CN217634185U

CN217634185U - Pneumatic angle type combination valve

Info

Publication number: CN217634185U
Application number: CN202221086066.3U
Authority: CN
Inventors: 张湘泉
Original assignee: Hunan Hongyuan High Pressure Valve Co ltd
Current assignee: Hunan Hongyuan High Pressure Valve Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-10-21
Anticipated expiration: 2032-05-07

Abstract

The application discloses pneumatic angle formula combination valve includes: the top of the gear box body is provided with a straight cylinder and an angle cylinder; the bottom of the gear box body is provided with a through valve body and an angle valve, and the through valve body is communicated with the inside of the angle valve; a stop valve rod is correspondingly arranged at the bottom of the straight cylinder, and one end of the stop valve rod penetrates through the gear box body to the inside of the straight valve body; the straight cylinder receives the air source, and drives the stop valve rod to move along the length direction of the straight cylinder under the driving action of the air source, so that the straight cylinder is sealed. The angle cylinder can rotate relative to the vertical axis of the angle cylinder, the bottom of the angle cylinder is coaxially connected with a gear transmission mechanism, and the output end of the gear transmission mechanism is coaxially connected with a ball valve rod; the ball valve rod penetrates through the gear box body to the inside of the angle valve; the angle cylinder can rotate under the driving action of the air source, and the gear transmission mechanism coaxially connected with the angle cylinder transmits the rotation to the ball valve rod, so that the ball valve rod is driven to seal the angle valve, the double-seal valve body is finally realized, and internal leakage is avoided.

Description

Pneumatic angle type combination valve

Technical Field

The application relates to the technical field of valve structures, in particular to a pneumatic angle type combination valve.

Background

In the industries of electric power, petroleum, chemical industry and the like, the layout of pipelines is complex and changeable. The media in the pipe must change direction due to site limitations and design requirements. Therefore, angle valves are used in many places. In addition, the angle valve is seriously washed due to large flow resistance.

Most of the existing angle valves are manual or electric valves, and the opening and closing time is long. Meanwhile, because only one seal is provided, the shutoff is not tight, and internal leakage is often caused.

Therefore, how to provide an angle valve structure with perfect sealing effect is a problem to be solved by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The pneumatic angle type composite valve structure is tight in sealing and achieves zero leakage.

To achieve the above object, the present application provides a pneumatic angle type combination valve, comprising: the gear box body is provided with a straight cylinder and an angle cylinder at the top; the bottom of the gear box body is provided with a straight-through valve body and an angle valve, and the straight-through valve body is communicated with the inside of the angle valve;

a stop valve rod is arranged at the bottom of the straight cylinder and penetrates through the gear box body to the inside of the straight valve body; the straight cylinder is used for driving the stop valve rod to move along the length direction of the stop valve rod so as to seal the straight valve body;

the bottom of the angle valve is coaxially connected with a gear transmission mechanism, the other end of the gear transmission mechanism is coaxially connected with a ball valve rod, and the ball valve rod penetrates through a gear box body to the inside of the angle valve; the angle cylinder is used for driving the gear transmission mechanism to rotate, so that the ball valve rod is driven to seal the angle valve.

In some embodiments, the gear housing comprises: an upper plate body and a lower plate body;

gear drive sets up between last plate body and the lower plate body, includes: a driving gear and a driven gear;

the driving gear is coaxially connected with the angle cylinder, the driven gear is coaxially connected with the ball valve rod, and the driving gear is used for driving the driven gear to rotate.

In some embodiments, the bottom of the stop valve rod is provided with a valve core, and a movable valve seat is arranged inside the through valve body and corresponds to the valve core.

In some embodiments, the straight cylinder and the angle cylinder are communicated with an air inlet valve for inputting a driving air source, and the connecting passages of the air inlet valve and the straight cylinder and the angle cylinder are respectively provided with a pressure regulating valve.

In some embodiments, the input of the intake valve is provided with a filter.

In some embodiments, the top of the corner cylinder is provided with a letter-back device

In some embodiments, the output end of the straight-through valve body is communicated with the input end of the angle valve, and the output end of the angle valve is inclined at a right angle relative to the output end of the straight-through valve body.

Compared with the prior art, the gear box is provided with the gear box body, and the top of the gear box body is provided with the straight cylinder and the angle cylinder; the bottom of the gear box body is provided with a through valve body and an angle valve, and the through valve body is communicated with the inside of the angle valve; a stop valve rod is correspondingly arranged at the bottom of the straight cylinder, and one end of the stop valve rod penetrates through the gear box body to the inside of the straight valve body; the straight cylinder receives the air source, and drives the stop valve rod to move along the length direction of the straight cylinder under the driving action of the air source, so that the straight cylinder is sealed to the straight valve body. The angle cylinder can rotate relative to the vertical axis of the angle cylinder, the bottom of the angle cylinder is coaxially connected with a gear transmission mechanism, and the output end of the gear transmission mechanism is coaxially connected with a ball valve rod; the ball valve rod penetrates through the gear box body to the inside of the angle valve; the angle cylinder can rotate under the driving action of an air source, and the gear transmission mechanism coaxially connected with the angle cylinder transmits the rotation to the ball valve rod, so that the ball valve rod is driven to seal the angle valve, and finally, a double-seal valve body is realized, the shutoff is tight, and the service life is long. And can really reach zero leakage.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only the embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a cross-sectional view of a pneumatic angle compounding valve provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a pneumatic angle type compound valve provided by an embodiment of the application;

fig. 3 is a partial schematic view of a straight-through valve body and an angle valve portion provided in an embodiment of the present application.

Wherein:

the air-pressure type hydraulic control valve comprises a gear box body 1, an upper plate body 11, a lower plate body 12, a straight cylinder 2, a cylinder rod 21, an angle cylinder 3, a letter-returning device 31, a straight valve body 4, a movable valve seat 41, a sealing gasket 42, an angle valve 5, a stop valve rod 6, a valve core 61, a cage sleeve 62, a ball valve rod 7, a ball 71, a switching sleeve 72, a driving gear 81, a driven gear 82, an air inlet valve 9, a pressure regulating valve 91 and a filter 92.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, 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 application.

In order to enable those skilled in the art to better understand the scheme of the present application, the present application will be described in further detail with reference to the accompanying drawings and the detailed description.

Referring to the accompanying drawings 1 and 2 in the specification, fig. 1 is a cross-sectional view of an aerodynamic angle type compound valve provided by an embodiment of the application, and fig. 2 is a structural schematic diagram of the aerodynamic angle type compound valve provided by the embodiment of the application, and the structural schematic diagram comprises: the gear box comprises a gear box body 1, wherein a straight cylinder 2 and an angle cylinder 3 are arranged at the top of the gear box body 1; the bottom of the gear box body 1 is provided with a through valve body 4 and an angle valve 5, and the interiors of the through valve body 4 and the angle valve 5 are communicated; a stop valve rod 6 is correspondingly arranged at the bottom of the straight cylinder 2, and one end of the stop valve rod 6 penetrates through the bottom of the gearbox body 1 and penetrates into the straight valve body 4; the straight cylinder 2 receives an air source, and drives the stop valve rod 6 to move along the length direction of the straight cylinder under the driving action of the air source, so that the straight cylinder is close to and seals the straight valve body 4. The angle cylinder 3 can rotate relative to the vertical axis of the angle cylinder, the bottom of the angle cylinder 3 is coaxially connected with a gear transmission mechanism, and the output end of the gear transmission mechanism is coaxially connected with a ball valve rod 7; the ball valve end of the ball valve rod 7 penetrates through the gear box body 1 to the inside of the angle valve 5; the angle cylinder 3 can rotate under the driving action of an air source, and a gear transmission mechanism coaxially connected with the angle cylinder transmits the rotation motion to the ball valve rod 7, so that the ball valve rod 7 is driven to seal the angle valve 5.

The flow medium of the valve enters from the input end of the straight-through valve body 4 and flows out from the output end of the angle valve 5; when the compound valve is closed, the first ball seal between the ball valve rod 7 and the angle valve 5 rotates by 90 degrees and is closed first, medium flow is cut off first, and the stop valve rod 6 is closed to be sealed with the second conical surface of the straight-through valve body 4 under the conditions of no medium flow and no pressure difference.

When the composite valve is opened, the second conical surface seal is opened first, and when the stroke is opened to 95%, the first spherical surface seal is opened by rotating 90 degrees. Of course, the specific data of the stroke and the specific rotation angle of the spherical seal are only applicable to some embodiments, and are not limited thereto, and the detailed description is omitted here.

Therefore, no matter the composite valve is closed or opened, the stop conical surface seal of the second straight-through valve body 4 is always protected, and meanwhile, the two seals are mutually protected and interdependent. The double-valve-rod and double-sealing structure has tight shutoff and long service life. And can really reach zero leakage.

The rotation angle of the angle valve 5 is determined according to actual requirements, and is not limited to one type, and the sealing rotation angle of the ball valve rod 7 varies according to the rotation angle of the angle valve 5, which is not described herein again.

Further, the gear housing 1 includes: the upper plate body 11 and the lower plate body 12 are stably supported by a plurality of vertical strut rods; the angle cylinder 3 is fixed on the upper plate body 11 through bolt, nut with straight cylinder 2, and above-mentioned gear drive sets up between the upper plate body 11 and lower plate body 12, and includes: a driving gear 81 sleeved on a transmission shaft at the bottom of the angle cylinder 3 and a driven gear 82 sleeved on the ball valve rod 7; the driving gear 81 and the driven gear 82 are connected through a key, and one or more transmission gears can be added between the driving gear and the driven gear to meet the installation requirement. The angle cylinder 3 rotates to drive the driving gear 81 to rotate, the driving gear 81 drives the driven gear 82 to rotate through key connection, and finally, the rotation is transmitted to the ball valve rod 7, so that the angle valve 5 is sealed.

Further, the straight cylinder 2 is a double-layer cylinder, the two cylinders and the two pistons are connected in series through a double-layer connecting pipe, and air enters from the upper ends of the two pistons to form double-time single-cylinder thrust. The double-layer cylinder comprises a layered plate positioned in the middle and a cylinder rod 21 vertically penetrating through the layered plate; the cylinder rod 21 is slidably connected to the laminate (a rubber ring may be provided therebetween), and when the sealing is controlled, air is introduced from the upper end of the piston, and the two pistons move downward, so that the cylinder rod 21 moves downward. The cylinder rod stop valve rods 6 are connected together through a connecting sleeve, and the stop valve rods 6 move downwards, so that the stop valve rods 6 move along the length direction of the stop valve rods and are attached and sealed to the through valve body 4. At this time, under the condition of no pressure difference and no medium flow, the conical surface sealing of the stop valve rod 6 of the compound valve and the straight-through valve body 4 is realized. The structure of the double-layer cylinder is adopted, so that the thrust is large, and the switching speed is high. Of course, the specific structure of the straight cylinder 2 is not limited thereto, and the detailed description thereof will be omitted.

Further, referring to fig. 3 of the specification, fig. 3 is a partial schematic view of a straight-through valve body and an angle valve portion provided in an embodiment of the present application, including: a valve core 61 is provided at the bottom of the stop valve rod 6, and a movable valve seat 41 is provided inside the straight-through valve body 4 corresponding to the valve core 61. Above-mentioned case 61 is spacing in the bottom of ending valve rod 6 through cage 62, and case 61 is independent part with activity disk seat 41, specifically can be the different STL (sealing material) of build-up welding, forms the hard seal after the machining, can change online maintenance alone, avoids cutting off the valve body from the pipeline, has saved the use cost of equipment.

Further, the straight cylinder 2 and the angle cylinder 3 are communicated with an air inlet valve 9, the output end of the air inlet valve 9 is respectively connected with two tee joints, the first tee joint divides an air source into two paths, one path is connected with an upper plate hole of the straight cylinder 2 through a pipeline and is used for air inlet from the upper end of the piston, and the other path is connected with the angle cylinder 3. A pressure regulating valve 91 for controlling the air input of the straight cylinder 2 is arranged between the first three-way joint and the straight cylinder 2.

The second three-way connector also divides the air source into two paths, one path is connected with the lower plate hole of the straight cylinder 2, and air is fed from the lower end of the piston. The other path is connected with the angle cylinder 3 through a pipeline. A pressure regulating valve 91 for controlling the air inflow of the angle cylinder 3 is arranged between the second three-way joint and the angle cylinder 3.

During the closing process of the pneumatic angle type combination valve, air inflow is controlled because the air quantity is adjusted by the pressure regulating valve 91 between the first three-way connector and the straight air cylinder 2. Therefore, the amount of air taken into the corner cylinders 3 is larger than the amount of air taken into the straight cylinders 2.

Under the driving of an air source, a transmission shaft of the angle cylinder 3 rotates 90 degrees firstly, the driving gear 81 rotates along with the transmission shaft, and the driven gear 82 and the driven gear shaft rotate 90 degrees through the transmission gear. The number of teeth and the modulus of the driving gear 81, the transmission gear and the driven gear 82 can be set to be the same; the ball valve rod 7 rotates and drives the bottom ball body 71 to rotate through the adapter sleeve 72. Therefore, after the angle cylinder 3 is ventilated, the ball 71 is rotated by 90 degrees, the ball seal is closed first, the medium flow is cut off, the pressure is reduced, and the spherical seal of the compound valve is realized. And then, the conical surface sealing of the stop valve rod 6 of the compound valve and the straight-through valve body 4 is realized, and finally, the complete sealing of the compound valve is realized.

During the closing of the pneumatic angle type combination valve, the air inflow is controlled by the pressure regulating valve 91 of the second three-way valve. Therefore, the amount of air taken into the straight cylinders 2 is larger than the amount of air taken into the corner cylinders 3.

Air is fed from the lower end of the straight air cylinder 2, and the piston of the straight air cylinder moves upwards. 2 both pistons move upward so that the cylinder rod 21 moves upward. The stop valve rod 6 moves upward to move the valve body 61 upward, and the valve body 61 is completely separated from the movable valve seat 41. In this case, in the absence of a pressure difference, the medium still does not flow, but only the first opening of the conical seal is achieved. And then, the spherical seal moves reversely to open for two times, and finally the composite valve is completely opened.

Of course, the communication mode between the intake valve 9 and the straight cylinder 2 and the corner cylinder 3 is not limited to the above, and the adjustment of the air source input amount can be realized by setting an independent pipeline for corresponding connection, and the like, which is not described herein again.

Further, the filter 92 is arranged at the input end of the air inlet valve 9, so that the purity of the air source is ensured, and impurities are prevented from entering the valve body to cause damage. The specific arrangement and method of use of the filter 92 described above is well within the skill of the art and will not be further described herein.

Furthermore, a feedback device 31 for feeding back a switching signal is arranged at the top of the angle cylinder 3, and the feedback device 31 is arranged outside to facilitate a user to control the stroke of the angle cylinder 3 and adjust the operating state of the angle cylinder 3. The above-mentioned specific arrangement and usage of the echoing device 31 can be referred to the prior art, and will not be expanded herein.

The output end of the straight-through valve body 4 is communicated with the input end of the angle valve 5, and the output end of the angle valve 5 is arranged in a 90-degree right-angle inclined mode relative to the output end of the straight-through valve body 4 to achieve the function of the angle valve 5, so that the medium output is turned.

The inclination angle between the input end of the straight-through valve body 4 and the output end of the angle valve 5 can be changed according to actual conditions, so that the purpose of adapting to various working conditions is achieved.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The pneumatic angle compounding valve provided by the present application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

Claims

1. A pneumatic angle compounding valve, comprising: the gear box comprises a gear box body (1), wherein a straight cylinder (2) and an angle cylinder (3) are arranged at the top of the gear box body (1); the bottom of the gear box body (1) is provided with a through valve body (4) and an angle valve (5), and the through valve body (4) is communicated with the inside of the angle valve (5);

a stop valve rod (6) is arranged at the bottom of the straight cylinder (2), and the stop valve rod (6) penetrates through the gear box body (1) to the inside of the straight valve body (4); the straight cylinder (2) is used for driving the stop valve rod (6) to move along the length direction of the straight cylinder so as to seal the straight valve body (4);

the bottom of the angle valve (5) is coaxially connected with a gear transmission mechanism, the other end of the gear transmission mechanism is coaxially connected with a ball valve rod (7), and the ball valve rod (7) penetrates through the gear box body (1) to the inside of the angle valve (5); the angle cylinder (3) is used for driving the gear transmission mechanism to rotate, so that the ball valve rod (7) is driven to seal the angle valve (5).

2. Pneumatic angle compounding valve according to claim 1, characterized in that the gearbox casing (1) comprises: an upper plate body (11) and a lower plate body (12);

the gear transmission mechanism is arranged between the upper plate body (11) and the lower plate body (12), and comprises: a drive gear (81) and a driven gear (82);

the driving gear (81) is coaxially connected with the angle cylinder (3), the driven gear (82) is coaxially connected with the ball valve rod (7), and the driving gear (81) is used for driving the driven gear (82) to rotate.

3. Pneumatic angular compound valve according to claim 2, characterized in that said straight cylinder (2) is provided as a double-deck cylinder comprising: the device comprises a layered plate positioned in the middle and a cylinder rod (21) vertically penetrating and connecting the layered plate, wherein the cylinder rod (21) is used for connecting the stop valve rod (6).

4. The pneumatic angular compound valve according to claim 3, characterized in that the bottom of the stop valve rod (6) is provided with a valve core (61), and a movable valve seat (41) corresponding to the valve core (61) is arranged inside the through valve body (4).

5. The pneumatic angular compound valve according to claim 4, characterized in that the straight cylinder (2) and the angular cylinder (3) are communicated with an air inlet valve (9) for inputting a driving air source, and the connecting passages of the air inlet valve (9) and the straight cylinder (2) and the angular cylinder (3) are respectively provided with a pressure regulating valve (91).

6. Pneumatic angular compound valve according to claim 5, characterized in that the input of the intake valve (9) is provided with a filter (92).

7. Pneumatic angle valve according to claim 6, characterized in that the top of the angle cylinder (3) is provided with a letter-back (31).

8. Pneumatic angle combination valve according to any of claims 1 to 7, characterized in that the outlet of the through valve body (4) communicates with the inlet of the angle valve (5), the outlet of the angle valve (5) being inclined at right angles to the outlet of the through valve body (4).