Oxygen-isolating star-shaped discharge valve

Abstract

The oxygen isolation star-shaped discharge valve comprises an outer shell and an impeller contained in the outer shell, the impeller is provided with a main shaft and a plurality of blades, the blades extend out of the main shaft in the radial direction and can rotate around the main shaft, and a material receiving hopper is formed between every two adjacent blades. The distance between the tail ends of every two adjacent blades is equal to the width of an opening of the material receiving hopper, the outer shell is provided with a feeding port and a discharging port, and the side, facing the feeding port, of the material receiving hopper is an outer shell emptying side. A negative pressure exhaust port used for being externally connected with an air extractor is formed in the emptying side of the outer shell, the negative pressure exhaust port is formed in the middle of the emptying side of the outer shell, or the distance between the negative pressure exhaust port and the discharging port and the distance between the negative pressure exhaust port and the feeding port are larger than or equal to the opening width of the material receiving hopper. Compared with the prior art, the oxygen isolation discharging valve has a good oxygen isolation effect during discharging.

Description

Technical Field

[0001] The utility model relates to the field of discharging equipment, in particular to an oxygen-isolating star-shaped discharging valve. Background Art

[0002] The star-shaped discharging valve, also known as a discharger, is a common material conveying control device, and its structure mainly includes a valve body, an impeller, a driving device, a sealing device, etc. When the motor drives the impeller to rotate, materials enter the valve body from the feed inlet, and the rotation of the impeller continuously pushes the materials to the discharge outlet, thus completing the discharging process. However, the existing star-shaped discharging valve will bring air into the storage chamber above it during the discharging process and cannot achieve oxygen-isolating discharging. Content of the Utility Model

[0003] An object of the utility model is to provide an oxygen-isolating star-shaped discharging valve, which has a good oxygen-isolating effect during discharging.

[0004] For the above purpose, the utility model provides an oxygen-isolating star-shaped discharging valve, which comprises an outer shell body and an impeller accommodated in the outer shell body. The impeller has a main shaft and a plurality of blades radially extending from the main shaft and rotatable around the main shaft. A material receiving hopper is formed between adjacent blades, and the distance between the ends of adjacent blades is the opening width of the material receiving hopper. The outer shell body is provided with a feed inlet and a discharge outlet. The side of the outer shell body where the material receiving hopper turns from the discharge outlet to face the feed inlet is the emptying side of the outer shell body, and the other side of the outer shell body opposite to the emptying side of the outer shell body is the storage side of the outer shell body. The emptying side of the outer shell body is provided with a negative pressure exhaust port for connecting an external air extraction device, and the distances from the negative pressure exhaust port to the discharge outlet and the feed inlet are respectively greater than or equal to the opening width of the material receiving hopper.

[0005] Compared with the prior art, the oxygen-isolating star-shaped discharging valve provided by the utility model is provided with a negative pressure exhaust port for connecting an external air extraction device on the emptying side of the outer shell body, and the distances from the negative pressure exhaust port to the discharge outlet and the feed inlet are respectively set to be greater than or equal to the opening width of the material receiving hopper, so that the material receiving hopper empties the internal gas through the negative pressure exhaust port after completely passing over the feed inlet, and at the same time, the material receiving hopper is not communicated with the discharge outlet when exhausting through the negative pressure exhaust port, thereby avoiding bringing the air in the material receiving hopper into the feeding equipment communicated with the feed inlet, and enabling the oxygen-isolating star-shaped discharging valve to have a good oxygen-isolating effect during discharging.

[0006] For the above purposes, the present utility model also provides an oxygen-isolating star-shaped discharge valve, which includes an outer housing and an impeller accommodated in the outer housing. The impeller has a main shaft and a plurality of blades radially extending from the main shaft and rotatable around the main shaft. A material receiving hopper is formed between adjacent blades, and the distance between the ends of adjacent blades is the opening width of the material receiving hopper. The outer housing is provided with a feed inlet and a discharge outlet. The side of the outer housing where the material receiving hopper turns from the discharge outlet to the side facing the feed inlet is the emptying side of the outer housing, and the other side of the outer housing opposite to the emptying side of the outer housing is the storage side of the outer housing. A negative pressure exhaust port for externally connecting an air extraction device is provided in the middle of the emptying side of the outer housing.

[0007] Compared with the prior art, the oxygen-isolating star-shaped discharge valve provided by the present utility model has a negative pressure exhaust port for externally connecting an air extraction device provided in the middle of the emptying side of the outer housing, so that the exhaust time of the material receiving hopper when exhausting the internal gas through the negative pressure exhaust port is the longest, thereby fully exhausting the gas in the material receiving hopper, and thus avoiding bringing the air in the material receiving hopper into the feeding device communicated with the feed inlet, so that the oxygen-isolating star-shaped discharge valve has a good oxygen-isolating effect during discharging.

[0008] In some embodiments of the present application, the number of the blades is at least six, the blades are evenly distributed on the main shaft, and the feed inlet and the discharge outlet are coaxially arranged.

[0009] In some other embodiments of the present application, the number of the blades is four or five, the blades are evenly distributed on the main shaft, and the axis included angle between the feed inlet and the discharge outlet is greater than 90 degrees and less than 180 degrees, and the emptying side of the outer housing is larger than the storage side of the outer housing.

[0010] Specifically, the feed inlet is circular, and the discharge outlet is circular.

[0011] Specifically, the opening width and length of the material receiving hopper are larger than the diameter of the feed inlet. Such a setting can avoid jamming when granular materials enter the hopper, make the conveying and discharging of granular materials smoother, significantly reduce the occurrence frequency of blockage and jamming, extend the service life, and thus effectively reduce the maintenance and replacement costs caused by friction and wear.

[0012] Specifically, the diameter of the discharge outlet is larger than the diameter of the feed inlet.

[0013] Specifically, the outer housing is in a cylindrical shape and is sealed at both ends by end covers.

[0014] Specifically, a driving motor is further provided at one end of the outer housing, and the output end of the driving motor is connected to the main shaft to drive the blades to rotate. Description of the Drawings

[0015] Figure 1 It is the front view of an embodiment of the oxygen-isolating star-shaped discharge valve of the present utility model.

[0016] Figure 2 It is Figure 1 the A-A cross-sectional view of which shows that the impeller has six blades.

[0017] Figure 3 It is the cross-sectional view of the second embodiment of the oxygen-isolating star-shaped discharge valve of the present utility model, showing that the impeller of this embodiment has five blades.

[0018] Figure 4 It is the cross-sectional view of the third embodiment of the oxygen-isolating star-shaped discharge valve of the present utility model, showing that the impeller of this embodiment has four blades.

[0019] Figure 5 It is the cross-sectional view of the fourth embodiment of the oxygen-isolating star-shaped discharge valve of the present utility model.

[0020] Figure 6 It is the partial cross-sectional view of the oxygen-isolating star-shaped discharge valve of the present utility model to show the feed inlet and the receiving hopper.

[0021] Figure 7 It is a schematic diagram showing the external connection of the negative pressure exhaust port of the oxygen-isolating star-shaped discharge valve of the present utility model to an air extraction device. Specific embodiments

[0022] The following combines specific embodiments and the attached drawings to clearly and completely describe the technical solutions in the embodiments of the present application and to elaborate on the technical solutions of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments.

[0023] Please refer to Figures 1 to 2, according to the first embodiment of the oxygen-isolating star-shaped discharge valve 100 of the present invention, it includes a housing 1 and an impeller 2 accommodated in the housing 1; the impeller 2 has a main shaft 20 and a plurality of blades 21 radially extending from the main shaft 20 and rotatable around the main shaft 20. A material receiving hopper 22 is formed between every two adjacent blades 21. The distance between the ends of adjacent blades 21 is the opening width of the material receiving hopper 22. The housing 1 is provided with a feed inlet 11 and a discharge outlet 12. The side of the housing 1 where the material receiving hopper 22 turns from the discharge outlet 12 to face the feed inlet 11 is the housing evacuation side 13, and the other side of the housing 1 opposite to the housing evacuation side 13 is the housing storage side 14. The distance from the negative pressure exhaust port 15 to the discharge outlet 12 is L2, the distance from the negative pressure exhaust port 15 to the feed inlet 11 is L1, and the opening width of the material receiving hopper 22 is L3. L1≥L3 and L2≥L3. Specifically, the housing 1 is in a cylindrical shape and is sealed at both ends by end caps 4. One end of the housing 1 is also provided with a drive motor 5 for driving the main shaft 20 to rotate, and the other end is provided with a bearing seat 6 for supporting the main shaft 20. The drive motor 5 can be a reduction motor that meets the driving power. The output end of the drive motor 5 is connected to the main shaft 20 to drive the blades 21 to rotate. In this embodiment, the feed inlet 11 and the discharge outlet 12 are coaxially arranged, and the number of the blades 21 is at least six, and the blades 21 are evenly distributed on the main shaft 20.

[0024] Please refer to Figure 3 and Figure 4 , according to the second and third embodiments of the oxygen-isolating star-shaped discharge valve 100 of the present invention, the number of the blades 21 is four and five respectively. The blades 21 are evenly distributed on the main shaft 20, and the axis included angle between the feed inlet 11 and the discharge outlet 12 is greater than 90 degrees and less than 180 degrees, and the housing evacuation side 13 is larger than the housing storage side 14.

[0025] Please refer to Figure 5, according to the fourth embodiment of the oxygen-isolating star-shaped discharge valve 100 of the present utility model, when the discharge side 13 of the outer housing cannot accommodate two of the receiving hoppers 22 at the same time - that is, when a position satisfying L1≥L3 and L2≥L3 cannot be found on the discharge side 13 of the outer housing to set the negative pressure exhaust port 15, the negative pressure exhaust port 15 for connecting to the air extraction device 3 is arranged in the middle of the discharge side 13 of the outer housing. Such a setting enables the receiving hopper 22 to have the longest exhaust time when exhausting the gas inside through the negative pressure exhaust port 15, so as to fully discharge the gas in the receiving hopper 22. It should be noted that at this time, when the number of the blades 21 is four, the air extraction device 3 needs to be equipped with an automatic start-stop module. When the negative pressure exhaust port 15 is communicated with the feed inlet 11 or the discharge outlet 12, the automatic start-stop module stops the air extraction device 3 from extracting air to prevent the material from being sucked away by the air extraction device 3.

[0026] Further, please refer to Figure 1 and Figure 2 , the feed inlet 11 is circular, the discharge outlet 12 is also circular, and the diameter of the discharge outlet 12 is larger than that of the feed inlet 11 to facilitate rapid discharging.

[0027] Even further, please refer to Figure 6 again, the opening width and length of the receiving hopper 22 are larger than the diameter of the feed inlet 11. Such a setting can prevent the granular material from jamming when entering the receiving hopper 22 through the feed inlet 11, making the conveying and discharging of the granular material smoother, significantly reducing the frequency of blockage and jamming, prolonging the service life, and effectively reducing the maintenance and replacement costs caused by friction and wear.

[0028] The following is a description of the working principle of the oxygen-isolating star-shaped discharge valve 100 provided by the present utility model. During discharging, first connect the air extraction device 4 to the negative pressure exhaust port 15, and start the air extraction device 3 to apply negative pressure at the negative pressure exhaust port 15. Then, start the drive motor 5 to drive the impeller 2 to rotate first, and then feed granular material from the feed port 11. The granular material is temporarily placed in the material receiving hopper 22 formed by two adjacent blades 21. Then, the material receiving hopper 22 drives the granular material to turn from the feed port 11 to the discharge port 12. When the opening of the material receiving hopper 22 faces the negative pressure exhaust port 15, the gas in the material receiving hopper 22 is extracted and discharged by the air extraction device 4. When the material receiving hopper 22 passes over the negative pressure exhaust port 15, the air extraction process ends. When the opening of the material receiving hopper 22 faces the discharge port 12, the granular material falls off the material receiving hopper 22 under the action of gravity and is completely discharged from the discharge port 12. After that, the emptied material receiving hopper 22 continues to turn from the discharge port 12 to the feed port 11 and again carries the granular material starting from the feed port 11, passes through the negative pressure exhaust port 15 and rotates to the discharge port 12 again for discharging.

[0029] Compared with the prior art, the oxygen-isolating star-shaped discharge valve 100 provided by the present utility model sets a negative pressure exhaust port 15 for externally connecting an air extraction device 3 on the emptying side 13 of the outer housing, and sets the distances from the negative pressure exhaust port 15 to the discharge port 11 and the feed port 12 to be greater than or equal to the opening width of the material receiving hopper 22 respectively, so that the material receiving hopper 22 empties the gas inside through the negative pressure exhaust port 15 after completely passing over the feed port 11, and at the same time, the material receiving hopper 22 is not communicated with the discharge port 12 when exhausting gas through the negative pressure exhaust port 15, thereby effectively emptying the gas in the material receiving hopper 22, and to a great extent avoiding bringing the air in the material receiving hopper 22 into the feeding equipment communicated with the feed port 11, and further enabling the oxygen-isolating star-shaped discharge valve 100 to have a good oxygen-isolating effect during discharging. In addition, the oxygen-isolating star-shaped discharge valve 100 provided by the present utility model also sets the negative pressure exhaust port 15 for externally connecting an air extraction device 3 in the middle of the emptying side 13 of the outer housing, so that in the case where a position satisfying L1≥L3 and L2≥L3 cannot be found on the emptying side 13 of the outer housing to set the negative pressure exhaust port 15, the exhaust time of the material receiving hopper 22 when emptying the gas inside through the negative pressure exhaust port 15 is the longest, thereby fully discharging the gas in the material receiving hopper 22, and to a great extent avoiding bringing the air in the material receiving hopper 22 into the feeding equipment communicated with the feed port 11, and further enabling the oxygen-isolating star-shaped discharge valve 100 to have a good oxygen-isolating effect during discharging.

[0030] The above-disclosed are only the preferred embodiments of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present utility model still fall within the scope covered by the present utility model.

Claims

1. An oxygen-isolating star-shaped discharge valve, characterized in that: The invention comprises an outer shell and an impeller accommodated in the outer shell, the impeller having a main shaft and a plurality of blades radially extending from the main shaft and rotatable around the main shaft, a material receiving hopper is formed between adjacent blades, the distance between the ends of adjacent blades is the opening width of the material receiving hopper, the outer shell is provided with a feed port and a discharge port, the side of the outer shell facing the feed port when the material receiving hopper turns from the discharge port is the emptying side of the outer shell, the other side of the outer shell opposite to the emptying side of the outer shell is the storage side of the outer shell, the emptying side of the outer shell is provided with a negative pressure exhaust port for an externally connected air extraction device, the distances from the negative pressure exhaust port to the discharge port and the feed port are respectively greater than or equal to the opening width of the material receiving hopper.

2. The oxygen-isolating star-shaped discharge valve according to claim 1, characterized in that: The number of the blades is at least six, the blades are evenly distributed on the main shaft, and the feed port and the discharge port are coaxially arranged.

3. The oxygen-isolating star-shaped discharge valve according to claim 1, characterized in that: The number of the blades is four or five, the blades are evenly distributed on the main shaft, and the axial angle between the feed port and the discharge port is greater than 90 degrees and less than 180 degrees, and the emptying side of the outer shell is larger than the storage side of the outer shell.

4. The oxygen-isolating star-shaped discharge valve according to claim 1, characterized in that: The feed opening is circular, and the discharge opening is circular.

5. The oxygen-isolating star-shaped discharge valve according to claim 4, characterized in that: The opening width and length of the material receiving hopper are greater than the diameter of the feed port.

6. The oxygen-isolating star-shaped discharge valve according to claim 4, characterized in that: The diameter of the discharge port is larger than the diameter of the feed port.

7. The oxygen-isolating star-shaped discharge valve according to claim 1, characterized in that: The outer shell is in a cylindrical shape, and both ends are sealed by end covers.

8. The oxygen-isolating star-shaped discharge valve according to claim 1, characterized in that: A driving motor is also provided at one end of the outer shell, and an output end of the driving motor is connected to the main shaft to drive the blades to rotate.

9. An oxygen-isolating star-shaped discharge valve, characterized in that: The invention comprises an outer shell and an impeller accommodated in the outer shell, the impeller having a main shaft and a plurality of blades radially extending from the main shaft and rotatable around the main shaft, a material receiving hopper is formed between adjacent blades, the distance between the ends of adjacent blades is the opening width of the material receiving hopper, the outer shell is provided with a feed port and a discharge port, the side of the outer shell facing the feed port when the material receiving hopper turns from the discharge port is the emptying side of the outer shell, the other side of the outer shell opposite to the emptying side of the outer shell is the storage side of the outer shell, and a negative pressure exhaust port for an external exhaust device is provided in the middle of the emptying side of the outer shell.

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