CN210949935U

CN210949935U - Governing valve with function of opening in advance

Info

Publication number: CN210949935U
Application number: CN201921399364.6U
Authority: CN
Inventors: 方福永
Original assignee: Zhejiang Lierduo Valve Co ltd
Current assignee: Zhejiang Lierduo Valve Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2020-07-07
Anticipated expiration: 2029-08-27

Abstract

The utility model relates to a governing valve with pre-opening function, which comprises a valve body, the valve gap, case and valve rod, the case includes the main valve core, vice case, compression spring, ring flange and connecting rod, be equipped with the dashpot on the main valve core, the side and the bottom surface of dashpot are equipped with inlet opening and apopore respectively, the upper end of dashpot is equipped with the connecting hole, connecting rod one end is mobile to pass the connecting hole and stretch into the dashpot in and link to each other with vice case, the other end links to each other with the ring flange outside arranging the main valve core, compression spring suit is on the connecting rod between vice case and the dashpot upper wall, the ring flange passes through. The utility model discloses have the function of opening in advance, when opening the valve, the valve rod can drive the auxiliary valve core earlier and shift up to switch on inlet opening and apopore on the case and carry out the pressure release, then drive the main valve core through the auxiliary valve core again and shift up and open the valve, effectively reduce the valve and open required power, make things convenient for the valve to open, avoid appearing the valve because medium pressure is too big open the difficulty or the card problem of dying.

Description

Governing valve with function of opening in advance

Technical Field

The utility model relates to the technical field of valves, concretely relates to governing valve with function of opening in advance.

Background

When the regulating valve is opened, the valve core moves upwards under the driving of the valve rod, the pressure applied to the valve core by a medium in the flow channel needs to be overcome, and when the medium is pressed too much, the problem that the valve is difficult to open or is blocked can occur.

SUMMERY OF THE UTILITY MODEL

To the not enough in the background art, the utility model provides a governing valve with pre-opening function.

The utility model adopts the technical proposal that: a regulating valve with a pre-opening function comprises a valve body, a valve cover, a valve core and a valve rod, wherein a valve seat is arranged in a flow passage of the valve body, one end of the valve rod can automatically rotate and penetrates through the valve cover to extend into the flow passage to be fixedly connected with the valve core, the valve core and the valve seat can be mutually matched to conduct or break the flow passage, the valve core comprises a main valve core, an auxiliary valve core, a compression spring, a flange plate and a connecting rod, a buffer groove is formed in the main valve core, a water inlet hole and a water outlet hole are formed in the side surface and the bottom surface of the buffer groove respectively, a connecting hole is formed in the upper end of the buffer groove, one end of the connecting rod can movably penetrate through the connecting hole to extend into the buffer groove to be connected with the auxiliary valve core, the other end of the connecting rod is arranged.

Furthermore, a first sealing step is arranged at the upper end of the flow passage hole in the valve seat, a conical hole is arranged at the lower end of the flow passage hole, and a second sealing step matched with the first sealing step and a conical plug matched with the conical hole are arranged on the main valve core.

Furthermore, a hemispherical plug is arranged on the lower end face of the auxiliary valve element and is positioned right above the water outlet hole.

Furthermore, the outer wall of the auxiliary valve core is provided with a circle of O-shaped sealing ring, and when the auxiliary valve core is tightly attached to the bottom wall of the buffer groove, the O-shaped sealing ring is overlapped with the water inlet hole.

Furthermore, flange connection discs are arranged at two ends of the valve body, and L-shaped support legs are fixed at the bottoms of the flange connection discs through bolts.

The utility model has the advantages that: the utility model discloses have the function of opening in advance, when opening the valve, the valve rod can drive the auxiliary valve core earlier and shift up to switch on inlet opening and apopore on the case and carry out the pressure release, then drive the main valve core through the auxiliary valve core again and shift up and open the valve, effectively reduce the valve and open required power, make things convenient for the valve to open, avoid appearing the valve because medium pressure is too big open the difficulty or the card problem of dying.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided.

The present invention will be described in further detail below with reference to the drawings.

Drawings

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

Fig. 2 is an enlarged view of a portion a in fig. 1.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve core; 4. a valve stem; 5. a valve seat; 6. an auxiliary valve core; 7. a compression spring; 8. a flange plate; 9. a connecting rod; 10. a buffer tank; 11. a water inlet hole; 12. a water outlet hole; 13. connecting holes; 14. a first sealing step; 15. a tapered hole; 16. a second sealing step; 17. a conical plug; 18. a hemispherical plug is arranged; 19. an O-shaped sealing ring; 20. a flange connecting plate; 21. an "L" shaped leg; 22. a main spool.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only 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 efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a governing valve with open function in advance.

In this embodiment, referring to fig. 1 and 2, the regulating valve with pre-opening function includes a valve body 1, a valve cover 2, a valve core 3 and a valve rod 4, a valve seat 5 is disposed in a flow passage of the valve body 1, one end of the valve rod can rotate and penetrate through the valve cover to extend into the flow passage to be fixedly connected with the valve core, the valve core 3 and the valve seat 5 can be mutually matched to connect or disconnect the flow passage, the valve core includes a main valve core 22, an auxiliary valve core 6, a compression spring 7, a flange 8 and a connecting rod 9, a buffer groove 10 is disposed on the main valve core 22, a water inlet hole 11 and a water outlet hole 12 are respectively disposed on a side surface and a bottom surface of the buffer groove 10, a connecting hole 13 is disposed at an upper end of the buffer groove, one end of the connecting rod can movably penetrate through the connecting hole to extend into the buffer groove to be connected with the auxiliary valve core, the other end of the, and the flange plate is fixedly connected with the valve rod through a bolt.

Among the above-mentioned technical scheme, through rational in infrastructure case, make the valve have the function of opening in advance, can carry out the pressure release when the valve is opened to reduce the valve and open the degree of difficulty, avoid appearing the valve and open difficulty or the dead problem of card, its principle is: under the action of external force, the valve rod can drive the auxiliary valve core to move upwards firstly, so that a water inlet hole and a water outlet hole on the main valve core are communicated for pressure relief, and the auxiliary valve core is abutted against the upper wall of the buffer groove to drive the main valve core to move upwards, so that the valve is completely opened.

Specifically, a first sealing step 14 is arranged at the upper end of a flow passage hole in the valve seat, a tapered hole 15 is arranged at the lower end of the flow passage hole, and a second sealing step 16 matched with the first sealing step and a tapered plug 17 matched with the tapered hole are arranged on the main valve core. The conical plug and the conical hole are arranged to play a role in guiding, the matching accuracy of the valve element and the valve seat is improved, and the first sealing step and the second sealing step are arranged to improve the sealing performance of the valve element and the valve seat.

Specifically, a hemispherical plug 18 is arranged on the lower end face of the auxiliary valve element, and the hemispherical plug 18 is located right above the water outlet hole 12. The hemispherical plug can plug the water outlet hole, so that the sealing performance is improved, and the leakage is avoided

In order to further improve the sealing performance, a circle of O-shaped sealing ring 19 is arranged on the outer wall of the auxiliary valve core, and when the auxiliary valve core is tightly attached to the bottom wall of the buffer groove, the O-shaped sealing ring is overlapped with the water inlet hole.

Specifically, two ends of the valve body are provided with flange connection discs 20, and the bottom of the flange connection discs 20 is fixed with L-shaped support legs 21 through bolts. The L-shaped supporting legs are convenient for fixing the valve body, and in addition, the L-shaped supporting legs are fixedly connected through bolts and can be detached at any time when not needed.

The utility model discloses have the function of opening in advance, when opening the valve, the valve rod can drive the auxiliary valve core earlier and shift up to switch on inlet opening and apopore on the case and carry out the pressure release, then drive the main valve core through the auxiliary valve core again and shift up and open the valve, effectively reduce the valve and open required power, make things convenient for the valve to open, avoid appearing the valve because medium pressure is too big open the difficulty or the card problem of dying.

The skilled person should understand that: although the present invention has been described in terms of the above embodiments, the inventive concepts are not limited to the embodiments, and any modifications that utilize the inventive concepts are intended to be included within the scope of the appended claims.

Claims

1. The utility model provides a governing valve with function of opening in advance, includes valve body, valve gap, case and valve rod, be equipped with the disk seat in the runner of valve body, but the valve rod one end rotation pass the valve gap stretch into the runner in link firmly with the case, the case can mutually support with the disk seat in order to switch on or break off above-mentioned runner, its characterized in that: the valve core comprises a main valve core, an auxiliary valve core, a compression spring, a flange plate and a connecting rod, wherein a buffer groove is formed in the main valve core, a water inlet hole and a water outlet hole are formed in the side face and the bottom face of the buffer groove respectively, a connecting hole is formed in the upper end of the buffer groove, one end of the connecting rod can movably penetrate through the connecting hole and extend into the buffer groove to be connected with the auxiliary valve core, the other end of the connecting rod is arranged outside the main valve core and is connected with the flange plate, the compression spring is sleeved on the connecting rod between the auxiliary valve core and the upper wall of the buffer.

2. The regulating valve with pre-opening function according to claim 1, wherein: the upper end of a flow passage hole in the valve seat is provided with a first sealing step, the lower end of the flow passage hole is provided with a conical hole, and the main valve core is provided with a second sealing step matched with the first sealing step and a conical plug matched with the conical hole.

3. The regulating valve with pre-opening function according to claim 1 or 2, characterized in that: and a hemispherical plug is arranged on the lower end face of the auxiliary valve element and is positioned right above the water outlet hole.

4. The regulating valve with pre-opening function according to claim 1, wherein: and a circle of O-shaped sealing ring is arranged on the outer wall of the auxiliary valve core, and when the auxiliary valve core is tightly attached to the bottom wall of the buffer groove, the O-shaped sealing ring is superposed with the water inlet hole.

5. The regulating valve with pre-opening function according to claim 1, wherein: the two ends of the valve body are provided with flange connection discs, and the bottoms of the flange connection discs are fixed with L-shaped support legs through bolts.