P-type needle valve matching part with ultra-short structure

Abstract

The P-type needle valve matching part of the ultra-short structure comprises an oil sprayer and a valve body, first fastening hoops are symmetrically arranged at the bottom end of the outer side of the oil sprayer, the two first fastening hoops are connected through a first bolt, circular through grooves are symmetrically formed in one sides of the two first fastening hoops, and the two first fastening hoops are connected through a second bolt. The upper end of the outer side of the valve body is symmetrically provided with a first fastening hoop, the upper end of the outer side of the valve body is symmetrically provided with a second fastening hoop, the two second fastening hoops are connected through a second bolt, and one sides of the tops of the two second fastening hoops are symmetrically and fixedly connected with threaded columns. The first fastening hoop and the second fastening hoop can be installed on the outer side of the fuel injector and the outer side of the valve body respectively, then the fuel injector and the valve body can be connected through connection between the first fastening hoop and the second fastening hoop, disassembly and maintenance are convenient, and the use cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of needle valve pairs, and in particular relates to a P-type needle valve pair with an ultra-short structure. Background Art

[0002] The injector body is an important component in the fuel system of a marine diesel engine. The needle valve pair, nozzle, etc. are all installed on the injector body. The needle valve pair and nozzle directly determine the quality of atomization, ensure the perfection of combustion and ensure the thermal efficiency of the diesel engine. It is a key factor affecting the operating conditions of the main engine.

[0003] The existing needle valve pair is integrated in structure and is generally fixed inside the injector. When the needle valve is damaged, the injector can only be replaced together, which increases the cost of use, is inconvenient for maintenance, and reduces work efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a P-type needle valve pair with an ultra-short structure to solve the problem that the existing needle valve pair structure proposed in the above background technology is integrated and generally fixed inside the injector. When the needle valve is damaged, the injector can only be replaced together, which increases the use cost, is inconvenient for maintenance, and reduces the work efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a P-type needle valve pair with an ultra-short structure, including an injector and a valve body, a first fastening hoop is symmetrically arranged at the bottom end of the outer side of the injector, two of the first fastening hoops are connected by a first bolt, and circular through grooves are symmetrically arranged on one side of the two first fastening hoops, a second fastening hoop is symmetrically arranged on the upper end of the outer side of the valve body, the two second fastening hoops are connected by a second bolt, and threaded columns are symmetrically fixedly connected to one side of the top of the two second fastening hoops.

[0006] Preferably, a groove is provided on one side of the top of the valve body, a needle valve body is slidably connected inside the groove, sliding grooves are symmetrically provided on the inner side of the groove, a fixed rod is fixedly connected between the two sides of the sliding grooves, a moving block is slidably connected on the outer side of the fixed rod, a first spring is fixedly connected to one side of the bottom of the sliding groove, the other end of the first spring is fixedly connected to one side of the bottom of the moving block, and the injector and the needle valve body are connected via a second spring.

[0007] Preferably, one end of the second spring is fixedly connected to one side of the bottom of the injector, and the other end of the second spring is movably connected to one side of the top of the needle valve body. A folding hose is fixedly connected to one side of the bottom of the injector.

[0008] Preferably, an oil injection hole is provided on one side of the bottom of the valve body, and a plurality of the oil injection holes are provided.

[0009] Preferably, a first oil inlet hole is arranged at a left end of one side of the top of the needle valve body, and a second oil inlet hole is arranged at a right end of one side of the top of the needle valve body.

[0010] Preferably, the size of the threaded column is the same as the size of the circular through groove.

[0011] Preferably, the size of the bottom of the needle valve body is larger than the size of the oil injection hole.

[0012] Preferably, a rubber pad is fixedly connected to one side of the bottom of the needle valve body.

[0013] Compared with the prior art, the utility model provides a P-type needle valve pair with an ultra-short structure, which has the following beneficial effects:

[0014] 1. The utility model provides a first fastening hoop and a second fastening hoop, so that the first fastening hoop and the second fastening hoop can be installed on the outside of the injector and the valve body respectively, and then the injector and the valve body can be connected to each other through the connection between the first fastening hoop and the second fastening hoop, which is convenient for disassembly and maintenance and reduces the use cost.

[0015] 2. The utility model provides a first spring and a moving block. When the needle valve body moves, the moving block is driven to move, thereby giving the first spring a contraction force, which can play a buffering role and prevent the needle valve body from being damaged due to long-term use.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the main structure of a P-type needle valve pair with an ultra-short structure proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of a fuel injector with an ultra-short P-type needle valve pair proposed by the utility model;

[0020] Figure 3 A schematic diagram of the cross-sectional structure of a fuel injector with an ultra-short P-type needle valve pair proposed by the utility model;

[0021] Figure 4A schematic diagram of the valve body structure of a P-type needle valve pair with an ultra-short structure proposed by the utility model;

[0022] Figure 5 A schematic diagram of the cross-sectional structure of a valve body of a P-type needle valve pair with an ultra-short structure proposed by the utility model;

[0023] Figure 6 This is a schematic diagram of the bottom structure of a P-type needle valve pair with an ultra-short structure proposed by the utility model;

[0024] Figure 7 This is a schematic structural diagram of a first fastening hoop and a second fastening hoop of a P-type needle valve pair with an ultra-short structure proposed by the utility model;

[0025] In the figure: 1. injector; 2. valve body; 3. first fastening hoop; 4. first bolt; 5. circular through groove; 6. second fastening hoop; 7. second bolt; 8. threaded column; 9. groove; 10. needle valve body; 11. sliding groove; 12. fixing rod; 13. moving block; 14. first spring; 15. second spring; 16. folding hose; 17. injection hole; 18. first oil inlet hole; 19. second oil inlet hole; 20. rubber pad. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-7 The utility model provides a technical solution: a P-type needle valve pair with an ultra-short structure, including an injector 1 and a valve body 2, a first fastening hoop 3 is symmetrically arranged at the bottom end of the outer side of the injector 1, the two first fastening hoops 3 are connected by a first bolt 4, and a circular through groove 5 is symmetrically arranged on one side of the two first fastening hoops 3, a second fastening hoop 6 is symmetrically arranged on the upper end of the outer side of the valve body 2, the two second fastening hoops 6 are connected by a second bolt 7, and a threaded column 8 is symmetrically fixedly connected on one side of the top of the two second fastening hoops 6. When in use, the two first fastening hoops 3 can be installed on the lower end of the outer side of the injector 1 through the first bolt 4, and the second fastening hoop 6 can be installed on the upper end of the outer side of the valve body 2 through the second bolt 7 to fix it, and then the threaded column 8 is inserted into the circular through groove 5, and it can be fixed with a nut, so as to complete the connection between the injector 1 and the valve body 2.

[0028] In the utility model, preferably, a groove 9 is provided on one side of the top of the valve body 2, a needle valve body 10 is slidably connected inside the groove 9, sliding grooves 11 are symmetrically provided on the inner side of the groove 9, a fixed rod 12 is fixedly connected between the two sides inside the two sliding grooves 11, a moving block 13 is slidably connected to the outer side of the fixed rod 12, a first spring 14 is fixedly connected to one side of the bottom of the sliding groove 11, and the other end of the first spring 14 is fixedly connected to one side of the bottom of the moving block 13. The injector 1 and the needle valve body 10 are connected by a second spring 15. When the needle valve body 10 moves, the moving block 13 will be driven to move. The first spring 14 can play a buffering role, which can prevent the needle valve body 10 from being damaged due to long-term use.

[0029] In the present invention, preferably, one end of the second spring 15 is fixedly connected to one side of the bottom of the injector 1, and the other end of the second spring 15 is movably connected to one side of the top of the needle valve body 10, and a folding hose 16 is fixedly connected to one side of the bottom of the injector 1.

[0030] In the present utility model, preferably, an oil injection hole 17 is provided at one side of the bottom of the valve body 2, and a plurality of oil injection holes 17 are provided, so as to facilitate oil injection using the oil injection port.

[0031] In the present invention, preferably, a first oil inlet hole 18 is provided at the left end of the top side of the needle valve body 10 , and a second oil inlet hole 19 is provided at the right end of the top side of the needle valve body 10 , so as to facilitate oil inlet into the valve body 2 .

[0032] In the present invention, preferably, the size of the threaded column 8 is the same as the size of the circular through groove 5 , so as to facilitate the connection between the first fastening hoop 3 and the second fastening hoop 6 .

[0033] In the present invention, preferably, the size of the bottom of the needle valve body 10 is larger than the size of the oil injection hole 17 .

[0034] In the present invention, preferably, a rubber pad 20 is fixedly connected to one side of the bottom of the needle valve body 10 , which can effectively block the oil injection hole 17 .

[0035] The working principle and use process of the utility model are as follows: when in use, the two first fastening hoops 3 are installed at the lower end of the outer side of the injector 1 through the first bolts 4, and the second fastening hoop 6 is installed at the upper end of the outer side of the valve body 2 through the second bolts 7 for fixing, and then the threaded column 8 is inserted into the circular through groove 5, which can be fixed with a nut, which is convenient for disassembly and maintenance, and reduces the cost of use.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A P-type needle valve assembly with an ultra-short structure, comprising an injector (1) and a valve body (2), characterized in that: A first fastening hoop (3) is symmetrically arranged at the bottom end of the outer side of the fuel injector (1), the two first fastening hoops (3) are connected by a first bolt (4), and a circular through groove (5) is symmetrically arranged on one side of the two first fastening hoops (3). A second fastening hoop (6) is symmetrically arranged at the upper end of the outer side of the valve body (2), the two second fastening hoops (6) are connected by a second bolt (7), and a threaded column (8) is symmetrically fixedly connected to one side of the top of the two second fastening hoops (6).

2. The ultra-short P-type needle valve pair according to claim 1, characterized in that: A groove (9) is provided on one side of the top of the valve body (2), a needle valve body (10) is slidably connected inside the groove (9), sliding grooves (11) are symmetrically provided inside the groove (9), a fixed rod (12) is fixedly connected between the two sides inside the two sliding grooves (11), a moving block (13) is slidably connected outside the fixed rod (12), a first spring (14) is fixedly connected to one side of the bottom of the sliding groove (11), the other end of the first spring (14) is fixedly connected to one side of the bottom of the moving block (13), and the injector (1) and the needle valve body (10) are connected via a second spring (15).

3. The ultra-short P-type needle valve pair according to claim 2, characterized in that: One end of the second spring (15) is fixedly connected to one side of the bottom of the fuel injector (1), and the other end of the second spring (15) is movably connected to one side of the top of the needle valve body (10). A folding hose (16) is fixedly connected to one side of the bottom of the fuel injector (1).

4. The ultra-short P-type needle valve pair according to claim 1, characterized in that: An oil spray hole (17) is provided on one side of the bottom of the valve body (2), and a plurality of the oil spray holes (17) are provided.

5. The ultra-short P-type needle valve pair according to claim 2, characterized in that: A first oil inlet hole (18) is provided at the left end of one side of the top of the needle valve body (10), and a second oil inlet hole (19) is provided at the right end of one side of the top of the needle valve body (10).

6. The ultra-short P-type needle valve pair according to claim 1, characterized in that: The size of the threaded column (8) is the same as that of the circular through groove (5).

7. The ultra-short P-type needle valve pair according to claim 2, characterized in that: The size of the bottom of the needle valve body (10) is larger than the size of the oil injection hole (17).

8. The ultra-short P-type needle valve pair according to claim 2, characterized in that: A rubber pad (20) is fixedly connected to one side of the bottom of the needle valve body (10).

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