CN210687177U - Universal electric drive for controlling ball valves - Google Patents

Abstract

The utility model relates to a water supply, ventilation, ball valve control automation among air conditioner and the heating engineering system field discloses a general electric drive device for controlling the ball valve. The aim of the invention is to simplify the automation of an engineering system by saving material and time costs. In order to achieve the above object, the electric drive is fixed to the connecting rod of the ball valve by a connecting mechanism, wherein the connecting mechanism is composed of a mating connector having a protrusion, a transition washer and a fixing member. The gear box main shaft is provided with a through hole for configuring a ball valve connecting rod and a fixing element, and the main shaft is also provided with a groove which is positioned on one side of the electric driving device connected with the ball valve connecting rod. The transition washer is located in the recess of the spindle and the mating connector is fixedly attached to the electric drive housing and engages the ball valve housing via the protrusion. The proposed electric drive structure enables automation of an installed and operating engineering system without the need to dismantle any of the mass-produced ball valves.

Description

Universal electric drive for controlling ball valves

Technical Field

An electric drive device relates to the field of ball valve control automation in water supply, ventilation, air conditioning and heating engineering systems.

Background

Currently, electric drives are widely used for the above-mentioned system control automation.

An electric drive device for a ball valve in a water leakage prevention system is known from many manufacturers, including GIDROLOK

(https://gidrolock.ru/production/sharovoy-kran-s-elektroprivodom-gidrolock-professi onal/),NEPTUN

(https://neptun-mcs.ru/catalog/parts/valves_1/krany_sharovye_s_elektroprivodom_b ugatti_pro/kran_sharovyy_s_elektroprivodom_bugatti_pro_12v/).

The above-described electric drive is produced in conjunction with a ball valve, so that the electric drive of one manufacturer is not suited to the ball valve of another manufacturer and vice versa. When automation of an already installed and operating engineering system is required, it is necessary to disassemble the installed ball valve and install a new ball valve equipped with an electric drive, which adds significant material and labor costs. In addition, there is no electric drive available that can be installed on the lower price ball valves on the market.

A detachable electric drive is known, the gearbox of which is mounted on a bracket fixed to the water pipe. The purpose of controlling the ball valve is achieved by a lever connected to the gearbox of the electric drive and engaging with a lever on the connecting rod of the ball valve. (https:// youtu. be/JFmeP0sFlnA).

The electric drive has the following disadvantages:

only ball valves with levers on the control rod, not for ball valves with butterfly valves on the control rod;

the shape of the handle and the large size of the bracket for fixing the electric drive to the water pipe result in the device being suitable only for small-sized ball valves with low-torque switches;

the structure of the electric drive above the ball valve is not compact enough;

manual adjustment of the device is complicated in order to ensure that the electric drive is coaxial with the ball valve and that the switch position is fixed.

The installation of this device is complicated and the construction is not reliable due to the high number of threaded joints for connection and adjustment.

SUMMERY OF THE UTILITY MODEL

The proposed electric drive structure allows to automate already installed and operating engineering systems (heating, water supply, air conditioning, ventilation) without the need to dismantle any actual mass produced ball valve, including those of polypropylene housing. This results in a considerable saving of material and time costs and a considerable simplification of the automation of the engineering system.

In order to solve the defects existing in the prior art, the utility model provides a general electric drive device for controlling ball valve, it includes motor and the gear box that has the main shaft, electric drive device fixes on the connecting rod of ball valve through connecting mechanical device, wherein connect mechanical device by the meshing connector that has the arch, transition packing ring and fixed component constitute, be provided with the through-hole on the main shaft of gear box for dispose ball valve connecting rod and fixed component wherein still be equipped with the recess on the main shaft, the recess is located one side that electric drive device and ball valve connecting rod are connected, and wherein the transition packing ring is located the recess of main shaft, and meshing connector fixed connection is to electric drive device casing to through protruding and ball valve casing joint.

Adopt the technical scheme of the utility model afterwards, can be with electric drive snap-on the connecting rod of ball valve through the electric drive structure, consequently just also need not connect electric drive's casing and ball valve casing, but only need be connected to the connecting rod of ball valve with the casing that is used for transmitting electric drive main shaft moment of torsion. This makes the construction more compact and reliable.

The common principle of ball valve type, size and different manufacturers is achieved by using a set of connection mechanisms.

Drawings

Fig. 1 is a cross-sectional view of an electric drive on a ball valve.

The electric drive device comprises a main shaft 1, a main shaft 2, an electric drive device shell 3, a manual opening handle 4, an upper sealing washer 5, a limit switch rod 6, an upper plate 7, a main gear 8, a lower plate 9, a lower sealing washer 10, a ball valve connecting rod 11, a fixing nut 12, a fixing screw 13, a transition washer 14, a meshing connector 15, a ball valve shell 16, an unlocking button 17, an unlocking sealing washer 18, an unlocking gear 19, an intermediary gear 20, a return spring 21, a motor gear 22 and a motor.

Detailed Description

The electric drive consists of a spindle 1, which spindle 1 is located in an electric drive housing 2. In the upper part, the main shaft 1 has a groove for mounting a manual opening handle 3. An upper sealing washer 4 is pressed in the electric drive device shell 2 below the manual opening handle 3, and the upper sealing washer 4 is sleeved on the main shaft 1 to prevent water vapor from entering the electric drive device shell 2. The limit switch lever 5 is used to fix the limit position of the rotation of the electric drive. The limit switch rod 5 passes through a hole on the upper plate 6 and is fixed in a main gear 7, and the main gear 7 is fixed on the main shaft 1. Lower plate 8 is connected to upper plate 6 by a threaded connection. At the lower part of the electric drive housing 2, a lower sealing washer 9 is pressed in, the lower sealing washer 9 also fitting over the spindle 1 and protecting the electric drive housing 2 from moisture. The electric drive is mounted on the ball valve connecting rod 10 through a hole in the main shaft 1. If the ball valve connecting rod 10 is an externally threaded rod, the mounting of the electric drive is performed using the fixing nut 11 as a fixing element. If the ball valve chain link 10 is an internally threaded rod, the mounting of the electric drive is carried out using a fixing element consisting of a fixing nut 11 and a fixing screw 12. The transition washer 13 is placed in a groove on the main shaft 1 that is perfectly conformed to its shape and rests on a flat surface on the ball valve connecting rod 10. The engagement connector 14 is fixedly mounted on the electric drive housing 2 and engages with the ball valve housing 15 by means of a projection. The fixing nut 11, the fixing screw 12, the transition washer 13 and the engagement connector 14 are all part of a connection mechanism ensuring a fixed connection between the electric drive and the ball valve.

The electric drive is manually controlled using an unlocking button 16, on which unlocking button 16 an unlocking sealing washer 17 is mounted which prevents moisture from penetrating into the interior of the electric drive housing. The unlocking gear 18 is movably mounted on the shaft and is kept in mesh with the intermediate gear 19 under the action of a return spring 20. The electric drive gearbox comprises a main shaft 1 and a main gear 7 mounted on said main shaft 1, a set of intermediate gears 19 and an unlocking gear 18 mounted on the shaft and fixed between the upper plate 6 and the lower plate 8, and an on-shaft motor gear 21 fixed to a motor 22. The motor 22 is fixedly mounted on the upper plate 6 and can rotate in both directions.

Principle of operation

In the automatic mode, the torque of the shaft of the motor 22 is transmitted to the main gear 7 and the main shaft 1 through the motor gear 21, and then through a set of intermediate gears 19, the unlock gear 18. The main shaft 1 fixedly connected to the ball valve connecting rod 10 through the transition washer 13 and fixed by the fixing member transmits a torque to the ball valve connecting rod 10, thereby controlling the opening or closing of the ball valve.

The use of the engagement connector 14 with the protrusion prevents the electric drive housing 2 from rotating relative to the ball valve. The limit switch lever 5 is used to stop the movement and to fix the electric drive in the limit position, in which the limit switch lever 5 presses the limit switch, thereby breaking the electric circuit and prohibiting the motor from continuing to rotate in that direction. In the manual mode, the unlock button 16 is pressed while the unlock gear 18 is pressed and disengaged from the idler gear 19. The main shaft 1 is disconnected from the motor shaft and the ball valve can be opened or closed using a manually opened handle 3.

Claims (1)

1. A universal electric drive for controlling ball valves, comprising an electric motor and a gearbox with a spindle, characterized in that the electric drive is fastened to a connecting rod of the ball valve by means of a connecting mechanism, wherein the connecting mechanism is formed by a meshing connector with a protrusion, a transition washer and a fastening element, that a through-hole is provided in the spindle of the gearbox for arranging therein the ball valve connecting rod and the fastening element, that a recess is provided in the spindle on the side of the electric drive connected to the ball valve connecting rod, wherein the transition washer is located in the recess of the spindle and the meshing connector is fixedly connected to the electric drive housing and engages with the ball valve housing by means of the protrusion.

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