Short telescopic soot blower

Abstract

The invention discloses a short telescopic soot blower, which relates to the technical field of soot blowing guns, and comprises a supporting unit, a gooseneck valve body, a valve arranged on the gooseneck valve body, and a driving system arranged on the gooseneck valve body; the soot gun telescopic unit comprises a threaded telescopic assembly arranged on the gooseneck valve body, a movable positioning assembly arranged on the threaded telescopic assembly, a guide assembly arranged on the threaded telescopic assembly and matched with the movable positioning assembly, and an elastic force orientation assembly arranged on the guide assembly and connected with the movable positioning assembly. According to the short telescopic soot blower, the soot blower telescopic unit is arranged, a threaded pipe and a cam on the soot blower telescopic unit are matched with a positioning ring, a guide block and other structures to track and position a soot blower gun barrel, and the stroke of the soot blower is determined according to the moving position of the soot blower gun barrel; and the phenomenon of faults caused by false strokes after the motor is separated from the soot blower connecting pin when the soot blower strokes are determined according to the running time of the motor is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of sootblowing guns, and in particular to a short telescopic sootblower. Background Art

[0002] The short telescopic sootblower is a tool specially designed for boiler cleaning and maintenance, especially for removing ash and slag deposits in industrial boilers and heat exchangers;

[0003] The existing short telescopic soot blower is positioned by following the motor during use, and the stroke of the soot blower is determined according to the running time of the soot blower motor. However, since the existing soot blower and the motor shaft are generally connected by a connecting pin, as the running time is too long, the equipment will inevitably age, resulting in an increase in defects, such as jamming, connecting pin damage, internal leakage and other faults. In particular, the connecting pin damage is hidden and often occurs during operation, resulting in water wall damage, which is very harmful.

[0004] When the connecting pin is damaged, broken or falls off, the movement of the drive shaft and the advance and retreat of the sootblowing gun will be out of sync. After the threaded tube of the sootblowing gun is in place, the sootblowing gun is not actually retreated (advanced) into place. Once this happens, the sootblowing gun in place signal will be transmitted to the remote control end of the centralized control system. The remote display shows that the sootblowing gun has ended its operation without any alarm. However, the sootblowing gun is actually in continuous sootblowing, the steam source is not interrupted, and the sootblowing gun is fixed in one position for continuous blowing, which eventually causes the water-cooled wall to be damaged and thinned, or even burst and shut down. There are safety hazards and improvements need to be made. Summary of the invention

[0005] 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.

[0006] In view of the fact that the above-mentioned existing short telescopic sootblower has the phenomenon that the movement of the motor shaft is not synchronized with the advance and retreat of the sootblower, so that when the connecting pin breaks or falls off, the formation of the sootblowing gun is tracked according to the motor running time, which is prone to false stroke and causes device failure, posing a safety hazard, the present invention is proposed.

[0007] Therefore, the purpose of the present invention is to provide a short telescopic sootblower, which aims to solve the problem that when the connecting pin breaks or falls off, the formation of the sootblowing gun is tracked according to the motor running time, which is prone to false stroke and causes device failure, posing a safety hazard.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising a support unit, including a gooseneck valve body, a valve arranged on the gooseneck valve body, and a drive system arranged on the gooseneck valve body;

[0009] The sootblowing gun telescopic unit includes a threaded telescopic component arranged on the gooseneck valve body, a movable positioning component arranged on the threaded telescopic component, a guide component arranged on the threaded telescopic component and matched with the movable positioning component, and an elastic directional component arranged on the guide component and connected to the movable positioning component.

[0010] As a preferred solution of the short telescopic sootblower of the present invention, the threaded telescopic assembly includes a gear cover arranged on the gooseneck valve body, a rotating sleeve arranged on the gear cover, and a main gear arranged on the rotating sleeve.

[0011] As a preferred solution of the short telescopic sootblower described in the present invention, the threaded telescopic assembly also includes a fixed inner tube arranged on the gooseneck valve body, a threaded tube arranged on the fixed inner tube and connected to the rotating sleeve, and a nozzle arranged on the threaded tube.

[0012] As a preferred solution of the short telescopic sootblower described in the present invention, the movable positioning assembly includes a collar arranged on the threaded tube, and a cam arranged on the collar, the cam is provided with a stuffing chamber connected to the inner tube, and the fixed inner tube is provided with a positioning ring.

[0013] As a preferred solution of the short telescopic sootblower of the present invention, the guide assembly includes a transverse plate arranged on the gear cover, a guide convex plate arranged on the transverse plate, and a guide groove arranged on the cam and matched with the guide convex plate.

[0014] As a preferred solution of the short telescopic sootblower of the present invention, a starting arm cooperating with a cam is provided on the gooseneck valve body.

[0015] As a preferred solution of the short telescopic sootblower of the present invention, the elastic force directional assembly includes a connecting block arranged on the transverse plate, a connecting rod arranged on the connecting block and passing through the transverse plate, and a storage hole arranged on the connecting rod.

[0016] As a preferred solution of the short telescopic soot blower described in the present invention, the elastic force directional assembly also includes a sliding rod arranged in the storage hole, a guide block arranged on the sliding rod and located on one side of the guide protrusion, and a spring arranged on the sliding rod and connected to the inner wall of the storage hole.

[0017] As a preferred solution of the short telescopic sootblower of the present invention, the bottom of the guide block is arranged as an inclined surface, and the guide block and the guide groove are slidably connected.

[0018] As a preferred solution of the short telescopic sootblower described in the present invention, the driving system includes a motor arranged on the gooseneck valve body, a reduction gear box arranged on the motor, a control box arranged on the reduction gear box, and a driving shaft arranged on the reduction gear box, the driving shaft is connected to a transmission shaft, and the driving shaft is provided with a transmission gear meshing with a main gear.

[0019] The beneficial effects of the present invention are as follows: by setting a telescopic unit for the sootblowing gun, the threaded tube and cam on the telescopic unit are used in conjunction with a positioning ring, a guide block and other structures to track and position the sootblower barrel, and the stroke of the sootblower is determined according to the position of the sootblower barrel movement, thereby avoiding the phenomenon that a false stroke occurs when the motor and the sootblower connecting pin are disconnected when the sootblower stroke is determined based on the running time of the motor, thereby causing a malfunction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the connection between the support unit and the telescopic unit of the sootblowing gun of the present invention.

[0023] Figure 3 It is a schematic structural diagram of the threaded telescopic assembly and the movable positioning assembly of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the mobile positioning component of the present invention.

[0025] Figure 5 For the present invention Figure 4 A magnified schematic diagram of center A.

[0026] Figure 6 It is a structural schematic diagram of the threaded telescopic assembly of the present invention. DETAILED DESCRIPTION

[0027] 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.

[0028] 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.

[0029] 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.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0031] Example 1, reference Figures 1 to 6 , which is the first embodiment of the present invention, provides a short telescopic sootblower, which includes a support unit 100, including a gooseneck valve body 101, a valve 102 arranged on the gooseneck valve body 101, and a drive system 103 arranged on the gooseneck valve body 101; a sootblowing gun telescopic unit 200, including a threaded telescopic component 201 arranged on the gooseneck valve body 101, a movable positioning component 202 arranged on the threaded telescopic component 201, a guide component 203 arranged on the threaded telescopic component 201 and matched with the movable positioning component 202, and an elastic directional component arranged on the guide component 203 and connected to the movable positioning component 202; wherein the sootblowing gun telescopic unit 200 is controlled by the drive system 103, and the valve 102 is connected to the gooseneck valve body 101.

[0032] When in use, the threaded telescopic component 201 is driven to rotate by controlling the driving system 103, so that the movable positioning component 202 moves on the guide component 203, thereby driving the threaded tube 201e and the nozzle 201f in the threaded telescopic component 201 to extend for subsequent cleaning work. After the soot blower cleaning work is completed, the movable positioning component 202 that needs to be reset can be positioned and guided by the elastic directional component so that it can continue to return to its original position along the guide component 203.

[0033] Example 2, reference Figures 2 to 5, which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: the threaded telescopic assembly 201 includes a gear cover 201a arranged on the gooseneck valve body 101, a rotating sleeve 201b arranged on the gear cover 201a, and a main gear 201c arranged on the rotating sleeve 201b; wherein, the gear cover 201a is fixedly connected to the gooseneck valve body 101, the rotating sleeve 201b is rotatably connected to the gear cover 201a through a bearing, and the main gear 201c is sleeved and fixedly connected to the rotating sleeve 201b. By setting the main gear 201c and the rotating sleeve 201b, the sootblower gun barrel can be driven to move when used in conjunction with the drive system 103.

[0034] Furthermore, the threaded telescopic assembly 201 also includes a fixed inner tube 201d arranged on the gooseneck valve body 101, a threaded tube 201e arranged on the fixed inner tube 201d and connected to the rotating sleeve 201b, and a nozzle 201f arranged on the threaded tube 201e; wherein, the fixed inner tube 201d is fixedly connected to the gooseneck valve body 101, a thread is arranged on the outer ring of the threaded tube 201e, the inner surface of the threaded tube 201e is slidably connected to the outer surface of the fixed inner tube 201d, the nozzle 201f is connected to one end of the threaded tube 201e, and a soot blowing hole is arranged on the nozzle 201f. Through the arrangement of the soot blowing hole, after the nozzle 201f is extended to the position that needs to be cleaned in the boiler equipment, the position can be soot-blown and cleaned.

[0035] Furthermore, the mobile positioning assembly 202 includes a collar 202a arranged on the threaded tube 201e, and a cam 202b arranged on the collar 202a, the cam 202b is provided with a stuffing chamber 202c connected to the fixed inner tube 201d, and the fixed inner tube 201d is provided with a positioning ring 202d; wherein the collar 202a is threadedly connected to the outer surface of the threaded tube 201e, the cam 202b is sleeved and fixedly connected to the outer surface of the collar 202a, one side of the stuffing chamber 202c is fixedly connected to the cam 202b by bolts, and the stuffing chamber 202c is fixedly connected to the cam 202b by bolts. The inner surface of the material chamber 202c and the outer surface of the fixed inner tube 201d are in close contact and in a sliding connection. The positioning ring 202d is sleeved and fixedly connected to the end of one end of the fixed inner tube 201d. When the sleeve ring 202a, the cam 202b, the stuffing chamber 202c and the threaded tube 201e return to contact with the positioning ring 202d after the sootblowing is completed, it means that the threaded tube 201e and the nozzle 201f have returned to their positions. At this time, the positioning ring 202d will transmit the signal that the sootblowing gun is in place to the centralized remote control end, and the remote display shows that the sootblowing gun has ended its operation;

[0036] The goose-force valve body 101 is the main supporting component of the sootblower, which is connected to the fixed inner tube 201d (steam supply pipe) to transport the sootblowing medium (steam) through the threaded tube 201e to the nozzle 201f. The packing installed between the fixed inner tube 201d and the threaded tube 201e plays a sealing role when the sootblower rotates.

[0037] Furthermore, the guide assembly 203 includes a transverse plate 203a arranged on the gear cover 201a, a guide protrusion 203b arranged on the transverse plate 203a, and a guide groove 203c arranged on the cam 202b and matched with the guide protrusion 203b; wherein, one end of the transverse plate 203a is fixedly connected to the gear cover 201a, and the other end is fixedly connected to the gooseneck valve body 101, the guide protrusion 203b is fixedly connected to the bottom of the transverse plate 203a, the guide groove 203c is opened on the cam 202b, and the guide groove 203c and the guide protrusion 203b are slidably connected. The cam 202b can be limited by the setting of the guide protrusion 203b and the guide groove 203c, so as to drive the threaded tube 201e, the nozzle 201f and other structures to move.

[0038] Furthermore, a starting arm 203d cooperating with the cam 202b is provided on the gooseneck valve body 101; wherein, the bottom end of the starting arm 203d is rotatably connected to the gooseneck valve body 101 through a rotating member, and an automatic reset spring is provided on the starting arm 203d, and the starting arm 203d controls the cam 202b when it moves and comes into contact with it.

[0039] Furthermore, the elastic force directional assembly includes a connecting block 204a arranged on the horizontal plate 203a, a connecting rod 204b arranged on the connecting block 204a and passing through the horizontal plate 203a, and a storage hole 204c arranged on the connecting rod 204b; wherein, the connecting block 204a is fixedly connected to the top of the horizontal plate 203a, the connecting rod 204b is fixedly connected to the connecting block 204a, and the storage hole 204c is opened on the connecting rod 204b.

[0040] Furthermore, the elastic force directional assembly also includes a sliding rod 204d arranged in the storage hole 204c, a guide block 204e arranged on the sliding rod 204d and located on one side of the guide protrusion 203b, and a spring 204f arranged on the sliding rod 204d and connected to the inner wall of the storage hole 204c; wherein, the sliding rod 204d is slidably connected in the storage hole 204c, the guide block 204e is fixedly connected to the bottom end of the sliding rod 204d, the bottom end of the spring 204f is fixedly connected to the top end of the sliding rod 204d, and the top end of the spring 204f is fixedly connected to the inner wall of the storage hole 204c, and the setting of the guide block 204e can return to the cam 202b and the threaded tube 201e, and the guide groove 203c on the auxiliary cam 202b is positioned and connected with the guide protrusion 203b.

[0041] Furthermore, the bottom of the guide block 204e is provided with an inclined surface, and the guide block 204e is slidably connected to the guide groove 203c; wherein, through the inclined surface setting on the guide block 204e, when the cam 202b rotates clockwise, when the cam 202b moves to a certain position, the guide block 204e can be squeezed, so that the guide block 204e moves upward and disengages from the guide groove 203c, thereby releasing the limit on the cam 202b, so that the cam 202b and the threaded tube 201e can rotate, thereby performing a rotational soot blowing process according to a preset number of turns; conversely, when the cam 202b rotates counterclockwise and returns to the guide block 204e, the guide block 204e will automatically enter the guide groove 203c under the elastic force of the spring 204f during the rotation of the cam 202b, and continue to limit the cam 202b so that it returns to the initial position along the guide convex plate 203b.

[0042] When in use, after the power is turned on, the control drive system 103 is operated, and the motor 103a, the reduction box 103b, the control box, the drive shaft 103d, the transmission shaft 103e and the transmission gear 103f are used to drive the main gear 201c to rotate clockwise, drive the threaded tube 201e to extend, and the cam 202b to move forward. Since the guide groove 203c on the cam 202b is stuck on the guide convex plate 203b and moves, it will prevent the threaded tube 201e, the cam 202b and the nozzle 201f from rotating clockwise. When the cam 202b moves to a certain position, the annular surface of the cam 202b will touch the soot blowing medium valve 102 of the starting arm 203d, and soot will be blown according to the predetermined number of circles.

[0043] After the soot blowing completes the predetermined number of turns, the control driving system 103 makes the motor 103a reverse, driving the threaded tube 201e and the cam 202b to rotate counterclockwise. When the guide groove 203c on the cam 202b leads to the guide block 204e positioned by the spring 204f, the top force acting on the stem of the steam valve disappears, the valve 102 is closed, and the steam is cut off. The guide block 204e prevents the cam 202b from continuing to rotate, so that the threaded tube 201e and the cam 202b return to the starting position along the guide convex plate 203b. After the threaded tube 201e returns to the starting position, when the guide groove 203c on the cam 202b disengages from the guide rod and continues to rotate counterclockwise, the positioning ring 202d fixed at the front end of the inner tube 201d prevents the threaded tube 201e from continuing to retreat. When the stuffing chamber 202c on the cam 202b contacts the positioning ring 202d, it means that the soot blower has returned to its position. At this time, the positioning ring 202d will transmit the signal that the soot blower is in place to the remote control end of the centralized control, and the remote display shows that the soot blower has ended. The stroke of the soot blower is determined according to the position of the soot blower gun barrel, so as to avoid the phenomenon that the soot blower stroke is determined by the running time of the motor 103a, and the motor 103a is disconnected from the soot blower connecting pin, resulting in a false stroke and causing a malfunction.

[0044] The remaining structures are the same as those of Example 1.

[0045] Example 3, reference Figure 1 and Figure 6 , which is the third embodiment of the present invention, and this embodiment is different from the second embodiment in that: the driving system 103 includes a motor 103a arranged on the gooseneck valve body 101, a reduction box 103b arranged on the motor 103a, a control box 103c arranged on the reduction box 103b, and a driving shaft 103d arranged on the reduction box 103b, the driving shaft 103d is connected to a transmission shaft 103e, and the driving shaft 103d is provided with a transmission gear 103f meshing with the main gear 201c;

[0046] When in use, after the power is turned on, the motor 103a, reduction box 103b, control box and other structures in the drive system 103 will drive the drive shaft 103d, transmission shaft 103e and transmission gear 103f to rotate, thereby driving the main gear 201c to rotate, thereby driving the threaded pipe 201e and other structures to move for soot blowing.

[0047] The remaining structure is the same as that of Example 2.

[0048] 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.

[0049] 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.

[0050] 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 short telescopic sootblower, characterized in that: include, A support unit (100) comprising a gooseneck valve body (101), a valve (102) arranged on the gooseneck valve body (101), and a drive system (103) arranged on the gooseneck valve body (101); The sootblowing gun telescopic unit (200) comprises a threaded telescopic component (201) arranged on the gooseneck valve body (101), a movable positioning component (202) arranged on the threaded telescopic component (201), a guide component (203) arranged on the threaded telescopic component (201) and matched with the movable positioning component (202), and an elastic orientation component arranged on the guide component (203) and connected to the movable positioning component (202).

2. The short telescopic sootblower according to claim 1, characterized in that: The threaded telescopic assembly (201) comprises a gear cover (201a) arranged on the gooseneck valve body (101), a rotating sleeve (201b) arranged on the gear cover (201a), and a main gear (201c) arranged on the rotating sleeve (201b).

3. The short telescopic sootblower according to claim 2, characterized in that: The threaded telescopic assembly (201) further comprises a fixed inner tube (201d) arranged on the gooseneck valve body (101), a threaded tube (201e) arranged on the fixed inner tube (201d) and connected to the rotating sleeve (201b), and a nozzle (201f) arranged on the threaded tube (201e).

4. The short telescopic sootblower according to claim 3, characterized in that: The movable positioning assembly (202) comprises a collar (202a) arranged on the threaded tube (201e), and a cam (202b) arranged on the collar (202a); a stuffing chamber (202c) connected to the inner tube is arranged on the cam (202b); and a positioning ring (202d) is arranged on the fixed inner tube (201d).

5. The short telescopic sootblower according to claim 4, characterized in that: The guide assembly (203) comprises a transverse plate (203a) arranged on the gear cover (201a), a guide convex plate (203b) arranged on the transverse plate (203a), and a guide groove (203c) arranged on the cam (202b) and matched with the guide convex plate (203b).

6. The short telescopic sootblower according to claim 5, characterized in that: The gooseneck valve body (101) is provided with a starting arm (203d) that cooperates with the cam (202b).

7. The short telescopic sootblower according to claim 6, characterized in that: The elastic force orientation component comprises a connection block (204a) arranged on the transverse plate (203a), a connection rod (204b) arranged on the connection block (204a) and penetrating the transverse plate (203a), and a storage hole (204c) arranged on the connection rod (204b).

8. The short telescopic sootblower according to claim 7, characterized in that: The elastic force orientation component also includes a sliding rod (204d) arranged in the storage hole (204c), a guide block (204e) arranged on the sliding rod (204d) and located on one side of the guide protrusion (203b), and a spring (204f) arranged on the sliding rod (204d) and connected to the inner wall of the storage hole (204c).

9. The short telescopic sootblower according to claim 8, characterized in that: The bottom of the guide block (204e) is arranged as an inclined surface, and the guide block (204e) is slidably connected to the guide groove (203c).

10. The short telescopic sootblower according to claim 9, characterized in that: The driving system (103) comprises a motor (103a) arranged on the gooseneck valve body (101), a reduction box (103b) arranged on the motor (103a), a control box (103c) arranged on the reduction box (103b), and a driving shaft (103d) arranged on the reduction box (103b), wherein the driving shaft (103d) is connected to a transmission shaft (103e), and the driving shaft (103d) is provided with a transmission gear (103f) meshing with a main gear (201c).

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