CN208816748U - A kind of micro one-way valve - Google Patents

Abstract

The utility model relates to a kind of micro one-way valves, including the first valve body and the second valve body being linked；One end of first valve body has the first valve port, and the other end has the first body；One end of second valve body has the second valve port, and the other end has the second body；Second body is inserted in inside first set body and seals fixation, and main channel is provided with the sphere and spring abutted against inside the first body and the second body；Second body is axially inside provided with the first stepped hole and the second stepped hole being connected；The aperture of second stepped hole is less than the aperture of the first stepped hole and the diameter of sphere；The peripheral wall of second body offers the strip groove of perforation peripheral wall surfaces externally and internally, and strip groove extends to the peripheral wall of the second stepped hole from the peripheral wall of the first stepped hole, and strip groove is greater than the diameter of sphere in the length of the inner peripheral portion of the first stepped hole.The utility model can avoid spring that improper deformation occurs, keep micro one-way valve relatively reliable durable to sphere to the sports limiting in spring one end direction.

Description

A kind of micro one-way valve

Technical field

The utility model relates to valve technology fields, and in particular to a kind of micro one-way valve.

Background technique

As ink jet numbering machine manufactures and designs increasingly to intelligent, smart smallization development, designing in the tiny spray head of ink jet numbering machine has More and more check valves.

Various check valves exist in the prior art, including the check valve using spring and spherical valve core, Its groundwork state includes closed state and open state, and closed state refers to that the reversed elastic force by spring of spherical valve core is made With and by check valve inner passage closing, open state refers to that the forward direction of spherical valve core is overcome the bullet of spring by external force pressure Power simultaneously opens the inner passage of check valve, that is, plays the role of positive unlatching, reversed closed one-way flow.

Usually not limit design between spherical valve core and spring in above-mentioned check valve, although spherical valve core can be in spring Movement in elastic limit, but easily lead to spring when the positive overstress of spherical valve core and the improper deformation such as be distorted, from And influence the service life of spring.

Therefore, the prior art requires further improvement and develops.

Utility model content

The purpose of this utility model is that disclosing a kind of more reliability and durability micro one-way valve.

A kind of micro one-way valve disclosed by the utility model, including the first valve body and the second valve body being linked；First valve One end of body has the first valve port, and the other end has the first body, and the inside of the first body is connected to the first valve port；Second valve body One end have the second valve port, the other end have the second body, the inside of the second body is connected to the second valve port；Second body set Enter inside first set body and seal fixation, and the inside of the first body is connected to form main channel with the inside of the second body；Institute It states main channel and is internally provided with the sphere and spring abutted against, make the sphere by the first valve port to the channel between the first body Enclosed elastic；Second body is axially inside provided with the first stepped hole and the second stepped hole being connected；Second ladder The aperture in hole is less than the aperture of the first stepped hole and the diameter of sphere；Spring one end is connected to inside the second stepped hole, spring The other end penetrates the first stepped hole and abuts with sphere；The peripheral wall of second body offers the item of perforation peripheral wall surfaces externally and internally Shape slot, the strip groove extends to the peripheral wall of the second stepped hole from the peripheral wall of the first stepped hole, and the strip groove is in the first rank The length of the inner peripheral portion in terraced hole is greater than the diameter of the sphere.

Further, second body is along axial including the first stepped part, second step ladder and closure portion；First ladder First stepped hole is set inside portion；Second stepped hole is set inside second step ladder；Closure portion sealing cover is located at institute Above the end for stating the first body.

Further, the outer diameter of first stepped part is less than the outer diameter of second step ladder, the second step ladder it is outer Diameter is less than the outer diameter of closure portion.

Further, the connection of the inner wall of the outer wall of the second step ladder and first body interference fit or screw thread connect It connects.

Further, the first sealing ring, institute are installed at the inner bottom surface that first body is connected to first valve port It states sphere and abutting is adapted to first sealing ring based on the elastic force of spring, by the first valve port to the channel between the first body Enclosed elastic.

Further, the gap between second body and the inner bottom surface of the first body is equal to or slightly less than described first The outer diameter of the line footpath of sealing ring, first sealing ring is equal to the path length of wall in first set body on its present position.

Further, a circle seal groove is offered between the second step ladder and the closure portion and to be equipped with second close The inner circumferential of seal, the second sealing ring is abutted with seal groove, and the periphery of the second sealing ring is abutted with the inner wall of the first body.

Further, it is equipped with the first connector of pagoda shape at first valve port, is equipped with pagoda at second valve port Second connector of shape.

Micro one-way valve disclosed by the utility model is provided with the first stepped hole and the second stepped hole, the hole of the second stepped hole Diameter is less than the aperture of the first stepped hole and the diameter of sphere, therefore the second stepped hole can be to sphere to the fortune in spring one end direction Dynamic limit the improper deformation such as is distorted to not easily lead to spring in sphere overstress, improves the use of spring Service life keeps micro one-way valve relatively reliable durable.

Detailed description of the invention

Fig. 1 is a kind of schematic perspective view of micro one-way valve disclosed in embodiment.

Fig. 2 is a kind of planar structure schematic diagram of micro one-way valve disclosed in embodiment.

Fig. 3 is the internal sectional structure schematic diagram of Fig. 2.

Fig. 4 is the internal sectional structure schematic diagram of the first valve body in Fig. 3.

Fig. 5 is the internal sectional structure schematic diagram of the second valve body in Fig. 3.

The B-B view of Fig. 6 Fig. 5.

Fig. 7 is the left view structure chart of Fig. 5.

The first valve body of 100-, the first valve port of 110-, the first body of 120-, the first connector of 130-, the second valve body of 200-, The second valve port of 210-, the second body of 220-, 221- strip groove, the first stepped hole of 222-, the second stepped hole of 223-, the first rank of 225- Terraced portion, 226- second step ladder, 227- closure portion, the second connector of 230-, 310- sphere, 320- spring, 330- first are sealed Circle, the second sealing ring of 340-.

Specific embodiment

In order to facilitate the understanding of those skilled in the art, below in conjunction with attached drawing and embodiment to the utility model carry out into The description of one step.

Please refer to Fig. 1 to Fig. 7, a kind of micro one-way valve disclosed in the present embodiment, including 100 He of the first valve body being linked Second valve body 200；As shown in figure 4, one end of the first valve body 100 has the first valve port 110, the other end has the first body 120, The inside of first body 120 is connected to the first valve port 110；As shown in figure 5, one end of the second valve body 200 has the second valve port 210, the other end has the second body 220, and the inside of the second body 220 is connected to the second valve port 210；As shown in figure 3, second set Body 220 is inserted in 120 inside of the first body and seals fixation, and the inside of the first body 120 is connected with the inside of the second body 220 It is logical to form main channel；The main channel is internally provided with the sphere 310 and spring 320 abutted against, makes sphere 310 by the first valve port Between 110 to the first bodies 120 channel elasticity closing (refer to sphere 310 under the action of elastic anchorage force by the channel enclosed, But overcome the elastic anchorage force or the power of another opposite direction that is subject to be greater than the elastic anchorage force after can open), second set Body 220 is axially inside provided with the first stepped hole 222 and the second stepped hole 223 being connected；The aperture of second stepped hole 223 Less than the aperture of the first stepped hole 222 and the diameter of sphere 310；320 one end of spring is connected to inside the second stepped hole 223, 320 other end of spring penetrates the first stepped hole 222 and abuts with sphere 310；The peripheral wall of second body 220 offers perforation peripheral wall The strip groove 221 (Fig. 5) of surfaces externally and internally, strip groove 221 extend to the second stepped hole 223 from the peripheral wall of the first stepped hole 222 Peripheral wall, and strip groove 221 is greater than the diameter of sphere 310 in the length of the inner peripheral portion of the first stepped hole 222.

Micro one-way valve disclosed in the present embodiment is due to being provided with the first stepped hole 222 and the second stepped hole 223, second-order The aperture in terraced hole 223 is less than the aperture of the first stepped hole 222 and the diameter of sphere 310, therefore the second stepped hole 223 can be to ball Body 310 is turned round to the sports limiting of 320 1 extreme direction of spring to not easily lead to spring 320 in 310 overstress of sphere The improper deformation such as song, improves the service life of spring 320, keeps micro one-way valve relatively reliable durable.Simultaneously as bar shaped Slot 221 extends to the peripheral wall of the second stepped hole 223 from the peripheral wall of the first stepped hole 222, when sphere 310 is pushed into and second by positive pressure When stepped hole 223 abuts, it is ensured that fluid can smoothly enter into 221 inside of strip groove and flow to second-order ladder hole 223 and the second valve Mouth 210.

In the further embodiment of the present embodiment, as shown in figure 5, the second body 220 is along axial including the first stepped part 225, second step ladder 226 and closure portion 227；First stepped hole 222 is set inside first stepped part 225；Second step ladder 226 The second stepped hole 223 of inside setting；227 sealing cover of closure portion is located above the end of the first body 120.Further, first The outer diameter of stepped part 225 is less than the outer diameter of second step ladder 226, and the outer diameter of second step ladder 226 is less than the outer of closure portion 227 Diameter.

In the present embodiment, the inner wall interference fit connection of the outer wall of second step ladder 226 and the first body 120 or screw thread connect It connects.This structure is with cooperation so that micro one-way valve is compact-sized, and volume can be made very small, simple process, convenient for a large amount of systems Make.For example, when the outer diameter that the diameter of sphere 310 is 2 millimeters of springs 320 simultaneously is less than 1.8 millimeters, micro one-way valve can be with Exquisiteness is more suitable for using in the equipment such as ink jet numbering machine to 5 × 12 millimeters or so.

In the further embodiment of the present embodiment, it is equipped at the inner bottom surface that the first body 120 is connected to the first valve port 110 First sealing ring 330, elastic force of the sphere 310 based on spring 320 are adapted to abutting with the first sealing ring 330, by the first valve port 110 To the channel elasticity closing between the first body 120.In the present embodiment, the inner bottom surface of the second body 220 and the first body 120 it Between gap be equal to or slightly less than the line footpath of the first sealing ring 330, the outer diameter of the first sealing ring 330 is equal on its present position the The path length of one body, 120 inner wall is not walked with guaranteeing that the first sealing ring 330 is located just at clearance space, and uniform force, first is close 330 anchor ring of seal and 310 sphere-contact of sphere are good.

In the further embodiment of the present embodiment, a circle seal groove is offered between second step ladder 226 and closure portion 227 And the second sealing ring 340 is installed, the inner circumferential of the second sealing ring 340 is abutted with seal groove, the periphery of the second sealing ring 340 and the The inner wall of one body 120 abuts.

In the further embodiment of the present embodiment, as shown in Figures 1 and 2, the first of pagoda shape is equipped at the first valve port 110 Connector 130 is equipped with the second connector 230 of pagoda shape at second valve port 210, to connect with pipelines such as hoses.

In the present embodiment, sphere 310 specifically can be stainless steel ball, and the first valve body 100 and the second valve body 200 can be not Become rusty the metal materials such as steel or brass, and the first sealing ring 330 and the second sealing ring 340 can use corrosion resistant rubber or plastic cement system At.

When in use, the first connector 130 and the second connector 230 are separately connected pipeline, are passed through from the first valve port 110 Fluid, when sphere 310 is greater than the elastic force of spring 320 by the positive pressure of fluid, sphere 310 will be open, and fluid will lead to It crosses strip groove 221 and passes through the second valve port 210 into the second stepped hole 224.Conversely, the first valve port 110 be not passed through fluid or When person's sphere 310 is less than the elastic force of spring 320 by the positive pressure of fluid, sphere 310 closes internal taper hole 121.To this reality The micro one-way valve for applying example can play positive unlatching, reversed closed one-way flow control action.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to In the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (8)

1. a kind of micro one-way valve, including the first valve body and the second valve body being linked；One end of first valve body has the first valve Mouthful, the other end has the first body, and the inside of the first body is connected to the first valve port；One end of second valve body has the second valve Mouthful, the other end has the second body, and the inside of the second body is connected to the second valve port；Second body is inserted in inside first set body simultaneously Sealing is fixed, and the inside of the first body is connected to form main channel with the inside of the second body；Setting inside the main channel There is the sphere and spring abutted against, closes the sphere by the first valve port to the channel elasticity between the first body；

It is characterized in that, second body is axially inside provided with the first stepped hole and the second stepped hole being connected；The The aperture of two stepped holes is less than the aperture of the first stepped hole and the diameter of sphere；Spring one end is connected in the second stepped hole Portion, the spring other end penetrate the first stepped hole and abut with sphere；The peripheral wall of second body offers inside and outside perforation peripheral wall The strip groove on surface, the strip groove extend to the peripheral wall of the second stepped hole, and the strip groove from the peripheral wall of the first stepped hole It is greater than the diameter of the sphere in the length of the inner peripheral portion of the first stepped hole.

2. micro one-way valve according to claim 1, it is characterised in that: second body is along axial including the first ladder Portion, second step ladder and closure portion；First stepped hole is set inside the first stepped part；Inside second step ladder described in setting Second stepped hole；Closure portion sealing cover is located above the end of first body.

3. micro one-way valve according to claim 2, it is characterised in that: the outer diameter of first stepped part is less than second-order The outer diameter in terraced portion, the outer diameter of the second step ladder are less than the outer diameter of closure portion.

4. micro one-way valve according to claim 3, it is characterised in that: the outer wall of the second step ladder and described first The inner wall interference fit connection of body is threadedly coupled.

5. according to the described in any item micro one-way valves of claim 2-4, it is characterised in that: first body and described first The first sealing ring is installed at the inner bottom surface of valve port connection, the sphere is adapted to based on the elastic force of spring with first sealing ring It abuts, the first valve port to the channel elasticity between the first body is closed.

6. micro one-way valve according to claim 5, it is characterised in that: the inner bottom surface of second body and the first body Between gap be equal to or slightly less than the line footpath of first sealing ring, the outer diameter of first sealing ring is equal to its present position The path length of wall in upper first set body.

7. micro one-way valve according to claim 6, it is characterised in that: between the second step ladder and the closure portion It offers a circle seal groove and the second sealing ring is installed, the inner circumferential of the second sealing ring is abutted with seal groove, the second sealing ring Periphery is abutted with the inner wall of the first body.

8. micro one-way valve according to claim 7, it is characterised in that: be equipped with the first of pagoda shape at first valve port Connector is equipped with the second connector of pagoda shape at second valve port.