阅读说明：本技术 一种旋塞阀的密封结构 (Sealing structure of plug valve ) 是由 田洪卫 欧丹 于 2020-09-02 设计创作，主要内容包括：本发明公开了一种旋塞阀的密封结构,包括旋塞机构、主密封机构、副密封机构和密封垫三；旋塞机构包括壳体,所述壳体的内部左右两侧均设有密封垫三,且壳体的进出口分别位于两个密封垫三的中部,所述壳体的内部套接有旋塞,所述旋塞的底侧和壳体的内部底侧之间设有定位机构,所述旋塞的上表面通过固定丝连接有压板,所述旋塞的上表面设有阀杆,所述阀杆贯穿压板的上表面,所述壳体的进出口上均设有连接机构；主密封机构包括密封壳体,所述密封壳体的内部设有两个密封垫一。该发明可以避免金属塞体与阀体之间的直接接触造成磨损,可以防止密封型造成损坏,不易发生液体渗漏,不影响旋塞阀的使用寿命。(The invention discloses a sealing structure of a plug valve, which comprises a plug valve mechanism, a main sealing mechanism, an auxiliary sealing mechanism and a sealing gasket III; the faucet mechanism comprises a shell, wherein the left side and the right side of the inside of the shell are respectively provided with a third sealing gasket, an inlet and an outlet of the shell are respectively positioned in the middle of the third sealing gaskets, a faucet is sleeved inside the shell, a positioning mechanism is arranged between the bottom side of the faucet and the bottom side of the inside of the shell, the upper surface of the faucet is connected with a pressing plate through a fixing wire, the upper surface of the faucet is provided with a valve rod, the valve rod penetrates through the upper surface of the pressing plate, and the inlet and the outlet of the shell are respectively provided with a; the main sealing mechanism comprises a sealing shell, and two first sealing gaskets are arranged inside the sealing shell. The invention can avoid the abrasion caused by the direct contact between the metal plug body and the valve body, can prevent the damage caused by the sealing type, is not easy to leak liquid and does not influence the service life of the plug valve.)

1. The utility model provides a seal structure of plug valve which characterized in that: comprises a cock mechanism (1), a main sealing mechanism (2), an auxiliary sealing mechanism (5) and a third sealing gasket (7);

the faucet mechanism (1) comprises a shell (11), wherein sealing gaskets III (7) are arranged on the left side and the right side of the inside of the shell (11), an inlet and an outlet of the shell (11) are respectively positioned in the middle of the two sealing gaskets III (7), a faucet (12) is sleeved inside the shell (11), a positioning mechanism (4) is arranged between the bottom side of the faucet (12) and the bottom side of the inside of the shell (11), the upper surface of the faucet (12) is connected with a pressing plate (14) through a fixing wire, a valve rod (13) is arranged on the upper surface of the faucet (12), the valve rod (13) penetrates through the upper surface of the pressing plate (14), and connecting mechanisms (3) are arranged on the inlet and the outlet of the shell (11);

the main sealing mechanism (2) comprises a sealing shell (21), two first sealing gaskets (22) are arranged inside the sealing shell (21), and a spring (23) is arranged between the two first sealing gaskets (22);

the auxiliary sealing mechanism (5) comprises two placing grooves (51), and a second sealing gasket (52) is sleeved in the two placing grooves (51);

the sealing shell (21) is installed on the upper surface of the shell (11) through an installation wire, the first sealing gasket (22) and the spring (23) are sleeved on the side surface of the valve rod (13), and the two placing grooves (51) are respectively formed in the side, close to each other, of the shell (11) and the pressing plate (14).

2. A sealing structure of a plug valve according to claim 1, wherein: coupling mechanism (3) are including connecting pipe (31), ring flange (32) and connecting wire (33), connecting pipe (31) set up on the exit of casing (11), ring flange (32) set up two the one end of keeping away from each other of connecting pipe (31), four connecting wire (33) array distribution sets up on ring flange (32).

3. A sealing structure of a plug valve according to claim 1, wherein: the positioning mechanism (4) comprises a positioning block (41) and a positioning groove (42), the positioning block (41) is arranged on the bottom side of the faucet (12), the positioning groove (42) is arranged on the bottom side of the interior of the shell (11), and the positioning groove (42) is correspondingly sleeved with the positioning block (41).

4. A sealing structure of a plug valve according to claim 1, wherein: the top of valve rod (13) is equipped with turning block (6), turning block (6) are the quadrangular type.

5. A sealing structure of a plug valve according to claim 1, wherein: the anti-skid rubber pad shell is characterized by further comprising a supporting mechanism (8), wherein the supporting mechanism (8) comprises supporting columns (81) and anti-skid rubber pads (82), the four supporting columns (81) are arranged on the bottom side of the shell (11), and the anti-skid rubber pads (82) are arranged at the bottom ends of the four supporting columns (81) respectively.

Technical Field

The invention relates to the technical field of plug valves, in particular to a sealing structure of a plug valve.

Background

The plug valve is a fast-switching straight-through valve, which can be used for medium with suspended particles because the movement between rotary sealing surfaces has a wiping action and can completely prevent the contact with flowing medium when the valve is fully opened.

The existing common plug valve is sealed by means of direct contact between a metal plug body and a valve body which are subjected to finish machining, but the direct contact between the metal plug body and the valve body causes abrasion, the sealing type is easy to damage, liquid leakage is easy to occur, and the service life of the plug valve is influenced.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the existing defects, and provide a sealing structure of a plug valve, which can avoid abrasion caused by direct contact between a metal plug body and a valve body, can prevent damage caused by sealing, is not easy to cause liquid leakage, does not influence the service life of the plug valve, and can effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a sealing structure of a plug valve comprises a plug valve mechanism, a main sealing mechanism, an auxiliary sealing mechanism and a sealing gasket III;

a cock mechanism: the sealing device comprises a shell, wherein the left side and the right side of the inside of the shell are respectively provided with a third sealing gasket, an inlet and an outlet of the shell are respectively positioned in the middle parts of the third sealing gaskets, a cock is sleeved inside the shell, a positioning mechanism is arranged between the bottom side of the cock and the bottom side of the inside of the shell, the upper surface of the cock is connected with a pressing plate through a fixing wire, the upper surface of the cock is provided with a valve rod, the valve rod penetrates through the upper surface of the pressing plate, and the inlet and the outlet of the shell are respectively provided;

the main sealing mechanism: the sealing device comprises a sealing shell, wherein two first sealing gaskets are arranged inside the sealing shell, and a spring is arranged between the two first sealing gaskets;

the auxiliary sealing mechanism: the two placing grooves are internally sleeved with a second sealing gasket;

the sealing shell is installed on the upper surface of the shell through an installation wire, the first sealing gaskets and the springs are sleeved on the side faces of the valve rod, and the two placing grooves are respectively formed in one side, close to each other, of the shell and the pressing plate.

Further, coupling mechanism includes connecting pipe, ring flange and connecting wire, all be equipped with the connecting pipe on the exit of casing, the one end that two connecting pipes kept away from each other is equipped with the ring flange, array distribution has four connecting wires on the ring flange, can connect external pipeline.

Furthermore, the positioning mechanism comprises a positioning block and a positioning groove, the positioning block is arranged on the bottom side of the faucet, the positioning groove is arranged on the bottom side of the interior of the shell and is correspondingly sleeved with the positioning block, and the positioning groove and the positioning block can position the faucet and the shell, so that the faucet and the shell are convenient to use.

Further, the top of valve rod is equipped with the turning block, the turning block is the four arriss types, can carry out the joint to the turning block, is convenient for drive the valve rod and rotates.

Further, still include supporting mechanism, supporting mechanism includes support column and anti-skidding rubber pad, the bottom side of casing is equipped with four support columns, and the bottom of four support columns all is equipped with anti-skidding rubber pad, can support this plug valve, is convenient for put and sells.

Compared with the prior art, the invention has the beneficial effects that:

1. the valve rod rotates to drive the cock to rotate, so that the cock and the shell play a role of a valve, the third sealing gasket can isolate the cock and the shell, abrasion caused by direct contact between the metal cock and the shell is avoided, and damage caused by sealing can be prevented;

2. the spring pushes the first sealing gasket to be propped against the top side in the sealing shell and the upper surface of the pressing plate by the elasticity of the spring, so that the valve rod is sealed, liquid leakage is not easy to occur, and the service life of the plug valve is not influenced;

3. the two placing grooves and the second sealing gasket can seal the space between the shell and the pressing plate, and the use is convenient.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is an enlarged view of the structure at the position A of the present invention.

In the figure: the device comprises a faucet mechanism 1, a shell 11, a faucet 12, a valve rod 13, a pressure plate 14, a main sealing mechanism 2, a sealing shell 21, a first sealing gasket 22, a spring 23, a connecting mechanism 3, a connecting pipe 31, a flange 32, a connecting wire 33, a positioning mechanism 4, a positioning block 41, a positioning groove 42, a secondary sealing mechanism 5, a placing groove 51, a second sealing gasket 52, a rotating block 6, a third sealing gasket 7, a supporting mechanism 8, a supporting column 81 and an anti-skid rubber gasket 82.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, the sealing structure of the plug valve provided by the present invention includes a plug mechanism 1, a main sealing mechanism 2, an auxiliary sealing mechanism 5 and a third sealing pad 7.

The plug mechanism 1 comprises a shell 11, the left side and the right side of the inside of the shell 11 are respectively provided with a sealing gasket III 7, an inlet and an outlet of the shell 11 are respectively positioned in the middle of the two sealing gaskets III 7, a plug 12 is sleeved inside the shell 11, a positioning mechanism 4 is arranged between the bottom side of the plug 12 and the bottom side of the inside of the shell 11, the upper surface of the plug 12 is connected with a pressing plate 14 through a fixing wire, the upper surface of the plug 12 is provided with a valve rod 13, the valve rod 13 penetrates through the upper surface of the pressing plate 14, the inlet and the outlet of the shell 11 are respectively provided with a connecting mechanism 3, the plug 12 is driven by the rotation of the valve rod 13, so that the plug 12 and the shell 11 can play a valve role, the sealing gaskets III 7 can isolate the plug 12 from the shell 11, the; coupling mechanism 3 includes connecting pipe 31, ring flange 32 and connecting wire 33, all be equipped with connecting pipe 31 on the exit of casing 11, the one end that two connecting pipes 31 kept away from each other is equipped with ring flange 32, array distribution has four connecting wire 33 on the ring flange 32, can connect external pipeline, positioning mechanism 4 includes locating piece 41 and constant head tank 42, the bottom side of cock 12 is equipped with locating piece 41, the inside bottom side of casing 11 is equipped with constant head tank 42, constant head tank 42 corresponds with locating piece 41 and cup joints, constant head tank 42 can fix a position cock 12 and casing 11 with locating piece 41, convenient to use, the top of valve rod 13 is equipped with turning block 6, turning block 6 is four arriss type, can carry out the joint to turning block 6, be convenient for drive valve rod 13 and rotate.

The main sealing mechanism 2 comprises a sealing shell 21, two sealing gaskets 22 are arranged inside the sealing shell 21, a spring 23 is arranged between the two sealing gaskets 22, the two sealing gaskets 22 are pushed by the elasticity of the spring 23, the top sides of the inside of the sealing shell 21 and the upper surface of the pressing plate 14 are pushed, the valve rod 13 is further sealed, liquid leakage is not easy to occur, and the service life of the plug valve is not influenced.

The secondary sealing mechanism 5 comprises two placing grooves 51, a second sealing gasket 52 is sleeved inside the two placing grooves 51, and the two placing grooves 51 and the second sealing gasket 52 can seal between the shell 11 and the pressing plate 14, so that the use is convenient.

The sealing shell 21 is mounted on the upper surface of the shell 11 through a mounting wire, the two first sealing gaskets 22 and the spring 23 are sleeved on the side surface of the valve rod 13, and the two placing grooves 51 are respectively formed in the side surfaces, close to each other, of the shell 11 and the pressure plate 14.

Still include supporting mechanism 8, supporting mechanism 8 includes support column 81 and anti-skidding rubber pad 82, and the bottom side of casing 11 is equipped with four support columns 81, and the bottom of four support columns 81 all is equipped with anti-skidding rubber pad 82, can support this plug valve, is convenient for put.

When the invention is used: the valve rod 13 rotates to drive the cock 12 to rotate, so that the cock 12 and the shell 11 play a role of a valve, the sealing gasket III 7 can isolate the cock 12 from the shell 11, the direct contact between the metal cock 12 and the shell 11 is prevented from being worn, the sealing type can be prevented from being damaged, the two sealing gaskets I22 are pushed to abut against the top side in the sealing shell 21 and the upper surface of the pressing plate 14 by the elasticity of the spring 23, the valve rod 13 is further sealed, liquid leakage is not easy to occur, and the service life of the cock valve is not influenced; the two placing grooves 51 and the second sealing gaskets 52 can seal between the shell 11 and the pressure plate 14, and are convenient to use.

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.