CN211082970U

CN211082970U - Lifting check valve

Info

Publication number: CN211082970U
Application number: CN201922062510.2U
Authority: CN
Inventors: 王元忠
Original assignee: Yantai Sanhe Steel Casting Co ltd
Current assignee: Yantai Sanhe Steel Casting Co ltd
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-07-24
Anticipated expiration: 2029-11-25

Abstract

The utility model discloses a lift check valve, technical essential: including valve body and valve gap, through bolted connection between valve body and the valve gap, be provided with inlet channel and outlet channel in the valve body, be equipped with the valve clack subassembly that is used for separating the access opening in the valve body, the valve clack subassembly is close to valve gap one side and is connected with the valve rod subassembly, the valve rod subassembly runs through the valve body, the valve rod subassembly includes interior valve rod and outer valve rod, the interior valve rod pole length is greater than the pole length of outer valve rod, the valve rod outside in interior valve rod is located to outer valve rod cover, interior valve rod and outer valve rod threaded connection, the valve clack subassembly includes valve clack and lower valve clack, interior valve rod rotates to be connected in valve clack down, outer valve rod. Thread fit between valve clack subassembly and the valve rod subassembly makes valve clack and lower valve clack separate through rotatory interior valve rod to the opening size of control passage mouth can regard as a check valve, can also regard as a governing valve to use, and the device simple structure, the operation of being convenient for, the function is more.

Description

Lifting check valve

Technical Field

The invention relates to the technical field of valves, in particular to a lifting check valve.

Background

The check valve is a valve which automatically opens and closes a valve flap by the flow of a medium and is used for preventing the medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve. The check valve is an automatic valve and mainly used for preventing medium from flowing backwards, preventing the pump and a driving motor from reversing and discharging container medium. The lifting check valve is a check valve with a valve clack sliding along the vertical center line of the valve body, the lifting check valve can only be installed on a horizontal pipeline, and the valve clack on the high-pressure small-caliber check valve can be a round ball. The valve body of the lift check valve is the same in shape as the stop valve (can be used with the stop valve), so that the coefficient of fluid resistance of the lift check valve is large. The structure of the stop valve is similar to that of the stop valve, and the valve body and the valve clack are the same as the stop valve. The upper part of the valve clack and the lower part of the valve cover are provided with guide sleeves, the guide sleeves can freely lift in the guide sleeves of the valve cover, when a medium flows downstream, the valve clack is opened by the thrust of the medium, and when the medium stops flowing, the valve clack falls on the valve seat by self-hanging, so that the function of preventing the medium from flowing back is realized.

The prior chinese patent publication No. CN202371224U discloses a vertical check valve. Including valve body and valve gap, be provided with the disk seat in the valve body, dispose the valve clack on the disk seat, the valve clack disposes the elasticity resetting means who makes its reseing towards the disk seat, elasticity resetting means includes support, locating lever and spring, the support center has the jack, the support is fixed on the valve body, insert in the jack on the locating lever, the valve clack is fixed in the lower extreme of locating lever, the diameter of valve clack slightly is less than the diameter of valve body inner chamber, the spring cup joints on the locating lever, the both ends of spring push up respectively on support. The spring part sleeved on the positioning rod is adopted to elastically reset the valve clack, wherein the positioning rod enables the valve clack to stably move up and down along the set track, and the spring is sleeved on the positioning rod to realize the elastic resetting function.

The above prior art solutions have the following drawbacks: the above prior art solutions have the following drawbacks: the check valve has the advantages of single function and poor applicability.

Disclosure of Invention

Aiming at the defects in the prior art, one of the purposes of the invention is to provide a lifting check valve, the size of a passage opening can be controlled by the matching of a valve clack assembly and a valve rod assembly, the valve clack assembly and the valve rod assembly are arranged, the lifting check valve can be used as a common valve, the flow can be adjusted, and the lifting check valve is simple in structure, convenient to operate and high in applicability.

The above object of the present invention is achieved by the following technical solutions:

the utility model provides an over-and-under type check valve, includes valve body and valve gap, through bolted connection between valve body and the valve gap, be provided with inlet channel and exit channel in the valve body, be equipped with in the valve body and be used for separating the valve clack subassembly of passway, the valve clack subassembly is close to valve gap one side is connected with valve rod assembly, valve rod assembly runs through the valve body, valve rod assembly includes interior valve rod and outer valve rod, interior valve rod length is greater than the rod length of outer valve rod, outer valve rod cover is located the interior valve rod outside, interior valve rod with outer valve rod threaded connection, valve clack subassembly includes valve clack and lower valve clack, interior valve rod rotate connect in lower valve clack, outer valve rod lateral wall is equipped with cyclic annular boss, cyclic annular boss overlap joint in lateral wall on the valve body.

Through adopting above-mentioned technical scheme, the screw-thread fit between valve clack subassembly and the valve rod subassembly makes valve clack and lower valve clack separate through rotatory interior valve rod to the opening size of control passage mouth not only can regard as a check valve, can regard as a governing valve to use simultaneously, the device simple structure, the operation of being convenient for, the function is more.

The present invention in a preferred example may be further configured to: the binding surfaces of the upper valve clack and the lower valve clack are respectively provided with a sealing gasket and are connected with the sealing gaskets in a gluing way.

Through adopting above-mentioned technical scheme, the sealed pad that sets up can be more effectual seals valve clack and lower valve clack.

The present invention in a preferred example may be further configured to: the sealing gasket is respectively embedded in the upper valve clack and the lower valve clack and is fastened through a metal wire.

Through adopting above-mentioned technical scheme, inlay and establish can effectual reduction rivers to the impact of binding face, and fix through the wire and can effectual improvement fastening effect, and the wire cost is lower.

The present invention in a preferred example may be further configured to: the lower valve clack is embedded in the bottom wall in the valve body, the lower valve clack is provided with a plurality of spring pins, and the valve body is correspondingly provided with a first groove connected with the spring pins in a clamping manner.

Through adopting above-mentioned technical scheme, the spring catch that sets up can fix the valve clack down in the valve body the drunkenness of valve clack, and uses the spring catch also can dismantle, and convenient the change can be changed after using for a long time, and it is long when having improved the use of device.

The present invention in a preferred example may be further configured to: and sealing gaskets are arranged on the binding surfaces of the outer valve rod, the valve body and the valve cover.

Through adopting above-mentioned technical scheme, the leakproofness of equipment has effectively been improved to the sealed pad that sets up.

The present invention in a preferred example may be further configured to: the upper valve clack is provided with a plurality of bulges, and the lower valve clack is provided with a second groove matched with the bulges.

Through adopting above-mentioned technical scheme, the relative movement between the two can further be injectd to the arch that sets up and second recess, has improved the leakproofness.

The present invention in a preferred example may be further configured to: the valve cover upper surface is equipped with the lug, the lug with valve cover an organic whole sets up.

Through adopting above-mentioned technical scheme, the lug that sets up can conveniently snatch at the in-process that the device removed, and does not influence overall structure.

The present invention in a preferred example may be further configured to: and the valve body, the valve rod and the valve cover are subjected to anti-corrosion treatment.

Through adopting above-mentioned technical scheme, anticorrosive treatment has effectually improved the live time of device.

In summary, the invention includes at least one of the following beneficial technical effects:

1. by adopting the technical scheme, the valve clack assembly is in threaded fit with the valve rod assembly, and the upper valve clack is separated from the lower valve clack by rotating the inner valve rod, so that the opening size of the passage opening is controlled, the valve clack can be used as a check valve and a regulating valve at the same time, and the device is simple in structure, convenient to operate and multifunctional;

2. through adopting above-mentioned technical scheme, the spring catch that sets up can fix the valve clack down in the valve body the drunkenness of valve clack, and uses the spring catch also can dismantle, and convenient the change can be changed after using for a long time, and it is long when having improved the use of device.

Drawings

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

In the figure, 1, a valve body; 2. a valve cover; 3. a bolt; 4. an inlet channel; 5. an outlet channel; 6. a valve flap assembly; 61. an upper valve flap; 62. a lower valve clack; 7. a valve stem assembly; 71. an inner valve stem; 72. an outer valve stem; 8. an annular boss; 9. a gasket; 10. a spring pin; 11. a first groove; 12. a protrusion; 13. a second groove; 14. lifting lugs; 15. a passage port.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1, the present invention discloses a lift check valve. Including valve body 1 and valve gap 2, connect through bolt 3 between valve body 1 and the valve gap 2, be provided with inlet channel 4 and outlet channel 5 in the valve body 1, be equipped with the valve clack subassembly 6 that is used for separating passage mouth 15 in the valve body 1, valve clack subassembly 6 is close to valve gap 2 one side and is connected with valve rod assembly 7, valve rod assembly 7 runs through valve body 1, valve rod assembly 7 includes interior valve rod 71 and outer valve rod 72, interior valve rod 71 rod length is greater than the rod length of outer valve rod 72, the interior valve rod 71 outside is located to outer valve rod 72 cover, interior valve rod 71 and outer valve rod 72 threaded connection, valve clack subassembly 6 includes valve clack 61 and lower valve clack 62, interior valve rod 71 rotates to be connected in lower valve clack 62, outer valve rod 72 lateral wall is equipped with cyclic annular boss 8, cyclic annular boss. The threaded fit (threads are not shown) between the valve clack assembly 6 and the valve rod assembly 7 separates the upper valve clack 61 from the lower valve clack 62 by rotating the inner valve rod 71, so that the opening size of the control channel port 15 can be used as a check valve and a regulating valve, and the device is simple in structure, convenient to operate and multifunctional.

As shown in fig. 1, the joint surfaces of the upper valve flap 61 and the lower valve flap 62 are respectively provided with a gasket 9, and are connected with the gasket 9 by gluing. The sealing gasket 9 is arranged to more effectively seal the upper flap 61 and the lower flap 62. The sealing gasket 9 is respectively embedded in the upper valve clack 61 and the lower valve clack 62 and is fastened through metal wires, and the metal wires are copper wires. Inlay and establish can effectual reduction rivers to the impact of binding face, and fix through the wire and can effectual improvement fastening effect, and the wire cost is lower. Lower valve clack 62 inlays and locates diapire in valve body 1, and valve clack 62 is equipped with a plurality of spring pins 10 down, and the correspondence is equipped with first recess 11 on the valve body 1 and is connected with spring pin 10 joint. The spring pin 10 that sets up can fix lower valve clack 62 in valve body 1 bottom wall and reduce the drunkenness of lower valve clack 62, and uses spring pin 10 also can dismantle, and convenient the change can be changed after using for a long time, has improved the length of time of use of device. The upper flap 61 is provided with a plurality of protrusions 12 and the lower flap 62 is provided with second recesses 13 which cooperate with the protrusions 12. The protrusion 12 and the second groove 13 are arranged to further limit relative movement therebetween, and sealing performance is improved.

As shown in fig. 1, the gasket 9 is provided on the surface of the outer stem 72 that contacts the valve body 1 and the bonnet 2. The sealing gasket 9 is arranged, so that the tightness of the equipment is effectively improved. Further, the upper surface of the valve cover 2 is provided with a lifting lug 14, and the lifting lug 14 and the valve cover 2 are integrally arranged. The lifting lug 14 can be conveniently grabbed in the moving process of the device, and the integral structure is not influenced. The valve body 1, the valve rod assembly 7 and the valve cover 2 are all subjected to anti-corrosion treatment. The anti-corrosion treatment effectively improves the service time of the device.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The lifting check valve comprises a valve body (1) and a valve cover (2), wherein the valve body (1) and the valve cover (2) are connected through a bolt (3), an inlet passage (4) and an outlet passage (5) are arranged in the valve body (1), and the lifting check valve is characterized in that a valve clack assembly (6) used for separating a passage opening (15) is arranged in the valve body (1), the valve clack assembly (6) is close to one side of the valve cover (2) and is connected with a valve rod assembly (7), the valve rod assembly (7) penetrates through the valve body (1), the valve rod assembly (7) comprises an inner valve rod (71) and an outer valve rod (72), the rod length of the inner valve rod (71) is larger than that of the outer valve rod (72), the outer valve rod (72) is sleeved outside the inner valve rod (71), the inner valve rod (71) is in threaded connection with the outer valve rod (72), the valve clack assembly (6) comprises an upper valve clack (61) and a, interior valve rod (71) rotate connect in valve clack (62) down, outer valve rod (72) lateral wall is equipped with cyclic annular boss (8), cyclic annular boss (8) overlap joint in lateral wall on valve body (1).

2. The lift check valve according to claim 1, characterized in that the contact surfaces of the upper flap (61) and the lower flap (62) are each provided with a sealing gasket (9) and are connected to the sealing gaskets (9) by gluing.

3. The non-return, lifting valve according to claim 2, characterized in that the sealing gasket (9) is embedded in the upper flap (61) and the lower flap (62), respectively, and is fastened by means of wires.

4. The lift check valve according to claim 1, wherein the lower flap (62) is embedded in the inner bottom wall of the valve body (1), the lower flap (62) is provided with a plurality of spring pins (10), and the valve body (1) is correspondingly provided with a first groove (11) connected with the spring pins (10) in a clamping manner.

5. The lift check valve of claim 1, wherein the outer stem (72) has a gasket (9) against the valve body (1) and the bonnet (2).

6. A non-return, lifting valve according to claim 1, characterized in that the upper flap (61) is provided with protrusions (12) and the lower flap (62) is provided with second recesses (13) cooperating with the protrusions (12).

7. The lift check valve according to claim 1, wherein the valve cap (2) is provided with a lifting lug (14) on an upper surface thereof, and the lifting lug (14) is integrally provided with the valve cap (2).

8. The lift check valve of claim 1, wherein the valve body (1), the valve stem, and the valve cap (2) are all treated to prevent corrosion.