CN214956493U - Safety isolation type pressure switch - Google Patents

Abstract

The utility model discloses a safety isolation formula pressure switch belongs to pressure switch technical field, has solved pressure switch in the fail safe nature problem of electrical aspect, and its technical scheme main points are including switch base, core subassembly, electronic switch device and protecting crust, be equipped with platform, core groove and installation pipe on the switch base, the assembly of core subassembly is at the core inslot, is provided with cantilever crane and binding post on the platform, the cantilever crane includes bottom plate portion, riser portion and folded plate portion, and on the bottom plate was fixed in the platform, the outside at folded plate portion was fixed to the electronic switch device made electronic switch device bottom unsettled and be located the core subassembly top, reached suspension type isolation, improved work fail safe nature effect.

Description

Safety isolation type pressure switch

Technical Field

The utility model relates to a pressure switch field especially relates to a safety isolation formula pressure switch.

Background

The pressure switch on the valve can detect the pressure of the water pipe, when the pressure of the water pipe is too high, the valve core in the pressure switch can be pushed, so that the electronic switch device is triggered, and if other external control circuits of the electronic switch device exist, the power-off protection or safe power-off function can be realized. General pressure switch mainly comprises valve body, case, electronic switch device and binding post, and electronic switch device sets up and mounting structure is close to the case, therefore the case can touch electronic switch device, and electronic switch device still can connect binding post and have the power consumption or accuse electric condition, and current electronic switch device takes place the electric leakage condition easily in structural design and installation for it is not reliable enough in the safe handling.

An electronic pressure switch, publication (bulletin) No. CN2893901Y, is available on the market, and belongs to the technical field of mechanical and electrical integration. The electronic pressure switch comprises a shell and a control circuit, wherein a sealing ring is arranged in the shell, the shell is divided into two cavities which are not communicated with a movable cavity and a water inlet cavity by the sealing ring, a movable pressing plate is fixedly connected to the side part of the sealing ring, the movable pressing plate is arranged in the movable cavity, a spring is also arranged in the movable cavity, two ends of the spring respectively act on the movable pressing plate and the shell, and the control circuit consists of a power supply, a starting sensor, a stopping sensor, a central processing unit and a manual switch; signals received by the starting sensor and the stopping sensor are input into the central processing unit, and whether power is supplied to the water pump motor or not is determined after the signals are processed by the central processing unit; the movable pressing plate is fixedly connected with a pressure baffle; the pressure baffle is arranged in the movable cavity and is positioned at the starting sensor and the stopping sensor and used for changing signals received by the two sensors.

The product induction mode is easy to have electromagnetic interference, and the place with larger influence of the electromagnetic interference on the use environment is not suitable.

Based on the above technical environment, the existing pressure switch structure needs to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art's weak point, solve the technical problem in the correlation technique to a certain extent at least, provide a safety isolation formula pressure switch to reach the purpose that improves operational reliability and security.

In order to solve the technical problem, the technical scheme of the utility model is that: the utility model provides a safety isolation formula pressure switch, includes switch base, core subassembly, electronic switch device and protecting crust, be equipped with platform, core groove and installation pipe on the switch base, the assembly of core subassembly is provided with cantilever crane and binding post in the core inslot on the platform, the cantilever crane includes bottom plate portion, riser portion and folded plate portion, and on the bottom plate was fixed in the platform, electronic switch device fixed outside at folded plate portion made electronic switch device bottom unsettled and be located the core subassembly top.

As a specific aspect of the present invention, it may be preferable that: the bottom of the electronic switch device is provided with a contact, the side face of the electronic switch device is provided with a plurality of assembly holes, the assembly holes are fixed through bolts and folded plate portions, and the assembly holes are fixed through bolts and vertical plate portions.

As a specific aspect of the present invention, it may be preferable that: the top of the electronic switch device is provided with a conductive contact piece, the conductive contact piece is connected to the wiring terminal through the lead frame, and the opening direction of the wiring terminal deviates from the orientation of the conductive contact piece.

As a specific aspect of the present invention, it may be preferable that: the platform is circular, and the protecting crust is the cylindricality and covers on the platform, still is provided with scarce groove on the protecting crust, lacks the groove and installs the screw that is used for fixed protecting crust, and the lateral wall of protecting crust is provided with the internal thread interface, and stifled sealed lid that is equipped with is gone up to the internal thread interface.

As a specific aspect of the present invention, it may be preferable that: the core subassembly includes activity dabber, spring and spacing top cap, and the lower extreme lateral wall of activity dabber and installation pipe inner wall seal assembly and relative up-down activity, and spacing top cap is fixed on the core groove and is supplied the upper end of activity dabber to stretch out the spacing of realizing the upward movement, and the spring is contradicted and is used for restoring to the throne the lower limit position of activity dabber at the downside of spacing top cap and the lower extreme of activity dabber, the middle section position cover of activity dabber is equipped with the sealing washer.

The utility model discloses technical effect mainly embodies in following aspect: 1. the suspended mounting structure of the electronic switching device ensures that the electronic switching device is more reliable under the condition of electrifying work, and increases the isolation area and the isolation distance; 2. the cantilever frame has firm and stable structure, the electronic switch device is reliably installed by utilizing the structure, the vibration amplitude of the suspension type installation of the electronic switch device is reduced, and the electronic switch device is not easy to shake or fall off at the suspension position due to the structural design of the cantilever frame; 3. and the protective shell is utilized for physical protection and isolation, so that the safety is improved.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a sectional view of the structure of the embodiment;

FIG. 3 is a schematic view illustrating a disassembled state of the structure from a viewing angle in the embodiment;

fig. 4 is a schematic view of another structure in another view angle in the embodiment in a disassembled state.

Reference numerals: 1. a switch base; 11. a platform; 12. a core slot; 13. installing a pipe; 2. a core assembly; 21. a movable mandrel; 22. a spring; 23. a limiting top cover; 24. a seal ring; 3. an electronic switching device; 31. a contact; 32. an assembly hole; 33. a conductive contact; 34. a bolt; 35. a wire; 4. a protective shell; 41. notching; 42. a screw; 43. a sealing cover; 44. an internal threaded interface; 5. a cantilever mount; 51. a bottom plate portion; 52. a vertical plate portion; 53. a flap portion; 6. and a terminal.

Detailed Description

The embodiments of the present invention will be described in detail below, examples of which are illustrated in the accompanying drawings, and the embodiments described below by referring to the drawings are exemplary and intended to explain the present invention so that the technical solutions of the present invention can be more easily understood and grasped, and cannot be construed as limiting the present invention.

Example (b):

a safety isolating pressure switch, as shown with reference to fig. 1 and 2, includes a switch base 1, a core assembly 2, an electronic switching device 3, and a protective case 4. The switch base 1 is made of metal materials, and the protective shell 4 is made of insulating plastics. The electronic switching device 3 is an electronic component such as a contact 31 switch or a limit switch. The switch base 1 is provided with a platform 11, a core groove 12 and a mounting pipe 13. The platform 11 is circular, and the protective housing 4 is the cylindricality and covers on platform 11, still is provided with scarce groove 41 on the protective housing 4, lacks the groove 41 and installs the screw 42 that is used for fixed protective housing 4, and the lateral wall of protective housing 4 is provided with internal thread interface 44, and the stifled sealed lid 43 that is equipped with on the internal thread interface 44. The design of the slot 41 can enable the screw 42 to be fixed on the platform 11 from the vertical direction, and the design has the advantages that the screw 42 is kept in the vertical direction during the mounting and dismounting process, and is labor-saving and convenient to operate.

The mounting tube 13 is externally threaded and is adapted for connection to fit over a pipeline.

Referring to fig. 3 and 4, the core design of the scheme is as follows: the core assembly 2 is fitted in the core groove 12, the stage 11 is provided with a cantilever 5 and a terminal block 6, and the cantilever 5 includes a bottom plate 51, a vertical plate 52, and a flap 53. The bottom plate is fixed to the platform 11, and the electronic switching device 3 is fixed to the outer side of the flap portion 53 such that the electronic switching device 3 is suspended at the bottom and above the core assembly 2.

During operation, the wiring terminal 6 can be connected with external equipment such as a power supply, two wires 35 are connected to the wiring terminal 6 and are respectively a positive wire and a negative wire, the two wires 35 are considered for safety, the whole device structure is fully utilized, and the purposes of improving the distance and the safety and reliability are achieved. The simple suspension system for the electronic switching device 3 is likely to fall off and shake if it is simply suspended. Therefore, the suspension bracket is bent in design and fixed by a plurality of bolts 34.

The further design structure is as follows: the bottom of the electronic switching device 3 is provided with the contacts 31, the side of the electronic switching device 3 is provided with a plurality of fitting holes 32, the fitting holes 32 are fixed by bolts 34 and the flap portions 53, and the fitting holes 32 are also fixed by the bolts 34 and the riser portions 52. Therefore, the bolt 34 can better fix the electronic switch device 3, avoid shaking and maintain the contact and connection reliability of the lead 35.

The top of electronic switching device 3 sets up conductive contact 33, and conductive contact connects to binding post 6 through wire 35 frame, and binding post 6's opening direction and conductive contact 33's orientation deviate from mutually. The design makes the contact piece exposed in the air safer and more reliable. In addition, the position of the conductive contact piece 33 in fig. 4 effectively improves safety.

On the other hand, referring to fig. 2, the core assembly 2 includes a movable core shaft 21, a spring 22, and a stopper cap 23. The lower end side wall of the movable core shaft 21 and the inner wall of the mounting pipe 13 are assembled in a sealing mode and move up and down relatively, the limiting top cover 23 is fixed on the core groove 12 and is used for limiting the upper end portion of the movable core shaft 21 to extend out to achieve upward movement, the spring 22 abuts against the lower side of the limiting top cover 23 and the lower end of the movable core shaft 21 and is used for resetting the lower limit position of the movable core shaft 21, and the sealing ring 24 is sleeved at the middle section position of the movable core shaft 21. The sealing ring 24 plays a role in buffering, and the stability of the upper limit movement of the movable mandrel 21 is effectively improved.

The working process is as follows: when the installation pipe 13 is connected in the water pipe position, too big then can promote movable mandrel 21 upward movement and compression spring 22 of water pressure, the extreme position of movable mandrel 21 upward movement is that sealing washer 24 contradicts as spacing top cap 23, and the upper end of movable mandrel 21 is higher and is contradicted electronic switch device 3 this moment, is connecting positive pole line and negative pole line on electronic switch device 3 to can realize the on-off control of circuit on binding post 6.

Of course, the above is only a typical example of the present invention, and besides, the present invention can also have other various specific embodiments, and all technical solutions adopting equivalent replacement or equivalent transformation are all within the scope of the present invention as claimed.

Claims (5)

1. The utility model provides a safe isolated pressure switch, includes switch base (1), core subassembly (2), electronic switch device (3) and protecting crust (4), characterized by, be equipped with platform (11), core groove (12) and installation pipe (13) on switch base (1), core subassembly (2) assembly is in core groove (12), is provided with cantilever crane (5) and binding post (6) on platform (11), cantilever crane (5) are including bottom plate (51), riser portion (52) and folded plate portion (53), and on the bottom plate was fixed in platform (11), electronic switch device (3) were fixed in the outside of folded plate portion (53) and were made electronic switch device (3) bottom unsettled and be in core subassembly (2) top.

2. The safety isolating pressure switch of claim 1, wherein: the bottom of the electronic switch device (3) is provided with a contact (31), the side face of the electronic switch device (3) is provided with a plurality of assembly holes (32), the assembly holes (32) are fixed through bolts (34) and folded plate portions (53), and the assembly holes (32) are further fixed through the bolts (34) and vertical plate portions (52).

3. The safety isolating pressure switch of claim 2, wherein: the top of electronic switch device (3) sets up conductive contact (33), and conductive contact puts up through wire (35) and connects to binding post (6) on, and binding post's (6) opening direction and conductive contact (33) orientation deviate from mutually.

4. The safety isolating pressure switch of claim 1, wherein: platform (11) are circular, and protecting crust (4) are the cylindricality and cover on platform (11), still are provided with on protecting crust (4) and lack groove (41), lack and install screw (42) that are used for fixed protecting crust (4) on groove (41), and the lateral wall of protecting crust (4) is provided with internal thread interface (44), and internal thread interface (44) are gone up to stifled sealed lid (43) of being equipped with.

5. The safety isolating pressure switch of claim 1, wherein: core subassembly (2) are including activity dabber (21), spring (22) and spacing top cap (23), the lower extreme lateral wall of activity dabber (21) and installation pipe (13) inner wall seal assembly and relative activity from top to bottom, spacing top cap (23) are fixed on core groove (12) and are supplied the upper end part of activity dabber (21) to stretch out the spacing of realizing the upward movement, spring (22) are contradicted and are used for the lower limit position that resets activity dabber (21) at the downside of spacing top cap (23) and the lower extreme of activity dabber (21), the middle section position cover of activity dabber (21) is equipped with sealing washer (24).

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