CN217989688U - A multi-gas inlet adjustable venturi injector with gas diversion - Google Patents

Abstract

The utility model provides a multi-gas inlet adjustable Venturi injector for gas diversion, which is applied in the technical field of gas-liquid jet mixing, comprising a diffusion section, a mixing section, a convergence section, an air suction chamber, an adjustment block, and a method. Lan, sealing block, gas inlet, nozzle, gas guide block. The adjustment block is connected with the nozzle by thread, and the length of the screw thread is adjustable. There are two gas inlets, which are symmetrically distributed in the center, and are connected with the suction chamber by welding. There are 4 gas guide blocks, which are uniformly distributed in the circumferential direction and welded to the inner wall of the converging section in a spiral shape, and its cross section decreases as the diameter of the converging section decreases. The utility model is a multi-gas inlet adjustable Venturi injector for gas diversion, which can improve the gas-liquid mixing efficiency and promote the improvement of production efficiency, and the nozzle can be adjusted, which can be applied to various complex working conditions, and has a simple structure and is reliable. High performance, easy installation and maintenance, wide range of applications.

Description

A multi-gas inlet adjustable venturi injector with gas diversion

technical field

The utility model belongs to the technical field of gas-liquid jet mixing of liquid-phase jet entrained gas phase, and in particular relates to a multi-gas inlet adjustable Venturi jet for gas diversion.

Background technique

Venturi injector is a mixer with simple structure, high energy efficiency, high safety and stability, and is often used in multiphase mixing and mass transfer process. Its working principle is: the liquid is compressed and accelerated by the nozzle to form a high-speed and low-pressure zone at the nozzle outlet, and the gas is sucked into the Venturi ejector from the outside by using the pressure difference between the nozzle outlet and the gas inlet, and then the gas-liquid two-phase is in the mixing section and Violent collision and mixing occur in the diffusion section to achieve the purpose of efficient gas-liquid mixing and mass transfer. Venturi ejectors are widely used in fine chemical industry, refrigeration, aerospace and other fields. In the gas-liquid mixing process, the suction volume, gas-liquid mixing efficiency and the scope of application of the equipment are important indicators for evaluating the advantages and disadvantages of Venturi ejectors.

The Chinese patent application number is CN202121451685.3 discloses a Venturi injector. This utility model adopts a single gas inlet located on one side of the injector, and in order to realize the movement of the nozzle in the cylinder, there are many integral parts and the structure is relatively complicated. But in contrast: multiple gas inlets can make the gas enter the suction chamber more uniformly, and the gas-liquid contact area is larger, while a single gas inlet will make the gas concentrate on one side when entering the suction chamber, and the gas-liquid mixing effect is not good Good; the simple structure of the injector is more conducive to the processing and production of the equipment, efficient and stable operation, and later maintenance and repair.

In order to solve the problems raised in the above-mentioned background technology. The utility model provides a multi-gas inlet adjustable Venturi injector for gas diversion, which has the characteristics of gas diversion, multi-gas inlets, adjustable nozzles, and the like.

Utility model content

In order to achieve the above purpose, the utility model provides the following technical solutions: a multi-gas inlet adjustable Venturi injector for gas diversion, which consists of a diffusion section, a mixing section, a convergence section, an air suction chamber, an adjustment block, a flange, a sealing Block, gas inlet, nozzle, gas guide block. The above-mentioned diffusion section, the above-mentioned mixing section, the above-mentioned converging section and the above-mentioned suction chamber are coaxial and connected sequentially by welding, and the shape of the above-mentioned mixing section and the above-mentioned suction chamber is cylindrical, and the shape of the above-mentioned diffusing section and the above-mentioned converging section is a circle The shape of the above-mentioned gas inlet is cylindrical, and it is connected with the above-mentioned suction chamber by welding, and the axes of the two are coplanar and perpendicular to each other; The axes of the above-mentioned suction chambers are coincident.

Further, the shape of the adjustment block is cylindrical, one side of the adjustment block is connected to the flange by welding, the other side of the adjustment block is vertically inserted into the interior of the suction chamber along the axis, and the inner surface of the adjustment block has internal threads. It is threadedly connected with the above-mentioned nozzle, and the outer surface of the above-mentioned adjustment block is closely matched with the above-mentioned suction chamber and the above-mentioned sealing block.

Further, one side of the above-mentioned flange is connected to the above-mentioned adjustment block by welding, and the other side is connected to the upstream equipment by bolts and nuts; one side of the above-mentioned suction chamber has a hole matching the outer diameter of the above-mentioned adjustment block, which is used for the above-mentioned nozzle Insert the above-mentioned adjustment block into the above-mentioned suction chamber.

Further, the above-mentioned sealing block is cylindrical and welded on one side of the above-mentioned suction chamber, and there is a sealing ring inside the above-mentioned sealing block, which closely cooperates with the above-mentioned adjustment block to prevent medium leakage; the above-mentioned gas inlet has two, the center Symmetrically distributed, and connected with the above-mentioned suction chamber by welding.

Further, the above-mentioned nozzle is composed of a straight pipe section and an outlet section, the straight pipe section and the outlet section are connected by welding, the straight pipe section is a cylinder, one side of the straight pipe section has external threads, and the above-mentioned adjustment block is threaded, and the length of the threaded connection is adjustable , the outlet section is a conical circular frustum, and the outlet section of the nozzle is located inside the convergent section.

Further, the cross-sectional curve of the above-mentioned gas guide block is composed of a smooth streamlined curve composed of three arcs and a straight line, two of which are symmetrical and concave, and the other is convex, and the straight line is in welding contact with the above-mentioned convergent section , the number of the above-mentioned gas guide blocks is four, uniformly distributed in the circumferential direction, and welded to the inner wall of the above-mentioned converging section in a spiral shape, and the cross-section of the above-mentioned gas guiding blocks decreases with the decrease of the diameter of the above-mentioned converging section.

Further, without changing the position of the above-mentioned flange in the axial direction, the threaded length of the above-mentioned adjustment block and the above-mentioned nozzle is rotated, thereby realizing the movement of the above-mentioned nozzle on the axis, and changing the distance from the above-mentioned nozzle to the above-mentioned mixing section (throat mouth distance).

Because the utility model has adopted above technical scheme, the technical effect that it produces is obvious:

1) The design of the gas diversion block of the Venturi injector of the utility model, the gas diversion block is welded on the inner wall of the converging section in a spiral shape, and the cross section of the gas diversion block decreases with the reduction of the diameter of the converging section, which can make After the gas enters the converging section from the suction chamber, it passes through the gas guide block, so that the gas accelerates evenly into the mixing section in a spiral shape, so that the gas and liquid can be fully contacted and mixed, and the cross section of the gas guide block is smooth and streamlined. The resistance when the gas flows through is weak, and the design of the gas guide block can improve the uniformity of the gas-liquid contact, thereby promoting the further improvement of the gas-liquid mixing efficiency.

2) The design of the adjustment block and nozzle of the Venturi injector of the utility model, the nozzle and the adjustment block are connected by threads, and the thread screwing length can be adjusted, and the screwing length can be changed to change the distance between the nozzle and the throat. The distance between throat and mouth changes, so the ability to inhale gas also changes accordingly, to achieve the purpose of controlling the inhalation volume. This design can adjust the structure in time as the working conditions change, so that the inhalation volume is always stable within the target range. The scope of application of the Venturi injector is further expanded.

3) The design of the sealing block of the Venturi injector of the utility model has a sealing ring inside the sealing block, and the sealing ring forms a seal with the adjustment block, which can effectively prevent the leakage of the medium in the suction chamber, and the sealing block is welded on the inside of the suction chamber, with a compact structure .

4) The design of dual gas inlets of the Venturi injector of the utility model, the center of the gas inlets are symmetrically distributed, which can effectively avoid the uneven and side-biased situation when the gas of the single gas inlet injector enters the suction chamber and the convergence section, and also It can improve the intake efficiency, reduce the load of a single gas inlet, etc. Therefore, the venturi injector of the utility model has good mixing effect, simple, stable and reliable structure, large operating flexibility and wide application range.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model Venturi injector.

Fig. 2 is a partial enlarged view of the Venturi injector of the present invention.

Fig. 3 is a cross-sectional view of the converging section of the Venturi injector of the present invention.

Fig. 4 is an internal expansion diagram of the converging section of the Venturi injector of the present invention.

In the figure: 1 diffusion section, 2 mixing section, 3 convergence section, 4 suction chamber, 5 adjustment block, 6 flange, 7 sealing block, 8 gas inlet, 9 nozzle, 10 gas guide block.

detailed description

The utility model will be further described below in conjunction with the accompanying drawings through the following embodiments.

Please refer to Figure 1, a multi-gas inlet adjustable Venturi injector with gas diversion, consisting of a diffuser section 1, a mixing section 2, a converging section 3, a suction chamber 4, an adjustment block 5, a flange 6, and a sealing block 7 , a gas inlet 8, a nozzle 9, and a gas guide block 10.

The above-mentioned diffusion section 1, the above-mentioned mixing section 2, the above-mentioned converging section 3 and the above-mentioned suction chamber 4 are connected on the same axis by welding; the above-mentioned gas inlet 8 and the above-mentioned suction chamber 4 are connected by welding, and the axes of the two are coplanar and vertical One side of the above-mentioned adjustment block 5 is connected with the above-mentioned flange 6 by welding, and the inner surface of the above-mentioned adjustment block 5 has an internal thread, which is threadedly connected with the above-mentioned nozzle 9, and the screw thread length is adjustable. The outer surface of the above-mentioned adjustment block 5 and The above-mentioned suction chamber 4 and the above-mentioned sealing block 7 are closely matched; the above-mentioned sealing block 7 is welded inside the side of the above-mentioned suction chamber 4, and there is a sealing ring inside the above-mentioned sealing block 7, and the sealing ring is closely matched with the above-mentioned adjustment block 5; the above-mentioned There are two gas inlets 8, which are symmetrically distributed in the center, and are connected to the above-mentioned suction chamber 4 by welding; the above-mentioned nozzle 9 is composed of a straight pipe section and an outlet section, and one side of the straight pipe section has an external thread, and the above-mentioned adjustment block 5 is threaded. The outlet section is a conical frustum, and the outlet section of the above-mentioned nozzle 9 is located inside the above-mentioned convergent section 3; the cross-sectional curve of the above-mentioned gas diversion block 10 is composed of a smooth streamlined curve composed of three sections of arcs and a straight line section, of which two sections of arcs are symmetrical And concave, another segment of the arc is convex, the straight line segment is in welding contact with the above-mentioned converging section 3, the number of the above-mentioned gas guide blocks 10 is four, uniformly distributed in the circumferential direction, and welded to the inner wall of the above-mentioned converging section 3 in a spiral shape, and The cross section of the gas guide block 10 gradually decreases as the diameter of the converging section 3 decreases.

The working process of the utility model is as follows: the liquid flows through the flange 6, the adjustment block 5, enters the straight pipe section of the nozzle 9, and then enters the outlet section of the nozzle 9, the diameter of the outlet section is reduced, the liquid speed is accelerated, and the pressure energy is converted into kinetic energy , the kinetic energy gradually increases, the pressure energy continues to decrease, and a high-speed and low-pressure zone is formed at the outlet of the nozzle 9. The gas is driven by the pressure difference from the gas inlet 8 into the suction chamber 4, and the gas is guided by the gas when it flows through the converging section 3 The function of block 10 begins to diverge, and the gas accelerates spirally and uniformly into the mixing section inside the converging section 3, and the gas-liquid two-phase undergoes severe shearing and mixing in the mixing section 2, and the gas-liquid two-phase mixture enters the diffusion section 1 , the pipe diameter expands, the velocity decreases, the kinetic energy is converted into pressure energy, and the pressure gradually increases, thereby promoting the further mixing of the gas-liquid two-phase. When the working conditions change, the threaded length between the adjustment block 5 and the nozzle 9 can be adjusted, thereby changing the distance from the outlet of the nozzle 9 to the mixing section 2 (throat distance), changing the low pressure at the outlet of the nozzle 9, and finally To achieve the purpose of controlling the suction volume, let the Venturi injector always work in an efficient state.

The above embodiments are only used for illustration and not for limiting the technical solutions of the present utility model. Any modification or partial replacement that does not deviate from the spirit of the utility model shall fall within the scope of the claims of the utility model.

Claims (5)

1. A multi-gas inlet adjustable Venturi injector for gas diversion, characterized in that, by the diffusion section, the mixing section, the convergence section, the suction chamber, the adjustment block, the flange, the sealing block, the gas inlet, the nozzle, Composed of a gas diversion block, wherein the various parts are connected as follows: the above-mentioned diffusion section, the above-mentioned mixing section, the above-mentioned convergent section and the above-mentioned suction chamber are connected on the same axis by welding; the above-mentioned gas inlet and the above-mentioned suction chamber are connected by welding, The axes of the two are on the same plane and perpendicular to each other; one side of the adjustment block is connected to the flange by welding, and the other side is connected to the nozzle by threads, and the thread length can be adjusted; the sealing block is welded on the suction Inside one side of the chamber, there is a sealing ring inside, and the sealing ring is closely matched with the above-mentioned adjustment block; the above-mentioned gas inlet and the above-mentioned suction chamber are connected by welding; the above-mentioned nozzle is composed of a straight pipe section and an outlet section, and the side of the straight pipe section has external threads. It is threadedly connected with the above-mentioned adjustment block, and the outlet section is a conical circular frustum, and the outlet section is located inside the above-mentioned converging section; the above-mentioned gas diversion block is in welding contact with the above-mentioned converging section, and is welded to the inner wall of the above-mentioned converging section in a spiral shape. 2. A multi-gas inlet adjustable Venturi injector for gas diversion according to claim 1, characterized in that, the gas diversion block is welded on the inner wall of the above-mentioned converging section in a spiral shape, and the gas diversion block is horizontally The cross-section curve is composed of a smooth streamlined curve composed of three arcs and a straight line, two of which are symmetrical and concave, and the other is convex. The straight line and the above-mentioned convergent section are in welding contact. As the diameter of the above-mentioned converging section decreases, the number of the above-mentioned gas guide blocks is 4, which are evenly distributed in the circumferential direction. 3. A multi-gas inlet adjustable Venturi injector for gas diversion according to claim 1, characterized in that, the nozzle is composed of a straight pipe section and an outlet section, and one side of the straight pipe section has an external thread, which is compatible with the adjustment The blocks are connected by threads, and the length of the threads can be adjusted. 4. A gas-guiding multi-gas inlet adjustable Venturi injector according to claim 1, characterized in that, the above-mentioned sealing block is welded inside the above-mentioned suction chamber, and the inner side of the above-mentioned sealing block has a sealing ring, and the sealing ring A seal is formed with the adjustment block, and one side of the adjustment block is welded to the flange. 5. The multi-gas inlet adjustable Venturi injector for gas diversion according to claim 1, characterized in that, the number of the gas inlets is 2, and the center is symmetrically distributed, and is connected with the above-mentioned suction chamber by welding, The axis of the suction chamber and the axis of the gas inlet are on the same plane and are perpendicular to each other.

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