CN212297094U

CN212297094U - Threaded plug-in type overflow valve

Info

Publication number: CN212297094U
Application number: CN202020972861.7U
Authority: CN
Inventors: 周庆山
Original assignee: NINGBO HANSHANG HYDRAULIC CO LTD
Current assignee: NINGBO HANSHANG HYDRAULIC CO LTD
Priority date: 2020-06-01
Filing date: 2020-06-01
Publication date: 2021-01-05
Anticipated expiration: 2030-06-01

Abstract

The utility model relates to the technical field of overflow valves, in particular to a thread cartridge overflow valve, which comprises a valve body, and when in use, the length of a thread cylinder and a threaded rod outside is adjusted through a first adjusting nut and a second adjusting nut, the positions of a first valve core and a second valve core are further convenient to adjust, and the pressure of a first spring and a second spring on the first valve core and the second valve core is further convenient to adjust through the first adjusting nut and the second adjusting nut, so as to adjust the passing accuracy of liquid, the use is convenient, the first valve core and the second valve core are further convenient to adjust through the pressure of the first spring and the second spring on the first valve core and the second valve core, and further the flow of the liquid is convenient to adjust, the utility model can switch large flow and small flow, convenient to use, convenient operation.

Description

Threaded plug-in type overflow valve

Technical Field

The utility model relates to an overflow valve technical field, in particular to screw thread cartridge formula overflow valve.

Background

The plug-in type overflow valve is commonly used in a hydraulic system and used for limiting the pressure of the system, most of overflow valve spools on the market adopt the type of one-way valve cone spools, the structure is simple, and due to the fact that the structure is single, when the overflow valve is used, the adjustment of large flow and small flow cannot be carried out, the applicability of the overflow valve is further reduced, the overflow valve is not convenient to use, and the overflow valve is installed and used, and the problem of low adjustment precision exists, and is not convenient to use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a screw thread cartridge formula overflow valve to the unable big flow and the low discharge of satisfying who proposes in solving above-mentioned background art use, and have the inconvenient problem of precision control.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a screw thread cartridge formula overflow valve, includes the valve body, the inside vertical inlet of having seted up of valve body, the joint is inlayed to the lower extreme of valve body has sealed the pad, the upper end threaded connection of valve body has the valve gap, the liquid outlet has evenly been seted up in the lower extreme outside of valve body, the inside grafting of valve body has first sealing member, the upper end threaded connection of first sealing member has first adjusting nut, the inside grafting of first sealing member has the second sealing member, the upper end threaded connection of second sealing member has second adjusting nut, just the upper end of second sealing member runs through first sealing member, and extend to the outside of first sealing member, the lower surface of second adjusting nut with the upper surface of first sealing member contacts.

Preferably, the first sealing element comprises a first valve core, a first spring seat, a first spring, a first adjusting plate and a threaded cylinder, the first sealing element is inserted into the liquid inlet, a shunting hole is vertically formed in the first valve core, communication holes are uniformly formed in the outer side of the first valve core, the first spring seat is fixedly connected with the first valve core, the first spring is fixedly installed on the upper surface of the first spring seat, the upper end of the first spring is fixedly connected with the lower surface of the first adjusting plate, the upper surface of the first adjusting plate is fixedly connected with the threaded cylinder, the threaded cylinder penetrates through the valve cover and extends to the outer portion of the valve cover, and the first adjusting nut is in threaded connection with the threaded cylinder.

Preferably, the liquid inlet, the flow dividing holes, the communicating holes and the liquid outlet are communicated.

Preferably, the second sealing element comprises a second valve core, a connecting rod, a second spring seat, a second spring, a second adjusting plate and a threaded rod, and the second valve core is inserted into the diversion hole of the first valve core.

Preferably, the upper end of the second valve core is fixedly connected with the connecting rod, the connecting rod penetrates through the first spring and extends to the upper end of the first adjusting plate and the second spring seat, the second spring is fixedly installed at the upper end of the second spring seat, the second adjusting plate is fixedly installed at the upper end of the second spring, the middle position of the upper end of the second adjusting plate is fixedly connected with the threaded rod, the threaded rod penetrates through the threaded barrel and extends to the outer portion of the threaded barrel and the second adjusting nut are in threaded connection.

Preferably, the second spring seat, the second spring and the second adjusting plate are all located inside the threaded cylinder.

Preferably, the elastic force of the second spring is smaller than the elastic force of the first spring.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be equipped with first sealing member and second sealing member, and then when using, through first adjusting nut and second adjusting nut, adjust the length that a thread section of thick bamboo and threaded rod are located the outside, and then be convenient for adjust the position of first case and second case, and through first adjusting nut and second adjusting nut, be convenient for receive the pressure of first spring and second spring to first case and second case and adjust, and then the accuracy that the conditioning liquid passes through, convenient to use.

2. The utility model discloses a first adjusting nut and second adjusting nut, and then be convenient for receive the pressure of first spring and second spring to first case and second case and adjust, and then be convenient for adjust the flow that liquid passes through, it is convenient the utility model discloses carry out the switching of large-traffic and low discharge, convenient to use, convenient operation.

Drawings

Fig. 1 is a front sectional view of the structure of the present invention.

Fig. 2 is a front view of the structure of the present invention.

Fig. 3 is a three-dimensional cross-sectional view of the valve body in the structure of the present invention.

Fig. 4 is a schematic structural view of a second sealing member in the structure of the present invention.

In the figure: 1. a valve body; 2. a liquid inlet; 3. a gasket; 4. a valve cover; 5. a liquid outlet; 6. a first seal member; 7. a first adjusting nut; 8. a second seal member; 9. a second adjusting nut; 10. a first valve spool; 11. a first spring seat; 12. a first spring; 13. a first adjusting plate; 14. a threaded barrel; 15. a shunt hole; 16. a communicating hole; 17. a second valve core; 18. a connecting rod; 19. a second spring seat; 20. a second spring; 21. a second adjusting plate; 22. a threaded rod.

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 work belong to the protection scope of the present invention.

The utility model provides a screw thread cartridge formula overflow valve as shown in fig. 1-4, including valve body 1, inlet 2 has vertically been seted up in the inside of valve body 1, the joint is inlayed to the lower extreme of valve body 1 has sealed the pad 3, the upper end threaded connection of valve body 1 has valve gap 4, liquid outlet 5 has evenly been seted up in the lower extreme outside of valve body 1, the inside grafting of valve body 1 has first sealing member 6, the upper end threaded connection of first sealing member 6 has first adjusting nut 7, the inside grafting of first sealing member 6 has second sealing member 8, the upper end threaded connection of second sealing member 8 has second adjusting nut 9, and first sealing member 6 is run through to the upper end of second sealing member 8, and extend to the outside of first sealing member 6, the lower surface of second adjusting nut 9 contacts with the upper surface of first sealing member 6.

Preferably, the first sealing member 6 includes a first valve core 10, a first spring seat 11, a first spring 12, a first adjusting plate 13 and a thread cylinder 14, and the first sealing member 6 is inserted in the liquid inlet 2, a diversion hole 15 is vertically formed in the first valve core 10, a communication hole 16 is uniformly formed in the outer side of the first valve core 10, the liquid inlet 2, the diversion hole 15, the communication hole 16 and the liquid outlet 5 are communicated, the first spring seat 11 is fixedly connected with the first valve core 10, the first spring 12 is fixedly mounted on the upper surface of the first spring seat 11, the upper end of the first spring 12 is fixedly connected with the lower surface of the first adjusting plate 13, the upper surface of the first adjusting plate 13 is fixedly connected with the thread cylinder 14, the thread cylinder 14 penetrates through the valve cover 4 and extends to the outside of the valve cover 4, and the first adjusting nut 7 is in threaded connection with the thread cylinder 14.

The second sealing member 8 comprises a second valve spool 17, a connecting rod 18, a second spring seat 19, a second spring 20, a second adjusting plate 21 and a threaded rod 22, and the second valve core 17 is inserted into the diversion hole 15 of the first valve core 10, the upper end of the second valve core 17 is fixedly connected with the connecting rod 18, the connecting rod 18 penetrates through the first spring 12, and extends to the upper end of the first adjusting plate 13 to be fixedly connected with the second spring seat 19, the second spring 20 is fixedly arranged at the upper end of the second spring seat 19, the second adjusting plate 21 is fixedly arranged at the upper end of the second spring 20, the middle position of the upper end of the second adjusting plate 21 is fixedly connected with the threaded rod 22, the threaded rod 22 penetrates through the threaded barrel 14, and extend to the outside of the threaded cylinder 14 to be in threaded connection with the second adjusting nut 9, and the second spring seat 19, the second spring 20 and the second adjusting plate 21 are all positioned inside the threaded cylinder 14, and the elastic force of the second spring 20 is smaller than that of the first spring 12.

When the present invention is used at a low flow rate, the first adjusting nut 7 is screwed, as shown in fig. 1 and 4. The screw cylinder 14 is moved downward inside the liquid inlet 2, the first valve core 10 is moved downward, the communication hole 16 is aligned with the liquid outlet 5, and by adjusting the second adjusting nut 9, the second spool 17 is lowered to the appropriate position, when external liquid enters the interior of the liquid inlet 2, and the liquid is caused to enter the interior of the flow dividing holes 15, and the liquid pushes the first spool 10 and the second spool 17 due to the pressure of the liquid, and the elastic force of the second spring 20 is smaller than that of the first spring 12, thereby causing the liquid to push the second spool 17 upward within the dispensing orifice 15, causing the second spring 20 to compress, and make liquid enter into the inside of intercommunicating pore 16 through reposition of redundant personnel hole 15, and enter into the inside of liquid outlet 5 through intercommunicating pore 16, and then be convenient for the liquid of miniflow to discharge through liquid outlet 5, realize opening of miniflow.

This practical theory of operation: when using the utility model discloses the time, will the utility model discloses peg graft in the position that needs use, and be equipped with sealed pad 3 for the cartridge leakproofness improves, and adjusts first adjusting nut 7 and second adjusting nut 9, and then adjusts the utility model discloses when receiving suitable pressure, make liquid process the utility model discloses, when being located different positions on screw thread section of thick bamboo 14 and threaded rod 22 through adjusting first adjusting nut 7 and second adjusting nut 9, be convenient for adjust different flow and use, when the low discharge uses, twist and move first adjusting nut 7. The screw cylinder 14 is moved downward inside the liquid inlet 2, the first valve core 10 is moved downward, the communication hole 16 is aligned with the liquid outlet 5, and by adjusting the second adjusting nut 9, the second spool 17 is lowered to the appropriate position, when external liquid enters the interior of the liquid inlet 2, and the liquid is caused to enter the interior of the flow dividing holes 15, and the liquid pushes the first spool 10 and the second spool 17 due to the pressure of the liquid, and the elastic force of the second spring 20 is smaller than that of the first spring 12, thereby causing the liquid to push the second spool 17 upward within the dispensing orifice 15, causing the second spring 20 to compress, and make liquid enter into the inside of intercommunicating pore 16 through reposition of redundant personnel hole 15, and enter into the inside of liquid outlet 5 through intercommunicating pore 16, and then be convenient for the liquid of miniflow to discharge through liquid outlet 5, realize opening of miniflow.

When large-traffic use, adjust first adjusting nut 7 and second adjusting nut 9, and when liquid entered into the inside of inlet 2 for liquid promotes first case 10 and upwards removes, makes first spring 12 compress, and makes inlet 2 and liquid outlet 5 be linked together, and the large-traffic liquid of being convenient for passes through the utility model discloses.

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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a screw thread cartridge overflow valve, includes valve body (1), its characterized in that: a liquid inlet (2) is vertically arranged in the valve body (1), a sealing gasket (3) is embedded and clamped at the lower end of the valve body (1), the upper end of the valve body (1) is in threaded connection with a valve cover (4), the outer side of the lower end of the valve body (1) is uniformly provided with liquid outlets (5), a first sealing element (6) is inserted into the valve body (1), the upper end of the first sealing element (6) is connected with a first adjusting nut (7) in a threaded manner, a second sealing element (8) is inserted into the first sealing element (6), the upper end of the second sealing element (8) is connected with a second adjusting nut (9) in a threaded manner, and the upper end of the second sealing member (8) penetrates through the first sealing member (6), and extends to the outside of the first seal (6), the lower surface of the second adjusting nut (9) being in contact with the upper surface of the first seal (6).

2. The threaded cartridge type overflow valve of claim 1, characterized in that: the first sealing element (6) comprises a first valve core (10), a first spring seat (11), a first spring (12), a first adjusting plate (13) and a threaded cylinder (14), the first sealing element (6) is inserted into the liquid inlet (2), a shunting hole (15) is vertically formed in the first valve core (10), communication holes (16) are uniformly formed in the outer side of the first valve core (10), the first spring seat (11) is fixedly connected with the first valve core (10), the first spring (12) is fixedly installed on the upper surface of the first spring seat (11), the upper end of the first spring (12) is fixedly connected with the lower surface of the first adjusting plate (13), the upper surface of the first adjusting plate (13) is fixedly connected with the threaded cylinder (14), and the threaded cylinder (14) penetrates through the valve cover (4), and the first adjusting nut (7) is in threaded connection with the threaded cylinder (14).

3. The threaded cartridge type overflow valve according to claim 2, characterized in that: the liquid inlet (2), the shunting hole (15), the communicating hole (16) and the liquid outlet (5) are communicated.

4. The threaded cartridge type overflow valve according to claim 2, characterized in that: the second sealing element (8) comprises a second valve core (17), a connecting rod (18), a second spring seat (19), a second spring (20), a second adjusting plate (21) and a threaded rod (22), and the second valve core (17) is inserted into the diversion hole (15) of the first valve core (10).

5. The threaded cartridge type overflow valve of claim 4, characterized in that: the upper end of the second valve core (17) is fixedly connected with the connecting rod (18), the connecting rod (18) penetrates through the first spring (12) and extends to the upper end of the first adjusting plate (13) to be fixedly connected with the second spring seat (19), the second spring (20) is fixedly installed at the upper end of the second spring seat (19), the second adjusting plate (21) is fixedly installed at the upper end of the second spring (20), the middle position of the upper end of the second adjusting plate (21) is fixedly connected with the threaded rod (22), and the threaded rod (22) penetrates through the threaded cylinder (14) and extends to the outer portion of the threaded cylinder (14) to be in threaded connection with the second adjusting nut (9).

6. The threaded cartridge type overflow valve of claim 4, characterized in that: the second spring seat (19), the second spring (20) and the second adjusting plate (21) are all located inside the threaded barrel (14).

7. The threaded cartridge type overflow valve of claim 4, characterized in that: the elastic force of the second spring (20) is smaller than the elastic force of the first spring (12).