A gasket with a return branch

Abstract

The utility model relates to sealing equipment technical field, concretely relates to a sealing gasket with backflow branch, including the gasket main part and the joint pipe of coaxial line setting, the gasket main part and the joint pipe inside along the axial direction are passed and are opened with the flow channel, the first branch flow hole that gasket main part's inner wall is opened has the flow channel intercommunication, the outer wall of joint pipe is opened with the second branch flow hole, the gasket main part and the joint pipe inside are opened with the backflow channel that intercommunication first branch flow hole and second branch flow hole. The joint pipe is connected with the cooling liquid pipe of delivery, and the sleeve of cooling liquid pipe is in the joint pipe outside, when leaking, the cooling liquid that will enter the gap between joint pipe and delivery pipe is guided to the flow channel by backflow channel, and the leaked cooling liquid is backflowed to the flow channel, thereby realizing the effect of recycling the leaked cooling liquid and backflowing part to the main stream in the pipe, reducing the cooling liquid leakage amount.

Description

Technical Field

[0001] This utility model relates to the field of sealing equipment technology, specifically to a sealing gasket with a return branch. Background Technology

[0002] In the cooling process of castings, coolant needs to be delivered to the inside of the casting through an interface. The sealing ring at the interface, such as a circular ring or a flat gasket, is the core component to prevent coolant leakage. It usually adopts a cylindrical or flat mating structure.

[0003] In existing technologies, due to factors such as flatness deviations at pipe connections, gaps when the cylindrical surface fits the sealing ring, and uneven preload of flanges or connection structures during assembly, coolant leakage is likely to occur at the gaps, resulting in a certain leakage problem. Utility Model Content

[0004] The purpose of this invention is to provide a method that can recover leaked coolant and partially return it to the main flow in the pipe, thereby reducing the amount of leakage.

[0005] In a first aspect, embodiments of this application provide a sealing gasket with a return branch, comprising a gasket body and a connector tube arranged coaxially, wherein a flow channel is formed through the gasket body and the connector tube along the axial direction, a first branch hole communicating with the flow channel is formed on the inner wall of the gasket body, a second branch hole is formed on the outer wall of the connector tube, and a return channel communicating with the first branch hole and the second branch hole is formed in the gasket body and the connector tube.

[0006] In some embodiments, the return channel is inclined from the connector tube to the gasket body in the direction of the central axis.

[0007] In some embodiments, the return channels are provided in a ring-shaped manner with multiple channels evenly spaced apart along the axis of the flow channels.

[0008] In some embodiments, the sidewall of the connector pipe is provided with a flow-retarding groove, the bottom of which is connected to the first branch hole.

[0009] In some embodiments, the flow channel is formed along the circumference of the connector pipe.

[0010] In some embodiments, a retaining ring is provided on the side of the gasket body near the connector tube, and the retaining ring and the connector tube are spaced apart coaxially.

[0011] In some embodiments, a fixing groove is provided on the side of the fixing ring near the connector tube, and a filling ring for abutting the outer tube is provided in the fixing groove.

[0012] In some embodiments, a gasket ring is fitted onto the end of the connector tube away from the gasket body.

[0013] The beneficial effects of this utility model are: the connector pipe is connected to the coolant delivery pipe, and the coolant delivery pipe is sleeved on the outside of the connector pipe. When leakage occurs, the coolant that has entered the gap between the connector pipe and the delivery pipe is guided from the return channel to the flow channel, and the leaked coolant is returned to the flow channel, thereby achieving the effect of recovering the leaked coolant and returning part of it to the main flow in the pipe, reducing the amount of coolant leakage. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a sealing gasket with a return branch according to the present invention;

[0015] Figure 2 This is a cross-sectional view of a sealing gasket with a return branch according to the present invention.

[0016] Reference numerals: 1. Gasket body; 2. Connector tube; 3. Return channel; 4. Flow channel; 5. First branch hole; 6. Second branch hole; 7. Flow retardation groove; 8. Fixing ring; 9. Fixing groove; 10. Filling ring; 11. Gasket ring. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0022] In the cooling process of castings, coolant needs to be delivered to the inside of the casting through an interface. The sealing ring at the interface, such as a circular ring or a flat gasket, is the core component to prevent coolant leakage. It usually adopts a cylindrical or flat mating structure.

[0023] In the prior art, due to flatness deviations and gaps when the cylindrical surface and the sealing ring are fitted together, as well as uneven preload of the flange or connection structure during assembly, coolant is prone to leaking from the gaps, resulting in a certain leakage problem. In view of this, this application provides a sealing gasket with a return branch.

[0024] Example 1

[0025] Reference Figure 1 and Figure 2This application provides a sealing gasket with a return branch, including a gasket body 1, a connector tube 2, and an internal return channel 3 connected together; a flow channel 4 is formed in the center of the gasket body 1, and the flow channel 4 is connected to the connector tube 2; one end of the return channel 3 has a first branch hole 5 connected to the flow channel 4 on the inner wall of the gasket body 1, and the other end has a second branch hole 6 on the outer wall of the connector tube 2; when assembling and connecting the cooling water pipe, the sealing gasket is placed at the outlet end of the cooling water pipe, and the connector tube 2 is inserted into the inside of the cooling water pipe, allowing the flow channel to pass through the water pipe to return to its original position. The pre-tightening force after the cooling water pipe deforms secures the joint pipe 2 to the water pipe and aligns it with the flow channel 4 to connect with the cooling water flow. When the pre-tightening force is uneven, a gap is formed between the gasket body 1 and the water pipe. When the coolant flows in the flow channel 4, some coolant seeps out from the gap, causing a leak. The leaked coolant flows along the outer wall of the joint pipe 2, comes into contact with the first branch hole 6, flows in through the return channel 3, and then flows back into the flow channel 4 from the first branch hole 5, realizing the recovery and return of the leaked coolant and effectively reducing the amount of coolant leakage.

[0026] The return channel 3 is inclined from the connector pipe 2 to the gasket body 1 towards the central axis. According to the water flow direction, in the cross-sectional direction, the first branch hole 5 needs to be behind the second branch hole 6. When the return channel 3 extends from the outer wall of the connector pipe 2 to the inner wall of the gasket body 1, it is inclined towards the central axis of the flow channel 4. The axis of the return channel 3 forms an angle with the axis of the connector pipe 2. The first branch hole 5 is opened on the inner wall of the gasket body 1 near the connector pipe 2. The axis of the return channel 3 starts from the first branch hole 5 and is inclined towards the central axis of the flow channel 4, ensuring that the entire return channel 3 can merge into the flow channel 4. The inner wall of the flow channel is smooth. Under the action of gravity and its own flow inertia, the coolant flows quickly along the inclined return channel 3 towards the flow channel 4. The residence time of the coolant in the flow channel is significantly shortened, the return efficiency is significantly improved, and the leaked liquid is guided back to the flow channel 4 more quickly.

[0027] Multiple return channels 3 are evenly spaced in a ring along the axis of the flow channel 4; multiple return channels 3 are evenly spaced along the circumferential direction of the central axis of the flow channel 4, the included angle of two adjacent return channels 3 is the same, and the structure of each return channel 3 is inclined towards the central axis. The first branch hole 5 of each return channel 3 is evenly distributed on the inner circumference of the gasket body 1, and the second branch hole 6 is correspondingly distributed on the outer circumference of the connector pipe 2. Coolant leaking from different positions on the circumference can contact the corresponding second branch hole 6. Compared with a single return channel 3, it can avoid the problem of liquid accumulation caused by excessive local leakage.

[0028] Example 2

[0029] The side wall of the connector pipe 2 is provided with a flow-retarding groove 7, the bottom of which is connected to the first branch hole 5. The flow-retarding groove 7 is a strip-shaped groove that is opened along the axial direction of the connector pipe 2. The bottom of the flow-retarding groove 7 is completely connected to the second branch hole 6. When the pre-tightening force of the water pipe is uneven, resulting in a small amount of leakage, the leaked coolant flows in a dispersed state on the outer wall of the connector pipe 2. Some of the liquid can easily flow directly down the outer wall of the connector pipe 2 and cannot accurately enter the second branch hole 6. The flow-retarding groove 7 acts as a concentrating device to collect the coolant dispersed on the outer wall of the connector pipe 2. After the liquid converges in the flow-retarding groove 7, it flows into the second branch hole 6 at the bottom of the groove through a certain pressure of the coolant itself. Then, it flows back to the flow channel 4 through the return channel 3, avoiding the problem of the recovery function failing due to dispersed flow when there is a small flow of leakage.

[0030] The flow-retarding groove 7 is opened around the circumference of the connector pipe 2; the strip-shaped flow-retarding groove 7 is optimized into an annular flow-retarding groove 7, which is opened around the circumferential surface of the connector pipe 2; the two ends of the flow-retarding groove 7 are closed to form an annular shape, and the bottom of the annular flow-retarding groove 7 is evenly connected to multiple second branch holes 6, which can cover the outer wall of the connector pipe 2 in all directions. No matter where the leakage point is, when the leaked coolant flows down the outer wall of the connector pipe 2, it will enter the annular flow-retarding groove 7, and then flow into the corresponding return channel 3 through multiple second branch holes 6 evenly distributed at the bottom of the groove. Even if the leakage point changes frequently, the leakage recovery rate can still be maintained at a high level.

[0031] Example 3

[0032] A retaining ring 8 is provided on the side of the gasket body 1 near the connector tube 2. The retaining ring 8 and the connector tube 2 are spaced coaxially. The inner diameter of the retaining ring 8 matches the outer diameter of the connected coolant tube, ensuring that the retaining ring 8 surrounds the outer wall of the coolant tube. When the external tube is manually connected and there is a misalignment, which increases the coaxiality deviation between the external tube and the connector tube 2, the retaining ring 8 avoids deformation caused by rigid contact between the retaining ring 8 and the connector tube 2, and corrects the misaligned external tube through the inner wall of the retaining ring 8, reducing leakage caused by misalignment.

[0033] Based on the fixing ring 8, an annular fixing groove 9 is provided on the side of the fixing ring 8 near the connector pipe 2. An annular filling ring 10 matching the groove size is embedded inside the fixing groove 9. After the outer pipe is sleeved on the outside of the connector pipe 2, the outer wall of the outer pipe is in close contact with the inner wall of the filling ring 10, and the filling ring 10 fills the gap between the outer pipe and the fixing ring 8. When the cooling device vibrates during operation, the outer pipe will shake slightly, which will increase the gap between the outer pipe and the connector pipe 2. At this time, the filling ring 10 abuts against the outer pipe through its own structural elasticity, limiting the shaking amplitude of the outer pipe, and filling the gap between the outer pipe and the fixing ring 8 to reduce the leakage of coolant from the gap.

[0034] In other embodiments, the bottom end of the fixing groove 9 may be provided with toothed protrusions, the tips of which face the connector tube 2; the overall rigidity of the gasket body material is used to fix the connector tube 2 and the outer tube, wherein the toothed protrusions are triangular structures, and multiple protrusions are evenly distributed along the circumference of the fixing groove 9, and the tips of the toothed protrusions are in close contact with the inner wall of the filling ring 10; when the filling ring 10 is not used, the tips of the toothed protrusions extend out of the fixing groove 9 towards the connector tube 2 and abut against the outer wall of the outer tube. The toothed protrusions restrict the movement of the outer tube through mechanical engagement, ensuring the relative fixation of the sealing gasket and the outer tube, and the continuous flow of coolant to the return channel 3 on the outer wall of the connector tube 2 in case of leakage.

[0035] Example 4

[0036] A gasket 11 is fitted onto the end of the connector pipe 2 away from the gasket body; an annular gasket 11 is fitted onto the outer side of the end of the connector pipe 2 away from the gasket body 1. The gasket 11 has the same structure as the connector pipe and the gasket body, ensuring that the gasket 11 can cover the connection between the end face and the side wall of the connector pipe; the gasket 11 is used to fill the gap between the outer pipe and the rear end of the connector pipe 2, guide the water flow of the outer pipe to the flow channel 3, and at the same time disperse the pressure of the outer pipe on the connector pipe 2, so as to avoid deformation of the free end of the connector pipe 2 due to excessive local pressure.

[0037] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A sealing gasket with a return branch, characterized in that, The device includes a gasket body and a connector tube arranged coaxially. A flow channel is formed through the gasket body and the connector tube along the axial direction. A first branch hole connected to the flow channel is formed on the inner wall of the gasket body. A second branch hole is formed on the outer wall of the connector tube. A return channel connecting the first branch hole and the second branch hole is formed in the gasket body and the connector tube.

2. A sealing gasket with a return branch according to claim 1, characterized in that: The return channel is inclined from the connector pipe to the gasket body towards the central axis.

3. A sealing gasket with a return branch according to claim 2, characterized in that: The return channels are provided in a ring-shaped manner with multiple channels evenly spaced along the axis of the flow channels.

4. A sealing gasket with a return branch according to claim 1, characterized in that: The side wall of the connector pipe is provided with a flow-slowing groove, and the bottom of the flow-slowing groove is connected to the first branch hole.

5. A sealing gasket with a return branch according to claim 4, characterized in that: The flow-retarding groove is formed along the circumference of the connector pipe.

6. A sealing gasket with a return branch according to claim 1, characterized in that: A retaining ring is provided on the side of the gasket body near the connector tube, and the retaining ring and the connector tube are spaced apart on the same axis.

7. A sealing gasket with a return branch according to claim 6, characterized in that: The fixing ring has a fixing groove on the side near the connector tube, and a filling ring for abutting the outer tube is provided in the fixing groove.

8. A sealing gasket with a return branch according to claim 1, characterized in that: A gasket ring is fitted onto the end of the connector tube away from the gasket body.

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