Bypass two-way EGR (Exhaust Gas Recirculation) valve

Abstract

The utility model relates to the technical field of EGR valves, and discloses a bypass two-way EGR valve which comprises a valve body and sealing structures, the sealing structures are installed on the outer walls of the two ends of the valve body, the valve body comprises a runner pipe, flanges are welded to the two ends of the runner pipe, connectors are installed on the outer walls of the flanges, threaded grooves are formed in the outer walls of the connectors, and the threaded grooves are communicated with the runner pipe. The outer walls of the threaded grooves are in threaded connection with one-way pipes, the inner walls of the two one-way pipes are rotationally connected with valves, and one side of one of the one-way pipes is provided with a fuel pipe connector. According to the EGR valve, due to the arrangement of the one-way pipe and the threaded groove, when the inner wall of the valve body needs to be cleaned, the one-way pipe is rotated, the one-way pipe is detached from the threaded groove, cleaning liquid flows into the valve through the connector, then the flow speed of the liquid is adjusted through the accelerator, the inner wall of the EGR valve can be cleaned up, and the flexibility of the EGR valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of EGR valve equipment, in particular to a bypassable dual-path EGR valve. Background Art

[0002] Exhaust gas recirculation is the process of introducing part of the exhaust gas into the intake pipe during the operation of the engine, mixing it with fresh air and then entering the engine cylinder for reburning. This method is currently an effective measure to reduce carbon monoxide emissions. However, excessive exhaust gas in the circulation will affect the normal operation of the engine, especially when idling, at low speed and light load, and when the engine is in a cold state. The recirculated exhaust gas will significantly reduce the performance of the engine. Therefore, people set an EGR valve in the exhaust gas recirculation to automatically adjust the amount of exhaust gas participating in the exhaust gas recirculation according to changes in engine operating conditions. In order to meet the requirements of both reducing the content of automobile exhaust pollutants and not reducing the performance indicators of the engine, the control requirements of the EGR valve are very precise. However, the sealing performance of the intake pipe connection of the existing EGR valve is poor, and gas is easy to leak from the connection, causing safety hazards.

[0003] The application number is CN202022354362.4, which discloses an EGR valve, including an EGR valve body, the bottom of the EGR valve body is connected to an intake pipe, the left side of the intake pipe is connected to an outlet pipe, the intake pipe and the outlet pipe are fixedly connected by threads, and the surface of the intake pipe is movably connected to a connecting rod by a rotating rod. The utility model connects the intake pipe and the outlet pipe by threads through the cooperation of the intake pipe, the outlet pipe, the connecting rod, the clamping block, the buffer mechanism, the sealing gasket, the groove, the second spring, the fixing plate and the limit block, and then moves the clamping block to the left side so that the two clamping blocks are engaged, and then rotates the bolt to insert the bolt into the positioning hole to limit the two clamping blocks, and through the action of the first spring and the buffer plate, the sealing gasket is fitted with the intake pipe to avoid gas leakage through the connection between the intake pipe and the outlet pipe, and the sealing effect is good, thereby improving the sealing effect and solving the problem of poor sealing effect of the existing device.

[0004] The EGR valve disclosed in the above document has the following defects: when the EGR valve is in use, the gas entering the valve needs to be converted and cooled before being recycled and discharged for use. When the gas flows in the valve, harmful substances in the gas will also adhere to and accumulate on the inner wall of the valve. If the impurities are not cleaned in time, other gases can easily carry the impurities away and discharge them for combustion, thereby reducing the purity of the fuel gas.

[0005] It can be seen from this that the existing EGR valve does not have the function of conveniently cleaning the inner wall of the valve body, and it is necessary to improve the existing deficiencies and provide a function that can conveniently clean the inner wall of the valve body. Utility Model Content

[0006] The purpose of the utility model is to provide a bypassable dual-path EGR valve to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0008] The utility model is a bypassable dual-path EGR valve, comprising a valve body and a sealing structure, wherein the sealing structure is installed on the outer walls at both ends of the valve body, the valve body comprises a flow pipe, flanges are welded at both ends of the flow pipe, a connector is installed on the outer wall of the flange, a threaded groove is provided on the outer wall of the connector, a one-way pipe is threadedly connected to the outer wall of the threaded groove, valves are rotatably connected to the inner walls of two one-way pipes, and a fuel pipe joint is provided on one side of one of the one-way pipes. The purpose of such a setting is that during the use of the EGR valve, the fuel gas enters a one-way pipe through the fuel pipe joint, the gas flow rate is adjusted by the valve, the gas enters the circulation pipe through the one-way pipe and the connector, the accelerator accelerates the gas, the accelerated gas flows forward to the cooler, the cooler cools the gas, the gas flows through the circulation pipe to another connector, the gas is cooled by the connector and the inner wall of the one-way pipe, the gas flows rapidly in the valve, the connecting plate is used to enable the sensor to sense the airflow position inside the circulation pipe through the mounting block, the operation of the cooler and the accelerator is adjusted by the sensor, and finally the gas is discharged through the fuel pipe discharge pipe. When it is necessary to clean the inner wall of the valve body, the one-way pipe is rotated and the one-way pipe is removed from the threaded groove, the cleaning liquid flows inward into the valve through the connector, and the liquid flow rate is adjusted by the accelerator to clean the inner wall of the EGR valve, thereby improving the flexibility of the EGR valve.

[0009] Furthermore, a discharge pipe is installed on the top inner wall of the flow pipe. The purpose of this arrangement is that during the use of the EGR valve, the operation of the cooler and the accelerator is adjusted by the sensor, and finally the gas is discharged through the fuel pipe discharge pipe.

[0010] Furthermore, a cooler is installed on the inner wall of the flow pipe near the fuel pipe joint. The purpose of this arrangement is that the cooler cools the gas during the use of the EGR valve.

[0011] Furthermore, a connection plate is welded on the upper surface of the flow pipe, an accelerator is installed on the inner wall of the flow pipe, and the connection plate is connected to the accelerator. The purpose of this arrangement is that during the use of the EGR valve, the accelerator accelerates the gas, and the connection plate is used to allow the sensor to sense the airflow position inside the flow pipe through the mounting block.

[0012] Furthermore, a mounting block is welded on the inner wall of one side of the connection plate. The purpose of such arrangement is that during the use of the EGR valve, the mounting block is used to position and install the sensor in the flow pipe for operation.

[0013] Furthermore, a sensor is installed on the inner wall of the mounting block, and one end of the sensor extends to the inside of the flow pipe. The purpose of this arrangement is to adjust the operation of the cooler and the accelerator through the sensor during the use of the EGR valve.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model provides a one-way pipe and a threaded groove. When the inner wall of the valve body needs to be cleaned, the one-way pipe is rotated and removed from the threaded groove. The cleaning liquid flows into the valve through the connector. The liquid flow rate is adjusted by the accelerator to clean the inner wall of the EGR valve, thereby improving the flexibility of the EGR valve.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the connector portion of the utility model;

[0021] Figure 4 This is a schematic diagram of the bottom structure of the utility model;

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] In the figure: 1. valve body; 100. discharge pipe; 101. flow pipe; 102. cooler; 103. connection plate; 104. mounting block; 105. sensor; 106. accelerator; 107. flange; 2. sealing structure; 201. connector; 202. threaded groove; 203. one-way pipe; 204. valve; 205. fuel pipe joint. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0025] See also Figure 1 - Figure 4 As shown, the utility model is a bypassable dual-path EGR valve, comprising a valve body 1 and a sealing structure 2, the sealing structure 2 being mounted on the outer walls at both ends of the valve body 1, the valve body 1 comprising a flow pipe 101, flanges 107 being welded at both ends of the flow pipe 101, a connector 201 being mounted on the outer wall of the flange 107, a threaded groove 202 being provided on the outer wall of the connector 201, a one-way pipe 203 being threadedly connected to the outer wall of the threaded groove 202, valves 204 being rotatably connected to the inner walls of the two one-way pipes 203, a fuel pipe joint 205 being provided on one side of one of the one-way pipes 203. The purpose of such arrangement is that during the use of the EGR valve, the fuel gas enters a one-way pipe 203 through the fuel pipe joint 205, the flow rate of the gas is adjusted by the valve 204, the gas enters the flow pipe 101 through the one-way pipe 203 and the connector 201, the accelerator 106 accelerates the gas, the accelerated gas flows forward to the cooler 102, the cooler 102 cools the gas, the gas flows through the flow pipe 101 to another connector 201, the gas is cooled by the connector 201 and the inner wall of the one-way pipe 203, and the gas flows rapidly in the valve. The connecting plate 103 is used to make the sensor 105 sense the airflow position inside the flow pipe 101 through the mounting block 104, and the operation of the cooler 102 and the accelerator 106 is adjusted by the sensor 105. Finally, the gas is discharged through the fuel pipe discharge pipe 100. When it is necessary to clean the inner wall of the valve body 1, the one-way tube 203 is rotated and the one-way tube 203 is removed from the threaded groove 202. The cleaning liquid flows into the valve through the connector 201, and then the liquid flow rate is adjusted by the accelerator 106 to clean the inner wall of the EGR valve, thereby improving the flexibility of the EGR valve.

[0026] An exhaust pipe 100 is installed on the top inner wall of the flow pipe 101. The purpose of this arrangement is that during the use of the EGR valve, the operation of the cooler 102 and the accelerator 106 is adjusted by the sensor 105, and finally the gas is discharged through the fuel pipe exhaust pipe 100.

[0027] A cooler 102 is installed on the inner wall of the flow pipe 101 near the fuel pipe joint 205. The purpose of this arrangement is that the cooler 102 cools the gas during the use of the EGR valve.

[0028] A connection plate 103 is welded on the upper surface of the flow pipe 101, and an accelerator 106 is installed on the inner wall of the flow pipe 101. The connection plate 103 is connected to the accelerator 106. The purpose of this arrangement is that during the use of the EGR valve, the accelerator 106 accelerates the gas, and the connection plate 103 is used to allow the sensor 105 to sense the airflow position inside the flow pipe 101 through the mounting block 104.

[0029] A mounting block 104 is welded on the inner wall of one side of the connection plate 103. The purpose of such arrangement is that during the use of the EGR valve, the mounting block 104 is used to position and install the sensor 105 in the flow pipe 101 for operation.

[0030] An inductor 105 is mounted on the inner wall of the mounting block 104, and one end of the inductor 105 extends to the inside of the flow pipe 101. The purpose of such arrangement is to adjust the operation of the cooler 102 and the accelerator 106 through the inductor 105 during the use of the EGR valve.

[0031] When in use, during the use of the EGR valve, the fuel gas enters a one-way pipe 203 through the fuel pipe joint 205, the flow rate of the gas is adjusted by the valve 204, the gas enters the flow pipe 101 through the one-way pipe 203 and the connector 201, the accelerator 106 accelerates the gas, the accelerated gas flows forward to the cooler 102, the cooler 102 cools the gas, the gas flows through the flow pipe 101 to another connector 201, the gas is cooled by the connector 201 and the inner wall of the one-way pipe 203, and the gas flows rapidly in the valve. The connecting plate 103 is used to enable the sensor 105 to sense the air flow position inside the flow pipe 101 through the mounting block 104, and the operation of the cooler 102 and the accelerator 106 is adjusted by the sensor 105. Finally, the gas is discharged through the fuel pipe discharge pipe 100. When it is necessary to clean the inner wall of the valve body 1, the one-way tube 203 is rotated and the one-way tube 203 is removed from the threaded groove 202. The cleaning liquid flows into the valve through the connector 201, and then the liquid flow rate is adjusted by the accelerator 106 to clean the inner wall of the EGR valve, thereby improving the flexibility of the EGR valve.

[0032] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A bypassable dual-path EGR valve, comprising a valve body (1) and a sealing structure (2), characterized in that: The sealing structure (2) is mounted on the outer walls at both ends of the valve body (1); the valve body (1) comprises a circulation pipe (101); flanges (107) are welded at both ends of the circulation pipe (101); a connector (201) is mounted on the outer wall of the flange (107); a thread groove (202) is provided on the outer wall of the connector (201); a one-way pipe (203) is threadedly connected to the outer wall of the thread groove (202); valves (204) are rotatably connected to the inner walls of the two one-way pipes (203); a fuel pipe joint (205) is provided on one side of one of the one-way pipes (203).

2. The bypassable dual-path EGR valve according to claim 1, characterized in that: A discharge pipe (100) is installed on the top inner wall of the circulation pipe (101).

3. The bypassable dual-path EGR valve according to claim 1, characterized in that: A cooler (102) is installed on the inner wall of the circulation pipe (101) close to the fuel pipe joint (205).

4. The bypassable dual-path EGR valve according to claim 1, characterized in that: A connection plate (103) is welded on the upper surface of the circulation tube (101), an accelerator (106) is installed on the inner wall of the circulation tube (101), and the connection plate (103) and the accelerator (106) are connected.

5. The bypassable dual-path EGR valve according to claim 4, characterized in that: A mounting block (104) is welded to an inner wall of one side of the connection plate (103).

6. The bypassable dual-path EGR valve according to claim 5, characterized in that: A sensor (105) is mounted on the inner wall of the mounting block (104), and one end of the sensor (105) extends into the interior of the flow tube (101).

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