Venturi tube blowing mechanism

Abstract

The utility model provides a kind of injection mechanism for venturi, it is related to venturi technical field, it includes: fixed ring, its top is equipped with air inlet, bottom is equipped with multiple gas outlets;The inside of fixed ring is further equipped with the transition channel that is connected air inlet and multiple gas outlets;Flange plate, it is located on the outer wall surface of fixed ring;Multiple spray pipes, with the central axis of fixed ring as rotating shaft, are circumferentially arranged at the bottom of fixed ring;One end of each spray pipe is communicated with each gas outlet;Air inlet pipe, one end is communicated with air inlet, the other end is used for rare gas into;Wherein, multiple gas outlets are circumferentially distributed at the bottom of fixed ring with the central axis of fixed ring as rotating shaft, the injection mechanism can clean crystalline without disassembling venturi device, avoid affecting the continuity of polysilicon production.

Description

Technical Field

[0001] This utility model relates to the field of venturi tube technology, specifically to a jetting mechanism for venturi tubes. Background Technology

[0002] Currently, the venturi system is commonly used in the waste gas treatment of polysilicon production lines. The venturi system is a waste gas treatment method that mixes waste chlorosilane gas with recycled water. During the waste gas treatment process in the venturi system, silica crystals easily form at the interface between the recycled water and the waste chlorosilane gas. These crystals accumulate inside the venturi system, and as the accumulation increases, gas cannot enter the venturi system normally, affecting polysilicon production. The existing treatment method involves manually disassembling the venturi system, treating its internal components, and then reassembling it. This process is cumbersome, and the increased frequency of treatment leads to a greater workload for manual labor, thus affecting the continuity of polysilicon production. Utility Model Content

[0003] This invention addresses the problems of crystalline buildup affecting gas flow and cumbersome manual cleaning in the process of treating waste gas using Venturi tubes. It provides a blowing mechanism for Venturi tubes that can clean crystalline buildup without disassembling the Venturi tube, thus avoiding disruption to the continuity of polysilicon production.

[0004] The technical solution adopted in this utility model is:

[0005] A venturi jetting mechanism is provided, comprising:

[0006] A fixed ring has an air inlet at its top and multiple air outlets at its bottom; the interior of the fixed ring also has a transition channel connecting the air inlet and the multiple air outlets; a flange is located on the outer wall of the fixed ring; multiple nozzles are arranged circumferentially at the bottom of the fixed ring with the central axis of the fixed ring as the axis of rotation; one end of each nozzle is connected to each air outlet; an air inlet pipe is connected at one end to the air inlet and the other end is used to introduce rare gas; the multiple air outlets are circumferentially distributed at the bottom of the fixed ring with the central axis of the fixed ring as the axis of rotation.

[0007] Optionally, the number of air outlets is 4, and the angle between the connecting lines between the central axis of adjacent air outlets and the central axis of the fixing ring is 90°.

[0008] Optionally, the top of the fixing ring is provided with a through hole, and a slide rod is slidably connected to the fixing ring through the through hole. A limiting ring is provided on the outer wall of the slide rod, and a limiting groove is provided on the inner wall of the limiting ring to slide with each nozzle.

[0009] Optionally, an external threaded sleeve is provided on the outer wall surface of the slide rod away from the bottom of the fixed ring and close to the limiting ring, and a limiting piece is provided on the outer wall surface of the external threaded sleeve close to the limiting ring; the outer diameter of the external threaded sleeve is smaller than the diameter of the through hole, and the outer diameter of the limiting piece is larger than the diameter of the through hole; a screw cap is fitted on the outer wall surface of the slide rod away from the top of the fixed ring and threadedly connected to the external threaded sleeve, and the outer diameter of the screw cap is larger than the diameter of the through hole.

[0010] Optionally, each limiting ring has an arc-shaped cleaning plate at its end, and each arc-shaped cleaning plate is slidably connected to the corresponding nozzle to remove crystals from the surface of each nozzle; the vertical distance between the end face of each arc-shaped cleaning plate away from the limiting ring and the fixed ring is greater than the vertical distance between the end face of the limiting ring away from the fixed ring and the fixed ring.

[0011] Optionally, each nozzle is a circular tube.

[0012] Optionally, baffles are provided on the outer wall surfaces of multiple nozzles.

[0013] Optionally, a limiting rod is provided on the outer wall surface of the slide bar away from the top of the fixing ring.

[0014] Optionally, a solenoid valve is installed inside the intake pipe.

[0015] Optionally, a sealing gasket is provided on the side of the flange facing the multiple nozzles; a sealing ring is provided on the side of the screw cap facing the retaining ring.

[0016] The beneficial effects of this utility model are:

[0017] In practical use, the venturi tube wall is first opened. Then, multiple nozzles on the retaining ring are inserted into the venturi tube through the opening, ensuring that the outlets of the nozzles at the bottom of the retaining ring face the areas inside the venturi tube where crystals are prone to form. After the retaining ring is in contact with the wall of the venturi tube at the opening, it is then fixed in place by a flange on its outer wall. Rare gas is then introduced into the inlet pipe. The rare gas enters multiple transition channels through the inlet at the top of the retaining ring and exits through the outlets. The exited rare gas is blown towards the areas inside the venturi tube where crystals are likely to form, preventing crystal accumulation and ensuring smooth gas flow. In addition, by setting multiple nozzles at the bottom of the fixed ring, the area where crystals are generated inside the venturi tube can be covered, preventing the problem of crystals accumulating in dead corners when a single venturi tube is purged. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the front view of a venturi jetting mechanism disclosed in this embodiment;

[0020] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;

[0021] Figure 3 A schematic diagram of the main structure of the jetting mechanism after the addition of a sliding rod;

[0022] Figure 4 for Figure 3 A magnified view of a portion of point B in the middle;

[0023] Figure 5 for Figure 4 A schematic diagram of the structure without the intake pipe;

[0024] Figure 6 This is a schematic diagram showing the installation position between the baffle plate, the jetting mechanism, and the venturi tube.

[0025] Figure 7 This is a top view of the fixed ring structure.

[0026] Figure 8 This is a bottom view of the structure of the fixed ring.

[0027] Figure label:

[0028] 1-Venturi tube, 10-Tube wall opening;

[0029] 2-Fixing ring, 20-Air inlet, 21-Transition channel, 22-Air outlet, 23-Through hole, 24-Sealing gasket, 25-Venturi nozzle;

[0030] 3-Flange;

[0031] 4- Nozzle;

[0032] 5-Intake pipe;

[0033] 6-Solenoid valve;

[0034] 7-Slide rod, 70-Limiting ring, 701-Limiting groove, 71-Arc-shaped cleaning plate, 72-External threaded sleeve, 73-Limiting plate, 74-Threaded cap;

[0035] 8-Sealing ring;

[0036] 9-Blind. Detailed Implementation

[0037] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0038] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0039] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0040] Example

[0041] Please see Figure 1-8As shown, this embodiment discloses a jetting mechanism for a Venturi tube 1, including a fixed ring 2, a flange 3, multiple nozzles 4, and an air inlet pipe 5. Specifically, an air inlet 20 is provided at the top of the fixed ring 2, and the air inlet 20 is located on the central axis of the fixed ring 2, that is, the central axis of the air inlet 20 is consistent with the central axis of the fixed ring 2. Multiple air outlets 22 are provided at the bottom of the fixed ring 2, and the multiple air outlets 22 are circumferentially distributed at the bottom of the fixed ring 2 with the central axis of the fixed ring 2 as the rotation axis. It should be noted that in the actual use, a Venturi nozzle 25 is connected to the middle of the fixed ring 2, that is, the Venturi nozzle 25 will be used together with the Venturi tube 1. Multiple transition channels 21 are also provided inside the fixed ring 2, the number of transition channels 21 is the same as the number of air outlets 22, wherein one end of each transition channel 21 is connected to the air inlet 20, and the other end is connected to the corresponding air outlet 22, that is, the transition channel 21 connects the air inlet 20 with each air outlet 22. Flange 3 is mounted on the outer wall of the retaining ring 2 and is used to install the retaining ring 2 onto the venturi tube 1. Specifically, an opening 10 is first made in the venturi tube 1 at a location where crystals are prone to accumulate. The opening 10 is spaced a certain distance from the location where crystals accumulate. Then, the flange 3 on the outer wall of the retaining ring 2 is installed at the opening 10 in the venturi tube 1 via a flange connection. Multiple nozzles 4 are located at the bottom of the retaining ring 2. The number of nozzles 4 is the same as the number of outlets 22. One end of each nozzle 4 is connected to one of the outlets 22 at the bottom of the retaining ring 2. The other end is inserted into the venturi tube 1 through the opening 10 before the retaining ring 2 is installed at the opening 10 in the venturi tube 1 via the flange 3. This ensures that the outlet 22 of each nozzle 4 faces the location where crystals are prone to accumulate inside the venturi tube 1. A rare gas is introduced into one end of the air pipe 5. The rare gas enters the transition channel 21 of the fixing ring 2 through the air inlet 20 from the air inlet pipe 5, and then exits from the air outlet 22 connected to multiple transition channels 21. The exited rare gas will cause crystals to accumulate inside the Venturi tube 1, thus preventing crystal accumulation inside the Venturi tube 1. In addition, multiple nozzles 4 can also spray the outer wall of the Venturi nozzle 25 inside the Venturi tube 1, while preventing crystal accumulation on the outer wall of the Venturi nozzle 25. In this embodiment, multiple nozzles 4 can also be welded to the outer wall of the Venturi nozzle 25, and the fixing ring 2 can also be welded to the pipe wall opening 10.

[0042] Furthermore, there are four air outlets 22. The angle between the connecting lines between the central axes of adjacent air outlets 22 and the central axis of the fixing ring 2 is 90°. Specifically, the shape formed by the connecting lines between the four air outlets 22 is a rectangle. That is, the arrangement of the four air outlets 22 can ensure that the rare gas ejected from the air outlets 22 can cover the areas inside the Venturi tube 1 where crystals are prone to accumulate, thus preventing crystals from accumulating in large quantities inside the Venturi tube 1 due to prolonged lack of cleaning.

[0043] The top of the aforementioned fixing ring 2 has a through hole 23, and a sliding rod 7 is slidably connected inside the through hole 23, so that the sliding rod 7 is slidably connected to the fixing ring 2 through the through hole 23. Multiple limiting rings 70 are provided on the outer wall surface of the slide rod 7 located below the bottom of the fixed ring 2. Multiple limiting grooves 701 are opened on the inner wall of the limiting rings 70. The number of limiting grooves 701 is the same as the number of nozzles 4. The multiple limiting grooves 701 are distributed circumferentially with the central axis of the fixed ring 2 as the rotation axis, so that the nozzle 4 is slidably connected to the limiting rings 70 through the limiting grooves 701. That is, when the nozzle 4 blows air into the inside of the venturi tube 1 to prevent the accumulation of crystals, a small amount of crystals will be attached to the outer wall surface of the nozzle 4. After a large amount of crystals have accumulated, the slide rod 7 can be slid. The slide rod 7 drives multiple limiting rods to move along the central axis of the slide rod 7. During the movement of the slide rod 7, the multiple limiting rods on the outer wall surface of the slide rod 7 will clean the crystals attached to the outer wall surface of the nozzle 4, so as to prevent the accumulation of crystals on the outer wall surface of the venturi tube 1 and affect the flow of gas inside the venturi tube 1.

[0044] An external threaded sleeve 72 is provided on the outer wall surface of the slide rod 7 away from the fixed ring 2 and close to the multiple limiting rings 70. A limiting piece 73 is provided on the outer wall surface of the external threaded sleeve 72 close to the outer wall surface of each limiting ring 70. In addition, a screw cap 74 is fitted on the outer wall surface of the slide rod 7 away from the top of the fixed ring 2. The screw cap 74 is threadedly connected to the external threaded sleeve 72. It should be noted that the outer diameter of the external threaded sleeve 72 is smaller than the diameter of the through hole 23, and the outer diameter of the screw cap 74 is larger than the diameter of the through hole 23. That is, after each limiting rod has cleaned the crystals attached to the outer wall surface of the nozzle 4, it is pulled in the opposite direction of the central axis of the slide rod 7 until the external threaded sleeve 72 passes through the through hole 23. At this time, the limiting piece 73 contacts the bottom of the fixed ring 2 and covers the through hole 23, thus isolating the internal and external communication of the venturi tube 1. In addition, the screw cap 74 on the outer wall of the slide rod 7 is threadedly connected to the external threaded sleeve 72 to fix the slide rod 7 and prevent the slide rod 7 from sliding inside the through hole 23, which would cause gas leakage due to the internal and external connection of the venturi tube 1.

[0045] Furthermore, when crystals accumulate on the outer wall of the nozzle 4 inside the venturi tube 1 and are cleaned by the limiting rod, in order to prevent the limiting rod from detaching from the nozzle 4 due to the continuous movement of the sliding rod 7, and the limiting rod from being unable to return to its original position and slide back to the nozzle 4, an arc-shaped cleaning plate 71 can be set to assist in cleaning. That is, to prevent the limiting rod from detaching from the nozzle 4 during the movement of the sliding rod 7, the arc-shaped cleaning plate 71 increases the cleaning distance of the limiting rod.

[0046] The outer wall of the nozzle 4 is a circular tube, which can prevent excessive accumulation of crystals on the outer wall of the nozzle 4. In addition, a solenoid valve 6 is installed inside the air intake pipe 5 to achieve timed control of the introduction of rare gas.

[0047] A baffle plate 9 is provided on the outer wall surface of each of the above nozzles 4. The baffle plate 9 can block the inner wall surface of the Venturi tube 1 at the opening 10 of the tube wall, that is, to prevent crystals from accumulating on the inner wall surface of the Venturi tube 1 near the opening 10 of the tube wall. It should be noted that after the baffle plate 9 is provided, the slide bar 7 and the limiting bar provided on the slide bar 7 will not be provided to avoid mutual interference.

[0048] A sealing gasket 24 is provided on the side of the flange 3 facing the multiple nozzles 4, and a sealing ring 8 is provided on the side of the screw cap 74 facing the fixing ring 2, the purpose of which is to prevent gas leakage in the venturi tube 1.

[0049] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Without conflict, the embodiments and features described in the embodiments of this application can be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A Venturi tube injection mechanism characterized by comprising: include: A fixed ring has an air inlet at its top and multiple air outlets at its bottom; the fixed ring also has a transition channel inside that connects the air inlet and the multiple air outlets. A flange is disposed on the outer wall surface of the retaining ring; Multiple nozzles are arranged circumferentially at the bottom of the fixed ring with the central axis of the fixed ring as the axis of rotation; one end of each nozzle is connected to each air outlet. An air intake pipe, one end of which is connected to the air intake port, and the other end of which is used to introduce rare gas; The multiple air outlets are circumferentially distributed at the bottom of the fixed ring with the central axis of the fixed ring as the axis of rotation.

2. The injection mechanism for a venturi according to claim 1, characterized in that, The number of air outlets is 4, and the angle between the connecting lines between the central axes of adjacent air outlets and the central axis of the fixing ring is 90°.

3. The injection mechanism for a venturi according to claim 1, wherein The top of the fixing ring has a through hole, and a sliding rod is slidably connected to the fixing ring through the through hole. A limiting ring is provided on the outer wall of the sliding rod, and a limiting groove is provided on the inner wall of the limiting ring to slide and connect with each nozzle.

4. The injection mechanism for a venturi according to claim 3, wherein The slide rod is provided with an external threaded sleeve on its outer wall surface away from the bottom of the fixed ring and close to the limiting ring. A limiting piece is provided on the outer wall surface of the external threaded sleeve close to the limiting ring. The outer diameter of the external threaded sleeve is smaller than the diameter of the through hole, and the outer diameter of the limiting piece is larger than the diameter of the through hole. A screw cap is fitted on the outer wall surface of the slide rod away from the top of the fixed ring and threadedly connected to the external threaded sleeve. The outer diameter of the screw cap is larger than the diameter of the through hole.

5. The injection mechanism for a venturi according to claim 3, wherein Each of the limiting rings has an arc-shaped cleaning plate at its end, and each arc-shaped cleaning plate is slidably connected to the corresponding nozzle to remove crystals from the surface of each nozzle; the vertical distance between the end face of each arc-shaped cleaning plate away from the limiting ring and the fixing ring is greater than the vertical distance between the end face of the limiting ring away from the fixing ring and the fixing ring.

6. The injection mechanism for a venturi according to claim 1, wherein Each of the nozzles is a circular tube.

7. The injection mechanism for a venturi according to claim 1, wherein A baffle plate is provided on the outer wall surface of the multiple nozzles.

8. The injection mechanism for a venturi according to claim 3, wherein A limiting rod is provided on the outer wall surface of the slide bar away from the top of the fixed ring.

9. The injection mechanism for a venturi according to claim 1, wherein The intake pipe is equipped with a solenoid valve.

10. The injection mechanism for a venturi according to claim 4, wherein The flange has a sealing gasket on the side facing the plurality of nozzles; the screw cap has a sealing ring on the side facing the fixing ring.

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