Reciprocating oil seal structure of compressor

Abstract

The utility model relates to a reciprocating oil seal structure of a compressor, which belongs to the technical field of oil seal structures and comprises an oil seal structure body, a base, a connecting rod piece and an oil seal piece, a penetrating through hole is arranged at the center of the oil seal piece, sealing grooves are arranged on two sides of the oil seal piece, a positioning hole is arranged on the base, and the connecting rod piece is divided into two parts by the oil seal piece. A through hole is formed in the base, a center shaft of the connecting rod piece passes through the center of the base and the circle center of the oil seal piece, a connecting lug is arranged on the outer wall of the oil seal piece, an oil channel is formed in the center of the connecting rod piece, and the oil channel is communicated with the through hole and the bottom of the base. And lubricating oil is conveyed through the oil duct, overall installation is convenient, the structure is stable, and normal sliding operation of the shaft is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil seal structures, in particular to a reciprocating oil seal structure for a compressor. Background Art

[0002] The piston and connecting rod of a linear reciprocating compressor adopt reciprocating linear motion. For an oil-lubricated linear reciprocating compressor, in order to prevent the lubricating oil in the crankcase from escaping into the working chamber of the piston, an oil seal structure is required to seal the connecting rod. The oil seal currently in use includes an oil seal body, a sealing lip and an elastic ring, wherein the oil seal body is fastened to the end plate, and the end plate is fastened to the crankcase of the compressor or the end plate and the crankcase are an integrated structure. The connecting rod that reciprocates passes through the inner hole of the oil seal body and cooperates with the sealing lip for dynamic sealing, and the function of the elastic ring is to make the sealing lip fit firmly to the rod body of the connecting rod.

[0003] When the connecting rod vibrates, the inner hole axis of the oil seal body and the axis of the connecting rod will not coincide. At this time, the connecting rod biases the oil seal, causing the oil seal's fitting force on the connecting rod body to become unbalanced. In other words, the sealing lip will undergo elliptical deformation under the action of the connecting rod. Utility Model Content

[0004] 1. Technical problems to be solved by the utility model

[0005] The purpose of this utility model is to solve the problems raised in the above background.

[0006] 2. Technical solution

[0007] In order to achieve the above-mentioned purpose, the technical solution provided by the present utility model is:

[0008] The utility model discloses a reciprocating oil seal structure for a compressor, comprising an oil seal structure body, a base, a connecting rod and an oil seal. A through hole is provided at the center of the oil seal, sealing grooves are provided on both sides of the oil seal, a positioning hole is provided on the base, the oil seal divides the connecting rod into two, the central axis of the connecting rod passes through the center of the base and the center of the oil seal, a connecting ear is provided on the outer wall of the oil seal, an oil channel is provided at the center of the connecting rod, and the oil channel communicates with the through hole and the bottom of the base.

[0009] Preferably, one side of the connecting ear is connected to the connecting rod, and the other side is connected to the outer wall of the oil seal, and the plurality of connecting ears are symmetrically distributed about the connecting rod.

[0010] Preferably, a connecting hole is provided on the connecting ear, the plurality of connecting ears are four connecting ears, and a center line connecting the connecting holes in an oblique direction passes through the center of the through hole.

[0011] Preferably, the thickness of the oil seal is greater than the diameter of the connecting rod.

[0012] Preferably, the sealing groove divides the two sides of the oil seal into an inner ring and an outer ring, and the thickness of the outer ring is greater than the thickness of the inner ring.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0015] The utility model discloses a reciprocating oil seal structure for a compressor. The oil seal structure designed is used on a compressor to support and limit the shaft body inside the compressor while performing oil sealing and transporting lubricating oil through an oil channel. The overall installation is convenient and the structure is stable, ensuring the normal sliding operation of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a compressor reciprocating oil seal structure of the utility model;

[0017] Figure 2 The utility model is a structural schematic diagram of a compressor reciprocating oil seal structure.

[0018] Explanation of the numbers in the schematic diagram:

[0019] 100. Oil seal structure body; 110. Base; 111. Positioning hole; 120. Connecting rod; 121. Oil channel; 130. Oil seal; 131. Through hole; 132. Sealing groove; 133. Inner ring; 134. Outer ring; 140. Connecting ear; 141. Connecting hole. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0021] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0023] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0024] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0025] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Example 1

[0027] Refer to the attached Figure 1-2A compressor reciprocating oil seal structure of this embodiment includes an oil seal structure body 100, a base 110, a connecting rod 120 and an oil seal 130. A through hole 131 is provided at the center of the oil seal 130, and sealing grooves 132 are provided on both sides of the oil seal 130. A positioning hole 111 is provided on the base 110. The oil seal 130 divides the connecting rod 120 into two parts. The central axis of the connecting rod 120 passes through the center of the base 110 and the center of the oil seal 130. A connecting ear 140 is provided on the outer wall of the oil seal 130. An oil channel 121 is provided at the center of the connecting rod 120. The oil channel 121 connects the through hole 131 and the bottom of the base 110.

[0028] In this embodiment, one side of the connecting ear 140 is connected to the connecting rod 120 , and the other side is connected to the outer wall of the oil seal 130 . The plurality of connecting ears 140 are symmetrically distributed about the connecting rod 120 .

[0029] In this embodiment, a connecting hole 141 is provided on the connecting ear 140, and the multiple connecting ears 140 are four connecting ears 140. The center line of the connecting holes 141 in the oblique direction passes through the center of the through hole 131. Through this form of limitation or positioning installation, it can maintain the prepared position, so that the shaft can slide smoothly therein.

[0030] In this embodiment, the thickness of the oil seal 130 is greater than the diameter of the connecting rod 120 .

[0031] In this embodiment, the sealing groove 132 divides the two sides of the oil seal 130 into an inner ring 133 and an outer ring 134 . The thickness of the outer ring 134 is greater than that of the inner ring 133 .

[0032] Working principle: The oil seal structure of this design is used on the compressor to support and limit the shaft inside the compressor while performing oil sealing and transporting lubricating oil through the oil channel 121.

[0033] The above-mentioned embodiments only express a certain implementation method of the utility model, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the utility model, which all fall within the scope of protection of the utility model. Therefore, the scope of protection of the utility model patent shall be based on the attached claims.

Claims

1. A compressor reciprocating oil seal structure, characterized by: The invention comprises an oil seal structure body (100), a base (110), a connecting rod (120) and an oil seal (130). A through hole (131) is provided at the center of the oil seal (130). Sealing grooves (132) are provided on both sides of the oil seal (130). A positioning hole (111) is provided on the base (110). The oil seal (130) divides the connecting rod (120) into two parts. The central axis of the connecting rod (120) passes through the center of the base (110) and the center of the oil seal (130). A connecting ear (140) is provided on the outer wall of the oil seal (130). An oil passage (121) is provided at the center of the connecting rod (120). The oil passage (121) communicates with the through hole (131) and the bottom of the base (110).

2. A compressor reciprocating oil seal structure according to claim 1, characterized in that: One side of the connecting ear (140) is connected to the connecting rod (120), and the other side is connected to the outer wall of the oil seal (130). A plurality of connecting ears (140) are symmetrically distributed about the connecting rod (120).

3. A compressor reciprocating oil seal structure according to claim 2, characterized in that: The connecting ears (140) are provided with connecting holes (141), the plurality of connecting ears (140) are four connecting ears (140), and the center line connecting the connecting holes (141) in the oblique direction passes through the center of the through hole (131).

4. A compressor reciprocating oil seal structure according to claim 1, characterized in that: The thickness of the oil seal (130) is greater than the diameter of the connecting rod (120).

5. The compressor reciprocating oil seal structure according to claim 1, characterized in that: The sealing groove (132) divides the two sides of the oil seal (130) into an inner ring (133) and an outer ring (134), and the thickness of the outer ring (134) is greater than that of the inner ring (133).

Images