Nylon material packing ring for water pump

Abstract

The utility model provides a nylon material packing ring for a water pump, and belongs to the technical field of water pump packing rings. The nylon material packing ring for the water pump comprises a connecting ring, outer rings, a supporting ring and a connecting column, four sets of through holes are evenly and symmetrically distributed in the connecting ring, the outer rings are symmetrically and coaxially arranged on the two sides of the connecting ring, four sets of clamping grooves are evenly and symmetrically formed in the outer edges of the outer rings, the supporting ring is arranged in the connecting ring, and the connecting column is arranged in the connecting ring and the outer rings. The radial width of the outer ring is larger than that of the connecting ring, the outer ring is made of nylon materials, the inner wall of the outer ring makes contact with a shaft sleeve of the pump shaft, an operation gap exists between the inner wall of the connecting ring and the shaft sleeve of the pump shaft, and the outer ring is made of nylon materials. The lubricant can enter the operation gap through the through hole and can enter the adjacent filler through the clamping groove, and the effect of preventing liquid flow leakage is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump packing rings, in particular to a nylon packing ring for a water pump. Background Art

[0002] The connection between the motor shaft and the pump body in the water pump usually uses a packing seal. A packing seal refers to a dynamic sealing device that generates a compression force between the packing and the rotating parts and the fixed parts through the self-tightening effect of pre-tightening or medium pressure. After the packing is installed in the packing cavity, it is axially compressed by the gland screw. When the shaft and the packing have relative movement, due to the plasticity of the packing, it generates radial force and is in close contact with the shaft. At the same time, the lubricant impregnated in the packing is squeezed out to form an oil film between the contact surfaces. Since the contact state is not particularly uniform, the contact part will appear "boundary lubrication" state, which is called "bearing effect"; and the uncontacted concave part forms a small oil groove with a thicker oil film. The contact part and the non-contact part form an irregular maze, which plays a role in preventing liquid leakage, which is called "maze effect". That is, good sealing lies in maintaining the "bearing effect" and "maze effect". The two sides of the packing ring are in contact with the packing, and the lubricant entering the packing ring can enter the packing, thereby realizing the packing seal.

[0003] The packing rings in the existing water pump packing seals have the disadvantages of poor sealing, non-standard materials, complicated assembly, easy damage, etc. Therefore, the utility model provides a nylon packing ring for a water pump. Summary of the invention

[0004] In order to make up for the above shortcomings, the utility model provides a nylon packing ring for a water pump, aiming to improve the problems of the packing ring in the existing water pump packing seal, such as high cost, poor sealing, non-standard material, cumbersome assembly, easy damage, etc.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a nylon packing ring for a water pump, comprising:

[0007] A connecting ring, on which four groups of through holes are evenly and symmetrically distributed;

[0008] Two groups of outer rings, the outer rings are symmetrically and coaxially arranged on both sides of the connecting ring, and four groups of slots are evenly and symmetrically arranged on the outer edges of the outer rings;

[0009] Two sets of support rings, wherein the support rings are arranged inside the connecting ring;

[0010] A plurality of connecting columns, wherein the connecting columns are arranged in the connecting ring and the outer ring, and the two ends of the connecting ring are connected to the two supporting rings;

[0011] Among them, the radial width of the outer ring is greater than the radial width of the connecting ring, the outer ring is made of nylon material, the inner wall of the outer ring contacts the sleeve of the pump shaft, there is an operating gap between the inner wall of the connecting ring and the sleeve of the pump shaft, and the outer ring is made of nylon material.

[0012] Preferably, the through holes correspond to the positions of the slots, and the adjacent through holes and slots are arranged on the same axis.

[0013] Preferably, the diameter of the through hole is smaller than the width of the connecting ring.

[0014] Preferably, the axial thickness of the outer ring is smaller than the axial thickness of the connecting ring.

[0015] Preferably, the outer ring, the connecting ring, the supporting ring and the connecting column are integrally stamped.

[0016] Preferably, the support ring and the connecting column are an integrated structure.

[0017] Preferably, each of the connecting columns is evenly spaced to connect the two supporting rings.

[0018] The beneficial effects of the utility model are: 1. In a nylon material packing ring for a water pump provided by the utility model, the lubricant enters the connecting ring, part of the lubricant enters the operating gap between the connecting ring and the shaft sleeve through the through hole, forming a thicker oil film on the rear sleeve, and part of the lubricant enters the adjacent packing through the groove, and the packing contacts the shaft sleeve to form a thinner oil film on the contact surface of the shaft sleeve and the packing. The packing and the packing ring form an irregular maze on the shaft sleeve, which plays a role in preventing liquid leakage.

[0019] 2. In the nylon packing ring for a water pump provided by the utility model, the outer ring part is made of nylon material, so that the packing ring has a certain elasticity and can be infiltrated by lubricant, and has good self-lubrication. The packing ring is simple to manufacture and easy to load.

[0020] 3. The utility model provides a nylon packing ring for a water pump, which has a simple structure, good sealing performance and is easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1A schematic diagram of the cross-sectional structure of a nylon packing ring for a water pump provided in an embodiment of the utility model;

[0023] Figure 2 Another schematic cross-sectional structure diagram of a nylon packing ring for a water pump provided by an embodiment of the utility model;

[0024] Figure 3 A side view of a nylon packing ring for a water pump provided in an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the connection relationship between a nylon packing ring for a water pump and a shaft of the water pump provided in an embodiment of the utility model;

[0026] Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of a nylon packing ring for a water pump provided in an embodiment of the utility model;

[0027] Figure 6 A schematic diagram of a three-dimensional structure of the connection between a support ring and a connecting column provided in an embodiment of the utility model.

[0028] In the figure: packing ring 100, connecting ring 1, through hole 10, outer ring 2, groove 20, support ring 3, connecting column 4, operating gap 5, pump shaft 200, stuffing box 300, packing gland 400, shaft sleeve 500, packing 600. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific drawings.

[0030] It should be noted that, in the present invention, when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Example

[0033] like Figure 1-6 As shown, the utility model provides a nylon material packing ring for a water pump, comprising: a connecting ring 1, an outer ring 2, a support ring 3, and a connecting column 4. Four groups of through holes 10 are evenly and symmetrically distributed on the connecting ring 1. The outer ring 2 is symmetrically and coaxially arranged on both sides of the connecting ring 1. Four groups of slots 20 are evenly and symmetrically arranged on the outer edge of the outer ring 2. The support ring 3 is arranged inside the connecting ring 1. The connecting column 4 is arranged inside the connecting ring 1 and the outer ring 2. The two ends of the connecting ring 1 are connected to the two support rings 3, wherein the radial width of the outer ring 2 is greater than the radial width of the connecting ring 1. The outer ring 2 is made of nylon material, and the inner wall of the outer ring 2 contacts the pump shaft 200. There is an operating gap 5 between the inner wall of the connecting ring 1 and the pump shaft 200. It should be noted that the connecting ring 1 is connected to the outer ring 2 and will not block the slots 20 on the outer ring 2. Figure 4 As shown, the sleeve 500 is sleeved on the outer surface of the pump shaft 200, the stuffing box 300 is close to the connection between the water pump and the shaft, a plurality of packings 600 and packing rings 100 are arranged in the stuffing box 300, and the stuffing gland 400 is used to compress the packings 600 and the packing rings 100, and the end of the oil cup passes through the stuffing box 300 to contact the packing ring 100, and the lubricant in the oil cup can enter the packing ring 100, and the lubricant enters the connecting ring 1, and part of the lubricant enters the operating gap 5 between the connecting ring 1 and the sleeve 500 through the through hole 10, forming a thicker oil film on the rear sleeve, and part of the lubricant enters the adjacent packing 600 through the groove 20, and the packing 600 contacts the sleeve 500 to form a thinner oil film on the contact surface of the sleeve 500 and the packing 600, and the packing 600 and the packing ring 100 form an irregular maze on the sleeve 500, which plays a role in preventing liquid leakage.

[0034] In this embodiment, if Figure 3 As shown, the through hole 10 corresponds to the position of the slot 20, and the adjacent through holes 10 and the slot 20 are arranged on the same axis. The lubricant in the oil cup enters the connecting ring 1, quickly enters the operating gap 5 between the connecting ring 1 and the sleeve 500 from the edge of the through hole 10, and quickly passes through the slot 20 to enter the adjacent filler 600.

[0035] In this embodiment, the diameter of the through hole 10 is smaller than the width of the connecting ring 1, and the size of the through hole 10 is not too large, which will affect the strength of the connecting ring 1; the axial thickness of the outer ring 2 is smaller than the axial thickness of the connecting ring 1, so that the operating gap 5 between the connecting ring 1 and the sleeve 500 is larger, and a thicker oil film area is formed on the sleeve 500. Figure 6 As shown, the support ring 3 and the connecting column 4 are an integrated structure, and the connecting column 4 connects the two support rings 3 at even intervals. The support ring 3 and the connecting column 4 of the integrated structure are relatively strong, and the spaced arrangement of the connecting column 4 can reduce the deadweight of the packing ring 100.

[0036] In this embodiment, the outer ring 2, the connecting ring 1, the supporting ring 3, and the connecting column 4 are integrally stamped, that is, the supporting structure formed by the supporting ring 3 and the connecting column 4 is surrounded by a nylon material and stamped. Figure 5 The shape shown. The nylon material makes the packing ring 100 have a certain elasticity, and can generate a certain radial force around the sleeve 500 under the action of the compression force and closely contact the sleeve 500. The nylon material allows the packing ring 100 itself to be immersed in the lubricant, so that the self-lubricating performance is good. The packing ring 100 is simple to make and easy to load. At the same time, it can extend the service life under the action of the support ring 3. The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A nylon packing ring for a water pump, characterized in that: include: A connecting ring, on which four groups of through holes are evenly and symmetrically distributed; Two groups of outer rings, the outer rings are symmetrically and coaxially arranged on both sides of the connecting ring, and four groups of slots are evenly and symmetrically arranged on the outer edges of the outer rings; Two sets of support rings, wherein the support rings are arranged inside the connecting ring; A plurality of connecting columns, wherein the connecting columns are arranged in the connecting ring and the outer ring, and the two ends of the connecting ring are connected to the two supporting rings; Among them, the radial width of the outer ring is greater than the radial width of the connecting ring, the outer ring is made of nylon material, the inner wall of the outer ring contacts the sleeve of the pump shaft, there is an operating gap between the inner wall of the connecting ring and the sleeve of the pump shaft, and the outer ring is made of nylon material.

2. A nylon packing ring for a water pump according to claim 1, characterized in that: The through holes correspond to the positions of the clamping slots, and the adjacent through holes and the clamping slots are arranged on the same axis.

3. A nylon packing ring for a water pump according to claim 1, characterized in that: The diameter of the through hole is smaller than the width of the connecting ring.

4. A nylon packing ring for a water pump according to claim 1, characterized in that: The axial thickness of the outer ring is smaller than the axial thickness of the connecting ring.

5. A nylon packing ring for a water pump according to claim 1, characterized in that: The outer ring, the connecting ring, the supporting ring and the connecting column are integrally formed by stamping.

6. A nylon packing ring for a water pump according to claim 1, characterized in that: The support ring and the connecting column are an integrated structure.

7. A nylon packing ring for a water pump according to claim 1, characterized in that: Each of the connecting columns is evenly spaced to connect the two supporting rings.

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