CN210575723U - Mining explosion-proof flow switch - Google Patents
Mining explosion-proof flow switch Download PDFInfo
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- CN210575723U CN210575723U CN201921383113.9U CN201921383113U CN210575723U CN 210575723 U CN210575723 U CN 210575723U CN 201921383113 U CN201921383113 U CN 201921383113U CN 210575723 U CN210575723 U CN 210575723U
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- upper cover
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Abstract
The utility model discloses a mining flame-proof type flow switch, include: the explosion-proof device comprises an upper cover, a compression nut, a check ring, a blocking plate, a swinging assembly, an explosion-proof shell, a terminal disc, a terminal and a plastic cylinder; the upper end of the explosion-proof shell is provided with an upper groove; the lower end of the explosion-proof shell is provided with a lower groove; a terminal is arranged at the bottom end in the upper groove; a terminal plate is sleeved on the terminal; plastic cylinders are respectively arranged on two sides of the bottom end of the terminal plate; a swing component is arranged in the lower groove; an upper cover is arranged at the upper end of the explosion-proof shell, and the bottom end edge of the upper cover is inserted into the upper groove; an external grounding screw is arranged on the side surface of the upper cover; a groove body is formed in the upper cover; arranging a blocking plate in the groove body; the upper end of the blocking plate is provided with a check ring; and a compression nut is arranged at the upper end of the upper cover. The utility model overcomes prior art's is not enough, reasonable in design, compact structure, it is convenient quick to install, because the mode of the removable division of flame proof casing and upper cover is connected, the effectual inconvenient problem of installation of having solved.
Description
Technical Field
The utility model belongs to the technical field of flow switch technique and specifically relates to a mining flame proof type flow switch is related to.
Background
In the prior art, the flow switch mainly adopts a magnetic control dry reed pipe type, a target type and other flow switches. The magnetic control reed pipe type flow switch pushes the floater and the permanent magnet block to move upwards through water flow, and the reed pipe acts through magnetic force to achieve the purpose of detecting water flow signals. However, the permanent magnet is easy to rust, so that the floater is blocked; the reed contact of the reed switch is easy to be stuck, and the service life is short; when the water flow fluctuates up and down near the designed action flow, the reed contact of the reed switch is frequently combined and combined to generate a pulse wave group, and the switching characteristic of the flow switch is poor. For the target type flow switch, the target paddle is pushed to move through water flow, so that the micro switch acts, and the aim of detecting water flow signals is fulfilled. But the flow resistance of the target paddle is large, and the pressure drop of the flow switch is large; the sensitivity is low, and the starting flow is large; the contact of the microswitch is easy to be stuck and the service life is short. In other types of flow switches, a hall element is also used as a detection element, but since the hall element has high sensitivity, when the flow rate fluctuates around the design operation flow rate, the hall element appears a pulse wave group instead of a stable level, and the switching characteristics of the flow switch are affected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a mining flame-proof type flow switch.
To achieve the above object, the present invention adopts the following:
a mining flame-proof type flow switch comprises: the explosion-proof device comprises an upper cover, a compression nut, a check ring, a blocking plate, a swinging assembly, an explosion-proof shell, a terminal disc, a terminal and a plastic cylinder; the upper end of the explosion-proof shell is provided with an upper groove; the lower end of the explosion-proof shell is provided with a lower groove; a terminal is arranged at the bottom end inside the upper groove; a terminal plate is sleeved on the terminal; plastic cylinders are respectively arranged on two sides of the bottom end of the terminal disc, and the bottom ends of the plastic cylinders are in contact with the explosion-proof shell; the terminal disc and the explosion-proof shell are fixed through a countersunk head screw and an internal grounding screw, and the countersunk head screw and the internal grounding screw respectively penetrate through the two plastic cylinders; a swinging assembly is arranged in the lower groove, and the bottom end of the swinging assembly penetrates through the lower groove; an upper cover is arranged at the upper end of the flameproof shell, and the bottom end edge of the upper cover is inserted into the upper groove; an external grounding screw is arranged on the side surface of the upper cover; a groove body is formed in the upper cover; a blocking plate is arranged in the groove body, and the blocking plate and the upper cover are sealed through a sealing ring; a check ring is arranged at the upper end of the blocking plate; and a compression nut is arranged at the upper end of the upper cover, and the check ring is compressed through the compression nut.
Preferably, the upper cover and the flameproof shell are fixed through a positioning screw and sealed through a rubber ring.
Preferably, a cylindrical pin is provided on the swing assembly.
The utility model has the advantages of it is following:
the utility model overcomes the defects of the prior art, has reasonable design, compact structure and convenient and fast installation, and effectively solves the problem of inconvenient installation by the way that the flameproof shell and the upper cover can be split; meanwhile, the power line is externally connected through the internal grounding screw and the external grounding screw, the length of a lead wire is not limited, the anti-explosion device is suitable for remote control and operation, and has a strong anti-explosion effect.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is the utility model relates to a mining flame-proof type flow switch's schematic structure diagram.
In the figures, the various reference numbers are:
1-an upper cover, 2-an external grounding screw, 3-a rubber ring, 4-a compression nut, 5-a retainer ring, 6-a blocking plate, 7-a sealing ring, 8-a countersunk screw, 9-a swinging component, 10-an explosion-proof shell, 11-a terminal disc, 12-a terminal, 13-a cylindrical pin, 14-a positioning screw, 15-a plastic cylinder, 16-an internal grounding screw, 17-an upper groove and 18-a lower groove.
Detailed Description
In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
As shown in fig. 1, a mining explosion-proof flow switch includes: the explosion-proof device comprises an upper cover 1, a compression nut 4, a retainer ring 5, a blocking plate 6, a swinging assembly 9, an explosion-proof shell 10, a terminal disc 11, a terminal 12 and a plastic cylinder 15; the upper end of the flameproof shell 10 is provided with an upper groove 17; the lower end of the explosion-proof shell 10 is provided with a lower groove 18; a terminal 12 is arranged at the inner bottom end of the upper groove 17; a terminal plate 11 is sleeved on the terminal 12; plastic cylinders 15 are respectively arranged on two sides of the bottom end of the terminal plate 11, and the bottom ends of the plastic cylinders 15 are in contact with the explosion-proof shell 10; the terminal disc 11 and the flameproof shell 10 are fixed through a countersunk head screw 8 and an internal grounding screw 16, and the countersunk head screw 8 and the internal grounding screw 16 respectively penetrate through the two plastic cylinders 15; the swing assembly 9 is arranged inside the lower groove 18, and the bottom end of the swing assembly 9 penetrates through the lower groove 18; an upper cover 1 is arranged at the upper end of the flameproof shell 10, and the bottom end edge of the upper cover 1 is inserted into the upper groove 17; an outer grounding screw 2 is arranged on the side surface of the upper cover 1; a groove body is arranged in the upper cover 1; a blocking plate 6 is arranged in the groove body, and the blocking plate 6 and the upper cover 1 are sealed through a sealing ring 7; a retainer ring 5 is arranged at the upper end of the blocking plate 6; a compression nut 4 is arranged at the upper end of the upper cover 1, and a retainer ring 5 is compressed through the compression nut 4.
Further, the upper cover 1 and the flameproof housing 10 are fixed through a positioning screw 14 and sealed through a rubber ring 3.
Further, the heads of the countersunk head screw 8, the internal grounding screw 16 and the external grounding screw 2 are all cross-shaped grooves.
Further, a cylindrical pin 13 is provided on the swing assembly 9.
Further, the rubber ring 3 is made of an oil-resistant rubber material; the sealing ring 7 is made of nitrile rubber material.
Further, the terminal 12 and the plastic cylinder 15 are both made of ABS plastic; the terminal tray 11 is made of an epoxy insulating plate.
The device effectively solves the problem of inconvenient installation by the way that the flameproof shell 10 and the upper cover 1 can be disassembled; meanwhile, the power line is externally connected through the internal grounding screw 16 and the external grounding screw 2, the length of a lead wire is not limited, the anti-explosion device is suitable for remote control and operation, has a strong anti-explosion effect, and simultaneously increases the safety.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (6)
1. A mining flame-proof type flow switch is characterized by comprising: the explosion-proof device comprises an upper cover, a compression nut, a check ring, a blocking plate, a swinging assembly, an explosion-proof shell, a terminal disc, a terminal and a plastic cylinder; the upper end of the explosion-proof shell is provided with an upper groove; the lower end of the explosion-proof shell is provided with a lower groove; a terminal is arranged at the bottom end inside the upper groove; a terminal plate is sleeved on the terminal; plastic cylinders are respectively arranged on two sides of the bottom end of the terminal disc, and the bottom ends of the plastic cylinders are in contact with the explosion-proof shell; the terminal disc and the explosion-proof shell are fixed through a countersunk head screw and an internal grounding screw, and the countersunk head screw and the internal grounding screw respectively penetrate through the two plastic cylinders; a swinging assembly is arranged in the lower groove, and the bottom end of the swinging assembly penetrates through the lower groove; an upper cover is arranged at the upper end of the flameproof shell, and the bottom end edge of the upper cover is inserted into the upper groove; an external grounding screw is arranged on the side surface of the upper cover; a groove body is formed in the upper cover; a blocking plate is arranged in the groove body, and the blocking plate and the upper cover are sealed through a sealing ring; a check ring is arranged at the upper end of the blocking plate; and a compression nut is arranged at the upper end of the upper cover, and the check ring is compressed through the compression nut.
2. The mining flameproof flow switch according to claim 1, wherein the upper cover and the flameproof housing are fixed by a set screw and sealed by a rubber ring.
3. The mining flameproof flow switch of claim 1, wherein the countersunk head screw, the internal grounding screw and the external grounding screw are all cross grooves.
4. The mining flameproof flow switch of claim 1, wherein the swinging component is provided with a cylindrical pin.
5. The mining flameproof flow switch of claim 2, wherein the rubber ring is made of an oil-resistant rubber material; the sealing ring is made of a nitrile rubber material.
6. The mining flameproof flow switch of claim 1, wherein the terminal and the plastic cylinder are both made of ABS plastic; the terminal tray is made of an epoxy insulating plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383113.9U CN210575723U (en) | 2019-08-23 | 2019-08-23 | Mining explosion-proof flow switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921383113.9U CN210575723U (en) | 2019-08-23 | 2019-08-23 | Mining explosion-proof flow switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210575723U true CN210575723U (en) | 2020-05-19 |
Family
ID=70645584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921383113.9U Active CN210575723U (en) | 2019-08-23 | 2019-08-23 | Mining explosion-proof flow switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210575723U (en) |
-
2019
- 2019-08-23 CN CN201921383113.9U patent/CN210575723U/en active Active
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