Condensate pump sealing device

Abstract

The condensate pump sealing device is fixedly arranged on the periphery of a pump shaft through a shaft sleeve, a condensate pump is sealed through a mechanical sealing module arranged between the shaft sleeve and a shell, at least two cooling chambers are correspondingly formed through at least two sets of cooling water inlets and cooling water outlets, and an isolating ring is arranged between every two adjacent cooling chambers. The at least two cooling chambers are mutually independent; thus, due to the fact that the mechanical sealing module is in friction dynamic sealing, friction heat is generated in the friction sealing process, each area of the mechanical sealing module can be cooled through cooling water in the corresponding independent cooling chamber through the formed at least two independent cooling chambers, the cooling effect on the mechanical sealing module is improved, and the service life of the mechanical sealing module is prolonged. The sealing effect of the condensate pump sealing device is improved, and potential safety hazards in the condensate pump operation process are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of condensate pumps, and more specifically, to a condensate pump sealing device. Background Art

[0002] In the prior art, a mechanical sealing device is usually used to seal the condensate pump to prevent air from entering the condensate pump; however, the sealing effect of the current mechanical sealing device is poor, resulting in seal leakage on the pump side of the condensate pump, causing safety hazards during the operation of the condensate pump.

[0003] In summary, how to improve the sealing effect of the condensate pump sealing device and reduce the safety hazards during the operation of the condensate pump is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a condensate pump sealing device to improve the sealing effect of the condensate pump sealing device and reduce the safety hazards during the operation of the condensate pump.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] A condensate pump sealing device comprises: a sleeve, the sleeve being fixedly mounted on the outer periphery of a pump shaft so that the sleeve and the pump shaft rotate synchronously; a mechanical seal module, the mechanical seal module being arranged between the sleeve and a housing, the mechanical seal module being used to seal the condensate pump; the housing being provided with at least two groups of cooling water inlets and cooling water outlets, the cooling water inlets and the cooling water outlets in each group being interconnected to form at least two cooling chambers respectively, at least two of the cooling chambers being used to cool the mechanical seal module, and at least two of the cooling chambers being distributed in sequence along the axial direction of the sleeve; an isolation ring being provided between adjacent cooling chambers, the axis of the isolation ring being consistent with the axis of the sleeve.

[0007] In some embodiments, the shell includes a shell body and an adapter, a pressure cover is provided between the shell body and the adapter, the shell body, the pressure cover, and the adapter are fixed together by bolts, and the shell body, the pressure cover, and the adapter are distributed in sequence along the axial direction of the sleeve.

[0008] In some embodiments, the mechanical sealing module includes: a first dynamic ring, which is fixedly connected to the sleeve; a first static ring, which is fixedly connected to the shell body, and the end face of the first static ring is in contact with the end face of the first dynamic ring; a second dynamic ring, which is fixedly connected to the sleeve; and a second static ring, which is fixedly connected to the adapter, and the end face of the second static ring is in contact with the end face of the second dynamic ring.

[0009] In some embodiments, the sleeve is fixedly connected to a first transmission ring via a connecting pin, and the first transmission ring is transmission-connected to the first movable ring so that the first movable ring rotates synchronously with the sleeve; the sleeve is fixedly connected to a second transmission ring via a connecting key, and the second transmission ring is transmission-connected to the second movable ring so that the second movable ring rotates synchronously with the sleeve.

[0010] In some embodiments, the end face of one end of the first moving ring is connected to the first end of the first elastic member, and the second end of the first elastic member is connected to the interior of the first transmission ring. Under the action of the first elastic member, the end face of the first moving ring and the end face of the first static ring are kept in contact with each other; the end face of one end of the second moving ring is connected to the first end of the second elastic member, and the second end of the second elastic member is connected to the interior of the second transmission ring. Under the action of the second elastic member, the end face of the second moving ring and the end face of the second static ring are kept in contact with each other.

[0011] In some embodiments, the shell body is provided with a first cooling water inlet and a first cooling water outlet, and the line connecting the first cooling water outlet and the first cooling water outlet passes through the axis of the pump shaft; the adapter is provided with a second cooling water inlet and a second cooling water outlet, and the line connecting the second cooling water inlet and the second cooling water outlet passes through the axis of the pump shaft; the line connecting the first cooling water inlet and the first cooling water outlet, and the line connecting the second cooling water inlet and the second cooling water outlet have an angle.

[0012] In some embodiments, on a projection plane along the axial direction of the pump shaft, a line connecting the first cooling water inlet and the first cooling water outlet, and a line connecting the second cooling water inlet and the second cooling water outlet are perpendicular to each other.

[0013] In some embodiments, a first cooling chamber is formed between the first cooling water inlet and the first cooling water outlet; a second cooling chamber is formed between the second cooling water inlet and the second cooling water outlet; the first cooling chamber and the second cooling chamber are isolated from each other by an isolation ring, the outer ring of the isolation ring is fixedly connected to the shell body, and the inner ring of the isolation ring is rotatably matched with the shaft sleeve; seals are provided between the isolation ring and the shell body and the shaft sleeve.

[0014] In some embodiments, a first sealing ring is provided between the shaft sleeve and the pump shaft;

[0015] And / or, a second sealing ring is provided between the gland and the adapter.

[0016] In some embodiments, the outer ring of the sleeve is further provided with a clamping module; the end face of the shell is further provided with a plurality of lifting screw holes, and the plurality of lifting screw holes are distributed in sequence along the circumference of the end face of the shell.

[0017] The condensate pump sealing device provided in the present application is fixed to the outer periphery of the pump shaft through a shaft sleeve, and seals the condensate pump through a mechanical sealing module arranged between the shaft sleeve and the housing, and forms at least two cooling chambers correspondingly through at least two groups of cooling water inlets and cooling water outlets, and an isolation ring is arranged between adjacent cooling chambers, so that the at least two cooling chambers are independent of each other; in this way, since the mechanical sealing module is a friction dynamic seal, friction heat is generated during the friction sealing process, and through the at least two independent cooling chambers formed, each area of the mechanical sealing module can be cooled by the cooling water in the independent cooling chamber, thereby improving the cooling effect of the mechanical sealing module, improving the sealing effect of the condensate pump sealing device, and reducing safety hazards during the operation of the condensate pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0019] Figure 1 A schematic structural diagram of a condensate pump sealing device provided in an embodiment of the present application;

[0020] Figure 2 A top view of the condensate pump sealing device provided in an embodiment of the present application.

[0021] Description of reference numerals:

[0022] 1-sleeve, 2-first sealing ring, 3-adapter, 4-cover, 5-second sealing ring, 6-housing body, 7-clamping module, 81-connecting pin, 82-connecting key, 91-first transmission ring, 92-second transmission ring, 10-lifting screw hole;

[0023] 11-first dynamic ring, 12-first static ring, 13-first elastic member, 14-second dynamic ring, 15-second static ring, 16-second elastic member;

[0024] 21-first cooling water inlet, 22-first cooling water outlet, 23-second cooling water inlet, 24-second cooling water outlet;

[0025] 31-first cooling chamber, 32-second cooling chamber;

[0026] 100- pump shaft, 200- bearing chamber end cover. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to be limiting of the present application. As used in the specification and appended claims of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear contrary indication in the context. It should also be understood that in the embodiments of the present application, "one or more" refers to one, two or more; "and / or" describes the association relationship of associated objects, indicating that three relationships may exist; for example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0029] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0030] The "multiple" involved in the embodiments of the present application means greater than or equal to two. It should be noted that in the description of the embodiments of the present application, the words "first" and "second" are only used for the purpose of distinguishing the description and cannot be understood as indicating or implying relative importance or order.

[0031] The terms "parallel" and "perpendicular" in this application refer to "substantially parallel" and "substantially perpendicular" in actual operation. "Substantially parallel" can be understood as parallel with a certain error, and similarly, "substantially perpendicular" can be understood as perpendicular with a certain error.

[0032] like Figure 1 As shown, the condensate pump sealing device provided in the embodiment of the present application includes a shaft sleeve 1 and a mechanical sealing module. Among them, the sleeve 1 is fixed to the outer periphery of the pump shaft 100 so that the sleeve 1 and the pump shaft 100 rotate synchronously; the mechanical seal module is arranged between the sleeve 1 and the housing of the sealing device, and the condensate pump is sealed by the mechanical seal module to isolate air from entering the condensate pump; at least two groups of cooling water inlets and cooling water outlets are opened on the housing, and the cooling water inlet and cooling water outlet in each group are interconnected to form at least two cooling chambers, and cooling water is passed through the at least two cooling chambers to cool the mechanical seal module, and the at least two cooling chambers are distributed in sequence along the axial direction of the sleeve 1, and an isolation ring is provided between adjacent cooling chambers, and the axis of the isolation ring is consistent with the axis of the sleeve 1, so that the at least two cooling chambers are independent of each other; in this way, since the mechanical seal module is a friction dynamic seal, friction heat is generated during the friction sealing process. Through the formation of at least two independent cooling chambers, each area of the mechanical seal module can be cooled by the cooling water in the independent cooling chamber, so as to improve the cooling effect of the mechanical seal module, thereby improving the sealing effect of the condensate pump sealing device and reducing safety hazards during the operation of the condensate pump.

[0033] like Figure 1 As shown, a first sealing ring 2 is provided between the shaft sleeve 1 and the pump shaft 100 to ensure a sealing effect between the shaft sleeve 1 and the pump shaft 100 .

[0034] like Figure 1 As shown, the shell includes a shell body 6 and an adapter 3, a pressure cover 4 is arranged between the shell body 6 and the adapter 3, and the shell body 6, the pressure cover 4, and the adapter 3 are fixed together by bolts, and the shell body 6, the pressure cover 4 and the adapter 3 are distributed in sequence along the axial direction of the sleeve 1, and the adapter 3 is connected to the bearing chamber end cover 200 through an O-ring, so that the shell body 6, the pressure cover 4, the adapter 3, and the bearing chamber end cover 200 form a rigid whole, so as to form a bearing module of the sealing device, which is used to carry the mechanical sealing module and the cooling chamber, so as to improve the sealing effect of the condensate pump.

[0035] It should be noted that if Figure 1 As shown, a second sealing ring 5 is provided between the pressure cover 4 and the adapter 3 to further improve the sealing effect of the sealing device.

[0036] like Figure 1As shown, the mechanical seal module includes: a first dynamic ring 11, a first dynamic ring 22 fixedly connected to the sleeve 1 so that the first dynamic ring 11 can rotate synchronously with the sleeve 1; a first stationary ring 12, a first stationary ring 12 fixedly connected to the shell body 6 so that the first stationary ring 12 and the shell body 6 remain relatively fixed, and the end face of the first stationary ring 12 fits with the end face of the first dynamic ring 11, so that the end faces of the first stationary ring 12 and the first dynamic ring 11 rub against each other and form liquid film lubrication to achieve dynamic friction sealing.

[0037] The mechanical seal module also includes: a second dynamic ring 14, which is fixedly connected to the sleeve 1 so that the second dynamic ring 14 can rotate synchronously with the sleeve 1; a second stationary ring 15, which is fixedly connected to the adapter 3 so that the second stationary ring 15 and the adapter 3 remain relatively fixed, and the end face of the second stationary ring 15 fits with the end face of the second dynamic ring 14 so that the second stationary ring 15 and the end face of the second dynamic ring 14 rub against each other and form liquid film lubrication to achieve dynamic friction sealing. By cooperating with the two sets of dynamic rings and stationary rings, double-end face sealing can be achieved, further improving the sealing effect.

[0038] like Figure 1 As shown, the sleeve 1 is fixedly connected to the first transmission ring 91 through the connecting pin 81, and the first transmission ring 91 is transmission-connected to the first dynamic ring 11. Specifically, the first end of the first elastic member 13 is connected to the end face of one end of the first dynamic ring 11, and the second end of the first elastic member 13 is connected to the inside of the first transmission ring 91, so that under the action of the first elastic member 13, the end face of the first dynamic ring 11 and the end face of the first static ring 12 remain in a fit state, thereby further improving the sealing effect.

[0039] The sleeve 1 is fixedly connected to the second transmission ring 92 through the connecting key 82, and the second transmission ring 92 is transmission-connected to the second dynamic ring 14. Specifically, the end face of one end of the second dynamic ring 14 is connected to the first end of the second elastic member 16, and the second end of the second elastic member 16 is connected to the inside of the second transmission ring 92. Under the action of the second elastic member 16, the end faces of the second dynamic ring 14 and the second static ring 15 remain in contact with each other, further improving the sealing effect.

[0040] Since the first moving ring 11 and the first stationary ring 12, as well as the second moving ring 14 and the second stationary ring 15 are dynamic friction seals, heat is generated by end face friction during operation. Therefore, the first moving ring 11 and the first stationary ring 12, as well as the second moving ring 14 and the second stationary ring 15 need to be cooled to ensure their sealing effect.

[0041] like Figure 1As shown, a first cooling water inlet 21 and a first cooling water outlet 22 are provided on the shell body 6, and the connecting line of the first cooling water inlet 21 and the first cooling water outlet 22 passes through the axis of the pump shaft 100, so that a first cooling chamber 31 is formed between the first cooling water inlet 21 and the first cooling water outlet 22. Cooling water is passed into the first cooling chamber 31 to cool the friction between the first dynamic ring 11 and the first static ring 12, thereby ensuring the sealing effect.

[0042] A second cooling water inlet 23 and a second cooling water outlet 24 are provided on the adapter 3, and the line connecting the second cooling water inlet 23 and the second cooling water outlet 24 passes through the axis of the pump shaft 100, so that a second cooling chamber 32 is formed between the second cooling water inlet 23 and the second cooling water outlet 24. Cooling water is passed into the second cooling chamber 32 to cool the friction between the second dynamic ring 14 and the second static ring 15, thereby ensuring the sealing effect.

[0043] In this way, the first dynamic ring 11, the first static ring 12, and the second dynamic ring 14, the second static ring 15 are cooled respectively through the mutually independent first cooling chamber 31 and the second cooling chamber 32, so as to reduce the influence on the cooling effect of the dynamic and static rings that contact the cooling water later due to the flow direction of the cooling water, so that each group of dynamic and static rings can be cooled independently, so that the cooling flow rate, cooling temperature, etc. of the cooling water can be adjusted according to actual conditions, so as to improve the sealing state of each group of dynamic and static rings and improve the sealing effect.

[0044] like Figure 2 As shown, there is an angle between the line connecting the first cooling water inlet 21 and the first cooling water outlet 22, and the line connecting the second cooling water inlet 23 and the second cooling water inlet 24, and on the axial projection surface of the pump shaft 100, the line connecting the first cooling water inlet 21 and the first cooling water outlet 22, and the line connecting the second cooling water inlet 23 and the second cooling water inlet 24 are perpendicular to each other. In this way, the cooling water flow directions of the first cooling chamber 31 and the second cooling chamber 32 are different, which can reduce the mutual influence between the cooling chambers and further improve the cooling effect.

[0045] In order to ensure the independent isolation between the first cooling chamber 31 and the second cooling chamber 32, the outer ring of the isolation ring is fixedly connected to the shell body, the inner ring of the isolation ring is rotatably matched with the sleeve 1, and seals are provided between the isolation ring and the shell body 6 and the sleeve 1 to improve the isolation effect between the first cooling chamber 31 and the second cooling chamber 32, further reduce the mutual influence between the cooling chambers, and further improve the cooling effect.

[0046] In actual situations, if Figure 1As shown, a clamping module 7 is also provided on the outer ring of the sleeve 1. The clamping module 7 is used to connect the sleeve 1 and the condensate pump to ensure the axial positioning and coaxiality of the sleeve 1 and the condensate pump, improve the sealing effect, and ensure the stable operation of the sealing device.

[0047] like Figure 2 As shown, a plurality of lifting screw holes 10 are further provided on the end surface of the shell, and the plurality of lifting screw holes 10 are sequentially distributed along the circumference of the end surface of the shell to ensure the safety and precise positioning of the lifting process.

[0048] The condensate pump sealing device provided in the embodiment of the present application realizes double-end face sealing through dynamic sealing between two groups of dynamic and static rings to ensure the sealing effect; and through the independent cooling chambers formed, the friction heat of each group of dynamic and static rings is cooled separately to improve the cooling effect of each group of dynamic and static rings, thereby improving the sealing effect of the dynamic and static rings, thereby improving the sealing effect of the sealing device, and reducing the safety hazards during the operation of the condensate pump.

[0049] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A condensate pump sealing device, characterized in that: include: A shaft sleeve (1), the shaft sleeve (1) being used to be fixedly mounted on the outer periphery of the pump shaft (100) so that the shaft sleeve (1) and the pump shaft (100) rotate synchronously; A mechanical seal module, the mechanical seal module being arranged between the shaft sleeve (1) and the housing, and the mechanical seal module being used to seal the condensate pump; The housing is provided with at least two groups of cooling water inlets and cooling water outlets, the cooling water inlets and the cooling water outlets in each group are interconnected to form at least two cooling chambers, the at least two cooling chambers are used to cool the mechanical seal module, and the at least two cooling chambers are distributed in sequence along the axial direction of the shaft sleeve (1); An isolation ring is provided between adjacent cooling chambers, and the axis of the isolation ring is consistent with the axis of the shaft sleeve (1).

2. The condensate pump sealing device according to claim 1, characterized in that: The housing comprises a housing body (6) and an adapter (3), a pressure cover (4) is provided between the housing body (6) and the adapter (3), the housing body (6), the pressure cover (4) and the adapter (3) are fixedly connected together by bolts, and the housing body (6), the pressure cover (4) and the adapter (3) are distributed in sequence along the axial direction of the shaft sleeve (1).

3. The condensate pump sealing device according to claim 2, characterized in that: The mechanical seal module comprises: a first moving ring (11), the first moving ring (11) being fixedly connected to the shaft sleeve (1); a first stationary ring (12), wherein the first stationary ring (12) is fixedly connected to the housing body (6), and an end surface of the first stationary ring (12) is in contact with an end surface of the first dynamic ring (11); a second moving ring (14), the second moving ring (14) being fixedly connected to the shaft sleeve (1); A second stationary ring (15), wherein the second stationary ring (15) is fixedly connected to the adapter (3), and an end surface of the second stationary ring (15) is in contact with an end surface of the second dynamic ring (14).

4. The condensate pump sealing device according to claim 3, characterized in that: The shaft sleeve (1) is fixedly connected to a first transmission ring (91) via a connecting pin (81), and the first transmission ring (91) is transmission-connected to the first movable ring (11), so that the first movable ring (11) and the shaft sleeve (1) rotate synchronously; The shaft sleeve (1) is fixedly connected to a second transmission ring (92) via a connecting key (82), and the second transmission ring (92) is transmission-connected to the second movable ring (14), so that the second movable ring (14) and the shaft sleeve (1) rotate synchronously.

5. The condensate pump sealing device according to claim 4, characterized in that: The end surface of one end of the first dynamic ring (11) is connected to the first end of the first elastic member (13), and the second end of the first elastic member (13) is connected to the inside of the first transmission ring (91). Under the action of the first elastic member (13), the end surface of the first dynamic ring (11) and the end surface of the first static ring (12) are kept in a contact state. The end face of one end of the second dynamic ring (14) is connected to the first end of the second elastic member (16), and the second end of the second elastic member (16) is connected to the inside of the second transmission ring (92). Under the action of the second elastic member (16), the end face of the second dynamic ring (14) and the end face of the second static ring (15) are kept in a fitted state.

6. The condensate pump sealing device according to claim 2, characterized in that: The housing body (6) is provided with a first cooling water inlet (21) and a first cooling water outlet (22), and a line connecting the first cooling water inlet (21) and the first cooling water outlet (22) passes through the axis of the pump shaft (100); The adapter (3) is provided with a second cooling water inlet (23) and a second cooling water outlet (24), and a line connecting the second cooling water inlet (23) and the second cooling water outlet (24) passes through the axis of the pump shaft (100); There is an included angle between a line connecting the first cooling water inlet (21) and the first cooling water outlet (22) and a line connecting the second cooling water inlet (23) and the second cooling water outlet (24).

7. The condensate pump sealing device according to claim 6, characterized in that: On the projection plane along the axial direction of the pump shaft (100), a line connecting the first cooling water inlet (21) and the first cooling water outlet (22) and a line connecting the second cooling water inlet (23) and the second cooling water outlet (24) are perpendicular to each other.

8. The condensate pump sealing device according to claim 6, characterized in that: A first cooling chamber (31) is formed between the first cooling water inlet (21) and the first cooling water outlet (22); A second cooling chamber (32) is formed between the second cooling water inlet (23) and the second cooling water outlet (24); The first cooling chamber (31) and the second cooling chamber (32) are isolated from each other by an isolation ring, the outer ring of the isolation ring is fixedly connected to the housing body (6), and the inner ring of the isolation ring is rotatably engaged with the shaft sleeve (1); Seals are provided between the isolation ring, the housing body (6), and the shaft sleeve (1).

9. The condensate pump sealing device according to claim 2, characterized in that: A first sealing ring (2) is provided between the shaft sleeve (1) and the pump shaft (100); And / or, a second sealing ring (5) is provided between the gland (4) and the adapter (3).

10. The condensate pump sealing device according to any one of claims 1 to 9, characterized in that: The outer ring of the shaft sleeve (1) is further provided with a clamping module (7); The end surface of the shell is further provided with a plurality of lifting screw holes (10), and the plurality of lifting screw holes (10) are distributed in sequence along the circumference of the end surface of the shell.

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