CN215522036U

CN215522036U - Nut type floating ball structure

Info

Publication number: CN215522036U
Application number: CN202120356181.7U
Authority: CN
Inventors: 时永宾; 杨新伟; 沈社营
Original assignee: Henan Fujia Fluid Control Technology Co Ltd
Current assignee: Henan Fujia Fluid Control Technology Co Ltd
Priority date: 2021-02-06
Filing date: 2021-02-06
Publication date: 2022-01-14
Anticipated expiration: 2031-02-06

Abstract

The utility model relates to a nut type floating ball structure which comprises a valve cover, wherein one end of the valve cover is detachably connected with a valve body, a fireproof sealing device is arranged at the connecting part of the valve body and the valve cover, so that the valve body cannot leak in a high-temperature state, a nut is connected to the upper end of the valve body in a threaded manner, a first pressing ring is vertically and slidably connected to the upper end of the valve body, a valve rod is connected with the first pressing ring through a disc spring, an automatic sealing device is arranged between the inner side wall of the valve body and the nut, so that the valve rod and the inner side wall of the valve body are always in a fit state, the upper end of the thread is vertically and rotatably connected with the valve rod, a ball body fixedly connected with the valve rod is rotatably matched between the valve cover and the valve body, and one end of the valve rod is fixedly connected with a handle.

Description

Nut type floating ball structure

Technical Field

The utility model relates to the technical field of spheres, in particular to a nut type floating ball structure.

Background

The ball is mainly used for cutting off, distributing and changing the flow direction of a medium in a pipeline, can be closed tightly only by rotating ninety degrees and a small rotating moment, is most suitable for being used as a switch and a cut-off valve, is a V-shaped ball, and an electric valve needs to pay special attention to the use environment condition besides the pipeline parameters, so that the prior art still has the technical problems that:

firstly, in particular to the delivery of a chemical medicine bottle, a common sphere is used for closing chemical liquid to flow, sometimes high temperature is generated to corrode a sealing ring, and the chemical liquid flows out of the sphere to cause accidents and even harm to people;

and secondly, when the ball is controlled to be closed, the fluid is closed by selecting a rotating ball mode generally, but friction force is necessarily generated by rotating force, abrasion is generated by the friction force, namely, the sealing performance is damaged, the ball cannot be completely sealed, and the safety is unreliable.

SUMMERY OF THE UTILITY MODEL

Aiming at the situation, in order to overcome the defects of the prior art, the utility model provides the nut type floating ball structure which is particularly applied to conveying of chemical medicines, a common ball body is applied to closed chemical liquid flowing, high temperature can be generated sometimes to corrode a sealing ring, the chemical liquid flows out of the ball body, accidents are caused, and even people are injured; when the ball is controlled to be closed, the fluid is generally closed by selecting a rotating ball mode, but the rotating force necessarily has friction force, the friction force can cause abrasion, the abrasion can cause sealing damage, the ball cannot be completely sealed, and the safety is not reliable.

The scheme adopted by the utility model is as follows: nut formula floating ball structure, including the valve gap, its characterized in that, valve gap one end can dismantle and be connected with the valve body, valve body and valve gap coupling part are provided with fire prevention sealing device for the valve body can not reveal under high temperature state, valve body upper end threaded connection have the nut, the vertical sliding connection in valve body upper end have first clamping ring, valve rod and first clamping ring between be connected through the dish spring, valve body inside wall and nut between be provided with automatic sealing device for laminating state all the time between valve rod and the valve body inside wall, the vertical rotation in screw thread upper end be connected with the valve rod, normal running fit has the spheroid with valve rod fixed connection between valve gap and the valve body, valve rod one end fixedly connected with handle.

Preferably, the fireproof sealing device comprises a graphite sealing gasket sleeved at one end of the valve cover, and a PTFE sealing gasket fixedly connected with the graphite sealing gasket and sleeved with the valve cover.

Preferably, the automatic sealing device comprises an upper filler, a middle filler and a lower filler which are arranged between the pressure ring and the valve body, wherein the upper filler, the middle filler and the lower filler are in a V shape with a downward opening.

Preferably, the upper filler, the middle filler and the lower filler are made of PTFE.

Preferably, the vertical sliding connection of nut inside wall have the second clamping ring, second clamping ring and nut inside wall between be provided with graphite, nut and valve body between be provided with graphite.

The utility model has the beneficial effects that:

one, utilize automatic sealing device, "V" to go up filler, interior filler, lower filler can carry out automatic compensation with the wearing and tearing that produce between control valve rod and the valve body for be in the state of closely laminating all the time between valve body and the valve rod, guaranteed the leakproofness of valve body, also guaranteed people's safety simultaneously.

Second, utilize fire prevention sealing device, when the liquid that flows in the valve body produced high temperature, burn out PTFE sealed pad, but the sealed leakproofness that can continue to guarantee spheroid of rear end graphite packing, because the sealed leakproofness of PTFE sealed pad is better than the leakproofness of graphite packing, so seal up the setting of PTFE sealed pad before graphite packing.

Drawings

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

Fig. 2 is a partially enlarged view a of fig. 1.

Fig. 3 is a partially enlarged view B of fig. 1.

Reference numerals: 1. a valve cover; 2. a valve body; 3. a nut; 4. a first pressure ring; 5. a disc spring; 6. a valve stem; 7. a sphere; 8. a handle; 9. a graphite gasket; 10. a PTFE gasket; 11. filling; 12. a middle filler; 13. lower filling; 14. a second pressure ring; 15. graphite.

Detailed Description

The foregoing and other aspects, features and advantages of the utility model will be apparent from the following more particular description of the embodiments of the utility model, as illustrated in the accompanying drawings in which reference is made to figures 1-3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The first embodiment provides a nut-type floating ball structure, which comprises a valve cover 1, and is characterized in that, one end of the valve cover 1 is detachably connected with the valve body 2, and the connecting part of the valve body 2 and the valve cover 1 is provided with a fireproof sealing device, so that the valve body 2 cannot leak in a high-temperature state, the upper end of the valve body 2 is connected with a nut 3 through a thread, the upper end of the valve body 2 is vertically connected with a first press ring 4 in a sliding way, the lower end of the nut 3 is connected with the first pressure ring 4 through a disc spring 5, an automatic sealing device is arranged between the inner side wall of the valve body 2 and the nut 3, so that the valve rod 6 and the inner side wall of the valve body 2 are always in a fit state, the upper end of the thread is vertically and rotatably connected with a valve rod 6, an opening and closing part sphere (7) is arranged between the valve cover 1 and the valve body 2, and the valve rod (6) is installed in a matched manner through a flat groove structure, and one end of the valve rod (6) is fixedly connected with a handle (8).

When the valve is used, the valve body 2 is communicated with the valve cover 1 when the opening and closing part ball 7 needs to be opened, liquid can circulate, and the valve body can rotate through the handle 8, the upper end of the valve rod 6 is fixedly connected with the handle 8, so the handle 8 can be rotated and the valve rod 8 can be driven to rotate, the nut 3 is in threaded connection with the upper end of the valve body 2, meanwhile, the lower end of the valve body is connected with the opening and closing part ball 7, so the valve rod 8 moves to drive the opening and closing part ball 7 to rotate, the valve body 2 and the valve cover 1 can be communicated by rotating to one end of the opening and closing part ball 7, an automatic sealing device is arranged between the inner side wall of the valve body 2 and the nut 3, the valve rod 6 is abraded in the rotating process, the automatic sealing device can automatically compensate, the valve body is always attached to the valve rod 6, the sealing performance is ensured, and a fireproof sealing device is arranged at the connecting part of the valve body 2 and the valve cover 1, the high temperature of the fluid is guaranteed, the valve body 2 and the valve cover cannot be leaked, the safety of the device is guaranteed, if the device is closed, the handle 8 rotates in the reverse direction, the opening and closing part ball body 7 rotates, the other end of the opening and closing part ball body 7 is not communicated with the valve cover 1, the flow direction of the fluid is blocked, and the effect of closing the valve is achieved.

In the second embodiment, on the basis of the first embodiment, the fireproof sealing device comprises a graphite sealing gasket 9 sleeved at one end of the valve cover 1, and a PTFE sealing gasket 10 fixedly connected with one end of the graphite sealing gasket 9 and sleeved with the valve cover 1.

This embodiment is when using, when high temperature fluid passes through valve body 2, valve gap 1, produces high temperature and can melt sealed the pad 10 of PTFE, and sealed pad 10 outer end of PTFE is connected with the cover and establishes the sealed 9 start-up sealing effects of graphite of 1 one end of valve gap, because the sealed 9 high temperature of graphite, and the sealed leakproofness of pad 10 of PTFE is good, combines both to play fine leakproofness, has also played double seal's effect, better assurance people's safety.

Third embodiment, on the basis of first embodiment, the automatic sealing device include last filler 11, well filler 12, the lower filler 13 that set up between clamping ring and the valve body 2, last filler 11, well filler 12, lower filler 13 be "V" form that the opening is down.

This embodiment is when using, my rotation between valve rod 6 and the valve body 2 produces wearing and tearing, because last filler 11, interior filler 12, filler 13 packing shape is opening "V" form down, the certain plasticity that has of packing, the wearing and tearing value of compensation valve rod 6 that can be automatic, if, filler 13 lower extreme has worn and torn down, because last filler 11 upper end contacts with first clamping ring 4 of sliding connection on the 2 inside walls of valve body, and be connected through dish spring 5 between nut 3 and the first clamping ring, so when filler 13 lower extreme wearing and tearing down, first clamping ring 4 can be automatic down-pressing, guarantee that

filler

13 and 2 inside walls of valve body laminate all the time down, the leakproofness in the valve body 2 has been guaranteed.

In the fourth embodiment, on the basis of the third embodiment, the material of the upper filler 11, the middle filler 12 and the lower filler 13 is PTFE.

When the embodiment is used, the PTFE material has certain plasticity and good sealing property, and the sealing property can be better ensured.

Fifth embodiment, on the basis of first embodiment, 3 inside wall vertical sliding connection of nut have second clamping ring 14,

second clamping ring

14 and 3 inside walls of nut between be provided with graphite 15, nut 3 and valve body 2 between be connected be provided with graphite 15.

When the pressure-compensating valve is used, the second pressing ring 14 is connected to the lower end of the nut 3 in a sliding mode, the first pressing ring 4 is connected with the lower end of the nut 3 through the disc spring 5, a part of the disc spring 5 is connected with the second pressing ring 14, and when graphite 15 between the inner side walls of the nut 3 of the second pressing ring 14 is abraded by the valve rod 6, the second pressing ring 14 can ascend under the action of the disc spring 5 and also has an automatic compensation effect (note: the graphite 15 cannot be abraded too severely, and the elastic force of the disc spring 5 cannot enable the second pressing ring 14 to ascend to a required position).

The above description is only for the purpose of illustrating the present invention, and it should be understood that the present invention is not limited to the above embodiments, and various modifications conforming to the spirit of the present invention are within the scope of the present invention.

Claims

1. The nut type floating ball structure comprises a valve cover (1) and is characterized in that one end of the valve cover (1) is detachably connected with a valve body (2), a fireproof sealing device is arranged at the connecting part of the valve body (2) and the valve cover (1) to prevent the valve body (2) from leaking in a high-temperature state, a nut (3) is in threaded connection with the upper end of the valve body (2), a first pressing ring (4) is vertically and slidably connected with the upper end of the valve body (2), the lower end of the nut (3) is connected with the first pressing ring (4) through a disc spring (5), an automatic sealing device is arranged between the inner side wall of the valve body (2) and the nut (3) to enable the valve rod (6) and the inner side wall of the valve body (2) to be in a state of being always attached to each other, a valve rod (6) is vertically and rotatably connected with the upper end of a thread, and an opening and closing part ball body (7) is arranged between the valve cover (1) and the valve body (2), and the valve rod (6) is installed in a matched manner through a flat groove structure, and one end of the valve rod (6) is fixedly connected with a handle (8).

2. A nut-type floating ball structure as claimed in claim 1, wherein said fire-proof sealing means comprises a graphite gasket (9) disposed at one end of said valve cover (1), and a PTFE gasket (10) disposed around said valve cover (1) and fixedly connected to one end of said graphite gasket (9).

3. A nut-type floating ball structure as claimed in claim 1, wherein said automatic sealing means comprises an upper packing (11), a middle packing (12) and a lower packing (13) arranged between said pressing ring and said valve body (2), said upper packing (11), said middle packing (12) and said lower packing (13) being "V" shaped with its opening facing downward.

4. A nut-type floating ball structure as defined in claim 3, characterized in that the upper filler (11), the middle filler (12) and the lower filler (13) are made of PTFE.

5. A nut-type floating ball structure as claimed in claim 1, characterized in that a second press ring (14) is vertically slidably connected to the inner side wall of the nut (3), graphite (15) is arranged between the second press ring (14) and the inner side wall of the nut (3), and graphite (15) is arranged between the nut (3) and the valve body (2).