Engineering machinery post-processing device

Abstract

The utility model discloses an engineering machinery post-processing device, which relates to the technical field of engineering silencers, and comprises an outer cylinder body with a hollow cylindrical structure, a gas inlet pipe and a gas outlet pipe are respectively arranged on two sides of the outer cylinder body, a flange is arranged at the port of the gas inlet pipe and is used for being connected with a vehicle exhaust emission position, an inner cylinder body is arranged in the outer cylinder body, and a gas outlet pipe is arranged in the inner cylinder body. Partition discs are arranged on the two sides of the inner cylinder correspondingly, the partition disc close to the side of the air inlet pipe and the side wall, connected with the air inlet pipe, of the interior of the outer cylinder form a first outer cavity, the partition disc close to the side of the air outlet pipe and the side wall, connected with the air outlet pipe, of the interior of the outer cylinder form a second outer cavity, and a control unit used for replacing a carrier is arranged in the inner cylinder. The purposes of silencing and reducing exhaust emission can be achieved, meanwhile, a carrier in the device can be conveniently replaced through the design of the control unit, and therefore the use cost of the device is reduced, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mufflers, in particular to a post-processing device for engineering machinery. Background Art

[0002] The vehicle exhaust system is mainly responsible for controlling the exhaust gas emissions, exhaust back pressure and exhaust noise of the whole vehicle, ensuring that the vehicle emissions meet various application standards. At present, the existing engine exhaust muffler can achieve the purpose of silencer, but the exhaust gas emissions cannot be effectively treated. This device can convert carbon monoxide and hydrocarbons in the exhaust gas into harmless CO2 and H2O, and convert NO into NO2, thereby reducing the exhaust gas emissions of the vehicle. Utility Model Content

[0003] The purpose of the utility model is to provide a post-processing device for engineering machinery, which can achieve the purpose of silencing and reducing exhaust emissions. At the same time, through the design of the control unit, the carrier in the device can be easily replaced, thereby reducing the use cost of the device and improving the practicability of the device.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: an engineering machinery post-processing device, comprising an outer cylinder body with a hollow cylindrical structure, an air inlet pipe and an air outlet pipe are respectively arranged on both sides of the outer cylinder body, and a flange is installed at the port of the air inlet pipe for connecting with the exhaust gas discharge of the vehicle;

[0005] An inner cylinder is provided inside the outer cylinder, and partition plates are provided on both sides of the inner cylinder, the partition plate close to the air inlet pipe and the inner side wall of the outer cylinder connected to the air inlet pipe form a first outer chamber, and the partition plate close to the air outlet pipe and the inner side wall of the outer cylinder connected to the air outlet pipe form a second outer chamber;

[0006] A control unit for replacing the carrier is arranged inside the inner cylinder.

[0007] Furthermore, a portion of the surface of the air intake pipe extending into the interior of the outer cylinder is provided with a plurality of air holes, and the air flow enters the first outer chamber through the air holes on the air intake pipe to achieve a first expansion, thereby eliminating some low and medium frequency noise. A plurality of air holes are provided on the partition plate adjacent to the air intake pipe, so that the air flow passing through the first outer chamber enters the inner chamber from the air holes.

[0008] Furthermore, the control unit includes a carrier placement piece installed inside the inner cavity, the carrier placement piece is a hollow cylindrical structure, a threaded ring is installed at the coaxial center of the carrier placement piece, a gap is left between the outer wall of the threaded ring and the inner wall of the carrier placement piece for placing the carrier, a threaded rod is provided inside the threaded ring and threadedly connected to the threaded rod, the bottom of the threaded rod extends to the outside of the outer cylinder and is connected to the control knob, and the carrier placement piece can be lifted and lowered under the action of the control knob.

[0009] Furthermore, a sealing gasket is installed at the bottom of the carrier placement piece near the control knob side. When the carrier placement piece is lowered to the lowest end, the sealing gasket can fit tightly with the inner cylinder to improve the sealing effect of the inner cylinder. The top end of the threaded rod is connected to the double-layer sealing plug through a spring rod. Under the action of the spring rod, the lower layer of the double-layer sealing plug can be embedded into the interior of the carrier placement piece under the action of elasticity. At the same time, when the carrier placement piece is lowered to the lowest end, the upper layer of the double-layer sealing plug can seal the inner cylinder.

[0010] Furthermore, a through hole is provided at the outer cylinder at the top of the carrier placement piece for replacing the carrier inside the carrier placement piece after it rises, and a removable top cover is installed at the through hole to ensure the overall sealing of the outer cylinder under normal working conditions.

[0011] Furthermore, the outer wall of the carrier placement piece is distributed with multiple pores, and the airflow entering the inner cavity combines with the carrier through the pores on the carrier placement piece to achieve exhaust gas oxidation, remove carbon monoxide and hydrocarbons, convert them into harmless CO2 and H2O, and convert NO into NO2.

[0012] Furthermore, a perforated tube with multiple air holes is provided at the partition plate near the side of the outlet pipe, and a third outer chamber is provided on the side of the perforated tube near the outlet pipe. The airflow treated by the carrier enters the second outer chamber through the air holes on the partition plate for secondary expansion. The expanded airflow flows into the perforated tube, and then the perforated tube introduces the airflow into the third outer chamber to realize the third expansion, thereby achieving the purpose of silencing. Finally, the airflow changes direction and is discharged from the silencer through the outlet pipe.

[0013] Furthermore, the inner wall of the inner cylinder and the inner wall of the outer cylinder are both covered with heat insulation cotton to improve the overall heat insulation effect of the device.

[0014] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0015] 1. After being used for a long time, the internal oxidation coating of the traditional muffler is prone to aging, resulting in a decrease in exhaust gas treatment capacity. However, this device can replace the carrier through the design of the control unit, reducing the cost of use and improving the efficiency of use.

[0016] 2. This device combines silencer with exhaust gas treatment, effectively utilizes the internal structure of the cylinder, realizes multiple expansion treatments of the airflow, effectively reduces the emission of harmful substances and medium and low frequency noise in the exhaust gas, and also has a heat insulation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structural installation of the partition plate, the inner cylinder and the orifice tube in the utility model;

[0020] Figure 3 It is a cross-sectional view of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the control unit of the utility model.

[0022] In the figure: 1. outer cylinder; 2. air inlet pipe; 3. air outlet pipe; 4. flange; 5. inner cylinder; 6. partition plate; 7. first outer chamber; 8. second outer chamber; 9. control unit; 91. carrier placement piece; 92. threaded ring; 93. threaded rod; 94. control knob; 95. spring rod; 96. double-layer sealing plug; 10. top cover; 11. hole tube; 12. third outer chamber. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figures 1 to 4 The utility model provides a technical solution: a post-processing device for engineering machinery, comprising an outer cylinder 1 with a hollow cylindrical structure, an air inlet pipe 2 and an air outlet pipe 3 are respectively arranged on both sides of the outer cylinder 1, and a flange 4 is installed at the port of the air inlet pipe 2 for connecting with the exhaust gas discharge of the vehicle;

[0025] An inner cylinder 5 is provided inside the outer cylinder 1, and partition plates 6 are provided on both sides of the inner cylinder 5. The partition plate 6 near the air inlet pipe 2 and the inner side wall of the outer cylinder 1 connected to the air inlet pipe 2 form a first outer chamber 7, and the partition plate 6 near the air outlet pipe 3 and the inner side wall of the outer cylinder 1 connected to the air outlet pipe 3 form a second outer chamber 8;

[0026] A control unit 9 for replacing the carrier is disposed inside the inner cylinder 5 .

[0027] Furthermore, a portion of the surface of the air intake pipe 2 extending into the interior of the outer cylinder 1 is provided with a plurality of air holes, and the air flow enters the first outer chamber 7 through the air holes on the air intake pipe 2 to achieve a first expansion, thereby eliminating some low- and medium-frequency noises. A plurality of air holes are provided on the partition plate 6 adjacent to the air intake pipe 2, so that the air flow passing through the first outer chamber 7 enters the inner cavity from the air holes.

[0028] Furthermore, the control unit 9 includes a carrier placement piece 91 installed inside the inner cavity, and the carrier placement piece 91 is a hollow cylindrical structure. A threaded ring 92 is installed at the coaxial center of the carrier placement piece 91. A gap is left between the outer wall of the threaded ring 92 and the inner wall of the carrier placement piece 91 for placing the carrier. A threaded rod 93 is threadedly connected to the threaded ring 92. The bottom of the threaded rod 93 extends to the outside of the outer cylinder 1 and is connected to the control knob 94. Under the action of the control knob 94, the carrier placement piece 91 can have a lifting function.

[0029] Furthermore, a sealing gasket is installed at the bottom of the carrier placement piece 91 near the control knob 94. When the carrier placement piece 91 is lowered to the lowest end, it can fit tightly with the inner cylinder 5 through the sealing gasket, thereby improving the sealing effect of the inner cylinder 5. The top end of the threaded rod 93 is connected to the double-layer sealing plug 96 through the spring rod 95. Under the action of the spring rod 95, the lower layer of the double-layer sealing plug 96 can be embedded into the interior of the carrier placement piece 91 under the action of elasticity. At the same time, when the carrier placement piece 91 is lowered to the lowest end, the upper layer of the double-layer sealing plug 96 can seal the inner cylinder 5.

[0030] Furthermore, a through hole is opened at the outer cylinder 1 located at the top of the carrier placement piece 91, which is used to replace the carrier inside it after the carrier placement piece 91 rises. A removable top cover 10 is installed at the position of the through hole to ensure the overall sealing of the outer cylinder 1 under normal working conditions.

[0031] Furthermore, the outer wall of the carrier placement piece 91 is distributed with a plurality of pores, and the airflow entering the inner cavity combines with the carrier through the pores on the carrier placement piece 91 to achieve exhaust gas oxidation, remove carbon monoxide and hydrocarbons, convert them into harmless CO2 and H2O, and convert NO into NO2.

[0032] Furthermore, a perforated tube 11 with a plurality of air holes is provided at the partition plate 6 near the side of the outlet pipe 3, and a third outer chamber 12 is provided at the side of the perforated tube 11 near the outlet pipe 3. The airflow treated by the carrier enters the second outer chamber 8 through the air holes on the partition plate 6 for secondary expansion, and the expanded airflow enters the perforated tube 11, and then the perforated tube 11 introduces the airflow into the third outer chamber 12 to realize the third expansion and achieve the purpose of silencing. Finally, the airflow changes direction and is discharged from the silencer through the outlet pipe 3.

[0033] Furthermore, the inner wall of the inner cylinder 5 and the inner wall of the outer cylinder 1 are both covered with heat insulation cotton to improve the overall heat insulation effect of the device.

[0034] Working principle: the airflow enters the first outer chamber 7 through the air holes on the air intake pipe 2 to achieve the first expansion, eliminating some low- and medium-frequency noises. A plurality of air holes are distributed on the partition plate 6 adjacent to the air intake pipe 2, so that the airflow passing through the first outer chamber 7 enters the inner cavity from the air holes. A plurality of air holes are distributed on the outer wall of the carrier placement piece 91. The airflow entering the inner cavity combines with the carrier through the air holes on the carrier placement piece 91 to achieve exhaust gas oxidation, remove carbon monoxide and hydrocarbons, convert them into harmless CO2 and H2O, and convert NO into NO2. The airflow treated by the carrier enters the second outer chamber 8 through the air holes on the partition plate 6 for secondary expansion. The expanded airflow enters the orifice tube 11, and then the orifice tube 11 introduces the airflow into the third outer chamber 12 to achieve the third expansion and achieve the purpose of silencing. Finally, the airflow changes direction and is discharged from the muffler through the outlet pipe 3.

[0035] In the case that the carrier has been used for a long time and is old, by removing the top cover 10 and rotating the control knob 94, the carrier placement piece 91 with the carrier can be pushed out of the outer cylinder 1 by means of a mechanical structure, so as to facilitate manual replacement. At the same time, when the carrier placement piece 91 is lowered to the lowest end, it can fit tightly with the inner cylinder 5 through the sealing gasket, and the top end of the threaded rod 93 can, under the action of the spring rod 95, enable the lower layer of the double-layer sealing plug 96 to be elastically embedded into the interior of the carrier placement piece 91. At the same time, when the carrier placement piece 91 is lowered to the lowest end, the upper layer of the double-layer sealing plug 96 seals the inner cylinder 5, thereby improving the sealing effect of the inner cylinder 5.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A post-treatment device for an engineering machinery, comprising an outer cylinder (1) having a hollow cylindrical structure, an air inlet pipe (2) and an air outlet pipe (3) being respectively arranged on both sides of the outer cylinder (1), and a flange (4) being installed at the end of the air inlet pipe (2) for connecting to the exhaust gas discharge of a vehicle; An inner cylinder (5) is arranged inside the outer cylinder (1), and partition plates (6) are respectively arranged on both sides of the inner cylinder (5), the partition plate (6) close to the air inlet pipe (2) and the inner side wall of the outer cylinder (1) connected to the air inlet pipe (2) form a first outer chamber (7), and the partition plate (6) close to the air outlet pipe (3) and the inner side wall of the outer cylinder (1) connected to the air outlet pipe (3) form a second outer chamber (8); A control unit (9) for replacing the carrier is provided inside the inner cylinder (5).

2. The post-processing device for construction machinery according to claim 1, characterized in that: A portion of the surface of the air inlet pipe (2) extending into the interior of the outer cylinder (1) is provided with a plurality of air holes, and a partition plate (6) adjacent to the air inlet pipe (2) is provided with a plurality of air holes.

3. The post-processing device for construction machinery according to claim 1, characterized in that: The control unit (9) comprises a carrier placement member (91) installed inside the inner cavity, the carrier placement member (91) is in the form of a hollow cylindrical structure, a threaded ring (92) is installed at the coaxial center of the carrier placement member (91), a gap is left between the outer wall of the threaded ring (92) and the inner wall of the carrier placement member (91) for placing the carrier, a threaded rod (93) is provided inside the threaded ring (92) and is threadedly connected thereto, and the bottom of the threaded rod (93) extends to the outside of the outer cylinder (1) and is connected to a control knob (94).

4. The post-processing device for construction machinery according to claim 3, characterized in that: A sealing gasket is installed at the bottom of the carrier placement piece (91) on the side close to the control knob (94), and the top end of the threaded rod (93) is connected to the double-layer sealing plug (96) via a spring rod (95).

5. The post-processing device for construction machinery according to claim 3, characterized in that: A through hole is provided at the outer cylinder (1) located at the top of the carrier placement piece (91), and a detachable top cover (10) is installed at the position of the through hole.

6. The post-processing device for construction machinery according to claim 3, characterized in that: The outer wall of the carrier placement piece (91) is distributed with a plurality of air holes.

7. The post-processing device for construction machinery according to claim 1, characterized in that: A perforated tube (11) having a plurality of air holes distributed thereon is provided on the partition plate (6) on one side close to the air outlet pipe (3), and a third outer chamber (12) is provided on one side of the perforated tube (11) close to the air outlet pipe (3).

8. The post-processing device for construction machinery according to claim 1, characterized in that: The inner wall of the inner cylinder (5) and the inner wall of the outer cylinder (1) are both covered with heat insulation cotton.

Images