CN202173854U

CN202173854U - Pulse valve

Info

Publication number: CN202173854U
Application number: CN201120305578XU
Authority: CN
Inventors: 张元杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-22
Filing date: 2011-08-22
Publication date: 2012-03-28
Anticipated expiration: 2021-08-22

Abstract

A pulse valve, the valve body and the valve core are valve body (4) and valve core (5) of a piston valve. The action executing mechanism of the valve core is a piston cylinder. The piston rod (9) is inserted in the valve body (4) to be used as the core rod of the valve core (5). The valve core (5) is fixed on the flexible end of the piston rod (9); the valve body (4) is fixedly connected with the cylinder (13). The solenoid valve (15) is fixed on the cylinder (13) or valve body (4). Two external pipe orifices on the solenoid valve (15) are communicated with two fluid inlet-outlets on the cylinder (13) via a pipeline. The utility model is simple in structure, reliable in action, good in sealing effect, long in service life, strong in capacity for resisting environment interference and low in manufacturing cost with fast response, shortest passageway and lowest pressure drop. The utility model is small in volume, good in manufacturability and long in service life. The utility model can be manufactured as please with large caliber, and therefore, the utility model is very practical for occasion with high-flow working condition.

Description

A kind of pulse valve

Technical field

The utility model relates to a kind of valve, relates in particular to a kind of pulse valve.Relate to the pulse valve field in the sack cleaner.

Background technology

Deashing in the sack cleaner is to adopt pulse valve that compressed air is inserted filter bag inside, will oppositely be blown in the ash bucket attached to the outside dust of filter bag.

Chinese patent notification number CN 200954422Y, on October 3 2007 day for announcing, the utility model name is called " pulse valve that a kind of pulse bag type dust collector is used "; It comprises magnetic valve, little valve gap, big valve gap; Magnetic valve is connected with little valve gap top, and the bottom of little valve gap is fixedly connected with the top of big valve gap, and the bottom of big valve gap is provided with big diaphragm; Be provided with Small diaphragm-piece between little valve gap and the big valve gap; Little valve gap inner chamber and Small diaphragm-piece form venting chambers, and big valve gap inner chamber forms lower chamber with big diaphragm, Small diaphragm-piece, and big valve gap is fixed on the outer wall of branch gas tank; Big pressing diaphragm divides an end of a typhon mouth of gas tank to withstand on the middle cover on the big diaphragm between the outer wall of big valve gap and branch gas tank.Magnetic valve is through two air chamber control impuls valves, to magnetic valve require low, not fragile, easy to maintenance.But the structure relative complex of this utility model, volume is bigger, and response speed is lower; Consumable accessory is many, and is withstand voltage and sealing property is relatively poor, and that rubber diaphragm is prone to is aging, pilot valve damping hole size is minimum; Be prone to stop up, cause the pulse valve action malfunctioning, the reliability of use and durability are still waiting to improve.

Summary of the invention

The purpose of the utility model is that existing pulse valve rubber diaphragm is prone to wear out in order to overcome, pilot valve damping hole size is minimum, is prone to stop up, and causes malfunctioning, the complex structure of pulse valve action; Low-response; Volume is big, and withstand voltage and defective and deficiency that sealing property is relatively poor provide a kind of simple in structure; Response is fast, the pulse valve of withstand voltage and good sealing effect.

For realizing above purpose, the technical solution of the utility model is: a kind of pulse valve comprises valve body; Spool, spool action actuating mechanism and magnetic valve, described valve body and spool are the valve body and the spool of piston valve; Described spool action actuating mechanism is a piston cylinder, and piston cylinder comprises the piston rod that cylinder body is outside with stretching out cylinder body, and described piston rod stretches into the core bar of valve inner as spool; Described spool is fixed on the flexible end of piston rod; Described valve body is fixedly connected with cylinder body, and described magnetic valve is fixed on cylinder body or the valve body, and two external mouths of pipe on the magnetic valve are connected with two fluid inlet and outlets on the cylinder body through pipeline.

Described spool adopts metal material to process, and is provided with the duct of matching with spool in the described valve body.

Be provided with valve core seal ring in the described duct, the end of said spool is provided with the taper chamfering.

Described valve core seal ring is the U RunddichtringO.

Be provided with the duct of diameter less than the spool end diameter in the described valve body, the end face of said spool is provided with elaxtic seal.

Corresponding two valve ports are respectively arranged with the first valve port flange and the second valve port flange on the described valve body, and the joint face of valve body and the first valve port flange, the second valve port flange is provided with the flange seal circle.

Described flange seal circle is the O RunddichtringO.

Described valve body is socketed on the cylinder body of piston rod exposed junction, and the mating surface of valve body and cylinder body is provided with valve seals.

Described valve seals is the O RunddichtringO.

Described piston valve is piston type angle valve or straight-through valve, and piston cylinder is cylinder or hydraulic jack, and described magnetic valve is a two-position four-way solenoid valve.

Compared with prior art, the beneficial effect of the utility model is:

1, the spool of piston valve adopts piston structure, the piston rod on the piston cylinder to stretch in the valve body as the core bar of piston valve core in the utility model, and spool is fixed on the piston rod.Identical with existing piston valve, also elaxtic seal can be installed on the spool, and make cartridge cover on the duct of valve body interior diameter less than spool.Spool preferably adopts metal material such as steel to process; The duct that is slidingly matched with spool is set in valve body; And valve core seal ring is set in the duct; Make the valve core seal ring interoperation in spool and the valve body, can realize inclusion seal, the piston cylinder upper piston rod stretch out and two strokes of withdrawing have determined the position and the stroke of the opening and closing of valve body inner spool.

2, the utility model is simple in structure, reliable in action, and good sealing effect, long service life, anti-environmental interference ability is strong, and response is fast, and runner is the shortest, and flow resistance is little, and pressure drop is minimum, and withstand voltage rank is high, low cost of manufacture.The control power supply of the utility model can be by PLC programme-control or the control of hand push button switch; Magnetic valve can also adopt the anti-form of exposing to the sun, to satisfy the demand of special operation condition environment, to adapt to like inflammable and explosive occasions such as coal gas, natural gas, chemical pernicious gas, liquid.

3, the import and export position relation by valve port can be arranged to perpendicular type (being that import and export place-centric line is an angle of 90 degrees) and through-type (being that the import and export center line is horizontal parallel) on the valve body of the utility model; Easy for installation; The two way seal structure that matches with the duct of spool particularly; Make the import and export of valve body can exchange use, be convenient to pipe arrangement.

4, the piston cylinder of the utility model can adopt cylinder or hydraulic jack, and is simple to operation when heavy caliber (being suitable for big flow) control through hydraulic pressure or pneumatic actuation, is convenient to automatic control; For the high pressure fluid, the use occasion of gas very adapts to; Do not have first guide structure, response is fast, and dynamic equilibrium is effective; With respect to the pulse valve that uses on the existing sack cleaner equipment; The utility model does not have pilot stage control, no spring, no rubber film; The runner damping hole of pulse valve pilot stage has not just had like this; It is stuck just can not valve to occur, and pilot stage is failure to actuate, the problem that main valve plug is failure to actuate, rubber film is aging.

5, in the utility model because piston adopts the hydraulic cylinder sealing structure, valve body and spool adopt steel part, so its withstand voltage rank is high, the pressure through medium can reach 31.5MPa; Can control the stroke of driving oil cylinder when driving through servo amplifier if adopt servo-cylinder (oil cylinder of band position sensor); Through setting the opening size control arbitrarily that can realize spool; And then realize flow-control through this valve; Promptly can be used for timing gearing system, realize arbitrary speed control by flow output decision; The auto-switch function of this valve also can be realized time switch control by control program, is used for automation is had the operating mode occasion of requirement.

6, the utility model volume is little, good manufacturability, and long service life can manufacture bigger bore, and is therefore very practical to big flow operating mode occasion.Because this valve has good technology manufacturing property, make low cost of manufacture, so possessed excellent economy.The Applicable media of the utility model is wider; Like air (comprising compressed air), hot-air, steam, water, oil, coal gas, natural gas, chemical liquid, gas etc.; Application is extensive, can promote the use of in industries such as environmental protection dedusting (sack cleaner), waterworks, Sewage Plant, cement plant, power plant, copper work, down-hole, chemical plant, oil plant, paper mill, pharmaceutical factory, food factories.

Description of drawings

Fig. 1 is the opening sketch map of spool 5 in first kind of structure of the utility model.

Fig. 2 is the closed condition sketch map of spool 5 in first kind of structure of the utility model.

Fig. 3 is the opening sketch map of spool 5 in second kind of structure of the utility model.

Fig. 4 is the closed condition sketch map of spool 5 in second kind of structure of the utility model.

Fig. 5 is that piston cylinder is the pneumatic schematic diagram of cylinder in the utility model.

Among the figure: the first valve port flange 1, flange seal circle 2, valve core seal ring 3, valve body 4, spool 5, sealing ring 6; Valve seals 7, sealing ring inner seal ring 8, piston 9, the second valve port flanges 10, nut 11, fluid inlet and outlet 12; Cylinder body 13, connecting plate 14, magnetic valve 15, source of the gas 16, muffler 17.

The specific embodiment

Below in conjunction with the description of drawings and the specific embodiment the utility model is done further detailed explanation.

Referring to Fig. 1-Fig. 5, a kind of pulse valve of the utility model comprises valve body; Spool, spool action actuating mechanism and magnetic valve 15, described valve body and spool are the valve body 4 and spool 5 of piston valve; Described spool action actuating mechanism is a piston cylinder, and piston cylinder comprises cylinder body 13 and the piston rod 9 that stretches out cylinder body 13 outsides, and described piston rod 9 stretches into the core bar of valve body 4 inside as spool 5; Described spool 5 is fixed on the flexible end of piston rod 9; Described valve body 4 is fixedly connected with cylinder body 13, and described magnetic valve 15 is fixed on cylinder body 13 or the valve body 4, and two external mouths of pipe on the magnetic valve 15 are connected with two fluid inlet and outlets 12 on the cylinder body 13 through pipeline.

Referring to Fig. 1 to Fig. 4, described piston valve is piston type angle valve or straight-through valve, and described valve body 4 is basic identical with the valve body and the spool of piston valve with spool 5; Fig. 1; What valve body 4 adopted among Fig. 2 is the valve body of piston straight-through valve, Fig. 3, and what valve body 4 adopted among Fig. 4 is the valve body of piston angle valve.Described spool 5 adopts metal material to process; As can adopt steel to process, the longitudinal section of spool 4 is a groove body, is provided with through hole in the bottom centre of groove body; In the through hole that piston rod 9 on the piston cylinder inserts on the groove body, with nut 11 spool 5 is fixed on the piston rod 9 again.Be provided with the duct of matching in the described valve body 4 with spool 5.Spool 5 can stretch in the duct in the valve body 4, in order to increase sealing effectiveness, preferably in described duct, is provided with valve core seal ring 3.Described valve core seal ring 3 is the U RunddichtringO, can spool 5 be sealed from the both direction that gets into or withdraw from the duct.Described valve core seal ring 3 also can adopt yx type, flower bud type or square RunddichtringO.

Spool 4 entering ducts and valve core seal ring 3 can also make the end of said spool 5 be provided with the taper chamfering for ease.Be about to the tapered structure of Front-end Design of spool 4, the diameter before the pyramidal structure of its front end should be compressed less than valve core seal ring 3.

The another kind of closing form of spool 5 in valve body 4 is that correspondence is provided with the duct of diameter less than spool 5 end face diameters in the described valve body 4 in the utility model; The position in said duct is arranged in the stroke of spool 5 motions, and the end face of said spool 5 is provided with elaxtic seal.Described elaxtic seal can be mounted in the materials such as rubber blanket on spool 5 end faces.This form is basic identical with the end mode of piston valve core in the existing piston valve in valve body.But as the pulse valve in the sack cleaner time, the diameter in said duct can not be provided with too little, heaps near the duct to avoid dust.

Fig. 1, among Fig. 2, described valve body 4 is tightly connected through cylinder body 13 ends of sealing ring 6 with piston rod 9 one sides.Be provided with sealing ring inner seal ring 8 between the mating surface of sealing ring 6 and cylinder body 13, be provided with valve seals 7 between the contact-making surface of sealing ring 6 and valve body 4 endoporus, described valve seals 7 is the O RunddichtringO.

Fig. 3, among Fig. 4, described valve body 4 cylinder body 13 ends direct and piston rod 9 one sides are tightly connected.Described valve body 4 is socketed on the cylinder body 4 of piston rod 9 exposed junctions, and valve body 4 is provided with valve seals 7 with the mating surface of cylinder body 4, and described valve seals 7 is the O RunddichtringO.

Corresponding two valve ports are respectively arranged with the first valve port flange 1 and the second valve port flange 10 on the described valve body 4; As can adopt bolt that the first valve port flange 1 and the second valve port flange 10 are separately fixed on two valve ports of valve body 4; Can valve body 4 and the joint face of the first valve port flange 1, the second valve port flange 10 be provided with flange seal circle 2; In case heads, described flange seal circle 2 is the O RunddichtringO.

Described piston cylinder is cylinder or hydraulic jack, and described magnetic valve 15 is a two-position four-way solenoid valve, also can adopt two five-way electromagnetic valves, three position four-way electromagnetic valve.Among Fig. 1-Fig. 4, magnetic valve 15 is fixed on the connecting plate 14, and connecting plate 14 is fixed on the cylinder body 13 of piston cylinder.Also can connecting plate 14 and magnetic valve 15 be fixed on the valve body 4 of piston valve as required.

Referring to Fig. 5; When piston cylinder adopts cylinder; When magnetic valve 15 adopts two-position four-way solenoid valve; A gas port of magnetic valve 15 connects source of the gas 16, and another gas port connects gas storehouse or atmosphere through muffler 17, and in addition two external gas ports of magnetic valve 15 are connected with two fluid inlet and outlets 12 (rod chamber gas port and rodless cavity gas port) on the piston-cylinder cylinder body 13 through pipeline respectively.

The pneumatic operation principle of the utility model is following:

When magnetic valve 15 is positioned at position, a left side; Spool 5 in corresponding diagram 1 and Fig. 3 state is in opening; Source of the gas 16 leads to the rod chamber gas port of piston-cylinder through magnetic valve 15; The pressure of cylinder rod chamber is greater than the pressure of rodless cavity, and the piston rod 9 in the piston-cylinder moves to right to low order end, and the gas in the rodless cavity is arranged to atmosphere from muffler 17 through magnetic valve 15.

When magnetic valve 15 is positioned at right position; Spool 5 in corresponding diagram 2 and Fig. 4 state is in closed condition; Source of the gas 16 leads to the rodless cavity gas port of piston-cylinder through magnetic valve 15; The pressure of cylinder rodless cavity is greater than the pressure of rod chamber, and the piston rod 9 in the piston-cylinder moves to left to high order end, and the gas in the rod chamber is arranged to atmosphere from muffler 17 through magnetic valve 15.

The piston cylinder of the utility model adopts the hermetically-sealed construction of hydraulic cylinder, and valve body 4 and spool 5 adopt steel parts, so its withstand voltage rank is high, and the pressure through medium can reach 3.15MPa; Can control the stroke of driving oil cylinder when driving through servo amplifier if adopt servo-cylinder (oil cylinder of band position sensor); Through setting the opening size control arbitrarily that can realize spool 5; And then realize flow-control through piston valve; Promptly can be used for timing gearing system, realize arbitrary speed control by flow output decision; The auto-switch function of piston valve also can be realized time switch control by control program, is used for automation is had the operating mode occasion of requirement.

Claims

1. pulse valve; Comprise valve body, spool, spool action actuating mechanism and magnetic valve (15); It is characterized in that: described valve body and spool are the valve body (4) and the spool (5) of piston valve; Described spool action actuating mechanism is a piston cylinder, and piston cylinder comprises cylinder body (13) and stretch out the outside piston rod (9) of cylinder body (13) that described piston rod (9) stretches into the inner core bar as spool (5) of valve body (4); Described spool (5) is fixed on the flexible end of piston rod (9); Described valve body (4) is fixedly connected with cylinder body (13), and described magnetic valve (15) is fixed on cylinder body (13) or the valve body (4), and two external mouths of pipe on the magnetic valve (15) are connected with two fluid inlet and outlets (12) on the cylinder body (13) through pipeline.

2. a kind of pulse valve according to claim 1 is characterized in that: described spool (5) adopts metal material to process, and is provided with the duct of matching with spool (5) in the described valve body (4).

3. a kind of pulse valve according to claim 2 is characterized in that: be provided with valve core seal ring (3) in the described duct, the end of said spool (5) is provided with the taper chamfering.

4. a kind of pulse valve according to claim 3 is characterized in that: described valve core seal ring (3) is the U RunddichtringO.

5. a kind of pulse valve according to claim 1 is characterized in that: be provided with the duct of diameter less than spool (5) end face diameter in the described valve body (4), the end face of said spool (5) is provided with elaxtic seal.

6. a kind of pulse valve according to claim 1; It is characterized in that: described valve body (4) is gone up corresponding two valve ports and is respectively arranged with the first valve port flange (1) and the second valve port flange (10), and the joint face of valve body (4) and the first valve port flange (1), the second valve port flange (10) is provided with flange seal circle (2).

7. a kind of pulse valve according to claim 6 is characterized in that: described flange seal circle (2) is the O RunddichtringO.

8. a kind of pulse valve according to claim 1 is characterized in that: described valve body (4) is socketed on the cylinder body (4) of piston rod (9) exposed junction, and valve body (4) is provided with valve seals (7) with the mating surface of cylinder body (4).

9. a kind of pulse valve according to claim 8 is characterized in that: described valve seals (7) is the O RunddichtringO.

10. a kind of pulse valve according to claim 1 is characterized in that: described piston valve is piston type angle valve or straight-through valve, and piston cylinder is cylinder or hydraulic jack, and described magnetic valve (15) is a two-position four-way solenoid valve.