A new structure of cushioning ceramic nozzle

Abstract

The utility model discloses a kind of shock-absorbing ceramic nozzles of novel structure, it is related to ceramic nozzle technical field.The utility model includes orifice plate, the side fixed connection of orifice plate has first fixed component, the inner chamber of orifice plate is provided with composite ceramic tube, the side fixed connection of composite ceramic tube has connecting column.The utility model is significantly improved nozzle overall connection strength and anti-vibration ability by the double fixed structure of first fixed component and second fixed component, effectively avoids the risk of loosening, in first fixed component, limit tube provides stable installation pedestal for connecting column, pin rod can be automatically clamped into connecting column pinhole under the action of spring and form preliminary fixation, further limit connecting column movement by cooperating with limit screw sleeve axial compression, in second fixed component, limit sleeve adheres to pipe clamp top and bottom, limit frame exerts stable clamping force to limit sleeve under screw rod drive, avoid pipe clamp bolt loosening due to vibration.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic nozzle technology, and in particular relates to a novel shock-absorbing ceramic nozzle. Background Technology

[0002] The application scenarios of nozzles in catalytic cracking units are very wide. Conventional nozzle structures are generally made of round steel machined or have a ceramic inner core and a seamless steel tube outer shell.

[0003] Chinese patent application CN222490640U discloses a novel vibration-damping ceramic nozzle, comprising a composite ceramic tube with flanges at both ends along the axial direction. Refractory ceramic fibers are disposed between the composite ceramic tube, the flanges, and the main body of the equipment. A fixing clamp is disposed on the outside of the refractory ceramic fibers. This invention eliminates the seamless steel pipe outside the composite ceramic tube, preventing loosening between the outer sleeve and the composite ceramic tube due to different materials under vibration and stress fluctuations, thus improving the stability of the equipment. The refractory ceramic fibers filling the space between the orifice plate and the composite ceramic tube provide vibration damping and facilitate stress release. The fixing method uses a pipe clamp connection, which facilitates the inspection and replacement of the composite ceramic tube.

[0004] Although the patented design uses refractory ceramic fibers to provide shock absorption and facilitate stress release, the connection strength is poor due to the use of only pipe clamps for fixing. Vibration can easily cause the bolts to loosen, which in turn can lead to the pipe clamps loosening, and further may cause the ceramic nozzle to loosen and fall off.

[0005] To address these issues, we provide a novel vibration-damping ceramic nozzle with a novel structure. Utility Model Content

[0006] The purpose of this invention is to provide a novel shock-absorbing ceramic nozzle. By combining the first fixing component and the second fixing component, the invention solves the problem that existing shock-absorbing ceramic nozzles, which are only fixed by a single pipe clamp, are at risk of loosening and falling off.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0008] This utility model discloses a novel vibration-damping ceramic nozzle, comprising an orifice plate. A first fixing component is fixedly connected to one side of the orifice plate. A composite ceramic tube is disposed within the inner cavity of the orifice plate. A connecting post is fixedly connected to one side of the composite ceramic tube, and the other side of the connecting post extends into the inner cavity of the first fixing component. The gap between the composite ceramic tube and the orifice plate is filled with refractory ceramic fibers. A tube clamp is disposed on the outer side of the refractory ceramic fibers. A second fixing component is disposed at the top and bottom of the tube clamp. The first fixing component includes a limiter fixedly connected to the surface of the orifice plate. The limiting tube has an insertion hole in its inner cavity, and an installation hole in its inner cavity. A pin is provided in the inner cavity of the installation hole. One end of the pin is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the installation hole. A limiting sleeve is threadedly connected to the surface of the limiting tube. The second fixing component includes a limiting sleeve fitted on the top and bottom of the tube clamp. The limiting sleeve is slidably connected to the orifice plate. A limiting frame is fitted on the surface of the limiting sleeve. A lead screw is fixedly connected to one side of the limiting frame through a bearing. The lead screw is threadedly connected to the surface of the orifice plate.

[0009] The present invention is further configured such that the end of the connecting post away from the composite ceramic tube extends into the inner cavity of the insertion hole, and its surface is provided with a pin hole for use with the pin rod, the pin hole providing a precise locking point for the pin rod.

[0010] The present invention is further configured such that one end of the pin extends into the inner cavity of the pin hole, thereby directly realizing the physical engagement between the pin and the connecting post, so that the connecting post cannot be dislodged from the insertion hole of the limiting tube by itself.

[0011] The present invention is further configured such that one side of the limiting screw sleeve is designed with a flared opening, and when the limiting screw sleeve moves axially to press the pin, the inclined surface of the flared opening can apply pressure evenly to the pin.

[0012] The present invention is further configured such that the inner cavity of the limiting sleeve has grooves for fitting bolts and nuts on both sides. The grooves can accommodate the bolts and nuts used for splicing pipe clamps, preventing the bolts and nuts from being exposed and preventing external factors from causing the bolts to loosen. At the same time, the inner wall of the limiting sleeve is completely fitted with the outer wall of the pipe clamp, ensuring that the clamping force of the limiting sleeve on the pipe clamp is evenly distributed and improving the fixing stability of the second fixing component.

[0013] The present invention is further configured such that a first slider is fixedly connected to one side of the limiting sleeve, and a first sliding groove is provided on the back of the perforated plate and at the top and bottom of the tube clamp. The side of the first slider away from the limiting sleeve is slidably connected to the first sliding groove. The first slider and the first sliding groove are used in conjunction to allow the limiting sleeve to slide along the first sliding groove and restrict the movement direction of the limiting sleeve.

[0014] The present invention is further configured such that a second sliding groove is provided at both the upper and lower ends of one side of the back of the perforated plate, and a second slider is slidably connected to the inner cavity of the second sliding groove. The other side of the second slider is fixedly connected to the limiting frame. The second sliding groove and the second slider work together to make the limiting frame move only in a straight line along the second sliding groove. When the screw is rotated to drive the limiting frame, the limiting frame can be prevented from deflecting, ensuring that it accurately applies clamping force to the limiting sleeve, improving the fixing accuracy of the second fixing component, and preventing the limiting frame from shifting and being damaged.

[0015] The present invention is further configured such that a turntable is fixedly connected to the end of the lead screw away from the limiting frame, and a rubber sleeve is provided on the surface of the turntable, so that the turntable can easily rotate the lead screw and reduce the difficulty of operation.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model significantly improves the overall connection strength and vibration resistance of the nozzle through the dual fixing structure of the first fixing component and the second fixing component, effectively avoiding the risk of loosening. In the first fixing component, the limiting tube provides a stable mounting base for the connecting column. The pin can automatically be inserted into the pin hole of the connecting column under the action of the spring to form a preliminary fixation. Then, with the axial pressing of the limiting screw sleeve, the movement of the connecting column is further restricted. In the second fixing component, the limiting sleeve fits the top and bottom of the pipe clamp. The limiting frame applies a stable clamping force to the limiting sleeve under the drive of the screw, preventing the bolts of the pipe clamp from loosening due to vibration.

[0018] 2. The limiting screw sleeve of this utility model is detachable through threaded connection. After unscrewing the screw sleeve, the pin rod will automatically disengage from the pin hole under the elastic force of the spring, at which point the connecting column and the limiting tube can be separated. In the second fixing component, rotating the screw can drive the limiting frame away from the limiting sleeve, release the clamping of the limiting sleeve, and then easily remove the pipe clamp. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a three-dimensional view of a novel type of shock-absorbing ceramic nozzle.

[0021] Figure 2 This is a rear view schematic diagram of a novel vibration-damping ceramic nozzle structure.

[0022] Figure 3 This is a cross-sectional schematic diagram of a novel vibration-damping ceramic nozzle.

[0023] Figure 4 This is an explosion diagram of a novel type of shock-absorbing ceramic nozzle.

[0024] Figure 5This is an exploded cross-sectional view of a novel type of shock-absorbing ceramic nozzle.

[0025] Figure 6 In a novel vibration-damping ceramic nozzle Figure 3 Enlarged diagram of point A.

[0026] In the attached diagram: 1. Orifice plate; 2. First fixing component; 21. Limiting tube; 22. Insertion hole; 23. Mounting hole; 24. Pin; 25. Spring; 26. Limiting screw sleeve; 3. Composite ceramic tube; 4. Connecting column; 5. Refractory ceramic fiber; 6. Pipe clamp; 7. Second fixing component; 71. Limiting sleeve; 72. Limiting frame; 73. Lead screw; 74. First slider; 75. First slide groove; 76. Second slide groove; 77. Second slider. Detailed Implementation

[0027] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example 1 Please see Figure 1-6 This utility model discloses a novel vibration-damping ceramic nozzle, comprising an orifice plate 1, a first fixing component 2 fixedly connected to one side of the orifice plate 1, a composite ceramic tube 3 disposed within the inner cavity of the orifice plate 1, a connecting post 4 fixedly connected to one side of the composite ceramic tube 3, and the other side of the connecting post 4 extending into the inner cavity of the first fixing component 2, the gap between the composite ceramic tube 3 and the orifice plate 1 being filled with refractory ceramic fibers 5, a tube clamp 6 disposed on the outer side of the refractory ceramic fibers 5, and a second fixing component 7 disposed at the top and bottom of the tube clamp 6, the first fixing component 2 including a limiting tube 21 fixedly connected to the surface of the orifice plate 1, the limiting tube 21... The inner cavity of the device has an insertion hole 22, and the inner cavity of the insertion hole 22 has an installation hole 23. The inner cavity of the installation hole 23 is provided with a pin 24. One end of the pin 24 is fixedly connected to a spring 25, and the other end of the spring 25 is fixedly connected to the inner wall of the installation hole 23. The surface of the limiting tube 21 is threadedly connected to a limiting sleeve 26. The second fixing component 7 includes a limiting sleeve 71 sleeved on the top and bottom of the tube clamp 6. The limiting sleeve 71 is slidably connected to the orifice plate 1. The surface of the limiting sleeve 71 is provided with a limiting frame 72. One side of the limiting frame 72 is fixedly connected to a lead screw 73 through a bearing. The lead screw 73 is threadedly connected to the surface of the orifice plate 1.

[0029] Specifically: the orifice plate 1 is a flat plate structure adapted to the installation requirements of the catalytic cracking unit. Its surface has a circular through hole for the installation of the composite ceramic tube 3. A uniform gap is reserved between the inner wall of the through hole and the outer wall of the composite ceramic tube 3 to meet the filling requirements of the refractory ceramic fiber 5. The composite ceramic tube 3 is a tubular structure adapted to the installation of the through hole of the orifice plate 1. One side of it has an integrally formed connecting post 4 adapted to the insertion hole 22 of the limiting tube 21.

[0030] Example 2 Please see Figure 1-6 Based on Embodiment 1, the end of the connecting post 4 away from the composite ceramic tube 3 extends into the inner cavity of the insertion hole 22, and its surface is provided with a pin hole for use with the pin rod 24. One end of the pin rod 24 extends into the inner cavity of the pin hole. One side of the limiting screw sleeve 26 is designed with a flared mouth. The inner sides of the limiting sleeve 71 are respectively provided with grooves for fitting bolts and nuts. One side of the limiting sleeve 71 is fixedly connected to a first slider 74. The back of the orifice plate 1 and the top and bottom of the tube clamp 6 are provided with first sliding grooves 75. The side of the first slider 74 away from the limiting sleeve 71 is slidably connected to the first sliding groove 75. The upper and lower ends of one side of the back of the orifice plate 1 are provided with second sliding grooves 76. The inner cavity of the second sliding groove 76 is slidably connected to a second slider 77. The other side of the second slider 77 is fixedly connected to the limiting frame 72. The end of the screw 73 away from the limiting frame 72 is fixedly connected to a turntable. The surface of the turntable is covered with a rubber sleeve.

[0031] Specifically: The pin hole provides a precise engagement point for the pin 24. One end of the pin 24 extends into the inner cavity of the pin hole, directly achieving physical engagement between the pin 24 and the connecting post 4, preventing the connecting post 4 from detaching from the insertion hole 22 of the limiting tube 21. When the limiting sleeve 26 moves axially to press the pin 24, the inclined surface of the flared end can evenly apply pressure to the pin 24. The groove can accommodate the bolts and nuts used for splicing the pipe clamp 6, preventing the bolts and nuts from being exposed and preventing external factors from causing the bolts to loosen. At the same time, it ensures that the inner wall of the limiting sleeve 71 is completely fitted with the outer wall of the pipe clamp 6, ensuring that the limiting sleeve 71 clamps the pipe clamp 6. The force is evenly distributed, improving the fixing stability of the second fixing component 7. The first slider 74 works in conjunction with the first slide groove 75, allowing the limiting sleeve 71 to slide along the first slide groove 75, thus restricting the movement direction of the limiting sleeve 71. The second slide groove 76 works in conjunction with the second slider 77, allowing the limiting frame 72 to move only in a straight line along the second slide groove 76. When the screw 73 is rotated to drive the limiting frame 72, the limiting frame 72 is prevented from deflecting, ensuring that it accurately applies clamping force to the limiting sleeve 71, improving the fixing accuracy of the second fixing component 7, and preventing the limiting frame 72 from shifting and being damaged. The turntable facilitates the rotation of the screw 73, reducing the difficulty of operation.

[0032] The working principle of this utility model is as follows: First, the composite ceramic tube 3 is inserted into the through hole of the orifice plate 1, and the connecting post 4 on one side of the composite ceramic tube 3 is aligned with the insertion hole 22 of the limiting tube 21 of the first fixing component 2 and inserted. During the insertion process, the connecting post 4 squeezes the pin 24, and the pin 24 compresses the spring 25 and retracts into the mounting hole 23. When the pin hole of the connecting post 4 is aligned with the mounting hole 23, the spring 25 returns to its original position and pushes the pin 24 into the pin hole, realizing the initial snap-fit ​​between the connecting post 4 and the limiting tube 21; then, the limiting screw sleeve 26 is turned to move it axially along the limiting tube 21, further pressing the pin 24 and strengthening the connection. Next, refractory ceramic fiber 5 is filled into the gap between the composite ceramic tube 3 and the orifice plate 1, and the pipe clamp 6 is wrapped around the outside of the refractory ceramic fiber 5 and fixed by bolt splicing; then the second fixing component 2 is moved. The limiting sleeve 71 of the fixed component 7 is fitted onto the top and bottom of the pipe clamp 6 along the first slider 74 and the first slide groove 75. Then, the turntable at one end of the screw 73 is rotated. The screw 73, through its threaded connection with the orifice plate 1, drives the limiting frame 72 to move along the second slider 77 and the second slide groove 76 toward the limiting sleeve 71. The limiting frame 72 presses against the limiting sleeve 71, making the limiting sleeve 71 tightly fit the pipe clamp 6, thus fixing the pipe clamp 6. During use, the refractory ceramic fiber 5 plays a shock-absorbing role, releasing vibration stress. When the composite ceramic tube 3 needs to be repaired or replaced, the turntable is rotated in the opposite direction to move the limiting frame 72 away from the limiting sleeve 71, the pipe clamp 6 is removed, the limiting screw sleeve 26 is unscrewed, and the pin 24 is dislodged from the pin hole under the elasticity of the spring 25, so the composite ceramic tube 3 can be taken out for maintenance or replacement.

[0033] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A novel vibration-damping ceramic nozzle, comprising an orifice plate (1), characterized in that: A first fixing component (2) is fixedly connected to one side of the perforated plate (1). A composite ceramic tube (3) is provided in the inner cavity of the perforated plate (1). A connecting column (4) is fixedly connected to one side of the composite ceramic tube (3). The other side of the connecting column (4) extends into the inner cavity of the first fixing component (2). The gap between the composite ceramic tube (3) and the perforated plate (1) is filled with refractory ceramic fiber (5). A pipe clamp (6) is provided on the outside of the refractory ceramic fiber (5). A second fixing component (7) is provided at the top and bottom of the pipe clamp (6). The first fixing component (2) includes a limiting tube (21) fixedly connected to the surface of the perforated plate (1). The inner cavity of the limiting tube (21) is provided with an insertion hole (22). The inner cavity of the insertion hole (22) is provided with an installation hole (23). The inner cavity of the installation hole (23) is provided with a pin (24). One end of the pin (24) is fixedly connected with a spring (25). The other end of the spring (25) is fixedly connected to the inner wall of the installation hole (23). The surface of the limiting tube (21) is threadedly connected with a limiting screw sleeve (26). The second fixing component (7) includes a limiting sleeve (71) fitted on the top and bottom of the pipe clamp (6). The limiting sleeve (71) is slidably connected to the orifice plate (1). A limiting frame (72) is fitted on the surface of the limiting sleeve (71). A lead screw (73) is fixedly connected to one side of the limiting frame (72) by a bearing. The lead screw (73) is threadedly connected to the surface of the orifice plate (1).

2. The novel vibration-damping ceramic nozzle according to claim 1, characterized in that: The end of the connecting post (4) away from the composite ceramic tube (3) extends into the inner cavity of the insertion hole (22), and its surface is provided with a pin hole for use with the matching pin (24).

3. The novel vibration-damping ceramic nozzle according to claim 2, characterized in that: One end of the pin (24) extends into the inner cavity of the pin hole.

4. The novel vibration-damping ceramic nozzle according to claim 1, characterized in that: The limiting screw sleeve (26) has a flared design on one side.

5. The novel vibration-damping ceramic nozzle according to claim 1, characterized in that: The inner cavity of the limiting sleeve (71) has grooves for fitting bolts and nuts on both sides.

6. The novel vibration-damping ceramic nozzle according to claim 1, characterized in that: The limiting sleeve (71) is fixedly connected to one side of a first slider (74). The back of the perforated plate (1) and the top and bottom of the tube clamp (6) are provided with first grooves (75). The side of the first slider (74) away from the limiting sleeve (71) is slidably connected to the first groove (75).

7. The novel vibration-damping ceramic nozzle according to claim 1, characterized in that: The upper and lower ends of one side of the perforated plate (1) are provided with a second sliding groove (76), and the inner cavity of the second sliding groove (76) is slidably connected to a second slider (77). The other side of the second slider (77) is fixedly connected to the limiting frame (72).

8. The novel vibration-damping ceramic nozzle according to claim 1, characterized in that: The end of the lead screw (73) away from the limiting frame (72) is fixedly connected to a turntable, and the surface of the turntable is covered with a rubber sleeve.

Images