Molding filler for water pump

Abstract

The utility model provides a forming filler for a water pump, which comprises an outer graphite layer, an inner graphite layer and a metal layer, the outer graphite layer and the inner graphite layer are of an annular structure, the inner graphite layer is coaxially sleeved on the inner wall of the outer graphite layer, a plurality of annular grooves are arranged on the inner wall of the inner graphite layer in parallel and at intervals, the annular grooves are coaxial with the inner graphite layer, and the metal layer is arranged on the outer graphite layer. The metal layer is arranged in the contact surface of the outer graphite layer and the inner graphite layer, a plurality of first through holes and second through holes are formed in the metal layer, the first through holes and the second through holes have different orientations, the outer graphite layer and the inner graphite layer deform and permeate into the first through holes and the second through holes, and the inner graphite layer, the outer graphite layer and the metal layer are connected into a whole. A plurality of annular grooves are formed in the inner graphite layer, the annular grooves enable lubricant between the shaft sleeve and the filler to form oil films with different thicknesses, a labyrinth effect is formed on the shaft sleeve, and liquid flow leakage can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of water pump fillers, in particular to a molded filler for a water pump. Background Art

[0002] Packing seal refers to a dynamic sealing device that generates a compression force between the packing and the exhibition 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". This is the mechanism of packing seal. Obviously, good sealing lies in maintaining the "bearing effect" and "maze effect".

[0003] Graphite fillers are often used as sealing materials in existing fillers. Graphite fillers are prone to wear during production, transportation and installation, which affects the sealing performance of the graphite fillers. Therefore, the utility model provides a molded filler for a water pump. Summary of the invention

[0004] In order to make up for the above shortcomings, the utility model provides a molded filler for a water pump, aiming to improve the problem that when the existing graphite filler is used as a sealing material, the graphite filler is easily worn during production, transportation and installation, thereby affecting the sealing performance of the graphite filler.

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

[0006] The utility model provides a molded filler for a water pump, comprising:

[0007] an outer graphite layer, wherein the outer graphite layer is a ring-shaped structure;

[0008] An inner graphite layer, the inner graphite layer is an annular structure, the inner graphite layer is coaxially sleeved on the inner wall of the outer graphite layer, the inner wall of the inner graphite layer is parallel and spaced apart with a plurality of annular grooves, the annular grooves are coaxial with the inner graphite layer;

[0009] a metal layer, the metal layer being disposed in the contact surface between the outer graphite layer and the inner graphite layer, the metal layer being provided with a plurality of first through holes and second through holes, the first through holes and the second through holes having different orientations;

[0010] The outer graphite layer and the inner graphite layer are deformed and penetrated into the first through hole and the second through hole, so that the inner graphite layer, the outer graphite layer and the metal layer are connected into a whole.

[0011] Preferably, the first through hole is oriented perpendicular to a contact surface between the outer graphite layer and the inner graphite layer.

[0012] Preferably, the metal layer comprises:

[0013] Two sets of fixing rings, the two fixing rings are arranged correspondingly up and down;

[0014] A connecting ring is provided with a plurality of the first through holes and the second through holes, and the upper and lower ends of the connecting ring are respectively fixedly connected to the two fixing rings.

[0015] Preferably, the fixing ring and the connecting ring are an integrated structure.

[0016] Preferably, a plurality of connection holes are arranged at intervals on the inner wall of the inner graphite layer, and the connection holes connect adjacent annular grooves.

[0017] Preferably, the metal layer comprises:

[0018] Two sets of fixing rings, the two fixing rings are arranged correspondingly up and down;

[0019] A plurality of metal blocks are provided with a plurality of the first through holes and the second through holes, the metal blocks are arranged at intervals, and the upper and lower ends of the metal blocks are respectively fixedly connected to the two fixing rings.

[0020] Preferably, the two fixing rings and each metal block are an integral structure.

[0021] The beneficial effects of the utility model are as follows: 1. In the molded filler for a water pump provided by the utility model, the outer graphite layer, the inner graphite layer and the metal layer cooperate to form a filler with a certain strength, thereby extending the service life of the filler.

[0022] 2. In a molded packing for a water pump provided by the utility model, a plurality of annular grooves are arranged in parallel at intervals on the inner graphite layer. The annular grooves enable the lubricant between the shaft sleeve and the packing to form oil films of different thicknesses, forming a "maze effect" on the shaft sleeve, which is beneficial to preventing liquid leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 A schematic diagram of the cross-sectional structure of a molded filler for a water pump provided in an embodiment of the utility model;

[0025] Figure 2 Another schematic cross-sectional structure diagram of a molded filler for a water pump provided by an embodiment of the utility model;

[0026] Figure 3 A schematic diagram of a metal layer structure provided for an embodiment of the utility model;

[0027] Figure 4 A schematic structural diagram of another embodiment of a metal layer provided in an embodiment of the utility model;

[0028] Figure 5 The positional relationship of the filler provided in the embodiment of the utility model on the water pump shaft.

[0029] In the figure: outer graphite layer 1, inner graphite layer 2, annular groove 20, connecting hole 21, metal layer 3, first through hole 30, second through hole 31, fixing ring 32, connecting ring 33, metal block 34, pump shaft 100, sleeve 200, stuffing box 300, stuffing gland 400, stuffing 500, stuffing ring 600. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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 in the specification of the present invention herein 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.

[0033] Example

[0034] like Figure 1-5 As shown, the utility model provides a molded filler for a water pump, comprising: an outer graphite layer 1, an inner graphite layer 2, and a metal layer 3. The outer graphite layer 1 and the inner graphite layer 2 are both annular structures. The inner graphite layer 2 has a coaxial sleeve 200 on the inner wall of the outer graphite layer 1. A plurality of annular grooves 20 are arranged on the inner wall of the inner graphite layer 2 in parallel and at intervals. The annular grooves 20 are arranged coaxially with the inner graphite ring. The metal layer 3 is arranged in the contact surface between the outer graphite layer 1 and the inner graphite layer 2. A plurality of first through holes 30 and second through holes 31 are arranged on the metal layer 3. The first through holes 30 and the second through holes 31 have different orientations. The outer graphite layer 1 and the inner graphite layer 2 are deformed and penetrated into the first through holes 30 and the second through holes 31, so as to connect the inner graphite layer 2, the outer graphite layer 1, and the metal layer 3 into a whole.

[0035] The utility model provides a water pump forming filler. Figure 5 The packing 500 shown, the packing 500 and the packing ring 600 are arranged in the packing box 300, and are compressed by the packing 500 gland 400. The overall stuffing box 300 is arranged at the connection between the pump sleeve and the pump body of the pump shaft 100, which plays a packing sealing effect. In this embodiment, the outer graphite layer 1 and the inner graphite layer 2 will produce deformation and penetrate into the first through hole 30 and the second through hole 31 of the metal layer 3, thereby connecting the outer graphite layer 1, the inner graphite layer 2, and the metal layer 3 into a whole, wherein there is a certain operating gap between the annular groove 20 on the inner wall of the inner graphite layer 2 and the outer surface of the sleeve 200, and the lubricant in the packing 500 and the lubricant received at the packing ring 600 are in the contact area between the inner wall of the inner graphite ring and the sleeve 200, and in the operating gap between the annular groove 20 and the sleeve 200, so that the packing 500 forms a "maze"-like oil film on the sleeve 200, which plays a role in preventing liquid leakage.

[0036] In this embodiment, if Figure 1-2 As shown, the orientation of the first through hole 30 is perpendicular to the contact surface between the outer graphite layer 1 and the inner graphite layer 2, and the orientation of the second through hole 31 is at a certain angle to the contact surface between the outer graphite layer 1 and the inner graphite layer 2. Through holes with different orientations are beneficial for the deformation of graphite to penetrate into the through holes. The outer graphite layer 1 and the inner graphite layer 2 can be fixed to the metal layer 3 in different directions, making the connection between the metal layer 3 and the outer graphite layer 1 and the inner graphite layer 2 stronger.

[0037] In this embodiment, a plurality of connecting holes 21 are arranged at intervals on the inner wall of the inner graphite layer 2, and the connecting holes 21 connect adjacent annular grooves 20. The connecting holes 21 are arranged at the position where the inner wall of the inner graphite layer 2 contacts the sleeve 200. The connecting holes 21 connect adjacent annular grooves 20, so that the lubricant through-hole connecting hole 21 from one side of the filler 500 or in the annular groove 20 enters the annular groove 20 or the side wall of another filler 500, so that the lubricant can flow in the adjacent fillers 500, and the entry is conducive to forming oil films of different thicknesses on the sleeve 200, forming a "maze" effect.

[0038] In this embodiment, the metal layer 3 includes: a fixing ring 32 and a connecting ring 33, such as Figure 3 As shown, the fixing ring 32 is arranged correspondingly at the top and bottom, and a plurality of first through holes 30 and second through holes 31 are arranged on the connecting ring 33. The upper and lower ends of the connecting ring 33 are respectively fixedly connected to the two fixing rings 32, wherein the fixing ring 32 and the connecting ring 33 are an integrated structure. The cooperation between the connecting ring 33 and the fixing ring 32 makes the metal layer 3 have a strong strength, wherein the two edges of the fixing ring 32 are respectively inserted into the outer graphite layer 1 and the inner graphite layer 2, so that the metal layer 3 is not easy to move in the outer graphite layer 1 and the inner graphite layer 2.

[0039] In this embodiment, if Figure 4 As shown, in another embodiment, the metal layer 3 includes: a fixing ring 32 and a metal block 34, the fixing ring 32 is arranged correspondingly up and down, a plurality of the first through holes 30 and the second through holes 31 are arranged on the metal block 34, each of the metal blocks 34 is arranged at intervals, and the upper and lower ends of the metal block 34 are respectively fixedly connected to the two fixing rings 32, wherein the fixing ring 32 and the metal block 34 are an integrated structure, which is relative to Figure 3 The metal layer 3 shown is slightly weaker in strength but has a reduced deadweight, which reduces the deadweight of the filler to a certain extent.

[0040] It should be noted that the metal layer 3 is arranged inside the outer graphite layer 1 and the inner graphite layer 2. When the stuffing gland 400 and the stuffing box 300 cooperate to compress the stuffing, the stuffing 500 can produce a certain deformation, wherein the metal layer 3 will not hinder the compression of the stuffing gland 400 and the stuffing box 300.

[0041] 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 by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A molded filler for a water pump, characterized in that: include: an outer graphite layer, wherein the outer graphite layer is a ring-shaped structure; An inner graphite layer, the inner graphite layer is an annular structure, the inner graphite layer is coaxially sleeved on the inner wall of the outer graphite layer, the inner wall of the inner graphite layer is parallel and spaced apart with a plurality of annular grooves, the annular grooves are coaxial with the inner graphite layer; a metal layer, the metal layer being disposed in the contact surface between the outer graphite layer and the inner graphite layer, the metal layer being provided with a plurality of first through holes and second through holes, the first through holes and the second through holes having different orientations; The outer graphite layer and the inner graphite layer are deformed and penetrated into the first through hole and the second through hole, so that the inner graphite layer, the outer graphite layer and the metal layer are connected into a whole.

2. A molded filler for a water pump according to claim 1, characterized in that: The first through hole is oriented perpendicular to a contact surface between the outer graphite layer and the inner graphite layer.

3. A molded filler for a water pump according to claim 1, characterized in that: The metal layer comprises: Two sets of fixing rings, the two fixing rings are arranged correspondingly up and down; A connecting ring is provided with a plurality of the first through holes and the second through holes, and the upper and lower ends of the connecting ring are respectively fixedly connected to the two fixing rings.

4. A molded filler for a water pump according to claim 3, characterized in that: The fixing ring and the connecting ring are an integrated structure.

5. The molded filler for a water pump according to claim 1, characterized in that: A plurality of connection holes are arranged at intervals on the inner wall of the inner graphite layer, and the connection holes connect the adjacent annular grooves.

6. A molded filler for a water pump according to claim 1, characterized in that: The metal layer comprises: Two sets of fixing rings, the two fixing rings are arranged correspondingly up and down; A plurality of metal blocks are provided with a plurality of the first through holes and the second through holes, the metal blocks are arranged at intervals, and the upper and lower ends of the metal blocks are respectively fixedly connected to the two fixing rings.

7. A molded filler for a water pump according to claim 6, characterized in that: The two fixing rings and the metal blocks are an integrated structure.

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