Cleaning nozzle and reaction kettle

Abstract

The utility model discloses a cleaning nozzle and a reaction kettle. The jet orifice is hidden in the shell by using the elastic piece, and the movable nozzle is driven by water flow required by cleaning to extend out of the shell so as to expose the jet orifice, so that the cleaning nozzle overcomes the technical difficulty that reaction liquid easily flows into the jet orifice and is solidified to block the jet orifice in the normal reaction process of the reaction kettle; the cleaning spray head can be arranged in the reaction kettle and can be used for cleaning by inputting water flow, so that a manhole cover or a kettle cover is prevented from being opened and closed for multiple times, the current situation that a person stretches into or drills into the reaction kettle for cleaning is also avoided, and the feasibility of automatic cleaning is provided, so that the cleaning efficiency is improved, and the cleaning risk is reduced. Moreover, pneumatic and electric components are prevented from being arranged in the reaction kettle while automatic cleaning is realized, so that the safety requirements of chemical production scenes are met, and the safety risk and the cost for realizing automatic cleaning are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reaction kettle automatic cleaning, especially relates to a cleaning spray head and reaction kettle. BACKGROUND

[0002] After the operation is completed, the inside of the reaction kettle needs to be cleaned, which not only can avoid the contamination of reactants and products during the next operation, but also can improve the service life of the reaction kettle.

[0003] The existing reaction kettle internal cleaning is mostly carried out in an artificial way. After each operation is completed, the manhole cover or kettle cover of the reaction kettle is opened, a cleaning personnel holds a spray gun or sprayer, and then the cleaning personnel stretches into or drills into the inside of the reaction kettle to clean the inside of the reaction kettle. After the cleaning is completed, the cleaning personnel is withdrawn, and the manhole cover or kettle cover is resealed. This cleaning method has two problems. One is that the operation intensity is large, the process is complex, and the cleaning efficiency is reduced. The other is that after the cleaning personnel stretches into or drills into the inside of the reaction kettle, there is a risk of misstarting the stirring program of the reaction kettle, which can easily cause harm to the personnel and has a large safety risk.

[0004] Based on the above, a cleaning spray head and reaction kettle are needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a cleaning spray head and reaction kettle, which can be cleaned in an automatic way, reduce the cleaning intensity, reduce the safety risk, and improve the cleaning efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The cleaning spray head is installed in the reaction kettle and includes a shell, a movable nozzle, and an elastic member, wherein:

[0008] The shell is provided with a nozzle mounting hole and a water inlet hole. The movable nozzle is slidingly arranged in the nozzle mounting hole along the axis direction of the shell. The movable nozzle is provided with a spray port. The spray port is in communication with the water inlet hole. Water flow can flow to the spray port through the water inlet hole.

[0009] The elastic member is arranged in the shell and is drivingly connected to the movable nozzle. The elastic member is used to drive the movable nozzle to slide into the nozzle mounting hole, so that the spray port can be hidden in the nozzle mounting hole.

[0010] The movable nozzle is configured to slide out of the nozzle mounting hole against the elastic force of the elastic member under the action of the water flow, so that the spray port can be exposed to the nozzle mounting hole.

[0011] Optionally, the injection port is disposed on the side of the movable nozzle, and when the injection port is concealed in the nozzle mounting hole, a sealing arrangement is provided between the movable nozzle and the inner wall of the nozzle mounting hole to protect the injection port.

[0012] Optionally, the inner wall surface of the nozzle mounting hole is provided with a mounting groove, and a first sealing ring is provided in the mounting groove. The first sealing ring is used to seal the movable nozzle and the inner wall surface of the nozzle mounting hole to protect the spray port.

[0013] Optionally, the cleaning nozzle further includes a movable seat, and a movable cavity is provided inside the housing. The movable cavity is connected between the water inlet and the nozzle mounting hole, and the movable seat and the elastic element are disposed in the movable cavity.

[0014] One end of the elastic element abuts against the inner wall of the movable cavity, and the other end is connected to the movable seat. The movable seat is fixedly connected to the movable nozzle, and the elastic element is configured such that when the spray port is exposed in the nozzle mounting hole, the elastic element is compressed.

[0015] Optionally, the aforementioned movable nozzle and the aforementioned movable seat are threaded together.

[0016] Optionally, the housing includes a first housing and a second housing, the first housing being provided with the water inlet hole, the second housing being provided with the nozzle mounting hole, and the first housing and the second housing being sealed together and defining the movable cavity;

[0017] The second housing is provided with a through hole that communicates with the nozzle mounting hole. The end of the movable nozzle that is away from the spray port passes through the through hole into the movable cavity and is fixedly connected to the movable seat.

[0018] Optionally, the aforementioned movable nozzle is provided with a guide groove, and the inner wall of the aforementioned through hole is provided with a guide protrusion, which is inserted into the aforementioned guide groove for limiting.

[0019] The reaction vessel is equipped with the aforementioned cleaning nozzle.

[0020] Optionally, the above-mentioned reactor also includes a paddle rod, the cleaning nozzle is fixedly installed on the paddle rod, the paddle rod is provided with a flow channel, and the flow channel is connected to the water inlet of the cleaning nozzle.

[0021] The beneficial effects of the cleaning nozzle and reaction vessel provided by this utility model are as follows: By employing the above-mentioned cleaning nozzle, the spray nozzle is concealed within the housing using an elastic element, and the water flow required for cleaning drives the movable nozzle to extend out of the housing to expose the spray nozzle. This overcomes the technical difficulty that during normal reaction in the reaction vessel, the reaction liquid easily flows into the spray nozzle and solidifies, clogging it. The cleaning nozzle can be built into the reaction vessel, and cleaning can be performed simply by inputting water flow, avoiding the need for repeated opening and closing of the manhole cover or vessel lid, and also avoiding the current situation where personnel need to reach or crawl into the reaction vessel for cleaning. This provides the feasibility of automated cleaning, thereby improving cleaning efficiency and reducing cleaning risks. Furthermore, while achieving automated cleaning, it also avoids the need to install pneumatic or electric components inside the reaction vessel, meeting the safety requirements of chemical production scenarios and reducing the safety risks and costs of implementing automated cleaning. Attached Figure Description

[0022] Figure 1 This is a perspective view of the cleaning nozzle provided by this utility model;

[0023] Figure 2 This is a front view of the cleaning nozzle provided by this utility model when the movable nozzle is retracted;

[0024] Figure 3 This is a partial internal structure diagram of the cleaning nozzle provided by this utility model when the movable nozzle is retracted;

[0025] Figure 4 This is a front view of the cleaning nozzle provided by this utility model when the movable nozzle is extended;

[0026] Figure 5 This is a partial internal structure diagram of the cleaning nozzle provided by this utility model when the movable nozzle is extended;

[0027] Figure 6 This is an exploded front view of the cleaning nozzle provided by this utility model;

[0028] Figure 7 This is a first axial exploded view of the cleaning nozzle provided by this utility model;

[0029] Figure 8 This is an exploded view of the second axial side of the cleaning nozzle provided by this utility model;

[0030] Figure 9 This is a schematic diagram of the internal structure of the reaction vessel provided by this utility model.

[0031] In the picture:

[0032] 1. Housing; 11. First housing; 111. Water inlet; 12. Second housing; 121. Nozzle mounting hole; 1211. Mounting groove; 122. Through hole; 1221. Guide protrusion; 13. Third housing;

[0033] 2. Movable nozzle; 21. Injection port; 22. Guide groove;

[0034] 3. Elastic components;

[0035] 4. Movable seat; 41. Sleeve fitting part; 42. Flange part;

[0036] 51. First sealing ring; 52. Second sealing ring;

[0037] 100. Reactor; 101. Paddle rod; 102. Cleaning nozzle. Detailed Implementation

[0038] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," 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 do not 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0039] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] The following reference Figures 1 to 9 This invention introduces the cleaning nozzle 102 and the reaction vessel 100 provided by this utility model.

[0042] likeFigures 1 to 3 As shown, the cleaning nozzle 102 is installed inside the reactor 100 for cleaning the interior of the reactor 100. It mainly includes a housing 1, a movable nozzle 2, and an elastic element 3. The housing 1 is provided with a nozzle mounting hole 121 and a water inlet hole 111. The movable nozzle 2 is slidably disposed in the nozzle mounting hole 121 along the axial direction of the housing 1. A spray port 21 is provided on the side of the movable nozzle 2, and a first flow channel is provided inside it. The spray port 21, the first flow channel, and the water inlet hole 111 are connected, allowing water to flow through the water inlet hole 111 to the first flow channel, and then through the first flow channel to the spray port 21 for spraying, thereby cleaning the interior of the reactor 100.

[0043] like Figure 2 , Figure 3 As shown, the elastic element 3 is disposed inside the housing 1 and is connected to the movable nozzle 2 via a transmission. The elastic element 3 can generate elastic force, thereby driving the movable nozzle 2 to slide into the nozzle mounting hole 121, so that the spray port 21 can be concealed in the nozzle mounting hole 121. When the spray port 21 is concealed in the nozzle mounting hole 121, the housing 1 (i.e., the inner wall of the nozzle mounting hole 121) can protect the spray port 21, preventing the reaction liquid and other substances inside the reactor 100 from flowing into the spray port 21 during normal operation, and avoiding the phenomenon that the reaction liquid flows into the spray port 21 and solidifies to block the spray port 21.

[0044] When the reactor 100 has completed its normal operation and needs cleaning, such as... Figure 4 , Figure 5 As shown, water is introduced into the housing 1 through the water inlet 111 (water flow direction reference). Figure 4 or Figure 5 As shown by the dashed line, under the action of water flow, the movable nozzle 2 can overcome the elastic force of the elastic element 3 and slide outwards from the nozzle mounting hole 121, so that the spray nozzle 21 can be exposed in the nozzle mounting hole 121. Since the spray nozzle 21 is exposed in the nozzle mounting hole 121, water can be sprayed directly from the spray nozzle 21 to spray and rinse the inside of the reaction vessel 100. Preferably, in this embodiment, a spray nozzle 21 capable of spraying a fan-shaped water flow is used to enhance cleaning efficiency and cleaning effect.

[0045] By employing the aforementioned cleaning nozzle 102, the spray port 21 is concealed within the housing 1 using the elastic element 3, and the water flow required for cleaning drives the movable nozzle 2 to extend out of the housing 1, exposing the spray port 21. This cleaning nozzle 102 overcomes the technical challenge of the reaction liquid easily flowing into and solidifying and clogging the spray port 21 during normal reaction in the reactor 100. The cleaning nozzle 102 can be integrated into the reactor 100, and cleaning can be performed simply by inputting water flow. This avoids the need for repeatedly opening and closing the manhole cover or reactor lid, and also avoids the current situation where personnel need to reach or crawl into the reactor 100 for cleaning, providing the feasibility of automated cleaning, thereby improving cleaning efficiency and reducing cleaning risks. Furthermore, while achieving automated cleaning, it also avoids the need to install pneumatic or electric components inside the reactor 100, meeting the safety requirements of chemical production scenarios and reducing the safety risks and costs of implementing automated cleaning.

[0046] Specifically, such as Figure 2 , Figure 3 and Figure 6 As shown, in this embodiment, the housing 1 includes a first housing 11, a second housing 12, and a third housing 13. The first housing 11 is provided with a water inlet hole 111, and the second housing 12 is provided with a nozzle mounting hole 121. The third housing 13 is threadedly connected to the first housing 11, and the third housing 13 can press the second housing 12 against the first housing 11, so that the first housing 11 and the second housing 12 are sealed together. A hole is provided at one end of the first housing 11 that abuts against the second housing 12. A portion of the inner wall of the hole and a portion of the outer wall of the second housing 12 define a movable cavity. The movable cavity accommodates the aforementioned elastic member 3. The end of the movable nozzle 2 away from the spray port 21 passes through the first housing 11 along the axial direction of the housing 1 and extends into the movable cavity, and is drivenly connected to the elastic member 3 in the movable cavity. Under the elastic force of the elastic member 3, the end of the movable nozzle 2 away from the spray port 21 is subjected to tension, thereby causing the movable nozzle 2 to move towards the water inlet hole 111 within the nozzle mounting hole 121, so that the spray port 21 can be concealed in the second housing 12.

[0047] More specifically, see reference Figure 3 , Figure 6As shown, the cleaning nozzle 102 also includes a movable seat 4, which is movably disposed in the movable cavity along the axial direction of the housing 1. The elastic element 3 includes a spring, and the movable seat 4 includes a sleeve portion 41 and a flange portion 42 connected together. The spring is sleeved on the sleeve portion 41, with one end abutting against the inner wall of the movable cavity (i.e., part of the outer wall of the second housing 12) and the other end abutting against the flange portion 42. The movable seat 4 and the movable nozzle 2 are fixedly connected at one end located in the movable cavity. When water is input, the movable nozzle 2 extends, so that the spray port 21 is exposed in the nozzle mounting hole 121, and the distance between the flange portion 42 and the second housing 12 decreases, and the elastic element 3 is compressed. When the water input stops, the elastic force generated by the compression of the elastic element 3 will drive the movable seat 4 to move away from the second housing 12, so that the distance between the flange portion 42 and the second housing 12 increases, and the movable nozzle 2 will move with the movable seat 4 until the spray port 21 is hidden in the nozzle mounting hole 121.

[0048] Of course, in some other embodiments, the elastic element 3 can also be disposed between the flange portion 42 and the inner wall of the first housing 11, so that both ends of the elastic element 3 are fixedly connected to the flange portion 42 and the first housing 11 respectively. When water is input, the movable nozzle 2 extends, so that the spray port 21 is exposed in the nozzle mounting hole 121, the distance between the flange portion 42 and the second housing 12 decreases, and the elastic element 3 is pulled. When the water input stops, the elastic force generated by the tension of the elastic element 3 will also drive the movable seat 4 to move away from the second housing 12, so that the distance between the flange portion 42 and the second housing 12 increases. At this time, the movable nozzle 2 will move with the movable seat 4 until the spray port 21 is hidden in the nozzle mounting hole 121.

[0049] Optionally, in this embodiment, the movable nozzle 2 and the movable seat 4 are threaded together, which facilitates assembly and maintenance. For example, during assembly, the elastic element 3 is first fitted onto the movable seat 4, then one end of the movable nozzle 2 passes through the second housing 12 from one side, and then the movable seat 4 and the movable nozzle 2 are threaded together on the other side of the second housing 12. Finally, the movable seat 4 is inserted into the first housing 11, the third housing 13 is fitted onto the second housing 12, and the third housing 13 and the first housing 11 are fixedly connected. At this point, the third housing 13 can press the second housing 12 tightly against the first housing 11, thus completing the assembly. It should be noted that in this embodiment, the elastic element 3 is made of a high-strength material to withstand the low-pressure environment that may occur during normal operation of the reactor 100, preventing the movable nozzle 2 from protruding from the nozzle mounting hole 121 during normal operation of the reactor 100.

[0050] refer to Figures 4 to 6As shown, a second flow channel is provided inside the movable seat 4, and the second flow channel is connected to the first flow channel. When water flows into the shell 1 through the inlet hole 111, it passes through the second flow channel and the first flow channel in sequence and enters the spray port 21, and then sprays out from the spray port 21 into the reactor 100. The first flow channel is bent inside the movable nozzle 2, with one end of the first flow channel arranged parallel to the axis of the shell 1 and the other end arranged perpendicular to the axis of the shell 1. When water is input into the shell 1, since in this embodiment, part of the inner wall of the first flow channel is arranged perpendicular to the axis of the shell 1, under the action of water pressure, this part of the inner wall will bear the pressure along the axis of the shell 1, which can drive the movable nozzle 2 to move away from the inlet hole 111. This pressure can overcome the elastic force of the spring, causing the movable nozzle 2 to slide out of the nozzle mounting hole 121, and keeping the spray port 21 exposed outside the nozzle mounting hole 121.

[0051] Alternatively, in some other embodiments, a portion of the inner wall of the first or second flow channel may be angled with the axis of the housing 1, as long as the pressure from the water flow on that portion of the inner wall is sufficient to drive the movable nozzle 2 to move and extend. For example, a protrusion may be provided in the first flow channel, or the first flow channel may be bent within the movable nozzle 2; these are all within the scope of protection of this utility model.

[0052] Preferably, such as Figure 7 As shown, the inner wall of the nozzle mounting hole 121 is provided with a mounting groove 1211, and a first sealing ring 51 is provided in the mounting groove 1211. The first sealing ring 51 is used to seal the movable nozzle 2 and the inner wall of the nozzle mounting hole 121. When the spray nozzle 21 is concealed in the nozzle mounting hole 121, the first sealing ring 51 can seal the inner wall of the movable nozzle 2 and the nozzle mounting hole 121, thereby preventing the reaction liquid in the reactor 100 from flowing into the spray nozzle 21 along the inner wall between the movable nozzle 2 and the nozzle mounting hole 121. This further prevents solidification and clogging, ensuring the normal cleaning function and service life of the cleaning nozzle 102. Optionally, the first sealing ring 51 is made of high-temperature resistant rubber material that can withstand the internal reaction temperature of the reactor 100, avoiding damage to the sealing effect of the first sealing ring 51 by the internal temperature of the reactor 100 during normal operation.

[0053] Furthermore, such as Figure 8 As shown, in this embodiment, a second sealing ring 52 is also provided between the second housing 12 and the first housing 11. Compared with the first sealing ring 51 described above, the second sealing ring 52 is a static sealing type, and therefore will not be subject to shearing action. It is sufficient to seal between the second housing 12 and the first housing 11. This utility model does not make specific limitations on this aspect.

[0054] Preferably, refer toFigure 8 As shown, the second housing 12 is provided with a through hole 122 communicating with the nozzle mounting hole 121. The end of the movable nozzle 2 away from the spray port 21 passes through the through hole 122 into the movable cavity and is fixedly connected to the movable seat 4. The movable nozzle 2 is provided with a guide groove 22, and the inner wall of the through hole 122 is provided with a guide protrusion 1221, which is inserted into the guide groove 22 for limiting. The guide protrusion 1221 and the guide groove 22 can prevent the movable nozzle 2 from rotating around the axis of the housing 1, so that the spray port 21 can spray in a preset direction, ensuring the cleaning effect and cleaning range of the cleaning nozzle 102.

[0055] Optionally, in this embodiment, the movable seat 4, the housing 1, and the movable nozzle 2 are all made of stainless steel, so as to withstand the temperature and pressure environment in the reactor 100, and to withstand the corrosiveness of substances such as reaction liquid and water, so as to avoid rusting or damage to the sealing effect.

[0056] This utility model also provides a reaction vessel 100, such as Figure 9 As shown, the aforementioned cleaning nozzle 102 is installed inside the reactor 100. This cleaning nozzle 102 overcomes the technical difficulty of the reaction liquid easily flowing into the spray port 21 and solidifying and clogging it during normal reaction in the reactor 100. It allows the cleaning nozzle 102 to be built into the reactor 100 and perform cleaning simply by inputting water, avoiding the need for repeatedly opening and closing the manhole cover or reactor lid, and preventing personnel from reaching or crawling into the reactor 100 for cleaning. This provides the feasibility of automated cleaning, thereby improving cleaning efficiency and reducing cleaning risks. Furthermore, while achieving automated cleaning, it also avoids the need for pneumatic or electric components inside the reactor 100, meeting the safety requirements of chemical production scenarios and reducing the safety risks and costs associated with automated cleaning.

[0057] Preferably, in this embodiment, such as Figure 9 As shown, the reactor 100 also includes a paddle 101 with blades that can agitate the reactor 100. A cleaning nozzle 102 is fixedly mounted on the paddle 101, and a flow channel is provided inside the paddle 101, which communicates with the water inlet 111 of the cleaning nozzle 102. By mounting the cleaning nozzle 102 on the paddle 101, interference between the cleaning nozzle 102 and the blades is avoided, overcoming limitations in installation position and space. The cleaning range of the cleaning nozzle 102 can be adjusted by rotating the paddle 101, and the flow channel can be hidden within the paddle 101. This results in high space utilization within the reactor 100 and is suitable for installing the cleaning nozzle 102 into existing conventional reactors 100 at a relatively low retrofit cost, making it highly valuable for widespread adoption.

[0058] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A cleaning nozzle, installed inside a reaction vessel (100), characterized in that, It includes a housing (1), a movable nozzle (2), and an elastic element (3), wherein: The housing (1) is provided with a nozzle mounting hole (121) and a water inlet hole (111). The movable nozzle (2) is slidably disposed in the nozzle mounting hole (121) along the axial direction of the housing (1). The movable nozzle (2) is provided with a spray port (21). The spray port (21) is connected to the water inlet hole (111). Water can flow through the water inlet hole (111) to the spray port (21). The elastic element (3) is disposed inside the housing (1) and is connected to the movable nozzle (2). The elastic element (3) is used to drive the movable nozzle (2) to slide into the nozzle mounting hole (121) so that the spray port (21) can be hidden in the nozzle mounting hole (121). The movable nozzle (2) is configured to overcome the elastic force of the elastic member (3) under the action of the water flow and slide out of the nozzle mounting hole (121) so that the spray port (21) can be exposed in the nozzle mounting hole (121).

2. The cleaning nozzle according to claim 1, characterized in that, The injection port (21) is disposed on the side of the movable nozzle (2), and when the injection port (21) is concealed in the nozzle mounting hole (121), the movable nozzle (2) and the inner wall surface of the nozzle mounting hole (121) are sealed to protect the injection port (21).

3. The cleaning nozzle according to claim 2, characterized in that, The inner wall of the nozzle mounting hole (121) is provided with a mounting groove (1211), and a first sealing ring (51) is provided in the mounting groove (1211). The first sealing ring (51) is used to seal the movable nozzle (2) and the inner wall of the nozzle mounting hole (121) to protect the spray port (21).

4. The cleaning nozzle according to claim 1, characterized in that, The cleaning nozzle (102) also includes a movable seat (4), and a movable cavity is provided inside the housing (1). The movable cavity is connected between the water inlet (111) and the nozzle mounting hole (121). The movable seat (4) and the elastic element (3) are disposed inside the movable cavity. One end of the elastic element (3) abuts against the inner wall of the movable cavity, and the other end is connected to the movable seat (4). The movable seat (4) is fixedly connected to the movable nozzle (2), and the elastic element (3) is configured such that when the spray port (21) is exposed to the nozzle mounting hole (121), the elastic element (3) is compressed.

5. The cleaning nozzle according to claim 4, characterized in that, The movable nozzle (2) and the movable seat (4) are threaded together.

6. The cleaning nozzle according to claim 4, characterized in that, The housing (1) includes a first housing (11) and a second housing (12). The first housing (11) is provided with the water inlet (111), and the second housing (12) is provided with the nozzle mounting hole (121). The first housing (11) and the second housing (12) are sealed together and define the active cavity. The second housing (12) is provided with a through hole (122) communicating with the nozzle mounting hole (121). The end of the movable nozzle (2) away from the spray port (21) passes through the through hole (122) into the movable cavity and is fixedly connected to the movable seat (4).

7. The cleaning nozzle according to claim 6, characterized in that, The movable nozzle (2) is provided with a guide groove (22), and the inner wall of the through hole (122) is provided with a guide protrusion (1221), which is inserted into the guide groove (22).

8. A reaction vessel, characterized in that, The reactor (100) is equipped with a cleaning nozzle (102) as described in any one of claims 1-7.

9. The reaction vessel according to claim 8, characterized in that, The reactor (100) also includes a paddle (101), and the cleaning nozzle (102) is fixedly installed on the paddle (101). A flow channel is provided inside the paddle (101), and the flow channel is connected to the water inlet (111) of the cleaning nozzle (102).

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