Mechanical seal water pump structure with double-ring leakage-proof structure

Abstract

The mechanical seal water pump structure with the double-ring leakage-proof structure comprises a pump shaft, a movable sealing ring is arranged in the middle of the pump shaft, a first static sealing ring and a second static sealing ring are arranged at the two ends of the movable sealing ring, and the first static sealing ring and the second static sealing ring are both rotationally connected with the movable sealing ring. An adjusting mechanism for adjusting the pressure between the movable sealing ring and the first static sealing ring and the pressure between the movable sealing ring and the second static sealing ring is arranged on the inner side of the second static sealing ring, and sealing filler is arranged on the outer side of the movable sealing ring; the adjusting mechanism is located in the pump body and comprises an adjusting cylinder, the adjusting cylinder is in threaded connection with the pump body, and one end of the adjusting cylinder is located outside the pump body. According to the mechanical sealing water pump structure, through the arranged adjusting assembly, after the mechanical sealing water pump structure is used for a long time, the second static sealing ring and the movable sealing ring can be extruded, the contact pressure of the sealing faces among the first static sealing ring, the second static sealing ring and the movable sealing ring is adjusted, and then the mechanical sealing water pump structure can keep a good sealing state conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical water pumps, in particular to a mechanical sealing water pump structure with a double-ring anti-leakage structure. Background Art

[0002] Mechanical water pump is a common mechanical equipment used to transport liquid from one location to another. It is usually used in various applications in the industrial field, such as water supply and drainage systems, chemical production, petrochemical industry, etc.

[0003] When a mechanical water pump is in use, in order to improve the sealing effect of the mechanical water pump, a mechanical seal structure will be installed between the pump body and the shaft to prevent liquid from leaking from the shaft seal;

[0004] The prior art with patent number CN 216343009 U discloses: comprising a static ring, a dynamic ring and a spring, wherein the static ring, the dynamic ring and the spring are sequentially installed on the pump shaft of the water pump, an annular fixing sleeve is correspondingly installed on the pump shaft, the dynamic ring is correspondingly installed on one side of the annular fixing sleeve, the static ring is rotatably installed on the pump shaft and is located on one side of the dynamic ring, the grinding surface of the static ring is in contact with and connected to the grinding surface of the dynamic ring, the static ring is fixedly connected to the pump body of the water pump; the inner wall of the annular fixing sleeve on the side away from the dynamic ring has a rib extending inwardly around it, the pump shaft is a stepped shaft, and an O-ring is correspondingly installed between the shoulder of the pump shaft and the rib; the spring is correspondingly installed on the pump shaft and is located on the side of the annular fixing sleeve away from the dynamic ring. The utility model can not only improve the sealing performance of the structure, but also effectively separate the dynamic ring from the static ring, effectively prevent mechanical seal failure of the water pump, and ensure the normal operation of the water pump;

[0005] The above patent document discloses a water pump mechanical seal structure to solve the problem of easy adhesion between the static ring and the dynamic ring; although the water pump mechanical seal structure of the above patent can prevent the problem of sealing failure of the water pump to a certain extent, after the water pump mechanical seal structure is used for a long time, the contact pressure between the dynamic sealing ring and the static sealing ring will decrease, thereby reducing the sealing effect of the water pump mechanical seal structure.

[0006] In summary, there is a need for a mechanical seal water pump structure that is easy to use for a long time. Utility Model Content

[0007] In view of the deficiencies in the prior art, the utility model provides a mechanical seal water pump structure with a double-ring anti-leakage structure, which solves the problems mentioned in the background technology.

[0008] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0009] A mechanical seal water pump structure with a double-ring leak-proof structure comprises a pump shaft, a dynamic seal ring is arranged in the middle of the pump shaft, a static seal ring 1 and a static seal ring 2 are arranged at both ends of the dynamic seal ring, the static seal ring 1 and the static seal ring 2 are both rotatably connected with the dynamic seal ring, an adjusting mechanism for adjusting the pressure between the dynamic seal ring and the static seal ring 1 and the static seal ring 2 is arranged on the inner side of the static seal ring 2, and a sealing filler is arranged on the outer side of the dynamic seal ring;

[0010] The adjusting mechanism is located inside the pump body, and includes an adjusting cylinder, which is threadedly connected to the pump body, one end of which is located outside the pump body, and an adjusting section is formed at the end of the adjusting cylinder located outside the pump body. An adjusting component is provided on the side of the adjusting cylinder, which is fixedly connected to the second static sealing ring, and the adjusting component is in sliding contact with the end of the dynamic sealing ring.

[0011] Furthermore, the adjustment component includes a push cylinder 1, a push cylinder 2 and a spring. The push cylinder 1 is fixedly arranged on the side of the adjustment cylinder. The push cylinder 1 end is provided with a push cylinder 2. An adjustment groove is arranged inside the push cylinder 1. A spring is arranged inside the adjustment groove. An adjustment section is arranged at the end of the push cylinder 2. The adjustment section is engaged and slidably engaged with the adjustment groove.

[0012] Furthermore, one end of the push tube is in close contact with the end of the dynamic ring body, and the outer side of the one end of the push tube is fixedly connected to the inner side of the second sealing mounting seat.

[0013] Furthermore, the static sealing ring 1 includes a sealing mounting seat 1 and a static ring body 1. The sealing mounting seat 1 is fixedly arranged inside the pump body, and the static ring body 1 is arranged on the inner side of the sealing mounting seat 1. The inner side of the static ring body 1 rotates in contact with the outer side of the pump shaft.

[0014] Furthermore, the dynamic sealing ring includes a dynamic ring body, a first connecting ring and a second connecting ring. The dynamic ring body is fixedly arranged on the outside of the pump shaft. The first connecting ring is fixedly arranged on the outside of one end of the dynamic ring body, and the second connecting ring is fixedly arranged on the other end of the dynamic ring body.

[0015] Furthermore, the second static sealing ring includes a second sealing mounting seat and a second static ring body. The second sealing mounting seat is fixed inside the pump body. The second static ring body is arranged inside the second sealing mounting seat. The second static ring body fits and slides with the outer side of the dynamic ring body and the outer side of the second connecting ring.

[0016] The utility model provides a mechanical seal water pump structure with a double-ring leak-proof structure. Compared with the prior art, it has the following beneficial effects:

[0017] By setting up the adjustment component, after the mechanical seal water pump structure has been used for a long time, the static seal ring 2 and the dynamic seal ring can be squeezed to adjust the contact pressure of the sealing surfaces between the static seal ring 1, the static seal ring 2 and the dynamic seal ring, thereby facilitating the mechanical seal water pump structure to maintain a good sealing state. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic structural diagram of a mechanical seal water pump structure with a double-ring anti-leakage structure of the utility model is shown;

[0020] Figure 2 Shows an installation schematic diagram of the utility model;

[0021] Figure 3 The structure schematic diagram of the dynamic sealing ring of the utility model is shown;

[0022] Figure 4 The schematic diagram of the structure of the adjustment mechanism of the utility model is shown;

[0023] As shown in the figure: 1. Pump shaft; 2. Static sealing ring 1; 21. Seal mounting seat 1; 22. Static ring body 1; 3. Dynamic sealing ring; 31. Dynamic ring body; 32. First connecting ring; 33. Second connecting ring; 4. Static sealing ring 2; 41. Seal mounting seat 2; 42. Static ring body 2; 5. Sealing packing; 6. Adjusting mechanism; 61. Adjusting cylinder; 62. Push cylinder 1; 63. Push cylinder 2; 64. Spring; 7. Pump body. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0025] In order to solve the technical problems in the background technology, a mechanical seal water pump structure with a double-ring leak-proof structure is provided as follows:

[0026] Combination Figure 1-Figure 4As shown, the utility model provides a mechanical seal water pump structure with a double-ring leak-proof structure, including a pump shaft 1, a dynamic seal ring 3 is provided in the middle of the pump shaft 1, static seal rings 2 and 4 are provided at both ends of the dynamic seal ring 3, the static seal rings 1 and 2 are rotatably connected with the dynamic seal ring 3, an adjusting mechanism 6 for adjusting the pressure between the dynamic seal ring 3 and the static seal rings 1 and 2 is provided on the inner side of the static seal ring 2, and a sealing packing 5 is provided on the outer side of the dynamic seal ring 3; the adjusting mechanism 6 is located inside the pump body 7, and the adjusting mechanism 6 includes an adjusting cylinder 61, and the adjusting cylinder 61 is connected to the pump body 7. The pump body 7 is threadedly connected, one end of the adjusting cylinder 61 is located outside the pump body 7, and an adjusting section is formed at the end of the adjusting cylinder 61 located outside the pump body 7. An adjusting component is provided on the side of the adjusting cylinder 61, and the adjusting component is fixedly connected to the static sealing ring 2 4. The adjusting component is in sliding contact with the end of the dynamic sealing ring 3. Through the provided adjusting component, after the mechanical seal water pump structure has been used for a long time, the static sealing ring 2 4 and the dynamic sealing ring 3 can be squeezed to adjust the contact pressure of the sealing surfaces between the static sealing ring 1 2, the static sealing ring 2 4 and the dynamic sealing ring 3, thereby facilitating the mechanical seal water pump structure to maintain a good sealing state;

[0027] In this embodiment, the adjustment component includes a push cylinder 1 62, a push cylinder 2 63 and a spring 64. The push cylinder 1 62 is fixedly arranged on the side of the adjustment cylinder 61. The push cylinder 1 62 is provided with a push cylinder 2 63 at the end thereof. An adjustment groove is provided inside the push cylinder 1 62. A spring 64 is provided inside the adjustment groove. An adjustment section is provided at the end of the push cylinder 2 63. The adjustment section engages and slides with the adjustment groove. The spring 64 provided inside the adjustment groove can buffer the supporting force of the adjustment component to avoid excessive contact between the sealing surfaces of the static sealing ring 1 2, the static sealing ring 2 4 and the dynamic sealing ring 3.

[0028] In this embodiment, the end of the push cylinder 1 62 is in close contact with the end of the dynamic ring body 31, and the outer side of the end of the push cylinder 1 62 is fixedly connected to the inner side of the sealing mounting seat 2 41. The push cylinder 1 62 can synchronously squeeze the sealing mounting seat 2 41 and the dynamic ring body 31 after being subjected to force;

[0029] The implementation principle of the first embodiment is as follows: when the mechanical seal water pump structure is installed inside the water pump, the dynamic seal ring 3, the static seal ring 1 2 and the static seal ring 2 4 can cooperate with each other to seal the connection between the pump body 7 and the pump shaft 1. After the mechanical seal water pump has been used for a long time, the contact pressure of the sealing surfaces between the dynamic seal ring 3, the static seal ring 1 2 and the static seal ring 2 4 decreases, and the adjusting cylinder 61 in the adjusting mechanism 6 is rotated. The adjusting cylinder 61 threadedly connected to the pump body 7 will squeeze the push cylinder 1 62, and the push cylinder 1 62 will push the push cylinder 2 63 to squeeze the dynamic seal ring 3 and the static seal ring 1 2, so as to achieve the purpose of changing the contact pressure of the sealing surfaces between the dynamic seal ring 3, the static seal ring 1 2 and the static seal ring 2 4, so that the mechanical seal water pump structure can maintain a good sealing state.

[0030] Embodiment 1:

[0031] like Figure 1-Figure 4 As shown, based on the above embodiment, this embodiment further provides the following contents:

[0032] In order to enable the mechanical seal water pump structure to achieve the function of efficient sealing, this embodiment provides the following design:

[0033] The static sealing ring 2 includes a sealing mounting seat 21 and a static ring body 22. The sealing mounting seat 21 is fixedly arranged inside the pump body 7. The static ring body 22 is arranged inside the sealing mounting seat 21. The inner side of the static ring body 22 is fitted and rotated with the outer side of the pump shaft 1. The static ring body 22 can seal and block the liquid by fitting and rotating with the outer side of the pump shaft 1.

[0034] In this embodiment, the dynamic sealing ring 3 includes a dynamic ring body 31, a first connecting ring 32 and a second connecting ring 33. The dynamic ring body 31 is fixedly arranged on the outside of the pump shaft 1. The first connecting ring 32 is fixedly arranged on the outside of one end of the dynamic ring body 31, and the second connecting ring 33 is fixedly arranged on the other end of the dynamic ring body 31. The first connecting ring 32 can be fitted and sealed with the static ring body 22.

[0035] In this embodiment, the static sealing ring 4 includes a sealing mounting seat 41 and a static ring body 42. The sealing mounting seat 41 is fixedly arranged inside the pump body 7. A static ring body 42 is arranged inside the sealing mounting seat 41. The static ring body 42 fits and slides with the outer side of the dynamic ring body 31 and the outer side of the second connecting ring 33. Under the fitting and sliding action of the static ring body 42 and the outer side of the dynamic ring body 31 and the outer side of the second connecting ring 33, the static ring body 22 can cooperate with the fitting contact with the first connecting ring 32 to achieve double sealing of the pump shaft 1, thereby ensuring that the mechanical seal water pump structure has a good sealing and leak-proof effect.

[0036] The implementation principle of the second embodiment is: when the mechanical seal water pump structure is installed inside the water pump for use, the first connecting ring 32 and the second connecting ring 33 in the dynamic sealing ring 3 can rotate with the pump shaft 1, and the rotating first connecting ring 32 will be in close contact with the static ring body 1 22, and the second connecting ring 33 will be in close contact with the static ring body 2 42. Under the double contact sealing action of the first connecting ring 32 and the static ring body 1 22 and the second connecting ring 33 and the static ring body 2 42, it can be ensured that the mechanical seal water pump structure has a good sealing and leak-proof effect.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanical seal water pump structure with a double-ring leak-proof structure, characterized in that: The pump shaft (1) comprises a dynamic sealing ring (3) provided in the middle of the pump shaft (1), a static sealing ring (2) and a static sealing ring (4) provided at both ends of the dynamic sealing ring (3), the static sealing ring (2) and the static sealing ring (4) being rotatably connected to the dynamic sealing ring (3), an adjusting mechanism (6) for adjusting the pressure between the dynamic sealing ring (3) and the static sealing ring (2) and the static sealing ring (4) being provided on the inner side of the static sealing ring (4), and a sealing filler (5) being provided on the outer side of the dynamic sealing ring (3); The adjusting mechanism (6) is located inside the pump body (7), and comprises an adjusting cylinder (61). The adjusting cylinder (61) is threadedly connected to the pump body (7), one end of the adjusting cylinder (61) is located outside the pump body (7), an adjusting section is formed at the end of the adjusting cylinder (61) located outside the pump body (7), an adjusting component is provided on the side of the adjusting cylinder (61), the adjusting component is fixedly connected to the second static sealing ring (4), and the adjusting component is in sliding contact with the end of the dynamic sealing ring (3).

2. A mechanical seal water pump structure with a double-ring leak-proof structure according to claim 1, characterized in that: The adjustment assembly comprises a push cylinder 1 (62), a push cylinder 2 (63) and a spring (64); the push cylinder 1 (62) is fixedly arranged on the side of the adjustment cylinder (61); the push cylinder 2 (63) is arranged at the end of the push cylinder 1 (62); an adjustment groove is arranged inside the push cylinder 1 (62); a spring (64) is arranged inside the adjustment groove; and an adjustment section is arranged at the end of the push cylinder 2 (63); the adjustment section is engaged and slidably engaged with the adjustment groove.

3. A mechanical seal water pump structure with a double-ring leak-proof structure according to claim 2, characterized in that: The end of the push tube one (62) is in close contact with the end of the moving ring body (31), and the outer side of the end of the push tube one (62) is fixedly connected to the inner side of the sealing mounting seat two (41).

4. A mechanical seal water pump structure with a double-ring leak-proof structure according to claim 1, characterized in that: The static sealing ring (2) comprises a sealing mounting seat (21) and a static ring body (22); the sealing mounting seat (21) is fixedly arranged inside the pump body (7); the static ring body (22) is arranged on the inner side of the sealing mounting seat (21); the inner side of the static ring body (22) rotates in contact with the outer side of the pump shaft (1).

5. The mechanical seal water pump structure with a double-ring leak-proof structure according to claim 1, characterized in that: The dynamic sealing ring (3) comprises a dynamic ring body (31), a first connecting ring (32) and a second connecting ring (33); the dynamic ring body (31) is fixedly arranged on the outside of the pump shaft (1); the first connecting ring (32) is fixedly arranged on the outside of one end of the dynamic ring body (31); and the second connecting ring (33) is fixedly arranged on the other end of the dynamic ring body (31).

6. A mechanical seal water pump structure with a double-ring leak-proof structure according to claim 1, characterized in that: The second static sealing ring (4) comprises a second sealing mounting seat (41) and a second static ring body (42). The second sealing mounting seat (41) is fixedly arranged inside the pump body (7). The second static ring body (42) is arranged inside the second sealing mounting seat (41). The second static ring body (42) is slidably fitted with the outer side of the dynamic ring body (31) and the outer side of the second connecting ring (33).

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