Tamper-proof driving device

Abstract

The utility model discloses a tamper-proof driving device which comprises a first driving shell, a lower box body, a worm penetrating through the lower box body, a hand wheel connected with the outward extending end of the worm, a turbine installed in the lower box body, a valve rod with the top end inserted into the lower box body and penetrating through the turbine, an electric switch group assembly installed in the lower box body and a controller. The hand wheel is rotated, the worm drives the turbine to rotate, the indicator rotates together under the combined action of the turbine, the valve rod and the elastic pin and points to a sign position, the turbine touches the electric switch set assembly and sends a signal, and meanwhile the visual indicator lamp is turned on and sends an alarm signal to the PLC platform. When the valve is closed, the tamper-proof driving device is detached from the valve, the tamper-proof driving device is opened to see the internal structure and rotate the hand wheel to an abnormal state, the alarm is triggered when one of the conditions occurs, the tamper-proof effect is achieved, and the functions of providing an alarm signal for a long time and confirming whether the alarm signal is really contacted or eliminated are achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve drive device technical field, concretely relates to tamper-proof drive device. BACKGROUND

[0002] At present, the valve drive device used in fire fighting system and water supply and drainage pipeline all uses signal providing type, the drive device (such as: turbine, bevel gear) on the market, drive device box has indicator or visible indicating lamp to provide auxiliary alarm.Internal signal device adopts microswitch to complete abnormal signal output through mechanical position variation, and the microswitch is composed of microswitch 1 (connected to control cabinet, and the control cabinet is connected with PLC platform or fire alarm platform) and microswitch 2 (connected auxiliary switch, indicating lamp, alarm bell etc.); When the valve drive device is installed on the pipeline, it is in the open state, and the downstream of the valve always keeps water state.When the hand wheel of the drive device rotates or the valve drive device starts from its full open position to its total stroke distance one fifth (1 / 5), the position with smaller valve opening is regulated as abnormal position.

[0003] The working principle of the normally open valve drive device is as follows: when the valve drive device is installed on the pipeline, the valve is always open, and once a fire occurs, the water in the pipeline can continuously provide water source, and no abnormal alarm signal will be generated.But when there is a misoperation or intentional closing of the valve drive device, an abnormal alarm will be generated, at this time, the hand wheel of the drive device needs to be restored to the original position, and the alarm signal will stop.But during the closing period, if a fire occurs and the valve is closed at this time and there is no water source in the pipeline, the fire extinguishing is delayed, and the best fire extinguishing time is missed, which causes unpredictable consequences;

[0004] The normally open valve drive device only provides valve switch abnormal signal to PLC platform or fire alarm platform when in use.Cannot realize the functions of continuously providing alarm signal after valve reset and remote drive device cooperative reset, and the cooperative reset function refers to that when the valve is reset, the PLC platform or fire alarm platform is reset at the same time, and then the visible indicating lamp of the valve drive device can be turned off.If the PLC platform or fire alarm platform does not have the closing signal, and the alarm of the drive device position is removed, the PLC platform or fire alarm platform still alarms;When the traditional normally open valve drive device is used, only the microswitch provides the switch signal.When the valve is closed, the signal is output to the PLC platform or fire alarm platform.But when the valve returns to the open position, the signal is immediately extinguished.No long-term alarm signal providing function, cannot confirm whether the alarm signal is truly removed or excluded, cannot be linked with the PLC platform or fire alarm platform, and leaves a safety hazard.

[0005] The existing normally open valve driving device has no anti-tampering design of long-term alarm signal, and the application provides an anti-tampering driving device. Utility model content

[0006] The utility model discloses an anti-tampering driving device, which solves the problem of the anti-tampering design of long-term alarm signal of the normally open valve driving device.

[0007] To achieve the above object, the utility model provides the following technical scheme: an anti-tampering driving device, comprising

[0008] The first driving shell comprises a lower box, a worm penetrating the lower box, a hand wheel connected with an extended end of the worm, a turbine installed in the lower box, a valve rod penetrating the turbine and inserted into the lower box, an electric switch group component and a controller installed in the lower box, the outer side of the valve rod is provided with a shaft check ring matched with the surface of the turbine, and the turbine is provided with a limiting key;

[0009] The second driving shell comprises an upper box matched with the lower box, an indicator penetrating one end of the upper box and inserted into the lower box, and a visible indicator lamp, and the indicator and the valve rod are penetrated by an elastic pin;

[0010] The reminding component comprises a pulling rod installed on the outer surface of the indicator, a fixed circular box installed on the outer surface of the upper box, a fixed column arranged in the fixed circular box, a ringing metal sheet installed on the outer surface of the fixed column, and a knocking metal spring plate, and the inner surface of the knocking metal spring plate is integrally welded with a connecting spring plate.

[0011] Preferably, the inner surface of the lower box is provided with a limiting step a, and the shaft check ring is located between the turbine and the elastic pin.

[0012] Preferably, the electric switch group component in the lower box is connected with the limiting step a, and the electric switch group component is provided with a micro switch b1, an indicator lamp b2 and a wire b3 connected with each other.

[0013] Preferably, the valve rod is provided with a key groove matched with the limiting key.

[0014] Preferably, one end of the pulling rod is inserted into the inside of the fixed circular box, and the end of the pulling rod away from the indicator is provided with a pulling round head in a cylindrical structure.

[0015] Preferably, one end of the ringing metal sheet and the knocking metal spring plate connected with the fixed column is in a curved shape, the knocking metal spring plate is in a "U" type structure, and the connecting spring plate is tangent to the pulling round head.

[0016] Preferably, the height H1 of the ringing metal sheet is equal to half of the height H2 of the knocking metal spring plate.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] In the utility model, the hand wheel is rotated, the indicator points to the position of the sign of the upper box body indicating the sign of unlocking, the worm drives the turbine to rotate, the indicator rotates together under the joint action of the turbine, the valve rod and the elastic pin and points to the sign position, when the turbine rotates to the position of the electric switch group assembly, the electric switch group assembly sends a signal, and the visible indicating lamp is lighted up at the same time, an alarm signal is sent to the PLC platform, when the valve is closed, the anti-tampering driving device is detached from the valve, the internal structure of the anti-tampering driving device is seen and the hand wheel is rotated to the abnormal state, in the above cases, one of the occurrences will trigger the alarm, the effect of preventing tampering is realized, the alarm signal is provided for a long time, and the function of confirming whether the alarm signal is truly contacted or excluded can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 It is a structure schematic view of the utility model;

[0020] Fig. 2 It is a structure schematic view of the internal structure of the lower box body of the utility model;

[0021] Fig. 3 It is a sectional structure schematic view of the fixed circular box of the utility model;

[0022] Fig. 4 It is a structure schematic view of the main view of the knocking metal elastic plate of the utility model;

[0023] In the drawing: 1, lower box body; 2, upper box body; 3, worm; 4, turbine; 5, indicator; 6, shaft check ring; 7, elastic pin; 8, visible indicating lamp; 9, limit key; 10, valve rod; 11, electric switch group assembly; 12, hand wheel; 13, controller; 14, fixed circular box; 15, fixed column; 51, push rod; 151, ringing metal sheet; 152, knocking metal elastic plate; 1521, connecting elastic plate. 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

[0026] Please refer to Figs. 1 to 4The utility model provides a technical scheme: tamper -resistant drive arrangement, including first drive casing, including lower box body 1, the worm 3 of passing through lower box body 1, the hand wheel 12 of the outer extension one end connection with the worm 3, the turbine 4 of installing in the inside of lower box body 1, the valve rod 10 of top end insertion lower box body 1 inside and passing through the turbine 4, the electric switch group subassembly 11 and controller 13 of installing in the inside of lower box body 1, electric switch group subassembly 11 and controller 13 are electrically connected with control cabinet, and control cabinet is linked with PLC platform or fire alarm platform, hand wheel 12 drives the rotation of worm 3, worm 3 drives the rotation of turbine 4 and valve rod 10, turbine 4 touches electric switch group subassembly 11, and electric switch group subassembly 11 sends out signal, can alarm, and visual pilot lamp 8 is lit simultaneously, and the alarm signal is sent to PLC platform or fire alarm platform through control cabinet, the outside of valve rod 10 is equipped with the shaft stop ring 6 of the surface coincidence with turbine 4, and the limited key 9 is equipped on turbine 4, and the limited key 9 is connected with valve rod 10 and engages, when turbine 4 rotates, can drive valve rod 10 to rotate, second drive casing, including the upper box body 2 of the coincidence with lower box body 1, the indicator 5 of one end passing through upper box body 2 and inserting inside lower box body 1 and visual pilot lamp 8, and the elastic pin 7 is passed through on the indicator 5 and valve rod 10, and the indicator 5 and valve rod 10 are fixedly connected through the elastic pin 7, can realize the position synchronization of indicator 5 and valve rod 10, alarm signal opening step, when hand wheel 12 counterclockwise rotates, worm 3 drives turbine 4 to rotate, and the indicator 5 rotates together under the joint action of turbine 4, valve rod 10, elastic pin 7, when turbine 4 rotates to the position of electric switch group subassembly 11, electric switch group subassembly 11 sends out signal, and visual pilot lamp 8 is lit simultaneously, and the alarm signal is sent to PLC platform, alarm signal closing step, when hand wheel 12 clockwise rotates, worm 3 drives turbine 4 to rotate, and the indicator 5 rotates together under the joint action of turbine 4, valve rod 10, elastic pin 7, when turbine 4 rotates and leaves the position of electric switch group subassembly 11, electric switch group subassembly 11 stops working, but visual pilot lamp 8 is not extinguished and bright, only when the alarm signal of PLC platform is closed simultaneously, the signal will stop, reminding component, including the knob lever 51 of installing on the outer surface of indicator 5, the fixed round box 14 of installing on the outer surface of upper box body 2, knob lever 51 is connected with indicator 5 through strong glue and is bonded, and fixed round box 14 is connected with upper box body 2 through screw and is screwed, the inside of this fixed round box 14 is equipped with fixed column 15, the ringing metal sheet 151 of installing on the outer surface of fixed column 15 and knock metal spring plate 152, the inner surface of knock metal spring plate 152 is equipped with integrally welded connecting spring plate 1521, when indicator 5 rotates, knob lever 51 drives connecting spring plate 1521, makes knock metal spring plate 152 and connecting spring plate 1521 deformation and generates reset spring, when the knob lever 51 of rotating with indicator 5 passes through connecting spring plate 1521, the knock metal spring plate 152 and connecting spring plate 1521 of deformation reset and knock ringing metal sheet 151, the prompt sound of ringing occurs, prompt this time to be in the closed valve state, do not mis-touch operation.

[0027] In the embodiment, a limit step a is arranged on the inner surface of the lower box body 1, the shaft stop ring 6 is located between the turbine 4 and the elastic pin 7, the indicator 5 and the valve rod 10 are fixedly connected through the elastic pin 7, and the position synchronization of the indicator 5 and the valve rod 10 can be realized.

[0028] In the embodiment, the electric switch group assembly 11 in the lower box body 1 is connected with the limit step a, the electric switch group assembly 11 is provided with the electrically connected micro switch b1, the indicator lamp b2 and the wire b3, the electric switch group assembly 11 and the visual indicator lamp 8 and the controller 13 are electrically connected with the control cabinet, and the control cabinet is electrically connected with the PLC platform.

[0029] In the embodiment, the valve rod 10 is provided with a key groove matched with the limit key 9, the valve rod 10 is limited by the limit key 9, and the valve rod 10 moves synchronously with the turbine 4.

[0030] In the embodiment, one end of the dialing rod 51 is inserted into the inside of the fixed circular box 14, the end of the dialing rod 51 away from the indicator 5 is provided with a dialing round head in a cylindrical structure, one end of the ringing metal sheet 151 and the knocking metal elastic plate 152 connected with the fixed column 15 is in a curved shape, the knocking metal elastic plate 152 is in a "U" structure, the connecting elastic plate 1521 is tangent to the dialing round head, the height H1 of the ringing metal sheet 151 is the same as half of the height H2 of the knocking metal elastic plate 152, when the indicator 5 rotates, the dialing rod 51 dials the connecting elastic plate 1521, when the dialing rod 51 rotating with the indicator 5 passes through the connecting elastic plate 1521, the deformed knocking metal elastic plate 152 and the connecting elastic plate 1521 reset and knock the ringing metal sheet 151, the ringing prompt sound is generated, and it is prompted that the valve is in a closed state at this time and the valve closing operation should not be mistakenly touched.

[0031] The working principle and the use process of the utility model are as follows:

[0032] The alarm signal opening step is that when the hand wheel 12 rotates counterclockwise, the worm 3 drives the turbine 4 to rotate, the indicator 5 rotates together under the joint action of the turbine 4, the valve rod 10 and the elastic pin 7; when the turbine 4 rotates to the position of the electric switch group assembly 11, the electric switch group assembly 11 sends a signal, and the visual indicator lamp 8 is bright, and an alarm signal is sent to the PLC platform;

[0033] The alarm signal closing step is that when the hand wheel 12 rotates clockwise, the worm 3 drives the turbine 4 to rotate, the indicator 5 rotates together under the joint action of the turbine 4, the valve rod 10 and the elastic pin 7, when the turbine 4 rotates away from the position of the electric switch group assembly 11, the electric switch group assembly 11 stops working, but the visual indicator lamp 8 is bright and not extinguished, and only when the alarm signal of the PLC platform is closed at the same time, the signal will stop;

[0034] When someone wants to forcibly remove the tamper-proof drive device from the valve, the shaft stop ring 6 is installed on the valve rod 10 above the turbine 4, and the tamper-proof drive device must be removed from the valve, the shaft stop ring 6 must be removed, and the shaft stop ring 6 must be rotated first. The hand wheel 12 is rotated to the position indicated by the indicator 5 pointing to the upper box 2 marked with the unlocking mark, and the hand wheel 12 is rotated to trigger the alarm;

[0035] When someone wants to open the tamper-proof drive device, the hand wheel 12 is also rotated, the indicator 5 points to the upper box 2 marked with the unlocking mark, and the hand wheel 12 is rotated to trigger the alarm;

[0036] When the indicator 5 rotates, the lever 51 pushes the connecting plate 1521, and when the lever 51 rotates with the indicator 5 passes through the connecting plate 1521, the deformed knocking metal plate 152 and the connecting plate 1521 are reset and knock the bell metal sheet 151, the bell ringing prompt sound is generated, prompting that the valve is in the closed state at this time, and the closed valve operation should not be mistaken;

[0037] As described above: from the valve when the valve is closed, the tamper-proof drive device is removed from the valve, the tamper-proof drive device is opened to see the internal structure, and the hand wheel 12 is rotated to an abnormal state, any of the above situations will trigger an alarm, achieve the effect of preventing tampering, and have a long-term alarm signal function. Whether the alarm signal is truly contacted or excluded can be confirmed.

[0038] Although the embodiments of the utility model have been shown and described (see the above detailed description), it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A tamper-resistant drive apparatus, characterized by: The utility model relates to a kind of automatic reminding device for water heater, including First drive shell, including lower box (1), worm (3) passing through lower box (1), hand wheel (12) connected with the outer end of worm (3) extension, turbine (4) installed in the inside of lower box (1), valve stem (10) is inserted into the inside of lower box (1) and passes through turbine (4), electric switch group component (11) and controller (13) installed in the inside of lower box (1), the outside of valve stem (10) is equipped with the shaft stop ring (6) consistent with the surface of turbine (4), the turbine (4) is equipped with limit key (9); Second drive shell, including upper box (2) consistent with lower box (1), indicator (5) and visible indicating lamp (8) one end passing through upper box (2) and inserting into the inside of lower box (1), the elastic pin (7) is passed through on indicator (5) and valve stem (10); Prompting component, including the pull lever (51) installed on the outer surface of indicator (5), the fixed round box (14) installed on the outer surface of upper box (2), the inside of fixed round box (14) is equipped with fixed column (15), the ringing metal sheet (151) and knock metal spring plate (152) installed on the outer surface of fixed column (15), the inner surface of knock metal spring plate (152) is equipped with integral welding connection spring plate (1521).

2. The tamper-resistant drive of claim 1, wherein: The inner surface of lower box (1) is equipped with limit step a, and the shaft stop ring (6) is located between the turbine (4) and the elastic pin (7).

3. The tamper-resistant drive of claim 2, wherein: The electric switch group component (11) in the lower box (1) is connected with the limit step a, and the electric switch group component (11) is provided with the electrically connected micro switch b1, the indicator light b2 and the wire b3.

4. The tamper-resistant drive of claim 1, wherein: The valve stem (10) is provided with a key groove matched with the limit key (9).

5. The tamper-resistant drive of claim 1, wherein: The pull lever (51) is inserted into the inside of the fixed round box (14) at one end, and the pull lever (51) is provided with a pull round head of cylindrical structure at the end away from the indicator (5).

6. The tamper-resistant drive of claim 5, wherein: The ringing metal sheet (151) and the knock metal spring plate (152) are connected with the fixed column (15) at one end in a curved shape, the knock metal spring plate (152) is in a "U" type structure, and the connection spring plate (1521) is tangent to the pull round head.

7. The tamper-resistant drive of claim 1, wherein: The height H1 of the ringing metal sheet (151) is the same as half the size of the height H2 of the knock metal spring plate (152).

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