CN210218816U

CN210218816U - Novel pressure-maintaining pressure reducing valve

Info

Publication number: CN210218816U
Application number: CN201920947293.2U
Authority: CN
Inventors: Xin Fang; 方鑫
Original assignee: Fujian Ruiruipo Fluid Equipment Manufacturing Co Ltd
Current assignee: Fujian Ruiruipo Fluid Equipment Manufacturing Co Ltd
Priority date: 2019-06-21
Filing date: 2019-06-21
Publication date: 2020-03-31
Anticipated expiration: 2029-06-21

Abstract

The utility model provides a novel pressure-maintaining pressure reducing valve which has simple structure and low production cost, can quickly reduce the opening degree of an opening and closing piece and protect a pipeline behind a valve, and comprises a valve body, the valve body is provided with a water inlet channel and a water outlet channel, a valve seat is arranged between the water inlet channel and the water outlet channel, the valve body can be vertically lifted and is provided with a first sliding block which is arranged above the valve seat, the lower end part of the first sliding block can be matched with the valve seat to control the on-off of a medium between the water inlet channel and the water outlet channel, a control cavity is formed between the upper end surface of the first sliding block and the valve body, a plurality of first through holes for connecting an external pressure relief valve and a pressure reducing valve are arranged at the upper end part of the valve body, the first through hole is communicated with the control cavity, and the area of the upper end face of the first sliding block is larger than that of the lower end face of the first sliding block.

Description

Novel pressure-maintaining pressure reducing valve

Technical Field

The utility model relates to the technical field of valves, in particular to novel hold pressure reducing valve.

Background

The pressure-sustaining reducing valve adopts the opening degree of an opening and closing part in a control valve body to adjust the flow of a medium, reduces the pressure of the medium, adjusts the opening degree of the opening and closing part by means of the action of the pressure behind the valve, keeps the pressure behind the valve within a certain range, keeps the pressure at an outlet within a set range under the condition that the pressure at the inlet is continuously changed, and protects the subsequent life production appliances. The pressure maintaining and reducing valve is adjusted through the pressure reducing valve and the pressure reducing valve, the valve opening is adjusted, a pressure reducing inlet of the pressure reducing valve is communicated with a front valve pipeline and a control cavity of the pressure maintaining and reducing valve, a pressure reducing outlet of the pressure reducing valve is communicated with a rear valve pipeline of the pressure maintaining and reducing valve, a pressure reducing inlet of the pressure reducing valve is communicated with the front valve pipeline and the control cavity of the pressure maintaining and reducing valve, a pressure reducing outlet of the pressure reducing valve is communicated with the rear valve pipeline of the pressure maintaining and reducing valve, when the rear valve pressure is small, the pressure of the control cavity is reduced, the opening of an opening and closing part of the pressure maintaining and reducing valve is increased, and a medium flows; when the pressure of the pipeline behind the valve is overlarge, the pressure in the control cavity is increased, and the opening degree of the opening and closing piece of the pressure maintaining and reducing valve is reduced. In the pressure-maintaining pressure-reducing valve regulated by the telescopic opening and closing piece, when the pressure of a pipeline behind the valve is high, a medium needs to flow into the control cavity to reduce the opening degree of the opening and closing piece, the speed is slow, and the adjustment cannot be performed in time, so that a spring for accelerating the closing speed of the opening and closing piece is arranged between the opening and closing piece and a valve body of the pressure-maintaining pressure-reducing valve by an industry person, but the mode has the following authority that 1, the spring is easily corroded after being soaked in the medium for a long time; 2. when the opening and closing member is formed long, the spring is easily lost.

SUMMERY OF THE UTILITY MODEL

Therefore, to foretell problem, the utility model provides a simple structure, low in production cost can reduce the opening and closing member aperture fast, the novel pressure reducing valve of holding of pipeline behind the protection valve.

In order to achieve the technical problem, the utility model discloses the solution that takes is novel hold pressure-reducing valve, including the valve body, inlet channel and outlet channel have been seted up on the valve body, be provided with the disk seat between inlet channel and the outlet channel, but oscilaltion is provided with first sliding block on the valve body, first sliding block set up in the disk seat top, under the first sliding block the tip can with disk seat cooperation control medium break-make between inlet channel and the outlet channel, the up end of first sliding block with form the control chamber between the valve body, a plurality of first through-holes that are used for connecting outside relief valve and relief pressure valve are seted up to the upper end of valve body, first through-hole with the control chamber is linked together, the area of first position up end is greater than the area of terminal surface under the first sliding block.

The further improvement is that: the fixed communicating pipe that is provided with of lower tip of first sliding block, communicating pipe can with the water outlet channel is linked together, communicating pipe fixed set up in the lower tip of first sliding block, communicating pipe can slide and wear to locate the disk seat, a plurality of second through-holes have been seted up to the week side of communicating pipe, each the second through-hole with water inlet channel and communicating pipe are linked together.

The further improvement is that: the first sliding block and the communicating pipe are both provided with inner cavities, and each second through hole is communicated with the inner cavity of the communicating pipe.

The further improvement is that: the first sliding block is fixedly provided with a guide rod, and the valve body is provided with a guide hole for the guide rod to pass through.

The further improvement is that: the valve body includes valve body and lower valve body, go up the valve body and pass through the screw rod with lower valve body and be connected, water inlet channel, water outlet channel, disk seat set up in lower valve body, first sliding block slidable set up in go up the valve body.

The further improvement is that: go up the valve body including adapter sleeve, valve gap, adapter sleeve set up in the upper end of valve body down, the valve gap pass through the screw rod set up in the adapter sleeve upper end, first sliding block can slide set up in the adapter sleeve, first through-hole is seted up in the valve gap.

The further improvement is that: the valve body is positioned around the water inlet channel and the water outlet channel and is provided with a flange plate used for connecting an external pipeline.

By adopting the technical scheme, the beneficial effects of the utility model are that: 1. when the pressure of the pipeline behind the valve of the novel pressure-maintaining pressure-reducing valve is higher, the opening degree of the opening and closing piece can be rapidly reduced or the valve can be closed, so that the effect of protecting the pipe fittings on the pipeline behind the valve is achieved; 2. the pressure difference generated by the area difference is acted on, so that the change of the elastic force of the spring caused by the change of the stroke or the failure of the spring caused by the overlong stroke is avoided.

Drawings

Fig. 1 is a schematic structural view of the novel pressure-maintaining and reducing valve of the embodiment of the present invention.

Detailed Description

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Example (b):

referring to fig. 1, the embodiment of the present invention discloses a novel pressure-maintaining pressure-reducing valve, which comprises a valve body 1, wherein the valve body 1 comprises a lower valve body 12, a connecting sleeve 11 and a valve cover 14, the connecting sleeve 11 is arranged at the upper end of the lower valve body 12 through a screw, the valve cover 14 is arranged at the upper end of the connecting sleeve 11 through a screw, a water inlet channel 17 and a water outlet channel 18 are arranged on the lower valve body 12, a valve seat 13 is arranged between the water inlet channel 17 and the water outlet channel 18, a first sliding block 3 is arranged on the connecting sleeve 11 in a way of being capable of ascending and descending, a communicating pipe 2 is fixedly arranged on the lower end surface of the first sliding block 3, the communicating pipe 2 is slidably arranged on the valve seat 13, a plurality of second through holes 21 are arranged on the peripheral side of the communicating pipe 2, the second through holes 21 are communicated with the communicating pipe 2 and the water inlet channel, the second through hole 21 can with inlet channel 17, outlet channel 18 are linked together, the lower tip of first sliding block 3 can with disk seat 13 cooperation control the medium break-make between inlet channel 17 and the outlet channel 18, first sliding block 3 can slide from top to bottom set up in valve body 1, the up end area of first sliding block 3 is greater than the lower terminal surface area of communicating pipe 2, the up end of first sliding block 3 with form control chamber 16 between the valve body 1, set up two first through holes 15 that are used for connecting outside relief valve and relief pressure valve on the valve gap 14, first through hole 15 with control chamber 16 is linked together, be provided with the sealing washer between the lower tip of connecting sleeve 11 and the first sliding block 3, the up end of first sliding block 3 with be provided with the sealing washer between the connecting sleeve 11.

In order to reduce the mass of first sliding block 3 and communication pipe 2, the response speed of first sliding block 3 and communication pipe 2 is increased: first sliding block 3 and communicating pipe 2 are both seted up the inner chamber, each the second through-hole 21 with the inner chamber of communicating pipe 2 is linked together.

In order to make the first sliding block 3 slide more smoothly and smoothly: the first sliding block 3 is fixedly provided with a guide rod 31, and the valve cover 14 is provided with a guide hole for the guide rod 31 to pass through.

In order to facilitate installation: the valve body 1 is provided with flanges surrounding the water inlet channel 17 and the water outlet channel 18 for connecting an external pipeline 1'.

The pressure relief valve and the pressure relief valve stop releasing pressure and relieving pressure when a pipeline behind the valve is larger, the water pressure in the control cavity 16 is continuously increased at the moment, the first slider and the second slider are pushed to slide downwards, the opening degree is reduced, the speed of a medium passing through the valve seat 13 is reduced, even the valve seat 13 is closed, the area of the upper end face of the first slider 3 is larger than that of the lower end face of the communicating pipe 2, the pressure of the medium on the upper end face of the first slider 3 is larger than that of the medium on the lower end face of the communicating pipe 2, the opening degree is rapidly reduced, even the valve seat 13 is closed, each pipe fitting in the pipeline behind the valve can be effectively protected practically, the damage caused by the overlarge pressure is avoided, the area of the upper end face of the first slider 3 is larger than that of the lower end face, and the medium pressure on the upper end face of the first slider 3 is larger than that of the lower end face, the speed of closing the first sliding block 3 or reducing the opening degree of the valve port is increased.

Based on the foregoing, in practical operation, the first through hole 15 may also be one.

Modifications and variations of the present invention are within the scope of the claims and are not limited by the disclosure of the embodiments.

Claims

1. Novel hold pressure relief pressure valve, including the valve body, water inlet channel and water outlet channel have been seted up on the valve body, its characterized in that: be provided with the disk seat between water inlet channel and the water outlet channel, but the oscilaltion is provided with first sliding block on the valve body, first sliding block set up in the disk seat top, under the first sliding block tip can with disk seat cooperation control the medium break-make between water inlet channel and the water outlet channel, the up end of first sliding block with form the control chamber between the valve body, a plurality of first through-holes that are used for connecting outside relief valve and relief pressure valve are seted up to the upper end of valve body, first through-hole with the control chamber is linked together, the area of first sliding block position up end is greater than the area of terminal surface under the first sliding block.

2. The novel pressure-sustaining and pressure-reducing valve according to claim 1, characterized in that: the fixed communicating pipe that is provided with of lower tip of first sliding block, communicating pipe can with the water outlet channel is linked together, communicating pipe fixed set up in the lower tip of first sliding block, communicating pipe can slide and wear to locate the disk seat, a plurality of second through-holes have been seted up to the week side of communicating pipe, each the second through-hole with water inlet channel and communicating pipe are linked together.

3. The novel pressure-sustaining and pressure-reducing valve according to claim 2, characterized in that: the first sliding block and the communicating pipe are both provided with inner cavities, and each second through hole is communicated with the inner cavity of the communicating pipe.

4. The novel pressure-sustaining and pressure-reducing valve according to claim 1, characterized in that: the first sliding block is fixedly provided with a guide rod, and the valve body is provided with a guide hole for the guide rod to pass through.

5. The novel pressure-sustaining and pressure-reducing valve according to claim 1, characterized in that: the valve body includes valve body and lower valve body, go up the valve body and pass through the screw rod with lower valve body and be connected, water inlet channel, water outlet channel, disk seat set up in lower valve body, first sliding block slidable set up in go up the valve body.

6. The novel pressure-sustaining and pressure-reducing valve according to claim 5, characterized in that: go up the valve body including adapter sleeve, valve gap, adapter sleeve set up in the upper end of valve body down, the valve gap pass through the screw rod set up in the adapter sleeve upper end, first sliding block can slide set up in the adapter sleeve, first through-hole is seted up in the valve gap.

7. The novel pressure-sustaining and pressure-reducing valve according to claim 1, characterized in that: the valve body is positioned around the water inlet channel and the water outlet channel and is provided with a flange plate used for connecting an external pipeline.