CN212377320U

CN212377320U - Variable air volume butterfly valve

Info

Publication number: CN212377320U
Application number: CN202020747019.3U
Authority: CN
Inventors: 夏本明
Original assignee: Shanghai Isong Airflow Control Technology Co ltd
Current assignee: Shanghai Isong Airflow Control Technology Co ltd
Priority date: 2020-05-08
Filing date: 2020-05-08
Publication date: 2021-01-19
Anticipated expiration: 2030-05-08

Abstract

The utility model belongs to the technical field of butterfly valve equipment, specifically disclose a variable air volume butterfly valve, including the butterfly valve body, the whole cuboid structure that is of butterfly valve body, the front portion of butterfly valve body sets up to the flow chamber, install the fixed pipe of mouthpiece in the flow chamber, the mouthpiece is installed to the fixed intraductal symmetry of mouthpiece, flow chamber top symmetry is provided with the air cock, the air cock is connected with the mouthpiece, through trachea and air cock three-way connection between the air cock, butterfly valve body rear portion is provided with the regulation chamber, it is provided with the valve block to lean on down in the middle part of regulation chamber, it is provided with the valve rod to adjust the chamber bilateral symmetry, the valve block is connected with the valve rod, the valve. The invention can be connected with a plurality of nozzles in parallel according to the size of the valve, each nozzle is provided with an air nozzle, the air nozzles take pressure in each flow cavity and finally collect the pressure into an air pipe to be connected into the control mainboard, and the measured pressure is more accurate, thereby obtaining high-precision flow data.

Description

Variable air volume butterfly valve

Technical Field

The utility model relates to a butterfly valve equipment correlation field specifically is a variable air volume butterfly valve.

Background

The existing technical scheme is a common variable air volume butterfly valve, namely a cross-shaped or rod-shaped pitot tube flow sensor is used for self flow feedback, the measurement accuracy of the flow measurement of the type is poor under low wind speed, the control accuracy of the butterfly valve is poor, and the requirement of high-response speed and high-accuracy control in a laboratory environment cannot be met.

The control box of the common variable air volume butterfly valve is of a cuboid structure, a large space is needed when the butterfly valve is opened, and the opening angle is limited in places with dense air pipes. The variable air volume butterfly valve is designed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a variable air volume butterfly valve, which solves the problems of low measurement precision, slow response speed and inaccurate data of the traditional butterfly valve flow sensor in the background technology; meanwhile, the valve control box occupies a large space and leaves the factory without a flange, so that the valve control box is inconvenient to install and the like.

In order to achieve the above object, the utility model provides a following technical scheme: a variable air volume butterfly valve comprises a butterfly valve body, a flow cavity and an adjusting cavity, wherein the butterfly valve body is integrally of a cuboid structure, the front part of the butterfly valve body is provided with the flow cavity, a nozzle fixing pipe is installed in the flow cavity, nozzles are symmetrically installed in the nozzle fixing pipe, air faucets are symmetrically arranged at the top end of the flow cavity and are connected with the nozzles, the air faucets are connected with one another through air pipes and air nozzle tee joints, the rear part of the butterfly valve body is provided with the adjusting cavity, a valve block is arranged at the middle part of the adjusting cavity and is leaned against the lower part, the area of the valve block is the same as the rectangular area of the inner diameter section of the butterfly valve body at the middle part, valve rods are symmetrically arranged at two sides of the adjusting cavity, the valve block is connected with the valve rods, the valve rods, the air faucet tee joint is connected with the control box through an air pipe, and the actuator is connected with the control box.

Preferably, a plurality of first air holes and a plurality of second air holes are formed in the nozzle, the first air holes are perpendicular to the butterfly valve body, and the second air holes are parallel to the butterfly valve body.

Preferably, the air faucet is installed at one side of the inner side of the nozzle.

Preferably, the front side and the rear side of the butterfly valve body are symmetrically provided with mounting flanges.

Preferably, the section of the valve plate is rectangular, and the valve plate is of a split multi-blade structure.

Preferably, the rotation angle of the rotating device is 0-90 degrees.

Preferably, a control main board is arranged inside the control box, and the air pipe and the actuator are connected with the control main board.

Preferably, the control box is of a square structure, the control box cover is obliquely arranged on the control box, and a buckle is arranged at an opening at the front part of the control box cover.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model belongs to the technical field of butterfly valve equipment, specifically disclose a variable air volume butterfly valve, through parallelly connected a plurality of nozzles that set up on the butterfly valve body, every nozzle is equipped with an air cock, and the air cock is got the pressure in each flow cavity, finally collects to a trachea and inserts the control mainboard, and the pressure that measures is more accurate to acquire the flow data of high accuracy; meanwhile, the control box which is originally rotationally opened is set to be inclined pinch plate opening, and meanwhile, the inclined pinch plate opening avoids the space required by original rotation, and the control box is better installed so as to control the valve control flow; the invention has simple structure, convenient operation and strong practicability.

Drawings

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

FIG. 2 is a schematic view of the air faucet tee of the present invention;

FIG. 3 is a schematic view of a nozzle fixing tube according to the present invention;

FIG. 4 is a schematic view of a nozzle of the present invention;

in the figure: 1. a butterfly valve body; 2. a flow chamber; 3. an adjustment chamber; 4. a nozzle fixing tube; 5. a nozzle; 6. an air tap; 7. an air tube; 8. an air tap tee joint; 9. a valve plate; 10. a valve stem; 11. an actuator; 12. a rotating device; 13. a mounting frame; 14. a control box; 15. a first air hole; 16. a second air hole; 17. installing a flange; 18. a control box cover; 19. and (5) buckling.

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.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-4, the present invention provides a technical solution: a variable air volume butterfly valve comprises a butterfly valve body 1, a flow cavity 2 and an adjusting cavity 3, wherein the whole butterfly valve body 1 is of a cuboid structure, the front part of the butterfly valve body 1 is provided with the flow cavity 2, a nozzle fixing pipe 4 is installed in the flow cavity 2, nozzles 5 are symmetrically installed in the nozzle fixing pipe 4, air nozzles 6 are symmetrically arranged at the top end of the flow cavity 2, the air nozzles 6 are connected with the nozzles 5, the air nozzles 6 are connected with an air nozzle tee joint 8 through an air pipe 7, the rear part of the butterfly valve body 1 is provided with the adjusting cavity 3, a valve block 9 is arranged at the middle part of the adjusting cavity 3 in a lower mode, the area of the valve block 9 is the same as the rectangular area of the inner diameter section of the butterfly valve body 1, valve rods 10 are symmetrically arranged at two sides of the adjusting cavity 3, the valve block 9 is connected with the valve rods 10, the executor 11 is fixed at the regulation chamber 3 lateral wall through executor mounting bracket 13, 1 lateral wall of butterfly valve body is provided with control box 14, air cock tee bend 8 passes through trachea 7 and connects control box 14, executor 11 is connected with control box 14.

Further, be provided with a plurality of first gas pockets 15 and a plurality of second gas pocket 16 in mouthpiece 5, first gas pocket 15 perpendicular to butterfly valve body 1, second gas pocket 16 is on a parallel with butterfly valve body 1, according to the different models of valve, adopts a plurality of mouthpieces 5 to carry out flow measurement, every mouthpiece 5 all sets up air cock 6 and carries out pressure data and obtains, the first gas pocket of perpendicular to valve body and the second gas pocket that is on a level with the valve body, gas forms pressure after getting into first gas pocket and second gas pocket, the pressure in first gas pocket and second gas pocket is received respectively to two gas pockets of air cock, transmit pressure to the control mainboard, can obtain the pipeline velocity of flow through calculating behind the pressure value that the control mainboard surveyed.

Further, the air tap is installed on one side of the inner side of the nozzle.

Furthermore, the mounting flanges 17 are symmetrically arranged on the front side and the rear side of the butterfly valve body 1, so that the butterfly valve body is convenient to mount.

Further, the section of the valve plate 9 is rectangular, and the valve plate 9 is of a split multi-blade structure.

Further, the rotation angle of the rotating device 12 is 0-90 degrees.

Further, a control main board is arranged inside the control box 14, and the air pipe 7 and the actuator 11 are connected with the control main board.

Further, control box 14 is square structure, and control box lid 18 slope sets up on control box 14, the anterior opening part of control box lid 18 is equipped with buckle 19, sets up the control box that originally rotates to open into the tilting buckle and opens, and the tilting buckle is opened simultaneously and has been avoided originally rotatory required space, better installation control box.

The working principle is as follows: the utility model relates to a variable air volume butterfly valve, when using, can effectively make things convenient for the installation of butterfly valve body 1 to dismantle through the mounting flange 17 that sets up in the front and back both sides of butterfly valve body 1, after installing butterfly valve body 1, gaseous from the mouthpiece 5 in the mouthpiece fixed pipe 4 of flow chamber 2, mouthpiece 5 adopts and connects in parallel to set up, and be provided with first gas pocket 15 and second gas pocket 16 in mouthpiece 5, first gas pocket 15 is perpendicular to butterfly valve body 1, second gas pocket 16 is on a parallel with butterfly valve body 1, gaseous pressure is produced in mouthpiece 5, first gas pocket 15 and second gas pocket 16 pass through the gas cock 6 that sets up in one side of the inboard of mouthpiece 5 and transmit, provide stable pressure state, gas cock 6 passes through trachea 7 and gas cock tee bend 8 and transmits gas to control box 14, measure the calculation through the control mainboard to gas pressure thereby obtain the pipeline velocity of flow, can connect in parallel a plurality of mouthpieces 5 according to the size of valve, every mouthpiece 5 is equipped with an air cock 6, air cock 6 is got pressure in each mouthpiece 5, finally collect and insert the control mainboard for 7 access control of trachea, thereby make the pressure that records more accurate, thereby obtain the flow data of high accuracy, thereby provide accurate flow information, the control mainboard can control executor 11 work, executor 11 work is controlled and is rotated 12 work, rotating device 12 work can drive valve rod 10 and carry out 0-90 degrees rotation, valve rod 10 rotates and drives the valve block 9 that sets up in adjusting chamber 2 and rotate, thereby the flow of regulating gas through butterfly valve body 1, convenient regulation, the control box lid 18 slope setting of setting, set up the control box that originally rotatory was opened into the tilting buckle and open, the required space of original rotation has been avoided to the tilting buckle opening simultaneously, better installation control box.

It is worth noting that: whole device realizes control to it through control box and control mainboard, because the equipment that control box and control mainboard match is equipment commonly used, belongs to current well-being technique, no longer gives unnecessary details its electric connection relation and specific circuit structure here.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a variable air volume butterfly valve which characterized in that: the butterfly valve comprises a butterfly valve body (1), a flow cavity (2) and an adjusting cavity (3), wherein the butterfly valve body (1) is integrally of a cuboid structure, the front portion of the butterfly valve body (1) is arranged to be the flow cavity (2), a nozzle fixing pipe (4) is installed in the flow cavity (2), nozzles (5) are symmetrically installed in the nozzle fixing pipe (4), air nozzles (6) are symmetrically arranged at the top end of the flow cavity (2), the air nozzles (6) are connected with the nozzles (5), the air nozzles (6) are connected with each other through air pipes (7) and air nozzle tee joints (8), the adjusting cavity (3) is arranged at the rear portion of the butterfly valve body (1), a valve block (9) is arranged at the middle portion of the adjusting cavity (3) in a leaning manner, the area of the valve block (9) is the same as the rectangular area of the inner diameter section of the butterfly valve body (1) at the position, valve rods, valve block (9) are connected with valve rod (10), install on rotating device (12) of executor (11) valve rod (10), executor (11) are fixed through executor mounting bracket (13) and are being adjusted chamber (3) lateral wall, butterfly valve body (1) lateral wall is provided with control box (14), air cock tee bend (8) are through trachea (7) connection control box (14), executor (11) are connected with control box (14).

2. The variable air volume butterfly valve of claim 1, wherein: be provided with a plurality of first gas holes (15) and a plurality of second gas hole (16) in mouthpiece (5), first gas hole (15) perpendicular to butterfly valve body (1), second gas hole (16) are on a parallel with butterfly valve body (1).

3. The variable air volume butterfly valve of claim 1, wherein: the air tap (6) is arranged on one side of the inner side of the nozzle (5).

4. The variable air volume butterfly valve of claim 1, wherein: the front side and the rear side of the butterfly valve body (1) are symmetrically provided with mounting flanges (17).

5. The variable air volume butterfly valve of claim 1, wherein: the section of the valve plate (9) is rectangular, and the valve plate (9) is of a split multi-blade structure.

6. The variable air volume butterfly valve of claim 1, wherein: the rotating angle of the rotating device (12) is 0-90 degrees.

7. The variable air volume butterfly valve of claim 1, wherein: the control box (14) is internally provided with a control main board, and the air pipe (7) and the actuator (11) are connected with the control main board.

8. The variable air volume butterfly valve of claim 1, wherein: the control box (14) is of a square structure, a control box cover (18) is obliquely arranged on the control box (14), and a buckle (19) is arranged at an opening at the front part of the control box cover (18).