CN211202953U

CN211202953U - Low-temperature regulating valve

Info

Publication number: CN211202953U
Application number: CN201922409512.4U
Authority: CN
Inventors: 洪振鹏
Original assignee: Guowei Valve Manufacturing Co ltd
Current assignee: Guowei Valve Manufacturing Co ltd
Priority date: 2019-12-28
Filing date: 2019-12-28
Publication date: 2020-08-07
Anticipated expiration: 2029-12-28

Abstract

The utility model discloses a low temperature regulating valve, including valve case, valve rod and valve plug, be equipped with into water passageway and play water passageway on the valve case, be provided with the valve pocket of intercommunication water passageway and play water passageway in the valve case, be provided with integral type through-flow buffer block in the water passageway, the valve plug is located the water passageway and is located the upper portion of buffer block, the one end of valve rod stretches into the valve pocket. The utility model discloses in, set up the buffer block in the inhalant canal of valve case, set up the buffering hole on the buffer block, the valve block is located the valve case and plays the effect of opening and close the buffer hole on the buffer block, rotation fit has the valve block in the valve pocket, some of valve block is the toper, another part is spherical, wherein the spherical part is used for shutoff exhalant canal, the flow that the exhalant canal was adjusted to the conical part, from this, through opening the valve block in advance, the fluid is advanced to go into the valve pocket, the pressure differential of valve block both sides is little, reduce the resistance that the valve block opened.

Description

Low-temperature regulating valve

Technical Field

The utility model relates to a governing valve technical field especially relates to low temperature regulating valve.

Background

The low temperature regulating valve is used in the environment with lower temperature, and has great load in rotating the valve rod, long length, easy strength lowering and long service life.

Because, the governing valve sets up the valve block, and the valve block blocks up and carries out the shutoff to inhalant canal, drives the shutoff through the control valve rod and keeps away from the valve port in the inhalant canal, and the valve rod top adopts to close soon there is the driving piece, and the driving piece is rotatory to drive the valve rod and moves up, and the fluid in the inhalant canal is big to the pressure of shutoff, leads to closing soon the resistance big, and the intensity of valve rod and driving piece reduces under microthermal environment simultaneously, and then reduces the life of whole governing valve.

Therefore, the utility model provides a low temperature regulating valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the low-temperature regulating valve is provided for solving the problems that the opening resistance of the existing low-temperature regulating valve is large and the service life of a valve rod is short.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

low temperature regulating valve, including valve case, valve rod and valve block, be equipped with inlet channel and outlet channel on the valve case, be provided with the valve pocket of intercommunication inlet channel and outlet channel in the valve case, be provided with integral type through-flow buffer block in the inlet channel, the valve block is located inlet channel and is located the upper portion of buffer block, the one end of valve rod stretches into in the valve pocket, and its fixed valve block that is provided with of surface wall, one side of valve block is the conical body and cooperates with outlet channel with conical body relative one side, the top of valve block is rotated and is connected with and runs through the valve rod and stretch out outside drive shaft, drive shaft and valve rod revolve the connection of closing, the buffering hole has been seted up on the buffer block.

As a further description of the above technical solution:

the valve block is of a spherical structure, and the conical body is of a conical structure.

As a further description of the above technical solution:

the outer diameter of the valve plug is smaller than the inner diameter of the water inlet channel.

As a further description of the above technical solution:

the bottom of the valve plug is fixedly provided with an auxiliary shaft, and the top center of the buffer block is provided with a counter bore which is in up-and-down sliding fit with the auxiliary shaft.

As a further description of the above technical solution:

and the outer surface wall of the auxiliary shaft is provided with pressure relief grooves distributed circumferentially.

As a further description of the above technical solution:

and a rotating handle is fixedly arranged on the driving shaft and positioned outside.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, set up the buffer block in the inhalant canal of valve case, set up the buffering hole on the buffer block, the valve block is located the valve case and plays the effect of opening and close the buffer hole on the buffer block, rotation fit has the valve block in the valve pocket, some of valve block is the toper, another part is spherical, wherein the spherical part is used for shutoff exhalant canal, the flow that the exhalant canal was adjusted to the conical part, from this, through opening the valve block in advance, the fluid is advanced to go into the valve pocket, the pressure differential of valve block both sides is little, reduce the resistance that the valve block opened.

2. The utility model discloses in, the last connection drive shaft that rotates of valve plug, valve piece and valve rod fixed connection, valve rod are used for the control valve piece rotatory, and drive shaft and valve rod run through and close the cooperation soon, can control the stifled lift of valve through rotatory drive shaft from this, and under the protection of valve rod, the axial resistance of bearing of drive shaft is little simultaneously, can improve the life of drive shaft and valve rod greatly.

Drawings

Fig. 1 shows a schematic structural diagram of a valve housing, a valve plug, a valve block and a valve rod matching section provided according to an embodiment of the present invention;

fig. 2 shows a schematic structural diagram of a cross-section of a valve rod and a valve plug provided according to an embodiment of the present invention;

fig. 3 shows a schematic structural diagram of a valve housing and a valve block matching section provided according to an embodiment of the present invention.

Illustration of the drawings:

1. a valve housing; 11. a water inlet channel; 111. a buffer block; 1111. a buffer hole; 1112. a counter bore; 12. a water outlet channel; 13. a valve cavity; 2. a valve stem; 21. a valve block; 211. a conical body; 3. valve plugging; 31. an auxiliary shaft; 311. a pressure relief groove; 4. a drive shaft; 41. the handle is rotated.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the low-temperature regulating valve comprises a valve shell 1, a valve rod 2 and a valve plug 3, wherein a water inlet channel 11 and a water outlet channel 12 are arranged on the valve shell 1, a valve cavity 13 communicated with the water inlet channel 11 and the water outlet channel 12 is arranged in the valve shell 1, an integrated through-flow buffer block 111 is arranged in the water inlet channel 11, the valve plug 3 is positioned in the water inlet channel 11 and positioned at the upper part of the buffer block 111, one end of the valve rod 2 extends into the valve cavity 13, a valve block 21 is fixedly arranged on the outer surface wall of the valve rod 2 and is in rotating fit with the valve shell 1, one side of the valve block 21 is a conical body 211 and is matched with the water outlet channel 12 at the opposite side of the conical body 211, the valve block 21 can be controlled to rotate by rotating the valve rod 2, the periphery of the valve block 21 and the valve cavity 13 adopt a known sealing fit structure, description is omitted, the rotation of the valve block 21 can realize the flow rate of fluid discharged through the, drive shaft 4 and valve rod 2 close the connection soon, buffer hole 1111 has been seted up on buffer block 111, buffer hole 1111's aperture is little, the external diameter of valve plug 3 is less than the internal diameter of water inlet channel 11, drive shaft 4 is last and be located the external fixation and be provided with rotatory handle 41, can realize valve plug 3 and keep away from buffer block 111 through rotatory drive shaft 4 from this, fluid gets into valve pocket 13 from punching a hole 1111, and fill valve pocket 13, from this, the pressure differential of both sides reduces about valve plug 3, it is more laborsaving to rotate rotatory handle 41 this moment, and simultaneously, improve drive shaft 4's life, then realize the regulation of the size of opening of water outlet channel 12 through rotating valve rod 2.

Specifically, as shown in fig. 1 and 3, the valve block 21 has a spherical structure, the conical body 211 has a conical structure, and the valve chamber 13 has a spherical shape, so that the valve block 21 and the valve chamber 13 have good sealing performance.

Specifically, as shown in fig. 1 and 2, an auxiliary shaft 31 is fixedly arranged at the bottom of the valve plug 3, a counter bore 1112 which is in up-and-down sliding fit with the auxiliary shaft 31 is formed in the top center of the buffer block 111, and due to the limitation of the function of the low-temperature regulating valve, the lengths of the valve rod 2 and the driving shaft 4 are long, and the arrangement of the auxiliary shaft 31 can improve the stability of the rotation of the valve rod 2 and the driving shaft 4.

Specifically, as shown in fig. 2, the outer wall of the auxiliary shaft 31 is provided with pressure relief grooves 311 distributed circumferentially, so as to avoid the phenomenon that water in the counter bore 1112 is difficult to discharge.

The working principle is as follows: when the adjustable valve is used, the adjustable valve is connected into a pipeline, initially, the adjustable valve is in a closed state, the pipeline is cut off, the driving shaft 4 is driven to rotate manually or by an external driving motor, the valve plug 3 is far away from the buffer block 111, and fluid enters the valve cavity 13 from the buffer hole 1111, so that the pressure difference between two sides of the valve plug 3 is small, the valve plug 3 is convenient to open, the valve rod 2 is rotated at the moment, an operation disc is usually installed outside the valve rod 2, the valve rod 2 drives the valve block 21 to rotate, the water outlet channel 12 is opened, the flow is adjusted in the switching process of the conical body 211, the fluid is discharged from the water inlet channel 11 through the valve cavity 13 through the water outlet channel 12, the fluid pressure borne by the valve block 21 is small, and the service lives of the driving shaft 4 and the valve rod 2 can be prolonged.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The low-temperature regulating valve comprises a valve shell (1), a valve rod (2) and a valve plug (3), wherein a water inlet channel (11) and a water outlet channel (12) are arranged on the valve shell (1), a valve cavity (13) communicated with the water inlet channel (11) and the water outlet channel (12) is arranged in the valve shell (1), the low-temperature regulating valve is characterized in that an integrated buffer block (111) is arranged in the water inlet channel (11), the valve plug (3) is positioned in the water inlet channel (11) and positioned on the upper portion of the buffer block (111), one end of the valve rod (2) extends into the valve cavity (13), a valve block (21) is fixedly arranged on the outer surface wall of the valve rod, one side of the valve block (21) is a conical body (211) and matched with the water outlet channel (12) opposite to the conical body (211), and a driving shaft (4) penetrating through the valve rod (2) and extending out of the valve plug (, the driving shaft (4) is connected with the valve rod (2) in a screwing mode, and the buffer block (111) is provided with a buffer hole (1111).

2. Cryogenic regulating valve according to claim 1, characterized in that the valve block (21) is of spherical construction and the cone (211) is of conical construction.

3. Cryogenic regulating valve according to claim 2, characterized in that the outer diameter of the valve plug (3) is smaller than the inner diameter of the water inlet channel (11).

4. The cryogenic regulating valve according to claim 3, wherein an auxiliary shaft (31) is fixedly arranged at the bottom of the valve plug (3), and a counter bore (1112) which is in up-and-down sliding fit with the auxiliary shaft (31) is formed in the center of the top of the buffer block (111).

5. The cryogenic regulating valve according to claim 4, wherein the outer surface wall of the auxiliary shaft (31) is provided with circumferentially distributed pressure relief grooves (311).

6. Cryogenic regulating valve according to claim 1, characterized in that a rotary knob (41) is fixedly arranged on the drive shaft (4) and on the outside.