Feeding valve automation device

Abstract

The utility model relates to a feeding valve automation device which comprises a feeding device frame, a feeding device valve plate, an adjusting connecting piece, a pneumatic actuator, an electromagnetic valve and a piston rod. A pressure regulating valve and a filter are arranged in front of the pneumatic electromagnetic valve. According to the device, an original manual valve is changed into a pneumatic valve by additionally arranging an air cylinder, an electromagnetic valve control signal is linked with a discharging valve motor operation signal, and when a small stock bin is located at a high material level, the discharging valve motor stops operating, and a feeding device valve plate is closed; on the contrary, when the small stock bin is located at the low material level, the discharging valve motor starts to operate, and the feeding device valve plate is opened. The device is good in operation effect, effectively solves the material leakage phenomenon, saves the material cost, improves the operation condition of the mill, reduces the equipment accident rate, reduces the workload of workers, realizes automation and intelligence, and has wide application prospects in modern enterprises.

Description

TECHNICAL FIELD

[0001] The patent application belongs to the technical field of ash valve device, more particularly, it relates to a feeding valve automation device. BACKGROUND

[0002] The SDS dry desulfurization technology has the advantages of high desulfurization efficiency, flexible adjustment, strong adaptability, simple system, convenient maintenance, low one-time investment, low operation cost, no waste water produced in the whole dry system, and small amount of by-product, etc., and is widely used in the field of flue gas desulfurization.

[0003] The desulfurizer grinder is one of the core equipment of the SDS dry desulfurization system, and the grinder comprises a raw material bin, a manual gate valve, a star-shaped discharge valve, a small hopper, a mixer, a screw quantitative feeder, a grinder, a grading wheel, a conveying fan and an outlet pipeline nozzle. In normal operation, baking soda in the upper raw material bin is controlled to enter the small hopper through the star-shaped discharge valve by an automatic control program, and then the baking soda is adjusted in the amount of addition to enter the grinder through the screw quantitative feeder, and the powder after grinding enters the conveying fan through the grading wheel, and the fine baking soda powder is pressurized through the pipeline nozzle to enter the desulfurization tower and react with the acidic substances in the flue gas. When the system is automatically operated, the intermittent feeding of the small hopper is automatically completed by the program control of the upper computer, and the baking soda feeding amount is adjusted according to the flue gas parameters at the inlet of the boiler to control the sulfur dioxide at the outlet of the boiler.

[0004] In the actual operation process, it is found that the star-shaped discharge valve of the raw material bin has a leakage phenomenon, and when the grinding amount is less than the leakage amount of the star-shaped discharge valve, the small hopper is in a high material level for a long time, and no low material level signal is received after the system runs for 360s, and an alarm "grinder discharge fault" is given, and the grinder is automatically protected and stopped. In order to reduce the number of equipment fault stop, the post staff can only frequently adjust the opening of the manual gate valve, which is very labor-intensive, and in addition, the feeding amount is forcibly increased to be greater than the leakage amount of the discharge valve for adjustment, which not only causes waste of baking soda raw materials, but also increases the workload of ash removal and the cost of solid waste treatment.

[0005] The star-shaped discharge valve is composed of a motor, a speed reducer and a rotating cage type discharger. The material in the upper bin falls by gravity and fills in the gap between the rotating cage blades, and the material is discharged at the lower part with the rotation of the blades during discharging. However, in actual operation, because the baking soda powder is fine, the baking soda continuously leaks through the gap between the discharger blades and the valve body, which cannot be completely isolated, and thus the small hopper of the grinder is frequently full. The effect is not good by machining adjustment of the gap between the rotating cage blades and the valve body and increasing the number of rotating cage blades, and the small grinder is difficult to operate normally. CONTENT OF THE INVENTION

[0006] The utility model discloses a reliable cut-off unloading device for powder material of closed type, realizes reliable cut-off of the feeding device, completely solves the leakage problem of star type unloading valve and guarantees the normal operation of equipment.

[0007] In order to solve the above problems, the utility model adopts the technical scheme of:

[0008] A kind of feeding valve automation device, including electromagnetic valve connected with unloading valve motor start-stop signal, pneumatic actuator connected with electromagnetic valve, piston rod connected with pneumatic actuator, adjusting connecting piece connected with the end of piston rod, corresponding connecting of adjusting connecting piece with the valve plate of feeding device, the feeding device frame of feeding device valve plate installation, feeding device valve plate is slidably installed in feeding device frame;

[0009] Feeding device frame is located at the outer periphery of downcomer, and is installed in the middle upper portion of downcomer, and the valve plate of feeding device can pass through downcomer, the upper end of downcomer is connected with large bin, and the lower end is connected with small bin, and the bottom of downcomer is further connected with electric star feeder, and the electric star feeder is located above small bin.

[0010] Further, adjusting connecting piece is connected on the center line of feeding device valve plate, and it is columnar or rod-shaped.

[0011] Further, adjusting connecting piece and piston rod are both 20# steel rods, and the outer diameter of adjusting connecting piece is thicker than that of piston rod, and the specification of adjusting connecting piece is Φ25*150mm.

[0012] Further, chute is arranged in feeding device frame, and feeding device valve plate slides in the chute.

[0013] Further, large bin is funnel-shaped, and small bin is cubic.

[0014] Further, the material of large bin and small bin is powder material, and the powder material is powder-like baking soda.

[0015] Further, pneumatic actuator is SC100*125S, and electromagnetic valve is 4V310-10.

[0016] Further, pressure regulating valve and filter are further installed in front of electromagnetic valve.

[0017] Due to the adoption of the above technical scheme, the utility model has the beneficial effects of:

[0018] This invention modifies the manual slide gate valve used for isolation before the rotary valve into a pneumatic slide gate valve. A two-position five-way pneumatic solenoid valve is configured and connected to the cylinder. Power is supplied from the operation indicator light on the local control box of the rotary valve. The solenoid valve and the operation indicator light are connected in parallel to achieve electrical interlocking between the pneumatic valve switch and the start / stop of the rotary valve. This ensures that when the small hopper has a low material level, the rotary valve operates while the slide gate valve automatically opens; when the small hopper has a high material level, the rotary valve stops while the slide gate valve automatically closes, achieving zero material leakage. Actual use has shown good results, and the mill operates normally, ensuring the normal operation of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is the installation layout diagram of this utility model.

[0021] The list of labels in the diagram is as follows: 1. Feeding device frame, 2. Feeding device valve plate, 3. Adjustment connector, 4. Pneumatic actuator, 5. Solenoid valve, 6. Piston rod, 7. Large hopper, 8. Discharge pipe, 9. This device, 10. Electric rotary feeder, 11. Small hopper. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the embodiments.

[0023] An automated feeding valve device, such as Figure 1 , Figure 2 It includes a solenoid valve 5 connected to the start / stop signal of the unloading valve motor, a pneumatic actuator 4 connected to the solenoid valve 5, a piston rod 6 connected to the pneumatic actuator 4, an adjusting connector 3 connected to the end of the piston rod 6, a feeding device valve plate 2 connected to the adjusting connector 3, and a feeding device frame 1 on which the feeding device valve plate 2 is installed. The feeding device valve plate 2 is slidably installed in the feeding device frame 1.

[0024] The feeding device frame 1 is located on the outer periphery of the feeding pipe 8 and installed in the upper middle part of the feeding pipe 8. The feeding device valve plate 2 can pass through the feeding pipe 8. The upper end of the feeding pipe 8 is connected to the large hopper 7 and the lower end is connected to the small hopper 11. The bottom of the feeding pipe 8 is also connected to an electric star feeder 10, which is located above the small hopper 11.

[0025] The adjusting connector 3 is connected to the center line of the valve plate 2 of the feeding device, and it is columnar or rod-shaped. The end of the adjusting connector 3 near the valve plate 2 of the feeding device has an M18*20mm external thread, and the end near the piston rod 6 has an M18*20mm internal hole for positioning. It is connected to the valve plate 2 of the feeding device with an internal hole of M16*10mm and a 25mm through hole in the middle.

[0026] In the selection of materials, the connecting piece 3 and the piston rod 6 are both 20# steel rods, Figure 1 It can be seen that the outer diameter of the adjusting connecting piece 3 is thicker than that of the piston rod 6, and the specification of the adjusting connecting piece 3 can be Φ25*150mm.

[0027] The feeding device frame 1 is provided with a sliding groove, and the feeding device valve plate 2 slides in the sliding groove. The feeding device frame 1 can be sleeved on the outer periphery of the discharging pipe 8, and the sliding of the feeding device valve plate 2 can control the discharging amount of the discharging pipe 8.

[0028] In Figure 2 , the large material bin 7 is funnel-shaped, and the small material bin 11 is cubic, and of course can also be other shapes of material bins.

[0029] The materials in the large material bin 7 and the small material bin 11 are powdery materials, which can be powder-like baking soda, or can be selected according to specific conditions.

[0030] The pneumatic actuator 4 is of the type SC100*125S, and the electromagnetic valve 5 is of the type 4V310-10. A pressure regulating valve and a filter are also installed in front of the electromagnetic valve 5, which facilitates the advance treatment and purification of compressed air required. Embodiment

[0031] The device reforms the No. 1 discharging valve manual gate valve (that is, the feeding device valve plate 2), which is originally a manual valve, into a pneumatic valve by adding a cylinder / pneumatic actuator 4, and the control signal of the electromagnetic valve 5 is linked with the running signal of the discharging valve motor, the raw materials pass through the discharging pipe 8 from the large material bin 7, are controlled to be discharged by the device 9, and then are sent to the small material bin 11 through the 10 electric star-shaped feeder. That is, when the small material bin 11 is at a high material level, the discharging valve motor stops running, and the reformed feeding device valve plate 2 is closed; on the contrary, when the small material bin 11 is at a low material level, the discharging valve motor starts running, and the reformed feeding device valve plate 2 is opened, so that the materials flow down, and the material supply is guaranteed. After observation for about ten days, the running effect is good, the material leakage phenomenon is solved, the material cost is saved, and the mill running condition is improved. The device effectively reduces the equipment accident rate, realizes automation, reduces the work load of workers, realizes automation and intelligentization, and has a broad application prospect in modern enterprises

[0032] The utility model selects the middle of the No. 1 mill bin and the small material bin 11, inputs the start-stop signal of the discharging valve motor, the signal is simultaneously given to the electromagnetic valve 5 (type 4V310-10), the electromagnetic valve 5 acts to admit air; the pneumatic actuator 4 (SC100*125S) works, and pushes the piston rod 6 to act; then the piston rod 6 drives the adjusting connecting piece 3 (specification Φ25*150mm), so that the feeding device valve plate 2 works, executes opening and closing, and controls the discharging amount of the discharging pipe 8.

[0033] The functions of various components in the drawings are as follows:

[0034] Pneumatic actuator 4 (i.e. pneumatic cylinder), model SC100*125S, acting as an actuator for driving the gate valve.

[0035] Adjusting connector 3, Φ25*150mm in size, made of 20# steel rod, which serves to drive the pneumatic actuator 4 / cylinder to adjust the opening and closing of the valve plate 2 of the feeding device.

[0036] Piston rod 6: made of 20# steel rod, which serves to position the adjusting connector 3 and the driving rod of the pneumatic actuator 4 / cylinder to be concentric and to drive the valve plate 2 of the feeding device.

[0037] Electromagnetic valve 5: pneumatic electromagnetic valve, model 4V310-10, which serves to send the start / stop signal of the valve motor to the pneumatic electromagnetic valve to drive the nitrogen in and out and to send the working nitrogen to the pneumatic actuator 4 / cylinder.

[0038] Working principle: the utility model transforms the manual gate valve before the star-shaped discharge valve into a pneumatic gate valve. The electromagnetic valve 5 can be a two-position five-way pneumatic electromagnetic valve, which is connected with the cylinder / pneumatic actuator 4, and the power supply is connected with the operation indicator of the star-shaped discharge valve, the electromagnetic valve 5 is connected with the operation indicator in parallel, the opening and closing of the electromagnetic valve 5 is electrically interlocked with the start / stop of the star-shaped discharge valve, the star-shaped discharge valve is operated when the small bin 11 is low in material level, and the valve plate 2 of the feeding device is automatically opened, the star-shaped discharge valve is stopped when the small bin 11 is high in material level, and the valve plate 2 of the feeding device is automatically closed, zero material leakage is realized, the actual use effect is good, and the mill operates normally. The normal operation of the equipment is ensured, and the labor intensity is reduced. The star-shaped discharge valve is not drawn, which is related to the electric star-shaped feeder 10; the electric star-shaped feeder 10 is composed of a motor and a star-shaped discharge valve, which is not the innovation point of the patent, and will not be described in detail.

[0039] The utility model has the advantages of simple structure, reduced equipment accident rate, realized automation, reduced work load of workers, realized automation and intelligentization, wide application prospect in modern enterprises, etc.

Claims

1. A feed valve automation apparatus, characterized by: The electromagnetic valve (5) is connected with the motor start-stop signal of the discharge valve, the pneumatic actuator (4) is connected with the electromagnetic valve (5), the piston rod (6) is connected with the pneumatic actuator (4), the adjusting connecting piece (3) is connected with the end of the piston rod (6), the feeder device valve plate (2) is connected with the adjusting connecting piece (3), the feeder device frame (1) is installed on the feeder device valve plate (2), and the feeder device valve plate (2) is slidingly installed in the feeder device frame (1); The feeder device frame (1) is located outside the discharge pipe (8) and is installed on the middle and upper part of the discharge pipe (8), the feeder device valve plate (2) can pass through the discharge pipe (8), the upper end of the discharge pipe (8) is connected with the large material bin (7), the lower end is connected with the small material bin (11), and the bottom of the discharge pipe (8) is further connected with the electric star feeder (10), and the electric star feeder (10) is located above the small material bin (11).

2. A feeder valve automation device according to claim 1, characterized in that: The adjusting connecting piece (3) is connected on the center line of the feeder device valve plate (2) and is columnar or rod-shaped.

3. A feeder valve automation device according to claim 2, wherein: The adjusting connecting piece (3) and the piston rod (6) are both 20# steel rods, the outer diameter of the adjusting connecting piece (3) is thicker than that of the piston rod (6), and the specification of the adjusting connecting piece (3) is Φ25*150mm.

4. The feeder valve automation apparatus of claim 1, wherein: The feeder device frame (1) is provided with a sliding groove, and the feeder device valve plate (2) slides in the sliding groove.

5. The feeder valve automation apparatus of claim 1, wherein: The large material bin (7) is funnel-shaped, and the small material bin (11) is cubic.

6. An automatic feed valve apparatus as defined in claim 1, wherein: The materials in the large material bin (7) and the small material bin (11) are powdery materials, and the powdery materials are powdered baking soda.

7. A feeder valve automation apparatus according to any one of claims 1 to 6, wherein: The pneumatic actuator (4) is SC100*125S, and the electromagnetic valve (5) is 4V310-10.

8. A feeder valve automation device according to claim 7, wherein: A pressure regulating valve and a filter are further installed in front of the electromagnetic valve (5).

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