Heat dissipation and lubrication structure

Abstract

The utility model discloses a heat dissipation and lubrication structure which comprises a liquid inlet pipe penetrating from the exterior of a mechanical seal shell to the interior of the mechanical seal shell, the end, located in the mechanical seal shell, of the liquid inlet pipe is connected with one end of a heat dissipation pipe, and the end, located outside the mechanical seal shell, of the liquid inlet pipe is connected with a liquid outlet of a water pump; the heat dissipation pipe is coiled in the mechanical sealing shell, and cooling liquid is contained in the heat dissipation pipe; a liquid inlet of the water pump is connected with a liquid outlet of the heat exchanger; and the liquid outlet pipe penetrates from the interior of the mechanical sealing shell to the exterior of the mechanical sealing shell, the end, located in the mechanical sealing shell, of the liquid outlet pipe is connected with the other end of the heat dissipation pipe, and the end, located outside the mechanical sealing shell, of the liquid outlet pipe is connected with a liquid inlet of the heat exchanger. According to the utility model, the condition of sealing failure caused by melting of the movable ring sealing ring due to temperature rise can be avoided, the friction between the movable ring and the static ring can be effectively reduced, and the normal operation of the pump is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat dissipation and lubrication of pumps, and specifically relates to a heat dissipation and lubrication structure. Background Art

[0002] A pump is a machine that transports fluid or pressurizes fluid. It is mainly used to transport liquids such as water, lubricating oil, acid and alkali liquids, emulsions, suspensions and liquid metals. It can also transport liquid-gas mixtures and liquids containing suspended solids. A pump is a machine that pressurizes the transported liquid through the high-speed rotation of the impeller. While the impeller rotates at high speed, the mechanical seal connected to the pump shaft also rotates at high speed. When the pump is working normally, the liquid in the impeller will directly contact the mechanical seal, thereby cooling the mechanical seal. However, when there is gas in the pump or the liquid is cut off, the mechanical seal cannot contact the liquid, but it still works. Then the temperature of the mechanical seal rises linearly. At high temperature, the O-ring will be deformed first, and then melt and burn off. At the same time, the static ring and the dynamic ring will suffer from severe dry grinding and wear, and the static ring and the dynamic ring will lose their sealing function.

[0003] At present, when the pump is running with gas or without liquid, the impeller will produce "idle operation", commonly known as "dry grinding". At this time, the temperature inside the mechanical seal will rise rapidly, and the rubber parts will melt in a short time, resulting in seal failure, which can easily cause equipment damage. In serious cases, there is a risk of equipment explosion. In order to reduce the friction heat generated by dry grinding, the staff will disassemble the mechanical seal and manually apply lubricating oil to the inside of the dynamic ring before using the pump. This method is not only time-consuming and labor-intensive, but also troublesome. Utility Model Content

[0004] In order to solve the above problems, the present application provides a heat dissipation and lubrication structure, including:

[0005] A heat dissipation pipe is coiled in the mechanical seal housing and has a coolant inside;

[0006] A liquid inlet pipe, which runs from the outside of the mechanical seal housing to the inside of the mechanical seal housing, wherein the end of the liquid inlet pipe located inside the mechanical seal housing is connected to one end of the heat dissipation pipe, and the end of the liquid inlet pipe located outside the mechanical seal housing is connected to the liquid outlet of the water pump;

[0007] The liquid outlet pipe runs from the inside of the mechanical seal housing to the outside of the mechanical seal housing, and its end located inside the mechanical seal housing is connected to the other end of the heat dissipation pipe, and its end located outside the mechanical seal housing is connected to the liquid inlet of the heat exchanger.

[0008] A water pump, the liquid inlet of which is connected to the liquid outlet of the heat exchanger;

[0009] Heat exchanger.

[0010] Optionally, the water pump and the heat exchanger are both fixedly connected to the outer surface of the pump casing.

[0011] Optionally, also include:

[0012] The fixed tube penetrates into the mechanical seal housing, and its tube end extends to the upper part between the dynamic ring and the static ring. The fixed tube is provided with an internal thread, and the tube body of the rubber-tipped dropper is provided with an external thread. The rubber-tipped dropper is installed on the upper end of the fixed tube through a threaded connection.

[0013] Optionally, a sealing sleeve is sleeved over the external thread of the tube body.

[0014] Optionally, the end of the tube body is in a form with a gradually decreasing diameter.

[0015] Optionally, the rubber-tipped dropper is a double-headed rubber-tipped dropper, including a tube body connected to two ends of a rubber cap in back to back relation, a filter screen is arranged inside the rubber cap, the outer periphery of the filter screen is fixedly connected to the inner wall of the rubber cap, and when the tube body at one end is used to absorb or release lubricating oil, a rubber sleeve is provided on the end of the tube body at the other end.

[0016] The heat dissipation and lubrication structure of the utility model can dissipate the heat generated in the mechanical seal when the pump is idling through its heat dissipation mechanism, so as to avoid the situation where the temperature rises and the dynamic ring seal melts and causes the seal to fail, which can not only ensure the normal operation of the pump, but also extend the service life of the mechanical seal. Through the lubrication mechanism, lubricating oil can be dripped between the dynamic ring and the static ring, thereby effectively reducing friction heat and avoiding damage to the mechanical seal and affecting its sealing performance. It can not only save the trouble of manually disassembling the mechanical seal, save time and effort, but also further ensure the normal operation of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By describing the embodiments thereof in conjunction with the following drawings, the above-mentioned features and technical advantages of the present utility model will become clearer and easier to understand.

[0018] Figure 1 It is a three-dimensional schematic diagram of the heat dissipation and lubrication structure of an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the impeller.

[0020] Figure 3 This is a cross-sectional view of the heat dissipation and lubrication structure of an embodiment of the utility model;

[0021] Figure 4 It is a three-dimensional schematic diagram of the heat dissipation mechanism of an embodiment of the utility model;

[0022] Figure 5 This is an exploded view of a mechanical seal;

[0023] Figure 6 An exploded view of the lubrication mechanism of an embodiment of the utility model;

[0024] Figure 7 It is a schematic diagram of a double-headed rubber dropper according to an embodiment of the utility model.

[0025] Description of Reference Numerals

[0026] 1. Pump shaft; 2. Pump casing; 3. Impeller; 4. Mechanical seal; 401. Casing; 402. Stationary ring; 403. Stationary ring seal; 404. Moving ring; 405. Moving ring seal; 5. Heat dissipation mechanism; 501. Water pump; 502. Liquid inlet pipe; 503. Heat dissipation pipe; 504. Liquid outlet pipe; 505. Heat exchanger; 506. Liquid extraction pipe; 6. Lubrication mechanism; 601. Fixed pipe; 602. Rubber-tipped dropper; 603. Sealing sleeve; 604. Through hole; 6021. Rubber cap; 6022. Tube body; 6023. Filter. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will be described below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that the described embodiments may be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims. In addition, in this specification, the drawings are not drawn to scale and the same reference numerals represent the same parts.

[0028] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be detachably connected or non-detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Among them, "fixed connection" means that the relative position relationship after connection remains unchanged. "Rotational connection" means that the two parts are connected to each other and can rotate relative to each other after connection. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", etc., are only reference directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, 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 on the embodiments of the present application. Among them, the two components are obtained by an integrated molding process. The integrated structure means that in the process of forming one of the two components, the component is connected to the other component, and there is no need to connect the two components together by reprocessing (such as bonding, welding, snap connection, screw connection).

[0029] The embodiment of the utility model provides a heat dissipation and lubrication structure. Through the heat dissipation mechanism, the heat generated in the mechanical seal when the pump is idling can be dissipated to avoid the situation where the temperature in the mechanical seal rises rapidly and causes the ring seal to melt. It can not only ensure the normal operation of the pump, but also extend the service life of the mechanical seal. Through the lubrication mechanism, lubricating oil can be dripped between the dynamic ring and the static ring, thereby effectively reducing friction heat and avoiding damage to the mechanical seal and affecting its sealing performance. It can not only save the trouble of manually disassembling the mechanical seal, save time and effort, but also further ensure the normal operation of the pump.

[0030] See also Figures 1 to 6 A pump casing 2 is arranged on the outer periphery of the pump shaft 1 of the pump, an impeller 3 is fixedly connected to the outer surface of the pump shaft 1, and a mechanical seal 4 is arranged between the pump shaft 1 and the pump casing 2. A heat dissipation and lubrication structure provided in an embodiment of the utility model is a structure for preventing dry grinding between the dynamic ring and the static ring in the mechanical seal. It includes a heat dissipation mechanism, which transfers the heat generated in the mechanical seal through heat exchange, thereby reducing the heat in the mechanical seal; a lubrication mechanism, which absorbs lubricating oil through a threaded rubber head dropper, and drips lubricating oil between the dynamic ring and the static ring by squeezing the rubber head, thereby reducing the friction between the dynamic ring and the static ring.

[0031] Please refer to Figure 3 The mechanical seal 4 also includes a stationary ring 402, a stationary ring sealing ring 403 is arranged between the housing 401 and the stationary ring 402, a dynamic ring 404 is fixed to the outer surface of the pump shaft 1, a dynamic ring sealing ring 405 is arranged between the dynamic ring 404 and the pump shaft 1, and the stationary ring 402 is in contact with the dynamic ring 404.

[0032] The heat dissipation mechanism 5 includes a liquid inlet pipe 502, which runs from the outside of the mechanical seal housing 401 to the inside of the mechanical seal housing 401 and is used to connect the heat dissipation copper tube and the water pump; a heat dissipation pipe 503, which is coiled around the outer periphery of the dynamic ring and the static ring in the mechanical seal housing 401 at a certain interval, and is used to allow the coolant to swirl and flow in the mechanical seal housing 401; a water pump 501, which is connected to the liquid inlet pipe 502 and is used to pump coolant into the heat dissipation copper tube through the liquid inlet pipe 502; a liquid outlet pipe 504, which runs from the inside of the mechanical seal housing 401 to the outside of the mechanical seal housing 401 and is used to connect the heat dissipation copper tube and the heat exchanger 505.

[0033] The liquid outlet of the water pump 501 is connected to one end of the liquid inlet pipe 502, and the other end of the liquid inlet pipe 502 penetrates into the mechanical seal housing 401 and communicates with one end of the heat dissipation copper tube 503. The liquid inlet of the water pump 501 is communicated with the liquid outlet of the radiator 505 through the liquid extraction pipe 506. The outer surfaces of the water pump 501 and the heat exchanger 505 can be fixed to the outer surface of the pump housing 2.

[0034] The heat dissipation pipe 503 may be a copper pipe, which is coiled in the mechanical seal housing 401 and has a certain distance from the dynamic ring and the static ring in the mechanical seal to prevent the mechanical seal from colliding with the heat dissipation copper pipe 503 during movement.

[0035] A large amount of heat will be generated in the mechanical seal 4. Due to the thermal conductivity of the heat dissipation copper tube 503 in the heat dissipation mechanism 5, the heat inside the mechanical seal housing 401 can be absorbed, and then the heat can be output to the heat exchanger 505 through the evaporation conversion of the coolant in the heat dissipation copper tube 503. The heat exchanger 505 can cool the coolant from hot to cold. Then the water pump 501 is started, and the coolant can be extracted through the liquid extraction pipe 506 and then transported to the heat dissipation copper tube 503. Such a circulation flow can quickly take away the heat inside the housing 401, avoid the temperature rise in the housing 401, and cause the dynamic ring seal 405 to melt and cause the seal to fail. It can not only ensure the normal operation of the pump, but also extend the service life of the mechanical seal 4. The coolant can be water.

[0036] Please refer to Figure 4 and Figure 5 The lubrication mechanism 6 includes a fixed tube 601, which penetrates into the mechanical seal housing 401, and its tube end extends between the dynamic ring and the static ring. The fixed tube 601 has an internal thread, and the tube body of the rubber head dropper 602 has an external thread. The rubber head dropper is installed on the upper end of the fixed tube 601 through a threaded connection, so that the liquid outlet of the rubber head dropper is located between the dynamic ring and the static ring.

[0037] Before the pump is operated, the rubber-tipped dropper 602 is twisted to remove the rubber-tipped dropper 602 from the fixed tube 601, and then the lubricating oil is sucked and then threadedly connected to the fixed tube 601, which can ensure the sealing of the pump during operation. When the pump is dry-grinded, the rubber-tipped dropper 602 is pinched to drip the lubricating oil in the rubber-tipped dropper 602 from the fixed tube 601 into between the moving ring 404 and the stationary ring 402, so that an oil film is formed on the contact surface of the moving ring 404 and the stationary ring 402, thereby effectively reducing frictional heat and avoiding the frictional heat generated by dry grinding between the moving ring 404 and the stationary ring 402, which may damage the pump. This not only saves the trouble of manually disassembling the mechanical seal 4, but also saves time and effort.

[0038] Furthermore, a sealing sleeve 603 is sleeved on the outer surface of the rubber-tipped dropper 602. Specifically, the sealing sleeve 603 is sleeved on the outer thread of the rubber-tipped dropper body. When the rubber-tipped dropper 602 is screwed together with the fixed tube 601 through the thread, the sealing sleeve 603 is squeezed and sealed with the fixed tube 601.

[0039] When the utility model is in use: when the pump is running in the presence of gas or when the liquid is cut off, a large amount of heat will be generated in the mechanical seal 4. Due to the thermal conductivity of the heat dissipation copper tube 503 in the heat dissipation mechanism 5, the heat inside the shell 401 can be absorbed, and then the heat can be output to the heat exchanger 505 through the evaporation conversion of the coolant in the heat dissipation copper tube 503. The heat exchanger 505 can cool the coolant from hot to cold. Subsequently, the water pump 501 is started, and the coolant can be extracted through the liquid extraction pipe 506 and then transported to the heat dissipation copper tube 503. Such a circulation flow can quickly take away the heat inside the shell 401 and avoid the temperature rise in the shell 401. , causing the dynamic ring sealing ring 405 to melt and cause the seal failure, which can not only ensure the normal operation of the pump, but also extend the service life of the mechanical seal 4; when the pump is dry-ground, pinching the rubber head dropper 602 can drip the lubricating oil in the rubber head dropper 602 from the fixed tube 601 into between the dynamic ring 404 and the static ring 402, so that an oil film is formed on the contact surface of the dynamic ring 404 and the static ring 402, thereby effectively reducing frictional heat and avoiding damage to the mechanical seal 4 and affecting its sealing performance. It can not only save the trouble of manually disassembling the mechanical seal 4, save time and effort, but also further ensure the normal operation of the pump.

[0040] In addition, the rubber-tipped dropper may be a double-headed rubber-tipped dropper, including a tube body 6022 connected to both ends of a rubber cap 6021 in reverse, and the lubricating oil can be sucked into the rubber cap 6021 through the two tube bodies 6022. The difference is that a filter screen 6023 is provided in the rubber cap, and the periphery of the filter screen 6023 is fixedly connected to the inner wall of the rubber cap 6021, for example, they can be bonded together. And preferably, the filter screen is arranged at a position close to one tube body 6022. For example, 5 mm away from one tube body. When sucking the lubricating oil, although impurities can enter the rubber cap with the lubricating oil, the filter screen can block the impurities on the lower side of the filter screen. And the double-headed rubber-tipped dropper is reversed, and the tube body at the other end is connected to the fixed pipe 601, so that the impurities are blocked on the upper side of the filter screen. The mechanical seal can be lubricated with confidence. When the tube body at one end is used to absorb or release the lubricating oil, the end of the tube body at the other end can be sealed with a rubber sleeve (not shown).

[0041] By adopting the double-rubber-tipped dropper, discarded lubricating oil and lubricating oil that is not stored in good conditions can be safely used, and impurities can be effectively blocked. Moreover, after using it for a period of time, the tube body can be removed to clean out the impurities.

[0042] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat dissipation and lubrication structure, characterized in that: include: A heat dissipation pipe is coiled in the mechanical seal housing and has a coolant inside; A liquid inlet pipe, which runs from the outside of the mechanical seal housing to the inside of the mechanical seal housing, wherein the end of the liquid inlet pipe located inside the mechanical seal housing is connected to one end of the heat dissipation pipe, and the end of the liquid inlet pipe located outside the mechanical seal housing is connected to the liquid outlet of the water pump; The liquid outlet pipe runs from the inside of the mechanical seal housing to the outside of the mechanical seal housing, and its end located inside the mechanical seal housing is connected to the other end of the heat dissipation pipe, and its end located outside the mechanical seal housing is connected to the liquid inlet of the heat exchanger. A water pump, the liquid inlet of which is connected to the liquid outlet of the heat exchanger; Heat exchanger.

2. A heat dissipation and lubrication structure according to claim 1, characterized in that: The water pump and the heat exchanger are both fixedly connected to the outer surface of the pump casing.

3. A heat dissipation and lubrication structure according to claim 1, characterized in that: Also includes: The fixed tube penetrates into the mechanical seal housing, and its tube end extends to the upper part between the dynamic ring and the static ring. The fixed tube is provided with an internal thread, and the tube body of the rubber-tipped dropper is provided with an external thread. The rubber-tipped dropper is installed on the upper end of the fixed tube through a threaded connection.

4. A heat dissipation and lubrication structure according to claim 3, characterized in that: A sealing sleeve is sleeved above the external thread of the tube body.

5. A heat dissipation and lubrication structure according to claim 3, characterized in that: The end of the tube body is in a form of gradually decreasing diameter.

6. A heat dissipation and lubrication structure according to claim 3, characterized in that: The rubber-tipped dropper is a double-headed rubber-tipped dropper, including a tube body connected at two ends of a rubber cap in back to back relation, a filter screen is arranged inside the rubber cap, the outer periphery of the filter screen is fixedly connected to the inner wall of the rubber cap, and when the tube body at one end is used to absorb or release lubricating oil, a rubber sleeve is provided on the end of the tube body at the other end.

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