CN216768360U

CN216768360U - Low-temperature simple core-pulling valve

Info

Publication number: CN216768360U
Application number: CN202220009326.0U
Authority: CN
Inventors: 盛波
Original assignee: Kaidu Shanghai Fluid Technology Co ltd
Current assignee: Kaidu Shanghai Fluid Technology Co ltd
Priority date: 2022-01-05
Filing date: 2022-01-05
Publication date: 2022-06-17
Anticipated expiration: 2032-01-05

Abstract

The utility model discloses a low-temperature simple core-pulling valve, which comprises a valve body; the valve comprises a valve body, a valve seat, a valve core, a guide body, an elongated pipe, a valve rod, a heat insulation guide plate, a packing box and cold box connecting seats, wherein the valve seat is arranged at the bottom in the valve body, the valve core is arranged in the valve seat, the guide body is arranged at the top of the valve core, the elongated pipe is arranged at the top of the valve body, the valve rod extending to the top of the elongated pipe is arranged at the top of the guide body, the heat insulation guide plate is fixedly arranged on the outer side of the valve rod at the bottom of the elongated pipe, the packing box is arranged at the top of the elongated pipe, and the cold box connecting seats are arranged at the tops of two sides of the elongated pipe; the heat insulation plate is arranged at the bottom of the lengthened pipe, the low-temperature medium is blocked below the heat insulation plate, no low-temperature medium exists in the lengthened pipe and the stuffing box, the valve heat insulation effect is excellent, the stuffing using performance is more reliable, the stuffing box and the lengthened pipe are detachably connected, the inner part is convenient to replace, all parts in the valve, such as the valve core assembly and the like, can be directly disassembled after the stuffing box exposed in the atmospheric environment is disassembled, and the disassembly and maintenance are convenient.

Description

Low-temperature simple core-pulling valve

Technical Field

The utility model relates to the technical field of regulating valves, in particular to a low-temperature simple core-pulling valve.

Background

Because the medium temperature in the cold box is usually very low, the low temperature valve in the cold box needs to be isolated from the atmospheric environment to insulate heat, the low temperature valve in the cold box is installed behind the pipeline, a lot of pearlife used for insulating heat is filled in the cold box outside the low temperature valve, in case the low temperature valve has a fault in the cold box, the maintenance valve needs to climb up the air separation column, the pearlife is pulled off, later, the maintenance and the replacement of valve internals can be implemented, the maintenance is very inconvenient, the sucked pearlife is harmful to the human body to make the operation unsafe, the cycle of cold box sand-pulling maintenance is long, the cost is high, and the maintenance cost of the low temperature valve in the cold box is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a low-temperature simple core-pulling valve to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the low-temperature simple core-pulling valve comprises a valve body; the valve comprises a valve body, a valve seat, a valve core, a guide body, an elongated pipe, a valve rod, a heat insulation guide plate, a packing box, cold box connecting seats, cold box connecting pieces and bolt mounting seats, wherein the valve seat is arranged at the bottom in the valve body, the valve core is arranged in the valve seat, the guide body is arranged at the top of the valve core, the elongated pipe is arranged at the top of the valve body, the valve rod extending to the top of the elongated pipe is arranged at the top of the guide body, the heat insulation guide plate is fixedly arranged on the outer side of the valve rod at the bottom of the elongated pipe, the packing box is arranged at the top of the elongated pipe, the cold box connecting seats are arranged at the tops of two sides of the elongated pipe, the cold box connecting pieces are arranged on the outer sides of the cold box connecting seats, and the bolt mounting seats are arranged on the cold box connecting pieces;

the packing box is through last flange fixed mounting at the top of extension pipe, and goes up the flange and install at the top of extension pipe through last flange bolt, the internally mounted of packing box has the packing box sleeve, and the packing box sleeve suit is at the surface of valve rod, be equipped with on the inside packing box sleeve of packing box and establish the filler at the valve rod surface.

Preferably, the bottom of the valve body is provided with a lower liquid discharge hole, one side of the valve body is provided with a side liquid discharge pipe, and the port of the side liquid discharge pipe is provided with a side liquid discharge hole.

Preferably, the bottom of the valve core is provided with a valve plug, and the valve plug is tightly attached to the valve seat when closed.

Preferably, the surface of the guide body is uniformly distributed with liquid guide holes, the guide body is fixedly connected with the valve rod through a locking nut at the top part, the valve rod is fixedly connected with the locking nut through an installation rod, and a valve rod ejector rod is arranged at the top of the valve rod.

Preferably, the extension pipe is fixedly connected with the valve body through a middle flange, and the middle flange is mounted at the top of the valve body through a middle flange bolt.

Preferably, the inner ring of the joint of the heat insulation guide plate and the valve rod is sleeved with a sealing ring, and the outer ring of the heat insulation guide plate is tightly attached to the middle flange.

Preferably, one side of the stuffing box sleeve is provided with a mounting foot, and the mounting foot is provided with a fixing bolt fixedly connected with the stuffing box.

Compared with the prior art, the utility model has the beneficial effects that:

1. the heat insulation plate is arranged at the bottom of the lengthened pipe, the low-temperature medium is blocked below the heat insulation plate, no low-temperature medium exists in the lengthened pipe and the stuffing box, the valve heat insulation effect is excellent, the stuffing using performance is more reliable, the stuffing box is detachably connected with the lengthened pipe, the internal part is convenient to replace, all parts in the valve, such as the valve core assembly and the like, can be directly disassembled after the stuffing box exposed in the atmospheric environment is disassembled, and the disassembly and maintenance are convenient.

2. The valve has simple structure, less valve internals, low manufacturing cost and triple guiding functions: the guide body is used for guiding once, the heat insulation guide plate is used for guiding twice, the stuffing box accessory is used for guiding three times, and the valve is stable and reliable in action.

Drawings

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

FIG. 2 is a schematic external surface view of the present invention;

FIG. 3 is an enlarged view of detail A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of detail B of FIG. 1 according to the present invention.

In the figure: 1. a valve body; 101. a lower drainage hole; 2. a side drain pipe; 201. a side drain hole; 3. a valve seat; 4. a valve core; 401. a valve plug; 5. a guide body; 501. a drain hole; 6. locking the nut; 7. a heat-insulating guide plate; 8. a seal ring; 9. lengthening a pipe; 901. a middle flange; 902. a middle flange bolt; 10. a valve stem; 1001. a valve rod ejector rod; 1002. mounting a rod; 11. a cold box connecting seat; 1101. a cold box connection; 1102. a bolt mounting seat; 12. an upper flange; 1201. an upper flange bolt; 13. a stuffing box sleeve; 1301. a filler; 1302. fixing the bolt; 1303. mounting a foot; 14. a stuffing box.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-4, an embodiment of the present invention is shown: the low-temperature simple core-pulling valve comprises a valve body 1; the bottom in the valve body 1 is provided with a valve seat 3, a valve core 4 is arranged inside the valve seat 3, the top of the valve core 4 is provided with a guide body 5, the top of the valve body 1 is provided with an elongated tube 9, the top of the guide body 5 is provided with a valve rod 10 extending to the top of the elongated tube 9, the outer side of the valve rod 10 at the bottom of the elongated tube 9 is fixedly provided with a heat insulation guide plate 7, the top of the elongated tube 9 is provided with a stuffing box 14, the tops of two sides of the elongated tube 9 are both provided with a cold box connecting seat 11, the outer side of the cold box connecting seat 11 is provided with a cold box connecting piece 1101, and the cold box connecting piece 1101 is provided with a bolt mounting seat 1102;

the stuffing box 14 is fixedly arranged at the top of the elongated pipe 9 through an upper flange 12, the upper flange 12 is arranged at the top of the elongated pipe 9 through an upper flange bolt 1201, a stuffing box sleeve 13 is arranged inside the stuffing box 14, the stuffing box sleeve 13 is sleeved on the outer surface of the valve rod 10, and a filler 1301 sleeved on the outer surface of the valve rod 10 is arranged on the stuffing box sleeve 13 inside the stuffing box 14;

concretely, thereby the inside disk seat 3 of valve body 1 can use with the cooperation of case 4 to realize the switching of valve, director 5 can conveniently carry out lift adjustment to case 4, thereby realize the switching of valve, extension pipe 9 can conveniently be to the installation and the sealed protection of director 5 top valve rod 10, valve rod 10 is convenient for the staff carries out on-off operation to the valve, packing box 14 can seal protection to valve rod 10, thermal-insulated deflector 7 can keep off the low temperature medium in the below, make extension pipe 9 and packing box 14 do not have the low temperature medium in, and then guaranteed extension pipe 9 and packing box 14's life, make the valve heat-insulated effect excellent, go up flange 12 and be convenient for the installation and the dismantlement of packing box 14, and be convenient for the staff to overhaul the maintenance of upper assembly such as packing box 14 and packing box sleeve 13.

Further, the bottom of the valve body 1 is provided with a lower liquid discharge hole 101, one side of the valve body 1 is provided with a side liquid discharge pipe 2, and the port of the side liquid discharge pipe 2 is provided with a side liquid discharge hole 201;

specifically, the lower drainage hole 101 and the side drainage hole 201 in the side drainage pipe 2 can facilitate the circulation of liquid when the valve body 1 is opened, and the staff can conveniently control the discharge of the liquid through the valve body 1.

Further, the bottom of the valve core 4 is provided with a valve plug 401, and the valve plug 401 is tightly attached to the valve seat 3 when closed;

specifically, the valve plug 401 can cooperate with the valve seat 3 to realize the opening and closing operation of the valve, and the valve plug 401 is tightly attached to the valve seat 3 during closing to ensure the sealing performance of the valve during closing.

Further, liquid guide holes 501 are uniformly distributed on the surface of the guide body 5, the guide body 5 is fixedly connected with the valve rod 10 through a locking nut 6 at the top part, the valve rod 10 is fixedly connected with the locking nut 6 through an installation rod 1002, and a valve rod ejector rod 1001 is arranged at the top part of the valve rod 10;

specifically, the liquid guide hole 501 is convenient for the conduction that the liquid in the guide body 5 can be even, and lock nut 6 can make things convenient for the fixed connection of valve rod 10 and guide body 5, and installation pole 1002 can make things convenient for valve rod 10 and lock nut 6 fixed connection, and makes things convenient for the dismouting between guide body 5 and the valve rod 10, and valve rod ejector 1001 can make things convenient for the staff to control valve rod 10.

Further, the lengthening pipe 9 is fixedly connected with the valve body 1 through a middle flange 901, and the middle flange 901 is installed on the top of the valve body 1 through a middle flange bolt 902;

specifically, the middle flange 901 facilitates the installation and the disassembly of the extension pipe 9, and the middle flange bolts 902 can ensure the firmness of the installation of the middle flange 901 and the valve body 1.

Further, a sealing ring 8 is sleeved on an inner ring at the joint of the heat insulation guide plate 7 and the valve rod 10, and an outer ring of the heat insulation guide plate 7 is tightly attached to the middle flange 901;

specifically, the sealing ring 8 can ensure the sealing effect of the heat insulation guide plate 7, and the heat insulation guide plate 7 tightly attached to the middle flange 901 can ensure the sealing performance of the contact part.

Further, one side of the stuffing box sleeve 13 is provided with a mounting foot 1303, and the mounting foot 1303 is provided with a fixing bolt 1302 fixedly connected with the stuffing box 14;

in particular, the mounting foot 1303 facilitates the fixed mounting of the fixing bolt 1302, and the fixing bolt 1302 and the stuffing box sleeve 13 can be fixedly mounted in the stuffing box 14.

The working principle is as follows: before using, be connected valve body 1 with side fluid-discharge tube 2 respectively through lower drain hole 101 with low temperature liquid pipeline, during the use, the staff operates valve rod ejector pin 1001 according to the demand and carries out the lift operation to valve rod 10, thereby drive guide body 5 and case 4 and carry out the lift adjustment, the valve realizes closed when case 4 descends to valve plug 401 and hugs closely disk seat 3, then can expand the flow of valve along with the rise height when case 4 rises, in the use, guide body 5 is heavily directed, thermal-insulated deflector 7 is two-fold to be directed, packing box 14 is three-fold to be directed, make the valve action steady and reliable, thermal-insulated deflector 7 that is located between extension pipe 9 and valve body 1 in addition can keep off the low temperature medium in the below, make in extension pipe 9 and the packing box 14 no low temperature medium, not only make things convenient for the dismouting to maintain, and can guarantee its life.

The utility model is not described in detail, but is well known to those skilled in the art.

Finally, it is to be noted that: although the present invention has been described in detail with reference to examples, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The low-temperature simple core-pulling valve comprises a valve body (1); the method is characterized in that: the valve comprises a valve body (1), a valve seat (3) is arranged at the bottom in the valve body (1), a valve core (4) is arranged inside the valve seat (3), a guide body (5) is arranged at the top of the valve core (4), an extension pipe (9) is arranged at the top of the valve body (1), a valve rod (10) extending to the top of the extension pipe (9) is arranged at the top of the guide body (5), a heat insulation guide plate (7) is fixedly arranged on the outer side of the valve rod (10) at the bottom of the extension pipe (9), a packing box (14) is arranged at the top of the extension pipe (9), cold box connecting seats (11) are arranged at the tops of two sides of the extension pipe (9), a cold box connecting piece (1101) is arranged on the outer side of the cold box connecting seat (11), and a bolt mounting seat (1102) is arranged on the cold box connecting piece (1101);

packing box (14) are through last flange (12) fixed mounting at the top of extension pipe (9), and go up flange (12) and install at the top of extension pipe (9) through last flange bolt (1201), the internally mounted of packing box (14) has packing box sleeve (13), and packing box sleeve (13) suit is at the surface of valve rod (10), be equipped with on packing box sleeve (13) of packing box (14) inside and establish filler (1301) at valve rod (10) surface at the cover.

2. The low-temperature simple core-pulling valve according to claim 1, characterized in that: the bottom of the valve body (1) is provided with a lower drainage hole (101), one side of the valve body (1) is provided with a side drainage pipe (2), and the port of the side drainage pipe (2) is provided with a side drainage hole (201).

3. The low-temperature simple core-pulling valve according to claim 1, characterized in that: the bottom of case (4) is equipped with valve plug (401), and valve plug (401) and disk seat (3) closely laminate when closed.

4. The low-temperature simple core-pulling valve according to claim 1, characterized in that: the surface evenly distributed of guide body (5) has drain hole (501), and guide body (5) through lock nut (6) and valve rod (10) fixed connection at top position, valve rod (10) are through installation pole (1002) and lock nut (6) fixed connection, and the top of valve rod (10) is equipped with valve rod ejector pin (1001).

5. The low-temperature simple core-pulling valve according to claim 1, characterized in that: the lengthening pipe (9) is fixedly connected with the valve body (1) through a middle flange (901), and the middle flange (901) is installed at the top of the valve body (1) through a middle flange bolt (902).

6. The low-temperature simple core-pulling valve according to claim 1 or 5, characterized in that: and a sealing ring (8) is sleeved on an inner ring at the joint of the heat insulation guide plate (7) and the valve rod (10), and the outer ring of the heat insulation guide plate (7) is tightly attached to the middle flange (901).

7. The low-temperature simple core-pulling valve according to claim 1, characterized in that: one side of the stuffing box sleeve (13) is provided with a mounting foot (1303), and the mounting foot (1303) is provided with a fixing bolt (1302) fixedly connected with the stuffing box (14).