Sealing ring for pump and pump

Abstract

The utility model belongs to the technical field of pumps, and provides a sealing ring for a pump and the pump, the sealing ring for the pump comprises a sealing ring body and a positioning part, the sealing ring body comprises a first sealing ring and a second sealing ring, the second sealing ring is arranged on the inner circumference of the first sealing ring, and a connecting part is arranged between the first sealing ring and the second sealing ring. The sealing ring body is placed in a mounting groove of the pump shell; a positioning part is arranged on the periphery of the first sealing ring and arranged in a positioning groove in the pump shell.

Description

Technical Field

[0001] The utility model belongs to the technical field of pumps, and in particular relates to a sealing ring for a pump and a pump. Background Art

[0002] A water pump is a mechanical device that transports liquids or pressurizes liquids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. During the working process of the water pump, a sealing ring is required to prevent liquid leakage to ensure the normal operation of the water pump. The sealing ring is an annular seal, which is mainly used for static sealing and dynamic sealing. Its materials are mainly rubber, plastic and metal, etc., and it has good sealing performance.

[0003] In existing water pump equipment, O-rings are usually used as seals. O-rings are a commonly used seal with a circular cross-section and are installed in corresponding grooves to prevent liquid or gas leakage. However, due to the complex working environment of water pumps, a single O-ring may not meet the sealing requirements.

[0004] In the prior art, a single O-ring is often used for sealing. When the water pump is under high temperature and high pressure for a long time, the seal may fail. At the same time, in order to achieve the sealing effect, the O-ring installation groove is usually slightly larger than the size of the O-ring, so that after installation, the water pump body and the interface are squeezed to fill the entire installation groove with the O-ring, thereby achieving the sealing effect. However, this method is very inconvenient for a single person to install because the sealing ring placed in the installation groove is easy to fall off. One hand is required to hold the water pump body and the sealing ring, and the other hand is used to install the interface, which is very inconvenient. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a pump sealing ring and a pump, so as to improve the sealing effect of the water pump, reduce the pressure on the O-ring, extend the service life of the sealing ring, and meet the demand for efficient and durable seals in the field of water pump equipment manufacturing.

[0006] The utility model aims to provide a pump, which adopts the above-mentioned pump sealing ring to increase the service life of the pump and enhance the customer's experience.

[0007] To achieve this purpose, the utility model adopts the following technical solutions:

[0008] A sealing ring for a pump, comprising a sealing ring body and a positioning portion, wherein the sealing ring body comprises a first sealing ring and a second sealing ring, wherein the second sealing ring is arranged on the inner periphery of the first sealing ring, a connecting portion is arranged between the first sealing ring and the second sealing ring, and the sealing ring body is placed in a mounting groove of a pump housing;

[0009] A positioning portion is arranged on the outer periphery of the first sealing ring, and the positioning portion is arranged in a positioning groove on the pump housing.

[0010] Preferably, the cross section of the first sealing ring is one of an O-shape and a trapezoid, and the cross section of the second sealing ring is one of an O-shape and a trapezoid.

[0011] Preferably, the central longitudinal sections of the first sealing ring and the second sealing ring are located in the same plane.

[0012] Preferably, the first sealing ring and the second sealing ring have the same cross-section.

[0013] Preferably, the side wall of the first sealing ring and the connecting portion are connected via a first transition portion; and / or the side wall of the second sealing ring and the connecting portion are connected via a second transition portion.

[0014] Preferably, the outer periphery of the first sealing ring is provided with a first edge portion;

[0015] And / or, a second edge portion is provided on the inner periphery of the second sealing ring.

[0016] Preferably, the outer periphery of the first sealing ring and the first edge portion are connected via a third transition portion; and / or the inner periphery of the second sealing ring and the second edge portion are connected via a fourth transition portion.

[0017] Preferably, the positioning portion is arranged on the first edge portion, and the positioning portion is arranged along the circumference of the first sealing ring;

[0018] The first edge portion has three groups of positioning portions evenly distributed in the circumference thereof, each group of positioning portions includes at least two positioning portions, two adjacent positioning portions in each group are spaced apart by a first preset angle α1, and the positioning portions in each group are spaced apart by a second preset angle α2;

[0019] The first preset angle α1 ranges from 20° to 30°, and the second preset angle α2 is 120°.

[0020] Preferably, the positioning portion comprises a positioning connection portion and a positioning column, the positioning column is arranged on the positioning connection portion and located at one side of the positioning connection portion, and the positioning connection portion is connected to the first edge portion.

[0021] A pump comprises the pump sealing ring.

[0022] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, the first sealing ring and the second sealing ring are arranged in parallel, and the first sealing ring is located at the outer periphery of the second sealing ring, and the two are connected via a connecting portion to form a whole. By placing the sealing ring body in the installation groove of the pump housing, the pressure on the single O-ring can be reduced, which helps to extend the service life of the pump sealing ring and meet the demand for efficient and durable seals in the field of water pump equipment manufacturing.

[0023] In addition, a positioning portion is provided outside the sealing ring body, and the positioning portion cooperates with the positioning groove on the pump casing. After the sealing ring body is installed in the installation groove, it is not easy to fall out of the positioning groove of the pump casing. Therefore, when a single person installs the pump casing and the interface, there is no need to hold the sealing ring separately by hand. The position of the sealing ring for the pump will not change or fall off, which is convenient for installation and replacement, reduces the operational difficulty of mechanical installation, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a partial structural schematic diagram of the pump in the utility model;

[0025] Figure 2 It is a schematic diagram of the structure of the pump housing and the pump sealing ring in the utility model;

[0026] Figure 3 It is a structural schematic diagram of the pump sealing ring in the utility model;

[0027] Figure 4 It is a front view of the pump sealing ring in the utility model;

[0028] Figure 5 For the utility model Figure 4 AA structural diagram;

[0029] Figure 6 For the utility model Figure 5 Enlarged view of point I in FIG.

[0030] Among them, 1. sealing ring body; 11. first sealing ring; 12. second sealing ring; 13. connecting part; 14. first transition part; 15. second transition part; 16. first edge part; 17. second edge part; 18. third transition part; 19. fourth transition part; 2. positioning part; 21. positioning connecting part; 22. positioning column; 3. pump housing; 4. interface. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0034] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0038] like Figure 1-Figure 6 As shown, in this embodiment, a pump sealing ring is provided, comprising a sealing ring body 1 and a positioning portion 2, wherein the sealing ring body 1 comprises a first sealing ring 11 and a second sealing ring 12, wherein the second sealing ring 12 is arranged on the inner periphery of the first sealing ring 11, and a connecting portion 13 is arranged between the first sealing ring 11 and the second sealing ring 12, and the sealing ring body 1 is placed in the mounting groove of the pump housing 3;

[0039] A positioning portion 2 is provided on the outer periphery of the first sealing ring 11 , and the positioning portion 2 is disposed in a positioning groove on the pump housing 3 .

[0040] In this embodiment, the first sealing ring 11 and the second sealing ring 12 are arranged in parallel, and the first sealing ring 11 is located on the outer periphery of the second sealing ring 12, and the two are connected via the connecting portion 13 to form a whole. By placing the sealing ring body 1 in the installation groove of the pump housing 3, the pressure on the single O-ring can be reduced, which helps to extend the service life of the pump sealing ring and meet the demand for efficient and durable seals in the field of water pump equipment manufacturing.

[0041] In addition, a positioning portion 2 is provided on the outside of the sealing ring body 1, and the positioning portion 2 cooperates with the positioning groove on the pump casing 3. After the sealing ring body 1 is installed in the installation groove, the positioning portion 2 is inserted into the positioning groove of the pump casing 3, so that the pump sealing ring is not easy to fall out of the positioning groove of the pump casing 3. Therefore, when a single person installs the pump casing 3 and the interface 4, there is no need to hold the sealing ring separately by hand. The position of the pump sealing ring will not change or fall off, which is convenient for installation and replacement, reduces the operational difficulty of mechanical installation, and improves work efficiency.

[0042] Preferably, the cross section of the first sealing ring 11 is one of an O-shaped and a trapezoidal shape, and the cross section of the second sealing ring 12 is one of an O-shaped and a trapezoidal shape. The sealing ring of this structure is easy to process and has low cost.

[0043] Preferably, the central longitudinal sections of the first sealing ring 11 and the second sealing ring 12 are located in the same plane. After installation, one side of the sealing ring body 1 contacts the pump housing 3, and the other side contacts the interface 4. The above arrangement can ensure that the two sides of the sealing ring body 1 are evenly stressed, thereby improving the sealing performance.

[0044] Preferably, the cross sections of the first sealing ring 11 and the second sealing ring 12 are the same to ensure the pressure bearing capacity of the first sealing ring 11 and the second sealing ring 12 .

[0045] Preferably, the cross section of the connecting portion 13 is a plane, and the connecting portion 13 is continuously arranged along the outer circumference of the second sealing ring 12, so the connecting portion 13 is a circular plane. The first sealing ring 11 and the second sealing ring 12 are connected by the connecting portion 13, thereby enhancing the overall structural strength and pressure bearing capacity of the pump sealing ring body 1.

[0046] Preferably, the side wall of the first sealing ring 11 and the connecting portion 13 are connected via a first transition portion 14, and / or the side wall of the second sealing ring 12 and the connecting portion 13 are connected via a second transition portion 15. The first transition portion 14 is provided to increase the structural strength between the inner periphery of the first sealing ring 11 and the connecting portion 13, and the second transition portion 15 is provided to increase the structural strength between the outer periphery of the second sealing ring 12 and the connecting portion 13.

[0047] Preferably, a first edge portion 16 is provided on the outer periphery of the first sealing ring 11 and / or a second edge portion 17 is provided on the inner periphery of the second sealing ring 12 .

[0048] In this embodiment, a first edge portion 16 is provided on the outer periphery of the first sealing ring 11. The sealing ring body 1 is placed in the installation groove of the pump casing 3. The first edge portion 16 is located between the pump casing 3 and the interface 4. It can enhance the structural strength of the sealing ring body 1. At the same time, it can further strengthen the sealing of the gap between the pump casing 3 and the interface 4.

[0049] In this embodiment, a second edge portion 17 is provided on the inner periphery of the second sealing ring 12 to enhance the structural strength of the inner periphery of the second sealing ring 12 , that is, to enhance the overall structural strength of the sealing ring body 1 .

[0050] Preferably, the outer periphery of the first sealing ring 11 and the first edge portion 16 are connected via a third transition portion 18. The third transition portion 18 is provided to increase the structural strength between the outer periphery of the first sealing ring 11 and the first edge portion 16.

[0051] Preferably, the inner periphery of the second sealing ring 12 and the second edge portion 17 are connected via a fourth transition portion 19 , and the fourth transition portion 19 is provided to increase the structural strength between the inner periphery of the second sealing ring 12 and the second edge portion 17 .

[0052] Preferably, the positioning portion 2 is disposed on the first edge portion 16 , and the positioning portion 2 is disposed along the circumference of the first sealing ring 11 to ensure that the sealing ring body 1 will not fall off after being installed in the installation groove of the pump housing 3 .

[0053] Preferably, three groups of positioning portions 2 are evenly distributed around the circumference of the first edge portion 16, each group of positioning portions 2 includes at least two, a first preset angle α1 is spaced between two adjacent positioning portions 2 in each group, and a second preset angle α2 is spaced between each group of positioning portions 2. The first preset angle α1 ranges from 20° to 30°. The second preset angle α2 is 120°.

[0054] Preferably, the positioning portion 2 includes a positioning connection portion 21 and a positioning column 22, the positioning column 22 is arranged on the positioning connection portion 21 and is located on one side of the positioning connection portion 21, and the positioning connection portion 21 is connected to the first edge portion 16. By providing the positioning connection portion 21 and the positioning column 22, the structure is simple, easy to form, and easy to install with the mounting groove on the pump housing 3.

[0055] Preferably, the positioning portion 2 and the first edge portion 16 are integrally injection molded.

[0056] This embodiment also provides a pump, including the pump seal ring. The pump adopts the pump seal ring to increase the service life of the pump and enhance the customer experience.

[0057] Preferably, the pump comprises a pump casing 3 and an interface 4 , the pump casing 3 is provided with a positioning groove and a mounting groove, a pump sealing ring is arranged in the positioning groove and the mounting groove, flanges are provided on the interface 4 and the pump casing 3 , and the interface 4 is connected to the pump casing 3 .

[0058] Preferably, a first connection hole is provided on the flange of the interface 4, and a second connection hole is provided on the flange of the pump housing 3. The first connection hole and the second connection hole are fastened and connected by bolts. When the bolts are tightened, the interface 4 and the pump housing 3 squeeze the pump sealing ring against each other, so that the pump sealing ring is deformed and fills the groove to achieve a sealing effect. Further preferably, the pump housing 3 and the interface 4 have the same number and position of bolt holes.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A sealing ring for a pump, characterized in that: The invention comprises a sealing ring body (1) and a positioning portion (2), wherein the sealing ring body (1) comprises a first sealing ring (11) and a second sealing ring (12), wherein the second sealing ring (12) is arranged on the inner periphery of the first sealing ring (11), and a connecting portion (13) is arranged between the first sealing ring (11) and the second sealing ring (12), and the sealing ring body (1) is placed in a mounting groove of a pump housing (3); A positioning portion (2) is provided on the outer periphery of the first sealing ring (11), and the positioning portion (2) is arranged in a positioning groove on the pump housing (3).

2. The pump seal ring according to claim 1, characterized in that: The cross section of the first sealing ring (11) is one of an O-shaped and a trapezoidal shape, and the cross section of the second sealing ring (12) is one of an O-shaped and a trapezoidal shape.

3. The pump seal ring according to claim 1 or 2, characterized in that: The central longitudinal sections of the first sealing ring (11) and the second sealing ring (12) are located in the same plane.

4. The pump seal ring according to claim 1 or 2, characterized in that: The first sealing ring (11) and the second sealing ring (12) have the same cross section.

5. The pump seal ring according to claim 1 or 2, characterized in that: The side wall of the first sealing ring (11) and the connecting portion (13) are connected via a first transition portion (14); and / or the side wall of the second sealing ring (12) and the connecting portion (13) are connected via a second transition portion (15).

6. The pump seal ring according to claim 1 or 2, characterized in that: The outer periphery of the first sealing ring (11) is provided with a first edge portion (16); And / or, the inner periphery of the second sealing ring (12) is provided with a second edge portion (17).

7. The pump seal ring according to claim 6, characterized in that: The outer periphery of the first sealing ring (11) and the first edge portion (16) are connected via a third transition portion (18); and / or the inner periphery of the second sealing ring (12) and the second edge portion (17) are connected via a fourth transition portion (19).

8. The pump seal ring according to claim 6, characterized in that: The positioning portion (2) is arranged on the first edge portion (16), and the positioning portion (2) is arranged along the circumference of the first sealing ring (11); Three groups of positioning portions (2) are evenly distributed in the circumferential direction of the first edge portion (16), each group of positioning portions (2) comprises at least two positioning portions, two adjacent positioning portions (2) in each group are spaced apart by a first preset angle α1, and the positioning portions (2) in each group are spaced apart by a second preset angle α2; The first preset angle α1 ranges from 20° to 30°, and the second preset angle α2 is 120°.

9. The pump seal ring according to claim 8, characterized in that: The positioning portion (2) comprises a positioning connection portion (21) and a positioning column (22); the positioning column (22) is arranged on the positioning connection portion (21) and is located on one side of the positioning connection portion (21); and the positioning connection portion (21) is connected to the first edge portion (16).

10. A pump, characterized in that: A pump sealing ring comprising the sealing ring according to any one of claims 1 to 9.

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