Primary-secondary ejector

Abstract

The invention provides a primary-secondary ejector and relates to a fluid mixing element for fluids. A central ejector of the primary-secondary ejector is coaxially arranged in an annular ejector; outlets of the central ejector and the annular ejector are communicated with a main mixing chamber and a main mixing tube; one part of a main fluid is ejected from the top of the central ejector to an inlet of a central mixing tube through a central nozzle, is utilized to inject a secondary fluid entering into a central mixing chamber from an inlet in a side position on the upper part of the annular ejector into the central mixing tube and is mixed with the secondary fluid; the other part of the main fluid is ejected from the top of the annular ejector to the inlet of an annular mixing tube through an annular nozzle, is utilized to inject the secondary fluid entering into an annular mixing chamber from the inlet in the side position on the upper part of the annular ejector into the annular mixing tube and is mixed with the secondary fluid; and an ejected fluid at the outlet of the central mixing tube in the main mixing chamber is utilized to inject the surrounding ejected fluid at the outlet of the annular mixing tube into the main mixing tube and is mixed for the third time, thereby finishing the mixed fluid conveying in a way that the high-pressure main fluid pumps the low-pressure secondary fluid. The primary-secondary ejector is short in axial size and high in pumping and ejecting efficiency.

Description

technical field

[0001] The invention relates to a two-fluid mixed flow element, in particular to a female-female ejector. Background technique

[0002] The dual-fluid injector is a device that injects a low-pressure (or no-pressure) secondary fluid with a relatively high-pressure primary fluid, and completes the suction of the secondary fluid by the primary fluid for mixed-mixing, equal-pressure, and mixed-flow delivery. It is simple and reliable, and is used in many kinds of fluid equipment. A typical existing Venturi ejector consists of a primary fluid inlet, a nozzle, a secondary fluid inlet, a mixing chamber, a throat or a mixing diffuser. The secondary fluid passed into the mixing chamber is sucked into the mixing tube by the jet of the primary fluid nozzle, and the primary and secondary fluid is output from the mixing diffuser tube after being mixed and equalized. This ejector has a central nozzle and a single elongated mixing diffuser tube. Existing single-pipe eje...

Examples

Embodiment 1

[0034] The structure of the first embodiment of the parent-child ejector of the present invention, such as figure 1 as shown, figure 1 The upper part is the actual front, and the lower part is the actual rear. The sub-female ejector consists of a short inner tube 1, a central nozzle 2, a connecting sleeve 3, a long and thick outer tube 4 and an annular nozzle 7. The inner pipe 1 and the central nozzle 2 form the central ejector, and the inner pipe 1, the outer pipe 4, the connecting sleeve 3 and the annular nozzle 7 form the annular ejector. The input end of the central ejector is coaxially fixed in the inlet of the expanding diameter section 41 of the input end of the annular ejector, and the middle and rear sections of the central ejector are coaxially suspended in the annular ejector. The middle and rear sections of the outer tube 4, which is axially longer than the outlet of the inner tube 1, constitute the total mixing output pipe. The inner cavity of the inlet section ...

Embodiment 2

[0047] The structure of the second embodiment of the parent-child ejector of the present invention, as Figure 5 shown. Figure 5 The upper part is the actual front, and the lower part is the actual rear. The mother-child ejector consists of a short and small inner tube 10, a central nozzle 20, a connecting sleeve 30, and a thick and long outer tube 40. The inner tube 10 and the central nozzle 20 constitute a central ejector. The inner tube 10, the connecting sleeve 30 and the outer tube 40 form an annular injector. The central ejector is coaxially arranged in the annular ejector, and the outlets of the central ejector and the annular ejector communicate with the main mixing chamber 450 and the main mixing pipe 460 .

[0048]The front portion of the inner tube 10 is a large diameter straight circular central hole, and the middle part is an enlarged diameter hole section made up of the largest diameter straight circular hole section and the backward shrinkage cone, after whi...

Embodiment 3

[0063] see Figure 8 , the structure of this embodiment is basically the same as that of Embodiment 2. Figure 8 The upper part is the actual front, and the lower part is the actual rear. The female ejector consists of a short inner tube 100 , a central nozzle 200 , a connecting sleeve 300 and a long and thick outer tube 400 . The inner pipe 100 and the central nozzle 200 form the central ejector, and the inner pipe 100, the outer pipe 400 and the connecting sleeve 300 form the annular ejector. The input end of the central ejector is coaxially fixed in the entrance of the expanding section of the input end of the annular ejector, and the middle and rear sections of the central ejector are coaxially suspended in the annular ejector. The outer tube 400 is axially longer than the middle and rear section of the inner tube 100 outlet to form a total mixing output pipe. The inner cavity of the inlet section of the total mixing output tube is the total mixing chamber 4500. The mai...

technical field

[0001] The invention relates to a two-fluid mixed flow element, in particular to a female-female ejector. Background technique

[0002] The dual-fluid injector is a device that injects a low-pressure (or no-pressure) secondary fluid with a relatively high-pressure primary fluid, and completes the suction of the secondary fluid by the primary fluid for mixed-mixing, equal-pressure, and mixed-flow delivery. It is simple and reliable, and is used in many kinds of fluid equipment. A typical existing Venturi ejector consists of a primary fluid inlet, a nozzle, a secondary fluid inlet, a mixing chamber, a throat or a mixing diffuser. The secondary fluid passed into the mixing chamber is sucked into the mixing tube by the jet of the primary fluid nozzle, and the primary and secondary fluid is output from the mixing diffuser tube after being mixed and equalized. This ejector has a central nozzle and a single elongated mixing diffuser tube. Existing single-pipe eje...

Examples

Embodiment 1

[0034] The structure of the first embodiment of the parent-child ejector of the present invention, such as figure 1 as shown, figure 1 The upper part is the actual front, and the lower part is the actual rear. The sub-female ejector consists of a short inner tube 1, a central nozzle 2, a connecting sleeve 3, a long and thick outer tube 4 and an annular nozzle 7. The inner pipe 1 and the central nozzle 2 form the central ejector, and the inner pipe 1, the outer pipe 4, the connecting sleeve 3 and the annular nozzle 7 form the annular ejector. The input end of the central ejector is coaxially fixed in the inlet of the expanding diameter section 41 of the input end of the annular ejector, and the middle and rear sections of the central ejector are coaxially suspended in the annular ejector. The middle and rear sections of the outer tube 4, which is axially longer than the outlet of the inner tube 1, constitute the total mixing output pipe. The inner cavity of the inlet section ...

Embodiment 2

[0047] The structure of the second embodiment of the parent-child ejector of the present invention, as Figure 5 shown. Figure 5 The upper part is the actual front, and the lower part is the actual rear. The mother-child ejector consists of a short and small inner tube 10, a central nozzle 20, a connecting sleeve 30, and a thick and long outer tube 40. The inner tube 10 and the central nozzle 20 constitute a central ejector. The inner tube 10, the connecting sleeve 30 and the outer tube 40 form an annular injector. The central ejector is coaxially arranged in the annular ejector, and the outlets of the central ejector and the annular ejector communicate with the main mixing chamber 450 and the main mixing pipe 460 .

[0048]The front portion of the inner tube 10 is a large diameter straight circular central hole, and the middle part is an enlarged diameter hole section made up of the largest diameter straight circular hole section and the backward shrinkage cone, after whi...

Embodiment 3

[0063] see Figure 8 , the structure of this embodiment is basically the same as that of Embodiment 2. Figure 8 The upper part is the actual front, and the lower part is the actual rear. The female ejector consists of a short inner tube 100 , a central nozzle 200 , a connecting sleeve 300 and a long and thick outer tube 400 . The inner pipe 100 and the central nozzle 200 form the central ejector, and the inner pipe 100, the outer pipe 400 and the connecting sleeve 300 form the annular ejector. The input end of the central ejector is coaxially fixed in the entrance of the expanding section of the input end of the annular ejector, and the middle and rear sections of the central ejector are coaxially suspended in the annular ejector. The outer tube 400 is axially longer than the middle and rear section of the inner tube 100 outlet to form a total mixing output pipe. The inner cavity of the inlet section of the total mixing output tube is the total mixing chamber 4500. The mai...

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