CN210770620U

CN210770620U - Ball valve capable of preventing filler from loosening

Info

Publication number: CN210770620U
Application number: CN201921099652.XU
Authority: CN
Inventors: 董娜
Original assignee: Linke Fluid Equipment Dalian Co Ltd
Current assignee: Linke Fluid Equipment Dalian Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-06-16
Anticipated expiration: 2029-07-12

Abstract

The utility model discloses a ball valve for preventing filler from loosening, which comprises a valve body, a valve rod and a ball valve, wherein the ball valve is arranged in the valve body, the top of the ball valve is provided with the valve rod, one end of the valve body is provided with a valve cover, the two adjacent ends of the valve body and the valve cover are respectively provided with a first connecting block, the top of the valve rod is provided with a sealing gasket, the top of the valve body is connected with a valve rod sleeve, the top of the valve rod is connected with a connecting rod, the connecting rod is arranged in the valve rod sleeve, the outer side of the connecting rod is sleeved with a filler outer cylinder, the bottom of the filler outer cylinder is provided with a filler pad, the filler is arranged in the filler outer cylinder, the upper and lower ends of the filler are respectively provided with a retaining ring, the top of the filler outer, prevent that the packing is not hard up to reveal, improved the sealing in valve body department and the valve rod department of ball valve.

Description

Ball valve capable of preventing filler from loosening

Technical Field

The utility model relates to a ball valve technical field specifically is a prevent not hard up ball valve of filler.

Background

The opening and closing piece (ball body) of the ball valve is driven by the valve rod and rotates around the axis of the ball valve; the packing is a dynamic seal packing material used to fill the space of the valve packing box to prevent leakage of media through the valve stem and the packing box space. The packing department of valve is not hard up leaks and leads to the unable work of ball valve easily, can lead to the valve rod serious wear, reduces the life of ball valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a prevent to pack not hard up ball valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a ball valve for preventing filler from loosening comprises a valve body, a valve rod and a ball valve, wherein the ball valve is arranged in the valve body, the valve rod is arranged at the top of the ball valve, a valve cover is arranged at one end of the valve body, two adjacent ends of the valve body and the valve cover are respectively provided with a first connecting block, a sealing gasket is arranged at the top of the valve rod, a valve rod sleeve is connected at the top of the valve body, and the top of the valve rod is connected with a connecting rod, the connecting rod is arranged in a valve rod sleeve, the outer side of the connecting rod is sleeved with a packing outer barrel, the bottom of the packing outer barrel is provided with a packing pad, packing is arranged in the packing outer barrel, the upper end and the lower end of the packing are provided with retaining rings, the top of the packing outer barrel is provided with a packing pressing block, the top of the packing pressing block is provided with a packing gland, the top of the packing gland is provided with a positioning gasket, the top of the positioning gasket is provided with a connecting sleeve, a connecting hole is.

Preferably, the packing compression block is composed of a first compression pad, a plurality of compression springs and a second compression pad, the first compression pad and the second compression pad are arranged at two ends of each compression spring, a compression bump is arranged at the bottom of the second compression pad, and the compression bump is arranged at the top of the packing.

Preferably, the first connecting block of the valve body and the first connecting block of the valve cover are both provided with screw holes matched with the connecting bolts, and a sealing gasket is arranged between the two adjacent first connecting blocks.

Preferably, one end of the positioning gasket is fixedly connected with a connecting lug, the top of the valve rod sleeve at the top of the valve body is provided with a second connecting block, and the second connecting block and the connecting lug are both provided with screw holes matched with the connecting bolts.

Preferably, the retaining rings are arranged at the upper end and the lower end of the packing outer cylinder, and the retaining rings are in interference fit with the connecting rod at the top end of the valve rod.

Compared with the prior art, the beneficial effects of the utility model are that: the packing compressing block is arranged between the packing gland and the packing to compress the packing, so that the loose leakage of the packing is prevented, the sealing at the valve body and the valve rod of the ball valve is improved, the safety of the ball valve is ensured, and the service life of the ball valve is prolonged; the locating washer is convenient to connect the wrench and the valve body through the matching of the connecting lug and the connecting block II, and the ball valve is convenient to control through the wrench.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is the structure diagram of the packing compact block of the present invention.

In the figure: 1. a valve body; 2. a valve stem; 21. a connecting rod; 3. a ball valve; 4. a valve cover; 5. a first connecting block; 6. a connecting bolt; 7. a gasket; 8. a filler outer cylinder; 81. a retaining ring; 9. a filler; 10. a packing gland; 11. positioning the gasket; 12. connecting sleeves; 13. connecting holes; 14. a wrench; 15. a connection bump; 16. a second connecting block; 17. a packing compact block; 171. a first compression pad; 172. a compression spring; 173. a second compression pad; 174. compressing the bump; 18. and (4) a filler pad.

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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: a ball valve for preventing packing from loosening comprises a valve body 1, a valve rod 2 and a ball valve 3, wherein the ball valve 3 is arranged in the valve body 1, the top of the ball valve 3 is provided with the valve rod 2, one end of the valve body 1 is provided with a valve cover 4, two adjacent ends of the valve body 1 and the valve cover 4 are respectively provided with a first connecting block 5, the top of the valve rod 2 is provided with a sealing gasket 7, the top of the valve body 1 is connected with a valve rod sleeve, the top of the valve rod 2 is connected with a connecting rod 21, the connecting rod 21 is arranged in the valve rod sleeve, the outer side of the connecting rod 21 is sleeved with a packing outer cylinder 8, the bottom of the packing outer cylinder 8 is provided with a packing pad 18, the packing 9 is arranged in the packing outer cylinder 8, the upper end and the lower end of the packing 9 are respectively provided with a retaining, a connecting hole 13 is arranged in the connecting sleeve 12, the top end of the connecting rod 21 is sleeved in the connecting hole 13, and a wrench 14 is fixedly connected to the outer side of the connecting sleeve 12. Through set up packing compact heap 17 between gland 10 and packing 9, compress tightly packing 9, prevent that packing 9 is not hard up to reveal, improved the valve body of ball valve and located and the sealed of valve rod department, guaranteed the security of ball valve, prolong the life of this ball valve.

The packing pressing block 17 is composed of a first pressing pad 171, a plurality of pressing springs 172 and a second pressing pad 173, the first pressing pad 171 and the second pressing pad 173 are disposed at two ends of the pressing springs 172, a pressing protrusion 174 is disposed at the bottom of the second pressing pad 173, and the pressing protrusion 174 is disposed at the top of the packing 9. The packing gland 10 is installed by aligning the pressing protrusion 174 of the packing pressing block 17 with the packing 9, the packing gland 10 is pressed downward to press the first pressing pad 171, the pressing spring 172 is pressed after the first pressing pad 171 is pressed, then the pressing spring 172 presses the second pressing pad 173, and the second pressing pad 173 presses the pressing protrusion 174 to press the packing 9, thereby preventing the packing from loosening.

All be provided with on connecting block 5 of valve body 1 and the connecting block 5 of valve gap 4 with connecting bolt 6 complex screw, and be provided with sealed 7 between two adjacent connecting block 5, the one end at valve body 1 is installed to valve gap 4 to the connection of connecting block 5.

One end of the positioning gasket 11 is fixedly connected with a connecting convex block 15, the top of the valve rod sleeve at the top of the valve body 1 is provided with a second connecting block 16, and the second connecting block 16 and the connecting convex block 15 are both provided with screw holes matched with the connecting bolts 6. Through the connection of the second connecting block 16 and the connecting lug 15, the connecting sleeve 12 is convenient to install on the top of the valve body 1.

The retaining rings 81 are arranged at the upper end and the lower end of the packing outer cylinder 8, the retaining rings 81 are in interference fit with the connecting rod 21 at the top end of the valve rod 2, the retaining rings 81 and the connecting rod 21 have the requirement on the matching precision, the retaining rings 81 are non-bendable retaining rings, so that the load is transferred to the packing 9 from the pressing ring, and sufficient plasticity can keep the packing material to achieve a sealed shape, and the packing 9 is prevented from being extruded out of the packing outer cylinder 8.

The working principle is as follows: when the valve is used, the valve cover 4 is connected with the valve body 1 through the connection of the first connecting block 5 and the connecting bolt 6, the packing pad 18 is placed at the bottom, the retaining ring 81 is sleeved on the outer side of the connecting rod 21, the outer packing cylinder 8 is sleeved on the outer side of the retaining ring 81, the bottom of the outer packing cylinder 8 is arranged at the top of the packing pad 18, the packing 9 enters the outer packing cylinder 8, the retaining ring 81 is sleeved on the top of the packing 9, the pressing lug 174 of the packing pressing block 17 is aligned with the packing 9, the packing pressing cover 10 is installed, the packing pressing cover 10 is pressed downwards to press the first pressing pad 171, the pressing spring 172 is pressed by the first pressing pad 171, then the second pressing pad 173 is pressed by the pressing spring 172, the pressing lug 174 is pressed by the second pressing pad 173 to press the packing 9 to prevent the packing from loosening, the connecting lug 15 at one end of the positioning gasket 11 is connected with the second, meanwhile, the connecting hole 13 of the connecting sleeve 12 is sleeved on the top end of the connecting rod 21, so that the wrench 14 can drive the valve rod 2 to rotate conveniently.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevent not hard up ball valve of packing, includes valve body (1), valve rod (2) and ball valve (3), its characterized in that: a ball valve (3) is arranged in a valve body (1), a valve rod (2) is arranged at the top of the ball valve (3), a valve cover (4) is arranged at one end of the valve body (1), connecting blocks I (5) are respectively arranged at two adjacent ends of the valve body (1) and the valve cover (4), a sealing gasket (7) is arranged at the top of the valve rod (2), a valve rod sleeve is connected at the top of the valve body (1), a connecting rod (21) is connected at the top of the valve rod (2), the connecting rod (21) is arranged in the valve rod sleeve, a packing outer cylinder (8) is sleeved at the outer side of the connecting rod (21), a packing gasket (18) is arranged at the bottom of the packing outer cylinder (8), packing (9) is arranged in the packing outer cylinder (8), retaining rings (81) are respectively arranged at the upper end and the lower end of the packing, the top of the packing gland (10) is provided with a positioning gasket (11), the top of the positioning gasket (11) is provided with a connecting sleeve (12), the connecting sleeve (12) is internally provided with a connecting hole (13), the top end of the connecting rod (21) is sleeved in the connecting hole (13), and the outer side of the connecting sleeve (12) is fixedly connected with a wrench (14).

2. A ball valve for preventing a packing from loosening according to claim 1, wherein: the packing pressing block (17) is composed of a first pressing pad (171), a plurality of pressing springs (172) and a second pressing pad (173), the first pressing pad (171) and the second pressing pad (173) are arranged at two ends of the pressing springs (172), pressing convex blocks (174) are arranged at the bottom of the second pressing pad (173), and the pressing convex blocks (174) are arranged at the top of the packing (9).

3. A ball valve for preventing a packing from loosening according to claim 1, wherein: all be provided with on connecting block (5) of valve body (1) and connecting block (5) of valve gap (4) with connecting bolt (6) complex screw, and be provided with sealed pad (7) between two adjacent connecting block (5).

4. A ball valve for preventing a packing from loosening according to claim 1, wherein: one end of the positioning gasket (11) is fixedly connected with a connecting lug (15), the top of the valve rod sleeve at the top of the valve body (1) is provided with a second connecting block (16), and the second connecting block (16) and the connecting lug (15) are both provided with screw holes matched with the connecting bolts (6).

5. A ball valve for preventing a packing from loosening according to claim 1, wherein: the retaining rings (81) are arranged at the upper end and the lower end of the packing outer cylinder (8), and the retaining rings (81) are in interference fit with the connecting rod (21) at the top end of the valve rod (2).