CN219120066U - Detachable connecting structure for sealing and fixing water pipe of V-method boiling cooling bed - Google Patents

Abstract

The utility model provides a detachable connecting structure for sealing and fixing a water pipe of a V-method boiling cooling bed, which comprises a fixed sleeve, a sealing ring and a pressing sleeve; the middle part of the fixing sleeve is communicated with a channel which is suitable for a water pipe to pass through, the inner wall of part of the channel is provided with internal threads, and the fixing sleeve is suitable for being fixedly arranged at the position of a through hole of the chamber steel plate in a sealing way; the sealing ring is arranged at the inner side of the second channel and is suitable for being sleeved at the outer side of the water pipe at the corresponding position; the middle part of the compression sleeve is provided with a middle channel in a penetrating way, and is provided with a pressing section, a connecting section and an operating section which are connected in sequence; the pressing section is used for pressing the sealing ring; the outer wall of the connecting section is provided with external threads and is suitable for being in threaded connection with internal threads arranged on the inner wall of the channel. The detachable connection structure of the utility model enables the water pipe to be detachably mounted on the steel plate of the chamber body. When the water pipe needs to be replaced, the pressing sleeves at the two ends are disassembled, the water pipe can be pulled out from one end to the other end by using the steel rod, and a new water pipe is inserted.

Description

Detachable connecting structure for sealing and fixing water pipe of V-method boiling cooling bed

Technical Field

The utility model relates to the technical field of V-method modeling production lines, in particular to a detachable connecting structure for sealing and fixing a water pipe of a V-method boiling cooling bed.

Background

The V method is to use loose dry sand as molding sand, and the casting sand cannot contain any moisture so as to reduce casting defects such as casting pores. After shakeout, the molding sand is generally cooled by using a boiling cooling bed, and the boiling cooling bed adopts a water cooling and air cooling mode; the blast with large air volume is a power source for realizing the boiling flow of sand, and the blast is added with air draft to take away heat and dust; the water pipes are arranged in the boiling cooling bed chamber body along the sand flow direction, the two ends of the water pipes are larger water tanks, the two ends of each water pipe are inserted into the water tanks at the two ends, one water tank is used for water inflow, the other water tank is used for water outflow after passing through all the water pipes, sand shuttles in the water pipes layer by layer, and heat exchange between hot sand and cold water in the water pipes is realized. The two modes are carried out simultaneously, so that sand is well cooled, and the sand cooling device is necessary and reliable in V-method casting.

Since the sand molded by the V method cannot contain moisture, the sealing of the two ends of the water pipe of the boiling cooling bed is very critical. The working condition of the water pipe is unstable, namely the water pipe is swayed, and the water pipe is continuously dithered up and down and left and right under the combined action of blast air and sand; and secondly, the water pipe is continuously subjected to cold and heat, and expansion and contraction are unavoidable and frequently occur. The industry enterprises also continuously conduct exploration experiments, and final welding is the most reliable method. The welding adopts a combination process measure of heating and repeated welding, and finally, the sealing is reliable only.

Because sand flows forward between the water pipes, the pipe walls of the water pipes are continuously worn, the pipe walls are finally ground thoroughly, and once water leaks, the whole boiling cooling bed is scrapped.

In order to change the situation, industry casting machinery production enterprises are also continuously exploring, such as a structure that a certain unit uses a conical rubber sealing sleeve, an inner conical steel sleeve is welded on a steel plate of a water tank chamber body, an outer conical rubber sealing sleeve can be clamped into the inner conical steel sleeve, a water pipe penetrates through the inner conical steel sleeve and the rubber sealing sleeve, a special nut is used for pressing the rubber sleeve outside to realize sealing, and a user can screw the nut down after using the steel sleeve for a period of time, so that the scheme seems to be feasible in theory, but the scheme fails in a water adding experiment in a factory; the reason is that when the nut extrudes the rubber sleeve and further compresses the steel plate of the chamber body, hundreds of water pipes are compressed simultaneously, the steel plate of the chamber body is easy to deform, and when the steel plate of the chamber body is compressed at the back, the steel plate of the chamber body is necessarily loosened after the steel plate is compressed at the front. And then the conical rubber sleeve is replaced by polyurethane material with stronger toughness, the polyurethane material fails, and finally, the welding mode is changed back.

As described above, the existing boiling bed water pipe is mainly of a welded structure, the welding process is complex, the workload is large, and the biggest problem is that the product purchased by the user is disposable, and once the water pipe is worn out and leaked, the whole boiling bed is scrapped. The wall thickness of the water pipe is some, the service life is some, but the heat conduction efficiency is some, the stainless steel water pipe is used instead to increase the service life, but the stainless steel water pipe also has the problem of poor heat conduction.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the technical defect that the whole boiling cooling bed needs to be scrapped because the two ends of the water pipe of the V-method boiling cooling bed are respectively welded and connected to the water tank, and the pipe wall of the water pipe is ground to leak water, so that the detachable connecting structure for sealing and fixing the water pipe of the V-method boiling cooling bed is provided.

Therefore, the utility model provides a detachable connecting structure for sealing and fixing a water pipe of a V-method boiling cooling bed, which is characterized by comprising the following components:

the middle part of the fixed sleeve is communicated with a channel which is suitable for a water pipe to pass through; one side of the channel is a first channel, the other side of the channel is a second channel, the first channel and the second channel are coaxially arranged, and the inner diameter of the second channel is larger than that of the first channel; an inner thread is arranged on the inner wall of the tail section of the second channel; the position of the fixed sleeve, which is opposite to the first channel, is suitable for being fixedly arranged at the position of the through hole of the chamber steel plate in a sealing way;

the sealing ring is arranged on the smooth section at the inner side of the second channel and is suitable for being sleeved at the outer side of the water pipe at the corresponding position;

the middle part of the compression sleeve is provided with a middle channel in a penetrating way, and the compression sleeve is provided with a pressing section, a connecting section and an operating section which are sequentially connected; the pressing section is used for pressing the sealing ring; and the outer wall of the connecting section is provided with external threads and is suitable for being in threaded connection with internal threads arranged on the inner wall of the second channel.

As a preferable scheme, the sealing ring further comprises a metal gasket which is arranged outside the sealing ring; the pressing sleeve presses the metal gasket to further press the sealing ring.

As a preferable scheme, the fixing sleeve is fixedly arranged at the position of the through hole of the chamber steel plate in a welding way.

Preferably, a flange is arranged on the outer wall of the fixing sleeve, and the flange is suitable for blocking on the outer wall of the chamber steel plate.

As a preferable scheme, the second channel is divided into three sections, the first section is a smooth section along the direction from the first channel to the second channel, the second section is a tool withdrawal groove, and the third section is a tail section; the three sections have stepped increases in inner diameter.

As a preferred aspect, the seal ring includes:

at least two V-shaped rubber rings are arranged side by side along the axial direction, and the cross section of the V-shaped rubber rings is V-shaped;

the support ring is installed with the V-shaped rubber ring in an extrusion mode, the end face of one end, in contact with the V-shaped rubber ring, of the support ring is inwards recessed to form a containing groove for installing the V-shaped rubber ring, and the end face of the other end is a plane;

the pressing ring is installed with the V-shaped rubber ring in an extrusion mode, the end face of one end, which is in contact with the V-shaped rubber ring, of the pressing ring protrudes outwards, and the end face of the other end is a plane;

the support ring, the V-shaped rubber ring and the compression ring are sequentially extruded together, are installed on the inner side of the second channel, and are sleeved on the outer side of the water pipe at the corresponding position.

As a preferable scheme, at least 4V-shaped rubber rings are overlapped.

Preferably, the inner diameter of the intermediate channel is substantially the same as the outer diameter of the water pipe.

Preferably, the outer diameter of the operating section is larger than the inner diameter of the second channel at the position facing the opening of the pressing sleeve.

As a preferable scheme, the internal thread arranged on the inner wall of the second channel is a fine thread; the external thread arranged on the outer wall of the compression sleeve is a fine thread.

The technical scheme provided by the utility model has the following advantages:

the utility model relates to a detachable connecting structure for sealing and fixing a water pipe of a V-method boiling cooling bed, which comprises a fixing sleeve, a sealing ring and a pressing sleeve, wherein the fixing sleeve is provided with a channel which is arranged in a penetrating way, the channel is divided into a first channel and a second channel, the first channel and the second channel are coaxially arranged, and the water pipe passes through the first channel and the second channel; the position of the fixing sleeve corresponding to the first channel is penetrated at the position of the through hole of the chamber steel plate and is welded and fixed; the sealing ring is arranged on the inner side of the smooth section of the second channel and sleeved on the outer side of the water pipe at the corresponding position; the pressing sleeve is sleeved on the water pipe, the pressing section is used for pressing the sealing ring, and the external thread arranged on the outer wall of the connecting section is in threaded connection with the internal thread arranged on the inner wall of the end section of the second channel, so that the extrusion fixation is realized.

According to the detachable connecting structure, when a plurality of water pipes (generally 259 water pipes) are installed on a steel plate of a chamber body, a fixing sleeve is fixedly welded at the position of a through hole of the steel plate of the chamber body, so that sealing and fixing are realized; then the water pipe passes through a pair of fixing sleeves which are correspondingly arranged, the sealing ring is sleeved outside the water pipe and pushed to a smooth section inside the second channel, and the sealing ring is expanded inwards and outwards by screwing the pressing sleeve to press the sealing ring, so that the sealing connection between the outer wall of the water pipe and the inner wall of the fixing sleeve is realized; in the connecting mode, the position of the fixed sleeve, which is opposite to the first channel, is fixedly arranged at the through hole of the chamber steel plate in a sealing way, the sealing ring in the second channel is pressed to expand towards the inner side and the outer side, and the inner wall of the fixed sleeve and the outer wall of the water pipe are respectively extruded to realize sealing, so that no stress exists between the fixed sleeve and the chamber steel plate during tensioning installation, and the sealing connection between the fixed sleeve and the chamber steel plate is not damaged; in addition, in the expansion sealing mode, when the water pipe vibrates due to the flowing of molding sand or expands and contracts due to heat, the sealing ring is buffered, so that the sealing is not easy to break. The metal gasket is arranged, so that the sealing ring can be prevented from being damaged by screwing when the pressing sleeve presses the sealing ring.

Drawings

In order to more clearly illustrate the technical solutions in the prior art or in the embodiments of the present utility model, the following brief description is given of the drawings used in the description of the prior art or the embodiments.

FIG. 1 is a schematic view of a water pipe connected to a steel plate of a chamber body by a detachable connection structure.

Fig. 2 is an enlarged schematic view of the structure of the portion a in fig. 1.

Fig. 3 is an enlarged schematic view of the structure of the portion B in fig. 1.

Fig. 4 is a schematic view of the seal ring of fig. 1.

Reference numerals: 1. a fixed sleeve; 10. a channel; 11. a first channel; 12. a second channel; 121. a smooth section; 122. a tool retracting groove; 123. a tail section; 13. a flange; 2. a seal ring; 21. a support ring; 22. v-shaped rubber rings; 23. a compression ring; 3. a compacting sleeve; 30. an intermediate channel; 31. a pressing section; 32. a connection section; 33. an operating section; 4. a metal gasket; 100. a chamber steel plate; 200. a water pipe.

Detailed Description

In order for those skilled in the art to better understand the present solution, the following description will clearly and fully describe the technical solution in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the claims and description herein are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation. Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those skilled in the art as the case may be. In addition, the term "plurality" shall mean two as well as more than two. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Examples

The embodiment provides a detachable connection structure for sealing and fixing a water pipe of a V-method boiling cooling bed, which is shown in fig. 1-3 and comprises the following steps: a fixed sleeve 1, a sealing ring 2 and a compression sleeve 3; wherein:

the middle part of the fixed sleeve 1 is provided with a channel 10 which is suitable for the water pipe 200 to pass through; the channel 10 comprises a first channel 11 and a second channel 12, the first channel 11 and the second channel 12 are coaxially connected, and the inner diameter of the second channel 12 is larger than that of the first channel 11; an inner thread is arranged on the inner wall of the end section 123 of the second channel 12; the position of the fixed sleeve 1 opposite to the first channel 11 is suitable for being fixedly and hermetically arranged at the position of the through hole of the chamber steel plate 100; the sealing ring 2 is arranged on the smooth section 121 inside the second channel 12 and is suitable for being sleeved outside the water pipe 200 at the corresponding position; the middle part of the compression sleeve 3 is provided with a middle channel 30 in a penetrating way, and is provided with a pressing section 31, a connecting section 32 and an operating section 33 which are sequentially connected; the pressing section 31 is used for pressing the sealing ring 2; the outer wall of the connecting section 32 is provided with external threads adapted to be threadedly coupled with internal threads provided on the inner wall of the second passageway 12.

In the detachable connection structure of the embodiment, when a plurality of water pipes 200 (generally 259) are installed on the chamber steel plate 100, the fixing sleeve 1 is fixed and welded at the position of the through hole of the chamber steel plate 100 to realize sealing and fixing; the water pipe 200 passes through a pair of fixing sleeves 1 which are correspondingly arranged, the sealing ring 2 is sleeved outside the water pipe 200 and pushed to the smooth section 121 inside the second channel 12, and the sealing ring 2 is expanded inwards and outwards by screwing the pressing sleeve 3 to press the sealing ring 2, so that the sealing connection between the outer wall of the water pipe 200 and the inner wall of the fixing sleeve 1 is realized; in the connecting mode, the position of the fixed sleeve 1 opposite to the first channel 11 is fixedly arranged at the through hole position of the chamber steel plate 100 in a sealing way, the sealing ring 2 positioned in the second channel 12 is pressed to expand towards the inner side and the outer side, and the inner wall of the fixed sleeve 1 and the outer wall of the water pipe 200 are respectively extruded to realize sealing, so that when the fixed sleeve 1 and the chamber steel plate 100 are tightly arranged in a tensioning way, no stress exists between the fixed sleeve 1 and the chamber steel plate 100, and the sealing connection between the fixed sleeve 1 and the chamber steel plate 100 is not damaged; in addition, in this tight sealing method, when the water pipe 200 vibrates due to the flow of molding sand or expands and contracts with heat, the sealing ring 2 is buffered, so that the sealing is not easily broken.

The detachable connection structure of the present utility model enables the water pipe 200 to be detachably mounted on the chamber body steel plate 100. When the water pipe 200 is worn out and leaked due to long-term use, the damaged water pipe 200 is found, the compression sleeve 3 at the two ends is disassembled, the water pipe 200 is pushed from one end to the other end by using a steel rod, the water pipe 200 can be pulled out from the other end, and a new water pipe 200 can be inserted. When the new water pipe 200 is replaced, the seal ring 2 is replaced entirely.

As a preferred design, the sealing ring further comprises a metal gasket 4 which is arranged outside the sealing ring 2; the pressing sleeve 3 presses the metal gasket 4, and then presses the sealing ring 2. The metal gasket 4 can prevent the sealing ring 2 from being damaged when the pressing sleeve 3 presses the sealing ring 2.

The fixing sleeve 1 is fixedly arranged at the position of the through hole of the chamber steel plate 100 in a welding mode. Further, a flange 13 is provided on the outer wall of the fixing sleeve 1, and the flange 13 is adapted to be blocked on the outer wall of the chamber steel plate 100.

The second channel 12 is divided into at least three sections, along the direction from the first channel 11 to the second channel 12, the first section is a smooth section 121, the second section is a tool withdrawal groove 122, and the third section is a tail section 123; the three sections have stepped increases in inner diameter. When installing the water pipe 200 of different diameter sizes, can select the sealing washer 2 of different specifications, according to the interval distance between water pipe 200 and the second passageway 12, select suitable gap installation sealing washer 2, when compressing tightly cover 3 compresses tightly sealing washer 2, sealing washer 2 inflation, extrusion seal fixes water pipe 200.

In this embodiment, as shown in fig. 4, the seal ring 2 includes a support ring 21, at least two V-shaped rubber rings 22, and a pressing ring 23; wherein, at least two V-shaped rubber rings 22 are arranged side by side along the axial direction, and the cross section is V-shaped; the supporting ring 21 is installed with the V-shaped rubber ring 22 in an extrusion mode, the end face of one end, which is contacted with the V-shaped rubber ring 22, of the supporting ring 21 is recessed inwards to form a containing groove for installing the V-shaped rubber ring 22, and the end face of the other end is a plane; the pressing ring 23 is installed with the V-shaped rubber ring 22 in an extrusion mode, the end face of one end, which is in contact with the V-shaped rubber ring 22, of the pressing ring 23 protrudes outwards, and the end face of the other end is a plane; the support ring 21, the V-shaped rubber ring 22 and the compression ring 23 are sequentially extruded together, are installed on the inner side of the smooth section of the second channel 12, and are sleeved on the outer side of the water pipe 200 at the corresponding positions.

As a preferred embodiment, at least 4V-shaped rubber rings 22 are provided in an overlapping manner.

When the sealing ring 2 arranged in the structure is pressed by the pressing sleeve 3, the pressing ring 23 is pressed first, and one end of the pressing ring 23 protruding outwards is pressed by the V-shaped rubber ring 22, so that at least two V-shaped rubber rings 22 arranged in the middle are expanded outwards, the water pipe 22 is pressed and sealed and fixed, the contact area of the pressing seal is enlarged, and the stable and reliable sealing to the inside and the outside is realized.

In addition, with the sealing ring 2 having the above structure, when the water pipe 200 is slightly deformed due to expansion with heat and contraction with cold, the sealing ring 2 can be slightly deformed, and the formed stable seal is not destroyed.

In this embodiment, the inner diameter of the intermediate channel 30 of the compression sleeve 3 is substantially the same as the outer diameter of the water tube 200. The outer diameter of the actuating section 33 is greater than the inner diameter of the second channel 12 at the opening point on the side facing the pressure sleeve 3, so that the connecting section 32 can be blocked with the end of the fixing sleeve 1 after being completely screwed into the second channel 12.

The internal thread arranged on the inner wall of the second channel 12 is a fine thread, and the external thread arranged on the outer wall of the compression sleeve 3 is a fine thread, so that the thread is ensured not to loosen when the water pipe 200 shakes.

The utility model relates to a detachable connecting structure for sealing and fixing a water pipe of a V-method boiling cooling bed, which comprises the following steps:

firstly, penetrating the fixing sleeve 1 through a through hole of the chamber steel plate 100, enabling the position of the flange 13 to be in contact with the outer wall of the chamber steel plate 100, and then adopting a welding mode to fix the fixing sleeve 1 on the chamber steel plate 100 in a welding mode; after all the fixing sleeves 1 are welded and connected, the water pipe 200 passes through a pair of fixing sleeves 1 which are correspondingly arranged, and two ends are exposed in a peer-to-peer manner; the sealing ring 2 and the metal gasket 4 are sleeved outside the water pipe 200 and pushed to the inner side of the smooth section 121 inside the second channel 12; and finally, the compression sleeve 3 is sleeved on the exposed water pipe 200, and the compression sleeve 3 is screwed to press the metal gasket 4 and further press the sealing ring 2, so that the sealing ring 2 is expanded inwards and outwards, and the sealing and fixed connection of the water pipe 200 in the fixed sleeve 1 is realized.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. And obvious changes and modifications which are extended therefrom are still within the scope of the present innovative teachings.

Claims (10)

1. A can dismantle connection structure that is used for V method boiling cooling bed water pipe seal to fix is characterized in that includes:

a channel (10) which is suitable for a water pipe (200) to pass through is arranged in the middle of the fixed sleeve (1); one side of the channel (10) is provided with a first channel (11), the other side is provided with a second channel (12), the first channel (11) and the second channel (12) are coaxially arranged, and the inner diameter of the second channel (12) is larger than the inner diameter of the first channel (11); an inner thread is arranged on the inner wall of the tail section (123) of the second channel (12); the position of the fixed sleeve (1) opposite to the first channel (11) is suitable for being fixedly arranged at the position of a through hole of the chamber steel plate (100) in a sealing way;

a sealing ring (2) which is arranged on a smooth section (121) inside the second channel (12) and is suitable for being sleeved outside the water pipe (200) at the corresponding position;

the middle part of the compression sleeve (3) is provided with a middle channel (30) in a penetrating way, and the compression sleeve is provided with a pressing section (31), a connecting section (32) and an operating section (33) which are connected in sequence; the pressing section (31) is used for pressing the sealing ring (2); the outer wall of the connecting section (32) is provided with external threads and is suitable for being in threaded connection with internal threads arranged on the inner wall of the second channel (12).

2. The detachable connection according to claim 1, wherein: the sealing ring also comprises a metal gasket (4) which is arranged at the outer side of the sealing ring (2); the pressing sleeve (3) presses the metal gasket (4) to further press the sealing ring (2).

3. The detachable connection according to claim 1, wherein: the fixing sleeve (1) is fixedly arranged at the position of the through hole of the chamber steel plate (100) in a welding mode.

4. A detachable connection according to claim 3, wherein: the outer wall of the fixed sleeve (1) is provided with a flange (13), and the flange (13) is suitable for being blocked on the outer wall of the chamber steel plate (100).

5. The detachable connection according to claim 1, wherein: the second channel (12) is divided into three sections, the first section is a smooth section (121), the second section is a tool withdrawal groove (122) and the third section is a tail section (123) along the direction from the first channel (11) to the second channel (12); the three sections have stepped increases in inner diameter.

6. The detachable connection according to claim 1, characterized in that the sealing ring (2) comprises:

at least two V-shaped rubber rings (22) are arranged side by side along the axial direction, and the cross section of the V-shaped rubber rings is V-shaped;

the support ring (21) is installed by extrusion with the V-shaped rubber ring (22), the end face of one end, which is contacted with the V-shaped rubber ring (22), of the support ring (21) is inwards recessed to form a containing groove for installing the V-shaped rubber ring (22), and the end face of the other end is a plane;

the compression ring (23) is installed by being extruded with the V-shaped rubber ring (22), the end face of one end, which is contacted with the V-shaped rubber ring (22), of the compression ring (23) protrudes outwards, and the end face of the other end is a plane;

the support ring (21), the V-shaped rubber ring (22) and the compression ring (23) are sequentially extruded together, are installed on the inner side of the second channel (12), and are sleeved on the outer side of the water pipe (200) at the corresponding position.

7. The detachable connection according to claim 6, wherein: at least 4V-shaped rubber rings (22) are overlapped.

8. The detachable connection according to claim 1, wherein: the inner diameter of the intermediate channel (30) is substantially the same as the outer diameter of the water tube (200).

9. The detachable connection according to claim 1, wherein: the outer diameter of the operating section (33) is larger than the inner diameter of the second channel (12) towards the opening position of one side of the pressing sleeve (3).

10. The detachable connection according to claim 1, wherein: the internal thread arranged on the inner wall of the second channel (12) is a fine thread; the external thread arranged on the outer wall of the compression sleeve (3) is a fine thread.

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