High-pressure plunger pump not prone to damage

Abstract

The utility model relates to the technical field of high-pressure plunger pumps, in particular to a high-pressure plunger pump not prone to damage, which comprises a high-pressure plunger pump body and an aluminum upper cover assembled on the high-pressure plunger pump body. The aluminum upper cover comprises an outer surface and an inner surface, the inner surface is provided with reinforcing ribs, a surrounding edge and a ring body formed by connecting a plurality of high-pressure holes into a whole, and the reinforcing ribs are connected with the ring body and the surrounding edge respectively; the outer surface is provided with an annular protrusion. By removing the reinforcing rib structure on the outer surface of the aluminum upper cover, the aluminum upper cover is smoother in metal liquid fluidity and easier to form during die casting, and the problems of air holes and stress concentration during die casting are avoided; and the reinforcing ribs on the inner surface of the aluminum upper cover are heightened, so that the stress tensile strength of the reinforcing ribs on the outer surface is converted into the compressive strength of the reinforcing ribs on the inner surface, the overall strength of the aluminum upper cover is greatly improved, and the service life of the high-pressure plunger pump is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of high-pressure plunger pump technology, specifically a high-pressure plunger pump that is not easily damaged. Background Technology

[0002] A high-pressure plunger pump is a hydraulic device that relies on the reciprocating motion of a plunger in a cylinder to change the volume of a sealed working chamber to achieve liquid suction and pressure.

[0003] The applicant's current high-pressure plunger pump includes a high-pressure plunger pump body and an aluminum top cover mounted on the high-pressure plunger pump body.

[0004] However, during after-sales repair services, the applicant discovered that one of the main reasons for the repair of the aforementioned high-pressure plunger pump was cracking and damage to the aluminum top cover. Researchers found that this was caused by reinforcing ribs on the outer surface of the aluminum top cover. The presence of these ribs resulted in relatively poor fluidity of the molten metal during die casting (the die casting inlet is located on the outer surface), making it highly susceptible to porosity. Consequently, the aluminum top cover experienced localized stress concentration and cracking. Utility Model Content

[0005] The purpose of this invention is to provide a high-pressure plunger pump that is not easily damaged in order to solve the above-mentioned problems, thereby preventing the aluminum top cover of the high-pressure plunger pump from cracking and being damaged.

[0006] This utility model achieves the above-mentioned objective through the following technical solution: a high-pressure plunger pump that is not easily damaged, comprising a high-pressure plunger pump body and an aluminum top cover mounted on the high-pressure plunger pump body; the aluminum top cover includes an outer surface and an inner surface, the inner surface having reinforcing ribs, a surrounding edge, and an annular body formed by several high-pressure holes, the reinforcing ribs respectively connecting the annular body and the surrounding edge; the outer surface has an annular protrusion.

[0007] The height of the ring is greater than the height of the reinforcing rib.

[0008] The height of the surrounding edge is greater than the height of the reinforcing rib.

[0009] Wherein, the height of the surrounding edge is equal to the height of the ring.

[0010] The high-pressure plunger pump is also equipped with an oil change hole that communicates with the oil cylinder, and the oil change hole is equipped with an oil change plug with a sealing ring.

[0011] The oil change hole and the oil change plug are connected by threads.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: by removing the outer surface reinforcing ribs of the aluminum top cover, the flow of molten metal during die casting is smoother and easier to form, avoiding the problems of porosity and stress concentration during die casting; furthermore, by increasing the height of the inner surface reinforcing ribs of the aluminum top cover, the tensile strength of the outer surface reinforcing ribs is transformed into the compressive strength of the inner surface reinforcing ribs, which greatly improves the overall strength of the aluminum top cover and extends the service life of the high-pressure plunger pump. Attached Figure Description

[0013] Figure 1 This is a first three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0015] Figure 3 This is an exploded structural diagram of the present invention;

[0016] Figure 4 This is a first three-dimensional structural diagram of the aluminum top cover of this utility model;

[0017] Figure 5 This is a schematic diagram of the second three-dimensional structure of the aluminum top cover of this utility model. Detailed Implementation

[0018] The specific implementation of this embodiment will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this embodiment, but are not intended to limit the scope of this embodiment.

[0019] The high-pressure plunger pump in this embodiment is as follows: Figures 1-5 As shown, the pump includes a high-pressure plunger pump body 1, an intermediate body 2, an aluminum top cover 11, a water inlet connector 3, a drain connector 4, a drive shaft 5, and a gear 8. The aluminum top cover is made of die-cast aluminum. The high-pressure plunger pump body has a lubrication structure. The high-pressure plunger pump body has an intermediate body; the intermediate body has a water inlet connector and a drain connector. The aluminum top cover is fixed to the side of the intermediate body away from the high-pressure plunger pump body. The drive shaft is rotatably connected to the high-pressure plunger pump body. The drive shaft has a gear. In this embodiment, a bearing 7 is sleeved on the drive shaft, and the bearing is connected to the gear.

[0020] In this embodiment, the aluminum top cover includes an outer surface 6 and an inner surface 9. The inner surface has reinforcing ribs 10, a surrounding edge 12, and a ring formed by a plurality of high-pressure holes 13, 14, 15, 16, 17, and 18 connected together. The reinforcing ribs are respectively connected to the ring 20 and the surrounding edge. The outer surface has a ring protrusion 19. The height of the ring is greater than the height of the reinforcing rib; the height of the surrounding edge is greater than the height of the reinforcing rib; and the height of the surrounding edge is equal to the height of the ring.

[0021] After a period of operation, the high-pressure plunger pump will generate a small amount of aluminum powder due to the friction between its components, which will cause the lubricating oil to fail and reduce its service life. Therefore, the high-pressure plunger pump in this embodiment is also provided with an oil change hole that communicates with the oil cylinder to achieve the purpose of periodic oil change. The oil change hole is provided with an oil change plug 30 with a sealing ring, and the two are connected by threads.

[0022] This embodiment removes the outer surface reinforcing ribs of the aluminum top cover, making the molten metal flow more smoothly and easier to form during die casting, thus avoiding problems such as porosity and stress concentration during die casting. Furthermore, the inner surface reinforcing ribs of the aluminum top cover are increased in height, thereby changing the tensile strength of the outer surface reinforcing ribs to the compressive strength of the inner surface reinforcing ribs, which greatly improves the overall strength of the aluminum top cover and extends the service life of the high-pressure plunger pump.

[0023] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-pressure plunger pump which is not easy to be damaged, comprising a high-pressure plunger pump body and an aluminum upper cover assembled on the high-pressure plunger pump body. characterized in that The aluminum upper cover comprises an outer surface and an inner surface, the inner surface has reinforcing ribs, a surrounding edge, and ring bodies which are connected by a plurality of high-pressure holes, the reinforcing ribs are connected to the ring bodies and the surrounding edge respectively; the outer surface has a ring body protrusion.

2. The unbreakable high pressure piston pump of claim 1, wherein: The height of the ring body is greater than the height of the reinforcing ribs.

3. The break-resistant high pressure piston pump of claim 2, wherein: The height of the surrounding edge is greater than the height of the reinforcing ribs.

4. The break-resistant high pressure piston pump of claim 3, wherein: The height of the surrounding edge is equal to the height of the ring body.

5. The break-resistant high pressure piston pump of claim 1, wherein: The high-pressure plunger pump is further provided with an oil changing hole which is in communication with an oil cylinder, and an oil changing plug with a sealing ring is arranged on the oil changing hole.

6. The break-resistant high pressure piston pump of claim 5, wherein: The oil changing hole and the oil changing plug are connected through threads.

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