Novel distribution valve center elevator

Abstract

According to the novel distribution valve center elevator, a distribution valve is arranged outside a center cylinder, the distribution valve comprises an upper distribution valve and a lower distribution valve, and the upper distribution valve is arranged above the lower distribution valve; a support frame is arranged outside the central cylinder, and the lower distribution valve is supported by the support frame; a lifting arm is arranged in the center cylinder and extends out of the center cylinder, and the upper distribution valve is lifted through the lifting arm; an electric actuating mechanism, a supporting beam platform and a spherical coupling are further arranged in the center cylinder, the electric actuating mechanism is arranged on the supporting beam platform and electrically connected with an operation cabinet outside the center cylinder, the spherical coupling is arranged on the lifting arm, and the electric actuating mechanism and the spherical coupling are connected through a screw and a nut. And a valve electric device of the electric actuating mechanism drives the nut to rotate and drives the screw rod to move up and down. The transmission device is simple in structure, high in transmission efficiency, low in noise and stable in driving, and has the functions of self-locking, short-torsion overload protection, turn counting and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to hoist technical field, concretely relates to a novel distribution valve center hoist. BACKGROUND

[0002] The distribution valve is one of important components of the rotary table vacuum filter and the rotary disc vacuum filter, which is combined by the upper and lower distribution valves, and can separate different functional areas of the filter. Since the distribution valve is easy to scale inside during normal work, the upper distribution valve needs to be lifted regularly, and the hoist is needed in the process. The hoist is a mechanical equipment for transportation by changing potential energy.

[0003] The existing hoist driving modes include manual, ring chain lifting, hydraulic lifting, etc. The manual hoist is laborious to operate. The ring chain lifting mode is unstable and noisy due to the large chain pitch. The hydraulic lifting mode has many faults, is troublesome to maintain, and has high cost. The roller type hoist structure mentioned in the related patent CN209367705U rotary table filter distribution valve electric lifting device patent is complex, has large working resistance, and needs to be replaced regularly after the roller wears and has a certain risk of steel wire rope derailment. The ring chain hoist lifting machine mentioned in the patent CN110451424A filter upper distribution valve lifting device and its use method has low safety, single function, and lacks lifting opening indication, torque short protection, etc.

[0004] Therefore, it is necessary to design a novel distribution valve center hoist to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at the deficiencies of the prior art, and designs a novel distribution valve center hoist, which has simple structure, high transmission efficiency, low noise, stable driving, self-locking function, torque short overload protection function, and rotation counting function, and specifically adopts the following technical scheme:

[0006] A novel distribution valve center hoist, which comprises a distribution valve, the distribution valve is arranged outside a center cylinder, the distribution valve comprises an upper distribution valve and a lower distribution valve, the upper distribution valve is arranged above the lower distribution valve; a support frame is arranged outside the center cylinder to support the lower distribution valve; a lifting arm is arranged inside the center cylinder, the lifting arm extends out of the center cylinder, and the upper distribution valve is lifted by the lifting arm; an electric actuator, a support beam platform, and a spherical coupling are further arranged inside the center cylinder, the electric actuator is arranged on the support beam platform, the electric actuator is electrically connected with an operation cabinet outside the center cylinder, the spherical coupling is arranged on the lifting arm, the electric actuator and the spherical coupling are connected by a screw rod and a nut, and the nut is rotated and the screw rod is moved up and down by a valve electric device of the electric actuator.

[0007] Preferably, the screw rod and the screw nut are self-locking trapezoidal threads.

[0008] Preferably, a hand wheel is arranged on the electric actuator, and the distribution valve can be lifted by the hand wheel in the case of power failure.

[0009] Preferably, the electric actuator is a ZB / ZC type multi-rotation valve electric device, which has a rotation counting function and a torque overload protection function.

[0010] Compared with the closest prior art, the technical scheme provided by the utility model has the following beneficial effects:

[0011] 1. The utility model has simple structure, adopts a screw rod and screw pair direct driving mode, has high transmission efficiency, low noise and stable driving; the center single point lifting mode makes the lifting more stable, avoids the inclination and easy jamming phenomenon caused by asynchronization in the original multi-point lifting mode;

[0012] 2. The screw rod and the screw nut are self-locking trapezoidal threads, and the self-locking function can make the upper distribution valve stay at any position, the use safety factor of the elevator is higher, and the screw rod rigid connection has smaller dynamic swing than the original ring chain connection;

[0013] 3. The utility model is provided with a hand wheel, which can be used in the emergency situation without power failure in the working place to complete the distribution valve lifting operation. DETAILED DESCRIPTION

[0014] Figure 1 It is a structural schematic view of the center lifting machine of the utility model;

[0015] Wherein: 1, center cylinder, 2, electric actuator, 3, hand wheel, 4, screw nut 5, supporting beam platform, 6, screw rod, 7, spherical coupling, 8, lifting arm 9, upper distribution valve, 10, lower distribution valve, 11, operation cabinet. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0017] Please refer to Figure 1 The utility model provides a technical scheme:

[0018] The utility model provides a new distribution valve center hoist, including distribution valve, distribution valve sets up outside the center tube 1, distribution valve includes upper distribution valve 9 and lower distribution valve 10, upper distribution valve 9 sets up above lower distribution valve 10, support frame is arranged outside the center tube 1, and lower distribution valve 10 is supported through support frame, hoist arm 8 is arranged inside the center tube 1, and hoist arm 8 extends out of the center tube 1, and upper distribution valve 9 is hoisted through hoist arm 8, electric actuator 2, support beam platform 5 and spherical coupling 7 are further arranged inside the center tube 1, electric actuator 2 sets up on support beam platform 5, electric actuator 2 is electrically connected with operating cabinet 11 outside the center tube 1, spherical coupling 7 sets up on hoist arm 8, electric actuator 2 and spherical coupling 7 are connected through screw rod 6 and nut 4, and the valve electric device of electric actuator 2 drives nut 4 to rotate and drives screw rod 6 to move up and down.The utility model discloses simple structure adopts screw rod screw pair direct drive mode, and transmission efficiency is high, and noise is low, and drive is stable;Center single point mode promotes to make promotion more stable, avoids the inclination and easy to jam phenomenon of different step-by-step of original multi-point promotion.

[0019] Further, the screw rod 6 and the nut 4 are self-locking trapezoidal threads, and the self-locking function can make the upper distribution valve stay at any position, the use safety factor of the hoist is higher, and the rigid connection of the screw rod has smaller dynamic swing than the original ring chain connection.

[0020] Further, the electric actuator 2 is provided with a hand wheel 3, and in the case of power failure, the hand wheel drives the distribution valve to lift, which can be used in the emergency situation without power failure in the working place to complete the lifting operation of the distribution valve.

[0021] Further, the electric actuator 2 is of a ZB / ZC type multi-rotation valve electric device, which has a rotation counting function and a torque overload protection function. The torque overload protection function can stop the hoist arm in case of abnormal jamming and alarm. The rotation counting function can accurately display the position information of the upper distribution valve, and the hoist arm can stop working at the highest and lowest points without additional travel switches. The above embodiments are only used to illustrate the technical solutions of the utility model and not to limit them. Although the utility model has been described in detail with reference to the above embodiments, the ordinary skilled in the art can still modify or replace the specific embodiments of the utility model, and any modification or replacement without departing from the spirit and scope of the utility model is within the protection scope of the utility model.

Claims

1. A novel distribution valve center lifting machine, comprising a distribution valve, characterized in that: The distribution valve is located outside the central cylinder and includes an upper distribution valve and a lower distribution valve, with the upper distribution valve positioned above the lower distribution valve. A support frame is provided outside the central cylinder to support the lower distribution valve. A lifting arm is provided inside the central cylinder, extending out of the central cylinder to lift the upper distribution valve. An electric actuator, a support beam platform, and a ball coupling are also provided inside the central cylinder. The electric actuator is located on the support beam platform and is electrically connected to the operating cabinet outside the central cylinder. The ball coupling is located on the lifting arm and is connected to the electric actuator and the ball coupling by a screw and a nut. The valve electric device of the electric actuator drives the nut to rotate and drives the screw to move up and down.

2. The novel distribution valve center lifting machine according to claim 1, characterized in that: The screw and nut have self-locking trapezoidal threads.

3. The novel distribution valve center lifting machine according to claim 1, characterized in that: The electric actuator is equipped with a handwheel, which drives the distribution valve to rise and fall in the event of a power outage.

4. A novel distribution valve center lifting machine according to claim 1, characterized in that: The specific model of the electric actuator is ZB / ZC type multi-turn valve electric actuator, which has a built-in rotation counting function and torque overload protection function.

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