Non-return and flow-guiding tubular centrifuge

Abstract

The present invention relates to a non-return and flow-guiding tubular centrifuge, which comprises: a drum with a hollow feed shaft formed at the bottom; and a feed pipe located below the hollow feed shaft and used for feeding the drum; the tubular centrifuge is characterized in that a non-return and flow-guiding valve sealed with the drum is arranged above the hollow feed shaft of the drum; the non-return and flow-guiding valve comprises: a valve core with a plurality of valve core through holes distributed on the periphery and a flow-guiding pipe connected at the center; a valve cover wrapping the valve core and formed with a plurality of valve cover through holes; and a sealing ring arranged on the periphery of the valve core.

Description

Technical Field

[0001] The invention relates to a centrifuge, in particular to a tubular centrifuge. Background Art

[0002] At present, the function of the check valve of vertical centrifuges at home and abroad is a single function to stop all the liquid backflow. As the centrifuge drum stops rotating, the liquid cannot flow back to the liquid pump through the input pipe for separation, and can only be retained in the drum, and then the machine is shut down and the remaining material is manually poured out by disassembly. Therefore, the use of the check valve with traditional structure causes a waste of manpower and time, especially the precious centrifugal liquid, resulting in a large amount of raw materials wasted, increasing the centrifugal cost and making it difficult to improve production efficiency. Summary of the invention

[0003] Problems to be solved by the invention:

[0004] In view of the above problems, the present invention provides a non-return and flow-guiding tubular centrifuge capable of preventing liquid from leaking out of the periphery of a feed pipe.

[0005] Means of solving the problem:

[0006] The non-return and flow-guiding tubular centrifuge involved in the present invention comprises: a drum with a hollow feed shaft formed at the bottom; and a feed pipe located below the hollow feed shaft and used to feed the drum; the tubular centrifuge is characterized in that a non-return and flow-guiding valve sealed with the drum is arranged above the hollow feed shaft of the drum; the non-return and flow-guiding valve comprises: a valve core with a plurality of valve core through holes distributed on the periphery and a flow-guiding pipe connected to the center; a valve cover wrapping the valve core and formed with a plurality of valve cover through holes; and a sealing ring arranged on the periphery of the valve core.

[0007] According to the above structure, when the centrifuge is performing material-liquid separation, the sealing ring expands due to the centrifugal force and no longer blocks the valve core through hole on the valve core, and a negative pressure is generated around the valve core, so that when the feed liquid is input from the feed pipe, the feed liquid is input into the drum through the valve core periphery, the valve core through hole, and the valve cover through hole. When the centrifuge has no centrifugal force, the sealing ring returns to and seals the valve core through hole on the valve core, so that part of the residual feed liquid flows back to the feed pipe through the valve cover through hole, the valve cover gap, and the guide pipe.

[0008] Preferably, the flow guide pipe is provided with a quadrangular plate.

[0009] According to the above structure, the negative pressure generated by the centrifugal force can be strengthened by the rotatable quadrangular plate sleeved on the outer periphery of the guide tube.

[0010] Preferably, an enveloping tube is formed above the feed pipe; the flow guide tube is inserted into the enveloping tube by a certain distance, and the outer periphery of the flow guide tube maintains a safe distance from the enveloping tube.

[0011] According to the above structure, the enveloping pipe above the feed pipe can further ensure that the reflux liquid will not leak out. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the non-return and flow-guiding tubular centrifuge of the present invention;

[0013] Figure 2 is a three-dimensional diagram of the non-return guide valve of the present invention;

[0014] Figure 3 It is a cross-sectional schematic diagram of the non-return guide valve of the present invention in a material feeding state;

[0015] Figure 4 It is a cross-sectional schematic diagram of the non-return diverter valve of the present invention in the diverting state. DETAILED DESCRIPTION

[0016] The structure of the tubular centrifuge, such as Figure 1 As shown, it has a housing, a drum 1 accommodated in the housing, and a feed pipe 2 located below the drum 1. The non-return guide valve 3 of the present invention is arranged at the lower part of the drum 1, that is, at the position where the drum 1 is connected to the feed pipe 2 ( Figure 1 middle frame position).

[0017] The following Figures 2~4 , a check valve according to an embodiment of the present invention is described in detail.

[0018] Figure 2 It is a stereoscopic view of the non-return guide valve of the present invention. Figure 3 It is a cross-sectional schematic diagram of the non-return guide valve of the present invention in the material feeding state. Figure 4 It is a cross-sectional schematic diagram of the non-return diverter valve of the present invention in the diverting state.

[0019] like Figure 2 As shown, the check valve 3 includes: a valve cover 31 , a valve core 32 , and a flow guide pipe 33 located below the center of the valve core 32 .

[0020] The valve cover 31 is formed into a substantially umbrella-shaped structure, and a plurality of valve cover through holes 311 are formed on the umbrella surface (inclined surface). The valve cover 31 half-wraps and covers the valve core 32 described below from the side circumference and the upper circumference of the valve core, and there is a certain gap between the valve cover 31 and the valve core 32.

[0021] In addition, the plurality of valve cover through holes 311 formed on the umbrella surface of the valve cover 31 are preferably arranged at equal intervals, so that the liquid can be uniformly output to the drum 1.

[0022] The valve core 32 is formed in a disk-shaped top surface and has a side circumferential surface extending downward formed on the outer circumference of the disk, thereby forming a cylindrical shape (or a cylinder cover shape) with an open bottom.

[0023] The valve core 32 has a through hole formed at the center of its top surface, which is connected to the flow guide tube 33 described below, and a plurality of valve core through holes 322 are formed on the side circumference. The plurality of valve core through holes 322 formed on the side circumference of the valve core 32 are preferably arranged at equal intervals, so that the liquid can be uniformly output to the drum 1, and a uniform negative pressure can be formed in combination with the four-sided plate described below.

[0024] In addition, the diameter of the valve core 32 is smaller than that of the valve cover 31 , so that when the valve cover 31 covers the top surface and the side circumference of the valve core 32 , there is a certain gap for the conveying pipe 2 to flow.

[0025] The flow guide tube 33 is formed into a through-tube shape. As mentioned above, the upper end opening of the flow guide tube 33 is connected to the through-hole on the top surface of the valve core 32, thereby forming an integrated flow guide channel. The lower end opening of the flow guide tube 33 is aligned with the opening of the material delivery pipe 2, but does not contact the material delivery pipe 2, so as not to affect the contact friction loss between the guide tube 33 and the material delivery pipe 2 during the rotation of the drum 1.

[0026] Under the above structure, a material delivery space (negative pressure space) is formed between the outer periphery of the flow guide pipe 33 and the inner periphery of the valve core 32. The material delivery space means that when the drum 1 rotates and the material delivery pipe 2 delivers liquid material into the drum, the liquid material can be sequentially delivered into the drum 1 through the material delivery pipe 2, the material delivery space, the valve core through hole 322 (flow guide pipe 33), and the valve cover through hole 311.

[0027] In addition, a sealing ring 34 smaller than the gap is sleeved on the outer periphery of the valve core 32 .

[0028] Under normal circumstances (stationary state), the sealing ring 34 tightly wraps the outer periphery of the valve core 32, thereby blocking the valve core through hole 322. When the drum 1 rotates, the sealing ring 34 expands outward due to the centrifugal force, thereby clinging to the inner circumference of the valve cover 31. At this time, the valve core through hole 322 is opened, thereby allowing the slurry to flow out through the valve core through hole 322.

[0029] Under normal circumstances (static state), the sealing ring 34 tightly wraps the outer periphery of the valve core 32, thereby blocking the valve core through hole 322. At this time, if there is residual liquid in the drum 1, its only flow path is the valve cover through hole 311, the gap between the top surface of the valve core 32 and the valve cover 31, the guide tube 33, and finally flows to the feed pipe 2.

[0030] When the drum 1 rotates, the sealing ring 34 expands outward due to the centrifugal force, thereby closely contacting the inner circumference of the valve cover 31 . At this time, the valve core through hole 322 is opened, thereby allowing the feed liquid to flow out through the valve core through hole 322 .

[0031] As described above, a material feeding space is formed between the flow guide tube 33 and the valve core 32, which forms a negative pressure when the drum 1 rotates, thereby guiding the liquid to pass through the space and enter the drum 1 through the valve core through hole 322 and the valve cover through hole 311. At this time, as a preferred structure of the present invention, a quadrangular plate 5 can be sleeved on the outer periphery of the flow guide tube 33, and the quadrangular plate 5 can rotate freely relative to the flow guide tube 33, thereby forming a fan structure.

[0032] Regarding the quadrangular plate 5, when the drum 1 rotates, negative pressure is formed in the feeding space, and the quadrangular plate rotates synchronously driven by the drum. The rotation of the quadrangular plate 5 further strengthens the negative pressure in the feeding space to form suction, thereby improving the efficiency of the feeding pipe 2 while further strengthening the guiding effect of the flow of the material liquid.

[0033] As described above, when the drum 1 stops rotating, the sealing ring 34 returns to the size of wrapping the outer periphery of the valve core 32. At this time, the liquid remaining in the drum 1 passes through the valve cover through hole 311, the gap between the top surface of the valve core 32 and the valve cover 31, and the guide pipe 33 in sequence, and finally flows into the feed pipe 2. At this time, as a preferred structure of the present invention, an enveloping pipe 4 can be arranged above the feed pipe 2.

[0034] As described above, when the drum 1 stops rotating, the sealing ring 34 returns to the size of wrapping the outer periphery of the valve core 32. At this time, the liquid remaining in the drum 1 passes through the valve cover through hole 311, the gap between the top surface of the valve core 32 and the valve cover 31, and the guide pipe 33 in sequence, and finally flows back to the feed pipe 2. At this time, as a preferred structure of the present invention, an enveloping pipe 4 can be provided above the feed pipe 2.

[0035] Regarding the enveloping tube 4, it is arranged above the feed pipe 2, and its inner diameter is slightly larger than the guide tube 33, so that a certain gap is formed between it and the guide tube 33, that is, a safe distance is maintained, so that the feed liquid can flow and there will be no contact friction loss between the guide tube 33 and the enveloping tube due to the rotation of the drum 1.

[0036] At the same time, the height of the enveloping tube 4 is slightly higher than the bottom surface of the guide tube 33 in the horizontal position, that is, the guide tube 33 is slightly inserted into the enveloping tube 4 by a certain distance. The reason is that, as mentioned above, when the drum 1 stops rotating, the liquid will eventually flow back to the feed pipe 2 through the guide tube 33, but the guide tube 33 is not in contact with the feed pipe 2. Therefore, when the liquid flows back, it may splash outward. The enveloping tube 4 can prevent the liquid from splashing outward when it flows back.

[0037] The above is a structural description of the check guide valve for a tubular centrifuge of the present invention. In the above description, the inventive spirit of the present invention is described in detail, but the description only exemplifies an implementation method of a preferred state of the present invention. The implementation method of the present invention is not limited to the content of the above description. Without violating the inventive spirit of the present invention, the increase, reduction, and simple replacement of related components and / or structures shall fall within the protection scope of the present invention.

[0038] Marking symbols:

[0039] 1 rotating drum;

[0040] 2. Feed pipe;

[0041] 3. Check valve;

[0042] 31 Check valve cover;

[0043] 311 Valve cover through hole;

[0044] 32 Check valve core;

[0045] 322 valve core through hole;

[0046] 33. Draft tube;

[0047] 34 sealing ring;

[0048] 4 including tube;

[0049] 5 Four-sided plate.

Claims

1. A non-return and flow-guiding tubular centrifuge, which is include: A rotating drum with a hollow feed shaft is formed below; and a feeding pipe located below the feeding hollow shaft for feeding the drum; characterized in that a check valve sealed with the drum is provided above the feeding hollow shaft of the drum; The non-return diversion valve comprises: a valve core with a plurality of valve core through holes distributed on the periphery and a diversion pipe connected to the center; the diversion pipe is formed into a through-tube shape, and the upper end opening of the diversion pipe is connected to the through-hole on the top surface of the valve core, thereby forming an integrated diversion channel; A valve cover wrapping the valve core and formed with a plurality of valve cover through holes; and a sealing ring arranged on the outer periphery of the valve core; When the centrifuge is performing material-liquid separation, the sealing ring expands due to the centrifugal force and no longer blocks the valve core through hole on the valve core, and negative pressure is generated around the valve core, so that the material liquid is input into the drum through the valve core periphery, the valve core through hole, and the valve cover through hole; When the centrifuge has no centrifugal force, the sealing ring recovers and seals the valve core through hole on the valve core, so that part of the residual liquid flows back to the feed pipe through the valve cover through hole, the valve cover gap and the guide pipe.

2. The non-return and flow-guiding tubular centrifuge according to claim 1, Features: The flow guide pipe is provided with a quadrangular plate.

3. The non-return and flow-guiding tubular centrifuge according to claim 2, Features: An enveloping tube is also formed above the feed conveying tube; The guide tube is inserted into the enveloping tube by a certain distance, and the outer periphery of the guide tube maintains a safe distance from the enveloping tube.

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