Sealed blade for air conveying system, material feeder and air conveying system

Abstract

The utility model discloses a sealed blade for an air conveying system, a material feeder and the air conveying system, and belongs to the field of bulk material air conveying equipment. According to the sealing type blade, the grooves are formed in the top and the two sides of the sealing type blade and used for installing the sealing assembly; the sealing assembly comprises a wear-resistant material and a spring, the spring is installed at the bottom of the blade groove, and the wear-resistant material is located on the surface of the spring. The sealed blade can effectively prevent the blade from leaking air, and can reduce the abrasion of the blade; even if the blades are abraded to a certain degree, the blades can still be well attached to the shell through the design of the elastic assemblies, and air leakage is avoided. After the sealing assembly is abraded, only the blades need to be detached, the sealing assembly is replaced, and the blades do not need to be replaced. Therefore, the conveying efficiency of the air conveying system is greatly improved, and the cost can be saved.

Description

Technical Field

[0001] The utility model relates to a sealed blade for a pneumatic conveying system, a material feeding machine and a pneumatic conveying system, belonging to the field of bulk material pneumatic conveying equipment. Background Art

[0002] Pneumatic conveying system is a system that uses wind power to transport materials. This system uses the power of wind to transport materials from one place to another. It is usually used in steel mills, docks, grain depots, mines, construction sites, grain processing plants and other places where large-scale material transportation of particles or powders below 2 mm is required.

[0003] The working principle of the pneumatic conveying system is to use the power of wind to blow, suck or suspend the material in a sealed pipe to achieve the conveying of materials. The materials can be granular, powdery and liquid, such as grain, coal gangue, flour, water, oil, etc. Pneumatic conveying systems have the advantages of high efficiency, low maintenance cost, environmental protection and flexibility. They can adapt to different conveying distances and material types.

[0004] However, the currently used wind conveying system has poor sealing effect between the blades and the shell of the feeder, and the blades and the shell are severely worn during use, resulting in an increase in the gap between the blades and the shell, further reducing the sealing between the blades and the shell, thereby affecting the utilization rate of the wind, and further resulting in low efficiency in material conveying. Summary of the invention

[0005] In order to solve one or more of the above problems, the utility model provides a sealed blade for a pneumatic conveying system, a material feeder and a pneumatic conveying system, and the technical solution is as follows:

[0006] A sealing blade for an air delivery system, wherein grooves are provided on the top and both sides of the blade for installing an elastic sealing component; the elastic sealing component comprises a pop-up member and an elastic member, wherein the elastic member is installed at the bottom of the groove of the blade; the pop-up member is connected to the elastic member, and the contact surface between adjacent pop-up members is arranged in a stepped manner; the pop-up member expands and contracts under the elastic force of the elastic member so that the blade achieves a sealing effect.

[0007] In one embodiment, the groove is a rectangular groove or a U-shaped groove.

[0008] In one embodiment, the elastic member includes a metal spring, a hydraulic spring and a gas spring.

[0009] In one embodiment, when the elastic member is a metal spring, the elastic sealing assembly further includes a supporting guide rod for supporting and guiding the elastic member.

[0010] In one embodiment, the ejection member is made of wear-resistant material.

[0011] A material feeder comprises a casing, a rotating shaft, an impeller and a driving motor. The rotating shaft is supported and mounted on the casing through bearings and a sealing assembly. The impeller comprises a hub and the above-mentioned blades. The impeller is mounted on the rotating shaft and is located inside the casing. A transmission wheel is fixedly mounted at one end of the rotating shaft and is located outside the casing.

[0012] In one embodiment, the shell includes a cover shell, a first side plate, and a second side plate, and the two side plates are installed on both sides of the cover shell; the shell is provided with a feed port, an air inlet, and a feed port.

[0013] In one embodiment, the first side panel and the second side panel are detachable components.

[0014] In one embodiment, the transmission wheel on the rotating shaft is driven by a driving wheel of a driving motor, and the transmission wheel and the driving wheel are chain-driven or gear-driven.

[0015] A pneumatic conveying system comprises a feeding device, a fan and the above-mentioned material feeder; the feeding device is connected to the feeding port of the material feeder, the feeding device is used to feed the material into the material feeder, and the fan is connected to the air inlet of the material feeder to provide wind force.

[0016] In one embodiment, the pneumatic conveying system further includes a material conveying pipeline, one end of which is connected to a material feeding port of the material feeding machine, and the other end of which is connected to a material conveying destination.

[0017] The beneficial effects of the utility model are:

[0018] The sealed blade provided by the utility model can make the blade closely contact with the shell through the elastic sealing component, effectively prevent the blade from leaking air, and reduce the wear of the blade; even if the blade is worn to a certain extent, the design of the elastic sealing component can still make the blade fit well with the shell, so it can greatly improve the utilization rate of wind, and then improve the conveying efficiency of the air delivery system. After the elastic sealing component is worn, it is only necessary to disassemble the blade and replace the sealing component without replacing the blade, so it can also save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a structural schematic diagram of the sealing blade of the utility model;

[0021] Figure 2 It is a cross-sectional view of the sealing blade of the utility model; wherein, 100. impeller, 110. blade, 111. top groove, 112. side groove, 113. ejection member, 114. elastic member, 115. support guide rod, 120. hub.

[0022] Figure 3 It is a structural schematic diagram of the material feeding machine of the utility model; wherein, 200. shell, 210. feed port, 220. first side plate, 221. air outlet, 230. second side plate, 231. feed port, 240. shell cover. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Embodiment 1:

[0025] This embodiment provides a sealed blade for an air delivery system, which is usually installed in a housing.

[0026] A sealed blade for an air conveying system, such as Figure 1 and Figure 2 As shown, the blade 110 is provided with a top groove 111 and a side groove 112 for installing an elastic sealing component; the elastic sealing component includes a pop-up member 113 and an elastic member 114, the pop-up member 113 is connected to the elastic member 114, wherein the elastic member 114 is installed at the bottom of the top groove 111 and the side groove 112 of the blade 110, and the pop-up member 113 can be retracted and retracted under the elastic force of the elastic member 114 so that the blade 110 fits tightly with the external shell, thereby achieving a sealing effect.

[0027] The top groove 111 and the side groove 112 may be rectangular grooves or U-shaped grooves.

[0028] The elastic member 114 can be a metal spring, a hydraulic spring or a gas spring; when the elastic member 114 is a metal spring, the pop-up member 113 and the elastic member 114 can be connected by welding. In order to provide certain support and guidance for the spring, a support guide rod 115 can also be provided at the bottom of the groove to prevent the metal spring from falling off due to displacement outside the telescopic direction, thereby causing air leakage; when the elastic member 114 is a hydraulic spring or a gas spring, the connecting surface between the pop-up member 113 and the hydraulic spring also serves as a sealing groove, so that the liquid and gas are sealed in the groove.

[0029] When the elastic member 114 is a metal spring, a plurality of springs may be provided according to the size of the ejection member, and connected to different positions of the ejection member respectively, so that the ejection member is subjected to uniform force. To prevent the spring from being displaced in a direction other than the telescopic direction, a support guide rod 115 may be provided for each spring to ensure that the spring is not displaced in a direction other than the telescopic direction as much as possible.

[0030] The support guide rod 115 can be set to a suitable length by a technician according to the actual application scenario.

[0031] The ejection member 113 is made of wear-resistant material. When the edge of the ejection member 113 is damaged due to friction with the housing, the ejection member 113 is extended under the elastic force of the elastic member 114 and can still fit tightly with the external housing to achieve sealing.

[0032] In order to achieve a better sealing effect and also to prevent adjacent pop-up members 113 from falling off due to interaction, the contact surface between the pop-up member 113 corresponding to the top of the blade and the pop-up member 113 corresponding to the side of the blade of the present application is stepped, such as Figure 2 shown.

[0033] Working principle of this utility model:

[0034] The sealing blades provided in the present application are installed on a rotating shaft and are usually installed in a shell when in use. The blades rotate driven by the rotating shaft. During the rotation, in order to achieve a sealing effect, the edge of the blade contacts the inner surface of the shell. Long-term rotational contact will cause wear and loss of the blade edge, resulting in failure to achieve sealing. The present application always applies an outward elastic force to the pop-up member 113 at the edge part through an elastic member, so that the edge of the blade is always tightly fitted with the external shell to achieve sealing; considering that adjacent pop-up members 113 on the blade may fall off due to interaction during use, the contact surface between the pop-up member 113 corresponding to the top of the blade and the pop-up member 113 corresponding to the side of the present application adopts a stepped contact surface, and a design similar to the stepped contact surface in the construction industry is adopted to reduce the probability of falling off.

[0035] Embodiment 2:

[0036] This embodiment provides a material feeding machine, such as Figure 3 As shown, it includes a housing 200, a rotating shaft (because most of the rotating shaft is located inside the housing 200, Figure 3 ), the impeller 100 and the driving motor (the driving motor is only used to drive the transmission wheel on the rotating shaft to rotate through the driving wheel, thereby driving the impeller 100 to rotate through the rotating shaft, so Figure 3The rotating shaft is mounted on the housing 200 through a bearing and a sealing assembly. The impeller 100 includes a hub 120 and blades 110 (in actual applications, the impeller 100 can be provided with 6, 8, 10 or 12 blades according to actual application requirements). The impeller 100 is mounted on the rotating shaft through a pin connection and is located inside the housing 200. A transmission wheel is fixedly mounted on one end of the rotating shaft located outside the housing 200. The transmission wheel is driven by the driving wheel of the driving motor. The transmission wheel and the driving wheel are chain driven or gear driven.

[0037] like Figure 3 As shown, the housing 200 includes a cover shell 240, a first side plate 220, and a second side plate 230, and the two side plates are fixedly mounted on both sides of the cover shell 240 in a movable and detachable manner; the cover shell 240 is provided with a feed port 210, an air inlet 221, and a feed port 231, and the specific locations of the three can be set according to actual scene requirements. For example, the feed port 210 can be opened at the top or side of the cover shell 240, and the air inlet 221 and the feed port 231 can be opened at the lower part or other parts of the first side plate 220 and the second side plate 230 (due to the angle of the figure, the feed port 231 is at Figure 3 The air inlet 221 is opened on the first side plate 220 , and the feed port 231 is opened on the second side plate 230 .

[0038] Among them, the blade 110 is provided with a rectangular or U-shaped top groove 111 and a side groove 112 for installing an elastic sealing component; the elastic sealing component includes a pop-up member 113 and an elastic member 114, wherein the elastic member 114 is installed at the bottom of the top groove 111 and the side groove 112 of the blade, and the pop-up member 113 is connected to the elastic member 114. The pop-up member 113 can be extended and retracted under the elastic force of the elastic member 114 so that the blade 110 fits tightly with the external shell, thereby achieving a sealing effect.

[0039] Embodiment three:

[0040] This embodiment provides a wind conveying system.

[0041] The pneumatic conveying system includes a feeding device, a fan, and a material feeder provided in Example 2. The feeding device is connected to the feed port 210 of the material feeder, and is used to evenly feed the material into the feed port 210 of the material feeder. The air inlet 221 of the material feeder can be connected to the fan through an air inlet pipe, and the feed port 231 of the material feeder is connected to the material transmission pipeline. When the pneumatic conveying system is working, the material enters the material feeder from the feeding device, the fan provides wind force, and the air enters from the air inlet 221. Inside the material feeder, the material enters the material transmission pipeline through the feed port under the action of the wind force, and the material is transported to the destination through the material transmission pipeline.

[0042] The material feeder includes a housing 200, a rotating shaft, an impeller 100 and a driving motor. The rotating shaft is supported and mounted on the housing 200 through bearings and sealing components. The impeller 100 includes a hub 120 and blades 110. The impeller 100 can be mounted on the rotating shaft through a pin connection. A transmission wheel is fixedly mounted on one end of the rotating shaft outside the housing 200. The transmission wheel is driven by the driving wheel of the driving motor. The transmission wheel and the driving wheel are chain-driven.

[0043] like Figure 3 As shown, the shell 200 includes a cover shell 240, a first side panel 220, and a second side panel 230. The two side panels are fixedly mounted on both sides of the cover shell in a movable and detachable manner; a feed port 210 is provided at the top of the cover shell 240 (not limited to the top, the side is also acceptable), and an air inlet 221 and a feed port 231 are respectively provided at the lower parts of the first side panel 220 and the second side panel 230 (not limited to the position shown in the figure, other parts are also acceptable), the air inlet 221 is provided on the first side panel 220, and the feed port 231 is provided on the second side panel 230.

[0044] Since the blade 110 is provided with an elastic sealing component, its edge fits tightly with the shell, thus achieving a better sealing effect and preventing air leakage to the greatest extent, thereby making the utilization rate of wind power close to 100%, greatly improving the efficiency of material conveying.

[0045] Embodiment 4:

[0046] This embodiment provides a water turbine, the blades of which adopt the sealed blades provided in the first embodiment, so as to achieve sealing between the blades and the water turbine housing. The water turbine can be used in a hydropower station. When water in a reservoir is led to the water turbine through a water diversion pipe, the water turbine runner rotates, driving the generator impeller to generate electricity. The blades of the runner in the water turbine adopt the sealed blades provided in the first embodiment.

[0047] Embodiment five:

[0048] This embodiment provides a propeller for providing forward assistance to a water vehicle. The propeller is provided with the sealed blades provided in the first embodiment, so as to achieve sealing between the blades and the propeller housing, thereby generating an impulse to push the object forward or backward.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealed blade for an air conveying system, characterized in that: The top and both sides of the blade are provided with grooves for installing an elastic sealing component; the elastic sealing component includes a pop-up member and an elastic member, wherein the elastic member is installed at the bottom of the groove of the blade; the pop-up member is connected to the elastic member; the contact surface between adjacent pop-up members is arranged to be stepped; the pop-up member is extended and retracted under the elastic force of the elastic member so that the blade achieves a sealing effect.

2. The sealed blade according to claim 1, characterized in that: The elastic member includes a metal spring, a hydraulic spring and a gas spring; the ejection member is made of wear-resistant material.

3. The sealed blade according to claim 2, characterized in that: When the elastic member includes a metal spring, the elastic sealing assembly further includes a supporting guide rod.

4. The sealed blade according to claim 1, characterized in that: The groove is a rectangular groove or a U-shaped groove.

5. A material feeding machine, characterized in that: It includes a shell, a rotating shaft, an impeller and a driving motor. The rotating shaft is supported and mounted on the shell through bearings and sealing components. The impeller includes a hub and blades as described in any one of claims 1 to 4. The impeller is mounted on the rotating shaft and is located inside the shell. A transmission wheel is fixedly mounted at one end of the rotating shaft and is located outside the shell.

6. The material feeding machine according to claim 5, characterized in that: The shell comprises a cover shell, a first side plate and a second side plate, and the two side plates are installed on both sides of the cover shell; the shell is provided with a feed port, an air inlet and a feeding port.

7. The material feeding machine according to claim 5 or 6, characterized in that: The transmission wheel on the rotating shaft is driven by the driving wheel of the driving motor, and the transmission wheel and the driving wheel are chain-driven or gear-driven.

8. A wind conveying system, characterized in that: It comprises a feeding device, a fan and the material feeder as described in any one of claims 5-7; the feeding device is connected to the feeding port of the material feeder, the feeding device is used to feed the material into the material feeder, and the fan is connected to the air inlet of the material feeder to provide wind force.

9. The wind conveying system according to claim 8, characterized in that: The pneumatic conveying system also includes a material conveying pipeline, one end of which is connected to the feeding port of the material feeding machine, and the other end of which is connected to the material conveying destination.

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