Dredging device for tubular heat exchanger

Abstract

The utility model is applicable to the technical field of heat exchanger cleaning, and provides a dredging device for a tube type heat exchanger, which comprises a shell, a dredging device and a dredging device, wherein a rotating shaft is rotationally mounted on the inner wall of the shell; the flexible threaded steel bar is rotationally mounted on the shell and is fixedly connected with the rotating shaft; the mounting column is fixedly mounted at one end of the flexible threaded steel bar; the slot is formed in the mounting column; the drill bit is arranged on the mounting column; the inserting block is fixedly arranged on the drill bit and is matched with the inserting groove; and the driving mechanism is arranged on the inner wall of the shell and used for driving the rotating shaft and the flexible threaded steel bars to rotate. According to the dredging device for the tubular heat exchanger, provided by the scheme, the scraped furfural cokes can be discharged in real time while the furfural cokes on the inner walls of the high-temperature side tubes are dredged, the dredging effect is good, the dredging efficiency is high, and the drill bit is convenient to replace.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchanger cleaning, and in particular relates to a dredging device for a shell-and-tube heat exchanger. Background Art

[0002] In the chemical, smelting, water treatment, environmental protection and other industries, shell and tube heat exchangers are the main equipment of the industry. In long-term operation, the high-temperature side tubes are prone to furfural coking, which reduces the heat exchange effect and cannot effectively exchange heat, affecting production. Therefore, the scale on the tubes must be cleaned regularly to ensure the heat exchange efficiency.

[0003] Existing unclogging devices for shell-and-tube heat exchangers often use a flexible shaft and a drill bit to unblock furfural coke on the inner wall of the high-temperature side tube. Therefore, while unclogging the furfural coke, the scraped furfural coke cannot be discharged in real time, resulting in poor unclogging effect and low unclogging efficiency. Utility Model Content

[0004] The utility model provides a clearing device for a shell-and-tube heat exchanger, aiming to solve the problems in the prior art of clearing furfural coke that the existing clearing device for a shell-and-tube heat exchanger cannot discharge the scraped furfural coke in real time while clearing furfural coke, resulting in poor clearing effect and low clearing efficiency.

[0005] To solve the above problems, the utility model is implemented as follows: a clearing device for a shell-and-tube heat exchanger, comprising: a shell with a rotating shaft rotatably mounted on the inner wall; a flexible threaded steel bar rotatably mounted on the shell and fixedly connected to the rotating shaft; a mounting column fixedly mounted on one end of the flexible threaded steel bar; a slot provided on the mounting column; a drill bit provided on the mounting column; an insert block fixedly mounted on the drill bit and adapted to the slot; and a driving mechanism provided on the inner wall of the shell, wherein the driving mechanism is used to drive the rotating shaft and the flexible threaded steel bar to rotate.

[0006] Preferably, the insert block is provided with a plurality of screw holes, and the mounting post is provided with a plurality of grooves.

[0007] Preferably, bolts are provided on the plurality of grooves, and the plurality of bolts are respectively threadedly connected to the inner walls of the plurality of screw holes.

[0008] Preferably, sealing plugs are provided on the plurality of grooves, and the plurality of sealing plugs are made of rubber material.

[0009] Preferably, the driving mechanism comprises: a variable frequency high-speed motor fixedly mounted on the inner wall of the housing and having a driving gear; and a driven gear fixedly sleeved on the rotating shaft and meshing with the driving gear.

[0010] Preferably, a controller is provided on the inner wall of the shell, a speed regulating knob is provided on the shell, and the speed regulating knob is connected to the controller.

[0011] Preferably, a handle is provided on the shell, and a push switch is provided on the handle.

[0012] Preferably, a cable is provided on the handle, and a triangular plug is provided at one end of the cable.

[0013] Compared with the related art, the dredging device for a shell-and-tube heat exchanger provided by the utility model has the following beneficial effects:

[0014] Compared with the prior art, the present solution provides a dredging device for a shell-and-tube heat exchanger, in which a rotating shaft is rotatably mounted on the inner wall of the shell, and a flexible threaded steel bar is fixedly connected to the rotating shaft, so that the steel bar can be flexibly bent and stretched as the rotating shaft rotates, and a mounting column is fixedly mounted on one end of the flexible threaded steel bar, on which a slot is provided so that a subsequent drill bit assembly can be installed in cooperation therewith, and the furfural coke scraped off can be discharged by the rotation of the flexible threaded steel bar, thereby improving the dredging efficiency, and a drill bit is provided on the mounting column, which is used to penetrate into the pipe of the heat exchanger for dredging, and the drill bit is fixed in the pipe by an insert block adapted to the slot. The drill bit can be easily replaced to meet different dredging needs. In addition, in order to drive the rotation of the rotating shaft and the flexible threaded steel bar, a driving mechanism is set on the inner wall of the shell. The driving mechanism can provide stable power for dredging work and ensure that the drill bit can effectively remove blockages in the pipeline. The device transmits the power of the drill bit to the deep end of the pipeline through the rotating flexible threaded steel bar, which effectively solves the problem that traditional dredging methods are difficult to reach the far end of the pipeline. At the same time, the replaceability of the drill bit increases the applicability and service life of the device, so that it can perform excellently in various complex dredging scenarios.

[0015] In summary, the shell-and-tube heat exchanger unclogging device proposed in this patent, through its unique design and efficient functions, brings great convenience and efficiency improvement to the daily maintenance and unclogging work of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of a dredging device for a shell-and-tube heat exchanger provided by the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the three-dimensional assembly structure of the drill bit and the plug block;

[0018] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of part A shown in FIG.

[0019] Figure numerals: 1. Shell; 2. Rotating shaft; 3. Flexible threaded steel bar; 4. Mounting column; 5. Slot; 6. Drill bit; 7. Insert block; 8. Screw hole; 9. Groove; 10. Bolt; 11. Sealing plug; 12. Variable frequency high-speed motor; 13. Driving gear; 14. Driven gear; 15. Controller; 16. Speed ​​knob; 17. Handle; 18. Push switch; 19. Protective cover; 20. Cable; 21. Triangular plug. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of the present application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" in the specification and claims of the present application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present application or the above-mentioned figures are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model provides a dredging device for a shell and tube heat exchanger, such as Figure 1-3 As shown, the unclogging device for a shell-and-tube heat exchanger comprises: a shell 1 with a rotating shaft 2 rotatably mounted on the inner wall; a flexible threaded steel bar 3 rotatably mounted on the shell 1 and fixedly connected to the rotating shaft 2; a mounting column 4 fixedly mounted on one end of the flexible threaded steel bar 3; a slot 5 provided on the mounting column 4; a drill bit 6 arranged on the mounting column 4; an insert 7 fixedly mounted on the drill bit 6 and adapted to the slot 5; and a driving mechanism arranged on the inner wall of the shell 1, the driving mechanism being used to drive the rotating shaft 2 and the flexible threaded steel bar 3 to rotate.

[0023] In this embodiment, a rotating shaft 2 is rotatably mounted on the inner wall of the shell 1, and a flexible threaded steel bar 3 is fixedly connected to the rotating shaft 2, so that the steel bar can be flexibly bent and stretched as the rotating shaft rotates. A mounting column 4 is fixedly mounted on one end of the flexible threaded steel bar 3, and a slot 5 is provided on the mounting column 4 so that a subsequent drill bit assembly can be installed in coordination therewith. The furfural coke scraped off can be discharged by the rotation of the flexible threaded steel bar 3, thereby improving the dredging efficiency. A drill bit 6 is provided on the mounting column 4, which is used to penetrate into the pipe of the heat exchanger for dredging. The drill bit 6 is fixed to the mounting column 4 through an insert block 7 adapted to the slot 5. This design allows the drill bit to be easily replaced to meet different dredging needs. In addition, in order to drive the rotation of the rotating shaft 2 and the flexible threaded steel bar 3, the device is provided with a driving mechanism on the inner wall of the housing 1, which can provide stable power for the dredging work, ensuring that the drill bit can effectively remove the blockage in the pipeline. The device transmits the force of the drill bit to the deep end of the pipeline through the rotating flexible threaded steel bar 3, effectively solving the problem that the traditional dredging method is difficult to reach the far end of the pipeline. At the same time, the replaceability of the drill bit increases the applicability and service life of the device, so that it can perform excellent performance in various complex dredging scenarios.

[0024] In summary, the shell-and-tube heat exchanger unclogging device proposed in this patent, through its unique design and efficient functions, brings great convenience and efficiency improvement to the daily maintenance and unclogging work of the heat exchanger.

[0025] In a further preferred embodiment of the present invention, a plurality of screw holes 8 are formed on the insert block 7 , and a plurality of grooves 9 are formed on the mounting column 4 .

[0026] In this embodiment, the bolt 10 can be installed through the groove 9 .

[0027] In a further preferred embodiment of the utility model, bolts 10 are disposed on the plurality of grooves 9 , and the plurality of bolts 10 are threadedly connected to the inner walls of the plurality of screw holes 8 , respectively.

[0028] In this embodiment, the insert block 7 can be fixed to the groove 9 by a plurality of bolts 10 , thereby completing the installation of the drill bit 6 .

[0029] In a further preferred embodiment of the present invention, a plurality of the grooves 9 are provided with sealing plugs 11, and the plurality of the sealing plugs 11 are made of rubber material.

[0030] In this embodiment, the groove 9 can be sealed by the sealing plug 11 , thereby preventing foreign matter from entering the groove 9 .

[0031] In a further preferred embodiment of the utility model, the driving mechanism includes: a variable frequency high-speed motor 12 fixedly mounted on the inner wall of the housing 1 and having a driving gear 13; and a driven gear 14 fixedly sleeved on the rotating shaft 2 and meshing with the driving gear 13.

[0032] In this embodiment, the variable frequency high-speed motor 12 can drive the flexible threaded steel bar 3 and the drill bit 6 to rotate through the driving gear 13 and the driven gear 14, so as to clear the furfural coke on the inner wall of the high-temperature side tube.

[0033] In a further preferred embodiment of the present invention, a controller 15 is disposed on the inner wall of the housing 1 , and a speed regulating knob 16 is disposed on the housing 1 , and the speed regulating knob 16 is connected to the controller 15 .

[0034] In this embodiment, the variable frequency high-speed motor 12 can be controlled by the controller 15, and the speed of the variable frequency high-speed motor 12 can be controlled by the speed knob 16, thereby further controlling the rotation of the flexible threaded steel bar 3 and the drill bit 6.

[0035] In a further preferred embodiment of the present invention, a handle 17 is disposed on the housing 1 , and a push switch 18 is disposed on the handle 17 .

[0036] In this embodiment, the worker can hold the device by the handle 17 , and can control the start and stop of the variable frequency high-speed motor 12 by pressing the switch 18 .

[0037] In a further preferred embodiment of the present invention, a cable 20 is disposed on the handle 17 , and a triangular plug 21 is disposed at one end of the cable 20 .

[0038] In this embodiment, the device can be connected to a power source via a cable 20 and a triangular plug 21 .

[0039] In summary, compared with the relevant technology, the device can discharge the scraped furfural coke in real time while clearing the furfural coke on the inner wall of the high-temperature side tube, has a better clearing effect, a higher clearing efficiency, and is convenient for replacing the drill bit.

[0040] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0041] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A dredging device for a shell-and-tube heat exchanger, characterized in that: include: A housing with a rotating shaft rotatably mounted on the inner wall; A flexible threaded steel bar rotatably mounted on the housing and fixedly connected to the rotating shaft; A mounting column fixedly mounted on one end of the flexible threaded steel bar; A slot is provided on the mounting post; a drill bit disposed on the mounting column; An insert block fixedly mounted on the drill bit and adapted to the slot; A driving mechanism is arranged on the inner wall of the shell, and the driving mechanism is used to drive the rotating shaft and the flexible threaded steel bar to rotate.

2. The dredging device for a shell-and-tube heat exchanger according to claim 1, characterized in that: The insert block is provided with a plurality of screw holes, and the mounting column is provided with a plurality of grooves.

3. The dredging device for a shell-and-tube heat exchanger according to claim 2, characterized in that: Bolts are arranged on the plurality of grooves, and the plurality of bolts are respectively threadedly connected with the inner walls of the plurality of screw holes.

4. The dredging device for a shell-and-tube heat exchanger according to claim 2, characterized in that: Sealing plugs are arranged on the plurality of grooves, and the plurality of sealing plugs are made of rubber material.

5. The dredging device for a shell-and-tube heat exchanger according to claim 1, characterized in that: The driving mechanism comprises: A variable frequency high-speed motor fixedly mounted on the inner wall of the housing and having a driving gear; A driven gear is fixedly sleeved on the rotating shaft and meshed with the driving gear.

6. The dredging device for a shell-and-tube heat exchanger according to claim 1, characterized in that: A controller is arranged on the inner wall of the shell, a speed regulating knob is arranged on the shell, and the speed regulating knob is connected to the controller.

7. The dredging device for a shell-and-tube heat exchanger according to claim 1, characterized in that: The shell body is provided with a handle, and the handle is provided with a press switch.

8. The dredging device for a shell-and-tube heat exchanger according to claim 7, characterized in that: The handle is provided with a cable, and one end of the cable is provided with a triangular plug.

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