阅读说明：本技术 先导阀及控制阀装置 (Pilot valve and control valve device ) 是由 魏志坚 林方棋 杨剑洪 胡力宏 赵振文 于 2020-06-30 设计创作，主要内容包括：本发明公开了先导阀及控制阀装置。先导阀包括阀体单元、阀芯和驱动杆；该阀体单元包括阀体,该阀芯能滑动设于阀体内且通过阀芯将阀体内腔分为成压腔和出水腔,该阀芯之对应出水腔的端面装接有密封件,该阀体设有接通出水腔的两开口,该两开口分别设置在阀体侧壁和阀体底壁,通过阀芯滑动控制密封件是否接触密封阀体以控制两开口通断；该驱动杆内端和阀芯装接在一起以通过驱动杆带动阀芯滑动,该驱动杆外端伸出阀体外；该两开口可根据需要设为先导阀的进水口和分水口以使先导阀即能装配成底进水侧出水或底出水侧进水。它具有如下优点：方便互换进水口和出水口。(The invention discloses a pilot valve and a control valve device. The pilot valve comprises a valve body unit, a valve core and a driving rod; the valve body unit comprises a valve body, the valve core can be arranged in the valve body in a sliding mode, an inner cavity of the valve body is divided into a pressure cavity and a water outlet cavity through the valve core, a sealing element is mounted on the end face of the valve core corresponding to the water outlet cavity, the valve body is provided with two openings communicated with the water outlet cavity, the two openings are respectively formed in the side wall of the valve body and the bottom wall of the valve body, and whether the sealing element is in contact with the sealed valve body or not is controlled through sliding of the valve core so as to control the connection and disconnection of the two openings; the inner end of the driving rod is connected with the valve core together so as to drive the valve core to slide through the driving rod, and the outer end of the driving rod extends out of the valve body; the two openings can be set as a water inlet and a water division opening of the pilot valve according to requirements so that the pilot valve can be assembled into water outlet at the bottom water inlet side or water inlet at the bottom water outlet side. It has the following advantages: the water inlet and the water outlet are convenient to exchange.)

1. The pilot valve comprises a valve body unit, a valve core and a driving rod; the method is characterized in that: the valve body unit comprises a valve body and two cover bodies, the valve core can be arranged in the valve body in a sliding mode, the inner cavity of the valve body is divided into a pressure cavity and a water outlet cavity through the valve core, a sealing element is mounted on the end face of the valve core corresponding to the water outlet cavity, the valve body is provided with two openings communicated with the water outlet cavity, and whether the sealing element is in contact with the sealing valve body or not is controlled through sliding of the valve core so as to control the on-off of the two openings; the inner end of the driving rod is connected with the valve core together so as to drive the valve core to slide through the driving rod, and the outer end of the driving rod extends out of the valve body; a lid cover is just located the one-tenth pressure chamber outside the actuating lever, and another lid cover is just located outside the valve body outside the actuating lever, all is formed with a water hole between each lid and actuating lever, and two water holes are arranged along the actuating lever is coaxial, and the water hole that the lid cooperation that is located the one-tenth pressure chamber formed is the moisturizing hole, and the water hole that the lid cooperation that is located the valve body outside formed is the sluicing hole.

2. A pilot valve as claimed in claim 1, wherein: the two openings are respectively arranged on the side wall of the valve body and the bottom wall of the valve body.

3. A pilot valve as claimed in claim 1, wherein: the valve core comprises a pressure forming seat, the sealing element is installed on the end surface of the pressure forming seat corresponding to the water outlet cavity, and a first elastic body is arranged between a cover body positioned in the pressure forming cavity and the end wall of the valve body corresponding to the pressure forming cavity.

4. A pilot valve as claimed in claim 1, wherein: the outer peripheral wall of the pressure forming seat is provided with a first sealing ring which is connected with the inner peripheral wall of the valve body in a sealing way.

5. A pilot valve as claimed in claim 1, wherein: the pressure forming seat is provided with a first through hole penetrating along the sliding direction, the inner end of the driving rod extends out of the first through hole, the first through hole is a stepped hole with a large upper part and a small lower part and comprises a large hole section and a small hole section, a protruding part is arranged on the lower portion of the cover body in the pressure forming cavity in a protruding mode, the protruding part is placed in the large hole section, and the cover body in the pressure forming cavity is arranged on the pressure forming seat in a supporting mode.

6. A pilot valve as claimed in claim 5, wherein: the end wall of the pressure forming seat facing the pressure forming cavity is concavely provided with a groove, and the cover body part positioned in the pressure forming cavity is positioned in the groove and supported at the bottom of the groove.

7. A pilot valve as claimed in claim 1, wherein: the outer end wall of the valve body is concavely provided with a mounting groove, and the cover body positioned outside the valve body is convexly provided with a convex part which is placed in the mounting groove.

8. A pilot valve as claimed in claim 7, wherein: the valve body unit comprises an outer gland, the outer gland is positioned outside the valve body and is fixedly connected with the valve body relatively, the outer end of the driving rod penetrates through the outer gland, and a cover body positioned outside the valve body is arranged between the outer gland and the valve body.

9. A pilot valve as claimed in claim 8, wherein: a pressure relief channel is arranged between the outer gland and the valve body, and the pressure relief channel is located outside the valve body and communicated with the first water hole and the second water hole.

10. A pilot valve as claimed in claim 1, wherein: the valve body unit is provided with a pressure relief channel which is positioned outside the valve body and communicated with the two water holes.

11. A pilot valve as claimed in claim 2, wherein: the two driving rods are provided with annular gaps in a concave manner, the annular gaps of the two driving rods are arranged at different positions, and the two cover bodies are respectively a first cover body and a second cover body; the annular gap of one driving rod is matched with a first cover body, the first cover body is installed in a pressure forming cavity, the second cover body is positioned outside a valve body, the annular gap of the other driving rod is matched with the first cover body, the first cover body is positioned outside the valve body, and the second cover body is installed in the pressure forming cavity.

12. A pilot valve as claimed in claim 11, wherein: the two driving rods are respectively a first driving rod and a second driving rod;

the annular gap of the first type of driving rod is matched with a first cover body, the first cover body is installed in a pressing cavity, the second cover body is positioned outside the valve body, the two second sealing rings are sleeved with the driving rod and are respectively arranged on two sides of the second cover body, the opening positioned on the side wall forms a water outlet, and the opening positioned on the bottom wall forms a water inlet;

the annular notch of the second type of driving rod is matched with the first cover body, the first cover body is positioned outside the valve body, the second cover body is installed and connected in the pressing cavity, the two second sealing rings are sleeved with the driving rod, the second cover body and the first cover body are arranged between the two second sealing rings, an opening positioned on the side wall forms a water inlet, and an opening positioned on the bottom wall forms a water outlet.

13. A pilot valve as claimed in claim 1, wherein: the valve body unit also comprises a shell, the valve body and the shell are relatively fixed, the driving rod can slide relative to the shell, an automatic ball-point pen mechanism is arranged between the driving rod and the shell, and the driving rod forms a refill of the automatic ball-point pen mechanism.

14. A pilot valve as claimed in claim 13, wherein: the automatic ball-point pen mechanism comprises a ratchet seat, an upper ratchet, an adapter and a second elastic body; the inner periphery of the upper section of the shell is provided with a ratchet seat, the upper ratchet wheel can be connected in the ratchet seat in a sliding way and matched with the ratchet seat, the upper ratchet wheel and the external pressing cover are all provided with ratchets, the driving rod penetrates through the upper ratchet wheel and the ratchet seat, the adapter is fixedly connected to the upper end of the driving rod, and the adapter extends out of the ratchet seat and forms a button of the automatic ball pen mechanism.

15. A pilot valve as claimed in claim 14, wherein: the automatic ball-point pen mechanism comprises an upper ratchet wheel, a button shell, a lower ratchet wheel and a second elastic body; the upper end of the driving rod is arranged in a lower ratchet wheel which is arranged in an upper ratchet wheel, the upper ratchet wheel is arranged in a button shell, the button shell is arranged in the upper section of the shell, ratchets are arranged on the bottom end parts of the upper ratchet wheel, the button shell and the lower ratchet wheel and surround the driving rod, and the button shell extends out of the shell and forms a key of the automatic ball pen mechanism.

16. The pilot valve comprises a valve body unit, a valve core and a driving rod; the method is characterized in that: the valve body unit comprises a valve body, the valve core can be arranged in the valve body in a sliding mode, an inner cavity of the valve body is divided into a pressure cavity and a water outlet cavity through the valve core, a sealing element is mounted on the end face of the valve core corresponding to the water outlet cavity, the valve body is provided with two openings communicated with the water outlet cavity, the two openings are respectively formed in the side wall of the valve body and the bottom wall of the valve body, and whether the sealing element is in contact with the sealed valve body or not is controlled through sliding of the valve core so as to control the connection and disconnection of the two openings; the inner end of the driving rod is connected with the valve core together so as to drive the valve core to slide through the driving rod, and the outer end of the driving rod extends out of the valve body; the two openings can be set as a water inlet and a water division opening of the pilot valve according to requirements so that the pilot valve can be assembled into water outlet at the bottom water inlet side or water inlet at the bottom water outlet side.

17. A control valve apparatus characterized by: the pilot valve and water inlet and outlet assembly as claimed in claim 1 or 16, wherein the water inlet and outlet assembly comprises a housing and a lower connecting part, the housing is rotatably sleeved outside the valve body part, the lower connecting part comprises a fixed piece fixed relative to the valve body part and a movable piece capable of rotating relative to the fixed piece, the housing is sleeved outside the lower connecting part and is in transmission connection with the movable piece, the housing is provided with a first water through opening capable of being communicated with one opening, the fixed piece is provided with a second water through opening capable of being communicated with the other opening, and the movable piece is provided with two control openings which are matched with the second water through opening.

Technical Field

The present invention relates to a waterway control device, and more particularly, to a pilot valve and a control valve device.

Background

The existing pilot valve comprises a valve body unit, a valve core and a driving rod; the valve body unit comprises a valve body, the valve core can be arranged in the valve body in a sliding mode, the inner cavity of the valve body is divided into a pressure cavity and a water outlet cavity through the valve core, the end face, corresponding to the water outlet cavity, of the valve core is provided with a sealing piece, the valve body is provided with two openings communicated with the water outlet cavity, and whether the sealing piece contacts the sealing valve body or not is controlled through sliding of the valve core so as to control the connection and disconnection of the two openings; the inner end of the driving rod is connected with the valve core together so as to drive the valve core to slide through the driving rod, and the outer end of the driving rod extends out of the valve body. The two openings are respectively a water inlet and a water dividing opening of the pilot valve, and can only set for water outlet at the bottom water inlet side or water inlet at the bottom water outlet side, and cannot be replaced as required.

Disclosure of Invention

The present invention provides a pilot valve and a control valve device, which overcomes the defects of the pilot valve in the background art.

One of the technical schemes adopted by the invention for solving the technical problems is as follows: the pilot valve comprises a valve body unit, a valve core and a driving rod; the valve body unit comprises a valve body and two cover bodies, the valve core can be arranged in the valve body in a sliding mode, the inner cavity of the valve body is divided into a pressure cavity and a water outlet cavity through the valve core, a sealing element is mounted on the end face of the valve core corresponding to the water outlet cavity, the valve body is provided with two openings communicated with the water outlet cavity, and whether the sealing element is in contact with the sealing valve body or not is controlled through sliding of the valve core so as to control the on-off of the two openings; the inner end of the driving rod is connected with the valve core together so as to drive the valve core to slide through the driving rod, and the outer end of the driving rod extends out of the valve body; a lid cover is just located the one-tenth pressure chamber outside the actuating lever, and another lid cover is just located outside the valve body outside the actuating lever, all is formed with a water hole between each lid and actuating lever, and two water holes are arranged along the actuating lever is coaxial, and the water hole that the lid cooperation that is located the one-tenth pressure chamber formed is the moisturizing hole, and the water hole that the lid cooperation that is located the valve body outside formed is the sluicing hole.

In one embodiment: the two openings are respectively arranged on the side wall of the valve body and the bottom wall of the valve body.

In one embodiment: the valve core comprises a pressure forming seat, the sealing element is installed on the end surface of the pressure forming seat corresponding to the water outlet cavity, and a first elastic body is arranged between a cover body positioned in the pressure forming cavity and the end wall of the valve body corresponding to the pressure forming cavity.

In one embodiment: the outer peripheral wall of the pressure forming seat is provided with a first sealing ring which is connected with the inner peripheral wall of the valve body in a sealing way.

In one embodiment: the pressure forming seat is provided with a first through hole penetrating along the sliding direction, the inner end of the driving rod extends out of the first through hole, the first through hole is a stepped hole with a large upper part and a small lower part and comprises a large hole section and a small hole section, a protruding part is arranged on the lower portion of the cover body in the pressure forming cavity in a protruding mode, the protruding part is placed in the large hole section, and the cover body in the pressure forming cavity is arranged on the pressure forming seat in a supporting mode.

In one embodiment: the end wall of the pressure forming seat facing the pressure forming cavity is concavely provided with a groove, and the cover body part positioned in the pressure forming cavity is positioned in the groove and supported at the bottom of the groove.

In one embodiment: the outer end wall of the valve body is concavely provided with a mounting groove, and the cover body positioned outside the valve body is convexly provided with a convex part which is placed in the mounting groove.

In one embodiment: the valve body unit comprises an outer gland, the outer gland is positioned outside the valve body and is fixedly connected with the valve body relatively, the outer end of the driving rod penetrates through the outer gland, and a cover body positioned outside the valve body is arranged between the outer gland and the valve body.

In one embodiment: a pressure relief channel is arranged between the outer gland and the valve body, and the pressure relief channel is located outside the valve body and communicated with the first water hole and the second water hole.

In one embodiment: the valve body unit is provided with a pressure relief channel which is positioned outside the valve body and communicated with the two water holes.

In one embodiment: the two driving rods are provided with annular gaps in a concave manner, the annular gaps of the two driving rods are arranged at different positions, and the two cover bodies are respectively a first cover body and a second cover body; the annular gap of one driving rod is matched with a first cover body, the first cover body is installed in a pressure forming cavity, the second cover body is positioned outside a valve body, the annular gap of the other driving rod is matched with the first cover body, the first cover body is positioned outside the valve body, and the second cover body is installed in the pressure forming cavity.

In one embodiment: the two driving rods are respectively a first driving rod and a second driving rod;

the annular gap of the first type of driving rod is matched with a first cover body, the first cover body is installed in a pressing cavity, the second cover body is positioned outside the valve body, the two second sealing rings are sleeved with the driving rod and are respectively arranged on two sides of the second cover body, the opening positioned on the side wall forms a water outlet, and the opening positioned on the bottom wall forms a water inlet;

the annular notch of the second type of driving rod is matched with the first cover body, the first cover body is positioned outside the valve body, the second cover body is installed and connected in the pressing cavity, the two second sealing rings are sleeved with the driving rod, the second cover body and the first cover body are arranged between the two second sealing rings, an opening positioned on the side wall forms a water inlet, and an opening positioned on the bottom wall forms a water outlet.

In one embodiment: the valve body unit also comprises a shell, the valve body and the shell are relatively fixed, the driving rod can slide relative to the shell, an automatic ball-point pen mechanism is arranged between the driving rod and the shell, and the driving rod forms a refill of the automatic ball-point pen mechanism.

In one embodiment: the automatic ball-point pen mechanism comprises a ratchet seat, an upper ratchet, an adapter and a second elastic body; the inner periphery of the upper section of the shell is provided with a ratchet seat, the upper ratchet wheel can be connected in the ratchet seat in a sliding way and matched with the ratchet seat, the upper ratchet wheel and the external pressing cover are all provided with ratchets, the driving rod penetrates through the upper ratchet wheel and the ratchet seat, the adapter is fixedly connected to the upper end of the driving rod, and the adapter extends out of the ratchet seat and forms a button of the automatic ball pen mechanism.

In one embodiment: the automatic ball-point pen mechanism comprises an upper ratchet wheel, a button shell, a lower ratchet wheel and a second elastic body; the upper end of the driving rod is arranged in a lower ratchet wheel which is arranged in an upper ratchet wheel, the upper ratchet wheel is arranged in a button shell, the button shell is arranged in the upper section of the shell, ratchets are arranged on the bottom end parts of the upper ratchet wheel, the button shell and the lower ratchet wheel and surround the driving rod, and the button shell extends out of the shell and forms a key of the automatic ball pen mechanism.

The second technical scheme adopted by the invention for solving the technical problems is as follows: the pilot valve comprises a valve body unit, a valve core and a driving rod; the valve body unit comprises a valve body, the valve core can be arranged in the valve body in a sliding mode, an inner cavity of the valve body is divided into a pressure cavity and a water outlet cavity through the valve core, a sealing element is mounted on the end face of the valve core corresponding to the water outlet cavity, the valve body is provided with two openings communicated with the water outlet cavity, the two openings are respectively formed in the side wall of the valve body and the bottom wall of the valve body, and whether the sealing element is in contact with the sealed valve body or not is controlled through sliding of the valve core so as to control the connection and disconnection of the two openings; the inner end of the driving rod is connected with the valve core together so as to drive the valve core to slide through the driving rod, and the outer end of the driving rod extends out of the valve body; the two openings can be set as a water inlet and a water division opening of the pilot valve according to requirements so that the pilot valve can be assembled into water outlet at the bottom water inlet side or water inlet at the bottom water outlet side.

The third technical scheme adopted by the invention for solving the technical problems is as follows: control valve device, include pilot valve and business turn over water subassembly, this business turn over water subassembly includes overcoat and lower coupling part, this overcoat can rotate to cup joint outside valve body portion, this lower coupling part includes the stator fixed relative to valve body portion and can be relative stator pivoted rotor, this overcoat cover is just transmission connection rotor under the coupling part outward, this overcoat is equipped with one and can put through an open-ended first water gap, this stator is equipped with one and can put through above-mentioned another open-ended second water gap, this rotor is equipped with two control ports, the cooperation of these two control ports and second water gap.

Compared with the background technology, the technical scheme has the following advantages:

the two openings can be set as a water inlet and a water division opening of the pilot valve according to requirements so that the pilot valve can be assembled into bottom water inlet side water outlet or bottom water outlet side water inlet, therefore, the water inlet and the water outlet can be conveniently exchanged, and the modular production can be realized.

Two water holes are arranged coaxially along the driving rod, the interchange of a water inlet and a water outlet is met through the difference of assembling modes, water paths required by various occasions such as showers and taps are met, the applicability is strong, in addition, the whole pilot valve is compact in structure, and various appearances can be matched.

The first through hole is a stepped hole with a large upper part and a small lower part and comprises a large hole section and a small hole section, a convex part is arranged on the lower part of the cover body in the valve body, the convex part is arranged in the large hole section, and the cover body is supported on the pressure forming seat, so that the structure is compact.

The end wall of the pressure forming seat facing the pressure forming cavity is concavely provided with a groove, and the cover body part positioned in the valve body is positioned in the groove and supported at the bottom of the groove, so that the structure is compact.

A pressure relief channel is arranged between the outer gland and the valve body, is positioned outside the valve body and is communicated with the two water holes, and the structure is compact.

Drawings

The invention is further described with reference to the following figures and detailed description.

Fig. 1 is a perspective view of a control valve device according to an embodiment.

FIG. 2 is a schematic cross-sectional view of a side-in bottom-out water control valve assembly of an embodiment in a closed position.

FIG. 3 is a schematic cross-sectional view of a side-in bottom-out water control valve assembly of an embodiment in an open position.

FIG. 4 is a cross-sectional view of the bottom inlet side outlet of a control valve assembly of an embodiment in a closed position.

FIG. 5 is a cross-sectional view of the bottom inlet side outlet of a control valve assembly of an embodiment in an open position.

FIG. 6 is a schematic cross-sectional exploded view of a control valve assembly according to one embodiment.

FIG. 7 is an exploded perspective view of a control valve assembly according to one embodiment.

FIG. 8 is an exploded perspective view in half section of a control valve assembly according to an embodiment.

FIG. 9 is a perspective view of a first actuator arm of a control valve assembly according to one embodiment.

FIG. 10 is a perspective view of a second actuator arm of a control valve assembly according to one embodiment.

FIG. 11 is a schematic diagram of an example of an application of the control valve apparatus according to the embodiment.

FIG. 12 is a perspective view of a second pilot valve according to an embodiment.

FIG. 13 is a schematic cross-sectional view of the side inlet and bottom outlet of the two pilot valves in the closed state according to the embodiment.

FIG. 14 is a schematic cross-sectional view of the side inlet and bottom outlet of the two pilot valves of the embodiment in an open state.

FIG. 15 is a cross-sectional view of the bottom inlet side of the second pilot valve in the closed position according to the embodiment.

FIG. 16 is a cross-sectional view of the bottom inlet side of the second pilot valve in an open state according to the first embodiment.

FIG. 17 is an exploded perspective view of the second pilot valve according to the embodiment.

FIG. 18 is a schematic perspective view of a half-section of a two-way valve according to an embodiment.

FIG. 19 is a schematic diagram of an application example of the second pilot valve according to the embodiment.

FIG. 20 is a schematic diagram of a second embodiment of the second pilot valve.

FIG. 21 is a third schematic diagram of an application example of the second pilot valve according to the embodiment.

Description of reference numerals: the water inlet and outlet assembly B is arranged on the water inlet and outlet of the pilot valve A; the automatic ball-point pen comprises a valve body unit 1, a valve core 2, a driving rod 3, a first cover body 4, a second cover body 5, a pressure relief channel 6 and an automatic ball-point pen mechanism 7; a valve body 11, a shell 12 and an outer gland 13; the device comprises a fixed seat 111, a base 112, a first opening 113, a second opening 114, a pressure forming cavity 115, a water outlet cavity 116 and a mounting groove 117; the pressing seat 21, the groove 211, the first through hole 212, the first sealing ring 213 and the sealing element 22; the buckle 31, the annular notch 32 and the second sealing ring 33; a first water hole 41, a first elastic body 42, a first protrusion 43; a second water hole 51, a second projection 52; a ratchet seat 71, an upper ratchet 72, an adapter 73 and a second elastic body 74; the outer sleeve 81, the lower seat 82, the fixed piece 83 and the movable piece 84.

Detailed Description

Example one

Referring to fig. 1 to 10, the control valve device includes a pilot valve a and a water inlet and outlet assembly B. The pilot valve a includes a valve body unit 1, a valve spool 2, and a drive rod 3. The valve body unit 1 includes a valve body 11, a housing 12, and an outer gland 13.

The valve body 11 includes a fixing base 111 and a base 112, the fixing base 111 and the base 112 are fixedly connected together to form an inner cavity in the valve body 11, a first opening 113 is formed on a side wall of the base 112, and a second opening 114 is formed on a bottom wall of the base 112. The valve core 2 is slidably disposed in the valve body 11 and divides the inner cavity of the valve body 11 into a pressure chamber 115 and a water outlet chamber 116 through the valve core 2, and the first opening 113 and the second opening 114 are both communicated with the water outlet chamber 116. The valve core 2 comprises a pressure forming seat 21, an annular groove is concavely arranged on the bottom surface (corresponding to the end surface of the water outlet cavity) of the pressure forming seat 21, a sealing element 22 is arranged in the annular groove, and whether the sealing element 22 contacts a base 112 of the sealing valve body 11 or not is controlled by sliding the valve core 2 to control the on-off of the two openings 113 and 114 so as to control the switch of the pilot valve A. The inner end of the driving rod 3 and the pressing seat 21 of the valve core 2 are connected together to drive the valve core 2 to slide through the driving rod 3, and the outer end of the driving rod 3 extends out of the valve body 11 for user control.

The pilot valve a further comprises two covers 4, 5 and a pressure relief channel 6. A cover body is sleeved outside the driving rod 3 and positioned in the pressure forming cavity 115, a first water hole 41 is formed between the cover body and the driving rod 3, the other cover body is sleeved outside the driving rod 3 and positioned outside the valve body 11, a second water hole 51 is formed between the other cover body and the driving rod 3, and the second water hole 51 and the first water hole 41 are coaxially arranged along the driving rod 3. The relief passage 6 is located outside the valve body 11 and communicates with the first water hole 41 and the second water hole 51. Further, a first elastic body 42 is disposed between the cover body located in the pressure forming chamber 115 and the top wall (corresponding to the end wall of the pressure forming chamber) of the fixing seat 111 of the valve body 11.

A groove 211 is concavely formed on the top surface (the end wall facing the pressure forming cavity) of the pressure forming base 21, a first through hole 212 penetrating along the sliding direction is concavely formed on the bottom of the groove 211, and the first through hole 212 is a stepped hole with a large top and a small bottom and comprises a large hole section and a small hole section. The inner end of the driving rod 3 extends out of the first through hole 212, and a buckle 31 is additionally arranged, wherein the buckle 31 is connected to the inner end of the driving rod 3, so that the driving rod 3 can drive the pressing seat 21 to move when the pressure is low. The outer peripheral wall of the pressure forming seat 21 is installed with a first sealing ring 213, and the first sealing ring 213 is connected to the inner peripheral wall of the fixing seat 111 of the valve body 11 in a sealing manner to isolate the pressure forming chamber and the water dividing chamber. The buckle 31 is matched with the driving rod, and the pressing seat is pulled up when the pressure is low, so that the problem that the pressure cannot be closed when the pressure is low is solved.

The shell 12 and the valve body 11 are fixed relatively, the shell 12 is located on the valve body 11, and the outer gland 13 is fixed at the lower end of the shell 12. The upper end wall of the fixed seat 111 of the valve body 11 is recessed to form an installation groove 117, and the cover body located outside the valve body is arranged between the outer gland 13 and the fixed seat 111 of the valve body 11. The pressure relief passage 6 is provided between the outer cover 13 and the fixing seat 111 of the valve body 11.

The outer end of the driving rod 3 passes through the outer pressing cover 13, the driving rod 3 can slide relative to the shell 12, an automatic ball-point pen mechanism 7 is arranged between the driving rod 3 and the shell 12, and the driving rod 3 forms a refill of the automatic ball-point pen mechanism 7. The automatic ball-point pen mechanism 7 includes a ratchet seat 71, an upper ratchet 72, an adaptor 73, and a second elastic body 74; the inner periphery of the upper section of the shell is provided with a ratchet seat 71, the upper ratchet 72 can be connected in the ratchet seat 71 in a sliding way and matched with the ratchet seat, the ratchet seat 71, the upper ratchet 72 and the external pressure cover 13 are all provided with ratchets, the driving rod passes through the upper ratchet and the ratchet seat, and the driving rod passes through the upper ratchet and the ratchet seat which are all sleeved outside the driving rod, so the height of the automatic ball-point pen mechanism 7 can be shortened; the adaptor 73 is fixed to the upper end of the driving rod, extends out of the ratchet seat 71 and forms a button of the automatic ball-point pen mechanism.

The pilot valve a of this embodiment is provided with two kinds of driving rods 3, 3 'and two second sealing rings 33, the outer peripheral walls of the two kinds of driving rods are both provided with annular notches 32, 32' in a concave manner, and the positions of the annular notches of the two kinds of driving rods are different. The two driving rods 3 and 3 'are respectively a first driving rod 3 and a second driving rod 3', the two covers 4 and 5 are respectively a first cover 4 and a second cover 5, a first protrusion 43 is arranged under the first cover, and a second protrusion 52 is arranged under the second cover 5. Wherein: 1. as shown in fig. 2 and 3, the annular notch 32 of the first driving rod 3 is matched with the first cover 4, the first cover 4 is located in the pressure forming cavity, the second cover 5 is located outside the valve body, the second sealing ring 33 is matched with the driving rod to form a pressure relief hole, and the second cover is matched with the driving rod to form a water replenishing hole; the two second sealing rings 33 are sleeved with the driving rod, the second cover body and the first cover body are arranged between the two second sealing rings, the opening on the side wall forms a water inlet, and the opening on the bottom wall forms a water outlet; the first cover body is provided with a first bulge part 43 in a downward protruding way, the first bulge part 43 is arranged in the large hole section, and the first cover body 4 is supported at the bottom of the groove of the pressing seat 21 so that the first cover body 4 is partially positioned in the groove; the second cover has a second protrusion 52 protruding downward, and the second protrusion 52 is disposed in the mounting groove 117. 2. As shown in fig. 4 and 5, the annular notch 32 'of the second driving rod 3' is matched with the first cover 4, the first cover 4 is located outside the valve body, the second cover 5 is located in the pressure forming cavity, the one of the second sealing rings 33 is matched with the driving rod to form a water drainage hole, and the second cover is matched with the driving rod to form a water replenishing hole; the two second sealing rings are sleeved with the driving rod and are respectively arranged at two sides of the first cover body 4, the openings at the side walls form a water inlet, and the openings at the bottom wall form a water outlet; the first projection 43 of the first cover is disposed in the mounting groove 117 and the second projection 52 of the second cover is disposed in the large hole section. Therefore, the replacement of side-in water and bottom-in water and side-out water can be met by replacing the driving rod and adjusting the setting position of the second sealing ring in a matched manner, so that most parts can be shared by the side-in water and the bottom-in water and the side-out water, and the modular production is realized.

The water inlet and outlet assembly B comprises a jacket 81 and a lower connecting part, the jacket can be rotatably sleeved outside the valve body part 1, the lower connecting part comprises a lower seat 82 fixedly connected with a lower port of the jacket, a fixed sheet 83 fixed below the base and a movable sheet 84 fixedly connected on the lower seat and capable of rotating relative to the fixed sheet, the jacket is provided with a first water through port capable of being communicated with an opening, the fixed sheet is provided with a second water through port capable of being communicated with the other opening, the movable sheet is provided with two control ports, and the two control ports are matched with the second water through port. Wherein: when water is discharged from the bottom water inlet side, the two control ports are respectively communicated with cold water and hot water so as to realize water temperature control through rotation; when the water enters the water inlet and exits from the water outlet, the two control ports are respectively communicated with the two water dividing paths so as to realize the switching control of the water paths through rotation.

The pilot valve of the present embodiment can be assembled into a bottom-in and side-out structure as well as a side-in and bottom-out structure. The driving rod penetrates through the second cover body and the first cover body to form a normally open first water hole or a normally open pressure relief hole; the fixing seat is matched with the outer pressing cover to be divided into an upper part and a lower part, the upper part is normally sealed by the outer pressing cover and the driving rod, and the lower part is matched with the second cover body or the first cover body to form a very sealed state or a normally open state. Wherein: the pressure of the water inlet cavity and the pressure of the water outlet cavity are equal to the pressure of the pressure forming cavity. When the driving rod is sealed with the second sealing ring on the second cover body, the pressing seat is in a balanced state, and the first elastic body on the pressing seat moves downwards to be sealed with the base, so that the pressure of the water outlet cavity is static pressure and is equal to 0, the pressure of the pressing cavity is greater than that of the water inlet cavity, the pressing seat is pressed downwards by the water pressure, and the sealing element and the base are better sealed. When the driving rod is separated from the second sealing ring on the second cover body, water in the pressure forming cavity is discharged to the water outlet cavity through the second cover body, the water inlet speed of the water inlet hole is smaller than the water outlet speed of the pressure relief hole, the pressure of the pressure forming cavity is reduced, the pressure forming cavity is smaller than the water inlet cavity, the pressure forming seat is pressed upwards by water pressure, and the pressure forming seat is opened at the moment. And when the water enters from the side and the bottom, the pressure forming seat is closed, except the elastic sealing of the second elastic body, and the friction force of the driving rod and the second sealing ring on the second cover body can also drive the pressure forming seat to move downwards until the pressure forming seat is sealed with the base. The water outlet from one bottom water inlet side is changed into the water outlet from the side water inlet and the bottom water inlet, and different functions can be realized only by replacing the assembly position relation of the valve core parts.

The cover body 5 located outside the valve body is convexly provided with a second protruding part 52, the second protruding part 52 is placed in the installation groove 117, and the second cover body 5 is arranged between the outer gland 13 and the fixed seat 111 of the valve body 11.

Referring to fig. 11, there is shown a schematic view of a control valve assembly applied to a kitchen faucet, which includes a faucet body C and a control valve assembly for controlling the water discharge from the faucet body C.

Example two

Referring to fig. 12 to 18, the pilot valve a includes a valve body unit 1, a valve spool 2, and a drive rod 3. The valve body unit 1 includes a valve body 11, a housing 12, and an outer gland 13. It differs from the first embodiment in that: the automatic ball-point pen mechanism 7 includes an upper ratchet 72, a button housing 75, a lower ratchet 76, and a second elastic body 74; the upper end of the driving rod is arranged in a lower ratchet 76, the lower ratchet 76 is arranged in an upper ratchet 72, the upper ratchet 72 is arranged in a button shell 75, the button shell 75 is arranged in the upper section of the shell, the bottom end parts of the upper ratchet 72, the button shell 75 and the lower ratchet 76 are all provided with ratchets and surround the driving rod, and the bottom end parts of the upper ratchet 72, the button shell 75 and the lower ratchet 76 are all provided with ratchets and surround the driving rod, so the height of the automatic ball-point pen mechanism 7 can be shortened; the button housing 75 extends above the housing and constitutes a button of an automatic ball point pen mechanism. The housing 12 is integrally formed with the valve body 11 and the fixing base 111. Referring to fig. 19, 20 and 21, it is a schematic structural view of a control valve device applied to a kitchen faucet, which includes a faucet body C and a pilot valve a, wherein the pilot valve a is installed at a water outlet port of the faucet body C, and can select bottom water inlet side water outlet or side water inlet side water outlet according to requirements.

The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents.