Urea denitration agent spraying anti-blocking device

Abstract

The invention discloses a urea denitration agent spraying anti-blocking device, and belongs to the technical field of anti-blocking devices, the urea denitration agent spraying anti-blocking device comprises: a discharge pipe, the outer wall of which is provided with an impact part; the mounting sleeve is arranged on the discharging pipe in a sleeving manner and is elastically connected with the discharging pipe; the pressure sensing block is elastically mounted in the discharging pipe and is used for sensing the pressure in the discharging pipe; the pressure sensing block is in transmission connection with the mounting sleeve; the pressure sensing block drives the mounting sleeve to move in the direction away from the impact part and accumulate force; and after the pressure sensing block restores to the initial position, the mounting sleeve can move towards the direction close to the impact part and impact the impact part. Whether blockage occurs in the discharging pipe or not is automatically sensed through the pressure sensing block, when blockage occurs, vibration generated by impact between the mounting sleeve and the discharging pipe impacts the blockage adsorbed at the pipe opening of the discharging pipe, and particles blocked at the pipe opening of the discharging pipe are eliminated.

Description

Technical Field

[0001] The invention relates to the technical field of anti-clogging devices, in particular to a urea denitrification agent injection anti-clogging device. Background Art

[0002] Air flow interference at the outlet is easy to gather. However, during the long-term spraying process, the inner wall of the discharge pipe is easy to absorb dust particles, especially when dealing with relatively fine or sticky dust. These particles gradually accumulate and may form a blockage in the discharge pipe. When the discharge pipe is partially or completely blocked, the blockage will reduce the gas pressure in the discharge pipe. The drop in pressure directly leads to a decrease in the spraying effect, further affecting the discharge effect of the discharge pipe. In this case, the efficiency of the discharge pipe is significantly reduced, and it may even be necessary to stop the machine to clean the pipe, affecting the normal production process. Summary of the invention

[0003] 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.

[0004] In view of the above problems and / or the problems existing in the prior art, the present invention is proposed.

[0005] Therefore, the problem to be solved by the present invention is how to solve the problem that particles in the discharge pipe are adsorbed onto the pipe wall at the outlet and gradually accumulate and become blocked.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a urea denitrification agent injection anti-blocking device, comprising a discharge pipe, an impact portion is provided on the outer wall of which; a mounting sleeve, which is sleeved on the discharge pipe and elastically connected to the discharge pipe; a pressure-sensing block, which is elastically mounted inside the discharge pipe and is used to sense the pressure inside the discharge pipe; the pressure-sensing block is transmission-connected with the mounting sleeve; the pressure-sensing block drives the mounting sleeve to move in a direction away from the impact portion and accumulates force; when the pressure-sensing block returns to its initial position, the mounting sleeve can move in a direction close to the impact portion and impact the impact portion.

[0007] As a preferred solution of the urea denitrification agent injection anti-blocking device of the present invention, it further includes a switch block; a first mounting groove is provided on the outer wall of the discharge pipe, and the switch block is elastically installed in the first mounting groove, one end of the switch block extends into the discharge pipe and is used to sense the pressure in the discharge pipe, and the other end of the switch block is provided with a first ratchet, and a first annular ratchet groove is provided on the inner wall of the mounting sleeve, and the first ratchet can be engaged with the first annular ratchet groove.

[0008] As a preferred embodiment of the urea denitration agent injection anti-clogging device of the present invention, further comprising a return spring, the return spring is coaxially arranged with the discharge pipe, and the inner diameter of the return spring is larger than the outer diameter of the discharge pipe; both ends of the return spring are respectively clamped with the discharge pipe and the mounting sleeve.

[0009] As a preferred embodiment of the urea denitration agent injection anti-clogging device of the present invention, further comprising a limiting block, a second installation groove is formed on the outer peripheral wall of the discharge pipe, and the limiting block is elastically installed in the second installation groove; a second annular ratchet groove is formed on the inner wall of the mounting sleeve, and a second ratchet tooth is arranged on one side of the limiting block facing the mounting sleeve, and the second ratchet tooth can be engaged with the second annular ratchet groove.

[0010] As a preferred embodiment of the urea denitration agent injection anti-clogging device of the present invention, a third installation groove is formed on the inner peripheral wall of the discharge pipe, and the pressure-sensitive block is elastically installed in the third installation groove; when the urea denitration agent injection anti-clogging device discharges material, the pressure in the discharge pipe increases, and the pressure-sensitive block can move towards the mounting sleeve; when the urea denitration agent injection anti-clogging device stops discharging material, the pressure in the discharge pipe decreases, and the pressure-sensitive block can move away from the mounting sleeve.

[0011] As a preferred embodiment of the urea denitration agent injection anti-clogging device of the present invention, the elastic force received by the switch block is less than the elastic force received by the pressure-sensitive block.

[0012] As a preferred embodiment of the urea denitration agent injection anti-clogging device of the present invention, an annular groove is formed on the inner peripheral wall of the mounting sleeve, and the distance from the annular surface of the annular groove to the discharge pipe gradually decreases from top to bottom; a pressing column is arranged on the pressure-sensitive block, and the pressing column extends to the outside of the discharge pipe, and the pressing column can be in contact with the annular surface of the annular groove; when the pressure-sensitive block moves towards the mounting sleeve, the mounting sleeve moves away from the impact part.

[0013] As a preferred embodiment of the urea denitration agent injection anti-clogging device of the present invention, further comprising a transmission rod; a mounting hole is formed on the discharge pipe, the transmission rod is elastically installed in the mounting hole, a wedge-shaped groove is formed at the bottom of the pressing column, a wedge-shaped block is arranged at the top of the switch block, and both ends of the transmission rod are respectively in contact with the wedge-shaped groove and the wedge-shaped block.

[0014] The beneficial effects of the present invention are as follows: The pressure-sensitive block automatically senses whether there is a blockage in the discharge pipe. When a blockage occurs, the vibration generated by the impact between the mounting sleeve and the discharge pipe impacts the blockage adsorbed at the pipe orifice of the discharge pipe, eliminating the blocked particles at the pipe orifice of the discharge pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0016] Figure 1 It is a structural diagram of a urea denitration agent spraying anti-blocking device.

[0017] Figure 2 It is a cross-sectional view of a urea denitration agent spraying anti-blocking device. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention with reference to the drawings of the specification.

[0019] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Those skilled in the art can make similar generalizations without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0020] Secondly, the present invention will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present invention in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0021] Furthermore, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that can be included in at least one implementation manner 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 separate or alternative embodiment that excludes other embodiments.

[0022] Embodiment 1

[0023] Refer to Figure 1 and Figure 2, which is the first embodiment of the present invention, and this embodiment provides a urea denitrification agent injection anti-blocking device, including a discharge pipe 100, a mounting sleeve 200 and a sensing block 300; the discharge pipe 100 is used to install the mounting sleeve 200 and the sensing block 300; the mounting sleeve 200 can move axially relative to the discharge pipe 100, and the mounting sleeve 200 can collide with the discharge pipe 100 and impact the blockage in the discharge pipe 100, thereby eliminating the blockage; the sensing block 300 is used to sense the pressure in the discharge pipe 100.

[0024] Specifically, an impact portion 101 is provided on the outer wall of the discharge pipe 100, and the impact portion 101 is annular in shape and coaxially arranged with the discharge pipe 100; the mounting sleeve 200 is sleeved on the discharge pipe 100 and elastically connected with the discharge pipe 100; the pressure sensing block 300 is elastically mounted in the discharge pipe 100 and is used to sense the pressure in the discharge pipe 100; the pressure sensing block 300 is transmission-connected with the mounting sleeve 200; when the discharge pipe 100 sprays normally, the pressure sensing block 300 can drive the mounting sleeve 200 to move in a direction away from the impact portion and accumulate force; and when the discharge pipe 100 stops spraying, the pressure in the discharge pipe 100 decreases, and after the pressure sensing block 300 returns to its initial position, the mounting sleeve 200 moves in a direction close to the impact portion 101 and strikes the impact portion 101, and the particles blocked in the discharge pipe 100 are deblocked by the vibration generated by the impact.

[0025] Example 2

[0026] Reference Figure 1 and Figure 2 , which is the second embodiment of the present invention, and this embodiment is based on embodiment 1.

[0027] Preferably, it also includes a switch block 400; a first mounting groove 102 is provided on the outer peripheral wall of the discharge pipe 100, and the switch block 400 is elastically installed in the first mounting groove 102, one end of the switch block 400 extends into the discharge pipe 100 and is used to sense the pressure in the discharge pipe 100, when the discharge pipe 100 sprays out material, the pressure in the discharge pipe 100 increases, and the switch block 400 is affected by the pressure in the pipe and moves in a direction away from the central axis of the discharge pipe 100, and the other end of the switch block 400 extends into the discharge pipe 100 and is used to sense the pressure in the discharge pipe 100. A first ratchet tooth 401 is provided at one end, and a first annular ratchet groove 201 is opened on the inner wall of the mounting sleeve 200. The first ratchet tooth 401 is engaged with the first annular ratchet groove 201, and the axial movement of the mounting sleeve 200 is hindered at this time; when blockage occurs in the discharge pipe 100, the pressure in the pipe is reduced, and the switch block 400 can move toward the direction close to the central axis of the discharge pipe 100, and the first ratchet tooth 401 is disengaged from the first annular ratchet groove 201, and the axial movement of the mounting sleeve 200 is relieved.

[0028] Preferably, a return spring 500 is further included. The return spring 500 is coaxially arranged with the discharge pipe 100, and the inner diameter of the return spring 500 is larger than the outer diameter of the discharge pipe 100. The two ends of the return spring 500 are respectively clamped with the discharge pipe 100 and the mounting sleeve 200. The return spring 500 is used for axially storing energy for the mounting sleeve 200.

[0029] Preferably, a limiting block 600 is further included. A second mounting groove 103 is formed on the outer peripheral wall of the discharge pipe 100. The limiting block 600 is elastically mounted in the second mounting groove 103, and the limiting block 600 can also move in a direction away from or close to the center of the discharge pipe 100 under the influence of the pressure in the discharge pipe 100. A second annular ratchet groove 202 is formed on the inner wall of the mounting sleeve 200. A second ratchet tooth 601 is arranged on the side of the limiting block 600 facing the mounting sleeve 200. The second ratchet tooth 601 can be engaged with the second annular ratchet groove 202. After the discharge pipe 100 stops working, the limiting block 600 can move in a direction close to the center of the discharge pipe 100, and the second ratchet tooth 601 is disengaged from the second annular ratchet groove 202. The mounting sleeve 200 quickly resets downward under the action of the return spring 500 and impacts the impact portion 101.

[0030] Preferably, a third mounting groove 104 is formed on the inner peripheral wall of the discharge pipe 100. The pressure-sensitive block 300 is elastically mounted in the third mounting groove 104. When the urea denitration agent spraying anti-blocking device sprays, the pressure in the discharge pipe 100 increases, and the pressure-sensitive block 300 moves in a direction close to the mounting sleeve 200. When the urea denitration agent spraying anti-blocking device stops spraying, the pressure in the discharge pipe 100 decreases, and the pressure-sensitive block 300 moves in a direction away from the mounting sleeve 200, so that the pressure-sensitive block 300 is disengaged from the contact state with the mounting sleeve 200, that is, the pressure-sensitive block 300 does not hinder the downward reset of the mounting sleeve 200.

[0031] Preferably, the elastic force received by the switch block 400 is smaller than the elastic force received by the pressure-sensitive block 300. Therefore, when the discharge pipe 100 starts spraying, the switch member 400 will move to the right prior to the sensing block 300, that is, when the discharge pipe 100 sprays normally, the pressure in the pipe increases, resulting in the switch member 400 moving outwards first, and the first ratchet tooth 401 on the switch member 400 is first engaged with the first annular ratchet groove 201 of the mounting sleeve 200, so as to limit the axial movement of the mounting sleeve 200 when the discharge pipe 100 works normally.

[0032] Preferably, an annular groove 203 is formed on the inner peripheral wall of the installation sleeve 200, and the distance from the annular surface of the annular groove 203 to the discharge pipe 100 gradually decreases from top to bottom; a pressing column 301 is provided on the pressure-sensitive block 300, the pressing column 301 extends to the outside of the discharge pipe 100, and the pressing column 301 can be in contact with the annular surface of the annular groove 203; when the pressure-sensitive block 300 can move towards the installation sleeve 200, the pressing column 301 is squeezed against the annular surface, and the installation sleeve 200 moves away from the impact part 101, combined with the return spring 500, to axially store energy for the installation sleeve 200. And during this process, the second ratchet 601 can be engaged with the second annular ratchet groove 202.

[0033] Preferably, it further includes a transmission rod 700; an installation hole 105 is formed in the discharge pipe 100, the installation hole 105 is vertically arranged, the transmission rod 700 is elastically installed in the installation hole 105, a wedge-shaped groove 301a is formed at the bottom of the pressing column 301, and a wedge-shaped block 602 is provided at the top of the switch block 400. The two ends of the transmission rod 700 are respectively in contact with the wedge-shaped groove 301a and the wedge-shaped block 602. Since the induction block 300 is not in contact with the annular surface of the annular groove 203 at the beginning, it also plays an insurance and buffering role to prevent the installation sleeve 200 from being directly pushed upward by the pressing column 301 under normal circumstances; since the elastic force received by the switch block 400 is less than the elastic force received by the pressure-sensitive block 300, that is, when the discharge pipe 100 sprays normally, the first ratchet 401 on the switch 400 first engages with the first annular ratchet groove 201 of the installation sleeve 200, so as to limit the axial movement of the installation sleeve 200 when the discharge pipe 100 is working normally. During the process of the first ratchet 401 gradually engaging with the first annular ratchet groove 201, the switch block 400 moves outward. During this process, through the transmission of the transmission rod 700, the pressing column 301 on the induction block 300 is pushed to fit with the annular surface.

[0034] To facilitate understanding of the technical solution of the present invention, a brief description of its working process is given below:

[0035] Since the elastic force on the switch 400 is less than the elastic force on the induction block 300, when the discharge pipe 100 starts normal spraying, the switch 400 will move to the right prior to the induction block 300; that is, when the discharge pipe 100 sprays normally, the pressure inside the pipe increases, causing the switch 100 to move outward first, and the first ratchet 401 on the switch 100 first engages with the first annular ratchet groove 201 of the installation sleeve 200, thereby restricting the axial movement of the installation sleeve 200;

[0036] When the discharge pipe 100 becomes blocked, the pressure inside the discharge pipe 100 decreases. At this time, the switch member 400 resets a certain distance, the installation sleeve 200 is released from axial restriction, and the sensing block 300 moves outward under the action of pressure. Then, the sensing block 300 squeezes the installation sleeve 200 to move upward. During this process, the return spring 500 is used to store axial force for the installation sleeve 200.

[0037] During the upward movement of the installation sleeve 200, the second annular ratchet groove 202 inside the installation sleeve 200 engages with the limiting block 600 on the discharge pipe 100.

[0038] When the discharge pipe 100 stops spraying, the limiting block 600 moves inward to release the axial restriction of the installation sleeve 200. The installation sleeve 200 quickly resets downward to impact the impact portion 101 of the discharge pipe 100 for vibration blockage removal.

[0039] Importantly, it should be noted that the structures and arrangements of the present application shown in multiple different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who refer to this disclosure should easily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application (for example, the dimensions, scales, structures, shapes and proportions of various components, as well as parameter values (such as temperature, pressure, etc.), installation arrangements, use of materials, color, orientation changes, etc.). For example, an 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, number or position of discrete elements can be changed or altered. Therefore, all such modifications are intended to be included within 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 "means-plus-function" clause is intended to cover the structures that perform the recited function herein, and not only structurally equivalent but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangements of the exemplary embodiments without departing from the scope of the present invention. Therefore, the present invention is not limited to specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0040] In addition, in order to provide a concise description of the exemplary embodiments, not all features of the actual embodiments may be described (i.e., those features that are not relevant to the currently considered best mode of implementing the present invention, or those features that are not relevant to the implementation of the present invention).

[0041] It should be understood that, during the development of any actual implementation, such as in any engineering or design project, a large number of specific implementation decisions can be made. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, without undue experimentation, such development efforts will be routine work in design, manufacturing, and production.

[0042] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A urea denitrification agent injection anti-blocking device, characterized in that: include, A discharge pipe (100) having an impact portion (101) disposed on its outer wall; An installation sleeve (200) is sleeved on the discharge pipe (100) and elastically connected to the discharge pipe (100); A pressure sensing block (300) is elastically mounted inside the discharge pipe (100) and is used to sense the pressure inside the discharge pipe (100); the pressure sensing block (300) is transmission-connected to the mounting sleeve (200); The pressure-sensing block (300) can drive the installation sleeve (200) to move in a direction away from the impact portion (101) and accumulate force; when the pressure-sensing block (300) returns to an initial position, the installation sleeve (200) can move in a direction close to the impact portion (101) and impact the impact portion (101).

2. The urea denitrification agent injection anti-clogging device according to claim 1, characterized in that: It also includes a switch block (400); a first installation groove (102) is opened on the outer wall of the discharge pipe (100), and the switch block (400) is elastically installed in the first installation groove (102); one end of the switch block (400) extends into the discharge pipe (100) and is used to sense the pressure in the discharge pipe (100).

3. The urea denitrification agent injection anti-clogging device according to claim 2, characterized in that: The other end of the switch block (400) is provided with a first ratchet tooth (401), and the inner wall of the mounting sleeve (200) is provided with a first annular ratchet groove (201), and the first ratchet tooth (401) can be engaged with the first annular ratchet groove (201).

4. The urea denitrification agent injection anti-clogging device as described in claim 2 or 3, characterized in that: It also includes a return spring (500), which is coaxially arranged with the discharge pipe (100), and the inner diameter of the return spring (500) is larger than the outer diameter of the discharge pipe (100); the two ends of the return spring (500) are respectively clamped with the discharge pipe (100) and the installation sleeve (200).

5. The urea denitrification agent injection anti-clogging device according to claim 4, characterized in that: It also includes a limit block (600), a second installation groove (103) is opened on the outer peripheral wall of the discharge pipe (100), and the limit block (600) is elastically installed in the second installation groove (103); a second annular ratchet groove (202) is opened on the inner wall of the installation sleeve (200), and a second ratchet (601) is provided on the side of the limit block (600) facing the installation sleeve (200), and the second ratchet (601) can be engaged with the second annular ratchet groove (202).

6. The urea denitrification agent injection anti-clogging device according to claim 5, characterized in that: A third installation groove (104) is provided on the inner peripheral wall of the discharge pipe (100), and the pressure sensing block (300) is elastically installed in the third installation groove (104); When the urea denitrification agent injection anti-clogging device is discharging, the pressure in the discharge pipe (100) increases, and the pressure sensing block (300) can move in a direction close to the installation sleeve (200); When the urea denitrification agent injection anti-clogging device stops discharging material, the pressure in the discharge pipe (100) decreases, and the pressure sensing block (300) can move in a direction away from the installation sleeve (200).

7. The urea denitrification agent injection anti-clogging device according to claim 6, characterized in that: The elastic force exerted on the switch block (400) is smaller than the elastic force exerted on the pressure sensing block (300).

8. The urea denitrification agent injection anti-clogging device according to claim 7, characterized in that: An annular groove (203) is provided on the inner peripheral wall of the installation sleeve (200), and the distance from the annular surface of the annular groove (203) to the discharge pipe (100) gradually decreases from top to bottom.

9. The urea denitrification agent injection anti-clogging device according to claim 8, characterized in that: The pressure-sensing block (300) is provided with a pressure-resisting column (301), and the pressure-resisting column (301) extends to the outside of the discharge pipe (100). The pressure-resisting column (301) can contact the annular surface of the annular groove (203); when the pressure-sensing block (300) moves in a direction approaching the installation sleeve (200), the installation sleeve (200) moves in a direction away from the impact portion (101).

10. The urea denitrification agent injection anti-clogging device according to claim 9, characterized in that: It also includes a transmission rod (700); a mounting hole (105) is provided on the discharge pipe (100), and the transmission rod (700) is elastically installed in the mounting hole (105); a wedge-shaped groove (301a) is provided at the bottom of the pressure column (301), and a wedge-shaped block (602) is provided at the top of the switch block (400); and two ends of the transmission rod (700) are respectively in contact with the wedge-shaped groove (301a) and the wedge-shaped block (602).

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