Non-explosion-proof acousto-optic alarm liquid level switch

Abstract

The utility model discloses a non-explosion-proof acousto-optic alarm liquid level switch, which relates to the technical field of liquid level switches, and comprises a shell, two fixing plates are arranged at the top in the shell, a pulley is arranged between the two fixing plates, a rope is arranged on the pulley, a floating body is arranged at one end of the rope, and the other end of the floating body is provided with an alarm. The floating body penetrates through the bottom of the shell and is arranged outside the shell, a pressing block is arranged at the other end of the rope, a warping plate is arranged above the pressing block, a side table is arranged below the pressing block, and a pressure switch and an alarm are arranged on the side table. A power device used for bouncing the warping plate is arranged below the side, close to the floating body, of the warping plate, and a magnetic switch is further arranged at the outer bottom of the shell. According to the non-explosion-proof acousto-optic alarm liquid level switch provided by the utility model, the floating body is prevented from being influenced by wind, and the measurement accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level switch technical field especially relates to a non -explosion sound -light alarm liquid level switch. BACKGROUND

[0002] Non -explosion sound -light liquid level switch mainly through the sensor detects liquid level change. When liquid level reaches the set detection point, the sensor will trigger the corresponding signal, thereby controlling the sound -light alarm device to send sound -light signal to remind the operator liquid level state. It has been widely applied in shipbuilding, papermaking, printing, generator equipment, petrochemical industry, food industry, water treatment, electrician, dye industry, oil pressure machinery and so on.

[0003] In the prior art, the commonly used float ball type liquid level switch, because the float ball of the float ball type liquid level switch is light in texture, is easily affected by the wind, causes inaccurate liquid level measurement.

[0004] Therefore, a non -explosion sound -light alarm liquid level switch is proposed to eliminate the influence of wind on the liquid level switch. UTILITY MODEL CONTENTS

[0005] In view of the problem that the float ball of the float ball type liquid level switch is light in texture, is easily affected by the wind, causes inaccurate liquid level measurement, the utility model is proposed.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a non -explosion sound -light alarm liquid level switch, it includes the casing, the top of the casing is provided with two fixed plates, two fixed plates are provided with the pulley, the pulley is provided with the rope, one end of the rope is provided with the float, the float passes through the bottom of the casing and is arranged outside the casing, the other end of the rope is provided with the pressing block, the pressing block is provided with the flap above, the pressing block is provided with the side platform below, the side platform is provided with the pressure switch and the alarm, the flap is provided with the power unit below the side close to the float, the bottom of the casing is further provided with the magnetic switch.

[0007] Preferably, the fixed shaft is arranged below the pulley.

[0008] Preferably, the side close to the float of the casing is provided with the support plate, and the support plate is arranged below the flap.

[0009] Preferably, the power unit comprises a magnetic conductor, a limiting plate and a striker, the limiting plate is arranged above the magnetic conductor, and the striker is arranged above the limiting plate.

[0010] Preferably, the upper part of the striker protrudes from the top of the power unit, and the lower part of the striker is arranged in the power unit.

[0011] The utility model discloses the beneficial effect of:

[0012] Liquid level rises, and the float rises with it, when the float hits the magnetic switch, the magnetic conductor in the power device generates upward magnetic force and makes the striker pop up, the striker hits the flap, the flap rotates around the fixed shaft, the pressure block on the rope is pressed by the flap and presses the pressure switch, then the alarm starts; Because the power source of the alarm is the pressure block, and the power source of the pressure block is the power device, as long as the float does not hit the magnetic switch, the alarm will not work, and because the pressure block and the float are connected on the same rope, they also play the role of mutual restraint; The non sound and light alarm liquid level switch avoids the influence of wind and improves the measurement accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be briefly introduced the drawing needed to be used in the embodiment description, obviously, the drawing in the following description is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings. Wherein:

[0014] Fig. 1 It is the structural schematic diagram of the utility model.

[0015] Fig. 2 It is the structural schematic diagram of the utility model.

[0016] Fig. 3 It is the structural schematic diagram of the utility model.

[0017] Mark explanation:

[0018] 1, shell;2, float;3, fixed plate;4, pulley;5, rope;6, pressure block;7, flap;8, fixed shaft;9, support plate;10, side table;11, pressure switch;12, alarm;13, power device;14, magnetic conductor;15, limit plate;16, striker;17, magnetic switch. DETAILED DESCRIPTION

[0019] In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, the following detailed description of the specific implementation of the utility model is combined with the drawing of the specification.

[0020] Refer to Figs. 1 to 3For an embodiment of the utility model, provide a kind of non-explosion-proof sound-light alarm liquid level switch, this non-explosion-proof sound-light alarm liquid level switch includes shell 1, two fixed plates 3 are provided in the top of shell 1, pulley 4 is provided between the two fixed plates 3, rope 5 is provided on pulley 4, one end of rope 5 is provided with float 2, float 2 is set to the outside of shell 1 by passing through the bottom of shell 1, the other end of rope 5 is provided with pressure block 6, pressure block 6 is provided with warped plate 7 above, pressure block 6 is provided with side table 10 below, pressure switch 11 and alarm 12 are provided on side table 10, warped plate 7 is provided with power unit 13 below one side near float 2, magnetic switch 17 is further provided on the bottom of shell 1.

[0021] Specifically, the top of the shell 1 is provided with two fixed plates 3, a connecting shaft is provided between the two fixed plates 3, a pulley 4 is provided on the connecting shaft, a rope 5 is connected to the pulley 4, one end of the rope 5 is a pressure block 6, and the other end is provided with a float 2. The float 2 is set to the outside of the shell 1 by passing through the bottom of the shell 1. The mass of the float 2 is heavier than that of the pressure block 6, so the pressure block 6 is hung below the warped plate 7. Specifically, a magnetic switch 17 is provided on the bottom of the shell 1. The position of the magnetic switch 17 allows the float 2 to impact and press.

[0022] Specifically, a fixed shaft 8 is provided below the pulley 4, and a warped plate 7 is provided on the fixed shaft 8. Preferably, the fixed shaft 8 is provided at the center of the warped plate 7 or near one side of the pressure block 6. Due to the weight and the upward force of the pressure block 6, the warped plate 7 will tilt towards the float 2.

[0023] Further, a support plate 9 is provided below the warped plate 7 on one side of the float 2 to support the warped plate 7 and prevent it from being continuously warped by the pressure block 6, improving the stability of the warped plate 7 and limiting the upward movement of the pressure block 6 to prevent it from rising continuously and separating from the pulley 4.

[0024] Specifically, a side table 10 is provided below the pressure block 6, and a pressure switch 11 and an alarm 12 are provided on the side table 10. The height of the side table 10 allows the pressure switch 11 to be pressed and the circuit to be closed when the warped plate 7 presses the pressure block 6, enabling the alarm 12 to be activated. The alarm 12 can be provided on the top of the side table 10 or on the side wall of the shell 1 without affecting the pressing of the pressure switch 11 by the pressure block 6. Further, the alarm 12 has sound and light alarm functions, i.e., it can emit light and sound.

[0025] Specifically, a power device 13 is arranged on one side of the support plate 9, the power device 13 comprises a magnetic conductor 14, a limiting plate 15 and a striker 16, the limiting plate 15 is arranged above the magnetic conductor 14, the striker 16 is arranged above the limiting plate 15, the magnetic conductor 14 can change the direction of the magnetic field, the striker 16 has magnetic conductivity, the limiting plate 15 only has the limiting and supporting effect on the striker 16 and does not affect the magnetic force and the direction of the magnetic field, the cross section of the striker 16 is in the shape of a "mountain" character, the upper part of the striker 16 extends out of the power device 13 and is arranged below the rocker plate 7 and beside the support plate 9, and the lower part of the striker 16 is clamped in the power device 13, so that the striker 16 cannot be separated from the power device 13 when moving upward.

[0026] It can be understood that, in the normal state, the striker 16 is located on the limiting plate 15, the top of the striker 16 does not contact the rocker plate 7, the pressing block 6 does not press the pressure switch 11, when the float 2 hits and presses the magnetic force switch 17, the direction of the magnetic field of the magnetic conductor 14 in the power device 13 changes to upward, the striker 16 is bounced up, the striker 16 gives the rocker plate 7 an upward force, the rocker plate 7 rotates, the pressing block 6 falls down to press the pressure switch 11, and the alarm 12 works.

[0027] Working principle: in the normal state, the float 2 does not hit the magnetic force switch 17, the striker 16 does not hit the rocker plate 7, one end of the rocker plate 7 is located on the support plate 9, the other end abuts against the pressing block 6, the pressure switch 11 is not closed, and the alarm 12 does not work; when the liquid level rises and the float 2 hits and presses the magnetic force switch 17, the direction of the magnetic field of the magnetic conductor 14 in the power device 13 changes to upward, the striker 16 is bounced up, the striker 16 hits the rocker plate 7, the rocker plate 7 rotates around the fixed shaft 8, the pressing block 6 falls down to press the pressure switch 11, and the alarm 12 works; when the liquid level falls and the float 2 releases the magnetic force switch 17, the direction of the magnetic field of the magnetic conductor 14 in the power device 13 changes to downward, the rocker plate 7 resets, the pressing block 6 rises up, the pressure switch 11 is released, and the alarm 12 stops working.

[0028] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A non-anti-knock sound-light alarm liquid level switch comprising a housing (1), characterized in that: The shell (1) is provided with two fixed plates (3) on the top, two sliding pulleys (4) are arranged between the two fixed plates (3), a rope (5) is arranged on the sliding pulley (4), one end of the rope (5) is provided with a float (2), the float (2) passes through the bottom of the shell (1) and is arranged outside the shell (1), the other end of the rope (5) is provided with a pressing block (6), a rocker plate (7) is arranged above the pressing block (6), a side table (10) is arranged below the pressing block (6), a pressure switch (11) and an alarm (12) are arranged on the side table (10), a power device (13) for bouncing the rocker plate (7) is arranged below the side of the rocker plate (7) close to the float (2), and a magnetic switch (17) is further arranged on the bottom of the shell (1).

2. A non-explosion-proof acousto-optic alarm liquid level switch according to claim 1, characterized in that: The shell (1) is provided with a fixed shaft (8), the fixed shaft (8) is arranged below the sliding pulley (4), and the rocker plate (7) is rotatably arranged on the fixed shaft (8).

3. A non-explosion-proof photoacoustic alarm liquid level switch according to claim 2, characterized in that: The shell (1) is provided with a support plate (9) close to the side of the float (2), and the support plate (9) is arranged below the rocker plate (7).

4. A non-explosion-proof photoacoustic alarm liquid level switch according to claim 3, characterized in that: The power device (13) comprises a magnetic conductor (14), a limiting plate (15) and a striker (16), the limiting plate (15) is arranged above the magnetic conductor (14), and the striker (16) is arranged above the limiting plate (15).

5. A non-anti-knock sound and light alarm liquid level switch according to claim 4, characterized in that: The upper part of the striker (16) protrudes from the top of the power device (13), and the lower part of the striker (16) is arranged in the power device (13).

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