CN203836231U

CN203836231U - Pilot type electrically operated valve

Info

Publication number: CN203836231U
Application number: CN201420207495.0U
Authority: CN
Inventors: 邓志强
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-04-25
Filing date: 2014-04-25
Publication date: 2014-09-17
Anticipated expiration: 2024-04-25

Abstract

The utility model discloses a pilot type electrically operated valve. A fluid inlet and a fluid outlet are formed in the lateral face of a valve body, a valve port is formed in the end face of the valve body, a spool and a valve cover are arranged in the valve port, a main valve cavity is formed between the spool and the valve cover, a transmission mechanism driven by a micro-motor is arranged on the valve body, a valve cover boss in butt joint with the end face of the valve body is arranged at the position of the end face edge of the valve cover, the end face of the valve cover boss is sealed by a valve control cavity, a valve control cavity outlet thin hole channel and a valve control cavity inlet thin hole channel are arranged on the end face of the valve cover boss, the valve control cavity inlet thin hole channel is communicated with the main valve cavity and the valve control cavity, a fluid outlet thin hole channel communicated with the fluid outlet is arranged on the valve body and corresponds to the valve control cavity outlet thin hole channel, the valve control cavity and the fluid outlet are communicated, and a fluid inlet thin hole channel through which the fluid inlet is communicated with the main valve cavity is arranged on the spool. The transmission mechanism is a lever controlled by a worm, and opening and closing of the valve control cavity outlet thin hole channel are directly controlled. The pilot type electrically operated valve is compact in structure, small in size, high in transmission efficiency and accurate to control. In addition, power consumption is lower.

Description

Pilot-operated-type electric valve

(1) technical field:

The utility model relates to mortor operated valve technology, is specially a kind of pilot-operated-type electric valve.

(2) background technique:

The switch mortor operated valve of existing flow channel, air-flow path etc., as " micro-power consumption pilot-operated-type electric valve " utility model patent that number of patent application is ZL200920141302.5, its technological scheme comprises valve body and is located at fluid input, fluid output, main valve chamber, control chamber and the gearbox in valve body: control chamber is connected, exports pore by input pore and is connected with fluid output with main valve chamber; In control chamber, be provided with L shaped fork, this fork is divided into axle head and moved end two-part, and fork axle head stretches out from the control chamber cover plate sealing of being located at control chamber opening, with the driving mechanism interlock being provided with in gearbox, fork moved end is pressed in before output pore, opens and closes this hole; Gearbox is the L shaped cavity being opened on valve body, the driving mechanism that is provided with motor, scroll bar in gearbox and forms from spring plate; The axle center of worm screw is fixed on the output shaft of motor, is rotated by driven by motor; One bearing of trend is engaged in the thread groove of worm screw to vertical one end from spring plate with worm shaft, from the other end of spring plate be fixed on fork axle head.

The problem that the technological scheme of described " micro-power consumption pilot-operated-type electric valve " utility model patent exists:

1, complex structure, required precision is high, and processing dimension is difficult to hold, and is difficult for large-scale production.

2, volume is large, and component are more, and connection part is easily loosening.

3, the path length of controlling current, bending is many, and power consumption is large.

(3) model utility content:

Technical problem to be solved in the utility model is to provide the pilot-operated-type electric valve that a kind of structure is compacter, the response time is shorter, switching current is less.

The pilot-operated-type electric valve that can solve the problems of the technologies described above, comprise valve body, the fluid input of offering in valve body side and fluid output converge in the valve port that valve body end face is offered, in described valve port, be provided with the spool of shutoff fluid output, valve port is provided with the valve gap of shutoff fluid input, between described spool and valve gap, form main valve chamber and press-fit return spring, the driving mechanism that is also provided with micromachine and is driven by micromachine on described valve body, difference be described valve gap end face edge place be provided with protruding and with the valve gap boss of valve body end face overlap joint, described valve gap raised head face is sealed by the outer valve control chamber arranging of valve gap, on valve gap raised head face, offer proximal valves control chamber import pore passage and far-end valve control chamber outlet pore passage, valve control chamber import pore channel connection main valve chamber and valve control chamber, on valve body end face, offer corresponding to valve control chamber outlet pore passage the fluid output pore passage communicating with fluid output, fluid output pore passage communicates and connecting valve control chamber and fluid output with valve control chamber outlet pore passage, on spool, offer the fluid inlet pore passage of communication of fluid entrance and main valve chamber, described micromachine be located at valve gap opposite side relative to valve control chamber, the output shaft of micromachine is perpendicular to valve body end face, described driving mechanism comprise be located at the worm screw on Miniature electric machine output shaft and be located at worm screw and valve control chamber between lever, the drive end of described lever is located in the thread groove of worm screw, the driven end of lever stretches in valve control chamber with sealing means, described driven end be provided with can shutoff valve gap boss on the elastic sealant of valve control chamber outlet pore port hole mouth.

For ease of installing, the 7 font speed reducer valve control chamber supports in integrated installation micromachine, worm screw, lever and valve control chamber can be set, described micromachine and worm screw are located in perpendicular section of 7 font speed reducer valve control chamber supports, and described lever and lever rotatingshaft and valve control chamber are located in the crosspiece of 7 font speed reducer valve control chamber supports.

Further design, described valve control chamber is formed by two O type rubber seal gum covers, described pair of O type rubber seal gum cover comprises, lower O type rubber seal and be connected in the rubber between two seal rings, lower O type rubber seal sealing raised head face, the support cover plate raised head face of corresponding position on upper O type rubber seal closed supports cover plate, described support cover plate is located at the crosspiece top of 7 font speed reducer valve control chamber supports, the driven end of described lever enters valve control chamber from the rubber of a corresponding side, projection inside on rubber is coated by the driven end body of rod stretching into, valve control chamber is sealed completely and form an entirety.

Described valve body end face is installed valve bonnet, and described valve bonnet covers 7 font speed reducer valve control chamber supports.

For locating 7 font speed reducer valve control chamber supports, between the crosspiece bottom of described 7 font speed reducer valve control chamber supports and valve gap end face, be provided with mutual groove and the flange that engages location.

In conventional design, described fluid input and fluid output are offered in the left and right side of valve body, and described valve control chamber is in valve body end face right side central, and described micromachine is in valve body end face left side central portion, described lever is left and right direction, and lever rotatingshaft is front and rear direction.

The beneficial effects of the utility model:

1, the utility model pilot-operated-type electric valve carries out the most rational layout to each cavity, makes valve body structure compactness, volume minimum, and component are easily processed and are assembled.

2, current control channel of the present utility model is succinct, and current turning number of times is few, and path is short, and response is fast, moves sensitiveer.

3, the utility model is exported the conducting of pore passage and is closed by the valve control chamber in the direct control valve control of lever chamber, has greatly improved motor-driven efficiency, controls accurately, and power consumption is lower.

(4) brief description of the drawings:

Fig. 1 is the structural representation of a kind of mode of execution of the utility model.

Fig. 2 is A-A cut-away view in Fig. 1.

Fig. 3 is the position relationship schematic diagram of valve bonnet in Fig. 2, support cover plate, lever, 7 font speed reducer valve control chamber supports, micromachine, worm screw, two O type rubber seal gum cover, valve gap and spool.

Figure number mark: 1, valve body; 2, fluid input; 3, fluid output; 4, spool; 5, valve gap; 6, main valve chamber; 7, return spring; 8, micromachine; 9, valve gap boss; 10, valve control chamber; 11, valve control chamber import pore passage; 12, worm screw; 13, lever; 14, elastic sealant; 15,7 font speed reducer valve control chamber supports; 16, valve bonnet; 17, support cover plate; 18, two O type rubber seal gum covers; 19, spool diaphragm; 20, lever rotatingshaft; 21, valve control chamber outlet pore passage; 22, support cover plate boss; 23, fluid output pore passage; 24, fluid inlet pore passage.

(5) embodiment:

Below in conjunction with accompanying drawing illustrated embodiment, the technical solution of the utility model is described further.

The main body of the utility model pilot-operated-type electric valve is valve body 1, a left side for described valve body 1, in right both ends of the surface, inwardly offer fluid input 2 and fluid output 3, the upper-end surface of valve body 1 inwardly offers valve port, described fluid input 2 and fluid output 3 converge in the end opening of valve port, in described valve port, be provided with the spool 4 that is set with spool diaphragm 19, the spool diaphragm 19 shutoff fluid outputs 3 of described spool 4 bottoms, valve gap 5 is set on valve port, downward skirt section, described valve gap 5 bottoms enters in valve port the outside of spool diaphragm 19 is pressed in to shutoff fluid input 2 on the step in valve port, between described valve gap 5 and spool 4, form main valve chamber 6, return spring 7 press-fits between valve gap 5 and spool 4, as shown in Figure 2.

The top end face of described valve gap 5 is provided with a left side, the flange of right, the right-hand member of flange is provided with valve gap boss 9, described valve gap boss 9 stretches out and is overlapped in valve body 1 right side, upper-end surface from valve gap 5 circumferential edges, on valve gap boss 9 end faces, offer apart from the valve control chamber import pore passage 11 of valve gap 5 center near-ends and the valve control chamber of far-end outlet pore passage 21, described valve control chamber outlet pore passage 21 with valve control chamber import pore passage 11 in 10 interior being connected of valve control chamber, valve control chamber import pore passage 11 connects valve gap boss 9 and valve gap 5, valve control chamber outlet pore passage 21 connects valve gap boss 9, inwardly offer corresponding to valve control chamber outlet pore passage 21 the fluid output pore passage 23 communicating with fluid output 3 in valve body 1 right side, upper-end surface, valve gap 5 tops arrange 7 font speed reducer valve control chamber supports 15, the perpendicular pars infrasegmentalis of 7 font speed reducer valve control chamber support 15 is engaged in the recess of offering in valve body 1 left side, upper-end surface, before 7 font speed reducer valve control chamber support 15 crosspiece bottoms, rear to rib engage location with the flange on valve gap 5 end faces, 7 font speed reducer valve control chamber support 15 crosspiece front positions arrange two O type rubber seal gum covers 18 corresponding to valve gap boss 9 and support cover plate boss 22, described support cover plate boss 22 is located at support cover plate 17 front ends, described support cover plate 17 capping 7 support 15 crosspiece tops, font speed reducer valve control chamber, the lower O type rubber seal rings for seal of described pair of O type rubber seal gum cover 18 is in valve gap boss 9 end faces, upper O type rubber seal rings for seal forms described valve control chamber 10 in support cover plate boss 22 end faces, 7 font speed reducer valve control chamber support 15 crosspiece back-end locations arrange O type rubber seal rings for seal speed reducer corresponding to support cover plate 17, as Fig. 2, shown in Fig. 3.

In the perpendicular pars infrasegmentalis of described 7 font speed reducer valve control chamber support 15, micromachine 8 is set, the output shaft of described micromachine 8 vertically upward, on output shaft, coaxial mounted worm screw 12 is in the 7 perpendicular section tops of font speed reducer valve control chamber support 15, in 7 font speed reducer valve control chamber support 15 crosspieces, be provided with the lever 13 of left and right directions, on the center-right body of rod of described lever 13, there is rotational axis hole, lever rotatingshaft 20 is arranged on 7 font speed reducer valve control chamber support 15 crosspiece both sides ribs through axis hole, taking lever rotational axis hole as boundary, left side is drive end, right side is driven end, drive end enters in the thread groove of worm screw 12, driven end enters in two O type rubber seal gum covers 18 (being valve control chamber 10), the driven end body of rod is by the coated sealing of projection inside on this side rubber, driven end be enclosed with can shutoff valve gap boss 9 on the elastic sealant 14 of valve control chamber outlet pore passage 21 hole mouths, as Fig. 2, shown in Fig. 3.

The valve bonnet 16 that can cover 7 font speed reducer valve control chamber supports 15 is installed on described valve body 1 end face, valve bonnet 16 compresses support cover plate 17 on 7 font speed reducer valve control chamber supports 15, the upper O type rubber seal of the two O type rubber seal gum covers 18 of support cover plate boss 22 sealing, the lower O type rubber seal of the two O type rubber seal gum covers 18 of valve gap boss 9 sealing, upper and lower O type rubber seal and between rubber be closed form valve control chamber 10, as shown in Figure 1 and Figure 2.

The circulation path being made up of fluid inlet pore passage 24, valve control chamber import pore passage 11, valve control chamber outlet pore passage 21 and fluid output pore passage 23 is: fluid input 2---the fluid inlet pore passage 24 on spool 4---and main valve chamber 6---the valve control chamber import pore passage 11 on valve gap 5---valve control chamber 10---valve control chamber outlet pore passage 21---the fluid output pore passage 23 on valve body 1 right side, upper-end surface---fluid output 3, as shown in Figure 2.

The conducting of described circulation path and close the lever 13 being driven by micromachine 8 and control: described micromachine 8 is given electric forward rotation, the drive end of lever 13 moves downward, the driven end of lever 13 upwards lifts motion, the elastic sealant 14 of lever 13 front ends leaves the hole mouth of valve control chamber outlet pore passage 21 on valve gap boss 9, circulation path conducting, the pressure of main valve chamber 6 is reduced, hydrodynamic pressure is greater than return spring 7 pressure and backs down spool 4, thereby realize the conducting between fluid input 2 and fluid output 3, fluid is through the straight-through fluid output 3 of fluid input 2; Described micromachine 8 rotates backward to electricity, the drive end of lever 13 moves upward, the driven end of lever 13 is made downward motion downwards, the hole mouth of the valve control chamber outlet pore passage 21 on the elastic sealant 14 shutoff valve gap boss 9 of lever 13 front ends, circulation path is closed, 10 pressurizes of valve control chamber, and hydrodynamic pressure all acts on main valve chamber 6, with return spring 7 actings in conjunction under pressed spool 4 on fluid output 3, close the conducting between fluid input 2 and fluid output 3.

The upper and lower spacing of the driven end of described lever 13 is the support cover plate boss 22 of top and the valve gap boss 9 of below, and the drive end of restriction lever 13 can only move in the thread groove of worm screw 12.

Claims

1. pilot-operated-type electric valve, comprise valve body (1), the fluid input (2) of offering in valve body (1) side and fluid output (3) converge in the valve port that valve body (1) end face is offered, in described valve port, be provided with the spool (4) of shutoff fluid output (3), valve port is provided with the valve gap (5) of shutoff fluid input (2), between described spool (4) and valve gap (5), form main valve chamber (6) and press-fit return spring (7), the driving mechanism that is also provided with micromachine (8) on described valve body (1) and is driven by micromachine (8), it is characterized in that: described valve gap (5) end face edge place be provided with protruding and with the valve gap boss (9) of valve body (1) end face overlap joint, described valve gap boss (9) end face is by outer valve control chamber (10) sealing arranging of valve gap (5), on valve gap boss (9) end face, offer proximal valves control chamber import pore passage (11) and far-end valve control chamber outlet pore passage (21), valve control chamber import pore passage (11) is communicated with main valve chamber (6) and valve control chamber (10), on valve body (1) end face, offer corresponding to valve control chamber outlet pore passage (21) the fluid output pore passage (23) communicating with fluid output (3), described fluid output pore passage (23) communicates and connecting valve control chamber (10) and fluid output (3) with valve control chamber outlet pore passage (21), on spool (4), offer the fluid inlet pore passage (24) of communication of fluid entrance (2) and main valve chamber (6), described micromachine (8) be located at valve gap (5) opposite side relative to valve control chamber (10), the output shaft of micromachine (8) is perpendicular to valve body (1) end face, described driving mechanism comprise be located at the worm screw (12) on micromachine (8) output shaft and be located at worm screw (12) and valve control chamber (10) between lever (13), the drive end of described lever (13) is located in the thread groove of worm screw (12), the driven end of lever (13) stretches in valve control chamber (10) with sealing means, described driven end is provided with can the above elastic sealant (14) of valve control chamber outlet pore passage (21) hole mouth of shutoff valve gap boss (9).

2. pilot-operated-type electric valve according to claim 1, it is characterized in that: the 7 font speed reducer valve control chamber supports (15) that are provided with integrated installation micromachine (8), worm screw (12), lever (13) and valve control chamber (10), described micromachine (8) and worm screw (12) are located in perpendicular section of 7 font speed reducer valve control chamber supports (15), and described lever (13) and lever rotatingshaft (20) and valve control chamber (10) are located in the crosspiece of 7 font speed reducer valve control chamber supports (15).

3. pilot-operated-type electric valve according to claim 2, it is characterized in that: described valve control chamber (10) is formed by two O type rubber seal gum covers (18), described pair of O type rubber seal gum cover (18) comprises, lower O type rubber seal and be connected in the rubber between two seal rings, lower O type rubber seal sealing valve gap boss (9) end face, support cover plate boss (22) end face of the upper corresponding position of upper O type rubber seal closed supports cover plate (17), described support cover plate (17) is located at the crosspiece top of 7 font speed reducer valve control chamber supports (15), the driven end of described lever (13) enters valve control chamber (10) from the rubber of a corresponding side, projection inside on rubber is coated by the driven end body of rod stretching into.

4. pilot-operated-type electric valve according to claim 3, is characterized in that: described valve body (1) end face is installed valve bonnet (16), and described valve bonnet (16) covers 7 font speed reducer valve control chamber supports (15).

5. according to the pilot-operated-type electric valve described in claim 2,3 or 4, it is characterized in that: between the crosspiece bottom of described 7 font speed reducer valve control chamber supports (15) and valve gap (5) end face, be provided with mutual groove and the flange that engages location.

6. according to the pilot-operated-type electric valve described in any one in claim 1～4, it is characterized in that: described fluid input (2) and fluid output (3) are offered in the left and right side of valve body (1), described valve control chamber (10) is in valve body (1) end face right side central, described micromachine (8) is in valve body (1) end face left side central portion, and described lever (13) is left and right direction.