CN211039729U

CN211039729U - Prevent partial relief pressure valve with spacing protection

Info

Publication number: CN211039729U
Application number: CN201922215257.XU
Authority: CN
Inventors: 姚武; 宗诚
Original assignee: Shanghai Jiahui Fluid Engineering Technology Co ltd
Current assignee: Shanghai Jiahui Fluid Engineering Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-07-17
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a prevent partial pressure reducing valve with spacing protection, which comprises a valve body, the upper end of valve body is pegged graft and is fixed with the cylinder liner, be provided with first compression spring in the cylinder liner, first compression spring's lower extreme fixed mounting has the connecting plate, the inside fixed mounting of valve body has the cover block, the inside sliding connection of cover block has the movable block, the connecting plate is contradicted in the upper end of movable block, first cavity has been seted up to the inside of valve body, the inside of first cavity is provided with the valve rod. The valve rod comprises a jacking portion, a connecting portion and a plug, the jacking portion connecting portion and the plug are arranged to be of an integral structure, the upper end and the lower end of the valve rod are limited by the limiting blocks and the sealing blocks, the valve rod cannot deviate from the valve body when moving up and down, and the pressure regulating failure is avoided to a certain extent; through being provided with the filter screen in the one end of air inlet, filtered impurity and particulate matter effectively, increased the decompression and reduced life.

Description

Prevent partial relief pressure valve with spacing protection

Technical Field

The utility model relates to a relief pressure valve technical field, concretely relates to prevent partial relief pressure valve with spacing protection.

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 the medium. 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 ejector rod and the valve rod of the existing pressure reducing valve are designed in a split mode, the phenomenon that the ejector rod bends is found in the actual use process, and the valve rod is easy to deviate from a valve seat, so that pressure regulation failure is caused; the inlet does not have any filter equipment, easily causes impurity and particulate matter to get into and damages the disk seat, causes the pressure reducer to damage, consequently, we provide one kind and have spacing protection prevent inclined to one side relief pressure valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent partial relief pressure valve with spacing protection effectively avoids the valve rod skew, the crooked phenomenon in ejector pin top to reduce impurity and particulate matter as far as to the damage of disk seat, with the problem of proposing in solving above-mentioned background art.

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

an anti-deviation pressure reducing valve with limiting protection comprises a valve body, wherein a cylinder sleeve is fixedly inserted at the upper end of the valve body, a first compression spring is arranged in the cylinder sleeve, a connecting plate is fixedly arranged at the lower end of the first compression spring, a sleeve block is fixedly arranged in the valve body, a movable block is slidably connected in the sleeve block, the connecting plate abuts against the upper end of the movable block, a first cavity is formed in the valve body, a valve rod is arranged in the first cavity, the valve rod is in sliding clearance fit with the first cavity, the upper end of the valve rod abuts against the lower end of the movable block, a second cavity is formed at the lower end of the valve body, a second compression spring is arranged in the second cavity, the upper end of the second compression spring abuts against the lower end of the valve rod, an air inlet and an air outlet are respectively formed in the side wall of the valve body, and the air inlet is communicated with, and one end of the air inlet is provided with a filter screen, and the air outlet is communicated with the first cavity.

Preferably, annular grooves are formed in the outer walls of the sleeve block and the movable block, and sealing rubber rings are fixedly arranged inside the annular grooves.

Preferably, the valve rod comprises a jacking portion, a connecting portion and a plug, and the jacking portion connecting portion and the plug are arranged into an integral structure.

Preferably, the inside of first cavity inlays the dress and is fixed with and is used for the spacing stopper of counterpressure portion, the stopper sets up to the stopper that the through-hole was seted up to the upper end, and the top pressure portion slides and pegs graft in the inside of stopper.

Preferably, a sealing block is arranged inside the second cavity, an air hole is formed in the sealing block, the plug is a conical plug, and the plug is located under the air hole.

Preferably, the upper end of the cylinder sleeve is fixedly provided with an adjusting cap through a bolt, the interior of the cylinder sleeve is fixedly provided with a threaded sleeve, and one end of the bolt is in threaded connection with the threaded sleeve and extends to the upper end of the connecting plate.

To sum up, owing to adopted above-mentioned technique, the beneficial effects of the utility model are that:

the utility model discloses in, through setting up the valve rod including roof pressure portion, connecting portion and end cap, roof pressure portion connecting portion and end cap set up to a body structure to it is spacing through stopper and sealed piece to have divided at both ends about the valve rod, and the condition of skew valve body can not appear when the up-and-down motion in the valve rod, avoids taking place the pressure regulating inefficacy condition to a certain extent.

The utility model discloses in, be provided with the filter screen through the one end at the air inlet, filter impurity and particulate matter effectively, increased the decompression and reduced life.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;

fig. 3 is the schematic view of the valve rod structure of the present invention.

In the figure: 1. a valve body; 2. a cylinder liner; 3. a first compression spring; 4. a connecting plate; 5. sleeving blocks; 6. a movable block; 7. a first cavity; 8. a valve stem; 9. a second compression spring; 10. a second cavity; 11. an air inlet; 12. an air outlet; 13. a filter screen; 14. an annular groove; 15. sealing the rubber ring; 16. a jacking portion; 17. a connecting portion; 18. a plug; 19. a limiting block; 20. a sealing block; 21. air holes; 22. a bolt; 23. an adjusting cap; 24. a threaded sleeve.

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 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. 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 indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 by those skilled in the art according to the specific situation of the specification.

The utility model provides a prevent partial pressure reducing valve with spacing protection as shown in fig. 1-3, including valve body 1, the upper end of valve body 1 is pegged graft and is fixed with cylinder liner 2, be provided with first compression spring 3 in the cylinder liner 2, the lower extreme fixed mounting of first compression spring 3 has connecting plate 4, the upper end of cylinder liner 2 is through bolt 22 fixed mounting have adjusting cap 23, the inside fixed mounting of cylinder liner 2 has swivel nut 24, one end threaded connection of bolt 22 is in swivel nut 24 and extends to the upper end of connecting plate 4, the inside fixed mounting of valve body 1 has race block 5, the inside sliding connection of race block 5 has movable block 6, connecting plate 4 contradicts in the upper end of movable block 6, annular groove 14 has all been seted up on the outer wall of race block 5 and movable block 6, the inside fixed mounting of annular groove 14 has sealing rubber circle 15;

the valve body 1 is internally provided with a first cavity 7, a valve rod 8 is arranged inside the first cavity 7, the valve rod 8 comprises a jacking portion 16, a connecting portion 17 and a plug 18, the jacking portion 16, the connecting portion 17 and the plug 18 are arranged into an integral structure, the valve rod 8 is in sliding clearance fit with the first cavity 7, the upper end of the valve rod 8 abuts against the lower end of the movable block 6, a limiting block 19 for limiting the jacking portion 16 is fixedly embedded inside the first cavity 7, the limiting block 19 is arranged into a limiting block with a through hole at the upper end, the jacking portion 16 is inserted into the limiting block 19 in a sliding manner, the lower end of the valve body 1 is provided with a second cavity 10, a second compression spring 9 is arranged inside the second cavity 10, the upper end of the second compression spring 9 abuts against the lower end of the valve rod 8, a sealing block 20 is arranged inside the second cavity 10, an air hole 21 is arranged on the sealing block 20, and the plug 18 is positioned right below the air hole 21;

an air inlet 11 and an air outlet 12 are respectively arranged on the side wall of the valve body 1, the air inlet 11 is communicated with the second cavity 10, a filter screen 13 is arranged at one end of the air inlet 11, and the air outlet 12 is communicated with the first cavity 7. Effectively filters impurities and particles, increases pressure reduction and prolongs service life.

The working principle is as follows: when the valve rod 8 is used, the valve rod 8 comprises the top pressing part 16, the connecting part 17 and the plug 18, the connecting part of the top pressing part 16 and the plug 18 are arranged into an integral structure, the upper end and the lower end of the valve rod 8 are limited by the limiting blocks 19 and the sealing blocks 20, the valve rod 8 cannot deviate from the valve body 1 when moving up and down, and the pressure regulating failure is avoided to a certain extent; through being provided with filter screen 13 in the one end of air inlet 11, filtered impurity and particulate matter effectively, increased the decompression and reduced life.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Claims

1. The utility model provides a prevent partial pressure relief valve with spacing protection, includes valve body (1), its characterized in that: the upper end of the valve body (1) is fixedly connected with a cylinder sleeve (2) in an inserting manner, a first compression spring (3) is arranged in the cylinder sleeve (2), a connecting plate (4) is fixedly arranged at the lower end of the first compression spring (3), a sleeve block (5) is fixedly arranged in the valve body (1), a movable block (6) is connected in the sleeve block (5) in a sliding manner, the connecting plate (4) is abutted against the upper end of the movable block (6), a first cavity (7) is formed in the valve body (1), a valve rod (8) is arranged in the first cavity (7), the valve rod (8) is in sliding clearance fit with the first cavity (7), the upper end of the valve rod (8) is abutted against the lower end of the movable block (6), a second cavity (10) is arranged at the lower end of the valve body (1), a second compression spring (9) is arranged in the second cavity (10), the upper end of second compression spring (9) is contradicted in the lower extreme of valve rod (8), air inlet (11) and gas outlet (12) have been seted up on valve body (1) lateral wall respectively, air inlet (11) communicate in second cavity (10), and the one end of air inlet (11) is provided with filter screen (13), gas outlet (12) communicate in first cavity (7).

2. The pressure reducing valve with limit protection as claimed in claim 1, wherein: annular groove (14) have all been seted up on the outer wall of cover piece (5) and movable block (6), the inside fixed mounting of annular groove (14) has sealing rubber circle (15).

3. The pressure reducing valve with limit protection as claimed in claim 1, wherein: the valve rod (8) comprises a top pressing portion (16), a connecting portion (17) and a plug (18), and the connecting portion (17) and the plug (18) of the top pressing portion (16) are of an integrated structure.

4. The pressure reducing valve with limit protection as claimed in claim 1, wherein: the inner part of the first cavity (7) is embedded with a limiting block (19) which is used for limiting the jacking part (16), the limiting block (19) is arranged to be a limiting block with a through hole at the upper end, and the jacking part (16) is inserted in the limiting block (19) in a sliding mode.

5. The pressure reducing valve with limit protection as claimed in claim 3, wherein: a sealing block (20) is arranged in the second cavity (10), an air hole (21) is formed in the sealing block (20), the plug (18) is a conical plug, and the plug (18) is located right below the air hole (21).

6. The pressure reducing valve with limit protection as claimed in claim 1, wherein: the upper end of cylinder liner (2) has adjusting cap (23) through bolt (22) fixed mounting, the inside fixed mounting of cylinder liner (2) has swivel nut (24), the one end threaded connection of bolt (22) is in swivel nut (24) and extends to the upper end of connecting plate (4).