Hydrocarbon injection device for diesel engine

Abstract

The utility model discloses a hydrocarbon injection device for a diesel engine, relates to the technical field of diesel engines, solves the problems that the existing device is inconvenient to mount and dismount and high in maintenance cost, and adopts the following scheme that a tail gas connecting pipe is assembled on the right side of a tail gas output pipe. Through the arrangement of a threaded groove and a fixing sleeve, the tail gas connecting pipe is taken down through the threaded groove and locking threads, then the hydrocarbon injection head is conveniently detached from the injection pipe through the threads, installation and detachment are easy and convenient, the time needed for maintenance is shortened, and convenience is improved; the connecting block and the limiting block are connected through threads, the filter is rotated through the fixing block, and the filter is separated from the connecting block and the limiting block, so that the whole filter is taken down from the interior of the fixing sleeve, the whole tail gas connecting pipe does not need to be replaced, the maintenance cost is reduced, the maintenance time is shortened, and the practicability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to diesel engine technical field, concretely for a kind of carbon hydrogen injection device for diesel engine. BACKGROUND

[0002] Diesel engine is the engine that burns diesel to obtain energy release, and a large amount of exhaust gas is generated during the use of diesel engine. The exhaust gas is filtered in the filter, and the exhaust gas from the exhaust port of the engine has many solid particles, which can easily block the filter screen in the filter, thereby greatly reducing the use effect of the filter.

[0003] According to the search, the application with patent publication number CN215949630U discloses a carbon hydrogen injection device for diesel engine, which comprises an oil tank, an exhaust output pipe, a central controller and an alarm module. The first connecting pipe is fixedly connected to the side wall of the oil tank. The bottom end of the first connecting pipe is fixedly connected with an oil pump. The output end of the oil pump is fixedly connected with a second connecting pipe. The second connecting pipe is fixedly connected with a three-way servo valve at one end away from the oil pump. The two output ends of the servo valve are respectively connected with a third connecting pipe and a fourth connecting pipe. This can automatically remove the carbon particles on the filter screen and save manpower and resources.

[0004] However, due to the arrangement of the exhaust output pipe and the carbon hydrogen injection nozzle, the carbon hydrogen injection nozzle is arranged inside the exhaust output pipe. When the carbon hydrogen injection nozzle is damaged, it is not convenient to disassemble and replace the carbon hydrogen injection nozzle, which is not convenient to use. At the same time, since the filter is fixedly installed with the output end of the exhaust output pipe, when the filter is damaged, the entire exhaust output pipe and filter need to be replaced, and the filter cannot be disassembled and repaired separately, which increases the maintenance cost.

[0005] Therefore, we propose a carbon hydrogen injection device for diesel engine. CONTENT OF THE UTILITY MODEL

[0006] In view of the shortcomings of the prior art, the utility model provides a carbon hydrogen injection device for diesel engine, which solves the problems of inconvenient installation and disassembly and high maintenance cost of the existing device.

[0007] To achieve the above purpose, the utility model is implemented by the following technical scheme: a carbon hydrogen injection device for diesel engine, comprising an injection pipe and an exhaust output pipe, wherein the output end of the injection pipe extends into the exhaust output pipe;

[0008] The right side of the tail gas output pipe is equipped with a tail gas connecting pipe with matching specifications, a fixed sleeve with matching specifications is fixedly installed on the inner wall of the tail gas connecting pipe, a filter with matching specifications is equipped on the inner wall of the fixed sleeve, the right side of the injection pipe is connected with a carbon-hydrogen injection head with matching specifications through threads, and a threaded groove is formed on the inner wall of the right side of the tail gas output pipe.

[0009] Opposite limiting blocks are fixedly installed on the inner wall of the fixed sleeve, an annular limiting groove is formed on the left side of the limiting block, a filter carbon net is fixedly installed in the filter, a connecting block with matching specifications is fixedly installed on the right side of the filter, the connecting block is connected with the limiting groove through threads, and a fixed block with matching specifications is fixedly installed on the left side of the filter.

[0010] Preferably, the filter carbon net is provided with two groups, and the filter carbon nets have a certain distance, so that the right filter carbon net can block the flame generated by the left filter carbon net, thereby ensuring that the left filter carbon net is fully burned.

[0011] Preferably, a groove with matching specifications and in an annular shape is formed on the left side of the tail gas connecting pipe, and a heat dissipation hole that is in communication with the groove is formed on the right side of the tail gas connecting pipe, so that the heat dissipation effect of the tail gas connecting pipe can be improved, and the temperature of the tail gas connecting pipe is prevented from being too high.

[0012] Preferably, a heat insulation layer is equipped on the outer wall of the groove, so that damage to personnel caused by the high temperature of the outer wall of the tail gas connecting pipe can be prevented.

[0013] Preferably, a sealing gasket is equipped between the tail gas connecting pipe and the tail gas output pipe, so that the sealing property of the connection can be improved.

[0014] Preferably, the filter carbon net and the carbon-hydrogen injection head have a certain distance, so that the filter carbon net can be prevented from damaging the carbon-hydrogen injection head, and the service life of the carbon-hydrogen injection head can be improved.

[0015] 1. The carbon-hydrogen injection device for a diesel engine, through the threads and the fixed sleeve, the tail gas connecting pipe is first taken down through the threads and the locking screw, and then the carbon-hydrogen injection head is conveniently disassembled from the injection pipe through threads, so that the installation and disassembly are simple and convenient, the time required for maintenance is reduced, and the convenience is improved.

[0016] 2、Meanwhile, when the filter is damaged, the connecting block and the limiting block are connected through threads, the filter is rotated through the fixing block, so that the filter and the connecting block are separated from the limiting block, the filter is taken out from the inside of the fixing sleeve as a whole, the installation and dismounting are simple and convenient, the entire tail gas connecting pipe does not need to be replaced, the cost and time of maintenance are reduced, and practicality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the whole of the utility model;

[0018] Figure 2 It is a structural schematic view of the tail gas output pipe of the utility model;

[0019] Figure 3 It is a structural schematic view of the tail gas connecting pipe of the utility model;

[0020] Figure 4 It is a structural schematic view of the fixing sleeve of the utility model;

[0021] Figure 5 It is a structural schematic view of the limiting block of the utility model;

[0022] Figure 6 It is a structural schematic view of the filter of the utility model.

[0023] In the drawing: 1, injection pipe; 2, tail gas output pipe; 3, tail gas connecting pipe; 4, carbon hydrogen injection head; 5, thread groove; 6, fixing sleeve; 7, locking thread; 8, limiting block; 9, limiting groove; 10, filter; 11, connecting block; 12, filter carbon net; 13, fixing block; 14, recess; 15, heat dissipation hole. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment 1: as Figures 1-6As shown: the right side of the tail gas output pipe 2 is equipped with a tail gas connecting pipe 3 of the same size, a fixed sleeve 6 of the same size is fixedly installed on the inner wall of the tail gas connecting pipe 3, a filter 10 of the same size is equipped on the inner wall of the fixed sleeve 6, a hydrocarbon injection head 4 of the same size is connected to the right side of the injection pipe 1 through threads, a threaded groove 5 is formed on the inner wall of the right side of the tail gas output pipe 2, a locking screw 7 of the same size is equipped on the outer wall of the left side of the fixed sleeve 6, through the threaded groove 5 and the fixed sleeve 6, the tail gas connecting pipe 3 is first taken off through the threaded groove 5 and the locking screw 7, and then the hydrocarbon injection head 4 is conveniently detached from the injection pipe 1 through threads, so that the installation and removal are simple and convenient, the time required for maintenance is reduced, and the convenience is improved.

[0026] Embodiment 2: as Figures 2-6 As shown: the inner wall of the fixed sleeve 6 is fixedly installed with opposite limiting blocks 8, the left side of the limiting block 8 is provided with an annular limiting groove 9, a filter carbon net 12 is fixedly installed in the filter 10, a connecting block 11 of the same size is fixedly installed on the right side of the filter 10, the connecting block 11 is connected with the limiting groove 9 through threads, a fixed block 13 of the same size is fixedly installed on the left side of the filter 10, through the limiting block 8 and the connecting block 11, when the filter 10 is damaged, the connecting block 11 and the limiting block 8 are connected through threads, the filter 10 is rotated through the fixed block 13, so that the filter 10 and the connecting block 11 are separated from the limiting block 8, and the filter 10 is taken out from the inside of the fixed sleeve 6 as a whole, so that the installation and removal are simple and convenient, the entire tail gas connecting pipe 3 does not need to be replaced, the cost and time of maintenance are reduced, and the practicability is improved.

[0027] Embodiment 3: as Figures 2-3 As shown: the left side of the tail gas connecting pipe 3 is provided with a groove 14 of the same size and annular, and the right side of the tail gas connecting pipe 3 is provided with a heat dissipation hole 15 communicated with the groove 14, so that the heat dissipation effect of the tail gas connecting pipe 3 is improved, and the temperature of the tail gas connecting pipe 3 is prevented from being too high.

[0028] The working principle and use process of the utility model: when the device needs to work, the tail gas connecting pipe 3 is first taken off through the threaded groove 5 and the locking screw 7, and then the hydrocarbon injection head 4 is conveniently detached from the injection pipe 1 through threads, so that the installation and removal are simple and convenient, the time required for maintenance is reduced, and the convenience is improved, and when the filter 10 is damaged, the connecting block 11 and the limiting block 8 are connected through threads, the filter 10 is rotated through the fixed block 13, so that the filter 10 and the connecting block 11 are separated from the limiting block 8, and the filter 10 is taken out from the inside of the fixed sleeve 6 as a whole, so that the installation and removal are simple and convenient, the entire tail gas connecting pipe 3 does not need to be replaced, the cost and time of maintenance are reduced, and the practicability is improved.

[0029] The basic principle and main features of the present application and the advantages of the present application are shown and described above, for those skilled in the art, obviously the present application is not limited to the details of the above exemplary embodiments, and can be realized in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

[0030] In addition, it should be understood that, although the present application is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A hydrocarbon injection device for diesel engine, comprising an injection pipe (1) and an exhaust output pipe (2), the output end of the injection pipe (1) extends into the exhaust output pipe (2); characterized in that The right side of the exhaust output pipe (2) is equipped with a size-fitted exhaust connecting pipe (3), a size-fitted fixing sleeve (6) is fixedly installed on the inner wall of the exhaust connecting pipe (3), a size-fitted filter (10) is equipped on the inner wall of the fixing sleeve (6), a size-fitted hydrocarbon injection head (4) is connected to the right side of the injection pipe (1) through threads, a thread groove (5) is formed on the inner wall of the right side of the exhaust output pipe (2), and a size-fitted locking thread (7) is equipped on the outer wall of the left side of the fixing sleeve (6); A position-opposed limiting block (8) is fixedly installed on the inner wall of the fixing sleeve (6), an annular limiting groove (9) is formed on the left side of the limiting block (8), a filter carbon net (12) is fixedly installed in the filter (10), a size-fitted connecting block (11) is fixedly installed on the right side of the filter (10), the connecting block (11) is connected to the limiting groove (9) through threads, and a size-fitted fixing block (13) is fixedly installed on the left side of the filter (10).

2. A hydrocarbon injection apparatus for a diesel engine according to claim 1, characterized by: The filter carbon net (12) is provided with two groups.

3. A hydrocarbon injection apparatus for a diesel engine according to claim 1, characterized by: An annular groove (14) is formed on the left side of the exhaust connecting pipe (3), and a heat dissipation hole (15) is formed on the right side of the exhaust connecting pipe (3) and communicates with the groove (14).

4. A hydrocarbon injection apparatus for a diesel engine according to claim 3, characterized in that: A heat insulation layer is equipped on the outer wall of the groove (14).

5. A hydrocarbon injection apparatus for a diesel engine according to claim 1, characterized by: A sealing gasket is equipped between the exhaust connecting pipe (3) and the exhaust output pipe (2).

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