CN216812907U

CN216812907U - Side-in bottom-out switch valve core

Info

Publication number: CN216812907U
Application number: CN202220202056.5U
Authority: CN
Inventors: 吴定强
Original assignee: Hubei Miaozhi Sanitary Ware Technology Co ltd
Current assignee: Hubei Miaozhi Sanitary Ware Technology Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-06-24
Anticipated expiration: 2032-01-25

Abstract

The utility model discloses a side-in bottom-out switch valve core, which comprises a valve core shell, wherein a pressing part is arranged at the upper end of the valve core shell, a telescopic part is arranged at the lower end of the pressing part in a matching way, a return spring and a telescopic rod are arranged at the lower end of the telescopic part, a sealing block is connected at the lower end of the telescopic rod, a water flow inlet is arranged at the lower end of the valve core shell, a sealing guide part is fixed at the inner side of the middle part of the valve core shell, a piston is arranged at the inner side of the lower end of the valve core shell, a differential pressure chamber is formed between the piston and the sealing guide part, a water flow guide outlet is arranged at the center of the piston, a water flow guide inlet is arranged at the middle part of the valve core shell, and the sectional area of the water flow guide inlet is smaller than that of the water flow guide outlet. The utility model adopts a side-in bottom-out structure, can meet specific installation requirements, and reduces the use strength, thereby prolonging the service life of the valve core.

Description

Side-in bottom-out switch valve core

[ technical field ] A

The utility model relates to the technical field of waterway control valve cores, in particular to a side-in and bottom-out switch valve core.

[ background ] A method for producing a semiconductor device

A valve element is a valve part by means of which the valve body performs the basic function of direction control, pressure control or flow control by means of its movement. The prior art valve core can be mainly divided into three types according to the operation mode: the rotary valve core, the lifting valve core and the pressing valve core are different in size, the water channel can be opened or closed by adopting a control rod capable of axially moving, specifically, a plugging structure is arranged on the control rod, and the plugging structure plugs or leaves a water inlet hole of a valve shell through axial movement, so that the purpose of switching water is achieved.

However, the following disadvantages exist in both the pull-type valve core and the push-type valve core: the blocking structure of the control rod directly blocks the water inlet of the valve shell, so that the water pressure applied to the control rod is large, and large strength is needed when a person operates the control rod by hand; when the elastic piece is adopted for the control rod to reset automatically, the elastic piece also needs to overcome the pressure action of water, so that the elastic piece is easy to have use fatigue, and the service life is influenced. The rotary valve core is provided with the extended handle outside, so that the rotary torsion during use can be reduced, but the plugging structure inside the rotary valve core is still under the action of water pressure, the borne pressure is higher, and the phenomena of abrasion and aging are easy to occur. Meanwhile, the extended handle occupies a larger space, and the limitation of the use occasion is larger.

Further, due to the different mounting positions, different mounting manners are required, i.e. different structural requirements are imposed on the valve. For example: the structure of bottom water inlet and side water outlet or side water inlet and bottom water outlet also puts new requirements on the internal structure of the valve core.

[ Utility model ] content

In view of the above, in order to overcome the defects of the prior art, the utility model provides a side-in bottom-out switch valve core, which utilizes a telescopic rod with a small sectional area to move up and down, and combines the flow difference between a water flow guide inlet and a water flow guide outlet to form negative pressure in a differential pressure chamber, so as to drive a piston to move up and open the valve core; by moving the telescopic rod downwards, the water flow guide outlet is blocked by the sealing block, so that water with certain pressure is gathered in the differential pressure chamber, the piston is driven to move downwards, and the valve core is closed.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

a side-in bottom-out switch valve core comprises a valve core shell, wherein a pressing part is arranged at the upper end of the valve core shell, a telescopic part is arranged at the lower end of the pressing part in a matched mode, a return spring is arranged at the lower end of the telescopic part, a water flow inlet is arranged at the lower end of the valve core shell, a telescopic rod extends downwards from the center of the telescopic part, and the lower end of the telescopic rod is connected with a sealing block; a sealing guide part is fixed on the inner side of the middle part of the valve core shell, and the telescopic rod penetrates through the center of the sealing guide part in a sliding manner;

the inner side of the lower end of the valve core shell is provided with a piston, a differential pressure chamber is formed between the piston and the sealing guide part, the sealing block is positioned in the differential pressure chamber, the center of the piston is provided with a water flow guide outlet, the middle of the valve core shell is provided with a water flow guide inlet, and the water flow guide inlet is positioned at the upper end of the differential pressure chamber. The sectional area of the water flow guide inlet is smaller than that of the water flow guide outlet, so that pressure difference can be formed in the differential pressure chamber. And the water flow guide inlet, the differential pressure chamber and the water flow guide outlet form a differential pressure drainage channel.

Preferably, an elastic telescopic assembly is arranged inside the telescopic part, and the upper end of the telescopic rod is connected to the telescopic part through the elastic telescopic assembly. Through the setting of elastic telescopic assembly, it can ensure the telescopic link drives sealed piece inseparabler laminate in rivers direction export forms inseparable sealed.

Furthermore, a first sealing ring is arranged on the outer side of the upper end of the piston, a second sealing ring is arranged on the bottom end face of the piston, and the water inlet is located on the valve core shell between the first sealing ring and the second sealing ring. When the piston is positioned at a lower limit position, the water inlet is sealed by the first sealing ring and the second sealing ring, so that a closed state of the valve core is formed; when the piston is positioned at the upper limit position, the second sealing ring is separated from the inner bottom surface of the valve core shell, so that the opening state of the valve core is formed.

Further, the first sealing ring is a Y-shaped sealing ring, and the second sealing ring is a conical sealing ring.

Furthermore, a third sealing ring is arranged on the outer circumference of the upper end of the valve core shell, and a fourth sealing ring is arranged on the end face of the lower end of the valve core shell.

Further, the third sealing ring and the fourth sealing ring are O-shaped sealing rings.

Further, the sectional area of the water flow guide inlet is 0.4 to 0.6 times, preferably 0.5 times, the sectional area of the water flow guide outlet.

The working principle of the utility model is as follows: the pressing part, the telescopic part and the return spring form a driving mechanism capable of moving up and down, and the structure of the driving mechanism is similar to that of a pressing type ball pen (gel pen) in the prior art. The driving mechanism formed by the pressing part, the telescopic part and the reset spring drives the telescopic rod to move up and down, so that the sealing block on the telescopic rod is driven to move up and down, and the water flow guide outlet is sealed and opened. The telescopic rod is positioned at a lower limit position by pressing the pressing part, at the moment, the sealing block is abutted against the water flow guide outlet, water flows into the differential pressure chamber from the water flow guide inlet, high-pressure tap water is gathered in the differential pressure chamber, and the piston is pushed to move downwards; meanwhile, the telescopic rod moves downwards along with the piston under the action of the elastic telescopic component, the sealing block always abuts against the water flow guide outlet, and when the piston moves downwards (the downward movement amount is not large) and abuts against the inner bottom surface of the valve core shell, the valve core is closed.

When the pressing part is pressed again, the telescopic rod drives the sealing block to move upwards, the water flow guide outlet is opened, water in the differential pressure chamber is released rapidly, the cross section area of the water flow guide inlet is smaller than that of the water flow guide outlet, the water flowing into the differential pressure chamber cannot be supplemented in time, negative pressure is formed in the differential pressure chamber, the piston moves upwards, and therefore the valve core is opened.

The utility model has the beneficial effects that: (1) the side-in and bottom-out structure is adopted, so that the specific installation requirements can be met, and the installation structure is more compact, neat and attractive; (2) the water pressure applied to the telescopic rod is smaller, so that the operating force can be reduced, and the use comfort is improved; (3) because the valve core is of a press type, the operation stroke is reduced, and an overlong handle is not needed, so that the integral volume is reduced, the application occasion is wider, and the application market is wider; (4) in the pressing process, the acting force on the telescopic rod and the sealing block is small, so that the use strength can be reduced, the service life of the valve core is prolonged, the strength requirement of each structural part is reduced, and the production cost is reduced.

[ description of the drawings ]

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic view of a valve element and a valve body of the present invention assembled together;

fig. 3 is a schematic view of a part a of the enlarged structure in fig. 1.

In the figure, 01, a valve core shell, 02, a pressing part, 03, an expansion part, 04, a return spring, 05, a water flow inlet, 06, an expansion rod, 07, a sealing block, 08, a sealing guide part, 09, a piston, 10, a differential pressure chamber, 11, a water flow guide outlet, 12, a water flow guide inlet, 13, an elastic expansion component, 14, a first sealing ring, 15, a second sealing ring, 16, a valve body, 17, a third sealing ring, 18 and a fourth sealing ring.

[ detailed description ] embodiments

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 to 3, a side-in bottom-out switch valve core comprises a valve core shell 01, wherein a pressing part 02 is arranged at the upper end of the valve core shell 01, a telescopic part 03 is arranged at the lower end of the pressing part 02 in a matching manner, a return spring 04 is arranged at the lower end of the telescopic part 03, a water flow inlet 05 is arranged at the lower end of the valve core shell 01, a telescopic rod 06 extends downwards from the center of the telescopic part 03, and a sealing block 07 is connected to the lower end of the telescopic rod 06; a sealing guide part 08 is fixed on the inner side of the middle part of the valve core shell 01, and the telescopic rod 06 penetrates through the center of the sealing guide part 08 in a sliding mode, so that the guide of the telescopic rod 06 is realized, and the running stability is ensured.

A piston 09 is arranged on the inner side of the lower end of the valve core shell 01, a differential pressure chamber 10 is formed between the piston 09 and the sealing guide part 09, the sealing block 07 is positioned in the differential pressure chamber 10, a water flow guide outlet 11 is arranged at the center of the piston 09, a water flow guide inlet 12 is transversely arranged in the middle of the outer wall of the valve core shell 01 in a penetrating manner, and the water flow guide inlet 12 is positioned at the upper end of the differential pressure chamber 10. The cross-sectional area of the water guide inlet 12 is 0.5 times the cross-sectional area of the water guide outlet 11, which ensures that a pressure difference can be formed in the differential pressure chamber 10. And, the water flow guiding inlet 12, the differential pressure chamber 10 and the water flow guiding outlet 11 form a differential pressure flow guiding channel (not marked in the figure).

The inside of pars contractilis 03 is provided with elasticity flexible subassembly 13, the upper end of telescopic link 06 is passed through elasticity flexible subassembly 13 connect in pars contractilis 03. Through the setting of flexible subassembly 13, it can ensure telescopic link 06 drives sealed piece 07 is inseparabler laminate in rivers direction export 11 to form inseparable sealed.

The outer side of the upper end of the piston 09 is provided with a Y-shaped first sealing ring 14, the bottom end face of the piston 09 is provided with a conical second sealing ring 15, and the water inlet 05 is positioned on the valve core shell 01 between the first sealing ring 14 and the second sealing ring 15. When the piston 09 is at the lower limit position, the water inlet 05 is sealed by the first sealing ring 14 and the second sealing ring 15, so that a closed state of the valve core is formed; when the piston 09 is at the upper limit position, the second sealing ring 15 is separated from the inner bottom surface of the valve core shell 01, so that the open state of the valve core is formed.

In order to realize the sealing between the valve core and the valve body 16 and avoid water flowing out from the valve core and the valve body 16, a third sealing ring 17 is arranged on the outer circumference of the upper end of the valve core shell 01, a fourth sealing ring 18 is arranged on the end face of the lower end of the valve core shell 01, and the third sealing ring 17 and the fourth sealing ring 18 are O-shaped sealing rings, so that the sealing performance is good, and the price is substantial.

As shown in fig. 1 to 3, when in use, the telescopic rod 06 is in a lower limit position by pressing the pressing part 02, at this time, the sealing block 07 abuts against the water flow guide outlet 11, water flows into the differential pressure chamber 10 from the water flow guide inlet 12, and high-pressure tap water is gathered in the differential pressure chamber 10 and pushes the piston 09 to move down; meanwhile, the telescopic rod 06 moves downwards along with the piston 09 under the action of the elastic telescopic component 13, the sealing block 07 always abuts against the water flow guide outlet 11, and when the piston 09 moves downwards and abuts against the inner bottom surface of the valve core shell 01, the valve core is closed. When the pressing part 02 is pressed again, the telescopic rod 06 moves upwards to drive the sealing block 07 to move upwards, the water flow guide outlet 11 is opened, water in the differential pressure chamber 10 is released rapidly, and since the sectional area of the water flow guide inlet 12 is smaller than that of the water flow guide outlet 11, the inflow water cannot be supplemented in time, negative pressure is formed in the differential pressure chamber 10, so that the piston 09 moves upwards, namely the valve core is opened.

The utility model adopts a side-in bottom-out structural form, can meet specific installation requirements, enables the installation structure to be more compact, neat and beautiful, and can reduce the operation force and improve the use comfort because the water pressure borne by the telescopic rod is smaller. In the pressing process, the acting force on the operation structural part in the valve core is small, the use strength is reduced, and the service life of the valve core is prolonged.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A side-in bottom-out switch valve core comprises a valve core shell, wherein a pressing part is arranged at the upper end of the valve core shell, a telescopic part is arranged at the lower end of the pressing part in a matching manner, a return spring is arranged at the lower end of the telescopic part, and a water flow inlet is arranged at the lower end of the valve core shell; a sealing guide part is fixed on the inner side of the middle part of the valve core shell, and the telescopic rod penetrates through the center of the sealing guide part in a sliding manner;

the inboard of case shell lower extreme is provided with a piston, the piston with form a differential pressure cavity between the sealed guide part, sealed piece is located in the differential pressure cavity, the center of piston is provided with a rivers direction export, the middle part of case shell is provided with a rivers direction import, just rivers direction import is located the upper end of differential pressure cavity, the sectional area of rivers direction import is less than the sectional area of rivers direction export, rivers direction import, differential pressure cavity and rivers direction export forms a differential pressure drainage passageway.

2. The side entry and bottom exit switch valve cartridge of claim 1, wherein an elastic expansion member is disposed inside the expansion portion, and an upper end of the expansion rod is connected to the expansion portion through the elastic expansion member.

3. The side-in bottom-out switch valve cartridge of claim 1, wherein the piston has a first sealing ring disposed on the outside of the upper end of the piston and a second sealing ring disposed on the bottom surface of the piston, and the water inlet is located on the cartridge housing at a position between the first sealing ring and the second sealing ring.

4. A side entry bottom switch valve cartridge as claimed in claim 3, wherein said first seal is a Y-seal and said second seal is a cone seal.

5. The side-in bottom-out switch valve cartridge of claim 1, wherein the outer circumference of the upper end of the valve cartridge housing is provided with a third sealing ring, and the end face of the lower end of the valve cartridge housing is provided with a fourth sealing ring.

6. The side-in, bottom-out switch valve cartridge of claim 5, wherein the third seal and the fourth seal are O-ring seals.

7. A side entry, bottom exit switch valve cartridge according to claim 1, wherein said water flow directing inlet has a cross-sectional area that is 0.4 to 0.6 times the cross-sectional area of said water flow directing outlet.

8. A side entry, bottom exit switch valve cartridge according to claim 7, wherein said water flow directing inlet has a cross-sectional area that is 0.5 times the cross-sectional area of said water flow directing outlet.