CN116078997A - V-method boiling cooling bed with replaceable water pipe - Google Patents

Abstract

The invention provides a V-method boiling cooling bed with a replaceable water pipe, which comprises a cooling chamber, a water inlet tank, a water outlet tank, a water pipe, a blast chamber, a blast structure and the like; the two ends of the water pipe are fixedly arranged at the two ends of the cooling chamber in a sealing way through the detachable connecting structure, the detachable connecting structure is reliable in sealing, the water pipe can be replaced, and the water pipe can be replaced after the water pipe is worn out due to long-time use without eliminating the whole cooling bed; the cooling bed has hundreds of water pipes, so that the cost of eliminating the whole cooling bed due to the damage of one water pipe is very high.

Description

V-method boiling cooling bed with replaceable water pipe

Technical Field

The invention relates to the technical field of V-method modeling production lines, in particular to a V-method boiling cooling bed with a replaceable water pipe.

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 problems to be solved by the invention are to overcome the technical defects that the water pipe of the V-method boiling cooling bed in the prior art cannot be replaced, once the water leakage at the sealing position or the serious abrasion of the water pipe only can replace the whole boiling bed, the service life is short and the replacement cost is high, thereby providing the V-method boiling cooling bed which has good sealing effect, the water pipe can be replaced and the replacement cost is greatly saved.

To this end, the invention provides a V-process ebullient cooling bed with replaceable water tubes, comprising:

a cooling chamber having a cooling space;

the water inlet water tank is arranged at the outer side of one end of the cooling chamber;

the water outlet tank is arranged at the outer side of the other end of the cooling chamber;

the water pipes are provided with a plurality of water pipes, and two ends of the water pipes are respectively and fixedly arranged at two ends of the cooling chamber in a sealing way through a detachable connecting structure and are respectively communicated with the water inlet water tank and the water outlet water tank; the water pipes are uniformly arranged below the cooling space;

a blast chamber provided below the cooling chamber and having a plurality of upper openings communicating with the cooling space;

a blowing structure communicating with the blowing chamber for blowing air into the blowing chamber;

the air outlet is arranged above the cooling chamber and is communicated with the cooling space;

the sand inlet is arranged above one end of the cooling chamber and is communicated with the cooling space;

the sand outlet is arranged below one end of the cooling chamber and is communicated with the cooling space;

and the cooling chamber is obliquely arranged downwards along the direction from the sand inlet to the sand outlet.

As a preferred aspect, the detachable connection structure includes:

the middle part of the fixing sleeve is provided with a channel in a penetrating way, and the channel is used for the 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 opposite to the first channel is suitable for sealing and fixedly mounting the through hole of the chamber steel plate of the cooling chamber;

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, wherein 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 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 preferred solution, the blast structure comprises a blast pipe fixedly installed outside the cooling chamber, one end of the blast pipe being in communication with the blast blower, the blast pipe being in communication with the blast chamber through a plurality of blast pipes.

As a preferable scheme, the sand guide structure is arranged at the position of the cooling chamber opposite to the sand inlet.

As a preferred aspect, the sand guiding structure includes:

the first sand guide plate is provided with angle steel and is arranged at the upper stream position below the sand inlet;

the second sand guide plate is provided with angle steel and is arranged at the downstream position below the sand inlet;

the setting position of the first sand guide plate setting angle steel is higher than the setting position of the second sand guide plate setting angle steel;

the sand guide plate, both ends are placed respectively on angle steel is laid to first sand guide plate and second sand guide plate is laid on the angle steel, and the middle part evenly is equipped with the hourglass sand hole, follows the lateral direction of cooling chamber, the sand guide plate top evenly is provided with a plurality of fender sand laths.

As a preferable scheme, the cooling device further comprises a water pipe supporting structure, and comprises a supporting rod, wherein the supporting rod is fixedly arranged along the transverse direction of the cooling chamber; the support rod is provided with a plurality of grooves for supporting the water pipe.

As a preferable scheme, the supporting rods for supporting the water pipes of different levels are arranged at a gradually rising and spaced distance along the upstream to downstream direction.

The technical scheme provided by the invention has the following advantages:

the invention relates to a V-method boiling cooling bed with a replaceable water pipe, which comprises a cooling chamber, a water inlet tank, a water outlet tank, a water pipe, a blast chamber, a blast structure and the like; when the equipment works, hot sand enters a cooling space of the cooling chamber from the sand inlet, the position of the cooling chamber at the sand inlet is higher, and after the hot sand enters, the hot sand flows at the position of the sand outlet which is lower; the blast chamber is arranged below the cooling chamber, and after air is blown in through the blast structure, not only is sand blown to flow, but also heat and dust in the hot sand are blown upwards to the air outlet to be discharged; the water pipes are uniformly arranged below the cooling space, hot sand flows downwards from the gaps of the water pipes, cooling water flows into the water outlet tank with a higher position after flowing through the water pipes from the water inlet tank with a lower position, and water in the water pipes exchanges heat with the hot sand to take away heat, so that the temperature of molding sand is reduced; according to the V-method boiling cooling bed, two ends of the water pipe are fixedly arranged at two ends of the cooling chamber in a sealing way through the detachable connecting structure, the detachable connecting structure is reliable in sealing, the water pipe can be replaced, and the water pipe can be replaced without eliminating the whole cooling bed after the water pipe is worn out due to long-time use; the cooling bed has 259 water pipes, and the cost of eliminating the whole cooling bed due to the damage of one water pipe is quite high.

The detachable connecting structure comprises a fixed sleeve, a sealing ring and a pressing sleeve, wherein the fixed 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 a 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 invention, the following brief description is given of the drawings used in the description of the prior art or the embodiments.

FIG. 1 is a front view of a V-process ebullient cooling bed of the present invention with replaceable water tubes.

Fig. 2 is a left side view of fig. 1.

Fig. 3 is A-A view of fig. 1.

Fig. 4 is a top view of fig. 1.

Fig. 5 is a cross-sectional view of fig. 1.

Fig. 6 is a schematic view of a water pipe connected to a steel plate of a chamber body by a detachable connection structure.

Fig. 7 is an enlarged schematic view of the structure of the portion a in fig. 6.

Fig. 8 is an enlarged schematic view of the structure of the portion B in fig. 6.

Fig. 9 is a schematic view of the seal ring of fig. 6.

Fig. 10 is a schematic structural view of the sand blocking structure.

Fig. 11 is a schematic view of the structure of the water pipe support structure for supporting the water pipe.

Fig. 12 is another angular schematic view of the water pipe support structure supporting a water pipe.

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; 300. a cooling chamber; 301. cooling the space; 302. a sand inlet; 303. a sand outlet; 401. a water inlet tank; 402. a water outlet tank; 501. a blast chamber; 502. an air outlet; 503. a blast pipe; 504. a blast pipe; 601. the first sand guide plate is provided with angle steel; 602. the first sand guide plate is provided with angle steel; 603. a sand guide plate; 604. sand blocking lath; 701. a support rod; 702. a groove.

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

This embodiment provides a V-process ebullient cooling bed with replaceable water tubes, as shown in fig. 1-5, comprising: a cooling chamber 300, a water inlet tank 401, a water outlet tank 402, a water pipe 200, a blast chamber 501, and a blast structure. Wherein: the cooling chamber 300 has a cooling space 301 which is fixedly supported by a bracket, is box-shaped as a whole, has a bottom plane inclined, and has a higher end near the sand inlet 302 and a lower end near the sand outlet 303; the water inlet water tank 401 is arranged at the outer side of one end of the cooling chamber 300, and a chamber steel plate 100 is arranged between the water inlet water tank 401 and the cooling chamber 300 at intervals; the water outlet tank 402 is arranged at the outer side of the other end of the cooling chamber 300, and a chamber steel plate 100 is arranged between the water outlet tank 402 and the cooling chamber 300 at intervals; the water pipes 200 are provided with a plurality of water pipes, and two ends of each water pipe are respectively and fixedly arranged at two ends of the cooling chamber 300 in a sealing way through a detachable connecting structure and are respectively communicated with the water inlet water tank 401 and the water outlet water tank 402; the water pipes 200 are uniformly installed under the cooling space 301; the blast chamber 501 is disposed below the cooling chamber 300 and has a plurality of upper openings communicating with the cooling space 301; a blowing structure communicating with the blower chamber 501 for blowing air into the blower chamber 501; an air outlet 502 is arranged above the cooling chamber 300 and is communicated with the cooling space 301; a sand inlet 302 is arranged above one end of the cooling chamber 300 and is communicated with the cooling space 301; a sand outlet 303 is arranged below one end of the cooling chamber 300 and is communicated with the cooling space 301; the cooling chamber 300 is disposed obliquely downward along the direction from the sand inlet 302 to the sand outlet 303.

When the V-method boiling cooling bed with the replaceable water pipe works, hot sand enters the cooling space 301 of the cooling chamber 300 from the sand inlet 302, the bottom surface of the cooling chamber 300 at the sand inlet 302 is higher, and after the hot sand enters, the hot sand flows to the sand outlet 303 with the lower bottom surface; the blast chamber 501 is disposed below the cooling chamber 300, and blows air through the blast structure, thereby blowing not only sand to flow, but also heat and dust in the hot sand upward to the air outlet 502 to be discharged; the water pipe 200 is uniformly arranged below the cooling space 301, hot sand flows downwards from the gap of the water pipe 200, cooling water flows from the water inlet water tank 401 with a lower position, flows into the water outlet water tank 402 with a higher position after flowing through the water pipe 200, and water in the water pipe 200 exchanges heat with the hot sand to take away heat and reduce the temperature of the molding sand.

The two ends of the water pipe 200 are fixedly arranged at the two ends of the cooling chamber 300 in a sealing way through the detachable connecting structure, the detachable connecting structure is sealed reliably, the water pipe 200 can be replaced, and the water pipe 200 can be replaced without eliminating the whole cooling bed after the water pipe 200 is worn out due to long-time use; the cooling bed has 259 water pipes 200, and the cost of eliminating the whole cooling bed due to the damage of one water pipe 200 is very high.

The detachable connection structure for sealing and fixedly mounting both ends of the water pipe 200 at both ends of the cooling chamber 300, which is shown with reference to fig. 6 to 9, includes a fixing sleeve 1, a sealing ring 2 and a pressing sleeve 3.

Wherein, the middle part of the fixed sleeve 1 is provided with a channel 10 in a penetrating way, and the channel 10 is used for the water pipe 200 to pass through; a first channel 11 is arranged on one side of the channel 10, a second channel 12 is arranged on the other side of the channel, 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 internal thread is arranged on the inner wall of the tail section 123 of the second channel 12; the position of the fixing sleeve 1 opposite to the first channel 11 is suitable for sealing and fixing the position of the through hole of the chamber steel plate 100 arranged in the cooling chamber 300; 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, wherein 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, 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 described above 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.

The sealing ring 2 is provided with a metal gasket 4; 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 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. 9, 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.

As shown in fig. 1, 2 and 4, the blowing structure includes a blowing pipe 503, the blowing pipe 503 is fixedly installed outside the cooling chamber 300, one end of the blowing pipe 503 communicates with a blower, and the blowing pipe 503 communicates with the blowing chamber 501 through a plurality of blowing pipes 504.

As shown in fig. 1 and 10, the cooling chamber 300 further comprises a sand guiding structure installed at a position opposite to the sand inlet 302. The sand guiding structure comprises: a first sand guide plate setting angle 601, a second sand guide plate setting angle 602, and a sand guide plate 603; wherein, the first sand guide plate placement angle 601 is arranged at the upper stream position below the sand inlet 302; a second sand guide plate placement angle 602 is disposed downstream of the sand inlet 302; the setting position of the first sand guide plate setting angle 601 is higher than the setting position of the second sand guide plate setting angle 602; the two ends of the sand guide plate 603 are respectively placed on the first sand guide plate placing angle steel 601 and the second sand guide plate placing angle steel 602, sand leakage holes are uniformly formed in the middle of the sand guide plate, and a plurality of sand blocking strips 604 are uniformly arranged above the sand guide plate 603 along the transverse direction of the cooling chamber 300.

When hot sand is flushed into the cooling chamber 300 from the sand inlet 302, the hot sand firstly impacts the sand guide plate 603, and sand leakage holes are uniformly formed in the sand guide plate 603, so that the hot sand can be uniformly leaked down; the upper surface of the sand guide plate 603 is also provided with a plurality of sand baffle plates 604, so that hot sand can be prevented from flowing from the high end to the low end too quickly, and can be guided to the two transverse ends of the cooling chamber, and the hot sand can be prevented from directly impacting the water pipe; the sand guide 603 is placed on the first sand guide placement angle 601 and the second sand guide placement angle 602, and when the sand guide 603 needs to be replaced due to abrasion, the sand guide 603 can be pulled out from the sand inlet 302 after the angle is changed, and the new sand guide 603 is replaced.

As shown in fig. 11-12, the cooling chamber 300 further comprises a water pipe supporting structure, which comprises a supporting rod 701, wherein the supporting rod 701 is fixedly arranged along the transverse direction of the cooling chamber 300; the supporting bar 701 is provided with a plurality of grooves 702 for supporting the water pipe 200.

As shown in fig. 5, the support rods 701 supporting the different levels of water pipes 200 are disposed at positions gradually rising and spaced apart from each other in the upstream-downstream direction.

The working flow of the V-method boiling cooling bed with the replaceable water pipe in the embodiment is as follows:

the hot sand enters the cooling space 301 of the cooling chamber 300 from the sand inlet 302, the bottom surface of the cooling chamber 300 at the sand inlet 302 is higher, and after entering, the hot sand flows to the sand outlet 303 at the lower bottom surface; the blast chamber 501 is disposed below the cooling chamber 300, and blows air through the blast structure, thereby blowing not only sand to flow, but also heat and dust in the hot sand upward to the air outlet 502 to be discharged; the water pipe 200 is uniformly arranged below the cooling space 301, hot sand flows downwards from the gap of the water pipe 200, cooling water flows from the water inlet water tank 401 with a lower position, flows into the water outlet water tank 402 with a higher position after flowing through the water pipe 200, and water in the water pipe 200 exchanges heat with the hot sand to take away heat and reduce the temperature of the molding sand.

When a plurality of water pipes 200 (generally 259) are installed on the chamber steel plate 100, the fixing sleeve 1 is fixedly 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 the pair of fixing sleeves 1 which are correspondingly arranged, the sealing ring 2 is sleeved outside the water pipe 200 and pushed to the inner side of the smooth section 121 in 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.

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.

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 V-process ebullient cooling bed with replaceable water tubes, comprising:

a cooling chamber (300) having a cooling space (301);

a water inlet tank (401) arranged outside one end of the cooling chamber (300);

a water outlet tank (402) provided outside the other end of the cooling chamber (300);

the water pipes (200) are provided with a plurality of water pipes, and two ends of each water pipe are respectively and fixedly arranged at two ends of the cooling chamber (300) in a sealing way through a detachable connecting structure and are respectively communicated with the water inlet water tank (401) and the water outlet water tank (402); the water pipes (200) are uniformly arranged below the cooling space (301);

a blast chamber (501) provided below the cooling chamber (300) and having a plurality of upper openings communicating with the cooling space (301);

a blowing structure communicating with the blower chamber (501) for blowing air into the blower chamber (501);

an air outlet (502) which is arranged above the cooling chamber (300) and is communicated with the cooling space (301);

a sand inlet (302) which is arranged above one end of the cooling chamber (300) and is communicated with the cooling space (301);

a sand outlet (303) which is arranged below one end of the cooling chamber (300) and is communicated with the cooling space (301);

and the cooling chamber (300) is arranged in a downward inclined manner along the direction from the sand inlet (302) to the sand outlet (303).

2. The V-process ebullient cooling bed with replaceable water tubes according to claim 1, wherein said detachable connection structure comprises:

a fixing sleeve (1), wherein a channel (10) is penetrated in the middle part of the fixing sleeve, and the channel (10) is used for the water pipe (200) to pass through; 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 sealing and fixedly installing at the position of a through hole of a chamber body steel plate (100) of the cooling chamber (300);

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, the compression sleeve is provided with a pressing section (31), a connecting section (32) and an operating section (33) which are sequentially connected, and 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).

3. The V-process ebullient cooling bed with replaceable water tubes according to claim 2, 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).

4. The V-process ebullient cooling bed with replaceable water tubes according to claim 2, 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.

5. A V-method ebullient cooling bed with exchangeable water pipes according to claim 2, 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.

6. The V-process ebullient cooling bed with replaceable water tubes according to any one of claims 1-5, wherein: the blowing structure comprises a blowing pipe (503), wherein the blowing pipe (503) is fixedly arranged outside the cooling chamber (300), one end of the blowing pipe (503) is communicated with a blower, and the blowing pipe (503) is communicated with the blowing chamber (501) through a plurality of blowing pipes (504).

7. The V-method ebullient cooling bed with replaceable water pipe according to any one of claims 1-5, further comprising a sand guiding structure installed in the cooling chamber (300) at a position opposite to the sand inlet (302).

8. The V-process ebullient cooling bed with replaceable water tubes according to claim 7, wherein said sand guiding structure comprises:

the first sand guide plate placement angle steel (601) is arranged at the lower upstream position of the sand inlet (302);

a second sand guide plate placement angle steel (602) arranged at a downstream position below the sand inlet (302);

the setting position of the first sand guide plate setting angle steel (601) is higher than the setting position of the second sand guide plate setting angle steel (602);

the sand guide plate (603), both ends are placed respectively on angle steel (601) and second sand guide plate are laid to first sand guide plate, and the middle part evenly is equipped with the hourglass sand hole, follows cooling chamber (300) transverse direction, sand guide plate (603) top evenly is provided with a plurality of fender sand laths (604).

9. The V-process ebullient cooling bed with replaceable water tubes according to any one of claims 1-5, wherein: the cooling device further comprises a water pipe supporting structure, and comprises a supporting rod (701), wherein the supporting rod (701) is fixedly arranged along the transverse direction of the cooling chamber (300); the support rod (701) is provided with a plurality of grooves (702) for supporting the water pipe (200).

10. The V-process ebullient cooling bed with replaceable water tubes according to claim 9, wherein: the support rods (701) supporting the water pipes (200) of different levels are arranged at positions gradually rising and spaced apart from each other in the upstream-downstream direction.

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