Gear type mechanical methanol pump

Abstract

The utility model provides a gear type mechanical methanol pump, which comprises a pump body and an oil supply mechanism arranged in the pump body, the oil supply mechanism comprises a cam shaft, an outer gear and an inner gear, the cam shaft is rotatably connected with the pump body, the outer gear is fixed at one end of the cam shaft, the inner gear is arranged outside the outer gear, and the outer gear is fixed at the other end of the cam shaft. One outer tooth of the outer gear is meshed with one inner tooth of the inner gear, an oil supply cavity and an oil suction cavity which are separated are formed between the outer tooth of the outer gear and an inner tooth cavity of the inner gear, the cam shaft rotates to change the volume of the oil supply cavity and the volume of the oil suction cavity, and the oil suction and supply functions are achieved; the inner gear is arranged in the gear sleeve in a sleeved mode and connected with the gear sleeve in a rotating mode, and side plates for sealing the oil supply cavity and the oil suction cavity are arranged at the two ends of the gear sleeve. According to the mechanical methanol pump, oil suction and oil supply functions are achieved through a gear pair mechanical transmission structure, operation is safe and reliable, and oil supply is stable; and the oil cavity is sealed through double sealing, leakage is prevented, and the sealing effect is good.

Description

Technical Field

[0001] This utility model relates to the field of methanol pump technology, and in particular to a gear-type mechanical methanol pump. Background Technology

[0002] A methanol pump is a high-efficiency, safe, and corrosion-resistant fuel pump device used to draw, pressurize, transport, and inject methanol fuel from the fuel tank into the engine. It is mainly used in methanol fuel supply systems to transport methanol fuel. For methanol engines that are used directly as fuel, it can improve the engine's starting speed and reliability, while reducing energy consumption and noise, and can replace traditional petroleum fuels in vehicles, ships, generator sets, and other fields.

[0003] However, due to the flammable, toxic and corrosive properties of methanol fuel, methanol pumps are prone to leakage after long-term use, leading to unstable operation of the methanol pump and even safety hazards. In addition, methanol is highly corrosive to the pump body and fuel supply parts, affecting the service life of the pump.

[0004] Methanol pumps are a key component of methanol fuel systems and hold great promise in the fields of clean energy and carbon neutrality. With technological advancements and policy support, methanol is expected to become an important part of the future energy system. Therefore, there is an urgent need for a high-efficiency, safe, and corrosion-resistant methanol fuel pump to address the aforementioned technical challenges. Utility Model Content

[0005] The present invention aims to provide a gear-type mechanical methanol pump to overcome the shortcomings of the prior art.

[0006] To solve the above-mentioned technical problems, the technical solution of this utility model is: a gear-type mechanical methanol pump, including a pump body and an oil supply mechanism disposed in the pump body. The oil supply mechanism includes a camshaft, an external gear, and an internal gear. The camshaft is rotatably connected to the pump body, and an external gear is fixed at one end of the camshaft. An internal gear is disposed outside the external gear. One external tooth of the external gear meshes with one internal tooth of the internal gear. An oil supply chamber and an oil suction chamber are separated between the external tooth of the external gear and the internal tooth of the internal gear. The rotation of the camshaft can change the volume of the oil supply chamber and the oil suction chamber to realize the oil suction and oil supply functions. The internal gear is sleeved in a gear sleeve and rotatably connected to the gear sleeve. The two ends of the gear sleeve are provided with side plates that seal the oil supply chamber and the oil suction chamber.

[0007] Furthermore, in the aforementioned gear-type mechanical methanol pump, the internal gear and the external gear are eccentrically arranged.

[0008] Furthermore, in the aforementioned gear-type mechanical methanol pump, the number of internal teeth of the internal gear is greater than the number of external teeth of the external gear, and at least one external tooth on the external gear is in contact with the internal tooth cavity of the internal gear.

[0009] Furthermore, in the aforementioned gear-type mechanical methanol pump, one end of the pump body where the gear sleeve is installed is provided with an end cover, and a sealing ring is provided between the pump body and the end cover. The camshaft is also provided with a skeleton oil seal, which is located near the inner side plate.

[0010] Furthermore, in the aforementioned gear-type mechanical methanol pump, the gear sleeve and side plate are provided with multiple circumferentially distributed mounting holes, which are fixedly connected to the pump body by bolts passing through the mounting holes.

[0011] Furthermore, in the aforementioned gear-type mechanical methanol pump, the pump body is made of aluminum alloy casting, and the inner wall of the pump body is anodized.

[0012] Furthermore, in the aforementioned gear-type mechanical methanol pump, the internal gear, external gear, and side plate are made of stainless steel.

[0013] Furthermore, in the aforementioned gear-type mechanical methanol pump, the pump body is provided with an oil inlet and an oil outlet, both of which are equipped with quick-connect fittings.

[0014] Furthermore, the aforementioned gear-type mechanical methanol pump has an oil filter installed inside the quick-connect fitting at the oil inlet.

[0015] Furthermore, in the aforementioned gear-type mechanical methanol pump, the oil outlet is equipped with a pressure regulating valve.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model is a gear-type mechanical methanol pump that realizes the functions of oil suction and oil supply through a gear pair mechanical transmission structure. It is safe and reliable in operation and provides stable oil supply. It also seals the oil chamber with double seals to prevent leakage and has a good sealing effect. Furthermore, the oil supply parts are made of anti-corrosion materials to improve corrosion resistance and extend the service life of the methanol pump. This solves the problems of unstable operation, leakage, and corrosion in the prior art. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the gear-type mechanical methanol pump of this utility model;

[0019] Figure 2 This is a schematic diagram of the engagement between the external gear and the internal gear of the gear-type mechanical methanol pump of this utility model;

[0020] Figure 3 This is a side view of the gear-type mechanical methanol pump of this utility model;

[0021] Figure 4 This is a schematic diagram of the quick-connect plug for the oil inlet of the gear-type mechanical methanol pump of this utility model.

[0022] In the diagram: 1. Pump body; 101. Oil inlet; 102. Oil outlet;

[0023] 2. Camshaft; 3. External gear; 31. External gear; 4. Internal gear; 41. Internal gear; 5. Gear sleeve; 6. Side plate; 7. End cover; 8. Sealing ring; 9. Skeleton oil seal; 10. Quick connector; 11. Oil filter; 12. Pressure regulating valve. Detailed Implementation

[0024] 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.

[0025] Example 1

[0026] like Figures 1-4 As shown, a gear-type mechanical methanol pump includes a pump body 1 and an oil supply mechanism disposed within the pump body 1. The oil supply mechanism includes a camshaft 2, an external gear 3, and an internal gear 4. The camshaft 2 is rotatably connected to the pump body 1, and an external gear 3 is fixed at one end of the camshaft 2. An internal gear 4 is disposed outside the external gear 3. The internal gear 4 and the external gear 3 are eccentrically arranged. The number of teeth 41 of the internal gear 4 is greater than the number of teeth 31 of the external gear 3. One external tooth 31 of the external gear 3 meshes with one internal tooth 41 of the internal gear 4. At least one external tooth 31 on the external gear 3 contacts and connects with the internal tooth cavity of the internal gear 4, so that an oil supply cavity and an oil suction cavity are separated between the outer side of the external gear 3 and the internal tooth cavity of the internal gear 4. Through the above-mentioned gear pair structure, the camshaft 2 can change the volume of the oil supply cavity and the oil suction cavity when it rotates, thereby realizing the oil suction and oil supply functions.

[0027] In addition, such as Figure 1 As shown, the internal gear 4 is sleeved inside the gear sleeve 5 and rotatably connected to the gear sleeve 5. The gear sleeve 5 has side plates 6 at both ends that seal the oil supply chamber and the oil suction chamber. The gear sleeve 5 and the side plates 6 are provided with multiple circumferentially distributed mounting holes, and are fixedly connected to the pump body 1 by bolts passing through the mounting holes.

[0028] In the above structure, such as Figure 1As shown, the pump body 1 has an end cover 7 at one end where the gear sleeve 5 is installed. A sealing ring 8 is provided between the end face of the pump body 1 and the end cover 7. The camshaft 2 is also provided with a skeleton oil seal 9, which is fixed on the shoulder of the camshaft 2 and located near the inner side plate 6. The sealing ring 8 and the skeleton oil seal 9 seal the two ends of the camshaft 2 located in the gear sleeve 5, preventing methanol from leaking from the gap between the oil supply chamber and the oil suction chamber. The sealing combination with the side plate 6 achieves a double seal, ensuring a good sealing effect.

[0029] Example 2

[0030] Based on the structure of Embodiment 1, the pump body 1 is made of aluminum alloy casting, and the inner wall of the pump body 1 is anodized to prevent methanol corrosion, extend the service life of the methanol pump, and reduce manufacturing costs.

[0031] In addition, the internal gear 4, external gear 3, and side plate 6 are made of stainless steel. Stainless steel is resistant to methanol corrosion, further extending the service life of the methanol pump.

[0032] like Figure 3 , 4 As shown, the pump body 1 is provided with an oil inlet 101 and an oil outlet 102 on the outside. Both the oil inlet 101 and the oil outlet 102 are provided with quick-connect couplings 10 for easy installation and disassembly. Furthermore, an oil filter element 11 is provided inside the quick-connect coupling 10 located in the oil inlet 101. Specifically, a 4μm oil filter screen can be used, with an oil filtration efficiency of more than 90%, ensuring fuel efficiency.

[0033] like Figure 1 , 3 As shown, the oil outlet 102 is equipped with a pressure regulating valve 12. Specifically, at the rated flow rate, the outlet pressure of the pressure regulating valve 12 is set to 5 bar. When the methanol fuel pressure in the fuel supply system exceeds 5 bar, the pressure regulating valve opens to stabilize the pressure in the system and ensure that the injector continuously injects methanol fuel.

[0034] This invention relates to a gear-type mechanical methanol pump. It achieves oil suction and supply functions through a gear-pair mechanical transmission structure, ensuring safe and reliable operation and stable oil supply. Furthermore, it utilizes double sealing to guarantee a tight seal during operation, providing excellent sealing performance. The oil supply components are made of corrosion-resistant materials, improving corrosion resistance and extending the pump's service life. This invention solves problems such as unstable operation, leakage, and corrosion found in existing technologies. The methanol pump of this invention has low environmental requirements and can be used in various environments, demonstrating broad application prospects.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A gear-type mechanical methanol pump characterized by: The pump body and the oil supply mechanism arranged in the pump body, the oil supply mechanism comprises a camshaft, an external gear, and an internal gear, the camshaft is rotationally connected with the pump body, the external gear is fixed on one end of the camshaft, the internal gear is arranged outside the external gear, one external gear of the external gear is engaged with one internal gear of the internal gear, and a separated oil supply cavity and an oil suction cavity are arranged between the external gear and the internal gear, rotation of the camshaft can change the volume of the oil supply cavity and the oil suction cavity, and the oil suction and supply functions are realized; the internal gear is sleeved with the gear sleeve and is rotationally connected with the gear sleeve, and the gear sleeve is provided with side plates at both ends to seal the oil supply cavity and the oil suction cavity.

2. The gear-type mechanical methanol pump according to claim 1, characterized by: The internal gear and the external gear are arranged eccentrically.

3. The gear-type mechanical methanol pump according to claim 2, characterized in that: The number of internal gear teeth of the internal gear is greater than the number of external gear teeth of the external gear, and at least one external gear of the external gear is in contact with the internal gear cavity of the internal gear.

4. The gear-type mechanical methanol pump according to claim 1, characterized by: One end of the gear sleeve is provided with an end cover, a sealing ring is arranged between the pump body and the end cover, a skeleton oil seal is further arranged on the camshaft, and the skeleton oil seal is arranged close to the side plate on the inner side.

5. The gear-type mechanical methanol pump according to claim 1, characterized by: A plurality of circumferentially distributed mounting holes are arranged on the gear sleeve and the side plate, and the gear sleeve and the side plate are fixedly connected with the pump body through bolts penetrating the mounting holes.

6. The gear-type mechanical methanol pump according to claim 1, characterized by: The pump body is made of aluminum alloy castings, and the inner wall of the pump body is treated by anodic oxidation surface treatment.

7. The gear-type mechanical methanol pump according to claim 1 or 6, characterized by: The internal gear, the external gear, and the side plate are made of stainless steel.

8. The gear-type mechanical methanol pump according to claim 1, characterized by: The pump body is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are provided with quick connectors.

9. The gear-type mechanical methanol pump according to claim 8, characterized in that: The quick connector in the oil inlet is provided with an oil filter.

10. The gear-type mechanical methanol pump according to claim 8, characterized by: The oil outlet is provided with a pressure regulating valve.

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