A multi-functional muffler and control system for engineering machinery

Abstract

The application discloses a kind of multifunctional muffler and control system for engineering machinery, it is related to engineering machinery technical field, including cylinder, the mixed chamber is equipped in the cylinder, muffling chamber, transition chamber and filter chamber;The mixed chamber is equipped with two branches, the first perforated pipe and the pipeline are close to the control mechanism of control intake in the mixed chamber end, still leave a cavity in the cylinder with The second perforated pipe and the filter chamber are communicated, and the cavity is equipped with discharge port.The application solves the problem that part of high emission engineering machinery cannot be constructed in special area because it does not meet the latest non-road mobile machinery exhaust smoke regulations, the device is convenient to disassemble and assemble, and the health status of filter device can be monitored in real time.Meanwhile, in some areas with low emission requirements, the muffler can also be controlled by the instrument to execute the noise reduction mode to replace the soot filter device, thereby reducing the use cost.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a multifunctional muffler and its control system for engineering machinery. Background Technology

[0002] With the rapid development of the economy, the demand for construction machinery, as the vanguard of infrastructure construction, has been increasing year by year. As a result, environmental pollution has become increasingly serious, especially air pollution and noise pollution, which are usually caused by the exhaust gas emitted by construction machinery and the noise generated by the exhaust gas. People usually use silencers and purification devices to deal with the above.

[0003] However, existing silencers used in engineering machinery are basically composed of silencer pipes and their internal silencer mechanisms. They cannot effectively treat the particulate matter in the exhaust gas, and the filtration status cannot be monitored. This results in the inability to operate in areas with certain emission standards, failing to meet the emission requirements. Therefore, this invention provides a silencer to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-functional muffler and control system for use with engineering machinery, in order to solve the problem mentioned in the background art that the current mufflers are not effective in treating particulate matter in exhaust gas and cannot cope with different working conditions.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a multi-functional muffler and control system for engineering machinery, comprising: a cylinder, wherein the cylinder is provided with a mixing chamber, a silencing chamber, a transition chamber and a filtering chamber;

[0006] The cylinder is provided with an air inlet for engine exhaust gas at the mixing chamber;

[0007] The filter chamber is equipped with a filter device;

[0008] The mixing chamber has two branches. In one branch, the mixing chamber is connected to the silencing chamber through a first perforated pipe. The silencing chamber has a second perforated pipe that works with the first perforated pipe to form a resonance expansion silencing effect. The second perforated pipe extends into the filtering chamber and penetrates the filtering device, and the extension section is not perforated.

[0009] In another branch, the mixing chamber is connected to the transition chamber via a pipe that passes through the anechoic chamber. The transition chamber is equipped with a monitoring mechanism for monitoring the health status of the filtration chamber, and the transition chamber is connected to the filtration chamber through the filtration device.

[0010] The first perforated pipe and the pipe are provided with a control mechanism for controlling the air intake near the mixing chamber end. The cylinder also has a cavity that communicates with the second perforated pipe and the filter chamber, and the cavity is provided with an exhaust port.

[0011] Preferably, the monitoring mechanism is a pressure sensor.

[0012] Preferably, the control mechanism includes a first valve installed at the air inlet end of the first perforated pipe and a second valve installed at the air inlet end of the pipe;

[0013] The pressure sensor, the first valve, and the second valve are electrically connected to the overall controller, and the overall controller is electrically connected to the display.

[0014] Preferably, a third perforated pipe is installed on the air inlet of the mixing chamber.

[0015] Preferably, an exhaust pipe is installed on the discharge port of the cylinder.

[0016] Preferably, the holes of the first perforated tube and the holes of the second perforated tube are arranged with their axes intersecting but not aligned.

[0017] Preferably, a first end cap is provided at one end of the cylinder located in the mixing chamber, and a second end cap is provided at the other end of the cylinder; a sealing gasket is installed between the second end cap and the cylinder, and the second end cap is detachably connected to the cylinder;

[0018] The cylinder is provided with a first baffle near the first end cap. The first end cap and the first baffle form the mixing chamber. The first perforated pipe and the pipe pass through the first baffle.

[0019] A second baffle is provided on the other side of the first baffle. The first baffle and the second baffle together form the silencing chamber. The second perforated pipe is fixed on the first baffle, and the pipe continues to extend through the second baffle.

[0020] A seat ring is installed on the other side of the second baffle and cooperates with the second baffle to form the transition chamber. The filter device is installed on the seat ring, and the other end of the filter device is installed inside the baffle ring.

[0021] Preferably, the seat ring consists of a first ring and a second ring that is perpendicular to the first ring.

[0022] Preferably, a screw is fixed on the first ring, and a pressure plate is provided on the side of the retaining ring away from the filter device. The screw passes through the retaining ring and the pressure plate and is threadedly connected to the filter device by a nut to limit its position.

[0023] Preferably, the filter device consists of a core, a heat-resistant shell enclosing the core, and a handle fixed to the heat-resistant shell.

[0024] Preferably, the screw is provided in several groups on the first ring.

[0025] A control system for a multi-functional muffler for use with construction machinery, comprising an S1 silencing mode and an S2 filtering mode.

[0026] Select the silencer mode according to the construction area. For areas with no emission requirements, select the S1 silencer mode, and for areas with emission requirements, select the S2 filter mode.

[0027] S1 Silencing Mode: When entering the corresponding area, the first valve is opened and the second valve is closed by the whole machine controller, and the exhaust gas enters the silencing chamber for silencing treatment before being discharged.

[0028] S2 filtration mode: After entering the corresponding area, the first valve is closed and the second valve is opened by the whole machine controller. The exhaust gas enters the transition chamber for blockage self-check and then enters the filtration chamber for filtration and discharge.

[0029] The blockage self-test results are fed back to the whole machine controller via the pressure sensor, calculated, and then displayed synchronously on the display; and the whole machine controller adjusts the mode accordingly.

[0030] Preferably, in the S2 filtering mode, a threshold A and a threshold B less than threshold A are set respectively;

[0031] After the second valve is opened, the exhaust gas enters the transition chamber and the back pressure of the filter device is detected by the pressure sensor. The detected value is sent to the whole machine controller for comparison with the threshold A.

[0032] The filter continues to operate when the back pressure is less than the threshold A, and the blockage percentage data is displayed synchronously on the screen.

[0033] When the back pressure of the filter device is greater than the threshold A, the S1 silence mode is activated, and the display shows the blockage alarm information simultaneously.

[0034] Preferably, after cleaning and reinstalling the filter device, the display synchronously shows the blockage alarm information. Then, the S2 filter mode is selected, and the back pressure of the filter device is detected for several minutes by the pressure sensor. The detected value is sent to the whole machine controller for comparison with the threshold B.

[0035] When the back pressure of the filter device is greater than the threshold B, the blockage alarm information will continue to be displayed on the screen;

[0036] When the back pressure of the filter is less than the threshold B, the blockage alarm information will be deactivated on the display.

[0037] Preferably, the pressure sensor detects the back pressure of the filter device for 3 minutes.

[0038] Preferably, the formula for calculating the percentage of congestion data displayed on the monitor is as follows:

[0039] Preferably, the pressure value of threshold B is 1 kPa lower than the pressure value of threshold A.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] This invention addresses the problem that some high-emission construction machinery cannot operate in special areas due to non-road mobile machinery exhaust smoke opacity regulations. This device is easy to install and disassemble and can monitor the health status of the filter in real time. Furthermore, in areas with less stringent emission requirements, it can also replace the carbon smoke filter by controlling the silencer to operate in silencing mode via an instrument, thus reducing operating costs. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of a multi-functional muffler for use with engineering machinery according to the present invention;

[0043] Figure 2 This is a schematic diagram of the internal structure of a multi-functional muffler for use with engineering machinery according to the present invention;

[0044] Figure 3 This is a schematic diagram of a multi-functional muffler seat ring structure for use with engineering machinery according to the present invention;

[0045] Figure 4 This is a schematic diagram of the structure of a multi-functional muffler filter device for use with engineering machinery according to the present invention;

[0046] Figure 5 This is a schematic diagram of the control structure of a multi-functional muffler controller for use with engineering machinery according to the present invention;

[0047] Figure 6 This is a schematic diagram of the control system for a multi-functional muffler used in engineering machinery according to the present invention.

[0048] In the diagram: 1. Third perforated tube; 2. First end cap; 3. First baffle; 4. First perforated tube; 5. Pressure sensor; 6. Seat ring; 61. First ring; 62. Second ring; 7. Filter device; 71. Handle; 72. Core; 73. Heat-resistant shell; 8. Retaining ring; 9. Exhaust pipe; 10. Pressure plate; 11. Screw; 12. Second end cap; 13. Sealing gasket; 14. Second perforated tube; 15. Second baffle; 16. Second baffle; 17. Cylinder; 18. First valve; 19. Second valve; 20. Controller; 21. Display. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Example

[0051] Please see Figures 1-5 A multi-functional silencer for use with engineering machinery includes a cylinder 17 and a mixing chamber, a silencing chamber, a transition chamber, and a filtering chamber disposed within the cylinder 17.

[0052] like Figure 1 As shown, the cylinder 17 is provided with an air inlet for engine exhaust gas in the mixing chamber, and a third perforated pipe 1 is installed on the air inlet to communicate with the engine exhaust outlet; a first end cap 2 is provided at one end of the cylinder 17 near the air inlet, and a second end cap 12 is provided at the other end of the cylinder 17; a sealing gasket 13 is installed between the second end cap 12 and the cylinder 17, and the second end cap 12 is installed on the cylinder 17 by bolts;

[0053] A first baffle 3 is provided inside the cylinder 17 near the first end cap 2, and the first end cap 2 and the first baffle 3 together form a mixing chamber; a second baffle 15 is provided on the other side of the first baffle 3, and the first baffle 3 and the second baffle 15 together form a silencing chamber; a seat ring 6 is installed on the other side of the second baffle 15 and cooperates with the second baffle 15 to form a transition chamber; the filter chamber is formed by the seat ring 6 and the baffle ring 8, and a filter device 7 is installed between the seat ring 6 and the baffle ring 8. The cylinder 17 on the other side of the baffle ring 8 also has a cavity, and an exhaust pipe 9 is installed on the discharge port of this cavity.

[0054] Among them, such as Figure 4 As shown, the filter device 7 consists of a core 72, a heat-resistant metal shell 73 enclosing the core 72, and a handle 71 fixed to the heat-resistant shell 73 for easy disassembly and cleaning. Figure 3 As shown, the seat ring 6 is composed of a first ring 61 and a second ring 62 that is perpendicular to the first ring 61. Several sets of screws 11 are fixed on the first ring 61. In this embodiment, three sets are used, but it is not limited to three sets. Those skilled in the art can select according to actual needs. The inner diameter of the retaining ring 8 is smaller than the outer diameter of the heat-resistant shell 73 and is fixed on the cylinder 17. A pressure plate 10 is provided on the side away from the filter device 7 to limit the filter device 7. When installing the filter device 7, the screws 11 pass through the retaining ring 8 and the pressure plate 10 and are connected to the filter device 7 by the nut thread. The filtered exhaust gas is discharged to another chamber through the hollow retaining ring 8.

[0055] During the discharge process, the mixing chamber is equipped with two discharge branches: a noise reduction branch and a filtration branch.

[0056] The silencing branch connects the mixing chamber to the silencing chamber via a first perforated pipe 4 that passes through a first baffle 3. A second perforated pipe 14, fixed to the first baffle 3, is installed within the silencing chamber. This second perforated pipe 14 works in conjunction with the first perforated pipe 4 to form a resonant expansion silencing effect. Specifically, the holes in the first and second perforated pipes 14 are arranged with their axes intersecting but not aligned, to prevent the two pipes from blowing against each other and affecting the silencing effect. The second perforated pipe 14 extends into the filter chamber, passes through the filter device 7, and discharges the silencing exhaust gas through a cavity with an outlet. The extension section of the second perforated pipe 14 within the filter device 7 is not perforated.

[0057] The filtration branch, the mixing chamber is connected to the transition chamber through the first baffle 3 and the second baffle 15 via the pipe 16. The transition chamber is equipped with a pressure sensor 5 for monitoring the health status of the filtration chamber. The transition chamber is connected to the filtration chamber and is filtered by the filtration device 7. The filtered exhaust gas enters the chamber with the exhaust port and is discharged.

[0058] Combination Figure 2 and Figure 5 As shown, in the opening and closing control of the above two branches, a first valve 18 is installed at the air inlet end of the first perforated pipe 4 and a second valve 19 is installed at the air inlet end of the pipe 16 for controlling the air intake of the two branches. The pressure sensor 5, the first valve 18 and the second valve 19 are electrically connected to the whole machine controller 20, and the whole machine controller 20 is electrically connected to the display 21. The pressure sensor 5 is used to detect the degree of blockage of the filter device 7, and the status of the two branches and the blockage status are displayed on the display 21.

[0059] Please see Figure 6 A control system for a multi-functional muffler for use with engineering machinery, based on the aforementioned multi-functional muffler for use with engineering machinery, the system is configured with an S1 silencing mode and an S2 filtering mode.

[0060] Select the silencer mode according to the regulations of the construction area. For areas with no emission requirements, select the S1 silencer mode, and for areas with emission requirements, select the S2 filter mode.

[0061] S1 Silencing Mode: When entering the corresponding area, the first valve 18 is opened and the second valve 19 is closed by the whole machine controller 20. The exhaust gas enters the silencing chamber for silencing treatment and is then discharged.

[0062] S2 Filtration Mode: After entering the corresponding area, the first valve 18 is closed and the second valve 19 is opened by the whole machine controller 20. The exhaust gas enters the transition chamber and the back pressure of the filter device 7 is detected by the pressure sensor 5. The whole machine controller 20 presets a threshold A and a threshold B that is 1 kPa lower than the threshold A. The threshold B is used to clear the alarm after the filter device 7 is cleaned and maintained. The threshold A depends on the engine model and emission volume. Those skilled in the art need to select and set it according to the actual working conditions. It will not be described in detail here.

[0063] The pressure sensor 5 detects a value and sends it to the whole machine controller 20 for comparison with the threshold A; when the back pressure of the filter device 7 is less than the threshold A, it continues to operate and displays the blockage percentage data synchronously on the display 21; finally, it enters the filter chamber for filtration and discharge.

[0064] The formula for calculating the blocking percentage data displayed synchronously on monitor 21 is as follows:

[0065]

[0066] P is the pressure value monitored in real time by the pressure sensor, P0 is the initial back pressure value calibrated by the initial filter device, and n is the calibrated threshold A (maximum back pressure value).

[0067] When the back pressure of the filter device 7 is greater than the threshold A, the S1 silence mode is executed and the display 21 displays the blockage alarm information simultaneously. After cleaning and reinstalling the filter device 7, the S2 filter mode is executed again. The back pressure of the filter device 7 is detected for 3 minutes by the pressure sensor 5, and the detected value is sent to the whole machine controller 20 for comparison with the threshold B.

[0068] When the back pressure of filter device 7 is less than the threshold B, the blockage alarm information will be de-displayed on display 21.

[0069] The display 21 synchronously displays the blockage alarm information. When the back pressure of the filter device 7 is greater than the threshold B, the blockage alarm information continues to be displayed on the display 21. At this time, the filter device 7 needs to be cleaned or replaced again.

[0070] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A multi-functional muffler for use with engineering machinery, characterized in that, include: The cylindrical body (17) is provided with a mixing chamber, a silencing chamber, a transition chamber and a filtering chamber. The cylinder (17) is provided with an air inlet for engine exhaust gas at the mixing chamber; The filter chamber is equipped with a filter device (7); The mixing chamber is provided with two branches. In one branch, the mixing chamber is connected to the silencing chamber through a first perforated pipe (4). The silencing chamber is provided with a second perforated pipe (14) which works with the first perforated pipe (4) to form a resonance expansion silencing effect. The second perforated pipe (14) extends into the filtering chamber and penetrates the filtering device (7), and the extension section is not perforated. In another branch, the mixing chamber is connected to the transition chamber through the silencing chamber via a pipe (16). The transition chamber is equipped with a monitoring mechanism for monitoring the health status of the filtration chamber, and the transition chamber is connected to the filtration chamber through the filtration device (7). Among them, the first perforated pipe (4) and the pipe (16) are provided with a control mechanism for controlling the air intake near the end of the mixing chamber, and a cavity is left in the cylinder (17) that is connected to the second perforated pipe (14) and the filter chamber, and the cavity is provided with an exhaust port.

2. The multi-functional muffler for engineering machinery according to claim 1, characterized in that: The monitoring device is a pressure sensor (5).

3. The multi-functional muffler for engineering machinery according to claim 2, characterized in that: The control mechanism includes a first valve (18) installed at the air inlet end of the first perforated pipe (4) and a second valve (19) installed at the air inlet end of the pipe (16); The pressure sensor (5), the first valve (18) and the second valve (19) are electrically connected to the whole machine controller (20), and the whole machine controller (20) is electrically connected to the display (21).

4. The multi-functional muffler for engineering machinery according to claim 3, characterized in that: A third perforated pipe (1) is installed on the air inlet of the mixing chamber.

5. The multi-functional muffler for engineering machinery according to claim 4, characterized in that: An exhaust pipe (9) is installed on the discharge port of the cylinder (17).

6. The multi-functional muffler for engineering machinery according to claim 5, characterized in that: The holes of the first perforated tube (4) and the holes of the second perforated tube (14) are arranged with their axes intersecting but not aligned.

7. The multi-functional muffler for engineering machinery according to any one of claims 1-6, characterized in that: One end of the cylinder (17) is provided with a first end cap (2) located in the mixing chamber, and the other end of the cylinder (17) is provided with a second end cap (12); a sealing gasket (13) is installed between the second end cap (12) and the cylinder (17), and the second end cap (12) is detachably connected to the cylinder (17); The cylinder (17) is provided with a first baffle (3) near the first end cap (2). The first end cap (2) and the first baffle (3) form the mixing chamber. The first perforated pipe (4) and the pipe (16) pass through the first baffle (3). A second baffle (15) is provided on the other side of the first baffle (3). The first baffle (3) and the second baffle (15) form the silencing chamber. The second perforated pipe (14) is fixed on the first baffle (3). The pipe (16) continues to extend through the second baffle (15). A seat ring (6) is installed on the other side of the second baffle (15) and cooperates with the second baffle (15) to form the transition chamber. The filter device (7) is installed on the seat ring (6) and the other end of the filter device (7) is installed inside the baffle ring (8).

8. The multi-functional muffler for engineering machinery according to claim 7, characterized in that: The seat ring (6) consists of a first ring (61) and a second ring (62) that is perpendicular to the first ring (61).

9. The multi-functional muffler for engineering machinery according to claim 8, characterized in that: A screw (11) is fixed on the first ring (61), and a pressure plate (10) is provided on the side of the retaining ring (8) away from the filter device (7). The screw (11) passes through the retaining ring (8) and the pressure plate (10) and is threadedly connected to the filter device (7) by a nut to limit its position.

10. The multi-functional muffler for engineering machinery according to claim 9, characterized in that: The filter device (7) consists of a core (72), a heat-resistant shell (73) wrapped around the core (72), and a handle (71) fixed to the heat-resistant shell (73).

11. The multi-functional muffler for engineering machinery according to claim 9, characterized in that: The screw (11) has several sets on the first ring (61).

12. A control system for a multi-functional muffler used with engineering machinery, as described in any one of claims 1-11, characterized in that, Includes S1 silence mode and S2 filter mode; Select the silencer mode according to the construction area. For areas with no emission requirements, select the S1 silencer mode, and for areas with emission requirements, select the S2 filter mode. S1 Silencing Mode: Upon entering the corresponding area, the first valve (18) is opened by the whole machine controller (20), and the second valve (19) is closed. The exhaust gas enters the silencing chamber for silencing treatment and is then discharged. S2 filtration mode: After entering the corresponding area, the first valve (18) is closed and the second valve (19) is opened by the whole machine controller (20). The exhaust gas enters the transition chamber for blockage self-check and then enters the filter chamber for filtration and discharge. Among them, the blockage self-test result is fed back to the whole machine controller (20) through the pressure sensor (5) for calculation and then displayed synchronously on the display (21); and the whole machine controller (20) adjusts the mode.

13. The control system for the multi-functional muffler used in engineering machinery according to claim 12, characterized in that: In the S2 filtering mode, a threshold A and a threshold B that are less than threshold A are set respectively; After the second valve (19) is opened, the exhaust gas enters the transition chamber and the back pressure of the filter device (7) is detected by the pressure sensor (5). The detected value is sent to the whole machine controller (20) for comparison with the threshold A. When the back pressure of the filter device (7) is less than the threshold A, it continues to operate and displays the blockage percentage data synchronously on the display (21); When the back pressure of the filter device (7) is greater than the threshold A, the S1 silencing mode is executed, and the display (21) displays the blockage alarm information simultaneously.

14. The control system for the multi-functional muffler used in engineering machinery according to claim 13, characterized in that: The display (21) synchronously displays the blockage alarm information. After cleaning and reinstalling the filter device (7), select the S2 filter mode. The back pressure of the filter device (7) is detected for several minutes by the pressure sensor (5), and the detected value is sent to the whole machine controller (20) for comparison with the threshold B. When the back pressure of the filter device (7) is greater than the threshold B, the blockage alarm information continues to be displayed on the display (21); When the back pressure of the filter device (7) is less than the threshold B, the blockage alarm information is de-displayed on the display (21).

15. The control system for the multi-functional muffler used in engineering machinery according to claim 14, characterized in that: The pressure sensor (5) detects the back pressure of the filter device (7) for 3 minutes.

16. The control system for the multi-functional muffler used in engineering machinery according to claim 15, characterized in that: The formula for calculating the percentage of congestion displayed synchronously on the monitor (21) is as follows:

17. The control system for a multi-functional muffler used in engineering machinery according to any one of claims 13-16, characterized in that: The pressure value of threshold B is 1 kPa lower than the pressure value of threshold A.

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