Safety protection device of PLC control cabinet

Abstract

The utility model discloses a safety protection device of a PLC control cabinet, which belongs to the technical field of PLC control cabinets and is characterized in that a cover plate is fastened at a top opening of a box body of the safety protection device through screws, an air outlet pipe is fixedly sleeved on the surface of the cover plate, a one-way valve is arranged on the surface of the air outlet pipe, and a fixing sleeve is arranged in the center of the bottom of the cover plate; the safety protection device of the PLC control cabinet comprises a cover plate, a fixing sleeve, an air outlet pipe and a one-way valve, one end of the fixing sleeve is detachably connected with an electric cylinder, one end of the electric cylinder is detachably connected with a protection seat, a supporting rod and a humidity detector are arranged at the bottom of the protection seat, and one end of the supporting rod is fixedly connected with an extrusion plate. And meanwhile, external air can be prevented from entering the box body through the gap, damage caused by direct extrusion between the humidity detector and the valve body can be avoided through the arranged protection base, the arranged supporting rod and the arranged extrusion plate, and the service life of the humidity detector is greatly prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to PLC control cabinet technical field more specifically, relate to a kind of safety protection device of PLC control cabinet. BACKGROUND

[0002] PLC control cabinet refers to programmable control cabinet, control cabinet refers to complete control cabinet, can realize motor, switch control electrical cabinet, commonly used safety protection device of PLC control cabinet, the electric cylinder set due to needing to reserve gas gap, not only bring inconvenience to installation, and external air can enter device box, while humidity detector needs to be extruded with valve body when using, shorten its service life.

[0003] For example, the safety protection device of the PLC control cabinet disclosed in publication No. CN221448843U includes a gas pipe, a branch pipe, a bottom box, a compression spring, a valve body, a top box, a humidity detector, an electric cylinder, an annular gap, a first support frame, a horizontal rod, a second support frame, an inner groove, and a hook. The branch pipe is located on the gas pipe, and the end of the branch pipe is connected to the box. The bottom of the compression spring is fixed on the bottom box, and the top of the compression spring is fixed on the valve body.

[0004] As known from the above disclosure, the electric cylinder has an annular gap when installed, which not only brings inconvenience to the installation of the electric cylinder, but also allows external air to enter the box through the annular gap. Moreover, the humidity detector directly contacts and extrudes the valve body when in use, which shortens the service life of the humidity detector. SUMMARY

[0005] To solve the problems in the prior art, the safety protection device of the PLC control cabinet is provided, which includes a cover plate, a fixing sleeve, an air outlet pipe, and a one-way valve. The device not only facilitates the fixation of the electric cylinder, but also avoids the entry of external air into the box through the gap. Moreover, the device includes a protection seat, a support rod, and an extrusion plate, which can prevent the humidity detector from being damaged by direct extrusion with the valve body, greatly extending the service life of the humidity detector.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] The utility model provides a kind of safety protection device of PLC control cabinet, including safety protection device box body, the top opening of safety protection device box body is fastened with cover plate by screw, the surface of cover plate is fixedly sleeved with air outlet pipe, the surface of air outlet pipe is provided with one-way valve, the bottom center position of cover plate is equipped with fixed sleeve, one end of fixed sleeve is detachably connected with electric cylinder, one end of electric cylinder is detachably connected with protection seat, the bottom of protection seat is equipped with support rod and humidity detector, one end of support rod is fixedly connected with extrusion plate, the bottom of safety protection device box body is provided with bottom box, the side of bottom box is communicated with air inlet pipe, one end of bottom box is provided with liftable valve body, the bottom of valve body is extruded with spring, this safety protection device of PLC control cabinet, by being provided with cover plate, fixed sleeve, air outlet pipe and one-way valve, not only the fixation of electric cylinder is convenient, can also avoid that external air enters box body by gap, and by being provided with protection seat, support rod and extrusion plate, can avoid that humidity detector is directly extruded with valve body and is damaged, greatly prolongs the service life of humidity detector.

[0008] Further, the bottom of the safety protection device box body is provided with an air avoidance groove, the bottom of the air avoidance groove is provided with a threaded hole, one end of the bottom box is provided with a butt joint portion, the surface of the butt joint portion is provided with an external thread, the air avoidance groove not only facilitates the assembly of the bottom box and the air inlet pipe, but also can reduce the overall size after assembly.

[0009] Further, one end of the protection seat is provided with a screw rod, one end of the electric cylinder is provided with an internal thread hole matching the external thread of the screw rod, and the outer contour shape of the protection seat is polygonal, so that the protection seat and the screw rod facilitate disassembly and combination with one end of the electric cylinder.

[0010] Further, one end of the fixed sleeve is provided with a sleeve groove, and the side surfaces of the fixed sleeve and the electric cylinder are provided with concentric and coaxial bolt holes, and the inner wall of the bolt hole is sleeved with a bolt, so as to facilitate the assembly of the electric cylinder and the cover plate.

[0011] Further, the inside of the bottom box is provided with an air channel, and the spring is in the air channel, the bottom of the bottom box is provided with an anti-skid block, and the anti-skid block is polygonal, so as to facilitate the assembly and disassembly of the bottom box by rotating the bottom box with a wrench.

[0012] Further, the bottom of the extrusion plate is provided with a horn hole, and the horn hole and the center of the valve body are on the same axis, so that the horn hole facilitates the extrusion of the extrusion plate downward on the valve body for positioning.

[0013] Further, the top opening outside of the safety protection device box body is provided with a sealing gasket and a screw hole, to ensure the sealing of the connection.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] (1) The lid plate, the fixing sleeve, the air outlet pipe and the one-way valve are arranged, so that the electric cylinder is convenient to fix, and external air is prevented from entering the box body through the gap.

[0016] (2) The protection seat, the supporting rod and the extrusion plate are arranged, so that the humidity detector is prevented from being damaged due to extrusion of the valve body, and the service life of the humidity detector is greatly prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure perspective view of the utility model;

[0018] Figure 2 It is a lid plate structure perspective view of the utility model;

[0019] Figure 3 It is Figure 2 a protection seat and humidity detector mounting structure perspective view;

[0020] Figure 4 It is an air inlet pipe connecting structure perspective view of the utility model;

[0021] Figure 5 It is Figure 1 a safety protection device box body structure bottom view.

[0022] Mark explanation in the drawing:

[0023] 1 safety protection device box body, 11 air gap, 12 threaded hole, 2 lid plate, 21 air outlet pipe, 22 one-way valve, 23 fixing sleeve, 24 bolt, 3 electric cylinder, 4 protection seat, 41 screw rod, 42 supporting rod, 43 extrusion plate, 44 horn hole, 5 humidity detector, 6 bottom box, 61 anti-skid block, 62 butt joint part, 63 valve body, 7 air inlet pipe. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment 1

[0026] Please refer to Figures 1-5The utility model provides a kind of safety protection device of PLC control cabinet, including safety protection device box body 1, safety protection device box body 1 is also connected with first support frame, transverse rod, second support frame and hook etc.

[0027] The bottom of safety protection device box body 1 is provided with empty slot 11, the bottom of empty slot 11 is provided with screw hole 12, one end of bottom box 6 is equipped with butt joint part 62, the surface of butt joint part 62 is equipped with outer thread, empty slot 11 not only facilitates the assembly of bottom box 6 and air inlet pipe 7, but also can reduce the overall size after assembly, one end of protective seat 4 is provided with screw rod 41, one end of electric cylinder 3 is provided with inner thread hole matching with the outer thread of screw rod 41, the outer contour shape of protective seat 4 is polygon, protective seat 4 and screw rod 41 facilitate the disassembly and combination with one end of electric cylinder 3.

[0028] One end of fixed sleeve 23 is equipped with sleeve slot, the side of fixed sleeve 23 and electric cylinder 3 is equipped with concentric bolt hole, bolt hole is equipped with bolt 24 in inner wall sleeve, facilitate the assembly of electric cylinder 3 and cover plate 2, the inside of bottom box 6 is provided with air passage, and spring is in air passage, the bottom of bottom box 6 is provided with anti-skid block 61, anti-skid block 61 is polygon, facilitate the assembly and disassembly of bottom box 6 by wrench.

[0029] The safety protection device of the PLC control cabinet, when in use, the air to be detected enters the bottom box 6 through the air inlet pipe 7, and the electric cylinder 3 works to stretch out upward, so that the protection seat 4 drives the humidity detector 5 to move downward, the protection seat 4 moves downward to make the extrusion plate 43 first contact the valve body 63, the top of the valve body 63 contacts the trumpet hole 44, and then is extruded downward by the extrusion plate 43, so that the air to be detected in the bottom box 6 is discharged upward, and then is detected by the humidity detector 5, and after detection, the air is discharged from the safety protection device box body 1 through the air outlet pipe 21, the cover plate 2, the fixing sleeve 23, the air outlet pipe 21 and the one-way valve 22 are arranged, not only the electric cylinder 3 is convenient to fix, but also the external air can be prevented from entering the box body through the gap, and the protection seat 4, the supporting rod 42 and the extrusion plate 43 are arranged, so that the humidity detector 5 can be prevented from being directly extruded with the valve body 63 and damaged, and the service life of the humidity detector 5 is greatly prolonged.

[0030] The above is only a preferred embodiment of the present application; however, the protection scope of the present application is not limited to this. Any skilled person in the art, according to the technical scheme and improvement concept of the present application, can make equivalent replacement or change within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A safety protection device of a PLC control cabinet, comprising a safety protection device box body (1), characterized in that: The top opening of the safety protection device box body (1) is fastened with a cover plate (2) through screws, the surface of the cover plate (2) is fixedly sleeved with an air outlet pipe (21), the surface of the air outlet pipe (21) is provided with a one-way valve (22), the bottom center position of the cover plate (2) is provided with a fixed sleeve (23), one end of the fixed sleeve (23) is detachably connected with an electric cylinder (3), one end of the electric cylinder (3) is detachably connected with a protection seat (4), the bottom of the protection seat (4) is provided with a supporting rod (42) and a humidity detector (5), one end of the supporting rod (42) is fixedly connected with an extrusion plate (43), the bottom of the safety protection device box body (1) is provided with a bottom box (6), the side surface of the bottom box (6) is communicated with an air inlet pipe (7), one end of the bottom box (6) is provided with a liftable valve body (63), the bottom of the valve body (63) is in contact with an extrusion spring.

2. The safety protection device of the PLC control cabinet according to claim 1, characterized in that: The bottom of the safety protection device box body (1) is provided with an air avoidance groove (11), the bottom of the air avoidance groove (11) is provided with a threaded hole (12), one end of the bottom box (6) is provided with a butt joint portion (62), the surface of the butt joint portion (62) is provided with external threads.

3. The safety protection device of the PLC control cabinet according to claim 1, characterized in that: One end of the protection seat (4) is provided with a screw rod (41), one end of the electric cylinder (3) is provided with an internal thread hole matched with the external threads of the screw rod (41), and the outer contour shape of the protection seat (4) is polygonal.

4. The safety protection device of the PLC control cabinet according to claim 1, characterized in that: One end of the fixed sleeve (23) is provided with a sleeve groove, the side surfaces of the fixed sleeve (23) and the electric cylinder (3) are provided with concentric and coaxial bolt holes, and the inner wall of the bolt hole is sleeved with a bolt (24).

5. The safety protection device of a PLC control cabinet according to claim 1, characterized in that: The inside of the bottom box (6) is provided with an air channel, and the spring is in the air channel, the bottom of the bottom box (6) is provided with an anti-skid block (61), and the anti-skid block (61) is polygonal.

6. The safety protection device of a PLC control cabinet according to claim 1, characterized in that: The bottom of the extrusion plate (43) is provided with a horn hole (44), and the horn hole (44) and the center of the valve body (63) are on the same axis.

7. The safety protection device of a PLC control cabinet according to claim 1, characterized in that: The top opening of the safety protection device box body (1) is provided with a sealing gasket and a screw hole outside.

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