Exhaust heat shield applied to diesel engine

Abstract

The utility model belongs to the technical field of exhaust heat insulation covers, and particularly relates to an exhaust heat insulation cover applied to a diesel engine, which comprises a heat insulation cover body, a clamping groove arranged on the surface of an opening end on one side of the heat insulation cover body, an inserting block clamped and inserted on the surface of the clamping groove, a connecting plate connected on the surface of the other side of the inserting block, and a convex block connected on the surface of the other side of the connecting plate. The surface of the protruding block is slidably inserted into the inserting groove which is formed in the surface of the opening end of the other side of the heat insulation cover body. According to the exhaust pipe heat shield, the heat shield body, the clamping groove, the inserting block, the connecting plate, the protruding block, the inserting groove, the limiting block, the semicircular rubber block, the sealing rubber piece and the limiting sleeve are matched with one another, the inserting block is clamped and fixed to the opening end of the heat shield body, and therefore the position of the heat shield body on the surface of the exhaust pipe can be conveniently, rapidly and firmly fixed; meanwhile, gaps at the joints of the heat shield body are filled, so that leakage of hot air through the gaps is reduced, and the possibility that heat is transferred out of the heat shield is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust heat shield technology, specifically relating to an exhaust heat shield for diesel engines. Background Technology

[0002] An exhaust heat shield for a diesel engine is a device used to enclose the exhaust system. It is typically made of high-temperature resistant materials such as ceramic fiber, glass fiber, or metal composites. Its main function is to reduce the heat emitted by the exhaust system, lower the ambient temperature, and prevent heat from damaging nearby components, equipment, and personnel. Simultaneously, the exhaust heat shield also provides some sound insulation and noise reduction, decreasing the noise generated during diesel engine operation. Furthermore, it can improve the thermal efficiency of the diesel engine because reduced heat loss allows for more efficient utilization of exhaust energy. Moreover, the exhaust heat shield protects the exhaust system itself, slowing down the aging and damage of its components caused by high temperatures, extending the service life of the exhaust system, and thus improving the reliability and stability of the entire diesel engine system.

[0003] Existing exhaust heat shields are typically fixed to the diesel engine exhaust pipe surface using bolts and pre-drilled mounting holes. However, in actual use, high temperatures can alter the mechanical properties of the bolt materials, and combined with the vibrations of the diesel engine during operation, the bolts are prone to fatigue fracture. Furthermore, after repeated disassembly and maintenance, the bolt holes may experience wear, stripping, and other problems, affecting the heat shield's fixation effectiveness. Utility Model Content

[0004] The purpose of this invention is to provide an exhaust heat shield for diesel engines, addressing the problem that existing exhaust heat shields, which typically rely on bolts and pre-drilled mounting holes for fixation to the diesel engine exhaust pipe, suffer from fatigue fractures due to high temperatures altering the mechanical properties of the bolts and the vibrations of the diesel engine during operation. Furthermore, repeated disassembly and maintenance can lead to wear and stripping of the bolt holes, affecting the effective fixation of the heat shield.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an exhaust heat shield for a diesel engine, comprising a heat shield body, a slot formed on the open end surface of one side of the heat shield body, a plug engaging with the slot surface, the other side surface of the plug connected to a connecting plate, a protrusion connected to the other side surface of the connecting plate, the protrusion slidably inserted into a slot, the slot being formed on the open end surface of the other side of the heat shield body, the surface of the heat shield body engaging with the surfaces of semi-circular rubber blocks on both sides of a limiting block, the bottom of the limiting block abutting the top of the protrusion, a sealing film connected to the end surface of the heat shield body near the connecting plate, the sealing film inserted into the inner wall of the limiting sleeve, the surface of the limiting sleeve connected to the open end surface of the other side of the heat shield body, the surface of the heat shield body abutting the sealing film, a fixing ear connected to the surface of the heat shield body, the fixing ear abutting a rectangular block on the surface of the protective cover, and a connector inserted into the open end surface of the protective cover.

[0006] As a preferred embodiment of the present invention for an exhaust heat shield for a diesel engine, five sets of slots are longitudinally and equally spaced on the open end surface of one side of the heat shield body.

[0007] As a preferred embodiment of the exhaust heat shield for diesel engines according to this utility model, the protrusion has a "T" shaped structure, and the shape and size of the protrusion are adapted to the slot.

[0008] As a preferred embodiment of the exhaust heat shield of this utility model for diesel engines, the limiting block has a "T" shaped structure, with semi-circular rubber blocks on both sides of its horizontal end. The shape and size of the semi-circular rubber blocks are adapted to the groove opened at the upper end of the intersection of the slot and the heat shield body.

[0009] As a preferred embodiment of the present invention for an exhaust heat shield for a diesel engine, the other side surface of the connector is connected to the surface of the protective cover, and the protective cover is threadedly connected to the screw at the intersection of the rectangular block and the fixing lug.

[0010] As a preferred embodiment of the exhaust heat shield for diesel engines according to this utility model, the two sets of protective shields are connected to each other by a connector at the intersection of their opening ends.

[0011] As a preferred embodiment of the exhaust heat shield for diesel engines according to this utility model, the fixing lug, protective cover, connector and screw form a threaded connection structure.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] Through the mutual cooperation between the heat insulation cover body, the slot, the insert, the connecting plate, the protrusion, the slot, the limiting block, the semi-circular rubber block, the sealing film and the limiting sleeve, the insert is used to lock and fix it to the opening end of the heat insulation cover body, so as to quickly and firmly fix the position of the heat insulation cover body on the surface of the exhaust pipe, and at the same time fill the gap at the joint of the heat insulation cover body to reduce the leakage of hot air through the gap and reduce the possibility of heat transfer to the outside of the heat insulation cover.

[0014] The heat insulation cover body is supported and protected by the cooperation between the fixing ears, protective cover, connector and screw, which prevents the heat insulation cover body from being deformed or collapsed by external forces, and ensures that the heat insulation cover can maintain a good shape and effectively play its heat insulation role. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a top view sectional structural diagram of the present invention;

[0019] Figure 4 This is a side view sectional structural diagram of the present invention;

[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram of section A.

[0021] In the diagram: 1. Heat insulation cover body; 2. Slot; 3. Insert block; 4. Connecting plate; 5. Protrusion; 6. Slot; 7. Limiting block; 8. Semi-circular rubber block; 9. Sealing film; 10. Limiting sleeve; 11. Fixing ear; 12. Protective cover; 13. Connector; 14. Screw. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5The present invention provides the following technical solution: an exhaust heat shield for a diesel engine, comprising a heat shield body 1, a slot 2 is provided on the open end surface of one side of the heat shield body 1, a plug 3 is engaged and inserted on the surface of the slot 2, the other side surface of the plug 3 is connected to a connecting plate 4, a protrusion 5 is connected to the other side surface of the connecting plate 4, the protrusion 5 is slidably inserted into a slot 6, the slot 6 is provided on the open end surface of the other side of the heat shield body 1, the surface of the heat shield body 1 is engaged and connected to the surface of semi-circular rubber blocks 8 provided on both sides of a limiting block 7, the bottom of the limiting block 7 abuts against the top of the protrusion 5, a sealing film 9 is connected to the end surface of the heat shield body 1 near the connecting plate 4, the sealing film 9 is inserted into the inner wall of a limiting sleeve 10, the surface of the limiting sleeve 10 is connected to the open end surface of the other side of the heat shield body 1, the surface of the heat shield body 1 abuts against the sealing film 9, a fixing ear 11 is connected to the surface of the heat shield body 1, the surface of the fixing ear 11 abuts against a rectangular block on the surface of a protective cover 12, and the open end surface of the protective cover 12 is inserted into a connector 13.

[0024] Preferably, five sets of slots 2 are longitudinally and equally spaced on the surface of the open end of one side of the heat insulation cover body 1.

[0025] In practical use, the equally spaced slots 2 are used to make the insert block 3 plug in and engage with it to fix it together, thereby stably and firmly fixing the connection of the heat insulation cover body 1.

[0026] Preferably, the bump 5 has a "T" shaped structure, and the shape and size of the bump 5 are adapted to the slot 6.

[0027] In practical use, the heat shield body 1 is placed on the diesel engine pipe, and then the slot 6 opened on one side is used to insert and fix the protrusion 5.

[0028] Preferably, the limiting block 7 has a "T" shaped structure, with semi-circular rubber blocks 8 on both sides of its horizontal end. The shape and size of the semi-circular rubber blocks 8 are adapted to the groove opened at the upper end where the slot 6 and the heat insulation cover body 1 intersect.

[0029] In practical use, the limiting block 7 and the semi-circular rubber block 8 are inserted and locked onto the top of the protrusion 5, thereby fixing the position of the protrusion 5 on the slot 6.

[0030] Preferably, the other side surface of the connector 13 is connected to the surface of the protective cover 12, and the protective cover 12 is located at the intersection of the rectangular block and the fixing ear 11 and is threadedly connected to the screw 14.

[0031] In practical use, the protective cover 12 is fixed by fitting the inner wall of the fixing ears 11 distributed in a ring on the surface of the heat insulation cover body 1, and the screw 14 is threaded through the rectangular block on the surface of the protective cover 12 and connected to the fixing ears 11, thereby fixing the position of the two protective covers 12 on the surface of the heat insulation cover body 1.

[0032] Preferably, the two sets of protective covers 12 are connected to each other by a connector 13 at the intersection of their open ends.

[0033] In practical use, the connector 13 is used to plug into the intersection of the two protective covers 12, thereby increasing the contact area of ​​the open ends of the two and preventing the protective covers 12 from shifting during docking.

[0034] Preferably, the fixing ear 11, the protective cover 12, the connector 13 and the screw 14 form a threaded connection structure.

[0035] In practical use, the protective cover 12 is fixed by fitting the inner wall of the fixing ears 11 distributed in a ring on the surface of the heat insulation cover body 1, and the screw 14 is threaded through the rectangular block on the surface of the protective cover 12 and connected to the fixing ears 11, thereby fixing the position of the two protective covers 12 on the surface of the heat insulation cover body 1. Then, the two sets of protective covers 12 are joined together to wrap and protect the surface of the heat insulation cover body 1.

[0036] Working principle: When using the heat shield body 1 to provide heat insulation protection for the diesel engine exhaust pipe, the heat shield body 1 is placed on the diesel engine pipe. Then, the slot 6 on one open end is used to insert and fix the protrusion 5. The limiting block 7 and the semi-circular rubber block 8 are inserted and engaged to fix the top of the protrusion 5, thus fixing the position of the protrusion 5 in the slot 6. This, in turn, fixes the position of the connecting plate 4 at one open end of the heat shield body 1. At this time, the equally spaced inserts 3 on one side of the connecting plate 4 are inserted and engaged in the slot 2, thus fixing the position of the heat shield body 1 on the surface of the diesel engine exhaust pipe. In this design, the inserts 3, limiting blocks 7, and semi-circular rubber blocks 8 are all made of high-temperature resistant rubber, capable of withstanding the high temperatures during the operation of the heat shield body 1. The slot 2 and inserts 3 are engaged to fix the connection between the two open ends of the heat shield body 1. Simultaneously, the sealing film 9 connected to the surface of the heat shield body 1 near the connecting plate 4 is inserted into the limiting sleeve 10. The rubber material of the sealing film 9 and the limiting sleeve 10 increases the heat shield body's position. The friction between the two contact surfaces is increased to fix the connection between them, thereby filling the gap at the intersection of the heat insulation cover body 1 and preventing hot air from escaping from the gap and affecting other surrounding components and the environment. After the heat insulation cover body 1 is fixed in place, the protective cover 12 is fixed by using the inner wall of the fixing ears 11 distributed in a ring on the surface of the heat insulation cover body 1. The screw 14 is threaded through the rectangular block on the surface of the protective cover 12 and connected to the fixing ear 11, thereby fixing the position of the two protective covers 12 on the surface of the heat insulation cover body 1. The two sets of protective covers 12 are then used to abut together to wrap and protect the surface of the heat insulation cover body 1, so that there is a gap between the heat insulation cover body 1 and other external components, preventing the heat insulation cover body 1 from being damaged by particle impact. At the same time, after the insertion block 3 ages due to long-term use, the limiting block 7 that is engaged in the slot 6 is pulled out, thereby removing the protrusion 5 and connecting plate 4 inserted in the slot 6 and replacing the aged insertion block 3 to ensure the connection stability and firmness of the heat insulation cover body 1.

[0037] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An exhaust heat shield for application to a diesel engine, comprising a heat shield body (1), characterised in that: The heat shield body (1) one side opening end surface is equipped with clamping groove (2), the clamping groove (2) surface is inserted into the plug-in block (3), the plug-in block (3) the other side surface is connected to the connecting plate (4), the connecting plate (4) the other side surface is connected to the protruding block (5), the protruding block (5) surface is inserted into the slot (6) in, the slot (6) is equipped with on the other side opening end surface of heat shield body (1), the heat shield body (1) surface is connected to the semicircle rubber block (8) surface that is equipped with on both sides of limiting block (7), the limiting block (7) bottom abuts on the top of protruding block (5), the heat shield body (1) near connecting plate (4) end surface is connected to sealing rubber sheet (9), the sealing rubber sheet (9) is inserted into the inner wall of limiting sleeve (10), the limiting sleeve (10) surface is connected to the other side opening end surface of heat shield body (1), the heat shield body (1) surface abuts sealing rubber sheet (9), the heat shield body (1) surface is connected to fixed lug (11), the fixed lug (11) surface abuts the surface rectangular block of protective cover (12), the protective cover (12) opening end surface is inserted into the connecting head (13).

2. The exhaust heat shield for a diesel engine according to claim 1, characterized by: The heat shield body (1) one side opening end surface is equipped with clamping groove (2), the clamping groove (2) surface is inserted into the plug-in block (3), the plug-in block (3) the other side surface is connected to the connecting plate (4), the connecting plate (4) the other side surface is connected to the protruding block (5), the protruding block (5) surface is inserted into the slot (6) in, the slot (6) is equipped with on the other side opening end surface of heat shield body (1), the heat shield body (1) surface is connected to the semicircle rubber block (8) surface that is equipped with on both sides of limiting block (7), the limiting block (7) bottom abuts on the top of protruding block (5), the heat shield body (1) near connecting plate (4) end surface is connected to sealing rubber sheet (9), the sealing rubber sheet (9) is inserted into the inner wall of limiting sleeve (10), the limiting sleeve (10) surface is connected to the other side opening end surface of heat shield body (1), the heat shield body (1) surface abuts sealing rubber sheet (9), the heat shield body (1) surface is connected to fixed lug (11), the fixed lug (11) surface abuts the surface rectangular block of protective cover (12), the protective cover (12) opening end surface is inserted into the connecting head (13).

3. The exhaust heat shield for a diesel engine according to claim 1, characterized in that: The protruding block (5) is "T" type structure, and the shape size of the protruding block (5) is matched with the slot (6).

4. The exhaust heat shield for a diesel engine according to claim 3, characterized in that: The limiting block (7) is "T" type structure, and the semicircle rubber block (8) is equipped with on both sides of the transverse end, and the shape size of the semicircle rubber block (8) is matched with the recess in the intersection of the slot (6) and the upper end of the heat shield body (1).

5. The exhaust heat shield for a diesel engine according to claim 1, characterized in that: The connecting head (13) the other side surface is connected to the surface of protective cover (12), and the protective cover (12) is located at the intersection of the rectangular block and the fixed lug (11) and is connected with the screw rod (14) by screwing.

6. The exhaust heat shield for use in a diesel engine according to claim 5, characterized in that: Two groups of the protective cover (12) opening end intersection are inserted into each other by the connecting head (13).

7. The exhaust heat shield for use in a diesel engine according to claim 6, characterized in that: The fixed lug (11), the protective cover (12), the connecting head (13) and the screw rod (14) form a threaded connection structure.

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