CN217559067U

CN217559067U - Plug valve

Info

Publication number: CN217559067U
Application number: CN202221582985.XU
Authority: CN
Inventors: 项启源; 胡宝
Original assignee: Zhejiang Zhanxude Automation Control Valve Co ltd
Current assignee: Zhejiang Zhanxude Automation Control Valve Co ltd
Priority date: 2022-06-20
Filing date: 2022-06-20
Publication date: 2022-10-11
Anticipated expiration: 2032-06-20

Abstract

The utility model discloses a plug valve, including valve body and disk seat, the top rigid coupling of valve body has the disk seat, the valve gap is installed to the top of disk seat, and the valve gap links to each other with the disk seat screw thread through a plurality of bolts, the internally mounted of disk seat has sealing device, blocking device is installed to the below of valve gap. Can be connected first valve rod and disk seat through first sealed bearing, later install sealing washer and adjusting block in proper order at the outer wall of first valve rod, rethread second dog etc. is fixed with the adjusting block, can seal the junction of first valve rod and disk seat through the sealing washer like this, can carry on spacingly to the sealing washer through the adjusting block, prevents that the sealing washer from removing to alright leakproofness in improvement first valve rod and disk seat junction.

Description

Plug valve

Technical Field

The utility model relates to a plug valve technical field specifically is a plug valve.

Background

A plug valve is a rotary valve in the shape of a closure member or plug, and is opened or closed by rotating 90 degrees so that a passage opening of a plug is the same as or separate from a passage opening of a valve body.

For example, the patent is CN 212928824U's a plug valve case subassembly and plug valve, the utility model discloses a plug valve of plug valve case subassembly plug valve, including plug valve body. The utility model provides a current plug valve case valve rod dismantle inconvenient, the valve rod uses for a long time and can appear damaging needs to maintain the change, dismantlement that can not be convenient can lead to the user to need consume the problem that more time dismantled the valve rod.

Although the plug valve can be used, the joint of the valve rod and the valve body of the plug valve is only sealed through one sealing ring, so that the sealing performance is poor, and the sealing ring can be loosened after the valve rod rotates for many times.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plug valve to solve the plug valve among the above-mentioned that proposes in the above-mentioned background art and can use, but the junction of the valve rod of plug valve and valve body only seals through a sealing washer, and the leakproofness is not good like this, rotates the sealing washer when the valve rod many times and just can produce not hard up problem.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a plug valve, includes valve body and disk seat, the top rigid coupling of valve body has the disk seat, the valve gap is installed to the top of disk seat, and the valve gap links to each other with the disk seat screw thread through a plurality of bolts, the internally mounted of disk seat has sealing device, blocking device is installed to the below of valve gap.

Preferably, including first valve rod, the below outer wall of first valve rod is rotated through the inside of first sealed bearing and disk seat and is linked to each other, and the middle outer wall of first valve rod and the through-hole department inner wall clearance fit of valve gap, the sealing washer is installed to the below outer wall of first valve rod, and the lower surface of sealing washer and the inner wall of disk seat laminate mutually, the adjusting block is installed to the top of sealing washer, and the through-hole department inner wall of adjusting block and the outer wall clearance fit of first valve rod.

Preferably, a handle is connected above the first valve rod through a second bolt in a threaded mode.

Preferably, the blocking device comprises a barrel, a left side and a right side, the upper portion of the barrel is fixedly connected with the valve cover, a first stop block is arranged inside the barrel, the outer wall of the first stop block is in clearance fit with the inner wall of the barrel, a vertical rod is fixedly connected to the lower portion of the first stop block, the middle outer wall of the vertical rod is in clearance fit with the inner wall of the opening of the barrel, a second stop block is fixedly connected to the lower portion of the vertical rod, and the lower surface of the second stop block is attached to the upper surface of the adjusting block.

Preferably, a spring is installed above the interior of the barrel, and the outer walls of the two ends of the spring are fixedly connected with the barrel and the first stop block respectively.

Compared with the prior art, the beneficial effects of the utility model are that: this plug valve can be connected first valve rod and disk seat through first seal bearing, later installs sealing washer and adjusting block in proper order at the outer wall of first valve rod, and rethread second dog etc. are fixed with the adjusting block, can seal the junction of first valve rod and disk seat through the sealing washer like this, can carry on spacingly to the sealing washer through the adjusting block, prevent that the sealing washer from removing to alright in order to improve the leakproofness of first valve rod and disk seat junction.

Drawings

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

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the adjusting block, the sealing ring and the valve seat in FIG. 2;

FIG. 4 is a schematic structural view of the vertical rod, the spring and the second stopper in FIG. 2;

fig. 5 is a schematic view of the plug, second stem and valve body of fig. 2.

In the figure: 1. valve body, 2, valve seat, 3, sealing device, 301, first valve rod, 302, first sealed bearing, 303, sealing washer, 304, adjusting block, 3A1, stopper, 3A2, cutting ferrule, 3A3, second valve rod, 3A4, second sealed bearing, 4, blocking device, 401, barrel, 402, first dog, 403, montant, 404, second dog, 5, bolt, 6, valve gap, 7, second bolt, 8, handle, 9, spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

Example one

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a plug valve, includes valve body 1 and disk seat 2, and the top rigid coupling of valve body 1 has disk seat 2, and valve gap 6 is installed to disk seat 2's top, and valve gap 6 links to each other with 2 screw threads of disk seat through 4 bolts 5, and the centre processing of valve gap 6 has the through-hole, and the internally mounted of disk seat 2 has sealing device 3, and blocking device 4 is installed to the below of valve gap 6.

Referring to fig. 2 and 3, the sealing device 3 includes a first valve rod 301, a first sealing bearing 302, a sealing ring 303 and an adjusting block 304, a lower outer wall of the first valve rod 301 is rotatably connected with the inside of the valve seat 2 through the first sealing bearing 302, a middle outer wall of the first valve rod 301 is in clearance fit with an inner wall of a through hole of the valve cap 6, the first valve rod 301 can be limited through the valve cap 6, the lower outer wall of the first valve rod 301 is provided with the sealing ring 303, and a lower surface of the sealing ring 303 is attached to the inner wall of the valve seat 2, so that the sealing ring 303 is matched with the first sealing bearing 302 to improve the sealing performance of the first valve rod 301, the adjusting block 304 is installed above the sealing ring 303, the sealing ring can be blocked through the adjusting block 304, a through hole is processed in the middle of the adjusting block 304, the inner wall of the through hole of the adjusting block 304 is in clearance fit with the outer wall of the first valve rod 301, and a handle 8 is connected above the first valve rod 301 through a second bolt 7;

can be connected first valve rod 301 with valve seat 2 through first sealed bearing 302, later install sealing washer 303 and adjusting block 304 in proper order at the outer wall of first valve rod 301, rethread second dog 404 etc. is fixed with adjusting block 304, can seal the junction of first valve rod 301 with valve seat 2 through sealing washer 303 like this, can carry on spacingly to sealing washer 303 through adjusting block 304, prevent that sealing washer 303 from removing, thereby alright leakproofness in the junction of improving first valve rod 301 and valve seat 2.

Referring to fig. 2 and 4, the blocking device 4 includes a cylinder 401, a first stopper 402, a vertical rod 403 and a second stopper 404, the upper portions of the left and right cylinders 401 are fixedly connected to the valve cover 6, an opening is formed below the cylinder 401, the first stopper 402 is installed inside the cylinder 401, an outer wall of the first stopper 402 is in clearance fit with an inner wall of the cylinder 401, the vertical rod 403 is fixedly connected below the first stopper 402, the first stopper 402 can drive the vertical rod 403 to move, a middle outer wall of the vertical rod 403 is in clearance fit with an inner wall of the opening of the cylinder 401, the second stopper 404 is fixedly connected below the vertical rod 403, a lower surface of the second stopper 404 is attached to an upper surface of the adjusting block 304, the adjusting block 304 can be blocked by the second stopper 404, a spring 9 is installed above the inside of the cylinder 401, outer walls at two ends of the spring 9 are respectively fixedly connected to the cylinder 401 and the first stopper 402, and the spring 9 can be elastically deformed when the cylinder 401 moves downward;

can install valve gap 6 on first valve rod 301, drive barrel 401 downstream through valve gap 6, make barrel 401 drive second dog 404 through first dog 402 and montant 403 and remove, after the lower surface of second dog 404 and the upper surface laminating of adjusting block 304, barrel 401 cooperates first dog 402 and montant 403 etc. can extrude spring 9, make spring 9 take place elastic deformation, second dog 404 like this through spring 9's elasticity performance alright with supporting adjusting block 304 tightly fixed.

In this embodiment, when an operator needs to use the plug valve, firstly, the operator may connect the first valve rod 301 with the valve seat 2 through the first sealing bearing 302, then sequentially install the sealing ring 303 and the adjusting block 304 on the outer wall of the first valve rod 301, the joint between the first valve rod 301 and the valve seat 2 may be sealed through the sealing ring 303, the adjusting block 304 may limit the sealing ring 303, and prevent the sealing ring 303 from moving, so that the sealing ring 303 may be matched with the adjusting block 304 and the first sealing bearing 302 to improve the sealing performance of the joint between the first valve rod 301 and the valve seat 2, then, the valve cap 6 may be installed on the first valve rod 301, the cylinder 401 may be driven by the valve cap 6 to move downward, so that the cylinder 401 may drive the second stopper 404 to move through the first stopper 402 and the vertical rod 403, after the lower surface of the second stopper 404 is fitted with the upper surface of the adjusting block 304, the cylinder 401 may extrude the spring 9 through the first stopper 402 and the vertical rod 403, so that the spring 9 may be tightly abutted against the adjusting block 304, finally, the valve cap 6 may be fixed with the valve seat 2 through the first bolt 5, and the handle 7, and the plug valve may be installed, and the plug valve 301 may be installed through the second stopper 6.

Example two

Referring to fig. 2 and 5, the present invention provides a technical solution: a plug valve, the sealing means 3 can also include the stopper 3A1, the cutting ferrule 3A2, the second valve stem 3A3 and second sealed bearing 3A4, the outer wall of the stopper 3A1 and inner wall clearance fit of the valve block 1, and the top of the stopper 3A1 is connected with the first valve stem 301 fixedly, can drive the stopper 3A1 to rotate through the first valve stem 301, the cutting ferrule 3A2 is installed to the upper and lower outer walls of the stopper 3A1, can protect the stopper 3A1 through the cutting ferrule 3A2, and the outer wall of the cutting ferrule 3A2 is laminated with the inner wall of the valve block 1, the lower rigid connection of the stopper 3A1 has the second valve stem 3A3, and the outer wall of the second valve stem 3A3 is connected with the valve block 1 to rotate through the second sealed bearing 3A4, can make the stopper 3A1 rotate more steadily through the second valve stem 3A 3;

can make first valve rod 301 drive stopper 3A1 and rotate, stopper 3A1 drives second valve rod 3A3 and rotates to it is more stable when first valve rod 301 cooperation second valve rod 3A3 can make stopper 3A1 rotate.

In this embodiment, when operating personnel need use the plug valve, can make first valve rod 301 drive stopper 3A1 and rotate, stopper 3A1 drives second valve rod 3A3 and rotates, thereby first valve rod 301 cooperation second valve rod 3A3 can make stopper 3A1 more stable when rotating, install cutting ferrule 3A2 at stopper 3A 1's outer wall simultaneously, the PEEK material that this cutting ferrule 3A2 used, compare with conventional PTEE material, its high temperature resistant and wear resistance can be better, consequently, the life cycle will be several times longer than other materials, do not need to change frequently.

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 plug valve, includes valve body (1) and disk seat (2), the top rigid coupling of valve body (1) has disk seat (2), its characterized in that: valve gap (6) are installed to the top of disk seat (2), and valve gap (6) link to each other with disk seat (2) screw thread through a plurality of bolts (5), the internally mounted of disk seat (2) has sealing device (3), stop device (4) are installed to the below of valve gap (6).

2. A plug valve according to claim 1, wherein: sealing device (3) include first valve rod (301), the below outer wall of first valve rod (301) rotates through the inside of first sealed bearing (302) and disk seat (2) and links to each other, and the through-hole department inner wall clearance fit of the middle outer wall of first valve rod (301) and valve gap (6), sealing washer (303) are installed to the below outer wall of first valve rod (301), and the lower surface of sealing washer (303) is laminated with the inner wall of disk seat (2) mutually, adjusting block (304) are installed to the top of sealing washer (303), and the through-hole department inner wall of adjusting block (304) and the outer wall clearance fit of first valve rod (301).

3. A plug valve according to claim 2, wherein: a handle (8) is connected above the first valve rod (301) through a second bolt (7) in a threaded mode.

4. A plug valve according to claim 1, wherein: blocking device (4) are including barrel (401), control the top and valve gap (6) looks rigid coupling of barrel (401), the internally mounted of barrel (401) has first dog (402), and the outer wall of first dog (402) and the inner wall clearance fit of barrel (401), the below rigid coupling of first dog (402) has montant (403), and the opening part inner wall clearance fit of the middle outer wall of montant (403) and barrel (401), the below rigid coupling of montant (403) has second dog (404), and the lower surface of second dog (404) is laminated with the upper surface of adjusting block (304).

5. A plug valve according to claim 4, wherein: a spring (9) is installed above the interior of the cylinder (401), and the outer walls of two ends of the spring (9) are fixedly connected with the cylinder (401) and the first stop block (402) respectively.