CN219472895U

CN219472895U - Sealing ball valve

Info

Publication number: CN219472895U
Application number: CN202320487637.2U
Authority: CN
Inventors: 王阳锋; 吴协; 汪加豪
Original assignee: Zhejiang Hebron Controls Engineering Technology Co ltd
Current assignee: Zhejiang Hebron Controls Engineering Technology Co ltd
Priority date: 2023-03-08
Filing date: 2023-03-08
Publication date: 2023-08-04
Anticipated expiration: 2033-03-08

Abstract

The utility model relates to the technical field of ball valves. The utility model provides a sealed ball valve, includes valve body, case, driving piece, and the case is installed in the valve body, fixedly connected with valve rod on the driving piece, valve rod and case linkage set up, rotate the driving piece in order to control the flow of opening and close of ball valve, the valve body is located the case top and is equipped with the installation department that is used for installing the valve rod, be equipped with on the valve rod with installation department sealing fit's sealing washer, valve rod sealing washer, metal seal spare, be equipped with annular spacing platform in the installation department, metal seal spare is located annular spacing platform upside, the valve rod sealing washer is located annular spacing platform downside, the valve rod corresponds annular spacing platform and is equipped with the recess, and the sealing washer is located the recess, the valve rod is located metal seal spare top and is equipped with dish spring and nut, nut and valve rod screw-thread fit and contradict with dish spring upper end. By adopting the technical scheme, the utility model provides the sealing ball valve, and the valve rod is provided with three sealing elements, so that the sealing effect is good.

Description

Sealing ball valve

Technical Field

The utility model relates to the technical field of ball valves, in particular to a sealing ball valve.

Background

The ball valve has the main characteristics of compact structure, reliable sealing, simple structure, convenient maintenance, difficult erosion of the sealing surface and the spherical surface by media in a closed state, easy operation and maintenance, suitability for common working media such as water, solvents, acid, natural gas and the like, and also suitable for media with severe working conditions such as oxygen, hydrogen peroxide, methane, ethylene and the like, so that the ball valve is widely applied in various industries.

In the prior art, the patent with the publication number of CN204176023U discloses a ball valve, in particular to a sanitary ball valve used in the field of medicines. The utility model adopts the following technical scheme: a sanitary ball valve, characterized in that: the diameter of the through hole arranged on the valve core is the same as the diameter of the flow channel on the valve body, sealing pieces are arranged at the left end and the right end of the valve core in the valve body, round holes are formed in the left sealing piece and the right sealing piece, the diameter of the round holes is the same as the diameter of the flow channel and is arranged with the same central axis of the flow channel, the through hole, the round holes and the flow channel are positioned on the same central axis when the ball valve is at the maximum opening, one end of the valve rod is fixedly connected with the upper end of the valve core, and at least two sealing rings are arranged between the valve rod and the valve cover.

In the long-time use process of the ball valve, the sealing ring between the valve rod and the valve cover is worn, aged and loosened, so that a small amount of liquid or gas possibly enters a gap formed by the valve body, the valve core and the sealing element, and bacteria are caused to be accumulated and accumulated, or the liquid or gas in a polluted flow channel in the internal flow channel of the valve body enters the valve body, and the sealing effect is poor.

Disclosure of Invention

The purpose of the utility model is that: in order to overcome the defects of the prior art, the utility model provides the sealing ball valve, and the valve rod is provided with three sealing elements, so that the sealing effect is good.

The technical scheme of the utility model is as follows: the utility model provides a sealed ball valve, includes valve body, case, driving piece, and the case is installed in the valve body, fixedly connected with valve rod on the driving piece, valve rod and case linkage set up, and the driving piece can drive the rotation of valve rod and case to the flow is opened and close of control ball valve, the valve body is located the case top and is equipped with the installation department that is used for installing the valve rod, be equipped with on the valve rod with installation department sealing fit's sealing washer, valve rod sealing washer, metal seal spare, be equipped with annular spacing platform in the installation department, metal seal spare is located annular spacing platform upside, the valve rod sealing washer is located annular spacing platform downside, the valve rod corresponds annular spacing platform and is equipped with the recess, and the sealing washer is located the recess, the valve rod is located metal seal spare top and is equipped with dish spring and nut, nut and valve rod screw-thread fit and contradict with dish spring upper end.

Adopt above-mentioned still further setting, sealing washer and valve rod sealing washer are soft seal, in ball valve use, soft seal can reach better sealed effect basically, but in high temperature environment, because soft seal's self characteristic, it is poor to lead to the leakproofness, there is the risk of revealing, and metal seal then can not receive high temperature influence, the dish spring both ends are contradicted respectively on nut and metal seal, the nut can reciprocate on the valve rod through the screw thread, thereby adjust the pressure size of applying the dish spring, the dish spring is located metal seal top, exert pressure to metal seal, make metal seal form hard seal between valve rod and valve body, the dish spring has the stroke weak point, the load is big, the advantage of required space is little. In the long-time use process of the ball valve, certain abrasion exists on the metal sealing element, the abrasion is compensated through the elastic loading of the disc spring, the failure risk caused by the abrasion can be reduced, and the service life of the ball valve is greatly prolonged.

Still further, the present utility model is provided with: the anti-loosening device is characterized in that an anti-loosening piece is arranged above the nut, two ends of the anti-loosening piece are bent downwards to form a tight hoop on the side wall of the nut, a square hole matched with the upper end of the valve core is formed in the anti-loosening piece, and the anti-loosening piece drives the nut and the valve rod to synchronously rotate.

Adopt above-mentioned still further setting, the valve rod upper end is the cuboid, and the centre is the cylinder, and the screw thread is located the cylinder, and locking piece card is established on the cuboid and is rotated with the valve rod in step, and the nut is held at locking piece both ends, drives nut and valve rod and rotates in step, and when avoiding the valve rod to rotate, the nut is not hard up because the screw thread on the valve rod to influence the dish spring and to the conflict effect of metal seal spare to avoid revealing the risk, it is more reliable to seal.

Still further, the present utility model is provided with: the valve body comprises a first valve body and a second valve body, a valve seat for installing a valve core is arranged in the first valve body, the first valve body and the second valve body are mutually buckled to seal the valve core, the first valve body and the second valve body are connected through bolts, the bolts are positioned in the first valve body, and a valve body sealing ring is arranged at the joint of the first valve body and the second valve body.

Adopt above-mentioned still further setting, first valve body one-piece design, case and disk seat are installed to the inner chamber, inner chamber and left runner intercommunication, reduce the seal structure between case and the left runner, reduce the cost, overall structure is succinct, first valve body and second valve body fixed connection, the inner chamber is sealed completely and is not at the dead angle, the valve body sealing washer improves the leakproofness of valve body inner chamber, the disk seat can select completely to wrap or half package, can realize sealed not at the dead angle, the bolt design is inside first valve body, reduce outside outstanding for the valve body outward appearance is clean and tidy, the cleanness of being convenient for.

Still further, the present utility model is provided with: the mounting portion is integrally formed with the first valve body.

By adopting the further arrangement, no dead angle exists in the first valve body, and the sanitation level is realized.

Still further, the present utility model is provided with: the driving piece is a handle, the handle comprises a head part, a body section and a tail part, the head part is covered outside the valve rod and fixedly connected with the valve rod, and the tail part is provided with an anti-skid sleeve.

By adopting the technical scheme, the head is provided with the fixing hole matched with the upper end of the valve rod, the head is shaped like a cover body and is arranged above the mounting part, the head and the mounting part wrap all parts on the valve rod, the parts are reduced to be exposed, the appearance of the ball valve is kept neat, the head is printed with the switch indication mark, a user is convenient to control the switch of the ball valve, the tail part of the handle is sleeved with the anti-skid sleeve, and the hand feeling is improved.

Drawings

FIG. 1 is a first block diagram of a first embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a first embodiment of the present utility model;

FIG. 3 is a second block diagram of a first embodiment of the present utility model;

fig. 4 is a block diagram of a second embodiment of the present utility model.

In the figure: 1. a valve body; 11. a first valve body; 12. a second valve body; 13. a mounting part; 14. an annular boss; 15. a valve body sealing ring; 2. a valve core; 3. a driving member; 31. an anti-skid sleeve; 4. a valve stem; 41. a seal ring; 42. a valve stem seal ring; 43. a metal seal; 44. a groove; 5. a disc spring; 6. a nut; 7. a locking piece; 8. a valve seat.

Description of the embodiments

The technical solutions of the present embodiment will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all directional indications (such as up, down, front, and rear … …) in the description of the present utility model are merely for explaining the relative positional relationship, movement, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. In the description of the present utility model, "a number" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In addition, the technical solutions of the embodiments of the present utility model may be combined with each other, but it is necessary to base the implementation on the basis of those skilled in the art, and when the technical solutions are contradictory or cannot be implemented, it should be considered that the combination of the technical solutions does not exist, and is not within the scope of protection claimed by the present utility model.

The first embodiment is shown in fig. 1-3, a sealing ball valve, which comprises a valve body 1, a valve core 2 and a driving piece 3, wherein the valve core 2 is installed in the valve body 1, the valve core 2 is provided with a valve rod 4 in a linkage way, the driving piece 3 can drive the valve rod 4 and the valve core 2 to rotate so as to control the opening and closing flow of the ball valve, a mounting part 13 for mounting the valve rod 4 is arranged above the valve core 2, a sealing ring 41 in sealing fit with the mounting part 13, a valve rod sealing ring 42 and a metal sealing piece 43 are arranged on the valve rod 4, an annular limiting table 14 is arranged in the mounting part 13, the metal sealing piece 43 is arranged on the upper side of the annular limiting table 14, the valve rod sealing ring 42 is arranged on the lower side of the annular limiting table 14, three sealing structures are arranged on the valve rod 4, the sealing ring 4 is effectively improved in the sealing performance of the ball valve, the valve rod 4 is provided with a groove 44 corresponding to the annular limiting table 14, the sealing ring 41 is arranged in the groove 44, and the sealing ring 41 and the valve rod sealing ring 42 are soft seals, in the ball valve in the use process, but the soft sealing can basically achieve good sealing effect, the sealing performance is poor due to the self-characteristics of the soft sealing, the soft sealing performance, the leakage risk exists, the metal sealing piece 43 is not influenced by the high-temperature sealing spring, the metal sealing piece 4 is arranged on the valve spring, the metal sealing piece 6, the metal sealing piece is not influenced by the metal sealing spring 5, the metal sealing piece 4 is arranged on the valve body and the valve 4 and the metal spring 5 and the metal sealing piece 5 is in the sealing disk 5 and the metal sealing disk 5 and the sealing disk 5. In the long-time use process of the ball valve, certain abrasion exists on the metal sealing piece 43, the abrasion is compensated by the elastic loading of the disc spring 5, the failure risk caused by the abrasion can be reduced, and the service life of the ball valve is greatly prolonged.

As shown in fig. 2-3, the upper end of the valve rod 4 is rectangular, the middle is a cylinder, the screw thread is located above the cylinder, the nut 6 is connected to the valve rod 4 through the screw thread, the locking piece 7 is arranged above the nut 6, two ends of the locking piece 7 are downwards bent to form a tight hoop on the side wall of the nut 6, square holes matched with the upper end of the valve core 2 are formed in the locking piece 7, the locking piece 7 is clamped and synchronously rotates with the valve rod 4 on the rectangular, the nut 6 is held at two ends of the locking piece 7, the nut 6 is driven to synchronously rotate with the valve rod 4, when the valve rod 4 is prevented from rotating, the nut 6 is loosened due to the screw thread on the valve rod 4, the interference effect of the disc spring 5 on the metal sealing piece 43 is affected, therefore, the leakage risk is avoided, and the sealing is more reliable.

As shown in fig. 2, the valve body 1 includes first valve body 11 and second valve body 12, first valve body 11 and installation department 13 integrated into one piece for first valve body 11 is inside to have the dead angle, realize sanitary level, case 2 and disk seat 8 are installed to first valve body 11 inner chamber, disk seat 8 optional is full package or half package, can realize sealed dead angle free, inner chamber and left runner intercommunication, reduce the seal structure between case 2 and the left runner, reduce the cost, overall structure is succinct, first valve body 11 and the mutual lock of second valve body 12 are sealed to case 2, the sealed dead angle free of inner chamber is fully packaged, first valve body 11 and second valve body 12 pass through bolted connection, the bolt is located inside first valve body 11, reduce outside outstanding, make valve body 1 outward appearance clean and tidy, be convenient for clean, the junction of first valve body 11 and second valve body 12 is equipped with valve body sealing washer 15, valve body sealing washer 15 improves the leakproofness of valve body 1 inner chamber.

As shown in fig. 1, the driving part 3 is a handle, the handle comprises a head, a body section and a tail, the head is covered outside the valve rod 4 and fixedly connected with the valve rod 4, a fixing hole matched with the upper end of the valve rod 4 is formed in the head, the head is shaped like a cover body and is arranged above the mounting part 13, each part on the valve rod 4 is wrapped by the head and the mounting part 13, the parts are reduced to be exposed outside, the appearance of the ball valve is kept clean, the head is printed with a switch indication mark, a user is convenient to control the switch of the ball valve, and the tail of the handle is sleeved with an anti-skid sleeve 31, so that the hand feeling is improved.

In the second embodiment, as shown in fig. 4, the driving member 3 is a cylinder, which is different from the first embodiment.

Claims

1. The utility model provides a sealing ball valve, includes valve body (1), case (2), driving piece (3), and case (2) are installed in valve body (1), fixedly connected with valve rod (4) on driving piece (3), valve rod (4) and case (2) linkage set up, and rotation of driving piece (3) drive valve rod (4) and case (2) is equipped with installation department (13) that are used for installing valve rod (4) in order to control the flow of ball valve, characterized in that, valve body (1) are located case (2) top, be equipped with on valve rod (4) with installation department (13) sealing washer (41), valve rod sealing washer (42), metal seal (43) with sealing washer (13) sealed, be equipped with annular spacing table (14) in installation department (13), metal seal (43) are located annular spacing table (14) upside, valve rod sealing washer (42) are located annular spacing table (14) downside, valve rod (4) correspond annular spacing table (14) and are equipped with recess (44), sealing washer (41) are located recess (44), valve rod (4) are located metal seal (43) top and are equipped with dish (5), the nut (6) is in threaded fit with the valve rod (4) and is abutted against the upper end of the disc spring (5).

2. The sealing ball valve according to claim 1, wherein a locking piece (7) is arranged above the nut (6), two ends of the locking piece (7) are bent downwards to form a tight hoop on the side wall of the nut (6), square holes matched with the upper end of the valve core (2) are formed in the locking piece (7), and the locking piece (7) drives the nut (6) to rotate synchronously with the valve rod (4).

3. A sealing ball valve according to claim 1 or 2, characterized in that the valve body (1) comprises a first valve body (11) and a second valve body (12), a valve seat (8) for installing the valve core (2) is arranged in the first valve body (11), the first valve body (11) and the second valve body are mutually buckled to seal the valve core (2), the first valve body (11) and the second valve body (12) are connected through bolts, the bolts are positioned in the first valve body (11), and a valve body sealing ring (15) is arranged at the joint of the first valve body (11) and the second valve body (12).

4. A sealing ball valve according to claim 3, characterized in that the mounting portion (13) is formed integrally with the first valve body (11).

5. A sealing ball valve according to claim 1 or 2, characterized in that the driving member (3) is a handle, the handle comprises a head part, a body section and a tail part, the head part is covered outside the valve rod (4) and fixedly connected with the valve rod (4), and the tail part is provided with an anti-slip sleeve (31).