A net format frame wall with phosphogypsum as energy-saving material

Abstract

The application relates to the technical field of frame walls, and discloses a net-format frame wall taking phosphogypsum as an energy-saving material, which comprises a wall body, the wall body is composed of multiple beams and columns, multiple square grooves are arranged on the wall body, and filling blocks are arranged in the square grooves; a grouting mechanism is arranged in the wall body, the grouting mechanism comprises a grouting pipe; a vibrating mechanism is arranged in the square groove; and an exhaust mechanism is arranged in the square groove. Through the combination of the net-format wall body and the filling blocks, the wall body has the structural strength of the concrete frame and the energy-saving characteristics of the phosphogypsum, the filling blocks are highly attached to the wall body, good consistency is maintained, the double functions of the structure and the energy saving are realized, the industrial waste phosphogypsum is consumed to reduce land occupation and pollution, and the environmental protection effect is achieved.

Description

Technical Field

[0001] This invention relates to the field of frame wall technology, and specifically to a grid frame wall using phosphogypsum as an energy-saving material. Background Technology

[0002] In existing building structures, grid-frame wall structures are widely used. Grid-frame walls are a new type of wall system that combines structural stability and spatial flexibility. The core is composed of a concrete grid skeleton, which is an optimization and upgrade of the traditional frame structure. With the increasing demand for environmental protection, energy conservation and structural safety in the construction industry, the resource utilization of industrial waste and the research and development of efficient building structure systems have become important directions. As an industrial waste produced by wet-process phosphoric acid, phosphogypsum has a huge annual discharge. Long-term stockpiling not only occupies a lot of land, but also easily causes environmental pollution. Its resource utilization is imminent. Therefore, existing technologies have begun to use phosphogypsum as an environmentally friendly material and apply it to building structures.

[0003] Existing technologies for the application of phosphogypsum are mostly limited to the production of non-load-bearing blocks or multi-story building wall panels, which have problems such as low strength, poor compatibility with the main structure, and low construction efficiency, making it difficult to meet the comprehensive requirements of low-rise residential buildings for structural performance and energy-saving effects. Summary of the Invention

[0004] The purpose of this invention is to provide a grid-type frame wall using phosphogypsum as an energy-saving material to solve the above-mentioned problems and overcome the defects of the prior art, as detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention provides a grid-type frame wall using phosphogypsum as an energy-saving material, comprising: a wall body composed of multiple horizontal beams and columns; multiple square grooves on the wall body, each groove containing a filling block; the filling block is formed by filling the square grooves with a slurry made from phosphogypsum using a grouting process; a grouting mechanism is provided within the wall body, the grouting mechanism including a grouting pipe embedded in the wall body, the grouting pipe having one inlet and multiple outlets, the multiple outlets of the grouting pipe respectively communicating with the top of the multiple square grooves, the inlet of the grouting pipe being used to inject the slurry; a vibration mechanism is provided within the square grooves for vibrating the slurry within the square grooves during grouting; and an exhaust mechanism is provided within the square grooves for venting the gas inside the square grooves during grouting.

[0007] Preferably, the inlet of the grouting pipe is threadedly connected to a connecting pipe, which is used to connect to the grouting equipment pipeline and can be separated from the inlet of the grouting pipe.

[0008] Preferably, the inner wall of the connecting pipe is connected with multiple perforated rings, each perforated ring having multiple through holes, and the multiple perforated rings are arranged side by side with different installation angles.

[0009] Preferably, a baffle is slidably connected to the top of the wall, and the baffle can move down to block the inlet of the grouting pipe after the connecting pipe is separated from the grouting pipe inlet.

[0010] Preferably, the vibration mechanism includes a base, and multiple pre-embedded bolts are installed on the square groove. The base is installed in the square groove by the multiple pre-embedded bolts. A smooth rod and two vibrating rods are installed on the base. An impeller is rotatably connected to the top of the smooth rod. The impeller is located below the grouting pipe outlet of the square groove. Two levers are connected to the outer wall of the impeller. Vibrating plates are connected to the two smooth rods respectively. The levers contact the vibrating plates when they move.

[0011] Preferably, both the vibrating plate and the vibrating rod are made of elastic material, and the vibrating plate deforms and vibrates when it comes into contact with the lever.

[0012] Preferably, the outer wall of the vibrating rod is connected to a plurality of forks, which are staggered along the axial direction of the vibrating rod.

[0013] Preferably, the exhaust mechanism includes an exhaust pipe embedded in the wall. The exhaust pipe has an air inlet and an exhaust outlet. The air inlet of the exhaust pipe is connected to a square groove, and the exhaust outlet of the exhaust pipe is connected to the external space of the wall.

[0014] Preferably, a telescopic rod is installed inside the exhaust pipe, the bottom end of the telescopic rod is a telescopic end, and a plug is connected to the telescopic end of the telescopic rod. The size of the plug matches the air inlet of the exhaust pipe, and the plug can be inserted into the air inlet of the exhaust pipe after it is moved up.

[0015] The beneficial effects are:

[0016] 1. This grid-type frame wall, using phosphogypsum as an energy-saving material, combines the grid-type wall structure with infill blocks to achieve both the structural strength of a concrete frame and the energy-saving properties of phosphogypsum. The infill blocks are closely fitted to the wall, maintaining good consistency and achieving both structural and energy-saving functions. The combination of phosphogypsum as an infill material and the concrete grid-type wall structure not only consumes industrial waste phosphogypsum to reduce land occupation and pollution, achieving environmental protection, but also enhances the overall structural performance of the wall structure through the combination of the grid-type wall structure and the phosphogypsum infill blocks.

[0017] 2. This grid-type frame wall, using phosphogypsum as an energy-saving material, utilizes a grouting mechanism to simultaneously deliver phosphogypsum slurry to the tops of different square trenches through multiple outlets of the grouting pipe. This enables simultaneous grouting of multiple trenches, significantly improving grouting efficiency. Furthermore, grouting from the top of the trenches allows the slurry to naturally fill the trenches by its own weight, ensuring uniformity and fullness of the filling. The multiple perforated rings within the connecting pipe create multiple turbulences in the slurry through through-holes at different angles, allowing the slurry to be mixed again during its flow within the connecting pipe. This removes lumps and prevents phosphogypsum particles from settling, ensuring a uniform flow pattern of the slurry before it enters the grouting pipe.

[0018] 3. This grid-type frame wall, using phosphogypsum as an energy-saving material, employs a vibration mechanism. During the filling of the square groove, two vibrating rods continuously vibrate to compact the phosphogypsum slurry, thereby increasing the filling density. After the filling block is formed, the bare rod, vibrating rod, and the fork rod above it remain in the filling block as internal reinforcing structures, enhancing the structural strength of the filling block. The exhaust mechanism ensures that the air inside the square groove is compressed to the top during grouting. The air enters the exhaust pipe through the air inlet and is then discharged outside the wall through the exhaust outlet, preventing air from accumulating and forming air bubbles or voids, thus ensuring full filling of the slurry. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the wall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 3 This is a schematic diagram of the grouting mechanism of the present invention;

[0023] Figure 4 This is a schematic diagram of the grouting pipe structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the connecting pipe structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the vibrating mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the impeller structure of the present invention;

[0027] Figure 8 This is a schematic diagram of the exhaust mechanism of the present invention.

[0028] The annotations in the attached figures are explained as follows:

[0029] 1. Wall; 2. Square channel; 3. Infill block;

[0030] 4. Grouting mechanism; 41. Grouting pipe; 42. Connecting pipe; 43. Hole ring; 44. Baffle;

[0031] 5. Vibration mechanism; 51. Base; 52. Embedded bolts; 53. Vibrating rod; 54. Fork rod; 55. Vibrating plate; 56. Smooth rod; 57. Impeller; 58. Actuator rod;

[0032] 6. Exhaust mechanism; 61. Exhaust pipe; 62. Telescopic rod; 63. Plug. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0034] One embodiment of the present invention is as follows:

[0035] Please see Figure 1 - Figure 5 A grid-like frame wall using phosphogypsum as an energy-saving material includes: a wall 1, which is composed of multiple beams and columns, and multiple square grooves 2 on the wall 1, each containing a filler block 3; the filler block 3 is formed by filling the square grooves 2 with a slurry made from phosphogypsum; the wall 1 forms a grid-like skeleton through the beams and columns, and is the main load-bearing structure. The multiple square grooves 2 on the wall 1 serve as filling spaces, allowing the phosphogypsum slurry to be precisely filled to form the filler blocks 3. This combination of the grid-like wall 1 and the filler blocks 3 allows the wall 1 to possess both the structural strength of a concrete frame and the energy efficiency of phosphogypsum. The energy-saving properties of gypsum enable it to achieve both structural and energy-saving functions. When phosphogypsum is used as a filler material in conjunction with the concrete grid wall 1, it can not only consume industrial waste phosphogypsum to reduce land occupation and pollution, thus achieving environmental protection, but also improve the overall structural performance of the wall 1 by combining the grid wall 1 with the phosphogypsum filler blocks 3. The grid wall 1 can also suppress cracks in the phosphogypsum filler blocks 3, reducing damage to the wall 1. At the same time, the lightweight, heat-insulating, and sound-insulating properties of the phosphogypsum filler blocks 3 meet the energy-saving requirements of buildings, and the structure can realize large-span flexible partitions, reduce the amount of foundation engineering, and reduce construction costs.

[0036] The preparation of phosphogypsum slurry requires the pretreatment of industrial waste phosphogypsum to remove impurities such as free phosphoric acid and fluoride. After that, the pH value and strength properties are adjusted by calcination or by adding modifiers such as lime and cement. Then, the pretreated phosphogypsum is mixed with water, retarders, water-reducing agents and other additives according to the formula. The water-cement ratio needs to be controlled according to the grouting fluidity requirements. The retarders and water-reducing agents are added at 0.2% and 1% of the phosphogypsum mass, respectively. Finally, the mixture is thoroughly stirred with a mixing device to form a uniform, lump-free phosphogypsum slurry with a slump that meets the grouting requirements.

[0037] Furthermore, a grouting mechanism 4 is installed within the wall 1. The grouting mechanism 4 includes a grouting pipe 41, which is pre-embedded within the wall 1. The grouting pipe 41 has one inlet and multiple outlets. The multiple outlets of the grouting pipe 41 are respectively connected to the tops of multiple square trenches 2. The inlet of the grouting pipe 41 is used to inject grout. Before the wall 1 is poured, the grouting pipe 41 is pre-embedded in the wall 1. After the wall 1 is poured, when it is necessary to fill the filling blocks 3, the formwork for the filling blocks 3 is erected, and the grouting equipment is connected to the grouting pipe 41 to inject phosphogypsum grout from the grouting pipe 41. The phosphogypsum slurry is injected through the injection pipe 41 and then simultaneously transported to the top of different square trenches 2 through multiple outlets, realizing synchronous grouting of multiple square trenches 2, which greatly improves the grouting efficiency. Furthermore, grouting from the top of the square trenches 2 allows the slurry to naturally fill the square trenches 2 by its own weight, ensuring the uniformity and fullness of the filling. When the phosphogypsum slurry in the square trench 2 is filled, the outlet of the injection pipe 41 at that square trench 2 is blocked. As all square trenches 2 are filled, the entire injection pipe 41 is also filled with slurry. The injection pipe 41 remains in the wall 1 as a component to improve the structural strength of the wall 1.

[0038] In addition, the inlet of the grouting pipe 41 is threadedly connected to a connecting pipe 42, which is used to connect to the grouting equipment pipeline. The connecting pipe 42 can be separated from the inlet of the grouting pipe 41. The threaded connection makes it convenient to connect and disconnect the connecting pipe 42 from the inlet of the grouting pipe 41. The connecting pipe 42 is a universal component, one end of which can be adapted to multiple grouting pipes 41 on the wall 1, and the other end is adapted to the grouting equipment. Whenever the wall 1 needs to be grouted, the connecting pipe 42 is first installed on the grouting pipe 41, and then the connecting pipe 42 is connected to the grouting equipment to carry out the grouting operation. After the grouting is completed, the connecting pipe 42 is separated, which facilitates the subsequent sealing treatment of the inlet of the grouting pipe 41 and improves the flexibility of the construction process.

[0039] In addition, the inner wall of the connecting pipe 42 is connected with multiple perforated rings 43, each with multiple through holes. The multiple perforated rings 43 are arranged side by side at different installation angles. When the slurry passes through the connecting pipe 42, it needs to pass through the through holes of the multiple perforated rings 43. When there are lumps in the slurry, the lumps will be squeezed and crushed into fine particles as they pass through the perforated rings 43, and then pass through the through holes of the perforated rings 43. The multiple perforated rings 43, through the through holes at different angles, create multiple turbulences for the slurry, so that the slurry is mixed again during its flow in the connecting pipe 42. While removing lumps, it also prevents the precipitation of phosphogypsum particles, so that the slurry forms a uniform flow state before entering the grouting pipe 41, ensuring the consistency of the slurry quality injected into the square trench 2 and improving the density and strength of the filler block 3.

[0040] It is worth noting that a baffle 44 is slidably connected to the top of the wall 1. The baffle 44 can move down to block the inlet of the grouting pipe 41 after the connecting pipe 42 is separated from the inlet of the grouting pipe 41. After the connecting pipe 42 is separated, the staff knocks the baffle 44 down, and the baffle 44 moves down to block the inlet of the grouting pipe 41, preventing external debris from entering the grouting pipe 41. Then, the gap formed on the wall 1 at the grouting pipe 41 is sealed with sealing material, completely covering the baffle 44 and the inlet of the grouting pipe 41.

[0041] Based on the above embodiments, another embodiment of the present invention is as follows:

[0042] Please see Figure 2 , Figure 6 , Figure 7A vibration mechanism 5 is installed inside the square trench 2 to vibrate the grout inside the trench 2 during grouting. The vibration mechanism 5 includes a base 51, with multiple pre-embedded bolts 52 installed on the square trench 2. The base 51 is installed inside the square trench 2 via the pre-embedded bolts 52. A smooth rod 56 and two vibrating rods 53 are installed on the base 51. An impeller 57 is rotatably connected to the top of the smooth rod 56. The impeller 57 is located below the outlet of the grouting pipe 41 of the square trench 2. Two levers 58 are connected to the outer wall of the impeller 57. Vibrating plates 55 are connected to the two smooth rods 56 respectively. When the levers 58 move, they contact the vibrating plates 55. Both the vibrating plates 55 and the vibrating rods 53 are made of elastic material. When the vibrating plates 55 contact the levers 58, they deform and generate vibration. The pre-embedded bolts 52 are pre-embedded in the wall 1 and protrude from the inner side of the square trench 2. The vibration mechanism 5 is prefabricated. The vibration mechanism 5 is a... After the wall 1 is poured, the base 51 is fixed to multiple pre-embedded bolts 52 with nuts to ensure that the base 51 does not shift during the vibration process, providing stable support for the entire vibration mechanism 5. The smooth rod 56 provides a pivot point for the impeller 57. The impeller 57 is directly opposite the outlet of the grouting pipe 41. When the phosphogypsum slurry is sprayed out from the outlet of the grouting pipe 41, the phosphogypsum slurry impacts the blades of the impeller 57. The kinetic energy of the slurry flow drives the impeller 57 to rotate around the smooth rod 56. The rotation of the impeller 57 drives the lever 58 to make a circular motion. The lever 58 periodically impacts the vibrating plate 55. The elastic vibrating plate 55 generates high-frequency rebound vibration after being impacted, which in turn drives the two vibrating rods 53 to vibrate synchronously. During the process of filling the square trench 2, the two vibrating rods 53 continuously vibrate to vibrate the phosphogypsum slurry, thereby improving the filling density.

[0043] It is worth mentioning that multiple forks 54 are connected to the outer wall of the vibrating rod 53, and the multiple forks 54 are staggered along the axial direction of the vibrating rod 53. The staggered arrangement of the forks 54 on the vibrating rod 53 can increase the contact area with the slurry. When the vibrating rod 53 vibrates, the forks 54 will form multi-directional disturbances in the slurry, promote the uniform filling of the corner parts of the square groove 2 by the slurry, further improve the density and molding quality of the filling block 3, and after the filling block 3 is formed, the smooth rod 56, the vibrating rod 53 and the forks 54 above it are all left in the filling block 3 as components, as an internal stiffening structure, to enhance the structural strength of the filling block 3.

[0044] Based on the above embodiments, another embodiment of the present invention is as follows:

[0045] Please see Figure 2 , Figure 7 , Figure 8An exhaust mechanism 6 is installed inside the square trench 2 to expel the gas inside the square trench 2 during grouting. The exhaust mechanism 6 includes an exhaust pipe 61, which is embedded in the wall 1. The exhaust pipe 61 has an air inlet and an exhaust outlet. The air inlet of the exhaust pipe 61 is connected to the square trench 2, and the exhaust outlet of the exhaust pipe 61 is connected to the external space of the wall 1. The air inlet of the exhaust pipe 61 is close to the top of the square trench 2. During grouting, the phosphogypsum slurry gradually fills the square trench 2, and the air inside the square trench 2 is squeezed to the top. The air enters the exhaust pipe 61 through the air inlet and is then discharged to the outside of the wall 1 through the exhaust outlet, which avoids the formation of air bubbles or voids due to air retention and ensures that the slurry is fully filled. At the same time, the exhaust process does not affect the flow of the slurry.

[0046] It is worth noting that a telescopic rod 62 is installed inside the exhaust pipe 61. The bottom end of the telescopic rod 62 is the telescopic end, and a plug 63 is connected to the telescopic end of the telescopic rod 62. The size of the plug 63 matches the air inlet of the exhaust pipe 61. After the plug 63 moves upward, it can be embedded in the air inlet of the exhaust pipe 61. When the slurry in the square trench 2 is about to fill to the top and contact the plug 63, the slurry pushes the plug 63 upward, and the telescopic rod 62 retracts accordingly until the plug 63 is embedded in the air inlet of the exhaust pipe 61, automatically blocking the slurry from entering the exhaust pipe 61, achieving the effect of automatically sealing the exhaust pipe 61, and preventing excess slurry from being squeezed out through the exhaust pipe 61 after the square trench 2 is filled, causing slurry overflow and waste.

[0047] Using the above structure, the working principle of this case is as follows: During construction, the horizontal beams and columns of wall 1 are first poured, and the grouting pipe 41, exhaust pipe 61 and pre-embedded bolts 52 are simultaneously embedded. Then, the base 51 of the vibrating mechanism 5 is fixed in the square trench 2 through the pre-embedded bolts 52. Subsequently, the template of the filling block 3 is erected, and the connecting pipe 42 is threadedly connected to the inlet of the grouting pipe 41. The grouting equipment injects the pre-treated and proportioned phosphogypsum slurry into the grouting pipe 41 through the connecting pipe 42. When the slurry flows through the multiple orifice rings 43 in the connecting pipe 42, it is turbulent, mixed, and crushed into lumps. Then, it is simultaneously sent to the top of the square trench 2 through the multiple outlets of the grouting pipe 41. The slurry impacts the impeller 57 in the square trench 2, driving it to rotate. The lever 58 on the impeller 57 periodically strikes the vibrating plate 55 on the smooth rod 56, driving the vibrating rod 53 and the staggered fork rods 54. Vibration compacts the grout. During grouting, air in the square trench 2 is discharged through the exhaust pipe 61. After the grout fills the square trench 2, it pushes the plug 63 upward and the telescopic rod 62 retracts. The plug 63 is embedded in the air inlet of the exhaust pipe 61 to complete automatic sealing. After grouting, the connecting pipe 42 is separated, and the baffle 44 at the top of the wall 1 is lowered to block the inlet of the grouting pipe 41 and seal the gap. The grouting pipe 41, the smooth rod 56, the vibrating rod 53, the fork rod 54 and other components of the vibration mechanism 5 are left in the wall 1 and the filling block 3, finally forming a grid frame wall 1 that has both structural strength and energy-saving characteristics.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A grid-type frame wall using phosphogypsum as an energy-saving material, characterized in that, include: The wall (1) is composed of multiple beams and columns. The wall (1) is provided with multiple square grooves (2) and the square grooves (2) are provided with filling blocks (3). The filling block (3) is formed by making slurry from phosphogypsum and filling it into the square groove (2) using a grouting process; The wall (1) is provided with a grouting mechanism (4), which includes a grouting pipe (41). The grouting pipe (41) is embedded in the wall (1). The grouting pipe (41) has an inlet and multiple outlets. The multiple outlets of the grouting pipe (41) are respectively connected to the top of multiple square grooves (2). The inlet of the grouting pipe (41) is used to inject grout. The square trench (2) is provided with a vibration mechanism (5) for vibrating the grout in the square trench (2) during grouting. The square groove (2) is provided with an exhaust mechanism (6) for discharging the gas inside the square groove (2) during grouting; The vibrating mechanism (5) includes a base (51), a plurality of pre-embedded bolts (52) are installed on the square groove (2), the base (51) is installed in the square groove (2) by the plurality of pre-embedded bolts (52), and a smooth rod (56) and two vibrating rods (53) are installed on the base (51). Among them, the top of the light rod (56) is rotatably connected to an impeller (57), the impeller (57) is located below the outlet of the grouting pipe (41) of the square groove (2), and the outer wall of the impeller (57) is connected to two levers (58). The two vibrating rods (53) are respectively connected to vibrating plates (55), and the levers (58) contact the vibrating plates (55) when moving. The exhaust mechanism (6) includes an exhaust pipe (61) which is embedded in the wall (1).

2. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 1, characterized in that: The inlet of the grouting pipe (41) is threadedly connected to a connecting pipe (42), which is used to connect the grouting equipment pipeline and can be separated from the inlet of the grouting pipe (41).

3. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 2, characterized in that: The inner wall of the connecting pipe (42) is connected to multiple perforated rings (43), and multiple through holes are opened on the perforated rings (43). The multiple perforated rings (43) are arranged side by side and installed at different angles.

4. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 3, characterized in that: The top of the wall (1) is slidably connected to a baffle (44), which can move down to block the inlet of the grouting pipe (41) after the connecting pipe (42) is separated from the inlet of the grouting pipe (41).

5. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 1, characterized in that: Both the vibrating plate (55) and the vibrating rod (53) are made of elastic material. When the vibrating plate (55) comes into contact with the lever (58), it deforms and vibrates.

6. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 5, characterized in that: The outer wall of the vibrating rod (53) is connected to a plurality of forks (54), and the plurality of forks (54) are staggered along the axial direction of the vibrating rod (53).

7. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 1, characterized in that: The exhaust pipe (61) is provided with an air inlet and an exhaust outlet. The air inlet of the exhaust pipe (61) is connected to the square groove (2), and the exhaust outlet of the exhaust pipe (61) is connected to the external space of the wall (1).

8. A grid-type frame wall using phosphogypsum as an energy-saving material according to claim 7, characterized in that: The exhaust pipe (61) is equipped with a telescopic rod (62). The bottom end of the telescopic rod (62) is a telescopic end. The telescopic end of the telescopic rod (62) is connected to a plug (63). The size of the plug (63) matches the air inlet of the exhaust pipe (61). After the plug (63) moves upward, it can be embedded into the air inlet of the exhaust pipe (61).

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