Flashboard type ash silo discharging device

Abstract

The utility model relates to a gate type ash silo discharging device which comprises a blanking hopper, a manual thin gate valve, a manual adjusting valve, a double-gate valve and a discharging pipe which are arranged from top to bottom, the upper portion of the blanking hopper is communicated with the bottom of an ash silo, and the manual thin gate valve is arranged at the bottom of the blanking hopper. The manual thin gate valve is communicated with the manual regulating valve through a first connecting pipe fitting, the manual regulating valve is communicated with the double-gate valve through a second connecting pipe fitting, and the double-gate valve is communicated with the discharging pipe through a third connecting pipe fitting. The gate type ash silo discharging device is simple in structure, easy and convenient to operate and beneficial to shortening the maintenance time and relieving the labor intensity of maintenance personnel. An original electric air locking device is omitted, so that auxiliary power is saved; and no rotating equipment is arranged, so that the source of ash discharging leakage points is fundamentally eliminated, and the problem of dust pollution during ash discharging operation of the ash silo is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of conveying devices, and more specifically, to a gate type ash bin unloading device. Background Art

[0002] In thermal power plants, fly ash collected by the electrostatic precipitator system enters the ash silo through the ash conveying pipe, and is loaded into trucks by the ash silo for secondary use through the unloading device. The current unloading device includes manual gate valves, electric air locks, pneumatic gate valves, etc. The electric air lock consists of a rotating impeller with a cell, a body, and a new cycloidal pinwheel reduction motor. When the impeller is driven by the transmission mechanism to rotate in the body, the powder and particle materials dropped from the upper part enter the impeller cell from the feed port, and are sent to the unloading port for discharge as the impeller rotates. It prevents the air from flowing when the fly ash enters another pressure range from a certain pressure range, thereby maintaining the smooth flow of powder and particles.

[0003] When the electric air lock currently used is unloaded, the fly ash is easy to wear the shaft of the electric air lock and cause ash leakage during unloading, which not only causes environmental pollution but also increases the labor maintenance cost. In addition, it is easy to be stuck by foreign objects during unloading. Therefore, a new type of unloading device is proposed to solve the above problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a gate type ash silo unloading device, which has a simple structure and is easy to operate, thereby shortening the maintenance time and reducing the labor intensity of maintenance personnel.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A gate-type ash bin unloading device comprises a drop hopper, a manual thin gate valve, a manual regulating valve, a double gate valve and a discharge pipe arranged from top to bottom, wherein the top of the drop hopper is connected with the bottom of the ash bin, the manual thin gate valve is arranged at the bottom of the drop hopper, the manual thin gate valve is connected with the manual regulating valve through a first connecting pipe fitting, the manual regulating valve is connected with the double gate valve through a second connecting pipe fitting, and the double gate valve is connected with the discharge pipe through a third connecting pipe fitting.

[0007] In one embodiment, the double-disc valve is a pneumatic double-disc valve.

[0008] In one of the embodiments, an air duct with a valve is disposed on the side of the first connecting pipe member, the air duct is communicated with the first connecting pipe member, and the air duct is connected to an external compressed air device.

[0009] In one embodiment, the first connecting pipe fitting is a first reducer, i.e., a reducer, the inner diameter of the manual thin gate valve is larger than the inner diameter of the manual regulating valve, the large inner diameter end of the first reducer is connected to the manual thin gate valve, the small inner diameter end of the first reducer is connected to the manual regulating valve, and the air guide pipe is arranged on the side of the first reducer.

[0010] In one embodiment, the second connecting pipe member is an expansion joint.

[0011] In one embodiment, the third connecting pipe fitting is a second reducer, the inner diameter of the double gate valve is smaller than the inner diameter of the discharge pipe, the small inner diameter end of the second reducer is connected to the double gate valve, and the large inner diameter end of the second reducer is connected to the discharge pipe.

[0012] In one of the embodiments, the interconnected positions among the drop hopper, the manual thin gate valve, the first connecting pipe fitting, the manual regulating valve, the second connecting pipe fitting, the double gate valve, the third connecting pipe fitting and the discharge pipe are sealed by high-pressure paper pads or flat sealants.

[0013] In one embodiment, observation holes are provided on the sides of the first connecting pipe member and the third connecting pipe member, and sealing glass is provided on the observation holes.

[0014] In one of the embodiments, a pressure sensor is disposed in the first connecting pipe.

[0015] In summary, the utility model has the following beneficial effects:

[0016] The utility model has the advantages of simple structure, easy operation and low cost, and combines the manual regulating valve with the double gate valve, so that the fly ash can be discharged smoothly and the discharge speed can be controlled, and the discharge speed is also increased; the utility model adds a manual regulating component, which is beneficial to shorten the maintenance time and reduce the labor intensity of the maintenance personnel when there are large sundries or ash blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model.

[0018] In the figure: 1. drop hopper, 2. manual thin gate valve, 3. first connecting pipe fitting, 4. manual regulating valve, 5. second connecting pipe fitting, 6. double gate valve, 7. third connecting pipe fitting, 8. discharge pipe, 9. air guide pipe. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] It is worth noting that the directional words such as "upper" and "lower" involved in this article are all relative to the viewing angle of the drawings and are only for the convenience of description and cannot be understood as limitations on the technical solution.

[0021] The utility model proposes a gate type ash silo unloading device, such as Figure 1 As shown, it includes a drop hopper 1, a manual thin gate valve 2, a manual regulating valve 4, a double gate valve 6 and a discharge pipe 8 arranged from top to bottom, the top of the drop hopper 1 is connected with the bottom of the ash bin, the manual thin gate valve 2 is arranged at the bottom of the drop hopper 1, the manual thin gate valve 2 is connected with the manual regulating valve 4 through a first connecting pipe fitting 3, the manual regulating valve 4 is connected with the double gate valve 6 through a second connecting pipe fitting 5, and the double gate valve 6 is connected with the discharge pipe 8 through a third connecting pipe fitting 7.

[0022] The utility model cancels the commonly used air lock, reconstructs the existing ash bin unloading device, and adopts the manual regulating valve 4 and the double gate valve 6 to control the unloading. The manual regulating valve 4 controls the unloading flow, and the double gate valve 6 has good sealing performance and ensures that the fly ash can be unloaded smoothly. The utility model has good overall sealing performance, and since the electric air lock is cancelled, the problem of easy ash leakage during unloading is solved.

[0023] The utility model cancels the original electric air lock, saving factory electricity; the utility model has no rotating equipment, fundamentally eliminates the root cause of ash unloading leakage, and solves the dust pollution problem during ash unloading operation in the ash warehouse.

[0024] The utility model has a simple overall structure and is easy to operate, and a manually adjustable component is added. When there are large debris or dust blockage, the maintenance time can be shortened and the labor intensity of maintenance personnel can be reduced.

[0025] Furthermore, the double-disc valve 6 is a pneumatic double-disc valve, which has the advantages of reliable opening and closing action and small starting load, strong wear resistance, small resistance, less dust jamming and dust accumulation, easy installation and maintenance, long service life and good sealing performance.

[0026] Furthermore, in order to increase the fluidity of fly ash in the device, an air guide pipe 9 with a valve is provided on the side of the first connecting pipe 3, the air guide pipe 9 is communicated with the first connecting pipe 3, and the air guide pipe 9 is connected to an external compressed air device. Compressed air is input into the device through the air guide pipe 9 to increase the fluidity of fly ash and make unloading smoother.

[0027] For example, when material blockage occurs below the manual thin gate valve 2, first close the manual thin gate valve 2, then open the valve of the air guide pipe 9, and let the compressed air enter the device to impact the material blockage position downward to make the unloading smooth, and then open the manual thin gate valve 2 again. When material blockage occurs above the manual thin gate valve 2, first close the manual regulating valve 4, then open the valve of the air guide pipe 9, and let the compressed air enter the device to impact the material blockage position upward to make it loose, and then open the manual regulating valve 4 again.

[0028] Furthermore, the first connecting pipe fitting 3 is a first reducer, i.e., a reducer and a reducer. The inner diameter of the manual thin gate valve 2 is larger than the inner diameter of the manual regulating valve 4. The large inner diameter end of the first reducer is connected to the manual thin gate valve 2, and the small inner diameter end of the first reducer is connected to the manual regulating valve 4. The air guide pipe 9 is arranged on the side of the first reducer.

[0029] Furthermore, the second connecting pipe 5 is an expansion joint. When the air guide pipe 9 is provided, the additional stress caused by mechanical vibration is compensated by providing the expansion joint.

[0030] Furthermore, the third connecting pipe fitting 7 is a second reducer, the inner diameter of the double gate valve 6 is smaller than the inner diameter of the discharge pipe 8, the small inner diameter end of the second reducer is connected to the double gate valve 6, and the large inner diameter end of the second reducer is connected to the discharge pipe 8.

[0031] Furthermore, in the drop hopper 1, the manual thin gate valve 2, the first connecting pipe fitting 3, the manual regulating valve 4, the second connecting pipe fitting 5, the double gate valve 6, the third connecting pipe fitting 7 and the discharge pipe 8, the interconnected positions are sealed by high-pressure paper pads or flat sealants to prevent leakage at each connecting part during discharge.

[0032] like Figure 1 As shown, the hopper 1 is connected to the ash bin, and the inner diameter of the top is the largest. The discharge pipe 8 is connected to the subsequent collection device, and the inner diameter of the discharge pipe 8 is also relatively large. At the position where the pipe diameter is small, an air guide pipe 9 is provided, which can cooperate with compressed air to ensure smooth unloading. The discharge flow is controlled by a manual regulating valve 4, and the double gate has good sealing performance. The device as a whole ensures smooth unloading and air tightness, effectively improves the reliability of the equipment, reduces the risk of ash leakage during unloading, and avoids environmental pollution. At the same time, the fly ash can be discharged smoothly and the unloading rate can be controlled, and the maximum unloading rate is also increased.

[0033] Furthermore, observation holes are provided on the sides of the first connecting pipe 3 and the third connecting pipe 7, and sealing glass is provided in the observation holes. When material blockage occurs, the location of the material blockage can be determined by directly observing the unloading conditions inside the first connecting pipe 3 and the third connecting pipe 7. For example, when the ash bin is unloading normally, when no fly ash is observed in the first connecting pipe 3 and the third connecting pipe 7, it is determined that material blockage occurs above the manual thin gate valve 2; when fly ash is observed in the first connecting pipe 3 but no fly ash is observed in the third connecting pipe 7, it is determined that material blockage occurs below the manual thin gate valve 2.

[0034] Furthermore, a pressure sensor is provided in the first connecting pipe 3 to detect the internal pressure of the device. When compressed air is input through the air guide pipe 9 to solve the material blockage problem, the pressure sensor will detect the pressure inside the first connecting pipe 3. When the pressure is too high, it means that the material blockage problem has not been effectively solved. In order to avoid damaging the device, the compressed air input is stopped and the material blockage problem is solved by maintenance personnel.

[0035] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A gate type ash silo unloading device, characterized in that: The invention comprises a drop hopper (1), a manual thin gate valve (2), a manual regulating valve (4), a double gate valve (6) and a discharge pipe (8) arranged from top to bottom, wherein the top of the drop hopper (1) is connected to the bottom of the ash bin, the manual thin gate valve (2) is arranged at the bottom of the drop hopper (1), the manual thin gate valve (2) is connected to the manual regulating valve (4) through a first connecting pipe (3), the manual regulating valve (4) is connected to the double gate valve (6) through a second connecting pipe (5), and the double gate valve (6) is connected to the discharge pipe (8) through a third connecting pipe (7).

2. The gate type ash silo unloading device according to claim 1 is characterized in that: The double-disc valve (6) is a pneumatic double-disc valve.

3. The gate type ash silo unloading device according to claim 1 is characterized in that: An air guide pipe (9) with a valve is arranged on the side of the first connecting pipe (3); the air guide pipe (9) is in communication with the first connecting pipe (3); and the air guide pipe (9) is connected to an external compressed air device.

4. The gate type ash silo unloading device according to claim 3 is characterized in that: The first connecting pipe (3) is a first reducer, i.e., a reducer. The inner diameter of the manual thin gate valve (2) is larger than the inner diameter of the manual regulating valve (4). The large inner diameter end of the first reducer is connected to the manual thin gate valve (2), and the small inner diameter end of the first reducer is connected to the manual regulating valve (4). The air guide pipe (9) is arranged on the side of the first reducer.

5. The gate type ash silo unloading device according to claim 3 is characterized in that: The second connecting pipe member (5) is an expansion joint.

6. The gate type ash silo unloading device according to claim 1, characterized in that: The third connecting pipe (7) is a second reducer, the inner diameter of the double-disc valve (6) is smaller than the inner diameter of the discharge pipe (8), the small inner diameter end of the second reducer is connected to the double-disc valve (6), and the large inner diameter end of the second reducer is connected to the discharge pipe (8).

7. The gate type ash silo unloading device according to claim 1 is characterized in that: Among the drop hopper (1), the manual thin gate valve (2), the first connecting pipe (3), the manual regulating valve (4), the second connecting pipe (5), the double gate valve (6), the third connecting pipe (7) and the discharge pipe (8), the interconnected positions are sealed by means of high-pressure paper pads or flat sealants.

8. The gate type ash silo unloading device according to claim 3, characterized in that: Observation holes are also provided on the sides of the first connecting pipe member (3) and the third connecting pipe member (7), and the observation holes are provided with sealing glass.

9. The gate type ash silo unloading device according to claim 3, characterized in that: A pressure sensor is arranged in the first connecting pipe (3).

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