An oil injector having a cooling mechanism

Abstract

The application discloses an oil sprayer with a cooling mechanism and relates to the field of oil sprayers.The oil sprayer body is provided with an annular mounting groove on the outer side, and the outer side of the mounting groove is attached with a first cooling cover, and the front side of the first cooling cover is provided with a second cooling cover.The first cooling cover and the second cooling cover are mounted on the outer side of the mounting groove, and the outer side of the first cooling cover and the second cooling cover is provided with an elastic docking mechanism.The oil sprayer with the cooling mechanism is provided with the mounting groove for providing the mounting position of the cooling structure on the oil sprayer body, and the change of the oil sprayer body is small, and the groove body is directly added to the workpiece surface, so that the original production line can be continuously used, the production difficulty is small, the oil sprayer body is cooled by cooperating with the first cooling cover and the second cooling cover, the first cooling cover and the second cooling cover can change along with the change of the volume of the oil sprayer body, the attachment effect is maintained, and the cooling is stable.

Description

Technical Field

[0001] This invention relates to the field of fuel injector technology, specifically to a fuel injector with a cooling mechanism. Background Technology

[0002] As a precision component used in engines, the performance of fuel injectors affects the engine's operation. During the operation of an internal combustion engine, fuel injectors are exposed to high temperatures for a long time, which can easily lead to overheating. This can cause a decline in the performance of the electronic components and sealing materials inside the fuel injector, as well as problems such as fuel evaporation and carbon buildup, thereby affecting the injection accuracy of the fuel injector and the overall performance of the engine.

[0003] Prior art 1 (Chinese patent application number CN201921245618.9, published on June 5, 2020) discloses a novel fuel injector with a cooling structure, comprising an injector body, a control chamber and a needle valve chamber respectively located at the top and bottom of the body, and an oil outlet at the center of the bottom of the body. The control chamber and the needle valve chamber are separated by a partition. A main oil passage is provided on the side wall of the body, extending from one side of the middle of the body to above the oil outlet. The main oil passage is connected to a branch oil passage through a release hole located inside the partition. The branch oil passage extends from the top to the bottom of the body. Through the design of the injector head cooling flow channel, the heat of the low-temperature fuel injector head can be carried away, thereby cooling the injector head, reducing carbon deposits and coking on the injector head, thus ensuring fuel injection quality and engine performance, improving the service life of the injector head and valve seat, and dissipating heat from the coil, improving... Coil lifespan; Prior art 2 (Chinese patent application number CN201620999561.1, published on April 12, 2017) A heavy machinery injector device with circulating cooling, wherein the top of the injector body is provided with a pressure adjusting nut, a pressure adjusting spring is provided directly below the pressure adjusting nut, a push rod is provided on the lower side of the pressure adjusting spring, the push rod is fixedly connected to a needle valve, an oil passage is provided in the injector body, a return oil pipe is provided on the right side of the injector body, a spiral cooling pipe is provided in the injector body, the spiral cooling pipe is connected to a water tank through a return water pipe, the water tank is connected to a circulating water pump through a suction pipe, the circulating water pump is connected to the spiral cooling pipe through an inlet water pipe, a cooler is provided between the circulating water pump and the injector body, the inlet water pipe is spirally wound around the cooler, a microcontroller is provided at the top of the water tank, and the circulating water pump and the cooler are electrically connected to the microcontroller through wires.

[0004] Currently, when cooling injectors is implemented, installing a cooling structure inside the injector requires significant adjustments and modifications to the injector's internal structure. This can render the original production line unusable and increase the difficulty of manufacturing the injector. When using an external heat dissipation structure, the contact area between the spiral tube structure and the injector is small, and gaps can form between the injector and the cooling structure due to thermal expansion and contraction. This prevents the cooling structure from fully utilizing its effectiveness and reduces the cooling efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an injector with a cooling mechanism to solve the problems mentioned in the background art. These problems include the need for significant adjustments and modifications to the injector's internal structure when cooling is implemented, leading to the inability to continue using the original production line and increasing manufacturing difficulty; and the small contact area between the spiral tube structure and the injector when using an external heat dissipation structure, resulting in gaps between the injector and the cooling structure due to thermal expansion and contraction, thus preventing the cooling structure from fully functioning.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an injector with a cooling mechanism, comprising an injector body, an annular mounting groove on the outer side of the injector body, a first cooling cover attached to the outer side of the mounting groove, and a second cooling cover disposed on the front side of the first cooling cover, the first cooling cover and the second cooling cover being mounted together on the outer side of the mounting groove, an elastic docking mechanism disposed on the outer side of the first cooling cover and the second cooling cover, the first cooling cover and the second cooling cover being tightly attached to the outer side of the mounting groove by the elastic docking mechanism, and a flexible heat-conducting pad connected to the inner side of the first cooling cover and the second cooling cover, the flexible heat-conducting pad being attached to the surface of the mounting groove, a first liquid storage chamber disposed inside the first cooling cover, and a second liquid storage chamber disposed inside the second cooling cover, the second liquid storage chamber being designed with an upper and lower partition structure, and circulating fluid connectors for connecting to external circulating cooling pipes being respectively connected to the upper and lower sides of the second liquid storage chamber.

[0007] To further optimize this technical solution, a nozzle is provided below the injector body, a sealing ring is provided at the connection between the nozzle and the injector body, and a terminal block is provided above the injector body.

[0008] To further optimize this technical solution, the elastic docking mechanism includes a first connecting seat, a second connecting seat, a plug-in block, a connecting groove, and a pull mechanism;

[0009] The first connecting seat is fixed on the left and right sides of the first cooling cover;

[0010] The second connecting seat is fixed on the left and right sides of the second cooling cover;

[0011] The plug-in block is fixed to the rear side of the second connector.

[0012] A connecting groove is formed inside the first connecting seat, and the plug-in block and the connecting groove form a nested connection;

[0013] The pull mechanism is located inside the plug block and controls the connection between the plug block and the connecting slot.

[0014] To further optimize this technical solution, the pull mechanism includes an adjusting block, a strong spring, and an active control mechanism;

[0015] Adjustment blocks are located on the upper and lower sides of the plug-in block, and the outer ends of the adjustment blocks are designed with an inclined structure.

[0016] A powerful spring is fixed below the adjusting block to provide thrust to the adjusting block. When the adjusting block moves to the outside of the first connecting seat, it is pressed by the powerful spring to make the first connecting seat move.

[0017] An active control mechanism is located inside the adjusting block to control its contraction.

[0018] To further optimize this technical solution, the active control mechanism includes a traction rope, a control panel, an adjusting rod, and a guide shaft;

[0019] The traction rope is fixed to the inner end of the adjusting block;

[0020] The control board is set inside the plug-in block and between the plug-in blocks to form a front-to-back sliding structure, and the control board is fixedly connected to the traction rope;

[0021] An adjusting rod is rotatably mounted on the front side of the control panel, and the front end of the adjusting rod passes through the front surface of the second connecting seat to form a threaded connection between the second connecting seat and the second connecting seat.

[0022] The guide shaft is located on the outside of the traction rope to guide its direction.

[0023] To further optimize this technical solution, auxiliary docking mechanisms are provided above both the first and second connecting seats to position the installation of the first and second cooling covers.

[0024] To further optimize this technical solution, the auxiliary docking mechanism includes a positioning block, a first spring, a fixed plate, a positioning groove, a release plate, and a movable block;

[0025] The positioning block is positioned above the first connecting seat and the second connecting seat to form a sliding structure, and the inner side of the positioning block is designed with an inclined structure.

[0026] The first spring is fixed below the positioning block to provide upward thrust to the positioning block;

[0027] The fixing plate is fixed to the surface of the injector body and is located above the positioning block;

[0028] The positioning groove is located below the fixed plate, and the positioning groove and the positioning block form a front-to-back sliding structure.

[0029] The release plate is located inside the positioning groove;

[0030] The movable block is positioned above the fixed plate and is connected to the release plate to control the movement of the release plate.

[0031] To further optimize this technical solution, a docking and communication mechanism is provided between the first cooling cover and the second cooling cover, and an elastic sealing mechanism is provided at the connection between the first cooling cover and the second cooling cover.

[0032] To further optimize this technical solution, the docking and connecting mechanism includes a connecting port, a sealing block, a second spring, a support frame, and a trigger rod;

[0033] The connecting port is opened on the outside of the first liquid storage chamber and the second liquid storage chamber, and the connecting port on the side of the first liquid storage chamber and the connecting port on the side of the second liquid storage chamber are arranged opposite to each other.

[0034] A blocking block is placed inside the connection opening to block it.

[0035] The second spring is connected to the sealing block to provide sealing thrust to the sealing block;

[0036] A support frame is provided at the end of the second spring to support the second spring;

[0037] The trigger rod is fixed to any one of the surfaces of the two opposing sets of sealing blocks, and pushes the sealing block to move.

[0038] To further optimize this technical solution, the elastic sealing mechanism includes a sealing connector, a telescopic tube, a third spring, and a mating interface;

[0039] Sealed connector, outside of the connecting port;

[0040] The telescopic tube is fixed between the sealing connector and the connecting port;

[0041] The third spring, located on the outside of the telescopic tube, provides thrust for the sealing joint;

[0042] The interface is located at the outer end of the connecting port opposite to the sealed butt joint.

[0043] Compared with the prior art, the beneficial effects of the present invention are:

[0044] (1) In this application, only the mounting groove for providing a cooling structure is set on the injector body. The modification to the injector body is small. The groove can be added directly to the surface of the workpiece. The original production line can be used. The production difficulty is small. The first cooling cover and the second cooling cover are used to cool the injector body. The first cooling cover and the second cooling cover can change with the volume of the injector body to maintain their fit and keep the cooling stable.

[0045] (2) The first and second cooling covers can be installed separately on the outside of the injector body. The injector body or the first and second cooling covers can be replaced and maintained separately, reducing the overall cost of the device and making it more energy-efficient and environmentally friendly.

[0046] (3) The flexible heat-conducting pad can always be in close contact with the surface of the injector body by the squeezing effect of the inclined surface of the adjusting block. When it expands due to heat, the adjusting block can be moved under pressure. When the temperature decreases and it contracts, the adjusting block can extend and drive the first connecting seat to move, so that the first cooling cover and the second cooling cover are close to each other and keep them in close contact and stable.

[0047] (4) The configuration of the first and second cooling chambers provides a wide range of cooling and heat absorption effects for the injector body, and the second cooling chamber is a split configuration, which allows the coolant to flow between the first and second cooling chambers.

[0048] (5) The connection port can be blocked by the sealing block. After the first cooling cover and the second cooling cover are connected, the sealing block is pressed and moves, automatically opening the connection port so that the coolant can circulate. The connection of the sealing connector and the interface can also keep the connection stable and prevent leakage. Attached Figure Description

[0049] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0050] Figure 2 This is a schematic diagram of the structure of the present invention viewed from below.

[0051] Figure 3 This is a three-dimensional structural diagram of the injector body of the present invention.

[0052] Figure 4 This is a top view of the first cooling shroud structure of the present invention.

[0053] Figure 5 This is a side view of the first cooling shroud structure of the present invention.

[0054] Figure 6 This is a side view of the second cooling shroud structure of the present invention.

[0055] Figure 7This is a side cross-sectional view of the plug block of the present invention.

[0056] Figure 8 This is a schematic diagram of the main cross-sectional structure of the fixed disk of the present invention.

[0057] Figure 9 This is a side sectional view of the second cooling shroud of the present invention.

[0058] Figure 10 This is a side cross-sectional view of the connection between the first and second cooling covers of the present invention.

[0059] In the diagram: 1. Injector body; 2. Nozzle; 3. Terminal block; 4. Mounting slot; 5. First cooling cover; 6. First connecting seat; 7. Second cooling cover; 8. Second connecting seat; 9. Flexible heat-conducting pad; 10. Circulating fluid connector; 11. Insert block; 12. Connecting slot; 13. Adjusting block; 14. Strong spring; 15. Traction rope; 16. Control panel; 17. Adjusting rod; 18. Guide shaft; 19. Positioning block; 20. First spring; 21. Fixed plate; 22. Positioning slot; 23. Release plate; 24. Movable block; 25. First liquid storage chamber; 26. Second liquid storage chamber; 27. Connecting port; 28. Sealing block; 29. ​​Second spring; 30. Support frame; 31. Trigger rod; 32. Sealing connector; 33. Telescopic tube; 34. Third spring; 35. Connecting interface. Detailed Implementation

[0060] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] Example 1: The present invention provides the following technical solution: an injector with a cooling mechanism, such as... Figure 1-3 and Figure 9As shown, the device includes an injector body 1. An annular mounting groove 4 is formed on the outer side of the injector body 1. A first cooling cover 5 is fitted to the outer side of the mounting groove 4. A second cooling cover 7 is positioned in front of the first cooling cover 5. The first and second cooling covers 5 and 7 are mounted together on the outer side of the mounting groove 4. A spring-loaded connection mechanism is provided on the outer sides of the first and second cooling covers 5 and 7. The first and second cooling covers 5 and 7 are tightly fitted to the outer side of the mounting groove 4 via the spring-loaded connection mechanism. The inner sides of the first and second cooling covers 5 and 7 are connected by... The flexible heat-conducting pad 9 and the surface of the mounting groove 4 are attached. The first cooling cover 5 is provided with a first liquid storage chamber 25. The second cooling cover 7 is provided with a second liquid storage chamber 26. The second liquid storage chamber 26 is designed with an upper and lower partition structure. The upper and lower sides of the second liquid storage chamber 26 are respectively connected to the external circulating cooling pipe and the circulating fluid connector 10. The nozzle 2 is provided below the injector body 1. A sealing ring is provided at the connection between the nozzle 2 and the injector body 1. The terminal block 3 is provided above the injector body 1.

[0062] The first cooling cover 5 and the second cooling cover 7 are installed on the outside of the injector body 1 through the mounting groove 4. The first cooling cover 5 and the second cooling cover 7 are stably installed through the elastic docking mechanism. The two sets of circulating fluid connectors 10 on the outside of the second cooling cover 7 are respectively connected to the external cooling inlet pipe and the drain pipe. The heat of the injector body 1 during operation is conducted to the first liquid storage chamber 25 and the second liquid storage chamber 26 through the flexible heat-conducting pad 9, thereby achieving cooling of the injector body 1.

[0063] Example 2: Based on Example 1, as follows Figure 4-8As shown, the elastic docking mechanism further discloses a first connecting seat 6, a second connecting seat 8, a plug-in block 11, a connecting groove 12, and a pull mechanism. The first connecting seat 6 is fixed on the left and right sides of the first cooling cover 5, the second connecting seat 8 is fixed on the left and right sides of the second cooling cover 7, the plug-in block 11 is fixed on the rear side of the second connecting seat 8, and the connecting groove 12 is formed inside the first connecting seat 6. The plug-in block 11 and the connecting groove 12 form a nested connection. The pull mechanism is set inside the plug-in block 11 to control the connection between the plug-in block 11 and the connecting groove 12. The pull mechanism includes an adjusting block 13, a strong spring 14, and an active control mechanism. The adjusting block 13... The adjusting block 13 is positioned on the upper and lower sides of the plug-in block 11, and its outer end is designed with an inclined structure. A strong spring 14 is fixed below the adjusting block 13 to provide thrust. When the adjusting block 13 moves to the outside of the first connecting seat 6, it is pressed by the strong spring 14 to move it. An active control mechanism is located inside the adjusting block 13 to control its retraction. The active control mechanism includes a traction rope 15, a control plate 16, an adjusting rod 17, and a guide shaft 18. The traction rope 15 is fixed to the inner end of the adjusting block 13. The control plate 16 is located inside the plug-in block 11 and slides back and forth between the plug-in block 11 and the plug-in block 11. The structure includes a control plate 16 and a traction rope 15 fixedly connected. An adjusting rod 17 is rotatably mounted on the front side of the control plate 16, and the front end of the adjusting rod 17 passes through the front surface of the second connecting seat 8 to form a threaded connection between the second connecting seat 8 and the second connecting seat 8. A guide shaft 18 is set on the outside of the traction rope 15 to guide the direction of the traction rope 15. An auxiliary docking mechanism is set above the first connecting seat 6 and the second connecting seat 8 to position the installation of the first cooling cover 5 and the second cooling cover 7. The auxiliary docking mechanism includes a positioning block 19, a first spring 20, a fixed plate 21, a positioning groove 22, a release plate 23, and a movable block 24. The positioning block 19 is set with... The first connecting seat 6 and the second connecting seat 8 form a sliding structure above them, and the inner side of the positioning block 19 is designed with an inclined structure. The first spring 20 is fixed below the positioning block 19 to provide an upward thrust to the positioning block 19. The fixing plate 21 is fixed on the surface of the injector body 1 and is located above the positioning block 19. The positioning groove 22 is opened below the fixing plate 21 and forms a front-to-back sliding structure between the positioning groove 22 and the positioning block 19. The release plate 23 is set inside the positioning groove 22. The movable block 24 is set above the fixing plate 21 and is connected to the release plate 23 to control the movement of the release plate 23.

[0064] When installing the first cooling cover 5 and the second cooling cover 7, the first cooling cover 5 or the second cooling cover 7 can be installed on the outside of the mounting slot 4 first. Before installation, first rotate the adjusting rod 17 to move the control plate 16. The control plate 16 pulls the adjusting block 13 through the traction rope 15 to move it. When the adjusting block 13 is retracted and the first cooling cover 5 is installed on the outside of the mounting slot 4, the positioning block 19 is compressed and retracted. After the positioning block 19 moves below the positioning slot 22, it extends again and connects with the positioning slot 22, completing the positioning of the first cooling cover 5. Then, the second cooling cover 7 is installed. After installation, the plug-in block 11 passes through the connecting slot 12. At this time, it can be rotated. Adjusting rod 17 releases the pull of control plate 16 on traction rope 15. Strong spring 14 pushes adjusting block 13 to move. Adjusting block 13 presses the first connecting seat 6 to move it. The second cooling cover 7 and the first cooling cover 5 move closer to each other. When the volume of the injector body 1 changes, the first cooling cover 5 and the second cooling cover 7 move accordingly. Adjusting block 13 moves telescopically under the action of strong spring 14 to adapt to the change in their spacing and keep them in close contact. When disassembling, adjusting block 13 can be retracted first, then movable block 24 can be pressed, and positioning block 19 can be pushed out of positioning groove 22 through release plate 23, so that the first cooling cover 5 and the second cooling cover 7 can be removed.

[0065] Example 3: Based on Example 1, as follows Figure 5-6 and Figure 10 As shown, a docking and connecting mechanism is further disclosed between the first cooling cover 5 and the second cooling cover 7, and an elastic sealing mechanism is provided at the connection between the first cooling cover 5 and the second cooling cover 7. The docking and connecting mechanism includes a connecting port 27, a sealing block 28, a second spring 29, a support frame 30, and a trigger rod 31. The connecting port 27 is opened on the outside of the first liquid storage chamber 25 and the second liquid storage chamber 26, and the connecting ports 27 on the side of the first liquid storage chamber 25 and the second liquid storage chamber 26 are arranged opposite to each other. The sealing block 28 is disposed on the inside of the connecting port 27 to seal the connecting port 27. The second spring 29 is connected to the sealing block 28 to form a seal. The plug 28 provides sealing thrust, the support frame 30 is set at the end of the second spring 29 to provide support for the second spring 29, the trigger rod 31 is fixed to any one of the surfaces of the two sets of opposite plug blocks 28 and pushes the plug block 28 to move, the elastic sealing mechanism includes a sealing connector 32, a telescopic tube 33, a third spring 34 and a mating interface 35, the sealing connector 32 is on the outside of the connecting port 27, the telescopic tube 33 is fixed between the sealing connector 32 and the connecting port 27, the third spring 34 is set on the outside of the telescopic tube 33 to provide thrust for the sealing connector 32, and the mating interface 35 is opened at the outer end of the connecting port 27 opposite to the sealing connector 32.

[0066] When the first cooling cover 5 and the second cooling cover 7 are not connected, the sealing block 28 blocks the connecting port 27. After connection, the trigger rod 31 pushes the sealing block 28 to open the connecting port 27, so that the first liquid storage chamber 25 and the second liquid storage chamber 26 are connected. During connection, the sealing connector 32 is inserted into the interface 35 to seal the connection. When the distance between the first cooling cover 5 and the second cooling cover 7 changes in the future, the sealing connector 32 can maintain a stable connection with the interface 35 under the action of the third spring 34 and the telescopic tube 33 to prevent leakage at the connection.

[0067] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0068] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0069] Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. An injector with a cooling mechanism, comprising an injector body (1); Its features are: The injector body (1) has an annular mounting groove (4) on its outer side, and a first cooling cover (5) is attached to the outer side of the mounting groove (4). A second cooling cover (7) is provided on the front side of the first cooling cover (5). The first cooling cover (5) and the second cooling cover (7) are mounted around the outer side of the mounting groove (4). A spring-loaded coupling mechanism is provided on the outer side of the first cooling cover (5) and the second cooling cover (7). The first cooling cover (5) and the second cooling cover (7) are tightly attached to the mounting groove (4) by the spring-loaded coupling mechanism. On the outside, and on the inside of the first cooling cover (5) and the second cooling cover (7), a flexible heat-conducting pad (9) is connected. The flexible heat-conducting pad (9) and the surface of the mounting groove (4) are in contact. The first cooling cover (5) is provided with a first liquid storage chamber (25). The second cooling cover (7) is provided with a second liquid storage chamber (26). The second liquid storage chamber (26) is designed with an upper and lower partition structure. The upper and lower sides of the second liquid storage chamber (26) are respectively connected to a circulating liquid connector (10) for connecting with the external circulating cooling pipe. The elastic docking mechanism includes a first connecting seat (6), a second connecting seat (8), a plug-in block (11), a connecting groove (12), and a pull mechanism; The first connecting seat (6) is fixed on the left and right sides of the first cooling cover (5); The second connecting seat (8) is fixed on the left and right sides of the second cooling cover (7); The plug-in block (11) is fixed to the rear side of the second connector (8); A connecting groove (12) is formed inside the first connecting seat (6), and a nested connection is formed between the plug block (11) and the connecting groove (12); A pull mechanism is provided inside the plug-in block (11) to control the connection between the plug-in block (11) and the connecting slot (12); The pull mechanism includes an adjusting block (13), a strong spring (14), and an active control mechanism; Adjustment block (13) is set on the upper and lower sides of plug block (11), and the outer end of adjustment block (13) is designed with an inclined structure. A strong spring (14) is fixed below the adjusting block (13) to provide thrust to the adjusting block (13). The adjusting block (13) moves to the outside of the first connecting seat (6) and is squeezed by the strong spring (14) to make it move. An active control mechanism is located inside the regulating block (13) to control the contraction of the regulating block (13); The active control mechanism includes a traction rope (15), a control panel (16), an adjusting rod (17), and a guide shaft (18). The traction rope (15) is fixed to the inner end of the adjusting block (13); The control plate (16) is set inside the plug-in block (11) and between the plug-in block (11) to form a front-to-back sliding structure, and the control plate (16) and the traction rope (15) are fixedly connected. Adjusting rod (17) is rotatably mounted on the front side of control plate (16), and the front end of adjusting rod (17) passes through the front surface of second connecting seat (8) and forms a threaded connection between the second connecting seat (8); A guide shaft (18) is set on the outside of the traction rope (15) to guide the direction of the traction rope (15); An auxiliary docking mechanism is provided above the first connecting seat (6) and above the second connecting seat (8) to position the installation of the first cooling cover (5) and the second cooling cover (7); The auxiliary docking mechanism includes a positioning block (19), a first spring (20), a fixed plate (21), a positioning groove (22), a release plate (23), and a movable block (24). The positioning block (19) is set above the first connecting seat (6) and the second connecting seat (8) to form a sliding structure with them, and the inner side of the positioning block (19) is designed with an inclined structure. The first spring (20) is fixed below the positioning block (19) to provide an upward thrust to the positioning block (19); The fixing plate (21) is fixed on the surface of the injector body (1) and the fixing plate (21) is located above the positioning block (19); The positioning groove (22) is located below the fixed plate (21), and the positioning groove (22) and the positioning block (19) form a front-to-back sliding structure; Release plate (23) is set inside positioning groove (22); The movable block (24) is positioned above the fixed plate (21), and the movable block (24) is connected to the release plate (23) to control the movement of the release plate (23).

2. The fuel injector with a cooling mechanism according to claim 1, characterized in that: A nozzle (2) is provided below the injector body (1), a sealing ring is provided at the connection between the nozzle (2) and the injector body (1), and a terminal block (3) is provided above the injector body (1).

3. The fuel injector with a cooling mechanism according to claim 1, characterized in that: A docking and connecting mechanism is provided between the first cooling cover (5) and the second cooling cover (7), and an elastic sealing mechanism is provided at the connection between the first cooling cover (5) and the second cooling cover (7).

4. The fuel injector with a cooling mechanism according to claim 3, characterized in that: The docking and connecting mechanism includes a connecting port (27), a sealing block (28), a second spring (29), a support frame (30), and a trigger rod (31). The connecting port (27) is opened on the outside of the first liquid storage chamber (25) and the second liquid storage chamber (26), and the connecting port (27) on the side of the first liquid storage chamber (25) and the connecting port (27) on the side of the second liquid storage chamber (26) are arranged opposite to each other; A blocking block (28) is placed inside the connecting port (27) to block the connecting port (27); The second spring (29) is connected to the sealing block (28) to provide sealing thrust to the sealing block (28); A support frame (30) is provided at the end of the second spring (29) to provide support for the second spring (29); The trigger rod (31) fixes any one of the surfaces of the two opposing sets of sealing blocks (28) and pushes the sealing block (28) to move.

5. A fuel injector with a cooling mechanism according to claim 4, characterized in that: The elastic sealing mechanism includes a sealing connector (32), a telescopic tube (33), a third spring (34), and a connector (35). The sealing joint (32), the outer side of the connecting port (27); The telescopic tube (33) is fixed between the sealing connector (32) and the connecting port (27); The third spring (34) is located on the outside of the telescopic tube (33) to provide thrust to the sealing joint (32); The interface (35) is located at the outer end of the communication port (27) opposite to the sealing connector (32).

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