Feeding mechanism of PNCR denitration system

Abstract

The utility model relates to a feeding mechanism of a PNCR denitration system, which belongs to the technical field of feeding mechanisms and comprises a frame, a feeding mechanism mounted on the outer side of the frame and used for feeding, and a feeding component mounted on the right side of the frame and used for feeding powdery polymer denitration agents. The feeding mechanism comprises a conveying assembly and a filtering assembly; the conveying assembly is mounted at the top of the rack and is used for conveying the powdery polymer denitration agent; the filtering assembly is mounted on the left side of the conveying assembly and is used for preventing the powdery polymer denitration agent from being discharged out of the feeding mechanism along with air. According to the feeding mechanism of the PNCR denitration system, it can be ensured that a powdery polymer denitration agent is in a vacuum state in the conveying process, gas exhausted out of the feeding mechanism can be effectively filtered, the powdery polymer denitration agent is further prevented from being raised in air, wind generated at the discharging position can be spiral wind, and the discharging effect is good. Therefore, the powdery polymer denitration agent is driven to do spiral motion, and the practicability of the feeding mechanism of the PNCR denitration system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of feeding mechanisms, in particular to a feeding mechanism of a PNCR denitration system. Background Art

[0002] The flue gas generated by industrial boilers and power plant boilers during use generally contains a large amount of nitrogen oxides. Currently, flue gas denitrification technology is an important means to control nitrogen oxide emissions. Among them, PNCR (polymer denitrification technology) as a highly efficient denitrification method is gradually gaining widespread attention and application. PNCR technology sprays polymer denitrification agents into the flue gas, which react with nitrogen oxides and convert them into harmless substances. When using the PNCR denitrification method, a feeding mechanism is generally required to load the powdered polymer denitrification agent.

[0003] The existing flue gas denitrification feeding mechanism generally transports the powdered polymer denitrification agent to be used in a conventional environment. During actual use, the powdered polymer denitrification agent may be blown into the air, resulting in a waste of resources and an impact on the health of the workers. In addition, directly spraying the powdered polymer denitrification agent into the flue gas may result in a limited contact area between the powdered polymer denitrification agent and the nitrogen oxides in the flue gas, which may lead to a slower reaction efficiency and reduce the practicality of the existing flue gas denitrification feeding mechanism. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the present application provides a feeding mechanism for a PNCR denitrification system, which has the advantages of effectively preventing powdered polymer denitrification agents from being raised in the air and improving reaction efficiency, thereby solving the problem of low practicality of existing feeding mechanisms for flue gas denitrification.

[0005] To achieve the above-mentioned purpose of effectively preventing the powdered polymer denitrification agent from being raised in the air and improving the reaction efficiency, the present application provides the following technical solution: a feeding mechanism of a PNCR denitrification system, comprising a frame, a feeding mechanism installed on the outside of the frame for feeding, and a feeding assembly installed on the right side of the frame for feeding the powdered polymer denitrification agent;

[0006] The feeding mechanism includes a conveying assembly installed on the top of the frame for conveying the powdered polymer denitrification agent, and a filtering assembly installed on the left side of the conveying assembly for preventing the powdered polymer denitrification agent from being discharged from the feeding mechanism along with the air;

[0007] The conveying assembly includes a first feed hopper fixed inside the frame, a connecting pipe fixed to the top of the first feed hopper, a second feed hopper fixed to the top of the connecting pipe, a conveying hose fixed to the right side of the second feed hopper, a valve fixed to the bottom of the first feed hopper, a lower hopper fixed to the bottom of the valve, a support frame fixed to the outside of the lower hopper, a tee fixed to the bottom of the lower hopper, two fixing rods fixed inside the tee, a fixing plate fixed between opposite sides of the two fixing rods, and a spiral fan blade rotatably connected to the right side of the fixing plate through a bearing.

[0008] By adopting the above technical solution, it is possible to effectively prevent the powdered polymer denitrification agent from being blown into the air and improve the reaction efficiency.

[0009] Furthermore, the filter assembly includes an outlet pipe fixed to the left side of the connecting pipe, a conical cylinder threadedly connected to the outside of the outlet pipe, a sleeve cylinder slidably connected to the outside of the outlet pipe, a filter element fixed to the end of the sleeve cylinder away from the connecting pipe, two moving rods slidably connected to the inside of the sleeve cylinder, trapezoidal blocks respectively fixed to the opposite ends of the two moving rods, springs respectively fixed to the opposite sides of the two trapezoidal blocks, and fixing grooves respectively opened at the bottom of the top of the sleeve cylinder.

[0010] By adopting the above technical solution, it is avoided that the powdered polymer denitrification agent is discharged from the feeding mechanism during the process of extracting the gas in the feeding mechanism.

[0011] Furthermore, the feeding assembly includes a base fixed to the right side of the frame, a vacuum pump fixed to the top of the base, a feeding pipe fixed to the feeding port of the vacuum pump, and a discharging pipe fixed to the discharging port of the vacuum pump.

[0012] By adopting the above technical solution, powdered polymer denitrification agent can be effectively transported.

[0013] Furthermore, one end of the discharge pipe away from the vacuum pump is fixed to the conveying hose.

[0014] By adopting the above technical solution, it is ensured that the powdered polymer denitrification agent can be effectively transported through the discharge pipe and the conveying hose.

[0015] Furthermore, the bottom of the support frame and the bottom of the frame are located on the same horizontal plane.

[0016] By adopting the above technical solution, it is ensured that the support frame can effectively support and fix the lower hopper.

[0017] Furthermore, the opposite ends of the two moving rods successively pass through the sleeve, the air outlet pipe and the fixing groove and extend into the fixing groove to be plugged into the fixing groove.

[0018] By adopting the above technical solution, it is ensured that the fixing rod can be effectively inserted into the fixing groove, thereby effectively fixing the sleeve and the filter element.

[0019] Furthermore, the outer diameter of the air outlet pipe is equal to the inner diameter of the sleeve, and the spring is located outside the moving rod.

[0020] By adopting the above technical solution, the sliding of the sleeve and the air outlet pipe is made more stable.

[0021] Furthermore, the adjustable distance of the conical cylinder outside the air outlet pipe is greater than the adjustable distance of the trapezoidal block in the conical cylinder.

[0022] By adopting the above technical solution, it is ensured that the conical cylinder can effectively extrude the trapezoidal blocks.

[0023] Compared with the existing technology, this invention provides a new feeding mechanism for PNCR denitration system, which has the following beneficial effects:

[0024] The feeding mechanism of the PNCR denitrification system, through the coordinated use of the frame, the first feeding hopper, the lower hopper, the tee pipe, the conical cylinder and the filter element in the feeding mechanism, can ensure that the process of conveying the powdered polymer denitrification agent is in a vacuum state during actual use, thereby effectively avoiding the powdered polymer denitrification agent from being raised in the air during the conveying process, and can also effectively filter the gas discharged from the feeding mechanism, thereby further avoiding the powdered polymer denitrification agent from being raised in the air, thereby avoiding waste of resources and ensuring that there will be no impact on the health of the staff, and can also make the wind generated at the discharge point a spiral wind, thereby carrying the powdered polymer denitrification agent to do spiral motion, thereby increasing the contact reaction efficiency of the powdered polymer denitrification agent with nitrogen oxides in the flue gas, and improving the practicality of the feeding mechanism of the PNCR denitrification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of this application;

[0026] Figure 2 This is a top cross-sectional view of the filter element connection structure in the structure of this application;

[0027] Figure 3 It is a three-dimensional schematic diagram of the air outlet pipe connection structure in the structure of the utility model;

[0028] Figure 4 This is a right side cross-sectional view of the three-way pipe in the structure of this utility model.

[0029] In the figure: 1. Frame; 200. Loading mechanism; 201. Conveying assembly; 2011. First feed hopper; 2012. Connecting pipe; 2013. Second feed hopper; 2014. Conveying hose; 2015. Valve; 2016. Lower hopper; 2017. Support frame; 2018. Tee; 2019. Fixed rod; 202. Filter assembly; 2021. Exhaust pipe; 2022. Conical cylinder; 2023. Socket cylinder; 2024. Moving rod; 2025. Trapezoidal block; 2026. Spring; 2027. Fixed groove; 2028. Filter element; 300. Feed assembly; 301. Base; 302. Vacuum pump; 303. Feed pipe; 304. Discharge pipe. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] See also Figures 1 to 4 The utility model provides a technical solution: a feeding mechanism of a PNCR denitrification system, comprising a frame 1, a feeding mechanism 200 installed on the outside of the frame 1 for feeding, and a feeding assembly 300 installed on the right side of the frame 1 for feeding powdered polymer denitrification agent;

[0032] Through the coordinated use of the frame 1 and the feeding mechanism 200, in actual use, it can be ensured that the process of conveying the powdered polymer denitrification agent is in a vacuum state, thereby effectively avoiding the powdered polymer denitrification agent from being lifted into the air during the conveying process, and can also effectively filter the gas discharged from the feeding mechanism, thereby further avoiding the powdered polymer denitrification agent from being lifted into the air, thereby avoiding waste of resources and ensuring that there will be no impact on the health of the staff, and the wind generated at the discharge point can be spiral wind, thereby carrying the powdered polymer denitrification agent to do spiral motion, thereby increasing the contact reaction efficiency of the powdered polymer denitrification agent with nitrogen oxides in the flue gas, and improving the practicality of the feeding mechanism of the PNCR denitrification system.

[0033] In this embodiment, the loading mechanism 200 is a structure for loading materials.

[0034] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the feeding mechanism 200 includes a conveying component 201 installed on the top of the frame 1 for conveying the powdered polymer denitrification agent, and a filtering component 202 installed on the left side of the conveying component 201 for preventing the powdered polymer denitrification agent from being discharged from the feeding mechanism along with the air.

[0035] In this embodiment, the conveying component 201 is a structure for conveying powdered polymer denitrification agent.

[0036] like Figure 1 and Figure 4 As shown, the conveying assembly 201 includes a first feed hopper 2011 fixed to the inside of the frame 1, a connecting pipe 2012 fixed to the top of the first feed hopper 2011, a second feed hopper 2013 fixed to the top of the connecting pipe 2012, a conveying hose 2014 fixed to the right side of the second feed hopper 2013, a valve 2015 fixed to the bottom of the first feed hopper 2011, a lower hopper 2016 fixed to the bottom of the valve 2015, a support frame 2017 fixed to the outside of the lower hopper 2016, a T-piece 2018 fixed to the bottom of the lower hopper 2016, two fixed rods 2019 fixed to the inside of the T-piece 2018, a fixed plate 20110 fixed between opposite sides of the two fixed rods 2019, and a spiral fan blade 20111 rotatably connected to the right side of the fixed plate 20110 through a bearing.

[0037] It should be noted that the bottom of the support frame 2017 and the bottom of the frame 1 are located at the same horizontal plane, ensuring that the support frame 2017 can effectively support and fix the lower hopper 2016.

[0038] In this embodiment, the filter assembly 202 is a structure used to prevent the powdered polymer denitrification agent from being discharged from the feeding mechanism along with the air.

[0039] like Figure 1 、 Figure 2 and Figure 3 As shown, the filter assembly 202 includes an air outlet pipe 2021 fixed to the left side of the connecting pipe 2012, a conical cylinder 2022 threadedly connected to the outside of the air outlet pipe 2021, a sleeve cylinder 2023 slidably connected to the outside of the air outlet pipe 2021, a filter element 2028 fixed to the end of the sleeve cylinder 2023 away from the connecting pipe 2012, two moving rods 2024 slidably connected to the inside of the sleeve cylinder 2023, trapezoidal blocks 2025 respectively fixed to the opposite ends of the two moving rods 2024, springs 2026 respectively fixed to the opposite sides of the two trapezoidal blocks 2025, and fixing grooves 2027 respectively opened at the top and bottom of the sleeve cylinder 2023.

[0040] It should be noted that the opposite ends of the two movable rods 2024 pass through the sleeve 2023, the air outlet pipe 2021 and the fixed groove 2027 in sequence and extend into the fixed groove 2027 to be plugged into the fixed groove 2027, ensuring that the movable rod 2024 can be effectively plugged into the fixed groove 2027, thereby effectively fixing the sleeve 2023 and the filter element 2028.

[0041] In addition, the outer diameter of the air outlet pipe 2021 is equal to the inner diameter of the sleeve 2023, so that the sleeve 2023 and the air outlet pipe 2021 can slide more stably. The spring 2026 is located on the outside of the moving rod 2024, ensuring that the spring 2026 can achieve the expected use effect under the action of the moving rod 2024.

[0042] In addition, the adjustable distance of the conical cylinder 2022 outside the air outlet pipe 2021 is greater than the adjustable distance of the trapezoidal block 2025 in the conical cylinder 2022 , ensuring that the conical cylinder 2022 can effectively squeeze the trapezoidal block 2025 .

[0043] In this embodiment, the feeding assembly 300 is a structure for feeding powdered polymer denitrification agent.

[0044] like Figure 1 As shown, the feeding assembly 300 includes a base 301 fixed to the right side of the frame 1, a vacuum pump 302 fixed to the top of the base 301, a feeding pipe 303 fixed to the feeding port of the vacuum pump 302, and a discharging pipe 304 fixed to the discharging port of the vacuum pump 302.

[0045] It should be noted that the end of the discharge pipe 304 away from the vacuum pump 302 is fixed to the delivery hose 2014 to ensure that the powdered polymer denitrification agent can be effectively transported through the discharge pipe 304 and the delivery hose 2014.

[0046] The working principle of the above embodiment is:

[0047] During use, the powdered polymer denitrification agent to be used is added into the second feed hopper 2013 and the first feed hopper 2011 through the vacuum pump 302, the feed pipe 303, the discharge pipe 304 and the conveying hose 2014. The interiors of the first feed hopper 2011 and the second feed hopper 2013 are both in a vacuum state. Then the valve is opened to allow the powdered polymer denitrification agent to enter the lower hopper 2016 and the tee pipe 2018. The left side of the tee pipe 2018 is fixed to the fan, and the right side of the tee pipe 2018 is connected to the boiler device or other devices, so that the powdered polymer denitrification agent can be conveyed into the flue gas through the tee pipe 2018. At the same time, under the action of the spiral fan blades 20111, the wind generated at the discharge point can be spiral wind, thereby carrying the powdered polymer denitrification agent. The agent makes a spiral motion, thereby increasing the contact reaction efficiency between the powdered polymer denitrification agent and the nitrogen oxides in the flue gas, and then when it is necessary to extract the air inside the feed hopper, the gas can be filtered through the filter element 2028, thereby preventing the powdered polymer denitrification agent from being raised in the air. When it is necessary to replace the filter element 2028, the conical cylinder 2022 is rotated so that the conical cylinder 2022 loses the limit on the trapezoidal block 2025, and under the action of the restoring elastic force of the spring 2026, the moving rod 2024 is driven to separate from the fixed groove 2027, so that the filter element 2028 and the sleeve cylinder 2023 can be removed from the outlet pipe 2021 for replacement. After the replacement is completed, the upper and lower operations are reversed to achieve the installation of the filter element 2028.

[0048] Compared with the prior art, the feeding mechanism of the PNCR denitrification system, through the coordinated use of the frame 1, the first feeding hopper 2011 in the feeding mechanism 200, the lower hopper 2016, the tee pipe 2018, the conical cylinder 2022 and the filter element 2028, can ensure that the powdered polymer denitrification agent is transported in a vacuum state during actual use, thereby effectively avoiding the powdered polymer denitrification agent from being raised in the air during the transportation process, and can also effectively filter the gas discharged from the feeding mechanism, thereby further avoiding the powdered polymer denitrification agent from being raised in the air, thereby avoiding waste of resources and ensuring that there is no impact on the health of the staff, and can also make the wind generated at the discharge point spiral wind, thereby carrying the powdered polymer denitrification agent to perform spiral motion, thereby increasing the contact reaction efficiency between the powdered polymer denitrification agent and the nitrogen oxides in the flue gas, improving the practicality of the feeding mechanism of the PNCR denitrification system, and solving the problem of low practicality of the existing feeding mechanism for flue gas denitrification.

[0049] The electrical components appearing in the text are all electrically connected to the controller and the power supply. The control method of the present invention is controlled by the controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of an external power supply is also common knowledge in this field. Moreover, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

Claims

1. A feeding mechanism for a PNCR denitration system, characterized by: It comprises a frame (1), a loading mechanism (200) installed on the outside of the frame (1) for loading materials, and a feeding assembly (300) installed on the right side of the frame (1) for loading powdered polymer denitrification agent; The feeding mechanism (200) comprises a conveying assembly (201) mounted on the top of the frame (1) for conveying the powdered polymer denitrification agent, and a filtering assembly (202) mounted on the left side of the conveying assembly (201) for preventing the powdered polymer denitrification agent from being discharged from the feeding mechanism along with the air. The conveying assembly (201) comprises a first feed hopper (2011) fixed inside the frame (1), a connecting pipe (2012) fixed at the top of the first feed hopper (2011), a second feed hopper (2013) fixed at the top of the connecting pipe (2012), a conveying hose (2014) fixed at the right side of the second feed hopper (2013), a valve (2015) fixed at the bottom of the first feed hopper (2011), and a valve (2015) fixed at the bottom of the valve (2015). The invention relates to a lower hopper (2016) at the bottom, a support frame (2017) fixed to the outside of the lower hopper (2016), a three-way pipe (2018) fixed to the bottom of the lower hopper (2016), two fixing rods (2019) fixed inside the three-way pipe (2018), a fixing plate (20110) fixed between opposite sides of the two fixing rods (2019), and a spiral fan blade (20111) rotatably connected to the right side of the fixing plate (20110) via a bearing.

2. The feeding mechanism of the PNCR denitration system according to claim 1, characterized in that: The filter assembly (202) comprises an air outlet pipe (2021) fixed to the left side of the connecting pipe (2012), a conical cylinder (2022) threadedly connected to the outside of the air outlet pipe (2021), a sleeve cylinder (2023) slidably connected to the outside of the air outlet pipe (2021), a filter core (2028) fixed to the end of the sleeve cylinder (2023) away from the connecting pipe (2012), two moving rods (2024) slidably connected to the inside of the sleeve cylinder (2023), trapezoidal blocks (2025) respectively fixed to the opposite ends of the two moving rods (2024), springs (2026) respectively fixed to the opposite sides of the two trapezoidal blocks (2025), and fixing grooves (2027) respectively opened at the top and bottom of the sleeve cylinder (2023).

3. The feeding mechanism of the PNCR denitration system according to claim 1, characterized in that: The feeding assembly (300) comprises a base (301) fixed to the right side of the frame (1), a vacuum pump (302) fixed to the top of the base (301), a feeding pipe (303) fixed to the feeding port of the vacuum pump (302), and a discharging pipe (304) fixed to the discharging port of the vacuum pump (302).

4. The feeding mechanism of the PNCR denitration system according to claim 3, characterized in that: One end of the discharge pipe (304) away from the vacuum pump (302) is fixed to the conveying hose (2014).

5. The feeding mechanism of the PNCR denitration system according to claim 1, characterized in that: The bottom of the support frame (2017) and the bottom of the frame (1) are located on the same horizontal plane.

6. The feeding mechanism of the PNCR denitration system according to claim 2, characterized in that: The opposite ends of the two moving rods (2024) successively penetrate the sleeve (2023), the air outlet pipe (2021) and the fixing groove (2027) and extend into the fixing groove (2027) to be plugged into the fixing groove (2027).

7. The feeding mechanism of the PNCR denitration system according to claim 2, characterized in that: The outer diameter of the air outlet pipe (2021) is equal to the inner diameter of the sleeve (2023), and the spring (2026) is located outside the moving rod (2024).

8. The feeding mechanism of the PNCR denitration system according to claim 2, characterized in that: The adjustable distance of the conical cylinder (2022) outside the air outlet pipe (2021) is greater than the adjustable distance of the trapezoidal block (2025) inside the conical cylinder (2022).

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