Air jet aspirator for sea water desalination

Abstract

The application provides a kind of air injection air ejector for seawater desalination, including air ejector body, the air ejector body includes suction chamber, speed regulation mechanism, mixing chamber, auxiliary mixing mechanism and diffusion chamber, the front end of the suction chamber is connected with air injection pipeline, and air injection pipeline is communicated with external steam generating equipment, the top of the suction chamber is provided with speed regulation mechanism, the bottom end of the speed regulation mechanism penetrates into the inside of the suction chamber, and the end of the speed regulation mechanism is provided with support mechanism, the air injection air ejector for seawater desalination inserts the inside portion of the suction chamber with extension pipeline, the gas sucked is introduced into the center position through the extension pipeline, so that the sucked gas is surrounded by using air injection medium, the mixing effect of two gases is accelerated, the flow area of the suction chamber is regulated according to the specific flow rate of the ejected steam medium part in the suction chamber through the speed regulation mechanism, and the operation safety is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of seawater desalination, and particularly relates to a jet air extractor for seawater desalination. BACKGROUND

[0002] In a seawater desalination process, gas in a condenser needs to be extracted to form a vacuum state, and an air extractor device needs to be used in the process, wherein a jet air extractor is connected with external high-pressure high-speed steam flow, so that the internal gas flows at high speed, thereby driving the gas in the side condenser to flow outwards to form a vacuum state.

[0003] In the prior art, in order to improve the extraction efficiency of the gas flow in the condenser and the recycling of the mixed gas, the extracted steam needs to be mixed with the extracted condenser gas. The internal gas of the conventional air extractor is only mixed by natural flow, so that the mixing efficiency is poor. On the other hand, when the steam conveying efficiency of the external steam equipment changes, the pressure in the suction chamber also changes. The conventional air extractor cannot regulate the environment in the suction chamber, so that the pressure in the suction chamber is prone to be too large, which has a certain risk. SUMMARY

[0004] In view of the problems in the prior art, the jet air extractor for seawater desalination can regulate the conveying area of the suction chamber according to the injection rate of the steam, so as to have a certain jet rate adjusting function, improve the safety, and accelerate the mixing of the two gas flows and optimize the air extraction efficiency.

[0005] In order to achieve the above-mentioned purpose, the jet air extractor for seawater desalination is implemented by the following technical scheme: a jet air extractor for seawater desalination, comprising an air extractor body, the air extractor body comprising a suction chamber, a speed regulation mechanism, a mixing chamber, an auxiliary mixing mechanism and a diffusion chamber, a jet injection pipeline is connected to the front end of the suction chamber, and the jet injection pipeline is in communication with an external steam generating device, a speed regulation mechanism is arranged on the top of the suction chamber, the bottom end of the speed regulation mechanism penetrates into the inside of the suction chamber, and a support mechanism is arranged at the tail end of the speed regulation mechanism, a stop block is sleeved on the front end surface of the support mechanism, a mixing chamber is connected to the rear end of the suction chamber, a diffusion chamber is arranged at the rear end of the mixing chamber, the inside of the mixing chamber and the diffusion chamber is penetrated by an auxiliary mixing mechanism, and a butt joint pipeline is connected to the rear end of the diffusion chamber.

[0006] Further, an air extraction pipeline is connected to the bottom of the suction chamber, an extension pipeline is connected to the top of the air extraction pipeline, an adjusting chamber is arranged in the middle of the support mechanism, and a top support rod is arranged on the top of the adjusting chamber.

[0007] Further, the bottom of the adjusting chamber is provided with a bottom supporting rod, and the adjusting chamber has a cylindrical structure, the middle axis of the extending pipeline opening coincides with the middle axis of the adjusting chamber, and the end of the bottom supporting rod is fixedly connected with the inner wall of the suction chamber.

[0008] Further, the speed adjusting mechanism comprises an adjusting rod and a threaded rod, the bottom end of the adjusting rod is provided with a worm, and the surface of the threaded rod is provided with a worm wheel.

[0009] Further, the adjusting rod is wholly hidden in the inside of the top supporting rod, the top of the adjusting rod is outwardly arranged from the surface of the suction chamber, and the top end of the adjusting rod is provided with a hand wheel.

[0010] Further, the front end of the threaded rod is inserted into the inside of the stop block, and the rear end of the threaded rod is embedded on the inner wall of the adjusting chamber through a supporting bearing.

[0011] Further, the rear end of the stop block is provided with a surrounding plate, the inside of the stop block is provided with a threaded hole, and the threaded rod is inserted into the inside of the threaded hole.

[0012] Further, the front end of the stop block and the front end of the inner wall of the suction chamber have a conical structure, and a gap is arranged between the surface of the stop block and the inner wall of the suction chamber, and the inside of the surrounding plate is attached to the surface of the adjusting chamber.

[0013] Further, the auxiliary mixing mechanism comprises a pressure bearing fan and a mixing support, the middle of the pressure bearing fan is connected with a transmission rod, the end of the transmission rod is provided with a plurality of mixing supports, the edge of the mixing support is connected with a sliding ring, the side edge of the sliding ring is embedded with a ball, and the inner wall of the mixing chamber is provided with an inner convex ring.

[0014] Further, the surface of the inner convex ring is provided with a sliding groove, the ball is wholly embedded into the inside of the sliding groove, and each sliding ring is supported by cooperating with the ball through the inner convex ring.

[0015] The air ejector for seawater desalination comprises an air ejector body, the air ejector body comprises a jet injection pipeline, a suction chamber, a speed adjusting mechanism, an air ejecting pipeline, a mixing chamber, a diffusion chamber, a butt joint pipeline, an auxiliary mixing mechanism, a pressure bearing fan, a transmission rod, a mixing support, a sliding ring, a ball, an inner convex ring, a sliding groove, an extending pipeline, a supporting mechanism, a stop block, a threaded hole, a surrounding plate, an adjusting rod, a hand wheel, a top supporting rod, a bottom supporting rod, an adjusting chamber, a worm, a threaded rod, a worm wheel and a supporting bearing.

[0016] The seawater desalination air jet aspirator inserts the air suction pipeline into the inner part of the suction chamber, and the extension pipeline is arranged to guide the suction gas to the center position, so that the suction gas is surrounded by the steam medium, the mixing effect of the two gases is accelerated, and the reuse process of the mixed gas is facilitated.

[0017] The seawater desalination air jet aspirator is provided with a speed regulating mechanism inside the suction chamber, which can regulate the effective flow area of the suction chamber according to the specific flow rate and pressure of the steam medium part, so as to increase the flow area to reduce the pressure when the internal pressure is too high, and improve the operation safety inside the aspirator.

[0018] The seawater desalination air jet aspirator is provided with an auxiliary mixing mechanism inside the mixing chamber and the diffusion chamber, which can stir the steam medium and the suction gas, further accelerate the mixing efficiency of the two, and the whole device is driven by the mixed gas flow, without the need for additional power equipment, and has high pressure resistance. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is an outline structure schematic view of the seawater desalination air jet aspirator of the present application;

[0020] Figure 2 It is an auxiliary mixing mechanism structure schematic view of the seawater desalination air jet aspirator of the present application;

[0021] Figure 3 It is a side sectional view of the suction chamber of the seawater desalination air jet aspirator of the present application;

[0022] Figure 4 It is a sectional view of the support mechanism part of the seawater desalination air jet aspirator of the present application;

[0023] Figure 5 It is a connection schematic view of the stop block part of the seawater desalination air jet aspirator of the present application;

[0024] In the figure: 1, jet injection pipeline; 2, suction chamber; 3, speed regulating mechanism; 4, air suction pipeline; 5, mixing chamber; 6, diffusion chamber; 7, butt joint pipeline; 8, auxiliary mixing mechanism; 9, pressure bearing fan; 10, transmission rod; 11, mixing support; 12, slip ring; 13, ball; 14, inner convex ring; 15, sliding groove; 16, extension pipeline; 17, support mechanism; 18, stop block; 19, threaded hole; 20, coaming; 21, adjusting rod; 22, hand wheel; 23, top support rod; 24, bottom support rod; 25, adjusting chamber; 26, worm; 27, threaded rod; 28, worm gear; 29, support bearing. EMBODIMENT

[0025] In order to make the technical means, creative features, purposes and effects of the present application easy to understand, the present application is further described below in conjunction with specific embodiments.

[0026] Please refer to Figures 1 to 5 The present application provides a technical solution: a jet air ejector for seawater desalination, comprising an ejector body, the ejector body comprising a suction chamber 2, a speed regulation mechanism 3, a mixing chamber 5, an auxiliary mixing mechanism 8 and a diffusion chamber 6, the front end of the suction chamber 2 is connected with a jet injection pipeline 1, and the jet injection pipeline 1 is in communication with an external steam generating device, the top of the suction chamber 2 is provided with a speed regulation mechanism 3, the bottom end of the speed regulation mechanism 3 penetrates into the inside of the suction chamber 2, and the end of the speed regulation mechanism 3 is provided with a supporting mechanism 17, the front end surface of the supporting mechanism 17 is sleeved with a stop block 18, the rear end of the suction chamber 2 is connected with a mixing chamber 5, the rear end of the mixing chamber 5 is provided with a diffusion chamber 6, and the inside of the mixing chamber 5 and the diffusion chamber 6 is inserted with an auxiliary mixing mechanism 8, the rear end of the diffusion chamber 6 is connected with a butt joint pipeline 7, the jet air ejector for seawater desalination is mainly used for extracting the gas inside the condenser used in the seawater desalination process to form a vacuum state, the inside of the jet injection pipeline 1 of the ejector adopts a structure form of a variable area nozzle, which can obtain supersonic steam flow at the outlet, the working steam and the sucked gas are fully mixed between the mixing chamber 5 and the diffusion chamber 6 to reduce the sudden compression loss and the loss of residual velocity kinetic energy, after the high-pressure high-speed steam is injected into the inside through the jet injection pipeline 1, the gas entering and exiting from the air extraction pipeline 4 can be driven and discharged outward by the airflow, the vacuum effect of the condenser is realized, the overall flow rate of the steam medium inside the suction chamber 2 is controlled by the speed regulation mechanism 3 in the device, and the mixing efficiency of the steam medium and the sucked gas is accelerated by the auxiliary mixing mechanism 8 at the rear end.

[0027] The bottom of the suction chamber 2 is connected with the air extraction pipeline 4, the top of the air extraction pipeline 4 is connected with the extension pipeline 16, the middle of the supporting mechanism 17 is provided with the adjusting chamber 25, the top of the adjusting chamber 25 is installed with the top supporting rod 23, the bottom of the adjusting chamber 25 is installed with the bottom supporting rod 24, and the adjusting chamber 25 is in a cylindrical structure as a whole, the middle axis of the opening of the extension pipeline 16 coincides with the middle axis of the adjusting chamber 25, the end of the bottom supporting rod 24 is fixed with the inner wall of the suction chamber 2 as a whole, the air extraction pipeline 4 is inserted into the inner side of the suction chamber 2 and provided with the extension pipeline 16, the extracted gas is guided to the center position through the extension pipeline 16, so that the extracted gas is surrounded by the jet medium, the mixing effect of the two gases is accelerated, and the recycling process of the mixed gas is facilitated. Specifically, after the gas in the condenser is extracted into the inner side of the suction chamber 2 through the bottom air extraction pipeline along with the steam medium, the gas is transported to the center position of the suction chamber 2 through the extension pipeline, and after the steam is diffused to the inner edge of the suction chamber 2 through the front-end concentration supporting mechanism 17, the gas extracted at the extension pipeline 16 is surrounded, so that the mixing efficiency of the two gases is accelerated in the subsequent flow process.

[0028] The speed regulating mechanism 3 comprises an adjusting rod 21 and a threaded rod 27, the bottom end of the adjusting rod 21 is installed with a worm 26, the surface of the threaded rod 27 is installed with a worm wheel 28, and the worm wheel 28 and the worm 26 are partially engaged, the adjusting rod 21 is hidden in the inner side of the top supporting rod 23 as a whole, and the top of the adjusting rod 21 penetrates outwards from the surface of the suction chamber 2, the top end of the adjusting rod 21 is installed with a hand wheel 22, the front end of the threaded rod 27 is inserted into the inner side of the stop block 18, and the rear end of the threaded rod 27 is embedded on the inner wall of the adjusting chamber 25 through a supporting bearing 29. Specifically, when the steam effective flow area of the bottom suction chamber 2 is regulated through the top hand wheel 22, the hand wheel 22 is rotated to drive the bottom adjusting rod 21 to rotate, the adjusting rod 21 is matched with the worm wheel 28 through the worm 26, so as to realize the rotation function of the threaded rod 27. Since the top and bottom of the adjusting chamber 25 are fixed by the supporting rods, a stable state can be maintained, the adjusting rod 21 part can be shielded and protected while guiding the airflow, the protection effect of the adjusting mechanism is improved, and the sealing property of the speed regulating mechanism 3 is increased.

[0029] The rear end of the block 18 is provided with a fence 20, the inside of the block 18 is provided with a threaded hole 19, the threaded rod 27 is inserted into the inside of the threaded hole 19, the front end of the block 18 and the front end of the inner wall of the suction chamber 2 are both conical structures, and a gap is provided between the surface of the block 18 and the inner wall of the suction chamber 2, the inside of the fence 20 is attached to the surface of the adjusting chamber 25, the speed regulating mechanism 3 is installed on the inside of the suction chamber 2, and the effective flow area of the suction chamber 2 can be regulated according to the specific flow rate and pressure of the sprayed steam medium, so that the flow area can be increased to reduce the pressure in the case of excessive internal pressure, and the operation safety of the inside of the air extractor is improved. The block 18 is moved transversely, that is, the gap between the side edge of the baffle and the inner wall of the suction chamber 2 is changed, when the pressure and rate of the injected steam medium are too large, the block 18 is moved backward by rotating the hand wheel 22, the gap between the block 18 and the inner wall is enlarged, that is, the flow area is increased, and then the steam medium with high flow rate is slowed down.

[0030] In this embodiment, the auxiliary mixing mechanism 8 includes a pressure-bearing fan 9 and a mixing support 11, the middle of the pressure-bearing fan 9 is connected with a transmission rod 10, the end of the transmission rod 10 is installed with a plurality of mixing supports 11, the edge of the mixing support 11 is connected with a sliding ring 12, the side edge of the sliding ring 12 is embedded with a ball 13, the inner wall of the mixing chamber 5 is provided with an inner convex ring 14, the surface of the inner convex ring 14 is provided with a sliding groove 15, the ball 13 is embedded in the inside of the sliding groove 15, and each sliding ring 12 is supported by the inner convex ring 14 and the ball 13, the inside of the mixing chamber 5 and the diffusion chamber 6 is provided with the auxiliary mixing mechanism 8, the steam medium and the sucked gas can be stirred by the auxiliary mixing mechanism 8, the mixing efficiency of the two is further accelerated, and the whole device is driven by the flow of the mixed gas, without the need for additional power equipment, with high pressure resistance. Specifically, the end of the pressure-bearing fan 9 is blown by the airflow, the transmission rod 10 is driven to rotate, the transmission rod 10 drives the sliding ring 12 at the other end to rotate, the sliding ring 12 and the mixing support 11 are rotated, and the mixing support 11 assists in mixing the steam medium and the sucked gas.

[0031] The foregoing merely illustrates the principles of the application and application of its leading features. This application is not limited to the illustrative embodiments shown and described herein. Rather, this application is capable of operating within a further range of conditions and environments than those specifically described herein, and further modifications can be made without departing from the spirit or scope of the application. Accordingly, the description is to be construed as illustrative only and not restrictive of the broad disclosure or application of the application. The specification and drawings are, accordingly, to be regarded simply as illustrative and with the scope of the application being measured by the appended claims, and not with the specification. No admission is made that any reference constitutes prior art. It is my intent, therefore, to be limited only as appears in the following claims.

[0032] Further, it should be appreciated that although the present specification describes particular embodiments, each of which teaches one or more features or aspects of the application, a combination of features and aspects can be made that are not specifically disclosed in any of the above-described embodiments.

Claims

1. A jet ejector for seawater desalination, comprising an ejector body, characterized in that: The pump body includes an intake chamber (2), a speed regulating mechanism (3), a mixing chamber (5), an auxiliary mixing mechanism (8), and a diffusion chamber (6). The front end of the intake chamber (2) is connected to a jet injection pipe (1), which is connected to an external steam generator. The top of the intake chamber (2) is provided with a speed regulating mechanism (3), the bottom end of which penetrates into the inside of the intake chamber (2). The end of the speed regulating mechanism (3) is provided with a support mechanism (17), and a stop block (18) is fitted on the front surface of the support mechanism (17). The rear end of the intake chamber (2) is connected to a mixing chamber (6). The mixing chamber (5) has a diffusion chamber (6) at its rear end, and an auxiliary mixing mechanism (8) is inserted between the mixing chamber (5) and the diffusion chamber (6). The rear end of the diffusion chamber (6) is connected to a docking pipe (7). The bottom of the suction chamber (2) is connected to an air extraction pipe (4), and the top of the air extraction pipe (4) is connected to an extension pipe (16). The middle of the support mechanism (17) has an adjustment chamber (25), the top of the adjustment chamber (25) is equipped with a top support rod (23), and the bottom of the adjustment chamber (25) is equipped with a bottom support rod (24). 5) The overall structure is cylindrical. The central axis of the opening of the extension pipe (16) coincides with the central axis of the regulating chamber (25). The end of the bottom support rod (24) is fixed to the inner wall of the suction chamber (2) as a whole. The auxiliary mixing mechanism (8) includes a pressure fan (9) and a mixing bracket (11). A transmission rod (10) is connected in the middle of the pressure fan (9). Multiple mixing brackets (11) are installed at the end of the transmission rod (10). A slip ring (12) is connected to the edge of the mixing bracket (11). A ball bearing (13) is embedded on the side of the slip ring (12). The inner wall of the mixing chamber (5) is... An inner convex ring (14) is provided on the wall. A groove (15) is opened on the surface of the inner convex ring (14). The ball (13) is embedded in the inner side of the groove (15). Each slip ring (12) is supported by the inner convex ring (14) and the ball (13). The speed regulating mechanism (3) includes an adjusting rod (21) and a threaded rod (27). A worm (26) is installed at the bottom end of the adjusting rod (21). A worm wheel (28) is installed on the surface of the threaded rod (27). The worm wheel (28) and the worm (26) are partially meshed. The front end of the threaded rod (27) is inserted into the inner side of the stop block (18).

2. The jet exhaust device for seawater desalination according to claim 1, characterized in that: The adjusting rod (21) is completely hidden inside the top support rod (23), and the top of the adjusting rod (21) protrudes outward from the surface of the suction chamber (2). A handwheel (22) is installed at the top of the adjusting rod (21).

3. The jet exhaust device for seawater desalination according to claim 2, characterized in that: The rear end of the threaded rod (27) is embedded into the inner wall of the regulating chamber (25) via a support bearing (29).

4. The jet exhaust device for seawater desalination according to claim 1, characterized in that: The rear end of the stop (18) is provided with a surrounding plate (20), and the inside of the stop (18) is provided with a threaded hole (19), and the threaded rod (27) is inserted into the inside of the threaded hole (19).

5. A jet pump for seawater desalination according to claim 4, characterized in that: The front end of the baffle (18) and the front end of the inner wall of the suction chamber (2) are both tapered, and there is a gap between the surface of the baffle (18) and the inner wall of the suction chamber (2). The inner side of the enclosure (20) is in contact with the surface of the regulating chamber (25).

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