CN215522073U - Three-way rotary wing valve - Google Patents

Abstract

The utility model discloses a three-way rotary wing valve, which comprises a rotary shaft and a three-way pipe connected to the rotary shaft; the three-way pipe comprises a double-flow-channel pipe body and a single-flow-channel pipe body, and the double-flow-channel pipe body and the single-flow-channel pipe body are connected through a valve body. The double-flow-passage pipe body comprises a first transfer pipe and second transfer pipes which are rotationally connected with the first transfer pipe and are mutually communicated; the air guide pipe is fixedly connected with the rotating shaft; the upper part of the inner connecting pipe is contained in the first transfer pipe, and the lower part of the inner connecting pipe is contained in the second transfer pipe; a through hole extends outwards from the inner connecting pipe, and the inner connecting pipe penetrates through and is led out of the pipe wall of the second transit pipe; the single-channel pipe body comprises an air receiving pipe fixedly connected with the rotating shaft and a discharge pipe rotatably connected with the air receiving pipe. The three-way pipe is matched with the rotatable valve body, so that the structure design is reasonable, and the stability of the flow field in the valve body can be kept under the rotating state.

Description

Three-way rotary wing valve

Technical Field

The utility model relates to the field of fluid valves, in particular to a three-way rotary wing valve.

Background

In some application scenarios, the annular array has a plurality of flow channels, a valve structure is required to be used for individual interception, and the intercepted flow channels are processed (including air draft and air supply);

therefore, a set of three-way rotary wing valves needs to be developed, which can rotate without affecting the transportation of the flow channel in the valve body.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a three-way rotary wing valve.

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

the three-way rotary wing valve comprises a rotary shaft and a three-way pipe connected to the rotary shaft;

the three-way pipe comprises a double-flow-channel pipe body and a single-flow-channel pipe body, and the double-flow-channel pipe body and the single-flow-channel pipe body are connected through a valve body.

The double-flow-passage pipe body comprises a first transfer pipe and second transfer pipes which are rotationally connected with the first transfer pipe and are mutually communicated;

the air guide pipe is fixedly connected with the rotating shaft; the upper part of the inner connecting pipe is contained in the first transfer pipe, and the lower part of the inner connecting pipe is contained in the second transfer pipe; a through hole extends outwards from the inner connecting pipe, and the inner connecting pipe penetrates through and is led out of the pipe wall of the second transit pipe;

the single-channel pipe body comprises an air receiving pipe fixedly connected with the rotating shaft and a discharge pipe rotatably connected with the air receiving pipe.

Preferably, the valve body comprises a first valve body and a second valve body;

a flow passage of the first valve body passes through the first transit pipe and the second transit pipe to a valve cavity of the first valve body and then passes through the gas collecting pipe and the discharge pipe;

the flow passage of the second valve body passes through the air duct, the inner connecting pipe and the valve cavity of the second valve body.

Preferably, the valve cavities of the first valve body and the second valve body are formed by enclosing an air box, the air box structurally comprises a box cover and a flexible connecting body which is connected to the edge of the box cover in a sealing mode, extends downwards and is provided with openings at the upper part and the lower part, and a support is fixedly connected to the outer edge of the lower opening of the flexible connecting body; an oil cylinder (55) is fixedly arranged on the upper end face of the box cover, and the driving end of the oil cylinder (55) is positioned in the box cover (51) and is fixedly connected with the bracket (54).

Preferably, the first valve body is composed of an upper air box and a lower air box, the upper air box is connected with the second transfer pipe, and the lower air box is connected with the air receiving pipe.

Preferably, the second valve body is composed of an extension bellows, which is connected to the inner nipple.

Compared with the prior art, the utility model has the beneficial effects that: the three-way pipe is matched with the rotatable valve body, the structural design is reasonable, and the stability of the flow field in the valve body can be kept under the rotation state.

Drawings

Fig. 1 is a schematic view of an overall process flow of an application scenario according to an embodiment of the present invention.

FIG. 2 is a schematic view of the overall structure of the adsorption column of the present invention.

FIG. 3 is a schematic view of the internal structure of an adsorption column of the present invention.

Fig. 4 is a schematic top view of fig. 3.

FIG. 5 is a schematic view of the structure of the adsorption small unit of the present invention.

FIG. 6 is a schematic view of the structure of the bellows of the present invention.

Fig. 7 is a schematic side sectional view of fig. 6.

FIG. 8 is a schematic view of the structure of the circulation mechanism of the present invention.

Fig. 9 is an exploded view of the air intake duct body of the present invention.

Fig. 10 is a cross-sectional view of the assembled state of fig. 9.

Fig. 11 is a schematic view of an air outlet pipe structure.

Detailed Description

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

Example (b): in this embodiment, a specific application scenario is taken as an example, and the application scenario is shown in fig. 1, which is based on an adsorption tower that adsorbs VOC in exhaust gas.

Referring to fig. 1, the apparatus includes an adsorption turret 1 and a desorption apparatus 10 connected to the adsorption turret 1 (the desorption apparatus 10 in this embodiment is used for conveying a desorption medium to the adsorption turret 1 for desorption, and mainly includes a fan and a hot air heater). The principle of hot air desorption is used in the present embodiment, and the scope of the present embodiment is not limited.

The structure of the adsorption brick tower 1 is shown in fig. 2, and comprises a tower body 14 with an adsorption cavity arranged therein and an adsorbent 6 positioned in the adsorption cavity; an air inlet 11 and an air outlet 12 on the tower body 14 are communicated with the adsorption cavity, and waste gas enters from the air inlet 11, is adsorbed by the adsorbent 6 and then is discharged from the air outlet 12. In addition, a maintenance platform 13 is installed outside the tower body 14.

Specifically, the absorber 6 is divided into a plurality of units, and the structure of the reference adsorption cavity is specifically divided, and the adsorption cavity is cylindrical in this embodiment, so that the absorber 6 is equally divided into a plurality of small fan-shaped units (see fig. 3); the structure of the adsorption small unit 61 is as follows with reference to fig. 5: comprises a grid 611 and a steel wire mesh 612 covering the grid 611, and an adsorbing material (such as activated carbon) is encapsulated in the grid 611 by the steel wire mesh 612. Further, as shown in the figure, each small adsorption unit 61 is penetrated from top to bottom, and is surrounded by relatively closed grating plates on both sides, and the exhaust gas is transported from bottom to top and is subjected to adsorption treatment by the adsorption material.

When in use, the single small adsorption unit 61 is blocked and can be independently replaced.

And a circulating mechanism is also arranged in the adsorption inner cavity and used for circularly desorbing each small adsorption unit 61.

Specifically, the desorption device 10 circularly conveys hot air into each small adsorption unit 61 through the circulation mechanism for desorption operation, and conveys out the desorbed VOC through the circulation mechanism;

the principle of the circulating mechanism is that an openable/closable valve body structure is arranged, the valve body is used for accommodating at least one small adsorption unit 61, and when the valve body is opened, the small adsorption unit 61 in the valve body is communicated with an adsorption inner cavity, so that the adsorption function of the valve body is not influenced. When the valve body was closed, the absorption subelement 61 and the absorption inner chamber in it were kept apart, and circulation mechanism passes through the pipeline and introduces desorption apparatus 10's hot-blast in the valve body this moment, carries out desorption work to absorption subelement 61 in it, and the concentrated VOC who recycles this pipeline under with the desorption takes away from absorption capstan head 1.

In order to cyclically perform the desorption operation on each of the adsorbents 6, it is necessary that the valve body structure of the circulation mechanism is designed to be movable, and the moving path thereof coincides with the arrangement path of the adsorption small units 61.

In the present embodiment, referring to fig. 3, in order to ensure the compactness of the device and the stability of the operation, the small adsorption units 61 are designed into a fan shape and distributed in a central array form to form a complete circular structure. Therefore, the valve body structure is arranged in the fan-shaped area, and the valve body structure is kept to rotate around the symmetrical center of the small adsorption units 61, so that the desorption operation can be cyclically performed on each small adsorption unit 61.

Specifically, referring to fig. 3 and 4, the valve body structures in the figures are the desorption upper air box 5 and the desorption lower air box 7 (adapted to the structure of the small adsorption unit 61, the valve body has an upper and lower structure to seal the upper and lower flow passages of the small adsorption unit), the desorption upper air box 5 and the desorption lower air box 7 rotate by a motor drive, and the axis of the rotation shaft is collinear with the axis of the entire cylindrical desorption body 6.

In order to ensure the sealing performance in the desorption operation state (i.e. the valve body structure is closed), the bellows 5 is taken as an example and is shown in fig. 6 or 7, and includes a case cover 51 and a flexible connecting body 53 (such as plastic cloth) which is connected to the edge of the case cover 51 in a sealing manner, extends downwards and is open at the upper and lower parts, and a bracket 54 is fixedly connected to the outer edge of the lower opening of the flexible connecting body 53; referring to fig. 7, an oil cylinder 55 is fixedly attached to an upper end surface of the case cover 51, and a driving end of the oil cylinder 55 is positioned in the case cover 51 and fixedly connected to the bracket 54. The outside fixed mounting of case lid 51 has a backup pad 511, and the pulley is installed to the bottom of backup pad, and during the installation, establishes a support step on the tower body, and the pulley is arranged in on the step, plays the effect of support.

In order to standardize parts of each part, the structure of the lower wind box 7 is the same as that of the upper wind box 5 (can be regarded as an inverted upper wind box 5). When the valve body structure is in a sealed state, the oil cylinder 55 makes the bracket 34 in a sealing and abutting state at the upper end edge position of the small adsorption unit 61 (here, in order to improve stability and sealing performance, adaptive processing can be performed on the structure, such as setting a lip structure matched with the bracket 34, so that the bracket 34 can be inserted into the lip structure to realize sealing); the lower bellows is also the same, and the support is sealed and abutted at the lower end edge position of the small adsorption unit 61 by the oil cylinder. The upper air box 5 and the lower air box 7 are sealed at the same time, so that the small adsorption units 61 are ensured to be relatively independent from the flow field of the waste gas.

After the sealing problem is solved, how to introduce hot air into the small adsorption unit accommodated in the valve body structure needs to be further considered. In the present embodiment, a desorption gas system is designed,

because the valve body structure is movable, the desorption gas system has two design ideas, namely, the desorption gas system can move adaptively along with the valve body, for example, a telescopic hose or a follow-up pipeline is adopted;

in order to ensure the stability of operation and the compactness of the structure, and further ensure the sealing property between the whole desorption gas system and the exhaust gas flow field in the turret 1, the following design is carried out:

specifically, referring to fig. 3, the valve body is fixed to the rotating shaft and driven by the motor to rotate. In the present embodiment, the desorption gas system is designed by combining it with the rotating shaft. As shown in the figure, the desorption gas system comprises a gas inlet pipe body 3 and a gas outlet pipe body 2;

further, the structure of the air inlet pipe body 3 is shown in fig. 9 and fig. 10, where 8 marked in the middle of the drawing is the rotating shaft drivingly connected with the motor; the air inlet pipe body 3 comprises a first transit pipe 36 and a second transit pipe 38 which is rotatably connected with the first transit pipe 36; as can be seen from fig. 8, the upper air box 5 is also fixed to the outer wall of the second intermediate transfer pipe 38 (both rotate together, and the first intermediate transfer pipe 36 is connected to the desorption device 10 outside the tower body and therefore cannot rotate), and the polling desorption operation is performed on the small adsorption unit 61.

Referring to fig. 9 and 10, an opening B communicated with an inner cavity of the first transit pipe 36 is formed in an outer wall of the first transit pipe, and the opening B is connected with the hot air input pipe 32; an opening D communicating with an inner cavity of the second transit pipe 38 is formed in an outer wall thereof, and the opening D is input into the valve body structure through a hot air delivery pipe 33 (as shown in fig. 8, the hot air delivery pipe 33 is directly connected to the upper wind box 5).

After the hot air is input, the desorbed VOC needs to be discharged through the outlet pipe body 2 along with the hot air, and as shown in fig. 3 and fig. 8, in order to ensure the reasonability of the spatial distribution of the whole equipment, the outlet pipe body 2 is distributed below the inlet pipe body 3 along the rotating shaft 8 and is connected with the lower air box 7.

Specifically, referring to fig. 11, the air receiving tube 22 is fixedly connected to the rotating shaft 8, an opening E communicated with an inner cavity of the air receiving tube 22 is formed in a tube wall of the air receiving tube 22, and the opening E is connected to and communicated with the lower air box 7. The bottom of the air receiving pipe 22 is rotatably connected with a discharge pipe 23, and the discharge pipe 23 is also rotatably connected with the rotating shaft 8. The joint between the two can be sleeved with a bearing to reduce friction. The inner cavity of the air collecting pipe 22 is communicated with the inner cavity of the discharge pipe 23, and a plurality of ventilation holes are arranged on the same plane of the air collecting pipe and the discharge pipe to play a role in stabilizing the flow. An opening F communicated with the inner cavity of the discharge pipe 23 is arranged on the outer wall of the discharge pipe, and the opening F is externally connected with the discharge pipe body 21.

In summary, referring to fig. 1 again, the desorption device 10 delivers hot air into the closed valve structure through the hot air input pipe 32 and the hot air delivery pipe 33, and the VOC in the adsorption cells 61 in the desorption device is taken away by the hot air and enters the air receiving pipe 22 through the lower air box 7, and then enters the discharge pipe 23, collected together, and finally discharged after being incinerated.

After the desorption is completed, the hot air is turned off, the valve body structure is opened (i.e. the oil cylinder 55 lifts the support 34), the rotating shaft 8 rotates, the desorbed small adsorption unit 61 is released, and the desorption operation is performed on the next small adsorption unit.

The small adsorption unit which has completed desorption is contacted with the waste gas in the tower to perform adsorption again after being released, but because of the hot air exchange performed during desorption, the small adsorption unit still has a certain temperature, which affects the adsorption efficiency, and on the basis, the cooling unit is designed in the embodiment.

Referring to fig. 3 and 4, taking the two figures as examples, the valve body structures (i.e. the upper wind box 5 and the lower wind box 7) perform round-robin desorption on the small adsorption units 61 counterclockwise; the cooling unit is configured to poll for cooling in conjunction with the valve body. In order to reduce the cooling time to the cooling unit after desorption, the cooling unit is disposed directly behind the valve body structure (the expansion bellows 4 in the figure is the cooling unit).

The construction of the expansion bellows 4 itself is identical to that of the bellows 5 described above and can be seen with reference to fig. 6 and 7. In conclusion, the structures of the three air boxes are consistent, and the large-scale production is realized. Standard part processing can be formed, the complexity of the structure is simplified to a certain extent, and the production time and cost are reduced.

It should be noted here that, unlike the valve body structure, the requirement of the cooling unit on the sealing performance is not high, so the extension bellows 4 only needs to be provided at the output end of the small suction unit 61 (i.e., at the top end of the small suction unit). The cooling principle of the cooling unit is that the temperature of the small adsorption unit 61 immediately after the desorption operation is taken away by the input exhaust gas (the temperature of the exhaust gas is relatively low), and in order to prevent heat diffusion, an extension bellows 4 is provided at the top of the small adsorption unit 61, and the extension bellows 4 performs an air suction operation on the small adsorption unit 61, and the bellows body performs an air guide function, so that sealing as in a valve body structure is not required.

The gas sucked out by the expansion bellows 4 enters the desorption device 10 to be heated, and then is used as desorption hot air and transmitted into the valve body structure.

In summary, the cooling unit and the valve body structure have functional cooperativity, so in order to realize the synchronism of the cooling unit and the valve body structure, a cooling exhaust system combined with a desorption gas system is designed;

referring to fig. 8-10, in particular, the cooling and ventilating system is combined with the air intake pipe body 3, and includes an air duct 35 coaxially and fixedly installed at the upper end of a first transit pipe 36, and an inner connecting pipe 37 fixedly connected with a second transit pipe 38; the upper portion of the inner joint pipe 37 is accommodated in the first transit pipe 36, the lower portion is accommodated in the second transit pipe 38, and the inner joint pipe 37 is not communicated with both the first transit pipe 36 and the second transit pipe 38; referring to fig. 9 and 10, the inner connecting tube 37 is connected to the air duct 35 through a ventilation hole formed in an upper end surface thereof, and the inner connecting tube 37 is rotatably connected to the air duct 35.

An opening A communicated with the inner cavity of the air duct 35 is formed in the outer wall of the air duct, and the opening A is connected with a cold air output pipe 31 to the inside of the desorption device; an opening C communicating with an inner cavity of the inner pipe 37 is provided on an outer wall of the inner pipe 37, and the opening C is penetrated by the inner pipe 37 and extends to the outside of a pipe wall of the second intermediate pipe 38 (see fig. 10), and the opening C is connected to the expansion air box 4 through the cooling air pipe 34.

In summary, referring to fig. 10 in conjunction with the air inlet pipe body 3, the symbol line I in the figure indicates a flow path of the cold air, which is input from the expansion air box 4 to the inner connecting pipe 37 through the opening C, then enters the air duct 35, and finally is output from the opening a; the heated gas is delivered into the desorption device 10, and then delivered into the first transit pipe 36 through the opening B, and then delivered into the second transit pipe 38, and then delivered into the valve body structure through the opening D (indicated by II in the figure).

Referring to fig. 10, the second intermediate transfer pipe 38 and the inner transfer pipe 37 are driven by the rotation shaft 8 to be rotatable, thereby realizing a polling function without affecting the flow transmission during rotation.

In summary, the valve body structure and the cooling unit are the three-way rotary wing valve of the present application.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (5)

1. Three-way rotary wing valve, its characterized in that: comprises a rotating shaft (8) and a three-way pipe connected to the rotating shaft (8);

the three-way pipe comprises a double-flow pipe body and a single-flow pipe body, and the double-flow pipe body and the single-flow pipe body are connected through a valve body;

the double-flow-passage pipe body comprises a first transit pipe (36) and a second transit pipe (38) which is rotationally connected with the first transit pipe (36) and is communicated with the first transit pipe;

the device also comprises an inner connecting pipe (37) fixedly connected with the rotating shaft (8) and an air duct (35) rotatably connected with the inner connecting pipe (37); the upper part of the inner connecting pipe (37) is contained in the first transit pipe (36), and the lower part is contained in the second transit pipe (38); the inner connecting pipe (37) extends out of a through hole outwards, penetrates through the pipe wall of the second transit pipe (38) and is led out of the pipe wall;

the single-channel pipe body comprises an air collecting pipe (22) fixedly connected with the rotating shaft (8) and a discharge pipe (23) rotatably connected with the air collecting pipe (22).

2. The three-way rotary wing valve of claim 1, wherein: the valve body comprises a first valve body and a second valve body;

the flow passage of the first valve body passes through a first transit pipe (36) and a second transit pipe (38) to the valve cavity of the first valve body and then passes through an air receiving pipe (22) and a discharge pipe (23);

the flow passage of the second valve body passes through the air duct (35), the inner connecting pipe (37) and the valve cavity of the second valve body.

3. The three-way rotary wing valve of claim 2, wherein: the valve cavities of the first valve body and the second valve body are formed by enclosing an air box, the air box structurally comprises a box cover (51) and a flexible connecting body (53) which is connected to the edge of the box cover (51) in a sealing mode, extends downwards and is provided with openings at the upper and lower parts, and a support (54) is fixedly connected to the outer edge of the lower opening of the flexible connecting body (53); the upper end face of the box cover (51) is fixedly provided with a driver, and the driving end of the driver is positioned in the box cover (51) and is fixedly connected with the bracket (54).

4. The three-way rotary wing valve of claim 3, wherein: the first valve body is composed of an upper air box (5) and a lower air box (7), the upper air box (5) is connected with a second transit pipe (38), and the lower air box (7) is connected with an air receiving pipe (22).

5. The three-way rotary wing valve of claim 4, wherein: the second valve body consists of an expansion bellows (4), and the expansion bellows (4) is connected with an inner connecting pipe (37).

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