Quantitative feeding device suitable for high-temperature powder

Abstract

The utility model discloses a quantitative feeding device suitable for high-temperature powder, and belongs to the technical field of powder feeding. The rotating device comprises a shell and a rotating main body, a material inlet and a material outlet are formed in the shell; the rotating main body is rotationally arranged in the shell and comprises a sleeve and a transmission shaft for driving the sleeve to rotate; wherein the two ends of the shell are arranged at the corresponding ends of the sleeve in a sleeving mode respectively, and a sealed material channel is defined by the inner wall of the shell and the bearing grooves in the peripheral wall of the sleeve; a heat exchange channel is formed in an inner cavity of the sleeve, and the heat exchange channel is provided with a fan. Air can forcibly flow in the inner cavity of the heat exchange channel for heat exchange, the heat dissipation effect of the rotating body is accelerated, and the phenomenon that the rotating body deforms due to high temperature and is stuck is effectively prevented.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder feeding, and more specifically relates to a quantitative feeding device suitable for high-temperature powder. Background Art

[0002] Powder feeding generally uses a rotary valve, which realizes quantitative feeding function through the rotation of the valve body, and can also realize the air locking function. However, since the bearings of ordinary rotary valve structures cannot withstand high temperatures, and in order to realize the air locking function, the gap between the rotating parts and the valve body is extremely small; therefore, when conveying high-temperature materials, high temperatures will accelerate the degree of damage to the bearings; at the same time, it will cause the rotating parts to deform, which is prone to jamming. Therefore, designing a high-temperature resistant powder feeding device is a problem that technicians in this field urgently need to solve.

[0003] After searching, the application with Chinese patent publication number CN 215325450 U discloses a vertical rotary valve that can feed materials at a constant speed. The application includes a valve assembly, a feeding mechanism and a pin mechanism; the feeding mechanism is installed at the external front end of the valve assembly; the pin mechanism is fixed on both sides of the exterior of the valve assembly; the cleaning mechanism is arranged on the inner wall of the valve assembly; the micro-electric cylinder; the embedded nozzle is installed on the outside of the micro-electric cylinder; the water pipe is fixed on the outside of the embedded nozzle. The vertical rotary valve of the application can automatically clean and quickly clean up residues. The embedded nozzle is embedded in the inner wall of the valve body, and the material will not clog the embedded nozzle.

[0004] For another example, the application with Chinese patent publication number CN 215710085 U discloses a quantitative feeding system. The application includes a batching hopper, the bottom end of which is fixedly connected to a manual gate valve, the bottom end of which is fixedly connected to a connecting pipe, the outer surface of which is fixedly connected to a detection tube with a detection hole, the bottom end of which is fixedly connected to a rotary valve, the bottom end of which is fixedly connected to a small silo, and the bottom end of which is fixedly connected to a quantitative feeding unit. The application adopts a lower discharging structure with a simplified structure, with a discharging port facing downward, and fan interfaces on both sides of the discharging chamber. The connecting pipe can be placed on the left or right side as needed, and the ash falls by its own weight and is pre-fed by the lower conveying section through the feeding screw, and then blown away by the airflow blown by the fan, so that the discharging is convenient.

[0005] The above applications all involve technical improvements in quantitative feeding, but the problems of high temperature accelerating the damage to bearings when conveying high-temperature powder and high temperature causing deformation of rotating parts, which can easily lead to jamming, have all been effectively solved. Utility Model Content

[0006] 1. Problems to be solved

[0007] In view of at least some of the problems existing in the above prior art, the present invention proposes a quantitative feeding device suitable for high-temperature powders, which aims to solve the problem that when the existing quantitative feeding device conveys high-temperature materials, high temperature may cause the rotating parts to deform, thereby easily causing jamming.

[0008] 2. Technical solution

[0009] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0010] The utility model is a device for quantitatively feeding high-temperature powder, comprising:

[0011] A shell, wherein the shell is provided with a material inlet and a material outlet;

[0012] A rotating body, which is rotatably disposed in the housing and includes a sleeve and a transmission shaft driving the sleeve to rotate;

[0013] Wherein, the two ends of the shell are respectively sleeved on the corresponding ends of the sleeve, and the inner wall of the shell and the receiving groove on the outer peripheral wall of the sleeve form a sealed material channel;

[0014] The inner cavity of the sleeve forms a heat exchange channel, and the heat exchange channel is equipped with a fan.

[0015] Furthermore, both ends of the sleeve are provided with connecting pieces, the part of the transmission shaft located in the inner cavity of the sleeve is connected to the inner wall of the sleeve through a rib plate, and the two ends extending out of the sleeve are rotatably connected to the corresponding connecting pieces respectively.

[0016] Furthermore, the connecting member includes a flange, a bearing seat and a bracket for connecting the flange and the bearing seat;

[0017] Wherein, the flange is sleeved on the end of the sleeve, and the bearing seat is connected to the transmission shaft through the bearing.

[0018] Furthermore, the flange is provided with a gas source connector.

[0019] Furthermore, one end of the transmission shaft is connected to a transmission sprocket.

[0020] Furthermore, the fan is arranged on a bearing seat far away from the transmission sprocket.

[0021] Furthermore, a partition plate is arranged on the outer peripheral wall of the sleeve, and a plurality of blades are arranged between two adjacent partition plates along the axial direction of the sleeve; the receiving groove is formed between two adjacent blades and the partition plates on both sides.

[0022] Furthermore, the partition plates are provided in three pieces and divide the outer peripheral wall of the sleeve into two areas, and the blades in the two areas are arranged in mirror symmetry; and the connection point of a pair of blades arranged in mirror symmetry with the middle partition plate is lower than the connection point with the partition plates on both sides.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] (1) The utility model is a device for quantitative feeding of high-temperature powders, wherein the sleeve is arranged in a shell, and a receiving groove is arranged on the outer peripheral wall of the sleeve, and a sealed material channel is formed between the receiving groove and the inner wall of the shell. The receiving groove is driven by a transmission shaft to rotate to realize the quantitative feeding operation of the material; at the same time, the transmission shaft is located in the sleeve, and a fan is provided at one end of the sleeve; through the setting of the fan, air is forced to flow in the inner cavity of the sleeve for heat exchange, thereby reducing the temperature of the rotating body, and effectively preventing the rotating body from being deformed due to high temperature and causing jamming.

[0026] (2) The utility model is suitable for a high-temperature powder quantitative feeding device, in which the flange of the connecting piece is arranged at the end of the sleeve, and the bearing seat is arranged away from the sleeve through a bracket, so that the bearing in the bearing seat can be placed outside and away from the high-temperature area to ensure the service life of the bearing.

[0027] (3) The utility model is suitable for a high-temperature powder quantitative feeding device. The flange is provided with an air source connector. Compressed air or nitrogen is introduced through the air source connector to form a positive pressure space at the connection between the sleeve and the flange, thereby forming an air seal at the connection, which can effectively reduce the risk of material leakage.

[0028] (4) The utility model is suitable for a high-temperature powder quantitative feeding device, in which the outer peripheral wall of the sleeve is divided into two areas by a partition plate, and the blades in the two areas are arranged in a mirror-symmetrical manner; and the connection point of a pair of mirror-symmetrical blades with the middle partition plate is lower than the connection point with the partition plates on both sides, so that the material flows at the middle partition plate during the rotation process, thereby further reducing the risk of material leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic structural diagram of a device for quantitatively feeding high-temperature powders according to the utility model;

[0030] Figure 2 This is a cross-sectional view of a quantitative feeding device for high-temperature powders according to the utility model;

[0031] Figure 3 It is a structural schematic diagram of the rotating body in the utility model;

[0032] Figure 4 It is a structural schematic diagram of the connecting piece in the utility model.

[0033] In the figure: 1, shell; 11, material inlet; 12, material outlet;

[0034] 2. Rotating body; 21. Sleeve; 22. Transmission shaft; 23. Rib plate; 24. Separation plate; 25. Blade; 26. Receiving groove;

[0035] 3. Connecting parts; 31. Flange; 32. Bearing seat; 33. Bracket; 34. Air source connector;

[0036] 4. Fan; 5. Sprocket. DETAILED DESCRIPTION

[0037] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0038] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] The utility model is further described below in conjunction with specific embodiments.

[0040] Example 1

[0041] like Figure 1 , Figure 2 As shown, a device for quantitatively feeding high-temperature powders according to this embodiment includes a shell 1 and a rotating body 2.

[0042] The top of the housing 1 is provided with a material inlet 11 , and the bottom thereof is provided with a material outlet 12 .

[0043] The rotating body 2 is rotatably disposed in the housing 1 and includes a sleeve 21 and a transmission shaft 22 that drives the sleeve 21 to rotate.

[0044] The two ends of the housing 1 are respectively sleeved on the corresponding ends of the sleeve 21. A receiving groove 26 is provided on the outer peripheral wall of the sleeve 21, and the receiving groove 26 and the inner wall of the housing 1 form a sealed material channel.

[0045] The inner cavity of the sleeve 21 forms a heat exchange channel, and the heat exchange channel is equipped with a fan 4.

[0046] The present embodiment is a device for quantitatively feeding high-temperature powders. When working, materials are added into the receiving groove 26 through the material inlet 11; at the same time, the sleeve 21 and the receiving groove 26 thereon are driven to rotate through the transmission shaft 22. When the receiving groove 26 carrying the material rotates to the material outlet 12, the material flows out through the material outlet 12, thereby realizing the quantitative feeding operation of the material.

[0047] When conveying high-temperature materials, the fan 4 is turned on to force air to flow in the inner cavity of the sleeve 21 for heat exchange, thereby reducing the temperature of the sleeve 21 and effectively preventing the sleeve 21 from being deformed due to high temperature and causing it to get stuck.

[0048] Example 2

[0049] In order to prevent the high temperature from interfering with the bearing and thus affecting the normal use of the entire device, in this embodiment, the bearing is placed outside to reduce the impact of the high temperature on the bearing.

[0050] refer to Figure 2 , Figure 4 As shown, both ends of the sleeve 21 are provided with connectors 3. The portion of the transmission shaft 22 located in the inner cavity of the sleeve 21 is connected to the inner wall of the sleeve 21 through a rib plate 23, and the two ends extending out of the sleeve 21 are rotatably connected to the corresponding connectors 3 respectively.

[0051] Specifically, the connecting member 3 includes a flange 31, a bearing seat 32 and a bracket 33. The flange 31 is sleeved on the end of the sleeve 21, and a packing seal is used at the contact point between the two.

[0052] One end of the bracket 33 is connected to the outer wall of the flange 31 , and the other end is connected to the bearing seat 32 .

[0053] Preferably, the brackets 33 are provided in a plurality. Specifically in this embodiment, three brackets 33 are provided and are distributed at equal intervals.

[0054] The bearing seat 32 is provided with a bearing, one end of the transmission shaft 22 is located in the inner ring of the bearing on one side, and the other end passes through the inner ring of the bearing on the other side and is connected to a transmission sprocket 5, which is used to connect to a driving source.

[0055] The fan 4 is arranged on the outer side of the bearing seat 32 away from the driving sprocket 5 .

[0056] The present embodiment is a device for quantitatively feeding high-temperature powders. By setting the connecting piece 3, the bearing on the transmission shaft 22 is located outside the rotating body 2 and away from the sleeve 21, thereby effectively preventing the influence of high temperature on the bearing and allowing the bearing to work at normal temperature.

[0057] In addition, the flange 31 is provided with an air source connector 34. By introducing compressed air or nitrogen into the air source connector 34, a positive pressure space can be formed at the connection between the sleeve 21 and the flange 31, thereby forming an air seal at the connection, which can effectively reduce the risk of material leakage.

[0058] Example 3

[0059] In order to further reduce the risk of material leakage, the structure of the receiving groove 26 is further optimized in this embodiment.

[0060] refer to Figure 3 As shown, this embodiment is a device suitable for high-temperature powder quantitative feeding, wherein a partition plate 24 is provided on the outer peripheral wall of the sleeve 21, and a plurality of blades 25 are provided along the axial direction of the sleeve 21 between two adjacent partition plates 24; the receiving groove 26 is formed between two adjacent blades 25 and the partition plates 24 on both sides.

[0061] Preferably, the blades 25 are centripetal spiral blades.

[0062] Furthermore, the partition plates 24 are provided with three pieces and divide the outer peripheral wall of the sleeve 21 into two areas, and the blades 25 in the two areas are arranged in mirror symmetry; and the connection point of a pair of mirror-arranged blades 25 with the middle partition plate 24 is lower than the connection point with the partition plates 24 on both sides.

[0063] That is, the receiving groove 26 surrounded by the partition plate 24 and the blades 25 is V-shaped as a whole.

[0064] The present embodiment is a device for quantitatively feeding high-temperature powders. By designing the receiving groove 26 as a V-shaped structure, the material falls from the material inlet 11 into the receiving groove 26. Then, during the process of the receiving groove 26 driving the material to rotate, the material will flow along the side wall of the blade 25 to the lower part of the receiving groove 26, so that the material gathers at the center of the material channel, thereby further reducing the risk of material leakage.

[0065] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A quantitative feeding device for high temperature powder, characterized in that: include, A housing (1), wherein the housing (1) is provided with a material inlet (11) and a material outlet (12); A rotating body (2), the rotating body (2) being rotatably disposed in the housing (1), and comprising a sleeve (21) and a transmission shaft (22) for driving the sleeve (21) to rotate; The two ends of the shell (1) are respectively sleeved on the corresponding ends of the sleeve (21), and the inner wall of the shell (1) and the receiving groove (26) on the outer peripheral wall of the sleeve (21) form a sealed material channel; The inner cavity of the sleeve (21) forms a heat exchange channel, and the heat exchange channel is equipped with a fan (4).

2. The device for quantitatively feeding high-temperature powder according to claim 1, characterized in that: Connecting pieces (3) are provided at both ends of the sleeve (21); the portion of the transmission shaft (22) located in the inner cavity of the sleeve (21) is connected to the inner wall of the sleeve (21) via a rib plate (23); and the two ends extending out of the sleeve (21) are rotatably connected to the corresponding connecting pieces (3) respectively.

3. The device for quantitatively feeding high-temperature powder according to claim 2, characterized in that: The connecting member (3) comprises a flange (31), a bearing seat (32) and a bracket (33) for connecting the flange (31) and the bearing seat (32); The flange (31) is sleeved on the end of the sleeve (21), and the bearing seat (32) is connected to the transmission shaft (22) via a bearing.

4. The device for quantitatively feeding high-temperature powder according to claim 3, characterized in that: The flange (31) is provided with a gas source connector (34).

5. The device for quantitatively feeding high-temperature powder according to claim 4, characterized in that: One end of the transmission shaft (22) is connected to a transmission sprocket (5).

6. The device for quantitatively feeding high-temperature powder according to claim 5, characterized in that: The fan (4) is arranged on a bearing seat (32) far away from the transmission sprocket (5).

7. A device for quantitative feeding of high temperature powder according to any one of claims 1 to 6, characterized in that: A partition plate (24) is provided on the outer peripheral wall of the sleeve (21), and a plurality of blades (25) are provided between two adjacent partition plates (24) along the axial direction of the sleeve (21); the receiving groove (26) is formed between two adjacent blades (25) and the partition plates (24) on both sides.

8. The device for quantitatively feeding high-temperature powder according to claim 7, characterized in that: The partition plates (24) are provided in three pieces and divide the outer peripheral wall of the sleeve (21) into two areas. The blades (25) in the two areas are arranged in a mirror-symmetrical manner; and the connection point of a pair of blades (25) arranged in a mirror-symmetrical manner with the middle partition plate (24) is lower than the connection point with the two side partition plates (24).

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