CN214743581U

CN214743581U - High-pressure back pressure valve

Info

Publication number: CN214743581U
Application number: CN202120991923.3U
Authority: CN
Inventors: 张守蕾; 刘安兵; 胡明军; 刘雨奇
Original assignee: Rizhao Hengtong Water Treatment Equipment Co ltd
Current assignee: Rizhao Hengtong Water Treatment Equipment Co ltd
Priority date: 2021-05-11
Filing date: 2021-05-11
Publication date: 2021-11-16
Anticipated expiration: 2031-05-11

Abstract

The utility model discloses a high-pressure back pressure valve relates to back pressure valve technical field, including last valve body, lower valve body, spring, briquetting and slider, go up the inside inner chamber that is equipped with of valve body, be equipped with the spring in the inner chamber, the upper end of spring is equipped with the briquetting, and the lower extreme is equipped with the slider, and the external diameter of slider and briquetting is less than the diameter of last valve body inner chamber, is equipped with the recess on the outer lane of slider, is equipped with O type sealing washer in the recess, and the bottom of slider is equipped with seal gasket, and the top middle part of going up the valve body sets up adjusting bolt, and adjusting bolt runs through the middle part contact of last valve body and briquetting. The utility model adjusts the flow by the expansion of the sliding block and the spring in the inner cavity of the upper valve body, and the sliding block expands towards the inner side of the spring when in high pressure, so that the flow can be increased, and the high-pressure valve is suitable for high-pressure working conditions; the sealing member adopts the PTEE material, can be high temperature resistant, high corruption, and application scope is wider, consequently the utility model discloses can adapt to the operating mode of high pressure, high temperature and high corruption, more have spreading value.

Description

High-pressure back pressure valve

Technical Field

The utility model relates to a back pressure valve technical field specifically is a high pressure back pressure valve.

Background

The back pressure valve is commonly used at the outlet of a metering pump, most of the existing back pressure valves use a diaphragm structure, the production cost is low, the structure is simple, but the pressure resistance is poor, the high temperature resistance is poor, the back pressure valve is generally suitable for the working condition that the pressure does not exceed 0.3MPa, and the back pressure valve used under the pressure above 2MPa or the high temperature working condition is very little. Therefore, the market is in need of designing a back pressure valve suitable for high-pressure and high-temperature working conditions.

SUMMERY OF THE UTILITY MODEL

In view of not enough and the defect that exists among the prior art, the utility model provides a high pressure back pressure valve adopts piston structure for solve the problem that back pressure valve commonly used can not bear high pressure, high temperature operating mode.

In order to solve the technical problem, the utility model discloses a following technical scheme: a high pressure back pressure valve characterized by: including last valve body, lower valve body, spring, briquetting and slider, go up the inside inner chamber that is equipped with of valve body, be equipped with the spring in the inner chamber, the upper end of spring is equipped with the briquetting, and the lower extreme is equipped with the slider, the external diameter of slider and briquetting is less than the diameter of last valve body inner chamber, be equipped with the recess on the outer lane of slider, be equipped with O type sealing washer in the recess, the bottom of slider is equipped with seal gasket, the top middle part of going up the valve body sets up adjusting bolt, adjusting bolt run through go up the valve body with the middle part contact of briquetting.

As a further improvement of the present invention, the two ends of the lower valve body are respectively an inlet and an outlet, the other end of the inlet and the other end of the outlet are both disposed on the top end face of the lower valve body, the fluid in the inlet is pushed open through the top the slider is linked with the outlet, the center line of the inlet on the top end face is in line with the center line of the upper valve body and the lower valve body.

As a further improvement, the top of the adjusting bolt is provided with a hand wheel, the hand wheel is arranged into an inverted U-shaped structure, and the lower edge of the hand wheel covers the top end of the upper valve body.

As a further improvement of the utility model, be equipped with the ring channel on the valve body down, be equipped with the sealing washer in the ring channel, the ring channel sets up the outside at exit channel.

As a further improvement of the present invention, the sealing gasket is fixed to the bottom surface of the slider by screws.

As a further improvement of the utility model, the briquetting with the slider with spring contact department all is equipped with the lug, and the lug is used for supporting spring.

As a further improvement of the present invention, the upper valve body and the lower valve body are connected by a bolt.

As a further improvement of the utility model, the sealing washer O type sealing washer with seal gasket all adopts the PTEE material.

Compared with the prior art, the utility model discloses the beneficial effect who has does: the utility model adjusts the flow by the expansion of the sliding block and the spring in the inner cavity of the upper valve body, and the sliding block expands towards the inner side of the spring when in high pressure, so that the flow can be increased, and the high-pressure valve is suitable for high-pressure working conditions; the sealing member adopts the PTEE material, can be high temperature resistant, high corruption, and application scope is wider, consequently the utility model discloses can adapt to the operating mode of high pressure, high temperature and high corruption, more have spreading value.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1. the valve comprises a hand wheel, 2. an upper valve body, 3. a pressing block, 4. a spring, 5. a sliding block, 6. an O-shaped sealing ring, 7. a sealing gasket, 8. an adjusting bolt, 9. a lower valve body, 10. a sealing ring, 11. an outlet and 12. an inlet.

It is noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. 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, but 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Detailed Description

In order to make the technical solution and the advantages of the present invention more clear and more obvious, the present invention is further described in detail with reference to the accompanying drawings and the specific embodiments, it should be understood that the specific embodiments described herein are only used for understanding the present invention, and are not used for limiting the present invention, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

As shown in figure 1, the high-pressure back pressure valve comprises an upper valve body 2, a lower valve body 9, a spring 4, a pressing block 3 and a sliding block, wherein the upper valve body and the lower valve body are connected through a bolt and are provided with a sealing ring 10, an inner cavity is arranged inside the upper valve body 2, the spring 4 is arranged in the inner cavity, the pressing block 3 is arranged at the upper end of the spring 4, the sliding block 5 is arranged at the lower end of the spring, the outer diameters of the sliding block 5 and the pressing block 3 are smaller than the diameter of the inner cavity of the upper valve body 2, a groove is arranged on the outer ring of the sliding block 5, an O-shaped sealing ring 6 is arranged in the groove, a sealing gasket 7 fixed by a bolt is arranged at the bottom end of the sliding block 5, an adjusting bolt 8 is arranged in the middle of the top end of the upper valve body 2, the adjusting bolt 8 penetrates through the upper valve body 2 to be contacted with the middle of the pressing block 3, a hand wheel 1 is arranged at the top of the adjusting bolt 8, the hand wheel 1 is arranged in an inverted U-shaped structure, the lower edge of the hand wheel 1 covers the top end of the upper valve body 2, the adjusting bolt 8 can be used for adjusting bolt to be adjusted by rotating the hand wheel 1, meanwhile, the hand wheel 1 plays a dustproof role.

The two ends of the lower valve body 9 are respectively provided with an inlet 12 and an outlet 11, the other ends of the inlet 12 and the outlet 11 are arranged on the top end surface of the lower valve body 9, fluid in the inlet 12 is communicated with the outlet through the jacking sliding block 5, and the central line of the inlet 12 on the top end surface is on the same straight line with the central lines of the upper valve body 2 and the lower valve body 9.

When the pressure regulating valve is used, liquid enters the backpressure valve from the inlet, the sliding block compresses the spring according to the pressure, after the sliding block 5 slides, the liquid enters from the inlet 12 and flows out from the outlet 11, when the pressure is small, the sliding block 5 can retract, the flow can be regulated according to the pressure, when the pressure is large, the sliding block 5 can slide to regulate the balance pressure, and therefore the pressure regulating valve can adapt to the high-pressure working condition.

The sealing gasket 7, the sealing ring 10 and the O-shaped sealing ring 6 are made of PTEE materials and can bear the corrosion of high-corrosion liquid. The integrity of the product is protected.

In practical tests, the reliable working pressure can reach 10MPa, the upper limit of the common temperature is 170 ℃, and the maximum use temperature is 200 ℃.

Claims

1. A high pressure back pressure valve characterized by: including last valve body, lower valve body, spring, briquetting and slider, go up the inside inner chamber that is equipped with of valve body, be equipped with the spring in the inner chamber, the upper end of spring is equipped with the briquetting, and the lower extreme is equipped with the slider, the external diameter of slider and briquetting is less than the diameter of last valve body inner chamber, be equipped with the recess on the outer lane of slider, be equipped with O type sealing washer in the recess, the bottom of slider is equipped with seal gasket, the top middle part of going up the valve body sets up adjusting bolt, adjusting bolt run through go up the valve body with the middle part contact of briquetting.

2. A high pressure back pressure valve according to claim 1, wherein: the two ends of the lower valve body are respectively provided with an inlet and an outlet, the other ends of the inlet and the outlet are arranged on the top end face of the lower valve body, fluid in the inlet is communicated with the outlet through jacking the sliding block, and the center line of the inlet on the top end face is on the same straight line with the center lines of the upper valve body and the lower valve body.

3. A high pressure back pressure valve according to claim 1, wherein: the top of adjusting bolt is equipped with the hand wheel, the hand wheel sets up to the U type structure of invering, and the lower edge of hand wheel covers the top of going up the valve body.

4. A high pressure back pressure valve according to claim 1, wherein: the lower valve body is provided with an annular groove, a sealing ring is arranged in the annular groove, and the annular groove is arranged on the outer side of the outlet channel.

5. A high pressure back pressure valve according to claim 1, wherein: the sealing gasket is fixed on the bottom surface of the sliding block through screws.

6. A high pressure back pressure valve according to claim 1, wherein: the pressing block and the contact position of the sliding block and the spring are both provided with a convex block, and the convex block is used for supporting the spring.

7. A high pressure back pressure valve according to claim 1, wherein: the upper valve body is connected with the lower valve body through a bolt.

8. A high pressure back pressure valve according to claim 4, characterized in that: the sealing ring, the O-shaped sealing ring and the sealing gasket are all made of PTEE materials.