Multifunctional fuel pump assembly with three-channel pressure relief structure

Abstract

According to the multifunctional fuel pump assembly with the three-channel pressure relief structure, the flow channel support provided with the top end pressure relief mechanism and the bottom end pressure relief mechanism is arranged between the fuel pump and the filter, so that pressure generated in the working process of the fuel pump can be effectively controlled and released. When the fuel pump works, oil flows from the fuel pump to the filter through the oil duct, at the moment, if the oil pressure is too high, the pressure relief mechanism at the top end can be automatically opened, redundant oil pressure is released into the oil storage barrel, and therefore damage to the fuel pump or the filter due to too high pressure is avoided. Similarly, the bottom end pressure relief mechanism also has the same function, the filter pressure relief mechanism arranged on the filter can be automatically opened and release pressure when the pressure in the filter is too high, and the filter is prevented from being damaged due to the too high pressure. In addition, due to the design of the pressure relief mechanism, it can be guaranteed that oil in the filter can smoothly return to the oil storage barrel after the pressure is released, and therefore oil circulation of the whole system is maintained.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel pump technical field, concretely relates to a multifunctional fuel pump assembly with three -way channel pressure -relief structure. BACKGROUND

[0002] In prior art, fuel in fuel pump usually appears the problem of excessive oil pressure in the process of entering the filter and the process of filter returning oil to the inside of oil storage barrel, which not only increases the burden of fuel pump, but also can cause the damage of fuel pump. CONTENT

[0003] Therefore, the utility model provides a multifunctional fuel pump assembly with three -way channel pressure -relief structure.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] A multifunctional fuel pump assembly with three -way channel pressure -relief structure, including fuel pump and filter being arranged in oil storage barrel, flow channel support is arranged between fuel pump and filter, oil channel is formed in flow channel support, both ends of flow channel support are communicated with fuel pump and filter respectively, top pressure -relief mechanism and bottom pressure -relief mechanism are arranged on flow channel support, top pressure -relief mechanism and bottom pressure -relief mechanism are communicated with the inside of oil storage barrel and oil channel, filter pressure -relief mechanism that communicates filter and the inside of oil storage barrel is arranged on filter.

[0006] Preferably, first interface, second interface, third interface and fourth interface that communicate oil channel are arranged on flow channel support, first interface and second interface are arranged at both ends of flow channel support and communicate with fuel pump and filter respectively, third interface and fourth interface are arranged at top and bottom of flow channel support and communicate with top pressure -relief mechanism and bottom pressure -relief mechanism respectively.

[0007] Preferably, top pressure -relief mechanism and bottom pressure -relief mechanism are jet pumps arranged at upper and lower ends of flow channel support respectively.

[0008] Preferably, shunt pipe is arranged between bottom pressure -relief mechanism and fourth interface, and both ends of shunt pipe are communicated with fourth interface and bottom pressure -relief mechanism respectively.

[0009] Preferably, filter pressure -relief mechanism includes three -way pipe and pressure -relief check valve arranged in three -way pipe, three -way pipe has one -way interface that communicates filter, two -way interface that communicates the inside of oil storage barrel and oil supply interface, and pressure -relief check valve is arranged in two -way interface.

[0010] Preferably, filter check valve is arranged between second interface and filter, and filter check valve controls the on-off of oil channel between second interface and filter.

[0011] The beneficial effect of the present invention lies in the fact that, by disposing a flow channel support with top and bottom pressure relief mechanisms between the fuel pump and the filter, the pressure generated during fuel pump operation can be effectively controlled and released. When the fuel pump is operating, oil flows from the fuel pump to the filter through the oil channel. If the oil pressure is too high, the top pressure relief mechanism automatically opens, releasing the excess oil pressure into the fuel tank, thus preventing damage to the fuel pump or filter caused by excessive pressure. Similarly, the bottom pressure relief mechanism performs the same function, ensuring that the oil pressure is within a safe range. Furthermore, fuel ejected from the top and bottom pressure relief mechanisms can re-enter the fuel pump from the bottom of the fuel pump, maintaining a continuous fuel supply. The filter pressure relief mechanism installed on the filter automatically opens and releases pressure when the internal pressure of the filter is too high, preventing damage to the filter due to excessive pressure. In addition, the design of the pressure relief mechanism can also ensure that the oil inside the filter can smoothly return to the oil storage tank after the pressure is released, thereby maintaining the oil circulation of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Attachment Figure 1 This is a schematic diagram of the structure of the utility model. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] The utility model provides the following technical solutions:

[0017] As attached Figure 1As shown, the present invention discloses a multifunctional fuel pump assembly with a three-channel pressure relief structure, comprising a fuel pump 1 and a filter 2 disposed within an oil storage tank (not shown). A flow channel support 3 is disposed between the fuel pump 1 and the filter 2. An oil channel 4 is formed within the flow channel support 3, with the two ends of the flow channel support 3 respectively connecting the fuel pump 1 and the filter 2. A top pressure relief mechanism 5 and a bottom pressure relief mechanism 6 are disposed on the flow channel support 3, both of which are in communication with the interior of the oil storage tank and the oil channel 4. A filter pressure relief mechanism 7 is disposed on the filter 2, connecting the filter 2 with the interior of the oil storage tank. Specifically, in this design, by disposing the flow channel support 3 with the top pressure relief mechanism 5 and the bottom pressure relief mechanism 6 between the fuel pump 1 and the filter 2, the pressure generated by the fuel pump 1 during operation can be effectively controlled and released. When fuel pump 1 is operating, oil flows from the fuel pump 1 to the filter 2 through oil passage 4. If the oil pressure becomes excessive, the top pressure relief mechanism 5 automatically opens, releasing excess pressure into the fuel reservoir, thus preventing damage to the fuel pump 1 or filter 2 due to excessive pressure. Similarly, the bottom pressure relief mechanism 6 performs the same function, ensuring that the oil pressure remains within a safe range. Fuel ejected from the top and bottom pressure relief mechanisms 5 and 6 can re-enter the fuel pump 1 from the bottom of the fuel pump 1, maintaining a continuous fuel supply. The filter pressure relief mechanism 7 on the filter 2 automatically opens and releases pressure if the internal pressure of the filter 2 becomes excessive, preventing damage to the filter 2 due to excessive pressure. Furthermore, the design of this pressure relief mechanism ensures that the oil inside the filter 2 can smoothly return to the fuel reservoir after pressure is released, thus maintaining oil circulation throughout the system.

[0018] Furthermore, the flow channel support 3 is provided with a first interface 8, a second interface 9, a third interface 10, and a fourth interface 11, which are connected to the oil channel 4. The first interface 8 and the second interface are respectively provided at both ends of the flow channel support 3 and connect the fuel pump 1 and the filter 2. The third interface 10 and the fourth interface 11 are respectively provided at the top and bottom of the flow channel support 3 and connect the top pressure relief mechanism 5 and the bottom pressure relief mechanism 6. Specifically, in this embodiment, the first interface 8 is connected to the oil outlet of the fuel pump 1, and the second interface 9 is connected to the oil inlet of the filter 2, ensuring smooth flow of oil from the fuel pump 1 to the filter 2. The third interface 10 is connected to the inlet of the top pressure relief mechanism 5, and the fourth interface 11 is connected to the inlet of the bottom pressure relief mechanism 6. When the oil pressure is too high, the pressure relief mechanism can open promptly to release excess oil pressure into the oil storage tank.

[0019] Furthermore, the top pressure relief mechanism 5 and the bottom pressure relief mechanism 6 are jet pumps respectively arranged at the upper and lower ends of the flow channel bracket 3. Specifically, in the present embodiment, the oil pressure in the oil channel 4 is effectively controlled by using the jet pumps as the top pressure relief mechanism 5 and the bottom pressure relief mechanism 6. When the system detects that the oil pressure exceeds the preset safety value, the top pressure relief mechanism 5 will start first, and the excess oil pressure will be sprayed into the oil storage barrel through the jet pump, thereby reducing the pressure in the oil channel 4. If the oil pressure continues to rise, the bottom pressure relief mechanism 6 will also start, and the oil pressure will also be released into the oil storage barrel through the jet pump. This dual pressure relief mechanism ensures that the system can maintain stable operation under various working conditions, avoiding equipment damage caused by excessive oil pressure. The jet pump in this embodiment is a prior art, so it will not be described here.

[0020] Furthermore, a shunt pipe 12 is provided between the bottom pressure relief mechanism 6 and the fourth interface 11, and the two ends of the shunt pipe 12 are connected to the fourth interface 11 and the bottom pressure relief mechanism 6 respectively. Specifically, in this embodiment, the shunt pipe 12 is detachably provided on the fourth interface 11, so that shunt pipes 12 of different sizes can be replaced according to different usage requirements to adapt to different oil pressure control requirements. The inner diameter and length of the shunt pipe 12 can be adjusted according to the actual working conditions to optimize the distribution of oil pressure and the pressure relief effect. For example, when the oil pressure is high, a shunt pipe 12 with a larger inner diameter can be used to ensure that the oil pressure can be quickly introduced into the bottom pressure relief mechanism 6 during pressure relief, thereby avoiding damage to the system caused by excessive pressure. When the oil pressure is low, a shunt pipe 12 with a smaller inner diameter can be selected to reduce unnecessary oil pressure loss and improve the overall efficiency of the system. By using a shunt pipe 12 to connect the fourth interface 11 and the bottom pressure relief mechanism 6, the flexibility and adaptability of the system can be further improved.

[0021] Furthermore, the filter pressure relief mechanism 7 includes a three-way pipe 13 and a pressure relief one-way valve 14 disposed within the three-way pipe 13. The three-way pipe 13 has a one-way interface 15 connected to the filter 2, a two-way interface 16 connected to the interior of the oil storage barrel, and an oil supply interface 17. The pressure relief one-way valve 14 is disposed within the two-way interface 16. Specifically, in this embodiment, the one-barrel interface of the three-way pipe 13 is connected to the filter 2. The oil enters the one-barrel interface through the filter 2 and then enters the three-way pipe 13. Within the three-way pipe 13, the oil is guided to the two-way interface 16, which is connected to the interior of the oil storage barrel. When the oil pressure in the system is too high, the pressure relief one-way valve 14 automatically opens, allowing excess oil to flow back to the oil storage barrel from the two-way interface 16, thereby reducing the pressure within the system. This design ensures that the fuel pump 1 operates within a safe pressure range and prevents damage to the fuel pump 1 or related components due to excessive pressure. The oil supply interface 17 is connected to the oil outlet pipe of the flange cover, and the oil flows to the engine through the oil outlet pipe of the flange cover to supply oil to the engine.

[0022] Furthermore, a filter check valve 18 is disposed between the second port 9 and the filter 2. This check valve 18 controls the flow of oil through the oil passage 4 between the second port 9 and the filter 2. Specifically, in this embodiment, when oil enters the fuel pump 1 from the oil storage tank, it first passes through the filter check valve 18. This check valve ensures that the oil can only flow in one direction, preventing reverse flow in the event of abnormal system pressure, thereby protecting the fuel pump 1 from damage.

[0023] In this design, the pressure relief one-way valve 14 and the filter one-way valve 18 are both one-way valve structures in the prior art, so they are not described here in detail.

[0024] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multifunctional fuel pump assembly with a three-channel pressure relief structure, comprising a fuel pump and a filter disposed within a fuel storage tank, a flow channel bracket disposed between the fuel pump and the filter, and an oil channel formed within the flow channel bracket, characterized in that: The two ends of the flow channel bracket are respectively connected to the fuel pump and the filter. The flow channel bracket is provided with a top pressure relief mechanism and a bottom pressure relief mechanism. The top pressure relief mechanism and the bottom pressure relief mechanism are both connected to the interior of the oil storage barrel and the oil channel. The filter is provided with a filter pressure relief mechanism that connects the filter and the interior of the oil storage barrel.

2. The multifunctional fuel pump assembly with a three-channel pressure relief structure according to claim 1, characterized in that: The flow channel bracket is provided with a first interface, a second interface, a third interface and a fourth interface connected to the oil channel. The first interface and the second interface are respectively provided at both ends of the flow channel bracket and are connected to the fuel pump and the filter. The third interface and the fourth interface are respectively provided at the top and the bottom of the flow channel bracket and are connected to the top pressure relief mechanism and the bottom pressure relief mechanism.

3. The multifunctional fuel pump assembly with a three-channel pressure relief structure according to claim 2, characterized in that: The top pressure relief mechanism and the bottom pressure relief mechanism are jet pumps respectively arranged at the upper and lower ends of the flow channel bracket.

4. The multifunctional fuel pump assembly with a three-channel pressure relief structure according to claim 2, characterized in that: A shunt pipe is provided between the bottom pressure relief mechanism and the fourth interface, and both ends of the shunt pipe are connected to the fourth interface and the bottom pressure relief mechanism respectively.

5. The multifunctional fuel pump assembly with a three-channel pressure relief structure according to claim 1, characterized in that: The filter pressure relief mechanism includes a three-way pipe and a pressure relief one-way valve arranged in the three-way pipe. The three-way pipe has a one-way interface connected to the filter and a two-way interface connected to the inside of the oil storage barrel and the oil supply interface. The pressure relief one-way valve is arranged in the two-way interface.

6. The multifunctional fuel pump assembly with a three-channel pressure relief structure according to claim 2, characterized in that: A filter one-way valve is provided between the second interface and the filter, and the filter one-way valve controls the on-off of the oil passage between the second interface and the filter.

Images