CN213669305U - Double-pass spiral band heat transfer stirrer - Google Patents

Abstract

The utility model discloses a double-pass spiral belt heat transfer stirrer, which comprises a speed reducer, wherein a frame is fixedly installed at the bottom of the speed reducer, a first stirring shaft is rotatably installed inside the speed reducer, the first stirring shaft and an output shaft of the speed reducer are integrally formed, the first stirring shaft is formed by sleeving three layers of steel pipes, the upper end of the first stirring shaft penetrates through the speed reducer and is fixedly provided with a fixing ring, a rotary joint is fixedly installed on the upper side of the fixing ring, and a heating box is sleeved outside the rotary joint; first (mixing) shaft lower extreme fixed mounting has the second (mixing) shaft, the second (mixing) shaft adopts double-deck steel pipe to cup joint and forms, second (mixing) shaft outside fixed mounting has the agitator, the utility model relates to a chemical industry agitated vessel field utilizes the surface of agitator and (mixing) shaft to conduct heat for the temperature of material is more even in the cauldron.

Description

Double-pass spiral band heat transfer stirrer

The technical field is as follows:

the utility model relates to a chemical industry agitated vessel field, concretely relates to double-pass spiral shell area heat transfer agitator.

Background art:

in current chemical industry agitated vessel, can leading-in abundant heat in guaranteeing reation kettle, generally adopt the outer cover of adding or add and establish interior coil pipe heat transfer, traditional heat transfer mode all has the shortcoming that is showing. When the external sleeve is adopted for heating, the heat transfer effect is poor because the heat exchange area is small and the heat transfer element is positioned on the outer wall of the reaction kettle. When the interior coil pipe conducts heat, the complexity of components in the kettle can be increased, and some inlet and outlet interfaces for reserving heat-conducting media on the stirring kettle are needed, so that the design difficulty of the reaction kettle is increased, and when the thermal expansion of reaction liquid is large, the interior coil pipe needs to be fixed by adopting a more complex structure. In addition, when the internal space of the reaction kettle is limited, no space is provided for arranging heat transfer components in the kettle, such as the inner coil and the like, and even if the heat transfer components are added, the space is limited because of too many components in the kettle, so that the internal part of the reaction kettle cannot be cleaned. If the reaction liquid is frequently replaced, a great extra cost is added.

The utility model has the following contents:

to the problem among the prior art, the utility model aims to provide a two-way spiral shell area heat transfer agitator.

The utility model discloses the technical problem that will solve adopts following technical scheme to realize: a double-pass spiral belt heat transfer stirrer comprises a speed reducer, wherein a rack is fixedly mounted at the bottom of the speed reducer, a first stirring shaft is rotatably mounted in the speed reducer, the first stirring shaft and an output shaft of the speed reducer are integrally formed, the first stirring shaft is formed by sleeving three layers of steel pipes, the steel pipe at the innermost layer serves as a first water inlet pipe, a gap between a middle steel pipe and an inner side steel pipe serves as a first water return pipe, a heat insulation layer is filled between the middle steel pipe and an outer side steel pipe, the heat insulation layer can be filled with heat insulation materials, and heat insulation paint can be smeared on the side wall;

the upper end of the first stirring shaft penetrates through the speed reducer and is fixedly provided with a fixing ring, a rotary joint is fixedly arranged on the upper side of the fixing ring, and a heating box is sleeved on the outer side of the rotary joint;

the lower end of the first stirring shaft penetrates through the rack and is rotatably connected with the rack, a first mounting flange is fixedly mounted at the bottom end of the first stirring shaft, a second stirring shaft is fixedly mounted at the lower end of the first stirring shaft, a second mounting flange is fixedly mounted at the upper end of the second stirring shaft, the second mounting flange is connected with the first mounting flange through bolts, and a plurality of groups of sealing elements are arranged at the connection position of the second stirring shaft and the first stirring shaft;

the second stirring shaft is formed by sleeving double-layer steel pipes, the innermost layer steel pipe serves as a second water inlet pipe, a gap between the outer layer steel pipe and the inner layer steel pipe serves as a second water return pipe, the second water inlet pipe is communicated with the first water inlet pipe, and the second water return pipe is communicated with the first water return pipe;

and a stirrer is fixedly arranged on the outer side of the second stirring shaft.

Preferably, the agitator includes hollow vaulting pole, outer spiral shell area and interior spiral shell area, the multiunit connecting hole is seted up with the junction of agitator to the second (mixing) shaft, hollow vaulting pole passes through connecting hole and second (mixing) shaft fixed connection, hollow vaulting pole one side fixed mounting has outer spiral shell area, spiral shell area in hollow vaulting pole opposite side fixed mounting, outer spiral shell area and interior spiral shell area are around second (mixing) shaft spiral distribution.

Preferably, the hollow support rods are provided with five groups, the middle part of the hollow support rod at the bottommost side is provided with a baffle, the left side of the baffle is communicated with a second water inlet pipe inside the second stirring shaft, the right side of the baffle is communicated with a second water return pipe inside the second stirring shaft, and the insides of the other four groups of hollow support rods are through holes.

Preferably, a mechanical seal is fixedly arranged at the joint of the first stirring shaft and the frame.

Preferably, a water inlet pipe nut is arranged at the bottom of the rotary joint and is in threaded connection with the fixing ring.

Preferably, the inner and outer helical bands are provided with baffles.

The utility model has the advantages that:

the utility model provides a pair of double-pass spiral shell area heat transfer agitator makes the output shaft of reduction gear into the hollow shaft, carries out the integral type design with reduction gear output shaft and first (mixing) shaft, first (mixing) shaft bottom fixed mounting second (mixing) shaft to and fixed mounting agitator around the second (mixing) shaft outside. The high-temperature medium flows into the first water inlet pipe through the rotary joint, flows back to the first return pipe after completing a circle of circulation in the stirrer, and then flows out through the outlet of the rotary joint to form a large circulation. The outer surfaces of the stirrer and the second stirring shaft are utilized for heat transfer, and the temperature of the materials in the kettle is more uniform because the second stirrer is always in a rotating state.

The utility model provides a pair of two-way spiral shell area heat transfer agitator, first (mixing) shaft adopt the design of three-layer hollow tube, have completely cut off the direct contact of heat transfer medium with mechanical seal and speed reducer, have reduced heat transfer, can avoid speed reducer and mechanical seal's inefficacy, have increased the life of device.

The utility model provides a pair of two journey spiral shell area heat transfer agitator, the (mixing) shaft adopts the sectional type design, and first (mixing) shaft and second (mixing) shaft pass through flange joint, the agitated vessel's of being more convenient for dismouting. The spiral ribbon stirrer is adopted for heat transfer, various forms can be designed, the number of turns of the spiral ribbon can be increased or double spiral ribbons and other structures can be arranged according to the heat exchange area, and the requirement for large heat transfer can be met.

Description of the drawings:

in order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts;

fig. 1 is a schematic view of a connection structure of a first stirring shaft of the present invention;

FIG. 2 is a schematic view of the structure of the stirrer of the present invention;

FIG. 3 is a schematic view of the connection structure of the first stirring shaft and the second stirring shaft in the present invention;

FIG. 4 is a schematic view of the connection structure of the second stirring shaft and the hollow stay bar in the present invention;

FIG. 5 is a schematic structural view of the nut of the water inlet pipe of the present invention;

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

wherein: 1. a speed reducer; 2. a frame; 3. a first stirring shaft; 301. a first water inlet pipe; 302. a first water return pipe; 303. a heat-insulating layer; 4. mechanical sealing; 5. a first mounting flange; 6. a second stirring shaft; 601. a second water inlet pipe; 602. a second water return pipe; 7. a second mounting flange; 8. a fixing ring; 9. a rotary joint; 10. a water inlet pipe nut; 11. a heating box; 12. a hollow stay bar; 13. an outer helical band; 14. an inner helical band; 15. a seal member; 16. a baffle plate; 17. and (7) a baffle plate.

The specific implementation mode is as follows:

in order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Example (b): as shown in fig. 1-6, a double-pass ribbon heat transfer stirrer comprises a speed reducer 1, wherein a frame 2 is fixedly installed at the bottom of the speed reducer 1, a first stirring shaft 3 is rotatably installed inside the speed reducer 1, the first stirring shaft 3 and an output shaft of the speed reducer 1 are integrally formed, the first stirring shaft 3 is formed by sleeving three layers of steel pipes, the steel pipe at the innermost layer serves as a first water inlet pipe 301, a gap between a middle steel pipe and an inner steel pipe serves as a first water return pipe 302, and a heat insulation layer 303 is filled between the middle steel pipe and an outer steel pipe; first (mixing) shaft 3 adopts the design of three-layer hollow tube, and first inlet tube 301 is used for carrying heat transfer medium, and first return tube 302 is used for the medium after the backward flow cooling, and heat preservation 303 has completely cut off heat transfer medium and mechanical seal 4 and speed reducer 1's direct contact, has reduced heat transfer, can avoid speed reducer 1 and mechanical seal 4's inefficacy, has increased the life of device.

3 upper ends of first (mixing) shaft run through reduction gear 1 and fixed mounting have solid fixed ring 8, solid fixed ring 8 upside fixed mounting has rotary joint 9, and rotary joint 9 provides heat transfer medium to whole device, as whole agitating unit's input and delivery outlet, heating cabinet 11 has been cup jointed in the rotary joint 9 outside, and heating cabinet 11 has further heated heat retaining effect to the heat transfer medium of rotary joint 9 inside, reduces the thermal loss of heat transfer medium in the data send process.

The lower end of the first stirring shaft 3 penetrates through the rack 2 and is rotationally connected with the rack, a first mounting flange 5 is fixedly mounted at the bottom end of the first stirring shaft 3, a second stirring shaft 6 is fixedly mounted at the lower end of the first stirring shaft 3, a second mounting flange 7 is fixedly mounted at the upper end of the second stirring shaft 6, the second mounting flange 7 is connected with the first mounting flange 5 through bolts, and a plurality of groups of sealing elements 15 are arranged at the joint of the second stirring shaft 6 and the first stirring shaft 3; the stirring shaft is designed in a sectional mode, and the first stirring shaft 3 and the second stirring shaft 6 are connected through the first flange 5 and the second flange 7, so that the stirring equipment can be more conveniently disassembled and assembled.

The second stirring shaft 6 is formed by sleeving double-layer steel pipes, the innermost layer steel pipe serves as a second water inlet pipe 601, a gap between the outer layer steel pipe and the inner layer steel pipe serves as a second water return pipe 602, the second water inlet pipe 601 is communicated with the first water inlet pipe 301, and the second water return pipe 602 is communicated with the first water return pipe 302; a loop for the movement of a heat transfer medium is formed inside the second stirring shaft 6, so that the heat conduction effect is improved.

Second (mixing) shaft 6 outside fixed mounting has the agitator, the agitator includes hollow vaulting pole 12, outer spiral shell area 13 and interior spiral shell area 14, the multiunit connecting hole is seted up with the junction of agitator to second (mixing) shaft 6, hollow vaulting pole 12 passes through connecting hole and second (mixing) shaft 6 fixed connection, hollow vaulting pole 12 one side fixed mounting has outer spiral shell area 13, spiral shell area 14 in hollow vaulting pole 12 opposite side fixed mounting, outer spiral shell area 13 and interior spiral shell area 14 distribute around second (mixing) shaft 6 spiral. The spiral ribbon stirrer is adopted for heat transfer, various forms can be designed, the number of turns of the spiral ribbon can be increased or double spiral ribbons and other structures can be arranged according to the heat exchange area, and the requirement for large heat transfer can be met.

The hollow support rod 12 is provided with five groups, the middle part of the hollow support rod 12 at the bottommost side is provided with a baffle 16, the left side of the baffle 16 is communicated with a second water inlet pipe 601 inside the second stirring shaft 6, the right side of the baffle 16 is communicated with a second water return pipe 602 inside the second stirring shaft 6, and the insides of the hollow support rods 12 of the other four groups are through holes. The heat transfer medium flows to the bottom of the second stirring shaft 6 through the innermost second water inlet pipe 601, reaches the inside of the stirrer through the hollow stay bar 12, reaches the top of the stirrer through the outer spiral belt 13 from the bottom of the stirrer, flows to the inner stirrer through the hollow stay bar 12, circulates downwards along the inner spiral belt 14, and finally flows into the second water return pipe 602 through the hollow stay bar 12 to bring the low-temperature medium out of the kettle.

A mechanical seal 4 is fixedly arranged at the joint of the first stirring shaft 3 and the frame 2, so that liquid in the kettle tank is prevented from leaking in the stirring process.

The bottom of the rotary joint 9 is provided with a water inlet pipe nut 10, and the water inlet pipe nut 10 is connected with the fixing ring 8 through threads.

The internal parts of the outer helical band 13 and the inner helical band 14 are both provided with baffle plates 17, and when fluid passes through the inner helical band 13 and the outer helical band 14, the passing path of the fluid is increased, so that the medium stays in the stirrer for a longer time, and the strength of the stirrer is also increased.

The heat transfer medium is injected into the stirring device through the inlet of the rotary joint 9 by a pressure pump arranged outside, the heat transfer medium flows into the first water inlet pipe 301 after being heated by the heater 11, and then flows into the second water inlet pipe 601 inside the second stirring shaft 6 below the first stirring shaft 3, the heat transfer medium flows to the bottom of the second stirring shaft 6 through the innermost second water inlet pipe 601, the medium reaches the inside of the stirrer by utilizing the hollow support rod 12, the medium reaches the top of the stirrer through the outer helical band 13 from the bottom of the stirrer, and then flows into the inner stirrer by utilizing the hollow support rod 12, and finally flows into the second water return pipe 602 through the hollow support rod 12 after circulating along the inner helical band 14, and then flows into the first water return pipe 302, and the low-temperature medium is brought to the outside of the device through the outlet of the rotary joint 9.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (6)

1. A double-pass spiral belt heat transfer stirrer is characterized in that: the water-cooling water circulation system comprises a speed reducer (1), wherein a rack (2) is fixedly installed at the bottom of the speed reducer (1), a first stirring shaft (3) is rotatably installed inside the speed reducer (1), the first stirring shaft (3) and an output shaft of the speed reducer (1) are integrally formed, the first stirring shaft (3) is formed by sleeving three layers of steel pipes, the steel pipe at the innermost layer serves as a first water inlet pipe (301), a gap between a middle steel pipe and an inner side steel pipe serves as a first water return pipe (302), and a heat-insulating layer (303) is filled between the middle steel pipe;

the upper end of the first stirring shaft (3) penetrates through the speed reducer (1) and is fixedly provided with a fixing ring (8), the upper side of the fixing ring (8) is fixedly provided with a rotary joint (9), and the outer side of the rotary joint (9) is sleeved with a heating box (11);

the lower end of the first stirring shaft (3) penetrates through the rack (2) and is rotationally connected with the rack, a first mounting flange (5) is fixedly mounted at the bottom end of the first stirring shaft (3), a second stirring shaft (6) is fixedly mounted at the lower end of the first stirring shaft (3), a second mounting flange (7) is fixedly mounted at the upper end of the second stirring shaft (6), the second mounting flange (7) is connected with the first mounting flange (5) through bolts, and a plurality of groups of sealing elements (15) are arranged at the joint of the second stirring shaft (6) and the first stirring shaft (3);

the second stirring shaft (6) is formed by sleeving double-layer steel pipes, the innermost layer steel pipe serves as a second water inlet pipe (601), a gap between the outer layer steel pipe and the inner layer steel pipe serves as a second water return pipe (602), the second water inlet pipe (601) is communicated with the first water inlet pipe (301), and the second water return pipe (602) is communicated with the first water return pipe (302);

and a stirrer is fixedly arranged on the outer side of the second stirring shaft (6).

2. A two-pass ribbon heat transfer agitator as defined in claim 1, wherein: the agitator includes hollow vaulting pole (12), outer spiral shell area (13) and interior spiral shell area (14), the multiunit connecting hole is seted up with the junction of agitator in second (mixing) shaft (6), hollow vaulting pole (12) are through connecting hole and second (mixing) shaft (6) fixed connection, hollow vaulting pole (12) one side fixed mounting has outer spiral shell area (13), spiral shell area (14) in hollow vaulting pole (12) opposite side fixed mounting, outer spiral shell area (13) and interior spiral shell area (14) are around second (mixing) shaft (6) spiral distribution.

3. A two-pass ribbon heat transfer agitator as defined in claim 2, wherein: hollow vaulting pole (12) are provided with five groups, and hollow vaulting pole (12) middle part in bottommost side is equipped with baffle (16), baffle (16) left side and inside second inlet tube (601) intercommunication of second (mixing) shaft (6), baffle (16) right side and inside second wet return (602) intercommunication of second (mixing) shaft (6), the inside of other four groups of hollow vaulting poles (12) is the through-hole.

4. A two-pass ribbon heat transfer agitator as defined in claim 1, wherein: and a mechanical seal (4) is fixedly arranged at the joint of the first stirring shaft (3) and the frame (2).

5. A two-pass ribbon heat transfer agitator as defined in claim 1, wherein: the water inlet pipe is characterized in that a water inlet pipe nut (10) is arranged at the bottom of the rotary joint (9), and the water inlet pipe nut (10) is connected with the fixing ring (8) through threads.

6. A two-pass ribbon heat transfer agitator as defined in claim 2, wherein: baffle plates (17) are arranged in the outer spiral belt (13) and the inner spiral belt (14).

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