CN201651342U

CN201651342U - Electric-control sensitive air pressure regulator

Info

Publication number: CN201651342U
Application number: CN2010201848848U
Authority: CN
Inventors: 王金波
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-11
Filing date: 2010-05-11
Publication date: 2010-11-24
Anticipated expiration: 2020-05-11

Abstract

The utility model discloses an electric-control sensitive air pressure regulator, which comprises an upper cover, a main valve stem return spring, a corrugated pipe, a main valve body, a main valve stem, a sealing ring, a valve seat, a needle valve, a lower cover plate and a power supply. An electromagnet is arranged below the valve seat of the main valve stem. A control device capable of controlling the electromagnet is arranged at the outlet valve port of the main valve body and is formed by a small spool, a small valve body, a small spool return spring, a small valve body contract block and a sealing ring. The small spool is connected with one end of the power supply and the small valve body contact block is connected with the other end of the power supply. The small spool and the small valve body contact block are in contact to form a loop. The utility model has the advantages that the technique of the air pressure regulator is improved, the structure is simple, the economy and the practicability are high, the service life is three times of the service life of the original air pressure regulator, the sensitivity is improved and the maintenance is convenient.

Description

A kind of automatically controlled sensitive formula barostat

Technical field:

The utility model belongs to automobile pressure regulator technical field, is specifically related to a kind of automatically controlled sensitive formula barostat.

Background technique

At present the barostat of using on the automobile is loaded between air compressor and the gas holder, is to be used to regulate the gas holder internal pressure and a kind of pneumatic control components of existing.Structure by: valve seat, needle type valve, handle, valve rod are formed.During work, the operator depresses spool by regulating handle, and valve port is opened, and initial input pressure forms secondary air pressure by the throttling action of needle type valve, and this secondary air pressure is exactly the pressure in the gas holder.Also have a secondary air pressure to enter bellows, when the first air pressure of air compressor input increases, also along with increase, at this moment the spring on the bellows rises under pressure through the secondary air pressure of throttling, and valve seat also then rises, the valve port flow reduces, then the secondary air pressure of holding back through needle type valve is also along with reducing, and the spring on the bellows is with valve stem depressions, and then valve seat also moves down, needle type valve moves down, and the valve port flow increases.The compressibility of gas is bigger, in the pressure regulation process, if the pressure in the bellows has increased, but fails to promote the spring of its top, has at this moment just lost the effect of regulating, and secondary pressure constantly increases, gas holder internal pressure instability.Pressure hysteresis appears regulating, the phenomenon that conditioned reaction is slow, and in a single day inner piece damage problem appears, maintenance is extremely inconvenient.

Summary of the invention

The technical problems to be solved in the utility model is to overcome disadvantages of background technology, and a kind of simple and highly sensitive barostat rational in infrastructure is provided, and is a kind of automatically controlled sensitive formula barostat.

The technical solution of the utility model is: a kind of automatically controlled sensitive formula barostat, comprise loam cake, main valve stem return spring, bellows, main valve body, main valve stem, seal ring, valve seat, needle type valve, lower cover plate, power supply, the valve seat of main valve stem is arranged with electromagnet, the outlet valve port place of main valve body is provided with the control gear that can control electromagnet, control gear is made up of small valve core, little valve body, small valve core return spring, little valve body contact block, seal ring, small valve core connects power supply one end, the small valve core contact block connects the power supply the other end, and their contacts form the loop.

The beneficial effect that adopts the utility model to produce is: the technology that has realized barostat improves, and simple in structure, economic and practical, be 3 times of former barostat working life, and main is that sensitivity improves, and easy to maintenance.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1: be the utility model internal structure schematic representation;

Fig. 2: for the A-A of Fig. 1 analyses and observe the structure for amplifying schematic representation.

Among Fig. 1: 1 is that loam cake, 2 is that main valve stem return spring, 3 is that bellows, 4 is that main valve body, 5 is that main valve stem, 6 is that seal ring, 7 is that valve seat, 8 is a needle type valve, and 9 is that lower cover plate, 10 is that electromagnet, 11 is that power supply, 12 is that little valve body, 13 is that small valve core return spring, 14 is that small valve core, P1 are that initial pressure, P2, P3 are secondary pressure.

Among Fig. 2: 15 is that small valve core contact block, 14 is that small valve core, 6 is seal ring.

Embodiment:

The contrast accompanying drawing is described further the utility model:

A kind of automatically controlled sensitive formula barostat described in the utility model, agent structure comprises loam cake 1, main valve stem return spring 2, bellows 3, main valve body 4, main valve stem 5, seal ring 6, valve seat 7, needle type valve 8, lower cover plate 9, power supply 11, the valve seat 7 of main valve stem 5 is arranged with electromagnet 10, the outlet valve port place of main valve body 4 is provided with the control gear that can control electromagnet 10, control gear is by small valve core 14, little valve body 12, small valve core return spring 13, little valve body contact block 15, seal ring 6 is formed, small valve core 14 connects power supply 11 1 ends, small valve core contact block 15 connects power supply 11 the other ends, and their contacts form the loop.

The utility model is installed electromagnet under the valve seat in main valve chamber, the place's rational position of giving vent to anger is settled electromagnet control device, and purpose is the size of control electromagnet magnetic force, and then the control needle type valve is opened the flow of valve port.Small valve core moves up and down at the centerline direction of seal ring, one sulculus is arranged in the seal ring, there is the small valve core contact block the inside, small valve core connects power supply one end, the small valve core contact block connects the power supply the other end, their contacts form the loop, small valve core moves up and down the area of contact of change and contact block, change the electric current of electromagnet coil, thereby the magnetic force of control electromagnet is valve seat above the electromagnet, valve rod and needle type valve are arranged on the valve seat, needle type valve control valve port flow, valve rod is controlled at valve seat and the needle type valve above it, and valve rod protrudes upward by valve body.The main valve stem return spring is housed above, also has bellows, top is a loam cake.

The utility model in use, when starting working, the gas holder internal pressure reduces, at this moment small valve core 14 is with to contact fast 15 area of contact bigger, coil current by electromagnet 10 is also big, the magnetic force of electromagnet 10 is bigger, so overcome the elastic force of main valve stem return spring 2, holding valve seat 7 moves down, needle type valve 8 also moves down, valve port is increased, flow also increases, the initial pressure P1 that provides by air compressor through needle type valve 8 throttlings after, a part flows into bellows 3, forms pressure P 2, a part flows into gas holder, form P3. when the initial pressure P1 of air compressor input increases, through the P2 of needle type valve throttling, P3 also increases thereupon, under secondary pressure P3 pressure, 13 distortion of small valve core return spring, small valve core 14 descends, and the area of contact of small valve core 14 and contact block 15 reduces, and the electric current of the coil by electromagnet 10 reduces, thereby the magnetic force of electromagnet 10 descends, the return spring 2 of main valve stem 5 overcomes magnetic force, and main valve stem 5 is upwards pushed away, and valve seat 7 moves simultaneously, drive on the needle type valve 8 and move, the flow of valve port inlet reduces the secondary pressure P2 after the shunting, P3 also reduces, to reach the purpose of voltage stabilizing.

Claims

1. automatically controlled sensitive formula barostat, comprise loam cake (1), main valve stem return spring (2), bellows (3), main valve body (4), main valve stem (5), seal ring (6), valve seat (7), needle type valve (8), lower cover plate (9), power supply (11), its major character is: the valve seat (7) of main valve stem (5) is arranged with electromagnet (10), the outlet valve port place of main valve body (4) is provided with the control gear that can control electromagnet (10), control gear is by small valve core (14), little valve body (12), small valve core return spring (13), little valve body contact block (15), seal ring (6) is formed, small valve core (14) connects power supply (11) one ends, and small valve core contact block (15) connects power supply (11) the other end.