CN215059628U

CN215059628U - Adjustable sealing angle leakage-free large-caliber gate valve

Info

Publication number: CN215059628U
Application number: CN202120294306.8U
Authority: CN
Inventors: 殷方方; 曹成; 孙涛
Original assignee: Shangdong Zhongli High Pressure Valve Co ltd
Current assignee: Shangdong Zhongli High Pressure Valve Co ltd
Priority date: 2021-02-02
Filing date: 2021-02-02
Publication date: 2021-12-07
Anticipated expiration: 2031-02-02

Abstract

The utility model relates to the technical field of gate valves, and discloses an adjustable sealing angle leakage-free large-caliber gate valve, which comprises a valve body, a gate plate and an actuating mechanism; the top of valve body has a set of vertical support through flange fixed mounting, and the top of support is passed through flange detachable installation and is used for controlling the actuating mechanism of gate valve operation, the lower part left and right sides of valve body is provided with the valve, and the downside of valve body is inside to be provided with a set of flashboard, and the flashboard sets up to two flashboard type structures, and the flashboard is through independent simple and easy processing technology, and two sets of two flashboard type structures inside the flashboard are connected through a set of round pin axle, and sell epaxial fit type and be connected with compound axle sleeve, the inside of valve is provided with the flashboard guide rail, and the portable connection of flashboard on the flashboard guide rail, and the middle part of flashboard is provided with a set of vertical fore-set, the upside of fore-set is provided with a set of valve rod, valve rod and fore-set threaded connection, the bottom fixed mounting of valve rod has the fixed block that the diameter is greater than the valve rod.

Description

Adjustable sealing angle leakage-free large-caliber gate valve

Technical Field

The utility model relates to a gate valve technical field specifically is sealed angle does not have and reveals heavy-calibre gate valve with adjustable.

Background

The large-caliber gate valve becomes a general phenomenon after being sealed and leaked in the actual operation process, the large-caliber valve seat size causes the deviation in the machining process, the sealing surface is difficult to grind due to the reason, and the valve opening and closing piece is 1 with the valve body basically: 1, the wearing parts can not be effectively replaced and maintained until now.

Conventional large-diameter gate valve structure: the single flashboard wedge type needs to adopt an angle plate tool to process a valve body and a flashboard of the valve, and requires the sealing angle of the valve body to coincide with the angle of the flashboard and is assisted with grinding to realize sealing of the valve body and the flashboard. When the wedge plate tool is used for respectively processing the valve body and sealing the flashboard, because the size is large, the pretightening or the correction can cause large errors, and the processing and the clearance angle coincidence are hardly realized.

Double-gate-plate parallel type, although most of large-caliber gate valves adopt the structural design, the valve is forced to open and close a fitting sealing surface to establish sealing, the parallel type needs a large valve moment, the valve is generally designed to be an upper wedge block and a lower wedge block and is assisted by a spring assembly to enable the double-gate-plate fitting sealing, the upper wedge block and the lower wedge block and the spring assembly are unbalanced in stress, the forced sealing force is insufficient and is hardly leaked, once the valve is leaked, the sealing can be hardly established again, and the gate valve capable of solving the problems needs to be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sealed angle does not have the heavy-calibre gate valve of revealing with adjustable 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: the adjustable sealing angle non-leakage large-caliber gate valve comprises a valve body, a gate plate and an actuating mechanism; a set of vertical support is fixedly installed at the top of the valve body through a connecting flange, and a set of actuating mechanism used for controlling the operation of the gate valve is detachably installed at the top end of the support through the connecting flange. The left side and the right side of the lower part of the valve body are provided with valves, a group of flashboards are arranged inside the lower side of the valve body, the flashboards are of double-flashboard type structures, and the flashboards are independent and simple in machining process and can be machined without a wedge-degree tool only by improving the finish degree of a sealing surface. Two sets of double-gate version type structures of flashboard inside are connected through a set of round pin axle, and sell epaxial fit type and be connected with compound axle sleeve, are convenient for realize the nimble of flashboard through round pin axle and compound axle sleeve and strut with the operation of shrink to at the in-process of processing, only need seal minimum interval control to the valve body, appear revealing when the valve seal, the flashboard still exists the compensation space and carries out the sealed specific pressure of establishhing once more.

The inside of valve is provided with the flashboard guide rail, and the portable connection of flashboard is on the flashboard guide rail, and the middle part of flashboard is provided with a set of vertical fore-set, the upside of fore-set is provided with a set of valve rod, and valve rod and fore-set threaded connection can restrict the fore-set through the valve rod and take place the displacement during opening and close. The bottom end of the valve rod is fixedly provided with a fixed block with the diameter larger than that of the valve rod, and the fixed block is used for limiting the valve rod to only do vertical lifting movement.

As a further aspect of the present invention: a group of packing is arranged inside the right side of the connecting flange at the joint of the valve body and the support, and a packing gland is arranged at the top of the packing.

As a further aspect of the present invention: the top end of the head of the fixed block is of an inclined plane structure, so that the flashboard can be separated from the sealing surface at the moment of opening the valve, and the valve can be normally opened.

As a further aspect of the present invention: the flashboard is processed through an independent simple processing technology, and only the smooth finish of a sealing surface needs to be improved without a wedge degree tool.

As a further aspect of the present invention: the top post wedge degree face only needs to improve the smoothness and can not carry out accurate angle processing for prop up the flashboard when the valve is closed, realize that the two-way wedge degree of flashboard is sealed, because the flashboard adopts the round pin hub connection, can reach omnipotent angle supporting.

Compared with the prior art, the beneficial effects of the utility model are that: this valve only needs to seal the minimum interval control to the valve body through providing a brand-new heavy-calibre double gate board seal structure gate valve, reveals when the valve is sealed, and the flashboard still exists the compensation space and carries out the sealed specific pressure of establishhing once more, and its processing technology is simplified to the optimal design structure to in control machining precision, thereby improve the valve and get sealing performance.

Drawings

Fig. 1 is a schematic view of a front view internal structure of an adjustable sealing angle non-leakage large-caliber gate valve.

Fig. 2 is a schematic side view of the internal structure of the adjustable sealing angle leak-free large-diameter gate valve.

Fig. 3 is an enlarged schematic structural diagram of a1 in fig. 2.

Wherein: 1. the valve comprises a valve body 2, a pin shaft 3, a composite shaft sleeve 4, a gate plate 5, a top column 6, a sealing ring 7, a bolt 8, a nut 9, a valve rod 10, a valve cover, 11, packing 12, a packing gland 13, a support 14, a connecting flange 15, an actuating mechanism 16 and a gate plate guide rail.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example one

Referring to fig. 1-3, the adjustable sealing angle non-leakage large-caliber gate valve includes a valve body 1, a gate plate 4, and an actuator 15; a set of vertical support 13 is fixedly installed at the top of the valve body 1 through a connecting flange 14, and a set of actuating mechanism 15 used for controlling the operation of the gate valve is detachably installed at the top end of the support 13 through the connecting flange. The left and right sides of the lower portion of the valve body 1 are provided with valves, a group of flashboards 4 are arranged inside the lower side of the valve body 1, the flashboards 4 are of a double-flashboard type structure, the flashboards 4 are processed by an independent simple processing technology, and only the smooth finish of a sealing surface needs to be improved without a wedge degree tool. Two sets of two floodgate version type structures of flashboard 4 inside are connected through a set of round pin axle 2, and the cooperation formula is connected with compound axle sleeve 3 on the round pin axle 2, are convenient for realize the nimble of flashboard 4 through round pin axle 2 and compound axle sleeve 3 and strut with the operation of shrink to at the in-process of processing, only need seal minimum interval control to valve body 1, appear revealing when valve seal, flashboard 4 still has the compensation space and carries out the sealed pressure ratio of establishhing once more. A group of packing 11 is arranged inside the right side of a connecting flange at the joint of the valve body 1 and the support 13, and a packing gland 12 is arranged at the top of the packing 11.

The inside of valve is provided with flashboard guide rail 16, and the portable connection of flashboard 4 is on flashboard guide rail 16, and the middle part of flashboard 4 is provided with a set of vertical fore-set 5, the upside of fore-set 5 is provided with a set of valve rod 9, and valve rod 9 and fore-set 5 threaded connection can restrict the fore-set 5 through valve rod 9 and take place the displacement during opening and close. The bottom fixed mounting of valve rod 9 has the fixed block that the diameter is greater than valve rod 9 for the vertical elevating movement can only be done to the restriction valve rod 9, the head top of fixed block sets up to the inclined plane structure, ensures that the valve opens flashboard 4 in the twinkling of an eye and can break away from sealed face, ensures that the valve normally opens.

The working principle is as follows: when the valve is closed, the actuating mechanism 15 applies downward external force to the valve rod 9, the valve rod 9 pushes the ejection column 5 to apply acting force to the flashboard 4, the flashboard 4 can be opened to establish sealing specific pressure with the sealing surfaces of the valve bodies 1 on two sides to realize sealing, when the valve is opened, the valve rod 9 drives the ejection column 5 to do lifting motion, and due to the structural reason of the valve rod 9, the flashboard 4 can be rapidly separated from sealing and can perform lifting motion in the position space specified by the flashboard guide rail 16 to realize the circulation of fluid.

Example two

On the basis of the first embodiment, the gate plate 4 is processed by an independent simple processing technology, does not need a wedge tooling and only needs to improve the finish degree of a sealing surface.

The 5 wedge degrees faces of the support pillar only need to improve the smoothness and cannot be machined at an accurate angle, the gate plate is supported when the valve is closed, the two-way wedge degree sealing of the gate plate 4 is achieved, and the gate plate 4 is connected through the pin shaft, so that the universal angle matching can be achieved.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. An adjustable sealing angle non-leakage large-caliber gate valve comprises a valve body (1), a gate plate (4) and an actuating mechanism (15); the gate valve is characterized in that a group of vertical supports (13) are fixedly mounted at the top of the valve body (1) through a connecting flange (14), a group of actuating mechanisms (15) used for controlling the operation of the gate valve are detachably mounted at the top end of each support (13) through the connecting flange, valves are arranged on the left side and the right side of the lower portion of the valve body (1), a group of gate plates (4) are arranged inside the lower side of the valve body (1), the gate plates (4) are arranged into a double-gate-plate type structure, the two groups of double-gate-plate type structures inside the gate plates (4) are connected through a group of pin shafts (2), a composite shaft sleeve (3) is connected on the pin shafts (2) in a matching mode, a gate plate guide rail (16) is arranged inside the valve, the gate plates (4) are movably connected on the gate plate guide rail (16), a group of vertical jacking columns (5) are arranged in the middle of the gate plates (4), a group of valve rods (9) are arranged on the upper sides of the jacking columns (5), valve rod (9) and fore-set (5) threaded connection, the bottom fixed mounting of valve rod (9) has the fixed block that the diameter is greater than valve rod (9).

2. The adjustable sealing angle non-leakage large-caliber gate valve according to claim 1, characterized in that a group of packing (11) is arranged inside the right side of the connecting flange at the joint of the valve body (1) and the support (13), and a packing gland (12) is arranged on the top of the packing (11).

3. The adjustable sealing angle leakage-free large-caliber gate valve according to claim 2, wherein the top end of the head of the fixing block is provided with an inclined surface structure.