Anti-theft gate valve

Abstract

The utility model relates to an anti-theft gate valve which comprises a valve body, a gate plate installed in the valve body, a valve cover installed on the valve body, a valve rod installed on the top of the gate plate, a support installed on the top of the valve body, a valve rod nut installed on the support through a blocking sleeve, a valve rod upper end screwed in the valve rod nut through threads, and a hand wheel fixed outside the valve rod nut. A photoelectric emitter is arranged on one side wall of the inner cavity, located above the gate plate, of the valve body, a photoelectric receiver is arranged on the opposite side wall, an avoiding hole is formed in the lower end of the outer wall of the valve rod, a control box is installed on the outer top of the valve body, a controller and a storage battery are arranged in the control box, and an alarm is installed on the top of the control box. The photoelectric emitter, the photoelectric receiver and the alarm are all connected with the controller through wires, a switch button connected with the alarm is arranged on the controller, the controller is connected with the storage battery, and a switch door is arranged on the side wall of the control box. When the valve is started, an alarm can be given out, and the behavior that non-staff steal the valve is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline valves, in particular to an anti-theft gate valve. Background Art

[0002] The gate valve is an important pipeline valve. The gate valve's opening and closing parts are gate plates. The gate plate's movement direction is perpendicular to the fluid direction. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled. The gate valve has low flow resistance; it is more labor-saving when opening and closing; it is high and takes a long time to open and close; it is not easy to produce water hammer; the medium can flow in any direction on both sides, and it is easy to install; it has a simple shape, short structure length, good manufacturing processability, and a wide range of applications. However, the gate valve is more labor-saving when opening and closing, so there may be criminals who will open the valve to steal raw materials, causing great losses to the country. Utility Model Content

[0003] The utility model aims to solve the deficiencies of the prior art and provides an anti-theft gate valve.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0005] An anti-theft gate valve comprises a valve body, a gate plate is installed in the valve body, a valve cover is installed on the valve body, a valve stem is installed on the top of the gate plate, the valve stem passes through the valve cover, a bracket is installed on the top of the valve body, a mounting groove is provided in the middle position of the top of the bracket, a valve stem nut is installed in the mounting groove, an anti-slip ring is provided at the bottom of the valve stem nut, a blocking sleeve is provided on the anti-slip ring in the mounting groove, a fixing ring is provided on the top of the blocking sleeve, the fixing ring is fixed on the top of the bracket, an external thread is provided on the upper end of the valve stem and is screwed into the valve stem nut through the external thread, and a hand is fixed on the upper end of the outer wall of the valve stem nut Wheel, a photoelectric transmitter is provided on one side wall of the inner cavity of the valve body above the gate plate, and a photoelectric receiver is provided on the opposite side wall, an avoidance hole is provided at the lower end of the outer wall of the valve stem, a control box is installed on the top outside the valve body, a controller and a battery are arranged in the control box, an alarm is installed on the top of the control box, the photoelectric transmitter, the photoelectric receiver and the alarm are all connected to the controller through wires, a switch button connected to the alarm is provided on the controller, the controller is connected to the battery, a switch door is provided on the side wall of the control box, and the switch door is locked to the control box by a switch lock.

[0006] The beneficial effect of the utility model is that the utility model can sound an alarm when the valve is started through the coordinated action of the photoelectric generator, the photoelectric receiver, the alarm and the controller, thereby preventing theft by non-staff members. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure of the utility model;

[0008] In the figure: 1-valve body; 2-gate; 3-valve cover; 4-valve stem; 5-bracket; 6-valve stem nut; 7-handwheel; 8-photoelectric transmitter; 9-photoelectric receiver; 10-avoidance hole; 11-control box; 12-controller; 13-alarm; 14-switch button; 15-battery; 16-switch door; 17-switch lock; 18-switch handle; 19-valve seat; 20-anti-slip ring; 21-blocking sleeve; 22-fixing ring;

[0009] The following is a detailed description of the embodiments of the present invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0010] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.

[0011] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] A theft-proof gate valve, such as Figure 1 As shown, it includes a valve body 1, a gate 2, a valve cover 3, a valve stem 4, a bracket 5, a valve stem nut 6, a handwheel 7, a photoelectric transmitter 8, a photoelectric receiver 9, an avoidance hole 10, a control box 11, a controller 12, an alarm 13, a switch button 14, a battery 15, a switch door 16, a switch lock 17, a switch handle 18 and a valve seat 19.

[0015] A gate plate 2 is installed in the valve body 1, a valve cover 3 is installed on the valve body 1, a valve stem 4 is installed on the top of the gate plate 2, the valve stem 4 passes through the valve cover 3, a mounting groove is provided in the middle position of the top of the bracket 5, and a valve stem nut 6 is installed in the mounting groove, an anti-slip ring 20 is provided at the bottom of the valve stem nut 6, a blocking sleeve 21 is provided on the anti-slip ring 20 in the mounting groove, a fixing ring 22 is provided on the top of the blocking sleeve 21, and the fixing ring 22 is fixed to the top of the bracket 5, an external thread is provided on the upper end of the valve stem 4 and is screwed into the valve stem nut 6 through the external thread, a handwheel 7 is fixed to the upper end of the outer wall of the valve stem nut 6, valve seats 19 are installed on both sides of the gate plate 2 in the valve body 1, and the bracket 5 is installed on the top of the valve body 1 by bolts.

[0016] Turn the handwheel 7. Since the handwheel 7 is fixedly connected to the valve stem nut 6, the valve stem nut 6 can be driven to rotate. The valve stem nut 6 is blocked by the blocking sleeve 21 and cannot move up and down but can only rotate. Since the valve stem nut 6 and the valve stem 4 are threadedly connected, the rotation of the valve stem nut 6 will drive the valve stem 4 to move up and down, and the up and down movement of the valve stem 4 drives the opening and closing of the gate 2.

[0017] In order to avoid the loss caused by some individuals opening the gate valve at will, the utility model designs anti-theft measures, which are specifically:

[0018] A photoelectric transmitter 8 is provided on one side wall of the inner cavity of the valve body 1 above the gate plate 2, and a photoelectric receiver 9 is provided on the opposite side wall. A avoidance hole 10 is provided at the lower end of the outer wall of the valve stem 4. A control box 11 is installed on the top outside the valve body 1. A controller 12 and a battery 15 are provided in the control box 11. An alarm 13 is installed on the top of the control box 12. The photoelectric transmitter 8, the photoelectric receiver 9 and the alarm 13 are all connected to the controller 12 through wires. A switch button 14 connected to the alarm 13 is provided on the controller 12. The controller 12 is connected to the battery 15. A switch door 16 is provided on the side wall of the control box 11. The switch door 16 is locked to the control box 11 through a switch lock 17. A switch handle 18 is provided on the outside of the switch door 16.

[0019] If someone operates the hand wheel 7 to rotate the valve stem 4, during the process of the valve stem 4 rising, the avoidance hole 10 turns to the position of the photoelectric transmitter 8 and the photoelectric receiver 9, and the signal emitted by the photoelectric transmitter 8 is received by the photoelectric receiver 9 and transmitted to the controller 12. The controller 12 controls the alarm 13 to sound an alarm, which will remind the staff to check and avoid theft. Only when the staff operates, can they open the switch door 16 and turn off the switch button 14, and the alarm 13 will stop.

[0020] The avoidance hole 10 is a semicircular hole.

[0021] The photoelectric transmitter 8, the photoelectric receiver 9 and the controller 12 can be purchased products as long as they meet the use requirements.

[0022] For example, the photoelectric transmitter 8 and the photoelectric receiver 9 may be photoelectric transmitters and receivers of model OPF340A OPTEK.

[0023] The controller 12 may be a Siemens Smart200, S7-300, S7-1200, S7-1500, etc.

[0024] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the utility model, or are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. An anti-theft gate valve, comprising a valve body (1), a gate plate (2) installed in the valve body (1), a valve cover (3) installed on the valve body (1), a valve stem (4) installed on the top of the gate plate (2), the valve stem (4) passing through the valve cover (3), a bracket (5) installed on the top of the valve body (1), a mounting groove is provided at the middle position of the top of the bracket (5) and a valve stem nut (6) is installed in the mounting groove, an anti-slip ring (20) is provided at the bottom of the valve stem nut (6), a blocking sleeve (21) is provided on the anti-slip ring (20) in the mounting groove, a fixing ring (22) is provided on the top of the blocking sleeve (21), and the fixing ring (22) is fixed to the top of the bracket (5), an external thread is provided on the upper end of the valve stem (4) and is screwed into the valve stem nut (6) through the external thread, and a hand wheel (7) is fixed on the upper end of the outer wall of the valve stem nut (6), characterized in that: A photoelectric transmitter (8) is provided on one side wall of the inner cavity of the valve body (1) located above the gate plate (2), and a photoelectric receiver (9) is provided on the opposite side wall. A relief hole (10) is provided at the lower end of the outer wall of the valve stem (4). A control box (11) is installed on the top of the valve body (1). A controller (12) and a storage battery (15) are provided in the control box (11). An alarm (13) is installed on the top of the control box (11). The photoelectric transmitter (8), the photoelectric receiver (9) and the alarm (13) are all connected to the controller (12) through wires. A switch button (14) connected to the alarm (13) is provided on the controller (12). The controller (12) is connected to the storage battery (15). A switch door (16) is provided on the side wall of the control box (11). The switch door (16) is locked with the control box (11) through a switch lock (17).

2. The anti-theft gate valve according to claim 1, characterized in that: A switch handle (18) is arranged on the outside of the switch door (16).

3. The anti-theft gate valve according to claim 2, characterized in that: Valve seats (19) are installed on both sides of the gate plate (2) in the valve body (1).

4. The anti-theft gate valve according to claim 3, characterized in that: The bracket (5) is mounted on the top of the valve body (1) by means of bolts.

5. The anti-theft gate valve according to claim 4, characterized in that: The avoidance hole (10) is a semicircular hole.

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