CN2919505Y

CN2919505Y - Pressure switch

Info

Publication number: CN2919505Y
Application number: CN 200620039677
Authority: CN
Inventors: 侯耀淞
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-02-23
Filing date: 2006-02-23
Publication date: 2007-07-04
Anticipated expiration: 2016-02-23

Abstract

The utility model relates to a pressure switch and comprises a seat, a contact arrangement and a cover plate. The seat inside is provided with a sensitive switch with a sensitive terminal. Two end surfaces of the seat are provided with a socket hole and a seam hole. The contacting arrangement is provided through the socket hole, and composed of a contacting body, an adjusting block, a contacting bar and a switching unit. The contacting body is screwed in the socket hole with a hollow hole in the axial direction. The adjusting block is screwed at one side of the contacting body with a through-hole along the axis. The switching unit is screwed at the other side of the contacting body. The switching unit is provided with an inner hole. The orifice of the inner hole is faced outside. The inner side of the inner hole is sealed with a thin plate. The contacting bar is positioned inside the hollow hole, one side of the contacting bar is contacted to the sensitive terminal of the sensitive switch, and the other side is contacted with the thin plate of the switching unit. The contacting bar consists of a bar body with an axis penetrating through the entire through-hole and an elastic component covering the outside of the bar body, and can push the bar body to slide along the axial direction. The utility model has the advantages of simple structure, fast response and suitability for various liquid pipelines.

Description

Pressure switch

Technical field:

The utility model relates to a kind of pressure switch, relates in particular to a kind of pressure switch that is applied on the liquid line.

Background technology:

Be supplied with at present the pressure switch that much is applied on the various industrial production on the market, its function mainly is to be installed on all kinds of liquid lines, control the opening and closing of sensitive switch by the pressure of liquid, thereby realize being changed to according to production process is controlled automatically, to reach the purpose of increasing economic efficiency with the fluid pressure in the pipeline.Existing pressure switch has many different types of structures, as electromagnetic switch, area formula switch or the like.

Yet the pressure switch of above-mentioned each class formation all ubiquity the slow-paced problem of switching response, is difficult to meet the needs of fast and accurately the occasion of control automatically.Also have the function of partial pressure switch can reach rapidly the accurately requirement of action on the market, yet its structural design is very complicated, correspondingly manufacturing cost is also very high, costs an arm and a leg.

Summary of the invention:

In order to overcome the deficiencies in the prior art, the utility model provides the more simple and response of a kind of structure rapidly and the accurate pressure switch.

The technical scheme in the invention for solving the technical problem is:

A kind of pressure switch, it includes pedestal, touches group and cover plate; This pedestal has a storage tank, sets firmly a sensitive switch with sense terminals in the storage tank, and the two side faces of pedestal is respectively equipped with sleeve joint hole and the convergence hole that is communicated with storage tank; The described group that touches is arranged in the above-mentioned sleeve joint hole, it is by belled body, adjust piece, feeler lever portion and switching part are formed, this belled body is bolted in the sleeve joint hole and axially has a hollow via-hole, an end and axle center that the adjustment piece is screwed onto belled body are provided with through hole, switching part is screwed onto the other end of belled body, it is provided with the endoporus of opening in the outer end, has internal thread in this endoporus and its inner end is sealed by a thin slice, feeler lever portion is arranged in the hollow via-hole of belled body, the one end contacts on the sense terminals of sensitive switch, the other end contacts on the thin slice of switching part, is through at the interior body of rod of adjustment piece through hole and is enclosed within body of rod periphery and catch bar body elastic parts in axial sliding but this feeler lever portion includes axle; Described cover plate removably covers on the storage tank that places pedestal.

The feeler lever portion of pressure switch described in the utility model also includes first briquetting and second briquetting that is sheathed on the body of rod and lays respectively at the elastic parts both sides, this first briquetting is fastened in an end of the body of rod by C shape clasp, this second briquetting presses on the medial extremity of adjusting piece, this two briquetting is pressed elastic parts and is sandwiched between the two, and this elastic parts can be a spring; Described feeler lever portion also includes the cover body that is sheathed on the body of rod, and a side of this cover body is provided with concave face, and its center has a buried hole, is stacked with a film in this concave face and with the spacing cushion of a pad, the thin slice of this cushion and chovr body is inconsistent; One end of the described body of rod is provided with a nahlock, but this nahlock and above-mentioned film are inconsistent and sliding sleeve is gone in the buried hole, and the other end of the body of rod is provided with the threaded portion, is rotated with the socket piece that contacts mutually with the sensitive switch sense terminals on it; The two ends of described belled body hollow via-hole are respectively equipped with little inner bolt hole and big inner bolt hole, and the outer wall of this little inner bolt hole is provided with on the internal thread that external thread rotary is fixed in the pedestal sleeve joint hole, is provided with the end face of support surface with the location cover body in this belled body hollow via-hole; The outer end of described adjustment piece is provided with the locking part, and its inner is provided with in the little inner bolt hole of external thread part screw-in belled body; Described switching part one end is provided with in the big inner bolt hole that screws into belled body, and its other end is provided with the locking part; Described pedestal is provided with an annular ditch at the periphery of ccontaining notch, be placed with O shape ring in this annular ditch, pedestal around the ccontaining notch is provided with some screws, described cover plate should offer through hole on the position of screw mutually, the number screw tightening passes this through hole and screws in the screw, thereby cover plate is fastened on the pedestal.

Compare with existing known pressure switch, the utlity model has following beneficial effect:

1, response speed is fast, driving is rapid: described pressure switch directly is installed on the liquid line, when fluid pressure during greater than the elastic force of elastic parts, the thin slice of switching part promptly directly drives the sense terminals of sensitive switch by feeler lever portion, so that drive sensitive switch rapidly, thereby has the fast advantage of response speed.

2, simple in structure: described pressure switch by pedestal, touch group and a small amount of member such as cover plate is formed, the pressure switch that has but reached with labyrinth responds effect rapidly equally, thereby has reduced manufacturing cost.

Description of drawings:

Fig. 1 is stereoscopic figure of the present utility model.

Fig. 2 is an internal structure schematic diagram of the present utility model.

Fig. 3 is a structure cutaway view of the present utility model.

Fig. 4 is one of the utility model course of action schematic diagram.

Fig. 5 is two of the utility model course of action schematic diagram.

Embodiment:

Now with specific embodiment the utility model is made a detailed specific description in conjunction with the accompanying drawings.

At first see also Fig. 1 and Fig. 2 schematic diagram of the present utility model, the diagram pressure switch includes a pedestal 10, and touches group 20 and one cover plate 30.

Described pedestal 10 has a storage tank 11, sets firmly a sensitive switch 12 with sense terminals 120 in storage tank 11; Two sides of pedestal 10 are respectively equipped with sleeve joint hole 13 and the convergence hole 131 that is communicated with storage tank 11, and this sleeve joint hole 13 touches group 20 in order to be spirally connected, and this convergence hole 131 is in order to pass the electric wire that connects sensitive switch 12.Storage tank 11 notch peripheries are provided with an annular ditch 14 on pedestal 10 end faces, and are placed with an O shape ring 15 that is used to seal in annular ditch 14.Pedestal 10 around storage tank 11 notches is provided with some screws 16, and described cover plate 30 offers through hole on the position of corresponding each screw 16; Several locked assemblies 31 as screw, pass this through hole and screw in the screw 16, so that cover plate 30 detachable also lids hermetically are fixed on the storage tank 11 of pedestal 10.

Now see also Fig. 3 structure cutaway view of the present utility model again.Diagram touches group 20 and is arranged in the above-mentioned sleeve joint hole 13, and it is made up of belled body 21, adjustment piece 22, feeler lever portion 23 and switching part 24.Described belled body 21 is bolted in the sleeve joint hole 13, and has a hollow via-hole 210 vertically, and the two ends of this hollow via-hole 210 are respectively equipped with little inner bolt hole 211 and big inner bolt hole mouth 212; The outer wall of little inner bolt hole 211 is provided with external screw thread 213, and the inwall of sleeve joint hole 13 1 ends of described pedestal 10 is provided with internal thread 130, and this external screw thread 213 closely is rotated with on internal thread 130, thereby belled body 21 is fixed on the sleeve joint hole 13 of pedestal 10; Also be provided with a support surface 215 perpendicular to hollow via-hole 210 axis in the hollow via-hole 210 of described belled body 21.Described adjustment piece 22 is screwed onto an end of belled body 21, and its axle center is provided with through hole 220; The outer end of this adjustment piece 22 is provided with locking part 221, and its inner is provided with external thread part 222, and this external thread part 222 screws in the little inner bolt hole 211 of belled body 21, and its side end face is provided with concave face 223.Described switching part 24 is screwed onto the other end of belled body 21, and the one end is provided with locking part 242, and the other end is provided with external screw thread 240 and screws in the big inner bolt hole 212 of belled body 21, thereby switching part 24 is fixed on the belled body 21; Switching part 24 has endoporus 243 vertically, and the outer end of this endoporus 243 is provided with opening, and has internal thread 244 in the hole and get in order to whole pressure switch is connected to liquid line; The inner end of endoporus 243 is sealed up by a thin slice 241 that strain can take place, and makes endoporus 243 form a blind pipe that can only communicate with the outer end.Described feeler lever portion 23 is arranged in the hollow via-hole 210 of belled body 21, the one end contacts on the sense terminals 120 of sensitive switch 12, the other end contacts on the thin slice 241 of switching part 24, and this feeler lever portion 23 includes the body of rod 231, cover body 232, C shape clasp 233, elastic parts 235, first briquetting 234 and second briquetting 236.231 of the described bodies of rod are through within the hollow via-hole 210 of the through hole 220 of adjusting piece 22 and belled body 21, and can slide vertically therein; One end of the described body of rod 231 is provided with a nahlock 230, and the other end is provided with threaded portion 2310, has been rotated with a socket piece 2311 on it, and this socket piece 2311 contacts mutually with the sense terminals 120 of sensitive switch 12.Described cover body 232 is sheathed on the nahlock 230 of the body of rod 231, and its periphery is sleeved on the inwall of big inner bolt hole 212 of belled body 21 hollow via-holes 210, and one end is resisted against on the support surface 215 in the hollow via-hole 210 so that the location; One side of this cover body 232 is provided with concave face 2320, and its center has a buried hole 2321; Be provided with a film 2322 in this concave face 2320 stackedly and with the spacing cushion 2324 of a pad 2323, this cushion 2324 is inconsistent with the thin slice 241 of chovr body 24, thereby makes thin slice 241 unlikely wearing and tearing in amoeboid movement.Nahlock 230 and above-mentioned film 2322 on the described body of rod 231 are inconsistent, and slidably are inserted among the buried hole 2321 at concave face 2320 centers on the cover body 232.Described elastic parts 235 is a cylindricality spiral compression spring, the vestibule that it is enclosed within the periphery of the body of rod 231 and is positioned at hollow via-hole 210.Be respectively equipped with first briquetting 234 and second briquetting 236 in the both sides of this elastic parts 235, this two

briquetting

234 and 236 all is enclosed within on the body of rod 231; First briquetting 234 is positioned at an end of close cover body 232 on the body of rod 231, and be fastened on the body of rod 231 by C shape clasp 233, second briquetting 236 then is positioned at the other end of the body of rod 231 and presses on the medial extremity of adjusting piece 22, and its side has a dome 2360 and is placed among the concave face 223 of adjusting piece 22 external thread parts 222 sides; From the above mentioned, this two briquetting 234 and 236 is pressed elastic parts 235 and is sandwiched in them between the two, thereby elastic parts 235 recovers elastic force and the body of rod 231 pushed vertically to the left side (see figure 3) on two briquettings 234,236 by applying, thereby makes nahlock 230 contact tightly on film 2322 and push against cushion 2324 and thin slice 241 successively.

The installation of pressure switch described in the utility model and operation principle can be referring to Fig. 4 and Fig. 5.Described pressure switch is spirally connected by the internal thread in switching part 24 endoporus 243 244 and is fixed on the liquid line, and after liquid line was communicated with, the liquid in the pipeline just flowed into and is filled in the endoporus 243 of switching part 24.Now at first consult Fig. 4, because the liquid in the pipeline has certain pressure, so the pressure of liquid will put on the thin slice 241 that is sealed in switching part 24 endoporus 243 the inners, and make this thin slice 241 laterally (along the direction shown in the dotted arrow among Fig. 4) deform.When elastic restoring force that fluid pressure produces during greater than elastic parts 235 compression, hydraulic coupling will promote thin slice 241 distortion and outside displacement movement takes place.So thin slice 241 promotes the body of rod 231 by stacked cushion 2324 and film 2322 again, thereby the nahlock 230 of the body of rod 231 slips into the buried hole 2321 of cover body 232, then the body of rod 231 slippage to the right vertically (seeing shown in Fig. 4 arrow), the socket piece 2311 of the body of rod 231 ends promptly promotes the sense terminals 120 of sensitive switch 12, and sensitive switch 12 is switched.See also Fig. 5 again, when the pressure in the liquid line diminishes, the elastic restoring force push card of elastic parts 235 is fixed in first briquetting 234 on the body of rod 231, and and then catch bar body 231 slippage left vertically (see among Fig. 5 shown in the dotted arrow), therefore thin slice 241 restores to the original state, and while sense terminals 120 resets and sensitive switch 12 takes place oppositely to switch once more.The threshold values of fluid pressure when switching in order to set sensitive switch can turn be adjusted piece 22, to adjust the initial elastic force of elastic parts 235.By said process, pressure switch described in the utility model just can realize changing the purpose of controlling the sensitive switch open and-shut mode according to the fluid pressure in the pipeline.

In sum, the utility model promotes the body of rod 231 by being subjected to the thin slice 241 that fluid pressure is out of shape in the pipeline, and then directly drives sensitive switch 12 realization switchings.Therefore, pressure switch described in the utility model have simple in structure, respond advantage rapidly.

Claims

1, a kind of pressure switch is characterized in that: it includes pedestal (10), touches group (20) and cover plate (30); Described pedestal (10) has a storage tank (11), sets firmly a sensitive switch (12) with sense terminals (120) in this storage tank (11), and the two side faces of pedestal (10) is respectively equipped with sleeve joint hole (13) and the convergence hole (131) that is communicated with storage tank (11); The described group (20) that touches is arranged in the above-mentioned sleeve joint hole (13), it is by belled body (21), adjust piece (22), feeler lever portion (23) and switching part (24) are formed, described belled body (21) is bolted in the sleeve joint hole (13) and axially has a hollow via-hole (210), an end and axle center that described adjustment piece (22) is screwed onto belled body (21) are provided with through hole (220), described switching part (24) is screwed onto the other end of belled body (21), it is provided with the endoporus (243) of opening in the outer end, having internal thread (244) and its inner end in this endoporus (243) is sealed by a thin slice (241), described feeler lever portion (23) is arranged in the hollow via-hole (210) of belled body (21), the one end contacts on the sense terminals of sensitive switch (12) (120), the other end contacts on the thin slice of switching part (24) (241), and described feeler lever portion (23) includes axle and is through at and adjusts the body of rod (231) in piece (22) through hole (220) and be enclosed within the body of rod (231) periphery and can promote the body of rod (231) elastic parts (235) in axial sliding; Described cover plate (30) removably covers on the storage tank (11) that places pedestal (10).

2, pressure switch according to claim 1, it is characterized in that: described feeler lever portion (23) also includes and is sheathed on first briquetting (234) and second briquetting (236) that elastic parts (235) both sides were gone up and laid respectively to the body of rod (231), this first briquetting (234) is fastened in an end of the body of rod (231) by C shape clasp (233), this second briquetting (236) presses on the medial extremity of adjusting piece (22), and this two briquetting (234,236) is pressed elastic parts (235) and is sandwiched between the two.

3, pressure switch according to claim 1 and 2 is characterized in that: described elastic parts (235) is a spring.

4, pressure switch according to claim 1 and 2, it is characterized in that: described feeler lever portion (23) also includes the cover body (232) that is sheathed on the body of rod (231), one side of this cover body (232) is provided with concave face (2320), its center has a buried hole (2321), be stacked with a film (2322) in this concave face (2320) and with the spacing cushion (2324) of a pad (2323), this cushion (2324) is inconsistent with the thin slice (241) of chovr body (24); One end of the described body of rod (231) is provided with a nahlock (230), this nahlock (230) and above-mentioned film (2322) but inconsistent and sliding sleeve go in the buried hole (2321), the other end of the body of rod (231) is provided with threaded portion (2310), is rotated with the socket piece (2311) that contacts mutually with sensitive switch (12) sense terminals (120) on it.

5, pressure switch according to claim 4, it is characterized in that: the two ends of described belled body (21) hollow via-hole (210) are respectively equipped with little inner bolt hole (211) and big inner bolt hole (212), the outer wall of this little inner bolt hole (211) is provided with external screw thread (213) and is rotated with on the internal thread (130) of pedestal (10) sleeve joint hole (13), is provided with the end face of support surface (215) with location cover body (232) in this belled body (21) hollow via-hole (210).

6, pressure switch according to claim 5 is characterized in that: the outer end of described adjustment piece (22) is provided with locking part (221), and its inner is provided with in the little inner bolt hole (211) of external thread part (222) screw-in belled body (21).

7, pressure switch according to claim 6 is characterized in that: described switching part (24) one ends are provided with in the big inner bolt hole (212) of external screw thread (240) screw-in belled body (21), and its other end is provided with locking part (242).

8, pressure switch according to claim 1 is characterized in that: described pedestal (10) is provided with an annular ditch (14) at the periphery of storage tank (11) mouth, is placed with O shape ring (15) in this annular ditch (14).

9, according to claim 1 or 8 described pressure switches, it is characterized in that: the pedestal (10) around described storage tank (11) mouth is provided with some screws (16), described cover plate (30) should offer through hole on the position of screw (16) mutually, number screw tightening (31) passes this through hole and screws in the screw (16), thereby cover plate (30) is fastened on the pedestal (10).