Novel rotary compressor pump

Abstract

The utility model relates to a novel rotary compressor pump and belongs to the technical field of compressors, the novel rotary compressor pump comprises a pump body and an oil suction cover, the pump body comprises an upper support, a cylinder body and a lower support, the cylinder body is located between the upper support and the lower support and sequentially connected through an eccentric shaft, and the oil suction cover comprises an oil storage tank and an oil suction pipe connected with the oil storage tank. An annular connecting plate is arranged on the outer side of the oil storage tank, and an annular sealing groove provided with a sealing ring is formed in the end, connected with the oil suction cover, of the lower support. The contact area between the oil suction cover and the lower support is increased through the annular connecting plate arranged on the oil suction cover, the stability of the connecting structure is enhanced, the leakage phenomenon possibly caused by the flatness precision problem of the connecting plate is effectively avoided through the sealing groove designed in the lower support and used for installing the sealing ring, and the service life of the oil suction cover is prolonged. And the sealing effect of the oil suction cover is improved, and the reliability and safety of equipment operation are ensured.

Description

TECHNICAL FIELD

[0001] The present disclosure belongs to the technical field of compressors, and particularly relates to a novel rotary compressor pump. BACKGROUND

[0002] The statements herein merely provide background technology related to the present disclosure, and do not necessarily constitute prior art.

[0003] In the process of high-speed operation of the rotary compressor, the pump will rotate under the driving of the motor. At this time, the compressor needs to provide refrigerant oil to the internal components of the pump for lubrication, so as to avoid abnormal wear of the compressor due to lack of lubrication. The commonly used pump lubrication method is mainly used for vertical compressors. For horizontal compressors, refrigerant oil needs to pass through a special oil suction cover to achieve lubrication. However, the end surface flatness precision between the oil suction cover and the lower support is extremely high.

[0004] The existing patent CN206017156U discloses a novel rotary compressor, which provides an oil suction cover. The oil suction cover is installed on the lower support. The oil suction cover includes a shell cover. The outer edge of the top opening of the shell cover is provided with an ear seat. The ear seat is provided with a threaded hole. The lower support is provided with a corresponding threaded hole. The shell cover is connected with an oil delivery pipe. The oil suction pipe is connected with the shell cover. However, the ear plate structure of the oil suction cover is not in complete contact with the lower support. The sealing performance during oil suction cannot be guaranteed, which may result in poor oil suction effect of the compressor pump. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present disclosure is to provide a novel rotary compressor pump, which can at least solve one of the above technical problems.

[0006] The technical scheme of the present utility model provides a novel rotary compressor pump, which comprises a pump body and an oil suction cover. The pump body comprises an upper support, a cylinder body and a lower support. The cylinder body is located between the upper support and the lower support and is connected in sequence through an eccentric shaft. The lower support is in the shape of a boss. One end of the boss is connected with the oil suction cover. The oil suction cover comprises an oil storage groove and an oil suction pipe connected with the oil storage groove. The outer side of the oil storage groove is provided with a circular connecting plate. One end of the lower support connected with the oil suction cover is provided with a circular sealing groove for mounting a sealing ring.

[0007] Further, the connecting plate is uniformly provided with through holes connected with the lower support.

[0008] Further, the connecting plate and the lower support are connected through bolts.

[0009] Further, the uniformly distributed diameters of the through holes are greater than the outer diameter of the sealing groove on the lower support.

[0010] Furthermore, the inner diameter of the sealing groove is larger than the diameter of the eccentric shaft hole on the lower support.

[0011] Furthermore, the inner diameter of the oil storage tank is larger than the diameter of the eccentric shaft hole on the lower support.

[0012] Furthermore, one end of the oil suction pipe connected to the oil storage tank is the oil outlet, and the other end is the oil suction port. The oil suction pipe is bent towards the cylinder body, and the position of the oil suction port after bending is flush with the maximum outer diameter of the cylinder body.

[0013] Furthermore, the oil storage tank and the oil suction pipe are welded together.

[0014] Furthermore, the connecting plate is welded to the oil storage tank.

[0015] Furthermore, both the oil storage tank and the oil suction pipe are made of brass.

[0016] The beneficial effects of one or more of the above technical solutions are as follows:

[0017] This disclosure increases the contact area between the oil suction hood and the lower support by using an annular connecting plate. This not only enhances the stability of the connection structure, but also effectively avoids leakage caused by the flatness accuracy of the connecting plate through the sealing groove designed on the lower support for installing the sealing ring. This improves the sealing effect of the oil suction hood and ensures the reliability and safety of the equipment operation. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0019] Fig. 1 This is a schematic diagram of the rotary compressor pump and oil suction shroud assembly in one or more embodiments of this disclosure;

[0020] Fig. 2 This is a schematic diagram of the oil-absorbing hood structure in one or more embodiments of this disclosure.

[0021] In the diagram, 1 is the cylinder block; 2 is the upper support; 3 is the eccentric shaft; 4 is the lower support; 5 is the bolt; 6 is the oil suction cover; 7 is the sealing groove; 8 is the oil reservoir; and 9 is the oil suction pipe. Detailed Implementation

[0022] like Figs. 1-2 As shown in the figure, this embodiment provides a novel rotary compressor pump, including a pump body and an oil suction shroud 6.

[0023] like Fig. 1As shown, the pump body includes an upper support 2, a cylinder body 1 and a lower support 4, the cylinder body 1 is located between the upper support 2 and the lower support 4 and is connected in turn by an eccentric shaft 3, and the lower support 4 is provided with a circular sealing groove 7 at one end connected with an oil suction cover 6.

[0024] Specifically, the lower support 4 is provided in the shape of a boss, one end of the boss is connected with the oil suction cover 6, the oil suction cover 6 includes an oil storage groove 8 and an oil suction pipe 9 connected with the oil storage groove 8, the oil storage groove 8 and the oil suction pipe 9 are connected by welding, the outer side of the oil storage groove 8 is provided with a circular connecting plate, the connecting plate and the oil storage groove 8 are connected by welding, and the oil storage groove 8 and the oil suction pipe 9 are made of brass material with good corrosion resistance and heat conduction performance; the circular connecting plate provided on the outer side of the oil suction cover 6 increases the contact area between the oil suction cover 6 and the lower support 4, and improves the stability of the connecting structure between the oil suction cover 6 and the lower support 4.

[0025] As shown in Fig. 2 The connecting plate is uniformly provided with through holes connected with the lower support 4, and the connecting plate and the lower support 4 are connected by bolts 5.

[0026] Specifically, the uniformly distributed diameter of the through hole is greater than the outer diameter of the sealing groove 7 on the lower support 4; the sealing groove 7 is ensured to be in complete contact with the connecting plate, and the sealing groove 7 is provided with sufficient sealing space; the inner diameter of the sealing groove 7 is greater than the hole diameter of the eccentric shaft hole on the lower support 4, which not only allows the eccentric shaft to rotate freely in the sealing groove 7, but also provides space for lubrication; the inner diameter of the oil storage groove 8 is greater than the hole diameter of the eccentric shaft hole on the lower support 5, so that the oil storage groove 8 stores enough lubricating oil or other liquid, and at the same time, when the eccentric shaft rotates, the lubricating oil can be uniformly distributed to the contact surface of the eccentric shaft and the sealing groove 7, thereby further reducing friction and wear, and improving the lubrication performance and service life of the mechanical structure.

[0027] The end of the oil suction pipe 9 connected with the oil storage groove 8 is an oil outlet, and the other end is an oil suction port, the oil suction pipe 9 is bent towards the cylinder body 1, and the position of the bent oil suction port is flush with the maximum outer diameter of the cylinder body 1.

[0028] The connection mode of the oil suction pipe 9 and the oil storage groove 8 is that one end is an oil outlet, and the other end is an oil suction port. The design of the oil suction pipe 9 is to bend towards the cylinder body 1, so that after bending, the position of the oil suction port can be kept on the same horizontal line with the maximum outer diameter of the cylinder body 1.

[0029] It is ensured that the oil suction pipe 9 can effectively generate a pressure difference in the oil suction cover 6 while the internal spiral blade of the eccentric shaft 3 rotates during work, so as to suck oil, so as to meet the lubrication of the internal parts of the pump; at the same time, the bending design of the oil suction pipe 9 also helps to reduce the turbulence and air bubbles of the oil in the transmission process, thereby improving the stability and efficiency of the entire hydraulic system.

[0030] The working principle of the utility model:

[0031] The oil suction cover is fixed to the lower end of the lower support by bolts by using the oil suction cover adhering plane and the lower support plane, and a sealing ring is added in the groove on the lower support to avoid the contact surface leakage problem caused by the poor machining precision of the lower support plane or the oil suction cover plane.

[0032] Although the specific embodiments of the present disclosure are described above in combination with the drawings, it is not a limitation on the protection scope of the present disclosure, and those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the present disclosure without creative labor are still within the protection scope of the present disclosure.

Claims

1. A novel rotary compressor pump, characterized by, The pump body comprises an upper support, a cylinder and a lower support, the cylinder is located between the upper support and the lower support, and the upper support, the cylinder and the lower support are sequentially connected through an eccentric shaft, the lower support is provided in the shape of a boss, one end of the boss is connected with an oil suction cover, the oil suction cover comprises an oil storage groove and an oil suction pipe connected with the oil storage groove, the outer side of the oil storage groove is provided with a circular connecting plate, and the end of the lower support connected with the oil suction cover is provided with a circular sealing groove for mounting a sealing ring.

2. A novel rotary compressor pump as claimed in claim 1, wherein, The connecting plate is uniformly provided with through holes connected with the lower support.

3. A novel rotary compressor pump as claimed in claim 1, wherein, The connecting plate and the lower support are connected through bolts.

4. A novel rotary compressor pump as claimed in claim 3, wherein, The uniformly distributed diameter of the through holes is greater than the outer diameter of the sealing groove on the lower support.

5. A novel rotary compressor pump as claimed in claim 2, wherein, The inner diameter of the sealing groove is greater than the hole diameter of the eccentric shaft hole on the lower support.

6. A novel rotary compressor pump as claimed in claim 1, wherein, The inner diameter of the oil storage groove is greater than the hole diameter of the eccentric shaft hole on the lower support.

7. A novel rotary compressor pump as claimed in claim 1, wherein, One end of the oil suction pipe connected with the oil storage groove is an oil outlet, and the other end is an oil suction port, the oil suction pipe is bent towards the cylinder, and the position of the bent oil suction port is flush with the maximum outer diameter of the cylinder.

8. A novel rotary compressor pump as claimed in claim 1, wherein, The oil storage groove and the oil suction pipe are welded.

9. A novel rotary compressor pump as claimed in claim 1, wherein, The connecting plate and the oil storage groove are welded.

10. A novel rotary compressor pump as claimed in claim 1, wherein, The oil storage groove and the oil suction pipe are made of brass.

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