Composite silencer

Abstract

The utility model provides a composite muffler, including exhaust pipe group, connecting member, spouting cylinder group, resistive muffler, exhaust pipe group through connecting member intercommunication with spouting cylinder group, spouting cylinder group is provided the inlet side of resistive muffler, the exhaust pipe group is provided with a plurality of groups, spouting cylinder group is provided with a plurality of groups, the spouting cylinder group is provided with a plurality of groups, the spouting cylinder group is provided with a plurality of groups, the spouting cylinder group is provided with a plurality of groups, and the resistive muffler is provided with a plurality of groups. Each injection cylinder group is provided with a large-hole throttling pressure-reducing injection cylinder and / or a small-hole injection cylinder, and a single injection cylinder group is at least connected with one exhaust pipe group; a plurality of injection barrel sets are connected with one resistive silencer, the silencing capacity of the resistive silencer is superposed, and the total silencing capacity of 35-60 dBA can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust venting mufflers, in particular to a composite muffler which can be connected to a plurality of exhaust venting exhaust pipes. Background Art

[0002] At present, various types of pressurized gases are exhausted and vented in various industrial and mining enterprises. The exhaust pipes regularly discharge water vapor, compressed air, compressed oxygen and other gases. Due to the high gas flow rate and high pressure, a huge exhaust noise is generated during the exhaust process, causing the environmental noise inside the factory and even outside the factory to exceed the standard, endangering the health and safety of employees inside the factory and residents outside the factory. When the noise reaches 50 or 60 decibels, people feel uncomfortable, affecting their thinking and concentration; if it is higher than 80 or 90 decibels, it will affect people's physical health: long-term exposure to strong noise can also cause hearing loss or noise-induced deafness, and even lead to certain diseases, affecting daily life.

[0003] At present, the existing exhaust mufflers are mainly for single pipes, using throttling and pressure reduction and small hole injection composite muffler as the main method, supplemented by resistive sound absorption. This method can achieve a sound reduction of 20-30dBA, and the noise 5 meters away from the muffler outlet is usually 90-110dBA. For residents who are very close to the discharge port, the noise is still not satisfactory after installing such a muffler. If a muffler that uses throttling and pressure reduction and small hole injection composite muffler as the auxiliary method and resistive sound absorption as the main method is used, a greater sound reduction can be achieved, but the muffler is heavy and bulky, and the cost is high. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a composite muffler which can be connected to a plurality of exhaust pipes for exhaust venting, so that the exhaust venting noise control facility has low investment, large noise reduction and smooth airflow discharge.

[0005] The utility model provides a composite muffler, comprising an exhaust pipe group, a connecting component, an injection cylinder group, and a resistive muffler. The exhaust pipe group is connected to the injection cylinder group through the connecting component. The injection cylinder group is arranged on the inlet side of the resistive muffler. The exhaust pipe group has multiple groups, and the injection cylinder group has multiple groups. The injection cylinder group has large-hole throttling and pressure-reducing injection cylinders and / or small-hole injection cylinders. A single injection cylinder group is connected to at least one exhaust pipe group.

[0006] Further, the injection cylinder group includes a first injection cylinder group, a second injection cylinder group, a third injection cylinder group, and a fourth injection cylinder group, the first injection cylinder group is arranged in the second injection cylinder group, and the second injection cylinder group, the third injection cylinder group, and the fourth injection cylinder group are arranged in parallel.

[0007] Furthermore, the connecting component includes a collector component and a connecting pipe component, and the exhaust pipe group is connected to the injection cylinder group through the collector component and the connecting pipe component in sequence, or the exhaust pipe group is connected to the injection cylinder group through the connecting pipe component.

[0008] Furthermore, the collector component includes a first spherical collector, a second spherical collector, and a third spherical collector. The collector component is a spherical collector. The spherical collector has a hollow spherical shell. The hollow spherical shell has a mounting hole with a diameter larger than the outer diameter of the exhaust pipe or the connecting pipe. The first spherical collector, the second spherical collector, and the third spherical collector are arranged in parallel and non-connected.

[0009] Furthermore, the connecting pipe component includes a first connecting pipe, a second connecting pipe, a third connecting pipe, and a fourth connecting pipe. The first connecting pipe and the second connecting pipe are connected in parallel, and the first connecting pipe and the third connecting pipe and the fourth connecting pipe are not connected in parallel.

[0010] Furthermore, the exhaust pipe group includes a small and medium diameter high pressure exhaust pipe group, a large diameter medium and low pressure exhaust pipe group, a small and medium diameter low pressure exhaust pipe group, and a small diameter medium and low pressure exhaust pipe group, and each exhaust pipe group has at least two exhaust pipes.

[0011] Furthermore, the small and medium diameter high pressure exhaust pipe group is connected to the first injection cylinder group through the first spherical collector and the first connecting pipe in sequence, and the large diameter medium and low pressure exhaust pipe group is connected to the second injection cylinder group through the second connecting pipe.

[0012] Furthermore, the small and medium diameter low pressure exhaust pipe group is connected to the third injection cylinder group via the second spherical collector and the fourth connecting pipe in sequence.

[0013] Furthermore, the small-diameter medium- and low-pressure exhaust pipe group is connected to the fourth injection cylinder group through a third spherical collector and a third connecting pipe in sequence.

[0014] Furthermore, the injection cylinder group has an outer cylinder with one end closed, the open end of the outer cylinder is fixedly connected to the inlet end of the resistive muffler, the outlet end of the resistive muffler is fixedly connected with a guide cylinder, and the outer wall of the outer cylinder is provided with a plurality of mounting protrusions.

[0015] The utility model connects a resistive silencer through multiple groups of injection tube groups, and can simultaneously connect up to 60 exhaust pipes of the same or different pressures, diameters, and displacements to one silencer. The silencer capabilities of the resistive silencers are superimposed to achieve an overall silencer volume of 35-60dBA, and centralized discharge is achieved, thereby reducing equipment costs.

[0016] The utility model can utilize the throttle tubes of the medium and low pressure exhaust pipes, so that the high pressure exhaust pipe can conveniently realize multi-stage pressure reduction, thereby improving the noise reduction efficiency.

[0017] The utility model makes full use of the characteristics of exhaust pipes not venting exhaust at the same time, so that the flow velocity in the muffler channel of the resistive muffler is usually not higher than 20m / s, reducing the airflow regeneration noise, so that the noise at 5 meters from the muffler outlet can be designed to be below 85dBA, and can be designed to be below 70dBA in special circumstances, which can meet the requirements of various environmental zoning for factory boundary noise emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A cross-sectional schematic diagram of a composite muffler provided by the utility model;

[0020] Figure 2 An AA cross-sectional view of a composite muffler provided by the utility model;

[0021] Figure 3 A bottom view of a composite muffler provided by the utility model;

[0022] Figure 4 This is an enlarged view of the B node of a composite silencer provided by the utility model.

[0023] Description of reference numerals:

[0024] 1. Exhaust pipe, 2. Connecting component, 3. Injection tube group, 4. Resistive muffler, 1-1. Small and medium diameter high pressure exhaust pipe group, 1-2. Large diameter medium and low pressure exhaust pipe group, 1-3. Small and medium diameter low pressure exhaust pipe group, 1-4. Small diameter medium and low pressure exhaust pipe group, 2-1. First spherical collector, 2-4. Second spherical collector, 2-5. Third spherical collector, 2-2. First connecting pipe, 2-3. Second connecting pipe, 2-6. Third connecting pipe, 2-7. Fourth connecting pipe, 3-1. First injection tube group, 3-2. Second injection tube group, 3-3. Third injection tube group, 3-4. Fourth injection tube group. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0026] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0027] See attached Figure 1-4 The utility model provides a composite muffler, including an exhaust pipe group 1, a connecting member 2, an injection cylinder group 3, and a resistive muffler 4. The exhaust pipe group 1 is connected to the injection cylinder group 3 through the connecting member 2. The injection cylinder group 3 is arranged on the inlet side of the resistive muffler 4. The exhaust pipe group 1 has multiple groups, and the injection cylinder group 3 has multiple groups. The injection cylinder group 3 has large-hole throttling and pressure-reducing injection cylinders and / or small-hole injection cylinders. A single group of injection cylinder groups 3 is connected to at least one exhaust pipe group 1.

[0028] The injection cylinder group 3 includes a first injection cylinder group 3-1, a second injection cylinder group 3-2, a third injection cylinder group 3-3, and a fourth injection cylinder group 3-4. The first injection cylinder group 3-1 is arranged in the second injection cylinder group 3-2, and the second injection cylinder group 3-2, the third injection cylinder group 3-3, and the fourth injection cylinder group 3-4 are arranged in parallel.

[0029] The connecting component 2 includes a collector component and a connecting pipe component. The exhaust pipe group 1 is connected to the injection cylinder group 3 through the collector component and the connecting pipe component in sequence, or the exhaust pipe group 1 is connected to the injection cylinder group 3 through the connecting pipe component.

[0030] The collector component includes a first spherical collector 2-1, a second spherical collector 2-4, and a third spherical collector 2-5. The collector component is a spherical collector. The spherical collector has a hollow spherical shell. The hollow spherical shell has a mounting hole with a diameter larger than the outer diameter of the exhaust pipe or the connecting pipe. The first spherical collector 2-1, the second spherical collector 2-4, and the third spherical collector 2-5 are arranged in parallel and non-connected.

[0031] The connecting pipe component includes a first connecting pipe 2-2, a second connecting pipe 2-3, a third connecting pipe 2-6, and a fourth connecting pipe 2-7. The first connecting pipe 2-2 and the second connecting pipe 2-3 are connected in parallel, and the first connecting pipe 2-2 and the third connecting pipe 2-6 and the fourth connecting pipe 2-7 are not connected in parallel.

[0032] The exhaust pipe group 1 includes a small and medium diameter high pressure exhaust pipe group 1-1, a large diameter medium and low pressure exhaust pipe group 1-2, a small and medium diameter low pressure exhaust pipe group 1-3, and a small diameter medium and low pressure exhaust pipe group 1-4, and each exhaust pipe group has at least two exhaust pipes.

[0033] The small and medium diameter high pressure exhaust pipe group 1-1 is connected to the first injection cylinder group 3-1 through the first spherical collector 2-1 and the first connecting pipe 2-2 in sequence, and the large diameter medium and low pressure exhaust pipe group 1-2 is connected to the second injection cylinder group 3-2 through the second connecting pipe 2-3. The small and medium diameter low pressure exhaust pipe group 1-3 is connected to the third injection cylinder group 3-3 through the second spherical collector 2-4 and the fourth connecting pipe 2-7 in sequence. The small diameter medium and low pressure exhaust pipe group 1-4 is connected to the fourth injection cylinder group 3-4 through the third spherical collector 2-5 and the third connecting pipe 2-6 in sequence.

[0034] The injection cylinder group 3 has an outer cylinder with one end closed, the open end of the outer cylinder is fixedly connected to the inlet end of the resistive muffler 4, the outlet end of the resistive muffler 4 is fixedly connected with a guide cylinder, and the outer wall of the outer cylinder is provided with a plurality of mounting protrusions.

[0035] The exhaust pipe group 1 has multiple exhaust pipes, which are the intake pipes of the muffler. The multiple exhaust pipes are high, medium-low and low-pressure exhaust pipes, with the same or different pressures, displacements and calibers. The pressure range is 0.1MPa-17MPa, the number is 3-60, the diameter range is DN20mm-DN900mm, the discharge medium is water vapor, compressed air, compressed oxygen, and the exhaust temperature is 20-600℃. Exhaust venting occurs occasionally, and there is no situation where all the exhaust pipes connected to a muffler are exhausted and vented at the same time.

[0036] The small and medium diameter high pressure exhaust pipe group 1-1 has 4 small and medium diameter high pressure exhaust pipes, the large diameter medium and low pressure exhaust pipe group 1-2 has 2 large diameter medium and low pressure exhaust pipes, the small and medium diameter low pressure exhaust pipe group 1-3 has 15 small and medium diameter low pressure exhaust pipes, and the small diameter medium and low pressure exhaust pipe group 1-4 has 4 small diameter medium and low pressure exhaust pipes.

[0037] The hollow spherical shell is provided with a hole with a diameter slightly larger than the outer diameter of the exhaust pipe or the connecting pipe at the connection point with all the exhaust pipes and the connecting pipes, and is welded with the corresponding exhaust pipes and the connecting pipes. The second connecting pipe 2-3 has a reducer, and the large-diameter medium- and low-pressure exhaust pipe group 1-2 is connected to the second connecting pipe 2-3 through the reducer.

[0038] The first injection cylinder group 3-1 is a high-pressure injection cylinder group, the second injection cylinder group 3-2 and the fourth injection cylinder group 3-4 are medium- and low-pressure injection cylinder groups, and the third injection cylinder group 3-3 is a low-pressure injection cylinder group.

[0039] The first injection cylinder group 3-1 and the second injection cylinder group 3-2 both have 1-3 layers of large-hole throttling and pressure-reducing injection cylinders or small-hole injection cylinders. The first injection cylinder group 3-1 is located inside the second injection cylinder group 3-2, and the first connecting pipe 2-2 is inserted into the second connecting pipe 2-3.

[0040] Connect the high-pressure exhaust pipe to the spherical collector and then to the connecting pipe. Insert the connecting pipe into the connecting pipe of the medium and low-pressure exhaust pipes with large diameters, and then connect it to the high-pressure injection cylinder group. In this way, the high-pressure injection cylinder group will be placed inside the medium and low-pressure injection cylinder group.

[0041] Since the outer diameter of the connecting pipe of the high-pressure exhaust pipe is small, the outer diameter of its injection cylinder group is also small, and the high-pressure injection cylinder group has little effect on the airflow of the medium and low-pressure exhaust pipes. For the high-pressure exhaust pipe, the high-pressure injection cylinder group and the medium and low-pressure injection cylinder group can throttle and reduce the pressure of its airflow, thereby efficiently reducing the noise generated during the airflow reduction process.

[0042] The high-pressure injection cylinder group includes two layers of large-hole throttling and pressure-reducing injection cylinders, the medium- and low-pressure injection cylinder group includes two internal layers of large-hole throttling and pressure-reducing injection cylinders and one external layer of small-hole injection cylinders, and the low-pressure injection cylinder group includes one internal layer of large-hole throttling and pressure-reducing injection cylinders and one external layer of small-hole injection cylinders.

[0043] The high-pressure first injection cylinder group 3-1 is placed inside the medium-low pressure second injection cylinder group 3-2, and the first connecting pipe 2-2 is inserted into the second connecting pipe 2-3. The gas from the medium and small diameter high-pressure exhaust pipe group flows through the high-pressure first injection cylinder group 3-1 and the medium-low pressure second injection cylinder group 3-2. Since the high-pressure injection cylinder group includes two layers of large-hole throttling and pressure-reducing injection cylinders, and the medium-low pressure injection cylinder group includes two layers of large-hole throttling and pressure-reducing injection cylinders inside and one layer of small-hole injection cylinders outside, the five-level pressure reduction of the airflow is achieved. The amplitude of each gas pressure reduction is small, and the noise generated is correspondingly reduced.

[0044] The injection tube group 3 has an outer tube with one end closed, the open end of the outer tube is fixedly connected to the inlet end of the resistive muffler 4, the outlet end of the resistive muffler 4 is fixedly connected to a guide tube, and the outer wall of the outer tube is provided with a plurality of mounting protrusions. Multiple groups of injection tube groups are connected to one resistive muffler 4.

[0045] When the utility model is exhausting, the noise level at 5 meters lateral to the muffler outlet is not greater than 85dBA. Under special circumstances, the noise at the above measuring point can be designed to be below 70dBA.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A composite muffler, comprising an exhaust pipe group (1), a connecting member (2), an injection cylinder group (3), and a resistive muffler (4), wherein the exhaust pipe group (1) is connected to the injection cylinder group (3) through the connecting member (2), and the injection cylinder group (3) is arranged at the inlet side of the resistive muffler (4), characterized in that: The exhaust pipe group (1) has multiple groups, the injection tube group (3) has multiple groups, the injection tube group (3) has large-hole throttling and pressure-reducing injection tubes and / or small-hole injection tubes, and a single group of injection tube groups (3) is connected to at least one exhaust pipe group (1).

2. The composite muffler according to claim 1, characterized in that: The injection cylinder group (3) comprises a first injection cylinder group (3-1), a second injection cylinder group (3-2), a third injection cylinder group (3-3), and a fourth injection cylinder group (3-4); the first injection cylinder group (3-1) is arranged in the second injection cylinder group (3-2); the second injection cylinder group (3-2), the third injection cylinder group (3-3), and the fourth injection cylinder group (3-4) are arranged in parallel.

3. The composite muffler according to claim 2, characterized in that: The connecting component (2) comprises a collector component and a connecting pipe component, and the exhaust pipe group (1) is connected to the injection cylinder group (3) via the collector component and the connecting pipe component in sequence, or the exhaust pipe group (1) is connected to the injection cylinder group (3) via the connecting pipe component.

4. The composite muffler according to claim 3, characterized in that: The collector component comprises a first spherical collector (2-1), a second spherical collector (2-4), and a third spherical collector (2-5). The collector component is a spherical collector having a hollow spherical shell. The hollow spherical shell has a mounting hole with a diameter larger than the outer diameter of the exhaust pipe or the connecting pipe. The first spherical collector (2-1), the second spherical collector (2-4), and the third spherical collector (2-5) are arranged in parallel and not connected.

5. The composite muffler according to claim 4, characterized in that: The connecting pipe component comprises a first connecting pipe (2-2), a second connecting pipe (2-3), a third connecting pipe (2-6), and a fourth connecting pipe (2-7); the first connecting pipe (2-2) and the second connecting pipe (2-3) are connected in parallel, and the first connecting pipe (2-2) and the third connecting pipe (2-6) and the fourth connecting pipe (2-7) are not connected in parallel.

6. The composite muffler according to claim 5, characterized in that: The exhaust pipe group (1) comprises a small and medium diameter high pressure exhaust pipe group (1-1), a large diameter medium and low pressure exhaust pipe group (1-2), a small and medium diameter low pressure exhaust pipe group (1-3), and a small diameter medium and low pressure exhaust pipe group (1-4), and each exhaust pipe group has at least two exhaust pipes.

7. The composite muffler according to claim 6, characterized in that: The small and medium diameter high pressure exhaust pipe group (1-1) is connected to the first injection tube group (3-1) via the first spherical collector (2-1) and the first connecting pipe (2-2) in sequence, and the large diameter medium and low pressure exhaust pipe group (1-2) is connected to the second injection tube group (3-2) via the second connecting pipe (2-3).

8. The composite muffler according to claim 6, characterized in that: The small and medium diameter low pressure exhaust pipe group (1-3) is connected to the third injection cylinder group (3-3) via the second spherical collector (2-4) and the fourth connecting pipe (2-7) in sequence.

9. The composite muffler according to claim 6, characterized in that: The small-diameter medium- and low-pressure exhaust pipe group (1-4) is connected to the fourth injection cylinder group (3-4) via a third spherical collector (2-5) and a third connecting pipe (2-6) in sequence.

10. The composite muffler according to any one of claims 1 to 9, characterized in that: The injection cylinder group (3) comprises an outer cylinder with one end closed, the open end of the outer cylinder is fixedly connected to the inlet end of the resistive muffler (4), the outlet end of the resistive muffler (4) is fixedly connected to a guide cylinder, and the outer wall of the outer cylinder is provided with a plurality of mounting protrusions.

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