Electric push rod type gate valve

Abstract

The utility model discloses an electric push rod type gate valve which comprises a frame (1), a valve plate (2), an electric push rod (3), an inductance type position sensor (4), an electrical element module (5) and a PLC (Programmable Logic Controller) (6), a movable guide rail is arranged on the frame (1), and the frame (1) is connected with the valve plate (2) in a sliding mode through the movable guide rail. The electric push rod (3) is arranged on the frame (1) in a penetrating manner and is provided with a box body and a telescopic pipe, the box body is fixed on the frame (1), and the telescopic pipe is fixedly connected with the valve plate (2); a plurality of inductive position sensors (4) are arranged on one side of the frame (1) and are connected with the electrical element module (5); and the electrical element module (5) is respectively connected with the electric push rod (3) and the PLC (6). According to the gate valve provided by the utility model, the correct operation and on-off state of the gate valve can be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially relates to a kind of electric push rod formula gate valve. BACKGROUND

[0002] Gate valve is widely used in chemical industry, machinery, metallurgy and other industries in pipeline system or vacuum furnace equipment, mainly play sealing role, with valve body diameter without recess, medium will not jam the advantage of blockage.The driving mechanism of prior art gate valve mainly includes gear rack mechanism, and screw nut mechanism matched with mechanical stopper.The above-mentioned two driving mechanisms are prone to cause switch failure caused by wear of mechanical parts in driving mechanism after long time running, and cannot guarantee the accurate operation of including unloading, trucking and loading train and other warehouse process. SUMMARY

[0003] Therefore, the utility model discloses a kind of electric push rod formula gate valve, can realize the correct operation and switch state of gate valve.

[0004] In the first aspect, the utility model provides a kind of electric push rod formula gate valve, it is characterized in that, including: frame, valve plate, electric push rod, inductive position sensor, electrical element module, PLC controller;

[0005] The frame is equipped with movable guide rail, and the frame is slidably connected with the valve plate by the movable guide rail;The electric push rod is arranged on the frame, and the electric push rod is provided with box and telescopic pipe, the box is fixed on the frame, and the telescopic pipe is fixedly connected with the valve plate;

[0006] The frame is equipped with a plurality of inductive position sensors on one side, and the inductive position sensor is connected with the electrical element module;The electrical element module is connected with the electric push rod, the PLC controller respectively.

[0007] Preferably, the electrical element module includes: contactor, relay, the contactor is connected with the relay;The electrical element module is connected with the PLC controller by the relay.

[0008] Preferably, the PLC controller can receive position signal and / or control signal.

[0009] Preferably, the position signal is the signal generated and sent by inductive position sensor inductive valve plate position.

[0010] Preferably, the electrical element module can receive the control signal sent from the PLC controller; when the electrical element module receives the control signal, the action of the electric push rod is controlled according to the control signal, and the action of the valve plate is driven by the action of the electric push rod.

[0011] The utility model has the beneficial effect as follows:

[0012] The utility model discloses a PLC controller controls the on-off state of the plug-in valve, and according to the feedback signal of the inductive position sensor, accurate positioning is carried out, and the structure is simple and easy to control, so that the correct operation and on-off state of the plug-in valve are realized, the unloading into warehouse process, the steam transport out of warehouse process and the loading into train out of warehouse process are guaranteed to run, so as to avoid problems such as mixed material, heavy load shutdown, major machine damage failure and the like.

[0013] Other features and advantages of the utility model will be set forth in the subsequent description, and partially become obvious from the description, or be understood by implementing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structure specially pointed out in the description, claims and drawings.

[0014] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are specifically described, and the accompanying drawings are combined for detailed description as follows. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 The utility model provides a kind of electric push rod type plug-in valve structure schematic view for embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantage of the embodiment of the utility model more clear, the technical scheme of the utility model will be clearly and completely described in the following with reference to the drawings, obviously, the described embodiment is part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the utility model.

[0018] In order to facilitate the understanding of the embodiment, the drawings are combined Figure 1The electric push rod type gate valve disclosed in the embodiment is introduced in detail.

[0019] Embodiment 1: An electric push rod type gate valve, comprising:

[0020] The frame 1, the valve plate 2, the electric push rod 3, the inductive position sensor 4, the electrical element module 5, and the PLC controller 6.

[0021] The frame 1 is provided with movable guide rails, and the frame 1 is slidably connected with the valve plate 2 through the movable guide rails. The electric push rod 3 is arranged on the frame 1, and the electric push rod 3 is provided with a box body and an extension tube. The box body is fixed on the frame 1, and the extension tube is fixedly connected with the valve plate 2 through a connecting piece.

[0022] The frame 1 is provided with a plurality of inductive position sensors 4 on one side, and the inductive position sensors 4 are connected with the electrical element module 5. The electrical element module 5 is connected with the electric push rod 3, the PLC controller 6, respectively.

[0023] In the embodiment, the electric push rod type gate valve further comprises a transformer, and the transformer is connected with the electric push rod 3, the inductive position sensor 4, the electrical element module 5, and the PLC controller 6, respectively. The transformer is used to convert the alternating current AC 380V voltage from the distribution box into direct current DC 24V for use of the electric push rod type gate valve.

[0024] Preferably, the electrical element module 5 comprises a contactor and a relay, and the contactor is connected with the relay. The electrical element module 5 is connected with the PLC controller 6 through the relay.

[0025] Preferably, the PLC controller 6 can receive position signals and / or control signals.

[0026] In the embodiment, the PLC controller 6 can receive control signals sent from an upper control room. The control signals include opening gate signals and closing gate signals.

[0027] Further, the position signals are signals generated and sent by the inductive position sensor 4 sensing the working position of the valve plate 2.

[0028] In the embodiment, the position signals include full opening position signals and full closing position signals, and the working positions include full opening positions and full closing positions.

[0029] Further, the electrical element module 5 can receive control signals sent from the PLC controller 6. When the electrical element module 5 receives the control signals, the electrical element module 5 controls the action of the electric push rod 3 according to the control signals, and drives the action of the valve plate 2 by the action of the electric push rod 3.

[0030] In the embodiment, when the PLC controller 6 receives the control signal, the PLC controller 6 internally executes a software interlocking instruction, and sends a control signal to the electrical element module 5, the control signal is transmitted to the contactor through the relay, the contactor executes a mechanical interlocking instruction, and controls the action of the electric push rod 3 according to the control signal. Wherein, the software interlocking instruction and the mechanical interlocking instruction are both used to avoid misoperation of two contactors being turned on at the same time, and prevent the asynchronous operation of the electric push rod 3 on both sides.

[0031] The working principle of the electric push rod type gate valve provided by the embodiment includes:

[0032] The upper control room sends a valve opening signal to the PLC controller 6, when the PLC controller 6 receives the valve opening signal, the PLC controller 6 sends a valve opening signal to the electrical element module 5, when the electrical element module 5 receives the valve opening signal, the valve opening signal is sent to the contactor through the relay, the contactor controls the telescopic pipe of the electric push rod 3 to retract into the box according to the valve opening signal, and drives the valve plate 2 to execute the valve opening action, that is, gradually drives the valve plate 2 to the fully open position; when the valve plate 2 is in the fully open position, the inductive position sensor 4 sends a fully open position signal and feeds back the fully open position signal to the PLC controller 6, at this time the PLC controller 6 stops sending the valve opening signal, at this time the valve is fully open;

[0033] The upper control room sends a valve opening signal to the PLC controller 6, when the PLC controller 6 receives the valve opening signal, the PLC controller 6 sends a valve opening signal to the electrical element module 5, when the electrical element module 5 receives the valve opening signal, the valve opening signal is sent to the contactor through the relay, the contactor controls the telescopic pipe of the electric push rod 3 to retract into the box according to the valve opening signal, and drives the valve plate 2 to execute the valve opening action, that is, gradually drives the valve plate 2 to the fully open position; when the valve plate 2 is in the fully open position, the inductive position sensor 4 sends a fully open position signal and feeds back the fully open position signal to the PLC controller 6, at this time the PLC controller 6 stops sending the valve opening signal, at this time the valve is fully open;

[0034] Finally, it should be noted that: the above-described embodiments, only for the specific embodiments of the present application, to illustrate the technical scheme of the present application, rather than limit it, the scope of protection of the present application is not limited to this, although the foregoing detailed description of the present application is made by referring to the prior art, those skilled in the art should understand: any familiar with the technical field of the technical person within the scope of the present application disclosed by the technology, it still can be modified or easily thought of changes to the technical solution recorded in the foregoing examples, or part of the technical features of the equivalent replacement; and these modifications, changes or replacement, and do not make the corresponding technical solutions of the essence of the present application embodiments technical scheme deviate from the spirit and scope, all should be covered in the scope of protection of the present application. Therefore, the scope of protection of the present application should be said to the scope of protection of the claims.

Claims

1. An electrically powered push rod plug valve, characterized in that The utility model relates to a kind of valve plate drive mechanism, including: Frame (1), valve plate (2), electric push rod (3), inductive position sensor (4), electrical element module (5), PLC controller (6); The frame (1) is equipped with movable guide rail, and the frame (1) is slidably connected with the valve plate (2) by the movable guide rail;The electric push rod (3) is arranged on the frame (1), and the electric push rod (3) is equipped with box and telescopic pipe, the box is fixed on the frame (1), and the telescopic pipe is fixedly connected with the valve plate (2) by connecting piece; The frame (1) is equipped with a plurality of inductive position sensors (4) on one side, and the inductive position sensor (4) is connected with the electrical element module (5);The electrical element module (5) is connected with the electric push rod (3), the PLC controller (6) respectively.

2. An electrically powered push rod gate valve according to claim 1, wherein, The electrical element module (5) includes a contactor and a relay, the contactor is connected with the relay, and the electrical element module (5) is connected with the PLC controller (6) through the relay.

3. An electrically powered push rod gate valve as defined in claim 1, wherein, The PLC controller (6) can receive position signals and / or control signals.

4. An electrically powered push rod plug valve according to claim 3, wherein The position signal is a signal generated and sent by the inductive position sensor (4) sensing the working position of the valve plate (2).

5. An electrically powered push rod gate valve as defined in claim 3, wherein, The electrical element module (5) can receive the control signal sent from the PLC controller (6);After the electrical element module (5) receives the control signal, the action of the electric push rod (3) is controlled according to the control signal, and the action of the valve plate (2) is driven by the action of the electric push rod (3).

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