CN218060596U - Diaphragm type pressure flushing valve - Google Patents

Abstract

The utility model discloses a diaphragm type pressure flushing valve, which comprises a valve body, a valve cover and a diaphragm valve core group, wherein the valve body is connected with the valve cover, a valve front area is arranged between the valve body and the diaphragm valve core group, a back pressure cavity is arranged between the valve cover and the diaphragm valve core group, the diaphragm valve core group comprises a diaphragm and a water stop pad, and the water stop pad is matched with a sealing surface of the valve body; the diaphragm is provided with an arc-shaped body and is fixed by the valve cover after being fixed on the diaphragm base. The diaphragm of the diaphragm type pressure flushing valve adopts an arc shape, becomes a straight line after rising, and can ensure that no crack appears after long-term use; the self-cleaning spring can prevent foreign matters from blocking the water passing groove to prevent water from stopping, and can also accurately control the area of the water passing groove, thereby realizing the accurate control of the water flushing quantity and greatly improving the production detection efficiency of the closestool.

Description

Diaphragm type pressure flushing valve

Technical Field

The utility model relates to a diaphragm formula pressure flushometer.

Background

In some excrement flushing valves installed in public toilets, a water inlet end is connected with a thick water pipe, the water inlet end is generally 1 inch, a water outlet end is connected with a ceramic closestool seat, and a closestool is directly flushed by large water volume. The internal control switch of the flush valve is generally classified into 2 types: the class 1 adopts a rubber diaphragm valve, and the side mechanical pressure handle pushes a diaphragm to incline, release pressure and trigger the diaphragm to rise so as to open the valve to flush water; and the other type 1 is that a V-shaped sealing ring is sleeved on a valve core, a back pressure cavity is arranged at the top of the V-shaped sealing ring, a valve front area is arranged at the bottom of the V-shaped sealing ring, a small water passing groove is generally arranged between the V-shaped sealing ring and the valve front area, and the valve core is lifted to trigger the flushing valve to flush by discharging and releasing water in the back pressure cavity.

For type 1 diaphragm valve, because diaphragm self needs to compress tightly sealed with the disk seat terminal surface, lose elasticity after long-term the use back diaphragm rubber is ageing and can lead to sealing badly not stagnant water, can have scale deposit and foreign matter to block up after the long-term use of little water groove of crossing simultaneously and lead to the backpressure chamber not enough to step up through the backpressure chamber and let the diaphragm compress tightly the disk seat down, also can lead to not stagnant water.

For the type 2 diaphragm valve, the V-shaped sealing ring is closed by delaying the decline of the friction force between the outer diameter and the valve cover hole, so that the normal flushing water quantity of the closestool is ensured, and after long-term use, the valve core is quickly declined due to insufficient abrasion and sealing of the outer diameter, so that the water quantity of the closestool is very low and the closestool cannot be normally used; in addition, the V-shaped sealing ring is greatly influenced by temperature and expansion and contraction, the valve core does not fall due to large expansion of the outer diameter at high temperature in summer, and the water cannot be stopped by the closestool, and the valve core falls too fast due to large reduction of the outer diameter at cold contraction in winter, so that the water quantity of the closestool is too small to work normally.

Disclosure of Invention

In order to solve the technical problem, an object of the utility model is to provide a diaphragm type pressure flushometer.

The utility model discloses a following technical scheme realizes: a diaphragm type pressure flushing valve comprises a valve body, a valve cover and a diaphragm valve core group, wherein the valve body is connected with the valve cover, a valve front region is arranged between the valve body and the diaphragm valve core group, a back pressure cavity is arranged between the valve cover and the diaphragm valve core group, the diaphragm valve core group comprises a diaphragm and a water stop pad, and the water stop pad is matched with a sealing surface of the valve body; the diaphragm is provided with an arc-shaped body and is fixed by the valve cover after being fixed on the diaphragm base.

Preferably, the membrane is M-arc shaped.

Preferably, the diaphragm valve core group further comprises a valve core seat and a self-cleaning spring, the valve core seat is provided with a water through hole, the self-cleaning spring is inserted into the water through hole, and a water through groove is formed in a gap between the self-cleaning spring and the water through hole.

Preferably, the valve body comprises a water inlet channel, and the water inlet channel is communicated with the back pressure cavity through the water passing groove.

Preferably, the valve core seat is connected with the valve core fixing piece to form a groove body, and the groove body can be matched and connected with or separated from the diaphragm.

Preferably, the diaphragm further comprises an opening, and the opening is formed in the middle of the arc-shaped body.

Preferably, one end of the water stop pad is fixed by the water stop pad locking piece, and the other end of the water stop pad can be matched with the sealing surface for operation.

The diaphragm of the diaphragm type pressure flushing valve of the utility model adopts an arc shape, becomes a straight line after rising, can not be pulled when the rising stroke does not exceed 7MM through accurate calculation, and can ensure that no crack appears after long-term use; the self-cleaning spring can prevent foreign matters from blocking the water passing groove to cause no water stop, and can also accurately control the area of the water passing groove, thereby realizing the accurate control of the water flushing quantity and greatly improving the production detection efficiency of the closestool; the diaphragm is only used for upgrading and resetting and is not used as a sealing element, so that the influences of motion abrasion and thermal expansion and cold contraction are avoided, the closestool can be stably used all the year round, and the failure is not worried about after long-term use.

Drawings

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

Fig. 1 is an exploded view of the present invention.

Fig. 2 is a sectional view of the present invention.

Fig. 3 is a schematic view of the water path when the flush valve of the present invention is closed.

Fig. 4 is a schematic view of the water path when the flush valve of the present invention is opened.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "vertical", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to the attached figures 1 to 4 of the specification, the diaphragm type pressure flushing valve comprises a valve body 1, a valve cover 2 and a diaphragm valve core group 3, wherein the valve cover 2 is connected with the valve body 1; the valve body 1 comprises a water inlet channel 11, a valve front area A is arranged between the valve body 1 and the diaphragm valve core group 3, a back pressure cavity B is arranged between the valve cover 2 and the diaphragm valve core group 3, and the bottom of the diaphragm valve core group 3 is tightly pressed and sealed with the valve body 1 through a water stop gasket 35.

The diaphragm valve core group 3 comprises a diaphragm 31, a valve core seat 32, a valve core fixing piece 33, a self-cleaning spring 34, a water stop pad 35, a water stop pad locking piece 36 and a diaphragm base 37, a water passing hole is formed in the valve core seat 32, the self-cleaning spring 34 is inserted into the water passing hole of the valve core seat, the self-cleaning spring 34 is inserted into the valve core seat 32 through the water passing hole, the function of cleaning small holes is achieved in the lifting process of each movement, and the small holes are prevented from being blocked by foreign matters; the gap between the self-cleaning spring 34 and the water passing hole forms a water passing groove 32a, the self-cleaning spring can prevent foreign matters from blocking the water passing groove to cause no water stop, and can also accurately control the area of the water passing groove, thereby realizing the accurate control of the water flushing amount, for example, the wire diameter tolerance of the spring can be very small and not more than 0.02MM, the tolerance of a valve core seat hole can also be very small and +/-0.02 MM, so that the size of a pore can be accurately controlled in a proper range, the time for delaying the closing of the diaphragm valve can be controlled in a required range through calculation and actual test, and the water flushing amount of the flushing valve can be accurately controlled. The valve core seat 32 is connected with the valve core fixing piece 33, and a groove body a1 is formed after the connection of the valve core seat and the valve core fixing piece, and the groove body a1 can be matched and connected or separated with the diaphragm 31; the diaphragm 31 is provided with an arc-shaped body 31a and an opening 31b, the opening 31b is arranged in the middle of the arc-shaped body 31a, for example, the diaphragm 31 is in an M arc shape, the diaphragm 31 is fixedly connected to the diaphragm base 37 and then is positioned and connected by the valve cover 2, when the valve core group rises to the top, the arc-shaped body 31a of the diaphragm 31 can become a plane but has no pulling force, and the diaphragm can not be pulled within a calculated buffering range, for example, when the stroke reaches the maximum 7MM, so that the diaphragm can be effectively prevented from cracking after long-term use; the utility model discloses a diaphragm only is used for upgrading and resets, does not use as the sealing member but adopts the stagnant water pad of valve core case bottom to seal. The water stop gasket 35 of the diaphragm valve core group can be matched with the sealing surface s of the valve body 1 to open or close the communication between the water inlet channel 11 and the valve front area A, one end of the water stop gasket 35 is positioned by the water stop gasket locking part 36, and the other end of the water stop gasket 35 can be matched with the sealing surface s of the valve body to operate.

Referring to fig. 3 and 4, the operation of the diaphragm type pressure flushing valve of the present invention is illustrated. When the waterway of the flushing valve is closed, the pressure relief valve is in a closed state, the backpressure cavity B is filled with water and then downwards compresses the water stop gasket 35 to the valve body 1, and the water inlet channel 11 and the waterway in the front valve area A are in a closed state; the pressure relief valve is opened, the back pressure cavity B is drained from the top to relieve pressure, the membrane valve core group 3 can move upwards to the top, the bottom of the water stop gasket 35 is separated from the sealing surface s of the valve body 1, the flushing valve is opened in a flushing mode, meanwhile, one part of flushing water (namely water of a water inlet channel) of the front valve area A enters the back pressure cavity A through the water passing groove 32a, the pressure of the back pressure cavity A rises to press the membrane valve core group 3 downwards to the sealing surface s of the water stop gasket 35 and the valve body to be sealed, and the flushing valve is closed.

While the foregoing specification illustrates and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to the disclosed embodiments, and that modifications and environments may be resorted to, falling within the scope of the inventive concept as described herein, either as indicated by the above teachings or as modified by the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (7)

1. The diaphragm type pressure flushing valve is characterized by comprising a valve body, a valve cover and a diaphragm valve core group, wherein the valve body is connected with the valve cover, a valve front area is arranged between the valve body and the diaphragm valve core group, a back pressure cavity is arranged between the valve cover and the diaphragm valve core group, the diaphragm valve core group comprises a diaphragm and a water stop pad, and the water stop pad is matched with a sealing surface of the valve body; the diaphragm is provided with an arc-shaped body and is fixed by the valve cover after being fixed on the diaphragm base.

2. The diaphragm pressure flush valve according to claim 1, wherein said diaphragm is M-arc shaped.

3. The diaphragm type pressure flushing valve according to claim 1, wherein the diaphragm valve core set further comprises a valve core seat and a self-cleaning spring, the valve core seat is provided with a water through hole, the self-cleaning spring is inserted into the water through hole, and a water through groove is formed in a gap between the self-cleaning spring and the water through hole.

4. The diaphragm pressure flush valve according to claim 3, wherein said valve body includes a water inlet passage communicating with said back pressure chamber through said water passing groove.

5. The diaphragm type pressure flushing valve of claim 3 wherein the valve core seat is connected with the valve core fixing member to form a groove, and the groove can be connected with or separated from the diaphragm in a matching manner.

6. The diaphragm pressure flush valve according to claim 1, further comprising an opening in the middle of the arcuate body.

7. A diaphragm pressure flush valve according to claim 1, wherein said water stop gasket is secured at one end by a water stop gasket retaining member and at the other end is adapted to cooperate with said sealing surface.

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