Mechanical seal seat for pump

Abstract

The utility model discloses a pump mechanical seal seat which comprises a rotary mechanical seal seat body formed around a center line, the mechanical seal seat body comprises a mechanical seal seat base, a mechanical seal seat body and a mechanical seal seat top seat, a lower cavity is defined by the mechanical seal seat base and the mechanical seal seat body, an upper cavity is defined by the mechanical seal seat top seat, and the upper cavity and the lower cavity are communicated to form a containing cavity. The diameter of the upper cavity is smaller than that of the lower cavity, the distance between the top face of the mechanical seal seat top seat and the top face of the mechanical seal seat base is L2, the distance between the top face of the mechanical seal seat top seat and the bottom face of the mechanical seal seat base is L1, and L1: L2 = 1: 0.8-0.95. The mechanical seal seat can be used for a long time.

Description

Technical Field

[0001] The utility model relates to a pump, and more specifically, to a mechanical seal seat for a pump. Background Art

[0002] During long-term use, pumps are prone to failures, among which burnout is a common form of failure. Pumps can burn out due to overheating of the motor. There are also cases where the motor burns out due to excessive load caused by damaged bearings. When a pump burns out, the burned parts need to be replaced, and the mechanical seal seat is one of the parts that need to be repaired and replaced, but the existing mechanical seal seats have a short service life. The burnout frequency of single-suction centrifugal pumps is relatively high. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a mechanical seal seat for a pump, which can be used for a long time.

[0004] A mechanical seal seat for a pump includes a rotary mechanical seal seat body formed around a center line. The mechanical seal seat body includes a mechanical seal seat base, a mechanical seal seat body, and a mechanical seal seat top. The mechanical seal seat base and the mechanical seal seat body enclose a lower cavity, and the mechanical seal seat top encloses an upper cavity. The upper cavity and the lower cavity are connected to form an accommodation cavity. The diameter of the upper cavity is smaller than that of the lower cavity. The distance between the top surface of the mechanical seal seat top of the mechanical seal seat top and the top surface of the mechanical seal seat base of the mechanical seal seat base is L2, and the distance between the top surface of the mechanical seal seat top of the mechanical seal seat top and the bottom surface of the mechanical seal seat base of the mechanical seal seat base is L1. L1:L2 = 1:0.8 - 0.95.

[0005] Optionally, L1:L2 = 1:0.9.

[0006] Optionally, L1:L2 = 1:0.93.

[0007] Optionally, L1:L2 = 1:0.85.

[0008] Optionally, connection holes are symmetrically arranged on the mechanical seal seat base centered on the center line, and the connection holes are provided with threads.

[0009] Compared with the prior art, the beneficial effect of the utility model lies in:

[0010] By limiting the ratio of L1 to L2, the mechanical seal seat for a pump provided by the utility model extends the service life of the mechanical seal seat. Brief Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0013] Explanation of reference numerals in the drawings: 1. Mechanical seal seat body; 2. Center line; 3. Mechanical seal seat base; 4. Mechanical seal seat body; 5. Mechanical seal seat top seat; 6. Lower cavity; 7. Upper cavity; 8. Accommodation cavity; 9. Connection hole; 10. Top surface of the mechanical seal seat top seat; 11. Top surface of the mechanical seal seat base; 12. Bottom surface of the mechanical seal seat base. Specific embodiments

[0014] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, and can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0015] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying 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 to the present utility model. In the description of the present utility model, "a plurality of" means two or more, unless otherwise specifically and precisely defined.

[0016] The terms "first", "second", "third", "fourth", etc. (if any) in the description, claims, and drawings of the present application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Apparently, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the scope of protection of this application.

[0018] The technical solutions of this utility model will be described in detail below with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0019] Embodiment 1

[0020] Please refer to Figure 1 , Figure 1 , which is a schematic diagram of the overall structure of a mechanical seal seat for a pump provided in this embodiment.

[0021] A mechanical seal seat for a pump includes a rotary mechanical seal seat body 1 formed around a center line 2. The mechanical seal seat body 1 includes a mechanical seal seat base 3, a mechanical seal seat body 4, and a mechanical seal seat top 5. The mechanical seal seat base 3 and the mechanical seal seat body 4 enclose a lower cavity 6, and the mechanical seal seat top 5 encloses an upper cavity 7. The diameter of the upper cavity 7 is smaller than that of the lower cavity 6, and the upper cavity 7 and the lower cavity 6 are connected to form a receiving cavity 8. The distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat base surface 11 of the mechanical seal seat base 3 is L2, and the distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat bottom surface 12 of the mechanical seal seat base 3 is L1, and L1:L2 = 1:0.9.

[0022] The receiving cavity 8 is used to install a shaft and a mechanical seal. Among them, the diameter of the upper cavity 7 is basically the same as the diameter of the shaft, and the mechanical seal is located between the shaft and the mechanical seal seat for the pump.

[0023] In one or more specific embodiments of this utility model, connection holes 9 are symmetrically arranged on the mechanical seal seat base 3 centered on the center line 2. The connection holes are provided with threads, and a connection bolt adjusts the mechanical seal clearance through the connection holes 9.

[0024] Embodiment 2

[0025] Please refer to again Figure 1, A mechanical seal seat for a pump, comprising a rotary mechanical seal seat body 1 formed around a center line 2. The mechanical seal seat body 1 includes a mechanical seal seat base 3, a mechanical seal seat body 4, and a mechanical seal seat top 5. The mechanical seal seat base 3 and the mechanical seal seat body 4 enclose a lower cavity 6, and the mechanical seal seat top 5 encloses an upper cavity 7. The diameter of the upper cavity 7 is smaller than that of the lower cavity 6, and the upper cavity 7 is communicated with the lower cavity 6 to form an accommodation cavity 8. The distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat top surface 11 of the mechanical seal seat base 3 is L2, and the distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat bottom surface 12 of the mechanical seal seat base 3 is L1, and L1:L2 = 1:0.93.

[0026] The accommodation cavity 8 is used for installing a shaft and a mechanical seal. Among them, the diameter of the upper cavity 7 is basically the same as that of the shaft, and the mechanical seal is located between the shaft and the mechanical seal seat for the pump.

[0027] In one or more specific embodiments of the present invention, connection holes 9 are symmetrically arranged on the mechanical seal seat base 3 with the center line 2 as the center. The connection holes are provided with threads, and the connection bolts adjust the mechanical seal clearance through the connection holes 9.

[0028] Embodiment 3

[0029] Please refer to again Figure 1 , A mechanical seal seat for a pump, comprising a rotary mechanical seal seat body 1 formed around a center line 2. The mechanical seal seat body 1 includes a mechanical seal seat base 3, a mechanical seal seat body 4, and a mechanical seal seat top 5. The mechanical seal seat base 3 and the mechanical seal seat body 4 enclose a lower cavity 6, and the mechanical seal seat top 5 encloses an upper cavity 7. The diameter of the upper cavity 7 is smaller than that of the lower cavity 6, and the upper cavity 7 is communicated with the lower cavity 6 to form an accommodation cavity 8. The distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat top surface 11 of the mechanical seal seat base 3 is L2, and the distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat bottom surface 12 of the mechanical seal seat base 3 is L1, and L1:L2 = 1:0.85.

[0030] The accommodation cavity 8 is used for installing a shaft and a mechanical seal. Among them, the diameter of the upper cavity 7 is basically the same as that of the shaft, and the mechanical seal is located between the shaft and the mechanical seal seat for the pump.

[0031] In one or more specific embodiments of the present invention, connection holes 9 are symmetrically arranged on the mechanical seal seat base 3 with the center line 2 as the center. The connection holes are provided with threads, and the connection bolts adjust the mechanical seal clearance through the connection holes 9.

[0032] Comparative Example 1

[0033] Please refer to again Figure 1, A mechanical seal seat for a pump, comprising a rotary-shaped mechanical seal seat body 1 formed around a center line 2. The mechanical seal seat body 1 includes a mechanical seal seat base 3, a mechanical seal seat body 4, and a mechanical seal seat top 5. The mechanical seal seat base 3 and the mechanical seal seat body 4 enclose a lower cavity 6, and the mechanical seal seat top 5 encloses an upper cavity 7. The diameter of the upper cavity 7 is smaller than that of the lower cavity 6, and the upper cavity 7 communicates with the lower cavity 6 to form an accommodation cavity 8. The distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat top surface 11 of the mechanical seal seat base 3 is L2, and the distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat bottom surface 12 of the mechanical seal seat base 3 is L1, and L1:L2 = 1:0.7.

[0034] The accommodation cavity 8 is used for installing a shaft and a mechanical seal. Among them, the diameter of the upper cavity 7 is basically the same as the diameter of the shaft, and the mechanical seal is located between the shaft and the mechanical seal seat for the pump.

[0035] Comparative Example 2

[0036] Please refer to again Figure 1 , A mechanical seal seat for a pump, comprising a rotary-shaped mechanical seal seat body 1 formed around a center line 2. The mechanical seal seat body 1 includes a mechanical seal seat base 3, a mechanical seal seat body 4, and a mechanical seal seat top 5. The mechanical seal seat base 3 and the mechanical seal seat body 4 enclose a lower cavity 6, and the mechanical seal seat top 5 encloses an upper cavity 7. The diameter of the upper cavity 7 is smaller than that of the lower cavity 6, and the upper cavity 7 communicates with the lower cavity 6 to form an accommodation cavity 8. The distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat top surface 11 of the mechanical seal seat base 3 is L2, and the distance between the mechanical seal seat top surface 10 of the mechanical seal seat top 5 and the mechanical seal seat bottom surface 12 of the mechanical seal seat base 3 is L1, and L1:L2 = 1:1.

[0037] The accommodation cavity 8 is used for installing a shaft and a mechanical seal. Among them, the diameter of the upper cavity 7 is basically the same as the diameter of the shaft, and the mechanical seal is located between the shaft and the mechanical seal seat for the pump.

[0038] Install the mechanical seal seats of Examples 1 - 3 and Comparative Examples 1 - 2 on the pump for use. Except for the different mechanical seal seats, the other conditions are the same, and a service life test is carried out. Among them, the service life of Examples 1 - 3 is much longer than that of Comparative Examples 1 - 2 (in fact, considering the economic cost, the service life of the mechanical seal seats in Comparative Examples 1 - 2 is too short and basically cannot be used as mechanical seal seats). Among Examples 1 - 3, the service life of Example 1 is the longest, followed by Example 3, and then Example 2.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pump seal seat, comprising a rotary seal seat body (1) formed around a center line (2), the seal seat body (1) comprising a seal seat base (3), a seal seat body (4) and a seal seat top seat (5), the seal seat base (3) and the seal seat body (4) enclose a lower cavity (6), the seal seat top seat (5) encloses an upper cavity (7), the upper cavity (7) is connected to the lower cavity (6) to form a receiving cavity (8), characterized in that: The diameter of the upper cavity (7) is smaller than the diameter of the lower cavity (6), the distance between the top surface (10) of the machine seal seat top seat (5) and the top surface (11) of the machine seal seat base (3) is L2, and the distance between the top surface (10) of the machine seal seat top seat and the bottom surface (12) of the machine seal seat base (3) is L1, and L1:L2=1:0.8-0.

95.

2. The pump seal seat according to claim 1, characterized in that: L1:L2=1:0.

9.

3. The pump seal seat according to claim 1, characterized in that: L1:L2=1:0.

93.

4. The pump seal seat according to claim 1, characterized in that: L1:L2=1:0.

85.

5. The pump seal seat according to any one of claims 1 to 4, characterized in that: The machine seal seat base (3) is symmetrically provided with connection holes (9) with the center line (2) as the center, and the connection holes are provided with threads.

6. The pump seal seat according to claim 1, characterized in that: The pump is a single-suction centrifugal pump.

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