CN213839800U

CN213839800U - High-temperature self-cooling valve

Info

Publication number: CN213839800U
Application number: CN202022858220.1U
Authority: CN
Inventors: 黄志辉; 李迎吉; 王振宇
Original assignee: Wuxi Institute of Technology
Current assignee: Wuxi Institute of Technology
Priority date: 2020-12-02
Filing date: 2020-12-02
Publication date: 2021-07-30
Anticipated expiration: 2030-12-02

Abstract

The utility model provides a high temperature is from cold valve, relate to valve technical field, including the valve body, this internal case chamber that is provided with of valve body, the both sides in case chamber are provided with inlet and liquid outlet respectively, case intracavity activity is provided with the case, be provided with the valve rod on the case, and the one end of valve rod and the upper end fixed connection of case, this internal fixed running through of valve body is provided with the screw rod cover, the other end activity of valve rod runs through the outside of screw rod cover to valve body, and threaded connection between the other end of valve rod and the screw rod cover, be provided with the sprue in the case, be provided with vice runner in the valve rod, vice runner includes inlet channel and the runner of giving vent to anger, inlet channel, the length direction homogeneous phase of runner and valve rod of giving vent to anger, inlet channel is the half-ring shape with the cross-section of the runner of giving vent to anger, inlet channel and the circumference equipartition along the valve rod of the runner of giving vent to anger. The utility model has the advantages of can realize self-cooling function under the high temperature operating mode, improve the reliability of during operation and life.

Description

High-temperature self-cooling valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to high temperature is from cold valve.

Background

The valve is a control part in a fluid conveying system and has the functions of stopping, adjusting, guiding, preventing counter flow, stabilizing pressure, shunting or overflowing and relieving pressure and the like. Valves used in fluid control systems range in variety and size from the simplest shut-off valves to the variety of valves used in extremely complex autonomous systems. The valve can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like. The opening and closing piece of the gate is a gate core, the movement direction of the gate core is perpendicular to the fluid direction, the gate core is mainly used for controlling the opening and closing of the fluid, and the gate core is also often used for controlling the flow during the specific use process. However, most of the valves used at present cannot realize a cooling function under the condition of a high-temperature working condition, and the service life and the service performance of the valves can be reduced under a long-time high-temperature environment.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a high temperature is from cold valve with can realize from cooling function under the high temperature operating mode, improved the reliability of during operation and life.

In order to solve the technical problem, the utility model provides a high temperature self-cooling valve, which comprises a valve body, a valve core cavity is arranged in the valve body, a liquid inlet and a liquid outlet are respectively arranged at two sides of the valve core cavity, a valve core is movably arranged in the valve core cavity, a valve rod is arranged on the valve core, one end of the valve rod is fixedly connected with the upper end of the valve core, a screw rod sleeve is fixedly arranged in the valve body in a penetrating way, the other end of the valve rod movably penetrates through the screw rod sleeve to the outside of the valve body, the other end of the valve rod is in threaded connection with the screw rod sleeve, a main runner is arranged in the valve core, an auxiliary runner is arranged in the valve rod, the auxiliary runner comprises an air inlet runner and an air outlet runner, the length directions of the air inlet runner, the air outlet runner and the valve rod are the same, the cross sections of the air inlet runner and the air outlet runner are semi-circular, the air inlet runner and the air outlet runner are uniformly distributed along the circumferential direction of the valve rod, and one end of the air inlet runner is flush with the other end of the valve rod, the other ends of the air inlet channel and the air outlet channel are communicated with the main channel, the end part of the other end of the valve rod is movably sleeved with a protective cover body, the protective cover body comprises a cylindrical sleeve, the upper end and the lower end of the cylindrical sleeve are both provided with openings, a circular partition plate is fixedly arranged in the cylindrical sleeve, the lower end opening of the cylindrical sleeve is movably sleeved outside the other end of the valve rod, the end surface of the other end of the valve rod is contacted with the bottom surface of the circular partition plate, an air inlet flow channel opening and an air outlet flow channel opening which are in one-to-one correspondence with the air inlet channel and the air outlet flow channel are arranged on the circular partition plate, an air inlet guide pipe device is arranged in the air inlet channel opening and is communicated with the air inlet channel, an air outlet channel protective plug with a matched shape is movably arranged in the air outlet flow channel opening, a locking nut and a hand wheel are sequentially sleeved outside the other end of the valve rod, the other end tip of valve rod still is provided with the internal thread hole, still the activity is provided with hand on the top surface of circular baffle and twists the bolt, and the activity of hand is twisted the bolt and is run through threaded connection between circular baffle and the internal thread hole.

Preferably, the air inlet guide pipe device comprises a communicating pipe, the communicating pipe is matched with the shape of the air inlet channel and fixedly penetrates through the air inlet channel opening, one end of the communicating pipe penetrates into the air inlet channel, the other end of the communicating pipe is provided with a cold air connecting pipe, the communicating pipe is communicated with the cold air connecting pipe, one end of the cold air connecting pipe is fixedly arranged on the side wall of the other end of the communicating pipe, the outer part of the other end of the cold air connecting pipe is connected with a pipe cover in a threaded manner, the outer peripheral wall of the other end of the cold air connecting pipe is also sleeved with a compression spring, and the compression spring is positioned between the pipe cover and the communicating pipe, so that high-pressure cold air generated by a refrigerator arranged outside the high-temperature self-cooling valve can conveniently enter the valve core from the auxiliary flow passage in the valve rod and the main flow passage in the valve core through the cold air connecting pipe, thereby can play the certain cooling effect to valve body and case, be favorable to ensureing the permanent reliable operation of this high temperature self-cooling valve.

Preferably, the one end activity of gas outlet channel protection stopper runs through in gas outlet flow channel mouth to the gas outlet flow channel, the other end of gas outlet channel protection stopper is located the outside of gas outlet flow channel mouth, this high temperature self-cooling valve of being convenient for when not using, can use gas outlet channel protection stopper to run through in gas outlet flow channel mouth to the gas outlet flow channel to play the guard action to the gas outlet flow channel, prevent external moisture and dust impurity etc. and get into, produce the jam in side flow channel and sprue easily, and then can influence the cooling effect when later stage uses.

Preferably, the main runner comprises an upper-section runner, a middle-section runner and a lower-section runner which are sequentially arranged from top to bottom, the upper-section runner is of a cylindrical groove-shaped structure, the lower-section runner is of a circular groove-shaped structure, the outer diameters of the upper-section runner and the lower-section runner are the same and are coaxial, the middle-section runner comprises a plurality of arc-shaped grooves which are uniformly distributed along the circumferential direction of the upper-section runner, the arc-shaped grooves correspond to the positions of the lower-section runner, the upper end of the arc-shaped groove is communicated with the upper section flow channel, the lower end of the arc-shaped groove is communicated with the lower section flow channel, the other ends of the air inlet flow channel and the air outlet flow channel penetrate through the upper end of the valve core and are communicated with the upper section flow channel, high-pressure cold air generated by the refrigerator enters from the air inlet flow channel in the valve rod and the main flow channel in the valve core in sequence through the cold air connecting pipe and then enters into the lower section flow channel through the upper section flow channel and the arc-shaped groove corresponding to the position of the air inlet flow channel in sequence; then the lower section flow channel passes through the arc-shaped groove corresponding to the position of the air outlet flow channel and the upper section flow channel, and finally the air is discharged from the air outlet flow channel for circulation, so that a certain cooling effect on the valve body and the valve core is realized.

Preferably, the inlet flow channel and the outlet flow channel are matched with the radian of the peripheral wall of the valve rod, so that the heat in the inlet flow channel and the outlet flow channel can be radiated by the peripheral wall of the valve rod.

Preferably, the top in the upper section of the flow channel is also fixedly provided with a flow distribution plate, the flow distribution plate and the upper section of the flow channel are the same in height, two ends of the flow distribution plate are fixedly arranged on the inner wall of the upper section of the flow channel, the air inlet flow channel and the air outlet flow channel are respectively positioned at two sides of the flow distribution plate, and the flow distribution plate is arranged so that high-pressure cold air generated by the refrigerator can directly blow into the arc-shaped groove corresponding to the position of the air inlet flow channel and enter the lower section of the flow channel after entering the upper section of the flow channel through the air inlet flow channel; meanwhile, hot air can be blown out of the lower segment flow channel into the arc-shaped groove corresponding to the air outlet flow channel, and then is discharged through the air outlet flow channel, so that cold air entering the upper segment flow channel can pass through the upper segment flow channel at the corresponding position, and a certain cooling effect on the valve body and the valve core is realized.

The utility model has the advantages that:

(1) high-pressure cold air is introduced into the valve core and the valve rod, so that the high-temperature self-cooling valve can be self-cooled under a high-temperature working condition, and the long-term reliable operation of the high-temperature self-cooling valve is ensured;

(2) the arrangement of the protective cover body is convenient for the high-temperature self-cooling valve to play a role in protecting the secondary flow passage when not in use, so that external moisture, dust, impurities and the like are prevented from entering, the secondary flow passage and the main flow passage are easy to block, and the cooling effect in later use is further influenced;

(3) the upper section runner, the middle section runner and the lower section runner are sequentially communicated from top to bottom, so that the contact area between the cold air and the valve core is increased, and the cooling effect can be improved.

Drawings

The accompanying drawings are included to provide a preferred understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a high-temperature self-cooling valve of the present invention;

fig. 2 is a schematic view of the position of the protective cover of the high temperature self-cooling valve of the present invention;

fig. 3 is a schematic diagram of the position of the internal thread hole of the high-temperature self-cooling valve of the present invention;

fig. 4 is a schematic structural view of a protective cover body of a high-temperature self-cooling valve according to the present invention;

fig. 5 is a schematic view of a cylindrical sleeve structure of a high-temperature self-cooling valve according to the present invention;

fig. 6 is a schematic view of the position of the splitter plate of the high temperature self-cooling valve of the present invention;

fig. 7 is the utility model relates to a sprue structure schematic diagram of high temperature self-cooling valve:

the reference signs are: 1. a valve body; 11. a liquid inlet; 12. a liquid outlet; 13. a screw rod sleeve; 2. a spool cavity; 3. a valve core; 31. a main flow channel; 311. an upper section runner; 312. a middle flow passage; 3121. an arc-shaped slot; 313. a lower section runner; 4. a valve stem; 41. a secondary flow passage; 411. an air inlet channel; 412. an air outlet flow channel; 42. locking the nut; 43. a hand wheel; 44. an internally threaded bore; 45. screwing the bolt by hand; 5. a protective cover body; 51. a cylindrical sleeve; 511. an intake runner port; 512. an air outlet flow channel opening; 52. a circular separator plate; 53. an intake air guide pipe device; 531. a communicating pipe; 532. a cold air connecting pipe; 533. a tube cover; 534. a compression spring; 54. a gas outlet passage protective plug; 6. a splitter plate.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-7, the high temperature self-cooling valve of this embodiment includes a valve body 1, a valve core cavity 2 is disposed in the valve body 1, a liquid inlet 11 and a liquid outlet 12 are disposed on two sides of the valve core cavity 2, a valve core 3 is movably disposed in the valve core cavity 2, a valve rod 4 is disposed on the valve core 3, one end of the valve rod 4 is fixedly connected to an upper end of the valve core 3, a screw rod sleeve 13 is fixedly disposed in the valve body 1 in a penetrating manner, the other end of the valve rod 4 movably penetrates the screw rod sleeve 13 to the outside of the valve body 1, the other end of the valve rod 4 is in threaded connection with the screw rod sleeve 13, a main flow passage 31 is disposed in the valve core 3, an auxiliary flow passage 41 is disposed in the valve rod 4, the auxiliary flow passage 41 includes an inlet flow passage 411 and an outlet flow passage 412, the length directions of the inlet flow passage 411, the outlet flow passage 412 and the valve rod 4 are the same, the cross sections of the inlet flow passage 411 and the outlet flow passage 412 are semi-circular, the inlet flow passage 411 and the outlet flow passage 412 are uniformly distributed along the circumferential direction of the valve rod 4, one end of the inlet flow passage 411 and one end of the outlet flow passage 412 are flush with the other end of the valve rod 4, the other end of the inlet flow passage 411 and the other end of the outlet flow passage 412 are communicated with the main flow passage 31, the other end of the valve rod 4 is movably sleeved with a protective cover body 5, the protective cover body 5 comprises a cylindrical sleeve 51 with an upper end and a lower end both open, a circular partition plate 52 is fixedly arranged in the cylindrical sleeve 51, the lower end opening of the cylindrical sleeve 51 is movably sleeved outside the other end of the valve rod 4, the other end face of the valve rod 4 is contacted with the bottom face of the circular partition plate 52, an inlet flow passage opening 511 and an outlet flow passage opening 512 which are in one-to-one correspondence with the inlet flow passage 411 and the outlet flow passage 412 are arranged on the circular partition plate 52, an inlet guide pipe device 53 is arranged in the inlet flow passage opening 511 and is communicated with the inlet flow passage 411, an air outlet channel protective plug 54 with a matched shape is movably arranged in the air outlet channel port 512, the air outlet channel protective plug 54 movably penetrates through the air outlet channel port 512 to the air outlet channel 412, a locking nut 42 and a hand wheel 43 are sequentially sleeved outside the other end of the valve rod 4, an internal thread hole 44 is further formed in the end portion of the other end of the valve rod 4, a hand-screwed bolt 45 is movably arranged on the top surface of the circular partition plate 52, and the hand-screwed bolt 45 movably penetrates through the circular partition plate 52 and is in threaded connection with the internal thread hole 44.

The air intake guiding pipe device 53 includes a communicating pipe 531, the communicating pipe 531 is adapted to the shape of the air intake conduit 411, the communicating pipe 531 fixedly penetrates through the air intake conduit 511, one end of the communicating pipe 531 penetrates into the air intake conduit 411, the other end of the communicating pipe 531 is provided with a cold air connecting pipe 532, the communicating pipe 531 is communicated with the cold air connecting pipe 532, one end of the cold air connecting pipe 532 is fixedly disposed on the side wall of the other end of the communicating pipe 531, the outer thread of the other end of the cold air connecting pipe 532 is connected with a pipe cover 533, a compression spring 534 is further sleeved on the outer peripheral wall of the other end of the cold air connecting pipe 532, and the compression spring 534 is disposed between the pipe cover 533 and the communicating pipe 531, so that the high-pressure cold air generated by the refrigerator disposed outside the high-temperature self-cooling valve enters the valve core 3 through the cold air connecting pipe 532 and then sequentially enters the valve core 3 from the secondary flow passage 41 in the valve stem 4 and the primary flow passage 31 in the valve core 3, thereby performing a certain cooling effect on the valve body 1 and the valve core 3, the high-temperature self-cooling valve is beneficial to ensuring long-term and reliable operation of the high-temperature self-cooling valve, one end of the air outlet channel protection plug 54 movably penetrates through the air outlet channel opening 512 to the air outlet channel 412, the other end of the air outlet channel protection plug 54 is positioned outside the air outlet channel opening 512, so that when the high-temperature self-cooling valve is not used, the air outlet channel protection plug 54 can penetrate through the air outlet channel opening 512 to the air outlet channel 412 so as to protect the air outlet channel 412 and prevent external moisture, dust and impurities and the like from entering, the blockage can be easily generated in the auxiliary channel 41 and the main channel 31, and further the cooling effect in later use can be influenced, the main channel 31 comprises an upper section channel 311, a middle section channel 312 and a lower section channel 313 which are sequentially arranged from top to bottom, the upper section channel 311 is of a cylindrical groove-shaped structure, the lower section channel 313 is of a circular groove-shaped structure, the outer diameters of the upper section channel 311 and the lower section channel 313 are the same and are coaxial, the middle section channel 312 comprises a plurality of arc grooves 3121 which are uniformly distributed along the circumferential direction of the upper section channel 311, the positions of the arc-shaped groove 3121 and the lower section flow channel 313 correspond to each other, the upper end of the arc-shaped groove 3121 is communicated with the upper section flow channel 311, the lower end of the arc-shaped groove 3121 is communicated with the lower section flow channel 313, the other ends of the air inlet flow channel 411 and the air outlet flow channel 412 both penetrate through the upper end of the valve core 3 and are communicated with the upper section flow channel 311, high-pressure cold air generated by the refrigerator enters from the air inlet flow channel 411 in the valve rod 4 and the main flow channel 31 in the valve core 3 through the cold air connecting pipe 532, and then enters into the lower section flow channel 313 through the upper section flow channel 311 and the arc-shaped groove 3121 corresponding to the positions of the air inlet flow channel 411 in sequence; then the high-pressure cold air generated by the refrigerator passes through the arc-shaped groove 3121 corresponding to the position of the air outlet flow passage 412 from the lower section flow passage 313, the upper section flow passage 311 and the air outlet flow passage 412, and finally the air is discharged from the air outlet flow passage 412 for circulation, so that a certain cooling effect on the valve body 1 and the valve core 3 is realized, the air inlet flow passage 411 and the air outlet flow passage 412 are both matched with the radian of the outer peripheral wall of the valve rod 4, so that the heat in the air inlet flow passage 411 and the air outlet flow passage 412 is favorably dissipated through the outer peripheral wall of the valve rod 4, a flow distribution plate 6 is fixedly arranged at the top of the upper section flow passage 311, the height of the flow distribution plate 6 is the same as that of the upper section flow passage 311, both ends of the flow distribution plate 6 are fixedly arranged on the inner wall of the upper section flow passage 311, the air inlet flow passage 411 and the air outlet flow passage 412 are respectively positioned at both sides of the flow distribution plate 6, and the flow distribution plate 6 can enable the high-pressure cold air generated by the refrigerator to enter the upper section flow passage 311 through the air inlet flow passage 411 and then can be directly blown into the arc-shaped groove 3121 corresponding to the position of the air inlet flow passage 411, And enters the lower section flow passage 313; meanwhile, hot air can be blown out of the lower section flow channel 313 into the arc-shaped groove 3121 corresponding to the position of the air outlet flow channel 412 and then discharged through the air outlet flow channel 412, so that cold air entering the upper section flow channel 311 can enter and exit through the upper section flow channel 311 at the corresponding position, and a certain cooling effect on the valve body 1 and the valve core 3 is realized.

The utility model discloses a theory of operation is: the valve rod 4 is driven to rotate in the screw rod sleeve 13 by rotating the hand wheel 43, and the valve core 3 can be driven to move up and down by the valve rod 4 due to the threaded connection between the other end of the valve rod 4 and the screw rod sleeve 13, so that the position of the valve core 3 in the valve core cavity 2 is adjusted, and the effect of adjusting the flow passing through the liquid inlet 11 and the liquid outlet 12 is achieved; after the position of the valve core 3 is adjusted, the cylindrical sleeve 51 is fixedly connected into the internal thread hole 44 at the end part of the other end of the valve rod 4 by screwing the bolt 45 with hands, after the cylindrical sleeve 51 is fixed, one end of the communicating pipe 531 can be inserted into the air inlet flow passage 411 at this time, the air outlet flow passage port 512 is in a state of being communicated with the air outlet flow passage 412, finally, the pipe cover 533 at the outside of the other end of the cold air connecting pipe 532 is taken down, and the other end of the cold air connecting pipe 532 is connected with the interface of the refrigerator which is separately arranged outside the high-temperature self-cooling valve, so as to improve the diversity and the adaptability of installation, the shape, the diameter and the length of the cold air connecting pipe 532 can be manufactured according to the interface of the refrigerator which is separately arranged outside the high-temperature self-cooling valve, so as to be better connected with the refrigerator; after the refrigerator is connected, high-pressure cold air generated by the refrigerator enters from the air inlet channel 411 in the valve rod 4 and the main channel 31 in the valve core 3 in sequence through the cold air connecting pipe 532, namely enters into the lower section channel 313 through the upper section channel 311 and the arc-shaped groove 3121 corresponding to the position of the air inlet channel 411; then the gas is discharged from the lower section flow passage 313 through the arc groove 3121 and the upper section flow passage 311 corresponding to the position of the gas outlet flow passage 412, and finally from the gas outlet flow passage 412 and the gas outlet flow passage opening 512; the upper section flow passage 311, the middle section flow passage 312 and the lower section flow passage 313 are sequentially communicated up and down, so that the contact area between the cold air and the valve core 3 is increased, and the cooling effect can be improved; the refrigerator can make the generated high-pressure cold air continuously flow in the air inlet channel 411, the air outlet channel 412 and the main channel 31 in the working state, so as to realize a certain cooling effect on the valve body 1, the valve rod 4 and the valve core 3 under the high-temperature working condition; after the refrigerator is used, the refrigerator is stopped, the refrigerator is disconnected from the other end of the cold air connecting pipe 532, the pipe cover 533 is screwed outside the other end of the cold air connecting pipe 532, the pipe cover 533 can compress the compression spring 534, so that the pipe cover 533 can be prevented from loosening, the pipe cover 533 can protect the cold air connecting pipe 532, one end of the air outlet channel protective plug 54 movably penetrates through the air outlet channel opening 512 and is inserted into the air outlet channel 412, the air outlet channel protective plug 54 can protect the air outlet channel opening 512 and the air outlet channel 412, namely, the pipe cover 533 and the air outlet channel protective plug 54 can prevent external moisture, dust and impurities from entering, easily generate blockage in the secondary channel 41 and the main channel 31, and further influence the cooling effect in later use; when the high-temperature self-cooling valve is stopped to be used for a short time, the refrigerator and the cold air connecting pipe 532 do not need to be disconnected, the refrigerator only needs to be stopped to work, and meanwhile, one end of the air outlet channel protective plug 54 movably penetrates through the air outlet channel opening 512 to be inserted into the air outlet channel 412, and when the high-temperature self-cooling valve needs to be used again, the air outlet channel protective plug 54 is taken down, and the refrigerator is started, so that the high-temperature self-cooling valve can be cooled and dissipated.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A high temperature self-cooling valve characterized in that: comprises a valve body (1), a valve core cavity (2) is arranged in the valve body (1), a liquid inlet (11) and a liquid outlet (12) are respectively arranged at two sides of the valve core cavity (2), a valve core (3) is movably arranged in the valve core cavity (2), a valve rod (4) is arranged on the valve core (3), one end of the valve rod (4) is fixedly connected with the upper end of the valve core (3), a spiral rod sleeve (13) is fixedly arranged in the valve body (1) in a penetrating manner, the other end of the valve rod (4) movably penetrates through the spiral rod sleeve (13) to the outside of the valve body (1), the other end of the valve rod (4) is in threaded connection with the spiral rod sleeve (13), a main flow passage (31) is arranged in the valve body (3), an auxiliary flow passage (41) is arranged in the valve rod (4), the auxiliary flow passage (41) comprises an air inlet flow passage (411) and an air outlet flow passage (412), the length directions of the air inlet flow passage (411), the air outlet flow passage (412) and the valve rod (4) are the same, the cross sections of the air inlet flow channel (411) and the air outlet flow channel (412) are semicircular, the air inlet flow channel (411) and the air outlet flow channel (412) are uniformly distributed along the circumferential direction of the valve rod (4), one ends of the air inlet flow channel (411) and the air outlet flow channel (412) are flush with the other end of the valve rod (4), the other ends of the air inlet flow channel (411) and the air outlet flow channel (412) are communicated with the main flow channel (31), the other end of the valve rod (4) is movably sleeved with a protective cover body (5), the protective cover body (5) comprises a cylindrical sleeve (51) with upper and lower ends being open, a circular partition plate (52) is fixedly arranged in the cylindrical sleeve (51), the lower end opening of the cylindrical sleeve (51) is movably sleeved outside the other end of the valve rod (4), the other end face of the valve rod (4) is in contact with the bottom face of the circular partition plate (52), and air inlet flow channel openings (511) and air outlet flow channel (412) which are in one-to one correspondence with each other are arranged on the circular partition plate (52) An air inlet guide pipe device (53) is arranged in the air inlet flow passage opening (511), the air inlet guide pipe device (53) is communicated with an air inlet flow passage (411), an air outlet passage protective plug (54) with a matched shape is movably arranged in the air outlet flow passage opening (512), the air outlet passage protective plug (54) movably penetrates through the air outlet flow passage opening (512) to the air outlet flow passage (412), a locking nut (42) and a hand wheel (43) are sequentially sleeved outside the other end of the valve rod (4), an internal threaded hole (44) is further formed in the end portion of the other end of the valve rod (4), a hand screwing bolt (45) is movably arranged on the top surface of the circular partition plate (52), and the hand screwing bolt (45) movably penetrates through the circular partition plate (52) and is in threaded connection with the internal threaded hole (44).

2. A high temperature self-cooling valve as claimed in claim 1, wherein: air inlet guide pipe device (53) includes communicating pipe (531), shape looks adaptation of communicating pipe (531) and air inlet duct (411), fixed intake runner mouth (511) that runs through in communicating pipe (531), and the one end of communicating pipe (531) runs through to in air inlet duct (411), the other end of communicating pipe (531) is provided with air conditioning connecting pipe (532), communicating pipe (531) is linked together with air conditioning connecting pipe (532), air conditioning connecting pipe (532) one end is fixed to be set up on the other end lateral wall of communicating pipe (531), the outside threaded connection of air conditioning connecting pipe (532) other end has tube cap (533), still the cover is equipped with compression spring (534) on the periphery wall of air conditioning connecting pipe (532) other end, and compression spring (534) are located between tube cap (533) and communicating pipe (531).

3. A high temperature self-cooling valve as claimed in claim 1, wherein: one end of the air outlet channel protective plug (54) movably penetrates through the air outlet channel opening (512) to the inside of the air outlet channel (412), and the other end of the air outlet channel protective plug (54) is positioned outside the air outlet channel opening (512).

4. A high temperature self-cooling valve as claimed in claim 1, wherein: main runner (31) includes upper segment runner (311) that top-down set gradually, middle section runner (312) and lower section runner (313), upper segment runner (311) is cylinder groove-shaped structure, lower section runner (313) is ring groove-shaped structure, upper segment runner (311) and lower section runner (313) external diameter are the same and coaxial line, middle section runner (312) include a plurality of arc wall (3121) along the circumference equipartition of upper segment runner (311), arc wall (3121) correspond with the position of lower section runner (313), and the upper end and the upper segment runner (311) of arc wall (3121) are linked together, the lower extreme and the lower section runner (313) of arc wall (3121) are linked together, the upper end of case (3) is all run through to the other end of inlet channel (411) and outlet channel (412), and all be linked together with upper segment runner (311).

5. A high temperature self-cooling valve as claimed in claim 1, wherein: the air inlet flow channel (411) and the air outlet flow channel (412) are matched with the radian of the outer peripheral wall of the valve rod (4).

6. A high temperature self-cooling valve as claimed in claim 4, wherein: the top in the upper section runner (311) is also fixedly provided with a splitter plate (6), the height of the splitter plate (6) is the same as that of the upper section runner (311), two ends of the splitter plate (6) are fixedly arranged on the inner wall of the upper section runner (311), and the air inlet runner (411) and the air outlet runner (412) are respectively positioned on two sides of the splitter plate (6).