Double union straight-through ball valve

Abstract

The utility model relates to the technical field of ball valves, in particular to a double union straight-through ball valve which comprises a valve seat, a valve ball is installed in the valve seat in a sealed mode, a valve rod is connected to the valve ball, the valve rod extends out of the valve seat and is provided with a pressing block, and a valve rod sealing ring is arranged between the pressing block and the valve seat; through cooperation of the valve plug limiting face and the valve seat limiting face, the limiting effect is conveniently achieved when the valve plug and the valve seat are connected, the torque is stable when the valve ball rotates under the condition that the sealing of the valve ball is guaranteed, the situation that the torque of the valve ball is increased due to too much screwing of the valve plug or the situation that the valve ball leaks water due to too little screwing of the valve plug can be prevented, and the practicability is improved; the union limiting seam allowance, the valve seat limiting seam allowance and the valve plug limiting seam allowance are matched, so that when the union is assembled, it is guaranteed that the axis of the union, the axis of the valve seat and the axis of the valve plug are basically coaxial, large dislocation can be prevented, the dislocation probability is reduced, and the assembling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball valve technical field, concretely is a kind of double by straight-through ball valve. BACKGROUND

[0002] Ball valve is a kind of valve driven by valve stem, and rotates around ball valve axis, can be used for the adjustment and control of fluid, especially suitable for medium containing fiber, micro solid particles etc..Ball valve itself has the advantages of simple structure, reliable sealing, and wide application range, but there are still some deficiencies in many ball valves used at present, such as between valve plug and valve seat, it is inconvenient to prevent valve plug from rotating too much, leading to the increase of valve ball torque or the situation that valve plug rotates too little leading to valve ball leakage, and between by and valve seat, it is inconvenient to make by and valve seat coaxial during on-site assembly, and it is easy to produce large misalignment, for this purpose, we propose a double by straight-through ball valve. SUMMARY

[0003] (I) technical problem solved

[0004] In view of the deficiencies of the prior art, the utility model provides a double by straight-through ball valve to solve the problems of the prior art in the background art, between valve plug and valve seat, it is inconvenient to prevent valve plug from rotating too much, leading to the increase of valve ball torque or the situation that valve plug rotates too little leading to valve ball leakage, and between by and valve seat, it is inconvenient to make by and valve seat coaxial during on-site assembly, and it is easy to produce large misalignment.

[0005] (II) technical scheme

[0006] To achieve the above object, the utility model provides the following technical scheme: a double by straight-through ball valve, comprising:

[0007] Valve seat, the valve seat is sealedly installed with valve ball, the valve ball is connected with valve stem, the valve stem extends out of the valve seat and is provided with pressing block, and the pressing block is provided with valve stem sealing ring between the valve seat;

[0008] Valve plug, the valve plug is threadedly connected on the valve seat, the right side of the valve seat is provided with valve seat limiting surface, the left side of the valve plug is provided with valve plug limiting surface, and the right side of the valve plug is provided with valve plug limiting subport;

[0009] Two core supplements, two the core supplements are respectively located inside valve seat and valve plug;

[0010] Two by, two the by are respectively located at both ends of two core supplements, the by is provided with by nut, one the by nut is threadedly connected with valve seat, another the by nut is threadedly connected with valve plug, the left side of the valve seat is provided with valve seat limiting subport, and the by is provided with by limiting subport.

[0011] Preferably, a valve plug sealing ring is arranged between the valve plug and the valve seat.

[0012] Further, two by sealing rings are arranged on both sides of the core.

[0013] Still further, a valve ball pad and a valve ball pad sealing ring are arranged on both sides of the valve ball.

[0014] (Three) beneficial effects

[0015] Compared with the prior art, the utility model provides a double by straight through ball valve has the following beneficial effects:

[0016] 1. The double by straight through ball valve, through the cooperation of the valve plug limiting surface and the valve seat limiting surface, is convenient for limiting when the valve plug and the valve seat are connected, ensures the sealing of the valve ball, stabilizes the torque when the valve ball rotates, prevents the valve plug from rotating too much, and increases the torque of the valve ball or prevents the valve plug from rotating too little, thereby preventing water leakage of the valve ball, and improves practicality.

[0017] 2. The double by straight through ball valve, through the cooperation of the by limiting subport, the valve seat limiting subport and the valve plug limiting subport, is convenient for assembling the by, ensures that the by shaft, the valve seat shaft and the valve plug shaft are basically coaxial, prevents large misalignment, reduces the probability of misalignment, and improves assembly effect. DETAILED DESCRIPTION

[0018] Figure 1 It is a structure schematic view of the cross section of the application;

[0019] Figure 2 It is a structure schematic view of the cooperation of the valve seat, the valve seat limiting surface and the like of the application;

[0020] Figure 3 It is a structure schematic view of the cooperation of the valve plug, the valve plug limiting subport and the like of the application;

[0021] Figure 4 It is a structure schematic view of the cooperation of the by and the by limiting subport of the application.

[0022] In the drawing: 1, valve seat; 2, valve ball; 3, valve rod; 4, pressing block; 5, valve rod sealing ring; 6, valve plug; 7, valve seat limiting surface; 8, valve plug limiting surface; 9, valve plug limiting subport; 10, core; 11, by; 12, by nut; 13, valve seat limiting subport; 14, by limiting subport; 15, valve plug sealing ring; 16, by sealing ring; 17, valve ball pad; 18, valve ball pad sealing ring. DETAILED DESCRIPTION

[0023] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0024] Embodiments

[0025] Please refer to Figures 1-4 A double by straight-through ball valve, comprising:

[0026] A valve seat 1, a valve ball 2 is sealingly installed in the valve seat 1, a valve rod 3 is connected to the valve ball 2, the valve rod 3 extends out of the valve seat 1 and is provided with a pressing block 4, a valve rod sealing ring is arranged between the pressing block 4 and the valve seat 1, and the valve rod sealing ring plays a sealing role at the valve rod;

[0027] A valve plug 6 is threadedly connected to the valve seat 1, a valve seat limiting surface 7 is formed on the right side of the valve seat 1, a valve plug limiting surface 8 is formed on the left side of the valve plug 6, the valve seat limiting surface 7 and the valve plug limiting surface 8 are used for limiting, and a valve plug limiting sub-hole 9 is formed on the right side of the valve plug 6.

[0028] Two core supplements 10, two core supplements 10 are respectively located inside the valve seat 1 and the valve plug 6;

[0029] Two bys 11, two bys 11 are respectively located at two ends of the two core supplements 10, a by nut 12 is sleeved on the by 11, one of the by nuts 12 is threadedly connected with the valve seat 1, the other by nut 12 is threadedly connected with the valve plug 6, a valve seat limiting sub-hole 13 is formed on the left side of the valve seat 1, a by limiting sub-hole 14 is formed on the by 11, and the by limiting sub-hole 14, the valve plug limiting sub-hole 9 and the valve seat limiting sub-hole 13 are matched to ensure that the shaft center is basically coaxial and reduce the probability of misplacement.

[0030] A valve plug sealing ring 15 is arranged between the valve plug 6 and the valve seat 1 to improve the sealing between the valve plug 6 and the valve seat 1.

[0031] Two by sealing rings 16 are arranged on both sides of the core supplement 10 to improve the sealing of both sides of the core supplement 10.

[0032] A valve ball pad 17 and a valve ball pad sealing ring 18 are arranged on both sides of the valve ball 2 to improve the sealing between the valve seat 1 and the valve ball 2.

[0033] In summary, the working principle and working process of the double Yeli straight-through ball valve are as follows: in use, the double Yeli straight-through ball valve is placed at the required use site, then in assembly, the valve plug 6 is screwed into the valve seat 1, when the valve plug limiting surface 8 contacts the valve seat limiting surface 7, the valve plug 6 is in place, the valve seat 1 and the valve plug 6 press the valve ball 2 through the valve ball gasket 17, in the case of ensuring the sealing of the valve ball 2, the torque of the valve ball 2 is stable when rotating, the valve ball 2 will not be too large in torque to rotate or even unable to rotate due to the valve plug 6 being screwed in too much, and the valve ball 2 will not have a gap with the valve ball gasket 17 to cause a sealing problem due to the valve plug 6 being screwed in too little, when the Yeli 11 is assembled with the valve seat 1, the Yeli limiting sub-port 14 and the valve seat limiting sub-port 13 can be matched to ensure that the axis of the Yeli 11 is basically coaxial with the axis of the valve seat 1, when the Yeli 11 is assembled with the valve plug 6, the Yeli limiting sub-port 14 and the valve plug limiting sub-port 9 can be matched to ensure that the axis of the Yeli 11 is basically coaxial with the axis of the valve plug 6, then the Yeli nut 12 is assembled.

[0034] The above embodiments only express the specific implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the present application. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A dual body straight-through ball valve, characterized by, Include: Valve seat (1), the valve ball (2) is sealed and installed in the valve seat (1), the valve rod (3) is connected on the valve ball (2), the valve rod (3) extends out of the valve seat (1) and is provided with a pressure block (4), the pressure block (4) is provided with a valve rod sealing ring between the valve seat (1) and the valve seat (1); The valve plug (6) is screwed on the valve seat (1), the right side of the valve seat (1) is provided with a valve seat limiting surface (7), the left side of the valve plug (6) is provided with a valve plug limiting surface (8), the right side of the valve plug (6) is provided with a valve plug limiting sub mouth (9); Two core (10), two said core (10) are located inside the valve seat (1) and the valve plug (6) respectively; Two by the order (11), two said by the order (11) are located at both ends of two core (10), the by order nut (12) is sleeved on the by order (11), one of said by order nut (12) is screwed with the valve seat (1), the other said by order nut (12) is screwed with the valve plug (6), the left side of the valve seat (1) is provided with a valve seat limiting sub mouth (13), the by order (11) is provided with a by order limiting sub mouth (14).

2. A dual seat straight-through ball valve according to claim 1, characterized in that: The valve plug (6) and the valve seat (1) are placed between the valve plug sealing ring (15).

3. A dual port ball valve as claimed in claim 2, wherein: Both sides of the core (10) are placed with two by order sealing ring (16).

4. A dual port ball valve as claimed in claim 3, wherein: Both sides of the valve ball (2) are placed with valve ball pad (17) and valve ball pad sealing ring (18).

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