CN219317200U

CN219317200U - Cooling structure of double-stage Roots blower

Info

Publication number: CN219317200U
Application number: CN202320556476.8U
Authority: CN
Inventors: 陈明松; 安伟杰; 谢雨晓
Original assignee: Zhejiang Zhenglin Machinery Manufacturing Co ltd
Current assignee: Zhejiang Zhenglin Machinery Manufacturing Co ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-07-07
Anticipated expiration: 2033-03-21

Abstract

The utility model relates to the technical field of gas conveying, in particular to a cooling structure of a two-stage Roots blower, which comprises a cooling device, wherein the cooling device comprises a box body and a plurality of star-shaped fin heat-conducting pipes arranged in the box body, the star-shaped fin heat-conducting pipes are sequentially connected into an S shape through a plurality of air ducts, and an extension mounting interface is arranged at the pipe orifice of each of the two star-shaped fin heat-conducting pipes with the farthest relative distance away from the air duct; the extension mounting interfaces arranged at two ends of the cooling device are respectively connected with a first-stage Roots blower and a second-stage Roots blower through gas pipes, a group of same three-blade rotors are arranged inside the first-stage Roots blower and the second-stage Roots blower, and the cooling device is filled with fluorinated liquid. The utility model can realize the function of cooling the high-temperature gas in the transmission process.

Description

Cooling structure of double-stage Roots blower

Technical Field

The utility model relates to the technical field of gas conveying, in particular to a cooling structure of a double-stage Roots blower.

Background

The three-blade Roots blower is mainly used for pneumatic conveying systems in the fields of ceramics, building materials, papermaking, smelting, electric power industry, petrochemical industry, textile, chemical fertilizer, mines, ports, aquaculture, sewage treatment, food, environmental protection industry and the like, and is used for conveying air and various neutral gases, but is not suitable for conveying flammable, explosive, toxic and highly corrosive gases.

With the progress of scientific technology, the types of blowers are more and more, such as a double-stage Roots blower, and compared with the traditional single-stage Roots blower, the efficiency of the double-stage Roots blower is greatly improved, however, the double-stage Roots blower also faces the problem of overhigh temperature in the gas transmission process, and faults caused by exceeding the highest temperature born by the blower are easy to occur.

The patent of publication number CN106286308B discloses a gaseous heat sink of doublestage Roots blower, including Roots blower and heat sink, the Roots blower includes first order Roots blower and second level Roots blower, and heat sink is installed to the centre of first order Roots blower and second level Roots blower, and heat sink includes mounting box, first heat sink and second heat sink, and first heat sink includes gas receiver, cooling chamber, gas transportation pipe and isolation layer, and the second heat sink includes water tank and water pipe. The gas cooling device of the double-stage Roots blower can quickly cool through cooling liquid and flowing water in the water pipe.

Although the problem that the temperature of the two-stage Roots blower is too high in the gas transmission process is solved by the scheme, the two-stage Roots blower is simple in structure and low in efficiency, and the temperature reduction effect is not ideal due to the fact that the gas temperature reduction path is short and uneven heat dissipation is easy to occur. In view of this, we propose a cooling structure of a dual stage Roots blower.

Disclosure of Invention

The utility model aims to provide a cooling structure of a double-stage Roots blower, which aims to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the cooling structure of the double-stage Roots blower comprises a cooling device arranged between the first-stage Roots blower and the second-stage Roots blower, wherein the cooling device comprises a box body and a plurality of star-shaped fin heat-conducting pipes arranged in the box body, the star-shaped fin heat-conducting pipes are vertically communicated, a plurality of star-shaped fin heat-conducting pipes are sequentially connected into an S shape through a plurality of air ducts, two ends of each air duct are respectively connected with the same side pipe openings of two adjacent star-shaped fin heat-conducting pipes, and the pipe openings of the two star-shaped fin heat-conducting pipes with the farthest relative distance away from the air ducts are all provided with extension mounting interfaces; install two at cooling device both ends extend the installation interface pass through the gas-supply pipe respectively with one-level roots blower with the second grade roots blower is connected, one-level roots blower with the three leaf rotors are all installed to the inside three leaf rotors of second grade roots blower, the inside fluorinated solution that fills of cooling device has, fluorinated solution has outstanding heat conductivity, heat stability, chemical stability, can not cause the destruction to material surfaces such as plastics, resin, metal to can distill the regeneration, repeatedly usable, reduce cost.

Preferably, the box body is rectangular, the height of the box body is equal to the height of the star-shaped fin heat conduction pipe, the width of the box body is equal to the maximum outer diameter of the star-shaped fin heat conduction pipe, the compression space reduces the capacity of the fluorinated liquid in the box body, and the control and the saving of cost are realized.

Preferably, the size of the air duct is matched with that of the connecting end pipe orifice of the star-shaped fin heat-conducting pipe, two connecting ports at two ends of the air duct are respectively communicated with the connecting end pipe orifices at the same side of two adjacent star-shaped fin heat-conducting pipes, the air duct and the star-shaped fin heat-conducting pipes are all made of aluminum alloy materials, and the metal has the physical characteristics of high heat conducting efficiency, corrosion resistance and difficult rust.

Preferably, the star-shaped fin heat conduction pipe is composed of a heat conduction pipe in the middle and a plurality of star-shaped fins which are arranged on the outer wall of the heat conduction pipe in a radiation and dispersion mode, the heat dissipation area of the mechanism is increased, and therefore the heat dissipation efficiency of the cooling device is further improved.

Preferably, the top surface and the bottom surface of the box body are provided with a plurality of through holes for accommodating the heat conduction pipe to pass through, and a rubber ring for improving the sealing performance is arranged between the heat conduction pipe and the inner wall of the through hole, so that the sealing performance of the box body is improved, and the leakage of the fluorinated liquid is prevented.

Preferably, the bottom and the top of the first-stage Roots blower are respectively provided with a first-stage air inlet and a first-stage air outlet, the top and the bottom of the second-stage Roots blower are respectively provided with a second-stage air inlet and a second-stage air outlet, and the air enters from the first-stage air inlet and passes through the cooling device and is finally discharged from the second-stage air outlet.

Preferably, three blades of the three-blade rotor are staggered, the three-blade rotor is installed in the first-stage Roots blower and the three-blade rotor installed in the second-stage Roots blower are opposite in direction, a part of a dense chamber is formed in the first-stage Roots blower/the second-stage Roots blower by the three-blade rotor, and the three-blade rotor rotates to drive gas in the dense chamber to enter the next working procedure.

Compared with the prior art, the utility model has the beneficial effects that:

according to the cooling structure of the double-stage Roots blower, gas can be quickly and effectively cooled through the fluoride liquid filled in the cooling device and the star-shaped fin heat conduction pipe with the extremely large heat dissipation area; the fluoridized liquid has excellent thermal conductivity, thermal stability and chemical stability, can not damage the surfaces of materials such as plastics, resins and metals, can be distilled for regeneration, can be used repeatedly, and has the advantages of low cost, compact and reasonable mechanical structure design, low production cost, and no potential safety hazard.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the utility model;

FIG. 2 is a schematic diagram of the structure of the utility model;

FIG. 3 is a schematic diagram of the structure of the utility model;

in the figure: 1. a cooling device; 11. a case; 2. star-fin heat conduction pipes; 21. a heat conduction pipe; 22. star-shaped fins; 3. an air duct; 4. extending the mounting interface; 5. a gas pipe; 6. a first stage Roots blower; 61. a primary air inlet; 62. a first-stage air outlet; 7. a secondary Roots blower; 71. a secondary air inlet; 72. a second-stage air outlet; 8. a three-bladed rotor; 9. and (3) a fluoridation liquid.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present embodiment provides a technical solution:

the cooling structure of the double-stage Roots blower comprises a cooling device 1 arranged between a first-stage Roots blower 6 and a second-stage Roots blower 7, wherein the cooling device 1 comprises a box 11 and a plurality of star-shaped fin heat-conducting pipes 2 arranged in the box 11, the star-shaped fin heat-conducting pipes 2 are vertically communicated, the plurality of star-shaped fin heat-conducting pipes 2 are sequentially connected into an S shape through a plurality of air ducts 3, two ends of each air duct 3 are respectively connected with the same side pipe openings of two adjacent star-shaped fin heat-conducting pipes 2, and the pipe openings of the two star-shaped fin heat-conducting pipes 2 with the farthest relative distance away from the air ducts 3 are respectively provided with an extension installation interface 4; install two extension installation interfaces 4 at cooling device 1 both ends and be connected with first order roots blower 6 and second grade roots blower 7 respectively through gas-supply pipe 5, three leaf rotors 8 are all installed to inside of first order roots blower 6 and the second grade roots blower 7, and cooling device 1 is inside to be annotated to have fluorinated liquid 9, and fluorinated liquid 9 has outstanding heat conductivity, heat stability, chemical stability, can not cause destruction to material surfaces such as plastics, resin, metal to can distill the regeneration, repeatedly usable, reduce cost.

Further, the box 11 is rectangular, the height of the box 11 is equal to that of the star-shaped fin heat-conducting tube 2, the width of the box 11 is equal to the maximum outer diameter of the star-shaped fin heat-conducting tube 2, the compression space reduces the capacity of the internal fluorinated liquid, and the control and the saving of cost are realized.

Further, the size of the pipe orifice of the connecting end of the air duct 3 and the size of the pipe orifices of the connecting ends of the star-shaped fin heat-conducting pipes 2 are matched, the connecting ports at the two ends of the air duct 3 are respectively communicated with the pipe orifices of the connecting ends at the same side of the adjacent two star-shaped fin heat-conducting pipes 2, the air duct 3 and the star-shaped fin heat-conducting pipes 2 are made of aluminum alloy materials, and the metal has the physical characteristics of high heat conducting efficiency, corrosion resistance and difficult rust resistance.

Further, the star-shaped fin heat conduction pipe 2 is composed of a heat conduction pipe 21 in the middle and a plurality of star-shaped fins 22 which are arranged on the outer wall of the heat conduction pipe 21 in a radiation and dispersion mode, and the heat dissipation area of the mechanism is increased, so that the heat dissipation efficiency of the cooling device is further improved.

Further, the top surface and the bottom surface of the box 11 are provided with a plurality of through holes for accommodating the heat pipe 21, and rubber rings for improving the sealing performance are arranged between the heat pipe 21 and the inner wall of the through holes, so that the sealing performance of the box can be improved, and the leakage of the fluorinated liquid is prevented.

Further, a first-stage air inlet 61 and a first-stage air outlet 62 are respectively formed in the bottom and the top of the first-stage Roots blower 6, a second-stage air inlet 71 and a second-stage air outlet 72 are respectively formed in the top and the bottom of the second-stage Roots blower 7, and air enters the cooling device 1 through the first-stage air inlet 61 and is finally discharged through the second-stage air outlet 72.

In addition, three blades of the three-blade rotor 8 are staggered, the three-blade rotor 8 is installed in the first-stage Roots blower 6 and the three-blade rotor 8 installed in the second-stage Roots blower 7 are opposite in steering, the three-blade rotor 8 forms a part of dense chamber in the first-stage Roots blower 6/the second-stage Roots blower 7, and the three-blade rotor 8 rotates to drive gas in the dense chamber to enter the next working procedure.

When the cooling structure of the double-stage Roots blower is used, a group of three-blade rotors 8 arranged in the first-stage Roots blower 6 are staggered, a part of dense chambers are formed in the first-stage Roots blower 6 between the two three-blade rotors 8, gas is sucked through a first-stage gas inlet 61 and discharged through a first-stage gas outlet 62 along with the continuous rotation of the three-blade rotors 8, and the gas passes through a gas pipe 5 to reach an extension mounting interface 4 arranged at one end of the cooling device 1, so that the temperature of the gas is increased due to the high-speed gas conveying; the high-temperature gas enters the star-shaped fin heat-conducting pipe 2 through the extending installation interface 4, the star-shaped fins 22 arranged on the outer wall of the heat-conducting pipe 21 in a dispersing way are immersed in the fluorinated liquid 9 in the box 11, when the high-temperature gas passes through the star-shaped fin heat-conducting pipe 2, the heat of the high-temperature gas is conducted into the fluorinated liquid 9 through the star-shaped fins 22, the high-temperature gas which is continuously cooled is finally discharged through the extending installation interface at the other end of the cooling device 1 and enters the second Roots blower 7 through the second air inlet 71, the rotation direction of the three-blade rotor 8 in the second Roots blower 7 is opposite to the rotation direction of the three-blade rotor 8 in the first Roots blower, and finally the cooled gas is discharged through the second air outlet 72 to enter the next production process.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are only preferred embodiments of the present utility model, and are not intended to limit the utility model, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cooling structure of doublestage roots blower, includes cooling device (1) of installing between one-level roots blower (6) and second grade roots blower (7), its characterized in that: the cooling device (1) comprises a box body (11) and a plurality of star-shaped fin heat conduction pipes (2) arranged in the box body (11), wherein the star-shaped fin heat conduction pipes (2) are vertically communicated, the star-shaped fin heat conduction pipes (2) are sequentially connected into an S shape through a plurality of air ducts (3), two ends of each air duct (3) are respectively connected with the same side pipe openings of two adjacent star-shaped fin heat conduction pipes (2), and the pipe openings of the two star-shaped fin heat conduction pipes (2) with the farthest relative distances are far away from the air ducts (3) and are provided with extension mounting interfaces (4); install two at cooling device (1) both ends extend installation interface (4) through gas-supply pipe (5) respectively with one-level roots blower (6) with second grade roots blower (7) are connected, one-level roots blower (6) with three leaf rotors (8) are all installed to second grade roots blower (7) inside, the inside filling of cooling device (1) has fluoride liquid (9).

2. The cooling structure of the dual stage Roots blower according to claim 1, wherein: the appearance of box (11) is the cuboid, the interior height of box (11) with the height of star fin heat pipe (2) equals, the interior width of box (11) equals the biggest external diameter of star fin heat pipe (2).

3. The cooling structure of the dual stage Roots blower according to claim 1, wherein: the size of the connecting end pipe orifice of the air duct (3) is matched with that of the connecting end pipe orifice of the star-shaped fin heat-conducting pipe (2), two connecting ports at the two ends of the air duct (3) are respectively communicated with the same-side connecting end pipe orifices of the adjacent two star-shaped fin heat-conducting pipes (2), and the air duct (3) and the star-shaped fin heat-conducting pipes (2) are all made of aluminum alloy materials.

4. The cooling structure of the dual stage Roots blower according to claim 1, wherein: the star-shaped fin heat conduction pipe (2) consists of a heat conduction pipe (21) in the middle and a plurality of star-shaped fins (22) which are arranged on the outer wall of the heat conduction pipe (21) in a radiation and dispersion mode.

5. The cooling structure of the dual stage Roots blower according to claim 1, wherein: the top surface and the bottom surface of box (11) all have seted up a plurality of and are used for holding heat conduction pipe (21) pass the through-hole, heat conduction pipe (21) with install the rubber circle that is used for improving the leakproofness between the through-hole inner wall.

6. The cooling structure of the dual stage Roots blower according to claim 1, wherein: the bottom and the top of the first-stage Roots blower (6) are respectively provided with a first-stage air inlet (61) and a first-stage air outlet (62), and the top and the bottom of the second-stage Roots blower (7) are respectively provided with a second-stage air inlet (71) and a second-stage air outlet (72).

7. The cooling structure of the dual stage Roots blower according to claim 1, wherein: three blades of the three-blade rotor (8) are staggered, and the direction of rotation of the three-blade rotor (8) installed in the primary Roots blower (6) is opposite to that of the three-blade rotor (8) installed in the secondary Roots blower (7).