CN208474590U - Split type double float valve farmland low-pressure pipe irrigation hydrants - Google Patents

Abstract

The utility model discloses a kind of split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants, it is made of lower bolt and upper bolt two parts, a plurality of correcting slide bar is vertically arranged on lower bolt inner wall, it is loosely engaged with the correcting sliding slot on the outside of main float valve, main float valve is designed in oblate spheroid shape, there is a central passage in centre, and time float valve is equipped in central passage；Card slot is equipped at the top of the main float valve and time float valve, sealing rubber ring is installed, the sealing face of sealing rubber ring is equipped with several ring seal line, the y-type seal ring of sealing seam allowance jacking is equipped at the top of lower bolt in card slot, on lower bolt inner wall, the top of y-type seal ring is equipped with lower bolt teeth；Upper bolt is made of jacking mechanism and water output duct tube coupling and water delivery elbow three parts, and the lateral wall of upper bolt is equipped with upper bolt teeth.The utility model has the characteristics that tightness, fastness, stability, and it is a kind of ideal split type double float valve farmland low-pressure pipe irrigation hydrants that use is laborsaving, conveniently.

Description

Split type double float valve farmland low-pressure pipe irrigation hydrants

Technical field

The utility model relates to irrigation and water conservancy technical fields, more particularly to a kind of split type double float valve farmlands low pressure pipeline to fill Irrigate hydrant.

Background technique

Known, low pressure pipeline water-saving irrigation is the major way of China's farmland water-saving irrigation, and basic skills is to pass through ground Water source is led to farmland by lower pipeline, is then guided on the ground by hydrant, then be equipped with hose and irrigated.Hydrant is as farmland irrigating A kind of important component irrigate, essential structure are that water-supply-pipe is connected by underground threeway or elbow with standpipe road, are drawn through standpipe To on the ground, aerial part realizes water delivery purpose by stopping valve closing door and controlling water supply water delivery device to be connected with hose, its advantage is that Structure is simply easy to manufacture, and facilitates installation.Hydrant is many kinds of currently on the market, is divided by structure type fixed, partly solid Fixed pattern and movable type.Fixed waterstop sealing, control water supply are integrated, and there is also water supply entirety firmly to be combined with standpipe Together, it cannot dismantle, a set of control waterworks must be installed with a set of hydrant, invest the disadvantages of relatively large.It is semifixed Formula waterstop sealing, control water supply be integrated, connect generally by flange with standpipe, slack season dismantle, can rotation use, the disadvantage is that Installation is shut down before irrigating, time-consuming, laborious, not easy to operate, angle of water can not also adjust after installation.Mobile waterstop sealing In lower bolt, lower bolt is mounted under protecting field in protection well, and mobile upper bolt is seperated with lower bolt, can rotation use, Its advantage is that: investment reduction；Water discharging direction is adjustable；It does not need to shut down, automatic closing-water is realized in installation upper body water intaking, disassembly upper body.

But there is also some drawbacks for existing float-valve type farmland hydrant: having plenty of single float valve, floats support product greatly, do not cut off the water By reason of heavy pressure must be using screw rod rotation press float valve pressure release when operation, pressure leak process is comparatively laborious, difficult, and must borrow It helps external component to implement, influences pressure release efficiency；Though be double float valve, secondary float valve must be close by spring external force jacking It is bad to close effect, metal spring fatiguability, damage, high failure rate；Two cavity shells or flanged joint above and below all lower bolts, Screwed connection, process is tedious, and the work quality for especially fastening and sealing is not easy to control, is easy leak.

The utility model aim is to provide a kind of split type double float valve farmland low-pressure pipe irrigation hydrants, convenient for agricultural Production and facilities protection；The dedicated viscose of two cavity shells is bonded lower bolt up and down, is firmly combined, long service life；When operation, first Secondary valve body, rear main float valve be vented automatically, closed water body of intaking, when stopping operation with pressure reduction Auto-drainage, air inlet return from Right state, light and flexible, no mechanical breakdown can solve problems present in background technique.

Summary of the invention

In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of split type double float valve agricultures Field low-pressure pipe irrigation hydrant, is improved by structure, saves connection type up and down to solve the cavity of existing hydrant lower bolt It is unreasonable that pressure release difficulty when unstable quality of connection, use, metal fittings rapid wear, sealing element is caused not to have the design of sealing line to stop The drawbacks such as water is not tight.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

A kind of split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants, by lower bolt and upper bolt two parts group At the lower bolt is formed by saving on lower bolt with section bonding under lower bolt, and section is connect with external water supply riser under lower bolt； Connection type herein is that bonding either connects by one same material flange of increase bolt fastening corresponding with water supply riser flange It connects；It is vertically arranged with a plurality of correcting slide bar on the lower bolt inner wall, is loosely engaged with the correcting sliding slot on the outside of main float valve, limits Making main float valve can only slide along correcting slide bar up and down direction；The main float valve is designed in oblate spheroid shape, is equipped with a center among it Channel is equipped with time float valve in central passage；It is equipped with card slot at the top of the main float valve and time float valve, sealant is installed in card slot Circle, card slot limitation sealing ring misplace and fall off；The sealing rubber ring pre-manufactured, sealing face are equipped with several ring seal Line enhances closed water-stagnating effect；The function of the main float valve and time float valve is time float valve when supplying water, the automatic row of main float valve sequence Gas and sealing, sequence auto-admission and sluicing when cutting off the water supply；There is the y-type seal ring of sealing seam allowance jacking at the top of the lower bolt, The closed upper bolt gap suitable for reading with lower bolt, prevents leak during work；On lower bolt inner wall, the top of y-type seal ring Equipped with lower bolt teeth；On the upper bolt, by jacking mechanism and water output duct tube coupling and water delivery elbow three parts group Upper bolt teeth are equipped at the lateral wall of, upper bolt, and water delivery elbow is equipped with handle, and jacking mechanism is by secondary float valve top when use Into pressure release after a small amount of water being discharged, and then easily push main float valve, rotates by a certain angle and install upper bolt water delivery.

The secondary float valve is bonded up and down by two parts and is formed, cylindrical, back draught design, at the center of main float valve Buoyancy in channel by water body is slided up and down, is sealed；

Water inlet diameter specifications are saved under the lower bolt to be changed, and the needs of different water supply riser designs are matched.

Gap between the thickness and lower bolt teeth and y-type seal ring of the upper bolt teeth matches, upper bolt Inlet segment outer diameter matches with the internal diameter for saving top on lower bolt.

It is equipped between the main float valve and lower bolt shell and crosses hydrospace, main float valve diameter greater than upstream line section Greater than ring packing seam allowance diameter, the sealing ring at top supports rear hermetic seal；Particularly, the main float valve size will design Appropriately, match with lower bolt space size, guarantee has the cross-section of river not less than feedwater piping section, Jin Erbao between the two Demonstrate,prove water flow.

The main float valve central passage top export diameter is less than central passage internal diameter, and the sealing ring at the top of secondary float valve supports Hermetic seal behind top；Particularly, the central passage will be designed correctly with time float valve gap, be guaranteed logical at the center of main float valve Buoyancy in road by water body freely up and down slides and posture is vertical；When irrigating, feed pressure is sufficiently large, and secondary float valve leans on natural buoyancy To after the pressure relief opening of top only into and sealing guarantee there is certain water flowing water when connect the pressure release of upper bolt need of work.

The Y type sealing rubber ring is fixed by ring packing seam allowance, and internal diameter wraps up the water output duct tube coupling of upper bolt, real Now to the closed sealing effect of upper bolt.

The utility model is had the advantages that by designing above

1. lower bolt cavity ensure that tightness, the fastness, stability of component connection using segmented bonding design；

2. saving water inlet diameter specifications under lower bolt can change, the needs of different water supply riser designs, and water supply are adapted to Standpipe can be bonding, be also possible to by the bolt fastening connection corresponding with water supply riser flange of one same material flange of increase, Connection type is flexible, and use scope is wider；

3. the design of pair float valve, hydrant be vented automatically, intake when operation, and realization seals automatically under buoyancy, is not necessarily to External force, it is simple, reliable；

4. there is card slot at the top of main float valve and time float valve, the effect of card slot is ensure that close for stationary annular sealing rubber ring Sealing rubber ring is securely rectified, and does not misplace, not alice, does not fall off；

5. the sealing rubber ring sealing face of main float valve and time float valve is designed with the ring seal line of several protrusion, ensure that close The excellent results of apolipsis water；

6. since central passage tube wall is closed, smooth, water flow is smoothly without vortex phenomenon, and external form is consistent therewith for secondary float valve, It is slided under on the buoyancy of water body along central passage, it is smooth without being obstructed, it can guarantee that posture is vertical, sealing is tight；

7. since the utility model entirety all-plastic makes, corrosion-resistant without metal parts, anti-aging, failure rate is low, peace It is complete reliable；

8. handle of holding with a firm grip is directed at top pressure relief opening when needing to fetch water, secondary float valve is pushed using jacking mechanism, along secondary floating A small amount of water can be discharged in gap between valve and central passage, and upper bolt easily presses main float valve at this time, and upper bolt rotates one again Determine angle to be engaged using upper bolt teeth and lower bolt teeth, upper bolt and lower bolt can connect, pressure water by lower bolt into Enter water output duct tube coupling, and then is flowed out from water delivery elbow, realization irrigation water water delivery to ground, single stepping, then be not necessarily to it It is acted, and use is extremely laborsaving, conveniently, is a kind of ideal split type double float valve farmland low-pressure pipe irrigation hydrants.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the assembly stereoscopic schematic diagram of the utility model；

Fig. 2 is the lower bolt stereoscopic schematic diagram of the utility model；

Fig. 3 is the upper bolt stereoscopic schematic diagram of the utility model；

Fig. 4 is the assembly structure main view cut-away view of the utility model；

Fig. 5 be in Fig. 4 A to structure enlargement diagram；

Fig. 6 is the assembly schematic diagram of application structure of the utility model；

In figure, 1, lower bolt, 2, upper bolt, 3, handle, 4, save under lower bolt, 5, save on lower bolt, 6, sealing seam allowance, 7, Correcting slide bar, 8, lower bolt teeth, 9, jacking mechanism, 10, correcting sliding slot, 11, upper bolt teeth, 12, water output duct tube coupling, 13, water delivery elbow, 14, y-type seal ring, 15, central passage, 16, secondary float valve, 17, sealing rubber ring, 18, ring seal line, 19, Main float valve, 20, top pressure relief opening, 21, annulus anticreep card, 22, card slot, 23, external hose, 24, protective device, 25, water supply Standpipe.

Specific embodiment

A kind of split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants, by the independent separate structure group of two parts It closes, is respectively: lower bolt 1 and upper bolt 2.Two parts are vertically connected with use when work, as shown in Figure 1；Inoperative Period lower bolt 1 and upper bolt 2 are respectively independent, as shown in Figure 2 and Figure 3；

Protection is closed during 1 inoperative of lower bolt in protective device 24, by saving 5, lower bolt on lower bolt Section 4 by adhesive specially is bonded composition water guide space under body, under lower bolt section 4 by bonding connection water supply riser 25 into Water, section 5 is discharged by the upper bolt 2 that lower bolt teeth 8 connect hydrant on lower bolt, and main float valve 19 and time float valve are installed in inside 16；The major function for double float valves that the main float valve 19 and time float valve 16 combines is that secondary float valve 16, main float valve 19 are suitable when supplying water Sequence exhaust and sealing, sequence air inlet and sluicing when cutting off the water supply.

There is a plurality of correcting sliding slot 10 on the outside of the main float valve 19, what is be vertically arranged on loose occlusion 1 inner wall of lower bolt leads Positive slide bar 7, limiting main float valve 19 can only slide along 7 up and down direction of correcting slide bar.The main float valve 19 is designed in oblate spheroid shape, and It is made of upper and lower two parts bonding, meets water by buoyancy and rise automatic jacking sealing 6 sealing of seam allowance along correcting slide bar 7.Described Main 19 size of float valve will be designed correctly, and be matched with the water guide space size of lower bolt 1, and guarantee has between the two not less than water supply The cross-section of river of 25 section of standpipe.The main float valve 19 has a central passage 15 up and down, the top of central passage 15 The diameter of pressure relief opening 20 is less than the internal diameter of central passage 15, and time float valve 16 is equipped in central passage 15.

The secondary float valve 16 is bonded by two parts, cylindrical, and back draught design is bonded in 15 lower end of central passage and justifies Ring anticreep card 21 prevents time 16 off working state of float valve because Gravitational sliding falls off；Central passage 15 and time float valve 16, which are equipped with, to be suitble to Gap, guarantee that the buoyancy of time float valve 16 in central passage 15 by water body freely up and down slides and posture is vertical；When irrigation is given Water pressure is sufficiently large, secondary float valve 16 by natural buoyancy support top pressure relief opening 20 after only into and sealing.

There is the card slot 22 for being all equipped with different-diameter at the top of the main float valve 19 and time float valve 16, size therewith is installed respectively Matched sealing rubber ring 17；The effect of card slot 22 is fixing seal cushion rubber 18, limits its dislocation and falls off；The sealing rubber ring 17 are ring-shaped, and top surface is equipped with the ring seal line 18 of several protrusion, to guarantee closed water-stagnating effect；The sealant It is consistent with respective valve body outer diameter respectively to enclose 17 outer diameters, and is mounted in card slot 22, avoid fall off, alice the phenomenon that；And by Closed, smooth in 15 tube wall of central passage, water flow is smooth, without vortex phenomenon, make time float valve 16 slide it is smooth be not obstructed, lean on water body Buoyancy under slided along central passage 15, it is smooth without being obstructed, can guarantee that its posture is vertical, sealing is tight.

There are the y-type seal ring 14 of sealing 6 jacking of seam allowance, the internal diameter and upper bolt 2 of lower bolt 1 at the top of the lower bolt 1 Water output duct tube coupling 12 cooperate, the joint gap of closed upper bolt 2 and lower bolt 1 prevents leak during work.

The upper bolt 2, by the jacking mechanism 9 and water output duct tube coupling 12 of taper design and 13 3, water delivery elbow Be grouped as, there is handle 3 on water delivery elbow, when use hold with a firm grip handle 3 be directed at lower bolt top pressure relief opening 20 will using jacking mechanism 9 Secondary float valve 16 pushes, and a small amount of water can be discharged in the gap between secondary float valve 16 and central passage 15, due to top pressure relief opening 20 with 1 water guide cavity connection of lower bolt, thus hydraulic pressure declines rapidly in cavity, upper bolt 2 easily presses main float valve 19 at this time, upper bolt Body 2 is rotated by a certain angle again using upper bolt teeth 11 and the occlusion of lower bolt teeth 8, and upper bolt 2 and lower bolt 1 can connect, It is not necessarily to other operations again, pressure water flows out lower bolt 1 around the jacking mechanism 9 of taper design and enters water output duct tube coupling 12, and then enter from water delivery elbow 13 to external hose 23, irrigation water water delivery is realized to ground, and use is extremely laborsaving, conveniently.

The hydrant entirety all-plastic production, it is corrosion-resistant without metal parts, it is anti-aging, so failure rate is lower, It is more safe and reliable.It, can be with 360 degree accessible turn when being combined because of upper bolt 2 used in the utility model and lower bolt 1 again Dynamic, the water supply of applicable each angle is a kind of ideal split type double float valve farmland low-pressure pipe irrigation hydrants.

Claims (7)

1. a kind of split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants, by lower bolt and upper bolt two parts group At, it is characterised in that: the lower bolt is formed by saving on lower bolt with section bonding under lower bolt, and section is given with outside under lower bolt The connection of water standpipe；A plurality of correcting slide bar is vertically arranged on the lower bolt inner wall, it is wide with the correcting sliding slot on the outside of main float valve Pine occlusion；The main float valve is designed in oblate spheroid shape, and centre is equipped with a central passage, and time float valve is equipped in central passage； It is equipped with card slot at the top of the main float valve and time float valve, sealing rubber ring is installed in card slot；The sealing rubber ring pre-manufactured, stops The water surface is equipped with several ring seal line；The y-type seal ring of sealing seam allowance jacking is equipped at the top of the lower bolt；In lower bolt On inner wall, the top of y-type seal ring is equipped with lower bolt teeth；On the upper bolt, by jacking mechanism and water output duct Tube coupling and water delivery elbow three parts composition, the lateral wall of upper bolt are equipped with upper bolt teeth, have handle on water delivery elbow.

2. split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants as described in claim 1, it is characterised in that: described Secondary float valve by two parts up and down be bonded form, it is cylindrical, back draught design.

3. split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants as described in claim 1, it is characterised in that: described Lower bolt under section water inlet diameter specifications can change, match the needs of different water supply risers design.

4. split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants as described in claim 1, it is characterised in that: described Upper bolt teeth thickness and lower bolt teeth and y-type seal ring between gap match, upper bolt inlet segment outer diameter with The internal diameter that top is saved on lower bolt matches.

5. split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants as described in claim 1, it is characterised in that: described Main float valve and lower bolt shell between have and cross hydrospace greater than upstream line section, main float valve diameter stops greater than ring packing Mouth diameter；The main float valve size matches with lower bolt space size.

6. split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants as described in claim 1, it is characterised in that: described Main float valve central passage top export diameter be less than central passage internal diameter；The central passage and time float valve gap guarantees secondary Buoyancy of the float valve in central passage by water body freely up and down slides and posture is vertical.

7. split type double Automatic floating valve farmland low-pressure pipe irrigation hydrants as described in claim 1, it is characterised in that: described Y type sealing rubber ring fixed by ring packing seam allowance.