CN105179716A - Right-angled electric valve based on pilot structure - Google Patents

Abstract

The invention belongs to the technical field of valve equipment, and particularly relates to a right-angle electric valve based on a pilot structure, including a valve body, a valve cover is fixedly installed above the valve body, and the support frame is fixedly installed above the valve cover , the supporting frame is fixedly installed with a driving mechanism fixing frame, and the driving mechanism fixing frame is fixedly installed with a driving mechanism. The driving mechanism is fixedly connected; the pilot rod is cooperating with the valve cover to install a pressure plate, the other end of the pilot rod is threadedly connected with a pilot valve core, and the pilot valve core is equipped with a valve core closing plug in cooperation with the outside. A spool is provided in the external threaded connection of the spool closure plug; the valve body is provided with a feed port on the side far away from the spool, and a discharge port is provided below the spool; the valve adopts a pilot structure, which can realize The valve opens quickly and the opening torque is small, which greatly improves the service life.

Description

A Right Angle Electric Valve Based on Pilot Structure

technical field

The patent of the invention belongs to the technical field of valve equipment, and in particular relates to a right-angle electric valve based on a pilot structure.

Background technique

A valve is a device used to control the direction, pressure , and flow of a fluid in a fluid system. It is a device that enables or stops the flow of media (liquid, gas, powder) in piping and equipment and controls its flow. The control of the valve can adopt a variety of transmission methods, such as manual, electric, hydraulic, pneumatic, turbine, electromagnetic, electro-hydraulic, electro-hydraulic, gas-hydraulic, spur gear, bevel gear drive, etc.; can be driven by pressure, temperature Under the action of sensing signals in other forms, it acts according to predetermined requirements, or simply opens or closes without relying on sensing signals. The valve relies on driving or automatic mechanisms to make the opening and closing parts lift, slide, swing or rotate. Movement, thereby changing the size of its flow channel area to realize its control function. During the "Eleventh Five-Year Plan" and the next few years, China's petrochemical, natural gas, metallurgical industries, electric power, urban construction and other industries have a large demand for valves. During the "Eleventh Five-Year Plan" period, China's total demand for valves will reach 345 Therefore, the valve industry has a huge market development space.

Right-angle valve, that is, the direction of liquid flowing into the valve and the direction of flowing out of the valve are at a 90-degree angle; most traditional right-angle valves are directly driven by the valve stem to open the valve core, and the opening torque is often large, and the opening speed is slow, seriously Affect work efficiency, and at the same time cause energy waste to a certain extent. Therefore, it is urgent to design a right-angle valve with small opening torque and high speed.

Contents of the invention

The patent of the present invention provides a right-angle electric valve based on a pilot structure to solve the problems of large opening torque and slow speed in the above-mentioned background technology.

The technical problem solved by the patent of the present invention is achieved by the following technical solutions: The patent of the present invention provides a right-angle electric valve based on a pilot structure, including a valve body, a material inlet, a valve core, a valve cover sealing ring, a pressure plate, and a support frame , driving mechanism fixing frame, driving mechanism, pilot rod sealing ring, bonnet, pilot rod, spool closing plug, spool sealing plug sealing ring, spool sealing ring, pilot spool, discharge port; above the valve body A bonnet is fixedly installed, the support frame is fixedly installed above the bonnet, a drive mechanism fixing frame is fixedly installed on the support frame, and a drive mechanism is fixedly installed on the drive mechanism fixing frame. The inside of the support frame is threadedly connected with the pilot rod, and the upper end of the pilot rod is fixedly connected with the driving mechanism; the pilot rod is fitted with the valve cover and is provided with a pressure plate, and the other end of the pilot rod is threadedly connected with a Pilot spool, the outer part of the pilot spool is equipped with a spool closing plug, and the external screw connection of the spool closing plug is provided with a spool; the side of the valve body away from the spool is provided with a material inlet , a discharge port is provided below the valve core.

The patent of the present invention is further provided that the upper end surface of the valve core is provided with a fixed boss that cooperates with the sealing ring of the valve core closing plug, and the valve core is provided with a valve core thread that is threadedly connected with the valve core closing plug. hole, the inside of the spool is provided with a spool cavity, the spool is provided with a spool sealing groove that is installed in conjunction with the spool sealing ring, and the spool is provided with a Cooperate with the fixed boss of the spool sealing ring installed, a counterbore A is provided under the inner cavity of the spool, and a pilot hole is provided under the inner cavity of the spool, and the counterbore A and the pilot hole are evenly aligned with the Pilot spool fit.

The patent of the present invention is further provided that the upper end surface of the pilot spool is provided with a pilot spool blind hole, and the pilot spool blind hole is provided with a pilot spool threaded hole that is threadedly connected with the pilot rod. The pilot spool is provided with a through hole B and a through hole C communicating with the blind hole of the pilot spool, and the lower end of the pilot spool is tapered.

The patent of the present invention is further provided that the valve core sealing plug is provided with a valve core sealing plug sealing groove that cooperates with the valve core sealing plug sealing ring, and that the valve core sealing plug is provided with a sealing groove that cooperates with the pilot valve core. The through hole A of the spool closure plug is provided with a spool closure plug thread that is threadedly connected with the spool.

The patent of the present invention is further set as follows: the upper part of the valve cover is provided with a counterbore B cooperating with the pressure plate, and the valve cover is provided with a through hole D cooperating with the pilot rod; There is a bonnet sealing groove cooperating with the bonnet sealing ring.

The patent of the present invention is further provided that the inside of the support frame is provided with a threaded hole A that is threadedly matched with the pilot rod, and the lower end surface of the support frame is provided with a convex ring that is matched with the pressure plate.

The patent of the present invention is further provided that a counterbore C is provided on the upper surface of the pressing plate, the thickness of the pressing plate is smaller than the height of the counterbore B, and a through hole E is provided on the pressing plate to cooperate with the pilot rod.

The patent of the present invention further sets that the direction of the material inlet and the direction of the material outlet form an angle of 90 degrees, and both the material inlet and the material outlet are fixedly installed with connecting flanges.

The patent of the present invention further provides that the valve body and the valve cover are connected by bolts, the valve cover and the support frame are connected by bolts, and the drive mechanism fixing frame and the support frame are connected by bolts. It is connected by bolts; the drive mechanism is equipped with a worm gear reducer and a servo motor inside.

The patent of the present invention is further provided that a valve cover sealing ring is fixedly installed between the valve cover and the valve body; a valve core sealing plug sealing ring is threadedly connected between the valve core closing plug and the valve core; A spool sealing ring is fixedly installed on the spool; a pilot rod sealing ring is cooperatingly installed between the lower end surface of the pressure plate and the pilot rod; the pilot rod sealing ring, the bonnet sealing ring, the The sealing ring of the valve core closing plug and the sealing ring of the valve core are both O-shaped sealing rings.

The beneficial effects of the patent of the present invention are:

1. This patent adopts the pilot structure, and uses the upward movement of the pilot valve core to form a pressure difference to realize the automatic and rapid opening of the valve core, which greatly reduces the opening force, saves energy consumption, improves the opening speed, and greatly increases the service life of the mechanism , Energy saving is convenient and fast.

2. By using worm gear reducer and servo motor as the driving mechanism, the driving pilot rod is more accurate and stable, replacing manual operation and reducing the labor intensity of operation.

3. By setting the pressure plate and setting the convex ring under the support frame, the sealing ring of the pilot rod on the lower end surface of the pressure plate can be compressed and fixed, which ensures the reliability of the seal of the pilot rod and makes the mechanism design more flexible.

4. By setting the fixed boss of the valve core sealing ring on the valve core, it effectively avoids the failure of the valve core sealing ring to turn over under the action of high-pressure liquid, ensures the reliability of the valve work, and greatly improves the service life of the valve.

5. By setting the valve core closing plug, the inner cavity of the valve core can be effectively closed, and at the same time, it is convenient to process, install and disassemble the valve core, and the mechanism design is more flexible.

6. By setting the sealing ring of the valve cover, the sealing ring of the valve plug and the sealing ring of the valve core, the reliability of the sealing is ensured, the waste of resources is avoided, and the mechanism design is more flexible and reliable.

7. The patented invention has simple structure, convenient operation, excellent function and good market prospect.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the electric valve in the closed state of the patent of the present invention.

Fig. 2 is a structural schematic diagram of the open state of the electric valve of the patent of the present invention.

Fig. 3 is a schematic diagram of the structure of the valve body of the patent of the present invention.

Fig. 4 is the main sectional view of the spool of the patent of the present invention.

Fig. 5 is a front view of the spool of the patent of the present invention.

Fig. 6 is a top view of the spool of the patent of the present invention.

Fig. 7 is the main sectional view of the pilot spool of the patent of the present invention.

Fig. 8 is a front view of the pilot spool of the patent of the present invention.

Fig. 9 is a top view of the pilot spool of the patent of the present invention.

Fig. 10 is a main sectional view of the valve core closing plug of the patent of the present invention.

Fig. 11 is a front view of the valve core closing plug of the patent of the present invention.

Fig. 12 is a top view of the spool closure plug of the patent of the present invention.

The patent of the present invention is further described below in conjunction with accompanying drawing:

In the figure: 1-valve body, 2-feed inlet, 3-spool, 4-bonnet sealing ring, 5-pressure plate, 6-support frame, 7-rotary handle, 8-lock nut, 9-pilot rod Sealing ring, 10-bonnet, 11-pilot rod, 12-spool closing plug, 13-spool sealing ring, 14-spool sealing ring, 15-pilot spool, 16-outlet, 120- Through hole A, 121-sealing groove of spool closing plug, 122-thread of spool closing plug, 150-threaded hole of pilot spool, 151-blind hole of pilot spool, 152-through hole B, 153-through hole C, 30 -fixed boss, 31-spool threaded hole, 32-spool inner cavity, 33-spool sealing groove, 34-spool sealing ring fixing boss, 35-counterbore A, 36-pilot hole.

Detailed ways

The present invention will be further described below with reference to the accompanying drawings and examples, and the embodiments of the present invention include but not limited to the following examples.

Example:

As shown in Figure 1, Figure 2 and Figure 3, this embodiment includes a valve body 1, a material inlet 2, a valve core 3, a valve cover sealing ring 4, a pressure plate 5, a support frame 6, a drive mechanism fixing frame 7, and a drive mechanism. Mechanism 8, pilot rod sealing ring 9, valve cover 10, pilot rod 11, spool closing plug 12, spool sealing plug sealing ring 13, spool sealing ring 14, pilot spool 15, discharge port 16; valve body 1 The top is fixedly installed with a bonnet 10, the top of the bonnet 10 is fixedly installed with a support frame 6, the support frame 6 is fixedly installed with a drive mechanism fixed frame 7, and the drive mechanism fixed frame 7 is fixedly installed with a drive mechanism 8, supporting The inside of the frame 6 is threadedly connected with the pilot rod 11, and the upper end of the pilot rod 11 is fixedly connected with the driving mechanism 8; , the pilot spool 15 is installed externally with a spool closing plug 12, and the spool closing plug 12 is externally threaded to be provided with a spool 3; A discharge port 16 is provided below.

The patent of the present invention is further set as, as shown in Fig. 4, Fig. 5, Fig. 6, the upper end surface of spool 3 is provided with the fixed boss 30 that cooperates with spool sealing plug sealing ring 13, and spool 3 is provided with the fixed boss 30 that cooperates with spool. The spool threaded hole 31 of the closing plug 12 threaded connection, the spool 3 is provided with a spool inner chamber 32, the spool 3 is provided with a spool seal groove 33 cooperating with the spool sealing ring 14, and the spool 3 is provided with There is a valve core sealing ring fixing boss 34 cooperating with the valve core sealing ring 14, a counterbore A35 is provided below the valve core inner cavity 32, a pilot hole 36 is provided below the valve core inner cavity 32, a counterbore A35, and a pilot hole 36 Cooperate evenly with the pilot spool 15.

The patent of the present invention is further set as, as shown in Fig. 7, Fig. 8, Fig. 9, the upper end surface of pilot spool 15 is provided with pilot spool blind hole 151, and pilot spool blind hole 151 is provided with pilot rod 11 threads. The threaded hole 150 of the connected pilot spool, the pilot spool 15 is provided with a through hole B152 and a through hole C153 communicating with the blind hole 151 of the pilot spool, and the lower end of the pilot spool 15 is tapered.

The patent of the present invention is further set as, as shown in Fig. 10, Fig. 11, Fig. 12, the spool closure plug 12 is provided with the spool closure plug sealing groove 121 that cooperates with the spool closure plug sealing ring 13, the spool closure plug 12 A through hole A120 cooperating with the pilot spool 15 is provided on the top, and a spool closing plug thread 122 threadedly connected with the spool 3 is provided on the spool closing plug 12 .

The patent of the present invention is further set as follows: the upper part of the bonnet 10 is provided with a counterbore B cooperating with the pressure plate 5, and the bonnet 10 is provided with a through hole D cooperating with the pilot rod 11; Ring 4 cooperates with the installed bonnet seal groove.

The patent of the present invention is further provided that the inside of the support frame 6 is provided with a threaded hole A threaded with the pilot rod 11 , and the lower end of the support frame 11 is provided with a convex ring that cooperates with the pressure plate 5 .

The patent of the present invention is further provided that the upper end surface of the pressing plate 5 is provided with a counterbore C, the thickness of the pressing plate 5 is smaller than the height of the counterbore B, and the pressing plate 5 is provided with a through hole E which is fitted with the pilot rod 11 .

The patent of the present invention is further provided that the direction of the material inlet 2 and the direction of the material outlet 16 form an angle of 90 degrees, and both the material inlet 2 and the material outlet 16 are fixedly installed with connecting flanges.

The patent of the present invention is further provided that the valve body 1 and the valve cover 10 are connected by bolts, the valve cover 10 and the support frame 6 are connected by bolts, and the drive mechanism fixing frame 7 and the support frame 6 are connected by bolts; the drive mechanism 7. There is a worm gear reducer and a servo motor inside.

The patent of the present invention is further set as, the bonnet sealing ring 4 is fixedly installed between the bonnet 10 and the valve body 1; The spool closing plug 12 is threadedly connected with the spool 3 and is provided with a spool closing plug sealing ring 13; The valve core sealing ring 14 is fixedly installed on the core 3; the pilot rod sealing ring 9 is installed between the lower end surface of the pressure plate 5 and the pilot rod 11; the pilot rod sealing ring 9, the valve cover sealing ring 4, and the valve core sealing plug are sealed Ring 13 and spool sealing ring 14 are O-shaped sealing rings.

In actual use, as shown in Figure 1, the pilot rod 11 moves downward under the driving action of the driving mechanism 8, thereby driving the pilot spool 15 to move downward to close the pilot hole 36 below the spool 3, so that the spool 3 is in the liquid Under the action of power, it moves downward, and finally the sealing ring 14 of the valve core is pressed on the valve body 1, thereby realizing the closed state of the valve; as shown in Figure 2, when the driving mechanism 8 drives the pilot rod 11 to move upward in the opposite direction, the pilot The spool 15 moves upward to open the pilot hole 36, and the liquid quickly flows through the through hole B152 on the pilot spool 15, passes through the blind hole 151 of the pilot spool, and flows out from the through hole C153, and finally the liquid quickly flows from the inner cavity 32 of the spool through the pilot hole 36 to The discharge port 16, so that the upper and lower surfaces of the valve core 3 quickly form a pressure difference, and the valve core 3 is quickly and automatically opened under the action of the pressure difference, thereby realizing the open state of the valve.

Utilize the technical solution described in the patent of the present invention, or those skilled in the art design similar technical solutions under the inspiration of the technical solution of the patent of the present invention, and achieve the above technical effects, all fall into the protection scope of the patent of the present invention .

Claims (10)

1. A right-angle electric valve based on a pilot structure, characterized in that it includes a valve body (1), a material inlet (2), a valve core (3), a valve cover sealing ring (4), a pressure plate (5), Support frame (6), driving mechanism fixing frame (7), driving mechanism (8), pilot rod sealing ring (9), valve cover (10), pilot rod (11), spool closing plug (12), spool Closing plug sealing ring (13), valve core sealing ring (14), pilot valve core (15), discharge port (16); the valve body (1) is fixedly installed with a valve cover (10), and the The support frame (6) is fixedly installed on the top of the valve cover (10), the drive mechanism fixing frame (7) is fixedly installed on the support frame (6), and the drive mechanism fixing frame (7) is fixedly installed A drive mechanism (8) is provided, the inside of the support frame (6) is threadedly connected with the pilot rod (11), and the upper end of the pilot rod (11) is fixedly connected with the drive mechanism (8); the pilot rod (11) A pressure plate (5) is installed in cooperation with the bonnet (10), and the other end of the pilot rod (11) is threadedly connected with a pilot spool (15), and the pilot spool (15) is externally fitted A spool closing plug (12) is installed, and the spool (12) is externally threaded to be provided with a spool (3); the side of the valve body (1) away from the spool (3) is provided with There is a material inlet (2), and a material outlet (16) is provided under the valve core (3). 2. A right-angle electric valve based on pilot structure according to claim 1, characterized in that: the upper end surface of the valve core (3) is provided with a fixing ring (13) that cooperates with the valve core sealing ring (13). Boss (30), the valve core (3) is provided with a valve core threaded hole (31) threadedly connected with the valve core closing plug (12), and the inside of the valve core (3) is provided with a cavity (32), the spool (3) is provided with a spool sealing groove (33) that is fitted with the spool sealing ring (14), and the spool (3) is provided with a The core sealing ring (14) cooperates with the installed valve core sealing ring fixing boss (34), the counterbore A (35) is provided under the valve core cavity (32), and the valve core cavity (32) is provided with There is a pilot hole (36), and the counterbore A (35) and the pilot hole (36) evenly cooperate with the pilot valve core (15). 3. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: the upper end surface of the pilot spool (15) is provided with a blind hole (151) for the pilot spool, and the pilot spool The pilot valve core threaded hole (150) threadedly connected with the pilot rod (11) is provided on the valve core blind hole (151), and the pilot valve core (15) is provided with the pilot valve core blind hole (150). 151) communicate with through hole B (152) and through hole C (153), and the lower end of the pilot spool (15) is tapered. 4. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: the valve core closing plug (12) is provided with a sealing ring (13) that cooperates with the valve core closing plug The sealing groove (121) of the spool closing plug (12). A valve core closing plug thread (122) threadedly connected with the valve core (3) is provided. 5. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: a counterbore B fitted with the pressure plate (5) is provided above the valve cover (10), and the The bonnet (10) is provided with a through hole D that is installed in cooperation with the pilot rod (11); the bonnet (10) is provided with a bonnet sealing groove that is installed in cooperation with the bonnet sealing ring (4) . 6. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: the support frame (6) is provided with a threaded hole A threaded with the pilot rod (11), so The lower end surface of the support frame (11) is provided with a convex ring matched with the pressure plate (5). 7. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: the upper end surface of the pressure plate (5) is provided with a counterbore C, and the thickness of the pressure plate (5) is smaller than the counterbore B height, the pressure plate (5) is provided with a through hole E that is fitted with the pilot rod (11). 8. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: the direction of the inlet (2) and the direction of the outlet (16) form an angle of 90 degrees, Both the material inlet (2) and the material outlet (16) are fixedly installed with connecting flanges. 9. A right-angle electric valve based on pilot structure according to claim 1, characterized in that: the valve body (1) and the valve cover (10) are connected by bolts, and the valve cover ( 10) It is connected with the support frame (6) by bolts, and the drive mechanism fixing frame (7) is connected with the support frame (6) by bolts; the drive mechanism (7) is equipped with a worm gear inside Worm reducer, servo motor. 10. A right-angle electric valve based on a pilot structure according to claim 1, characterized in that: a valve cover sealing ring (4) is fixedly installed between the valve cover (10) and the valve body (1) The valve core sealing plug (12) and the valve core (3) are threadedly connected with a valve core sealing plug sealing ring (13); the valve core (3) is fixedly installed with a valve core sealing ring (14); the lower end surface of the pressure plate (5) and the pilot rod (11) are fitted with a pilot rod sealing ring (9); the pilot rod sealing ring (9), the bonnet sealing ring (4), the sealing ring of the valve core sealing plug (13) and the sealing ring of the valve core (14) are all O-rings.