CN219994467U - Novel normally open one-way valve seat - Google Patents

Abstract

The utility model discloses a novel normally open type one-way valve seat, which comprises a valve seat and a valve core, wherein a valve cavity is formed in the valve seat, an inlet is formed in the top of the valve cavity, an outlet is formed in the bottom of the valve cavity, the valve core is in sliding connection with the inner wall of the valve cavity, a spring is cooperatively arranged between the bottom of the valve core and the inner wall of the lower end of the valve cavity, the spring is always in a compressed state so as to form a normally open state between the valve core and the bottom of the valve cavity, and an adjusting component is arranged in the valve cavity and is positioned above the valve core.

Description

Novel normally open one-way valve seat

Technical Field

The utility model relates to the field of fluid valves, in particular to a novel normally-open one-way valve seat.

Background

The one-way valve is a one-way valve which can only flow along a water inlet, but cannot flow back through a water outlet medium, is commonly called a one-way valve, is also called a check valve or a check valve, is used for preventing reverse flow of oil flow in a hydraulic system or preventing reverse flow of compressed air in a pneumatic system, is provided with a straight-through type one-way valve and a right-angle type one-way valve, is arranged on a pipeline in a threaded connection manner, is relatively common in the prior art, and is required to be kept in a normally open state in some special occasions, and is closed only when the flow speed or the pressure of the fluid is overlarge.

For this purpose, those skilled in the art improve this, for example, the authorized publication number CN201720113001.6 discloses a normally open check valve, which comprises an upper valve body and a lower valve body, wherein the upper valve body is fixedly connected with the lower valve body, a valve cavity with an expanded diameter is formed between the upper valve body and the lower valve body, an inlet is arranged at the top of the valve cavity, an outlet is arranged at the bottom of the valve cavity, a valve core is arranged in the valve cavity, the valve core forms a seal with the bottom of the valve cavity, a magnet ring is inlaid at the bottom of the valve cavity, a magnet is arranged in the valve core, and the magnetic poles of the magnet and the magnet ring are opposite to each other, so that a normally open state is formed between the valve core and a bottom stage of the valve cavity. Through adopting foretell structure, utilize the principle that magnet and magnet ring polarity repel each other, make keeping always open between case and the disk seat, only under the condition that fluid medium velocity of flow or pressure rise sharply, the repulsion between magnet and the magnet ring is overcome to the case, seals the check valve, however the cooperation of the last valve body of above-mentioned check valve and lower valve body only plays sealed effect, and the function is single, can't carry out pressure regulation to the check valve inside, for this reason, we propose a novel normally open check valve seat and be used for solving above-mentioned problem.

Disclosure of Invention

The utility model aims to provide a novel normally open one-way valve seat so as to solve the problems in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions: a novel normally open one-way valve seat, which is characterized in that: the valve seat is internally provided with a valve cavity, the top of the valve cavity is provided with an inlet, the bottom of the valve cavity is provided with an outlet, the valve core is in sliding connection with the inner wall of the valve cavity, a spring is arranged between the bottom of the valve core and the inner wall of the lower end of the valve cavity in a matched mode, the spring is always in a compressed state so that a normally open state is formed between the valve core and the bottom of the valve cavity, and an adjusting assembly is arranged in the valve cavity and located above the valve core.

Preferably, the valve core comprises a sealing plate, the diameter of the sealing plate is smaller than the inner diameter of the valve cavity and larger than the inner diameter of the outlet, two guiding sliding sheets are symmetrically and fixedly arranged at the top of the sealing plate, two trapezoid sliding sheets are symmetrically and fixedly arranged at the top of the sealing plate, and guiding grooves are formed in the inner wall of the valve cavity in a matched mode and are matched with the guiding sliding sheets and the trapezoid sliding sheets.

Preferably, the adjusting component comprises a bidirectional screw rod, the bidirectional screw rod is rotationally connected with the inner wall of the valve cavity, one end of the bidirectional screw rod penetrates through the valve seat to be connected with an adjusting block, two sliding blocks are symmetrically and in threaded fit connection with the outer wall of the bidirectional screw rod, a sliding rod is fixedly arranged at the bottom of the sliding block, the bottom of the sliding rod is an inclined plane, the slope of the inclined plane is the same as that of a trapezoid sliding sheet, a sliding groove is formed in the inclined plane of the trapezoid sliding sheet in a matched manner, and the bottom of the sliding rod is in butt joint with the sliding groove in a normally open state.

Preferably, the inner wall of the valve cavity is symmetrically provided with fixing grooves, sealing bearings are respectively arranged in the fixing grooves, and the bidirectional screw rod is coaxially matched and connected with the sealing bearings.

Preferably, the bottom of the valve cavity is of a two-layer stepped structure, the top of the upper layer is provided with a sealing gasket, and the lower layer is connected with the bottom of the spring.

Compared with the prior art, the utility model has the beneficial effects that: through the cooperation of case and spring for form the normally open state between case and the valve pocket bottom, through the setting of adjusting part, make can adjust the position of case under the normally open state, and then realize can adjusting the inside pressure of check valve, increase the variety of disk seat function.

Drawings

FIG. 1 is a schematic view of a structure of a novel normally open one-way valve seat of the present utility model;

FIG. 2 is a schematic view of the internal structure of the present utility model in a normally open state;

FIG. 3 is a schematic view of the internal structure of the present utility model in a closed state;

fig. 4 is a schematic structural view of the valve core of the present utility model.

Description of the drawings: 1. a valve seat; 2. a valve core; 21. a sealing plate; 22. a guiding sliding vane; 23. a trapezoidal sliding sheet; 3. a valve cavity; 4. an inlet; 5. an outlet; 6. a spring; 7. an adjustment assembly; 71. a two-way screw rod; 72. an adjusting block; 73. a slide block; 74. a slide bar; 8. a guide groove; 9. a chute; 10. a fixing groove; 11. sealing the bearing; 12. and a sealing gasket.

Description of the embodiments

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-4, a novel normally open one-way valve seat comprises a valve seat 1 and a valve core 2, wherein a valve cavity 3 is formed in the valve seat 1, an inlet 4 is formed in the top of the valve cavity 3, an outlet 5 is formed in the bottom of the valve cavity 3, the valve core 2 is slidably connected with the inner wall of the valve cavity 3, a spring 6 is arranged between the bottom of the valve core 2 and the inner wall of the lower end of the valve cavity 3 in a matched mode, the spring 6 is always in a compressed state so that a normally open state is formed between the valve core 2 and the bottom of the valve cavity 3, the valve core 2 overcomes the elasticity of the spring 6 to seal the one-way valve only when the pressure or the flow rate of fluid medium flowing into the inlet 4 is overlarge, an adjusting component 7 is arranged in the valve cavity 3 and used for adjusting the position of the valve core 2 in the normally open state, and further pressure inside the one-way valve is adjusted, and the adjusting component 7 is located above the valve core 2.

Further, the valve core 2 comprises a sealing plate 21, the diameter of the sealing plate 21 is smaller than the inner diameter of the valve cavity 3 and larger than the inner diameter of the outlet 5, two guiding sliding sheets 22 are symmetrically and fixedly arranged at the top of the sealing plate 21, two trapezoid sliding sheets 23 are symmetrically and fixedly arranged at the top of the sealing plate 21, and guiding grooves 8 are formed in the inner wall of the valve cavity 3 in a matched mode through the guiding sliding sheets 22 and the trapezoid sliding sheets 23.

From the above description, it is clear that: the sealing plate 21, the two guiding sliding sheets 22 and the two trapezoidal sliding sheets 23 form a fluid circulation channel with the inner wall of the valve cavity 3, and the guiding sliding sheets 22 and the trapezoidal sliding sheets 23 can directionally slide through the arrangement of the guiding grooves 8.

Further, the adjusting component 7 comprises a bidirectional screw rod 71, the bidirectional screw rod 71 is rotationally connected with the inner wall of the valve cavity 3, one end of the bidirectional screw rod 71 penetrates through the valve seat 1 to be connected with an adjusting block 72, the outer wall of the bidirectional screw rod 71 is symmetrically and in threaded fit with two sliding blocks 73, the bottoms of the sliding blocks 73 are fixedly provided with sliding rods 74, the bottoms of the sliding rods 74 are inclined planes, the slope of the sliding rods is identical to that of the trapezoid sliding sheets 23, the inclined planes of the trapezoid sliding sheets 23 are matched with the sliding rods 74 to be provided with sliding grooves 9, and the bottoms of the sliding rods 74 are abutted against the sliding grooves 9 in a normally open state.

From the above description, it is clear that: the bidirectional screw rod 71 can be driven to rotate through the rotation adjusting block 72, the rotation of the bidirectional screw rod 71 can be converted into synchronous sliding of the sliding block 73 to the center or two ends of the bidirectional screw rod 71 through the threaded fit of the bidirectional screw rod 71 and the sliding rod 74 and the trapezoidal sliding sheet 23 are matched, when the sliding rod 74 slides to the two ends of the bidirectional screw rod 71, the trapezoidal sliding sheet 23 slides downwards along the guide groove 8 and further extrudes the spring 6, and when the sliding rod 74 slides to the center of the bidirectional screw rod 71, the top of the trapezoidal sliding sheet 23 is driven to prop against the bottom of the sliding rod 74 through the elastic force of the spring 6, namely the trapezoidal sliding sheet 23 slides upwards along the guide groove 8, and the sliding rod 74 can directionally slide in the sliding groove 9 through the arrangement of the sliding groove 9.

Further, the inner wall of the valve cavity 3 is symmetrically provided with fixing grooves 10, sealing bearings 11 are respectively arranged in the fixing grooves 10, and a bidirectional screw rod 71 is coaxially matched and connected with the sealing bearings 11.

From the above description, it is clear that: by providing the sealed bearing 11, the leakage of the internal fluid medium to the outside can be prevented.

Further, the bottom of the valve cavity 3 is of a two-layer stepped structure, the top of the upper layer is provided with a sealing gasket 12, and the lower layer is connected with the bottom of the spring 6.

From the above description, it is clear that: in the closed state, a seal can be formed with the bottom of the valve chamber 3 by the cooperation of the sealing plate 21 and the sealing gasket 12.

The working principle of the utility model is described as follows:

when the valve is used, the rotation adjusting block 72 drives the bidirectional screw rod 71 to rotate, the bidirectional screw rod 71 rotates to drive the sliding block 73 to synchronously slide towards the center or two ends of the bidirectional screw rod 71, the sliding block 73 slides to drive the sliding rod 74 to synchronously move towards the center or two ends of the bidirectional screw rod 71 in the sliding groove 9, the sliding rod 74 moves to drive the trapezoid sliding vane 23 to vertically downwards or upwards slide in the guide groove 8, the position of the valve core 2 is adjusted in a normally open state, and then the internal pressure of the check valve is adjusted.

In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. A novel normally open one-way valve seat, which is characterized in that: including disk seat (1) and case (2), it has valve pocket (3) to open in disk seat (1), the top of valve pocket (3) is equipped with import (4), the bottom of valve pocket (3) is equipped with export (5), case (2) and valve pocket (3) inner wall sliding connection, cooperation is provided with spring (6) between case (2) bottom and valve pocket (3) lower extreme inner wall, spring (6) are in compression state all the time so that form normally open state between case (2) and valve pocket (3) bottom, be provided with adjusting part (7) in valve pocket (3), adjusting part (7) are located case (2) top.

2. The novel normally open one-way valve seat of claim 1, wherein: the valve core (2) comprises a sealing plate (21), the diameter of the sealing plate (21) is smaller than the inner diameter of the valve cavity (3) and larger than the inner diameter of the outlet (5), two guiding sliding sheets (22) are symmetrically and fixedly arranged at the top of the sealing plate (21), two trapezoidal sliding sheets (23) are symmetrically and fixedly arranged at the top of the sealing plate (21), and guiding grooves (8) are formed in the inner wall of the valve cavity (3) in a matched mode, and the guiding sliding sheets (22) and the trapezoidal sliding sheets (23) are matched.

3. The novel normally open one-way valve seat of claim 1, wherein: the adjusting assembly (7) comprises a bidirectional screw rod (71), the bidirectional screw rod (71) is rotationally connected with the inner wall of the valve cavity (3), one end of the bidirectional screw rod (71) penetrates through the valve seat (1) to be connected with an adjusting block (72), two sliding blocks (73) are symmetrically and in threaded fit connection with the outer wall of the bidirectional screw rod (71), sliding rods (74) are fixedly arranged at the bottoms of the sliding blocks (73), the bottoms of the sliding rods (74) are inclined planes, the inclined planes of the sliding rods (74) are identical to the inclined planes of the trapezoid sliding sheets (23), sliding grooves (9) are formed in the inclined planes of the trapezoid sliding sheets (23) in a matched mode, and the bottoms of the sliding rods (74) are in butt joint with the sliding grooves (9) in a normally open state.

4. A novel normally open one-way valve seat according to claim 3, wherein: the inner wall of the valve cavity (3) is symmetrically provided with fixing grooves (10), sealing bearings (11) are respectively arranged in the fixing grooves (10), and the bidirectional screw rod (71) is coaxially matched and connected with the sealing bearings (11).

5. The novel normally open one-way valve seat of claim 1, wherein: the bottom of the valve cavity (3) is of a two-layer stepped structure, the top of the upper layer is provided with a sealing gasket (12), and the lower layer is connected with the bottom of the spring (6).