A low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device

Abstract

This invention discloses a low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device, relating to the field of ash conveying technology for boiler economizers. It includes a main unit comprising an ash conveying pipe, a rectangular opening on the ash conveying pipe, and an inclined pipe positioned above the ash conveying pipe. A connection unit includes a fixing component on the ash conveying pipe that mates with the rectangular opening, a positioning component on the fixing component that mates with the inclined pipe, a sealing component on the positioning component that mates with the inclined pipe, and a plugging component on the sealing component that mates with the positioning component. This low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device, by setting up the connection unit and utilizing the fixing component, positioning component, sealing component, and plugging component on the connection unit, achieves a fixed connection between the inclined pipe and the ash conveying pipe. Furthermore, it eliminates the need to drill an inclined hole in the ash conveying pipe, reducing installation difficulty and cost, and demonstrating strong practicality.

Description

Technical Field

[0001] This invention relates to the field of ash conveying systems for boiler economizers, and in particular to a low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device. Background Technology

[0002] In recent years, the actual ash content of coal has been higher than the design ash content, which is reflected in the large amount of coarse ash in the economizer flue section. This results in a large amount of ash accumulation at the bottom corner of the economizer flue. The severe ash accumulation in the economizer flue section reduces the flue flow area, obstructs the flow of flue gas, and reduces the flow velocity. This leads to a series of problems such as blockage of the denitrification catalyst and air preheater at the rear of the flue. It can also cause serious temperature and pressure increases in the boiler, which in turn leads to safety hazards. Therefore, it is necessary to add a low-pressure energy-saving unit fluidized pneumatic ash conveying system.

[0003] Low-pressure energy-saving unit fluidized pneumatic conveying technology is mainly used to transport powdery materials (such as fly ash from coal-fired power plants) from one place to another. Firstly, it solves the problem of ash accumulation at the corner of the bottom flue of the economizer. Secondly, it improves the ash conveying efficiency of the economizer ash conveying system and reduces the amount of gas used for ash conveying, overcoming the problems of difficult conveying and severe pipe wear caused by the large and heavy particles of economizer fly ash, ensuring stable system operation, and avoiding pipe blockage; it also reduces the ash conveying velocity, reduces wear on pipelines and valves, and effectively saves operating costs; and it reduces the ash conveying pressure, ensuring the operational reliability of the ash conveying system and the economizer, denitrification, and air preheater systems, ensuring stable boiler operation, and reducing the risk of unit outages.

[0004] Currently, pneumatic conveyors are typically installed at a 35° angle on ash conveying pipes via connecting pipes. This angled installation offers advantages such as reduced wear, prevention of blockages, improved flow characteristics, reduced energy consumption, prevention of material backflow, and increased conveying efficiency. However, this angled installation requires pre-drilling corresponding angled holes in the ash conveying pipe for connection. Machining angled holes is more complex than straight holes, potentially requiring specialized tools and processes, thus increasing manufacturing costs and necessitating improvements. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0006] Given that the existing low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device requires inclined installation and the need to pre-drill corresponding inclined holes on the ash conveying pipe for connection, but the processing of inclined holes is more complicated than that of straight holes, and may require special tools and processes, which increases manufacturing costs, this invention is proposed.

[0007] Therefore, the purpose of this invention is to provide a low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device. Its purpose is to solve the problem that inclined installation requires pre-drilling corresponding inclined holes on the ash conveying pipe for connection. However, the processing of inclined holes is more complicated than that of straight holes, which may require special tools and processes, thus increasing manufacturing costs.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: including a main body unit, including an ash conveying pipe, a rectangular opening disposed on the ash conveying pipe, and an inclined pipe disposed above the ash conveying pipe;

[0009] The connecting unit includes a fixing component disposed on the ash conveying pipe and cooperating with a rectangular opening, a positioning component disposed on the fixing component and cooperating with an inclined pipe, a sealing component disposed on the positioning component and cooperating with an inclined pipe, and a plugging component disposed on the sealing component and cooperating with the positioning component.

[0010] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device of the low-pressure energy-saving unit of the present invention, the fixing component includes an upper half ring and a lower half ring disposed on the ash conveying pipe and located on both sides of the rectangular opening, and a fixing bolt disposed on the upper half ring and connected to the lower half ring.

[0011] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device for low-pressure energy-saving unit described in this invention, a connecting rod is provided on the lower half ring, and a counterweight ball is provided on the connecting rod.

[0012] As a preferred embodiment of the low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device of the present invention, the positioning component includes a connecting plate disposed between the two upper half rings, a positioning plate disposed on the connecting plate, and a rectangular positioning groove disposed on the connecting plate.

[0013] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device for the low-pressure energy-saving unit of the present invention, the positioning component further includes a placement groove 1 disposed on the positioning plate and cooperating with the inclined pipe, an internal thread 1 disposed on the inner wall of the placement groove 1, and a sealing half-ring 1 disposed on the inner wall of the placement groove 1 and located on one side of the internal thread 1.

[0014] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device for the low-pressure energy-saving unit described in this invention, the sealing assembly includes a sealing plate disposed above the connecting plate, a merging plate disposed on the sealing plate and cooperating with the positioning plate, and a rectangular connecting groove disposed on the sealing plate and adapted to the rectangular positioning groove.

[0015] As a preferred embodiment of the low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device of the present invention, the sealing assembly further includes a placement groove two disposed on the merging plate and cooperating with the inclined pipe, an internal thread two disposed on the inner wall of the placement groove two and cooperating with the internal thread one, and a sealing half ring two disposed on the inner wall of the placement groove two and located on one side of the internal thread two. The inclined pipe is provided with an external thread that cooperates with the internal thread one and the internal thread two.

[0016] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device for the low-pressure energy-saving unit of the present invention, the plug-in assembly includes an oblique insertion hole disposed on the positioning assembly and a vertical insertion hole disposed on the connecting plate.

[0017] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device for the low-pressure energy-saving unit described in this invention, the plug-in assembly further includes an oblique insertion rod disposed on the merging plate and adapted to the oblique insertion hole, a cavity disposed on the sealing plate, and a vertical insertion rod disposed inside the cavity and adapted to the vertical insertion hole.

[0018] As a preferred embodiment of the fluidized pneumatic ash conveying pipe connection device for the low-pressure energy-saving unit described in this invention, the insertion assembly further includes a spring disposed on the vertical insertion rod and connected to the inner wall of the cavity, and a horizontal plate disposed on the vertical insertion rod.

[0019] The beneficial effects of the present invention are as follows: by setting up a connection unit, the fixed connection between the inclined pipe and the ash conveying pipe is achieved by using the fixing component, positioning component, sealing component and plugging component on the connection unit, and there is no need to open an inclined hole on the ash conveying pipe, which reduces the installation difficulty and the cost, and has strong practicality. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

[0022] Figure 2 This is a schematic diagram of the main unit of the present invention.

[0023] Figure 3 This is a schematic diagram of the structure of the fixing component of the present invention.

[0024] Figure 4This is a schematic diagram of the positioning component and the sealing component of the present invention.

[0025] Figure 5 This is a schematic diagram of the external thread structure of the present invention.

[0026] Figure 6 This is a schematic diagram of the positioning component of the present invention.

[0027] Figure 7 This is a schematic diagram of the sealing component of the present invention.

[0028] Figure 8 This is a schematic diagram of the structure of the plug-in assembly of the present invention.

[0029] Figure 9 For the present invention Figure 8 Enlarged view of point A in the middle. Detailed Implementation

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0032] 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 phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0033] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0034] Example 1, referring to Figures 1-9The first embodiment of the present invention provides a low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device. This device includes a main body unit 100, including an ash conveying pipe 101, a rectangular opening 102 disposed on the ash conveying pipe 101, and an inclined pipe 103 disposed above the ash conveying pipe 101; and a connection unit 200, including a fixing component 201 disposed on the ash conveying pipe 101 and cooperating with the rectangular opening 102, a positioning component 202 disposed on the fixing component 201 and cooperating with the inclined pipe 103, a sealing component 203 disposed on the positioning component 202 and cooperating with the inclined pipe 103, and a plugging component 204 disposed on the sealing component 203 and cooperating with the positioning component 202.

[0035] The rectangular opening 102 is located on the top of the outer surface of the ash conveying pipe 101, and at least four rectangular openings 102 are provided. The inclined pipe 103 is connected to the ash conveying pipe 101 through the connecting unit 200.

[0036] In use, the positioning component 202 can be centered on the ash conveying pipe 101 by fixing component 201, so that the positioning component 202 corresponds to the position of the rectangular opening 102. The sealing component 203 is connected to the positioning component 202 to seal the rectangular opening 102. Then, the positioning component 202 and the sealing component 203 are fixed by plugging component 204, so that the inclined pipe 103 is fixedly installed on the ash conveying pipe 101.

[0037] Example 2, refer to Figures 1-7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the fixing component 201 includes an upper half ring 201a and a lower half ring 201b disposed on the ash conveying pipe 101 and located on both sides of the rectangular opening 102, and a fixing bolt 201c disposed on the upper half ring 201a and connected to the lower half ring 201b; wherein the inner surfaces of the upper half ring 201a and the lower half ring 201b are both in contact with the outer surface of the ash conveying pipe 101, and the upper half ring 201a and the lower half ring 201b are fixedly connected by the fixing bolt 201c.

[0038] Furthermore, a connecting rod 201d is provided on the lower half ring 201b, and a counterweight ball 201e is provided on the connecting rod 201d. The connecting rod 201d is fixedly connected to the center of the bottom of the outer surface of the lower half ring 201b, and the bottom end of the connecting rod 201d is fixedly connected to the counterweight ball 201e. When the fixing bolt 201c is not fully tightened, the counterweight ball 201e can be positioned directly below the ash conveying pipe 101 after the fixing component 201 is fitted onto the ash conveying pipe 101, due to the influence of gravity.

[0039] Furthermore, the positioning component 202 includes a connecting plate 202a disposed between the two upper half-rings 201a, a positioning plate 202b disposed on the connecting plate 202a, and a rectangular positioning groove 202c disposed on the connecting plate 202a. The connecting plate 202a is positioned opposite to the counterweight ball 201e, so that when the counterweight ball 201e is directly below the ash conveying pipe 101, the connecting plate 202a is directly above the ash conveying pipe 101. The bottom of the connecting plate 202a is set with an arc that matches the outer surface of the ash conveying pipe 101, so as to better fit and connect to the outer surface of the ash conveying pipe 101. The rectangular positioning groove 202c is opened on the connecting plate 202a. After the fixing component 201 is fixed, the rectangular positioning groove 202c can be used to assist the operator in opening a rectangular opening 102 on the ash conveying pipe 101, which is more convenient to use. A rubber pad can be installed at the bottom of the connecting plate 202a to enhance the sealing between the connecting plate 202a and the ash conveying pipe 101.

[0040] Furthermore, the positioning assembly 202 also includes a placement groove 202d disposed on the positioning plate 202b and cooperating with the inclined tube 103, an internal thread 202e disposed on the inner wall of the placement groove 202d, and a sealing half-ring 202f disposed on the inner wall of the placement groove 202d and located on one side of the internal thread 202e; wherein, one side of the positioning plate 202b is inclined at 35°, and the placement groove 202d is also inclined at 35° on the positioning plate 202b.

[0041] Furthermore, the sealing assembly 203 includes a sealing plate 203a disposed above the connecting plate 202a, a merging plate 203b disposed on the sealing plate 203a and cooperating with the positioning plate 202b, and a rectangular connecting groove 203c disposed on the sealing plate 203a and adapted to the rectangular positioning groove 202c; wherein, the sealing plate 203a and the connecting plate 202a are tightly fitted together, and a rubber gasket can be provided on the side where the sealing plate 203a and the connecting plate 202a are connected to enhance the sealing performance of the connection. The merging plate 203b and the positioning plate 202b are tightly fitted together, and a rubber gasket can be provided on the side where the sealing plate 203a and the connecting plate 202a are connected to enhance the sealing of the connection. A rubber gasket can also be provided on the side where the merging plate 203b and the positioning plate 202b are connected to enhance the sealing of the connection. The sides where the merging plate 203b and the positioning plate 202b are fitted together are both inclined at 35°. When the sealing component 203 and the positioning component 202 are fully fitted together, the positions of the connecting groove and the rectangular positioning groove 202c correspond to each other.

[0042] Furthermore, the sealing assembly 203 also includes a placement groove 203d disposed on the merging plate 203b and cooperating with the inclined tube 103, an internal thread 203e disposed on the inner wall of the placement groove 203d and cooperating with the internal thread 202e, and a sealing half-ring 203f disposed on the inner wall of the placement groove 203d and located on one side of the internal thread 203e. The inclined tube 103 is provided with an external thread 203g that mates with the internal thread 202e and the internal thread 203e. When the sealing assembly 203 and the positioning assembly 202 are fully fitted, the placement groove 202d and the placement groove 203d form a circular hole that fits the inclined tube 103, and the internal thread 202e and the internal thread 203e are connected together. They can be threaded together with the external thread 203g on the inclined tube 103 to install the inclined tube 103.

[0043] After the sealing component 203 and the positioning component 202 are fully fitted, the sealing half ring 1 202f and the sealing half ring 203f will form a complete ring, which can ensure the sealing of the inclined tube 103 connection when the inclined tube 103 is installed in the future.

[0044] In use, firstly, the upper half ring 201a and the lower half ring 201b are fixedly connected to the outer surface of the ash conveying pipe 101 using fixing bolts 201c. When the fixing bolts 201c are not fully tightened, the upper half ring 201a and the lower half ring 201b will automatically adjust their positions under the influence of the counterweight ball 201e, so that the counterweight ball 201e is located directly below the ash conveying pipe 101, thus ensuring that the connecting plate 202a is located directly above the ash conveying pipe 101. Then, the fixing bolts 201c are fully tightened, and the rectangular positioning groove 202c assists the operator. A rectangular opening 102 is made on the ash conveying pipe 101. After the rectangular opening 102 is made, the connecting plate 202a, the sealing plate 203a, the positioning plate 202b and the merging plate 203b are tightly connected together by the plug-in assembly 204. Finally, the inclined pipe 103 is connected in the ash conveying pipe 101 through the placement groove 1 202d, the placement groove 2 203d, the connecting groove, the rectangular positioning groove 202c and the rectangular opening 102. The inclined pipe 103 is connected by external thread 203g, internal thread 1 202e and internal thread 2 203e to prevent the inclined pipe 103 from falling off.

[0045] The remaining structure is the same as that in Example 1.

[0046] Example 3, referring to Figures 6-9This is the third embodiment of the present invention, which differs from the second embodiment in that: the plug-in assembly 204 includes an oblique insertion hole 204a disposed on the positioning assembly 202 and a vertical insertion hole 204b disposed on the connecting plate 202a; wherein, the oblique insertion hole 204a is formed on the inclined surface of the positioning plate 202b, and the number of oblique insertion holes 204a is at least six, and three are arranged in a group to be positioned on both sides of the first groove 202d; the vertical insertion hole 204b is formed on the top of the connecting plate 202a, and the number of vertical insertion holes 204b is at least six, and three are arranged in a group to be positioned on both sides of the rectangular positioning groove 202c.

[0047] Furthermore, the plug-in assembly 204 also includes an angled insertion rod 204c disposed on the merging plate 203b and adapted to the angled insertion hole 204a, a cavity 204d disposed on the sealing plate 203a, and a vertical insertion rod 204e disposed inside the cavity 204d and adapted to the vertical insertion hole 204b; wherein, the angled insertion rod 204c is fixedly connected to the inclined surface of the merging plate 203b, and the number of angled insertion rods 204c is the same as the number of angled insertion holes 204a, and the position of the angled insertion rod 204c corresponds to the position of the angled insertion hole 204a; the number of cavities 204d is at least six, and three are grouped together and respectively located on both sides of the connecting groove; the number of vertical insertion rods 204e is the same as the number of vertical insertion holes 204b, and the position of the vertical insertion rod 204e corresponds to the position of the vertical insertion hole 204b.

[0048] Furthermore, the insertion assembly 204 also includes a spring 204f disposed on the vertical insertion rod 204e and connected to the inner wall of the cavity 204d, and a horizontal plate 204g disposed on the vertical insertion rod 204e; wherein, the bottom end of the vertical insertion rod 204e is rounded to cooperate with the spring 204f for connection; a horizontal plate 204g is fixedly connected between the top ends of each group of three vertical connecting rods 201d.

[0049] In use, after the upper half ring 201a and the lower half ring 201b are fixed in position, the sealing plate 203a is attached to the top of the connecting plate 202a and moved, so that the vertical insertion rod 204e compresses the spring 204f and fully enters the vertical insertion hole 204b, and the inclined insertion rod 204c also fully enters the inclined insertion hole 204a. The inclined tube 103 can then be installed and connected to the ash conveying pipe 101. The top of the inclined tube 103 is provided with a flange. After connecting the flange to the connecting pipe on the pneumatic conveyor, the ash conveying operation can be carried out.

[0050] The remaining structure is the same as that in Example 2.

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims. Furthermore, for the purpose of providing a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features not relevant to the currently considered best mode for carrying out the invention, or those features not relevant to implementing the invention) may be omitted.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device, characterized in that: include, The main unit (100) includes an ash conveying pipe (101), a rectangular opening (102) disposed on the ash conveying pipe (101), and an inclined pipe (103) disposed above the ash conveying pipe (101); The connecting unit (200) includes a fixing component (201) disposed on the ash conveying pipe (101) and cooperating with the rectangular opening (102), a positioning component (202) disposed on the fixing component (201) and cooperating with the inclined pipe (103), a blocking component (203) disposed on the positioning component (202) and cooperating with the inclined pipe (103), and a plugging component (204) disposed on the blocking component (203) and cooperating with the positioning component (202). The fixing assembly (201) includes an upper half ring (201a) and a lower half ring (201b) disposed on the ash conveying pipe (101) and located on both sides of the rectangular opening (102), and a fixing bolt (201c) disposed on the upper half ring (201a) and connected to the lower half ring (201b); The positioning component (202) includes a connecting plate (202a) disposed between the two upper half rings (201a), a positioning plate (202b) disposed on the connecting plate (202a), a placement groove (202d) disposed on the positioning plate (202b) and cooperating with the inclined tube (103), and a rectangular positioning groove (202c) disposed on the connecting plate (202a). One side of the positioning plate (202b) is inclined at 35°, and the placement groove (202d) is also inclined at 35° on the positioning plate (202b). The sealing assembly (203) includes a sealing plate (203a) disposed above the connecting plate (202a), a merging plate (203b) disposed on the sealing plate (203a) and cooperating with the positioning plate (202b), and a rectangular connecting groove (203c) disposed on the sealing plate (203a) and adapted to the rectangular positioning groove (202c); The plug-in assembly (204) includes an angled insertion hole (204a) disposed on the positioning assembly (202) and a vertical insertion hole (204b) disposed on the connecting plate (202a).

2. The low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device according to claim 1, characterized in that: A connecting rod (201d) is provided on the lower half ring (201b), and a counterweight ball (201e) is provided on the connecting rod (201d).

3. The low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device according to claim 2, characterized in that: An internal thread (202e) is provided on the inner wall of the placement groove (202d), and a sealing half-ring (202f) is provided on the inner wall of the placement groove (202d) and located on one side of the internal thread (202e).

4. The low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device according to claim 3, characterized in that: The sealing assembly (203) further includes a placement groove two (203d) disposed on the merging plate (203b) and cooperating with the inclined tube (103), an internal thread two (203e) disposed on the inner wall of the placement groove two (203d) and cooperating with the internal thread one (202e), and a sealing half ring two (203f) disposed on the inner wall of the placement groove two (203d) and located on one side of the internal thread two (203e). The inclined tube (103) is provided with an external thread (203g) that cooperates with the internal thread one (202e) and the internal thread two (203e).

5. The low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device according to claim 4, characterized in that: The plug-in assembly (204) further includes an angled insertion rod (204c) disposed on the merging plate (203b) and adapted to the angled insertion hole (204a), a cavity (204d) disposed on the sealing plate (203a), and a vertical insertion rod (204e) disposed inside the cavity (204d) and adapted to the vertical insertion hole (204b).

6. The low-pressure energy-saving unit fluidized pneumatic ash conveying pipe connection device according to claim 5, characterized in that: The insertion assembly (204) further includes a spring (204f) disposed on the vertical insertion rod (204e) and connected to the inner wall of the cavity (204d), and a horizontal plate (204g) disposed on the vertical insertion rod (204e).

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