Internal and external multilayer sealing cooling hot water circulating pump

Abstract

The utility model discloses an internal and external multilayer sealing cooling hot water circulating pump, which relates to the technical field of cooling hot water circulating pumps, comprises a cooling hot water circulating pump body, and is characterized in that a limiting seat is mounted on the inner wall surface of the cooling hot water circulating pump body, and a threaded connection groove is formed in the front wall surface of the cooling hot water circulating pump body; an inner sealing structure is installed on the front wall face of the limiting base, the front wall face of the inner sealing structure is connected with an outer sealing structure, and the outer wall face of the outer sealing structure is sleeved with an alarm structure; the outer sealing structure and the inner sealing structure are combined to form multi-layer sealing, the sealing quality guarantee period is prolonged, the contact degree between a part and a sealing gasket is adjusted through threaded connection, disassembly and maintenance are convenient, and the problem that an existing cooling hot water circulating pump is only provided with a single-layer sealing structure at a connector, and the sealing quality guarantee period is prolonged is solved. And in the cold and hot water circulation process, a single-layer sealing structure is short in service life, needs to be frequently replaced by operators and is not suitable for long-term engineering.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling and hot water circulation pumps, in particular to an internal and external multi-layer sealed cooling and hot water circulation pump. Background Art

[0002] A cooling and hot water circulation pump is a mechanical device primarily used to provide stable pressure and flow rate for circulating heat carriers. It offers comfort, safety, stability, and water, electricity, and energy conservation, making it a must-have for modern homes. The cooling and hot water circulation pump operates by circulating hot water through the system, ensuring the system temperature remains within a set value. When the system temperature falls below the set value, the hot water circulation pump automatically activates and circulates to ensure the water temperature remains within the user-defined range.

[0003] The existing cooling and hot water circulation pump has only a single-layer sealing structure at the interface. The service life of the single-layer sealing structure is short during the circulation of hot and cold water, and the operator needs to replace it frequently. It is not suitable for long-term projects. The existing cooling and hot water circulation pump has no alarm device. Since the external interface sealing sleeve needs to be replaced frequently, long-term use will increase the connection gap, resulting in poor sealing. When there is a leak, the operator cannot detect it in time. Utility Model Content

[0004] The technical problem to be solved by the present invention is that the existing cooling and hot water circulation pump has only a single-layer sealing structure at the interface. The service life of the single-layer sealing structure is short during the circulation of hot and cold water, and the operator needs to replace it frequently. It is not suitable for long-term projects. The existing cooling and hot water circulation pump has no alarm device. Since the external interface sealing sleeve needs to be replaced frequently, long-term use will increase the connection gap, resulting in poor sealing. When there is a water leak, the operator cannot discover it in time.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an inner and outer multi-layer sealed cooling and hot water circulation pump, including a cooling and hot water circulation pump body, characterized in that a limit seat is installed on the inner wall surface of the cooling and hot water circulation pump body, a threaded connection groove is opened on the front wall surface of the cooling and hot water circulation pump body, an inner sealing structure is installed on the front wall surface of the limit seat, the front wall surface of the inner sealing structure is connected to the outer sealing structure, and the outer wall surface of the outer sealing structure is sleeved with an alarm structure; the inner sealing structure includes: an inner sealing limit gasket, an interface connection sleeve, an inner sealing guide sleeve, a guide gasket and a sealing ring; the inner sealing limit gasket is installed on the front wall surface of the limit seat, the interface connection sleeve is installed on the front wall surface of the inner sealing limit gasket, the inner sealing guide sleeve is installed on the rear wall surface of the inner sealing limit gasket and is connected to the threaded connection groove, the guide gasket is installed in the threaded connection groove and is connected to the inner sealing guide sleeve, and the sealing ring is sleeved on the outer wall surface of the interface connection sleeve.

[0006] As a further solution of the present invention: the external sealing structure includes: a threaded connection sleeve, two external sealing gaskets, an external interface sealing sleeve, an external sealing limit ring and an external sealing limit sealing gasket; a threaded guide groove is provided on the front wall surface of the interface connection sleeve, the threaded connection sleeve is installed in the threaded guide groove provided on the front wall surface of the interface connection sleeve, the two external sealing gaskets are respectively installed on the two end surfaces of the threaded connection sleeve, the external interface sealing sleeve is sleeved on the outer wall surface of the threaded connection sleeve, and is threadedly connected to the threaded connection sleeve, the external sealing limit ring is sleeved on the outer wall surface of the external interface sealing sleeve, and the external sealing limit sealing gasket is connected to the rear wall surface of the external sealing limit ring.

[0007] As a further solution of the present utility model: the alarm structure includes: an alarm threaded sleeve, a spring sealing gasket, an alarm sealing sleeve, a drainage tube, a collecting tube and a liquid level sensor; the alarm threaded sleeve is sleeved on the outer wall surface of the interface connecting sleeve, the spring sealing gasket is connected to the rear wall surface of the alarm threaded sleeve, the alarm sealing sleeve is sleeved on the outer wall surface of the alarm threaded sleeve, and is connected to the outer sealing limit sealing gasket and the spring sealing gasket through a threaded connection, the drainage tube is connected to the lower wall surface of the alarm sealing sleeve, the collecting tube is connected to the lower wall surface of the drainage tube, and the liquid level sensor is installed on the inner wall surface of the collecting tube.

[0008] As a further solution of the present invention: the inner sealing guide sleeve and the threaded connection groove are connected by threads.

[0009] As a further solution of the present invention: the alarm threaded sleeve and the alarm sealing sleeve are connected by threads.

[0010] As a further solution of the present invention: an exhaust hole is provided on the upper wall of the collecting cylinder.

[0011] As a further solution of the present invention: a guide groove is formed between the alarm sealing sleeve and the outer sealing limit ring.

[0012] The utility model adopts the above technical solution and has the following advantages compared with the prior art:

[0013] Through the combination of the outer sealing structure and the inner sealing structure, a multi-layer seal is formed to extend the shelf life of the seal. The contact degree between the parts and the sealing gasket is adjusted through the threaded connection, which facilitates disassembly and maintenance. This solves the problem that the existing cooling and hot water circulation pump has only a single-layer sealing structure at the interface. During the hot and cold water circulation process, the single-layer sealing structure has a short service life and requires frequent replacement by operators, making it unsuitable for long-term projects.

[0014] When the water droplets gather into streams, they will flow into the collection tube along the drainage pipe and be collected. At the same time, the internal and external pressures are balanced through the exhaust holes opened on the wall of the collection tube. When the water in the collection tube accumulates to the height of the liquid level sensor, an alarm is triggered to remind the operator to carry out maintenance. This solves the problem that the existing cooling hot water circulation pump has no alarm device, and the external interface sealing sleeve needs to be replaced frequently. Long-term use will increase the connection gap, resulting in poor sealing, and the operator cannot detect the leakage in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an internal and external multi-layer sealed cooling and hot water circulation pump in an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the inner sealing structure of an inner and outer multi-layer sealed cooling and hot water circulation pump in an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of the outer seal structure of an inner and outer multi-layer sealed cooling and hot water circulation pump in an embodiment of the present utility model;

[0018] Figure 4 This is a schematic diagram of an alarm structure of an internal and external multi-layer sealed cooling and hot water circulation pump in an embodiment of the present utility model;

[0019] Figure 5 This is a schematic cross-sectional view of a multi-layer sealed cooling and hot water circulation pump in an embodiment of the present invention.

[0020] In the figure: 1. Cooling and hot water circulation pump body; 2. Limit seat; 3. Threaded connection groove; 4. Inner sealing limit gasket; 5. Interface connection sleeve; 6. Inner sealing guide sleeve; 7. Guide sealing gasket; 8. Sealing ring; 9. Threaded connection sleeve; 10. Outer sealing gasket; 11. Outer interface sealing sleeve; 12. Outer sealing limit ring; 13. Outer sealing limit gasket; 14. Alarm threaded sleeve; 15. Spring gasket; 16. Alarm sealing sleeve; 17. Drainage tube; 18. Collection tube; 19. Liquid level sensor; 20. Diversion groove. DETAILED DESCRIPTION

[0021] The following further describes specific embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the descriptions of these embodiments are intended to aid understanding of the present invention and do not constitute limitations on the present invention. Furthermore, the technical features involved in the various embodiments of the present invention described below may be combined with one another as long as they do not conflict with one another.

[0022] See also Figure 1-Figure 5, a multi-layer sealed cooling and hot water circulation pump with internal and external seals, comprising a cooling and hot water circulation pump body 1, a limiting seat 2 is installed on the inner wall surface of the cooling and hot water circulation pump body 1, a threaded connection groove 3 is opened on the front wall surface of the cooling and hot water circulation pump body 1, an inner sealing structure is installed on the front wall surface of the limiting seat 2, the front wall surface of the inner sealing structure is connected with an outer sealing structure, and the outer wall surface of the outer sealing structure is sleeved with an alarm structure; the inner sealing structure comprises: an inner sealing limiting gasket 4, an interface connection sleeve 5, an inner sealing guide sleeve 6, a guide sealing gasket 7 and a sealing ring 8; the inner sealing limiting gasket 4 is installed on the front wall surface of the limiting seat 2, the interface connection sleeve 5 is installed on the front wall surface of the inner sealing limiting gasket 4, the inner sealing guide sleeve 6 is installed on the rear wall surface of the inner sealing limiting gasket 4, and is connected to the threaded connection groove 3, the guide sealing gasket 7 is installed in the threaded connection groove 3 and connected to the inner sealing guide sleeve 6, and the sealing ring 8 is sleeved on the outer wall surface of the interface connection sleeve 5.

[0023] See also Figure 2 The external sealing structure includes: a threaded connection sleeve 9, two external sealing gaskets 10, an external interface sealing sleeve 11, an external sealing limit ring 12 and an external sealing limit sealing gasket 13; a threaded guide groove is provided on the front wall surface of the interface connection sleeve 5, and the threaded connection sleeve 9 is installed in the threaded guide groove provided on the front wall surface of the interface connection sleeve 5. The two external sealing gaskets 10 are respectively installed on the two end surfaces of the threaded connection sleeve 9, the external interface sealing sleeve 11 is sleeved on the outer wall surface of the threaded connection sleeve 9, and is threadedly connected to the threaded connection sleeve 9, the external sealing limit ring 12 is sleeved on the outer wall surface of the external interface sealing sleeve 11, and the external sealing limit sealing gasket 13 is connected to the rear wall surface of the external sealing limit ring 12.

[0024] See also Figure 3 The alarm structure includes: an alarm threaded sleeve 14, a spring sealing gasket 15, an alarm sealing sleeve 16, a drainage tube 17, a collecting tube 18 and a liquid level sensor 19; the alarm threaded sleeve 14 is sleeved on the outer wall of the interface connecting sleeve 5, the spring sealing gasket 15 is connected to the rear wall of the alarm threaded sleeve 14, the alarm sealing sleeve 16 is sleeved on the outer wall of the alarm threaded sleeve 14, and is connected to the outer sealing limit sealing gasket 13 and the spring sealing gasket 15 through a threaded connection, the drainage tube 17 is connected to the lower wall of the alarm sealing sleeve 16, the collecting tube 18 is connected to the lower wall of the drainage tube 17, and the liquid level sensor 19 is installed on the inner wall of the collecting tube 18.

[0025] See also Figure 2 The inner sealing guide sleeve 6 and the threaded connection groove 3 are threadedly connected. When in use, the threaded connection can adjust the contact degree between the inner sealing guide sleeve 6 and the guide sealing gasket 7.

[0026] See also Figure 4The alarm threaded sleeve 14 and the alarm sealing sleeve 16 are connected by a thread. When in use, the threaded connection can adjust the contact degree between the alarm sealing sleeve 16 and the outer sealing limit seal 13 and the spring seal 15.

[0027] See also Figure 5 The upper wall of the collecting tube 18 is provided with an exhaust hole. When in use, the internal and external pressures are balanced through the exhaust hole opened on the upper wall of the collecting tube 18.

[0028] See also Figure 5 A guide groove 20 is formed between the alarm sealing sleeve 16 and the outer sealing limit ring 12. When in use, water droplets flow into the guide groove 20 and gather. At this time, the outer sealing limit sealing gasket 13 and the spring sealing gasket 15 serve as the second line of defense. When the water droplets gather into strands, they will flow along the drainage tube 17 into the collection tube 18 for collection.

[0029] Example 1: In this embodiment, a multi-layer seal is formed by combining an outer sealing structure and an inner sealing structure to extend the shelf life of the seal. The contact degree between the parts and the sealing gasket is adjusted by threaded connection to facilitate disassembly and maintenance.

[0030] Specifically, when the water flows out along the limit seat 2, the inner sealing limit gasket 4 first acts as the first line of defense to prevent the water from flowing out along the gap between the cooling and hot water circulation pump body 1 and the interface connection sleeve 5. The sealing ring 8 is stuck in the gap between the cooling and hot water circulation pump body 1 and the interface connection sleeve 5. When the inner sealing limit gasket 4 fails, the sealing ring 8 acts as the second line of defense. When the sealing ring 8 fails, the water flows along the gap between the cooling and hot water circulation pump body 1 and the interface connection sleeve 5 into the threaded connection groove 3. At this time, the guide sealing gasket 7 acts as the last line of defense to prevent the water from overflowing. The three-line defense multi-layer sealing prevents the water from flowing out along the gap between the cooling and hot water circulation pump body 1 and the interface connection sleeve 5. This is the inner seal.

[0031] Example 2. In this embodiment, when water droplets gather into streams, they will flow along the drainage pipe 17 into the collection tube 18 for collection. At the same time, the internal and external pressures are balanced through the exhaust holes opened on the upper wall of the collection tube 18. When the water in the collection tube 18 accumulates to the height of the liquid level sensor 19, an alarm is triggered to remind the operator to perform maintenance.

[0032] Specifically, when the diameter of the external pipe is large, an external interface sealing sleeve 11 is required to assist in the connection. When the water flows along the interface connection sleeve 5 into the external interface sealing sleeve 11, the two external sealing gaskets 10 first serve as the first line of defense to prevent the water from flowing out along the gap between the interface connection sleeve 5 and the external interface sealing sleeve 11. When the two external sealing gaskets 10 fail, the water droplets flow into the guide groove 20 and gather. At this time, the external sealing limit gasket 13 and the spring gasket 15 serve as the second line of defense. When the water droplets gather into strands, they will flow along the drainage pipe 17 into the collection tube 18 for collection. At the same time, the internal and external pressures are balanced through the exhaust holes opened on the upper wall of the collection tube 18. When the water in the collection tube 18 accumulates to the height of the liquid level sensor 19, an alarm is triggered to remind the operator to perform maintenance. Whenever the operator replaces the external interface sealing sleeve 11, the internal condition of the collection tube 18 should be checked to determine the sealing inside the guide groove 20.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It is clear to those skilled in the art that various changes, modifications, substitutions, and variations to these embodiments may be made without departing from the principles and spirit of the present invention, and these changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A multi-layer sealed cooling and hot water circulation pump, comprising a cooling and hot water circulation pump body (1), characterized in that: The inner wall surface of the cooling and hot water circulation pump body (1) is provided with a limit seat (2), the front wall surface of the cooling and hot water circulation pump body (1) is provided with a threaded connection groove (3), the front wall surface of the limit seat (2) is provided with an inner sealing structure, the front wall surface of the inner sealing structure is connected to an outer sealing structure, and the outer wall surface of the outer sealing structure is provided with an alarm structure; The inner sealing structure comprises: an inner sealing limit sealing pad (4), an interface connection sleeve (5), an inner sealing guide sleeve (6), a guide sealing pad (7) and a sealing ring (8); The inner sealing limit seal (4) is installed on the front wall of the limit seat (2), the interface connection sleeve (5) is installed on the front wall of the inner sealing limit seal (4), the inner sealing guide sleeve (6) is installed on the rear wall of the inner sealing limit seal (4) and is connected to the threaded connection groove (3), the guide seal (7) is installed in the threaded connection groove (3) and is connected to the inner sealing guide sleeve (6), and the sealing ring (8) is sleeved on the outer wall of the interface connection sleeve (5).

2. The inner and outer multi-layer sealed cooling and hot water circulation pump according to claim 1, characterized in that: The external sealing structure comprises: a threaded connection sleeve (9), two external sealing pads (10), an external interface sealing sleeve (11), an external sealing limiting ring (12), and an external sealing limiting sealing pad (13); The front wall of the interface connection sleeve (5) is provided with a thread guide groove, the thread connection sleeve (9) is installed in the thread guide groove provided on the front wall of the interface connection sleeve (5), the two outer sealing pads (10) are respectively installed on the two end surfaces of the thread connection sleeve (9), the outer interface sealing sleeve (11) is sleeved on the outer wall of the thread connection sleeve (9) and is connected to the thread connection sleeve (9) by a thread, the outer sealing limit ring (12) is sleeved on the outer wall of the outer interface sealing sleeve (11), and the outer sealing limit sealing pad (13) is connected to the rear wall of the outer sealing limit ring (12).

3. The inner and outer multi-layer sealed cooling and hot water circulation pump according to claim 2, characterized in that: The alarm structure comprises: an alarm threaded sleeve (14), a spring sealing gasket (15), an alarm sealing sleeve (16), a drainage tube (17), a collecting tube (18), and a liquid level sensor (19); The alarm threaded sleeve (14) is sleeved on the outer wall surface of the interface connecting sleeve (5), the spring sealing gasket (15) is connected to the rear wall surface of the alarm threaded sleeve (14), the alarm sealing sleeve (16) is sleeved on the outer wall surface of the alarm threaded sleeve (14), and is connected to the outer sealing limit sealing gasket (13) and the spring sealing gasket (15) through a threaded connection, the drainage tube (17) is connected to the lower wall surface of the alarm sealing sleeve (16), the collecting tube (18) is connected to the lower wall surface of the drainage tube (17), and the liquid level sensor (19) is installed on the inner wall surface of the collecting tube (18).

4. The inner and outer multi-layer sealed cooling and hot water circulation pump according to claim 1, characterized in that: The inner sealing guide sleeve (6) and the threaded connection groove (3) are connected by threads.

5. The inner and outer multi-layer sealed cooling and hot water circulation pump according to claim 3, characterized in that: The alarm threaded sleeve (14) and the alarm sealing sleeve (16) are connected by threads.

6. The inner and outer multi-layer sealed cooling and hot water circulation pump according to claim 3, characterized in that: An exhaust hole is provided on the upper wall surface of the collecting cylinder (18).

7. The cooling and hot water circulation pump with multiple internal and external sealing layers according to claim 3, characterized in that: A guide groove (20) is formed between the alarm sealing sleeve (16) and the outer sealing limit ring (12).

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