Electric control fuel injection pump pressure stabilizing device

Abstract

The utility model discloses an electric control fuel injection pump pressure stabilizing device which comprises a fuel injection pump, a liquid inlet pipe is arranged on one side of the fuel injection pump, a second connecting pipe is arranged at the bottom of the liquid inlet pipe, a backflow pipe is arranged at the bottom of the second connecting pipe, and a liquid outlet pipe is arranged on the other side of the fuel injection pump. Pressure stabilizing assemblies are arranged at the bottom of the interior of the liquid outlet pipe and the interior of the second connecting pipe correspondingly, a mounting plate is arranged in the liquid outlet pipe, and a connecting rod is arranged on one side of the mounting plate. Under the cooperation of the first connecting pipe, the baffle, the sealing plug, the liquid through hole, the mounting pipe, the through groove, the fixing plate, the spring, the sliding rod and the backflow pipe, when the internal pressure of the pump machine is large in the using process, the backflow pipe can be opened, then oil flows back to the liquid inlet pipe, and therefore pressure is effectively stabilized, and the service life of the pump machine is prolonged. The situation that the pressure is too large or too small is avoided, and the situation that the connected pipeline is exploded due to the fact that the pressure is too large can also be prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil injection pump pressure stabilizing technical field, concretely is a kind of electric control oil injection pump pressure stabilizing device. BACKGROUND

[0002] Oil injection pump is an important component on automobile diesel engine, and the oil injection pump assembly is usually composed of an integral body by installing oil injection pump, speed regulator and other components together, and in order to avoid pipe explosion of the oil injection pump in the process of pumping oil, pressure stabilizing device is needed for pressure stabilization;

[0003] The existing authorized publication number "CN222067511U" is a kind of fire pump pressure stabilizing device, including pressure stabilizing carrier frame, adjusting assembly is installed on the side of pressure stabilizing carrier frame, and protection assembly is connected to the surface of pressure stabilizing carrier frame, the utility model discloses adjusting assembly is set, and the positioning effect of rotating screw rod positioning block can limit the rotation of screw rod in support, and under the meshing connection between screw rod and transmission block, because the thread direction of the surface of the two ends of screw rod is opposite, and then two transmission blocks can drive positioning pressure frame to move towards each other, and the position of two positioning pressure frames is controlled, so that it is more convenient to use;The utility model discloses protection assembly, so that the plug plate is inserted into the socket in the sealing plate, the plug plate is aligned with the lock seat, and the bolt is locked into the interior, the protective cover is installed and fixed on the outside of gear transmission mechanism, which can play a good dustproof protection effect, prolong the service life of the device, so that the use effect of the fire pump pressure stabilizing device is better.

[0004] The device only uses pressure stabilizing sheet to stabilize water pressure during the use of pump machine, but this kind of pressure stabilizing method is only to buffer during the flow of liquid, but when the amount of water flow is too large, pipe explosion may occur. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of electric control oil injection pump pressure stabilizing device to solve the problems in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of electric control oil injection pump pressure stabilizing device, including oil injection pump, the side of the oil injection pump is equipped with inlet pipe, the bottom of the inlet pipe is equipped with second connecting pipe, the bottom of the second connecting pipe is equipped with backflow pipe, the other side of the oil injection pump is equipped with outlet pipe, the bottom of the inside of outlet pipe and the inside of second connecting pipe are all equipped with pressure stabilizing component;

[0007] The inside of the liquid outlet pipe is provided with a mounting plate, one side of the mounting plate is provided with a connecting rod, one side of the connecting rod is provided with a sealing rod, the outside of the liquid outlet pipe is provided with a first connecting disc, the inside of the liquid outlet pipe is slidably connected with a flow regulating head, the inside of the flow regulating head is provided with a flow dividing plate, one side of the flow dividing plate is provided with a plurality of flow dividing holes, one side of the outside of the flow regulating head is provided with a piston ring, the piston ring is located in the inside of the liquid outlet pipe, the other side of the outside of the flow regulating head is provided with a second connecting disc, the top and bottom of one side of the second connecting disc are symmetrically provided with first sliding rods, one side of the first sliding rods penetrates through the first connecting disc, one side of the outside of the first sliding rods is provided with a first spring.

[0008] Preferably, the pressure stabilizing assembly comprises a first connecting pipe, a baffle, a sealing plug, a sealing plug, a liquid passage hole, a mounting pipe, a liquid passage groove, a fixed plate, a second spring and a second sliding rod, one side of the bottom of the liquid outlet pipe is provided with the first connecting pipe, the bottom of the inside of the first connecting pipe is provided with the fixed plate, the top of the fixed plate is symmetrically provided with the liquid passage groove on both sides, the top of the fixed plate is provided with the mounting pipe, the inside of the mounting pipe is provided with the second spring, the top of the second spring is provided with the second sliding rod, the top of the second sliding rod is provided with the sealing plug, the top of the inside of the first connecting pipe is provided with the baffle, the top of the baffle is provided with the liquid passage hole, when the internal pressure is large during the use of the pump, the backflow pipe can be opened, thereby returning the oil to the liquid inlet pipe, thereby effectively stabilizing the pressure, avoiding the occurrence of excessive or insufficient pressure, and also preventing the occurrence of pipe explosion due to excessive pressure.

[0009] Preferably, one side of the liquid outlet pipe is provided with a sealing pipe, one side of the flow regulating head is provided with an annular groove, the sealing pipe is located in the inside of the annular groove, so that the flow regulating head can slide along the liquid outlet pipe while ensuring its sealing property.

[0010] Preferably, the outside of the flow regulating head is provided with a clamping groove, the piston ring is located in the inside of the clamping groove, facilitating the installation of the piston ring.

[0011] Preferably, one side of the first connecting disc is provided with a through groove, one side of the first sliding rod is located in the inside of the through groove, one side of the first sliding rod is provided with a limiting plate to limit the movement position of the flow regulating head, while facilitating the compression of the spring.

[0012] Preferably, the top of the backflow pipe is provided with a first flange disc on both sides, the bottom of the outside of the second connecting pipe and the bottom of the outside of the liquid outlet pipe are both provided with a second flange disc, facilitating connection.

[0013] Preferably, the sealing plug is made of a conical structure, and the sealing plug and the liquid passage hole are mutually adapted to improve the sealing effect.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the electronically controlled fuel injection pump pressure stabilizing device;

[0015] 1. With the cooperation of the first connecting pipe, baffle, sealing plug, liquid passage hole, installation pipe, liquid passage groove, fixing plate, spring, second slide rod and return pipe, when the internal pressure of the pump is high during use, the return pipe can be opened, and the oil can be returned to the inlet pipe, thereby effectively stabilizing the pressure and avoiding excessive or insufficient pressure. It can also prevent the connected pipe from bursting due to excessive pressure.

[0016] 2. Through the cooperation of spring, first connecting plate, first slide rod, second connecting plate, flow regulating head, flow divider, flow divider hole, connecting pipe, sealing rod and connecting rod, the oil can be effectively buffered during the process of passing through, so as to avoid excessive impact force of discharge and affect the connected pipe. At the same time, it can also adaptively adjust according to the magnitude of impact force. Attached Figure Description

[0017] Fig. 1 This is a perspective view of the present utility model;

[0018] Fig. 2 This is the front view of the present invention;

[0019] Fig. 3 This is an enlarged view of the voltage stabilizing component of this utility model.

[0020] In the diagram: 1. Fuel injection pump; 2. Discharge pipe; 3. First spring; 4. First connecting plate; 5. First slide rod; 6. Second connecting plate; 7. Flow regulating head; 8. Flow divider; 9. Flow divider orifice; 10. Sealing pipe; 11. Sealing rod; 12. Connecting rod; 13. Pressure stabilizing assembly; 131. First connecting pipe; 132. Baffle; 133. Sealing plug; 134. Fluid passage hole; 135. Mounting pipe; 136. Fluid passage groove; 137. Fixing plate; 138. Second spring; 139. Second slide rod; 14. Mounting plate; 15. Return pipe; 16. Second connecting pipe; 17. Inlet pipe; 18. Piston ring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figs. 1-3The present invention provides an embodiment of an electronically controlled fuel injection pump pressure stabilizing device, comprising a fuel injection pump 1, an inlet pipe 17 on one side of the fuel injection pump 1, a second connecting pipe 16 at the bottom of the inlet pipe 17, a return pipe 15 at the bottom of the second connecting pipe 16, a first flange on both sides of the top of the return pipe 15, and a second flange at the bottom of the outer side of the second connecting pipe 16 and the bottom of the outer side of the outlet pipe 2 for easy connection; an outlet pipe 2 on the other side of the fuel injection pump 1, and a pressure stabilizing component 13 at the bottom of the inside of the outlet pipe 2 and the inside of the second connecting pipe 16.

[0023] The voltage stabilizing assembly 13 includes a first connecting pipe 131, a baffle 132, a sealing plug 133, a liquid passage hole 134, an installation pipe 135, a liquid passage groove 136, a fixing plate 137, a second spring 138, and a second slide rod 139. The first connecting pipe 131 is located on one side of the bottom of the liquid outlet pipe 2. The bottom of the first connecting pipe 131 is provided with a fixing plate 137. Liquid passage grooves 136 are symmetrically provided on both sides of the top of the fixing plate 137. The top of the fixing plate 137 is provided with an installation pipe 135. The second spring 138 is provided inside the installation pipe 135. The top of the second spring 138 is provided with a second slide rod. 139, the top of the second slide rod 139 is provided with a sealing plug 133, the top of the inner side of the first connecting pipe 131 is provided with a baffle 132, the top of the baffle 132 is provided with a liquid passage hole 134, the sealing plug 133 is made of a conical structure, and the sealing plug 133 and the liquid passage hole 134 are adapted to each other to improve the sealing effect. When the internal pressure of the pump is high during use, the return pipe 15 can be opened, and the oil can be returned to the inlet pipe 17, thereby effectively stabilizing the pressure and avoiding the occurrence of excessive or insufficient pressure. It can also prevent the connected pipe from bursting due to excessive pressure.

[0024] The inside of the liquid outlet pipe 2 is provided with a mounting plate 14, one side of the mounting plate 14 is provided with a connecting rod 12, one side of the connecting rod 12 is provided with a sealing rod 11, the outside of the liquid outlet pipe 2 is provided with a first connecting disc 4, the inside of the liquid outlet pipe 2 is slidably connected with a flow adjusting head 7, one side of the liquid outlet pipe 2 is provided with a sealing pipe 10, one side of the flow adjusting head 7 is provided with an annular groove, the sealing pipe 10 is located in the inside of the annular groove, so that the flow adjusting head 7 can slide along the liquid outlet pipe 2, while ensuring its sealing, the inside of the flow adjusting head 7 is provided with a flow dividing plate 8, one side of the flow dividing plate 8 is provided with a plurality of flow dividing holes 9, one side of the outside of the flow adjusting head 7 is provided with a piston ring 18, the outside of the flow adjusting head 7 is provided with a clamping groove, the piston ring 18 is located in the inside of the clamping groove, facilitating the installation of the piston ring, the piston ring 18 is located in the inside of the liquid outlet pipe 2, the other side of the outside of the flow adjusting head 7 is provided with a second connecting disc 6, the top and bottom of one side of the second connecting disc 6 are symmetrically provided with a first sliding rod 5, one side of the first sliding rod 5 penetrates through the first connecting disc 4, one side of the outside of the first sliding rod 5 is provided with a first spring 3, one side of the first connecting disc 4 is provided with a through groove, one side of the first sliding rod 5 is located in the inside of the through groove, one side of the first sliding rod 5 is provided with a limiting plate to limit the moving position of the flow adjusting head 7, while facilitating the compression of the first spring 3.

[0025] Working principle: in the process of extracting oil, first, the oil injection pump 1 starts, the oil injection pump 1 extracts oil from the liquid inlet pipe 17 and discharges into the inside of the liquid outlet pipe 2, if the internal pressure is too large at this time, the sealing plug 133 is compressed by the pressure to drive the second spring 138 to be compressed, so that the liquid passage hole 134 is opened, then the oil flows into the inside of the return pipe 15 from the liquid passage groove 136, and then impacts the sealing plug 133 in the inside of the second connecting pipe 16 when entering the inside of the return pipe 15, so that the sealing plug 133 in the inside of the second connecting pipe 16 is opened, and then the oil returns to the inside of the liquid inlet pipe 17;

[0026] When the impact force of the oil is too large, part of the oil is discharged through the flow dividing hole 9, and the remaining oil impacts the flow dividing plate 8, thereby driving the flow adjusting head 7 to slide along the inside of the liquid outlet pipe 2, and driving the first sliding rod 5 to move, so that the first spring 3 is compressed, and then the sealing rod 11 is separated from the flow dividing hole 9, thereby opening the originally blocked flow dividing hole 9, and then the oil is discharged from the flow dividing hole 9, thereby avoiding the increase of the pressure in the inside of the liquid outlet pipe 2, and also slowing down the speed of the oil, when the speed of the oil is normal, the first spring 3 is reset to drive the first sliding rod 5, the second connecting disc 6, the flow adjusting head 7 and the flow dividing plate 8 to move to the initial position, and then the sealing rod 11 reseals the flow dividing hole 9.

[0027] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that the present application can be implemented in other embodiments without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the present application being indicated by the appended claims rather than by the above description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the scope of the claims.

[0028] In the description of the present application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0029] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For a person skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. An electrically controlled fuel injection pump pressure stabilizing device comprising a fuel injection pump (1), characterized by: One side of the fuel injection pump (1) is provided with an inlet pipe (17), the bottom of the inlet pipe (17) is provided with a second connecting pipe (16), the bottom of the second connecting pipe (16) is provided with a return pipe (15), the other side of the fuel injection pump (1) is provided with an outlet pipe (2), the bottom of the inside of the outlet pipe (2) and the inside of the second connecting pipe (16) are provided with pressure stabilizing assemblies (13). The inside of the outlet pipe (2) is provided with a mounting plate (14), one side of the mounting plate (14) is provided with a connecting rod (12), one side of the connecting rod (12) is provided with a sealing rod (11), the outside of the outlet pipe (2) is provided with a first connecting disc (4), the inside of the outlet pipe (2) is slidably connected with a flow adjusting head (7), the inside of the flow adjusting head (7) is provided with a flow dividing plate (8), one side of the flow dividing plate (8) is provided with a plurality of flow dividing holes (9), one side of the outside of the flow adjusting head (7) is provided with a piston ring (18), the piston ring (18) is located in the inside of the outlet pipe (2), the other side of the outside of the flow adjusting head (7) is provided with a second connecting disc (6), the top and bottom of one side of the second connecting disc (6) are symmetrically provided with first sliding rods (5), one side of the first sliding rods (5) penetrates the first connecting disc (4), one side of the outside of the first sliding rods (5) is provided with first springs (3).

2. The pressure stabilizing device for an electronically controlled fuel injection pump according to claim 1, wherein: The pressure stabilizing assembly (13) comprises a first connecting pipe (131), a baffle (132), a sealing plug (133), a liquid passing hole (134), a mounting pipe (135), a liquid passing groove (136), a fixed plate (137), a second spring (138) and a second sliding rod (139), one side of the bottom of the first connecting pipe (131) is located in the outlet pipe (2), the bottom of the inside of the first connecting pipe (131) is provided with the fixed plate (137), the top of the fixed plate (137) is symmetrically provided with the liquid passing groove (136) on both sides, the top of the fixed plate (137) is provided with the mounting pipe (135), the inside of the mounting pipe (135) is provided with the second spring (138), the top of the second spring (138) is provided with the second sliding rod (139), the top of the second sliding rod (139) is provided with the sealing plug (133), the top of the inside of the first connecting pipe (131) is provided with the baffle (132), the top of the baffle (132) is provided with the liquid passing hole (134).

3. The pressure stabilizing device for an electronically controlled fuel injection pump according to claim 1, wherein: One side of the outlet pipe (2) is provided with a sealing pipe (10), one side of the flow adjusting head (7) is provided with an annular groove, the sealing pipe (10) is located in the inside of the annular groove.

4. The electrically controlled fuel injection pump pressure stabilizing device according to claim 1, characterized in that: The outside of the flow adjusting head (7) is provided with a clamping groove, the piston ring (18) is located in the inside of the clamping groove.

5. The pressure stabilizing device for an electronically controlled fuel injection pump according to claim 1, wherein: One side of the first connecting disc (4) is provided with a through groove, one side of the first sliding rod (5) is located in the inside of the through groove, one side of the first sliding rod (5) is provided with a limiting plate.

6. The pressure stabilizing device for an electronically controlled fuel injection pump according to claim 1, wherein: The top of the return pipe (15) is provided with a first flange disc on both sides, the bottom of the outside of the second connecting pipe (16) and the bottom of the outside of the outlet pipe (2) are provided with a second flange disc.

7. The pressure stabilizing device for an electronically controlled fuel injection pump according to claim 2, wherein: The sealing plug (133) is made of a conical structure, and the sealing plug (133) and the liquid passage hole (134) are mutually matched.

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