Mechanical seal with improved structure for pump

Abstract

The utility model discloses a mechanical seal with an improved structure for a pump, and relates to the technical field of sealing equipment. The first sealing disc is mounted at the top of the sealing cover; the sealing device has the advantages that the sealing cover, the sealing flange, the connecting sealing assembly and the reinforcing assembly are arranged, a buffer spring is installed in the connecting sealing assembly for buffering protection treatment when the connecting sealing assembly is installed, the equipment is protected, secondary sealing treatment is conducted on the pump through the sealing cover and the first sealing disc, and after installation is completed, the sealing effect is good. The reinforcing assembly is aligned to the interior of the first sealing disc for installation, the fastening base is matched with the connecting sleeve for limiting installation, the other side of the pump is sealed, the mounting hole is formed in the top of the sealing cover to be matched with internal pressure relief, when pressure relief is not needed, external filler is used for filling, and meanwhile connection with other shafts is facilitated; the overall use flexibility is improved, no power equipment is used on the whole, and the overall use and installation cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing equipment, in particular to a mechanical seal for pumps with an improved structure. Background Technique

[0002] At present, a pump is a mechanical equipment for transporting fluids or increasing the pressure of fluids, which transmits the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. Pumps are mainly used to transport liquids such as water, oil, acid-base solutions, emulsions, suspension liquids, and liquid metals, and can also transport liquid-gas mixtures and liquids containing suspended solids. After the pump casing is filled with the liquid to be transported, the impeller is driven by the shaft to rotate at high speed. The liquid between the blades must also rotate. Under the action of centrifugal force, the liquid is thrown from the center of the impeller to the outer edge and obtains energy, leaving the outer edge of the impeller at high speed and entering the volute pump casing. In the volute, the liquid decelerates due to the gradually expanding flow path, and part of the kinetic energy is converted into static pressure energy, and finally flows into the discharge pipe at a higher pressure and is sent to the required place.

[0003] In the prior art, the internal mechanical structure of the pump body is easily damaged when exposed to the air for a long time, greatly shortening the service life of the machine. At the same time, it is inconvenient for manual later maintenance, occupying a large number of equipment for installation and maintenance, increasing the overall use cost. Therefore, it is necessary to design a mechanical seal for pumps with an improved structure to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a mechanical seal for pumps with an improved structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A mechanical seal for pumps with an improved structure, including:

[0006] A sealing cover;

[0007] A first sealing disc, which is installed on the top of the sealing cover;

[0008] A sealing flange, which is installed on the bottom of the sealing cover;

[0009] A connecting sealing component, which is installed on the bottom of the sealing flange. The connecting sealing component includes a mounting disc and a first sealing sleeve. The mounting disc is installed on the bottom of the sealing flange, the first sealing sleeve is installed on the bottom of the mounting disc, a sealing ring is installed on the bottom of the first sealing sleeve, and a buffer spring extending into the first sealing disc is installed inside the mounting disc. The connecting sealing component is used for primary sealing of the pump structure during pump installation;

[0010] A reinforcement component, which is installed inside the first sealing disc. The reinforcement component is used for secondary sealing during pump installation.

[0011] The technical effects of adopting the above further solution are as follows: The pump is installed inside the first sealing disc, one end of the shaft connected to the pump is limited by the connecting sealing component. An installation disc, a first sealing sleeve and a sealing ring are sequentially installed outside the pump shaft to perform a primary sealing treatment on the shaft. When installing the connecting sealing component, a buffer spring is installed inside to perform a buffer protection treatment, which plays a protective effect on the equipment. The pump is subjected to a secondary sealing treatment through the sealing cover and the first sealing disc. After installation, the reinforcement component is aligned and installed inside the first sealing disc, and is limited and installed through the fastening seat and the connecting sleeve to seal the other side of the pump. An installation hole is provided at the top of the sealing cover to cooperate with internal pressure relief. When pressure relief is not required, it is filled with external fillers, and at the same time, it is convenient to connect other shafts, improving the overall flexibility of use. The overall does not use electrical equipment, saving the overall use and installation cost.

[0012] As a preferred solution of the present invention: A limit sleeve is installed inside the first sealing disc, and a second sealing disc is installed on the top of the limit sleeve. The second sealing disc is located below the reinforcement component, and the second sealing disc is used to perform a tertiary sealing on the structure of the pump during installation.

[0013] The technical effects of adopting the above further solution are as follows: The second sealing disc is used to perform a tertiary sealing on the structure of the pump during installation.

[0014] As a preferred solution of the present invention: A third sealing sleeve is installed at the bottom of the limit sleeve and inside the first sealing disc. A limit disc is installed at the bottom of the third sealing sleeve, and a limit guide rail for cooperating with the buffer spring is provided at the bottom of the limit disc. The limit guide rail is used to limit and install the buffer spring.

[0015] The technical effects of adopting the above further solution are as follows: The limit guide rail is used to limit and install the buffer spring.

[0016] As a preferred solution of the present invention: The reinforcement component includes a fastening seat and a second sealing sleeve. The fastening seat is installed inside the first sealing disc, the second sealing sleeve is installed on the top of the fastening seat, and a threaded installation rod is rotatably connected inside the second sealing sleeve. A screwing block is installed at one end of the top of the threaded installation rod. The threaded installation rod is used to drive the screwing block to be installed with the second sealing sleeve.

[0017] The technical effects of adopting the above further solution are as follows: The threaded installation rod is used to drive the screwing block to be installed with the second sealing sleeve.

[0018] As a preferred solution of the present invention: A connecting sleeve is installed inside the second sealing disc. One end of the bottom of the fastening seat extends into the connecting sleeve and is threadedly connected to the connecting sleeve. The connecting sleeve is used to reinforce and connect the reinforcement component.

[0019] The technical effect of adopting the above further solution is that the connecting sleeve is used for strengthening and connecting the strengthening components.

[0020] As a preferred solution of the present utility model: a sealing cover is sleeved on the top of the screwing block, and an installation hole is opened on the top of the sealing cover. The sealing cover is used for cooperating with the screwing block to be screwed and installed.

[0021] The technical effect of adopting the above further solution is that the sealing cover is used for cooperating with the screwing block to be screwed and installed.

[0022] As a preferred solution of the present utility model: a pressure relief port is installed on one side of the installation disc, and installation slots are opened on both sides of the pressure relief port. When the installation slots are used in cooperation, they are installed in a limiting manner, and the pressure relief port is used for internal discharge.

[0023] The technical effect of adopting the above further solution is that when the installation slots are used in cooperation, they are installed in a limiting manner, and the pressure relief port is used for internal discharge.

[0024] Compared with the prior art, the beneficial effects of the present utility model are as follows: a sealing cover, a first sealing disc, a sealing flange, a connecting sealing component and a strengthening component are provided. When in use, the pump is installed inside the first sealing disc, one end of the shaft connected to the pump is limited by the connecting sealing component, and an installation disc, a first sealing sleeve and a sealing ring are sequentially sleeved outside the pump shaft to perform a primary sealing treatment on the shaft. When the connecting sealing component is installed, a buffer spring is installed inside for buffer protection treatment, which plays a protective effect on the equipment. The pump is subjected to a secondary sealing treatment through the sealing cover and the first sealing disc. After installation, the strengthening component is aligned and installed inside the first sealing disc, and is limited and installed through the fastening seat and the connecting sleeve to seal the other side of the pump. An installation hole is opened on the top of the sealing cover to cooperate with internal pressure relief. When pressure relief is not required, it is filled with external fillers, and at the same time, it is convenient to connect other shafts, improving the overall flexibility of use. The whole does not use electric equipment, saving the overall use and installation cost, and improving the stability of the equipment during connection and use through the cooperation and installation of the strengthening component. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0026] Figure 2 It is an internal view of the partial structure of the present utility model;

[0027] Figure 3 It is an internal view of the structure of the connecting sealing component of the present utility model;

[0028] Figure 4 It is an enlarged view of the structure of the strengthening component of the present utility model.

[0029] In the figure: 1, sealing cover; 2, first sealing disc; 3, sealing flange; 4, connecting sealing assembly; 41, mounting disc; 42, first sealing sleeve; 43, sealing ring; 44, buffer spring; 45, pressure relief port; 46, mounting slot; 5, reinforcement assembly; 51, fastening seat; 52, second sealing sleeve; 53, threaded mounting rod; 54, turning block; 55, sealing cover; 6, limiting disc; 7, third sealing sleeve; 8, second sealing disc; 9, connecting sleeve; 10, limiting sleeve. Detailed implementation mode

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , the present invention provides a technical solution: a pump mechanical seal with an improved structure, including:

[0032] Sealing cover 1;

[0033] First sealing disc 2, the first sealing disc 2 is installed on the top of the sealing cover 1;

[0034] Sealing flange 3, the sealing flange 3 is installed at the bottom of the sealing cover 1;

[0035] Connecting sealing assembly 4, the connecting sealing assembly 4 is installed at the bottom of the sealing flange 3. The connecting sealing assembly 4 includes a mounting disc 41 and a first sealing sleeve 42. The mounting disc 41 is installed at the bottom of the sealing flange 3, the first sealing sleeve 42 is installed at the bottom of the mounting disc 41, the sealing ring 43 is installed at the bottom of the first sealing sleeve 42, and the buffer spring 44 extending into the first sealing disc 2 is installed inside the mounting disc 41. The connecting sealing assembly 4 is used for primary sealing of the pump structure during pump installation;

[0036] Reinforcement assembly 5, the reinforcement assembly 5 is installed inside the first sealing disc 2, and the reinforcement assembly 5 is used for secondary sealing during pump installation.

[0037] It can be understood that in the above solution, there is also a structure where a sealing cover 1, a first sealing disk 2, a sealing flange 3, a connecting sealing assembly 4, and a reinforcement assembly 5 are provided. When in use, the pump is installed inside the first sealing disk 2, and one end of the shaft connected to the pump is limited by the connecting sealing assembly 4. An installation disk 41, a first sealing sleeve 42, and a sealing ring 43 are sequentially sleeved outside the pump shaft to perform a primary sealing treatment on the shaft. When installing the connecting sealing assembly 4, a buffer spring 44 is installed inside for buffer protection treatment, which has a protective effect on the equipment. The pump is subjected to a secondary sealing treatment through the sealing cover 1 and the first sealing disk 2. After installation, the reinforcement assembly 5 is aligned and installed inside the first sealing disk 2, and is limited and installed through the fastening seat 51 and the connecting sleeve 9 to seal the other side of the pump. An installation hole is provided at the top of the sealing cover 55 to cooperate with internal pressure relief. When pressure relief is not required, it is filled with external fillers, and at the same time, it is convenient to connect other shafts, improving the overall flexibility of use. The overall structure does not use electrical equipment, saving the overall use and installation cost. The cooperation and installation of the reinforcement assembly 5 improve the stability of the equipment during connection and use.

[0038] Please refer to Figure 1 、 Figure 2 and Figure 4 , a limiting sleeve 10 is installed inside the first sealing disk 2, and a second sealing disk 8 is installed on the top of the limiting sleeve 10. The second sealing disk 8 is located below the reinforcement assembly 5.

[0039] It can be understood that in the above solution, there is also a structure where the second sealing disk 8 is used to perform a third sealing on the pump structure during pump installation.

[0040] Please refer to Figure 1 、 Figure 2 and Figure 3 , a third sealing sleeve 7 is installed at the bottom of the limiting sleeve 10 and inside the first sealing disk 2. A limiting disk 6 is installed at the bottom of the third sealing sleeve 7. A limiting guide rail for cooperating with the buffer spring 44 is provided at the bottom of the limiting disk 6. A pressure relief port 45 is installed on one side of the installation disk 41, and installation slots 46 are provided on both sides of the pressure relief port 45.

[0041] It can be understood that in the above solution, there is also a structure where the limiting guide rail is used to limit and install the buffer spring 44, the installation slots 46 cooperate with the equipment to limit and install during pump installation, and the pressure relief port 45 is used for internal drainage.

[0042] Please refer to Figure 1 、 Figure 2 and Figure 4, the reinforcement component 5 includes a fastening seat 51 and a second sealing sleeve 52. The fastening seat 51 is installed inside the first sealing disc 2, and the second sealing sleeve 52 is installed on the top of the fastening seat 51. A threaded mounting rod 53 is rotatably connected inside the second sealing sleeve 52. One end of the top of the threaded mounting rod 53 is installed with a turning block 54. A connecting sleeve 9 is installed inside the second sealing disc 8. One end of the bottom of the fastening seat 51 extends into the connecting sleeve 9 and is threadedly connected to the connecting sleeve 9. A sealing cover 55 is sleeved on the top of the turning block 54, and a mounting hole is opened on the top of the sealing cover 55.

[0043] It can be understood that in the above solution, there is also a threaded mounting rod 53 for driving the turning block 54 to be installed with the second sealing sleeve 52, a connecting sleeve 9 for strengthening the connection of the reinforcement component 5, and a sealing cover 55 for cooperating with the turning block 54 to be screwed and installed. The threaded mounting rod 53 is of a hollow structure and is installed in cooperation with an external shaft.

[0044] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention 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 invention.

[0045] In addition, the terms "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", "third", and "fourth" may explicitly or implicitly include at least one of such features.

[0046] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0047] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical seal for a pump with an improved structure, characterized in that: include: Sealing cover (1); A first sealing disk (2), the first sealing disk (2) being mounted on the top of the sealing cover (1); A sealing flange (3), the sealing flange (3) being mounted on the bottom of the sealing cover (1); A connecting seal assembly (4), the connecting seal assembly (4) is mounted on the bottom of the sealing flange (3), the connecting seal assembly (4) comprises a mounting disc (41) and a first sealing sleeve (42), the bottom of the sealing flange (3) is mounted with the mounting disc (41), the bottom of the mounting disc (41) is mounted with the first sealing sleeve (42), the bottom of the first sealing sleeve (42) is mounted with a sealing ring (43), the interior of the mounting disc (41) is mounted with a buffer spring (44) extending to the interior of the first sealing disc (2), the connecting seal assembly (4) is used to provide a primary seal for the pump structure when the pump is installed; A reinforcement component (5) is installed inside the first sealing disk (2), and the reinforcement component (5) is used to provide secondary sealing when the pump is installed.

2. The improved structure of the pump mechanical seal according to claim 1 is characterized in that: A limiting sleeve (10) is installed inside the first sealing disc (2), a second sealing disc (8) is installed on the top of the limiting sleeve (10), and the second sealing disc (8) is located below the reinforcement component (5). The second sealing disc (8) is used to perform triple sealing on the pump structure when the pump is installed.

3. The improved structure of the pump mechanical seal according to claim 2 is characterized in that: A third sealing sleeve (7) is installed at the bottom of the limiting sleeve (10) and inside the first sealing disc (2); a limiting disc (6) is installed at the bottom of the third sealing sleeve (7); a limiting guide rail used in conjunction with a buffer spring (44) is provided at the bottom of the limiting disc (6); the limiting guide rail is used to limit the installation of the buffer spring (44).

4. The improved structure of the pump mechanical seal according to claim 2 is characterized in that: The reinforcement component (5) comprises a fastening seat (51) and a second sealing sleeve (52); the first sealing disc (2) is internally mounted with the fastening seat (51); the top of the fastening seat (51) is mounted with the second sealing sleeve (52); the inside of the second sealing sleeve (52) is rotatably connected with a threaded mounting rod (53); a screwing block (54) is mounted at one end of the top of the threaded mounting rod (53); the threaded mounting rod (53) is used to drive the screwing block (54) to be mounted with the second sealing sleeve (52).

5. The improved structure of the pump mechanical seal according to claim 4 is characterized in that: A connecting sleeve (9) is installed inside the second sealing disk (8), and one end of the bottom of the fastening seat (51) extends into the interior of the connecting sleeve (9) and is threadedly connected to the connecting sleeve (9). The connecting sleeve (9) is used to reinforce the connection of the reinforcement component (5).

6. The improved structure of the pump mechanical seal according to claim 5 is characterized in that: The top of the twisting block (54) is covered with a sealing cover (55), and a mounting hole is provided on the top of the sealing cover (55). The sealing cover (55) is used to cooperate with the twisting block (54) for twisting installation.

7. The improved structure of the pump mechanical seal according to claim 1 is characterized in that: A pressure relief port (45) is installed on one side of the installation disc (41), and installation slots (46) are provided on both sides of the pressure relief port (45). The installation slots (46) are used for position limiting installation when used in conjunction with each other, and the pressure relief port (45) is used for internal drainage.

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