High-temperature-resistant silencer heat insulation device

Abstract

The utility model discloses a high-temperature-resistant silencer heat insulation device, which relates to the field of silencers and comprises a silencer main body, two groups of first heat insulation cover shells and two groups of second heat insulation cover shells, and an air inlet pipe and an exhaust pipe are fixedly connected to the middle positions of two ends of the silencer main body respectively. Connecting holes are formed in the outer ends, close to the air inlet pipe, of the two first heat insulation cover shells in a penetrating mode, first external thread plates and second external threads are fixedly connected to the outer ends, close to the exhaust pipe, of the two second heat insulation cover shells correspondingly, connecting rods are fixedly connected to the inner ends of the two second heat insulation cover shells correspondingly, and the four connecting rods are located on the inner sides of the four connecting holes correspondingly; the silencer heat insulation device has the advantages that bolts and nuts are not needed, the heat insulation device can be conveniently disassembled and assembled, the disassembly and assembly efficiency of the silencer heat insulation device is remarkably improved, the situation that the silencer is damaged due to local high temperature due to the fact that the heat insulation device makes contact with the silencer body can be avoided, and the good protection effect is achieved.

Description

Technical Field

[0001] The utility model relates to the field of mufflers, in particular to a high temperature resistant muffler heat insulation device. Background Art

[0002] Car mufflers are mainly used to reduce the noise generated by the engine of a motor vehicle when it is working. The principle is that the car exhaust pipe is composed of two pipes of different lengths. The two pipes are first separated and then intersected. Since the length difference between the two pipes is equal to half the wavelength of the sound wave emitted by the car, the two sound waves interfere and cancel each other out when superimposed, thereby reducing the sound intensity and reducing the transmitted sound, thereby achieving a silencing effect. During use, the car muffler will heat up when heated. When maintenance personnel are inspecting, if they accidentally touch the car muffler, it will cause physical harm to the maintenance personnel, which cannot meet people's needs.

[0003] After searching, the patent number is CN218347450U, which discloses a car muffler heat insulation cover, which solves the problem that the current car muffler heat insulation cover can only insulate a single specification of car muffler and is difficult to adjust the insulation and fixation according to the diameter of the car muffler. However, when the existing muffler heat insulation device is in use, it usually requires the use of several bolts and nuts to fix the insulation device, the operation is relatively complicated, and the disassembly and assembly efficiency is relatively low. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high temperature resistant muffler insulation device. When the existing muffler insulation device is in use, it usually needs to use a plurality of bolts and nuts to fix the insulation device, the operation is relatively complicated, and the disassembly and assembly efficiency is relatively low.

[0005] In order to solve the above technical problems, the technical solution of the utility model is a high-temperature resistant silencer insulation device, comprising a silencer body, and also comprising two groups of first insulation cover shells and two groups of second insulation cover shells, the middle positions at both ends of the silencer body are respectively fixedly connected with an intake pipe and an exhaust pipe, the outer ends of the two groups of the first insulation cover shells near the intake pipe are respectively provided with connecting holes, and the outer ends of the two groups of the second insulation cover shells near the exhaust pipe are respectively fixedly connected with a first external threaded plate and a second external threaded plate.

[0006] As a further solution of the utility model: the inner ends of the two groups of the second insulation cover shells are fixedly connected with connecting rods, and the four groups of connecting rods are respectively located on the inner sides of the four groups of connecting holes, and the middle cross-sections of the two groups of the first insulation cover shells and the two groups of the second insulation cover shells are semicircular.

[0007] As a further solution of the utility model: the outer periphery of the exhaust pipe is provided with an internal threaded ring plate, the cross-sections of the first external threaded plate and the second external threaded plate are both semicircular, and the first external threaded plate and the second external threaded plate are both threadedly connected to the internal threaded ring plate.

[0008] As a further solution of the utility model: two groups of baffles are provided at both ends of the muffler body, two groups of card holes are penetrated through the outer side surfaces of the four groups of baffles, four groups of card blocks are fixedly connected at both ends of the muffler body, two groups of limit pipes are fixedly connected to the outer side surfaces of the four groups of baffles, and two groups of limit rods are fixedly connected to the two inner ends of the two groups of the first heat insulation cover shells.

[0009] As a further solution of the utility model: the clamping block is located inside the clamping hole, and the four groups of baffles are respectively clamped with the muffler body through two groups of clamping blocks and two groups of clamping holes.

[0010] As a further solution of the utility model: the four groups of baffles are all semicircular in shape, and the eight groups of limit rods are slidably connected to the eight groups of limit tubes respectively.

[0011] As a further solution of the utility model: the peripheries of the eight groups of limit tubes are all sleeved with compression springs, and the two ends of the compression springs are respectively fixedly connected to the first heat insulation cover shell and the baffle.

[0012] The utility model adopts the above technical scheme, and has the following advantages compared with the prior art: first, two groups of first heat insulation cover shells are connected and placed on the periphery of the muffler body, and then the two groups of second heat insulation cover shells are respectively connected to the two groups of first heat insulation cover shells through four groups of connecting rods and four groups of connecting holes. At this time, the first external threaded plate and the second external threaded plate are both fitted to the periphery of the exhaust pipe, and the two groups of second heat insulation cover shells are tightly connected through the internal threaded ring plate, without the need to use bolts and nuts, thereby realizing the convenient disassembly and assembly function of the heat insulation device, and significantly improving the disassembly and assembly efficiency of the muffler heat insulation device.

[0013] Through the cooperation of the clamping block and the clamping hole, the four groups of baffles are respectively clamped on the two ends of the muffler body, and then the muffler body is moved between the two inner ends of the first thermal insulation cover shell through eight groups of limit rods and eight groups of limit tubes in cooperation with eight groups of compression springs. The inner side walls of the two groups of first thermal insulation cover shells do not contact the muffler body, which can prevent the thermal insulation device from contacting the muffler body and causing the muffler to be damaged due to local high temperature, thereby playing a good protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of a high temperature resistant muffler insulation device in an embodiment of the utility model;

[0015] Figure 2This is a schematic diagram of the distribution structure of the first heat-insulating cover shell and the second heat-insulating cover shell in the embodiment of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection structure of the baffle in the embodiment of the utility model;

[0017] Figure 4 It is a cross-sectional schematic diagram of a high temperature resistant silencer insulation device in an embodiment of the utility model.

[0018] In the figure: 1. silencer body; 2. intake pipe; 3. exhaust pipe; 4. first heat-insulating cover shell; 5. connecting hole; 6. second heat-insulating cover shell; 7. first external thread plate; 8. second external thread plate; 9. internal thread ring plate; 10. baffle; 11. clamping hole; 12. clamping block; 13. limit tube; 14. limit rod; 15. compression spring. DETAILED DESCRIPTION

[0019] The specific implementation methods of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these implementation methods is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in each implementation method of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] Example 1, please refer to Figure 1-Figure 4 A high temperature resistant silencer insulation device comprises a silencer body 1, and also comprises two groups of first insulation cover shells 4 and two groups of second insulation cover shells 6. An intake pipe 2 and an exhaust pipe 3 are fixedly connected to the middle positions of both ends of the silencer body 1. The outer ends of the two groups of first insulation cover shells 4 near the intake pipe 2 are penetrated with connection holes 5. The outer ends of the two groups of second insulation cover shells 6 near the exhaust pipe 3 are fixedly connected with a first external threaded plate 7 and a second external threaded plate 8.

[0021] The inner ends of the two groups of second insulation cover shells 6 are fixedly connected with connecting rods, and the four groups of connecting rods are respectively located on the inner sides of the four groups of connecting holes 5. The middle cross-sections of the two groups of first insulation cover shells 4 and the two groups of second insulation cover shells 6 are semicircular.

[0022] In this embodiment, two groups of second heat-insulating cover shells 6 are respectively connected to two groups of second heat-insulating cover shells 4 through four groups of connecting rods and four groups of connecting holes 5 .

[0023] An inner threaded ring plate 9 is sleeved on the periphery of the exhaust pipe 3 . The cross sections of the first outer threaded plate 7 and the second outer threaded plate 8 are both semicircular arc-shaped, and the first outer threaded plate 7 and the second outer threaded plate 8 are both threadedly connected to the inner threaded ring plate 9 .

[0024] In this embodiment, the two sets of second heat-insulating cover shells 6 are connected by the first externally threaded plate 7 and the second externally threaded plate 8 in conjunction with the internally threaded ring plate 9 .

[0025] Specifically, the two groups of first insulation cover shells 4 are first connected and placed on the periphery of the muffler body 1, and then the two groups of second insulation cover shells 6 are respectively connected to the two groups of first insulation cover shells 4 through four groups of connecting rods and four groups of connecting holes 5. At this time, the first external threaded plate 7 and the second external threaded plate 8 are both fitted to the periphery of the exhaust pipe 3, and the two groups of second insulation cover shells 6 are tightly connected through the internal threaded ring plate 9, without the use of bolts and nuts, thereby realizing the convenient disassembly and assembly function of the insulation device, and significantly improving the disassembly and assembly efficiency of the muffler insulation device.

[0026] Example 2, please refer to Figure 1-Figure 4 A high temperature resistant silencer insulation device, two groups of baffles 10 are arranged at both ends of the silencer body 1, two groups of card holes 11 are penetrated through the outer side surfaces of the four groups of baffles 10, four groups of card blocks 12 are fixedly connected at both ends of the silencer body 1, two groups of limit tubes 13 are fixedly connected to the outer side surfaces of the four groups of baffles 10, and two groups of limit rods 14 are fixedly connected to the two inner ends of the two groups of first insulation cover shells 4.

[0027] The clamping block 12 is located inside the clamping hole 11 , and the four groups of baffles 10 are respectively clamped with the muffler body 1 through two groups of clamping blocks 12 and two groups of clamping holes 11 .

[0028] In this embodiment, the four groups of baffles 10 are respectively engaged with the muffler body 1 through the cooperation of the clamping blocks 12 and the clamping holes 11 .

[0029] The four groups of baffles 10 are all semicircular in shape, the eight groups of limiting rods 14 are slidably connected to the eight groups of limiting tubes 13 respectively, the peripheries of the eight groups of limiting tubes 13 are all sleeved with compression springs 15, and the two ends of the compression springs 15 are respectively fixedly connected to the first insulation cover shell 4 and the baffle 10.

[0030] In this embodiment, eight groups of limit tubes 13 and eight groups of limit rods 14 cooperate with eight groups of compression springs 15 to prevent the muffler body 1 from contacting the heat insulation device.

[0031] Specifically, through the cooperation of the clamping block 12 and the clamping hole 11, the four groups of baffles 10 are respectively clamped on the two ends of the muffler body 1, and then the muffler body 1 is moved between the two inner ends of the first thermal insulation cover shell 4 through eight groups of limiting rods 14 and eight groups of limiting tubes 13 in cooperation with eight groups of compression springs 15. The inner side walls of the two groups of first thermal insulation cover shells 4 do not contact the muffler body 1, which can avoid the thermal insulation device from contacting the muffler body 1 and causing the muffler to be damaged due to local high temperature, thereby playing a good protective role.

[0032] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A high temperature resistant muffler insulation device, comprising a muffler body (1), characterized in that: It also comprises two groups of first heat-insulating cover shells (4) and two groups of second heat-insulating cover shells (6); the middle positions at both ends of the muffler body (1) are respectively fixedly connected to an intake pipe (2) and an exhaust pipe (3); the outer ends of the two groups of first heat-insulating cover shells (4) close to the intake pipe (2) are provided with connecting holes (5); the outer ends of the two groups of second heat-insulating cover shells (6) close to the exhaust pipe (3) are respectively fixedly connected to a first externally threaded plate (7) and a second externally threaded plate (8).

2. A high temperature resistant muffler insulation device according to claim 1, characterized in that: The inner ends of the two groups of the second heat-insulating cover shells (6) are fixedly connected with connecting rods, and the four groups of connecting rods are respectively located on the inner sides of the four groups of connecting holes (5), and the middle cross-sections of the two groups of the first heat-insulating cover shells (4) and the two groups of the second heat-insulating cover shells (6) are both semicircular arc-shaped.

3. The high temperature resistant muffler insulation device according to claim 1, characterized in that: An internally threaded ring plate (9) is sleeved on the periphery of the exhaust pipe (3); the first externally threaded plate (7) and the second externally threaded plate (8) both have semicircular cross-sections, and the first externally threaded plate (7) and the second externally threaded plate (8) are both threadedly connected to the internally threaded ring plate (9).

4. The high temperature resistant muffler insulation device according to claim 1, characterized in that: Two groups of baffles (10) are provided at both ends of the muffler body (1), and two groups of clamping holes (11) are penetrated through the outer side surfaces of the four groups of baffles (10). Four groups of clamping blocks (12) are fixedly connected to both ends of the muffler body (1), and two groups of limit tubes (13) are fixedly connected to the outer side surfaces of the four groups of baffles (10), and two groups of limit rods (14) are fixedly connected to the two inner ends of the two groups of the first heat insulation cover shells (4).

5. A high temperature resistant muffler insulation device according to claim 4, characterized in that: The clamping block (12) is located inside the clamping hole (11), and the four groups of baffles (10) are respectively clamped with the muffler body (1) through two groups of clamping blocks (12) and two groups of clamping holes (11).

6. A high temperature resistant muffler insulation device according to claim 5, characterized in that: The four groups of baffles (10) are all arranged in a semicircular shape, and the eight groups of limiting rods (14) are respectively slidably connected to the eight groups of limiting tubes (13).

7. A high temperature resistant muffler insulation device according to claim 6, characterized in that: The peripheries of the eight groups of limit tubes (13) are all sleeved with compression springs (15), and the two ends of the compression springs (15) are respectively fixedly connected to the first heat-insulating cover shell (4) and the baffle (10).

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