A sealing connection structure for a liquid outlet of a device

Abstract

The application relates to the technical field of sealing connectors, and discloses a sealing connection structure for a liquid outlet of a device, which comprises a connecting shell, a water pump and a sealing sleeve, the connecting shell is used for connecting the water pump and other structures of a small device, the connecting shell is provided with a water passing hole, the sealing sleeve is sleeved on a water outlet pipe of a water outlet of the water pump, the water outlet pipe is inserted into the water passing hole of the connecting shell after being sleeved into the sealing sleeve, and then the water pump is fixed on the connecting shell by using fastening bolts. Further, the top surface of the sealing sleeve is provided with a top convex ring abutting against the top surface of the water passing hole, and the outer side surface of the sealing sleeve is provided with a middle convex ring and a bottom convex ring abutting against the inner side surface of the water passing hole. Compared with the prior art, the sealing connection structure optimizes the structure of the sealing sleeve, can realize reliable sealing by using only a single sealing sleeve, the structure of the sealing sleeve is low in manufacturing cost, the installation process is simple, and the sealing connection structure is high in universality.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing connection, in particular to a sealing connection structure for a liquid outlet of a device. BACKGROUND

[0002] Miniature water pumps can complete the transmission of various liquids and are mainly applied to various small devices. Since the internal space of small devices is narrow, high requirements are put forward for the miniature sealing connection at the water outlet of the miniature water pump. However, the existing sealing connection assembly is often too large in size, occupies the internal space of the small device, and affects the arrangement of other components. The narrow internal space also makes the installation of the sealing connection assembly difficult and low in efficiency. SUMMARY

[0003] To solve the above technical problems, the purpose of the present application is to provide a sealing connection structure for a liquid outlet of a device, which has the advantages of ingenious structure design.

[0004] Based on this, the present application provides a sealing connection structure for a liquid outlet of a device, which comprises a connecting shell, a water pump and a sealing sleeve. The connecting shell is provided with a water passage hole. The sealing sleeve is sleeved on the water outlet pipe of the water outlet of the water pump. The water outlet pipe is inserted into the water passage hole after being sleeved into the sealing sleeve. The water pump is fixed on the connecting shell by fastening bolts after being inserted into the water passage hole. The top surface of the sealing sleeve is provided with a top convex ring abutting against the top surface of the water passage hole. The outer surface of the sealing sleeve is provided with a middle convex ring and a bottom convex ring abutting against the inner surface of the water passage hole.

[0005] In some embodiments of the present application, the cross sections of the top convex ring, the middle convex ring and the bottom convex ring are all circular arc surfaces.

[0006] In some embodiments of the present application, the distance A between the outer surface of the sealing sleeve and the inner surface of the water passage hole is 0.4-0.8 mm.

[0007] In some embodiments of the present application, the sealing sleeve is in interference fit with the water outlet pipe. The interference size B of the sealing sleeve and the water outlet pipe is 0.5-1 mm and B is always greater than A.

[0008] In some embodiments of the present application, the distance C between the top surface of the sealing sleeve and the top surface of the water passage hole is 0.1-0.3 mm.

[0009] In some embodiments of the present application, the distance D between the top end of the top convex ring and the top surface of the water passage hole is 0.4-1 mm.

[0010] In some embodiments of the present application, the sealing sleeve is made of silica gel or rubber.

[0011] The sealing connection structure for the liquid outlet of the device provided by the embodiment of the present application has the beneficial effects that, compared with the prior art,

[0012] The sealing connection structure for the liquid outlet of the device provided by the embodiment of the present application has the beneficial effects that, compared with the prior art, Further, the top surface of the sealing sleeve is provided with a top protruding ring abutting against the top surface of the water passage hole, and the outer surface of the sealing sleeve is provided with a middle protruding ring and a bottom protruding ring abutting against the inner surface of the water passage hole. In the embodiment of the present application, the cross sections of the top protruding ring, the middle protruding ring and the bottom protruding ring are all circular arc surfaces. Based on the above structure, the sealing sleeve is sleeved on the water outlet pipe during use, and the sealing sleeve covering the water outlet pipe can effectively prevent the liquid in the water outlet pipe from flowing to the outer surface of the water outlet pipe to affect the sealing between the water outlet pipe and the water passage hole. Specifically, the top of the sealing sleeve is provided with a top protruding ring, and the outer surface is provided with a middle protruding ring and a bottom protruding ring. During use, the sealing sleeve is arranged in the water passage hole of the connecting shell together with the water outlet pipe. At this time, the top protruding ring abuts against the top surface of the water passage hole, and the middle protruding ring and the bottom protruding ring abut against the inner surface of the water passage hole. As shown in the figure, since the top protruding ring abuts against the connecting shell, the top protruding ring can fill the gap between the water passage hole and the top surface of the water outlet pipe, avoiding the leakage of the liquid flowing out of the water outlet pipe from the gap between the water outlet pipe and the water passage hole, thereby playing a sealing role. The abutment of the top protruding ring against the connecting shell can form a buffer between the water outlet pipe and the connecting shell, avoiding the generation of pressure due to the direct contact between the water outlet pipe and the connecting shell. The abutment of the middle protruding ring against the inner surface of the water passage hole realizes the sealing of the gap by the sealing sleeve. As the use of the device gradually weakens the force of the fastening bolt, when the force of the fastening bolt decreases, the pressure of the top protruding ring against the connecting shell also decreases. At this time, the liquid in the water outlet pipe has a chance to enter the gap between the connecting shell and the water outlet pipe through the top protruding ring. The arrangement of the middle protruding ring is equivalent to a secondary sealing of the gap, which can effectively avoid the above situation. The bottom protruding ring can correct the water outlet pipe during the process of assembling the water outlet pipe into the water passage hole, ensuring the accurate and effective middle protruding ring. In this way, the sealing connection structure optimizes the structure of the sealing sleeve, and only a single sealing sleeve can complete the reliable sealing function. The manufacturing cost of the sealing sleeve is low, the installation process is simple, and for different sizes of liquid outlet structures, only the corresponding sealing sleeve needs to be designed according to the liquid outlet hole diameter, and the same process can be used to complete the sealing, so the sealing connection structure has high universality. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The structure of the sealing sleeve of the embodiment of the present application is shown in the figure;

[0014] Figure 2 The structure of the sealing connection structure of the embodiment of the present application is shown in the figure;

[0015] Figure 3 Assembling view of the sealed connection structure of the embodiment of the present application;

[0016] Figure 4 As Figure 3 Detailed view of A in FIG.

[0017] In the figure, 1, sealing sleeve; 11, top protruding ring; 12, middle protruding ring; 13, bottom protruding ring; 2, water pump; 21, water outlet pipe; 3, connecting shell; 31, water passage; 4, fastening bolt. DETAILED DESCRIPTION

[0018] The specific embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present application, but are not used to limit the scope of the present application.

[0019] It should be understood that the terms "front", "back" and the like are used in this application to describe various information, but these information should not be limited to these terms, and these terms are only used to distinguish the same type of information from each other. For example, the "front" information can also be referred to as "back" information, and the "back" information can also be referred to as "front" information without departing from the scope of the present application.

[0020] As Figures 1 to 4 shown, the embodiment of the present application provides a sealed connection structure for the liquid outlet of a device, which comprises a connecting shell 3, a water pump 2 and a sealing sleeve 1, the connecting shell 3 is used to connect the water pump 2 and other structures of a small device, the connecting shell 3 is provided with a water passage 31, the sealing sleeve 1 is sleeved on the water outlet pipe 21 of the water outlet of the water pump 2, the water outlet pipe 21 is inserted into the water passage 31 of the connecting shell 3 after being sleeved into the sealing sleeve 1, and then the water pump 2 is fixed on the connecting shell 3 by using a fastening bolt 4. Further, the top surface of the sealing sleeve 1 is provided with a top protruding ring 11 abutting against the top surface of the water passage 31, and the outer surface of the sealing sleeve 1 is provided with a middle protruding ring 12 and a bottom protruding ring 13 abutting against the inner surface of the water passage 31. In the embodiment of the present application, the cross sections of the top protruding ring 11, the middle protruding ring 12 and the bottom protruding ring 13 are all circular arc surfaces.

[0021] Based on the above structure, when in use, the sealing sleeve 1 is sleeved on the water outlet pipe 21 of the water pump 2, and the sealing sleeve 1 covers the water outlet pipe 21 to effectively prevent the liquid in the water outlet pipe 21 from flowing to the outside of the water outlet pipe 21 and affecting the sealing between the water outlet pipe 21 and the water passage 31. Specifically, the top of the sealing sleeve 1 is provided with a top protruding ring 11, the outer side is provided with a middle protruding ring 12 and a bottom protruding ring 13, and when in use, the sealing sleeve 1 is inserted into the water passage 31 of the connecting shell 3 with the water outlet pipe 21, at this time, the top protruding ring 11 abuts against the top surface of the water passage 31, and the middle protruding ring 12 and the bottom protruding ring 13 abut against the inner side surface of the water passage 31. As shown in the figure, since the top protruding ring 11 abuts against the connecting shell 3, the top protruding ring 11 can fill the gap between the water passage 31 and the top surface of the water outlet pipe 21, avoiding the leakage of the liquid flowing out of the water outlet pipe 21 from the gap between the water outlet pipe 21 and the water passage 31, thereby playing a sealing role, and the abutment of the top protruding ring 11 against the connecting shell 3 can form a buffer between the water outlet pipe 21 and the connecting shell 3, avoiding the generation of pressure due to the direct contact between the water outlet pipe 21 and the connecting shell 3. The abutment of the middle protruding ring 12 against the inner side surface of the water passage 31 realizes the sealing of the gap by the sealing sleeve 1, and as the equipment is used, the force of the fastening bolt 4 gradually weakens, and when the force of the fastening bolt 4 decreases, the pressure of the top protruding ring 11 against the connecting shell 3 also decreases, at this time, the liquid in the water outlet pipe 21 has a chance to pass through the top protruding ring 11 into the gap between the connecting shell 3 and the water outlet pipe 21, and the setting of the middle protruding ring 12 is equivalent to a secondary sealing of the gap, which can effectively avoid the above situation. The bottom protruding ring 13 can correct the water outlet pipe 21 to the center during the process of assembling the water outlet pipe 21 into the water passage 31, ensuring the accurate and effective middle protruding ring 12. In this way, the sealing connection structure optimizes the structure of the sealing sleeve 1, and only a single sealing sleeve 1 can complete the reliable sealing function, the manufacturing cost of the sealing sleeve 1 is low, the installation process is simple, and for different sizes of liquid outlet structures, only the corresponding sealing sleeve 1 needs to be designed according to the liquid outlet hole diameter, and the same process can be used to complete the sealing, and the sealing connection structure has high universality.

[0022] Optionally, in order to control the manufacturing cost, the sealing sleeve 1 is made of silica gel or rubber, the sealing sleeve 1 has good ductility while having a certain hardness, and at the same time, due to the corresponding change model of silica gel or rubber in the compression process, in order to obtain better sealing effect, the manufacturer repeatedly tests and tests various parameters between the sealing sleeve 1 and the water outlet pipe 21 and the water passage 31, and finally obtains a plurality of size parameters that can improve the sealing effect of the sealing sleeve 1, specifically, the distance between the outer side surface of the sealing sleeve 1 and the inner side surface of the water passage 31 is defined as A, and when A is between 0.4-0.8mm, better sealing effect can be obtained.

[0023] Further, in order to facilitate assembly, the sealing sleeve 1 is in interference fit with the water outlet pipe 21, and interference fit and compression of the convex ring 12 on the water passage hole 31 can effectively ensure the sealing of the inside and outside of the sealing sleeve 1. The interference size of the sealing sleeve 1 and the water outlet pipe 21 is defined as B, and the size of B is between 0.5-1mm, and the value of B should be always greater than the value of A.

[0024] Further, the distance between the top surface of the sealing sleeve 1 and the top surface of the water passage hole 31 is tested and tested to obtain better sealing effect, and the distance between the top surface of the sealing sleeve 1 and the top surface of the water passage hole 31 is defined as C, and the size of C is preferably 0.1-0.3mm.

[0025] Further, in order to obtain better sealing effect, the distance between the top end of the top convex ring 11 and the top surface of the water passage hole 31 is tested and tested, and the distance between the top end of the top convex ring 11 and the top surface of the water passage hole 31 is defined as D, and the size of D is preferably 0.4-1mm.

[0026] Of course, the sealing connection structure of the present application is not only used for connecting the water pump 2 and the connecting shell 3, but also can be used in various sealing connection application scenarios.

[0027] In summary, the present application provides a sealing connection structure for the liquid outlet of a device, which comprises a connecting shell, a water pump and a sealing sleeve. The connecting shell is used to connect the water pump and other structures of a small device, and the connecting shell is provided with a water passage hole. The sealing sleeve is sleeved on the water outlet pipe of the water pump, and the water outlet pipe is inserted into the water passage hole of the connecting shell after being sleeved in the sealing sleeve. Then, the water pump is fixed on the connecting shell by using a fastening bolt. Further, the top surface of the sealing sleeve is provided with a top convex ring abutting against the top surface of the water passage hole, and the outer side surface of the sealing sleeve is provided with a middle convex ring and a bottom convex ring abutting against the inner side surface of the water passage hole. Compared with the prior art, the structure of the sealing sleeve is optimized, and reliable sealing can be achieved by using only a single sealing sleeve. The structure of the sealing sleeve is low in manufacturing cost and simple in installation process. For liquid outlet structures of different sizes, the same process can be used to complete the sealing by designing corresponding sealing sleeves according to the aperture of the liquid outlet.

[0028] The above description is only the preferred embodiment of the present application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should be considered as the protection scope of the present application.

Claims

1. A sealing connection structure for the liquid outlet of a device, characterized in that, The utility model relates to a water pump sealing sleeve, which comprises a connecting shell, a water pump and a sealing sleeve, the connecting shell is provided with a water hole, the sealing sleeve is sleeved on the water outlet pipe of the water pump, the water outlet pipe is inserted into the water hole after being sleeved on the sealing sleeve, the water pump is fixed on the connecting shell by fastening bolts after being inserted into the water hole, the top surface of the sealing sleeve is provided with a top convex ring abutting against the top surface of the water hole, and the outer surface of the sealing sleeve is provided with a middle convex ring and a bottom convex ring abutting against the inner surface of the water hole. The distance A between the outer surface of the sealing sleeve and the inner surface of the water hole is 0.4-0.8 mm, the sealing sleeve is in interference fit with the water outlet pipe, the interference size B of the sealing sleeve and the water outlet pipe is 0.5-1 mm and B is always greater than A, and the distance C between the top surface of the sealing sleeve and the top surface of the water hole is 0.1-0.3 mm. The cross sections of the top convex ring, the middle convex ring and the bottom convex ring are all circular arc surfaces, and the distance D between the top end of the top convex ring and the top surface of the water hole is 0.4-1 mm.

2. The sealed connection structure for an equipment liquid outlet according to claim 1, wherein The sealing sleeve is made of silica gel or rubber.

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