Venturi with adjustable nozzle

Abstract

The utility model discloses a venturi with an adjustable nozzle, which belongs to the technical field of venturi and comprises a receiving chamber, and a nozzle body is arranged in the receiving chamber. Mixed gas is mixed at the throat pipe and then discharged out of equipment, the ejector pin can rotate by rotating the rotating ring, relative displacement can be generated between the ejector pin and the inner wall of the nozzle through rotation of the ejector pin, different injection effects are achieved by adjusting the distance between the nozzle body and the throat pipe, and the inner wall of the connecting groove is matched for limiting the connecting block, so that the injection efficiency is improved. The nozzle body can be prevented from rotating along with rotation of the ejector pin, the clamping ring can limit rotation of the ejector pin, it can be guaranteed that the ejector pin moves linearly, when equipment is installed, the bolt is rotated into the fixing opening and the installation opening, and therefore the effective area of the nozzle can be adjusted by increasing the ejector pin, and the service life of the nozzle is prolonged. Different supersonic speeds are generated after passing through the nozzle, and different injection effects are achieved through changes of the pressure of the receiving chamber.

Description

Technical Field

[0001] The utility model belongs to the technical field of Venturi, and in particular relates to a Venturi with an adjustable nozzle. Background Art

[0002] The Venturi ejector is the core device that determines the air intake volume and chemical reaction rate of the loop reactor. The structural parameters of the Venturi ejector are the main factors affecting the air intake volume of the device. Once the device structure is determined, the production volume of the device is difficult to change, and the operating flexibility of the device is small. A Venturi with an adjustable nozzle is needed in the production of hardware parts.

[0003] At present, a Chinese patent with publication number CN112619462A discloses a Venturi structure. The Venturi structure is vertically arranged in the middle of the pipeline, and the Venturi structure includes: a shell, the inner wall of which extends inward to form an annular body, and a first cavity is defined inside the annular body; and a first moving part, which is arranged inside the first cavity, and the first moving part has a first gravity, and the shell at the first cavity is provided with a first air hole, and the first moving part is configured to move up and down to open and close the first air hole. In the Venturi structure of the present invention, the first moving part can move downward by gravity to close the first air hole, prevent external gas from entering the cavity, ensure the sealing of the Venturi structure, and enable it to be arranged in the middle of the pipeline, increase the application scenarios of the Venturi structure, and improve its convenience of use.

[0004] However, when the above device is in use, the Venturi ejector cannot change the position and size of the nozzle, and thus cannot achieve the regulation of the air intake volume and the amount of reactants in the loop reactor. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and propose a venturi with adjustable nozzle. Its advantages are: the effective area of ​​the nozzle can be adjusted by adding a ejector pin, so that different supersonic speeds can be generated after passing through the nozzle, and the pressure of the receiving chamber can be changed to achieve different ejection effects.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A venturi with an adjustable nozzle comprises a receiving chamber, a nozzle body is arranged in the receiving chamber, a moving mechanism is arranged on the top of the nozzle body, an inlet is opened on the inner wall of one side of the receiving chamber, a ejector pin is slidably connected to the inner wall of the inlet, an outlet is opened on the inner wall of the other side of the receiving chamber, a throat connected to the outlet is fixedly connected to the outer wall of the other side of the receiving chamber, and the ejector pin is connected to the inner wall of the nozzle body by a thread.

[0008] Through the above technical scheme: when in use, the air inlet of the ejector pin belongs to the air inlet of the power gas. After the gas passes through the nozzle body, the speed of the gas will reach supersonic speed, generating low pressure in the receiving chamber, which is lower than the pressure at the upper and lower parts of the receiving chamber. The gas at the upper and lower parts of the receiving chamber will be sucked into the receiving chamber, and the mixed gas will be mixed at the throat and then discharged from the equipment. The ejector pin can be rotated by rotating the rotating ring. The rotation of the ejector pin can cause relative displacement with the inner wall of the nozzle. Different ejection effects can be achieved by adjusting the distance between the nozzle body and the throat. The inner wall of the connecting groove is used to limit the connection block, so that the nozzle body can be prevented from rotating with the rotation of the ejector pin. The retaining ring can limit the rotation of the ejector pin, and ensure that the movement of the ejector pin is in a straight line. When installing the equipment, it can be rotated to the fixing port and the installation port by the bolt. Therefore, the effective area of ​​the nozzle can be increased by increasing the ejector pin to achieve different supersonic speeds after passing through the nozzle, and the pressure of the receiving chamber changes to achieve different ejection effects.

[0009] The utility model is further configured that a clamping ring is fixedly connected to an outer wall of one side of the receiving chamber, and a sliding fit is formed between the inner wall of the clamping ring and the ejector pin.

[0010] Through the above technical solution: the setting of the retaining ring can limit the moving direction of the ejector, ensure the linear movement of the ejector, and avoid thread misalignment.

[0011] The utility model is further configured that a rotating ring is fixedly connected to a side of the ejector away from the inlet.

[0012] Through the above technical solution: the provision of the rotating ring can facilitate the staff to perform the rotating operation on the ejector pin.

[0013] The utility model is further configured that a connecting rod is fixedly connected to an inner wall of one side of the receiving chamber, and the connecting rod is in an L-shaped structure.

[0014] Through the above technical solution: the setting of the connecting rod can fix the connecting block.

[0015] The utility model is further configured that the moving mechanism comprises a connecting block fixedly connected to the bottom of the vertical end of the connecting rod, and the top outer wall of the nozzle body is provided with a connecting groove that forms a sliding fit with the connecting block.

[0016] Through the above technical solution: the setting of the connecting block can form a mutual limit with the inner wall of the connecting groove, which can prevent the nozzle body from rotating.

[0017] The utility model is further configured such that the inner wall cross-sections of the connecting block and the connecting groove are both T-shaped structures.

[0018] Through the above technical solution: the T-shaped structure design can avoid separation between the connecting block and the inner wall of the connecting groove.

[0019] The utility model is further configured that a fixing rod is fixedly connected to the top outer wall of the receiving chamber, and one end of the fixing rod is provided with a plurality of evenly distributed fixing openings.

[0020] Through the above technical solution: the setting of the fixing rod can be coordinated with the bolt to rotate to the fixing port so that the equipment can be fixed.

[0021] The utility model is further configured that a mounting rod is fixedly connected to the bottom outer wall of the receiving chamber, and one end of the mounting rod is provided with a plurality of evenly distributed mounting openings.

[0022] Through the above technical solution: the installation rod is set, and the matching bolt is rotated to the installation port to further fix the equipment.

[0023] The beneficial effects of the utility model are:

[0024] 1. The nozzle is adjustable Venturi. After the gas passes through the nozzle body, the speed of the gas will reach supersonic speed, and low pressure will be generated in the receiving chamber, which is lower than the pressure at the upper and lower parts of the receiving chamber. The gas at the upper and lower parts of the receiving chamber will be sucked into the receiving chamber, and the mixed gas will be mixed at the throat and then discharged from the equipment. The rotating ring can rotate the ejector pin, and the rotation of the ejector pin can cause relative displacement with the inner wall of the nozzle. By adjusting the distance between the nozzle body and the throat, different ejection effects can be achieved. The inner wall of the connecting groove is used to limit the connection block, so that the nozzle body can be prevented from rotating with the rotation of the ejector pin. The retaining ring can limit the rotation of the ejector pin, and ensure that the movement of the ejector pin is in a straight line. When installing the equipment, it can be rotated into the fixing port and the installation port by the bolt. Therefore, the effective area of ​​the nozzle can be increased by increasing the ejector pin to achieve different supersonic speeds after passing through the nozzle, and the pressure change of the receiving chamber can achieve different ejection effects.

[0025] 2. The nozzle has an adjustable Venturi, and the connecting block can be fixed by a connecting rod; the connecting block can form a mutual limit with the inner wall of the connecting groove, thereby preventing the nozzle body from rotating; and the T-shaped structure can prevent the connecting block from separating from the inner wall of the connecting groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a Venturi with an adjustable nozzle proposed by the utility model;

[0027] Figure 2 A schematic diagram of a partial cross-sectional structure of a Venturi with an adjustable nozzle proposed by the utility model;

[0028] Figure 3 for Figure 2 Schematic diagram of the enlarged structure at A in the middle

[0029] In the figure: 1. receiving chamber; 2. nozzle body; 3. inlet; 4. outlet; 5. throat; 6. ejector pin; 7. retaining ring; 8. rotating ring; 9. connecting rod; 10. connecting groove; 11. connecting block; 12. fixing rod; 13. fixing port; 14. mounting rod; 15. mounting port. DETAILED DESCRIPTION

[0030] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0033] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0034] Reference Figure 1-3 A venturi with an adjustable nozzle comprises a receiving chamber 1, a nozzle body 2 is arranged in the receiving chamber 1, a moving mechanism is arranged on the top of the nozzle body 2, an inlet 3 is opened on the inner wall of one side of the receiving chamber 1, a ejector pin 6 is slidably connected to the inner wall of the inlet 3, an outlet 4 is opened on the inner wall of the other side of the receiving chamber 1, a throat 5 connected to the outlet 4 is fixedly connected to the outer wall of the other side of the receiving chamber 1, and the ejector pin 6 is connected to the inner wall of the nozzle body 2 by a thread.

[0035] It should be noted that, in the present embodiment, a snap ring 7 is fixedly connected to the outer wall of one side of the receiving chamber 1, and a sliding fit is formed between the inner wall of the snap ring 7 and the ejector pin 6. The snap ring 7 can limit the moving direction of the ejector pin 6, thereby ensuring the linear movement of the ejector pin 6 and avoiding thread misalignment.

[0036] Furthermore, in this embodiment, a rotating ring 8 is fixedly connected to a side of the ejector pin 6 away from the inlet 3 , and the rotating ring 8 can facilitate a worker to perform a rotating operation on the ejector pin 6 .

[0037] In one of the specific embodiments, a connecting rod 9 is fixedly connected to the inner wall of one side of the receiving chamber 1 . The connecting rod 9 is in an L-shaped structure, and the connecting block 11 can be fixed by the connecting rod 9 .

[0038] It should be noted that, in the present embodiment, the movable mechanism includes a connecting block 11 fixedly connected to the bottom of the vertical end of the connecting rod 9, and a connecting groove 10 is provided on the top outer wall of the nozzle body 2 to form a sliding fit with the connecting block 11. The connecting block 11 can form a mutual limit with the inner wall of the connecting groove 10, thereby preventing the nozzle body 2 from rotating.

[0039] Furthermore, in the present embodiment, the cross-sections of the inner walls of the connection block 11 and the connection groove 10 are both T-shaped structures, and the T-shaped structure can prevent the connection block 11 from being separated from the inner wall of the connection groove 10 .

[0040] A fixing rod 12 is fixedly connected to the top outer wall of the receiving chamber 1. One end of the fixing rod 12 is provided with a plurality of evenly distributed fixing openings 13. The fixing rod 12 can be rotated to the fixing openings 13 in cooperation with bolts to fix the device.

[0041] The bottom outer wall of the receiving chamber 1 is fixedly connected with a mounting rod 14, and one end of the mounting rod 14 is provided with a plurality of evenly distributed mounting openings 15. The mounting rod 14 can be rotated to the mounting opening 15 in cooperation with the bolts to further fix the device.

[0042] Working principle: When in use, the air inlet of the ejector pin 6 belongs to the air inlet of the power gas. After the gas passes through the nozzle body 2, the speed of the gas will reach supersonic speed, generating low pressure in the receiving chamber 1, which is lower than the pressure at the upper and lower parts of the receiving chamber 1. The gas at the upper and lower parts of the receiving chamber 1 will be sucked into the receiving chamber 1, and the mixed gas will be mixed at the throat 5 and then discharged from the equipment. The ejector pin 6 can be rotated by rotating the rotating ring 8. The rotation of the ejector pin 6 can cause relative displacement with the inner wall of the nozzle. Different ejection effects can be achieved by adjusting the distance between the nozzle body 2 and the throat 5. The inner wall of the connecting groove 10 limits the connection block 11, so that the nozzle body 2 can be prevented from rotating with the rotation of the ejector pin 6. The retaining ring 7 can limit the rotation of the ejector pin 6, and ensure that the movement of the ejector pin 6 is in a straight line. When installing the equipment, it can be rotated into the fixing port 13 and the installation port 15 by the bolt. Therefore, the effective area of ​​the nozzle can be adjusted by increasing the ejector pin 6 to achieve different supersonic speeds after passing through the nozzle and the change of the pressure in the receiving chamber 1 to achieve different ejection effects.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A venturi with an adjustable nozzle, comprising a receiving chamber (1), characterized in that: A nozzle body (2) is arranged in the receiving chamber (1), a moving mechanism is arranged on the top of the nozzle body (2), an inlet (3) is provided on the inner wall of one side of the receiving chamber (1), a ejector pin (6) is slidably connected to the inner wall of the inlet (3), an outlet (4) is provided on the inner wall of the other side of the receiving chamber (1), a throat (5) connected to the outlet (4) is fixedly connected to the outer wall of the other side of the receiving chamber (1), and the ejector pin (6) is connected to the inner wall of the nozzle body (2) by a thread.

2. A Venturi with adjustable nozzle according to claim 1, characterized in that: A clamping ring (7) is fixedly connected to an outer wall of one side of the receiving chamber (1), and a sliding fit is formed between the inner wall of the clamping ring (7) and the ejector pin (6).

3. A Venturi with adjustable nozzle according to claim 2, characterized in that: A rotating ring (8) is fixedly connected to the side of the ejector pin (6) away from the inlet (3).

4. A venturi with adjustable nozzle according to claim 1, characterized in that: A connecting rod (9) is fixedly connected to an inner wall of one side of the receiving chamber (1), and the connecting rod (9) is in an L-shaped structure.

5. A venturi with adjustable nozzle according to claim 4, characterized in that: The moving mechanism comprises a connecting block (11) fixedly connected to the bottom of the vertical end of the connecting rod (9), and the top outer wall of the nozzle body (2) is provided with a connecting groove (10) which forms a sliding fit with the connecting block (11).

6. A Venturi with adjustable nozzle according to claim 5, characterized in that: The inner wall cross-sections of the connection block (11) and the connection groove (10) are both T-shaped structures.

7. The venturi with adjustable nozzle according to claim 1, characterized in that: A fixing rod (12) is fixedly connected to the top outer wall of the receiving chamber (1), and one end of the fixing rod (12) is provided with a plurality of evenly distributed fixing openings (13).

8. A Venturi with adjustable nozzle according to claim 7, characterized in that: The bottom outer wall of the receiving chamber (1) is fixedly connected with a mounting rod (14), and one end of the mounting rod (14) is provided with a plurality of evenly distributed mounting openings (15).

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