Packing type star-shaped feeder and hearth feeding system
By setting a flexible plate on the edge of the blade of the star feeder, the problem of RDF paper slag being limited inflow and smoke return during feeding is solved, and the feed port and outlet partition is realized during feeding, ensuring the normal operation of the feed system and the safety of the working environment.
Patent Information
- Application Number
- CN202421229211.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-05-31
AI Technical Summary
In the thermoelectric system of the paper mill, when RDF paper slag is fed into the furnace, due to the limitation of primary air gas and the positive pressure of the furnace, the entry volume is limited, and smoke returns during combustion, affecting the working environment.
A sealed star feeder is designed, which is equipped with a flexible plate at the edge of the blade. The edge of the flexible plate protrudes outside the blade and is fitted with the inner wall of the shell to form a plurality of spaced cavity areas to ensure that the feed slurry can be separated from the feed port and the discharge port when it rotates, and prevent smoke return.
By adding flexible plates, the area of the blade is expanded and the inner wall of the shell is softly rubbed, and the partition between the feeding port and the discharge port during feeding is achieved, which avoids smoke return, and improves the structural simplicity of the feeding system and the convenience of feeding.
Smart Images
Figure CN222616937U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of furnace feeding, and in particular relates to a sealed star feeder and a furnace feeding system. Background Art
[0002] For paper mills, RDF paper slag is generated during the production process. Although RDF paper slag cannot be reused, it is a pity to discard it. RDF paper slag is flammable and can be used as fuel for the thermal power system of the paper mill. There is no sulfur in RDF paper slag, so its combustion can reduce the load of the desulfurization tower of the thermal power system. At present, RDF paper slag is fed into the furnace body by wind using primary air gas, and the intersection of the furnace body is in a positive pressure state, which limits the amount of RDF paper slag entering. In addition, smoke will be returned through the feeding passage during combustion, affecting the working environment of the staff. Utility Model Content
[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a sealed star feeder which has a simple structure and can prevent smoke from returning when feeding materials into the furnace.
[0004] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a sealed star feeder, comprising a star feeder body, the star feeder body having a shell and a feed slurry arranged in the shell and rotatable, the feed slurry having a plurality of blades, the feed port of the star feeder body facing upward, and the discharge port of the star feeder body facing downward; characterized in that a flexible plate is arranged at the edge of each of the blades, and the edge of the flexible plate protrudes out of the blade and fits with the cavity wall of the shell, and the plurality of blades and the plurality of flexible plates jointly divide the shell into a plurality of mutually separated cavity areas along the circumferential direction.
[0005] The beneficial effects of the above technical solution are as follows: by adding a flexible plate to the paddle, and the edge of the flexible plate protrudes outside the paddle, and the edge of the flexible plate is against the inner wall of the shell, its essence is to increase the area of the paddle through the flexible plate and softly rub against the inner wall of the shell, and the multiple paddles together with the flexible plates thereon separate the distribution inside the shell, so that even when the feed slurry is rotating, the feed slurry can separate the feed port and the discharge port of the star feeder.
[0006] The flexible plate in the above technical solution is a rubber material piece.
[0007] The above technical solution has the following beneficial effects: it has good flexibility and good wear resistance.
[0008] The feed slurry in the above technical solution also has a central axis, and a plurality of blades are arranged on the central axis along the axis and are distributed at intervals along the circumferential direction, and each blade is distributed radially along the central axis.
[0009] The beneficial effect of the above technical solution is that the gap between the edge of each blade and the inner wall of the shell is consistent.
[0010] In the above technical solution, the blade is a square plate, and the side of the flexible plate away from the central axis and the two ends of the flexible plate close to the blade both protrude outside the blade.
[0011] The beneficial effect of the above technical solution is that the partition effect of the flexible board is good.
[0012] In the above technical solution, the inner cavity of the shell is a cylindrical and horizontally distributed cavity, the feed slurry is coaxially distributed and rotationally connected in the shell, and the feed port and the discharge port of the star feeder body are respectively arranged at the upper and lower ends of the shell.
[0013] The beneficial effects of the above technical solution are: its structure is simple, and both feeding and discharging are convenient without material stagnation.
[0014] The second purpose of the utility model is to provide a furnace feeding system which has a simple structure and is not affected by the positive pressure of the furnace body feeding port during feeding and does not return smoke.
[0015] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a furnace feeding system, comprising a furnace body, a screw feeder and the enclosed star feeder as described above, the side wall of the furnace body having a feed port, the discharge port of the screw feeder being connected and communicated with the feed port of the furnace body, the feed port of the screw feeder facing upward, the enclosed star feeder being arranged above the screw feeder, and the feed port of the screw feeder being communicated with the discharge port of the enclosed star feeder.
[0016] The beneficial effects of the above technical solution are: its structure is simple and feeding is convenient, so that the sealed star feeder can first feed vertically, and then the screw feeder can feed horizontally so that the fuel can smoothly overcome the positive pressure at the furnace feed port and enter the furnace.
[0017] The above technical solution also includes a feeding piece, the lower end of which has a discharge port, and the discharge port of the feeding piece is connected to the feed port of the star feeder body, and the feeding piece is used to store fuel.
[0018] The beneficial effect of the above technical solution is that the fuel can be stored in the supply member in advance, and the supply member can be used to supply the fuel stably.
[0019] The feeding member described in the above technical solution is a storage bin or a hopper.
[0020] The beneficial effect of the above technical solution is that it has a simple structure and can stably supply fuel to the furnace body.
[0021] In the above technical solution, a vibrating member is provided at the connection point between the feed port of the star-shaped feeder body and the feeding member.
[0022] The beneficial effect of the above technical solution is that it can avoid blockage at the feed inlet of the star feeder body and cause poor feeding.
[0023] The spiral feeding part of the spiral feeder described in the above technical solution is a shaftless spiral blade.
[0024] The beneficial effects of the above technical solution are: it has a large conveying capacity and will not cause material blockage. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a radial cross-sectional view of the enclosed star feeder described in Example 1 of the utility model;
[0026] Figure 2 This is an axial cross-sectional view of the enclosed star feeder described in Example 1 of the utility model;
[0027] Figure 3 It is a side view of the feed slurry described in Example 1 of the utility model;
[0028] Figure 4 This is a structural schematic diagram of the furnace feeding system described in Example 2 of the utility model.
[0029] In the figure: 1 sealed star feeder; 11 star feeder body; 111 feeding slurry; 1111 blade; 1112 center shaft; 112 housing; 113 motor; 12 flexible plate; 2 furnace body; 3 screw feeder; 4 feeding member; 5 vibrating member. DETAILED DESCRIPTION
[0030] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention.
[0031] Example 1
[0032] like Figure 1-Figure 3As shown, this embodiment provides a sealed star feeder, including a star feeder body 11, the star feeder body 11 has a shell 112 and a feed slurry 111 arranged in the shell 112 and rotatable, the feed slurry 111 has a plurality of blades 1111, the feed port of the star feeder body 11 faces upward, and the discharge port of the star feeder body 11 faces downward; it is characterized in that a flexible plate 12 is arranged at the edge of each blade 1111, and the edge of the flexible plate 12 protrudes outside the blade 1111 and is connected to the shell 112 The shell 112 is fitted with the cavity wall, and the multiple paddles 1111 and the multiple flexible plates 12 jointly divide the shell 112 into a plurality of mutually separated cavities along the circumferential direction. A flexible plate is added to the paddle, and the edge of the flexible plate protrudes outside the paddle, and the edge of the flexible plate is against the inner wall of the shell. In essence, the flexible plate is used to increase the area of the paddle and softly rub against the inner wall of the shell, while the multiple paddles, together with the flexible plates thereon, separate the distribution inside the shell. In this way, even when the feed slurry is rotating, the feed slurry can separate the feed port and the discharge port of the star feeder to avoid smoke return.
[0033] The flexible plate 12 described in the above technical solution is a rubber material (similar to the rubber skin on a vehicle tire, which has a certain thickness and thus has a certain rigidity, and can maintain an unfolded state to contact the inner wall of the shell), which has good flexibility and good wear resistance.
[0034] like Figure 1-Figure 3 As shown, the feed slurry 111 in the above technical solution also has a central axis 1112, and a plurality of the blades 1111 are axially arranged on the central axis 1112 and distributed at intervals along the circumferential direction, and each of the blades 1111 is distributed radially along the central axis 1112, so that the gap from the edge of each blade to the inner wall of the shell is consistent.
[0035] like Figure 3 As shown, the blade 1111 in the above technical solution is a square plate, and the side of the flexible plate 12 away from the central axis 1112 and the two ends of the flexible plate 12 close to the blade 1111 both protrude outside the blade 1111, so that the partition effect of the flexible plate is good.
[0036] like Figure 1 and Figure 2 As shown, the inner cavity of the shell 112 in the above technical solution is a cylindrical and horizontally distributed cavity, the feeding slurry 111 is coaxially distributed and rotatably connected in the shell 112, and the feed port and the discharge port of the star-shaped feeder body 11 are respectively arranged at the upper and lower ends of the shell 112, which has a simple structure, and is convenient for feeding and discharging, and will not cause material stagnation.
[0037] The improvement of this embodiment compared with the prior art is that a flexible plate is added to the paddle, and the area of the flexible plate is larger than the area of the paddle, so that except for one side close to the central axis, the other three sides of the flexible plate protrude outside the paddle and fit with the inner wall of the shell, so that the feed port and the discharge port of the sealed star feeder can always be kept in a separated state during feeding.
[0038] in, Figure 1 and Figure 2 A represents the feed port of the star feeder body, and B represents the discharge port of the star feeder body.
[0039] In this embodiment, the flexible plate may be riveted to the blade by rivets.
[0040] In this embodiment, any end of the central axis passes through the outside of the shell and is used for transmission connection with the motor 113, so that the motor 113 can drive the feed slurry to rotate to transport the material.
[0041] Example 2
[0042] like Figure 4 As shown, the present embodiment provides a furnace feeding system, comprising a furnace body 2, a screw feeder 3 and the enclosed star feeder 1 as described in Example 1, the side wall of the furnace body 2 has a feed port, the discharge port of the screw feeder 3 is connected and communicated with the feed port of the furnace body 2, the feed port of the screw feeder 3 faces upward, the enclosed star feeder 1 is arranged above the screw feeder 3, the feed port of the screw feeder 3 is communicated with the discharge port of the enclosed star feeder 1, the structure is simple, and the feeding is convenient, so that the enclosed star feeder can first feed vertically, and then the screw feeder can feed horizontally so that the fuel can smoothly overcome the positive pressure at the furnace body feed port and enter the furnace body.
[0043] The above technical solution also includes a feeder 4, the lower end of which has a discharge port, and the discharge port of the feeder 4 is connected to the feed port of the star feeder body 11, and the feeder 4 is used to store fuel, so that the fuel can be stored in the feeder in advance, and the feeder can be used to stably feed the fuel. Preferably, the feeder 4 is a storage bin or a hopper, which has a simple structure and can stably supply fuel to the furnace body.
[0044] In the above technical solution, a vibrating member 5 is provided at the connection between the feed port of the star feeder body 11 and the feed member 4, so that the feed port of the star feeder body can be prevented from being blocked and causing poor feeding. In this embodiment, the vibrating member can be a vibration pump, which generates vibration at the connection between the feed port of the star feeder body and the feed member or hopper, so that the feed member or hopper can be discharged smoothly, and the feed port of the new feeder body will not be blocked.
[0045] The spiral feeding part of the spiral feeder 3 in the above technical solution is a shaftless spiral blade, which has a large conveying capacity and will not cause material blockage.
[0046] The fuel prepared in the above-mentioned embodiments is RDF paper residue.
[0047] Since the feed port of the furnace body is mostly open on the side, a screw feeder is used in this embodiment for side feeding (it is not affected by the positive pressure at the feed port of the furnace body during feeding and can feed smoothly and normally), while the sealed star feeder feeds the screw feeder vertically (and the sealed star feeder can avoid smoke return).
[0048] The furnace feeding system provided in this embodiment can stably transport RDF paper slag into the furnace body. For example, before the improvement, 30 tons of slag can be transported per day, and after the improvement, 120 tons of slag can be transported per day without worrying about the problem of smoke return.
[0049] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.
Claims
1. A sealed star feeder, comprising a star feeder body (11), the star feeder body (11) having a shell (112) and a feed slurry (111) rotatably arranged in the shell (112), the feed slurry (111) having a plurality of blades (1111), a feed inlet of the star feeder body (11) facing upward, and a discharge outlet of the star feeder body (11) facing downward; characterized in that: A flexible plate (12) is provided at the edge of each of the paddles (1111), and the edge of the flexible plate (12) protrudes outside the paddle (1111) and fits against the cavity wall of the shell (112); the plurality of paddles (1111) and the plurality of flexible plates (12) together divide the shell (112) into a plurality of mutually separated cavity areas along the annular direction.
2. The sealed star feeder according to claim 1, characterized in that: The flexible plate (12) is a rubber material piece.
3. The sealed star feeder according to claim 1, characterized in that: The feed slurry (111) also has a central axis (1112), and a plurality of blades (1111) are axially arranged on the central axis (1112) and distributed at intervals in the circumferential direction, and each blade (1111) is distributed radially along the central axis (1112).
4. The sealed star feeder according to claim 3, characterized in that: The paddle (1111) is a square plate, and a side of the flexible plate (12) away from the central axis (1112) and two ends of the flexible plate (12) close to the paddle (1111) both protrude outside the paddle (1111).
5. The sealed star feeder according to any one of claims 1 to 4, characterized in that: The inner cavity of the shell (112) is a cylindrical and horizontally distributed cavity, the feed slurry (111) is coaxially distributed and rotatably connected in the shell (112), and the feed port and the discharge port of the star-shaped feeder body (11) are respectively arranged at the upper and lower ends of the shell (112).
6. A furnace feeding system, characterized in that: It comprises a furnace body (2), a screw feeder (3) and the enclosed star feeder (1) as described in any one of claims 1 to 5, the side wall of the furnace body (2) has a feed port, the discharge port of the screw feeder (3) is connected to and communicated with the feed port of the furnace body (2), the feed port of the screw feeder (3) faces upward, the enclosed star feeder (1) is arranged above the screw feeder (3), and the feed port of the screw feeder (3) is communicated with the discharge port of the enclosed star feeder (1).
7. The furnace feeding system according to claim 6, characterized in that: It also includes a feeding piece (4), the lower end of which is provided with a discharge port, and the discharge port of the feeding piece (4) is connected to the feed port of the star-shaped feeder body (11), and the feeding piece (4) is used to store fuel.
8. The furnace feeding system according to claim 6, characterized in that: The material supply member (4) is a material storage bin or a material hopper.
9. The furnace feeding system according to claim 7 or 8, characterized in that: A vibrating member (5) is provided at the connection point between the feed inlet of the star-shaped feeder body (11) and the feeding member (4).
10. The furnace feeding system according to claim 6, characterized in that: The spiral feeding part of the spiral feeder (3) is a shaftless spiral blade.