CN103498963A

CN103498963A - Strainer valve

Info

Publication number: CN103498963A
Application number: CN201310513714.8A
Authority: CN
Inventors: 卓旦春
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-25
Filing date: 2013-10-25
Publication date: 2014-01-08
Anticipated expiration: 2033-10-25
Also published as: CN103498963B

Abstract

The invention provides a strainer valve, and belongs to the technical field of machines. The strainer valve solves the problems that an existing strainer valve cannot filter off impurities completely and a filter screen is broken easily. The strainer valve comprises a valve body, wherein a cavity is formed inside the valve body; the left end and the right end of the valve body are a water inlet end and a water outlet end respectively; a filtration spring which is perpendicular to the waterflow direction and a membrane located above the filtration spring are fixed in the valve body; a stressed part is fixed at the bottom of the membrane; the two ends of the filtration spring abut against the inner wall of the stressed part and the inner wall of the valve body respectively; the membrane partitions the valve body off into a control cavity and a filtration cavity, wherein the filtration cavity is communicated with the water inlet end and the water outlet end of the valve body; a pressure guide connecting pipe communicated with the control cavity is further connected to the side portion at the upper end of the valve body. The strainer valve has the advantages that the filtration effect is good and the filtration function is not affected by changes in hydraulic pressure.

Description

A kind of filter tap

Technical field

The invention belongs to field of mechanical technique, relate to a kind of filter tap.

Background technique

Filter tap claims again filter; it is a kind of pretreated device that filtered; it is the indispensable a kind of device of tubing of fed sheet of a media; it is installed on the entrance point of the equipment such as irrigation control valve, reduction valve, Valve for keeping constant water level usually; be used for eliminating the impurity in medium; prevent graininess impurity inlet passage, with the accessory on the protection equipment pipe, avoid wearing and tearing and stop up.

Filter tap is widely used in industrial production and daily life, and using at present the most general filter tap is the inner filter tap that adopts filter net type, at the body cavity of filter tap, one deck filter screen is set impurity is filtered.As Chinese patent discloses a kind of filter tap [application number: 201020300385.0; Notification number: CN201599489U], it comprises valve body, there is a blow down branch communicated with body cavity on valve body, be provided with one and cross filter core in blow down branch, be provided with a valve gap that pressed filter core in the port of blow down branch, have a sewage draining exit on valve gap, the sewage draining exit place is provided with a Sealing.This filter tap utilized filter core to be filtered medium, and can carry out easily blowdown and be cleaned crossing filter core by Sealing is taken off.

The mistake filter core used in above-mentioned filter tap is identical with traditional filter tap, is all the filter screen of plane type, and part therefore comes with some shortcomings.At first, the filter area of filter screen is little, and on filter screen, the size of each mesh is identical, size to impurity while therefore filtering just has requirement, the impurity particle that the mesh of volume ratio filter screen is large can be filtered, the impurity that volume is less than the filter screen mesh can not be filtered, so use value is not high.In addition, when velocity of medium is very fast, impurity can cause larger impact to the filter screen surface, and makes because filter screen generally adopts steel wire, after so long-time shock, filter screen easily deforms and loses filtering effect, often changes filter screen and can cause the waste of resource again.

Summary of the invention

The objective of the invention is the problems referred to above that exist for prior art, proposed the filter tap that a kind of good filtration effect and filtering function are not affected by variation in water pressure.

Purpose of the present invention can realize by following technical proposal: a kind of filter tap, comprise that inner is the valve body of cavity, the two ends, left and right of described valve body are respectively feed-water end and waterexit end, it is characterized in that, be fixed with the filtration spring perpendicular with water (flow) direction in described valve body and be positioned at the diaphragm that filters the spring top, described diaphragm bottom is fixed with stressed member, the two ends of described filtration spring lean respectively on the inwall of stressed member and valve body, described diaphragm is separated into control chamber and filtering cavity by valve body, described filtering cavity is connected with feed-water end and the waterexit end of valve body, described valve body upper end sidepiece also is connected with the pilot communicated with control chamber and takes over.

When practical application, the valve body of filter tap is arranged in controlled pipe-line system, and the end that pilot is taken over is connected with controlled pipe-line system front end.When assembling, the quantity of the filtration spring in the filter tap valve body can be set according to the size of impurity, utilize the compression clearance of filter tap to be filtered impurity, the filtration spring of some quantity can form the filtration of multilayer stereo formula, not only improved well filtering effect, and, so long service life not yielding owing to filtering spring.

In addition, when intake pressure becomes large, because the pilot adapter is connected with controlled pipe-line system front end, therefore the pressure of taking in the control chamber that can make valve body by pilot increases, under the effect of hydraulic pressure, making diaphragm drive stressed member overcomes the elastic force effect of filtering spring and moves down, stressed member filters spring to lower compression, filter spring compressed and cause gap smaller, thereby make the impurity in water to pass through, so just guaranteed to filter spring and still can effectively be filtered when hydraulic pressure changes.

In above-mentioned filter tap, described valve body upper end is fixed with the lower positioning seat communicated with body cavity, the upper positioning seat that has been threaded on described lower positioning seat, the edge of described diaphragm is clamped between positioning seat and lower positioning seat and forms above-mentioned control chamber between diaphragm and upper positioning seat.The upper and lower positioning seat mutually be threaded is connected to the valve body upper end, just the edge of diaphragm can be clamped by cooperatively interacting of upper and lower positioning seat like this.

In above-mentioned filter tap, there is annular positioning groove on described lower positioning seat, the edge bottom of described diaphragm has the annular flange flange matched with annular positioning groove.The annular flange flange of the edge bottom by diaphragm and the annular positioning groove on lower positioning seat cooperatively interact, and diaphragm edge can be fixed between upper and lower positioning seat better.

In above-mentioned filter tap, be fixed with the connecting rod perpendicular with water (flow) direction in described valve body, the upper end of described connecting rod is arranged with baffle plate one and its lower end is fixed with baffle plate two, have respectively mutual positioning hole one and positioning hole two over against arranging on the face that described baffle plate one and baffle plate two face, the two ends of described filtration spring are individually fixed in positioning hole one and positioning hole two.Utilize positioning hole one on baffle plate one and baffle plate two and positioning hole two will filter spring and be fixed in valve body, this spline filter spring just is not easy to be subject to the impact of current pressure change.

In above-mentioned filter tap, described stressed member comprises the Regulation spring that is arranged at the adjustable lever between baffle plate one and diaphragm and is sheathed on the adjustable lever lower end, the two ends of Regulation spring lean respectively on baffle plate one and adjustable lever, on adjustable lever, stretch between positioning seat and lower positioning seat, the adjustable lever upper end is fixed in the center of described diaphragm, described adjustable lever lower end has the attachment hole that internal diameter is greater than the small end external diameter, and the upper end of described connecting rod is stretched in the attachment hole of adjustable lever lower end.

When intake pressure becomes large, the elastic force effect that diaphragm drive adjustable lever overcomes Regulation spring downwards moves down, the adjustable lever lower end applies downforce to baffle plate one, because baffle plate one is sheathed on connecting rod, and small end stretches in the attachment hole of adjustable lever lower end, therefore when adjustable lever presses down, baffle plate one moves downward and compresses the filtration spring along small end, thereby makes the gap smaller of filtering spring.

In above-mentioned filter tap, the center of described diaphragm is sheathed on the adjustable lever upper end, described adjustable lever upper end also is arranged with clamping panel and lower clamping panel and diaphragm between upper clamping panel and lower clamping panel, the described adjustable lever upper end locking nut that also has been threaded, described locking nut is resisted against on clamping panel.

When mounted, by lower clamping panel, diaphragm and upper clamping panel, be set in successively on adjustable lever, then locking nut is screwed from the upper end of adjustable lever, thereby locking nut presses down upper clamping panel finally make the center of diaphragm to be clamped between upper clamping panel and lower clamping panel.

In above-mentioned filter tap, as another kind of situation, described stressed member is the stressed plate that is connected in the diaphragm bottom, and described baffle plate one leans the base plate at stressed plate under the elastic force effect of filtering spring.

In above-mentioned filter tap, described upper positioning seat sidepiece offers pilot port, and described pilot is taken over and is threadedly connected to the place, pilot port.

In use, pilot is taken over for linking with the pipeline of controlled pipe-line system front end, when the water in pipeline flows into the filtering cavity in the filter tap valve body, a part can be taken over and flow in the control chamber of valve body through pilot, when the flow velocity of current becomes large, the pressure in filtering cavity increases, thereby diaphragm moves down to lower compression filtration spring, filter spring compressed after its gap smaller, thereby make impurity be difficult to by.

In above-mentioned filter tap, described valve body lower end is opening-like and be fixed with base at opening, and the port of described valve body lower end has the gear edge, and described baffle plate two is between gear edge and base, and described baffle plate one leans with the inwall of valve body.Utilize gear along with base, baffle plate two being fixed, position shelf just can be fixed in valve body like this.

In above-mentioned filter tap, described described positioning hole two runs through and is arranged on baffle plate two, and the bottom of described base has cavity, between described base and valve body lower end, is provided with seal ring, the bottom centre place of the described base blowdown valve that has been threaded.

Positioning hole two runs through and is arranged on baffle plate two, impurity after the spring filtration can be in positioning hole two be deposited to the cavity of base so after filtration, after blowdown valve is opened, just the impurity be deposited in base can be discharged, the seal ring between valve body and base can prevent from producing leakage between the two.

In above-mentioned filter tap, be provided with Returnning spring between described adjustable lever upper end and upper positioning seat, shrink respectively between locking nut and upper positioning seat inboard at the two ends of described Returnning spring.Returnning spring, for reset response, after the pressure in the pilot chamber restores balance, resets diaphragm under the effect of Returnning spring.

Compared with prior art, this filter tap has the following advantages:

1, the compression clearance amount of this filter tap utilization filtration spring is filtered magazine, if the filtration spring of individual quantity forms the filtration of multilayer stereo formula in valve body, has not only increased filter area, and has improved filtering effect;

2, this filter tap utilizes pilot adapter and diaphragm to be engaged in when intake pressure changes and can automatically adjust the decrement of filtering spring, and while guaranteeing high flow rate, impurity also can't pass through, and use value is higher, and Applicable scope is wider;

3, the quantity of the filtration spring of this filter tap can be set according to the size that is filtered impurity, good filtration effect not only, and also it is not yielding to filter spring, and long service life and not fragile, can guarantee long normal operation.

The accompanying drawing explanation

Fig. 1 is the sectional view of this filter tap.

Fig. 2 is the structural representation between positioning seat and upper positioning seat under this filter tap.

Fig. 3 is the structural representation of position shelf in this filter tap.

In figure, 1, valve body; 2, feed-water end; 3, waterexit end; 4, filter spring; 5, diaphragm; 6, control chamber; 7, filtering cavity; 8, lower positioning seat; 9, upper positioning seat; 10, annular positioning groove; 11, annular flange flange; 12, connecting rod; 13, baffle plate one; 14, baffle plate two; 15, positioning hole one; 16, positioning hole two; 17, adjustable lever; 18, Regulation spring; 19, attachment hole; 20, upper clamping panel; 21, lower clamping panel; 22, locking nut; 23, pilot is taken over; 24, base; 25, seal ring; 26, blowdown valve; 27, Returnning spring.

Embodiment

Be below specific embodiments of the invention by reference to the accompanying drawings, technological scheme of the present invention is further described, but the present invention be not limited to these embodiments.

Embodiment one

As shown in figures 1 and 3, a kind of filter tap, comprise that inner is the valve body 1 of cavity, the two ends, left and right of valve body 1 are respectively feed-water end 2 and waterexit end 3, be fixed with the connecting rod perpendicular with water (flow) direction 12 in valve body 1, the lower end that the upper end of connecting rod 12 is arranged with baffle plate 1 and connecting rod 12 is fixed with baffle plate 2 14, is connected with some filtration springs 4 between baffle plate 1 and baffle plate 2 14, and the two ends of filtration spring 4 lean respectively on baffle plate 1 and baffle plate 2 14.On baffle plate 1 face relative with baffle plate 2 14, have respectively mutually over against the positioning hole 1 and the positioning hole 2 16 that arrange, the two ends of filtering spring 4 are individually fixed in positioning hole 1 and positioning hole 2 16.

As depicted in figs. 1 and 2, be fixed with diaphragm 5 in valve body 1, diaphragm 5 is separated into control chamber 6 and filtering cavity 7 by valve body 1, and filtering cavity 7 is connected with feed-water end 2 and the waterexit end 3 of valve body 1.Valve body 1 upper end is fixed with the lower positioning seat 8 communicated with valve body 1 inner chamber, there is annular positioning groove 10 on lower positioning seat 8, the edge bottom of diaphragm 5 has the annular flange flange 11 matched with annular positioning groove 10, the upper positioning seat 9 that has been threaded on lower positioning seat 8, the edge of diaphragm 5 is clamped between positioning seat 9 and lower positioning seat 8 and formation control chamber 6 between diaphragm 5 and upper positioning seat 9.Also be provided with the pilot all communicated with controlled pipe-line system front end and control chamber 6 on valve body 1 and take over 23, upper positioning seat 9 sidepieces offer pilot port, and pilot is taken over 23 and is threadedly connected to the place, pilot port.

Diaphragm 5 bottoms are fixed with stressed member, stressed member comprises the Regulation spring 18 that is arranged at the adjustable lever 17 between baffle plate 1 and diaphragm 5 and is sheathed on adjustable lever 17 lower ends, adjustable lever 17 middle parts have the shoulder block of protrusion, and the two ends of Regulation spring 18 lean respectively on the shoulder block of baffle plate 1 and adjustable lever 17.Adjustable lever 17 upper ends are stretched between positioning seat 9 and lower positioning seat 8, and adjustable lever 17 lower ends have the attachment hole 19 that internal diameter is greater than connecting rod 12 upper end external diameters, and connecting rod 12 upper ends are stretched in attachment hole 19.

The center of diaphragm 5 is sheathed on adjustable lever 17 upper ends, adjustable lever 17 upper ends also are arranged with clamping panel 20 and lower clamping panel 21 and diaphragm 5 between upper clamping panel 20 and lower clamping panel 21, the adjustable lever 17 upper end portions locking nut 22 that has been threaded, locking nut 22 is resisted against on clamping panel 20.Be provided with Returnning spring 27 between adjustable lever 17 upper ends and upper positioning seat 9, shrink respectively between locking nut 22 and upper positioning seat 9 inboards at the two ends of Returnning spring 27.

Valve body 1 lower end is opening-like and be fixed with base 24 at opening, between base 24 and valve body 1 lower end, is provided with seal ring 25, and the port of valve body 1 lower end has the gear edge, and baffle plate 2 14 is between gear edge and base 24, and baffle plate 1 leans with the inwall of valve body 1.Positioning hole 2 16 runs through and is arranged on baffle plate 2 14, and the bottom of base 24 has cavity, and the blowdown valve 26 that has been threaded at the bottom centre place of base 24.

During installation, the valve body 1 of this filter tap is installed in controlled pipe-line system, and pilot port and the controlled pipe-line system front end that will be arranged at positioning seat 9 sidepieces link.The utilization of this filter tap is fixed between the compression of the some filtration springs 4 in valve body 1 impurity in current is filtered, filtering the quantity of spring 4 can be changed according to the size of impurity in current, each filters spring 4 and forms multi-level three-dimensional filtration, can be well by contaminant filter, and impurity sedimentation after filtering is behind valve body 1 bottom, by opening blowdown valve 26, can in time impurity be discharged, avoid impurities accumulation too much to affect filtering function.

In order to adapt to the change of intake pressure in controlled pipe-line system, this filter tap has also possessed and can automatically according to intake pressure, change and change the function of filtering spring 4 decrements.Its detailed process is such: during water inlet, water can enter into through the feed-water end 2 of valve body 1 in filtering cavity 7, simultaneously also some water can be taken over 23 through pilot and enters in control chamber 6, when intake pressure becomes large, hydraulic pressure in control chamber 6 also correspondingly increases, now hydraulic pressure will force diaphragm 5 to overcome the elastic force effect of Regulation spring 185 and move down, downward press filtration spring 4 when diaphragm 5 moves down, thereby filter the compressed gap smaller that makes of spring 4, be blended in so impurity in high flow rate and just can be filtered well spring 4 and stop and can't pass through.

Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various modifications or supplement or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.

Claims

1. a filter tap, comprise that inside is the valve body of cavity (1), the two ends, left and right of described valve body (1) are respectively feed-water end (2) and waterexit end (3), it is characterized in that, be fixed with the filtration spring (4) perpendicular with water (flow) direction in described valve body (1) and be positioned at the diaphragm (5) that filters spring (4) top, described diaphragm (5) bottom is fixed with stressed member, the two ends of described filtration spring (4) lean respectively on the inwall of stressed member and valve body (1), described diaphragm (5) is separated into control chamber (6) and filtering cavity (7) by valve body (1), described filtering cavity (7) is connected with feed-water end (2) and waterexit end (3) of valve body (1), described valve body (1) upper end sidepiece also is connected with the pilot communicated with control chamber (6) and takes over (23).

2. filter tap according to claim 1, it is characterized in that, described valve body (1) upper end is fixed with the lower positioning seat (8) communicated with valve body (1) inner chamber, the upper positioning seat (9) that has been threaded on described lower positioning seat (8), the edge of described diaphragm (5) is clamped between positioning seat (9) and lower positioning seat (8) and forms above-mentioned control chamber (6) between diaphragm (5) and upper positioning seat (9).

3. filter tap according to claim 2, is characterized in that, has annular positioning groove (10) on described lower positioning seat (8), and the edge bottom of described diaphragm (5) has the annular flange flange (11) matched with annular positioning groove (10).

4. according to claim 1 or 2 or 3 described filter taps, it is characterized in that, be fixed with the connecting rod perpendicular with water (flow) direction (12) in described valve body (1), the upper end of described connecting rod (12) is arranged with baffle plate one (13) and its lower end is fixed with baffle plate two (14), have respectively mutual positioning hole one (15) and positioning hole two (16) over against arranging on the face that described baffle plate one (13) and baffle plate two (14) face, the two ends of described filtration spring (4) are individually fixed in positioning hole one (15) and positioning hole two (16).

5. filter tap according to claim 4, it is characterized in that, described stressed member comprises the Regulation spring (18) that is arranged at the adjustable lever (17) between baffle plate one (13) and diaphragm (5) and is sheathed on adjustable lever (17) lower end, the two ends of Regulation spring (18) lean respectively on baffle plate one (13) and adjustable lever (17), on adjustable lever (17), stretch between positioning seat (9) and lower positioning seat (8), adjustable lever (17) upper end is fixed in the center of described diaphragm (5), described adjustable lever (17) lower end has the attachment hole (19) that internal diameter is greater than connecting rod (12) upper end external diameter, the upper end of described connecting rod (12) is stretched in the attachment hole (19) of adjustable lever (17) lower end.

6. filter tap according to claim 5, it is characterized in that, the center of described diaphragm (5) is sheathed on adjustable lever (17) upper end, described adjustable lever (17) upper end also is arranged with clamping panel (20) and lower clamping panel (21) and diaphragm (5) and is positioned between clamping panel (20) and lower clamping panel (21), described adjustable lever (17) the upper end locking nut (22) that also has been threaded, described locking nut (22) is resisted against on clamping panel (20).

7. filter tap according to claim 2, is characterized in that, described upper positioning seat (9) sidepiece offers pilot port, and described pilot is taken over (23) and is threadedly connected to the place, pilot port.

8. filter tap according to claim 4, it is characterized in that, described valve body (1) lower end is opening-like and be fixed with base (24) at opening, the port of described valve body (1) lower end has the gear edge, described baffle plate two (14) is positioned between gear edge and base (24), and described baffle plate one (13) leans with the inwall of valve body (1).

9. filter tap according to claim 8, it is characterized in that, described positioning hole two (16) runs through and is arranged on baffle plate two (14), the bottom of described base (24) has cavity, be provided with seal ring (25) between described base (24) and valve body (1) lower end, the bottom centre of described base (24) locates to be threaded blowdown valve (26).

10. filter tap according to claim 5, it is characterized in that, be provided with Returnning spring (27) between described adjustable lever (17) upper end and upper positioning seat (9), shrink respectively between locking nut (22) and upper positioning seat (9) inboard at the two ends of described Returnning spring (27).