical of connected one and inferior pyramidal face, and upper conical face cone degree is less than inferior pyramidal face cone degree, it is provided with cone mouth shape sealing surface in valve seat upper port again to contact with upper conical face seal, but relation contactless with inferior pyramidal face, this version is conducive to improving discharge coefficient and the range of accommodation value of flow of valve.When valve is tentatively opened, the outlet area between valve seat and flap is less, controls the flow value that valve output is less；When valve wide open, the outlet enlarged areas between valve seat and flap, now can control the valve bigger flow value of output, make the discharge coefficient value of valve reach standard-required, and the flow value scope from small to large of control valve effectively.

Accompanying drawing explanation

Fig. 1 is sectional structure schematic diagram of the present utility model.

Fig. 2 is the sectional structure schematic diagram of valve seat.

Fig. 3 is the sectional structure schematic diagram of flap.

Detailed description of the invention

By above-mentioned accompanying drawing, this utility model embodiment will be elaborated again below.

As shown in Fig. 1 ~ Fig. 3,1. valve gap, 2. "O"-ring, 3. valve body, 31. uuper valve chambers, 32. lower valve chambers, 4. valve seat, 41. cone mouth shape sealing surfaces, 5. locking nut, 6. flap, 61. upper conical, 62. inferior pyramidal faces, 7. bonnet, 8. cutting ferrule nut, 9. holding screw, 10. YE, 11. gland nuts, 12. glands, 13. fillers, 14. packing rings, 15. springs, 16. valve rods.

Straight pull electric two-way valve, as shown in Figure 1, it is a kind of temperature control valve being installed on heating ventilation air-conditioning system tail end air conditioner equipment, mainly it is made up of YE 10 and these two big parts of two-port valve, generally matches with temperature sensor, temperature sensor control YE 10 and work, thus realize the switch of two-port valve, also achieve the break-make of pipeline cold water or hot water, then blown by fan coil, to realize the purpose of temperature automatic adjustment.

Described two-way valve structure includes valve body 3, valve seat 4, flap 6, valve rod 16, bonnet 7 and valve gap 1 etc.；Wherein, valve body 3 is silk mouth attachment structure, the interlayer being separated by limbers it is provided with in valve body, this interlayer top is set to uuper valve chamber 31, interlayer bottom is set to lower valve chamber 32, upper and lower valve pocket is connected with entery and delivery port respectively, and the water channel connecting line between the axial line of limbers and entery and delivery port is in vertical state；Being communicated with the end through hole of lower valve chamber 32 bottom described valve body 3, this end through hole is provided with the valve gap 1 being tightly connected and closes.

Described valve seat 4 is threaded connection and seals and be embedded in limbers, is integrally connected so that valve seat 4 is fixing with valve body 3, and the upper port of this valve seat is provided with the cone mouth shape sealing surface 41 that tapering as shown in Figure 2 is 60 °, can make sealing with flap 6 and coordinate.

Described flap 6 is fixedly mounted on valve rod 16 lower end by locking nut 5, its position is placed exactly in above valve seat 4, the cross section of this flap 6 is tapered, being provided with in flap lower end and constitute, with cone mouth shape sealing surface 41, the upper conical face 61 being in sealing contact as shown in Figure 3 and be arranged on upper conical basifacial inferior pyramidal face 62, upper and lower taper surface is connected integrally；And, upper conical face 61 tapering is less than inferior pyramidal face 62 tapering, the most upper conical face 61 tapering is 30 °, it it is the critical piece of the cone mouth shape sealing surface 41 of contact valve seat 4, and inferior pyramidal face 62 tapering is 135 °, with the contactless relation of cone mouth shape sealing surface 41, the flap 6 using this uniqueness seals structure with valve seat 4 and is conducive to improving discharge coefficient and the range of accommodation value of flow of valve, the Straight pull electric two-way valve avoiding traditional structure occurs when valve flow coefficient is less and causes valve export end underfed, the flow velocity that must improve pipe-line system medium by improving the output of water pump makes up the defect of underfed, the most preferably reduce system energy consumption, also the energy loss of user is reduced.

Described valve rod 16 lifts movable sealing and is arranged in valve body 3, its axial line is overlapping with limbers axial line, the concrete mounting structure of valve rod 16 is: be first provided with threaded bonnet 7 in valve body 3, makees to be connected sealing by two pass "O"-ring 2 between this bonnet with valve body 3；After described valve rod 16 upper end passes bonnet 7, the YE 10 being positioned at valve body 3 top is connected with holding screw 9 and cutting ferrule nut 8, therefore just can make lifting activity by band ovable valve stem 16 by YE 10, and then it is movable to make the flap 6 of valve rod lower end also make synchronization lifting, and finally achieve the purpose of flap 6 sealing keying limbers；Be provided with U-shaped ring between described YE 10 and valve body 3 top, the connection between the two of hex nut work is fixed.

Described valve rod 16 position that contacts with bonnet 7 is provided with "O"-ring 2 as dynamic seal, it is additionally provided with between valve rod 16 and bonnet 7 and seals installation, the V-shaped filler 13 of cross section is to strengthen sealing property, in bonnet 7, specifically it is provided with spring 15 and filler 13, i.e. filler bottom is provided with packing ring 14 and elastic pushing tow spring 15 on packing ring 14, filler 13 top is provided with and is threaded in bonnet 7 upper end the gland 12 being enclosed in bonnet 7 by filler 13 and gland nut 11, together with filler 13 is sealed by gland 12 and the pressure of spring 15 coordinate with valve rod 16.

This utility model is when tentatively opening, and the outlet area between valve seat 4 and flap 6 is less, controls the flow value that valve output is less；When valve wide open, the outlet enlarged areas between valve seat 4 and flap 6, now can control the valve bigger flow value of output, make the discharge coefficient value of valve reach standard-required, and the flow value scope from small to large of control valve effectively.

Claims (8)

1. null1. a Straight pull electric two-way valve，Including valve body (3)、The limbers being arranged in valve body、Seal the valve seat (4) being embedded in limbers、The valve rod (16) that lifting movable sealing is arranged in valve body (3)、It is arranged on valve body (3) top and connects the YE (10) of valve rod (16) upper end and be arranged on the flap (6) of valve rod (16) lower end，This flap is in sealing contact valve seat (4) by valve rod (16) lifting activity and opens and closes limbers，It is characterized in that described valve seat (4) upper port is provided with cone mouth shape sealing surface (41)，Described flap (6) is located at valve seat (4) top，This flap (6) lower end is provided with upper conical (61) being in sealing contact described cone mouth shape sealing surface (41) and the inferior pyramidal face (62) being arranged on upper conical (61) bottom，This inferior pyramidal face and cone mouth shape sealing surface (41) contactless relation，On、Inferior pyramidal face is connected integrally；Upper conical described (61) tapering is less than inferior pyramidal face (62) tapering.
2. Straight pull electric two-way valve the most according to claim 1, it is characterised in that described cone mouth shape sealing surface (41) tapering is 60 °, upper conical described (61) tapering is 30 °, and inferior pyramidal face (62) tapering is 135 °.
3. Straight pull electric two-way valve the most according to claim 1, it is provided with in it is characterized in that described valve body (3) and seals the bonnet (7) installed, described valve rod (16) upper end connects YE (10) through bonnet (7), is provided with and seals the filler (13) installed between valve rod (16) and bonnet (7).
4. Straight pull electric two-way valve the most according to claim 3, it is characterized in that the sealing installation structure of described filler (13) is to be provided with packing ring (14) and elastic pushing tow spring (15) on packing ring (14) in filler (13) bottom, filler (13) top is provided with and is connected to bonnet (7) upper end the gland (12) being enclosed in bonnet (7) by described filler (13) and gland nut (11).
5. Straight pull electric two-way valve the most according to claim 3, it is characterised in that described filler (13) cross section is V-shaped.
6. Straight pull electric two-way valve the most according to claim 1, it is provided with, in it is characterized in that described valve body (3), the interlayer being separated by limbers, this interlayer top is set to uuper valve chamber (31), interlayer bottom is set to lower valve chamber (32), and described limbers axial line is overlapping with valve rod (16) axial line.
7. Straight pull electric two-way valve the most according to claim 6, it is characterised in that described valve body (3) bottom is communicated with the end through hole of lower valve chamber (32), and this end through hole is provided with the valve gap (1) being tightly connected and closes.
8. Straight pull electric two-way valve the most according to claim 1, it is characterized in that being provided with between described YE (10) and valve rod (16) upper end the holding screw (9) of interconnection, cutting ferrule nut (8), between YE (10) and valve body (3) top, be provided with the U-shaped ring of interconnection, hex nut.