Flow guide pipe of atomization spray gun
By installing a filter plate and a heating mechanism inside the guide pipe, the problem of clogging by crystals in the urea solution was solved, achieving stable operation of the urea spray gun and environmentally friendly emissions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-03-20
AI Technical Summary
During use, the existing guide pipe is prone to forming solid urea crystals due to the presence of solid impurities in the urea solution and poor heating. This can cause the spray gun to become clogged, affecting the supply of reducing agent and, in severe cases, impacting environmental compliance with emission standards. Regular cleaning is required.
Multiple filter plates and guide plates are installed inside the guide pipe. Combined with the crystal heating mechanism and the transport pump, the crystals are filtered through the filter plates and heated in the barrel to dissolve them. Then, the transport pump transports them back to the guide pipe to prevent blockage.
It effectively prevents filter clogging, reduces crystal accumulation, avoids regular cleaning, and ensures stable operation of the urea spray gun and environmental compliance with emission standards.
Smart Images
Figure CN224010183U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of denitration, and specifically relates to a flow guide pipe of atomizing spray gun. BACKGROUND
[0002] Urea is a reducing agent for denitration, and needs to be decomposed into ammonia, and the urea solution is sprayed into a urea pyrolysis furnace through the urea spray gun along the flow guide pipe, and the urea reacts with water at high temperature in the pyrolysis furnace to generate ammonia and carbon dioxide, which is sprayed out of the urea spray gun through the filtration of the filter screen in the flow guide pipe, and the unstable pressure of the flow guide pipe affects the urea atomization effect, and a self-powered pressure regulating valve is added to the flow guide pipe to control the pressure in the flow guide pipe, thereby ensuring the urea atomization effect.
[0003] Solid impurities are usually contained in the urea solution, and poor heat tracing of the urea solution pipeline and waste of urea can also form solid urea crystalline substances, the existing flow guide pipe only has a filter screen fixedly connected at the position where the flow guide pipe is connected with the urea spray gun to filter the crystalline substances, the crystalline substances gradually increase and block the urea spray gun over time, the urea spray gun blockage can cause insufficient supply of the reducing agent, and seriously affect the environmental protection standard emission, and the crystalline substances in the flow guide pipe need to be cleaned regularly by the staff. UTILITY MODEL CONTENTS
[0004] Therefore, the utility model aims at providing a flow guide pipe of atomizing spray gun to overcome the problems in the prior art that solid impurities are usually contained in the urea solution, poor heat tracing of the urea solution pipeline and waste of urea can also form solid urea crystalline substances, the existing flow guide pipe only has a filter screen fixedly connected at the position where the flow guide pipe is connected with the urea spray gun to filter the crystalline substances, the crystalline substances gradually increase and block the urea spray gun over time, the urea spray gun blockage can cause insufficient supply of the reducing agent, and seriously affect the environmental protection standard emission, and the crystalline substances in the flow guide pipe need to be cleaned regularly by the staff.
[0005] The utility model is implemented by the following technical solutions:
[0006] A flow guide pipe of atomizing spray gun, comprising a flow guide pipe, a urea spray gun is fixedly connected in communication with the top end of the flow guide pipe, a filter screen fixedly connected with the flow guide pipe is arranged at the communication position of the urea spray gun and the flow guide pipe, a plurality of filter hole plates are fixedly connected with the inner bottom surface of the flow guide pipe and inclined along the direction close to the urea spray gun, a flow guide plate is hingedly connected with the bottom end of the facing surface of adjacent two filter hole plates, the two flow guide plates arranged between adjacent two filter hole plates are staggered, a torsion spring is fixedly connected with the connection position of the filter hole plate and the flow guide plate, a barrel is fixedly connected in communication with the bottom surface of the flow guide pipe, a crystalline substance heating mechanism is slidably arranged in the barrel, a conveying pump is fixedly connected in communication with the side end of the barrel, an output end of the conveying pump is fixedly connected in communication with a conveying pipe, and the top end of the conveying pipe is fixedly connected in communication with the flow guide pipe.
[0007] Preferably, the plurality of filtering hole plates gradually increase in height along a direction close to the urea lance, and the top surface of the filtering hole plate closest to the urea lance is fixedly connected to the inner top surface of the flow guide pipe.
[0008] Preferably, the transverse cross-sectional shape of the filtering hole plate is V-shaped, and the opening direction of the V shape is arranged along a direction close to the urea lance.
[0009] Preferably, the inclination angle of the flow guide plate close to the urea lance end among the two flow guide plates hingedly connected at the bottom end of the facing surfaces of the two adjacent filtering hole plates is smaller than the inclination angle of the flow guide plate away from the urea lance end.
[0010] Preferably, the crystalline heating mechanism comprises an electric heating hole plate slidingly arranged in the barrel, a plurality of guide rods are slidingly arranged in the electric heating hole plate, the bottom end and the top end of the guide rods are fixedly connected to the inner wall of the barrel, and the electric heating hole plate is electrically connected to an external controller.
[0011] Preferably, the bottom surface of the electric heating hole plate is fixedly connected with a vibrator, the vibrator is electrically connected to the external controller, the top surface of the electric heating hole plate is fixedly connected with a plurality of pull ropes, and the top end of the pull rope is fixedly connected to the bottom surface of the flow guide plate.
[0012] The utility model discloses a kind of urea crystallization filtering devices, which comprises barrel, flow guide pipe, filtering hole plate, flow guide plate, crystalline heating mechanism and transport pump. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.
[0014] Figure 1 It is the structure diagram of the present application.
[0015] Figure 2 It is the top view of the structure of the present application.
[0016] Figure 3 It is the local enlarged view of the structure of the present application.
[0017] In the figure: flow guide pipe 1, urea spray gun 2, filter screen 3, filter hole plate 4, barrel 5, conveying pump 6, conveying pipe 7, electric heating hole plate 8, guide rod 9, vibrator 10, flow guide plate 11, torsion spring 12, pull rope 13. DETAILED DESCRIPTION
[0018] In order to make the purpose and advantages of the utility model more clear and apparent, the utility model will be further described below in conjunction with examples; it should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model.
[0019] The preferred embodiments of the utility model will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model and not to limit the protection scope of the utility model.
[0020] It should be noted that in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the direction or positional relationship terms based on the direction or positional relationship shown in the drawings, which are only for the convenience of description and not to indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.
[0021] In addition, it should also be noted that in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0022] As shown in Figures 1-3 The utility model provides the following technical scheme: a flow guide pipe of atomizing spray gun, including flow guide pipe 1, urea spray gun 2 is fixedly connected in the top of flow guide pipe 1, urea spray gun 2 and the communication of flow guide pipe 1 is equipped with the filter screen 3 of fixed connection with flow guide pipe 1, the inner bottom surface of flow guide pipe 1 is fixedly connected with multiple filter hole plates 4 along the direction of being close to urea spray gun 2 and being inclined, the opposite face bottom of adjacent two filter hole plates 4 is hinged with flow guide plate 11, the two flow guide plates 11 set between adjacent two filter hole plates 4 are staggered between each other, the connecting place of filter hole plate 4 and flow guide plate 11 is fixedly connected with torsion spring 12, the bottom surface of flow guide pipe 1 is fixedly connected with barrel 5, the crystallization heating mechanism is slidably attached in barrel 5, conveying pump 6 is fixedly connected in the side end of barrel 5, the output end of conveying pump 6 is fixedly connected with conveying pipe 7, and the top of conveying pipe 7 is fixedly connected with flow guide pipe 1.
[0023] Please combine Figure 1 As shown in the use process, the urea solution is sprayed into the urea pyrolysis furnace through the filter screen 3 along the flow guide pipe 1, and the urea reacts with water at high temperature in the pyrolysis furnace to generate ammonia and carbon dioxide. When the urea solution flows in the flow guide pipe 1, the urea atomization effect is affected by the unstable pressure and internal temperature of the flow guide pipe. A self-operated pressure regulating valve is added to the flow guide pipe to control the pressure inside the flow guide pipe, thereby ensuring the urea atomization effect. The urea solution usually contains solid impurities, and poor urea solution pipeline heating, waste of urea and formation of solid urea crystals will also form solid urea crystals. Multiple filter hole plates 4 filter the crystals, and the filtered crystals flow into the barrel 5 along the multiple flow guide plates 11. The crystals are heated by the crystal heating mechanism to dissolve again. The dissolved urea solution is transported by the transport pump 6 along the conveying pipe 7 to the flow guide pipe 1 again, and is sprayed out along the flow guide pipe 1 along the filter screen 3 along the urea spray gun 2. Reduce the amount of crystallization in the flow guide pipe 1, effectively prevent the filter screen 3 from being blocked, and at the same time, there is no need for staff to clean the crystals in the flow guide pipe 1 at regular intervals.
[0024] Multiple filter hole plates 4 gradually increase in height along the direction close to the urea spray gun 2. The top surface of the filter hole plate 4 closest to the urea spray gun 2 is fixedly connected to the inner top surface of the flow guide pipe 1, thereby achieving filtering of crystals in solutions of different heights.
[0025] The transverse cross-sectional shape of the filter hole plate 4 is V-shaped, and the opening direction of the V-shaped is arranged along the direction close to the urea spray gun 2, so that the solution can push the crystals filtered by the filter hole plate 4 to both sides of the filter hole plate 4, reducing the accumulation of crystals in the center of the filter hole plate 4 and improving the flow rate of the solution.
[0026] The inclination angle of the flow guide plate 11 close to the urea spray gun 2 end among the two flow guide plates 11 hinged at the bottom of the opposite faces of the adjacent two filter hole plates 4 is less than the inclination angle of the flow guide plate 11 away from the urea spray gun 2 end. The crystals filtered by the filter hole plate 4 flow into the barrel 5 along the multiple flow guide plates 11. The arrangement of the multiple flow guide plates 11 achieves the blocking of the crystals in the barrel 5, reducing the re-entry of the crystals into the flow guide pipe 1.
[0027] Please combine Figure 1 As shown in the embodiment of the crystal heating mechanism, the crystal heating mechanism comprises an electric heating hole plate 8 slidably arranged in the barrel 5. A plurality of guide rods 9 are slidably arranged in the electric heating hole plate 8. The bottom end and the top end of the guide rod 9 are fixedly connected to the inner wall of the barrel 5. The electric heating hole plate 8 is electrically connected to an external controller.
[0028] Please combine Figure 1As shown, in the use process, the crystalline material falling to the top surface of the electric heating hole plate 8 is heated by the electric heating hole plate 8 to be dissolved, and the dissolved crystalline material becomes a solution and enters the inner bottom surface of the barrel 5 through the holes on the surface of the electric heating hole plate 8, and then is transported to the guide pipe 1 by the transport pump 6 through the transport pipe 7, and then is sprayed from the urea spray gun 2 along the filter screen 3.
[0029] The bottom surface of the electric heating hole plate 8 is fixedly connected with the vibrator 10, the vibrator 10 is electrically connected with the external controller, and the top surface of the electric heating hole plate 8 is fixedly connected with a plurality of pull ropes 13, the top ends of the pull ropes 13 are fixedly connected with the bottom surface of the guide plate 11.
[0030] Please combine Figure 1 As shown, in the use process, the crystalline material falling to the top surface of the electric heating hole plate 8 is heated by the electric heating hole plate 8 to be dissolved, and the dissolved crystalline material becomes a solution and enters the inner bottom surface of the barrel 5 through the holes on the surface of the electric heating hole plate 8, and then is transported to the guide pipe 1 by the transport pump 6 through the transport pipe 7, and then is sprayed from the urea spray gun 2 along the filter screen 3.
[0031] The above is only a preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A guide tube for an atomizing spray gun, comprising a guide tube, wherein a urea spray gun is fixedly connected to the top end of the guide tube, and a filter screen fixedly connected to the guide tube is provided at the connection between the urea spray gun and the guide tube, characterized in that: Multiple filter plates are fixedly connected to the inner bottom surface of the guide pipe at an angle close to the urea spray gun. A guide plate is hinged to the bottom end of the facing surfaces of two adjacent filter plates. Two guide plates are staggered between adjacent filter plates. A torsion spring is fixedly connected to the connection between the filter plate and the guide plate. A barrel is fixedly connected to the bottom surface of the guide pipe. A crystallizer heating mechanism is slidably fitted inside the barrel. A transport pump is fixedly connected to the side end of the barrel. A delivery pipe is fixedly connected to the output end of the transport pump. The top end of the delivery pipe is fixedly connected to the guide pipe.
2. The guide tube of the atomizing spray gun according to claim 1, characterized in that: Multiple filter plates gradually increase in height along the direction close to the urea spray gun, and the top surface of the filter plate closest to the urea spray gun is fixedly connected to the top surface of the guide tube.
3. The guide tube of the atomizing spray gun according to claim 2, characterized in that: The filter plate has a V-shaped cross-section, and the opening of the V-shape is set along the direction close to the urea spray gun.
4. The guide tube of the atomizing spray gun according to claim 2 or 3, characterized in that: In the two guide plates hinged at the bottom of the facing surfaces of two adjacent filter plates, the guide plate closer to the urea spray gun end has a smaller tilt angle than the guide plate farther from the urea spray gun end.
5. The guide tube of the atomizing spray gun according to any one of claims 1-3, characterized in that: The crystallization heating mechanism includes an electric heating perforated plate that is slidably disposed inside the barrel. Multiple guide rods are slidably disposed inside the electric heating perforated plate. The bottom and top ends of the guide rods are fixedly connected to the inner wall of the barrel. The electric heating perforated plate is electrically connected to an external controller.
6. The guide tube of the atomizing spray gun according to claim 5, characterized in that: A vibrator is fixedly connected to the bottom surface of the electric heating orifice plate, and the vibrator is electrically connected to an external controller. Multiple pull ropes are fixedly connected to the top surface of the electric heating orifice plate, and the top ends of the pull ropes are fixedly connected to the bottom surface of the guide plate.