阅读说明：本技术 一种旋塞阀 (Plug valve ) 是由 陈如岩 张月青 王令勇 于 2021-09-03 设计创作，主要内容包括：本发明公开了一种旋塞阀,包括阀体,所述阀体内设有下端开口的阀腔,所述阀体内设有左右贯穿且与阀腔连通的通道,所述阀体内在阀腔的上端转动连接有阀杆,所述阀杆的下端设有转动连接在阀腔内的阀芯块,所述阀芯块内设于连通孔,所述阀芯块的外侧在连通孔的两侧对称设有插接槽,所述阀腔内在两个插接槽内插接有阀瓣；所述阀体在阀腔的下端开口处固定设有第一堵板,所述第一堵板上铰接有第二堵板,所述第一堵板和第二堵板的铰接轴上设有扭簧；所述阀体内设有与第二堵板配合的定位组件；所述旋塞阀还包括阀瓣更换组件,在更换阀瓣时,将旋塞阀打开且将阀瓣更换组件安装在阀腔的下端开口处；该旋塞阀不仅结构简单,而且能够实现在线维修。(The invention discloses a plug valve, which comprises a valve body, wherein a valve cavity with an opening at the lower end is arranged in the valve body, a channel which penetrates through the valve cavity from left to right and is communicated with the valve cavity is arranged in the valve body, a valve rod is rotatably connected at the upper end of the valve cavity in the valve body, a valve core block which is rotatably connected in the valve cavity is arranged at the lower end of the valve rod, a communicating hole is arranged in the valve core block, insertion grooves are symmetrically arranged at the two sides of the communicating hole at the outer side of the valve core block, and a valve clack is inserted in the two insertion grooves in the valve cavity; a first blocking plate is fixedly arranged at the opening of the lower end of the valve cavity of the valve body, a second blocking plate is hinged to the first blocking plate, and a torsional spring is arranged on a hinged shaft of the first blocking plate and the second blocking plate; a positioning assembly matched with the second blocking plate is arranged in the valve body; the plug valve further comprises a valve clack replacing component, when the valve clack is replaced, the plug valve is opened, and the valve clack replacing component is installed at an opening at the lower end of the valve cavity; the plug valve is simple in structure and can be maintained on line.)

1. The plug valve is characterized by comprising a valve body, wherein a valve cavity with an opening at the lower end is arranged in the valve body, a channel which penetrates through the valve cavity from left to right and is communicated with the valve cavity is arranged in the valve body, a valve rod is rotatably connected to the upper end of the valve cavity in the valve body, a valve core block which is rotatably connected in the valve cavity is arranged at the lower end of the valve rod, a communicating hole is formed in the valve core block, inserting grooves are symmetrically formed in the outer side of the valve core block at two sides of the communicating hole, a valve clack is inserted in the two inserting grooves in the valve cavity, when the plug valve is opened, the communicating hole and the channel are in the coaxial position, and when the plug valve is opened, the communicating hole and the channel are in the vertical position and the valve clack is blocked on the channel; a first blocking plate is fixedly arranged at an opening at the lower end of the valve cavity of the valve body, a second blocking plate is hinged to the first blocking plate, and a torsional spring for forcing the second blocking plate to turn downwards is arranged on a hinged shaft of the first blocking plate and the second blocking plate; a positioning assembly matched with the second plug plate is arranged in the valve body, and the positioning assembly is used for positioning the second plug plate at a position which is in the same plane with the first plug plate; when the plug valve is opened, the two valve clacks are respectively positioned right above the first blocking plate and the second blocking plate; the plug valve further comprises a valve clack replacing component, and when the valve clack is replaced, the plug valve is opened, and the valve clack replacing component is installed at the lower end opening of the valve cavity.

2. The plug valve according to claim 1, wherein the positioning assembly comprises a positioning rotating block, a radial slot hole is formed in the side wall of the lower end of the valve cavity, the positioning rotating block is arranged in the radial slot hole, a positioning groove is formed in the outer side of the valve body opposite to the radial slot hole, a shaft rod extending into the positioning groove is arranged at the end part of the positioning rotating block, and a positioning convex block is arranged at the end part of the shaft rod extending out of the positioning groove; a positioning spring used for forcing the positioning rotating block to extend into the valve cavity is arranged in the radial slotted hole; when the positioning rotating block extends into the valve cavity, the positioning convex block enters the positioning groove, and when the positioning rotating block leaves the valve cavity and retracts into the radial slotted hole, the positioning convex block transversely extends to the outer side of the positioning groove.

3. The plug valve of claim 1, wherein the valve flap replacement assembly comprises a mounting cylinder having an opening at an upper end thereof, wherein the upper end of the mounting cylinder is mounted at the opening at the lower end of the valve chamber by a pin when the valve flap is replaced; the center of the bottom end of the mounting cylinder is rotatably connected with a rotating wheel positioned in the mounting cylinder, and four placing grooves for containing the valve clacks are uniformly arranged on the outer side of the rotating wheel at intervals along the circumferential direction; a convex rod is arranged in the rotating wheel, a rotating rod connected with the rotating wheel is arranged at the upper end of the convex rod, and the rotating rod and the rotating wheel are fixedly connected along the circumferential direction and are in sliding connection along the axial direction of the rotating rod; the bottom eccentric position department of an installation section of thick bamboo is equipped with the push rod along vertical direction, the upper end of push rod is equipped with the fixture block, the bottom of an installation section of thick bamboo is equipped with the groove of dodging that supplies the fixture block to stretch into, and the bottom of every valve clack all is equipped with and supplies the fixture block to stretch into the draw-in groove, and when the fixture block stretched into in the draw-in groove and rotated 90, fixture block and valve clack lock.

4. The plug valve according to claim 3, wherein a rotary groove for the rotary rod to extend into is arranged in the rotary wheel, a limit sliding groove is axially arranged on the inner side wall of the rotary groove, and a limit bump which is slidably connected in the limit sliding groove is fixedly arranged on the outer side of the rotary rod.

5. The plug valve of claim 3, wherein the lower end of the valve cavity is disposed in the inner step groove, and the upper end of the mounting barrel is provided with a shoulder extending into the step groove.

6. The plug valve of claim 5, wherein the lower end of the valve body is provided with a plug hole communicating with the stepped groove, the outer side of the shoulder is provided with a slot, and when the mounting cylinder is mounted on the lower end of the valve body, the plug hole and the slot are in a coaxial position and the pin passes through the plug hole and extends into the slot.

7. The plug valve of claim 1, wherein a handle lever is fixedly disposed at an upper end of the valve stem.

Technical Field

The invention relates to the field of pipeline valves, in particular to a plug valve.

Background

The plug valve is a rotary valve in a closing part or a plunger shape, and the opening or the closing of the valve is realized by rotating 90 degrees to enable a passage port on the plug to be communicated with or separated from a passage port on the valve body. It is a valve using a plug body with a through hole as an opening and closing piece. The plug body rotates along with the valve rod to realize opening and closing actions. The following problems often occur when the existing plug valve is used:

1. due to the structural characteristics of the plug valve, a valve core and a valve seat of the plug valve need to be tightly matched, so that the valve core is easy to wear when the plug valve is opened and closed, the plug valve is leaked, and the service life of the plug valve is influenced;

2. when the plug valve is maintained, the plug valve needs to be detached from a pipeline and then maintained, and the whole process is large in engineering quantity and affects the work of the whole system; and the medium in the pipeline can flow out in a large quantity to pollute the working environment.

Disclosure of Invention

The invention aims to provide a plug valve which is simple in structure and can be maintained on line.

In order to achieve the purpose, the invention provides the following technical scheme: a plug valve comprises a valve body, wherein a valve cavity with an opening at the lower end is arranged in the valve body, a channel which penetrates left and right and is communicated with the valve cavity is arranged in the valve body, a valve rod is rotatably connected to the upper end of the valve cavity in the valve body, a valve core block which is rotatably connected in the valve cavity is arranged at the lower end of the valve rod, a communicating hole is formed in the valve core block, inserting grooves are symmetrically formed in the outer side of the valve core block at two sides of the communicating hole, a valve clack is inserted in the two inserting grooves in the valve cavity, when the plug valve is opened, the communicating hole and the channel are in the coaxial position, and when the plug valve is opened, the communicating hole and the channel are in the vertical position and the valve clack is blocked on the channel; a first blocking plate is fixedly arranged at an opening at the lower end of the valve cavity of the valve body, a second blocking plate is hinged to the first blocking plate, and a torsional spring for forcing the second blocking plate to turn downwards is arranged on a hinged shaft of the first blocking plate and the second blocking plate; a positioning assembly matched with the second plug plate is arranged in the valve body, and the positioning assembly is used for positioning the second plug plate at a position which is in the same plane with the first plug plate; when the plug valve is opened, the two valve clacks are respectively positioned right above the first blocking plate and the second blocking plate; the plug valve further comprises a valve clack replacing component, and when the valve clack is replaced, the plug valve is opened, and the valve clack replacing component is installed at the lower end opening of the valve cavity.

Furthermore, the positioning assembly comprises a positioning rotating block, a radial slot hole is formed in the side wall of the lower end of the valve cavity, the positioning rotating block is arranged in the radial slot hole, a positioning groove is formed in the outer side of the valve body opposite to the radial slot hole, a shaft rod extending into the positioning groove is arranged at the end part of the positioning rotating block, and a positioning convex block is arranged at the end part of the shaft rod extending out of the positioning groove; a positioning spring used for forcing the positioning rotating block to extend into the valve cavity is arranged in the radial slotted hole; when the positioning rotating block extends into the valve cavity, the positioning convex block enters the positioning groove, and when the positioning rotating block leaves the valve cavity and retracts into the radial slotted hole, the positioning convex block transversely extends to the outer side of the positioning groove.

Furthermore, the valve clack replacing assembly comprises an installation cylinder with an opening at the upper end, and when the valve clack is replaced, the upper end of the installation cylinder is installed at the opening at the lower end of the valve cavity through a pin; the center of the bottom end of the mounting cylinder is rotatably connected with a rotating wheel positioned in the mounting cylinder, and four placing grooves for containing the valve clacks are uniformly arranged on the outer side of the rotating wheel at intervals along the circumferential direction; a convex rod is arranged in the rotating wheel, a rotating rod connected with the rotating wheel is arranged at the upper end of the convex rod, and the rotating rod and the rotating wheel are fixedly connected along the circumferential direction and are in sliding connection along the axial direction of the rotating rod; the bottom eccentric position department of an installation section of thick bamboo is equipped with the push rod along vertical direction, the upper end of push rod is equipped with the fixture block, the bottom of an installation section of thick bamboo is equipped with the groove of dodging that supplies the fixture block to stretch into, and the bottom of every valve clack all is equipped with and supplies the fixture block to stretch into the draw-in groove, and when the fixture block stretched into in the draw-in groove and rotated 90, fixture block and valve clack lock.

Furthermore, a rotating groove for the rotating rod to extend into is formed in the rotating wheel, a limiting sliding groove is formed in the inner side wall of the rotating groove in the axial direction, and a limiting convex block which is connected into the limiting sliding groove in a sliding mode is fixedly arranged on the outer side of the rotating rod.

Furthermore, the lower end of the valve cavity is arranged in the inner step groove, and the upper end of the mounting cylinder is provided with a convex shoulder extending into the step groove.

Further, the lower extreme of valve body is equipped with the jack with step groove intercommunication, the outside of convex shoulder is equipped with the slot, and when the lower extreme at the valve body was installed to the installation section of thick bamboo, the jack was in coaxial position with the slot and the pin passed the jack and stretched into in the slot.

Furthermore, a handle rod is fixedly arranged at the upper end of the valve rod.

Advantageous effects

Compared with the prior art, the technical scheme of the invention has the following advantages:

1. the valve clack is detachably connected with the valve core block, and the valve clack is replaced after the sealing part of the valve clack is abraded, so that the valve core block is not required to be integrally detached, the disassembly is flexible, the workload is less, and the valve core block is convenient to replace, so that the service life of the plug valve is prolonged;

2. according to the invention, the first blocking plate and the second blocking plate which are hinged with each other are used, so that the valve clack can be replaced conveniently and quickly by only opening the second blocking plate when the valve clack is disassembled;

3. according to the invention, by using the mounting cylinder provided with the spare valve clack, when the valve clack needs to be replaced, the mounting cylinder is butted with the bottom of the plug valve, the second blocking plate is opened, the worn valve clack is pulled out by the push rod in the mounting cylinder, then a new valve clack is pushed in, and finally the second blocking plate is rotated to the position coplanar with the first blocking plate by the upward movement of the rotating rod, so that the online maintenance of the plug valve can be realized, the plug valve does not need to be detached, and the operation is simple.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention;

FIG. 3 is a cross-sectional view of the valve core component of the present invention as it is being replaced;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3 in accordance with the present invention;

FIG. 5 is a diagram illustrating an outline of a cartridge according to the present invention;

FIGS. 6-7 are external views of the valve flap of the present invention;

fig. 8 is an external view of the valve core block of the present invention.

Detailed Description

Referring to fig. 1-8, a plug valve includes a valve body 1, a valve cavity 101 with an open lower end is arranged in the valve body 1, a passage 102 penetrating through the valve cavity 101 from left to right and communicating with the valve cavity 101 is arranged in the valve body 1, a valve rod 21 is rotatably connected to the upper end of the valve cavity 101 in the valve body 1, a handle rod 3 is fixedly arranged at the upper end of the valve rod 21, a valve core block 2 rotatably connected in the valve cavity 101 is arranged at the lower end of the valve rod 21, the valve core block 2 is arranged in a communicating hole 22, inserting grooves 23 are symmetrically arranged at the outer side of the valve core block 2 on two sides of the communicating hole 22, a valve clack 8a is inserted in the two inserting grooves 23 in the valve cavity 101, when the plug valve is opened, the communicating hole 22 and the passage 102 are in a coaxial position, and when the plug valve is opened, the communicating hole 22 and the passage 102 are in a vertical position and the valve clack 8a is blocked on the passage 102; a first blocking plate 6b is fixedly arranged at an opening at the lower end of the valve cavity 101 of the valve body 1, a second blocking plate 6a is hinged on the first blocking plate 6b, and a torsional spring 7 for forcing the second blocking plate 6a to turn downwards is arranged on a hinged shaft 6 of the first blocking plate 6b and the second blocking plate 6 a; a positioning assembly matched with the second blocking plate 6a is arranged in the valve body 1, and the positioning assembly is used for positioning the second blocking plate 6a at the position which is in the same plane with the first blocking plate 6 b; when the plug valve is opened, the two valve clacks 8a are respectively positioned right above the first blocking plate 6b and the second blocking plate 6 a; the plug valve further comprises a valve clack replacing component, and when the valve clack 8a is replaced, the plug valve is opened, and the valve clack replacing component is installed at the lower end opening of the valve cavity 101.

The positioning assembly comprises a positioning rotating block 4, a radial slotted hole 1a is formed in the side wall of the lower end of the valve cavity 101, the positioning rotating block 4 is arranged in the radial slotted hole 1a, a positioning groove 1b is formed in the position, opposite to the radial slotted hole 1a, of the outer side of the valve body 1, a shaft rod 4b extending into the positioning groove 1b is arranged at the end part of the positioning rotating block 4, and a positioning convex block 4a is arranged at the end part of the shaft rod 4b extending out of the positioning groove 1 b; a positioning spring 5 for forcing the positioning rotating block 4 to extend into the valve cavity 101 is arranged in the radial groove hole 1 a; when the positioning rotating block 4 extends into the valve cavity 101, the positioning projection 4a enters the positioning groove 1b, and when the positioning rotating block 4 leaves the valve cavity 101 and retracts into the radial slotted hole 1a, the positioning projection 4a is transversely arranged outside the positioning groove 1 b.

The valve clack replacing component comprises a mounting cylinder 9 with an opening at the upper end, and when the valve clack 8a is replaced, the upper end of the mounting cylinder 9 is mounted at the opening at the lower end of the valve cavity 101 through a pin; the bottom end center of the mounting cylinder 9 is rotatably connected with a rotating wheel 10 positioned in the mounting cylinder 9, and four placing grooves 10a for containing the valve clacks 8a are uniformly arranged on the outer side of the rotating wheel 10 at intervals along the circumferential direction; a convex rod 12 is arranged in the rotating wheel 10, a rotating rod 12a connected with the rotating wheel 10 is arranged at the upper end of the convex rod 12, and the rotating rod 12a is fixedly connected with the rotating wheel 10 along the circumferential direction and is in sliding connection along the axial direction of the rotating rod 12 a; the bottom eccentric position department of installation section of thick bamboo 9 is equipped with push rod 11 along vertical direction, the upper end of push rod 11 is equipped with fixture block 11a, the bottom of installation section of thick bamboo 9 is equipped with the groove 91 of dodging that supplies fixture block 11a to stretch into, and the bottom of every valve clack 8a all is equipped with and supplies fixture block 11a to stretch into draw-in groove 8a1, and in fixture block 11a stretched into draw-in groove 8a1 and when rotating 90, fixture block 11a and valve clack 8a lock. A rotating groove 10b for a rotating rod 12a to extend into is arranged in the rotating wheel 10, a limiting sliding groove 10c is axially arranged on the inner side wall of the rotating groove 10b, and a limiting convex block 12c which is connected in the limiting sliding groove 10c in a sliding mode is fixedly arranged on the outer side of the rotating rod 12 a.

The lower end of the valve cavity 101 is arranged in the inner step groove 1e, and the upper end of the mounting cylinder 9 is provided with a shoulder 92 extending into the step groove 1 e. The lower end of the valve body 1 is provided with a jack 1c communicated with the step groove 1e, the outer side of the shoulder 92 is provided with a slot 9a, when the mounting cylinder 9 is mounted at the lower end of the valve body 1, the jack 1c and the slot 9a are in a coaxial position, and the pin 13 penetrates through the jack 1c and extends into the slot 9 a.

As shown in fig. 1, when the plug valve is in the open state, the valve core block 2 is driven to rotate by rotating the handle rod 3, and the valve core block 2 drives the valve clack 8a matched with the valve core block 2 to rotate together, so that the plug valve is opened and closed.

When the plug valve is used for a long time and the valve flap 8a is worn and needs to be replaced, firstly, the plug valve core block 2 is rotated to an opening position, the mounting cylinder 9 is butted with the bottom of the valve body 1 through the pin 13, the positioning rotating block 4 is pulled outwards by overcoming the positioning spring 5, the positioning rotating block 4 is rotated, the positioning protruding block 4a is enabled to be transversely arranged on the outer side of the positioning groove 1b, the positioning rotating block 4 is prevented from extending into the valve cavity 101, the second blocking plate 6a is rotated and opened under the driving of the torsion spring 7, as shown in figure 3, the push rod 11 is pushed upwards, the clamping block 11a is enabled to enter the clamping groove 8a1 and the push rod 11 is rotated, the clamping block 11a is enabled to be buckled with the clamping groove 8a1, the clamping block 11a can pull out the valve flap 8a to enable the valve flap 8a to enter the placing groove 10a of the rotating wheel 10, when the valve flap 8a is contacted with the bottom of the mounting cylinder 9, the clamping block 11a is enabled to be enabled to enable the clamping block 11a to be separated from the clamping groove 8a1 by rotating rod 12, the convex rod 12 is rotated anticlockwise, the convex rod 12a drives the rotating wheel 10 to rotate 90 degrees, the next placing groove 10a is aligned with the opening position of the second blocking plate 6a, the handle rod 3 rotates 180 degrees, the other valve clack 8a rotates to the position above the second blocking plate 6a, the valve clack 8a is taken out again through the push rod 11 and is pulled into the mounting cylinder 9, the convex rod 12 rotates again, the convex rod 12 drives the rotating wheel 10 to rotate 90 degrees through the rotating rod 12a, a new valve clack 8a is driven to come under the second blocking plate 6a, the push rod 11 is adjusted to prevent the clamping block 11a from entering the clamping groove 8a1, the push rod 11 is pushed upwards to push the valve clack 8a into the valve cavity 101 and enter the insertion groove 23, the valve clack is matched with the valve core block 2, the push rod 11 is retracted, the handle rod 3 is rotated to drive the valve core block 2 to rotate 180 degrees, the convex rod 12 is rotated to drive the rotating wheel 10 to rotate 90 degrees, the new valve clack 8a is driven to come under the second blocking plate 6a, the new valve clack 8a is pushed into the valve body 1 and enters the insertion groove 23 through the push rod 11, the plug valve is matched with the valve core block 2, the push rod 11 is pulled back, the convex rod 12 is pushed upwards, the second blocking plate 6a is pushed to rotate by overcoming the torsion spring 7, when the second blocking plate 6a rotates to be in the same plane with the first blocking plate 6b, the positioning rotating block 4 is rotated to enable the positioning convex block 4a to enter the positioning groove 1b, the positioning rotating block 4 is pushed out by the positioning spring 5 to position the second blocking plate 6a, the pin 13 is removed, the mounting cylinder 9 is separated from the valve body 1, the valve clack is replaced, online maintenance is achieved, the plug valve does not need to be detached, and use delay is avoided.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.