Cyclone separation apparatus

Abstract

The present invention provides a cyclone separation apparatus, wherein a separation chamber having a round straight section and a conical section is arranged in a body, the ring side position of the round straight section is provided with an input port extending in a tangential direction, the lower end portion of the conical section is provided with an output port, an axial overflow pipe penetrates through the body, the upper end of the overflow pipe is communicated to the outer portion of the body, the lower end of the overflow pipe extends to the conical section of the separation chamber, and the outer ring surface of the overflow pipe is provided with an expanding section gradually expanded from top to bottom and a contracting section gradually contracted from top to bottom, such that the swirling flow space gradually contracted from top to bottom is formed between the inner ring surface of the body and the outer ring surface of the overflow pipe. According to the present invention,by using the swirling flow space gradually contracted from top to bottom, the fluid input into the body forms the external swirling flow with the stably increased flow rate, such that the to-be-separated substance in the fluid is subjected to throwing separation under the action of centrifugal force so as to achieve the practical benefits of separation effect improving.

Description

technical field [0001] The present invention relates to a kind of swirl flow space that tapers from top to bottom, so that the fluid input into the body forms an external swirl flow that increases the flow rate stably, so that the objects to be separated in the fluid are thrown and separated by centrifugal force, and can be separated. A cyclone separation device that improves the separation effect. Background technique [0002] Press, the cyclone separation device has been widely used in the separation of solid particles to be separated from fluids such as gas or liquid; please refer to figure 1 As shown, the existing cyclone separation device 10 is provided with a separation chamber 111 in a body 11, the separation chamber 111 is provided with a circular straight section 1111 extending downward with the same inner diameter, and at the lower edge of the circular straight section 1111 Connected with a conical section 1112 whose inner diameter tapers from top to bottom, and a...

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Problems solved by technology

[0003] Generally speaking, the greater the flow velocity of the external swirling flow F1 formed after the fluid enters the separation chamber 111 of the main body 11, the greater the centrifugal force and settling pressure will be generated. Relatively, the objects to be separated in the fluid can be thrown out for separation The better the effect is, the size of the swirl space between the inner ring surface of the circular straight section 1111 of the separation chamber 111 and the outer ring face of the overflow pipe 12 does not change in any way, so the flow velocity of the outer swirl flow F1 does not gradually increase. The generated centrifugal force and settling pressure did not gradually increase, but only a small amount of the to-be-separated matter could be separated from the fluid. When the fluid entered the conical section 1112 of the separation chamber 111, it was affected by the shrinkage of the cyclone space, and it became obvious. Increasing the flow velocity of the external swirling flow F1 will generate greater centrifugal force and settling pressure, and a larger amount of the object to be separated will be separated in the fluid. However, the stroke of the conical section 1112 of the separation chamber 111 is quite limited, and in terms of separation effect still insufficient

[0004] The lower end of the overflow pipe 12 extends to the conical section 1112 of the separation chamber 11, so that the lower end of the outer ring of the overflow pipe 12 is close to the inner ring surface of the conical section 1112 of the separation chamber 11, thereby forming a relatively narrow swirl space, However, when the fluid enters the position below the overflow pipe 12 through the narrow swirling flow space, the flow rate of the external swirling flow F1 gradually increases due to the sudden increase in the flow space of the fluid, and the flow rate of the external swirling flow F1 will slow down instantly. The centrifugal force and the settling pressure will also suddenly decrease, which not only affects the effect of throwing the separated matter in the fluid to be separated, but also is very easy to be attracted by the overflow pipe 12, so that the part of the separated matter in the fluid that is not thrown out will be directly separated. As the fluid is sucked out by the overflow pipe 12, the separation effect will be affected

[0005] see figure 2 As shown, it is another kind of cyclone separation device 20 in the market. It is provided with a separation chamber 211 with a circular straight section 2111 and a conical section 2112 in a body 21. There is an input port 212 extending along the tangential direction, and the lower end of the conical section 2112 is provided with an output port 213 to communicate with a container 214; a straight cylindrical overflow pipe 22 is installed in the center of the body 21 , the upper end of the overflow pipe 22 communicates with the outside of the main body 21, and the lower end only extends to the circular straight section 2111 of the separation chamber 21, and the same utilization fluid enters the separation chamber 211 of the main body 21 to form an outward spiral path that flows downward. flow F1, and under the centrifugal force generated by the external swirling flow F1, the fluid to be separated is thrown and separated; however, since the lower end of the overflow pipe 22 only extends to the round straight section 2111 , and quite close to the input port 212 of the main body 21, therefore, the fluid input by the input port 212 of the main body 21 is easily attracted by the overflow pipe 22, so that part of the fluid and the object to be separated flow out directly from the overflow pipe 22 , thereby affecting the separation effect

[0006] In addition, the cyclone separation device will make different settings for various structural parameters of the cyclone separation device according to the minimum particle size or weight of the substance to be separated contained in the fluid, such as the size of each part of the body or the size of the fluid. Input the flow rate to obtain the best separation effect, and in order to meet the needs of different minimum particle sizes or weights to be separated, the industry must prepare multiple sets of cyclone separation devices for different minimum particle sizes or weights to be separated, It is not economical. Therefore, generally, the input flow rate of the fluid will be controlled to meet the needs of different minimum particle sizes or weights of the separated matter. However, the particle size of the separated matter contained in the fluid and other solid particles Or the weight often only has a small difference, and the fluid input flow rate must be controlled quite precisely to separate the to-be-separated substances in the fluid. If the fluid input flow rate is slightly improperly controlled, the best separation effect cannot be obtained. rather than causing trouble in use

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