An easily replaceable exhaust gas treatment device for explosion-proof diesel engines

Abstract

The utility model relates to the technical field of diesel exhaust pipes, and discloses an easily replaceable exhaust treatment device for explosion-proof diesel engines, including a DOC installation tube, a connection assembly, an exhaust pipe, and a cooling assembly; the interior of the DOC installation tube is filled with a DOC core, the connection assembly is arranged at both ends of the DOC installation tube, the DOC installation tube is quickly assembled and unassembled with the exhaust pipe through the connection assembly, and the cooling assembly is arranged on the outside of the DOC installation tube. The utility model has the following advantages and effects: when the DOC core needs to be replaced, the fixing bolt is unscrewed, and then the connection ring is slid along the guide rod to compress the elastic tube, so that the DOC installation tube can be removed from the exhaust pipe after the connection ring is separated from the exhaust pipe, and the DOC core in the DOC installation tube can be directly pulled out and replaced by rotating the installation cover, and the replacement operation is simple and convenient, which is conducive to improving the operating efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel tail gas exhaust pipes, in particular to an easily replaceable tail gas treatment device for explosion-proof diesel engines. Background Art

[0002] The diesel engine exhaust pipe is a key emission component in the diesel engine system. Its main function is to collect and discharge the exhaust gas generated during the combustion process. The diesel engine exhaust pipe is an indispensable part of the diesel engine system. It plays an important role in ensuring the normal operation of the engine, reducing noise pollution and meeting environmental protection requirements.

[0003] The DOC in the diesel exhaust pipe is a device used to reduce the emission of carbon monoxide and hydrocarbons in the diesel engine exhaust. When the diesel engine exhaust passes through the DOC, the CO and HC in it can react chemically with the oxygen in the exhaust under the action of the catalyst at a lower temperature to generate pollution-free H2O and CO2. In this way, the DOC can effectively reduce the HC and CO content in the exhaust, thereby achieving the purpose of purifying the exhaust.

[0004] Based on the above situation, the inventors believe that the DOC core often needs to be replaced after being poisoned. The installation and removal operations of the DOC housing and the exhaust pipe are relatively cumbersome and laborious, which affects the efficiency of DOC core replacement. Utility Model Content

[0005] The utility model aims to provide an easily replaceable exhaust gas treatment device for explosion-proof diesel engines, which has the effect of facilitating replacement of a DOC core and improving operating efficiency.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: an easily replaceable exhaust gas treatment device for explosion-proof diesel engines, comprising a DOC installation pipe, a connection assembly, an exhaust pipe and a cooling assembly;

[0007] The DOC installation tube is filled with a DOC core, and the connection components are arranged at both ends of the DOC installation tube. The DOC installation tube is quickly assembled and disassembled with the exhaust pipe through the connection components, and the cooling component is arranged outside the DOC installation tube;

[0008] The connection assembly includes a mounting cover, an elastic tube and a connection ring. The mounting cover is threadedly connected to both ends of the inner wall of the DOC mounting tube. The elastic tube is fixed to the side of the mounting cover away from the DOC mounting tube. The elastic tube is detachably fixed to the exhaust pipe through the connection ring.

[0009] The utility model is further configured as follows: two ends of the DOC core body are in contact with the installation cover, and the DOC installation tube, the installation cover, the elastic tube and the connection ring are kept coaxially arranged.

[0010] By adopting the above technical solution, the stable effect of the DOC core on exhaust gas filtering can be guaranteed.

[0011] The utility model is further configured as follows: the inner wall of the connecting ring is plugged into the exhaust pipe, and a guide component is provided between the connecting ring and the installation cover, so that the connecting ring can move linearly toward or away from the installation cover through the guide component.

[0012] By adopting the above technical solution, when the mounting cover is suspended, the guide assembly can be used to synchronously support the mounting force, thereby improving the mounting stability of the DOC mounting tube.

[0013] The utility model is further configured as follows: the guide assembly includes a guide rod and a support, the guide rod is fixed to the mounting cover, the support is fixedly mounted on the outside of the connecting ring, a guide hole coaxial with the guide rod is opened on the support, the outside of the guide rod is in sliding contact with the guide hole, and a limiting ring is fixedly mounted on the outside of the guide rod after passing through the guide hole.

[0014] By adopting the above technical solution, the connecting ring is allowed to slide along the guide rail toward the position of the installation cover through the support.

[0015] The utility model is further configured as follows: a positioning assembly is provided between the connecting ring and the exhaust pipe, the positioning assembly comprises a positioning groove and a positioning block, the positioning groove is provided on the inner wall of the connecting ring, the positioning block is fixedly arranged on the outer side of the exhaust pipe, and the positioning block is fixedly connected to the inner wall of the positioning groove.

[0016] By adopting the above technical solution, the circumferential positions of the positioning groove and the positioning block can be determined by plugging the two together, which facilitates the fixing operation of the connecting ring and the exhaust pipe.

[0017] The utility model is further configured as follows: the connecting ring is detachably fixed to the exhaust pipe via a fixing assembly.

[0018] The utility model is further configured as follows: the fixing assembly comprises a docking hole and a fixing bolt, the docking hole is opened on the exhaust pipe and the connecting ring, and the fixing bolt is threadedly connected with the exhaust pipe and the connecting ring through the docking hole.

[0019] By adopting the above technical solution, the connecting ring can be aligned and plugged with the exhaust pipe through the positioning component, so that the docking holes on the two can remain aligned.

[0020] The utility model is further configured as follows: the cooling assembly comprises a shell, the shell is coaxially fixed to the outside of the DOC installation tube, and a closed cooling cavity is formed between the inner wall of the shell and the DOC installation tube.

[0021] By adopting the above technical solution, the cooling water is in contact with the outer wall of the DOC installation tube for heat exchange, so that the inside of the DOC installation tube can be cooled and dissipated.

[0022] The utility model is further configured as follows: a connecting pipe communicating with the cooling cavity is fixedly mounted on the shell, and a connecting piece for connecting with an engine cooling pipeline is arranged on the connecting pipe.

[0023] By adopting the above technical solution, the cooling water is sent into the cooling chamber through the connecting pipe at the left end, and the cooling water is sent out to the cooling system through the connecting pipe at the right end for circulation.

[0024] The utility model is further configured as follows: a spacer is provided inside the cooling cavity, the inner and outer surfaces of the spacer are respectively fixed to the exhaust pipe and the outer shell, and an opening is provided on the top of the spacer.

[0025] By adopting the above technical solution, when the cooling water is sent into the cooling cavity through the connecting pipe at the left end, it can be accumulated in the cooling cavity through the spacer.

[0026] The beneficial effects of the utility model are:

[0027] When the DOC core needs to be replaced, the fixing bolts are unscrewed, and then the connecting ring is slid along the guide rod to compress the elastic tube. After the connecting ring is separated from the exhaust pipe, the DOC installation tube can be removed from the exhaust pipe, and the DOC core in the DOC installation tube can be directly pulled out and replaced by rotating the installation cover. The replacement operation is simple and convenient, which is conducive to improving the operating efficiency.

[0028] In addition, a cooling shell is provided outside the DOC installation tube, and the cooling pipeline inputs cooling water into the cooling cavity through the connecting parts to quickly cool down the DOC core. When the DOC core is replaced, it can be quickly separated from the cooling pipeline through the connecting parts, which not only meets the convenience of loading and unloading, but also can improve the heat dissipation effect of the DOC core. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0030] Figure 1 A schematic structural diagram of an easily replaceable exhaust gas treatment device for an explosion-proof diesel engine provided by an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of the connection assembly in the embodiment of the utility model;

[0032] Figure 3 This is a schematic diagram of the structure of the positioning assembly in the embodiment of the utility model;

[0033] Figure 4 It is a schematic diagram of the structure of the cooling assembly in the embodiment of the utility model.

[0034] In the figure, 1. DOC mounting tube; 2. connecting assembly; 3. exhaust pipe; 4. cooling assembly; 11. DOC core; 5. mounting cover; 6. elastic tube; 7. connecting ring; 8. guide assembly; 9. positioning assembly; 10. fixing assembly; 81. guide rod; 82. support; 83. guide hole; 84. limiting ring; 91. positioning groove; 92. positioning block; 101. docking hole; 102. fixing bolt; 41. outer shell; 42. cooling chamber; 43. connecting pipe; 44. connecting piece; 45. spacer; 46. opening. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The utility model embodiment specifically provides an exhaust gas treatment device for explosion-proof diesel engines that is easy to replace. Please refer to Figure 1 , including a DOC installation pipe 1, a connection component 2, an exhaust pipe 3 and a cooling component 4.

[0037] Please refer to Figure 2 and Figure 3 The DOC installation tube 1 is filled with a DOC core 11, and the exhaust gas is filtered by the DOC core 11. The connection components 2 are arranged at both ends of the DOC installation tube 1. The DOC installation tube 1 is quickly assembled and disassembled with the exhaust pipe 3 through the connection components 2. The cooling component 4 is arranged outside the DOC installation tube 1 to cool the exhaust gas in the DOC core 11 through the cooling component 4. The exhaust pipe 3 is used to be connected with the exhaust pipeline of the engine;

[0038] For details, please refer to Figure 2 The connection assembly 2 includes a mounting cover 5, an elastic tube 6 and a connection ring 7. The mounting cover 5 is threadedly connected to both ends of the inner wall of the DOC mounting tube 1, so that the mounting cover 5 can be quickly separated from the DOC mounting tube 1 by rotation. The elastic tube 6 is fixed to the side of the mounting cover 5 away from the DOC mounting tube 1. The elastic tube 6 is detachably fixed to the exhaust pipe 3 through the connection ring 7. The elastic tube 6 is a rubber tube with strong telescopic elasticity, so that when the connection ring 7 needs to be separated from the exhaust pipe 3, the elastic tube 6 can be compressed, so that the connection ring 7 has enough space to move.

[0039] During implementation, both ends of the DOC core 11 are in contact with the mounting cover 5 , and the DOC mounting tube 1 , the mounting cover 5 , the elastic tube 6 and the connecting ring 7 are coaxially arranged to ensure the stable exhaust gas filtering effect of the DOC core.

[0040] For further information, please refer to Figure 2 and Figure 3 The inner wall of the connecting ring 7 is plugged into the exhaust pipe 3 so that the inner wall of the connecting ring 7 can maintain a sealed fit with the exhaust pipe 3. A guide component 8 is provided between the connecting ring 7 and the mounting cover 5. The guiding component 8 allows the connecting ring 7 to move linearly toward or away from the mounting cover 5. The setting of the guiding component 8 can also enable a force transmission connection between the mounting cover 5 and the connecting ring 7, so that when the mounting cover 5 is suspended, it can be synchronously supported by force through the guiding component 8, thereby improving the installation stability of the DOC mounting tube 1.

[0041] Specifically, the guide assembly 8 includes a guide rod 81 and a support 82. The guide rod 81 is fixed to the mounting cover 5. The support 82 is fixed to the outer side of the connecting ring 7. A guide hole 83 coaxial with the guide rod 81 is opened on the support 82. The outer side of the guide rod 81 is in sliding contact with the guide hole 83, and a limiting ring 84 is fixed after the outer side of the guide rod 81 passes through the guide hole 83. When the DOC mounting tube 1 needs to be separated and removed from the exhaust pipe 3, when the connecting ring 7 is unfixed from the exhaust pipe 3, the connecting ring 7 can be slid along the guide rail 81 through the support 82 toward the position of the mounting cover 5, so that the connecting ring 7 can be moved out of the exhaust pipe 3, thereby quickly moving the DOC mounting tube 1 out.

[0042] When the DOC core 11 needs to be replaced, it is only necessary to rotate the installation cover 5 to separate the installation cover 5 from the DOC installation tube 1, then pull the DOC core 11 out of the DOC installation tube 1 and replace it, and then restore the installation cover 5 and install it.

[0043] During implementation, a positioning component 9 is provided between the connecting ring 7 and the exhaust pipe 3. The positioning component 9 is used to keep the connecting ring 7 and the exhaust pipe 7 at their original consistent positions when the connecting ring 7 is connected to the exhaust pipe 7. The positioning component 9 includes a positioning groove 91 and a positioning block 92. The positioning groove 91 is provided on the inner wall of the connecting ring 7, and the positioning block 92 is fixedly arranged on the outer side of the exhaust pipe 3. The positioning block 92 is fixedly connected to the inner wall of the positioning groove 91, so that when the connecting ring 7 is plugged into the exhaust pipe 3, the circumferential position of the two can be determined by plugging the positioning groove 91 and the positioning block 92, so as to facilitate the fixing operation of the connecting ring 7 and the exhaust pipe 3.

[0044] Furthermore, the connecting ring 7 is detachably fixed to the exhaust pipe 3 via a fixing assembly 10 .

[0045] Specifically, the fixing assembly 10 includes a docking hole 101 and a fixing bolt 102. The docking hole 101 is opened on the exhaust pipe 3 and the connecting ring 7. The fixing bolt 102 is threadedly connected to the exhaust pipe 3 and the connecting ring 7 through the docking hole 101, so that the connecting ring 7 can be aligned and plugged with the exhaust pipe 7 through the positioning assembly 9, so that the docking holes 101 on the two can remain aligned. The fixing bolt 102 is loaded and unloaded on the docking hole 101, so that the connecting ring 7 can be fixed or separated from the exhaust pipe 3, which is convenient for loading and unloading of the DOC installation tube 1.

[0046] For further information, please refer to Figure 4 The cooling assembly 4 includes a shell 41, which is coaxially fixed to the outside of the DOC installation tube 1. A closed cooling chamber 42 is formed between the inner wall of the shell 41 and the DOC installation tube 1. The cooling chamber 42 is used for the input and transportation of cooling water, so that the cooling water can be in contact with the outer wall of the DOC installation tube 1 for heat exchange, so that the inside of the DOC installation tube 1 can be cooled and dissipated.

[0047] Among them, a connecting pipe 43 communicating with the cooling chamber 42 is fixedly installed on the outer shell 41, and a connecting piece 44 for connecting to the engine cooling pipeline is arranged on the connecting pipe 43. The type of the connecting piece 44 is a threaded flexible joint, and there are two of them. The connecting pipe 43 is connected to the cooling water delivery pipe of the generator cooling system through the connecting piece 44. The cooling water is delivered to the cooling chamber 42 through the connecting pipe 43 at the left end, and the cooling water is delivered to the cooling system for circulation through the connecting pipe 43 at the right end. The setting of the connecting piece 44 can facilitate quick threaded connection and separation with the cooling system delivery pipeline, thereby facilitating the removal and installation of the DOC installation pipe 1 and improving the convenience of use.

[0048] Among them, the cooling chamber 42 is internally spaced with spacers 45, and the cooling chamber 42 is divided into several different areas by the spacers 45. The inner and outer surfaces of the spacers 45 are respectively fixed to the exhaust pipe 3 and the outer shell 41. An opening 46 is opened on the top of the spacer 45, so that when the cooling water is sent into the cooling chamber 42 through the connecting pipe 43 at the left end, it can be accumulated in the cooling chamber 42 through the spacer 45 until the water level reaches the position of the opening 46 and then is transmitted to the next cooling chamber 42, thereby improving the contact effect between the cooling water and the DOC mounting pipe 1, thereby improving the heat dissipation efficiency.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An easily replaceable exhaust gas treatment device for an explosion-proof diesel engine, characterized in that: It comprises a DOC installation pipe (1), a connection assembly (2), an exhaust pipe (3) and a cooling assembly (4); The DOC installation tube (1) is filled with a DOC core (11), the connection components (2) are arranged at both ends of the DOC installation tube (1), the DOC installation tube (1) is quickly assembled and disassembled with the exhaust pipe (3) through the connection components (2), and the cooling component (4) is arranged outside the DOC installation tube (1); The connection assembly (2) comprises a mounting cover (5), an elastic tube (6) and a connection ring (7); the mounting cover (5) is threadedly connected to the inner wall of the DOC mounting tube (1) at both ends; the elastic tube (6) is fixedly arranged on a side of the mounting cover (5) away from the DOC mounting tube (1); and the elastic tube (6) is detachably fixed to the exhaust pipe (3) via the connection ring (7).

2. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 1, characterized in that: Both ends of the DOC core (11) are in contact with the mounting cover (5), and the DOC mounting tube (1), the mounting cover (5), the elastic tube (6) and the connecting ring (7) are coaxially arranged.

3. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 2, characterized in that: The inner wall of the connecting ring (7) is plugged into the exhaust pipe (3), and a guide component (8) is provided between the connecting ring (7) and the installation cover (5), so that the connecting ring (7) can move linearly toward or away from the installation cover (5) through the guide component (8).

4. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 3, characterized in that: The guide assembly (8) comprises a guide rod (81) and a support (82), wherein the guide rod (81) is fixed to the mounting cover (5), the support (82) is fixedly mounted on the outside of the connecting ring (7), a guide hole (83) coaxial with the guide rod (81) is formed on the support (82), the outside of the guide rod (81) is in sliding contact with the guide hole (83), and a limit ring (84) is fixedly mounted on the outside of the guide rod (81) after passing through the guide hole (83).

5. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 4, characterized in that: A positioning assembly (9) is provided between the connecting ring (7) and the exhaust pipe (3), the positioning assembly (9) comprising a positioning groove (91) and a positioning block (92), the positioning groove (91) being provided on the inner wall of the connecting ring (7), the positioning block (92) being fixedly arranged on the outer side of the exhaust pipe (3), and the positioning block (92) being fixedly connected to the inner wall of the positioning groove (91).

6. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 5, characterized in that: The connecting ring (7) is detachably fixed to the exhaust pipe (3) via a fixing assembly (10).

7. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 6, characterized in that: The fixing assembly (10) comprises a docking hole (101) and a fixing bolt (102); the docking hole (101) is formed on the exhaust pipe (3) and the connecting ring (7); and the fixing bolt (102) is threadedly connected to the exhaust pipe (3) and the connecting ring (7) through the docking hole (101).

8. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 7, characterized in that: The cooling assembly (4) comprises an outer shell (41), which is coaxially fixed to the outside of the DOC installation tube (1), and a closed cooling chamber (42) is formed between the inner wall of the outer shell (41) and the DOC installation tube (1).

9. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 8, characterized in that: A connecting pipe (43) communicating with the cooling chamber (42) is fixedly mounted on the housing (41), and a connecting piece (44) for connecting with an engine cooling pipeline is arranged on the connecting pipe (43).

10. The easily replaceable exhaust gas treatment device for explosion-proof diesel engines according to claim 9, characterized in that: A spacer (45) is provided inside the cooling cavity (42), and the inner and outer surfaces of the spacer (45) are respectively fixed to the exhaust pipe (3) and the outer shell (41), and an opening (46) is provided at the top of the spacer (45).

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