CN107202182A

CN107202182A - Check valve

Info

Publication number: CN107202182A
Application number: CN201710663311.XA
Authority: CN
Inventors: 杨树林; 杨旗
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-08-05
Filing date: 2017-08-05
Publication date: 2017-09-26
Anticipated expiration: 2037-08-05
Also published as: CN107202182B

Abstract

The present invention relates to check valve, the unidirectional water supply of multi-functional Irrigation and fertilization system can effectively be solved and corrosion resistance is strong, air-tightness is good, the problem of lifting column can smoothly be withdrawn, technical scheme is, including valve body and the valve element being arranged in valve body, valve body includes the water inlet pipe and outlet pipe linked together, the water hole of the two inner chamber of connection is provided between water inlet pipe and outlet pipe, valve element includes the guide sleeve being fixed in outlet pipe and is sleeved in guide sleeve to be slidingly sealed body, described guide sleeve is provided centrally with skidway hole, the oral area of skidway hole is just right with water hole, it is set with skidway hole and is slidingly sealed body, the upper oral part of skidway hole is stretched out on the top for being slidingly sealed body, extension is slidingly sealed body covering water hole and together with being brought into close contact with the inwall of water hole, constitute sealing structure, hemispherical elastomer of the present invention is good, and fin is separated with water hole, sealing that also can be good containing the similar impurity such as the grains of sand in liquid, it is easy to use, effect is good.

Description

Check valve

Technical field

The present invention relates to check valve, particularly a kind of check valve for multi-functional Irrigation and fertilization system.

Background technology

Agricultural is the important basic industry of China, in field irrigation and fertilising, and traditional method is artificial progress, time-consuming Arduously, efficiency is low；Using advanced facility and technology, it is me to turn to large automatic production by the Production of Large Fields of " living at the mercy of the elements " The direction of state's agricultural development, in the market also occur in that it is many irrigate and fertilising equipment, but the problem of be due in its structure, The cost of equipment is high, and function is few, it is impossible to which above and below ground is freely haunted, and equipment cloth postpones influence other procedures, using rising Come inconvenient, effect is unsatisfactory, therefore, and applicant has applied for the " many of Application No. " 201320400678.X " a few days ago The structure of function Irrigation and fertilization system ", wherein spraying mechanism is the rotary nozzle structure by telescoping tube and mounted in telescoping tube upper end Into telescoping tube is that, by the different circular hollow tube of more piece diameter, a upper section is compressed in next section, equipped with sealing between every two section Enclose the Telescopic sealed structure constituted；In use, telescoping tube stretches out from ground end, water is transported to rotary nozzle out of telescoping tube, from Rotary nozzle sprays, and reaches the purpose of irrigation, the problem of wherein rotary nozzle is due in its structure, and using effect is undesirable, Shen Supporting multiple products are applied for again after asking someone：Such as Application No. " 201320826515.8 " and " 201420601534.5 " A kind of " the latent ground formula rotary nozzle ", good " rotation spray for multi-functional irrigation system for " 201520491941.X " of application Head ", " lifting column for being used for multi-functional Irrigation and fertilization system " of Application No. " 201520209803.8 ", Application No. " lifting column of sealing lift " of " 201610482114.3 " etc. series of products, these products are all that applicant was using The improvement done in journey according to actual use situation, its purpose is provided to enable lifting column to be risen in water spray, then after cutting off the water again It can be withdrawn under suction function, a check valve is provided between lifting column and rotary nozzle, if using existing unidirectional The check valve of valve, such as compressed spring type, because it uses metal to be made, it is impossible to used in the corrosive liquids such as soda acid；Dead-weight is close Envelope can only be used vertically, equally applicable narrow range because there is metal weights；Bead is sealed, to hemisphere and bead technological requirement Very high, cost is high, can only vertically use, and liquid can not the impurity containing grains of sand class.Such as using ball as sealing, such as Although fruit can be anticorrosive, in the ball of production, because of unconquerable technological problemses, sealing effectiveness is poor, such as Fig. 1 institutes Show, the ball sealer of rubber bonds the lug, nib 2a of the two between episphere 1a and lower semisphere 1b in production in the presence of one, this When individual lug, nib 2a is contacted with the water hole of valve body, there is gap, so that air-tightness can not be ensured, cause when lifting column is used without Method makes its automatic decline under negative pressure, and this problem is to be difficult to overcome in current production technology, therefore, is irrigated for multi-functional The improvement and innovation of the check valve of fertilization system are imperative.

The content of the invention

For above-mentioned situation, to overcome the defect of prior art, the purpose of the present invention is just to provide a kind of check valve, can had Effect solves the unidirectional water supply of multi-functional Irrigation and fertilization system and corrosion resistance is strong, and air-tightness is good, the problem of lifting column can smoothly be withdrawn.

The technical scheme that the present invention is solved is：

A kind of check valve, including valve body and the valve element being arranged in valve body, valve body include water inlet pipe and the water outlet linked together Pipe, is provided with the water hole of the two inner chamber of connection between water inlet pipe and outlet pipe, valve element includes the guiding being fixed in outlet pipe The body that is slidingly sealed for covering and being sleeved in guide sleeve, described guide sleeve is provided centrally with skidway hole, the oral area and mistake of skidway hole Water hole is just right, is set with skidway hole and is slidingly sealed body, and the upper oral part of skidway hole, extension are stretched out in the top for being slidingly sealed body Be slidingly sealed body covering water hole and together with being brought into close contact with the inwall of water hole, constitute sealing structure, be slidingly sealed body Bottom be placed in skidway hole and slid axially along it, be slidingly sealed between the bottom of body and skidway hole bottom and be provided with for multiple The elastic of position, the permeable hole with outlet pipe intracavity inter-connection is provided with the side wall of guide sleeve, when be slidingly sealed the top of body by When intaking the pressure in direction to water inlet pipe edge, body is slidingly sealed along skidway hole slide downward, the top of body is slidingly sealed with crossing water Hole is separated, and the gap of the two constitutes water passage, during pressure releases, under the resilient force of elastic, is slidingly sealed body Reset, its top covers water hole and together with being brought into close contact with the inwall of water hole again, constitute and unidirectional cross water-bound.

Described be slidingly sealed body and elastic is made of silica gel or rubber.

The described body that is slidingly sealed is the integrative-structure being made up of the hemisphere on top and the cylinder of bottom, water hole Inwall is in the arc surfaced corresponding with hemisphere outer wall.

Covered with screen pack on described permeable hole.

Described guide sleeve includes bottom plate and the lead being distributed on bottom plate, and the inner side of lead constitutes skidway hole, two Gap between two leads is constituted on permeable hole, permeable hole covered with screen pack.

Described being slidingly sealed on body is provided with fin, and fin is separated with water hole.

Structure novel and unique of the present invention, advantages of simple, easily production, cost is low, acid-alkali-corrosive-resisting, good sealing effect, cost Low, long lifespan, hemispherical elastomer is good, and fin is separated with water hole, also can be good containing the similar impurity such as the grains of sand in liquid Sealing, be slidingly sealed the flexible post of body tail end, promotion is slidingly sealed body advance, therefore the sealing of this check valve is not by conducting oneself with dignity, energy Installed in different directions, angle, it is applied widely, the lifting column of multi-functional Irrigation and fertilization system is particularly suitable for use in, it is easy to use, Effect is good, there is good social and economic benefit.

Brief description of the drawings

Fig. 1 is the structural representation for the ball sealer that existing check valve rubber is made.

Fig. 2 is sectional view of the invention.

Fig. 3 is the front view of guide sleeve of the present invention.

Fig. 4 is slidingly sealed the front view of body for the present invention.

Fig. 5 is the sectional view of valve body of the present invention.

Fig. 6 is the top view of guide sleeve of the present invention.

Fig. 7 is the top view of guide sleeve of the present invention（Do not install and be slidingly sealed body）.

Fig. 8, Fig. 9 are the structural representation of two kinds of water hole of the present invention not be the same as Example.

Embodiment

The embodiment of the present invention is described in further detail below in conjunction with accompanying drawing.

Provided by Fig. 1-9, the present invention includes valve body and the valve element being arranged in valve body, valve body includes entering for linking together Water pipe 3a and outlet pipe 3b, is provided with the water hole 4 of the two inner chamber of connection between water inlet pipe 3a and outlet pipe 3b, valve element includes solid The guide sleeve that is scheduled in outlet pipe 3b and it is sleeved in guide sleeve and is slidingly sealed body 5, described guide sleeve is provided centrally with sliding Road hole 9, the oral area of skidway hole 9 is just right with water hole 4, is set with skidway hole 9 and is slidingly sealed body, the top for being slidingly sealed body is stretched Go out the upper oral part of skidway hole 9, the body that is slidingly sealed of extension covers water hole and is fitted tightly over the inwall 4a of water hole 4 Together, sealing structure is constituted, the bottom of body is slidingly sealed and is placed in skidway hole 9 and is slid axially along it, be slidingly sealed the bottom of body It is provided with the elastic 13 for reset, the side wall of guide sleeve and is provided with and outlet pipe 3b inner chambers between portion and the bottom of skidway hole 9 The permeable hole 7 being connected, when the top for being slidingly sealed body is intake the pressure in direction by water inlet pipe 3a edges, is slidingly sealed body edge Skidway hole slide downward, the top and water hole 4 for being slidingly sealed body is separated, and the gap of the two constitutes water passage, pressure solution Except when, under the resilient force of elastic 13, be slidingly sealed body reset, its top cover again water hole and with water hole 4 Inwall 4a be brought into close contact together, constitute it is unidirectional cross water-bound.

To ensure using effect, described be slidingly sealed body and elastic 13 is made of silica gel or rubber；

The described body that is slidingly sealed is the integrative-structure being made up of the hemisphere 5a on top and the cylinder 5b of bottom, water hole 4 Inwall 4a be in the arc surfaced corresponding with hemisphere outer wall.

Covered with screen pack 8 on described permeable hole 7.

Described guide sleeve includes bottom plate 10 and the lead 12 being distributed on bottom plate 10, and the inner side of lead 12, which is constituted, to be slided Road hole 9, two-by-two gap between lead constitute on permeable hole 7, permeable hole 7 covered with screen pack 8.The top of lead 12 is set Have and adapter sleeve 11 is set with outwardly directed convex edge 6, outlet pipe 3b, convex edge 6 is pressed on outlet pipe 3b inner chambers by adapter sleeve In upper end wall, sealing structure is constituted, water is all discharged to by screen pack in outlet pipe while playing the effect of fixed guide set.

Described check valve is arranged on the water inlet end of the rotary nozzle of multi-functional Irrigation and fertilization system, its direction direction of intaking The water inlet end of rotary nozzle.

Described being slidingly sealed on body is provided with fin 2b, and fin 2b is separated with water hole 4.

The inwall 4a shapes of described water hole 4 are corresponding with the top for being slidingly sealed body, such as could be arranged to arc surfaced （As shown in Figure 5）, it is step-like（As shown in Figure 8）, yi word pattern（As shown in Figure 9）, by practical application, the sealing effectiveness of arc is most It is good.

The present invention is in use, water inlet pipe 3a is connected with the water side of the lifting column of multi-functional Irrigation and fertilization system, water outlet Pipe 3b is connected with the water inlet end of the rotary nozzle of multi-functional Irrigation and fertilization system, when being slidingly sealed the top of body by water inlet pipe 3a During the pressure in edge water inlet direction, body is slidingly sealed along skidway hole slide downward, top and the phase point of water hole 4 of body is slidingly sealed From, the gap of the two constitutes water passage, during pressure releases, under the resilient force of elastic 13, is slidingly sealed body reset, Its top covers water hole and together with being brought into close contact with the inwall 4a of water hole 4 again, due to being slidingly sealed body to be by upper The integrative-structure that the hemisphere 5a in portion and the cylinder 5b of bottom are constituted, and fin 2b between hemisphere 5a and cylinder 5b with Water hole 4 is separated, therefore will not be with the inwall joint of water hole 4, so as to ensure that the air-tightness after its sealing, it is ensured that rise Drop post can smoothly be withdrawn under negative pressure.Compared with prior art, the structure of the invention by changing valve element, it is ensured that check valve Corrosion resistance and sealing state under absolutely gas-tight, it is ensured that the lifting column of multi-functional Irrigation and fertilization system is fully retracted, Its structure novel and unique, advantages of simple, easily production, cost is low, and good airproof performance, energy-saving and water-saving, shrinkage is strong, retraction speed It hurry up, acid-alkali-corrosive-resisting, low cost, long lifespan, hemispherical elastomer is good, and fin is separated with water hole, and grains of sand etc. are contained in liquid Similar impurity also can be good sealing, be slidingly sealed the flexible post of body tail end, promotion is slidingly sealed body advance, therefore this is unidirectional Valve sealing can be installed not by deadweight in different directions, angle, applied widely, be particularly suitable for use in multi-functional Irrigation and fertilization system Lifting column, easy to use, effect is good, there is good social and economic benefit.

Applicant is it is noted that a kind of above-mentioned only embodiment pointed out of the application, is not meant to limit this Shen Protection domain please, it is every to be made and technical scheme substantially identical technical side with equivalent or equivalent substitute means Case belongs to the protection domain of the application.

Claims

1. a kind of check valve, including valve body and the valve element being arranged in valve body, it is characterised in that valve body includes what is linked together Water inlet pipe（3a）And outlet pipe（3b）, water inlet pipe（3a）And outlet pipe（3b）Between be provided with the water hole of the two inner chamber of connection （4）, valve element is including being fixed on outlet pipe（3b）Interior guide sleeve and it is sleeved in guide sleeve and is slidingly sealed body（5）, it is described Guide sleeve is provided centrally with skidway hole（9）, skidway hole（9）Oral area and water hole（4）It is just right, skidway hole（9）Inside it is set with cunning Skidway hole is stretched out on dynamic sealing body, the top for being slidingly sealed body（9）Upper oral part, extension be slidingly sealed body covering water hole And and water hole（4）Inwall（4a）It is brought into close contact together, constitutes sealing structure, the bottom for being slidingly sealed body is placed in skidway hole （9）It is interior and slid axially along it, it is slidingly sealed bottom and the skidway hole of body（9）The elastic for reset is provided between bottom （13）, it is provided with and outlet pipe on the side wall of guide sleeve（3b）The permeable hole of intracavity inter-connection（7）, when be slidingly sealed the top of body by To water inlet pipe（3a）Along water inlet direction pressure when, be slidingly sealed body along skidway hole slide downward, be slidingly sealed the top of body with Water hole（4）It is separated, the gap of the two constitutes water passage, during pressure releases, in elastic（13）Resilient force under, Body reset is slidingly sealed, its top covers water hole and and water hole again（4）Inwall（4a）It is brought into close contact together, constitutes It is unidirectional to cross water-bound.

2. check valve according to claim 1, it is characterised in that described is slidingly sealed body and elastic（13）Use Silica gel or rubber are made.

3. check valve according to claim 1, it is characterised in that the described body that is slidingly sealed is the hemisphere by top （5a）With the cylinder of bottom（5b）The integrative-structure of composition, water hole（4）Inwall（4a）In corresponding with hemisphere outer wall Arc surfaced.

4. check valve according to claim 1, it is characterised in that described permeable hole（7）On covered with screen pack（8）.

5. check valve according to claim 1, it is characterised in that described guide sleeve includes bottom plate（10）Be distributed on bottom Plate（10）On lead（12）, lead（12）Inner side constitute skidway hole（9）, two-by-two gap between lead constitute saturating Water hole（7）, permeable hole（7）On covered with screen pack（8）.

6. check valve according to claim 1, it is characterised in that described check valve is arranged on multi-functional fertigation system The water inlet end of the rotary nozzle of system, its water inlet end of direction towards rotary nozzle of intaking.

7. check valve according to claim 1, it is characterised in that described being slidingly sealed on body is provided with fin（2b）, Fin（2b）With water hole（4）It is separated.