CN202469050U

CN202469050U - Flow control valve

Info

Publication number: CN202469050U
Application number: CN2011205737783U
Authority: CN
Inventors: 钟德斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-30
Filing date: 2011-12-30
Publication date: 2012-10-03
Anticipated expiration: 2021-12-30

Abstract

The utility model discloses a flow control valve which comprises a valve body, a stepping motor assembly, and an upper fixing rack and a lower fixing rack both for fixing the valve body, wherein the stepping motor is connected with a valve shaft through a spacing ring. The flow control valve precisely controls the rotation of the valve shaft through the stepping motor so as to change the sectional area of the flow channel which is a square straight-through hole, therefore, the pressure difference of the flow of the passage valve is minimized, and the shaft hole of the valve is a round through hole facilitating observation of the rotary position of the valve shaft. The valve shaft is designed as a column baffle or a rubber assembly to avoid the easy-locking phenomenon of the traditional ball valve. The valve shaft rotates in the area from 0 to 85 DEG, and the flow change is approximate to linearity. When the valve shaft assembly is at 90 DEG, the valve is fully closed. The valve shell is made of a hexagonal square-hole copper rod or PP plastic, so as to match inner and outer threads (15mm or 20mm water pipe connectors) and facilitate installation of the pipeline. The valve shaft vertically floats, and after the motor is detached, the valve shaft can be directly drawn out to conveniently replace the waterproof ring.

Description

Flow control valve

Technical field

The utility model relates to a kind of flow control valve, and the flow size of in directly-heating heat pump (air ability) water heater, regulating water outlet is widely used in the field that fluid flow size needs are regulated.

Background technique

The flow control valve that existing directly-heating heat pump water heater uses has two kinds:

1, Purely mechanical modulating valve; Its refrigerant pressure size according to heat pump compressor changes the valve type cavity volume, thereby changes the flow size, and its shortcoming has the Flow-rate adjustment reaction slow; The product complex process; The valve die cavity bears too big pressure, in case leak, water is sneaked into and will be caused compressor to be scrapped in the refrigerant;

2, electromechanical integration by step motor drive, is rotated ball valve through the reduction gear no-load voltage ratio, rotates in 90 degree scopes by Hall IC is spacing, and it is long-pending to change cross section of fluid channel; Adjusting flow size also has one type of stepper motor to rotate, and through gear reduction, can rotate by 360 degree; Become straight line motion by worm screw again, act on the tapered piston, regulate the flow size, its shortcoming has; Spacing with Hall IC, need control on charged road, the assembling trouble, maintenance is inconvenience also; The complex structure that not spacing 360 degree rotate, the worm screw processing cost is high, and runner is little.

The model utility content

The problem that the utility model will solve provides a kind ofly accurately controls the rotation of valve shaft through stepper motor, changes the sectional area of square runner, thereby regulates the flow size.

For addressing the above problem; The utility model is realized through following scheme: flow control valve, this modulating valve comprise the upper holder and the lower fixed frame of valve body, stepper motor assembly and fixed valve body, on the said stepper motor assembly limited ring are installed; And directly connect valve shaft; Said limited ring is limited in the 0-90 degree and rotates, and this modulating valve is accurately controlled valve shaft through stepper motor and rotated the sectional area that changes runner, thus the size of regulation valve body flow.

The valve flowing channel of said valve body is square, matches with the valve shaft of cylindrical baffle.

Said upper holder and lower fixed frame pass through attachment screw with the valve body setting wherein, and fix through the fixing frame locating slot on the valve body.

One end of said valve shaft connects the stepper motor assembly; The other end is spacing fixing through the valve shaft stop screw; The fixed connection place at valve shaft two ends is provided with seal ring, and said valve shaft is that rubber assembly then comprises valve shaft rubber sleeve, axle steel plate, axle lateral retaining plate, axle top, axle base, and axle steel plate and four axle lateral retaining plates are combined into the skeleton of rubber sleeve; Two ends respectively are provided with axle top and axle base, realize the modulating valve contract fully.

Said stepper motor assembly leans on electrical machinery cover to screw through the screw thread of its screw thread and upper holder and pushes down.

Said valve body is the hexagonal copper rod; Two ends are internal thread or outside thread interface; The valve shaft hole is circular clear opening, and said valve body is that plastics member comprises then that plastic cement valve body, plastic cement axis hole cover plate, rubber strip, cover plate O make, steel disc bottom, bottom screw, and said steel disc bottom is locked on the plastic cement valve body by four bottom screws; And compressing plastic cement axis hole cover plate, said rubber strip is enclosed in valve body axis hole side.

Said lower fixed frame bottom is provided with viewing window.

The utility model is compared with existing, and its advantage is following:

1, this flow control valve structure is simple, makes to assemble easy processing, and is easy to maintenance;

2, the valve flowing channel cross section is square cooperates with the cylindrical baffle valve shaft, makes valve shaft in the rotation of 0-85 degree zone, and changes in flow rate is linear, and comparing the circular cross-section runner can only be wider at 0-60 degree approximately linear variation control band;

3, valve flowing channel is square clear opening, and feasible pressure difference through valve fluid drops to minimum; The valve axis hole also is a through hole, can watch the valve shaft pivotal position.

4, valve shaft designs for cylindrical baffle, and fluid pressure action is cancelled each other in the shaft axis both sides, and locking or the gate valve avoiding conventional ball valve occurring kill phenomenon;

5, valve shaft fluctuates, take off motor after, valve shaft can directly be extracted out, is convenient for changing waterproof ring;

6, valve housing is selected hexagonal square hole hollow copper bar for use, draws materials conveniently, can join internal and external threads (four minutes, six distributed water pipe joints), makes things convenient for pipeline to install.

7, this modulating valve can have multiple combination with different occasions to valve shaft and valve body according to usage requirement. and valve shaft has two kinds of the valve shaft assemblies of whole cylinder brass baffle plate and rubber coating; Valve body has three kinds, and two ends are respectively hexagonal copper rod that internal and external threads connects and are copper rod that internal thread is connected and valve body and time consolidate the plastics member that frame is made of one.

8, combination of rubber valve shaft assembly and copper rod valve body and the copper valve shaft valve body of joining plastics member all can be realized the modulating valve contract fully, can cancel the electromagnetic water inlet valve in the heat pump.

Below be to combine embodiment and description of drawings that the utility model is done further description:

Description of drawings

Fig. 1 is the utility model structure explosive view;

Fig. 2 is the utility model three-dimensional cutaway view;

Fig. 3 is the sectional view of the utility model valve body;

Fig. 4 is the utility model valve body three-dimensional cutaway view;

Fig. 5 is the utility model rubber valve shaft assembly structure explosive view;

Fig. 6 is the utility model rubber valve shaft assembly three-dimensional cutaway view;

Fig. 7 is the utility model plastic cement valve component structure explosive view;

Fig. 8 is the utility model plastic cement valve component three-dimensional cutaway view.

Among Fig. 1-4: 1, valve shaft stop screw, 2, lower fixed frame, 3, valve body, 4, seal ring; 5, valve shaft, 6, upper holder, 7, attachment screw, 8, limited ring; 9, stepper motor assembly, 10, electrical machinery cover, 11, the water pipe adapter outside thread; 12, water pipe adapter internal thread, 13, the fixing frame locating slot, 16, valve flowing channel.

Among Fig. 5-6: 51, valve shaft rubber sleeve, 52, the axle steel plate, 53, the axle lateral retaining plate, 54, axle top, 55, the axle base.

Among Fig. 7-8: 31, plastic cement valve body, 32, plastic cement axis hole cover plate, 33, rubber strip, 34, cover plate O order, 35, the steel disc bottom, 36, the bottom screw.

Embodiment

To shown in Figure 4, this modulating valve comprises the upper holder 6 and the lower fixed frame 2 of valve body 3, stepper motor assembly 9 and fixed valve body 3 like Fig. 1, and valve body 3 is located through last lower fixed frame; It is fastening that upper holder 6 and lower fixed frame 2 are connected through two attachment screws 7, valve body 3 is provided with wherein, and fixing through the fixing frame locating slot on the valve body 3 13; One end of valve shaft 5 connects stepper motor assembly 9, and the other end is spacing fixing through valve shaft stop screw 1, and the fixed connection place at valve shaft 5 two ends is provided with seal ring 4; One end of valve body 3 is a water pipe adapter internal thread 12, and the other end is a water pipe adapter outside thread 11, and stepper motor assembly 9 is fixing by upper holder 6; Connect valve shafts 5 through limited ring 8, the electrical machinery cover 10 applying stepper motor assembly 9 of screwing constitutes an integral body; This modulating valve is accurately controlled valve shaft 5 through stepper motor and is rotated the sectional area that changes runner; Thereby the size of regulation valve body 3 flows, the valve flowing channel 16 of valve body 3 is square, matches with the valve shaft 5 of cylindrical baffle.

Valve body 3 is formed by tooth inside and outside hexagonal square hole copper rod, the car, boring, upper holder 6 and lower fixed frame 2, limited ring 8 and electrical machinery cover 10 by zinc alloy diecasting form, tooth, tapping inside and outside the surface knurling, car.Lower fixed frame 2 bottoms are provided with viewing window, watch the valve shaft pivotal position.

Like Fig. 5, shown in Figure 6, after valve shaft 5 becomes the assembly that is coated by rubber, can realize the contract fully of modulating valve.

This valve shaft assembly comprises a rubber sleeve 51, axle steel plate 52, four axle lateral retaining plates 53, axle top 54, axle base 55; Axle steel plate 52 and four axle lateral retaining plates 53 are combined into skeleton; Mold insert as rubber sleeve 51; Its material is the HNBR nitrile rubber, and two ends respectively are provided with axle top 54 and axle base 55, realize the modulating valve contract fully.

Like Fig. 7, shown in Figure 8, in enormous quantities low-cost after valve body 3 makes plastics member into, just cooperate with the cylindrical baffle valve shaft and can realize the modulating valve contract fully.

This plastics member comprises plastic cement valve body 31, plastic cement axis hole cover plate 32, and optional PP material of material or PPR material, two rubber strips 33 are HNBR hydrogen nitrile rubber, cover plate O makes 34 to be NBR nitrile rubber, 35, four bottom screws 36 of steel disc bottom.Plastic cement valve body 31 and plastic cement axis hole cover plate 32 are gone out by the plastic mould beer, and plastic cement axis hole cover plate 32 is enclosed in valve body axis hole both sides with two rubber strips 33.The bottom is established peep hole and is watched the valve shaft pivotal position.

Claims

1. flow control valve; It is characterized in that: this modulating valve comprises the upper holder (6) and the lower fixed frame (2) of valve body (3), stepper motor assembly (9) and fixed valve body (3); Said stepper motor assembly (9) is gone up limited ring (8) is installed, and directly connects valve shaft (5), and said limited ring (8) is limited in the 0-90 degree and rotates; This modulating valve is accurately controlled valve shaft (5) through stepper motor and is rotated the sectional area that changes runner, thus the size of regulation valve body (3) flow.

2. flow control valve according to claim 1 is characterized in that: the valve flowing channel (16) of said valve body (3) matches with the valve shaft (5) of cylindrical baffle for square.

3. flow control valve according to claim 1 is characterized in that: said upper holder (6) and lower fixed frame (2) are provided with valve body (3) wherein through attachment screw (7), and fixing through the fixing frame locating slot (13) on the valve body (3).

4. flow control valve according to claim 1; It is characterized in that: an end of said valve shaft (5) connects stepper motor assembly (9); The other end is spacing fixing through valve shaft stop screw (1); The fixed connection place at valve shaft (5) two ends is provided with seal ring (4), and said valve shaft (5) then comprises valve shaft rubber sleeve (51), axle steel plate (52), axle lateral retaining plate (53), axle top (54), axle base (55) for rubber assembly, and an axle steel plate (52) and four axle lateral retaining plates (53) are combined into the skeleton of rubber sleeve (51); Two ends respectively are provided with axle top (54) and axle base (55), realize the modulating valve contract fully.

5. flow control valve according to claim 1 is characterized in that: said stepper motor assembly (9) leans on electrical machinery cover (10) to screw through the screw thread of its screw thread and upper holder (6) and pushes down.

6. flow control valve according to claim 1; It is characterized in that: said valve body (3) is the hexagonal copper rod; Two ends are internal thread (12) or outside thread (11) interface; The valve shaft hole is circular clear opening, and said valve body (3) comprises then that for plastics member plastic cement valve body (31), plastic cement axis hole cover plate (32), rubber strip (33), cover plate O make (34), steel disc bottom (35), bottom screw (36), and said steel disc bottom (35) is locked on the plastic cement valve body (31) by four bottom screws (36); And compressing plastic cement axis hole cover plate (32), said rubber strip (33) is enclosed in valve body axis hole side.

7. flow control valve according to claim 1 is characterized in that: said lower fixed frame (2) bottom is provided with viewing window.