Weighing and feeding device for denitration skid-mounted station
By designing a weighing and feeding device consisting of a support frame, hopper, weight sensor, and rotary disc, the problem of unstable material feeding in traditional devices was solved, achieving uniform material conveying and precise control, and improving the efficiency and production quality of the denitrification reaction.
Patent Information
- Application Number
- CN202520316427.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Traditional feeding devices lack precise weighing and flow control, resulting in unstable material input and affecting the denitrification reaction effect.
A weighing and feeding device including a support frame, hopper, weight sensor, rotary disk and motor is designed. The weight sensor measures the weight of the material, and the rotary disk and motor control the material flow to ensure uniform conveying and accurate feeding.
It achieves uniform material conveying and precise control, avoids material accumulation and agglomeration, and improves the efficiency of denitrification reaction and the stability of production quality.
Smart Images
Figure CN223804510U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of dosing device for denitration prying station, in particular to a dosing device for weighing. BACKGROUND
[0002] Industrial kiln emits a large amount of nitrogen oxides (NOx) during high-temperature combustion, which is one of the important sources of air pollution. NOx is not only the main precursor of acid rain and photochemical smog, but also causes serious harm to the ecological environment and human health. To control the environmental impact of industrial emissions, countries have successively formulated strict NOx emission limits. Especially under the promotion of the Air Pollution Prevention and Control Action Plan, many industries must meet the A-level standard of NOx emission concentration ≤50 mg / Nm³, which puts higher requirements on the efficiency and adaptability of denitration technology.
[0003] Due to the characteristics of long-time operation, high-temperature combustion and large flue gas volume, industrial kilns such as tunnel kilns have become the key control objects of NOx emission. Currently, the mainstream technologies for NOx emission reduction include selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR):
[0004] However, the traditional SNCR process mainly uses liquid reductant injection method, which has the problems of incomplete reduction reaction, low denitration efficiency, safety risks of volatilization and leakage of liquid reductant during transportation, storage and injection, and the need for more complex equipment for liquid injection system, increasing maintenance cost and operation difficulty.
[0005] To solve these problems, SNCR technology using solid reductant (such as granular urea) as reductant has gradually attracted attention.
[0006] In the denitration system using solid reductant, in order to improve the combustion efficiency and ensure that the pollutant emission meets the standard, it is often necessary to accurately control the amount of reductant. Especially when using urea as reductant, accurate feeding and uniform material delivery become crucial. Traditional feeding devices mostly use simple material delivery systems, which can meet the basic material delivery needs, but lack accurate weighing and flow control in actual operation, resulting in unstable feeding amount. With the fluctuation of feeding amount, it may lead to incomplete denitration reaction or reduced reaction efficiency, ultimately affecting the emission standard effect, and due to the nature and dust characteristics of the material, the traditional feeding device often has the problem of uneven distribution of material during operation, resulting in unstable material delivery, which further affects the effect of denitration reaction. SUMMARY
[0007] The utility model discloses a purpose at providing a kind of weighing feeder device for denitration pry station, solve the problem that traditional feeder device lacks accurate weighing and flow control in the above background technology, leading to unstable feeding amount, further influence the denitration reaction effect.
[0008] To achieve the above object, the utility model provides the following technical scheme: a kind of weighing feeder device for denitration pry station, including support frame, the support frame is provided with hopper, the hopper includes inlet hopper, retracted hopper and outlet hopper, the bottom end of the inlet hopper is fixedly connected with retracted hopper, the bottom end of the retracted hopper is fixedly connected with outlet hopper;
[0009] The weight sensor is arranged between the inlet hopper and the support frame.
[0010] The bottom of the outlet hopper is provided with a rotary disc, the bottom of the rotary disc is connected with the output end of a speed reducer, the speed reducer is connected with the output end of a motor, and an outlet is formed in the outlet hopper.
[0011] Preferably, the outer wall of the outlet hopper is provided with a circular baffle, and the outlet hopper is tangent to the circular baffle, and the tangent part of the outlet hopper and the circular baffle is connected by a mounting piece.
[0012] Preferably, the circular baffle and the outlet hopper have the same height, and the mounting piece is provided with a second outlet formed in the circular baffle.
[0013] Preferably, the inner diameter of the circular baffle is greater than the outer diameter of the outlet hopper, and the inner diameter of the circular baffle is less than the diameter of the rotary disc.
[0014] Preferably, the rotary disc, the circular baffle and the outlet hopper together form a transfer cavity for uniform discharge of the hopper.
[0015] Preferably, the distance between the bottom of the outlet hopper and the circular baffle and the rotary disc is 20-40 silk, and the center of the outlet hopper and the center of the rotary disc do not coincide in the vertical direction.
[0016] Preferably, the cross-sectional area of the top end of the retracted hopper is greater than the cross-sectional area of the bottom end, the width of the first outlet is 5-15mm, and the height is 80-120mm.
[0017] Preferably, the top of the inlet hopper is provided with a hopper cover, and the diameter of the hopper cover is greater than or equal to the diameter of the inlet hopper.
[0018] Preferably, the number of weight sensors is at least 4, and they are arranged in a circular ring around the hopper on the support frame.
[0019] Preferably, the bottom of the speed reducer is mounted on the support frame.
[0020] Compared with the prior art, the utility model has the beneficial effects that:
[0021] One, through the setting of the feeding hopper, the material can enter it, the material is gathered and guided by the gathering hopper and falls on the rotating disc, the rotating disc rotates through the reducer and motor at the bottom, since the rotating disc and the outlet hopper do not coincide in the vertical direction, the material does not fall at the center of the rotating disc, so the material on the rotating disc moves relative to the outlet hopper along with the rotation of the rotating disc, the material accumulation from the outlet hopper can be avoided, part of the material moves to the transfer cavity through the discharge port one, the material moves in the transfer cavity until it falls from the discharge port two of the circular baffle, through the above design, the rotating speed of the rotating disc can be controlled through the motor and the reducer, so that the discharge speed can be freely controlled, and the material accumulation in the hopper is avoided, so that the material conveying is more uniform.
[0022] Two, through the setting of the hopper cover, the hopper can be covered to prevent material leakage and keep the material in the hopper clean, the weight sensor can measure the weight of the material with high precision, help to adjust the feeding amount, ensure that the required amount of material is consistent each time, through real-time feedback data, the control system can accurately adjust the feeding amount, avoid excessive or insufficient feeding, improve the system operation efficiency, the data provided by the weight sensor can be combined with other system parameters to help optimize the entire production process and maintain stable production quality.
[0023] In summary, the utility model realizes uniform and controllable material conveying, the feeding hopper guides the material to the gathering hopper, and the eccentric design of the rotating disc makes the material move continuously, avoiding material accumulation or clumping in the outlet hopper, thereby ensuring uniform flow of the material, at the same time, the rotating speed of the rotating disc is controlled by the motor and the reducer, which can accurately adjust the discharge speed of the material to ensure that the required amount of material is consistent each time, the hopper cover effectively prevents material leakage and keeps the material in the hopper clean. The weight sensor measures the weight of the material with high precision, provides real-time feedback data, helps the system to accurately adjust the feeding amount, avoids excessive or insufficient feeding, thereby improving the system operation efficiency and optimizing the entire production process to ensure stable production quality. BRIEF DESCRIPTION OF DRAWINGS
[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0025] Figure 2 It is a schematic diagram of the hopper, reducer and motor structure of the utility model;
[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the transfer cavity of the utility model;
[0027] Figure 4 It is a schematic diagram of the enlarged structure of A.
[0028] Fig. label: 1, support frame; 2, hopper; 21, feeding hopper; 22, folding hopper; 23, discharge hopper; 3, weight sensor; 4, discharge port one; 5, circular baffle; 51, discharge port two; 6, mounting piece; 7, rotary disc; 8, transfer cavity; 9, speed reducer; 10, motor; 11, hopper cover. DETAILED DESCRIPTION
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0030] Please refer to Figures 1-4 The utility model provides a kind of technical solutions: a kind of weighing and feeding device for denitration pry station, including support frame 1, support frame 1 is provided with hopper 2, hopper 2 includes feeding hopper 21, folding hopper 22 and discharge hopper 23, the bottom end of feeding hopper 21 is fixedly connected with folding hopper 22, the bottom end of folding hopper 22 is fixedly connected with discharge hopper 23;
[0031] Feeding hopper 21 is provided with weight sensor 3 between support frame 1 and support frame 1.
[0032] The bottom of discharge hopper 23 is provided with rotary disc 7, and the bottom of rotary disc 7 is connected with the output end of speed reducer 9, and speed reducer 9 is connected with the output end of motor 10, and discharge hopper 23 is provided with discharge port one 4.
[0033] Further, the outer wall of discharge hopper 23 is provided with circular baffle 5, and discharge hopper 23 is tangent to circular baffle 5, and the tangent place of discharge hopper 23 and circular baffle 5 is connected by mounting piece 6.
[0034] Further, the height of circular baffle 5 and discharge hopper 23 is consistent, and one side of mounting piece 6 is provided with discharge port two 51 opened on circular baffle 5.
[0035] Further, the inner diameter of circular baffle 5 is greater than the outer diameter of discharge hopper 23, and the inner diameter of circular baffle 5 is less than the diameter of rotary disc 7.
[0036] Further, rotary disc 7, circular baffle 5 and discharge hopper 23 together form a transfer cavity 8 for uniform discharge of hopper 2.
[0037] Further, the distance between the bottom of discharge hopper 23 and circular baffle 5 and rotary disc 7 is 20-40 silk, and the center of discharge hopper 23 and the center of rotary disc 7 do not coincide in vertical direction.
[0038] Further, the top end cross-sectional area of the gathering hopper 22 is larger than the bottom end cross-sectional area, the width of the discharge port one 4 is 5-15mm, and the height is 80-120mm.
[0039] Further, the top of the feeding hopper 21 is provided with a hopper cover 11, and the diameter of the hopper cover 11 is greater than or equal to the diameter of the feeding hopper 21, so that the hopper cover 11 can cover the hopper 2 to prevent material leakage and keep the material in the hopper 2 clean.
[0040] Further, the number of weight sensors 3 is at least 4, and they are arranged in a circular ring equidistantly around the hopper 2 on the support frame 1, so that the weight sensors 3 can measure the weight of the material with high precision, help adjust the feeding amount, ensure the required amount of material for each processing, and through real-time feedback data, the control system can accurately adjust the feeding amount to avoid excessive or insufficient feeding, improve the system operation efficiency, and the data provided by the weight sensors 3 can be combined with other system parameters to help optimize the entire production process and maintain stable production quality.
[0041] Further, the bottom of the speed reducer 9 is installed on the support frame 1.
[0042] The feeding hopper 21 is used to allow material to enter it, the gathering hopper 22 gathers and guides the material to the discharge hopper 23, which falls on the rotating disc 7, which rotates through the bottom speed reducer 9 and motor 10. Since the center of the rotating disc 7 and the discharge hopper 23 does not coincide in the vertical direction, the material does not fall at the center of the rotating disc 7, so the material on the rotating disc 7 moves relative to the discharge hopper 23 as the rotating disc 7 rotates, which can avoid the accumulation of material from the discharge hopper 23, and part of the material moves to the transfer cavity 8 through the discharge port one 4, and the material moves in the transfer cavity 8 until it falls from the discharge port two 51 of the circular baffle 5. Through the above design, the rotation speed of the rotating disc 7 can be controlled by the motor 10 and the speed reducer 9, so that the discharge speed can be freely controlled, and the material entering the hopper 2 can be effectively prevented from caking, making the transported material more uniform.
[0043] Working principle: first, move the weighing and feeding device for a denitration prying station to the working position, in use, first, open the hopper cover 11, pour the material into the feeding hopper 21, second, gather the material in the gathering hopper 22, continue through the discharge hopper 23, third, the material falls on the rotating disc 7 through the discharge hopper 23, the motor 10 drives the speed reducer 9, and the speed reducer 9 drives the rotating disc 7 to rotate, fourth, the material on the rotating disc 7 enters the transfer cavity 8 from the discharge port one 4 through the rotation of the rotating disc 7, fifth, after passing through the transfer cavity 8, it falls out from the discharge port two 51, thus completing the use process of the weighing and feeding device for a denitration prying station.
[0044] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A weighing and feeding device for a de-nitrating on-site station, characterized in that, Including support frame (1), be provided with hopper (2) on support frame (1), hopper (2) includes feeding hopper (21), retraction hopper (22) and discharge hopper (23), the bottom end of feeding hopper (21) is fixedly connected with retraction hopper (22), the bottom end of retraction hopper (22) is fixedly connected with discharge hopper (23); The weight sensor (3) is arranged between the feeding hopper (21) and the support frame (1); The bottom of the discharge hopper (23) is provided with a rotating disc (7), the bottom of the rotating disc (7) is connected with the output end of a speed reducer (9), the speed reducer (9) is connected with the output end of a motor (10), and a discharge port one (4) is formed in the discharge hopper (23).
2. A weighing and feeding device for a de-nitrating on-site station according to claim 1, characterized in that, The outer wall of the discharge hopper (23) is provided with a circular baffle (5), and the discharge hopper (23) is tangent to the circular baffle (5), and the tangent part of the discharge hopper (23) and the circular baffle (5) is connected through a mounting piece (6).
3. A weighing and feeding device for a de-nitrification on-site station according to claim 2, characterized in that, The circular baffle (5) and the discharge hopper (23) are consistent in height, and one side of the mounting piece (6) is provided with a discharge port two (51) formed in the circular baffle (5).
4. A weighing and feeding device for a de-nitrating on-site station according to claim 3, characterized in that, The inner diameter of the circular baffle (5) is greater than the outer diameter of the discharge hopper (23), and the inner diameter of the circular baffle (5) is less than the diameter of the rotating disc (7).
5. A weighing and feeding device for a de-nitrification on-site station according to claim 4, characterized in that, The rotating disc (7), the circular baffle (5) and the discharge hopper (23) together form a transfer cavity (8) for uniform discharge of the hopper (2).
6. A weighing and feeding device for a de-nitrification on-site station according to claim 5, characterized in that, The distance between the bottom of the discharge hopper (23) and the circular baffle (5) and the rotating disc (7) is 20-40 silk, and the centers of the discharge hopper (23) and the rotating disc (7) do not coincide in the vertical direction.
7. A weighing and feeding device for a de-nitrification on-site station according to claim 1, characterized in that, The top end cross-sectional area of the retraction hopper (22) is greater than the bottom end cross-sectional area, the width of the discharge port one (4) is 5-15 mm, and the height is 80-120 mm.
8. A weighing and feeding device for a de-nitrification on-site station according to claim 1, characterized in that, The top of the feeding hopper (21) is provided with a hopper cover (11), and the diameter of the hopper cover (11) is greater than or equal to the diameter of the feeding hopper (21).
9. A weighing and feeding device for a de-nitrification on-site station according to claim 1, characterized in that, The number of weight sensors (3) is at least 4, and they are arranged in a circular ring equidistantly around the hopper (2) on the support frame (1).
10. A weighing and feeding device for a de-nitrification on-site station according to claim 1, characterized in that, The bottom of the speed reducer (9) is mounted on the support frame (1).