Mechanical sealing structure of boiler circulating pump

Abstract

The utility model discloses a mechanical sealing structure of a boiler circulating pump, and belongs to the technical field of mechanical sealing of circulating pumps, the mechanical sealing structure comprises a main body module and a fixing module, the main body module comprises a static ring main body, and one side of the static ring main body is movably connected with a movable ring main body; a first end cover and a second end cover are fixedly connected to the opposite sides of the static ring body and the moving ring body correspondingly, and the fixing module is arranged between the static ring body and the moving ring body and comprises two first fixing assemblies arranged between the static ring body and the moving ring body. Two stabilizing assemblies are arranged between the opposite sides of the static ring body and the movable ring body, through arrangement of the stabilizing assemblies, stability between the static ring body and the movable ring body can be preliminarily kept, and through arrangement of the first fixing assembly and the second fixing assembly, the stability of the static ring body and the movable ring body is improved. The stationary ring main body and the moving ring main body can be fixedly connected in two ways, so that the stationary ring main body and the moving ring main body can be kept stable.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical seals for circulating pumps, and more specifically, to a mechanical seal structure for a boiler circulating pump. Background Art

[0002] A circulating pump refers to a pump used to transport circulating liquid for reaction, absorption, separation, and regeneration of absorption liquid in a device. It has a low head and is only used to overcome the pressure drop in the circulation system. A low-head pump can be used. A circulating pump refers to the function of the pump, and a centrifugal pump refers to the structure of the pump. The two are completely two different concepts. The working principle of a circulating pump is that the pump used to circulate water is called a circulating pump. For example, the hot water in the water heating pipe is circulated by a circulating pump.

[0003] According to the search, the Chinese patent with publication number CN212690441U discloses a mechanical seal structure of a slurry circulation pump, which includes a shaft sleeve, a dynamic ring, a static ring, a dynamic ring end cover and a static ring end cover. The shaft sleeve and the static ring are respectively sleeved on the pump shaft of the slurry circulation pump, the static ring end cover is respectively sleeved on the shaft sleeve and the static ring, the dynamic ring is sleeved on the pump shaft of the slurry circulation pump, the inner ring of the static ring is provided with a mounting ring, the inner ring of the dynamic ring close to the static ring is respectively provided with a push ring capable of resisting the end of the mounting ring and a connecting ring capable of cooperating with the mounting ring, the end of the static ring close to the dynamic ring is provided with an insertion ring, the dynamic ring is provided with an insertion groove for cooperating with the insertion ring, and the outer rings of the adjacent ends of the dynamic ring end cover and the static ring end cover are respectively provided with mounting flanges. The application has good sealing performance and low cost, and can effectively prevent leakage of the slurry circulation pump.

[0004] With respect to the above-mentioned related technologies, the applicant believes that the dynamic ring and the static ring are connected and fixed only by bolt holes and bolts, and the fixing method is single, resulting in the connection between the dynamic ring and the static ring not being firm. Therefore, we propose a mechanical seal structure for a boiler circulating pump. Utility Model Content

[0005] In order to solve the above problems, the present application provides a mechanical seal structure of a boiler circulating pump, which adopts the following technical solution:

[0006] A mechanical seal structure of a boiler circulating pump includes a main body module and a fixed module, the main body module includes a stationary ring body, one side of the stationary ring body is movably connected to a moving ring body, the sides of the stationary ring body and the moving ring body opposite to each other are respectively fixedly connected to a first end cover and a second end cover, the fixed module is arranged between the stationary ring body and the moving ring body, the fixed module includes two first fixed components arranged between the stationary ring body and the moving ring body, two stabilizing components are arranged between the opposite sides of the stationary ring body and the moving ring body, and a plurality of second fixed components are also arranged between the stationary ring body and the moving ring body.

[0007] By adopting the above technical solution, the stability between the static ring body and the dynamic ring body can be maintained by the stabilizing component, and the static ring body and the dynamic ring body can be fixed twice by the first fixing component and the second fixing component, thereby maintaining the stability between the static ring body and the dynamic ring body.

[0008] Furthermore, the first fixing assembly includes two fixing blocks respectively fixedly connected to the surfaces of the first end cover and the second end cover, the interiors of the two fixing blocks are rotatably connected with rotating pins, and interference blocks are fixedly connected between the two ends of the two rotating pins.

[0009] By adopting the above technical solution, the interference block can be rotated.

[0010] Furthermore, the first fixing component also includes two hanging rings respectively fixedly connected to the two abutting blocks, and hooks are movably connected to the two hanging rings.

[0011] By adopting the above technical solution, the hook can be clamped on the hanging ring.

[0012] Furthermore, the first fixing assembly also includes a fastening spring fixedly connected between the two hooks.

[0013] By adopting the above technical solution, two hooks can be connected.

[0014] Furthermore, the stabilizing component includes a conical groove formed on one side of the stationary ring body, an elliptical groove is formed inside the conical groove, and the elliptical groove is connected to the conical groove.

[0015] By adopting the above technical solution, the conical groove and the elliptical groove can be connected.

[0016] Furthermore, the stabilizing assembly also includes a clamping block fixedly connected to one side of the dynamic ring body, and the clamping block is movably inserted into the interior of the conical groove and movably clamped into the interior of the elliptical groove.

[0017] By adopting the above technical solution, the stability between the static ring body and the dynamic ring body can be maintained.

[0018] Furthermore, the second fixing assembly includes a connecting pin movably inserted into the interior of the dynamic ring body, and the connecting pin penetrates and extends to the exterior of the static ring body.

[0019] By adopting the above technical solution, the static ring body and the dynamic ring body can be connected.

[0020] Furthermore, the second fixing assembly also includes a nut threadedly connected to the end of the connecting pin, and the nut is in conflict with the stationary ring body.

[0021] By adopting the above technical solution, the connecting pin can be fixed.

[0022] In summary, this application includes the following beneficial technical effects:

[0023] (1) By providing the first fixing assembly and the second fixing assembly, the connection between the stationary ring body and the dynamic ring body can be fixed in two ways, thereby maintaining the stability between the stationary ring body and the dynamic ring body;

[0024] (2) The interference block can be rotated by setting the rotating pin, and the two hooks can be connected by setting the fastening spring, so that the hook can be stably clamped on the hanging ring, and the clamping block can be clamped by setting the conical groove and the elliptical groove;

[0025] (3) The static ring body and the dynamic ring body can be connected by setting the connecting pin, and the connecting pin can be fixed by setting the nut. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of this application;

[0027] Figure 2 This is a schematic diagram of the explosion structure of this application;

[0028] Figure 3 This is a schematic diagram of the exploded structure of the first fixing assembly of the present application;

[0029] Figure 4 It is a schematic diagram of the exploded structure of the stabilizing assembly of the present application;

[0030] Figure 5 This is a schematic cross-sectional structure diagram of the stationary ring body of the present application.

[0031] Description of the numbers in the figure:

[0032] 100, main body module; 110, static ring body; 120, dynamic ring body; 130, first end cover; 140, second end cover;

[0033] 200, fixing module; 210, first fixing component; 211, fixing block; 212, rotating pin; 213, abutting block; 214, hanging ring; 215, hook; 216, tightening spring; 220, stabilizing component; 221, conical groove; 222, elliptical groove; 223, clamping block; 230, second fixing component; 231, connecting pin; 232, nut. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0035] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] The following is combined with Figure 1-5 This application is described in further detail.

[0038] See also Figure 1-5 A mechanical seal structure of a boiler circulating pump includes a main body module 100 and a fixed module 200. The main body module 100 includes a stationary ring body 110. A moving ring body 120 is movably connected to one side of the stationary ring body 110. A first end cover 130 and a second end cover 140 are fixedly connected to opposite sides of the stationary ring body 110 and the moving ring body 120, respectively. The fixed module 200 is arranged between the stationary ring body 110 and the moving ring body 120. The fixed module 200 includes two first fixed components 210 arranged between the stationary ring body 110 and the moving ring body 120. Two stabilizing components 220 are arranged between the opposite sides of the stationary ring body 110 and the moving ring body 120. A plurality of second fixed components 230 are also arranged between the stationary ring body 110 and the moving ring body 120.

[0039] By setting the stabilizing component 220, the stability between the stationary ring body 110 and the dynamic ring body 120 can be initially maintained. By setting the first fixing component 210 and the second fixing component 230, the connection between the stationary ring body 110 and the dynamic ring body 120 can be fixed in two ways, thereby maintaining the stability between the stationary ring body 110 and the dynamic ring body 120.

[0040] The first fixing assembly 210 includes two fixing blocks 211 respectively fixedly connected to the surfaces of the first end cover 130 and the second end cover 140, the interiors of the two fixing blocks 211 are rotatably connected with a rotating pin 212, and a resisting block 213 is fixedly connected between the two ends of the two rotating pins 212. The first fixing assembly 210 also includes two hanging rings 214 respectively fixedly connected to the two resisting blocks 213, and the two hanging rings 214 are movably connected with a hook 215. The first fixing assembly 210 also includes a fastening spring 216 fixedly connected between the two hooks 215. The stabilizing assembly 220 includes a conical groove 221 opened on one side of the static ring body 110, an elliptical groove 222 is opened on the inner side of the conical groove 221, and the elliptical groove 222 is connected to the conical groove 221. The stabilizing assembly 220 also includes a clamping block 223 fixedly connected to one side of the dynamic ring body 120, and the clamping block 223 is movably inserted into the inside of the conical groove 221 and movably clamped into the inside of the elliptical groove 222.

[0041] By inserting the clamping block 223 into the inside of the conical groove 221 and the elliptical groove 222, and then rotating the moving ring body 120, the clamping block 223 can be driven to rotate, so that the clamping block 223 can be clamped in the inside of the elliptical groove 222, so as to maintain the stability between the static ring body 110 and the dynamic ring body 120, and the two contact blocks 213 are rotated by rotating the pin 212 so that the two contact blocks 213 can be in contact with the static ring body 110 and the dynamic ring body 120, and then the fastening spring 216 is stretched, and then the hook 215 is clamped onto the hanging ring 214, so that the two contact blocks 213 can be connected, so that the static ring body 110 and the dynamic ring body 120 can be fixed once.

[0042] The second fixing component 230 includes a connecting pin 231 movably inserted into the interior of the dynamic ring body 120 , and the connecting pin 231 passes through and extends to the outside of the stationary ring body 110 . The second fixing component 230 also includes a nut 232 threadedly connected to the end of the connecting pin 231 , and the nut 232 is in conflict with the stationary ring body 110 .

[0043] The connecting pin 231 is passed through the dynamic ring body 120 and the stationary ring body 110 , and then the nut 232 is threadedly connected to the end of the connecting pin 231 , so that the nut 232 can contact the stationary ring body 110 , thereby fixing the stationary ring body 110 and the dynamic ring body 120 once.

[0044] The implementation principle of the embodiment of the present application is as follows: when the static ring body 110 and the dynamic ring body 120 need to be connected, firstly, the clamping block 223 is inserted into the inside of the elliptical groove 222 through the tapered groove 221, so that the static ring body 110 and the dynamic ring body 120 can collide with each other, then the dynamic ring body 120 is rotated, so that the elliptical groove 222 can cooperate with the tapered groove 221 to clamp the clamping block 223, then the connecting pin 231 is inserted into the inside of the dynamic ring body 120 and the static ring body 110 and extends to the outside of the static ring body 110, then the nut 232 is threadedly connected to the end of the connecting pin 231 and collided with the static ring body 110, Thereby, the connection between the static ring body 110 and the dynamic ring body 120 can be fixed, and then the two abutment blocks 213 can be rotated, thereby driving the rotating pin 212 to rotate inside the fixed block 211, so that the two abutment blocks 213 can respectively abut against the static ring body 110 and the dynamic ring body 120, and then the fastening spring 216 is stretched to make the two hooks 215 move away from each other, and then the two hooks 215 are respectively clamped on the two hanging rings 214, so that the connection between the static ring body 110 and the dynamic ring body 120 can be fixed again, so that the static ring body 110 and the dynamic ring body 120 can remain stable.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mechanical seal structure of a boiler circulating pump, comprising a main module (100) and a fixing module (200), characterized in that: The main body module (100) comprises a stationary ring body (110), one side of the stationary ring body (110) is movably connected to a moving ring body (120), and opposite sides of the stationary ring body (110) and the moving ring body (120) are respectively fixedly connected to a first end cover (130) and a second end cover (140), and the fixing module (200) is arranged between the stationary ring body (110) and the moving ring body (120); The fixing module (200) comprises two first fixing components (210) arranged between a stationary ring body (110) and a dynamic ring body (120), two stabilizing components (220) are arranged between opposite sides of the stationary ring body (110) and the dynamic ring body (120), and a plurality of second fixing components (230) are also arranged between the stationary ring body (110) and the dynamic ring body (120).

2. The mechanical seal structure of a boiler circulating pump according to claim 1, characterized in that: The first fixing assembly (210) comprises two fixing blocks (211) respectively fixedly connected to the surfaces of the first end cover (130) and the second end cover (140), the interiors of the two fixing blocks (211) are rotatably connected with a rotating pin (212), and a resistance block (213) is fixedly connected between the two ends of the two rotating pins (212).

3. The mechanical seal structure of a boiler circulating pump according to claim 2, characterized in that: The first fixing component (210) further comprises two hanging rings (214) respectively fixedly connected to the two abutting blocks (213), and the two hanging rings (214) are both movably connected with hooks (215).

4. The mechanical seal structure of a boiler circulating pump according to claim 3, characterized in that: The first fixing assembly (210) further comprises a fastening spring (216) fixedly connected between the two hooks (215).

5. The mechanical seal structure of a boiler circulating pump according to claim 4, characterized in that: The stabilizing component (220) comprises a conical groove (221) provided on one side of the stationary ring body (110), an elliptical groove (222) being provided on the inner side of the conical groove (221), and the elliptical groove (222) is in communication with the conical groove (221).

6. The mechanical seal structure of a boiler circulating pump according to claim 5, characterized in that: The stabilizing component (220) further comprises a clamping block (223) fixedly connected to one side of the dynamic ring body (120), and the clamping block (223) is movably inserted into the interior of the conical groove (221) and movably clamped into the interior of the elliptical groove (222).

7. The mechanical seal structure of a boiler circulating pump according to claim 6, characterized in that: The second fixing component (230) comprises a connecting pin (231) movably inserted into the interior of the moving ring body (120), and the connecting pin (231) penetrates and extends to the exterior of the stationary ring body (110).

8. The mechanical seal structure of a boiler circulating pump according to claim 7, characterized in that: The second fixing assembly (230) further comprises a nut (232) threadedly connected to the end of the connecting pin (231), and the nut (232) is in contact with the stationary ring body (110).

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