CN216200855U - One-way valve - Google Patents

Abstract

The utility model discloses a one-way valve which comprises a one-way valve body, a pressing device, a one-way valve plate and a one-way valve seat, wherein the pressing device is inserted into the one-way valve body, the pressing device is used for connecting the one-way valve body with the one-way valve plate, the bottom of the one-way valve plate is provided with a spring, the one-way valve seat is provided with a second groove, the spring and the one-way valve plate are arranged in the second groove, the one-way valve body is provided with a first positioning hole, the one-way valve seat is provided with a second positioning hole, the one-way valve body is fixed with the one-way valve seat through screws, air inlet holes are formed in the periphery of the one-way valve body, and the upper half part of the pressing device exceeds the upper surface of the one-way valve body; the utility model is particularly suitable for being mounted on an unpowered suction cup so as to match the suction and the deflation of the connected closed chambers.

Description

One-way valve

Technical Field

The utility model relates to the technical field of mechanical devices, in particular to a one-way valve.

Background

The one-way valve is a valve which is very common in the society at present and controls the one-way movement of fluid, but is suitable for a suction and lifting device, particularly an unpowered suction and lifting device, and a corresponding suitable device does not exist at present. Therefore, designing a check valve suitable for the unpowered suction cup, which can be matched with the air inlet and outlet of a certain cavity of the unpowered suction cup is a difficult problem to be solved by a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a check valve to solve the above problems of the prior art.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a check valve, includes check valve body, presses the device, check valve plate and one-way disk seat, check valve body center department is equipped with first recess, press the device to insert in the first recess, press the device and be used for pressing the check valve plate, check valve plate overall structure is bilayer structure, and bilayer structure is big-end-up small-size, be equipped with the second recess in the one-way disk seat, the inside spring that is provided with of second recess, the spring top is provided with the check valve plate, check valve body and check valve seat fixed connection.

Further, press the device to include that first press the post and the second presses the post, first press the post to insert the centre of a circle of first recess, first recess top is equipped with the through-hole, first recess runs through check valve body, the diameter of through-hole with first press post looks adaptation, the second presses post fixed connection first press the post, the second is pressed the post and is used for when first press the post upward movement, the card check valve body, under the normal condition, first press the post to surpass check valve body's upper surface plays and presses the effect, the second presses the post to surpass check valve body's lower surface, in order to connect check valve plate.

Furthermore, the check valve body comprises positioning grooves and air inlets, the positioning grooves are arranged in number according to actual requirements, and a plurality of positioning grooves are distributed at equal intervals to ensure the stability of the device, the positioning grooves are arranged on the outermost circumference of the check valve body, the positioning grooves are cylindrical structures and are open grooves, first positioning holes are correspondingly arranged in the positioning grooves, the number of the first positioning holes is the same as that of the positioning grooves, the first positioning holes are positioned at the bottoms of the positioning grooves, the first positioning longitudinal holes penetrate through the check valve body and are cylindrical positioning holes, the first positioning holes connect the check valve body with the check valve seat through fixing screws, the air inlets are arranged on the side surface of the check valve body, the air inlets are cylindrical air inlets, and the first air inlets are transversely communicated and connected with the first air inlets, the air inlet holes and the positioning grooves are distributed in a staggered mode, the number of the air inlet holes is set according to actual needs, and the air inlet holes are used for air to enter and exit.

Furthermore, the check valve plate includes first valve plate and second valve plate, the upper surface circumference of first valve plate is equipped with the slope, the slope makes the check valve plate with check valve body area of contact reduces, and pressure increases, and the effect is obvious, first valve plate centre of a circle department is equipped with the draw-in groove, the draw-in groove salient in the lower surface of first valve plate, the draw-in groove embedding is connected press the device, makes the check valve body with the seamless contact of check valve plate, the second valve plate is fixed in the lower bottom surface of first valve plate, the lower surface of second valve plate is the real surface, the dead surface area of second valve is less than first valve plate.

Furthermore, the one-way valve seat comprises an air inlet and a second positioning hole, the air inlet is arranged at the bottom of the one-way valve seat, the air inlet at the bottom is used for connecting an airtight cavity of the sucker, the second groove is arranged in the middle of the one-way valve seat, the diameter of the second groove is matched with that of the first valve plate, the second positioning hole is arranged at the joint of the second groove and the one-way valve seat, and the second positioning hole is fixedly connected with the one-way valve body, so that the one-way valve body and the one-way valve seat form a tightly-closed detachable one-way valve structure.

Furthermore, the spring is a spring with the inner diameter gradually increasing from top to bottom, the inner diameter of the upper surface of the spring is matched with the second valve plate, the upper surface of the spring limits the second valve plate, the spring can be compressed on the same plane, so that when the one-way valve plate moves downwards to the bottommost part, the volume of the spring cannot influence air pressure, and the one-way valve plate has high stability, the spring is vertically placed in the second groove in a small size, and can automatically bounce under the action of external force extrusion after being loosened.

Furthermore, a silica gel pad is installed at the lower bottom of the check valve body, the silica gel pad is located between the first groove and the first positioning hole, the silica gel pad is in a ring shape, and the silica gel pad is in contact with the slope, so that the slope is in contact with the check valve body more compactly, impact force is reduced, and damage to components is avoided.

Further, the check valve body with be equipped with ring shape sealing washer between the check valve plate, ring shape sealing washer is the foaming type material of silica gel, ring shape sealing washer's internal diameter is less than the diameter of first valve plate, ring shape sealing washer's external diameter is greater than the diameter of second recess, just ring shape sealing washer does not cover the second locating hole works as the check valve body with when the check valve seat is fixed, ring shape sealing washer hugs closely the check valve seat, and with the check valve seat constitutes sealed cavity.

Compared with the prior art, the utility model has the following beneficial effects: the utility model provides a detachable one-way valve which can be assembled on an unpowered suction disc and is communicated with a closed cavity formed at the upper end of the unpowered suction disc, the one-way valve is in a closed state in a natural state, compressed air is formed in the closed cavity at the upper end when a piston of the unpowered suction disc moves upwards, the one-way valve is in a closed state so as to provide a buffer effect for the upward movement of the piston, the internal pressure intensity of the closed cavity at the upper end is gradually reduced when the piston of the unpowered suction disc moves downwards, a critical point is generated along with the continuous reduction of the internal pressure intensity, namely when the internal pressure intensity reaches a certain critical value, the lower pressure of the one-way valve plate is equal to the upper part, when the internal pressure intensity is less than the critical value, the lower pressure of the one-way valve plate is less than the upper part, the one-way valve plate is separated from a silica gel pad arranged at the lower part of the one-way valve body to generate a gap, and air continuously flows in from the gap so as to realize one-way air intake, the check valve is in the open mode, constantly inhales the air to for the piston downstream provides a cushioning effect, press the device and press and can manually open the check valve, thereby make airtight cavity and outside intercommunication, make things convenient for the gas business turn over, it is more nimble convenient to operate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a one-way valve of the present invention;

FIG. 2 is a plan view of a check valve of the present invention;

FIG. 3 is a top view of a check valve body of a check valve of the present invention;

FIG. 4 is a top view of a check valve plate of a check valve of the present invention;

FIG. 5 is a top view of a one-way valve seat of a one-way valve of the present invention;

FIG. 6 is a bottom view of a check valve body of a check valve of the present invention;

fig. 7 is a view showing a compressed spring according to the present invention.

In the figure: 1. a check valve body; 2. positioning a groove; 3. an air inlet; 4. a pressing device; 5. a first pressing column; 6. a second pressing column; 7. a first positioning hole; 8. a second positioning hole; 9. a one-way valve plate; 10. a spring; 11. a one-way valve seat; 12. a first valve plate; 13. a second valve plate; 14. a card slot; 15. a slope surface; 16. an air inlet; 17. a first groove; 18. a second groove; 19. a silica gel pad; 20. a circular ring-shaped sealing ring; 21. and a through hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides the following technical solutions: the utility model provides a check valve, including check valve body 1, press device 4, check valve plate 9 and one- way disk seat 11, 1 center department of check valve body is equipped with first recess 17, press device 4 to insert in first recess 17, check valve plate 9 is connected with check valve body 1 through pressing device 4, check valve plate 9 overall structure is bilayer structure, and bilayer structure is big-end-up small-size, be equipped with second recess 18 in the one-way disk seat 11, the inside spring 10 that is provided with of second recess 18, be provided with check valve plate 9 above the spring 10, check valve plate 9 and 11 fixed connection of one-way disk seat.

The pressing device 4 comprises a first pressing column 5 and a second pressing column 6, the first pressing column 5 is inserted into the center of the first groove 17, a through hole 21 is formed in the top of the first groove 17, the first groove 17 penetrates through the one-way valve body 1, the diameter of the through hole 21 is matched with that of the first pressing column 5, the second pressing column 6 is fixedly connected with the first pressing column 5, the second pressing column 6 is used for clamping the one-way valve body 1 when the first pressing column 5 moves upwards, the pressing device 4 can move up and down in the first groove 17, the first pressing column 5 exceeds the upper surface of the one-way valve body 1 in a normal state to play a pressing role, and the second pressing column 6 exceeds the lower surface of the one-way valve body 1 to be connected with the one-way valve plate 9.

The check valve body 1 comprises positioning grooves 2 and air inlet holes 3, the positioning grooves 2 are arranged in number according to actual requirements, and a plurality of positioning grooves 2 are distributed at equal intervals to ensure the stability of devices, the positioning grooves 2 are arranged on the outermost circumference of the check valve body 1, the positioning grooves 2 are of a cylindrical structure, the positioning grooves 2 are open grooves, first positioning holes 7 are correspondingly arranged in the positioning grooves 2, the number of the first positioning holes 7 is the same as that of the positioning grooves 2, the first positioning holes 7 are positioned at the bottoms of the positioning grooves 2, the first positioning holes 7 longitudinally penetrate through the check valve body 1, the first positioning holes 7 are cylindrical positioning holes, the first positioning holes 7 connect the check valve body 1 with a check valve seat 11 through fixing screws, the air inlet holes 3 are arranged on the side surface of the check valve body 1, the air inlet holes 3 are cylindrical 3, the air inlet holes 3 are transversely communicated with first air inlet holes 17, and the air inlet holes 3 are distributed in a staggered manner with the positioning grooves 2, the number of the air inlet holes 3 is set according to actual needs, and the air inlet holes 3 are used for air to enter and exit.

Check valve plate 9 includes first valve plate 12 and second valve plate 13, the upper surface circumference of first valve plate 12 is equipped with slope 15, slope 15 makes check valve plate 9 and 1 area of contact of check valve body reduce, the pressure increases, also play the cushioning effect simultaneously, the effect is obvious, first valve plate 12 centre of a circle department is equipped with draw-in groove 14, draw-in groove 14 is protruding in the lower surface of first valve plate 12, press device 4 is connected in the embedding of draw-in groove 14, make check valve body 1 and check valve plate 9 seamless contact, second valve plate 13 is fixed in the lower bottom surface of first valve plate 12, the lower surface of second valve plate 13 is the real surface, the bottom surface area of second valve plate 13 is less than first valve plate 12.

The one-way valve seat 11 comprises an air inlet 16 and a second positioning hole 8, the air inlet 16 is arranged at the bottom of the one-way valve seat 11, the air inlet 16 is used for connecting a closed cavity of the sucker, a second groove 18 is arranged in the middle of the one-way valve seat 11, the diameter of the second groove 18 is matched with that of the first valve plate 12, the second positioning hole 8 is arranged at the joint of the second groove 18 and the one-way valve seat 11, the second positioning hole 8 is connected and fixed with the one-way valve body 1, and the one-way valve body 1 and the one-way valve seat 11 form a closed detachable one-way valve structure.

Spring 10 is the spring 10 of internal diameter from the top down crescent, the internal diameter and the second valve plate 13 phase-match of the upper surface of spring 10, the upper surface of spring 10 is spacing to second valve plate 13, spring 10 can compress at the coplanar, make one-way valve plate 9 during downstream to the bottommost, spring 10 self volume can not exert an influence to atmospheric pressure, and have stronger stability, spring 10 erects and places in second recess 18, the spring can bounce automatically after loosening under the extruded effect of external force.

The lower bottom of the check valve body 1 is provided with the silica gel pad 19, the silica gel pad 19 is positioned between the first groove 17 and the first positioning hole 7, the silica gel pad 19 is in a ring shape, and the silica gel pad 19 contacts the slope surface 15, so that the slope surface 15 is in contact with the check valve body 1 more tightly, the impact force is reduced, and the damage of components is avoided.

Be equipped with ring shape sealing washer 20 between check valve body 1 and the check valve plate 9, ring shape sealing washer 20 is the foaming type material of silica gel, and ring shape sealing washer 20's internal diameter is less than the diameter of first valve plate 12, and ring shape sealing washer 20's external diameter is greater than the diameter of second recess 18, and ring shape sealing washer 20 does not cover second locating hole 8, when check valve body and check valve seat 11 are fixed, one-way valve seat 11 is hugged closely to ring shape sealing washer 20, and constitutes sealed cavity with check valve seat 11.

The working principle of the utility model is as follows: the utility model can be arranged on the unpowered suction cup and is communicated with a closed cavity at the upper part of the unpowered suction cup; in a natural state, when the internal and external atmospheric pressures are the same, the spring 10 presses the one-way valve plate 9 on a silica gel pad 19 arranged at the lower bottom of the one-way valve body 1, the pressure at the lower part of the one-way valve plate 9 is greater than that at the upper part, and the one-way valve is in a closed state; the pressure intensity of the closed chamber can be changed continuously along with the movement of the unpowered sucker piston, when the internal pressure intensity is greater than the atmospheric pressure, the pressure of the lower part of the one-way valve plate 9 is greater than that of the upper part, and the one-way valve is in a closed state; when the internal pressure is gradually reduced from the atmospheric pressure, a critical point is generated along with the continuous reduction of the internal pressure, namely when the internal pressure reaches a certain critical value, the lower pressure of the one-way valve plate 9 is equal to the upper part, when the internal pressure is smaller than the critical value, the lower pressure of the one-way valve plate 9 is smaller than the upper part, the one-way valve plate 9 is separated from a silica gel pad 19 arranged at the lower bottom of the one-way valve body 1 to generate a gap, and air continuously flows in from the gap to realize one-way air inlet; the manual pressing device 4 can also realize the separation of the one-way valve plate 9 and a silica gel pad 19 arranged at the lower bottom of the one-way valve body 1 to generate a gap, thereby more conveniently controlling the opening and closing of the one-way valve.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a check valve, its characterized in that, includes check valve body (1), presses device (4), check valve plate (9) and one-way disk seat (11), check valve body (1) center department is equipped with first recess (17), press device (4) to insert in first recess (17), check valve plate (9) overall structure is bilayer structure, and bilayer structure is big-end-up small-size, press device (4) and be used for pressing check valve plate (9), be equipped with second recess (18) in one-way disk seat (11), second recess (18) inside is provided with spring (10), spring (10) top is provided with check valve plate (9), check valve body (1) and one-way disk seat (11) fixed connection.

2. A one-way valve according to claim 1, wherein: according to device (4) including first according to post (5) and second according to moving post (6), first according to moving post (5) insert the centre of a circle of first recess (17), first recess (17) top is equipped with through-hole (21), first recess (17) run through check valve body (1), the diameter of through-hole (21) with first according to moving post (5) looks adaptation, second is according to moving post (6) fixed connection first according to moving post (5), under the normal condition, first according to moving post (5) surpass the upper surface of check valve body (1), the shaft that second was according to moving post (6) surpasss check valve body (1) lower surface.

3. A one-way valve according to claim 1, wherein: the check valve body (1) comprises a positioning groove (2) and an air inlet hole (3), the positioning groove (2) is arranged on the outermost circumference of the check valve body (1), the positioning groove (2) is of a cylindrical structure, the positioning groove (2) is an open groove, a first positioning hole (7) is correspondingly arranged in the positioning groove (2), the first positioning hole (7) is positioned at the bottom of the positioning groove (2), the first positioning hole (7) penetrates through the check valve body (1), the first positioning hole (7) is a cylindrical positioning hole, the first positioning hole (7) connects the check valve body (1) and the check valve seat (11) through a fixing screw, the air inlet hole (3) is arranged on the side surface of the check valve body (1), the air inlet hole (3) is a cylindrical air inlet hole, and the air inlet hole (3) is transversely communicated with the first groove (17), the air inlet holes (3) and the positioning grooves (2) are distributed in a staggered mode.

4. A one-way valve according to claim 3, wherein: check valve plate (9) include first valve plate (12) and second valve plate (13), the upper surface circumference of first valve plate (12) is equipped with slope (15), first valve plate (12) centre of a circle department is equipped with draw-in groove (14), draw-in groove (14) protruding in the lower surface of first valve plate (12), draw-in groove (14) embedding is connected press device (4), second valve plate (13) are fixed in the lower bottom surface of first valve plate (12), the lower surface of second valve plate (13) is the real surface, the bottom surface area of second valve plate (13) is less than first valve plate (12).

5. A check valve as claimed in claim 4, wherein: one-way valve seat (11) include air inlet (16) and second locating hole (8), air inlet (16) set up the bottom of one-way valve seat (11), an airtight cavity of sucking disc is connected in air inlet (16), second recess (18) set up the middle part of one-way valve seat (11), the diameter of second recess (18) with the diameter of first valve plate (12) matches each other, second recess (18) with the junction of one-way valve seat (11) is equipped with second locating hole (8), second locating hole (8) are connected fixedly one-way valve body (1).

6. A check valve as claimed in claim 4, wherein: the spring (10) is a spring with the inner diameter gradually increasing from top to bottom, the inner diameter of the upper surface of the spring (10) is matched with the second valve plate (13), the upper surface of the spring (10) limits the second valve plate (13), the spring (10) can be compressed on the same plane, and the spring (10) is vertically placed in the second groove (18) in a small-upper-part and large-lower-part mode.

7. A check valve as claimed in claim 4, wherein: silica gel pad (19) is installed to the lower bottom of check valve body (1), silica gel pad (19) are located first recess (17) with between first locating hole (7), silica gel pad (19) are ring shape, silica gel pad (19) contact ramp surface (15).

8. A check valve as claimed in claim 5, wherein: check valve body (1) with be equipped with ring shape sealing washer (20) between check valve plate (9), ring shape sealing washer (20) are the foaming type material of silica gel, the internal diameter of ring shape sealing washer (20) is less than the diameter of first valve plate (12), the external diameter of ring shape sealing washer (20) is greater than the diameter of second recess (18), just ring shape sealing washer (20) do not cover second locating hole (8).

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