Novel stokehole feeding device with fire-fighting function

Abstract

The utility model discloses a novel stokehole feeding device with a fire-fighting function, which comprises a stock bin and a spiral material shifting device arranged in the stock bin, a discharge port of the stock bin is connected with the top end of a stock bin blanking pipe, the bottom end of the stock bin blanking pipe is connected with a feed port of a star-shaped feeder, a discharge port of the star-shaped feeder is connected with the top end of an articulated chute, and the top end of the articulated chute is connected with a discharge port of the star-shaped feeder. The bottom end of the articulated chute is connected with a feeding port of a screw feeder, a discharging port of the screw feeder is connected with a blanking output pipe, a temperature sensor is arranged in the screw feeder, the screw feeder is further connected with a water source through a fire hose, and a fire control valve is arranged on the fire hose. The screw feeder is connected with an air source through a sealing air pipe, and an air valve is arranged on the sealing air pipe. The material bin is even in material taking and feeding, not prone to backfire and flue gas backflow, capable of automatically spraying water to extinguish fire at high temperature and capable of avoiding fire accidents.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass boilers, in particular to a novel furnace front feeding device with fire-fighting function, which is suitable for feeding fuel of biomass boilers. Background Art

[0002] At present, most of the coal-fired thermal power stations in self-contained power plants have been replaced by biomass thermal power stations. Biomass fuels are made from industrial organic waste: pulping light residue, papermaking sludge, wood chips, wood chips, and palm shell mixed biomass fuels, and there are also separate biomass fuels. At present, biomass fuels are mixed with various fuels, especially fuels with very different particle sizes and densities. It is adaptable to fuels, but because it has advantages that cannot be replaced by other processes, sanitation, final outlet, and disposal area, it has advantages that other processes cannot match. It is the best way to solve the final outlet of coal and garbage. Because biomass fuels have great advantages and use biomass power generation technology, it is increasingly welcomed by various companies. The existing biomass boiler feeding device is prone to backfire during the feeding process and burns in the silo. In severe cases, it burns the silo and the entire feeding system, making the boiler unable to feed normally, affecting the safety and economic benefits of the boiler. Utility Model Content

[0003] The utility model aims to solve the above problems in the prior art and provides a novel furnace front feeding device with fire-fighting function.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel furnace front feeding device with fire-fighting function includes a silo and a spiral feeding device arranged in the silo, the discharge port of the silo is connected to the top of the silo feeding pipe, the bottom of the silo feeding pipe is connected to the feeding port of a star feeder, the discharge port of the star feeder is connected to the top of a chute, the bottom of the chute is connected to the feeding port of the spiral feeder, the discharge port of the spiral feeder is connected to the feeding output pipe, a temperature sensor is arranged in the spiral feeder, the spiral feeder is also connected to a water source through a fire water pipe, and a fire control valve is arranged on the fire water pipe.

[0006] As mentioned above, a pneumatic valve is provided on the slide pipe.

[0007] As mentioned above, the spiral feeder is connected to the air source through a sealed air duct, and an air valve is arranged on the sealed air duct.

[0008] As mentioned above, the screw feeder comprises a feeder housing and a screw feeder rod arranged in the feeder housing, and the feeder housing is provided with a feed inlet and a discharge outlet.

[0009] A novel furnace front feeding device with fire-fighting function also includes a control cabinet, in which a spiral feeding device controller, a star feeder controller, a fire control valve controller, and a temperature collection device are arranged.

[0010] The spiral feeding device controller is connected to the spiral feeding device, the star feeder controller is connected to the star feeder, the fire control valve controller is connected to the fire control valve, and the temperature collection device is connected to the collection temperature sensor.

[0011] As mentioned above, the control cabinet also includes a pneumatic valve controller and a wind valve controller, the pneumatic valve controller is connected to the pneumatic valve, and the wind valve controller is connected to the wind valve.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The star-shaped feeder was set up to solve the problem of uneven material collection in the silo;

[0014] 2. The star feeder and the spiral feeder are used together to solve the problem of feeding blockage in front of the furnace;

[0015] 3. Solved the problem that the feeding device is prone to backfire during the feeding process, which is prone to fire accidents;

[0016] 4. By adding a sealed air duct, the problem of flue gas backflow during the combustion process is solved.

[0017] 5. The temperature inside the screw feeder is obtained through the temperature sensor. When the monitored temperature is higher than the set threshold, the pneumatic valve can be closed and the fire control valve can be opened to automatically spray water to extinguish the fire, so as to control the temperature rise in time and prevent fire accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] On the way: 1. Silo; 1-1. Screw feeding device; 1-2. Silo feeding pipe; 2-Star feeder; 2-1. Slide pipe; 2-2. Pneumatic valve; 3. Screw feeder; 3-1. Feeding output pipe; 3-2. Sealed air duct; 3-3. Air valve; 3-4. Fire water pipe; 3-5. Fire control valve; 3-6. Temperature sensor; 4. Control cabinet. DETAILED DESCRIPTION

[0020] In order to facilitate ordinary technicians in this field to understand and implement the present invention, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the implementation examples described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0021] Embodiment 1:

[0022] like Figure 1 As shown, a novel furnace front feeding device with fire-fighting function includes a silo 1 and a spiral feeding device 1-1 arranged in the silo 1. The discharge port of the silo 1 is connected to the top of the silo feeding pipe 1-2, and the bottom of the silo feeding pipe 1-2 is connected to the feeding port of the star feeder 2. The spiral feeding device 1-1 is an existing spiral feeding device, which is used to spirally feed the fuel in the silo 1 to the discharge port of the silo 1 and input it into the star feeder through the silo feeding pipe 1-2. The feed port of the feeder and the discharge port of the star feeder 2 are connected to the top of the chute 2-1, and the bottom of the chute 2-1 is connected to the feed port of the screw feeder 3. The chute 2-1 is provided with a pneumatic valve 2-2. The star feeder 2 distributes the fuel evenly and outputs the fuel to the screw feeder 3 through the chute 2-1 according to the set feeding amount. In addition, the star feeder 2 plays the role of isolating the screw feeder 3 and the silo 11, thereby protecting the silo 1. The discharge port of the screw feeder 3 is connected to the blanking output pipe 3-1. The screw feeder 3 is responsible for pushing the fuel into the boiler furnace through the blanking output pipe 3-1. The screw feeder 3 is provided with a temperature sensor 3-6. The screw feeder 3 is also connected to the water source through the fire water pipe 3-4. The fire control valve 3-5 is provided on the fire water pipe 3-4. The screw feeder 3 includes a feeder housing and a screw feeder rod arranged in the feeder housing. The feeder housing is provided with a feed port and a discharge port. The fire water pipe 3-4 is connected to the feeder housing. The temperature sensor 3-6 in the screw feeder 3 is used to measure the temperature in the screw feeder 3. When flashback occurs, the temperature in the screw feeder 3 will exceed the set threshold value, thereby knowing that flashback has occurred. The fire control valve 3-5 can be opened to introduce water into the screw feeder 3 to cool it down and reduce the damage of flashback to the screw feeder 3.

[0023] Embodiment 2:

[0024] On the basis of Example 1, the screw feeder 3 is further connected to the air source through the sealed air duct 3-2, and the sealed air duct 3-2 is provided with an air valve 3-3; when the air valve 3-3 is opened, the air source blows air into the screw feeder 3 through the sealed air duct 3-2, and is further discharged through the discharge port of the screw feeder 3, further preventing the backfire from entering the screw feeder 3 through the blanking output pipe 3-1, thereby reducing the risk of backfire. As a preferred solution, the air outlet direction of the sealed air duct 3-2 in the screw feeder 3 is toward the discharge port of the screw feeder 3.

[0025] Embodiment 3:

[0026] On the basis of Example 2, a new type of furnace front feeding device with fire-fighting function also includes a control cabinet 4, in which a spiral feeding device controller, a star feeder controller, a pneumatic valve controller, an air valve controller, a fire control valve controller, and a temperature collection device are arranged.

[0027] The spiral feeding device controller is connected to the spiral feeding device, and is used to control the start and stop and the speed of the spiral feeding device; the star feeder controller is connected to the star feeder 2, and is used to control the start and stop and the speed of the star feeder 2; the pneumatic valve controller is connected to the pneumatic valve 2-2, and is used to control the on and off of the pneumatic valve 2-2; the air valve controller is connected to the air valve 3-3, and is used to control the on and off of the air valve 3-3; the fire control valve controller is connected to the fire control valve 3-5, and is used to control the on and off of the fire control valve 3-5; the temperature acquisition device is connected to the acquisition temperature sensor 3-6, and is used to obtain the temperature collected by the temperature sensor 3-6.

[0028] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A novel furnace front feeding device with fire-fighting function, comprising a silo (1), characterized in that: The invention also comprises a spiral material feeding device (1-1) arranged in the silo (1); the material outlet of the silo (1) is connected to the top of the material silo feeding pipe (1-2); the bottom of the material silo feeding pipe (1-2) is connected to the material inlet of the star feeder (2); the material outlet of the star feeder (2) is connected to the top of the slide pipe (2-1); the bottom of the slide pipe (2-1) is connected to the material inlet of the spiral feeder (3); the material outlet of the spiral feeder (3) is connected to the material inlet output pipe (3-1); a temperature sensor (3-6) is arranged in the spiral feeder (3); the spiral feeder (3) is also connected to a water source via a fire hose (3-4); and a fire control valve (3-5) is arranged on the fire hose (3-4).

2. According to claim 1, a new type of furnace front feeding device with fire-fighting function is characterized in that: The slide pipe (2-1) is provided with a pneumatic valve (2-2).

3. According to claim 2, a new type of furnace front feeding device with fire-fighting function is characterized in that: The spiral feeder (3) is connected to an air source via a sealed air duct (3-2), and an air valve (3-3) is provided on the sealed air duct (3-2).

4. According to the novel furnace front feeding device with fire-fighting function as claimed in claim 1, it is characterized in that: The screw feeder (3) comprises a feeder housing and a screw feeder rod arranged in the feeder housing, and the feeder housing is provided with a feed inlet and a discharge outlet.

5. According to claim 3, a new type of furnace front feeding device with fire-fighting function is characterized in that: It also includes a control cabinet (4), in which a screw feeding device controller, a star feeder controller, a fire control valve controller, and a temperature collection device are arranged. The spiral material feeding device controller is connected to the spiral material feeding device (1-1), the star feeder controller is connected to the star feeder (2), the fire control valve controller is connected to the fire control valve (3-5), and the temperature collection device is connected to the collection temperature sensor (3-6).

6. According to claim 5, a new type of furnace front feeding device with fire-fighting function is characterized in that: The control cabinet (4) also includes a pneumatic valve controller and a wind valve controller, the pneumatic valve controller is connected to the pneumatic valve (2-2), and the wind valve controller is connected to the wind valve (3-3).

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