Feeding device of biomass boiler

Abstract

The utility model discloses a feeding device of a biomass boiler, and relates to the technical field of boiler feeding hoppers, the feeding device comprises a hopper and a driving device fixed on the hopper, the output end of the driving device is fixedly connected with a feeding roller, the feeding roller comprises a fixed disc and a rolling shaft, the rolling shaft is fixed on one side of the fixed disc, and the fixed disc is fixedly connected with the driving device. And separation frames are arranged on the outer wall of the rolling shaft in a circumferential array mode, a material groove is formed between every two adjacent separation frames, storage cavities are formed in the separation frames, an adjusting frame is arranged on one side of the feeding roller, and the adjusting frame comprises an extending block and an adjusting disc. According to the feeding device of the biomass boiler, the size of the trough can be adjusted so as to adapt to fuels with different sizes, universality is improved, the problem that the fixed trough cannot conveniently and accurately control the fuels is solved, and the function of automatically and accurately adding materials is achieved through cooperation with the variable frequency motor.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler feeding hoppers, and more specifically to a feeding device for a biomass boiler. Background Art

[0002] Biomass boiler is a type of boiler. The boiler that uses biomass energy as fuel is called a biomass boiler. It is divided into biomass steam boiler, biomass hot water boiler, biomass hot air furnace, biomass thermal oil furnace, vertical biomass boiler, horizontal biomass boiler, etc. The boiler can be equipped with a fuel (gas) ignition burner to realize automatic ignition. The feeding, combustion, slag removal, water supply and ignition of the boiler can all be automatically controlled, which is very convenient to operate. The feeding end of the biomass boiler is equipped with a feed hopper device, and the inside of the feed hopper is equipped with a lock, which can adjust the amount of feed added each time, and at the same time prevent the fuel from backfiring, so as to increase the safety of the equipment. The rolling structure set at the feed port of the biomass boiler has the function of quantitative and anti-backfire. The fuel will first fall into the storage tank on the rolling structure. When the rolling device rotates one circle, it falls on the conveying device below by its own weight.

[0003] In the Chinese utility model patent application number: CN217843842U, there is disclosed a backburning prevention structure based on biomass boiler pellet fuel, which includes a hopper; the backburning prevention assembly is installed inside the hopper; the positioning assembly is installed on the left side of the hopper; the driving mechanism is installed on the right side of the hopper; the connecting shaft is rotatably connected to the hopper, and the outer wall of the connecting shaft is provided with four positioning grooves; the mounting column is fixedly installed on the outer wall of the connecting shaft; the mounting block is fixedly connected to the hopper; the positioning shaft is slidably installed on the mounting block, and the top of the positioning shaft is a hemispherical structure, and the positioning shaft is inserted into the lower positioning groove. The backburning prevention structure based on biomass boiler pellet fuel is to drive the backburning prevention assembly to rotate intermittently by a gear with only half of the gear to achieve the function of controlling fuel addition. However, the control method of half of the gear is prone to metal fatigue, which leads to the breakage of the teeth on the gear. At the same time, it is not convenient to adjust the amount of fuel added, and the amount of addition can only be adjusted by adjusting the speed of the driving device.

[0004] The current biomass boiler feeding device also has the following problems:

[0005] Currently, the size of the storage tanks on the rolling structure is fixed, while fuels have many different sizes. Storage tanks of different sizes are not convenient for use with all fuels. For example, large pieces of fuel are not convenient to use small storage tanks. Although small pieces of fuel can use large storage tanks, it will result in too much fuel being released at a single time, which makes it inconvenient to add the fuel accurately.

[0006] Therefore, it is necessary to propose a feeding device for a biomass boiler to solve the above problems. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] The purpose of the utility model is to solve the problems raised in the above background technology and provide a feeding device for a biomass boiler.

[0009] (II) Technical solution

[0010] In order to achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0011] A feeding device for a biomass boiler, comprising a hopper and a driving device fixed on the hopper, wherein a feeding roller is fixedly connected to the output end of the driving device, wherein the feeding roller comprises a fixed disk and a roller shaft, wherein the roller shaft is fixed to one side of the fixed disk, wherein a partition frame is arranged in a circumferential array on the outer wall of the roller shaft, wherein a material trough is arranged between adjacent partition frames, wherein a storage cavity is provided inside the partition frame, wherein an adjustment frame is arranged on one side of the feeding roller, wherein the adjustment frame comprises an extension block and an adjustment disk, wherein the extension block is located in the storage cavity;

[0012] The extension blocks are arranged in a circular array on one side of the adjustment disk, one side of the extension blocks is fixedly connected to a baffle located outside the storage cavity, both ends of the extension blocks are fixedly connected to support rings, and the support rings and the extension blocks are rotatably connected on the outer wall of the roller;

[0013] The end of the roller away from the driving device is fixedly connected to a rotating shaft that passes through the adjustment disk, the end of the rotating shaft is fixedly connected to a fixed block, one end of the adjustment frame is fixedly connected to the adjusting shaft, the adjusting shaft is rotatably connected along the outer wall of the rotating shaft, the end of the adjusting shaft is fixedly connected to a rotating block, a rotating disk is arranged outside the fixed block and the rotating block, a spline ring is fixedly connected to the inner wall of the rotating disk, and a spline portion corresponding to the spline ring is arranged on the outer wall of the fixed block and the rotating block;

[0014] A protection box is fixedly connected to the side wall of the hopper, and the protection box is sleeved on the outside of the turntable. A spring is provided between the protection box and the adjustment disk, and the spring pushes the spline ring to sleeve on the spline parts of the fixed block and the rotating block.

[0015] Preferably, the interior of the extension block is arranged to be hollow, and both ends of the partition frame are provided with rotation grooves corresponding to the support ring.

[0016] Preferably, a dial is provided on the outer wall of the adjustment disk, the position of the dial corresponds to the width of the material trough, and a pointer for indicating the value of the dial is provided on the baffle.

[0017] Preferably, a gate shaft is rotatably connected to the inner wall of the hopper, a water-cooled material gate is connected to the gate shaft via a rope, and a rotating assembly drivingly connected to the gate shaft is installed on the side wall of the hopper.

[0018] Preferably, a partition plate is fixedly connected to the inner wall of the hopper for separating the gate shaft from the feed roller, and a material guide plate located outside the feed roller is fixedly connected to the inner wall of the hopper.

[0019] Preferably, a cover plate is connected to the protection box by bolts.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] 1. The device is provided with an extension block component inside the partition frame. The extension block can be extended from the storage cavity to reduce the size of the material trough, so as to reduce the storage capacity when adding small pieces of fuel. The material trough can be adjusted accordingly according to the size of the fuel to adapt to fuels of different sizes, thereby increasing versatility and solving the problem that when adding small pieces of fuel, the fixed material trough will cause too much fuel to be put in at a time, making it inconvenient to accurately control the fuel. In addition, the device can achieve the effect of automatic and accurate adding of fuel by cooperating with the frequency conversion motor.

[0022] 2. The device is provided with a dial on the adjustment plate. When the size of the trough is adjusted, the baffle moves along the dial with the pointer, which can intuitively display the size of the trough at this time, so as to accurately adjust the size of the trough. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a left-side stereoscopic schematic diagram of the structure of the utility model;

[0024] Figure 2 It is a right-side stereoscopic schematic diagram of the structure of the utility model;

[0025] Figure 3 It is a cross-sectional schematic diagram of the structure of the utility model;

[0026] Figure 4 It is a three-dimensional schematic diagram of the connection structure between the driving device and the feed roller in the utility model;

[0027] Figure 5 It is a three-dimensional schematic diagram of the connection structure between the feed roller and the roller in the utility model;

[0028] Figure 6 It is a cross-sectional schematic diagram of the feed roller in the utility model;

[0029] Figure 7 It is a three-dimensional schematic diagram of the connection structure between the baffle plate and the support ring of the utility model;

[0030] Figure 8 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the adjustment plate and the protection box in the utility model;

[0031] Fig. 9 It is a partial three-dimensional cross-sectional schematic diagram of the connection structure between the spline ring and the rotating disk in the utility model;

[0032] Fig.10 It is a three-dimensional schematic diagram of the connection structure between the adjustment shaft and the rotating block in the utility model.

[0033] Reference numerals:

[0034] 101. hopper; 102. driving device; 103. feed roller; 104. fixed plate; 105. roller; 106. partition frame; 107. material trough; 108. storage chamber; 109. adjustment frame; 110. extension block; 111. adjustment plate; 112. baffle; 113. support ring; 114. rotating shaft; 115. fixed block; 116. adjustment shaft; 117. rotating block; 118. turntable; 119. spline ring; 120. spline part; 121. protective box; 122. spring; 123. rotating groove; 124. dial; 125. pointer; 126. gate shaft; 127. water-cooled material gate; 128. rotating assembly; 129. partition plate; 130. material guide plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] See also Figure 1-10A feeding device for a biomass boiler includes a hopper 101 and a driving device 102 fixed on the hopper 101. The hopper 101 is a feeding port on the boiler, which is arranged on a conveying device in the boiler. The fuel is added from the hopper 101, and after passing through the hopper 101, it will fall on the conveying device at the bottom and be sent into the boiler by the conveying device. The driving device 102 is a power source, and a reducer is installed on it. A brake structure is installed on the reducer to increase the braking capacity of the equipment. The driving device 102 adopts a variable frequency motor, which can automatically adjust the feeding amount and has the ability to be adjusted in real time. It cooperates with a feeding roller 103 to achieve the function of accurately controlling the amount of added material. The output end of the driving device 102 is fixedly connected to the feeding roller 103, and the feeding roller 103 includes The driving device 102 drives the roller 105 to rotate through the fixed disk 104. The roller 105 is fixed to one side of the fixed disk 104. The outer wall of the roller 105 is provided with a partition frame 106 in a circumferential array. A material slot 107 is set between adjacent partition frames 106. The number of the partition frames 106 corresponds to the number of the material slots 107. A storage cavity 108 is provided inside the partition frame 106. The storage cavity 108 inside the storage cavity 108 is used to store the extension block 110. When the extension block 110 is extended, the size of the material slot 107 will be reduced accordingly. An adjustment frame 109 is provided on one side of the feed roller 103. The adjustment frame 109 includes an extension block 110 and an adjustment disk 111. The extension block 110 is located in the storage cavity 108.

[0037] refer to Figure 4 and Figure 7 , the extension blocks 110 are arranged in a circular array on one side of the adjustment disk 111, the number of the extension blocks 110 is the same as that of the partition frame 106, one side of the extension block 110 is fixedly connected with a baffle 112 located outside the storage chamber 108, and a pointer 125 is provided on the baffle 112 for indicating the value on the dial 124, and the two ends of the extension block 110 are fixedly connected with support rings 113, and the support rings 113 are used to support the extension block 110 to rotate along the roller 105, and the partition frame 106 is provided with a corresponding rotation groove 123, and the support ring 113 and the extension block 110 are rotatably connected on the outer wall of the roller 105;

[0038] refer to Figures 8 to 10The end of the roller 105 away from the driving device 102 is fixedly connected with a rotating shaft 114 that penetrates the adjustment disk 111. The roller 105 drives the fixed block 115 to rotate through the rotating shaft 114, and the fixed block 115 drives the rotating block 117 to rotate synchronously through the spline ring 119. The end of the rotating shaft 114 is fixedly connected with the fixed block 115. One end of the adjustment frame 109 is fixedly connected with an adjustment shaft 116. The adjustment shaft 116 is rotatably connected along the outer wall of the rotating shaft 114. The end of the adjusting shaft 116 is fixedly connected with the rotating block 117. The spline ring 119 passes through the spline portion 12 of the inner wall. 0 To maintain the synchronous rotation of the fixed block 115 and the rotating block 117, a rotating disk 118 is provided on the outside of the fixed block 115 and the rotating block 117, and a hand wheel for gripping is provided on the rotating disk 118, and a spline ring 119 is fixedly connected to the inner wall of the rotating disk 118, and the spline ring 119 is connected to the fixed block 115 and the rotating block 117 through a spline portion 120. When the rotating disk 118 is pressed, it will be separated from the fixed block 115, and at this time, the rotating block 117 can be driven to rotate alone, and a spline portion 120 corresponding to the spline ring 119 is provided on the outer wall of the fixed block 115 and the rotating block 117;

[0039] refer to Figure 8 and Fig. 9 A protection box 121 is fixedly connected to the side wall of the hopper 101. The protection box 121 can protect the turntable 118 to prevent people from accidentally touching the turntable 118 when the equipment is running. The protection box 121 is sleeved on the outside of the turntable 118. A spring 122 is provided between the protection box 121 and the adjustment disk 111. The spring 122 pushes the spline ring 119 to be sleeved on the rotating block 117 and the fixed block 115. The spring 122 pushes the spline ring 119 to be sleeved on the spline portion 120 of the fixed block 115 and the rotating block 117.

[0040] Specifically, refer to Figure 5 and Figure 6 The interior of the extension block 110 is set to be hollow, and the hollow setting can reduce the weight of the feed roller 103 and reduce the production cost. The two ends of the partition frame 106 are provided with rotation grooves 123 corresponding to the support ring 113.

[0041] Specifically, refer to Figure 7 A dial 124 is provided on the outer wall of the adjustment plate 111, and a scale is set on the dial 124. The size of the material trough 107 at this time can be displayed through a pointer 125. The position of the dial 124 corresponds to the width of the material trough 107, and a pointer 125 for indicating the value of the dial 124 is provided on the baffle 112.

[0042] Specifically, refer to Figure 3A gate shaft 126 is rotatably connected to the inner wall of the hopper 101, and a water-cooled material gate 127 is connected to the gate shaft 126 through a rope. When the water-cooled material gate 127 is lowered, it can be parallel to the surface of the conveying device, thereby separating the fuel on the conveying device, which has the function of controlling the feeding. A rotating assembly 128 is installed on the side wall of the hopper 101, which is transmission-connected to the gate shaft 126. The rotating assembly 128 consists of a handwheel, a turbine and a worm.

[0043] Specifically, refer to Figures 1 to 3 A partition plate 129 is fixedly connected to the inner wall of the hopper 101, which separates the gate shaft 126 from the feed roller 103. The partition plate 129 can prevent the fuel from entering one side of the water-cooled material gate 127. A guide plate 130 is fixedly connected to the inner wall of the hopper 101 and is located outside the feed roller 103. The guide plate 130 is used to block the fuel and guide the fuel to the feed roller 103.

[0044] Specifically, refer to Figure 1 A cover plate is connected to the protection box 121 by bolts to increase the protection capability of the equipment.

[0045] In this embodiment, the hopper 101 is arranged on the feed conveying device of the boiler, the internal gate shaft 126 controls the opening and closing of the water-cooled material gate 127 by rotation, the rotating assembly 128 can drive the gate shaft 126 to rotate, the driving device 102 is installed on the side wall of the hopper 101, and the output end of the driving device 102 drives the feed roller 103 to rotate. When in use, the fuel is added into the feed hopper 101 from the top of the hopper 101, and the driving device 102 drives the feed roller 103 to rotate. The fuel will fall on the top of the guide plate 130, and then move to the material trough 107, and rotate with the feed roller 103. When it rotates to the bottom, it will fall to the conveying device at the bottom due to its own weight, and then be sent into the boiler;

[0046] When the feed roller 103 rotates, the roller 105 drives the fixed block 115 to rotate through the rotating shaft 114, and the fixed block 115 drives the rotating block 117 to rotate synchronously through the spline ring 119 on the outer wall, and then drives the adjusting frame 109 to rotate synchronously through the adjusting shaft 116, so that the feed roller 103 and the adjusting frame 109 can maintain synchronous rotation;

[0047] When it is necessary to adjust the size of the feed trough 107 of the feed roller 103 to add the corresponding small pieces of fuel, first stop the equipment, remove the cover plate on the protection box 121, press the turntable 118 in the protection box 121, the turntable 118 drives the spline ring 119 to move toward the direction of the drive device 102, and the internal spline ring 119 will be separated from the fixed block 115, but will not be separated from the rotating block 117. At this time, the turntable 118 is rotated, and the turntable 118 drives the rotating block 117 to rotate through the spline ring 119. The rotating block 117 drives the adjustment frame 109 to rotate on the outer wall of the roller 105 through the adjustment shaft 116, so that the extension block 110 is removed from the storage cavity 100 inside the partition frame 106. 8 extends out, thereby reducing the size of the material trough 107 to reduce the storage capacity of small pieces of fuel. At the same time, the extension block 110 will drive the baffle 112 to move together, and the pointer 125 at one end of the baffle 112 will move along the dial 124. The value indicated by the pointer 125 can intuitively display the size of the material trough 107 at this time. When the adjustment is completed, release the turntable 118. The turntable 118 is pushed by the spring 122 on one side and is inserted into the outer wall of the fixed block 115 again to complete the reset. After completion, the cover of the protective box 121 is installed by bolts. It should be noted that the reducer on the drive device 102 is equipped with a brake structure, so when the turntable 118 is rotated, the feed roller 103 will remain stationary.

[0048] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A feeding device for a biomass boiler, comprising a hopper (101) and a driving device (102) fixed to the hopper (101), characterized in that: The output end of the driving device (102) is fixedly connected to a feed roller (103), the feed roller (103) comprising a fixed disk (104) and a roller (105), the roller (105) being fixed to one side of the fixed disk (104), the outer wall of the roller (105) being provided with partition frames (106) in a circumferential array, material troughs (107) being provided between adjacent partition frames (106), a storage cavity (108) being provided inside the partition frames (106), an adjustment frame (109) being provided on one side of the feed roller (103), the adjustment frame (109) comprising an extension block (110) and an adjustment disk (111), the extension block (110) being located in the storage cavity (108); The extension blocks (110) are arranged in a circular array on one side of the adjustment disk (111); one side of the extension block (110) is fixedly connected to a baffle (112) located outside the storage cavity (108); both ends of the extension block (110) are fixedly connected to support rings (113); the support ring (113) and the extension block (110) are rotatably connected on the outer wall of the roller (105); One end of the roller (105) away from the driving device (102) is fixedly connected to a rotating shaft (114) penetrating the adjustment disk (111); the end of the rotating shaft (114) is fixedly connected to a fixed block (115); one end of the adjustment frame (109) is fixedly connected to an adjustment shaft (116); the adjustment shaft (116) is rotatably connected along the outer wall of the rotating shaft (114); the end of the adjustment shaft (116) is fixedly connected to a rotating block (117); a rotating disk (118) is provided outside the fixed block (115) and the rotating block (117); a spline ring (119) is fixedly connected to the inner wall of the rotating disk (118); and a spline portion (120) corresponding to the spline ring (119) is provided on the outer walls of the fixed block (115) and the rotating block (117); A protection box (121) is fixedly connected to the side wall of the hopper (101), and the protection box (121) is sleeved on the outside of the rotating disk (118). A spring (122) is provided between the protection box (121) and the adjustment disk (111), and the spring (122) pushes the spline ring (119) to be sleeved on the spline parts (120) of the fixed block (115) and the rotating block (117).

2. A feeding device for a biomass boiler according to claim 1, characterized in that: The interior of the extension block (110) is arranged to be hollow, and both ends of the partition frame (106) are provided with rotation grooves (123) corresponding to the support ring (113).

3. A feeding device for a biomass boiler according to claim 2, characterized in that: A scale plate (124) is provided on the outer wall of the adjustment plate (111), the position of the scale plate (124) corresponds to the width of the material trough (107), and a pointer (125) for indicating the value of the scale plate (124) is provided on the baffle plate (112).

4. A feeding device for a biomass boiler according to claim 3, characterized in that: A gate shaft (126) is rotatably connected to the inner wall of the hopper (101), a water-cooled material gate (127) is connected to the gate shaft (126) via a rope, and a rotating assembly (128) drivingly connected to the gate shaft (126) is installed on the side wall of the hopper (101).

5. A feeding device for a biomass boiler according to claim 4, characterized in that: A partition plate 129 (129) is fixedly connected to the inner wall of the hopper (101) for separating the gate shaft (126) from the feed roller (103), and a guide plate (130) located outside the feed roller (103) is fixedly connected to the inner wall of the hopper (101).

6. A feeding device for a biomass boiler according to claim 5, characterized in that: A cover plate is connected to the protection box (121) via bolts.

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