阅读说明：本技术 一种液压延时阀 (Hydraulic time-delay valve ) 是由 符立华 于 2020-05-30 设计创作，主要内容包括：一种液压延时阀,它包括按压帽、阀盖、阀体、缸盖、带连杆的活塞、延时球、上开口的缸筒、座板、压力弹簧、密封盖、阀芯组件、复位弹簧和底盖,缸盖和缸筒设在油压装置腔内,缸盖的上腔体伸出油压装置腔,压力弹簧与圆环形法兰和密封盖配合；阀杆与密封盖的阀杆孔滑动配合且液密封；阀盖与阀体的油压装置腔的外螺纹螺合,上腔体与阀盖滑动配合；座板两端与阀体上端卡槽嵌合,活塞将缸筒分成上储油腔和下液压油腔；按压帽的内螺纹座与上腔体外螺纹螺合。由缸筒、活塞和缸盖形成的液压延时,移动座与底水压腔构成水压延时；不受水质影响,延时时间长,使用寿命长。(A hydraulic time delay valve comprises a press cap, a valve cover, a valve body, a cylinder cover, a piston with a connecting rod, a time delay ball, a cylinder barrel with an upper opening, a seat plate, a pressure spring, a sealing cover, a valve core assembly, a return spring and a bottom cover, wherein the cylinder cover and the cylinder barrel are arranged in an oil pressure device cavity, the upper cavity of the cylinder cover extends out of the oil pressure device cavity, and the pressure spring is matched with an annular flange and the sealing cover; the valve rod is in sliding fit with the valve rod hole of the sealing cover and is in liquid sealing; the valve cover is screwed with the external thread of the oil pressure device cavity of the valve body, and the upper cavity body is in sliding fit with the valve cover; two ends of the seat plate are embedded with the clamping grooves at the upper end of the valve body, and the piston divides the cylinder barrel into an upper oil storage cavity and a lower hydraulic oil cavity; the internal thread seat of the pressing cap is screwed with the external thread of the upper cavity body. Hydraulic delay is formed by a cylinder barrel, a piston and a cylinder cover, and a movable seat and a bottom water pressure cavity form water pressure delay; not influenced by water quality, long delay time and long service life.)

1. A hydraulic time delay valve is characterized in that: it comprises a pressing cap, a valve cover, a valve body, a cylinder cover, a piston with a connecting rod, a time delay ball, a cylinder barrel with an upper opening, a seat plate, a pressure spring, a sealing cover, a valve core component, a return spring and a bottom cover,

an internal thread seat is arranged in the pressing cap;

the valve body comprises an oil pressure device cavity, a water outlet cavity, a water inlet cavity, a water guide hole and a bottom water pressure cavity, wherein the water guide hole and the bottom water pressure cavity are formed in a partition plate between the water inlet cavity and the water outlet cavity; a plurality of radial water outlet holes are formed in the water outlet cavity, and a bottom internal thread connecting part is arranged at the lower end of the bottom water pressure cavity;

the cylinder cover comprises an upper cavity, two axial guide holes arranged on the upper cavity in a straight radial direction, a lower internal thread cover body and a connecting rod hole arranged on the internal thread cover; the upper end of the upper cavity is provided with an external thread;

the piston comprises an upper oil cavity, a lower oil cavity, a valve core seat arranged at the junction of the upper oil cavity and the lower oil cavity and a slow flow groove arranged on the valve core seat, and the upper oil cavity is provided with a radial oil guide hole;

the cylinder barrel comprises a circular flange surrounding the cylinder barrel, an external thread connecting part arranged on the upper part of the circular flange and a valve rod,

the sealing cover comprises a valve rod hole arranged in the center and an external thread surrounding the sealing cover;

the valve core assembly comprises a water stop valve core arranged at the upper part, a movable seat arranged at the lower part, a spring cavity with a lower opening arranged on the movable seat and a valve rod sliding hole arranged on the water stop valve core; the valve rod sliding hole is communicated with the spring cavity;

the time delay ball is kept in the lower oil cavity through the clamp spring, the external thread connecting part of the cylinder barrel is screwed with the lower internal thread cover body of the cylinder cover, and the annular flange is matched with the lower internal thread cover body for stopping; the seat plate is arranged in the upper cavity of the cylinder cover, two ends of the seat plate extend out of the axial guide hole, the connecting rod is in sliding fit with the connecting rod hole and is in liquid seal, and the upper end of the connecting rod is fixedly connected with the seat plate through a nut; the sealing cover is screwed with the internal thread connecting part of the oil pressure device cavity and is hydraulically sealed, the cylinder cover and the cylinder barrel are arranged in the oil pressure device cavity, the upper cavity of the cylinder cover extends out of the oil pressure device cavity, and the pressure spring is matched with the annular flange and the sealing cover; the valve rod is in sliding fit with the valve rod hole of the sealing cover and is in liquid sealing; the valve cover is screwed with the external thread of the oil pressure device cavity of the valve body, and the upper cavity body is in sliding fit with the valve cover; two ends of the seat plate are embedded with the clamping grooves at the upper end of the valve body, and the piston divides the cylinder barrel into an upper oil storage cavity and a lower hydraulic oil cavity; the internal thread seat of the pressing cap is screwed with the external thread of the upper cavity body;

the movable seat of the valve core assembly is in sliding fit with the bottom water pressure cavity, the lower end of the valve rod penetrates through the valve rod sliding hole to be connected with the annular sealing ring, a water guide gap is formed by a gap between the valve rod and the valve rod sliding hole, the annular sealing ring is matched with the lower end of the valve rod sliding hole, the water stop valve core is matched with the water guide hole, the bottom cover is screwed with the bottom internal thread connecting part, and the reset spring is matched with the bottom cover and the spring cavity of the movable seat.

2. A hydraulic delay valve as claimed in claim 1, wherein: the valve cover comprises an internal thread cover body part and a guide channel;

the internal thread cover body part is screwed with the external thread at the upper end of the oil pressure device cavity, and the upper cavity of the cylinder cover is in sliding fit with the guide channel.

3. A hydraulic delay valve as claimed in claim 2, wherein: the internal thread cover body part of the valve cover is in sliding fit with the pressing cap.

4. A hydraulic delay valve as claimed in claim 1, wherein: the lower extreme in the valve rod hole of sealed lid is equipped with sealed chamber, is equipped with the sealing washer in the sealed chamber, the sealing washer with valve rod sliding fit and sealed.

5. A hydraulic delay valve as claimed in claim 1, wherein: an annular groove is formed in the outer circumferential surface of the movable seat of the valve core assembly;

the annular piston is embedded with the annular groove, and the annular piston is in sliding fit with the bottom water pressure cavity and is sealed.

Technical Field

The invention relates to a hydraulic time delay valve.

Background

At present, in the prior art, most of delay valve core springs in the market control delay valves with water, and the delay time is influenced by water quality, so that the service life of the delay valve is short and the delay valve is easy to lose efficacy. The utility model discloses the technique is exactly for a liquid control delay valve that the delay valve does not receive water quality influence design presses and feels light, time stabilization, receives the life longer.

Disclosure of Invention

The purpose of the invention is: the hydraulic delay valve has the characteristics of no influence of water quality, stable and long time and long service life.

The invention is realized by the following steps: a hydraulic time delay valve is characterized in that: it comprises a pressing cap, a valve cover, a valve body, a cylinder cover, a piston with a connecting rod, a time delay ball, a cylinder barrel with an upper opening, a seat plate, a pressure spring, a sealing cover, a valve core component, a return spring and a bottom cover,

an internal thread seat is arranged in the pressing cap;

the valve body comprises an oil pressure device cavity, a water outlet cavity, a water inlet cavity, a water guide hole and a bottom water pressure cavity, wherein the water guide hole and the bottom water pressure cavity are formed in a partition plate between the water inlet cavity and the water outlet cavity; a plurality of radial water outlet holes are formed in the water outlet cavity, and a bottom internal thread connecting part is arranged at the lower end of the bottom water pressure cavity;

the cylinder cover comprises an upper cavity, two axial guide holes arranged on the upper cavity in a straight radial direction, a lower internal thread cover body and a connecting rod hole arranged on the internal thread cover; the upper end of the upper cavity is provided with an external thread;

the piston comprises an upper oil cavity, a lower oil cavity, a valve core seat arranged at the junction of the upper oil cavity and the lower oil cavity and a slow flow groove arranged on the valve core seat, and the upper oil cavity is provided with a radial oil guide hole;

the cylinder barrel comprises a circular flange surrounding the cylinder barrel, an external thread connecting part arranged on the upper part of the circular flange and a valve rod,

the sealing cover comprises a valve rod hole arranged in the center and an external thread surrounding the sealing cover;

the valve core assembly comprises a water stop valve core arranged at the upper part, a movable seat arranged at the lower part, a spring cavity with a lower opening arranged on the movable seat and a valve rod sliding hole arranged on the water stop valve core; the valve rod sliding hole is communicated with the spring cavity;

the time delay ball is kept in the lower oil cavity through the clamp spring, the external thread connecting part of the cylinder barrel is screwed with the lower internal thread cover body of the cylinder cover, and the annular flange is matched with the lower internal thread cover body for stopping; the seat plate is arranged in the upper cavity of the cylinder cover, two ends of the seat plate extend out of the axial guide hole, the connecting rod is in sliding fit with the connecting rod hole and is in liquid seal, and the upper end of the connecting rod is fixedly connected with the seat plate through a nut; the sealing cover is screwed with the internal thread connecting part of the oil pressure device cavity and is hydraulically sealed, the cylinder cover and the cylinder barrel are arranged in the oil pressure device cavity, the upper cavity of the cylinder cover extends out of the oil pressure device cavity, and the pressure spring is matched with the annular flange and the sealing cover; the valve rod is in sliding fit with the valve rod hole of the sealing cover and is in liquid sealing; the valve cover is screwed with the external thread of the oil pressure device cavity of the valve body, and the upper cavity body is in sliding fit with the valve cover; two ends of the seat plate are embedded with the clamping grooves at the upper end of the valve body, and the piston divides the cylinder barrel into an upper oil storage cavity and a lower hydraulic oil cavity; the internal thread seat of the pressing cap is screwed with the external thread of the upper cavity body;

the movable seat of the valve core assembly is in sliding fit with the bottom water pressure cavity, the lower end of the valve rod penetrates through the valve rod sliding hole to be connected with the annular sealing ring, a water guide gap is formed by a gap between the valve rod and the valve rod sliding hole, the annular sealing ring is matched with the lower end of the valve rod sliding hole, the water stop valve core is matched with the water guide hole, the bottom cover is screwed with the bottom internal thread connecting part, and the reset spring is matched with the bottom cover and the spring cavity of the movable seat.

The hydraulic delay valve is characterized in that: the valve cover comprises an internal thread cover body part and a guide channel;

the internal thread cover body part is screwed with the external thread at the upper end of the oil pressure device cavity, and the upper cavity of the cylinder cover is in sliding fit with the guide channel.

The hydraulic delay valve is characterized in that: the internal thread cover body part of the valve cover is in sliding fit with the pressing cap.

The hydraulic delay valve is characterized in that: the lower extreme in the valve rod hole of sealed lid is equipped with sealed chamber, is equipped with the sealing washer in the sealed chamber, the sealing washer with valve rod sliding fit and sealed.

The hydraulic delay valve is characterized in that: an annular groove is formed in the outer circumferential surface of the movable seat of the valve core assembly;

the annular piston is embedded with the annular groove, and the annular piston is in sliding fit with the bottom water pressure cavity and is sealed.

The hydraulic delay valve adopts the structure, the hydraulic delay is formed by the cylinder barrel, the piston and the cylinder cover, and the movable seat and the bottom water pressure cavity form water pressure delay; not influenced by water quality, long delay time and long service life.

Drawings

Fig. 1 is a cross-sectional view of the present invention.

Fig. 2 is a view a-a of fig. 1.

Fig. 3 is one of the exploded perspective views of the present invention.

Fig. 4 is a second exploded perspective view of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1, a hydraulic delay valve comprises a pressing cap 1, a valve cover 2, a valve body 3, a cylinder cover 4, a piston 5 with a connecting rod 51, a delay ball 6, a cylinder 7 with an upper opening, a seat plate 8, a pressure spring 9, a sealing cover 10, a valve core assembly 11, a return spring 12 and a bottom cover 13,

an internal thread seat 1A is arranged in the pressing cap 1;

the valve body 3 comprises an oil pressure device cavity 31, a water outlet cavity 32, a water inlet cavity 33, a water guide hole 34 arranged on a partition plate between the water inlet cavity and the water outlet cavity, and a bottom water pressure cavity 35, wherein the diameter of the oil pressure device 31 is larger than that of the water outlet cavity 32, the upper end of the oil pressure device cavity 31 is provided with an external thread 311, and the bottom of the oil pressure device cavity 31 is provided with an internal thread connecting part 312; a plurality of radial water outlet holes 321 are formed in the water outlet cavity 32, and a water inlet hole 331 is formed in the water inlet cavity 33; the lower end of the bottom water pressure cavity 35 is provided with a bottom internal thread connecting part;

the cylinder cover 4 comprises an upper cavity 41, two axial guide holes 42 which are arranged on the upper cavity in a straight radial direction, a lower internal thread cover body 43 and a connecting rod hole 44 arranged on the internal thread cover; the upper end of the upper cavity 41 is provided with an external thread;

the piston 5 comprises an upper oil cavity 52, a lower oil cavity 53, a valve core seat 54 arranged at the junction of the upper oil cavity and the lower oil cavity, and a buffer groove 541 arranged on the valve core seat, wherein the upper oil cavity 52 is provided with a radial oil guide hole 521;

the cylinder barrel 7 comprises a circular flange 71 surrounding the cylinder barrel, an external thread connecting part arranged at the upper part of the circular flange and a valve rod 72,

the sealing cap 10 includes a valve stem hole 101 provided at the center and an external thread surrounding the sealing cap;

the valve core assembly 11 comprises a water-stopping valve core 111 arranged at the upper part, a movable seat 112 arranged at the lower part, a spring cavity 113 provided with a lower opening on the movable seat 112 and a valve rod sliding hole 114 arranged on the water-stopping valve core; the stem slide hole 114 communicates with the spring chamber 113;

the delay ball 6 is kept in the lower oil cavity 53 through the clamp spring 14, the external thread connecting part of the cylinder barrel 7 is screwed with the lower internal thread cover body 42 of the cylinder cover 4, and the annular flange 71 is matched with the lower internal thread cover body 42 for stopping; the seat plate 8 is arranged in an upper cavity 41 of the cylinder cover 4, two ends of the seat plate extend out of the axial guide holes 42, the connecting rod 51 is in sliding fit with the connecting rod hole 44 and is in liquid seal, and the upper end of the connecting rod 51 is fixedly connected with the seat plate 8 through the nut 15; the sealing cover 10 is screwed with the internal thread connecting part of the oil pressure device cavity 31 and is hydraulically sealed, the cylinder cover 4 and the cylinder barrel 7 are arranged in the oil pressure device cavity 71, the upper cavity 41 of the cylinder cover 4 extends out of the oil pressure device cavity 31, and the pressure spring 9 is matched with the annular flange 71 and the sealing cover 10; the valve rod 72 is in sliding fit with and liquid-tight with the valve rod hole 101 of the sealing cover 10; the valve cover 2 is screwed with the external thread of the oil pressure device cavity 31 of the valve body 3, and the upper cavity body 41 is in sliding fit with the valve cover 2; two ends of the seat plate 8 are embedded with the clamping grooves 36 at the upper end of the valve body 3, and the seat plate 8 is fixed by the valve cover 2; the internal thread seat A1 of the pressing cap 1 is screwed with the external thread of the upper cavity 41; the piston 5 divides the cylinder barrel into an upper oil storage cavity and a lower hydraulic oil cavity, and hydraulic oil is stored in the upper oil storage cavity and the lower hydraulic oil cavity;

the movable seat 112 of the valve core assembly 11 is in sliding fit and liquid seal with the bottom water pressure cavity 34, the lower end of the valve rod 72 penetrates through the valve rod sliding hole 114 to be connected with the annular sealing ring 16, a water guide gap is formed by a gap between the valve rod 72 and the valve rod sliding hole 114, the annular sealing ring 16 is in fit seal with the lower end of the valve rod sliding hole 114, the water stop valve core 111 is matched with the water guide hole 34, the bottom cover 13 is in threaded connection with the bottom internal thread connecting portion of the bottom water pressure cavity 35, and the return spring 12 is matched with the bottom cover 13 and the spring cavity 113 of the movable.

The valve cover 2 comprises an internal thread cover body part 21 and a guide channel 22;

the internal thread cover part 31 is screwed with the upper end external thread of the oil pressure device cavity 31, and the upper cavity 41 of the cylinder cover 4 is in sliding fit with the guide channel 22.

The internal thread cover body part of the valve cover 2 is in sliding fit with the pressing cap 1.

The lower end of the valve rod hole 101 of the sealing cover 10 is provided with a sealing cavity 102, a sealing ring 17 is arranged in the sealing cavity 102, and the sealing ring 17 is in sliding fit and sealing with the valve rod 71.

An annular groove 115 is arranged on the outer circumferential surface of the movable seat 112 of the valve core assembly 11;

and the annular piston 18 is further included, the annular piston 18 is embedded with the annular groove 18, and the annular piston 18 is in sliding fit and sealing with the bottom water pressure cavity 35.

As shown in fig. 1 and 2, when the present invention is used, the pressing cap 1 is pressed down, the cylinder cover 4 and the cylinder barrel 7 move downward, and the piston 5 is stationary; the time delay ball 6 leaves the valve core seat 54, and the hydraulic oil in the upper oil storage cavity enters the upper oil cavity 52, the valve core seat 54, the lower oil cavity 53 and then the lower hydraulic oil cavity through the radial oil guide hole 521;

the lower end of the valve rod 72 moves downwards, the valve core assembly 11 moves downwards through the movable seat 112 under the action of the water pressure of the water inlet cavity 33, and water in the bottom water pressure cavity 35 enters the water inlet cavity through a water guide gap between the valve rod 72 and the water guide hole 34; the water stop valve core 111 leaves the water guide hole 34, and water enters the water outlet cavity through the water inlet cavity 33 and the water guide hole 34 and then flows out through the radial water outlet hole 321 of the water outlet cavity 32;

when the hand is pressed to leave the pressing cap 1, the cylinder barrel 7 and the cylinder cover 4 move upwards under the action of the pressure spring 9, at the moment, the delay ball 6 is attached to the valve core seat 34, and hydraulic oil in the lower hydraulic oil chamber enters the upper oil storage chamber through the lower oil chamber 53, the slow flow groove 541 of the valve core seat 54 and the upper oil chamber 52; hydraulic oil slowly enters the upper oil storage cavity;

meanwhile, under the action of the return spring 12, the movable seat 112 moves upwards, and the water in the water inlet cavity 33 enters the bottom water pressure cavity 35 through the water guide gap; until the annular sealing ring 16 is attached to the top plate of the spring cavity 113 to seal the valve rod sliding hole 114;

hydraulic delay formed by a cylinder barrel, a piston and a cylinder cover, and hydraulic delay formed by the movable seat 112 and the bottom hydraulic cavity 35; not influenced by water quality, long delay time and long service life.

What has been described above is merely a preferred embodiment of the present invention. It should be noted that a person skilled in the art could make several modifications and variations without departing from the principle of the present invention, which should also be regarded as the protection scope of the present invention.