CN212155927U

CN212155927U - Stainless steel check valve

Info

Publication number: CN212155927U
Application number: CN202020887054.5U
Authority: CN
Inventors: 赖金蜂
Original assignee: Zhejiang Qianjun Valve Technology Co ltd
Current assignee: Zhejiang Qianjun Valve Technology Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-12-15
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a stainless steel check valve, its technical scheme main points are: the valve comprises a valve body and a valve cover, wherein a liquid inlet and a liquid outlet are respectively formed in the left side and the right side of the valve body, a flange plate is integrally formed at the upper end of the valve body, a valve cover is fixedly arranged at the upper end of the flange plate, a guide sleeve is fixedly arranged in the middle of the valve cover, the lower end in the guide sleeve is slidably connected with a valve rod, a valve core is fixedly arranged at the bottom of the valve rod, a valve seat is fixedly arranged in the valve body, a guide rod is rotatably connected at the upper end in the guide sleeve and comprises a lower moving rod, a threaded rod and an upper moving rod, a first sealing ring is fixedly arranged at the lower end of the lower; the utility model provides a case among the current check valve can rise to the biggest height after receiving the great pressure in lower part at the during operation, the problem of the inside liquid velocity of flow of operating personnel's uncontrollable check valve.

Description

Stainless steel check valve

Technical Field

The utility model belongs to the technical field of the valve equipment technique and specifically relates to a stainless steel check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end and flows out from the outlet end. The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards.

The valve core in the existing stainless steel check valve can rise to the maximum height after receiving the large pressure of the lower part when working, and at the moment, an operator can not control the height of the valve core, so that the flow rate of liquid in the check valve can not be controlled as required, and certain inconvenience is brought to production and processing.

SUMMERY OF THE UTILITY MODEL

To the problem of mentioning in the background art, the utility model aims at providing a stainless steel check valve to the case among the current check valve that mentions in the solution background art can rise to the biggest height after receiving the great pressure in lower part at the during operation, the problem of the inside liquid velocity of flow of operating personnel uncontrollable check valve.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a stainless steel check valve comprises a valve body and a valve cover, wherein a liquid inlet and a liquid outlet are respectively formed in the left side and the right side of the valve body, a flange plate is integrally formed at the upper end of the valve body, the valve cover is fixedly arranged at the upper end of the flange plate, a guide sleeve is fixedly arranged in the middle of the valve cover and penetrates through the valve cover, a through hole is formed in the middle of the guide sleeve, a valve rod is slidably connected to the lower end of the inside of the guide sleeve, a valve core is fixedly arranged at the bottom of the valve rod, the cross section of the valve core is circular, a valve seat is fixedly arranged in the position, corresponding to the valve core, of the inside of the valve body, a guide rod is rotatably connected to the upper end of the inside of the guide sleeve and comprises a lower moving rod, a threaded rod and an upper moving rod, the lower moving rod, the threaded, the upper end sleeve of going up the movable rod is equipped with the handle, go up the movable rod with handle passes through gland nut fixed connection.

Furthermore, the outer end of the threaded rod is provided with an external thread, and the inner part of the guide sleeve is provided with an internal thread at a position corresponding to the external thread.

Furthermore, a plurality of convex parts are integrally formed at the outer end of the handle.

Further, the flange plate is fixedly connected with the valve cover through a plurality of double-end studs, and the upper end and the lower end of each double-end stud are rotatably connected with a fastening nut.

Further, a sealing gasket is fixedly arranged between the flange plate and the valve cover.

Furthermore, a second sealing ring is fixedly arranged at the upper end of the valve seat at a position corresponding to the valve core, and the first sealing ring and the second sealing ring are made of nitrile rubber.

To sum up, the utility model discloses mainly have following beneficial effect:

the utility model discloses a rotate in the inside upper end of uide bushing and be connected with the guide bar, the guide bar includes lower transfer arm, threaded rod and upper transfer arm, the upper pot head of upper transfer arm is equipped with the handle, upper transfer arm and handle pass through gland nut fixed connection, when case in the check valve can rise to the biggest height after receiving the great pressure in lower part at the during operation, operating personnel can adjust the position of guide bar in the uide bushing through rotating the handle to can control the case and rise the biggest height, further reach the effect of controlling the inside liquid flow rate of check valve; the lower end of the lower moving rod is fixedly provided with the first sealing ring, the first sealing ring is connected with the guide sleeve in an interference fit mode, and the sealing performance inside the guide sleeve can be guaranteed.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a schematic structural view of the handle of the present invention;

fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure: 1. a valve body; 2. a liquid inlet; 3. a liquid outlet; 4. a flange plate; 5. a valve cover; 6. a guide sleeve; 601. an internal thread; 7. a valve stem; 8. a valve core; 9. a valve seat; 10. a guide bar; 11. moving the rod downwards; 12. a threaded rod; 1201. an external thread; 13. moving the rod upwards; 14. a first seal ring; 15. a handle; 1501. a projection; 16. a compression nut; 17. a stud; 18. fastening a nut; 19. sealing gaskets; 20. and a second seal ring.

Detailed Description

In order to make the objects and technical solutions of the present invention clear and fully described, and the advantages thereof more clearly understood, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and "sixth" 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.

Example 1

Referring to fig. 1-3, a stainless steel check valve comprises a valve body 1 and a valve cover 5, wherein the valve body 1 and the valve cover 5 are made of stainless steel, a liquid inlet 2 and a liquid outlet 3 are respectively formed on the left side and the right side of the valve body 1, the liquid inlet 2 is communicated with the liquid outlet 3, a flange plate 4 is integrally formed on the upper end of the valve body 1, the valve cover 5 is fixedly arranged on the upper end of the flange plate 4, a guide sleeve 6 is fixedly arranged in the middle of the valve cover 5, the guide sleeve 6 penetrates through the valve cover 5, a through hole is formed in the middle of the guide sleeve 6, a valve rod 7 is slidably connected to the lower end inside the guide sleeve 6, the valve rod 7 is in clearance fit with the guide sleeve 6 to ensure that the valve rod 7 can freely slide inside the guide sleeve 6, a valve core 8 is fixedly arranged at the bottom of the valve rod 7, the inside upper end of uide bushing 6 is rotated and is connected with guide bar 10, guide bar 10 includes lower moving rod 11, threaded rod 12 and upper moving rod 13, lower moving rod 11, threaded rod 12 and upper moving rod 13 integrated into one piece set up, lower moving rod 11 and uide bushing 6 clearance fit ensure that it can be in the inside free slip of uide bushing 6, the fixed first sealing washer 14 that is provided with of lower extreme of lower moving rod 11, the inside leakproofness of uide bushing 6 has been improved, the pot head of upper end of upper moving rod 13 is equipped with handle 15, operating personnel can control the degree of depth of guide bar 10 in uide bushing 6 through rotating handle 15, upper moving rod 13 and handle 15 pass through gland nut 16 fixed connection, prevent that handle 15 from becoming flexible.

Referring to fig. 1 and 3, the outer end of the threaded rod 12 is cut with an external thread 1201, and the inside of the guide sleeve 6 is cut with an internal thread 601 at a position corresponding to the external thread 1201, ensuring that the guide rod 10 can be rotated inside the guide sleeve 6.

Referring to fig. 1 and 3, a plurality of protrusions 1501 are integrally formed at the outer end of the handle 15, and the plurality of protrusions 1501 can increase the friction between the handle 15 and the hand, thereby facilitating the rotation of the handle 15 by the operator.

Referring to fig. 1 and 2, the flange 4 and the valve cover 5 are fixedly connected through a plurality of studs 17, and the upper and lower ends of the studs 17 are rotatably connected with fastening nuts 18, so that the stability of connection between the valve cover 5 and the valve body 1 can be ensured.

Referring to fig. 1 and 2, a sealing gasket 19 is fixedly arranged between the flange 4 and the bonnet 5 to ensure the sealing performance of the valve body 1 and prevent air from entering the interior of the valve body 1 along a gap between the flange 4 and the bonnet 5.

Referring to fig. 1 and 2, the upper end of the valve seat 9 is fixedly provided with a second sealing ring 20 at a position corresponding to the valve core 8, which is beneficial to ensuring the sealing performance inside the valve body 1, and the first sealing ring 14 and the second sealing ring 20 are made of nitrile rubber, which has excellent oil resistance, high wear resistance, high heat resistance and high bonding force.

The utility model discloses when using, in normal work, when the pressure below case 8 is greater than the pressure above case 8, liquid can flow in along inlet 2, upwards jack-up case 8 back along liquid outlet 3 flows out, when liquid refluence or not circulate, the pressure below case 8 is less than the pressure of case top 8 this moment, case 8 descends, the valve is closed, liquid can't flow to inlet 2 along liquid outlet 3, the effect of non return has been played, when case 8 in the check valve receives the great pressure in lower part at the during operation and can rise to the biggest height, operating personnel can adjust the position of guide bar 10 in uide bushing 6 through rotating handle 15, thereby can control the biggest height that case 8 rises, further reach the effect of controlling the inside liquid flow rate of check valve; through the fixed first sealing washer 14 that is provided with of lower carriage lever 11's lower extreme, first sealing washer 14 is connected with 6 interference fit of uide bushing, can guarantee the inside leakproofness of uide bushing 6, and easy operation has higher practicality.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a stainless steel check valve, includes valve body (1) and valve gap (5), its characterized in that: the valve is characterized in that a liquid inlet (2) and a liquid outlet (3) are respectively formed in the left side and the right side of the valve body (1), a flange plate (4) is integrally formed at the upper end of the valve body (1), the valve cover (5) is fixedly arranged at the upper end of the flange plate (4), a guide sleeve (6) is fixedly arranged in the middle of the valve cover (5), the guide sleeve (6) penetrates through the valve cover (5), a through hole is formed in the middle of the guide sleeve (6), a valve rod (7) is slidably connected to the lower end of the inside of the guide sleeve (6), a valve core (8) is fixedly arranged at the bottom of the valve rod (7), the cross section of the valve core (8) is circular, a valve seat (9) is fixedly arranged in the position corresponding to the valve core (8) in the inside of the valve body (1), a guide rod (10) is rotatably connected to the upper end of the inside of the guide, Threaded rod (12) and last moving rod (13), down moving rod (11) threaded rod (12) with go up moving rod (13) integrated into one piece setting, the lower extreme of moving rod (11) is fixed down and is provided with first sealing washer (14), the last pot head of going up moving rod (13) is equipped with handle (15), go up moving rod (13) with handle (15) are through gland nut (16) fixed connection.

2. The stainless steel check valve of claim 1, wherein: the outer end of the threaded rod (12) is provided with an external thread (1201), and the inner part of the guide sleeve (6) is provided with an internal thread (601) at a position corresponding to the external thread (1201).

3. The stainless steel check valve of claim 1, wherein: the outer end of the handle (15) is integrally formed with a plurality of protrusions (1501).

4. The stainless steel check valve of claim 1, wherein: the flange plate (4) is fixedly connected with the valve cover (5) through a plurality of double-end studs (17), and the upper end and the lower end of each double-end stud (17) are rotatably connected with fastening nuts (18).

5. The stainless steel check valve of claim 1, wherein: and a sealing gasket (19) is fixedly arranged between the flange plate (4) and the valve cover (5).

6. The stainless steel check valve of claim 1, wherein: a second sealing ring (20) is fixedly arranged at the upper end of the valve seat (9) at a position corresponding to the valve core (8), and the first sealing ring (14) and the second sealing ring (20) are made of nitrile rubber.