CN214466123U

CN214466123U - Cage type low-temperature straight-through regulating valve

Info

Publication number: CN214466123U
Application number: CN202120547296.4U
Authority: CN
Inventors: 李亮
Original assignee: Tianjin Baicere Valve Manufacturing Co ltd
Current assignee: Tianjin Baicere Valve Manufacturing Co ltd
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2021-10-22
Anticipated expiration: 2031-03-16

Abstract

The utility model relates to a pipeline valve technical field especially relates to a cage low temperature through type governing valve. The to-be-solved technical problem of the utility model is that current device receives the easy tremor of water hammer effect and leads to the case impaired, and the valve rod warp, influences the flow control operation of device and the problem of leakproofness. In order to solve the technical problem, the utility model provides a cage low temperature through type governing valve, which comprises a valve body, the import has been seted up in the left side of valve body. The device is through setting up cushion chamber and buffering cock board, at the on-off valve in-process, with the rotatory butt that moves up and relieve with the movable block of stop collar for the surplus groove provides the action direction and reserves the action distance for the movable block, the fluid collides the buffering cock board because of water hammer effect, drives buffering pressure spring compression deformation, offsets the part and collides the application of force, reduces the fluid and strikes the damage of effect to the case, reduces the probability that the valve rod produces the deformation, security and reliability that lifting means used.

Description

Cage type low-temperature straight-through regulating valve

Technical Field

The utility model relates to a pipeline valve technical field specifically is a straight type governing valve of cage low temperature.

Background

The cage type regulating valve is a pressure balance type regulating valve, the valve inner part adopts a sleeve-guided pilot-operated valve core, the quick action of the valve core is realized by mainly utilizing the pressure of fluid, and the operating force is small.

The prior patent (publication number: CN207609844U) discloses a cage type single-seat regulating valve, which comprises a valve body, a valve cover, a cage-shaped sleeve, a valve rod and a valve plug, wherein the valve cover is fixedly connected and arranged at the axis of the top of the valve body, and a packing spring is arranged in the valve cover. The inventor finds that the following problems in the prior art are not solved well in the process of realizing the scheme: 1. the existing device is easy to shake by the water hammer effect in the opening and closing operation process, and particularly when fluid suddenly flows and collides with the valve core, the hardware of the valve core is easy to damage by stress, and the valve rod is possibly bent and deformed, so that the sealing effect of normal flow control of the device is influenced; 2. the prior device has low operation precision and poor use stability.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides a straight type governing valve of cage low temperature has solved current device and has received the easy tremor of water hammer effect and lead to the case impaired, and the valve rod warp, influences the flow control operation of device and the problem of leakproofness.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a cage low temperature through type governing valve, includes the valve body, the import has been seted up in the left side of valve body, the export has been seted up on the right side of valve body, the middle part fixedly connected with lantern of valve body inner wall, the case has been cup jointed in the inboard activity of lantern.

The valve comprises a valve core and a valve body, and is characterized in that the top of the valve core is fixedly connected with a valve rod, the outer side of the middle part of the valve rod is movably sleeved with a connecting pipe, the bottom of the connecting pipe is fixedly connected with a valve cover, the bottom of the valve cover is fixedly connected with the top of the valve body, the middle part of the connecting pipe is fixedly connected with a heat insulation plate, the top of the connecting pipe is fixedly connected with an end sleeve, and the top of the valve rod is movably sleeved on the inner side of the end sleeve.

The utility model discloses a pressure-sensitive adhesive valve, including case, cushion chamber, buffer cock board, top fixedly connected with buffer beam, the bottom fixedly connected with terminal plate of buffer beam, the top fixedly connected with buffering pressure spring of terminal plate, the top fixedly connected with of buffering pressure spring seals the cock ring, the top fixed connection who seals the cock ring and the top fixed connection of cushion intracavity wall.

The top end of the buffer rod is inserted and sleeved on the inner side of the valve rod, the allowance groove is formed in the side surface of the top end of the valve rod, the top end of the buffer rod is fixedly connected with a moving block, the moving block is movably sleeved on the inner side of the allowance groove, limiting threads are formed in the top of the valve rod and are arranged on the periphery side of the allowance groove, a limiting sleeve is connected to the surface threads of the limiting threads, and the bottom side end face of the limiting sleeve is abutted to the top of the moving block.

Further preferably, the valve rod is of a tubular structure, and the top end of the valve rod penetrates through the top of the end sleeve and extends to the outside of the end sleeve.

Further preferably, the buffer cavity is of a columnar structure, the outer edge of the buffer plug plate is provided with a rubber ring, and the inner surface of the buffer cavity is in sliding connection with the outer edge of the rubber ring.

Preferably, the bottom of the limiting ring is provided with a through hole, the through hole penetrates through the upper side and the lower side of the limiting ring, and the inner surface of the through hole is of a conical structure.

Further preferably, the buffering cock board is formed by the combination of cake iron, annular, screwed pipe seat jointly, the inboard at the cushion chamber is established to cake iron movable sleeve, the annular is seted up at the side surface of cake iron, the screwed pipe seat welding is in the centre of a circle position at cake iron top, screwed pipe seat and bumper beam's bottom threaded connection.

Preferably, the allowance groove is formed along a generatrix of the valve rod, and one end of the moving block penetrates through and extends out of the allowance groove.

(III) advantageous effects

The utility model provides a straight type governing valve of cage low temperature possesses following beneficial effect:

(1) the device is through setting up cushion chamber and buffering cock board, at the on-off valve in-process, with the rotatory butt that moves up and remove with the movable block of stop collar, make the residual groove provide the action direction and keep the movement distance for the movable block, the fluid collides the buffering cock board because of water hammer effect, make to produce relative position between buffering cock board and the case and remove, and drive buffering pressure spring compression deformation, offset the part and collide the application of force, reduce the damage of fluid impact effect to the case, reduce the probability that the valve rod produces the deformation, security and reliability that lifting means used.

(2) The device is through setting up spacing screw thread and stop collar, after the valve is opened and close and is accomplished, can make the stop collar produce along the axial on the valve rod surface through rotatory stop collar and move down the action, the bottom butt movable block of stop collar drives buffer beam and buffering plugboard relatively and the valve rod produces and moves down the action for the buffering plugboard moves down in the buffering intracavity side, case and conventional case are not different this moment, can cooperate pneumatic means and sensing equipment to accomplish normal flow control, stability in use and accuracy are better.

Drawings

FIG. 1 is a front sectional view of the structure of the present invention;

FIG. 2 is a front sectional view of the valve cartridge of the present invention;

fig. 3 is a sectional view of the valve stem of the present invention.

In the figure: the valve comprises a valve body 1, an inlet 2, an outlet 3, a sleeve 4, a valve core 5, a valve rod 6, a connecting pipe 7, a valve cover 8, a heat insulation plate 9, an end sleeve 10, a buffer cavity 11, a limiting ring 12, a buffer plug plate 13, a buffer rod 14, an end face plate 15, a buffer compression spring 16, a sealing plug ring 17, a surplus groove 18, a moving block 19, a limiting thread 20 and a limiting sleeve 21.

Detailed Description

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

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a cage low temperature through type governing valve, includes valve body 1, and import 2 has been seted up in the left side of valve body 1, and export 3 has been seted up on the right side of valve body 1, and the middle part fixedly connected with lantern 4 of valve body 1 inner wall, the inboard activity of lantern 4 has cup jointed case 5.

The top fixedly connected with valve rod 6 of case 5, valve rod 6 is the tubular structure, the top of pot head 10 is run through and extends to its outside on the top of valve rod 6, connecting pipe 7 has been cup jointed in the outside activity at valve rod 6 middle part, the bottom fixedly connected with valve gap 8 of connecting pipe 7, the bottom of valve gap 8 and the top fixed connection of valve body 1, the middle part fixedly connected with heat insulating board 9 of connecting pipe 7, the top fixedly connected with pot head 10 of connecting pipe 7, the top activity of valve rod 6 is cup jointed in the inboard of pot head 10.

The bottom of the valve core 5 is provided with a buffer cavity 11, the buffer cavity 11 is of a columnar structure, the outer edge of a buffer plug plate 13 is provided with a rubber ring, the inner surface of the buffer cavity 11 is in sliding connection with the outer edge of the rubber ring, the bottom of the buffer cavity 11 is fixedly connected with a limiting ring 12, the bottom of the limiting ring 12 is provided with an opening, the opening penetrates through the upper side and the lower side of the limiting ring 12, the inner surface of the opening is of a conical structure, the buffer plug plate 13 is movably sleeved on the inner side of the buffer cavity 11, the buffer plug plate 13 is formed by combining a cake iron, a ring groove and a threaded tube seat, the cake iron is movably sleeved on the inner side of the buffer cavity 11, the ring groove is arranged on the side surface of the cake iron, the threaded tube seat is welded at the circle center position of the top of the cake iron, the threaded tube seat is in threaded connection with the bottom end of the buffer rod 14, the top of the buffer plug plate 13 is fixedly connected with the buffer rod 14, the bottom end plate 15 is fixedly connected with an end plate 15, and the top of the end plate 15 is fixedly connected with a buffer pressure spring 16, top fixedly connected with of buffering pressure spring 16 seals cock 17, the top of closing cock 17 and the top fixed connection of 11 inner walls in cushion chamber, through setting up cushion chamber 11 and buffering cock board 13, in the on-off valve in-process, rotatory the moving up and remove the butt with movable block 19 with stop collar 21, make surplus groove 18 provide the action direction and reserve the operating distance for movable block 19, the fluid collides buffering cock board 13 because of the water hammer effect, make and produce the relative position between buffering cock board 13 and the case 5 and remove, and drive buffering pressure spring 16 compression deformation, offset the part and collide the application of force, reduce the damage of fluid impact effect to case 5, reduce the probability that valve rod 6 produced the deformation, safety and reliability that lifting means used.

The top end of the buffer rod 14 is inserted and sleeved on the inner side of the valve rod 6, the side surface of the top end of the valve rod 6 is provided with a allowance groove 18, the allowance groove 18 is arranged along the generatrix of the valve rod 6, one end of a moving block 19 penetrates through and extends out of the allowance groove 18, the top end of the buffer rod 14 is fixedly connected with the moving block 19, the moving block 19 is movably sleeved on the inner side of the allowance groove 18, the top of the valve rod 6 is provided with a limit thread 20, the limit thread 20 is arranged on the peripheral side of the allowance groove 18, the surface thread of the limit thread 20 is connected with a limit sleeve 21, the bottom end surface of the limit sleeve 21 is abutted with the top of the moving block 19, through the limit thread 20 and the limit sleeve 21, after the valve is opened and closed, the limit sleeve 21 can be rotated to enable the limit sleeve 21 to move downwards on the surface of the valve rod 6 along the axial direction, the bottom end of the limit sleeve 21 is abutted with the moving block 19 and drives the buffer rod 14 and the buffer plug plate 13 to move downwards relative to move with the valve rod 6, the buffering plug plate 13 moves downwards on the inner side of the buffering cavity 11, the valve core 5 is not different from the conventional valve core 5 at the moment, normal flow control can be completed by matching with pneumatic equipment and sensing equipment, and the use stability and accuracy are good.

The working principle is as follows: firstly, the limiting sleeve 21 is rotated to enable the limiting sleeve 21 to move upwards, the bottom side of the limiting sleeve 21 is separated from the top of the moving block 19, the top end of the limiting sleeve 21 moves to the top side of the allowance groove 18, a gap is reserved between the top end of the limiting sleeve 21 and the top of the moving block 19, the moving block 19 can move up and down in the allowance groove 18, and then the buffer rod 14 and the buffer plug plate 13 can move relative to the valve rod 6.

When the valve is opened and closed, fluid collides with the surface of the valve core 5, the fluid is applied with force by impact of the buffer plug plate 13, the valve rod 6 maintains self inertia at the moment, the buffer plug plate 13 with lower mass moves upwards in the buffer cavity 11 due to water flow impact, the end plate 15 compresses the buffer pressure spring 16, the buffer pressure spring 16 is deformed, the deformation absorbs the force application effect of part of water flow impacting the valve core 5, the instantaneous load of the valve core 5 is reduced, the damage of the water flow collision to the valve core 5 is reduced, and the probability of deformation and bending of the valve rod 6 is reduced.

After the on-off is completed, the limiting sleeve 21 is rotated reversely, the bottom end of the limiting sleeve 21 moves downwards and abuts against the top of the moving block 19, the limiting sleeve 21 moves downwards to drive the moving block 19 to move downwards, the buffer rod 14, the buffer plug plate 13 and the valve rod 6 generate relative position downward movement, the buffer plug plate 13 returns to the bottom side position of the buffer cavity 11 and abuts against the top of the limiting ring 12, the valve core 5 is not different from the valve core 5 of conventional equipment at the moment, and the device completes the flow control operation like a conventional cage type regulating valve.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention.

Claims

1. The utility model provides a cage low temperature through type governing valve, includes valve body (1), its characterized in that: an inlet (2) is formed in the left side of the valve body (1), an outlet (3) is formed in the right side of the valve body (1), a sleeve cage (4) is fixedly connected to the middle of the inner wall of the valve body (1), and a valve core (5) is movably sleeved on the inner side of the sleeve cage (4);

the top of the valve core (5) is fixedly connected with a valve rod (6), the outer side of the middle part of the valve rod (6) is movably sleeved with a connecting pipe (7), the bottom end of the connecting pipe (7) is fixedly connected with a valve cover (8), the bottom of the valve cover (8) is fixedly connected with the top of the valve body (1), the middle part of the connecting pipe (7) is fixedly connected with a heat insulation plate (9), the top of the connecting pipe (7) is fixedly connected with an end sleeve (10), and the top end of the valve rod (6) is movably sleeved on the inner side of the end sleeve (10);

the bottom of the valve core (5) is provided with a buffer cavity (11), the bottom of the buffer cavity (11) is fixedly connected with a limiting ring (12), the inner side of the buffer cavity (11) is movably sleeved with a buffer plug plate (13), the top of the buffer plug plate (13) is fixedly connected with a buffer rod (14), the bottom of the buffer rod (14) is fixedly connected with an end plate (15), the top of the end plate (15) is fixedly connected with a buffer pressure spring (16), the top of the buffer pressure spring (16) is fixedly connected with a sealing plug ring (17), and the top of the sealing plug ring (17) is fixedly connected with the top of the inner wall of the buffer cavity (11);

the top end of the buffer rod (14) is inserted and sleeved on the inner side of the valve rod (6), a allowance groove (18) is formed in the side surface of the top end of the valve rod (6), a moving block (19) is fixedly connected to the top end of the buffer rod (14), the moving block (19) is movably sleeved on the inner side of the allowance groove (18), a limiting thread (20) is formed in the top of the valve rod (6), the limiting thread (20) is arranged on the peripheral side of the allowance groove (18), a limiting sleeve (21) is connected to the surface thread of the limiting thread (20), and the bottom end face of the limiting sleeve (21) is abutted to the top of the moving block (19).

2. The cage type low temperature pass-through type regulating valve according to claim 1, wherein: the valve rod (6) is of a tubular structure, and the top end of the valve rod (6) penetrates through the top of the end sleeve (10) and extends to the outside of the end sleeve.

3. The cage type low temperature pass-through type regulating valve according to claim 1, wherein: the buffer cavity (11) is of a columnar structure, the outer edge of the buffer plug plate (13) is provided with a rubber ring, and the inner surface of the buffer cavity (11) is connected with the outer edge of the rubber ring in a sliding mode.

4. The cage type low temperature pass-through type regulating valve according to claim 1, wherein: the opening is seted up to the bottom of spacing ring (12), the opening link up the upper and lower side of spacing ring (12), and the internal surface of opening is the toper structure.

5. The cage type low temperature pass-through type regulating valve according to claim 1, wherein: buffering cock board (13) are formed by cake iron, annular, the common combination of screw tube seat, the inboard at buffer chamber (11) is established to the cake iron movable sleeve, the annular is seted up at the side surface of cake iron, the screw tube seat welding is in the centre of a circle position at cake iron top, the bottom threaded connection of screw tube seat and buffer beam (14).

6. The cage type low temperature pass-through type regulating valve according to claim 1, wherein: the allowance groove (18) is arranged along a bus of the valve rod (6), and one end of the moving block (19) penetrates through and extends out of the allowance groove (18).