CN213274287U - Explosion-proof sensing device and explosion-proof water flow indicator - Google Patents
Explosion-proof sensing device and explosion-proof water flow indicator Download PDFInfo
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- CN213274287U CN213274287U CN202022455669.3U CN202022455669U CN213274287U CN 213274287 U CN213274287 U CN 213274287U CN 202022455669 U CN202022455669 U CN 202022455669U CN 213274287 U CN213274287 U CN 213274287U
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Abstract
An explosion-proof sensing device comprises an explosion-proof shell, a touch rod and a microswitch, wherein a first cavity, a second cavity and a partition wall are arranged in the explosion-proof shell, a slide rod hole is formed in the partition wall, and the touch rod can move along the axial direction of the slide rod hole; the part of the touch rod in the second chamber is provided with a bearing plate; the part of the touch rod in the first cavity is provided with a touch part, the micro switch is arranged in the first cavity, and when the touch rod moves, the touch part on the touch rod can touch the micro switch. An explosion-proof water flow indicator comprises the explosion-proof sensing device. The utility model discloses a divide cavity structure to trigger micro-gap switch through the structure that power shifted, realized explosion-proof. And the double-channel signal feedback of the double micro switches is realized, and the reliability of signal triggering is high. The pressing force of the touch piece for triggering the micro switch is increased to a certain degree and then cannot be increased, so that the micro switch can be prevented from being damaged under the condition of large flow.
Description
Technical Field
The utility model belongs to the technical field of the water flow indicator and specifically relates to an explosion-proof sensing device and explosion-proof water flow indicator are related to.
Background
The water flow indicator is generally installed on a branch pipe of a fire extinguishing system for detecting and feeding back a water flow signal and an action position, and generally comprises a saddle type, a flange type, a groove type, a thread type and the like. The action principle is that when fluid flows, thrust is generated to drive an action part to act, the action part triggers a micro switch through the transfer of the force, and the micro switch is closed to output an electric signal. Although the existing water flow indicator can meet the monitoring function, the existing water flow indicator does not have an explosion-proof measure and cannot be used in places with explosion-proof requirements; the water flow indicator on the current market directly presses the micro switch through the elastic element to indicate water flow, and the micro switch is easy to damage under large flow.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned not enough, provide an explosion-proof sensing device and explosion-proof water flow indicator.
In order to achieve the above object, the technical solution of the present invention is: an explosion-proof sensing device is characterized by comprising an explosion-proof shell, a touch rod and a microswitch, wherein a first cavity, a second cavity and a partition wall are arranged in the explosion-proof shell, the partition wall separates the first cavity from the second cavity, a slide rod hole for communicating the first cavity with the second cavity is arranged on the partition wall, the touch rod penetrates through the slide rod hole and extends into the first cavity and the second cavity, the touch rod is tightly matched with the slide rod hole, and the touch rod can move along the axial direction of the slide rod hole; the lower part of the explosion-proof shell is provided with a connecting end for connecting a water flow indicator, the connecting end is provided with a through hole for an action part of the water flow indicator to extend into, the through hole is communicated with the second cavity, and the part of the touch rod in the second cavity is provided with a bearing plate; the part of the touch rod in the first cavity is provided with a touch part, the micro switch is arranged in the first cavity, and when the touch rod moves, the touch part on the touch rod can touch the micro switch.
The first chamber and the second chamber are separated by the partition wall, and only one sliding rod hole tightly matched with the touch rod is reserved, so that the explosion-proof distance is ensured, and the transmission of explosion is blocked. The action part of the water flow indicator is pushed by the fluid medium and acts, the action part acts on the bearing plate to move the touch rod, and when the touch piece on the touch rod presses the micro switch, the micro switch can be touched.
Preferably, the number of the micro switches is two, the two micro switches are arranged in the first cavity, and the two micro switches are arranged on two sides of the touch rod respectively. The touch piece can trigger two micro-gap switches simultaneously when moving along with the touch rod, realizes double-circuit accurate signal feedback in limited space, has higher reliability.
Preferably, the touch piece touches the micro switch through a side surface, the side surface of the touch piece comprises a first touch surface and a second touch surface, the first touch surface is a conical surface or an inclined surface, and the second touch surface is a cylindrical surface or a straight surface. When the touch rod moves, the touch piece presses the micro switch through the first touch surface to realize touch, the pressing force of the touch piece on the micro switch is gradually increased, and when the touch rod continues to move, the touch piece presses the micro switch through the second touch surface, and the pressing force of the touch piece on the micro switch is kept unchanged. When the water flow indicator indicates a large-flow medium, the pressing force of the touch piece on the micro switch is not increased after the pressing force is increased to a certain degree, so that the micro switch can be prevented from being damaged.
Preferably, the part of the touch rod in the first chamber is sleeved with a spring, and two ends of the spring respectively abut against the touch part and the inner wall of the first chamber. The spring is used for resetting the touch piece, and when the medium stops flowing, the spring pushes the touch piece to move and reset, so that the micro switch is disconnected and the signal is output.
Preferably, the touch piece is provided with a nut, and the nut is in threaded fit with the touch rod. The nut is rotated to adjust the position of the touch piece on the touch rod, and the starting contact of the microswitch can be adjusted steplessly.
Preferably, the second cavity is provided with a second opening at the connecting end, the connecting end is provided with a pressing plate for covering the second opening at the second opening, and the pressing plate is provided with a first bolt for locking the explosion-proof shell and a second bolt for locking the water flow sensor. The first bolt of clamp plate accessible pins explosion-proof shell, pins rivers sensor through the second bolt for explosion-proof sensing device can install on various types of rivers indicators, can be used to the transformation to current rivers sensor moreover.
Preferably, the explosion-proof device further comprises a signal wire, the first chamber is provided with a first opening at the upper part of the explosion-proof shell, and the upper part of the first explosion-proof shell is provided with a cover for covering the first opening; the outer wall of the explosion-proof shell is provided with a wire hole which is communicated with the first cavity, and the wire hole of the explosion-proof shell is provided with a stuffing box; and a wiring terminal is arranged in the first chamber, a signal wire sequentially penetrates through the stuffing box and the wire hole to be connected with the wiring terminal, and the wiring terminal is electrically connected with the microswitch. The signal line is used for transmitting a trigger signal of the microswitch.
The utility model provides an explosion-proof water flow indicator, includes explosion-proof sensing device, still includes the rivers sensor, the top of rivers sensor is located to explosion-proof sensor, the rivers sensor includes casing and action part, the action part includes blade, swing span and axostylus axostyle, the upper portion and the swing span of blade are connected, the rotatable setting of swing span is in the casing, the lower extreme and the swing span of axostylus axostyle are connected, the upper end of axostylus axostyle stretches out and stretches into in explosion-proof sensing device's the second cavity from the top of casing, the swing axostylus axost.
Preferably, the upper part of the housing is provided with a rubber block for sealing, and the shaft passes through the rubber block. The rubber block can seal the shaft and the upper part of the shell, and the medium fluid is reduced from entering the second chamber.
Preferably, the lower portion of the shaft or the swing frame is of a resilient material. The blade can deflect at a large angle when the medium fluid has large flow.
Through adopting foretell technical scheme, the beneficial effects of the utility model are that: the utility model discloses a divide cavity structure to trigger micro-gap switch through the structure that power shifted, realized explosion-proof. And the double-channel signal feedback of the double micro switches is realized, and the reliability of signal triggering is high. The pressing force of the touch piece for triggering the micro switch is increased to a certain degree and then cannot be increased, so that the micro switch can be prevented from being damaged under the condition of large flow.
Drawings
FIG. 1 is a schematic structural diagram of an explosion-proof sensing device;
FIG. 2 is a schematic structural view of the first chamber of the explosion-proof sensing device;
FIG. 3 is a schematic structural view of the touch lever engaged with the micro switch;
FIG. 4 is a schematic view of the explosion-proof flow indicator when installed on a pipeline;
fig. 5 is a schematic structural view of the explosion-proof water flow indicator.
Description of the main reference numerals:
an explosion-proof sensing device 1; an explosion-proof case 11; a first chamber 111; a second chamber 112; wire holes 113; a dividing wall 114; a slide rod hole 115; a touch lever 12; a carrier plate 121; a trip member 13; the first contact surface 131; a second contact surface 132; a nut 133; a spring 14; a cover 15; a platen 16; a through hole 161; a microswitch 17; a connection terminal 181; a stuffing box 182; a signal line 19; a water flow indicator 2; a housing 21; a blade 22; a swing frame 23; a shaft 24; a rubber block 25; a conduit 3.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Example 1:
as shown in fig. 1-3, the explosion-proof sensing device of the present invention comprises an explosion-proof shell 11, a touch rod 12 and two micro switches 17. A first chamber 111, a second chamber 112 and a partition wall 114 are provided in the explosion-proof case 11. The first chamber 111 is above the second chamber 112, and the partition wall 114 partitions the first chamber 111 and the second chamber 112 between the first chamber 111 and the second chamber 112. The partition wall 114 is provided with a slide rod hole 115 communicating the first chamber 111 and the second chamber 112, and the touch rod 12 passes through the slide rod hole 115 and extends into the first chamber 111 and the second chamber 112. The touch rod 12 is tightly matched with the slide rod hole 115 to form a seal. The trip lever 12 is movable in the axial direction of the trip lever hole 115, and the trip lever hole 115 is arranged laterally.
The lower part of the explosion-proof shell 11 is provided with a connecting end for connecting the water flow indicator, the connecting end is provided with a through hole 161 for the action part of the water flow indicator to extend into, the through hole 161 is communicated with the second chamber 112, the part of the touch rod 12 in the second chamber 112 is provided with a bearing plate 121, and the bearing plate 121 can be pushed when the action part of the water flow indicator acts.
The part of the touch rod 12 in the first chamber 111 is provided with a touch part 13, the two micro switches 17 are both arranged in the first chamber 111, the two micro switches 17 are respectively arranged at two sides of the touch rod 12, and when the touch rod 12 moves, the touch part 13 on the touch rod 12 can simultaneously touch the two micro switches 17.
As shown in fig. 1 and 3, the contact member 13 contacts the micro switch 17 through a side surface, the side surface of the contact member 17 includes a first contact surface 131 and a second contact surface 132, the first contact surface 131 is a conical surface, and the second contact surface 132 is a cylindrical surface. The part of the touch bar 12 in the first chamber 111 is sleeved with a spring 14, and two ends of the spring 14 respectively abut against the touch piece 13 and the inner wall of the first chamber 111. When the touch piece 13 moves along with the touch rod 12 to press the microswitch 17 for touch, the spring 14 is compressed, and when the touch rod 12 is released, the spring 14 is extended to push the touch piece 13 away from the microswitch 17. When the touch rod 12 moves in one direction, the first touch surface 131 of the touch member 13 first presses the micro switch, and when the touch rod 12 continues to move, the second touch surface 132 presses the micro switch 17, so that the touch member 13 and the micro switch are in contact with each other first and then flat, and the pressing force does not become too large. The touch piece 13 is provided with a nut 133, the nut 133 is in threaded fit with the touch rod 12, and the position of the touch piece 13 on the touch rod 12 can be adjusted by rotating the nut 133.
As shown in fig. 1, the second chamber 112 is provided with a second opening at the connecting end position, the connecting end is provided with a pressing plate 16 at the second opening position for covering the second opening, and the pressing plate 16 is provided with a first bolt for locking the explosion-proof housing 11 and a second bolt for locking the water flow sensor.
As shown in fig. 2, the explosion-proof sensing device 1 further comprises a signal line 19, the first chamber 111 is provided with a first opening at the upper part of the explosion-proof housing 11, and the upper part of the first explosion-proof housing 11 is provided with a cover 15 for covering the first opening; a wire hole 113 is formed in the outer wall of the explosion-proof shell 11, the wire hole 113 is communicated with the first chamber 111, and a stuffing box 182 is arranged at the wire hole 111 of the explosion-proof shell 11; a connecting terminal 181 is arranged in the first chamber 111, the signal wire 19 sequentially passes through the stuffing box 182 and the wire hole 113 to be connected with the connecting terminal 181, and the connecting terminal 181 is electrically connected with the microswitch 17.
When the action part of the water flow sensor acts, the bearing plate 121 can be pushed transversely, so that the touch rod 12 moves transversely, and the touch piece 13 on the touch rod 12 presses two micro switches 17 to trigger signals simultaneously.
Example 2:
as shown in fig. 4 and 5, the explosion-proof water flow indicator comprises an explosion-proof sensing device 1 and a water flow sensor 2, wherein the explosion-proof sensor 1 is arranged above the water flow sensor 2.
As shown in fig. 1-3, the explosion-proof sensing device comprises an explosion-proof housing 11, a touch rod 12 and two microswitches 17. The explosion-proof shell 11 is provided with a first chamber 111 and a second chamber 112 which are separated from each other, and the first chamber 111 is arranged above the second chamber 112. The lower part of the explosion-proof shell 11 is provided with a connecting end for connecting the water flow indicator, the connecting end is provided with a through hole 161 for the action part of the water flow indicator to extend into, and the through hole 161 is communicated with the second chamber 112. The touch rod 12 can be transversely and movably arranged in the explosion-proof shell 11, the touch rod 12 extends into the first chamber 111 and the second chamber 112, and the part of the touch rod 12 in the second chamber 112 is provided with a bearing plate 121. The operation part of the water flow indicator extends into the second chamber 112 from the through hole 161 to the side of the receiving plate 121, and pushes the receiving plate 121 to move the touch lever 12 when the operation part of the water flow indicator operates. The part of the touch rod 12 in the first chamber 111 is provided with a touch part 14, two micro switches 17 are both arranged in the first chamber 111, and the two micro switches 17 are respectively arranged at two sides of the touch rod 12. When the touch rod 12 moves, the touch piece 13 on the touch rod 12 can touch the micro switch 17.
As shown in fig. 5, the water flow sensor 2 includes a housing 21 and an actuating member, the housing 21 is used for being fixed on the pipeline 3, the actuating member includes a blade 22, a swing frame 23 and a shaft 24, the blade 22 is used for extending into the pipeline 3, the upper portion of the blade 22 is connected with the swing frame 23, and the swing frame 23 is rotatably disposed in the housing 21. The lower end of the shaft 24 is connected to the swing frame 23, the upper end of the shaft 24 extends from the top of the housing 21 and extends into the second chamber 112 from the through hole 161 of the explosion-proof sensor device to the side of the receiving plate 121, and the swing shaft 24 can push the receiving plate 121. The upper part of the housing 21 is provided with a rubber block 25 for sealing, and the shaft 24 passes through the rubber block 25. The swing frame may be an elastomeric material.
When the fluid in the pipeline 3 flows, the blade 22 is pushed, the blade 22 swings around the rotating shaft of the swing frame 23, the shaft lever 24 swings in the opposite direction, when the shaft lever 24 swings, the bearing plate 121 in the second chamber 112 is pushed to move, the touch rod 12 moves transversely, the touch piece 13 in the first chamber 111 moves along with the touch rod 12, and the microswitch 17 is touched.
The above-mentioned, only for the preferred embodiment of the present invention, can not limit the scope of the implementation of the present invention, all the equivalent changes and decorations made according to the claims of the present invention should still belong to the scope covered by the present invention.
Claims (10)
1. An explosion-proof sensing device is characterized by comprising an explosion-proof shell, a touch rod and a microswitch, wherein a first cavity, a second cavity and a partition wall are arranged in the explosion-proof shell, the partition wall separates the first cavity from the second cavity, a slide rod hole for communicating the first cavity with the second cavity is arranged on the partition wall, the touch rod penetrates through the slide rod hole and extends into the first cavity and the second cavity, the touch rod is tightly matched with the slide rod hole, and the touch rod can move along the axial direction of the slide rod hole; the lower part of the explosion-proof shell is provided with a connecting end for connecting a water flow indicator, the connecting end is provided with a through hole for an action part of the water flow indicator to extend into, the through hole is communicated with the second cavity, and the part of the touch rod in the second cavity is provided with a bearing plate; the part of the touch rod in the first cavity is provided with a touch part, the micro switch is arranged in the first cavity, and when the touch rod moves, the touch part on the touch rod can touch the micro switch.
2. An explosion-proof sensing device according to claim 1 wherein there are two microswitches, both of which are located in the first chamber, and both of which are located on either side of the trip lever.
3. An explosion proof sensor assembly according to claim 1 wherein the trip member trips the microswitch by way of a side surface, the side surface of the trip member including a first trip surface which is conical or inclined and a second trip surface which is cylindrical or flat.
4. The explosion-proof sensing device of claim 1 wherein the portion of the trip lever within the first chamber is sleeved with a spring, and the two ends of the spring respectively abut against the trip member and the inner wall of the first chamber.
5. An explosion-proof sensing device as claimed in claim 1 wherein the trip member is provided with a nut which is in threaded engagement with the trip member.
6. An explosion-proof sensor assembly according to claim 1 wherein the second chamber has a second opening at the connecting end, the connecting end having a pressure plate at the second opening for covering the second opening, the pressure plate having a first bolt for locking the explosion-proof housing and a second bolt for locking the water flow sensor.
7. An explosion-proof sensing device according to claim 1, further comprising a signal line, the first chamber having a first opening at an upper portion of the explosion-proof housing, the first explosion-proof housing having a cover at an upper portion thereof for covering the first opening; the outer wall of the explosion-proof shell is provided with a wire hole which is communicated with the first cavity, and the wire hole of the explosion-proof shell is provided with a stuffing box; and a wiring terminal is arranged in the first chamber, a signal wire sequentially penetrates through the stuffing box and the wire hole to be connected with the wiring terminal, and the wiring terminal is electrically connected with the microswitch.
8. An explosion-proof water flow indicator, which is characterized by comprising the explosion-proof sensing device as claimed in any one of claims 1 to 7, and further comprising a water flow sensor, wherein the explosion-proof sensor is arranged above the water flow sensor, the water flow sensor comprises a shell and an action part, the action part comprises a blade, a swing frame and a shaft lever, the upper part of the blade is connected with the swing frame, the swing frame is rotatably arranged in the shell, the lower end of the shaft lever is connected with the swing frame, the upper end of the shaft lever extends out of the top of the shell and into a second cavity of the explosion-proof sensing device, and the swing shaft lever can push a bearing plate.
9. An explosion proof water flow indicator as claimed in claim 8 wherein the upper part of the housing is provided with a rubber block for sealing, the shaft passing through the block.
10. An explosion proof water flow indicator as claimed in claim 8 wherein the lower portion of the shaft or the swing frame is of a resilient material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022455669.3U CN213274287U (en) | 2020-10-29 | 2020-10-29 | Explosion-proof sensing device and explosion-proof water flow indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022455669.3U CN213274287U (en) | 2020-10-29 | 2020-10-29 | Explosion-proof sensing device and explosion-proof water flow indicator |
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| Publication Number | Publication Date |
|---|---|
| CN213274287U true CN213274287U (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022455669.3U Active CN213274287U (en) | 2020-10-29 | 2020-10-29 | Explosion-proof sensing device and explosion-proof water flow indicator |
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|---|---|
| CN (1) | CN213274287U (en) |
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- 2020-10-29 CN CN202022455669.3U patent/CN213274287U/en active Active
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