Push rod control device

Abstract

A push rod control device is characterized in that a pull rope displacement sensor is additionally arranged on a push rod, any opening degree control can be carried out on a solid material discharging valve, and therefore the discharging amount of solid materials can be easily achieved so as to meet the metallurgical process requirement, the push rod control device comprises the push rod located in a push rod sleeve shell, and one end of the push rod is a push rod connector; one end of the push rod sleeve shell is connected with a push rod connector, the other end of the push rod sleeve shell is connected with a push rod motor through a transmission device, and the push rod motor is connected with a push rod controller. The pull rope displacement sensor is connected with the valve positioning module, and the valve positioning module is connected with the push rod controller.

Description

Technical Field

[0001] The utility model relates to the technical field of push rods, in particular to a push rod control device, and the push rod is an electric push rod or an electro-hydraulic push rod. Background Art

[0002] An electric push rod and an electro-hydraulic push rod are power-driven devices that convert the rotational motion of a motor into the linear reciprocating motion of a push rod, and can be used as actuating machinery in various simple or complex technological processes in industry to achieve remote control, centralized control or automatic control. Electric push rods and electro-hydraulic push rods can be used for the control of solid material feeding valves in the metallurgical industry. Generally, the control methods of electric push rods and electro-hydraulic push rods are open, close and stop, and the valves are opened or closed according to process requirements. However, when the process requirements are relatively special, for example, when it is necessary to open the valve to a specified opening degree through the push rod to control the feeding amount of materials, it is very difficult for the push rod control in the prior art to control to the required opening degree, resulting in its inability to meet the process requirements. Summary of the Utility Model

[0003] Aiming at the defects or deficiencies existing in the prior art, the utility model provides a push rod control device. By installing a rope displacement sensor on the push rod, it can perform arbitrary opening degree control on the solid material feeding valve, thereby facilitating the realization of the solid material feeding amount to meet the requirements of the metallurgical process.

[0004] The technical solution of the utility model is as follows:

[0005] A push rod control device includes a push rod located in a push rod housing. One end of the push rod is a push rod connector, and the other end is connected to a push rod motor through a transmission device. The push rod motor is connected to a push rod controller. The feature is that a rope displacement sensor is arranged on the push rod housing. The rope of the rope displacement sensor is connected to the push rod connector through a rope connector. The push rod connector is used to connect the solid material feeding valve. The rope displacement sensor is connected to a valve positioning module, and the valve positioning module is connected to the push rod controller.

[0006] The push rod is an electric push rod.

[0007] The push rod is an electro-hydraulic push rod.

[0008] The push rod controller is connected to a field control box.

[0009] The valve positioning module is connected to a programmable logic controller PLC or a distributed control system DCS.

[0010] The technical effects of the present utility model are as follows: A push rod control device of the present utility model is equipped with a displacement sensor on an ordinary electric push rod (the function of the cable displacement sensor is to convert mechanical motion into an electrical signal that can be measured, recorded, or transmitted), so as to realize that the push rod linearly displays a specific feedback stroke or valve opening of 0-100%, and cooperate with the valve position controller to realize precise control of the stroke or opening of the electric push rod and electro-hydraulic push rod.

[0011] The present utility model has the following characteristics compared with the prior art:

[0012] 1. The materials used are simple and extensive, not easily damaged, and the maintenance is simple and easy.

[0013] 2. The central control centralized control is convenient and precise.

[0014] 3. It can participate in process automatic adjustment control. Description of the Drawings

[0015] Figure 1 It is a schematic structural diagram of a push rod control device for implementing the present utility model.

[0016] The description of the reference numerals in the drawings is as follows: 1 - on-site control box; 2 - push rod controller; 3 - push rod motor; 4 - push rod; 5 - push rod connector (used to connect the solid material feeding valve and the cable connector); 6 - cable connector; 7 - cable; 8 - cable displacement sensor (the function of the cable displacement sensor is to convert mechanical motion into an electrical signal that can be measured, recorded, or transmitted); 9 - valve position module; 10 - programmable logic controller PLC (Programmable Logic Controller) or distributed control system DCS (Distributed Control System); 11 - push rod housing; 12 - transmission device. Specific Embodiments

[0017] The following describes the present utility model in conjunction with the embodiments and the drawings ( Figure 1 ).

[0018] Figure 1 It is a schematic structural diagram of a push rod control device for implementing the present utility model. Refer to Figure 1As shown in the figure, a push rod control device includes a push rod 4 located in a push rod housing 11. One end of the push rod 4 is a push rod connector 5, and the other end is connected to a push rod motor 3 through a transmission device 12. The push rod motor 3 is connected to a push rod controller 2. A cable displacement sensor 8 is provided on the push rod housing 11. The cable 7 of the cable displacement sensor 8 is connected to the push rod connector 5 through a cable connector 6. The push rod connector 5 is used to connect a solid material feeding valve. The cable displacement sensor 8 is connected to a valve positioning module 9, and the valve positioning module 9 is connected to the push rod controller 2.

[0019] The push rod 4 is an electric push rod. The push rod is an electro-hydraulic push rod. The push rod controller 2 is connected to a field control box 1. The valve positioning module 9 is connected to a programmable logic controller PLC 10 or a distributed control system DCS 10.

[0020] In the utility model, a displacement sensor is added to an ordinary electric push rod to realize that the push rod linearly shows a specific feedback stroke or valve opening degree of 0-100%. Cooperating with an intelligent valve positioning controller can realize precise control of the stroke or opening degree of the electric push rod and the electro-hydraulic push rod.

[0021] The utility model discloses an application of a control device for an electric push rod and an electro-hydraulic push rod. The solution is to fix a cable displacement sensor on the original electric push rod and electro-hydraulic push rod, and add an intelligent valve positioning controller (module) to the original push rod controller. The signal of the cable displacement sensor is connected to the valve positioning module, and the stroke of the push rod or the valve position feedback (0-100%) can be displayed on the valve positioning module. The 4-20mA input and output signals of the remote PLC or DCS are connected to the valve positioning module, and the control output of the valve positioning module is connected to the switch control line of the original push rod controller. The operator inputs a stroke value of 0-100% on the computer screen according to the process requirements, the PLC or DCS outputs a 4-20mA signal to the valve positioning module. After receiving the signal, the valve positioning module compares it with the signal transmitted by the on-site push rod cable displacement sensor and outputs an open or closed control signal to make the push rod motor rotate forward or backward until it stops when it is consistent with the signal value input by the PLC, thereby realizing precise control of the push rod.

[0022] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. It is hereby indicated that the above description helps those skilled in the art to understand the present invention, but does not limit the protection scope of the present invention. Any implementation that makes equivalent substitutions, modifications and improvements, and / or simplifies the above description without departing from the essential content of the present invention falls within the protection scope of the present invention.

Claims

1. A push rod control device, comprising a push rod in a push rod housing, one end of the push rod being a push rod connector, and the other end being connected to a push rod motor through a transmission device, wherein the push rod motor is connected to a push rod controller, characterized in that: A pull-rod displacement sensor is provided on the push rod housing, the pull rope of the pull-rod displacement sensor is connected to the push rod connector through a pull-rod connector, the push rod connector is used to connect a solid material discharge valve, the pull-rod displacement sensor is connected to a valve positioning module, and the valve positioning module is connected to the push rod controller.

2. The push rod control device according to claim 1, characterized in that: The push rod is an electric push rod.

3. The push rod control device according to claim 1, characterized in that: The push rod is an electro-hydraulic push rod.

4. The push rod control device according to claim 1, characterized in that: The push rod controller is connected to the on-site control box.

5. The push rod control device according to claim 1, characterized in that: The valve positioning module is connected to a programmable logic controller PLC or a distributed control system DCS.

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