A limestone wet flue gas desulfurization exhaust pipe anti-blocking device

Abstract

The present invention discloses a device for preventing exhaust pipes from being blocked by wet limestone flue gas desulfurization, comprising a guiding mechanism including an air duct, a driving assembly arranged on the air duct, and a blocking assembly arranged on the air duct; a scraping mechanism including a driven assembly arranged on the driving assembly, a scraper assembly arranged in the air duct, and a containing assembly arranged on the air duct; a sweeping mechanism including a connecting rod arranged on the driven assembly and a cleaning assembly arranged on the connecting rod; a vibrating mechanism including a striking assembly and a limiting assembly arranged on the driven assembly, and a toggling assembly arranged on the cleaning assembly; the setting of the guiding mechanism facilitates better translation of the scraping mechanism; the scraper assembly in the scraping mechanism can effectively scrape off foreign matter crystals inside the air duct, wherein the sealing ring can effectively improve the scraping effect, can play a role in secondary cleaning and scraping slag, and clear obstacles during reverse movement.

Description

Technical Field

[0001] The invention relates to the field of pipeline blocking prevention, in particular to a limestone wet flue gas desulfurization exhaust pipeline blocking prevention device. Background Art

[0002] In order to reduce the emission of sulfur dioxide (SO2) in the flue gas of sulfur-containing fossil fuel combustion and protect the atmospheric environment, wet desulfurization using abundant limestone (calcium carbonate, CaCO3) as the raw material of desulfurizer and limestone-forced oxidation (LimeStone Forced Oxization, LSFO) to produce gypsum byproduct is the most widely used desulfurization process. More than 95% of China's thermal power plants use this process, and the designed desulfurization efficiency is generally 95%. Among them, wet desulfurization is characterized by the desulfurization system located at the end of the flue and after the dust collector. The reaction temperature of the desulfurization process is lower than the dew point, so the flue gas after desulfurization needs to be reheated before it can be discharged.

[0003] During the use of the existing wet flue gas desulfurization exhaust pipe, foreign matter crystals will form on the inner wall. If the foreign matter crystals that stick together are not cleaned regularly, it will affect the normal exhaust of the flue gas inside the pipe. Therefore, we designed a limestone wet flue gas desulfurization exhaust pipe anti-blocking device. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the problem that foreign matter crystals will form on the inner wall of the wet flue gas emission pipe in the above or prior art during use, and if the foreign matter crystals stuck together are not cleaned regularly, it will affect the normal emission of flue gas inside the pipe, the present invention is proposed.

[0006] Therefore, the object of the present invention is to provide a limestone wet flue gas desulfurization exhaust pipe anti-blocking device.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a limestone wet flue gas desulfurization exhaust pipe anti-blocking device, comprising:

[0008] The guide mechanism comprises an air guide tube, a driving assembly arranged on the air guide tube, and a blocking assembly arranged on the air guide tube;

[0009] The scraping mechanism comprises a driven component arranged on the driving component, a scraper component arranged in the air duct, and a receiving component arranged on the air duct;

[0010] A dust sweeping mechanism, comprising a connecting rod arranged on the driven component, and a cleaning component arranged on the connecting rod;

[0011] The vibration mechanism comprises a striking component and a limiting component arranged on the driven component, and a toggling component arranged on the cleaning component.

[0012] As a preferred solution of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, the driving assembly includes a motor arranged on the air duct, a threaded rod arranged on the motor, and a bracket arranged between the threaded rod and the air duct.

[0013] As a preferred solution of the limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, the barrier component includes a base rod arranged on the air guide pipe, and a stop rod arranged on the base rod.

[0014] As a preferred solution of the limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, wherein: the driven component includes a connecting block arranged on the threaded rod, and a driving frame arranged on the connecting block;

[0015] The scraper assembly includes a magnetic ring arranged in the air guide tube, a scraper arranged on the magnetic ring, a sealing ring arranged on the magnetic ring, and a limiting bead arranged on the magnetic ring;

[0016] The accommodating component includes a slag guide port opened on the air guide pipe, a slag storage box arranged on the air guide pipe, a guide plate arranged on the slag storage box, a slag discharge pipe arranged on the slag storage box, and a valve arranged on the slag discharge pipe.

[0017] As a preferred solution of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, the cleaning assembly includes a base ring arranged on a connecting rod, a mounting groove arranged on the base ring, an elastic part arranged on the mounting groove, and a cleaning ring arranged on the elastic part.

[0018] As a preferred solution of the device for preventing the exhaust pipe from being blocked by limestone wet flue gas desulfurization of the present invention, the elastic member comprises a first spring arranged on the mounting groove, and a mounting tube arranged on the first spring.

[0019] As a preferred solution of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, the striking assembly includes a accommodating cylinder arranged on a driving frame, a second spring arranged on the accommodating cylinder, a guide rod arranged on the second spring, a hammer arranged on the guide rod, and a pull rope arranged on the guide rod.

[0020] As a preferred solution of the device for preventing the exhaust pipe from being blocked by limestone wet flue gas desulfurization of the present invention, the limiting assembly comprises a positioning pin arranged on the driving frame, and a limiting sleeve arranged on the positioning pin.

[0021] As a preferred solution of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, the toggle assembly includes a positioning block arranged on the base ring, a toggle plate arranged on the positioning block, a slot arranged on the toggle plate, and a slot arranged on the slot.

[0022] As a preferred solution of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention, one end of the pull rope is connected to the guide rod near the center of one end of the second spring, and the pull rope passes through the accommodating tube and fits with its through hole, and the end of the pull rope away from the accommodating tube passes through the base ring and fits with its through hole.

[0023] The beneficial effects of the limestone wet flue gas desulfurization exhaust pipe anti-blocking device of the present invention are as follows: the setting of the guide mechanism is convenient for better driving the scraping mechanism to move horizontally, and the scraper assembly in the scraping mechanism can effectively scrape off foreign matter crystals inside the air duct, wherein the sealing ring can effectively improve the scraping effect, can play a secondary cleaning and slag scraping effect, and clear the obstacles during reverse movement, the outer wall of the limiting bead fits with the inner wall of the air duct, reducing the contact area between one end of the scraper assembly and the inner wall of the air duct, so that it can better move inside the air duct and improve the exhaust fluency of the pipeline, and the scraping mechanism simultaneously drives the cleaning assembly to move horizontally during the movement, and the cleaning assembly can effectively remove condensed water and dust on the outer wall of the air duct, can better protect the outer wall of the air duct, improve the cleanliness of the outer wall of the air duct and make it more beautiful, and the setting of the striking assembly can effectively increase the gap between the foreign matter crystals and the air duct, improve the effect of scraping off the foreign matter crystals inside the air duct, and better shake off the condensed water and dust on the outer wall of the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0025] Figure 1 It is an overall schematic diagram of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device.

[0026] Figure 2 This is a schematic diagram of the whole of an anti-blocking device for exhaust pipe of a limestone wet flue gas desulfurization process from another angle.

[0027] Figure 3for Figure 2 Enlarged view of point A in the middle.

[0028] Figure 4 The present invention is a partial structural cross-sectional view of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device.

[0029] Figure 5 for Figure 4 Enlarged view of point B in the middle.

[0030] Figure 6 The present invention is a schematic diagram of the structure of a scraper assembly of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device.

[0031] Figure 7 The diagram is a schematic diagram of an elastic part of an anti-blocking device for an exhaust pipe of a limestone wet flue gas desulfurization.

[0032] Figure 8 The present invention is a schematic diagram of the structure of a striking component of a limestone wet flue gas desulfurization exhaust pipe anti-blocking device. DETAILED DESCRIPTION

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0036] Example 1

[0037] Reference Figure 1-2, is the first embodiment of the present invention, which provides a limestone wet flue gas desulfurization exhaust pipe anti-blocking device, including a guide mechanism 100, including an air duct 101, a driving component 102 arranged on the air duct 101, and a blocking component 103 arranged on the air duct 101, a dust scraping mechanism 200, including a driven component 201 arranged on the driving component 102, a scraper component 202 arranged in the air duct 101, and a accommodating component 203 arranged on the air duct 101, a dust sweeping mechanism 300, including a connecting rod 301 arranged on the driven component 201, and a cleaning component 302 arranged on the connecting rod 301, a vibration mechanism 400, including a striking component 401 and a limiting component 402 arranged on the driven component 201, and a toggle component 403 arranged on the cleaning component 302.

[0038] Specifically, the setting of the guide mechanism 100 in the device is convenient for better driving the scraping mechanism 200 to translate. The scraper assembly 202 in the scraping mechanism 200 can effectively scrape off foreign crystals inside the air duct 101, thereby improving the exhaust fluency of the pipeline. During the movement of the scraping mechanism 200, the cleaning assembly 302 is simultaneously driven to translate. The cleaning assembly 302 can effectively remove condensed water and dust on the outer wall of the air duct 101, thereby better protecting the outer wall of the air duct 101. The setting of the striking assembly 401 can effectively increase the gap between the foreign crystals and the air duct 101, thereby improving the effect of scraping off foreign crystals inside the air duct 101, while better shaking off the condensed water and dust on the outer wall of the air duct 101.

[0039] The driving assembly 102 includes a motor 102a disposed on the airway tube 101, a threaded rod 102b disposed on the motor 102a, and a bracket 102c disposed between the threaded rod 102b and the airway tube 101. The blocking assembly 103 includes a base rod 103a disposed on the airway tube 101, and a gear rod 103b disposed on the base rod 103a.

[0040] The setting of the bracket 102c is convenient for better limiting the threaded rod 102b and for better driving the scraping mechanism 200.

[0041] When in use, the driving end of the motor 102a drives the threaded rod 102b to rotate, and the threaded rod 102b drives the scraping mechanism 200 to translate when rotating. During the movement of the scraping mechanism 200, the cleaning component 302 is also driven to move, and the striking component 401 is activated while the cleaning component 302 translates.

[0042] Example 2

[0043] Reference Figure 1-7, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: the scraping mechanism 200 includes a driven assembly 201, the driven assembly 201 includes a connecting block 201a arranged on the threaded rod 102b, and a driving frame 201b arranged on the connecting block 201a, the driving frame 201b is made of iron, the driving frame 201b is slidably connected to the air guide pipe 101, and the arrangement of the driving frame 201b facilitates better driving of the scraper assembly 202;

[0044] Specifically, the scraper assembly 202 includes a magnetic ring 202a arranged in the air guide tube 101, a scraper 202b arranged on the magnetic ring 202a, a sealing ring 202c arranged on the magnetic ring 202a, and a limiting bead 202d arranged on the magnetic ring 202a. The outer wall of the limiting bead 202d is in contact with the inner wall of the air guide tube 101. The sealing ring 202c can effectively improve the scraping effect, and can play a role in secondary cleaning and scraping slag, and clear obstacles during reverse movement. The accommodating assembly 203 includes a slag guide port 203a opened on the air guide tube 101, a slag storage box 203b arranged on the air guide tube 101, the setting of the slag storage box 203b is convenient for better collection of foreign matter crystallization, a guide plate 203c arranged on the slag storage box 203b, and a slag discharge port 203a arranged on the slag storage box 203b. Tube 203d, and valve 203e arranged on the slag discharge pipe 203d, the cross-section of the scraper 202b is annular, the outer wall of the magnetic ring 202a is provided with an anti-rust coating, a gap is provided between the bottom of the guide plate 203c and the inner wall of the slag storage box 203b, the slag discharge pipe 203d is arranged at the bottom center of the slag storage box 203b, the arrangement of the magnetic ring 202a is convenient for better limiting the scraper 202b, the device is arranged on the air pipe, the magnetic ring 202a and the driving frame 201b are attracted to each other, which is sufficient to effectively limit the scraper 202b, and the end of the magnetic ring 202a away from the scraper 202b is curved, so as to prevent the wind passing through the air guide pipe 101 from passing through the gap between the air guide pipe 101 and the magnetic ring 202a, and the wind force flowing in the air guide pipe 101 is not enough to shake the position of the scraper 202b.

[0045] The cleaning assembly 302 includes a base ring 302a disposed on the connecting rod 301, a mounting groove 302b disposed on the base ring 302a, an elastic member 302c disposed on the mounting groove 302b, and a dust cleaning ring 302d disposed on the elastic member 302c. The elastic member 302c includes a first spring 302c-1 disposed on the mounting groove 302b, and a mounting tube 302c-2 disposed on the first spring 302c-1. The arrangement of the elastic member 302c facilitates improving the fit between the dust cleaning ring 302d and the outer wall of the air duct 101, facilitates better removal of condensed water and dust on the outer wall of the air duct 101, prevents dust and water from mixing and corroding the air duct 101, and improves the service life of the air duct 101.

[0046] The rest of the structure is the same as that of Example 1.

[0047] When in use, the threaded rod 102b in the guide mechanism 100 rotates, and the driving frame 201b is driven to translate under the limiting action of the connecting block 201a and the air guide pipe 101. During the translation of the iron driving frame 201b, the scraper assembly 202 and the cleaning assembly 302 are driven to translate. The scraper 202b in the scraper assembly 202 scrapes off the crystallized foreign matter inside the air guide pipe 101, and the scraped impurities enter the slag storage box 203b through the slag guide port 203a under the push of the scraper 202b and the action of gravity. The guide plate 203c is provided to prevent the impurities in the slag storage box 203b from being brought out during the exhaust of the air guide pipe 101. The valve 203e on the slag discharge pipe 203d can be opened to discharge the impurities. During the translation of the cleaning assembly 302, the cleaning ring 302d cleans the outer wall of the air guide pipe 101.

[0048] Example 3

[0049] Reference Figure 1-8 , which is the third embodiment of the present invention. This embodiment is different from the second embodiment in that: the striking assembly 401 includes a accommodating tube 401a arranged on the driving frame 201b, a second spring 401b arranged on the accommodating tube 401a, a guide rod 401c arranged on the second spring 401b, a hammer 401d arranged on the guide rod 401c, and a pull rope 401e arranged on the guide rod 401c. The setting of the pull rope 401e facilitates better driving the guide rod 401c and the hammer 401d to translate.

[0050] Specifically, the limiting assembly 402 includes a positioning pin 402a disposed on the driving frame 201b, and a limiting sleeve 402b disposed on the positioning pin 402a. The setting of the limiting sleeve 402b facilitates better limiting of the pull rope 401e. The striking assembly 401 is disposed at an inclined angle on the driving frame 201b.

[0051] The toggle assembly 403 includes a positioning block 403a disposed on the base ring 302a, a toggle plate 403b disposed on the positioning block 403a, a slot 403c disposed on the toggle plate 403b, and a clamping plate 403d disposed on the slot 403c. The clamping plate 403d is provided to facilitate better movement of the toggle plate 403b, thereby better movement of the guide rod 401c and the hammer 401d. One end of the pull rope 401e is connected to the center of one end of the guide rod 401c near the second spring 401b, and the pull rope 401e penetrates the accommodating tube 401a and fits with its through hole. One end of the pull rope 401e away from the accommodating tube 401a penetrates the base ring 302a and fits with its through hole. The pull rope 401e is fixedly connected to the toggle plate 403b. The accommodating tube 401a is provided to facilitate better positioning of the guide rod 401c.

[0052] The rest of the structure is the same as that of Example 2

[0053] When in use, the driving frame 201b moves with the base ring 302a during its movement. When the card plate 403d moves toward the accommodating component 203, the card plate 403d drives the dial plate 403b to move away from the base ring 302a under the limiting action of the card slot 403c and the shift rod 103b. At this time, the dial plate 403b drives the pull rope 401e to move. The pull rope 401e drives the guide rod 401c and the hammer 401d to move away from the base rod 103a under the limiting action of the positioning pin 402a and the limiting sleeve 402b. The second spring 401b contracts and accumulates elastic potential energy, and the driving frame 201b is moved. 01b continues to move until the card plate 403d is separated from the gear lever 103b, and the second spring 401b is reset, driving the card plate 403d and the shift plate 403b to reset, and the guide rod 401c and the hammer 401d impact the base rod 103a, so that the base rod 103a and the air guide tube 101 vibrate under the impact, thereby increasing the gap between the foreign matter crystallization and the air guide tube 101, which is conducive to better scraping off the foreign matter, and when the driving frame 201b moves in the reverse direction, the card plate 403d is separated from the card slot 403c on the shift plate 403b, making the striking component 401 invalid, thereby increasing the smoothness of the reverse movement and saving unnecessary energy.

[0054] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A limestone wet flue gas desulfurization exhaust pipe anti-blocking device, characterized in that: include, A guide mechanism (100) comprising an air guide tube (101), a drive component (102) arranged on the air guide tube (101), and a barrier component (103) arranged on the air guide tube (101); The scraping mechanism (200) comprises a driven component (201) arranged on the driving component (102), a scraper component (202) arranged in the air duct (101), and a receiving component (203) arranged on the air duct (101); A dust sweeping mechanism (300) comprising a connecting rod (301) arranged on the driven component (201), and a cleaning component (302) arranged on the connecting rod (301); The vibration mechanism (400) comprises a striking component (401) and a limiting component (402) arranged on the driven component (201), and a toggling component (403) arranged on the cleaning component (302); The driving assembly (102) comprises a motor (102a) arranged on the air guide tube (101), a threaded rod (102b) arranged on the motor (102a), and a bracket (102c) arranged between the threaded rod (102b) and the air guide tube (101); The barrier assembly (103) comprises a base rod (103a) arranged on the air guide tube (101), and a stop rod (103b) arranged on the base rod (103a); The driven component (201) comprises a connecting block (201a) arranged on the threaded rod (102b), and a driving frame (201b) arranged on the connecting block (201a); The scraper assembly (202) comprises a magnetic ring (202a) arranged in the air guide tube (101), a scraper (202b) arranged on the magnetic ring (202a), a sealing ring (202c) arranged on the magnetic ring (202a), and a limiting bead (202d) arranged on the magnetic ring (202a); The accommodating component (203) comprises a slag guide port (203a) provided on the air guide pipe (101), a slag storage box (203b) provided on the air guide pipe (101), a guide plate (203c) provided on the slag storage box (203b), a slag discharge pipe (203d) provided on the slag storage box (203b), and a valve (203e) provided on the slag discharge pipe (203d); The cleaning assembly (302) comprises a base ring (302a) arranged on the connecting rod (301), a mounting groove (302b) arranged on the base ring (302a), an elastic member (302c) arranged on the mounting groove (302b), and a dust cleaning ring (302d) arranged on the elastic member (302c); The elastic member (302c) comprises a first spring (302c-1) arranged on the installation groove (302b), and a installation tube (302c-2) arranged on the first spring (302c-1); The striking assembly (401) comprises a accommodating tube (401a) arranged on a driving frame (201b), a second spring (401b) arranged on the accommodating tube (401a), a guide rod (401c) arranged on the second spring (401b), a hammer (401d) arranged on the guide rod (401c), and a pull rope (401e) arranged on the guide rod (401c).

2. A limestone wet flue gas desulfurization exhaust pipe anti-blocking device as claimed in claim 1, characterized in that: The limiting assembly (402) comprises a positioning pin (402a) arranged on the driving frame (201b), and a limiting sleeve (402b) arranged on the positioning pin (402a).

3. A limestone wet flue gas desulfurization exhaust pipe anti-blocking device as claimed in claim 2, characterized in that: The toggle assembly (403) comprises a positioning block (403a) arranged on the base ring (302a), a toggle plate (403b) arranged on the positioning block (403a), a clamping slot (403c) arranged on the toggle plate (403b), and a clamping plate (403d) arranged on the clamping slot (403c).

4. A limestone wet flue gas desulfurization exhaust pipe anti-blocking device as claimed in claim 3, characterized in that: One end of the pull rope (401e) is connected to the center of one end of the guide rod (401c) close to the second spring (401b), and the pull rope (401e) passes through the accommodating tube (401a) and fits with its through hole, and the end of the pull rope (401e) away from the accommodating tube (401a) passes through the base ring (302a) and fits with its through hole.

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