CN212934481U

CN212934481U - Micro differential pressure switch with external protection

Info

Publication number: CN212934481U
Application number: CN202021903101.7U
Authority: CN
Inventors: 张进
Original assignee: Wuhan Desai Instrument Technology Co ltd
Current assignee: Wuhan Desai Instrument Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-04-09
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a differential pressure switch with outside protection, including differential pressure switch body and joint, differential pressure switch body surface turn-on connection connects, differential pressure switch body fixed connection is at the chassis upper surface, fixed surface connects rubber retainer ring on the chassis, chassis one side hinged joint protective cover, the protective cover lower surface bonds there is the second sealing washer, the protective cover inner wall bonds there is the heat preservation cotton, the inside top fixed surface of protective cover connects the metal hoop, the bar type rib of fixed surface connection on the protective cover, bar type rib is a plurality of, and the equipartition is at the protective cover upper surface, protective cover lateral wall position has been seted up and has been worn the tub groove. The utility model discloses a protective cover protects the differential pressure switch body, prevents that external object from directly striking differential pressure switch body, and ferrule and strip type rib improve protective cover structural strength, and the leakproofness is good between protective cover and the chassis, and dustproof and waterproof reduces the corruption.

Description

Micro differential pressure switch with external protection

Technical Field

The utility model relates to a little differential pressure switch technical field specifically is a little differential pressure switch with outside protection.

Background

The micro differential pressure switch is an instrument which utilizes the pressure of gas to push a micro switch and realizes the conversion from a micro differential pressure signal to a switching value signal. The micro differential pressure switch is provided with two detection ports, namely a positive pressure detection port and a negative pressure detection port, and the cavity of the micro differential pressure switch is divided into a positive pressure cavity and a negative pressure cavity. The two cavities are isolated by a membrane, when a pressure source exists, the membrane moves to touch the micro switch so as to achieve the ON/OFF purpose, the micro differential pressure switch is provided with a regulating control disc, and the pressure of the spring is changed during regulation so that the starting point and the shutdown point (namely the ON point and the OFF point) of the wind pressure switch are changed.

However, the existing micro differential pressure switch has the following disadvantages when in use:

when the differential pressure switch is installed, the differential pressure switch is directly exposed in the air, is easily corroded by impact of external objects and natural weather, can cause damage to an external structure of the differential pressure switch, can reduce the use effect and the service life of the differential pressure switch, can additionally increase the use cost due to complex maintenance and overhaul work in the later period, and causes more property loss for users.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a differential pressure switch with outside protection to current differential pressure switch that proposes in solving above-mentioned background art is when using, in the time of differential pressure switch installation, directly expose in the air, receive external object's striking and natural weather's corruption easily, not only can cause its outer structure to receive the damage, still can reduce its result of use and life-span, the loaded down with trivial details maintenance in later stage and maintenance work, will additionally increase use cost, cause more loss of property's problem for the user.

In order to solve the technical problem, the utility model provides a following technical scheme: a micro differential pressure switch with external protection comprises a micro differential pressure switch body and a joint, wherein the surface of the micro differential pressure switch body is communicated with the joint, the micro differential pressure switch body is fixedly connected to the upper surface of a chassis, the upper surface of the chassis is fixedly connected with a rubber check ring, one side of the chassis is hinged with a protective cover, a second sealing ring is bonded to the lower surface of the protective cover, heat-insulating cotton is bonded to the inner wall of the protective cover, a metal hoop is fixedly connected to the top end of the inner part of the protective cover, strip-shaped ribs are fixedly connected to the upper surface of the protective cover and are uniformly distributed on the upper surface of the protective cover, pipe penetrating grooves are formed in the side wall positions of the protective cover, sealing components are fixedly connected to the inner parts of the pipe penetrating grooves, the micro differential pressure switch body is protected through the protective cover, external objects are prevented from directly impacting the micro differential pressure switch body, the sealing performance between the protective cover and the chassis is good, and the dustproof and waterproof structure can reduce corrosion.

Further, differential pressure switch body is located inside the rubber retaining ring, the protective cover internal diameter is greater than the rubber retaining ring external diameter, and when differential pressure switch body used, the protective cover was established at differential pressure switch body outsidely, and the infiltration of the effectual prevention water liquid of rubber retaining ring reduces the corruption of water liquid.

Furthermore, the chassis upper surface bonds and has first sealing washer, first sealing washer is corresponding and the specification is the same with the second sealing washer, the chassis surface symmetry sets up threaded hole, and the protective cover pressfitting is on the chassis upper surface, and first sealing washer and second sealing washer cooperate the use, have dual sealing performance, improve waterproof dustproof performance.

Further, seal assembly includes rubber strip and brush respectively, the rubber strip bonds at poling inslot wall, the brush is compound on the rubber strip surface, reserves poling groove on the protective cover surface for the joint on differential pressure switch body surface passes, and seal assembly improves the leakproofness of poling groove and joint between, and rubber strip cooperation brush uses, blocks water and prevents dust again.

Further, the protective cover upper surface is close to marginal position fixed connection handle, the fixture block is installed to protective cover lower surface position symmetry, conveniently carries through the handle and draws the protective cover.

Furthermore, a clamping groove is formed in the upper surface of the base plate and is matched with the clamping block in a clamped mode, and when the protective cover is pressed on the base plate relatively, the clamping block is inserted into the clamping groove, so that the mounting is convenient and the fixing is fixed.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

1. the utility model discloses differential pressure switch body fixed connection is at the chassis upper surface, chassis one side hinged joint protective cover, and protective cover cooperation chassis carries out collision avoidance to differential pressure switch body, and metal hoop and strip type rib improve protective cover structural strength and compressive effect, keep differential pressure switch body external structure's integrality.

2. The utility model discloses fixed surface connects rubber retainer ring on the chassis prevents the entering of water liquid, and protective cover lower surface bonds and has the second sealing washer, and chassis upper surface bonds and has first sealing washer, and first sealing washer is the same with the corresponding and specification of second sealing washer, and chassis surface symmetry sets up threaded hole, and the protective cover pressfitting is on the chassis upper surface, and first sealing washer and second sealing washer cooperation are used, have dual sealing performance, improve waterproof dustproof performance, reduce the corruption.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the connection structure of the chassis and the rubber retainer ring of the present invention;

fig. 3 is a schematic structural view of the protective cover of the present invention;

fig. 4 is a schematic view of the connection structure of the protecting cover and the sealing assembly of the present invention;

in the figure: 1. a chassis; 101. a threaded hole; 2. a first seal ring; 3. a card slot; 4. a rubber retainer ring; 5. a micro differential pressure switch body; 501. a joint; 6. a second seal ring; 7. a protective cover; 701. a pipe penetrating groove; 8. a clamping block; 9. a seal assembly; 901. a rubber strip; 902. a brush; 10. heat preservation cotton; 11. a metal ferrule; 12. a handle; 13. a bar-shaped rib.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a differential pressure switch with external protection, includes differential pressure switch body 5 and connects 501, 5 surface turn-on connection joints 501 of differential pressure switch body, differential pressure switch body 5 fixed connection is on 1 upper surface in chassis, 1 upper surface fixed connection rubber retainer ring 4 in chassis, 1 one side hinged joint protective cover 7 in chassis, protective cover 7 lower surface bonds and has second sealing washer 6, protective cover 7 inner wall bonds and has heat preservation cotton 10, the inside top position fixed connection metal hoop 11 of protective cover 7, protective cover 7 upper surface fixed connection strip type rib 13, strip type rib 13 is a plurality of, and the equipartition is at protective cover 7 upper surface, protective cover 7 lateral wall position has seted up and has worn tub socket 701, the inside fixed connection seal assembly 9 of wearing tub socket 701.

Little differential pressure switch body 5 is located inside rubber retaining ring 4, protective cover 7 internal diameter is greater than 4 external diameters of rubber retaining ring, and when little differential pressure switch body 5 used, protective cover 7 covers and establishes 5 outsides at little differential pressure switch body, and the infiltration of the effectual prevention water liquid of rubber retaining ring 4 reduces the corruption of water liquid.

The upper surface of the chassis 1 is bonded with a first sealing ring 2, the first sealing ring 2 is corresponding to a second sealing ring 6, the specifications of the first sealing ring 2 are the same, threaded holes 101 are symmetrically formed in the surface of the chassis 1, a protective cover 7 is pressed on the upper surface of the chassis 1, and the first sealing ring 2 and the second sealing ring 6 are matched for use, so that the double-sealing performance is realized, and the waterproof and dustproof performance is improved.

The sealing assembly 9 comprises a rubber strip 901 and a brush 902 respectively, the rubber strip 901 is adhered to the inner wall of the pipe penetrating groove 701, the brush 902 is compounded on the surface of the rubber strip 901, the pipe penetrating groove 701 is reserved on the surface of the protective cover 7 and used for allowing the joint 501 on the surface of the micro differential pressure switch body 5 to penetrate through, the sealing assembly 9 improves the sealing performance between the pipe penetrating groove 701 and the joint 501, and the rubber strip 901 is matched with the brush 902 for water and dust prevention.

Protective cover 7 upper surface is close to marginal position fixed connection handle 12, protective cover 7 lower surface position symmetry installation fixture block 8 conveniently carries and draws protective cover 7 through handle 12.

Draw-in groove 3 has been seted up to 1 upper surface on chassis, draw-in groove 3 and the cooperation of 8 joints of fixture block, when the relative chassis 1 pressfitting of protective cover 7, the fixture block 8 is pegged graft inside draw-in groove 3, and is easy to assemble fixed.

The utility model discloses a theory of operation: the micro differential pressure switch body 5 is fixedly connected to the upper surface of the base plate 1, one side of the base plate 1 is hinged with a protective cover 7, and the protective cover 7 and the base plate 1 are used for performing anti-collision protection on the micro differential pressure switch body 5; the top end position inside the protective cover 7 is fixedly connected with the metal hoop 11, the upper surface of the protective cover 7 is fixedly connected with the strip-shaped ribs 13, the number of the strip-shaped ribs 13 is multiple, and the metal hoop 11 and the strip-shaped ribs 13 improve the structural strength of the protective cover 7 and have good compression resistance; the upper surface of the chassis 1 is fixedly connected with a rubber check ring 4, the lower surface of the protective cover 7 is bonded with a second sealing ring 6, the upper surface of the chassis 1 is bonded with a first sealing ring 2, the first sealing ring 2 and the second sealing ring 6 correspond to each other and have the same specification, threaded holes 101 are symmetrically formed in the surface of the chassis 1, the protective cover 7 is pressed on the upper surface of the chassis 1, and the first sealing ring 2 and the second sealing ring 6 are matched for use, so that the waterproof and dustproof performance is improved; the inner wall of the protective cover 7 is bonded with heat insulation cotton 10, and the heat insulation cotton 10 has the function of heat insulation; pipe penetrating grooves 701 are formed in the side wall positions of the protective cover 7, a sealing assembly 9 is fixedly connected inside the pipe penetrating grooves 701, the sealing assembly 9 comprises rubber strips 901 and brushes 902 respectively, the rubber strips 901 are adhered to the inner walls of the pipe penetrating grooves 701, the brushes 902 are compounded on the surfaces of the rubber strips 901, the pipe penetrating grooves 701 are reserved on the surface of the protective cover 7, joints 501 on the surface of the micro differential pressure switch body 5 penetrate, the sealing assembly 9 improves the tightness between the pipe penetrating grooves 701 and the joints 501, the rubber strips 901 are matched with the brushes 902 for use, water blocking and dust prevention are achieved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A micro differential pressure switch with external protection comprises a micro differential pressure switch body (5) and a connector (501), wherein the surface of the micro differential pressure switch body (5) is communicated with the connector (501), and the micro differential pressure switch is characterized in that: the micro differential pressure switch comprises a micro differential pressure switch body (5) and is characterized in that the micro differential pressure switch body (5) is fixedly connected to the upper surface of a chassis (1), the upper surface of the chassis (1) is fixedly connected with a rubber check ring (4), one side of the chassis (1) is hinged with a protective cover (7), a second sealing ring (6) is bonded to the lower surface of the protective cover (7), heat-insulating cotton (10) is bonded to the inner wall of the protective cover (7), the inner top end of the protective cover (7) is fixedly connected with a metal hoop (11), the upper surface of the protective cover (7) is fixedly connected with a strip-shaped rib (13), the strip-shaped rib (13) is a plurality of and is uniformly distributed on the upper surface of the protective cover (7), a pipe penetrating groove (701) is formed in the side wall.

2. The micro differential pressure switch with external protection according to claim 1, wherein: the micro differential pressure switch body (5) is located inside the rubber check ring (4), and the inner diameter of the protective cover (7) is larger than the outer diameter of the rubber check ring (4).

3. The micro differential pressure switch with external protection according to claim 1, wherein: the upper surface of the chassis (1) is bonded with a first sealing ring (2), the first sealing ring (2) corresponds to a second sealing ring (6) and has the same specification, and threaded holes (101) are symmetrically formed in the surface of the chassis (1).

4. The micro differential pressure switch with external protection according to claim 1, wherein: the sealing assembly (9) comprises a rubber strip (901) and a brush (902), the rubber strip (901) is adhered to the inner wall of the pipe penetrating groove (701), and the brush (902) is compounded on the surface of the rubber strip (901).

5. The micro differential pressure switch with external protection according to claim 1, wherein: protective cover (7) upper surface is close to marginal position fixed connection handle (12), protective cover (7) lower surface position symmetry installation fixture block (8).

6. The micro differential pressure switch with external protection according to claim 1, wherein: the upper surface of the chassis (1) is provided with a clamping groove (3), and the clamping groove (3) is matched with the clamping block (8) in a clamping manner.