CN114738499B

CN114738499B - Urea feed liquor device based on SCR denitration

Info

Publication number: CN114738499B
Application number: CN202210305761.2A
Authority: CN
Inventors: 黄伟; 侯志国
Original assignee: Huaneng International Power Jiangsu Energy Development Co Ltd; Nanjing Power Plant of Huaneng International Power Jiangsu Energy Development Co Ltd
Current assignee: Huaneng International Power Jiangsu Energy Development Co Ltd; Nanjing Power Plant of Huaneng International Power Jiangsu Energy Development Co Ltd
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2023-11-03
Anticipated expiration: 2042-03-24
Also published as: CN114738499A

Abstract

The application discloses a urea liquid inlet device based on SCR denitration, which comprises a reaction cylinder, wherein a solution inlet is arranged on the reaction cylinder; the solution inlet is connected with a connecting pipe, a radial valve shaft hole is arranged in the connecting pipe, and one end of the valve shaft hole penetrates through the connecting pipe; the connecting pipe is internally provided with a valve disc, the valve disc is provided with a valve shaft, the valve shaft is embedded into the valve shaft hole, and one end of the valve shaft penetrates through the valve shaft hole to the outside of the connecting pipe; the solution inlet pipe is connected with the connecting pipe through the fixing component and the connecting component, and the fixing component is connected with the connecting component; the fixing component comprises a fixing seat connected with the connecting pipe, the connecting component comprises a connecting seat connected with the solution inlet pipe, and a connecting column is arranged at one end, close to the fixing seat, of the connecting seat; wherein the connecting pipe possesses the function of ooff valve, when needs adjust the valve disc, needs pulling operation ring makes the locating pin break away from in the locating through-hole, then stirs the actuating lever, drives the regulation disc, through the terminal surface gear ring on the regulation disc, and then adjusts the valve disc.

Description

Urea feed liquor device based on SCR denitration

Technical Field

The application relates to the field of urea hydrolysis, in particular to a urea liquid inlet device based on SCR denitration.

Background

At present, in the environmental protection industry, the main stream technology in the flue gas denitration field adopts ammonia gas as a reducing agent to carry out chemical reaction with nitrogen oxides, so as to achieve the purpose of removing the nitrogen oxides. The ammonia is usually obtained by evaporating liquid ammonia, and the storage amount of the liquid ammonia above 10t is defined as a serious hazard source at present because the liquid ammonia is toxic, harmful, flammable and explosive, so that the ammonia obtained by evaporating the liquid ammonia has a great potential safety hazard. At present, a more common urea pyrolysis or hydrolysis ammonia production mode is adopted, but some acid intermediates, such as ammonium carbamate and the like, are generated in the urea hydrolysis process, the oxide film on the stainless steel surface can be seriously damaged by all the acid intermediates, the higher the temperature is, the stronger the corrosiveness is, and the pipeline system is blocked and corroded, so that the pipeline for conveying urea solution needs to be conveniently disassembled and installed so as to replace the damaged pipeline in time.

Disclosure of Invention

This section is intended to summarize some aspects of embodiments of the application and to briefly introduce some preferred embodiments, which may be simplified or omitted in this section, as well as the description abstract and the title of the application, to avoid obscuring the objects of this section, description abstract and the title of the application, which is not intended to limit the scope of this application.

The present application has been made in view of the above and/or problems occurring in the prior art.

Therefore, the technical problem to be solved by the application is that the urea solution causes blockage and corrosion of a pipeline system, so that the pipeline for conveying the urea solution needs to be conveniently disassembled and installed so as to replace the damaged pipeline in time.

In order to solve the technical problems, the application provides the following technical scheme: the urea liquid inlet device based on SCR denitration comprises a reaction cylinder, wherein a solution inlet is formed in the reaction cylinder; the solution inlet is connected with a connecting pipe, a radial valve shaft hole is arranged in the connecting pipe, and one end of the valve shaft hole penetrates through the connecting pipe; the valve shaft is embedded into the valve shaft hole, and one end of the valve shaft penetrates through the valve shaft hole to the outside of the connecting pipe;

the solution inlet pipe is connected with the connecting pipe through a fixing component and a connecting component, and the fixing component is connected with the connecting component; the fixing assembly comprises a fixing seat connected with the connecting pipe, the fixing seat is provided with a first through hole which penetrates through, the connecting assembly comprises a connecting seat connected with the solution inlet pipe, one end, close to the fixing seat, of the connecting seat is provided with a connecting column, and the connecting seat is provided with a second through hole which penetrates through.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: an adjusting pinion is arranged at one end of the valve shaft extending out of the connecting pipe; the outer surface of the connecting pipe is provided with a limiting annular groove, the limiting annular groove is provided with an adjusting disc, the adjusting disc is annular, the adjusting disc is provided with an end face gear ring, and the end face gear ring is connected with an adjusting pinion in a matched manner; the outer side of the adjusting disc is provided with a driving rod extending along the radial direction, the end face of the adjusting disc, which is far away from the adjusting pinion, is provided with a plurality of positioning slots uniformly distributed along the circumference, the connecting pipe is fixedly provided with a positioning block, the positioning block is provided with a positioning through hole extending along the axial direction of the connecting pipe, the positioning through hole is internally provided with a positioning pin, one end of the positioning pin is embedded into any positioning slot, and the other end of the positioning pin is provided with an operating ring; the positioning device is characterized in that a limiting circular groove is formed in the positioning through hole, the diameter of the limiting circular groove is larger than that of the positioning through hole, a shaft shoulder is arranged on the part, located in the limiting circular groove, of the positioning pin, and an elastic piece is arranged between the shaft shoulder and one end, far away from the positioning groove hole, of the limiting circular groove.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: the fixing seat is symmetrically provided with first long grooves extending along the axial direction, the first long grooves are communicated with the first through holes, first sliding blocks are arranged in the first long grooves, first sliding grooves are formed in the side faces of the first long grooves, first bosses are arranged on the side faces of the first sliding blocks, the first bosses are embedded into the first sliding grooves, and the first sliding blocks move in the first sliding grooves along the radial direction of the first through holes; the first sliding block is close to the connecting seat and is close to an edge chamfer of the first through hole to form a first slope.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: the side surface of the connecting column is provided with a rotating hole, a bolt is connected in the rotating hole in a rotating way, and the outer end of the bolt is provided with an inclined plane to form a wedge shape; the rotary hole is internally provided with a limiting hole, the bolt is provided with a limiting round table, and the limiting round table is embedded into the limiting hole.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: a first spring is arranged between the first sliding block and the first long groove; the fixing seat is also symmetrically provided with a second long groove extending along the axial direction, and an arc-shaped groove is arranged between the ends of the second long groove and the first long groove, which are positioned in the first through hole; a second sliding block is arranged in the second long groove, a second boss is arranged on the side face of the second sliding block, a second sliding groove is arranged on the side face of the second long groove, the second boss is embedded into the second sliding groove, the second sliding block moves in the second long groove along the radial direction of the first through hole, and an edge chamfer of the second sliding block, which is far away from the connecting seat and is close to the first through hole, forms a second slope; and a second spring is arranged between the second sliding block and the second long groove.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: the novel rotary table is characterized in that an annular groove is formed in the second through hole and is communicated with the limiting hole, the driven gear is connected with the limiting round table, a rotating piece is arranged in the annular groove and is provided with an end face gear which is meshed with the driven gear, a rotating ring extending out of the second through hole is arranged on the rotating piece, a limiting boss is arranged at the end of the rotating ring, a limiting hole is formed in the first through hole, and the outline of the limiting hole is consistent with that of the limiting boss.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: the annular groove is internally provided with a limiting arc groove, the rotating piece is provided with a protrusion, the protrusion is embedded into the limiting arc groove, the rotating range of the rotating piece is 0-90 degrees, and the rotating range of the bolt is 0-180 degrees; when the rotating piece rotates 90 degrees, the bolt rotates 180 degrees.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: the end fixedly connected with retaining ring that is close to the connecting seat of fixing base, be provided with the shrinkage pool on the retaining ring, the tip of connecting seat is provided with the sliding hole that corresponds, be provided with the inserted bar in the sliding hole, the sliding hole side is provided with the strip type groove that runs through, the inserted bar side is provided with the lug and passes the strip type groove.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: the connecting seat is sleeved with an adjusting ring, an annular groove is formed in the inner side of the adjusting ring, the protruding block is embedded into the annular groove, and a fourth spring is arranged between the inserted link and the bottom of the sliding hole.

As a preferable scheme of the urea liquid inlet device based on SCR denitration, the urea liquid inlet device based on SCR denitration comprises the following components: a third spring is arranged between the bulge and one end of the limiting arc groove.

The application has the beneficial effects that: a connecting pipe is arranged between the reaction cylinder and the urea solution pipeline, wherein the connecting pipe has the function of a switch valve, when a valve disc needs to be regulated, an operation circular ring needs to be pulled to enable a locating pin to be separated from the locating through hole, then a driving rod is stirred to drive a regulating disc, and a regulating pinion can be driven through an end face gear ring on the regulating disc so as to regulate the valve disc; and meanwhile, when the solution inlet pipe needs to be replaced, the fixing component and the connecting component are operated.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

fig. 1 is a schematic structural diagram of a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional structure of a connecting pipe in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a connecting pipe, a fixing assembly and a connecting assembly in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 4 is a schematic diagram of an internal structure of a connecting pipe in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 5 is a schematic diagram of a partial enlarged structure of fig. 4 in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 6 is a schematic cross-sectional structure diagram of a connecting pipe, a fixing assembly and a connecting assembly in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 7 is a schematic cross-sectional structure of a portion of the fixing component and the connecting component of fig. 6 in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

FIG. 8 is a schematic cross-sectional view of FIG. 7 in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 9 is a schematic diagram of a connection seat in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

FIG. 10 is a schematic cross-sectional view of FIG. 9 in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a fixing seat structure in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

fig. 12 is a schematic cross-sectional structure of a fixing seat in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application;

FIG. 13 is an exploded view of a fixing assembly and a connecting assembly of an SCR denitration-based urea liquid inlet device according to an embodiment of the present application;

fig. 14 is a schematic side view of a fixing component in a urea liquid inlet device based on SCR denitration according to an embodiment of the present application.

Detailed Description

In order that the above-recited objects, features and advantages of the present application will become more readily apparent, a more particular description of the application will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present application is not limited to the specific embodiments disclosed below.

In the following detailed description of the embodiments of the present application, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration only, and in which is shown by way of illustration only, and in which the scope of the application is not limited for ease of illustration. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the application. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to fig. 1-6, this embodiment provides a urea feed liquor device based on SCR denitration, including a reaction tube 100, the reaction tube 100 is the hydrolysis tower of urea hydrolysis among the prior art, and the reaction tube 100 bottom is provided with solution inlet 101, and solution inlet 101 is connected with connecting pipe 102, is provided with radial valve shaft hole 102a in the connecting pipe 102, and wherein one end in valve shaft hole 102a runs through connecting pipe 102, and one end that is valve shaft hole 102a is penetrating, and the other end is not penetrating.

The connecting pipe 102 is internally provided with a valve disc 103, the periphery of the valve disc 103 is spherical, the spherical diameter of the valve disc is consistent with the inner diameter of the connecting pipe 102, the valve disc 103 is provided with a valve shaft 103a, the valve shaft 103a is embedded into the valve shaft hole 102a, and one end of the valve shaft 103a passes through the valve shaft hole 102a to the outside of the connecting pipe 102; therefore, the inclination angle of the valve disc 103 can be controlled by operating the valve shaft 103a to rotate, and the flow rate of urea solution can be further controlled.

The end of the valve shaft 103a extending out of the connection tube 102 is provided with an adjusting pinion 104, and other gears may be used to drive the adjusting pinion 104.

In this embodiment, the outer surface of the connecting pipe 102 is provided with a limiting annular groove 102b, and the diameter of the limiting annular groove 102b is smaller than the outer diameter of the connecting pipe 102; the limiting annular groove 102b is provided with an adjusting disc 105, the adjusting disc 105 is annular, the adjusting disc 105 is provided with a face gear ring 105a, the face gear ring 105a is connected with the adjusting pinion 104 in a matched mode, and then the adjusting pinion 104 can be driven through the face gear ring 105a on the adjusting disc 105.

Further, a driving rod 105b extending along the radial direction is arranged outside the adjusting disc 105, and the adjusting disc 105 can be driven by pulling the driving rod 105 b.

The end face of the adjusting disc 105 far away from the adjusting pinion 104 is provided with a plurality of positioning slots 105c uniformly distributed along the circumference, the connecting pipe 102 is fixedly provided with a positioning block 106, the positioning block 106 is provided with a positioning through hole 106a extending along the axial direction of the connecting pipe 102, a positioning pin 107 is arranged in the positioning through hole 106a, one end of the positioning pin 107 is embedded into any one of the positioning slots 105c, and the other end of the positioning pin 107 is provided with an operating ring 107a, so that when one end of the positioning pin 107 is embedded into one of the positioning slots 105c, the rotational freedom degree of the adjusting disc 105 is limited, namely, the adjusting pinion 104 and the valve disc 103 are fixed.

Preferably, a limiting circular groove 106b is arranged in the positioning through hole 106a, the diameter of the limiting circular groove 106b is larger than that of the positioning through hole 106a, a shaft shoulder 107b is arranged at the part of the positioning pin 107 in the limiting circular groove 106b, the shaft shoulder 107b can prevent the positioning pin 107 from falling off from the positioning through hole 106a, and an elastic piece 108 is arranged between the shaft shoulder 107b and one end, far away from the positioning slot 105c, of the limiting circular groove 106 b. The elastic member 108 is a pressure elastic member, so that under the action of the elastic member 108, one end of the positioning pin 107 is embedded in the positioning through hole 106a, and when the valve disc 103 needs to be adjusted, the operating ring 107a needs to be pulled to disengage the positioning pin 107 from the positioning through hole 106a, and then the driving rod 105b needs to be shifted.

The urea solution enters the reaction cylinder through the solution inlet pipe 200 and is connected with the connecting pipe 102 through the fixing component 300 and the connecting component 400, wherein the fixing component 300 is connected with the connecting component 400; the fixing assembly 300 comprises a fixing seat 301 connected with the connecting pipe 102, the fixing seat 301 is provided with a first through hole 301a penetrating through, the connecting assembly 400 comprises a connecting seat 401 connected with the solution inlet pipe, one end, close to the fixing seat 301, of the connecting seat 401 is provided with a connecting column 401a, and the connecting seat 401 is provided with a second through hole 401b penetrating through.

In this embodiment, when the valve disc 103 needs to be adjusted, the operation ring 107a needs to be pulled to disengage the positioning pin 107 from the positioning through hole 106a, and then the driving rod 105b is shifted to drive the adjusting disc 105, and the adjusting pinion 104 can be driven by the face gear ring 105a on the adjusting disc 105, so as to adjust the valve disc 103.

Example 2

Referring to fig. 1 to 14, a second embodiment of the present application is based on the previous embodiment, and is different from the previous embodiment in that: the fixing assembly 300 comprises a fixing seat 301 connected with the connecting pipe 102 in a threaded connection manner, the fixing seat 301 is provided with a first through hole 301a penetrating through the fixing seat, the first through hole 301a is communicated with the connecting pipe 102, and the connecting assembly 400 comprises a connecting seat 401 connected with the solution inlet pipe 200 in a threaded connection manner; the connecting seat 401 is provided with a connecting column 401a near one end of the fixing seat 301, and the connecting seat 401 is provided with a second through hole 401b penetrating through. Thus, when the connection post 401a is embedded in the first through hole 301a, the first through hole 301a communicates with the second through hole 401b.

Further, the fixing seat 301 is symmetrically provided with first elongated slots 301b extending along an axial direction, that is, the first elongated slots 301b are provided with 2 and evenly distributed, the first elongated slots 301b are penetrated with the first through holes 301a, a first sliding block 302 is arranged in the first elongated slots 301b, a first sliding groove 301c is arranged on the side face of the first elongated slots 301b, a first boss 302a is arranged on the side face of the first sliding block 302, the first boss 302a is embedded into the first sliding groove 301c, the first sliding block 302 moves in the first sliding groove 301c along the radial direction of the first through holes 301a, when the first sliding block 302 is located at a position close to the axis of the first through holes 301a, the side face of the first sliding block 302 close to the first through holes 301a is an arc face and is consistent with the radius of the inner side face of the first through holes 301a, and the first sliding block 302 is close to the connecting seat 401 and an edge chamfer close to the first through holes 301a forms a first slope 302b.

Correspondingly, the side surface of the connecting column 401a is provided with two rotating holes 401c, two rotating holes 401c are uniformly distributed, the rotating holes 401c are rotationally connected with bolts 402, the bolts 402 can rotate in the rotating holes 401c, and inclined surfaces 402d are arranged at the outer ends of the bolts 402 to form a wedge shape; the end between the inclined surface 402d and the connecting post 401a is also a complete cylinder, and the length of the cylinder is smaller than the chamfer size of the first slope 302b, so that when the connecting post 401a is inserted into the first through hole 301a, the edge between the inclined surface 402d and the pin 402 first contacts the surface of the first slope 302b, and then the first slope 302b is pushed to keep the first slider 302 away from the center of the first through hole 301 a.

Wherein, the rotation hole 401c is internally provided with a first limit hole 401d, the bolt 402 is provided with a limit round table 402b, and the limit round table 402b is embedded into the first limit hole 401 d. The diameter of the limiting round table 402b is larger than that of the bolt 402, so that the bolt 402 is prevented from being separated.

Further, a first spring 303 is disposed between the first slider 302 and the first long groove 301b, the latch 402 is a pressure spring, and in an initial state, the first spring 303 pushes the first slider 302 and the first through hole 301a to form a cylindrical hole; the fixing seat 301 is further symmetrically provided with second elongated slots 301d extending along the axial direction, two second elongated slots 301d are uniformly provided, the size of the second elongated slots is identical to that of the first elongated slots 301b, and the first elongated slots 301b and the second elongated slots 301d are four in number and uniformly distributed in the first through holes 301 a.

The arc-shaped grooves 301e are arranged between the ends of the second long groove 301d and the first long groove 301b in the first through hole 301a, so that the number of the arc-shaped grooves 301e is two, and the height of the arc-shaped grooves 301e is consistent with the diameter of the bolt 402, so that when the bolt 402 passes over the first sliding block 302 and enters the arc-shaped grooves 301e, the first sliding block 302 is reset to play a limiting role on the bolt 402, and the bolt is prevented from being separated.

Further, a second slider 304 is disposed in the second long groove 301d, the structure of the second slider 304 is identical to that of the first slider 302, the installation direction of the second slider 304 is opposite to that of the first slider 302, a second boss 304a is disposed on the side surface of the second slider 304, a second sliding groove 301f is disposed on the side surface of the second long groove 301d, the second boss 304a is embedded in the second sliding groove 301f, and the second slider 304 moves in the second long groove 301d along the radial direction of the first through hole 301 a.

The mounting direction of the second slider 304 is opposite to the first slider 302 and is specifically embodied as: the second slider 304 is far away from the connecting seat 401 and is close to an edge chamfer of the first through hole 301a to form a second slope 304b; that is, the second slope 304b is located inside the first through hole 301a, that is, one end of the second slider 304 located at the end face of the first through hole 301a is a plane, so that when the connection seat 401 is connected, the latch 402 can only enter from the first long groove 301b, and when the latch is disengaged, the latch can only disengage from the second long groove 301 d. A second spring 305 is provided between the second slider 304 and the second long groove 301d, and acts in accordance with the first spring 303.

Further, an annular groove 401e is arranged in the second through hole 401b, the annular groove 401e is communicated with the first limit hole 401d, the limit round table 402b is connected with a driven gear 402c, a rotating piece 403 is arranged in the annular groove 401e, the rotating piece 403 is provided with a face gear 403a, and the face gear 403a is meshed with the driven gear 402c, so that the driven gear 402c and the bolt 402 can be driven to rotate through rotation of the face gear 403 a.

The rotating member 403 is provided with a rotating ring 403c extending out of the second through hole 401b, the rotating ring 403c and the rotating member 403 are integrally designed, the end portion of the rotating ring 403c is provided with a limiting boss 403d, in this embodiment, the limiting boss 403d is in a hexagonal boss shape, a second limiting hole 301g is provided in the first through hole 301a, the second limiting hole 301g is correspondingly in a hexagonal hole shape, and the limiting boss 403d can be embedded into the second limiting hole 301g, which is that the second limiting hole 301g can limit rotation of the limiting boss 403 d. The outline of the second limiting hole 301g is consistent with that of the limiting boss 403 d.

Further, a limiting arc groove 401f is further formed in the annular groove 401e, a protrusion 403b is arranged on the rotating member 403, the protrusion 403b is embedded into the limiting arc groove 401f, and the central angle of the limiting arc groove 401f should meet the requirement that the protrusion 403b can rotate 90 degrees, namely, the rotating range of the rotating member 403 is 0-90 degrees, and the rotating range of the bolt 402 is 0-180 degrees. And the rotation member 403 rotates 90 deg., the latch 402 rotates 180 deg.. Wherein a third spring 404 is disposed between the protrusion 403b and one end of the limit arc groove 401 f. The third spring 404 is a pressure spring, when the third spring 404 is in a stretched state, the protrusion 403b is located at one end of the limit arc groove 401f, at this time, the inclined surface 402d of the plug 402 faces the inside of the first through hole 301a, so when the connecting post 401a is inserted into the first through hole 301a, the edge between the inclined surface 402d and the plug 402 contacts the surface of the first slope 302b first, and then the first slope 302b can be pushed to make the first slider 302 far away from the center of the first through hole 301a until the plug 402 passes over the first slider 302 and is embedded into the first long groove 301b, and the first slider 302 resets to limit the plug 402.

The end of the fixing seat 301 near the connecting seat 401 is fixedly connected with a retainer ring 306, and the connection mode can be screw, welding or integrated design. The retainer ring 306 is provided with a concave hole 306a, the end part of the connecting seat 401 is provided with a corresponding sliding hole 401g, and the positions of the concave hole 306a and the sliding hole 401g meet the condition that when the connecting unit is connected, the two holes are overlapped; a plunger 405 is provided in the sliding hole 401g, and the plunger 405 can be inserted into the concave hole 306a to restrict rotation of the connection assembly when the connection unit is connected.

Further, a penetrating bar-shaped groove 401h is formed in the side face of the sliding hole 401g, a protruding block 405a is arranged on the side face of the inserting rod 405 and penetrates through the bar-shaped groove 401h, an adjusting ring 406 is sleeved outside the connecting seat 401, an annular groove 406a is formed in the inner side of the adjusting ring 406, the protruding block 405a is embedded into the annular groove 406a, and a fourth spring 407 is arranged between the inserting rod 405 and the bottom of the sliding hole 401 g. Thus, the adjustment ring 406 can be operated to disengage the plunger 405 from the recess 306a, thereby releasing the rotational restriction of the connection assembly.

Therefore, when the latch 402 passes over the first slider 302 and is embedded into the first long groove 301b, and the first slider 302 resets to limit the latch 402, the plunger 405 can be embedded into the concave hole 306a to limit the rotation of the connection assembly, and the limit boss 403d is embedded into the second limit hole 301 g; when the fixing assembly 300 and the connecting assembly 400 need to be separated, the adjusting ring 406 is operated to enable the inserting rod 405 to be separated from the concave hole 306a, the rotating connecting assembly 400 is arranged to enable the bolt 402 to move from the initial end of the arc-shaped groove 301e to the tail end of the arc-shaped groove 301e, at the moment, 90 degrees are just rotated, namely, the position of the second long groove 301d, in the rotating process, the rotating piece 403 rotates 90 degrees due to the limiting effect that the limiting boss 403d is embedded into the limiting hole two 301g, so that the face gear 403a rotates to drive the bolt 402 to turn 180 degrees, the inclined surface of the bolt 402 faces the second inclined surface 304b, the connecting assembly 400 can be pulled outwards, and the bolt 402 passes over the second sliding block 304 along the second inclined surface 304b to complete separation.

It is important to note that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the application, or those not associated with practicing the application).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.

It should be noted that the above embodiments are only for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present application may be modified or substituted without departing from the spirit and scope of the technical solution of the present application, which is intended to be covered in the scope of the claims of the present application.

Claims

1. Urea feed liquor device based on SCR denitration, its characterized in that: comprising the steps of (a) a step of,

a reaction cylinder (100), wherein a solution inlet (101) is arranged on the reaction cylinder (100); the solution inlet (101) is connected with a connecting pipe (102), a valve shaft hole (102 a) along the radial direction is arranged in the connecting pipe (102), and one end of the valve shaft hole (102 a) penetrates through the connecting pipe (102); a valve disc (103) is arranged in the connecting pipe (102), the valve disc (103) is provided with a valve shaft (103 a), the valve shaft (103 a) is embedded into the valve shaft hole (102 a), and one end of the valve shaft (103 a) penetrates through the valve shaft hole (102 a) to the outside of the connecting pipe (102);

a solution inlet pipe (200) connected with the connecting pipe (102) through a fixing component (300) and a connecting component (400), wherein the fixing component (300) is connected with the connecting component (400); the fixing assembly (300) comprises a fixing seat (301) connected with the connecting pipe (102), the fixing seat (301) is provided with a first through hole (301 a) penetrating through the fixing seat, the connecting assembly (400) comprises a connecting seat (401) connected with the solution inlet pipe (200), one end, close to the fixing seat (301), of the connecting seat (401) is provided with a connecting column (401 a), and the connecting seat (401) is provided with a second through hole (401 b) penetrating through the connecting column;

an adjusting pinion (104) is arranged at one end of the valve shaft (103 a) extending out of the connecting pipe (102); the outer surface of the connecting pipe (102) is provided with a limiting annular groove (102 b), the limiting annular groove (102 b) is provided with an adjusting disc (105), the adjusting disc (105) is annular, the adjusting disc (105) is provided with an end face gear ring (105 a), and the end face gear ring (105 a) is connected with an adjusting pinion (104) in a matching way; the adjusting device comprises an adjusting disc (105), wherein a driving rod (105 b) extending along the radial direction is arranged on the outer side of the adjusting disc (105), a plurality of positioning slots (105 c) uniformly distributed along the circumference are formed in the end face, away from an adjusting pinion (104), of the adjusting disc (105), a positioning block (106) is fixedly arranged on a connecting pipe (102), a positioning through hole (106 a) extending along the axial direction of the connecting pipe (102) is formed in the positioning block (106), a positioning pin (107) is arranged in the positioning through hole (106 a), one end of the positioning pin (107) is embedded into any positioning slot (105 c), and an operating ring (107 a) is arranged at the other end of the positioning pin (107); a limiting circular groove (106 b) is formed in the positioning through hole (106 a), the diameter of the limiting circular groove (106 b) is larger than that of the positioning through hole (106 a), a shaft shoulder (107 b) is arranged on the part, located in the limiting circular groove (106 b), of the positioning pin (107), and an elastic piece (108) is arranged between the shaft shoulder (107 b) and one end, far away from the positioning groove hole (105 c), of the limiting circular groove (106 b);

the fixing seat (301) is symmetrically provided with a first long groove (301 b) extending along the axial direction, the first long groove (301 b) is communicated with the first through hole (301 a), a first sliding block (302) is arranged in the first long groove (301 b), a first sliding groove (301 c) is arranged on the side face of the first long groove (301 b), a first boss (302 a) is arranged on the side face of the first sliding block (302), the first boss (302 a) is embedded into the first sliding groove (301 c), and the first sliding block (302) moves in the first sliding groove (301 c) along the radial direction of the first through hole (301 a); an edge chamfer of the first sliding block (302) close to the connecting seat (401) and close to the first through hole (301 a) forms a first slope (302 b);

the side surface of the connecting column (401 a) is provided with a rotating hole (401 c), the rotating hole (401 c) is rotationally connected with a bolt (402), and the outer end of the bolt (402) is provided with an inclined surface (402 d) to form a wedge shape; a first limiting hole (401 d) is formed in the rotating hole (401 c), the bolt (402) is provided with a limiting round table (402 b), and the limiting round table (402 b) is embedded into the first limiting hole (401 d);

a first spring (303) is arranged between the first sliding block (302) and the first long groove (301 b); the fixing seat (301) is also symmetrically provided with a second long groove (301 d) extending along the axial direction, and an arc-shaped groove (301 e) is arranged between the ends of the second long groove (301 d) and the first long groove (301 b) in the first through hole (301 a); a second sliding block (304) is arranged in the second long groove (301 d), a second boss (304 a) is arranged on the side face of the second sliding block (304), a second sliding groove (301 f) is arranged on the side face of the second long groove (301 d), the second boss (304 a) is embedded into the second sliding groove (301 f), the second sliding block (304) moves in the second long groove (301 d) along the radial direction of the first through hole (301 a), and one edge chamfer of the second sliding block (304) which is far away from the connecting seat (401) and is close to the first through hole (301 a) forms a second slope (304 b); a second spring (305) is arranged between the second sliding block (304) and the second long groove (301 d);

an annular groove (401 e) is formed in the second through hole (401 b), the annular groove (401 e) is communicated with a first limit hole (401 d), a driven gear (402 c) is connected to the limit round table (402 b), a rotating piece (403) is arranged in the annular groove (401 e), the rotating piece (403) is provided with a face gear (403 a), the face gear (403 a) is meshed with the driven gear (402 c), a rotating ring (403 c) extending out of the second through hole (401 b) is arranged on the rotating piece (403), a limit boss (403 d) is arranged at the end of the rotating ring (403 c), a second limit hole (301 g) is formed in the first through hole (301 a), and the outline of the second limit hole (301 g) is consistent with that of the limit boss (403 d);

a limiting arc groove (401 f) is further formed in the annular groove (401 e), a protrusion (403 b) is arranged on the rotating piece (403), the protrusion (403 b) is embedded into the limiting arc groove (401 f), the rotating range of the rotating piece (403) is 0-90 degrees, and the rotating range of the bolt (402) is 0-180 degrees; when the rotating piece (403) rotates by 90 degrees, the bolt (402) rotates by 180 degrees;

the end part, close to a connecting seat (401), of the fixing seat (301) is fixedly connected with a retainer ring (306), a concave hole (306 a) is formed in the retainer ring (306), a corresponding sliding hole (401 g) is formed in the end part of the connecting seat (401), a plug rod (405) is arranged in the sliding hole (401 g), a penetrating strip-shaped groove (401 h) is formed in the side face of the sliding hole (401 g), and a protruding block (405 a) is arranged on the side face of the plug rod (405) and penetrates through the strip-shaped groove (401 h);

an adjusting ring (406) is sleeved outside the connecting seat (401), an annular groove (406 a) is formed in the inner side of the adjusting ring (406), a protruding block (405 a) is embedded into the annular groove (406 a), and a fourth spring (407) is arranged between the inserting rod (405) and the bottom of the sliding hole (401 g);

a third spring (404) is arranged between the protrusion (403 b) and one end of the limiting arc groove (401 f).