Graphite packing combined ring

Abstract

The utility model discloses a graphite packing and packing combined ring which comprises a first graphite packing ring and a second graphite packing ring located below the first graphite packing ring, a plurality of stacked graphite packing rings are arranged between the first graphite packing ring and the second graphite packing ring, and the upper end and the lower end of each graphite packing ring are respectively provided with a step face. And the step surfaces of the adjacent graphite packing rings are matched. According to the graphite packing ring, the step surfaces are respectively arranged at the upper end and the lower end of the graphite packing ring, and the step surfaces of the adjacent graphite packing rings are matched, so that a certain occlusal force is formed between the adjacent graphite packing rings in the use process, the slip condition is not easy to occur, and the stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, in particular to a graphite packing combined ring. Background Art

[0002] Graphite packing rings are mechanical seals suitable for use in the petroleum and chemical industries, as well as in environments with corrosive media such as acids and alkalis. They are installed in various equipment, pumps, valves, and more. Graphite packing rings are commonly found in the graphite industry. They are annular and are made by shearing flexible graphite and then winding and pressing it through a mold. Graphite packing rings are relatively easy to produce and install due to their self-lubricating and corrosion-resistant properties. They are currently one of the most cost-effective and environmentally friendly sealing packings.

[0003] Currently, most valve stem seals used on valves are circular, and graphite packing rings are used at the upper and lower ends. Graphite packing rings are used to connect and compress the upper and lower graphite packing rings. Adjacent graphite packing rings are in contact with each other through arc surfaces, and the adjacent graphite packing rings often slip during use. Utility Model Content

[0004] The purpose of the utility model is to provide a graphite packing combined ring to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The purpose of this utility model is achieved by the following technical solutions:

[0006] A graphite packing combination ring comprises a first graphite packing ring and a second graphite packing ring located below the first graphite packing ring. A plurality of superimposed graphite packing rings are arranged between the first graphite packing ring and the second graphite packing ring. Step surfaces are respectively provided at the upper and lower ends of the graphite packing rings, and the step surfaces of adjacent graphite packing rings are adapted to each other.

[0007] Furthermore, the upper and lower ends of the graphite packing ring are respectively recessed inward to form the step surface.

[0008] Furthermore, the step surface includes, from the outside to the inside, a first horizontal section, an inclined section, and a second horizontal section;

[0009] The first horizontal section and the second horizontal section are transitionally connected via the inclined section.

[0010] Furthermore, the angle formed between the inclined section and the second horizontal section is 120°.

[0011] Furthermore, the height of the inclined section is 2 mm.

[0012] Furthermore, the outer diameter of the first graphite packing ring, the second graphite packing ring and the graphite filler ring is 62 mm, and the inner diameter is 42 mm.

[0013] Furthermore, the thickness of the first graphite packing ring, the second graphite packing ring and the graphite filler ring are all 10 mm.

[0014] Furthermore, metal wires are provided inside the first graphite packing ring and the second graphite packing ring.

[0015] Furthermore, a metal wire mesh is provided inside the graphite packing ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model provides step surfaces at the upper and lower ends of the graphite packing ring, and the step surfaces of adjacent graphite packing rings are adapted to each other, so that a certain bite force is formed between the adjacent graphite packing rings during use, and slipping is not likely to occur, thereby improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the graphite packing combination ring of the utility model;

[0019] Figure 2 for Figure 1 Explosion diagram.

[0020] In the figure: 10, first graphite packing ring; 20, second graphite packing ring; 30, graphite packing ring; 40, step surface; 41, first horizontal section; 42, inclined section; 43, second horizontal section. DETAILED DESCRIPTION

[0021] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] like Figure 1-Figure 2 A graphite packing combination ring is shown, comprising a first graphite packing ring 10 and a second graphite packing ring 20 located below the first graphite packing ring 10. A plurality of stacked graphite packing rings 30 are arranged between the first graphite packing ring 10 and the second graphite packing ring 20. Step surfaces 40 are respectively provided at the upper and lower ends of the graphite packing rings 30, and the step surfaces 40 of adjacent graphite packing rings 30 are adapted to each other.

[0023] Based on the above structure, the upper and lower ends of the graphite packing ring 30 are respectively recessed inward to form a step surface 40. Here, the step surface includes a first horizontal section 41, an inclined section 42 and a second horizontal section 43 from the outside to the inside. The first horizontal section 41 and the second horizontal section 43 are transitionally connected by the inclined section 42. The angle formed between the inclined section 42 and the second horizontal section 43 is 120°, and the height of the inclined section 42 is 2 mm.

[0024] Furthermore, the outer diameter of the first graphite packing ring 10 , the second graphite packing ring 20 and the graphite filler ring 30 is 62 mm, the inner diameter is 42 mm, and the overall height is 54 mm.

[0025] Furthermore, the thickness of the first graphite packing ring 10 , the second graphite packing ring 20 and the graphite filler ring 30 are all 10 mm.

[0026] Furthermore, metal wires are provided inside the first graphite packing ring 10 and the second graphite packing ring 20, and metal mesh is provided inside the graphite packing ring 30. The materials of the metal wires and the metal mesh can be any one or two of stainless steel, carbon steel, nickel or titanium, which are used to provide support and locking effects on the internal graphite layer.

[0027] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A graphite packing assembly ring, characterized by: It includes a first graphite packing ring and a second graphite packing ring located below the first graphite packing ring. A plurality of superimposed graphite packing rings are arranged between the first graphite packing ring and the second graphite packing ring. The upper and lower ends of the graphite packing rings are respectively provided with step surfaces, and the step surfaces of adjacent graphite packing rings are adapted to each other.

2. The graphite packing assembly ring according to claim 1, characterized in that: The upper and lower ends of the graphite packing ring are respectively recessed inward to form the step surface.

3. The graphite packing assembly ring according to claim 1, characterized in that: The step surface includes, from outside to inside, a first horizontal section, an inclined section, and a second horizontal section; The first horizontal section and the second horizontal section are transitionally connected via the inclined section.

4. The graphite packing assembly ring according to claim 3, characterized in that: The angle formed between the inclined section and the second horizontal section is 120°.

5. The graphite packing assembly ring according to claim 3, characterized in that: The height of the inclined section is 2 mm.

6. The graphite packing assembly ring according to claim 1, characterized in that: The outer diameter of the first graphite packing ring, the second graphite packing ring and the graphite filler ring is 62 mm, and the inner diameter is 42 mm.

7. The graphite packing assembly ring according to claim 1, characterized in that: The thickness of the first graphite packing ring, the second graphite packing ring and the graphite filler ring are all 10 mm.

8. The graphite packing assembly ring according to claim 1, characterized in that: Metal wires are arranged inside the first graphite packing ring and the second graphite packing ring.

9. The graphite packing assembly ring according to claim 1, characterized in that: A metal wire mesh is arranged inside the graphite packing ring.

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