CN214248428U - Novel pressure reducing valve - Google Patents

Abstract

The utility model discloses a novel pressure reducing valve, its technical scheme main points are: including valve body, valve gap and hood, the valve gap is fixed in the valve body upper end, the inside baffle that is equipped with of valve body, cavity and last cavity are cut apart into with the circulation passageway of valve body bottom to the baffle, cavity left end intercommunication inlet channel down, go up cavity right-hand member intercommunication outlet conduit, the circulation mouth that runs through around being equipped with on the baffle, by the movable block shutoff in the circulation mouth, the conflict of movable block up end is equipped with the diaphragm, diaphragm upper end and valve body vacuole formation, movable assembly is connected to the movable block upper end, movable assembly top is fixed at hood inner chamber lower extreme, the hood spiro union is in the valve gap upper end, the cavity is through getting with outlet conduit and press the pipe intercommunication.

Description

Novel pressure reducing valve

Technical Field

The utility model relates to a relief pressure valve field, more specifically the novel relief pressure valve that says so relates to.

Background

The pressure reducing valve is a valve which reduces the inlet pressure to a certain required outlet pressure through regulation and leads the outlet pressure to be automatically kept stable by relying on the energy of water. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.

The pressure balance effect can only be realized through the spring force to current relief pressure valve, and the pressure in outlet pipe and the inlet pipe can change at any time, when adopting the spring to regard as applying pressure, the pressure often can appear outlet pipe internal pressure and be greater than the spring force, and the condition such as backward flow appears, and decide the pressure value through the spring, such pressure value can't change, in the condition that needs high pressure, can't reach through the spring, consequently design a section can automatic adjustment spring exerted pressure and the very necessary of the relief pressure valve that the outlet pipe internal pressure is unanimous.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a but novel relief pressure valve that pressure that automatic adjustment spring was applyed and outlet pipe internal pressure are unanimous.

In order to achieve the above purpose, the utility model provides a following technical scheme:

this kind of novel relief pressure valve, including valve body, valve gap and hood, the valve gap is fixed in the valve body upper end, the inside baffle that is equipped with of valve body, cavity and last cavity are cut apart into with the circulation passageway of valve body bottom to the baffle, cavity left end intercommunication inlet channel down, go up cavity right-hand member intercommunication outlet conduit, the circulation mouth that runs through around being equipped with on the baffle, by the movable block shutoff in the circulation mouth, the conflict of movable block up end is equipped with the diaphragm, diaphragm upper end and valve body vacuole formation, movable assembly is connected to the movable block upper end, top cap inner chamber lower extreme is fixed at the movable assembly top, the hood spiro union is in the valve gap upper end, the cavity is pressed the pipe intercommunication through getting with outlet conduit.

Further, the movable assembly comprises a movable plate, an expansion spring, a nut, a spring pressing plate, a screw and a top cap, the movable plate is fixed to the upper end of the movable block through the nut, the movable plate can move up and down in the valve cover, the expansion spring is fixed to the upper end of the movable plate, another connector of the expansion spring is fixed to the spring pressing plate, the screw is abutted to the center of the top surface of the spring pressing plate, and the tail portion of the screw is fixed to the top cap.

Furthermore, the side of fly leaf is equipped with ring packing, ring packing installs when on the fly leaf with valve gap inside wall sealing contact.

Furthermore, the top of the valve cover is provided with a thread head with external threads, the inner cavity of the top cap is a thread groove with internal threads, and the thread head is in threaded connection with the thread groove in a matching mode.

Furthermore, the pressure tapping pipe is provided with a switch valve, and the pressure tapping valve is detachably connected with a filter sheet.

Furthermore, the circulation port and the bottom of the movable block are provided with annular bosses which are matched with each other.

The utility model has the advantages that:

1. the pressure at the upper end of the movable block is the pressure in the water outlet pipe by arranging the cavity and the arrangement that the cavity is communicated with the water outlet pipe through the pressure-taking pipe, the movable block is upwards driven to jack up after the pressure of the water inlet pipe is greater than the pressure of the water outlet pipe, and the pressure in the cavity can be automatically changed by arranging the pressure-taking pipe, namely the pressure in the water inlet pipe is automatically compared with the pressure in the water inlet pipe, so that the effects of pressure reduction stability and automatic pressure regulation can be achieved;

2. the acting force of the spring can be adjusted through the threaded connection between the top cap and the valve cover, namely, the top cap moves up and down to drive the screw and the spring pressing plate to move, so that the spring provides different initial elastic forces to adjust the pressure reduction effect in the valve body.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

fig. 2 is a cross-sectional view of the ring-shaped boss of the present invention.

Reference numerals: 1. a valve body; 10. a lower cavity; 11. an upper cavity; 12. a water inlet pipe; 13. a water outlet pipeline; 130. a pressure sampling pipe; 14. a partition plate; 140. a flow port; 15. a valve cover; 2. a movable block; 20. an annular boss; 3. a membrane; 4. a cavity; 5. a movable plate; 6. a nut; 7. a spring; 8. a screw; 9. and (4) ejecting a cap.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 to 2, the working principle of the present embodiment is as follows: water enters the lower cavity 10 through the water inlet pipe 12, the cavity 4 is communicated with the water outlet pipe 13 through the pressure tapping pipe 130, namely, the pressure in the cavity 4 is consistent with the pressure of the water outlet pipeline 13, and the inner cavity is arranged at the upper end of the movable block 2, that is, if the movable block 2 moves upwards, the pressure in the water inlet pipe 12 is required to be greater than the pressure in the water outlet pipe 13 (i.e. the pressure in the inner cavity) and the downward acting force of the spring 7, the movable block 2 can be lifted, the downward acting force of the spring 7 can be adjusted through the threaded connection between the top cap 9 and the valve cover 15, namely, the top cap 9 rotates to move up and down on the valve cover 15, thereby driving the screw 8 and the pressing plate of the spring 7 to move, leading the spring 7 to provide different initial elastic force, and when the pressure in the water inlet pipeline 12 is less than or equal to the pressure of the cavity 4 or the water outlet pipeline 13, the spring 7 drives the movable block 2 to press the sealing circulation port 140 downwards, and the pressure of the water outlet pipe is reduced.

The novel pressure reducing valve comprises a valve body 1, a valve cover 15 and a top cap 9, the valve cover 15 is fixed at the upper end of the valve body 1, a partition plate 14 is arranged inside the valve body 1, the partition plate 14 divides a circulation channel at the bottom of the valve body 1 into a lower cavity 10 and an upper cavity 11, the left end of the lower cavity 10 is communicated with a water inlet pipeline 12, the right end of the upper cavity 11 is communicated with a water outlet pipeline 13, a circulation port 140 which runs through the partition plate 14 from front to back is formed in the circulation port 140 and is blocked by a movable block 2, a diaphragm 3 is arranged on the upper end face of the movable block in a butting mode, the upper end of the diaphragm 3 is communicated with a cavity 4 formed in the valve body 1, a movable assembly is connected to the upper end of the movable block 2, the top of the movable assembly is fixed at the lower end of an inner cavity of the top cap 9, the top cap 9 is in screwed on the upper end of the valve cover 15, and the cavity 4 is communicated with the water outlet pipeline 13 through a pressure tapping pipe 130.

The cavity 4 is connected with the water outlet pipe 13 through the pressure sampling pipe 130, namely, the pressure in the cavity 4 is consistent with the water outlet pipe 13, therefore, the pressure at the upper end of the movable block 2 is the pressure applied by the cavity 4 and the pressure of the spring 7, when the pressure of the water inlet pipe 12 is less than or equal to the pressure of the cavity 4 and the pressure of the spring 7, the movable block 2 cannot be lifted upwards, normal water flowing cannot be performed, when the pressure of the water inlet pipe 12 is greater than the pressure of the cavity 4 and the pressure of the spring 7, the movable block 2 can be lifted out of the flow port 140, and water can enter and exit the water outlet pipe 13 from the flow port 140.

Referring to fig. 1, as a modified specific embodiment, the movable assembly includes a movable plate 5, a telescopic spring 7, a nut 6, a spring 7 pressing plate, a screw 8, and a top cap 9, the movable plate 5 is fixed on the upper end of the movable block 2 through the nut 6, the movable plate 5 can move up and down in the valve cover 15, the telescopic spring 7 is fixed on the upper end of the movable plate 5, another connecting port of the telescopic spring 7 is fixed on the spring 7 pressing plate, the screw 8 is abutted against the top center of the spring 7 pressing plate, and the tail of the screw 8 is fixed on the top cap 9.

The acting force of the spring 7 can be adjusted through the threaded connection between the top cap 9 and the valve cover 15, namely, the top cap 9 moves up and down to drive the screw 8 and the spring 7 to move, so that the spring 7 provides different initial elastic forces.

Referring to fig. 1, as a modified embodiment, the movable plate 5 is provided at a side thereof with an annular sealing ring, which is in sealing contact with an inner side wall of the valve cover 15 when mounted on the movable plate 5.

The annular sealing ring is arranged to realize that only one pressure taking port of the pressure taking pipe 130 is arranged in the cavity 4.

Referring to fig. 1, as a modified embodiment, the top of the valve cover 15 is provided with a threaded head with external threads, the inner cavity of the top cap 9 is provided with a threaded groove with internal threads, and the threaded head is in threaded connection with the threaded groove in a matching manner.

Through the spiro union setting of hood 9 and valve gap 15, can drive screw 8 down when rotating hood 9 to extrude spring 7, consequently can realize the elasticity regulation of spring 7 through rotating hood 9 manually.

As a modified specific implementation mode, the pressure tapping pipe 130 is provided with a switch valve, and a filter sheet is detachably connected in the pressure tapping valve.

Through the closing of ooff valve, can manually adjust the size of cavity 4 internal pressure, and make through the setting of cassette, the gas or the liquid that flow to in the cavity 4 are cleaner, can not pollute water because of the dwell of overlength time.

Referring to fig. 2, as a modified embodiment, the flow port 140 and the bottom of the movable block 2 are provided with matched annular bosses 20.

Through the setting of annular boss 20, be favorable to more lifting up and putting down of movable block 2.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (6)

1. A novel pressure reducing valve is characterized in that: including valve body (1), valve gap (15) and hood (9), valve gap (15) are fixed in valve body (1) upper end, valve body (1) inside is equipped with baffle (14), cavity (10) and last cavity (11) down are cut apart into with the circulation passageway of valve body (1) bottom in baffle (14), cavity (10) left end intercommunication inlet channel (12) down, go up cavity (11) right-hand member intercommunication outlet conduit (13), circulation mouth (140) that run through around being equipped with on baffle (14), by movable block (2) shutoff in circulation mouth (140), the conflict of movable block (2) up end is equipped with diaphragm (3), diaphragm (3) upper end and valve body (1) vacuole formation (4), movable block (2) upper end connection activity subassembly, the activity subassembly top is fixed at hood (9) inner chamber lower extreme, hood (9) spiro union is in valve gap (15) upper end, the cavity (4) is communicated with the water outlet pipeline (13) through a pressure sampling pipe (130).

2. The novel pressure reducing valve as claimed in claim 1, wherein: the movable assembly comprises a movable plate (5), an expansion spring (7), a nut (6), a spring (7) pressing plate, a screw (8) and a top cap (9), the movable plate (5) is fixed at the upper end of the movable block (2) through the nut (6), the movable plate (5) can move up and down in the valve cover (15), the expansion spring (7) is fixed at the upper end of the movable plate (5), another connector of the expansion spring (7) is fixed on the pressing plate of the spring (7), the screw (8) is abutted to the center of the top surface of the pressing plate of the spring (7), and the tail of the screw (8) is fixed on the top cap (9).

3. The novel pressure reducing valve as claimed in claim 2, wherein: the side of fly leaf (5) is equipped with ring packing, ring packing when installing on fly leaf (5) with valve gap (15) inside wall sealing contact.

4. A novel pressure reducing valve according to claim 1, 2 or 3, wherein: the valve cap (15) is characterized in that a threaded head with external threads is arranged at the top of the valve cap (15), an inner cavity of the top cap (9) is a thread groove with internal threads, and the threaded head is in threaded connection with the thread groove in a matching mode.

5. A novel pressure reducing valve according to claim 1, 2 or 3, wherein: the pressure tapping pipe (130) is provided with a switch valve, and the pressure tapping pipe (130) is detachably connected with a filter sheet.

6. The novel pressure reducing valve as claimed in claim 1, wherein: the circulation port (140) and the bottom of the movable block (2) are provided with annular bosses (20) which are matched with each other.

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